From patchwork Fri Jan 13 17:26:36 2023 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 8bit X-Patchwork-Submitter: =?utf-8?q?Martin_T=C5=AFma?= X-Patchwork-Id: 43386 Return-Path: Delivered-To: ouuuleilei@gmail.com Received: by 2002:a5d:4e01:0:0:0:0:0 with SMTP id p1csp334319wrt; Fri, 13 Jan 2023 07:34:53 -0800 (PST) X-Google-Smtp-Source: AMrXdXugl31tiCb0iF6D81ybItzep0Nkwm9SosbmrKzYmCYSbeaR/kFqDG0Hb/pkVUPNgmPJ0wXx X-Received: by 2002:a05:6402:291a:b0:48b:c8de:9d1a with SMTP id ee26-20020a056402291a00b0048bc8de9d1amr37648558edb.37.1673624092756; Fri, 13 Jan 2023 07:34:52 -0800 (PST) ARC-Seal: i=1; a=rsa-sha256; t=1673624092; cv=none; d=google.com; s=arc-20160816; b=WGVhNlN2u/UBax3Bkb8YfEnvV3g21tyLlkwd0xzzDxGsx9JZNLaBcB4CPiEYVoLRCs NV4LCk/i7MGFw6GTuBshBS9nAaLyd8VF4aSxmu8qh4Zpi29yw3xaufOBFW3i8kHZiRgZ SN3MfPqxyNpYYrQahh1CjLnlj0DB416kqIXH8f2bDJlf/HLXwEacN9+It6182MdaXK1K DiKrXqNJMFVilUv4dBb7d/XPe32LesJyXBzyAwEj4fUxvoKKuBozR9GuAzrUMt2EXj6K tQ+Z8PT1NrvP6LTqvalvyNecNMzFV+4YU1lZZE3vD8QWLlv6yhPhKvc5EplmpyW57TKE OIUQ== ARC-Message-Signature: i=1; a=rsa-sha256; c=relaxed/relaxed; d=google.com; s=arc-20160816; h=list-id:precedence:content-transfer-encoding:mime-version :references:in-reply-to:message-id:date:subject:cc:to:from; bh=xdbSSYCK16i78buVx20usyHXc6JuzpeTBp6KbJlJ0vU=; b=nQjZFuEm5DEhBz98qtcfw/ffpp4Y+GPDBfV+TOxXLrJuIqPG2e6B8MehCmFBTb7VNQ SpGEOWWa6HN/t6JdeOc72k8K4NNLrfWyIra3Y7NNtRUcmA+reak2ygFeaN2z84BCpfSu l5ZZ1tfFG3r4ep5P0tuqqKksXF6XcW7WjgX3dTPMxooRfy2O9TnndTFGhWBqTo8lAfq/ SAqOdOtmJst8wZ6csjEoW15n0X3cIP9YmVKDC7dpoCWtyCLP6tb5/edtSK/aojQqCuJU INo0n6wR2MpVCxBKWpJkrYz+DoY6BFwMv5V2xt7ab+rgxia7WkivvHoB0pTImc24X7hS GVtA== ARC-Authentication-Results: i=1; mx.google.com; spf=pass (google.com: domain of linux-kernel-owner@vger.kernel.org designates 2620:137:e000::1:20 as permitted sender) smtp.mailfrom=linux-kernel-owner@vger.kernel.org Received: from out1.vger.email (out1.vger.email. [2620:137:e000::1:20]) by mx.google.com with ESMTP id cm12-20020a0564020c8c00b004823533c5bdsi19346233edb.211.2023.01.13.07.34.27; Fri, 13 Jan 2023 07:34:52 -0800 (PST) Received-SPF: pass (google.com: domain of linux-kernel-owner@vger.kernel.org designates 2620:137:e000::1:20 as permitted sender) client-ip=2620:137:e000::1:20; Authentication-Results: mx.google.com; spf=pass (google.com: domain of linux-kernel-owner@vger.kernel.org designates 2620:137:e000::1:20 as permitted sender) smtp.mailfrom=linux-kernel-owner@vger.kernel.org Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S229941AbjAMPca (ORCPT + 99 others); Fri, 13 Jan 2023 10:32:30 -0500 Received: from lindbergh.monkeyblade.net ([23.128.96.19]:53738 "EHLO lindbergh.monkeyblade.net" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S229827AbjAMPbw (ORCPT ); Fri, 13 Jan 2023 10:31:52 -0500 Received: from mx.gpxsee.org (mx.gpxsee.org [37.205.14.76]) by lindbergh.monkeyblade.net (Postfix) with ESMTP id 02E9C12A85; Fri, 13 Jan 2023 07:25:21 -0800 (PST) Received: from mgb4.digiteq.red (unknown [62.77.71.229]) by mx.gpxsee.org (Postfix) with ESMTPSA id 18A83E069; Fri, 13 Jan 2023 16:25:21 +0100 (CET) From: tumic@gpxsee.org To: Mauro Carvalho Chehab Cc: linux-media@vger.kernel.org, linux-kernel@vger.kernel.org, Lizhi Hou , =?utf-8?q?Martin_T=C5=AFma?= Subject: [PATCH v5 1/1] Added Digiteq Automotive MGB4 driver Date: Fri, 13 Jan 2023 18:26:36 +0100 Message-Id: <20230113172636.2590-2-tumic@gpxsee.org> X-Mailer: git-send-email 2.39.0 In-Reply-To: <20230113172636.2590-1-tumic@gpxsee.org> References: <20230113172636.2590-1-tumic@gpxsee.org> MIME-Version: 1.0 X-Spam-Status: No, score=-1.9 required=5.0 tests=BAYES_00,SPF_HELO_NONE, SPF_NONE autolearn=ham autolearn_force=no version=3.4.6 X-Spam-Checker-Version: SpamAssassin 3.4.6 (2021-04-09) on lindbergh.monkeyblade.net Precedence: bulk List-ID: X-Mailing-List: linux-kernel@vger.kernel.org X-getmail-retrieved-from-mailbox: =?utf-8?q?INBOX?= X-GMAIL-THRID: =?utf-8?q?1754922056650877248?= X-GMAIL-MSGID: =?utf-8?q?1754922056650877248?= From: Martin Tůma Digiteq Automotive MGB4 is a modular frame grabber PCIe card for automotive video interfaces. As for now, two modules - FPD-Link and GMSL - are available and supported by the driver. The card has two inputs and two outputs (FPD-Link only). In addition to the video interfaces it also provides a trigger signal interface and a MTD interface for FPGA firmware upload. Signed-off-by: Martin Tůma --- Documentation/admin-guide/media/mgb4.rst | 352 ++++++++ .../admin-guide/media/pci-cardlist.rst | 1 + .../admin-guide/media/v4l-drivers.rst | 1 + MAINTAINERS | 7 + drivers/media/pci/Kconfig | 1 + drivers/media/pci/Makefile | 1 + drivers/media/pci/mgb4/Kconfig | 17 + drivers/media/pci/mgb4/Makefile | 6 + drivers/media/pci/mgb4/mgb4_cmt.c | 247 ++++++ drivers/media/pci/mgb4/mgb4_cmt.h | 16 + drivers/media/pci/mgb4/mgb4_core.c | 641 ++++++++++++++ drivers/media/pci/mgb4/mgb4_core.h | 65 ++ drivers/media/pci/mgb4/mgb4_dma.c | 123 +++ drivers/media/pci/mgb4/mgb4_dma.h | 18 + drivers/media/pci/mgb4/mgb4_i2c.c | 140 +++ drivers/media/pci/mgb4/mgb4_i2c.h | 35 + drivers/media/pci/mgb4/mgb4_io.h | 39 + drivers/media/pci/mgb4/mgb4_regs.c | 30 + drivers/media/pci/mgb4/mgb4_regs.h | 35 + drivers/media/pci/mgb4/mgb4_sysfs.h | 18 + drivers/media/pci/mgb4/mgb4_sysfs_in.c | 780 ++++++++++++++++ drivers/media/pci/mgb4/mgb4_sysfs_out.c | 732 +++++++++++++++ drivers/media/pci/mgb4/mgb4_sysfs_pci.c | 86 ++ drivers/media/pci/mgb4/mgb4_trigger.c | 208 +++++ drivers/media/pci/mgb4/mgb4_trigger.h | 8 + drivers/media/pci/mgb4/mgb4_vin.c | 830 ++++++++++++++++++ drivers/media/pci/mgb4/mgb4_vin.h | 63 ++ drivers/media/pci/mgb4/mgb4_vout.c | 501 +++++++++++ drivers/media/pci/mgb4/mgb4_vout.h | 58 ++ 29 files changed, 5059 insertions(+) create mode 100644 Documentation/admin-guide/media/mgb4.rst create mode 100644 drivers/media/pci/mgb4/Kconfig create mode 100644 drivers/media/pci/mgb4/Makefile create mode 100644 drivers/media/pci/mgb4/mgb4_cmt.c create mode 100644 drivers/media/pci/mgb4/mgb4_cmt.h create mode 100644 drivers/media/pci/mgb4/mgb4_core.c create mode 100644 drivers/media/pci/mgb4/mgb4_core.h create mode 100644 drivers/media/pci/mgb4/mgb4_dma.c create mode 100644 drivers/media/pci/mgb4/mgb4_dma.h create mode 100644 drivers/media/pci/mgb4/mgb4_i2c.c create mode 100644 drivers/media/pci/mgb4/mgb4_i2c.h create mode 100644 drivers/media/pci/mgb4/mgb4_io.h create mode 100644 drivers/media/pci/mgb4/mgb4_regs.c create mode 100644 drivers/media/pci/mgb4/mgb4_regs.h create mode 100644 drivers/media/pci/mgb4/mgb4_sysfs.h create mode 100644 drivers/media/pci/mgb4/mgb4_sysfs_in.c create mode 100644 drivers/media/pci/mgb4/mgb4_sysfs_out.c create mode 100644 drivers/media/pci/mgb4/mgb4_sysfs_pci.c create mode 100644 drivers/media/pci/mgb4/mgb4_trigger.c create mode 100644 drivers/media/pci/mgb4/mgb4_trigger.h create mode 100644 drivers/media/pci/mgb4/mgb4_vin.c create mode 100644 drivers/media/pci/mgb4/mgb4_vin.h create mode 100644 drivers/media/pci/mgb4/mgb4_vout.c create mode 100644 drivers/media/pci/mgb4/mgb4_vout.h diff --git a/Documentation/admin-guide/media/mgb4.rst b/Documentation/admin-guide/media/mgb4.rst new file mode 100644 index 000000000000..77db2fa64ab4 --- /dev/null +++ b/Documentation/admin-guide/media/mgb4.rst @@ -0,0 +1,352 @@ +.. SPDX-License-Identifier: GPL-2.0 + +==================== +mgb4 sysfs interface +==================== + +The mgb4 driver provides a sysfs interface, that is used to configure video +stream related parameters (some of them must be set properly before the v4l2 +device can be opened) and obtain the video device/stream status. + +There are two types of parameters - global / PCI card related, found under +``/sys/class/video4linux/videoX/device`` and module specific found under +``/sys/class/video4linux/videoX``. + + +Global (PCI card) parameters +============================ + +**module_type** (R): + Module type. + + | 0 - No module present + | 1 - FPDL3 + | 2 - GMSL + +**module_version** (R): + Module version number. Zero in case of a missing module. + +**fw_type** (R): + Firmware type. + + | 1 - FPDL3 + | 2 - GMSL + +**fw_version** (R): + Firmware version number. + +**serial_number** (R): + Card serial number. The format is:: + + PRODUCT-REVISION-SERIES-SERIAL + + where each component is a 8b number. + +**temperature** (R): + FPGA core temperature in Celsius degree. + +Common FPDL3/GMSL input parameters +================================== + +**input_id** (R): + Input number ID, zero based. + +**oldi_lane_width** (RW): + Number of deserializer output lanes. + + | 0 - single + | 1 - dual + +**color_mapping** (RW): + Mapping of the incoming bits in the signal to the colour bits of the pixels. + + | 0 - OLDI/JEIDA + | 1 - SPWG/VESA + +**link_status** (R): + Video link status. If the link is locked, chips are properly connected and + communicating at the same speed and protocol. The link can be locked without + an active video stream. + + | 0 - unlocked + | 1 - locked + +**stream_status** (R): + Video stream status. A stream is detected if the link is locked, the input + pixel clock is running and the DE signal is moving. + + | 0 - not detected + | 1 - detected + +**video_width** (R): + Video stream width. This is the actual width as detected by the HW. You may + see a different width in the v4l2 APIs as those values can not be arbitrary + changed by the driver. + +**video_height** (R): + Video stream height. This is the actual height as detected by the HW. You + may see a different height in the v4l2 APIs as those values can not be + arbitrary changed by the driver. + +**vsync_status** (R): + The type of VSYNC pulses as detected by the video format detector. + + | 0 - active low + | 1 - active high + | 2 - not available + +**hsync_status** (R): + The type of HSYNC pulses as detected by the video format detector. + + | 0 - active low + | 1 - active high + | 2 - not available + +**vsync_gap_length** (RW): + If the incoming video signal does not contain synchronization VSYNC and + HSYNC pulses, these must be generated internally in the FPGA to achieve + the correct frame ordering. This value indicates, how many "empty" pixels + (pixels with deasserted Data Enable signal) are necessary to generate the + internal VSYNC pulse. + +**hsync_gap_length** (RW): + If the incoming video signal does not contain synchronization VSYNC and + HSYNC pulses, these must be generated internally in the FPGA to achieve + the correct frame ordering. This value indicates, how many "empty" pixels + (pixels with deasserted Data Enable signal) are necessary to generate the + internal HSYNC pulse. The value must be greater than 1 and smaller than + vsync_gap_length. + +**pclk_frequency** (R): + Input pixel clock frequency in kHz. + + *Note: The frequency_range parameter must be set properly first to get + a valid frequency here.* + +**hsync_width** (R): + Width of the HSYNC signal in PCLK clock ticks. + +**vsync_width** (R): + Width of the VSYNC signal in PCLK clock ticks. + +**hback_porch** (R): + Number of PCLK pulses between deassertion of the HSYNC signal and the first + valid pixel in the video line (marked by DE=1). + +**hfront_porch** (R): + Number of PCLK pulses between the end of the last valid pixel in the video + line (marked by DE=1) and assertion of the HSYNC signal. + +**vback_porch** (R): + Number of video lines between deassertion of the VSYNC signal and the video + line with the first valid pixel (marked by DE=1). + +**vfront_porch** (R): + Number of video lines between the end of the last valid pixel line (marked + by DE=1) and assertion of the VSYNC signal. + +**frequency_range** (RW) + PLL frequency range of the OLDI input clock generator. The PLL frequency is + derived from the Pixel Clock Frequency (PCLK) and is equal to PCLK if + oldi_lane_width is set to "single" and PCLK/2 if oldi_lane_width is set to + "dual". + + | 0 - PLL < 50MHz + | 1 - PLL >= 50MHz + + *Note: This parameter can not be changed while the input v4l2 device is + open.* + +**alignment** (RW) + Pixel line alignment. Sets the pixel line alignment in bytes of the frame + buffers provided via the v4l2 interface. The number must be a power of 2. + + *Note: This parameter can not be changed while the input v4l2 device is + open.* + +Common FPDL3/GMSL output parameters +=================================== + +**output_id** (R): + Output number ID, zero based. + +**video_source** (RW): + Output video source. If set to 0 or 1, the source is the corresponding card + input and the v4l2 output devices are disabled. If set to 2 or 3, the source + is the corresponding v4l2 video output device. + + | 0 - input 0 + | 1 - input 1 + | 2 - v4l2 output 0 + | 3 - v4l2 output 1 + + *Note: This parameter can not be changed while ANY of the input/output v4l2 + devices is open.* + +**display_width** (RW): + Display width. There is no autodetection of the connected display, so the + propper value must be set before the start of streaming. + + *Note: This parameter can not be changed while the output v4l2 device is + open.* + +**display_height** (RW): + Display height. There is no autodetection of the connected display, so the + propper value must be set before the start of streaming. + + *Note: This parameter can not be changed while the output v4l2 device is + open.* + +**frame_rate** (RW): + Output video frame rate in frames per second. + +**hsync_polarity** (RW): + HSYNC signal polarity. + + | 0 - active low + | 1 - active high + +**vsync_polarity** (RW): + VSYNC signal polarity. + + | 0 - active low + | 1 - active high + +**de_polarity** (RW): + DE signal polarity. + + | 0 - active low + | 1 - active high + +**pclk_frequency** (RW): + Output pixel clock frequency. Allowed values are between 25000-190000(kHz) + and there is a non-linear stepping between two consecutive allowed + frequencies. The driver finds the nearest allowed frequency to the given + value and sets it. When reading this property, you get the exact + frequency set by the driver. + + *Note: This parameter can not be changed while the output v4l2 device is + open.* + +**hsync_width** (RW): + Width of the HSYNC signal in PCLK clock ticks. + +**vsync_width** (RW): + Width of the VSYNC signal in PCLK clock ticks. + +**hback_porch** (RW): + Number of PCLK pulses between deassertion of the HSYNC signal and the first + valid pixel in the video line (marked by DE=1). + +**hfront_porch** (RW): + Number of PCLK pulses between the end of the last valid pixel in the video + line (marked by DE=1) and assertion of the HSYNC signal. + +**vback_porch** (RW): + Number of video lines between deassertion of the VSYNC signal and the video + line with the first valid pixel (marked by DE=1). + +**vfront_porch** (RW): + Number of video lines between the end of the last valid pixel line (marked + by DE=1) and assertion of the VSYNC signal. + +**alignment** (RW) + Pixel line alignment. Sets the pixel line alignment in bytes of the frame + buffers provided via the v4l2 interface. The number must be a power of 2. + + *Note: This parameter can not be changed while the output v4l2 device is + open.* + + *Note: This parameter can not be changed when loopback mode is active + (video_source is 0 or 1). When loopback mode is enabled, the alignment is + automatically set to the alignment of the input device.* + +FPDL3 specific input parameters +=============================== + +**fpdl3_input_width** (RW): + Number of deserializer input lines. + + | 0 - auto + | 1 - single + | 2 - dual + +FPDL3 specific output parameters +================================ + +**fpdl3_output_width** (RW): + Number of serializer output lines. + + | 0 - auto + | 1 - single + | 2 - dual + +GMSL specific input parameters +============================== + +**gmsl_mode** (RW): + GMSL speed mode. + + | 0 - 12Gb/s + | 1 - 6Gb/s + | 2 - 3Gb/s + | 3 - 1.5Gb/s + +**gmsl_stream_id** (RW): + The GMSL multi-stream contains up to four video streams. This parameter + selects which stream is captured by the video input. The value is the + zero-based index of the stream. + + *Note: This parameter can not be changed while the input v4l2 device is + open.* + +**gmsl_fec** (RW): + GMSL Forward Error Correction (FEC). + + | 0 - disabled + | 1 - enabled + + +==================== +mgb4 mtd partitions +==================== + +The mgb4 driver creates a MTD device with two partitions: + - mgb4-fw.X - FPGA firmware. + - mgb4-data.X - Factory settings, e.g. card serial number. + +The *mgb4-fw* partition is writable and is used for FW updates, *mgb4-data* is +read-only. The *X* attached to the partition name represents the card number. +Depending on the CONFIG_MTD_PARTITIONED_MASTER kernel configuration, you may +also have a third partition named *mgb4-flash* available in the system. This +partition represents the whole, unpartitioned, card's FLASH memory and one should +not fiddle with it... + +==================== +mgb4 iio (triggers) +==================== + +The mgb4 driver creates an Industrial I/O (IIO) device that provides trigger and +signal level status capability. The following scan elements are available: + +**activity**: + The trigger levels and pending status. + + | bit 1 - trigger 1 pending + | bit 2 - trigger 2 pending + | bit 5 - trigger 1 level + | bit 6 - trigger 2 level + +**timestamp**: + The trigger event timestamp. + +The iio device can operate either in "raw" mode where you can fetch the signal +levels (activity bits 5 and 6) using sysfs access or in triggered buffer mode. +In the triggered buffer mode you can follow the signal level changes (activity +bits 1 and 2) using the iio device in /dev. If you enable the timestamps, you +will also get the exact trigger event time that can be matched to a video frame +(every mgb4 video frame has a timestamp with the same clock source). + +*Note: although the activity sample always contains all the status bits, it makes +no sense to get the pending bits in raw mode or the level bits in the triggered +buffer mode - the values do not represent valid data in such case.* diff --git a/Documentation/admin-guide/media/pci-cardlist.rst b/Documentation/admin-guide/media/pci-cardlist.rst index f4d670e632f8..220f12c0bc37 100644 --- a/Documentation/admin-guide/media/pci-cardlist.rst +++ b/Documentation/admin-guide/media/pci-cardlist.rst @@ -78,6 +78,7 @@ ivtv Conexant cx23416/cx23415 MPEG encoder/decoder ivtvfb Conexant cx23415 framebuffer mantis MANTIS based cards meye Sony Vaio Picturebook Motion Eye +mgb4 Digiteq Automotive MGB4 frame grabber mxb Siemens-Nixdorf 'Multimedia eXtension Board' netup-unidvb NetUP Universal DVB card ngene Micronas nGene diff --git a/Documentation/admin-guide/media/v4l-drivers.rst b/Documentation/admin-guide/media/v4l-drivers.rst index 90a026ee05c6..b56a0cde5275 100644 --- a/Documentation/admin-guide/media/v4l-drivers.rst +++ b/Documentation/admin-guide/media/v4l-drivers.rst @@ -20,6 +20,7 @@ Video4Linux (V4L) driver-specific documentation ipu3 ivtv meye + mgb4 omap3isp omap4_camera philips diff --git a/MAINTAINERS b/MAINTAINERS index a36df9ed283d..f6ea4b380a1a 100644 --- a/MAINTAINERS +++ b/MAINTAINERS @@ -6166,6 +6166,13 @@ L: linux-gpio@vger.kernel.org S: Maintained F: drivers/gpio/gpio-gpio-mm.c +DIGITEQ AUTOMOTIVE MGB4 V4L2 DRIVER +M: Martin Tuma +L: linux-media@vger.kernel.org +S: Maintained +F: Documentation/admin-guide/media/mgb4.rst +F: drivers/media/pci/mgb4/ + DIOLAN U2C-12 I2C DRIVER M: Guenter Roeck L: linux-i2c@vger.kernel.org diff --git a/drivers/media/pci/Kconfig b/drivers/media/pci/Kconfig index dff0b450f387..072543b32337 100644 --- a/drivers/media/pci/Kconfig +++ b/drivers/media/pci/Kconfig @@ -13,6 +13,7 @@ if MEDIA_PCI_SUPPORT if MEDIA_CAMERA_SUPPORT comment "Media capture support" +source "drivers/media/pci/mgb4/Kconfig" source "drivers/media/pci/solo6x10/Kconfig" source "drivers/media/pci/sta2x11/Kconfig" source "drivers/media/pci/tw5864/Kconfig" diff --git a/drivers/media/pci/Makefile b/drivers/media/pci/Makefile index 8f887a8a7f17..e2942a2ab2fc 100644 --- a/drivers/media/pci/Makefile +++ b/drivers/media/pci/Makefile @@ -30,6 +30,7 @@ obj-$(CONFIG_VIDEO_CX25821) += cx25821/ obj-$(CONFIG_VIDEO_CX88) += cx88/ obj-$(CONFIG_VIDEO_DT3155) += dt3155/ obj-$(CONFIG_VIDEO_IVTV) += ivtv/ +obj-$(CONFIG_VIDEO_MGB4) += mgb4/ obj-$(CONFIG_VIDEO_SAA7134) += saa7134/ obj-$(CONFIG_VIDEO_SAA7164) += saa7164/ obj-$(CONFIG_VIDEO_SOLO6X10) += solo6x10/ diff --git a/drivers/media/pci/mgb4/Kconfig b/drivers/media/pci/mgb4/Kconfig new file mode 100644 index 000000000000..13fad15a434c --- /dev/null +++ b/drivers/media/pci/mgb4/Kconfig @@ -0,0 +1,17 @@ +# SPDX-License-Identifier: GPL-2.0-only +config VIDEO_MGB4 + tristate "Digiteq Automotive MGB4 support" + depends on VIDEO_DEV && PCI && I2C && DMADEVICES && SPI && MTD && IIO + select VIDEOBUF2_DMA_SG + select IIO_BUFFER + select IIO_TRIGGERED_BUFFER + select I2C_XILINX + select SPI_XILINX + select MTD_SPI_NOR + select XILINX_XDMA + help + This is a video4linux driver for Digiteq Automotive MGB4 grabber + cards. + + To compile this driver as a module, choose M here: the + module will be called mgb4. diff --git a/drivers/media/pci/mgb4/Makefile b/drivers/media/pci/mgb4/Makefile new file mode 100644 index 000000000000..e92ead18bed0 --- /dev/null +++ b/drivers/media/pci/mgb4/Makefile @@ -0,0 +1,6 @@ +# SPDX-License-Identifier: GPL-2.0 +mgb4-objs := mgb4_regs.o mgb4_core.o mgb4_vin.o mgb4_vout.o \ + mgb4_sysfs_pci.o mgb4_sysfs_in.o mgb4_sysfs_out.o \ + mgb4_i2c.o mgb4_cmt.o mgb4_trigger.o mgb4_dma.o + +obj-$(CONFIG_VIDEO_MGB4) += mgb4.o diff --git a/drivers/media/pci/mgb4/mgb4_cmt.c b/drivers/media/pci/mgb4/mgb4_cmt.c new file mode 100644 index 000000000000..80776771ee9b --- /dev/null +++ b/drivers/media/pci/mgb4/mgb4_cmt.c @@ -0,0 +1,247 @@ +// SPDX-License-Identifier: GPL-2.0-only +/* + * Copyright (C) 2021-2022 Digiteq Automotive + * author: Martin Tuma + * + * The CMT module configures the FPGA Clock Management Tile (CMT) registers. For + * different video signal frequencies (FPGA input signal frequencies), the FPGA + * CMT registers need to be adjusted for the FPGA to work properly. The values + * are precomputed based on formulas given by Xilinx in their FPGA documentation + * (which are in turn full of some magic values/tables...). + */ + +#include +#include +#include "mgb4_core.h" +#include "mgb4_cmt.h" + +static const u16 cmt_vals_out[][15] = { + {0x1208, 0x0000, 0x171C, 0x0000, 0x1E38, 0x0000, 0x11C7, 0x0000, 0x1041, 0x01BC, 0x7C01, 0x7DE9, 0xFFFF, 0x9900, 0x8100, }, + {0x11C7, 0x0000, 0x1619, 0x0080, 0x1C71, 0x0000, 0x130D, 0x0080, 0x0041, 0x0090, 0x7C01, 0x7DE9, 0xFFFF, 0x1100, 0x9000, }, + {0x11C7, 0x0000, 0x1619, 0x0080, 0x1C71, 0x0000, 0x165A, 0x0080, 0x0082, 0x00FA, 0x7C01, 0x7DE9, 0xFFFF, 0x1000, 0x9000, }, + {0x11C7, 0x0000, 0x1619, 0x0080, 0x1C71, 0x0000, 0x1187, 0x0080, 0x1041, 0x01EE, 0x7C01, 0x7DE9, 0xFFFF, 0x9900, 0x8100, }, + {0x1186, 0x0000, 0x1555, 0x0000, 0x1AAA, 0x0000, 0x1451, 0x0000, 0x0042, 0x0013, 0x7C01, 0x7DE9, 0xFFFF, 0x0900, 0x1000, }, + {0x11C7, 0x0000, 0x1619, 0x0080, 0x1C71, 0x0000, 0x134E, 0x0080, 0x0041, 0x005E, 0x7C01, 0x7DE9, 0xFFFF, 0x0900, 0x1000, }, + {0x1145, 0x0000, 0x1452, 0x0080, 0x18E3, 0x0000, 0x1619, 0x0080, 0x0083, 0x00FA, 0x7C01, 0x7DE9, 0xFFFF, 0x1000, 0x9000, }, + {0x1145, 0x0000, 0x1452, 0x0080, 0x18E3, 0x0000, 0x179E, 0x0000, 0x00C3, 0x00FA, 0x7C01, 0x7DE9, 0xFFFF, 0x0800, 0x1000, }, + {0x1145, 0x0000, 0x1452, 0x0080, 0x18E3, 0x0000, 0x179F, 0x0080, 0x00C3, 0x00FA, 0x7C01, 0x7DE9, 0xFFFF, 0x0800, 0x1000, }, + {0x1145, 0x0000, 0x1452, 0x0080, 0x18E3, 0x0000, 0x17DF, 0x0000, 0x00C3, 0x00FA, 0x7C01, 0x7DE9, 0xFFFF, 0x1000, 0x8800, }, + {0x1145, 0x0000, 0x1452, 0x0080, 0x18E3, 0x0000, 0x128B, 0x0080, 0x0041, 0x00DB, 0x7C01, 0x7DE9, 0xFFFF, 0x9000, 0x0100, }, + {0x1186, 0x0000, 0x1555, 0x0000, 0x1AAA, 0x0000, 0x1820, 0x0000, 0x0083, 0x00FA, 0x7DE9, 0x7DE8, 0xFFFF, 0x0900, 0x9000, }, + {0x1186, 0x0000, 0x1555, 0x0000, 0x1AAA, 0x0000, 0x1187, 0x0080, 0x1041, 0x01EE, 0x7C01, 0x7DE9, 0xFFFF, 0x9900, 0x8100, }, + {0x1104, 0x0000, 0x138E, 0x0000, 0x171C, 0x0000, 0x169B, 0x0080, 0x00C3, 0x00FA, 0x7C01, 0x7DE9, 0xFFFF, 0x1800, 0x0100, }, + {0x1145, 0x0000, 0x1452, 0x0080, 0x18E3, 0x0000, 0x171C, 0x0000, 0x0083, 0x00FA, 0x7C01, 0x7DE9, 0xFFFF, 0x1100, 0x1800, }, + {0x1186, 0x0000, 0x1555, 0x0000, 0x1AAA, 0x0000, 0x1515, 0x0080, 0x0042, 0x00FA, 0x7C01, 0x7DE9, 0xFFFF, 0x0900, 0x1000, }, + {0x1104, 0x0000, 0x138E, 0x0000, 0x171C, 0x0000, 0x1493, 0x0080, 0x0082, 0x00FA, 0x7C01, 0x7DE9, 0xFFFF, 0x0900, 0x1000, }, + {0x1145, 0x0000, 0x1452, 0x0080, 0x18E3, 0x0000, 0x15D8, 0x0080, 0x0082, 0x00FA, 0x7C01, 0x7DE9, 0xFFFF, 0x1900, 0x0100, }, + {0x1104, 0x0000, 0x138E, 0x0000, 0x171C, 0x0000, 0x124A, 0x0080, 0x0041, 0x010D, 0x7C01, 0x7DE9, 0xFFFF, 0x9000, 0x0100, }, + {0x1104, 0x0000, 0x138E, 0x0000, 0x171C, 0x0000, 0x175D, 0x0000, 0x00C3, 0x00FA, 0x7C01, 0x7DE9, 0xFFFF, 0x0800, 0x1000, }, + {0x1145, 0x0000, 0x1452, 0x0080, 0x18E3, 0x0000, 0x1619, 0x0080, 0x0082, 0x00FA, 0x7C01, 0x7DE9, 0xFFFF, 0x1000, 0x9000, }, + {0x1145, 0x0000, 0x1452, 0x0080, 0x18E3, 0x0000, 0x17DF, 0x0000, 0x0083, 0x00FA, 0x7C01, 0x7DE9, 0xFFFF, 0x1000, 0x8800, }, + {0x1145, 0x0000, 0x1452, 0x0080, 0x18E3, 0x0000, 0x17E0, 0x0080, 0x0083, 0x00FA, 0x7C01, 0x7DE9, 0xFFFF, 0x0900, 0x9000, }, + {0x1145, 0x0000, 0x1452, 0x0080, 0x18E3, 0x0000, 0x1820, 0x0000, 0x0083, 0x00FA, 0x7DE9, 0x7DE8, 0xFFFF, 0x0900, 0x9000, }, + {0x1104, 0x0000, 0x138E, 0x0000, 0x171C, 0x0000, 0x13D0, 0x0080, 0x0042, 0x002C, 0x7C01, 0x7DE9, 0xFFFF, 0x0900, 0x1000, }, + {0x1104, 0x0000, 0x138E, 0x0000, 0x171C, 0x0000, 0x128B, 0x0080, 0x0041, 0x00DB, 0x7C01, 0x7DE9, 0xFFFF, 0x9000, 0x0100, }, + {0x1104, 0x0000, 0x138E, 0x0000, 0x171C, 0x0000, 0x1820, 0x0000, 0x00C3, 0x00FA, 0x7DE9, 0x7DE8, 0xFFFF, 0x0900, 0x9000, }, + {0x1145, 0x0000, 0x1452, 0x0080, 0x18E3, 0x0000, 0x134E, 0x0080, 0x0041, 0x005E, 0x7C01, 0x7DE9, 0xFFFF, 0x0900, 0x1000, }, + {0x1145, 0x0000, 0x1452, 0x0080, 0x18E3, 0x0000, 0x1515, 0x0080, 0x0042, 0x00FA, 0x7C01, 0x7DE9, 0xFFFF, 0x0900, 0x1000, }, + {0x10C3, 0x0000, 0x128B, 0x0080, 0x1555, 0x0000, 0x175D, 0x0000, 0x00C4, 0x00FA, 0x7C01, 0x7DE9, 0xFFFF, 0x0800, 0x1000, }, + {0x1145, 0x0000, 0x1452, 0x0080, 0x18E3, 0x0000, 0x11C7, 0x0000, 0x1041, 0x01BC, 0x7C01, 0x7DE9, 0xFFFF, 0x9900, 0x8100, }, + {0x10C3, 0x0000, 0x128B, 0x0080, 0x1555, 0x0000, 0x1209, 0x0080, 0x0041, 0x013F, 0x7C01, 0x7DE9, 0xFFFF, 0x9900, 0x1100, }, + {0x10C3, 0x0000, 0x128B, 0x0080, 0x1555, 0x0000, 0x1556, 0x0080, 0x0083, 0x00FA, 0x7C01, 0x7DE9, 0xFFFF, 0x0800, 0x8000, }, + {0x10C3, 0x0000, 0x128B, 0x0080, 0x1555, 0x0000, 0x179F, 0x0080, 0x00C4, 0x00FA, 0x7C01, 0x7DE9, 0xFFFF, 0x0800, 0x1000, }, + {0x1104, 0x0000, 0x138E, 0x0000, 0x171C, 0x0000, 0x15D8, 0x0080, 0x0082, 0x00FA, 0x7C01, 0x7DE9, 0xFFFF, 0x1900, 0x0100, }, + {0x10C3, 0x0000, 0x128B, 0x0080, 0x1555, 0x0000, 0x1105, 0x0080, 0x1041, 0x01E8, 0x6401, 0x65E9, 0xFFFF, 0x9800, 0x1100, }, + {0x10C3, 0x0000, 0x128B, 0x0080, 0x1555, 0x0000, 0x1820, 0x0000, 0x00C4, 0x00FA, 0x7DE9, 0x7DE8, 0xFFFF, 0x0900, 0x9000, }, + {0x1104, 0x0000, 0x138E, 0x0000, 0x171C, 0x0000, 0x1493, 0x0080, 0x0042, 0x00FA, 0x7C01, 0x7DE9, 0xFFFF, 0x0900, 0x1000, }, + {0x10C3, 0x0000, 0x128B, 0x0080, 0x1555, 0x0000, 0x138E, 0x0000, 0x0042, 0x005E, 0x7C01, 0x7DE9, 0xFFFF, 0x0900, 0x1000, }, + {0x1104, 0x0000, 0x138E, 0x0000, 0x171C, 0x0000, 0x17E0, 0x0080, 0x0083, 0x00FA, 0x7C01, 0x7DE9, 0xFFFF, 0x0900, 0x9000, }, + {0x1104, 0x0000, 0x138E, 0x0000, 0x171C, 0x0000, 0x165A, 0x0080, 0x0082, 0x00FA, 0x7C01, 0x7DE9, 0xFFFF, 0x1000, 0x9000, }, + {0x10C3, 0x0000, 0x128B, 0x0080, 0x1555, 0x0000, 0x175D, 0x0000, 0x00C3, 0x00FA, 0x7C01, 0x7DE9, 0xFFFF, 0x0800, 0x1000, }, + {0x1104, 0x0000, 0x138E, 0x0000, 0x171C, 0x0000, 0x1187, 0x0080, 0x1041, 0x01EE, 0x7C01, 0x7DE9, 0xFFFF, 0x9900, 0x8100, }, + {0x10C3, 0x0000, 0x128B, 0x0080, 0x1555, 0x0000, 0x175E, 0x0080, 0x00C3, 0x00FA, 0x7C01, 0x7DE9, 0xFFFF, 0x0800, 0x1000, }, + {0x10C3, 0x0000, 0x128B, 0x0080, 0x1555, 0x0000, 0x179E, 0x0000, 0x00C3, 0x00FA, 0x7C01, 0x7DE9, 0xFFFF, 0x0800, 0x1000, }, + {0x1104, 0x0000, 0x138E, 0x0000, 0x171C, 0x0000, 0x134E, 0x0080, 0x0041, 0x005E, 0x7C01, 0x7DE9, 0xFFFF, 0x0900, 0x1000, }, + {0x10C3, 0x0000, 0x128B, 0x0080, 0x1555, 0x0000, 0x165A, 0x0080, 0x0083, 0x00FA, 0x7C01, 0x7DE9, 0xFFFF, 0x1000, 0x9000, }, + {0x1104, 0x0000, 0x138E, 0x0000, 0x171C, 0x0000, 0x16DC, 0x0080, 0x0082, 0x00FA, 0x7C01, 0x7DE9, 0xFFFF, 0x1100, 0x1800, }, + {0x10C3, 0x0000, 0x128B, 0x0080, 0x1555, 0x0000, 0x169A, 0x0000, 0x0083, 0x00FA, 0x7C01, 0x7DE9, 0xFFFF, 0x1000, 0x9000, }, + {0x1104, 0x0000, 0x138E, 0x0000, 0x171C, 0x0000, 0x11C7, 0x0000, 0x1041, 0x01BC, 0x7C01, 0x7DE9, 0xFFFF, 0x9900, 0x8100, }, + {0x10C3, 0x0000, 0x128B, 0x0080, 0x1555, 0x0000, 0x169B, 0x0080, 0x0083, 0x00FA, 0x7C01, 0x7DE9, 0xFFFF, 0x1800, 0x0100, }, + {0x1104, 0x0000, 0x138E, 0x0000, 0x171C, 0x0000, 0x171D, 0x0080, 0x0082, 0x00FA, 0x7C01, 0x7DE9, 0xFFFF, 0x1100, 0x1800, }, + {0x10C3, 0x0000, 0x128B, 0x0080, 0x1555, 0x0000, 0x16DB, 0x0000, 0x0083, 0x00FA, 0x7C01, 0x7DE9, 0xFFFF, 0x1800, 0x0100, }, + {0x10C3, 0x0000, 0x128B, 0x0080, 0x1555, 0x0000, 0x1146, 0x0080, 0x1041, 0x0184, 0x7C01, 0x7DE9, 0xFFFF, 0x9900, 0x8100, }, + {0x10C3, 0x0000, 0x128B, 0x0080, 0x1555, 0x0000, 0x171C, 0x0000, 0x0083, 0x00FA, 0x7C01, 0x7DE9, 0xFFFF, 0x1100, 0x1800, }, + {0x10C3, 0x0000, 0x128B, 0x0080, 0x1555, 0x0000, 0x1451, 0x0000, 0x0042, 0x0013, 0x7C01, 0x7DE9, 0xFFFF, 0x0900, 0x1000, }, + {0x10C3, 0x0000, 0x128B, 0x0080, 0x1555, 0x0000, 0x171D, 0x0080, 0x0083, 0x00FA, 0x7C01, 0x7DE9, 0xFFFF, 0x1100, 0x1800, }, + {0x10C3, 0x0000, 0x128B, 0x0080, 0x1555, 0x0000, 0x175D, 0x0000, 0x0083, 0x00FA, 0x7C01, 0x7DE9, 0xFFFF, 0x0800, 0x1000, }, + {0x10C3, 0x0000, 0x128B, 0x0080, 0x1555, 0x0000, 0x1452, 0x0080, 0x0042, 0x0013, 0x7C01, 0x7DE9, 0xFFFF, 0x0900, 0x1000, }, + {0x10C3, 0x0000, 0x128B, 0x0080, 0x1555, 0x0000, 0x15D8, 0x0080, 0x0082, 0x00FA, 0x7C01, 0x7DE9, 0xFFFF, 0x1900, 0x0100, }, + {0x1082, 0x0000, 0x11C7, 0x0000, 0x138E, 0x0000, 0x1104, 0x0000, 0x1041, 0x01E8, 0x5801, 0x59E9, 0xFFFF, 0x9900, 0x0900, }, + {0x10C3, 0x0000, 0x128B, 0x0080, 0x1555, 0x0000, 0x179F, 0x0080, 0x0083, 0x00FA, 0x7C01, 0x7DE9, 0xFFFF, 0x0800, 0x1000, }, + {0x1082, 0x0000, 0x11C7, 0x0000, 0x138E, 0x0000, 0x1515, 0x0080, 0x0083, 0x00FA, 0x7C01, 0x7DE9, 0xFFFF, 0x0900, 0x1000, }, + {0x10C3, 0x0000, 0x128B, 0x0080, 0x1555, 0x0000, 0x17DF, 0x0000, 0x0083, 0x00FA, 0x7C01, 0x7DE9, 0xFFFF, 0x1000, 0x8800, }, + {0x1082, 0x0000, 0x11C7, 0x0000, 0x138E, 0x0000, 0x1659, 0x0000, 0x00C3, 0x00FA, 0x7C01, 0x7DE9, 0xFFFF, 0x1000, 0x9000, }, + {0x1082, 0x0000, 0x11C7, 0x0000, 0x138E, 0x0000, 0x1555, 0x0000, 0x0083, 0x00FA, 0x7C01, 0x7DE9, 0xFFFF, 0x0800, 0x8000, }, + {0x10C3, 0x0000, 0x128B, 0x0080, 0x1555, 0x0000, 0x14D3, 0x0000, 0x0042, 0x00FA, 0x7C01, 0x7DE9, 0xFFFF, 0x0900, 0x1000, }, + {0x10C3, 0x0000, 0x128B, 0x0080, 0x1555, 0x0000, 0x1820, 0x0000, 0x0083, 0x00FA, 0x7DE9, 0x7DE8, 0xFFFF, 0x0900, 0x9000, }, + {0x1082, 0x0000, 0x11C7, 0x0000, 0x138E, 0x0000, 0x1556, 0x0080, 0x0083, 0x00FA, 0x7C01, 0x7DE9, 0xFFFF, 0x0800, 0x8000, }, + {0x10C3, 0x0000, 0x128B, 0x0080, 0x1555, 0x0000, 0x1187, 0x0080, 0x1041, 0x01EE, 0x7C01, 0x7DE9, 0xFFFF, 0x9900, 0x8100, }, + {0x1082, 0x0000, 0x11C7, 0x0000, 0x138E, 0x0000, 0x1452, 0x0080, 0x0082, 0x0013, 0x7C01, 0x7DE9, 0xFFFF, 0x0900, 0x1000, }, + {0x1082, 0x0000, 0x11C7, 0x0000, 0x138E, 0x0000, 0x169B, 0x0080, 0x00C3, 0x00FA, 0x7C01, 0x7DE9, 0xFFFF, 0x1800, 0x0100, }, + {0x10C3, 0x0000, 0x128B, 0x0080, 0x1555, 0x0000, 0x1514, 0x0000, 0x0042, 0x00FA, 0x7C01, 0x7DE9, 0xFFFF, 0x0900, 0x1000, }, + {0x1082, 0x0000, 0x11C7, 0x0000, 0x138E, 0x0000, 0x17E0, 0x0080, 0x00C4, 0x00FA, 0x7C01, 0x7DE9, 0xFFFF, 0x0900, 0x9000, }, + {0x10C3, 0x0000, 0x128B, 0x0080, 0x1555, 0x0000, 0x1515, 0x0080, 0x0042, 0x00FA, 0x7C01, 0x7DE9, 0xFFFF, 0x0900, 0x1000, }, + {0x10C3, 0x0000, 0x128B, 0x0080, 0x1555, 0x0000, 0x16DC, 0x0080, 0x0082, 0x00FA, 0x7C01, 0x7DE9, 0xFFFF, 0x1100, 0x1800, }, + {0x1082, 0x0000, 0x11C7, 0x0000, 0x138E, 0x0000, 0x1493, 0x0080, 0x0082, 0x00FA, 0x7C01, 0x7DE9, 0xFFFF, 0x0900, 0x1000, }, + {0x1082, 0x0000, 0x11C7, 0x0000, 0x138E, 0x0000, 0x171C, 0x0000, 0x00C3, 0x00FA, 0x7C01, 0x7DE9, 0xFFFF, 0x1100, 0x1800, }, + {0x1082, 0x0000, 0x11C7, 0x0000, 0x138E, 0x0000, 0x15D8, 0x0080, 0x0083, 0x00FA, 0x7C01, 0x7DE9, 0xFFFF, 0x1900, 0x0100, }, + {0x1082, 0x0000, 0x11C7, 0x0000, 0x138E, 0x0000, 0x171D, 0x0080, 0x00C3, 0x00FA, 0x7C01, 0x7DE9, 0xFFFF, 0x1100, 0x1800, }, + {0x1082, 0x0000, 0x11C7, 0x0000, 0x138E, 0x0000, 0x1618, 0x0000, 0x0083, 0x00FA, 0x7C01, 0x7DE9, 0xFFFF, 0x1900, 0x0100, }, + {0x1082, 0x0000, 0x11C7, 0x0000, 0x138E, 0x0000, 0x175D, 0x0000, 0x00C3, 0x00FA, 0x7C01, 0x7DE9, 0xFFFF, 0x0800, 0x1000, }, + {0x1082, 0x0000, 0x11C7, 0x0000, 0x138E, 0x0000, 0x14D4, 0x0080, 0x0082, 0x00FA, 0x7C01, 0x7DE9, 0xFFFF, 0x0900, 0x1000, }, + {0x1082, 0x0000, 0x11C7, 0x0000, 0x138E, 0x0000, 0x1619, 0x0080, 0x0083, 0x00FA, 0x7C01, 0x7DE9, 0xFFFF, 0x1000, 0x9000, }, + {0x1082, 0x0000, 0x11C7, 0x0000, 0x138E, 0x0000, 0x179E, 0x0000, 0x00C3, 0x00FA, 0x7C01, 0x7DE9, 0xFFFF, 0x0800, 0x1000, }, + {0x1082, 0x0000, 0x11C7, 0x0000, 0x138E, 0x0000, 0x179F, 0x0080, 0x00C3, 0x00FA, 0x7C01, 0x7DE9, 0xFFFF, 0x0800, 0x1000, }, + {0x1082, 0x0000, 0x11C7, 0x0000, 0x138E, 0x0000, 0x1515, 0x0080, 0x0082, 0x00FA, 0x7C01, 0x7DE9, 0xFFFF, 0x0900, 0x1000, }, + {0x1082, 0x0000, 0x11C7, 0x0000, 0x138E, 0x0000, 0x13D0, 0x0080, 0x0042, 0x002C, 0x7C01, 0x7DE9, 0xFFFF, 0x0900, 0x1000, }, + {0x1082, 0x0000, 0x11C7, 0x0000, 0x138E, 0x0000, 0x169A, 0x0000, 0x0083, 0x00FA, 0x7C01, 0x7DE9, 0xFFFF, 0x1000, 0x9000, }, + {0x1082, 0x0000, 0x11C7, 0x0000, 0x138E, 0x0000, 0x128B, 0x0080, 0x0041, 0x00DB, 0x7C01, 0x7DE9, 0xFFFF, 0x9000, 0x0100, }, + {0x1082, 0x0000, 0x11C7, 0x0000, 0x138E, 0x0000, 0x169B, 0x0080, 0x0083, 0x00FA, 0x7C01, 0x7DE9, 0xFFFF, 0x1800, 0x0100, }, + {0x1082, 0x0000, 0x11C7, 0x0000, 0x138E, 0x0000, 0x1820, 0x0000, 0x00C3, 0x00FA, 0x7DE9, 0x7DE8, 0xFFFF, 0x0900, 0x9000, }, + {0x1082, 0x0000, 0x11C7, 0x0000, 0x138E, 0x0000, 0x1556, 0x0080, 0x0082, 0x00FA, 0x7C01, 0x7DE9, 0xFFFF, 0x0800, 0x8000, }, + {0x1082, 0x0000, 0x11C7, 0x0000, 0x138E, 0x0000, 0x16DB, 0x0000, 0x0083, 0x00FA, 0x7C01, 0x7DE9, 0xFFFF, 0x1800, 0x0100, }, + {0x1082, 0x0000, 0x11C7, 0x0000, 0x138E, 0x0000, 0x1411, 0x0080, 0x0042, 0x002C, 0x7C01, 0x7DE9, 0xFFFF, 0x0900, 0x1000, }, + {0x1082, 0x0000, 0x11C7, 0x0000, 0x138E, 0x0000, 0x171C, 0x0000, 0x0083, 0x00FA, 0x7C01, 0x7DE9, 0xFFFF, 0x1100, 0x1800, }, + {0x1082, 0x0000, 0x11C7, 0x0000, 0x138E, 0x0000, 0x1597, 0x0080, 0x0082, 0x00FA, 0x7C01, 0x7DE9, 0xFFFF, 0x0800, 0x8000, }, + {0x1082, 0x0000, 0x11C7, 0x0000, 0x138E, 0x0000, 0x1451, 0x0000, 0x0042, 0x0013, 0x7C01, 0x7DE9, 0xFFFF, 0x0900, 0x1000, }, + {0x1082, 0x0000, 0x11C7, 0x0000, 0x138E, 0x0000, 0x171D, 0x0080, 0x0083, 0x00FA, 0x7C01, 0x7DE9, 0xFFFF, 0x1100, 0x1800, }, + {0x1082, 0x0000, 0x11C7, 0x0000, 0x138E, 0x0000, 0x12CC, 0x0080, 0x0041, 0x00A9, 0x7C01, 0x7DE9, 0xFFFF, 0x1100, 0x9000, }, + {0x1082, 0x0000, 0x11C7, 0x0000, 0x138E, 0x0000, 0x175D, 0x0000, 0x0083, 0x00FA, 0x7C01, 0x7DE9, 0xFFFF, 0x0800, 0x1000, }, + {0x1082, 0x0000, 0x11C7, 0x0000, 0x138E, 0x0000, 0x1452, 0x0080, 0x0042, 0x0013, 0x7C01, 0x7DE9, 0xFFFF, 0x0900, 0x1000, }, + {0x1082, 0x0000, 0x11C7, 0x0000, 0x138E, 0x0000, 0x15D8, 0x0080, 0x0082, 0x00FA, 0x7C01, 0x7DE9, 0xFFFF, 0x1900, 0x0100, }, + {0x1082, 0x0000, 0x11C7, 0x0000, 0x138E, 0x0000, 0x175E, 0x0080, 0x0083, 0x00FA, 0x7C01, 0x7DE9, 0xFFFF, 0x0800, 0x1000, }, + {0x1082, 0x0000, 0x11C7, 0x0000, 0x138E, 0x0000, 0x1492, 0x0000, 0x0042, 0x0013, 0x7C01, 0x7DE9, 0xFFFF, 0x0900, 0x1000, }, + {0x1082, 0x0000, 0x11C7, 0x0000, 0x138E, 0x0000, 0x179F, 0x0080, 0x0083, 0x00FA, 0x7C01, 0x7DE9, 0xFFFF, 0x0800, 0x1000, }, + {0x1082, 0x0000, 0x11C7, 0x0000, 0x138E, 0x0000, 0x1619, 0x0080, 0x0082, 0x00FA, 0x7C01, 0x7DE9, 0xFFFF, 0x1000, 0x9000, }, + {0x1082, 0x0000, 0x11C7, 0x0000, 0x138E, 0x0000, 0x1493, 0x0080, 0x0042, 0x00FA, 0x7C01, 0x7DE9, 0xFFFF, 0x0900, 0x1000, }, + {0x1082, 0x0000, 0x11C7, 0x0000, 0x138E, 0x0000, 0x17DF, 0x0000, 0x0083, 0x00FA, 0x7C01, 0x7DE9, 0xFFFF, 0x1000, 0x8800, }, + {0x1082, 0x0000, 0x11C7, 0x0000, 0x138E, 0x0000, 0x130D, 0x0080, 0x0041, 0x0090, 0x7C01, 0x7DE9, 0xFFFF, 0x1100, 0x9000, }, + {0x1082, 0x0000, 0x11C7, 0x0000, 0x138E, 0x0000, 0x17E0, 0x0080, 0x0083, 0x00FA, 0x7C01, 0x7DE9, 0xFFFF, 0x0900, 0x9000, }, + {0x1082, 0x0000, 0x11C7, 0x0000, 0x138E, 0x0000, 0x14D3, 0x0000, 0x0042, 0x00FA, 0x7C01, 0x7DE9, 0xFFFF, 0x0900, 0x1000, }, + {0x1082, 0x0000, 0x11C7, 0x0000, 0x138E, 0x0000, 0x165A, 0x0080, 0x0082, 0x00FA, 0x7C01, 0x7DE9, 0xFFFF, 0x1000, 0x9000, }, + {0x1082, 0x0000, 0x11C7, 0x0000, 0x138E, 0x0000, 0x1820, 0x0000, 0x0083, 0x00FA, 0x7DE9, 0x7DE8, 0xFFFF, 0x0900, 0x9000, }, + {0x1082, 0x0000, 0x11C7, 0x0000, 0x138E, 0x0000, 0x14D4, 0x0080, 0x0042, 0x00FA, 0x7C01, 0x7DE9, 0xFFFF, 0x0900, 0x1000, }, + {0x1082, 0x0000, 0x11C7, 0x0000, 0x138E, 0x0000, 0x169B, 0x0080, 0x0082, 0x00FA, 0x7C01, 0x7DE9, 0xFFFF, 0x1800, 0x0100, }, +}; + +static const u16 cmt_vals_in[][13] = { + {0x1082, 0x0000, 0x5104, 0x0000, 0x11C7, 0x0000, 0x1041, 0x02BC, 0x7C01, 0xFFE9, 0x9900, 0x9908, 0x8100}, + {0x1104, 0x0000, 0x9208, 0x0000, 0x138E, 0x0000, 0x1041, 0x015E, 0x7C01, 0xFFE9, 0x0100, 0x0908, 0x1000}, +}; + +static const u32 cmt_addrs_out[][15] = { + {0x420, 0x424, 0x428, 0x42C, 0x430, 0x434, 0x450, 0x454, 0x458, 0x460, 0x464, 0x468, 0x4A0, 0x538, 0x53C}, + {0x620, 0x624, 0x628, 0x62C, 0x630, 0x634, 0x650, 0x654, 0x658, 0x660, 0x664, 0x668, 0x6A0, 0x738, 0x73C}, +}; + +static const u32 cmt_addrs_in[][13] = { + {0x020, 0x024, 0x028, 0x02C, 0x050, 0x054, 0x058, 0x060, 0x064, 0x068, 0x0A0, 0x138, 0x13C}, + {0x220, 0x224, 0x228, 0x22C, 0x250, 0x254, 0x258, 0x260, 0x264, 0x268, 0x2A0, 0x338, 0x33C}, +}; + +static const u32 cmt_freq[] = { + 25000, 25510, 26020, 26530, 26983, 27551, 28000, 28570, + 29046, 29522, 30000, 30476, 30952, 31546, 32000, 32539, + 33035, 33571, 33928, 34522, 35000, 35428, 36000, 36571, + 36904, 37500, 38093, 38571, 39047, 39453, 40000, 40476, + 40952, 41494, 41964, 42857, 43535, 44047, 44444, 45000, + 45535, 46029, 46428, 46823, 47617, 48214, 48571, 49107, + 49523, 50000, 50476, 50892, 51428, 52380, 53333, 53967, + 54285, 55238, 55555, 55952, 57142, 58095, 58571, 59047, + 59521, 60000, 60316, 60952, 61428, 61904, 62500, 63092, + 63491, 64282, 65078, 65476, 66071, 66664, 67142, 67854, + 68571, 69044, 69642, 70000, 71425, 72616, 73214, 73808, + 74285, 75000, 75714, 76187, 76785, 77142, 78570, 80000, + 80357, 80951, 81428, 82142, 82857, 83332, 83928, 84285, + 85713, 87142, 87500, 88094, 88571, 89285, 90000, 90475, + 91071, 91428, 92856, 94642, +}; + +static size_t freq_srch(u32 key, const u32 *array, size_t size) +{ + int l = 0; + int r = size - 1; + int m; + + while (l <= r) { + m = (l + r) / 2; + if (array[m] < key) + l = m + 1; + else if (array[m] > key) + r = m - 1; + else + return m; + } + + if (r < 0 || l > size - 1) + return m; + else + return (abs(key - array[l]) < abs(key - array[r])) ? l : r; +} + +u32 mgb4_cmt_set_vout(struct mgb4_vout_dev *voutdev, unsigned int freq) +{ + const u16 *reg_set; + const u32 *addr; + u32 config; + size_t i, index; + + index = freq_srch(freq, cmt_freq, ARRAY_SIZE(cmt_freq)); + addr = cmt_addrs_out[voutdev->config->id]; + reg_set = cmt_vals_out[index]; + + config = mgb4_read_reg(&voutdev->mgbdev->video, voutdev->config->regs.config); + + mgb4_write_reg(&voutdev->mgbdev->video, voutdev->config->regs.config, + 0x1 | (config & ~0x3)); + + for (i = 0; i < ARRAY_SIZE(cmt_addrs_out[0]); i++) + mgb4_write_reg(&voutdev->mgbdev->cmt, addr[i], reg_set[i]); + + mgb4_mask_reg(&voutdev->mgbdev->video, voutdev->config->regs.config, + 0x100, 0x100); + mgb4_mask_reg(&voutdev->mgbdev->video, voutdev->config->regs.config, + 0x100, 0x0); + + mgb4_write_reg(&voutdev->mgbdev->video, voutdev->config->regs.config, + config & ~0x1); + + return cmt_freq[index]; +} + +void mgb4_cmt_set_vin(struct mgb4_vin_dev *vindev, unsigned int freq_range) +{ + const u16 *reg_set; + const u32 *addr; + u32 config; + size_t i; + + addr = cmt_addrs_in[vindev->config->id]; + reg_set = cmt_vals_in[freq_range]; + + config = mgb4_read_reg(&vindev->mgbdev->video, vindev->config->regs.config); + + mgb4_write_reg(&vindev->mgbdev->video, vindev->config->regs.config, + 0x1 | (config & ~0x3)); + + for (i = 0; i < ARRAY_SIZE(cmt_addrs_in[0]); i++) + mgb4_write_reg(&vindev->mgbdev->cmt, addr[i], reg_set[i]); + + mgb4_mask_reg(&vindev->mgbdev->video, vindev->config->regs.config, + 0x1000, 0x1000); + mgb4_mask_reg(&vindev->mgbdev->video, vindev->config->regs.config, + 0x1000, 0x0); + + mgb4_write_reg(&vindev->mgbdev->video, vindev->config->regs.config, + config & ~0x1); +} diff --git a/drivers/media/pci/mgb4/mgb4_cmt.h b/drivers/media/pci/mgb4/mgb4_cmt.h new file mode 100644 index 000000000000..353966654c95 --- /dev/null +++ b/drivers/media/pci/mgb4/mgb4_cmt.h @@ -0,0 +1,16 @@ +/* SPDX-License-Identifier: GPL-2.0-only */ +/* + * Copyright (C) 2021-2022 Digiteq Automotive + * author: Martin Tuma + */ + +#ifndef __MGB4_CMT_H__ +#define __MGB4_CMT_H__ + +#include "mgb4_vout.h" +#include "mgb4_vin.h" + +u32 mgb4_cmt_set_vout(struct mgb4_vout_dev *voutdev, unsigned int freq); +void mgb4_cmt_set_vin(struct mgb4_vin_dev *vindev, unsigned int freq_range); + +#endif diff --git a/drivers/media/pci/mgb4/mgb4_core.c b/drivers/media/pci/mgb4/mgb4_core.c new file mode 100644 index 000000000000..cdf9d3287b4c --- /dev/null +++ b/drivers/media/pci/mgb4/mgb4_core.c @@ -0,0 +1,641 @@ +// SPDX-License-Identifier: GPL-2.0-only +/* + * This is the driver for the MGB4 video grabber card by Digiteq Automotive. + * + * Copyright (C) 2021-2022 Digiteq Automotive + * author: Martin Tuma + * + * This is the main driver module. The DMA, I2C and SPI sub-drivers are + * initialized here and the input/output v4l2 devices are created. + * + * The mgb4 card uses different expansion modules for different video sources + * (GMSL and FPDL3 for now) so in probe() we detect the module type based on + * what we see on the I2C bus and check if it matches the FPGA bitstream (there + * are different bitstreams for different expansion modules). When no expansion + * module is present, we still let the driver initialize to allow flashing of + * the FPGA firmware using the SPI FLASH device. No v4l2 video devices are + * created in this case. + */ + +#include +#include +#include +#include +#include +#include +#include +#include +#include +#include +#include +#include +#include +#include "mgb4_dma.h" +#include "mgb4_i2c.h" +#include "mgb4_sysfs.h" +#include "mgb4_vout.h" +#include "mgb4_vin.h" +#include "mgb4_trigger.h" +#include "mgb4_core.h" + +#define MGB4_USER_IRQS 16 + +static int flashid; + +static struct xdma_chan_info h2c_chan_info = { + .dir = DMA_MEM_TO_DEV, +}; + +static struct xdma_chan_info c2h_chan_info = { + .dir = DMA_DEV_TO_MEM, +}; + +static struct xspi_platform_data spi_platform_data = { + .num_chipselect = 1, + .bits_per_word = 8 +}; + +static const struct i2c_board_info extender_info = { + I2C_BOARD_INFO("extender", 0x21) +}; + +static int match_i2c_adap(struct device *dev, void *data) +{ + return i2c_verify_adapter(dev) ? 1 : 0; +} + +static struct i2c_adapter *get_i2c_adap(struct platform_device *pdev) +{ + struct device *dev; + int i; + + for (i = 0; i < 10; i++) { + msleep(100); + mutex_lock(&pdev->dev.mutex); + dev = device_find_child(&pdev->dev, NULL, match_i2c_adap); + mutex_unlock(&pdev->dev.mutex); + if (dev) + return to_i2c_adapter(dev); + } + + return NULL; +} + +static int match_spi_adap(struct device *dev, void *data) +{ + return to_spi_device(dev) ? 1 : 0; +} + +static struct spi_master *get_spi_adap(struct platform_device *pdev) +{ + struct device *dev; + int i; + + for (i = 0; i < 10; i++) { + msleep(100); + mutex_lock(&pdev->dev.mutex); + dev = device_find_child(&pdev->dev, NULL, match_spi_adap); + mutex_unlock(&pdev->dev.mutex); + if (dev) + return container_of(dev, struct spi_master, dev); + } + + return NULL; +} + +static int init_spi(struct mgb4_dev *mgbdev) +{ + struct resource spi_resources[] = { + { + .start = 0x400, + .end = 0x47f, + .flags = IORESOURCE_MEM, + .name = "io-memory", + }, + { + .start = 14, + .end = 14, + .flags = IORESOURCE_IRQ, + .name = "irq", + }, + }; + struct spi_board_info spi_info = { + .max_speed_hz = 10000000, + .modalias = "m25p80", + .chip_select = 0, + .mode = SPI_MODE_3, + }; + struct pci_dev *pdev = mgbdev->pdev; + struct device *dev = &pdev->dev; + struct spi_master *master; + struct spi_device *spi_dev; + u32 irq; + int rv, id; + resource_size_t mapbase = pci_resource_start(pdev, MGB4_MGB4_BAR_ID); + + irq = xdma_get_user_irq(mgbdev->xdev, 14); + xdma_enable_user_irq(mgbdev->xdev, irq); + + spi_resources[0].parent = &pdev->resource[MGB4_MGB4_BAR_ID]; + spi_resources[0].start += mapbase; + spi_resources[0].end += mapbase; + spi_resources[1].start = irq; + spi_resources[1].end = irq; + + id = pci_dev_id(pdev); + mgbdev->spi_pdev = platform_device_register_resndata(dev, "xilinx_spi", + id, spi_resources, + ARRAY_SIZE(spi_resources), + &spi_platform_data, + sizeof(spi_platform_data)); + if (IS_ERR(mgbdev->spi_pdev)) { + dev_err(dev, "failed to register SPI device\n"); + return PTR_ERR(mgbdev->spi_pdev); + } + + master = get_spi_adap(mgbdev->spi_pdev); + if (!master) { + dev_err(dev, "failed to get SPI adapter\n"); + rv = -EINVAL; + goto err_pdev; + } + + snprintf(mgbdev->fw_part_name, sizeof(mgbdev->fw_part_name), "mgb4-fw.%d", + flashid); + mgbdev->partitions[0].name = mgbdev->fw_part_name; + mgbdev->partitions[0].size = 0x400000; + mgbdev->partitions[0].offset = 0x400000; + mgbdev->partitions[0].mask_flags = 0; + + snprintf(mgbdev->data_part_name, sizeof(mgbdev->data_part_name), + "mgb4-data.%d", flashid); + mgbdev->partitions[1].name = mgbdev->data_part_name; + mgbdev->partitions[1].size = 0x10000; + mgbdev->partitions[1].offset = 0xFF0000; + mgbdev->partitions[1].mask_flags = MTD_CAP_NORFLASH; + + snprintf(mgbdev->flash_name, sizeof(mgbdev->flash_name), "mgb4-flash.%d", + flashid); + mgbdev->flash_data.name = mgbdev->flash_name; + mgbdev->flash_data.parts = mgbdev->partitions; + mgbdev->flash_data.nr_parts = ARRAY_SIZE(mgbdev->partitions); + mgbdev->flash_data.type = "spi-nor"; + + spi_info.platform_data = &mgbdev->flash_data; + + spi_dev = spi_new_device(master, &spi_info); + put_device(&master->dev); + if (!spi_dev) { + dev_err(dev, "failed to create MTD device\n"); + rv = -EINVAL; + goto err_pdev; + } + + return 0; + +err_pdev: + platform_device_unregister(mgbdev->spi_pdev); + + return rv; +} + +static void free_spi(struct mgb4_dev *mgbdev) +{ + platform_device_unregister(mgbdev->spi_pdev); +} + +static int init_i2c(struct mgb4_dev *mgbdev) +{ + struct resource i2c_resources[] = { + { + .start = 0x200, + .end = 0x3ff, + .flags = IORESOURCE_MEM, + .name = "io-memory", + }, + { + .start = 15, + .end = 15, + .flags = IORESOURCE_IRQ, + .name = "irq", + }, + }; + struct pci_dev *pdev = mgbdev->pdev; + struct device *dev = &pdev->dev; + char clk_name[16]; + u32 irq; + int rv, id; + resource_size_t mapbase = pci_resource_start(pdev, MGB4_MGB4_BAR_ID); + + irq = xdma_get_user_irq(mgbdev->xdev, 15); + xdma_enable_user_irq(mgbdev->xdev, irq); + + i2c_resources[0].parent = &pdev->resource[MGB4_MGB4_BAR_ID]; + i2c_resources[0].start += mapbase; + i2c_resources[0].end += mapbase; + i2c_resources[1].start = irq; + i2c_resources[1].end = irq; + + id = pci_dev_id(pdev); + + // create dummy clock required by the xiic-i2c adapter + snprintf(clk_name, sizeof(clk_name), "xiic-i2c.%d", id); + mgbdev->i2c_clk = clk_hw_register_fixed_rate(NULL, clk_name, NULL, 0, 125000000); + if (IS_ERR(mgbdev->i2c_clk)) { + dev_err(dev, "failed to register I2C clock\n"); + return PTR_ERR(mgbdev->i2c_clk); + } + mgbdev->i2c_cl = clkdev_hw_create(mgbdev->i2c_clk, NULL, "xiic-i2c.%d", id); + if (!mgbdev->i2c_cl) { + dev_err(dev, "failed to register I2C clockdev\n"); + rv = -ENOMEM; + goto err_clk; + } + + mgbdev->i2c_pdev = platform_device_register_resndata(dev, "xiic-i2c", + id, i2c_resources, + ARRAY_SIZE(i2c_resources), + NULL, 0); + if (IS_ERR(mgbdev->i2c_pdev)) { + dev_err(dev, "failed to register I2C device\n"); + rv = PTR_ERR(mgbdev->i2c_pdev); + goto err_clkdev; + } + + mgbdev->i2c_adap = get_i2c_adap(mgbdev->i2c_pdev); + if (!mgbdev->i2c_adap) { + dev_err(dev, "failed to get I2C adapter\n"); + rv = -EINVAL; + goto err_pdev; + } + + mutex_init(&mgbdev->i2c_lock); + + return 0; + +err_pdev: + platform_device_unregister(mgbdev->i2c_pdev); +err_clkdev: + clkdev_drop(mgbdev->i2c_cl); +err_clk: + clk_hw_unregister(mgbdev->i2c_clk); + + return rv; +} + +static void free_i2c(struct mgb4_dev *mgbdev) +{ + put_device(&mgbdev->i2c_adap->dev); + platform_device_unregister(mgbdev->i2c_pdev); + clkdev_drop(mgbdev->i2c_cl); + clk_hw_unregister(mgbdev->i2c_clk); +} + +static int init_sysfs(struct pci_dev *pdev) +{ + struct device_attribute **attr, **eattr; + int rv; + + for (attr = mgb4_pci_attrs; *attr; attr++) { + rv = device_create_file(&pdev->dev, *attr); + if (rv < 0) + goto err_file; + } + + return 0; + +err_file: + for (eattr = mgb4_pci_attrs; eattr != attr; eattr++) + device_remove_file(&pdev->dev, *eattr); + + return rv; +} + +static void free_sysfs(struct pci_dev *pdev) +{ + struct device_attribute **attr; + + for (attr = mgb4_pci_attrs; *attr; attr++) + device_remove_file(&pdev->dev, *attr); +} + +static int get_serial_number(struct mgb4_dev *mgbdev) +{ + struct device *dev = &mgbdev->pdev->dev; + struct mtd_info *mtd; + size_t rs; + int rv; + + mgbdev->serial_number = 0; + + mtd = get_mtd_device_nm(mgbdev->data_part_name); + if (IS_ERR(mtd)) { + dev_warn(dev, "failed to get data MTD device\n"); + return -ENOENT; + } + rv = mtd_read(mtd, 0, sizeof(mgbdev->serial_number), &rs, + (u_char *)&mgbdev->serial_number); + put_mtd_device(mtd); + if (rv < 0 || rs != sizeof(mgbdev->serial_number)) { + dev_warn(dev, "error reading MTD device\n"); + return -EIO; + } + + return 0; +} + +static int get_module_version(struct mgb4_dev *mgbdev) +{ + struct device *dev = &mgbdev->pdev->dev; + struct mgb4_i2c_client extender; + s32 version; + u32 fw_version; + int rv; + + rv = mgb4_i2c_init(&extender, mgbdev->i2c_adap, &extender_info, 8); + if (rv < 0) { + dev_err(dev, "failed to create extender I2C device\n"); + return rv; + } + version = mgb4_i2c_read_byte(&extender, 0x00); + mgb4_i2c_free(&extender); + if (version < 0) { + dev_err(dev, "error reading module version\n"); + return -EIO; + } + + mgbdev->module_version = ~((u32)version) & 0xff; + if (!(MGB4_IS_FPDL3(mgbdev) || MGB4_IS_GMSL(mgbdev))) { + dev_err(dev, "unknown module type\n"); + return -EINVAL; + } + fw_version = mgb4_read_reg(&mgbdev->video, 0xC4); + if (fw_version >> 24 != mgbdev->module_version >> 4) { + dev_err(dev, "module/firmware type mismatch\n"); + return -EINVAL; + } + + dev_info(dev, "%s module detected\n", + MGB4_IS_FPDL3(mgbdev) ? "FPDL3" : "GMSL"); + + return 0; +} + +static int map_regs(struct pci_dev *pdev, struct resource *res, + struct mgb4_regs *regs) +{ + int rv; + resource_size_t mapbase = pci_resource_start(pdev, MGB4_MGB4_BAR_ID); + + res->start += mapbase; + res->end += mapbase; + + rv = mgb4_regs_map(res, regs); + if (rv < 0) { + dev_err(&pdev->dev, "failed to map %s registers\n", res->name); + return rv; + } + + return 0; +} + +static int init_xdma(struct mgb4_dev *mgbdev) +{ + struct xdma_platdata data; + struct resource res[2] = { 0 }; + struct dma_slave_map *map; + struct pci_dev *pdev = mgbdev->pdev; + struct device *dev = &pdev->dev; + int i; + + res[0].start = pci_resource_start(pdev, MGB4_XDMA_BAR_ID); + res[0].end = pci_resource_end(pdev, MGB4_XDMA_BAR_ID); + res[0].flags = IORESOURCE_MEM; + res[0].parent = &pdev->resource[MGB4_XDMA_BAR_ID]; + res[1].start = pci_irq_vector(pdev, 0); + res[1].end = res[1].start + MGB4_VIN_DEVICES + MGB4_VOUT_DEVICES + + MGB4_USER_IRQS - 1; + res[1].flags = IORESOURCE_IRQ; + + data.max_dma_channels = MGB4_VIN_DEVICES + MGB4_VOUT_DEVICES; + data.device_map = mgbdev->slave_map; + data.device_map_cnt = MGB4_VIN_DEVICES + MGB4_VOUT_DEVICES; + + for (i = 0; i < MGB4_VIN_DEVICES; i++) { + sprintf(mgbdev->channel_names[i], "c2h%d", i); + map = &data.device_map[i]; + map->slave = mgbdev->channel_names[i]; + map->devname = dev_name(dev); + map->param = XDMA_FILTER_PARAM(&c2h_chan_info); + } + for (i = 0; i < MGB4_VOUT_DEVICES; i++) { + sprintf(mgbdev->channel_names[i + MGB4_VIN_DEVICES], "h2c%d", i); + map = &data.device_map[i + MGB4_VIN_DEVICES]; + map->slave = mgbdev->channel_names[i + MGB4_VIN_DEVICES]; + map->devname = dev_name(dev); + map->param = XDMA_FILTER_PARAM(&h2c_chan_info); + } + + mgbdev->xdev = platform_device_register_resndata(dev, "xdma", + PLATFORM_DEVID_AUTO, res, + 2, &data, sizeof(data)); + if (IS_ERR(mgbdev->xdev)) { + dev_err(dev, "failed to register XDMA device\n"); + return PTR_ERR(mgbdev->xdev); + } + + return 0; +} + +static void free_xdma(struct mgb4_dev *mgbdev) +{ + platform_device_unregister(mgbdev->xdev); +} + +static int mgb4_probe(struct pci_dev *pdev, const struct pci_device_id *id) +{ + int i, rv; + struct mgb4_dev *mgbdev; + struct resource video = { + .start = 0x0, + .end = 0x100, + .flags = IORESOURCE_MEM, + .name = "mgb4-video", + }; + struct resource cmt = { + .start = 0x1000, + .end = 0x1800, + .flags = IORESOURCE_MEM, + .name = "mgb4-cmt", + }; + int irqs = pci_msix_vec_count(pdev); + + mgbdev = kzalloc(sizeof(*mgbdev), GFP_KERNEL); + if (!mgbdev) + return -ENOMEM; + + mgbdev->pdev = pdev; + pci_set_drvdata(pdev, mgbdev); + + /* PCIe related stuff */ + rv = pci_enable_device(pdev); + if (rv) { + dev_err(&pdev->dev, "error enabling PCI device\n"); + goto err_mgbdev; + } + + rv = pcie_capability_set_word(pdev, PCI_EXP_DEVCTL, PCI_EXP_DEVCTL_RELAX_EN); + if (rv) + dev_warn(&pdev->dev, "error enabling PCIe relaxed ordering\n"); + rv = pcie_capability_set_word(pdev, PCI_EXP_DEVCTL, PCI_EXP_DEVCTL_EXT_TAG); + if (rv) + dev_warn(&pdev->dev, "error enabling PCIe extended tag field\n"); + rv = pcie_set_readrq(pdev, 512); + if (rv) + dev_warn(&pdev->dev, "error setting PCIe max. memory read size\n"); + pci_set_master(pdev); + + rv = pci_alloc_irq_vectors(pdev, irqs, irqs, PCI_IRQ_MSIX); + if (rv < 0) { + dev_err(&pdev->dev, "error allocating MSI-X IRQs\n"); + goto err_enable_pci; + } + + rv = dma_set_mask_and_coherent(&pdev->dev, DMA_BIT_MASK(64)); + if (rv) { + dev_err(&pdev->dev, "error setting DMA mask\n"); + goto err_enable_pci; + } + + /* DMA + IRQ engine */ + rv = init_xdma(mgbdev); + if (rv) + goto err_alloc_irq; + rv = mgb4_dma_channel_init(mgbdev); + if (rv) + goto err_dma_chan; + + /* mgb4 video registers */ + rv = map_regs(pdev, &video, &mgbdev->video); + if (rv < 0) + goto err_dma_chan; + /* mgb4 cmt registers */ + rv = map_regs(pdev, &cmt, &mgbdev->cmt); + if (rv < 0) + goto err_video_regs; + + /* SPI FLASH */ + rv = init_spi(mgbdev); + if (rv < 0) + goto err_cmt_regs; + + /* I2C controller */ + rv = init_i2c(mgbdev); + if (rv < 0) + goto err_spi; + + /* PCI card related sysfs attributes */ + rv = init_sysfs(pdev); + if (rv < 0) + goto err_i2c; + + /* Get card serial number. On systems without MTD flash support we may + * get an error thus ignore the return value. An invalid serial number + * should not break anything... + */ + if (get_serial_number(mgbdev) < 0) + dev_warn(&pdev->dev, "error reading card serial number\n"); + + /* Get module type. If no valid module is found, skip the video device + * creation part but do not exit with error to allow flashing the card. + */ + rv = get_module_version(mgbdev); + if (rv < 0) + goto exit; + + /* Video input v4l2 devices */ + for (i = 0; i < MGB4_VIN_DEVICES; i++) + mgbdev->vin[i] = mgb4_vin_create(mgbdev, i); + + /* Video output v4l2 devices */ + for (i = 0; i < MGB4_VOUT_DEVICES; i++) + mgbdev->vout[i] = mgb4_vout_create(mgbdev, i); + + /* Triggers */ + mgbdev->indio_dev = mgb4_trigger_create(mgbdev); + +exit: + flashid++; + + return 0; + +err_i2c: + free_i2c(mgbdev); +err_spi: + free_spi(mgbdev); +err_cmt_regs: + mgb4_regs_free(&mgbdev->cmt); +err_video_regs: + mgb4_regs_free(&mgbdev->video); +err_dma_chan: + mgb4_dma_channel_free(mgbdev); + free_xdma(mgbdev); +err_alloc_irq: + pci_disable_msix(pdev); +err_enable_pci: + pci_disable_device(pdev); +err_mgbdev: + kfree(mgbdev); + + return rv; +} + +static void mgb4_remove(struct pci_dev *pdev) +{ + struct mgb4_dev *mgbdev = pci_get_drvdata(pdev); + int i; + + if (mgbdev->indio_dev) + mgb4_trigger_free(mgbdev->indio_dev); + + for (i = 0; i < MGB4_VOUT_DEVICES; i++) + if (mgbdev->vout[i]) + mgb4_vout_free(mgbdev->vout[i]); + for (i = 0; i < MGB4_VIN_DEVICES; i++) + if (mgbdev->vin[i]) + mgb4_vin_free(mgbdev->vin[i]); + + free_sysfs(mgbdev->pdev); + free_spi(mgbdev); + free_i2c(mgbdev); + mgb4_regs_free(&mgbdev->video); + mgb4_regs_free(&mgbdev->cmt); + + mgb4_dma_channel_free(mgbdev); + free_xdma(mgbdev); + + pci_disable_msix(mgbdev->pdev); + pci_disable_device(mgbdev->pdev); + + kfree(mgbdev); +} + +static const struct pci_device_id mgb4_pci_ids[] = { + { PCI_DEVICE(0x1ed8, 0x0101), }, + { 0, } +}; +MODULE_DEVICE_TABLE(pci, mgb4_pci_ids); + +static struct pci_driver mgb4_pci_driver = { + .name = KBUILD_MODNAME, + .id_table = mgb4_pci_ids, + .probe = mgb4_probe, + .remove = mgb4_remove, +}; + +module_pci_driver(mgb4_pci_driver); + +MODULE_AUTHOR("Digiteq Automotive s.r.o."); +MODULE_DESCRIPTION("Digiteq Automotive MGB4 Driver"); +MODULE_LICENSE("GPL"); +MODULE_SOFTDEP("pre: platform:xiic-i2c platform:xilinx_spi spi-nor"); diff --git a/drivers/media/pci/mgb4/mgb4_core.h b/drivers/media/pci/mgb4/mgb4_core.h new file mode 100644 index 000000000000..de519f91d734 --- /dev/null +++ b/drivers/media/pci/mgb4/mgb4_core.h @@ -0,0 +1,65 @@ +/* SPDX-License-Identifier: GPL-2.0-only */ +/* + * Copyright (C) 2021-2022 Digiteq Automotive + * author: Martin Tuma + */ + +#ifndef __MGB4_CORE_H__ +#define __MGB4_CORE_H__ + +#include +#include +#include +#include +#include "mgb4_regs.h" + +#define MGB4_VIN_DEVICES 2 +#define MGB4_VOUT_DEVICES 2 + +#define MGB4_MGB4_BAR_ID 0 +#define MGB4_XDMA_BAR_ID 1 + +#define MGB4_IS_GMSL(mgbdev) \ + ((mgbdev)->module_version >> 4 == 2) +#define MGB4_IS_FPDL3(mgbdev) \ + ((mgbdev)->module_version >> 4 == 1) + +struct mgb4_dma_channel { + struct dma_chan *chan; + struct completion req_compl; +}; + +struct mgb4_dev { + struct pci_dev *pdev; + struct platform_device *xdev; + struct mgb4_vin_dev *vin[MGB4_VIN_DEVICES]; + struct mgb4_vout_dev *vout[MGB4_VOUT_DEVICES]; + + struct mgb4_dma_channel c2h_chan[MGB4_VIN_DEVICES]; + struct mgb4_dma_channel h2c_chan[MGB4_VOUT_DEVICES]; + struct dma_slave_map slave_map[MGB4_VIN_DEVICES + MGB4_VOUT_DEVICES]; + + struct mgb4_regs video; + struct mgb4_regs cmt; + + struct clk_hw *i2c_clk; + struct clk_lookup *i2c_cl; + struct platform_device *i2c_pdev; + struct i2c_adapter *i2c_adap; + struct mutex i2c_lock; /* I2C bus access lock */ + + struct platform_device *spi_pdev; + struct flash_platform_data flash_data; + struct mtd_partition partitions[2]; + char flash_name[16]; + char fw_part_name[16]; + char data_part_name[16]; + char channel_names[MGB4_VIN_DEVICES + MGB4_VOUT_DEVICES][16]; + + struct iio_dev *indio_dev; + + u8 module_version; + u32 serial_number; +}; + +#endif diff --git a/drivers/media/pci/mgb4/mgb4_dma.c b/drivers/media/pci/mgb4/mgb4_dma.c new file mode 100644 index 000000000000..cae888e6504b --- /dev/null +++ b/drivers/media/pci/mgb4/mgb4_dma.c @@ -0,0 +1,123 @@ +// SPDX-License-Identifier: GPL-2.0-only +/* + * Copyright (C) 2021-2022 Digiteq Automotive + * author: Martin Tuma + * + * This module handles the DMA transfers. A standard dmaengine API as provided + * by the XDMA module is used. + */ + +#include +#include +#include "mgb4_core.h" +#include "mgb4_dma.h" + +static void chan_irq(void *param) +{ + struct mgb4_dma_channel *chan = param; + + complete(&chan->req_compl); +} + +int mgb4_dma_transfer(struct mgb4_dev *mgbdev, u32 channel, bool write, + u64 paddr, struct sg_table *sgt) +{ + struct dma_slave_config cfg; + struct mgb4_dma_channel *chan; + struct dma_async_tx_descriptor *tx; + struct pci_dev *pdev = mgbdev->pdev; + int ret; + + memset(&cfg, 0, sizeof(cfg)); + + if (write) { + cfg.direction = DMA_MEM_TO_DEV; + cfg.dst_addr = paddr; + cfg.dst_addr_width = DMA_SLAVE_BUSWIDTH_4_BYTES; + chan = &mgbdev->h2c_chan[channel]; + } else { + cfg.direction = DMA_DEV_TO_MEM; + cfg.src_addr = paddr; + cfg.src_addr_width = DMA_SLAVE_BUSWIDTH_4_BYTES; + chan = &mgbdev->c2h_chan[channel]; + } + + ret = dmaengine_slave_config(chan->chan, &cfg); + if (ret) { + dev_err(&pdev->dev, "failed to config dma: %d\n", ret); + return ret; + } + + tx = dmaengine_prep_slave_sg(chan->chan, sgt->sgl, sgt->nents, + cfg.direction, 0); + if (!tx) { + dev_err(&pdev->dev, "failed to prep slave sg\n"); + return -EIO; + } + + tx->callback = chan_irq; + tx->callback_param = chan; + + ret = dma_submit_error(dmaengine_submit(tx)); + if (ret) { + dev_err(&pdev->dev, "failed to submit sg\n"); + return -EIO; + } + + dma_async_issue_pending(chan->chan); + + if (!wait_for_completion_timeout(&chan->req_compl, + msecs_to_jiffies(10000))) { + dev_err(&pdev->dev, "dma timeout\n"); + dmaengine_terminate_sync(chan->chan); + return -EIO; + } + + return 0; +} + +int mgb4_dma_channel_init(struct mgb4_dev *mgbdev) +{ + int i, ret; + char name[16]; + struct pci_dev *pdev = mgbdev->pdev; + + for (i = 0; i < MGB4_VIN_DEVICES; i++) { + sprintf(name, "c2h%d", i); + mgbdev->c2h_chan[i].chan = dma_request_chan(&pdev->dev, name); + if (IS_ERR(mgbdev->c2h_chan[i].chan)) { + dev_err(&pdev->dev, "failed to initialize %s", name); + ret = PTR_ERR(mgbdev->c2h_chan[i].chan); + mgbdev->c2h_chan[i].chan = NULL; + return ret; + } + init_completion(&mgbdev->c2h_chan[i].req_compl); + } + for (i = 0; i < MGB4_VOUT_DEVICES; i++) { + sprintf(name, "h2c%d", i); + mgbdev->h2c_chan[i].chan = dma_request_chan(&pdev->dev, name); + if (IS_ERR(mgbdev->h2c_chan[i].chan)) { + dev_err(&pdev->dev, "failed to initialize %s", name); + ret = PTR_ERR(mgbdev->h2c_chan[i].chan); + mgbdev->h2c_chan[i].chan = NULL; + return ret; + } + init_completion(&mgbdev->h2c_chan[i].req_compl); + } + + return 0; +} + +void mgb4_dma_channel_free(struct mgb4_dev *mgbdev) +{ + int i; + + for (i = 0; i < MGB4_VIN_DEVICES; i++) { + if (mgbdev->c2h_chan[i].chan) + dma_release_channel(mgbdev->c2h_chan[i].chan); + } + for (i = 0; i < MGB4_VOUT_DEVICES; i++) { + if (mgbdev->h2c_chan[i].chan) + dma_release_channel(mgbdev->h2c_chan[i].chan); + } +} diff --git a/drivers/media/pci/mgb4/mgb4_dma.h b/drivers/media/pci/mgb4/mgb4_dma.h new file mode 100644 index 000000000000..3710c2c893c7 --- /dev/null +++ b/drivers/media/pci/mgb4/mgb4_dma.h @@ -0,0 +1,18 @@ +/* SPDX-License-Identifier: GPL-2.0-only */ +/* + * Copyright (C) 2021-2022 Digiteq Automotive + * author: Martin Tuma + */ + +#ifndef __MGB4_DMA_H__ +#define __MGB4_DMA_H__ + +#include "mgb4_core.h" + +int mgb4_dma_channel_init(struct mgb4_dev *mgbdev); +void mgb4_dma_channel_free(struct mgb4_dev *mgbdev); + +int mgb4_dma_transfer(struct mgb4_dev *mgbdev, u32 channel, bool write, u64 paddr, + struct sg_table *sgt); + +#endif diff --git a/drivers/media/pci/mgb4/mgb4_i2c.c b/drivers/media/pci/mgb4/mgb4_i2c.c new file mode 100644 index 000000000000..999a0490a321 --- /dev/null +++ b/drivers/media/pci/mgb4/mgb4_i2c.c @@ -0,0 +1,140 @@ +// SPDX-License-Identifier: GPL-2.0-only +/* + * Copyright (C) 2021-2022 Digiteq Automotive + * author: Martin Tuma + * + * The i2c module unifies the I2C access to the serializes/deserializes. The I2C + * chips on the GMSL module use 16b addressing, the FPDL3 chips use standard + * 8b addressing. + */ + +#include "mgb4_i2c.h" + +static int read_r16(struct i2c_client *client, u16 reg, u8 *val, int len) +{ + int ret; + u8 buf[2]; + struct i2c_msg msg[2] = { + { + .addr = client->addr, + .flags = 0, + .len = 2, + .buf = buf, + }, { + .addr = client->addr, + .flags = I2C_M_RD, + .len = len, + .buf = val, + } + }; + + buf[0] = (reg >> 8) & 0xff; + buf[1] = (reg >> 0) & 0xff; + + ret = i2c_transfer(client->adapter, msg, 2); + if (ret < 0) + return ret; + else if (ret != 2) + return -EREMOTEIO; + else + return 0; +} + +static int write_r16(struct i2c_client *client, u16 reg, const u8 *val, int len) +{ + int ret; + u8 buf[4]; + struct i2c_msg msg[1] = { + { + .addr = client->addr, + .flags = 0, + .len = 2 + len, + .buf = buf, + } + }; + + if (2 + len > sizeof(buf)) + return -EINVAL; + + buf[0] = (reg >> 8) & 0xff; + buf[1] = (reg >> 0) & 0xff; + memcpy(&buf[2], val, len); + + ret = i2c_transfer(client->adapter, msg, 1); + if (ret < 0) + return ret; + else if (ret != 1) + return -EREMOTEIO; + else + return 0; +} + +int mgb4_i2c_init(struct mgb4_i2c_client *client, struct i2c_adapter *adap, + struct i2c_board_info const *info, int addr_size) +{ + client->client = i2c_new_client_device(adap, info); + if (IS_ERR(client->client)) + return PTR_ERR(client->client); + + client->addr_size = addr_size; + + return 0; +} + +void mgb4_i2c_free(struct mgb4_i2c_client *client) +{ + i2c_unregister_device(client->client); +} + +s32 mgb4_i2c_read_byte(struct mgb4_i2c_client *client, u16 reg) +{ + int ret; + u8 b; + + if (client->addr_size == 8) + return i2c_smbus_read_byte_data(client->client, reg); + + ret = read_r16(client->client, reg, &b, 1); + if (ret < 0) + return ret; + + return (s32)b; +} + +s32 mgb4_i2c_write_byte(struct mgb4_i2c_client *client, u16 reg, u8 val) +{ + if (client->addr_size == 8) + return i2c_smbus_write_byte_data(client->client, reg, val); + else + return write_r16(client->client, reg, &val, 1); +} + +s32 mgb4_i2c_mask_byte(struct mgb4_i2c_client *client, u16 reg, u8 mask, u8 val) +{ + s32 ret; + + if (mask != 0xFF) { + ret = mgb4_i2c_read_byte(client, reg); + if (ret < 0) + return ret; + val |= (u8)ret & ~mask; + } + + return mgb4_i2c_write_byte(client, reg, val); +} + +int mgb4_i2c_configure(struct mgb4_i2c_client *client, + const struct mgb4_i2c_kv *values, size_t count) +{ + size_t i; + s32 res; + + for (i = 0; i < count; i++) { + res = mgb4_i2c_mask_byte(client, values[i].reg, values[i].mask, + values[i].val); + if (res < 0) + return res; + } + + return 0; +} diff --git a/drivers/media/pci/mgb4/mgb4_i2c.h b/drivers/media/pci/mgb4/mgb4_i2c.h new file mode 100644 index 000000000000..9f3c1b7c2c99 --- /dev/null +++ b/drivers/media/pci/mgb4/mgb4_i2c.h @@ -0,0 +1,35 @@ +/* SPDX-License-Identifier: GPL-2.0-only */ +/* + * Copyright (C) 2021-2022 Digiteq Automotive + * author: Martin Tuma + */ + +#ifndef __MGB4_I2C_H__ +#define __MGB4_I2C_H__ + +#include + +struct mgb4_i2c_client { + struct i2c_client *client; + int addr_size; +}; + +struct mgb4_i2c_kv { + u16 reg; + u8 mask; + u8 val; +}; + +int mgb4_i2c_init(struct mgb4_i2c_client *client, struct i2c_adapter *adap, + struct i2c_board_info const *info, int addr_size); +void mgb4_i2c_free(struct mgb4_i2c_client *client); + +s32 mgb4_i2c_read_byte(struct mgb4_i2c_client *client, u16 reg); +s32 mgb4_i2c_write_byte(struct mgb4_i2c_client *client, u16 reg, u8 val); +s32 mgb4_i2c_mask_byte(struct mgb4_i2c_client *client, u16 reg, u8 mask, + u8 val); + +int mgb4_i2c_configure(struct mgb4_i2c_client *client, + const struct mgb4_i2c_kv *values, size_t count); + +#endif diff --git a/drivers/media/pci/mgb4/mgb4_io.h b/drivers/media/pci/mgb4/mgb4_io.h new file mode 100644 index 000000000000..5e8a5e0495b7 --- /dev/null +++ b/drivers/media/pci/mgb4/mgb4_io.h @@ -0,0 +1,39 @@ +/* SPDX-License-Identifier: GPL-2.0-only */ +/* + * Copyright (C) 2021-2022 Digiteq Automotive + * author: Martin Tuma + */ + +#ifndef __MGB4_IO_H__ +#define __MGB4_IO_H__ + +#include + +#define DEFAULT_WIDTH 1280 +#define DEFAULT_HEIGHT 640 +#define DEFAULT_PERIOD (125000000 / 60) + +#define ERR_NO_REG 0xFFFFFFFE +#define ERR_QUEUE_TIMEOUT 0xFFFFFFFD +#define ERR_QUEUE_EMPTY 0xFFFFFFFC +#define ERR_QUEUE_FULL 0xFFFFFFFB + +#define BYTESPERLINE(width, alignment) \ + (((((width) * 4) - 1) | ((alignment) - 1)) + 1) + +struct frame_buffer { + struct vb2_v4l2_buffer vb; + struct list_head list; +}; + +static inline struct frame_buffer *to_frame_buffer(struct vb2_v4l2_buffer *vbuf) +{ + return container_of(vbuf, struct frame_buffer, vb); +} + +static inline u32 PADDING(u32 width, u32 alignment) +{ + return ((BYTESPERLINE(width, alignment) - (width * 4)) / 4); +} + +#endif diff --git a/drivers/media/pci/mgb4/mgb4_regs.c b/drivers/media/pci/mgb4/mgb4_regs.c new file mode 100644 index 000000000000..53d4e4503a74 --- /dev/null +++ b/drivers/media/pci/mgb4/mgb4_regs.c @@ -0,0 +1,30 @@ +// SPDX-License-Identifier: GPL-2.0-only +/* + * Copyright (C) 2021-2022 Digiteq Automotive + * author: Martin Tuma + */ + +#include +#include "mgb4_regs.h" + +int mgb4_regs_map(struct resource *res, struct mgb4_regs *regs) +{ + regs->mapbase = res->start; + regs->mapsize = res->end - res->start; + + if (!request_mem_region(regs->mapbase, regs->mapsize, res->name)) + return -EINVAL; + regs->membase = ioremap(regs->mapbase, regs->mapsize); + if (!regs->membase) { + release_mem_region(regs->mapbase, regs->mapsize); + return -EINVAL; + } + + return 0; +} + +void mgb4_regs_free(struct mgb4_regs *regs) +{ + iounmap(regs->membase); + release_mem_region(regs->mapbase, regs->mapsize); +} diff --git a/drivers/media/pci/mgb4/mgb4_regs.h b/drivers/media/pci/mgb4/mgb4_regs.h new file mode 100644 index 000000000000..c45180890730 --- /dev/null +++ b/drivers/media/pci/mgb4/mgb4_regs.h @@ -0,0 +1,35 @@ +/* SPDX-License-Identifier: GPL-2.0-only */ +/* + * Copyright (C) 2021-2022 Digiteq Automotive + * author: Martin Tuma + */ + +#ifndef __MGB4_REGS_H__ +#define __MGB4_REGS_H__ + +#include + +struct mgb4_regs { + resource_size_t mapbase; + resource_size_t mapsize; + void __iomem *membase; +}; + +#define mgb4_write_reg(regs, offset, val) \ + iowrite32(val, (regs)->membase + (offset)) +#define mgb4_read_reg(regs, offset) \ + ioread32((regs)->membase + (offset)) + +static inline void mgb4_mask_reg(struct mgb4_regs *regs, u32 reg, u32 mask, + u32 val) +{ + u32 ret = mgb4_read_reg(regs, reg); + + val |= ret & ~mask; + mgb4_write_reg(regs, reg, val); +} + +int mgb4_regs_map(struct resource *res, struct mgb4_regs *regs); +void mgb4_regs_free(struct mgb4_regs *regs); + +#endif diff --git a/drivers/media/pci/mgb4/mgb4_sysfs.h b/drivers/media/pci/mgb4/mgb4_sysfs.h new file mode 100644 index 000000000000..2b42a8ba37f7 --- /dev/null +++ b/drivers/media/pci/mgb4/mgb4_sysfs.h @@ -0,0 +1,18 @@ +/* SPDX-License-Identifier: GPL-2.0-only */ +/* + * Copyright (C) 2021-2022 Digiteq Automotive + * author: Martin Tuma + */ + +#ifndef __MGB4_SYSFS_H__ +#define __MGB4_SYSFS_H__ + +#include + +extern struct device_attribute *mgb4_pci_attrs[]; +extern struct device_attribute *mgb4_fpdl3_in_attrs[]; +extern struct device_attribute *mgb4_gmsl_in_attrs[]; +extern struct device_attribute *mgb4_fpdl3_out_attrs[]; +extern struct device_attribute *mgb4_gmsl_out_attrs[]; + +#endif diff --git a/drivers/media/pci/mgb4/mgb4_sysfs_in.c b/drivers/media/pci/mgb4/mgb4_sysfs_in.c new file mode 100644 index 000000000000..f8aedf33507c --- /dev/null +++ b/drivers/media/pci/mgb4/mgb4_sysfs_in.c @@ -0,0 +1,780 @@ +// SPDX-License-Identifier: GPL-2.0-only +/* + * Copyright (C) 2021-2022 Digiteq Automotive + * author: Martin Tuma + * + * This module handles all the sysfs info/configuration that is related to the + * v4l2 input devices. + */ + +#include +#include "mgb4_core.h" +#include "mgb4_i2c.h" +#include "mgb4_vin.h" +#include "mgb4_cmt.h" +#include "mgb4_sysfs.h" + +/* Common for both FPDL3 and GMSL */ + +static ssize_t read_input_id(struct device *dev, + struct device_attribute *attr, char *buf) +{ + struct video_device *vdev = to_video_device(dev); + struct mgb4_vin_dev *vindev = video_get_drvdata(vdev); + + return sprintf(buf, "%d\n", vindev->config->id); +} + +static ssize_t read_oldi_lane_width(struct device *dev, + struct device_attribute *attr, char *buf) +{ + struct video_device *vdev = to_video_device(dev); + struct mgb4_vin_dev *vindev = video_get_drvdata(vdev); + u16 i2c_reg; + u8 i2c_mask, i2c_single_val, i2c_dual_val; + u32 config; + int ret; + + i2c_reg = MGB4_IS_GMSL(vindev->mgbdev) ? 0x1CE : 0x49; + i2c_mask = MGB4_IS_GMSL(vindev->mgbdev) ? 0x0E : 0x03; + i2c_single_val = MGB4_IS_GMSL(vindev->mgbdev) ? 0x00 : 0x02; + i2c_dual_val = MGB4_IS_GMSL(vindev->mgbdev) ? 0x0E : 0x00; + + mutex_lock(&vindev->mgbdev->i2c_lock); + ret = mgb4_i2c_read_byte(&vindev->deser, i2c_reg); + mutex_unlock(&vindev->mgbdev->i2c_lock); + if (ret < 0) + return -EIO; + + config = mgb4_read_reg(&vindev->mgbdev->video, vindev->config->regs.config); + + if (((config & (1U << 9)) && ((ret & i2c_mask) != i2c_dual_val)) || + (!(config & (1U << 9)) && ((ret & i2c_mask) != i2c_single_val))) { + dev_err(dev, "I2C/FPGA register value mismatch\n"); + return -EINVAL; + } + + return sprintf(buf, "%s\n", config & (1U << 9) ? "1" : "0"); +} + +static ssize_t write_oldi_lane_width(struct device *dev, + struct device_attribute *attr, + const char *buf, size_t count) +{ + struct video_device *vdev = to_video_device(dev); + struct mgb4_vin_dev *vindev = video_get_drvdata(vdev); + u32 fpga_data; + u16 i2c_reg; + u8 i2c_mask, i2c_data; + unsigned long val; + int ret; + + ret = kstrtoul(buf, 10, &val); + if (ret) + return ret; + + switch (val) { + case 0: /* single */ + fpga_data = 0; + i2c_data = MGB4_IS_GMSL(vindev->mgbdev) ? 0x00 : 0x02; + break; + case 1: /* dual */ + fpga_data = 1U << 9; + i2c_data = MGB4_IS_GMSL(vindev->mgbdev) ? 0x0E : 0x00; + break; + default: + return -EINVAL; + } + + i2c_reg = MGB4_IS_GMSL(vindev->mgbdev) ? 0x1CE : 0x49; + i2c_mask = MGB4_IS_GMSL(vindev->mgbdev) ? 0x0E : 0x03; + + mutex_lock(&vindev->mgbdev->i2c_lock); + ret = mgb4_i2c_mask_byte(&vindev->deser, i2c_reg, i2c_mask, i2c_data); + mutex_unlock(&vindev->mgbdev->i2c_lock); + if (ret < 0) + return -EIO; + mgb4_mask_reg(&vindev->mgbdev->video, vindev->config->regs.config, + 1U << 9, fpga_data); + if (MGB4_IS_GMSL(vindev->mgbdev)) { + /* reset input link */ + mutex_lock(&vindev->mgbdev->i2c_lock); + ret = mgb4_i2c_mask_byte(&vindev->deser, 0x10, 1U << 5, 1U << 5); + mutex_unlock(&vindev->mgbdev->i2c_lock); + if (ret < 0) + return -EIO; + } + + return count; +} + +static ssize_t read_color_mapping(struct device *dev, + struct device_attribute *attr, char *buf) +{ + struct video_device *vdev = to_video_device(dev); + struct mgb4_vin_dev *vindev = video_get_drvdata(vdev); + u32 config = mgb4_read_reg(&vindev->mgbdev->video, + vindev->config->regs.config); + + return sprintf(buf, "%s\n", config & (1U << 8) ? "0" : "1"); +} + +static ssize_t write_color_mapping(struct device *dev, + struct device_attribute *attr, + const char *buf, size_t count) +{ + struct video_device *vdev = to_video_device(dev); + struct mgb4_vin_dev *vindev = video_get_drvdata(vdev); + u32 fpga_data; + unsigned long val; + int ret; + + ret = kstrtoul(buf, 10, &val); + if (ret) + return ret; + + switch (val) { + case 0: /* OLDI/JEIDA */ + fpga_data = (1U << 8); + break; + case 1: /* SPWG/VESA */ + fpga_data = 0; + break; + default: + return -EINVAL; + } + + mgb4_mask_reg(&vindev->mgbdev->video, vindev->config->regs.config, + 1U << 8, fpga_data); + + return count; +} + +static ssize_t read_link_status(struct device *dev, struct device_attribute *attr, + char *buf) +{ + struct video_device *vdev = to_video_device(dev); + struct mgb4_vin_dev *vindev = video_get_drvdata(vdev); + u32 status = mgb4_read_reg(&vindev->mgbdev->video, vindev->config->regs.status); + + return sprintf(buf, "%s\n", status & (1U << 2) ? "1" : "0"); +} + +static ssize_t read_stream_status(struct device *dev, struct device_attribute *attr, + char *buf) +{ + struct video_device *vdev = to_video_device(dev); + struct mgb4_vin_dev *vindev = video_get_drvdata(vdev); + u32 status = mgb4_read_reg(&vindev->mgbdev->video, vindev->config->regs.status); + + return sprintf(buf, "%s\n", ((status & (1 << 14)) && + (status & (1 << 2)) && (status & (3 << 9))) ? "1" : "0"); +} + +static ssize_t read_video_width(struct device *dev, + struct device_attribute *attr, char *buf) +{ + struct video_device *vdev = to_video_device(dev); + struct mgb4_vin_dev *vindev = video_get_drvdata(vdev); + u32 config = mgb4_read_reg(&vindev->mgbdev->video, + vindev->config->regs.resolution); + + return sprintf(buf, "%u\n", config >> 16); +} + +static ssize_t read_video_height(struct device *dev, + struct device_attribute *attr, char *buf) +{ + struct video_device *vdev = to_video_device(dev); + struct mgb4_vin_dev *vindev = video_get_drvdata(vdev); + u32 config = mgb4_read_reg(&vindev->mgbdev->video, + vindev->config->regs.resolution); + + return sprintf(buf, "%u\n", config & 0xFFFF); +} + +static ssize_t read_hsync_status(struct device *dev, struct device_attribute *attr, + char *buf) +{ + struct video_device *vdev = to_video_device(dev); + struct mgb4_vin_dev *vindev = video_get_drvdata(vdev); + u32 status = mgb4_read_reg(&vindev->mgbdev->video, vindev->config->regs.status); + u32 res; + + if (!(status & (1U << 11))) + res = 0x02; // not available + else if (status & (1U << 12)) + res = 0x01; // active high + else + res = 0x00; // active low + + return sprintf(buf, "%u\n", res); +} + +static ssize_t read_vsync_status(struct device *dev, struct device_attribute *attr, + char *buf) +{ + struct video_device *vdev = to_video_device(dev); + struct mgb4_vin_dev *vindev = video_get_drvdata(vdev); + u32 status = mgb4_read_reg(&vindev->mgbdev->video, vindev->config->regs.status); + u32 res; + + if (!(status & (1U << 11))) + res = 0x02; // not available + else if (status & (1U << 13)) + res = 0x01; // active high + else + res = 0x00; // active low + + return sprintf(buf, "%u\n", res); +} + +static ssize_t read_hsync_gap(struct device *dev, struct device_attribute *attr, + char *buf) +{ + struct video_device *vdev = to_video_device(dev); + struct mgb4_vin_dev *vindev = video_get_drvdata(vdev); + u32 sync = mgb4_read_reg(&vindev->mgbdev->video, vindev->config->regs.sync); + + return sprintf(buf, "%u\n", sync >> 16); +} + +static ssize_t write_hsync_gap(struct device *dev, + struct device_attribute *attr, const char *buf, + size_t count) +{ + struct video_device *vdev = to_video_device(dev); + struct mgb4_vin_dev *vindev = video_get_drvdata(vdev); + unsigned long val; + int ret; + + ret = kstrtoul(buf, 10, &val); + if (ret) + return ret; + if (val > 0xFFFF) + return -EINVAL; + + mgb4_mask_reg(&vindev->mgbdev->video, vindev->config->regs.sync, + 0xFFFF0000, val << 16); + + return count; +} + +static ssize_t read_vsync_gap(struct device *dev, struct device_attribute *attr, + char *buf) +{ + struct video_device *vdev = to_video_device(dev); + struct mgb4_vin_dev *vindev = video_get_drvdata(vdev); + u32 sync = mgb4_read_reg(&vindev->mgbdev->video, vindev->config->regs.sync); + + return sprintf(buf, "%u\n", sync & 0xFFFF); +} + +static ssize_t write_vsync_gap(struct device *dev, + struct device_attribute *attr, const char *buf, + size_t count) +{ + struct video_device *vdev = to_video_device(dev); + struct mgb4_vin_dev *vindev = video_get_drvdata(vdev); + unsigned long val; + int ret; + + ret = kstrtoul(buf, 10, &val); + if (ret) + return ret; + if (val > 0xFFFF) + return -EINVAL; + + mgb4_mask_reg(&vindev->mgbdev->video, vindev->config->regs.sync, 0xFFFF, val); + + return count; +} + +static ssize_t read_pclk_frequency(struct device *dev, + struct device_attribute *attr, char *buf) +{ + struct video_device *vdev = to_video_device(dev); + struct mgb4_vin_dev *vindev = video_get_drvdata(vdev); + u32 freq = mgb4_read_reg(&vindev->mgbdev->video, vindev->config->regs.pclk); + + return sprintf(buf, "%u\n", freq); +} + +static ssize_t read_hsync_width(struct device *dev, + struct device_attribute *attr, char *buf) +{ + struct video_device *vdev = to_video_device(dev); + struct mgb4_vin_dev *vindev = video_get_drvdata(vdev); + u32 sig = mgb4_read_reg(&vindev->mgbdev->video, vindev->config->regs.signal); + + return sprintf(buf, "%u\n", (sig & 0x00FF0000) >> 16); +} + +static ssize_t read_vsync_width(struct device *dev, + struct device_attribute *attr, char *buf) +{ + struct video_device *vdev = to_video_device(dev); + struct mgb4_vin_dev *vindev = video_get_drvdata(vdev); + u32 sig = mgb4_read_reg(&vindev->mgbdev->video, vindev->config->regs.signal2); + + return sprintf(buf, "%u\n", (sig & 0x00FF0000) >> 16); +} + +static ssize_t read_hback_porch(struct device *dev, + struct device_attribute *attr, char *buf) +{ + struct video_device *vdev = to_video_device(dev); + struct mgb4_vin_dev *vindev = video_get_drvdata(vdev); + u32 sig = mgb4_read_reg(&vindev->mgbdev->video, vindev->config->regs.signal); + + return sprintf(buf, "%u\n", (sig & 0x0000FF00) >> 8); +} + +static ssize_t read_hfront_porch(struct device *dev, + struct device_attribute *attr, char *buf) +{ + struct video_device *vdev = to_video_device(dev); + struct mgb4_vin_dev *vindev = video_get_drvdata(vdev); + u32 sig = mgb4_read_reg(&vindev->mgbdev->video, vindev->config->regs.signal); + + return sprintf(buf, "%u\n", (sig & 0x000000FF)); +} + +static ssize_t read_vback_porch(struct device *dev, + struct device_attribute *attr, char *buf) +{ + struct video_device *vdev = to_video_device(dev); + struct mgb4_vin_dev *vindev = video_get_drvdata(vdev); + u32 sig = mgb4_read_reg(&vindev->mgbdev->video, vindev->config->regs.signal2); + + return sprintf(buf, "%u\n", (sig & 0x0000FF00) >> 8); +} + +static ssize_t read_vfront_porch(struct device *dev, + struct device_attribute *attr, char *buf) +{ + struct video_device *vdev = to_video_device(dev); + struct mgb4_vin_dev *vindev = video_get_drvdata(vdev); + u32 sig = mgb4_read_reg(&vindev->mgbdev->video, vindev->config->regs.signal2); + + return sprintf(buf, "%u\n", (sig & 0x000000FF)); +} + +static ssize_t read_frequency_range(struct device *dev, + struct device_attribute *attr, char *buf) +{ + struct video_device *vdev = to_video_device(dev); + struct mgb4_vin_dev *vindev = video_get_drvdata(vdev); + + return sprintf(buf, "%d\n", vindev->freq_range); +} + +static ssize_t write_frequency_range(struct device *dev, + struct device_attribute *attr, + const char *buf, size_t count) +{ + struct video_device *vdev = to_video_device(dev); + struct mgb4_vin_dev *vindev = video_get_drvdata(vdev); + unsigned long val, flags; + int ret; + + ret = kstrtoul(buf, 10, &val); + if (ret) + return ret; + if (val > 1) + return -EINVAL; + + spin_lock_irqsave(&vindev->vdev.fh_lock, flags); + if (!list_empty(&vindev->vdev.fh_list)) { + spin_unlock_irqrestore(&vindev->vdev.fh_lock, flags); + return -EBUSY; + } + + mgb4_cmt_set_vin(vindev, val); + vindev->freq_range = val; + + spin_unlock_irqrestore(&vindev->vdev.fh_lock, flags); + + return count; +} + +static ssize_t read_alignment(struct device *dev, + struct device_attribute *attr, char *buf) +{ + struct video_device *vdev = to_video_device(dev); + struct mgb4_vin_dev *vindev = video_get_drvdata(vdev); + + return sprintf(buf, "%d\n", vindev->alignment); +} + +static ssize_t write_alignment(struct device *dev, + struct device_attribute *attr, const char *buf, + size_t count) +{ + struct video_device *vdev = to_video_device(dev); + struct mgb4_vin_dev *vindev = video_get_drvdata(vdev); + unsigned long val, flags; + int ret; + + ret = kstrtoul(buf, 10, &val); + if (ret) + return ret; + if (!val || (val & (val - 1))) + return -EINVAL; + + spin_lock_irqsave(&vindev->vdev.fh_lock, flags); + if (!list_empty(&vindev->vdev.fh_list)) { + spin_unlock_irqrestore(&vindev->vdev.fh_lock, flags); + return -EBUSY; + } + + vindev->alignment = val; + + spin_unlock_irqrestore(&vindev->vdev.fh_lock, flags); + + return count; +} + +/* FPDL3 only */ + +static ssize_t read_fpdl3_input_width(struct device *dev, + struct device_attribute *attr, char *buf) +{ + struct video_device *vdev = to_video_device(dev); + struct mgb4_vin_dev *vindev = video_get_drvdata(vdev); + s32 ret; + + mutex_lock(&vindev->mgbdev->i2c_lock); + ret = mgb4_i2c_read_byte(&vindev->deser, 0x34); + mutex_unlock(&vindev->mgbdev->i2c_lock); + if (ret < 0) + return -EIO; + + switch ((u8)ret & 0x18) { + case 0: + return sprintf(buf, "0\n"); + case 0x10: + return sprintf(buf, "1\n"); + case 0x08: + return sprintf(buf, "2\n"); + default: + return -EINVAL; + } +} + +static ssize_t write_fpdl3_input_width(struct device *dev, + struct device_attribute *attr, + const char *buf, size_t count) +{ + struct video_device *vdev = to_video_device(dev); + struct mgb4_vin_dev *vindev = video_get_drvdata(vdev); + u8 i2c_data; + unsigned long val; + int ret; + + ret = kstrtoul(buf, 10, &val); + if (ret) + return ret; + + switch (val) { + case 0: /* auto */ + i2c_data = 0x00; + break; + case 1: /* single */ + i2c_data = 0x10; + break; + case 2: /* dual */ + i2c_data = 0x08; + break; + default: + return -EINVAL; + } + + mutex_lock(&vindev->mgbdev->i2c_lock); + ret = mgb4_i2c_mask_byte(&vindev->deser, 0x34, 0x18, i2c_data); + mutex_unlock(&vindev->mgbdev->i2c_lock); + if (ret < 0) + return -EIO; + + return count; +} + +/* GMSL only */ + +static ssize_t read_gmsl_mode(struct device *dev, + struct device_attribute *attr, char *buf) +{ + struct video_device *vdev = to_video_device(dev); + struct mgb4_vin_dev *vindev = video_get_drvdata(vdev); + s32 r1, r300, r3; + + mutex_lock(&vindev->mgbdev->i2c_lock); + r1 = mgb4_i2c_read_byte(&vindev->deser, 0x01); + r300 = mgb4_i2c_read_byte(&vindev->deser, 0x300); + r3 = mgb4_i2c_read_byte(&vindev->deser, 0x03); + mutex_unlock(&vindev->mgbdev->i2c_lock); + if (r1 < 0 || r300 < 0 || r3 < 0) + return -EIO; + + if ((r1 & 0x03) == 0x03 && (r300 & 0x0C) == 0x0C && (r3 & 0xC0) == 0xC0) + return sprintf(buf, "0\n"); + else if ((r1 & 0x03) == 0x02 && (r300 & 0x0C) == 0x08 && (r3 & 0xC0) == 0x00) + return sprintf(buf, "1\n"); + else if ((r1 & 0x03) == 0x01 && (r300 & 0x0C) == 0x04 && (r3 & 0xC0) == 0x00) + return sprintf(buf, "2\n"); + else if ((r1 & 0x03) == 0x00 && (r300 & 0x0C) == 0x00 && (r3 & 0xC0) == 0x00) + return sprintf(buf, "3\n"); + else + return -EINVAL; +} + +static ssize_t write_gmsl_mode(struct device *dev, + struct device_attribute *attr, const char *buf, + size_t count) +{ + static const struct mgb4_i2c_kv G12[] = { + {0x01, 0x03, 0x03}, {0x300, 0x0C, 0x0C}, {0x03, 0xC0, 0xC0}}; + static const struct mgb4_i2c_kv G6[] = { + {0x01, 0x03, 0x02}, {0x300, 0x0C, 0x08}, {0x03, 0xC0, 0x00}}; + static const struct mgb4_i2c_kv G3[] = { + {0x01, 0x03, 0x01}, {0x300, 0x0C, 0x04}, {0x03, 0xC0, 0x00}}; + static const struct mgb4_i2c_kv G1[] = { + {0x01, 0x03, 0x00}, {0x300, 0x0C, 0x00}, {0x03, 0xC0, 0x00}}; + static const struct mgb4_i2c_kv reset[] = { + {0x10, 1U << 5, 1U << 5}, {0x300, 1U << 6, 1U << 6}}; + struct video_device *vdev = to_video_device(dev); + struct mgb4_vin_dev *vindev = video_get_drvdata(vdev); + const struct mgb4_i2c_kv *values; + unsigned long val; + int ret; + + ret = kstrtoul(buf, 10, &val); + if (ret) + return ret; + + switch (val) { + case 0: /* 12Gb/s */ + values = G12; + break; + case 1: /* 6Gb/s */ + values = G6; + break; + case 2: /* 3Gb/s */ + values = G3; + break; + case 3: /* 1.5Gb/s */ + values = G1; + break; + default: + return -EINVAL; + } + + mutex_lock(&vindev->mgbdev->i2c_lock); + ret = mgb4_i2c_configure(&vindev->deser, values, 3); + ret |= mgb4_i2c_configure(&vindev->deser, reset, 2); + mutex_unlock(&vindev->mgbdev->i2c_lock); + if (ret < 0) + return -EIO; + + return count; +} + +static ssize_t read_gmsl_stream_id(struct device *dev, + struct device_attribute *attr, char *buf) +{ + struct video_device *vdev = to_video_device(dev); + struct mgb4_vin_dev *vindev = video_get_drvdata(vdev); + s32 ret; + + mutex_lock(&vindev->mgbdev->i2c_lock); + ret = mgb4_i2c_read_byte(&vindev->deser, 0xA0); + mutex_unlock(&vindev->mgbdev->i2c_lock); + if (ret < 0) + return -EIO; + + return sprintf(buf, "%d\n", ret & 0x03); +} + +static ssize_t write_gmsl_stream_id(struct device *dev, + struct device_attribute *attr, + const char *buf, size_t count) +{ + struct video_device *vdev = to_video_device(dev); + struct mgb4_vin_dev *vindev = video_get_drvdata(vdev); + unsigned long val, flags; + int ret; + + ret = kstrtoul(buf, 10, &val); + if (ret) + return ret; + if (val > 3) + return -EINVAL; + + spin_lock_irqsave(&vindev->vdev.fh_lock, flags); + ret = list_empty(&vindev->vdev.fh_list); + spin_unlock_irqrestore(&vindev->vdev.fh_lock, flags); + if (!ret) + return -EBUSY; + + /* Formaly, there is a race condition here as the change should be formaly + * done under the spinlock, but we only want to prevent a resolution change + * where possible. However, resolution changes can happen anyway and the + * driver can handle them (they only break the image, not the system). + * + * So instead of trying to workaround the spinlock - mgb4_i2c_mask_byte() + * does sleep - we simply let the rare race condition happen... + */ + mutex_lock(&vindev->mgbdev->i2c_lock); + ret = mgb4_i2c_mask_byte(&vindev->deser, 0xA0, 0x03, (u8)val); + mutex_unlock(&vindev->mgbdev->i2c_lock); + if (ret < 0) + return -EIO; + + return count; +} + +static ssize_t read_gmsl_fec(struct device *dev, struct device_attribute *attr, + char *buf) +{ + struct video_device *vdev = to_video_device(dev); + struct mgb4_vin_dev *vindev = video_get_drvdata(vdev); + s32 r3e0, r308; + + mutex_lock(&vindev->mgbdev->i2c_lock); + r3e0 = mgb4_i2c_read_byte(&vindev->deser, 0x3E0); + r308 = mgb4_i2c_read_byte(&vindev->deser, 0x308); + mutex_unlock(&vindev->mgbdev->i2c_lock); + if (r3e0 < 0 || r308 < 0) + return -EIO; + + if ((r3e0 & 0x07) == 0x00 && (r308 & 0x01) == 0x00) + return sprintf(buf, "0\n"); + else if ((r3e0 & 0x07) == 0x07 && (r308 & 0x01) == 0x01) + return sprintf(buf, "1\n"); + else + return -EINVAL; +} + +static ssize_t write_gmsl_fec(struct device *dev, struct device_attribute *attr, + const char *buf, size_t count) +{ + struct video_device *vdev = to_video_device(dev); + struct mgb4_vin_dev *vindev = video_get_drvdata(vdev); + static const struct mgb4_i2c_kv enable[] = { + {0x3E0, 0x07, 0x07}, {0x308, 0x01, 0x01}}; + static const struct mgb4_i2c_kv disable[] = { + {0x3E0, 0x07, 0x00}, {0x308, 0x01, 0x00}}; + static const struct mgb4_i2c_kv reset[] = { + {0x10, 1U << 5, 1U << 5}, {0x300, 1U << 6, 1U << 6}}; + const struct mgb4_i2c_kv *values; + unsigned long val; + int ret; + + ret = kstrtoul(buf, 10, &val); + if (ret) + return ret; + + switch (val) { + case 0: /* disabled */ + values = disable; + break; + case 1: /* enabled */ + values = enable; + break; + default: + return -EINVAL; + } + + mutex_lock(&vindev->mgbdev->i2c_lock); + ret = mgb4_i2c_configure(&vindev->deser, values, 2); + ret |= mgb4_i2c_configure(&vindev->deser, reset, 2); + mutex_unlock(&vindev->mgbdev->i2c_lock); + if (ret < 0) + return -EIO; + + return count; +} + +static DEVICE_ATTR(input_id, 0444, read_input_id, NULL); +static DEVICE_ATTR(oldi_lane_width, 0644, read_oldi_lane_width, + write_oldi_lane_width); +static DEVICE_ATTR(color_mapping, 0644, read_color_mapping, + write_color_mapping); +static DEVICE_ATTR(link_status, 0444, read_link_status, NULL); +static DEVICE_ATTR(stream_status, 0444, read_stream_status, NULL); +static DEVICE_ATTR(video_width, 0444, read_video_width, NULL); +static DEVICE_ATTR(video_height, 0444, read_video_height, NULL); +static DEVICE_ATTR(hsync_status, 0444, read_hsync_status, NULL); +static DEVICE_ATTR(vsync_status, 0444, read_vsync_status, NULL); +static DEVICE_ATTR(hsync_gap_length, 0644, read_hsync_gap, write_hsync_gap); +static DEVICE_ATTR(vsync_gap_length, 0644, read_vsync_gap, write_vsync_gap); +static DEVICE_ATTR(pclk_frequency, 0444, read_pclk_frequency, NULL); +static DEVICE_ATTR(hsync_width, 0444, read_hsync_width, NULL); +static DEVICE_ATTR(vsync_width, 0444, read_vsync_width, NULL); +static DEVICE_ATTR(hback_porch, 0444, read_hback_porch, NULL); +static DEVICE_ATTR(hfront_porch, 0444, read_hfront_porch, NULL); +static DEVICE_ATTR(vback_porch, 0444, read_vback_porch, NULL); +static DEVICE_ATTR(vfront_porch, 0444, read_vfront_porch, NULL); +static DEVICE_ATTR(frequency_range, 0644, read_frequency_range, + write_frequency_range); +static DEVICE_ATTR(alignment, 0644, read_alignment, write_alignment); + +static DEVICE_ATTR(fpdl3_input_width, 0644, read_fpdl3_input_width, + write_fpdl3_input_width); + +static DEVICE_ATTR(gmsl_mode, 0644, read_gmsl_mode, write_gmsl_mode); +static DEVICE_ATTR(gmsl_stream_id, 0644, read_gmsl_stream_id, + write_gmsl_stream_id); +static DEVICE_ATTR(gmsl_fec, 0644, read_gmsl_fec, write_gmsl_fec); + +struct device_attribute *mgb4_fpdl3_in_attrs[] = { + &dev_attr_input_id, + &dev_attr_link_status, + &dev_attr_stream_status, + &dev_attr_video_width, + &dev_attr_video_height, + &dev_attr_hsync_status, + &dev_attr_vsync_status, + &dev_attr_oldi_lane_width, + &dev_attr_color_mapping, + &dev_attr_hsync_gap_length, + &dev_attr_vsync_gap_length, + &dev_attr_pclk_frequency, + &dev_attr_hsync_width, + &dev_attr_vsync_width, + &dev_attr_hback_porch, + &dev_attr_hfront_porch, + &dev_attr_vback_porch, + &dev_attr_vfront_porch, + &dev_attr_frequency_range, + &dev_attr_alignment, + &dev_attr_fpdl3_input_width, + NULL +}; + +struct device_attribute *mgb4_gmsl_in_attrs[] = { + &dev_attr_input_id, + &dev_attr_link_status, + &dev_attr_stream_status, + &dev_attr_video_width, + &dev_attr_video_height, + &dev_attr_hsync_status, + &dev_attr_vsync_status, + &dev_attr_oldi_lane_width, + &dev_attr_color_mapping, + &dev_attr_hsync_gap_length, + &dev_attr_vsync_gap_length, + &dev_attr_pclk_frequency, + &dev_attr_hsync_width, + &dev_attr_vsync_width, + &dev_attr_hback_porch, + &dev_attr_hfront_porch, + &dev_attr_vback_porch, + &dev_attr_vfront_porch, + &dev_attr_frequency_range, + &dev_attr_alignment, + &dev_attr_gmsl_mode, + &dev_attr_gmsl_stream_id, + &dev_attr_gmsl_fec, + NULL +}; diff --git a/drivers/media/pci/mgb4/mgb4_sysfs_out.c b/drivers/media/pci/mgb4/mgb4_sysfs_out.c new file mode 100644 index 000000000000..c75599bc6372 --- /dev/null +++ b/drivers/media/pci/mgb4/mgb4_sysfs_out.c @@ -0,0 +1,732 @@ +// SPDX-License-Identifier: GPL-2.0-only +/* + * Copyright (C) 2021-2022 Digiteq Automotive + * author: Martin Tuma + * + * This module handles all the sysfs info/configuration that is related to the + * v4l2 output devices. + */ + +#include +#include "mgb4_core.h" +#include "mgb4_i2c.h" +#include "mgb4_vout.h" +#include "mgb4_vin.h" +#include "mgb4_cmt.h" +#include "mgb4_sysfs.h" + +static int loopin_cnt(struct mgb4_vin_dev *vindev) +{ + struct mgb4_vout_dev *voutdev; + u32 config; + int i, cnt = 0; + + for (i = 0; i < MGB4_VOUT_DEVICES; i++) { + voutdev = vindev->mgbdev->vout[i]; + if (!voutdev) + continue; + + config = mgb4_read_reg(&voutdev->mgbdev->video, + voutdev->config->regs.config); + if ((config & 0xc) >> 2 == vindev->config->id) + cnt++; + } + + return cnt; +} + +/* Common for both FPDL3 and GMSL */ + +static ssize_t read_output_id(struct device *dev, + struct device_attribute *attr, char *buf) +{ + struct video_device *vdev = to_video_device(dev); + struct mgb4_vout_dev *voutdev = video_get_drvdata(vdev); + + return sprintf(buf, "%d\n", voutdev->config->id); +} + +static ssize_t read_video_source(struct device *dev, + struct device_attribute *attr, char *buf) +{ + struct video_device *vdev = to_video_device(dev); + struct mgb4_vout_dev *voutdev = video_get_drvdata(vdev); + u32 config = mgb4_read_reg(&voutdev->mgbdev->video, + voutdev->config->regs.config); + + return sprintf(buf, "%u\n", (config & 0xc) >> 2); +} + +static ssize_t write_video_source(struct device *dev, + struct device_attribute *attr, + const char *buf, size_t count) +{ + struct video_device *vdev = to_video_device(dev); + struct mgb4_vout_dev *voutdev = video_get_drvdata(vdev); + struct mgb4_dev *mgbdev = voutdev->mgbdev; + struct mgb4_vin_dev *loopin_new = 0, *loopin_old = 0; + unsigned long val; + unsigned long flags_in[MGB4_VIN_DEVICES], flags_out[MGB4_VOUT_DEVICES]; + ssize_t ret; + u32 config; + int i; + + memset(flags_in, 0, sizeof(flags_in)); + memset(flags_out, 0, sizeof(flags_out)); + + ret = kstrtoul(buf, 10, &val); + if (ret) + return ret; + if (val > 3) + return -EINVAL; + + for (i = 0; i < MGB4_VIN_DEVICES; i++) + if (mgbdev->vin[i]) + spin_lock_irqsave(&mgbdev->vin[i]->vdev.fh_lock, flags_in[i]); + for (i = 0; i < MGB4_VOUT_DEVICES; i++) + if (mgbdev->vout[i]) + spin_lock_irqsave(&mgbdev->vout[i]->vdev.fh_lock, flags_out[i]); + + ret = -EBUSY; + for (i = 0; i < MGB4_VIN_DEVICES; i++) + if (mgbdev->vin[i] && !list_empty(&mgbdev->vin[i]->vdev.fh_list)) + goto error; + for (i = 0; i < MGB4_VOUT_DEVICES; i++) + if (mgbdev->vout[i] && !list_empty(&mgbdev->vout[i]->vdev.fh_list)) + goto error; + + config = mgb4_read_reg(&mgbdev->video, voutdev->config->regs.config); + + if (((config & 0xc) >> 2) < MGB4_VIN_DEVICES) + loopin_old = mgbdev->vin[(config & 0xc) >> 2]; + if (val < MGB4_VIN_DEVICES) + loopin_new = mgbdev->vin[val]; + if (loopin_old && loopin_cnt(loopin_old) == 1) + mgb4_mask_reg(&mgbdev->video, loopin_old->config->regs.config, 0x2, 0x0); + if (loopin_new) + mgb4_mask_reg(&mgbdev->video, loopin_new->config->regs.config, 0x2, 0x2); + + if (val == voutdev->config->id + MGB4_VIN_DEVICES) + mgb4_write_reg(&mgbdev->video, voutdev->config->regs.config, + config & ~(1 << 1)); + else + mgb4_write_reg(&mgbdev->video, voutdev->config->regs.config, + config | (1U << 1)); + + mgb4_mask_reg(&mgbdev->video, voutdev->config->regs.config, 0xc, val << 2); + + ret = count; + +error: + for (i = MGB4_VOUT_DEVICES - 1; i >= 0; i--) + if (mgbdev->vout[i]) + spin_unlock_irqrestore(&mgbdev->vout[i]->vdev.fh_lock, flags_out[i]); + for (i = MGB4_VIN_DEVICES - 1; i >= 0; i--) + if (mgbdev->vin[i]) + spin_unlock_irqrestore(&mgbdev->vin[i]->vdev.fh_lock, flags_in[i]); + + return ret; +} + +static ssize_t read_display_width(struct device *dev, + struct device_attribute *attr, char *buf) +{ + struct video_device *vdev = to_video_device(dev); + struct mgb4_vout_dev *voutdev = video_get_drvdata(vdev); + u32 config = mgb4_read_reg(&voutdev->mgbdev->video, + voutdev->config->regs.resolution); + + return sprintf(buf, "%u\n", config >> 16); +} + +static ssize_t write_display_width(struct device *dev, + struct device_attribute *attr, + const char *buf, size_t count) +{ + struct video_device *vdev = to_video_device(dev); + struct mgb4_vout_dev *voutdev = video_get_drvdata(vdev); + unsigned long val, flags; + int ret, busy; + + ret = kstrtoul(buf, 10, &val); + if (ret) + return ret; + if (val > 0xFFFF) + return -EINVAL; + + spin_lock_irqsave(&voutdev->vdev.fh_lock, flags); + busy = !list_empty(&voutdev->vdev.fh_list); + if (busy) { + spin_unlock_irqrestore(&voutdev->vdev.fh_lock, flags); + return -EBUSY; + } + + mgb4_mask_reg(&voutdev->mgbdev->video, voutdev->config->regs.resolution, + 0xFFFF0000, val << 16); + + spin_unlock_irqrestore(&voutdev->vdev.fh_lock, flags); + + return count; +} + +static ssize_t read_display_height(struct device *dev, + struct device_attribute *attr, char *buf) +{ + struct video_device *vdev = to_video_device(dev); + struct mgb4_vout_dev *voutdev = video_get_drvdata(vdev); + u32 config = mgb4_read_reg(&voutdev->mgbdev->video, + voutdev->config->regs.resolution); + + return sprintf(buf, "%u\n", config & 0xFFFF); +} + +static ssize_t write_display_height(struct device *dev, + struct device_attribute *attr, + const char *buf, size_t count) +{ + struct video_device *vdev = to_video_device(dev); + struct mgb4_vout_dev *voutdev = video_get_drvdata(vdev); + unsigned long val, flags; + int ret, busy; + + ret = kstrtoul(buf, 10, &val); + if (ret) + return ret; + if (val > 0xFFFF) + return -EINVAL; + + spin_lock_irqsave(&voutdev->vdev.fh_lock, flags); + busy = !list_empty(&voutdev->vdev.fh_list); + if (busy) { + spin_unlock_irqrestore(&voutdev->vdev.fh_lock, flags); + return -EBUSY; + } + + mgb4_mask_reg(&voutdev->mgbdev->video, voutdev->config->regs.resolution, + 0xFFFF, val); + + spin_unlock_irqrestore(&voutdev->vdev.fh_lock, flags); + + return count; +} + +static ssize_t read_frame_rate(struct device *dev, + struct device_attribute *attr, char *buf) +{ + struct video_device *vdev = to_video_device(dev); + struct mgb4_vout_dev *voutdev = video_get_drvdata(vdev); + u32 period = mgb4_read_reg(&voutdev->mgbdev->video, + voutdev->config->regs.frame_period); + + return sprintf(buf, "%u\n", 125000000 / period); +} + +static ssize_t write_frame_rate(struct device *dev, + struct device_attribute *attr, const char *buf, + size_t count) +{ + struct video_device *vdev = to_video_device(dev); + struct mgb4_vout_dev *voutdev = video_get_drvdata(vdev); + unsigned long val; + int ret; + + ret = kstrtoul(buf, 10, &val); + if (ret) + return ret; + + mgb4_write_reg(&voutdev->mgbdev->video, voutdev->config->regs.frame_period, + 125000000 / val); + + return count; +} + +static ssize_t read_hsync_width(struct device *dev, + struct device_attribute *attr, char *buf) +{ + struct video_device *vdev = to_video_device(dev); + struct mgb4_vout_dev *voutdev = video_get_drvdata(vdev); + u32 sig = mgb4_read_reg(&voutdev->mgbdev->video, voutdev->config->regs.hsync); + + return sprintf(buf, "%u\n", (sig & 0x00FF0000) >> 16); +} + +static ssize_t write_hsync_width(struct device *dev, + struct device_attribute *attr, const char *buf, + size_t count) +{ + struct video_device *vdev = to_video_device(dev); + struct mgb4_vout_dev *voutdev = video_get_drvdata(vdev); + unsigned long val; + int ret; + + ret = kstrtoul(buf, 10, &val); + if (ret) + return ret; + if (val > 0xFF) + return -EINVAL; + + mgb4_mask_reg(&voutdev->mgbdev->video, voutdev->config->regs.hsync, + 0x00FF0000, val << 16); + + return count; +} + +static ssize_t read_vsync_width(struct device *dev, + struct device_attribute *attr, char *buf) +{ + struct video_device *vdev = to_video_device(dev); + struct mgb4_vout_dev *voutdev = video_get_drvdata(vdev); + u32 sig = mgb4_read_reg(&voutdev->mgbdev->video, voutdev->config->regs.vsync); + + return sprintf(buf, "%u\n", (sig & 0x00FF0000) >> 16); +} + +static ssize_t write_vsync_width(struct device *dev, + struct device_attribute *attr, const char *buf, + size_t count) +{ + struct video_device *vdev = to_video_device(dev); + struct mgb4_vout_dev *voutdev = video_get_drvdata(vdev); + unsigned long val; + int ret; + + ret = kstrtoul(buf, 10, &val); + if (ret) + return ret; + if (val > 0xFF) + return -EINVAL; + + mgb4_mask_reg(&voutdev->mgbdev->video, voutdev->config->regs.vsync, + 0x00FF0000, val << 16); + + return count; +} + +static ssize_t read_hback_porch(struct device *dev, + struct device_attribute *attr, char *buf) +{ + struct video_device *vdev = to_video_device(dev); + struct mgb4_vout_dev *voutdev = video_get_drvdata(vdev); + u32 sig = mgb4_read_reg(&voutdev->mgbdev->video, voutdev->config->regs.hsync); + + return sprintf(buf, "%u\n", (sig & 0x0000FF00) >> 8); +} + +static ssize_t write_hback_porch(struct device *dev, + struct device_attribute *attr, const char *buf, + size_t count) +{ + struct video_device *vdev = to_video_device(dev); + struct mgb4_vout_dev *voutdev = video_get_drvdata(vdev); + unsigned long val; + int ret; + + ret = kstrtoul(buf, 10, &val); + if (ret) + return ret; + if (val > 0xFF) + return -EINVAL; + + mgb4_mask_reg(&voutdev->mgbdev->video, voutdev->config->regs.hsync, + 0x0000FF00, val << 8); + + return count; +} + +static ssize_t read_vback_porch(struct device *dev, + struct device_attribute *attr, char *buf) +{ + struct video_device *vdev = to_video_device(dev); + struct mgb4_vout_dev *voutdev = video_get_drvdata(vdev); + u32 sig = mgb4_read_reg(&voutdev->mgbdev->video, voutdev->config->regs.vsync); + + return sprintf(buf, "%u\n", (sig & 0x0000FF00) >> 8); +} + +static ssize_t write_vback_porch(struct device *dev, + struct device_attribute *attr, const char *buf, + size_t count) +{ + struct video_device *vdev = to_video_device(dev); + struct mgb4_vout_dev *voutdev = video_get_drvdata(vdev); + unsigned long val; + int ret; + + ret = kstrtoul(buf, 10, &val); + if (ret) + return ret; + if (val > 0xFF) + return -EINVAL; + + mgb4_mask_reg(&voutdev->mgbdev->video, voutdev->config->regs.vsync, + 0x0000FF00, val << 8); + + return count; +} + +static ssize_t read_hfront_porch(struct device *dev, + struct device_attribute *attr, char *buf) +{ + struct video_device *vdev = to_video_device(dev); + struct mgb4_vout_dev *voutdev = video_get_drvdata(vdev); + u32 sig = mgb4_read_reg(&voutdev->mgbdev->video, voutdev->config->regs.hsync); + + return sprintf(buf, "%u\n", (sig & 0x000000FF)); +} + +static ssize_t write_hfront_porch(struct device *dev, + struct device_attribute *attr, + const char *buf, size_t count) +{ + struct video_device *vdev = to_video_device(dev); + struct mgb4_vout_dev *voutdev = video_get_drvdata(vdev); + unsigned long val; + int ret; + + ret = kstrtoul(buf, 10, &val); + if (ret) + return ret; + if (val > 0xFF) + return -EINVAL; + + mgb4_mask_reg(&voutdev->mgbdev->video, voutdev->config->regs.hsync, + 0x000000FF, val); + + return count; +} + +static ssize_t read_vfront_porch(struct device *dev, + struct device_attribute *attr, char *buf) +{ + struct video_device *vdev = to_video_device(dev); + struct mgb4_vout_dev *voutdev = video_get_drvdata(vdev); + u32 sig = mgb4_read_reg(&voutdev->mgbdev->video, voutdev->config->regs.vsync); + + return sprintf(buf, "%u\n", (sig & 0x000000FF)); +} + +static ssize_t write_vfront_porch(struct device *dev, + struct device_attribute *attr, const char *buf, + size_t count) +{ + struct video_device *vdev = to_video_device(dev); + struct mgb4_vout_dev *voutdev = video_get_drvdata(vdev); + unsigned long val; + int ret; + + ret = kstrtoul(buf, 10, &val); + if (ret) + return ret; + if (val > 0xFF) + return -EINVAL; + + mgb4_mask_reg(&voutdev->mgbdev->video, voutdev->config->regs.vsync, + 0x000000FF, val); + + return count; +} + +static ssize_t read_alignment(struct device *dev, + struct device_attribute *attr, char *buf) +{ + struct video_device *vdev = to_video_device(dev); + struct mgb4_vout_dev *voutdev = video_get_drvdata(vdev); + + return sprintf(buf, "%d\n", voutdev->alignment); +} + +static ssize_t write_alignment(struct device *dev, struct device_attribute *attr, + const char *buf, size_t count) +{ + struct video_device *vdev = to_video_device(dev); + struct mgb4_vout_dev *voutdev = video_get_drvdata(vdev); + unsigned long val, flags; + u32 config; + int ret; + + ret = kstrtoul(buf, 10, &val); + if (ret) + return ret; + if (!val || (val & (val - 1))) + return -EINVAL; + + spin_lock_irqsave(&voutdev->vdev.fh_lock, flags); + if (!list_empty(&voutdev->vdev.fh_list)) { + spin_unlock_irqrestore(&voutdev->vdev.fh_lock, flags); + return -EBUSY; + } + /* Do not allow the change if loopback is active */ + config = mgb4_read_reg(&voutdev->mgbdev->video, voutdev->config->regs.config); + if (((config & 0xc) >> 2) < 2) { + spin_unlock_irqrestore(&voutdev->vdev.fh_lock, flags); + return -EPERM; + } + + voutdev->alignment = val; + + spin_unlock_irqrestore(&voutdev->vdev.fh_lock, flags); + + return count; +} + +/* FPDL3 only */ + +static ssize_t read_hsync_polarity(struct device *dev, + struct device_attribute *attr, char *buf) +{ + struct video_device *vdev = to_video_device(dev); + struct mgb4_vout_dev *voutdev = video_get_drvdata(vdev); + u32 config = mgb4_read_reg(&voutdev->mgbdev->video, + voutdev->config->regs.hsync); + + return sprintf(buf, "%u\n", (config & (1U << 31)) >> 31); +} + +static ssize_t write_hsync_polarity(struct device *dev, + struct device_attribute *attr, + const char *buf, size_t count) +{ + struct video_device *vdev = to_video_device(dev); + struct mgb4_vout_dev *voutdev = video_get_drvdata(vdev); + unsigned long val; + int ret; + + ret = kstrtoul(buf, 10, &val); + if (ret) + return ret; + if (val > 1) + return -EINVAL; + + mgb4_mask_reg(&voutdev->mgbdev->video, voutdev->config->regs.hsync, + (1U << 31), val << 31); + + return count; +} + +static ssize_t read_vsync_polarity(struct device *dev, + struct device_attribute *attr, char *buf) +{ + struct video_device *vdev = to_video_device(dev); + struct mgb4_vout_dev *voutdev = video_get_drvdata(vdev); + u32 config = mgb4_read_reg(&voutdev->mgbdev->video, + voutdev->config->regs.vsync); + + return sprintf(buf, "%u\n", (config & (1U << 31)) >> 31); +} + +static ssize_t write_vsync_polarity(struct device *dev, + struct device_attribute *attr, + const char *buf, size_t count) +{ + struct video_device *vdev = to_video_device(dev); + struct mgb4_vout_dev *voutdev = video_get_drvdata(vdev); + unsigned long val; + int ret; + + ret = kstrtoul(buf, 10, &val); + if (ret) + return ret; + if (val > 1) + return -EINVAL; + + mgb4_mask_reg(&voutdev->mgbdev->video, voutdev->config->regs.vsync, + (1U << 31), val << 31); + + return count; +} + +static ssize_t read_de_polarity(struct device *dev, + struct device_attribute *attr, char *buf) +{ + struct video_device *vdev = to_video_device(dev); + struct mgb4_vout_dev *voutdev = video_get_drvdata(vdev); + u32 config = mgb4_read_reg(&voutdev->mgbdev->video, + voutdev->config->regs.vsync); + + return sprintf(buf, "%u\n", (config & (1U << 30)) >> 30); +} + +static ssize_t write_de_polarity(struct device *dev, + struct device_attribute *attr, const char *buf, + size_t count) +{ + struct video_device *vdev = to_video_device(dev); + struct mgb4_vout_dev *voutdev = video_get_drvdata(vdev); + unsigned long val; + int ret; + + ret = kstrtoul(buf, 10, &val); + if (ret) + return ret; + if (val > 1) + return -EINVAL; + + mgb4_mask_reg(&voutdev->mgbdev->video, voutdev->config->regs.vsync, + (1U << 30), val << 30); + + return count; +} + +static ssize_t read_fpdl3_output_width(struct device *dev, + struct device_attribute *attr, char *buf) +{ + struct video_device *vdev = to_video_device(dev); + struct mgb4_vout_dev *voutdev = video_get_drvdata(vdev); + s32 ret; + + mutex_lock(&voutdev->mgbdev->i2c_lock); + ret = mgb4_i2c_read_byte(&voutdev->ser, 0x5B); + mutex_unlock(&voutdev->mgbdev->i2c_lock); + if (ret < 0) + return -EIO; + + switch ((u8)ret & 0x03) { + case 0: + return sprintf(buf, "0\n"); + case 1: + return sprintf(buf, "1\n"); + case 3: + return sprintf(buf, "2\n"); + default: + return -EINVAL; + } +} + +static ssize_t write_fpdl3_output_width(struct device *dev, + struct device_attribute *attr, + const char *buf, size_t count) +{ + struct video_device *vdev = to_video_device(dev); + struct mgb4_vout_dev *voutdev = video_get_drvdata(vdev); + u8 i2c_data; + unsigned long val; + int ret; + + ret = kstrtoul(buf, 10, &val); + if (ret) + return ret; + + switch (val) { + case 0: /* auto */ + i2c_data = 0x00; + break; + case 1: /* single */ + i2c_data = 0x01; + break; + case 2: /* dual */ + i2c_data = 0x03; + break; + default: + return -EINVAL; + } + + mutex_lock(&voutdev->mgbdev->i2c_lock); + ret = mgb4_i2c_mask_byte(&voutdev->ser, 0x5B, 0x03, i2c_data); + mutex_unlock(&voutdev->mgbdev->i2c_lock); + if (ret < 0) + return -EIO; + + return count; +} + +static ssize_t read_pclk_frequency(struct device *dev, + struct device_attribute *attr, char *buf) +{ + struct video_device *vdev = to_video_device(dev); + struct mgb4_vout_dev *voutdev = video_get_drvdata(vdev); + + return sprintf(buf, "%u\n", voutdev->freq); +} + +static ssize_t write_pclk_frequency(struct device *dev, + struct device_attribute *attr, + const char *buf, size_t count) +{ + struct video_device *vdev = to_video_device(dev); + struct mgb4_vout_dev *voutdev = video_get_drvdata(vdev); + unsigned long val, flags; + int ret, busy; + unsigned int dp; + + ret = kstrtoul(buf, 10, &val); + if (ret) + return ret; + + spin_lock_irqsave(&voutdev->vdev.fh_lock, flags); + busy = !list_empty(&voutdev->vdev.fh_list); + if (busy) { + spin_unlock_irqrestore(&voutdev->vdev.fh_lock, flags); + return -EBUSY; + } + + dp = (val > 50000) ? 1 : 0; + voutdev->freq = mgb4_cmt_set_vout(voutdev, val >> dp) << dp; + + spin_unlock_irqrestore(&voutdev->vdev.fh_lock, flags); + + mgb4_mask_reg(&voutdev->mgbdev->video, voutdev->config->regs.config, + 0x10, dp << 4); + mutex_lock(&voutdev->mgbdev->i2c_lock); + ret = mgb4_i2c_mask_byte(&voutdev->ser, 0x4F, 1 << 6, ((~dp) & 1) << 6); + mutex_unlock(&voutdev->mgbdev->i2c_lock); + if (ret < 0) + return -EIO; + + return count; +} + +static DEVICE_ATTR(output_id, 0444, read_output_id, NULL); +static DEVICE_ATTR(video_source, 0644, read_video_source, write_video_source); +static DEVICE_ATTR(display_width, 0644, read_display_width, + write_display_width); +static DEVICE_ATTR(display_height, 0644, read_display_height, + write_display_height); +static DEVICE_ATTR(frame_rate, 0644, read_frame_rate, write_frame_rate); +static DEVICE_ATTR(hsync_polarity, 0644, read_hsync_polarity, + write_hsync_polarity); +static DEVICE_ATTR(vsync_polarity, 0644, read_vsync_polarity, + write_vsync_polarity); +static DEVICE_ATTR(de_polarity, 0644, read_de_polarity, + write_de_polarity); +static DEVICE_ATTR(pclk_frequency, 0644, read_pclk_frequency, + write_pclk_frequency); +static DEVICE_ATTR(hsync_width, 0644, read_hsync_width, write_hsync_width); +static DEVICE_ATTR(vsync_width, 0644, read_vsync_width, write_vsync_width); +static DEVICE_ATTR(hback_porch, 0644, read_hback_porch, write_hback_porch); +static DEVICE_ATTR(hfront_porch, 0644, read_hfront_porch, write_hfront_porch); +static DEVICE_ATTR(vback_porch, 0644, read_vback_porch, write_vback_porch); +static DEVICE_ATTR(vfront_porch, 0644, read_vfront_porch, write_vfront_porch); +static DEVICE_ATTR(alignment, 0644, read_alignment, write_alignment); + +static DEVICE_ATTR(fpdl3_output_width, 0644, read_fpdl3_output_width, + write_fpdl3_output_width); + +struct device_attribute *mgb4_fpdl3_out_attrs[] = { + &dev_attr_output_id, + &dev_attr_video_source, + &dev_attr_display_width, + &dev_attr_display_height, + &dev_attr_frame_rate, + &dev_attr_hsync_polarity, + &dev_attr_vsync_polarity, + &dev_attr_de_polarity, + &dev_attr_pclk_frequency, + &dev_attr_hsync_width, + &dev_attr_vsync_width, + &dev_attr_hback_porch, + &dev_attr_hfront_porch, + &dev_attr_vback_porch, + &dev_attr_vfront_porch, + &dev_attr_alignment, + &dev_attr_fpdl3_output_width, + NULL +}; + +struct device_attribute *mgb4_gmsl_out_attrs[] = { + &dev_attr_output_id, + &dev_attr_video_source, + &dev_attr_display_width, + &dev_attr_display_height, + &dev_attr_frame_rate, + NULL +}; diff --git a/drivers/media/pci/mgb4/mgb4_sysfs_pci.c b/drivers/media/pci/mgb4/mgb4_sysfs_pci.c new file mode 100644 index 000000000000..6f729af488dd --- /dev/null +++ b/drivers/media/pci/mgb4/mgb4_sysfs_pci.c @@ -0,0 +1,86 @@ +// SPDX-License-Identifier: GPL-2.0-only +/* + * Copyright (C) 2021-2022 Digiteq Automotive + * author: Martin Tuma + * + * This module handles all the sysfs info/configuration that is related to the + * PCI card device. + */ + +#include +#include "mgb4_core.h" +#include "mgb4_sysfs.h" + +static ssize_t read_module_version(struct device *dev, + struct device_attribute *attr, char *buf) +{ + struct mgb4_dev *mgbdev = dev_get_drvdata(dev); + + return sprintf(buf, "%u\n", mgbdev->module_version & 0x0F); +} + +static ssize_t read_module_type(struct device *dev, + struct device_attribute *attr, char *buf) +{ + struct mgb4_dev *mgbdev = dev_get_drvdata(dev); + + return sprintf(buf, "%u\n", mgbdev->module_version >> 4); +} + +static ssize_t read_fw_version(struct device *dev, + struct device_attribute *attr, char *buf) +{ + struct mgb4_dev *mgbdev = dev_get_drvdata(dev); + u32 config = mgb4_read_reg(&mgbdev->video, 0xC4); + + return sprintf(buf, "%u\n", config & 0xFFFF); +} + +static ssize_t read_fw_type(struct device *dev, + struct device_attribute *attr, char *buf) +{ + struct mgb4_dev *mgbdev = dev_get_drvdata(dev); + u32 config = mgb4_read_reg(&mgbdev->video, 0xC4); + + return sprintf(buf, "%u\n", config >> 24); +} + +static ssize_t read_serial_number(struct device *dev, + struct device_attribute *attr, char *buf) +{ + struct mgb4_dev *mgbdev = dev_get_drvdata(dev); + u32 sn = mgbdev->serial_number; + + return sprintf(buf, "%03d-%03d-%03d-%03d\n", sn >> 24, (sn >> 16) & 0xFF, + (sn >> 8) & 0xFF, sn & 0xFF); +} + +static ssize_t read_temperature(struct device *dev, + struct device_attribute *attr, char *buf) +{ + struct mgb4_dev *mgbdev = dev_get_drvdata(dev); + u32 val10, val; + + val = mgb4_read_reg(&mgbdev->video, 0xD0); + val10 = ((((val >> 20) & 0xFFF) * 503975) - 1118822400) / 409600; + + return sprintf(buf, "%u\n", ((val10 % 10) > 4) + ? (val10 / 10) + 1 : val10 / 10); +} + +static DEVICE_ATTR(module_version, 0444, read_module_version, NULL); +static DEVICE_ATTR(module_type, 0444, read_module_type, NULL); +static DEVICE_ATTR(fw_version, 0444, read_fw_version, NULL); +static DEVICE_ATTR(fw_type, 0444, read_fw_type, NULL); +static DEVICE_ATTR(serial_number, 0444, read_serial_number, NULL); +static DEVICE_ATTR(temperature, 0444, read_temperature, NULL); + +struct device_attribute *mgb4_pci_attrs[] = { + &dev_attr_module_type, + &dev_attr_module_version, + &dev_attr_fw_type, + &dev_attr_fw_version, + &dev_attr_serial_number, + &dev_attr_temperature, + NULL +}; diff --git a/drivers/media/pci/mgb4/mgb4_trigger.c b/drivers/media/pci/mgb4/mgb4_trigger.c new file mode 100644 index 000000000000..964daf177fb1 --- /dev/null +++ b/drivers/media/pci/mgb4/mgb4_trigger.c @@ -0,0 +1,208 @@ +// SPDX-License-Identifier: GPL-2.0-only +/* + * Copyright (C) 2021-2022 Digiteq Automotive + * author: Martin Tuma + * + * This module handles the IIO trigger device. The card has two signal inputs + * for event triggers that can be used to record events related to the video + * stream. A standard linux IIO device with triggered buffer capability is + * created and configured that can be used to fetch the events with the same + * clock source as the video frames. + */ + +#include +#include +#include +#include +#include +#include +#include +#include "mgb4_core.h" +#include "mgb4_trigger.h" + +struct trigger_data { + struct mgb4_dev *mgbdev; + struct iio_trigger *trig; +}; + +static int trigger_read_raw(struct iio_dev *indio_dev, + struct iio_chan_spec const *chan, int *val, + int *val2, long mask) +{ + struct trigger_data *st = iio_priv(indio_dev); + + switch (mask) { + case IIO_CHAN_INFO_RAW: + if (iio_buffer_enabled(indio_dev)) + return -EBUSY; + *val = mgb4_read_reg(&st->mgbdev->video, 0xA0); + + return IIO_VAL_INT; + } + + return -EINVAL; +} + +static int trigger_set_state(struct iio_trigger *trig, bool state) +{ + struct iio_dev *indio_dev = iio_trigger_get_drvdata(trig); + struct trigger_data *st = iio_priv(indio_dev); + int irq = xdma_get_user_irq(st->mgbdev->xdev, 11); + + if (state) + xdma_enable_user_irq(st->mgbdev->xdev, irq); + else + xdma_disable_user_irq(st->mgbdev->xdev, irq); + + return 0; +} + +static const struct iio_trigger_ops trigger_ops = { + .set_trigger_state = &trigger_set_state, +}; + +static const struct iio_info trigger_info = { + .read_raw = trigger_read_raw, +}; + +#define TRIGGER_CHANNEL(_si) { \ + .type = IIO_ACTIVITY, \ + .info_mask_separate = BIT(IIO_CHAN_INFO_RAW), \ + .scan_index = _si, \ + .scan_type = { \ + .sign = 'u', \ + .realbits = 32, \ + .storagebits = 32, \ + .shift = 0, \ + .endianness = IIO_CPU \ + }, \ +} + +static const struct iio_chan_spec trigger_channels[] = { + TRIGGER_CHANNEL(0), + IIO_CHAN_SOFT_TIMESTAMP(1), +}; + +static irqreturn_t trigger_handler(int irq, void *p) +{ + struct iio_poll_func *pf = p; + struct iio_dev *indio_dev = pf->indio_dev; + struct trigger_data *st = iio_priv(indio_dev); + struct { + u32 data; + s64 ts __aligned(8); + } scan; + + scan.data = mgb4_read_reg(&st->mgbdev->video, 0xA0); + mgb4_write_reg(&st->mgbdev->video, 0xA0, scan.data); + + iio_push_to_buffers_with_timestamp(indio_dev, &scan, pf->timestamp); + iio_trigger_notify_done(indio_dev->trig); + + mgb4_write_reg(&st->mgbdev->video, 0xB4, 1U << 11); + + return IRQ_HANDLED; +} + +static int probe_trigger(struct iio_dev *indio_dev, int irq) +{ + int ret; + struct trigger_data *st = iio_priv(indio_dev); + + st->trig = iio_trigger_alloc(&st->mgbdev->pdev->dev, "%s-dev%d", + indio_dev->name, iio_device_id(indio_dev)); + if (!st->trig) + return -ENOMEM; + + ret = request_irq(irq, &iio_trigger_generic_data_rdy_poll, 0, + "mgb4-trigger", st->trig); + if (ret) + goto error_free_trig; + + st->trig->ops = &trigger_ops; + iio_trigger_set_drvdata(st->trig, indio_dev); + ret = iio_trigger_register(st->trig); + if (ret) + goto error_free_irq; + + indio_dev->trig = iio_trigger_get(st->trig); + + return 0; + +error_free_irq: + free_irq(irq, st->trig); +error_free_trig: + iio_trigger_free(st->trig); + + return ret; +} + +static void remove_trigger(struct iio_dev *indio_dev, int irq) +{ + struct trigger_data *st = iio_priv(indio_dev); + + iio_trigger_unregister(st->trig); + free_irq(irq, st->trig); + iio_trigger_free(st->trig); +} + +struct iio_dev *mgb4_trigger_create(struct mgb4_dev *mgbdev) +{ + struct iio_dev *indio_dev; + struct trigger_data *data; + struct pci_dev *pdev = mgbdev->pdev; + struct device *dev = &pdev->dev; + int rv, irq; + + indio_dev = iio_device_alloc(dev, sizeof(*data)); + if (!indio_dev) + return NULL; + + indio_dev->info = &trigger_info; + indio_dev->name = "mgb4"; + indio_dev->modes = INDIO_DIRECT_MODE; + indio_dev->channels = trigger_channels; + indio_dev->num_channels = ARRAY_SIZE(trigger_channels); + + data = iio_priv(indio_dev); + data->mgbdev = mgbdev; + + irq = xdma_get_user_irq(mgbdev->xdev, 11); + rv = probe_trigger(indio_dev, irq); + if (rv < 0) { + dev_err(dev, "iio triggered setup failed\n"); + goto error_alloc; + } + rv = iio_triggered_buffer_setup(indio_dev, &iio_pollfunc_store_time, + trigger_handler, NULL); + if (rv < 0) { + dev_err(dev, "iio triggered buffer setup failed\n"); + goto error_trigger; + } + rv = iio_device_register(indio_dev); + if (rv < 0) { + dev_err(dev, "iio device register failed\n"); + goto error_buffer; + } + + return indio_dev; + +error_buffer: + iio_triggered_buffer_cleanup(indio_dev); +error_trigger: + remove_trigger(indio_dev, irq); +error_alloc: + iio_device_free(indio_dev); + + return NULL; +} + +void mgb4_trigger_free(struct iio_dev *indio_dev) +{ + struct trigger_data *st = iio_priv(indio_dev); + + iio_device_unregister(indio_dev); + iio_triggered_buffer_cleanup(indio_dev); + remove_trigger(indio_dev, xdma_get_user_irq(st->mgbdev->xdev, 11)); + iio_device_free(indio_dev); +} diff --git a/drivers/media/pci/mgb4/mgb4_trigger.h b/drivers/media/pci/mgb4/mgb4_trigger.h new file mode 100644 index 000000000000..6c25bc4576f6 --- /dev/null +++ b/drivers/media/pci/mgb4/mgb4_trigger.h @@ -0,0 +1,8 @@ +/* SPDX-License-Identifier: GPL-2.0-only */ +/* + * Copyright (C) 2021-2022 Digiteq Automotive + * author: Martin Tuma + */ + +struct iio_dev *mgb4_trigger_create(struct mgb4_dev *mgbdev); +void mgb4_trigger_free(struct iio_dev *indio_dev); diff --git a/drivers/media/pci/mgb4/mgb4_vin.c b/drivers/media/pci/mgb4/mgb4_vin.c new file mode 100644 index 000000000000..2e3790ae5124 --- /dev/null +++ b/drivers/media/pci/mgb4/mgb4_vin.c @@ -0,0 +1,830 @@ +// SPDX-License-Identifier: GPL-2.0-only +/* + * Copyright (C) 2021-2022 Digiteq Automotive + * author: Martin Tuma + * + * This is the v4l2 input device module. It initializes the signal deserializers + * and creates the v4l2 video devices. The input signal can change at any time + * which is handled by the "timings" callbacks and an IRQ based watcher, that + * emits the V4L2_EVENT_SOURCE_CHANGE event in case of a signal source change. + * + * When the device is in loopback mode (a direct, in HW, in->out frame passing + * mode) the cards's frame queue must be running regardles whether a v4l2 stream + * is running and the output parameters like frame buffers padding must be in + * sync with the input parameters. + */ + +#include +#include +#include +#include +#include +#include +#include +#include +#include "mgb4_core.h" +#include "mgb4_dma.h" +#include "mgb4_sysfs.h" +#include "mgb4_io.h" +#include "mgb4_vout.h" +#include "mgb4_vin.h" + +static const struct mgb4_vin_config vin_cfg[] = { + {0, 0, 0, 6, {0x10, 0x00, 0x04, 0x08, 0x1C, 0x14, 0x18, 0x20, 0x24, 0x28}}, + {1, 1, 1, 7, {0x40, 0x30, 0x34, 0x38, 0x4C, 0x44, 0x48, 0x50, 0x54, 0x58}} +}; + +static const struct i2c_board_info fpdl3_deser_info[] = { + {I2C_BOARD_INFO("deserializer1", 0x36)}, + {I2C_BOARD_INFO("deserializer2", 0x38)}, +}; + +static const struct i2c_board_info gmsl_deser_info[] = { + {I2C_BOARD_INFO("deserializer1", 0x4C)}, + {I2C_BOARD_INFO("deserializer2", 0x2A)}, +}; + +static const struct mgb4_i2c_kv fpdl3_i2c[] = { + {0x06, 0xFF, 0x04}, {0x07, 0xFF, 0x01}, {0x45, 0xFF, 0xE8}, + {0x49, 0xFF, 0x00}, {0x34, 0xFF, 0x00}, {0x23, 0xFF, 0x00} +}; + +static const struct mgb4_i2c_kv gmsl_i2c[] = { + {0x01, 0x03, 0x03}, {0x300, 0x0C, 0x0C}, {0x03, 0xC0, 0xC0}, + {0x1CE, 0x0E, 0x0E}, {0x11, 0x05, 0x00}, {0x05, 0xC0, 0x40}, + {0x307, 0x0F, 0x00}, {0xA0, 0x03, 0x00}, {0x3E0, 0x07, 0x07}, + {0x308, 0x01, 0x01}, {0x10, 0x20, 0x20}, {0x300, 0x40, 0x40} +}; + +static const struct v4l2_dv_timings_cap video_timings_cap = { + .type = V4L2_DV_BT_656_1120, + .bt = { + .min_width = 320, + .max_width = 4096, + .min_height = 240, + .max_height = 2160, + .min_pixelclock = 1843200, /* 320 x 240 x 24Hz */ + .max_pixelclock = 530841600, /* 4096 x 2160 x 60Hz */ + .standards = V4L2_DV_BT_STD_CEA861 | V4L2_DV_BT_STD_DMT | + V4L2_DV_BT_STD_CVT | V4L2_DV_BT_STD_GTF, + .capabilities = V4L2_DV_BT_CAP_PROGRESSIVE | + V4L2_DV_BT_CAP_CUSTOM, + }, +}; + +/* + * Returns the video output connected with the given video input if the input + * is in loopback mode. + */ +static struct mgb4_vout_dev *loopback_dev(struct mgb4_vin_dev *vindev, int i) +{ + struct mgb4_vout_dev *voutdev; + u32 config; + + voutdev = vindev->mgbdev->vout[i]; + if (!voutdev) + return NULL; + + config = mgb4_read_reg(&voutdev->mgbdev->video, voutdev->config->regs.config); + if ((config & 0xc) >> 2 == vindev->config->id) + return voutdev; + + return NULL; +} + +/* + * Check, whether the loopback mode - a HW INPUT->OUTPUT transmission - is + * enabled on the given input. + */ +static int loopback_active(struct mgb4_vin_dev *vindev) +{ + int i; + + for (i = 0; i < MGB4_VOUT_DEVICES; i++) + if (loopback_dev(vindev, i)) + return 1; + + return 0; +} + +/* + * Set the output frame buffer padding of all outputs connected with the given + * input when the video input is set to loopback mode. The paddings must be + * the same for the loopback to work properly. + */ +static void set_loopback_padding(struct mgb4_vin_dev *vindev, u32 padding) +{ + struct mgb4_regs *video = &vindev->mgbdev->video; + struct mgb4_vout_dev *voutdev; + int i; + + for (i = 0; i < MGB4_VOUT_DEVICES; i++) { + voutdev = loopback_dev(vindev, i); + if (voutdev) + mgb4_write_reg(video, voutdev->config->regs.padding, + padding); + } +} + +static u32 detect_resolution(struct mgb4_vin_dev *vindev) +{ + struct mgb4_regs *video = &vindev->mgbdev->video; + u32 resolution; + + resolution = mgb4_read_reg(video, vindev->config->regs.resolution); + if (resolution >= ERR_NO_REG) + return 0; + + return ((resolution >> 16) == 0 || (resolution & 0xFFFF) == 0) + ? 0 : resolution; +} + +static int res_cmp(u32 width, u32 height, u32 resolution) +{ + return (width != (resolution >> 16) || height != (resolution & 0xFFFF)) + ? 1 : 0; +} + +static void return_all_buffers(struct mgb4_vin_dev *vindev, + enum vb2_buffer_state state) +{ + struct frame_buffer *buf, *node; + unsigned long flags; + + spin_lock_irqsave(&vindev->qlock, flags); + list_for_each_entry_safe(buf, node, &vindev->buf_list, list) { + vb2_buffer_done(&buf->vb.vb2_buf, state); + list_del(&buf->list); + } + spin_unlock_irqrestore(&vindev->qlock, flags); +} + +static int queue_setup(struct vb2_queue *q, unsigned int *nbuffers, + unsigned int *nplanes, unsigned int sizes[], + struct device *alloc_devs[]) +{ + struct mgb4_vin_dev *vindev = vb2_get_drv_priv(q); + unsigned int size = BYTESPERLINE(vindev->width, vindev->alignment) + * vindev->height; + + if (*nbuffers < 2) + *nbuffers = 2; + + if (*nplanes) + return sizes[0] < size ? -EINVAL : 0; + *nplanes = 1; + sizes[0] = size; + + return 0; +} + +static int buffer_init(struct vb2_buffer *vb) +{ + struct vb2_v4l2_buffer *vbuf = to_vb2_v4l2_buffer(vb); + struct frame_buffer *buf = to_frame_buffer(vbuf); + + INIT_LIST_HEAD(&buf->list); + + return 0; +} + +static int buffer_prepare(struct vb2_buffer *vb) +{ + struct mgb4_vin_dev *vindev = vb2_get_drv_priv(vb->vb2_queue); + struct device *dev = &vindev->mgbdev->pdev->dev; + unsigned int size = BYTESPERLINE(vindev->width, vindev->alignment) + * vindev->height; + + if (vb2_plane_size(vb, 0) < size) { + dev_err(dev, "buffer too small (%lu < %u)\n", + vb2_plane_size(vb, 0), size); + return -EINVAL; + } + + vb2_set_plane_payload(vb, 0, size); + + return 0; +} + +static void buffer_queue(struct vb2_buffer *vb) +{ + struct mgb4_vin_dev *vindev = vb2_get_drv_priv(vb->vb2_queue); + struct vb2_v4l2_buffer *vbuf = to_vb2_v4l2_buffer(vb); + struct frame_buffer *buf = to_frame_buffer(vbuf); + unsigned long flags; + + spin_lock_irqsave(&vindev->qlock, flags); + list_add_tail(&buf->list, &vindev->buf_list); + spin_unlock_irqrestore(&vindev->qlock, flags); +} + +static void stop_streaming(struct vb2_queue *vq) +{ + struct mgb4_vin_dev *vindev = vb2_get_drv_priv(vq); + int irq = xdma_get_user_irq(vindev->mgbdev->xdev, vindev->config->vin_irq); + + xdma_disable_user_irq(vindev->mgbdev->xdev, irq); + + /* + * In loopback mode, the HW frame queue must be left running for + * the IN->OUT transmission to work! + */ + if (!loopback_active(vindev)) + mgb4_mask_reg(&vindev->mgbdev->video, vindev->config->regs.config, + 0x2, 0x0); + + cancel_work_sync(&vindev->dma_work); + return_all_buffers(vindev, VB2_BUF_STATE_ERROR); +} + +static int start_streaming(struct vb2_queue *vq, unsigned int count) +{ + struct mgb4_vin_dev *vindev = vb2_get_drv_priv(vq); + int irq = xdma_get_user_irq(vindev->mgbdev->xdev, vindev->config->vin_irq); + u32 resolution = detect_resolution(vindev); + + if (res_cmp(vindev->width, vindev->height, resolution)) { + return_all_buffers(vindev, VB2_BUF_STATE_QUEUED); + return -EIO; + } + + vindev->sequence = 0; + + /* + * In loopback mode, the HW frame queue is already running. + */ + if (!loopback_active(vindev)) + mgb4_mask_reg(&vindev->mgbdev->video, vindev->config->regs.config, + 0x2, 0x2); + + xdma_enable_user_irq(vindev->mgbdev->xdev, irq); + + return 0; +} + +static const struct vb2_ops queue_ops = { + .queue_setup = queue_setup, + .buf_init = buffer_init, + .buf_prepare = buffer_prepare, + .buf_queue = buffer_queue, + .start_streaming = start_streaming, + .stop_streaming = stop_streaming, + .wait_prepare = vb2_ops_wait_prepare, + .wait_finish = vb2_ops_wait_finish +}; + +static int fh_open(struct file *file) +{ + struct mgb4_vin_dev *vindev = video_drvdata(file); + struct mgb4_regs *video = &vindev->mgbdev->video; + u32 resolution, padding; + int ret; + + mutex_lock(&vindev->lock); + + ret = v4l2_fh_open(file); + if (ret) + goto out; + + if (!v4l2_fh_is_singular_file(file)) + goto out; + + resolution = detect_resolution(vindev); + if (!resolution) + goto out; + + vindev->width = resolution >> 16; + vindev->height = resolution & 0xFFFF; + padding = PADDING(vindev->width, vindev->alignment); + mgb4_write_reg(video, vindev->config->regs.padding, padding); + set_loopback_padding(vindev, padding); + +out: + mutex_unlock(&vindev->lock); + return ret; +} + +static int fh_release(struct file *file) +{ + struct mgb4_vin_dev *vindev = video_drvdata(file); + struct mgb4_regs *video = &vindev->mgbdev->video; + int ret; + + mutex_lock(&vindev->lock); + + if (v4l2_fh_is_singular_file(file)) { + mgb4_write_reg(video, vindev->config->regs.padding, 0); + set_loopback_padding(vindev, 0); + } + + ret = _vb2_fop_release(file, NULL); + + mutex_unlock(&vindev->lock); + + return ret; +} + +static const struct v4l2_file_operations video_fops = { + .owner = THIS_MODULE, + .open = fh_open, + .release = fh_release, + .unlocked_ioctl = video_ioctl2, + .read = vb2_fop_read, + .mmap = vb2_fop_mmap, + .poll = vb2_fop_poll, +}; + +static int vidioc_querycap(struct file *file, void *priv, + struct v4l2_capability *cap) +{ + strscpy(cap->driver, KBUILD_MODNAME, sizeof(cap->driver)); + strscpy(cap->card, "MGB4 PCIe Card", sizeof(cap->card)); + + return 0; +} + +static int vidioc_enum_fmt(struct file *file, void *priv, + struct v4l2_fmtdesc *f) +{ + if (f->index != 0) + return -EINVAL; + + f->pixelformat = V4L2_PIX_FMT_ABGR32; + + return 0; +} + +static int vidioc_enum_frameintervals(struct file *file, void *priv, + struct v4l2_frmivalenum *ival) +{ + struct mgb4_vin_dev *vindev = video_drvdata(file); + + if (ival->index != 0) + return -EINVAL; + if (ival->pixel_format != V4L2_PIX_FMT_ABGR32) + return -EINVAL; + if (ival->width != vindev->width || ival->height != vindev->height) + return -EINVAL; + + ival->type = V4L2_FRMIVAL_TYPE_CONTINUOUS; + ival->stepwise.min.denominator = 60; + ival->stepwise.min.numerator = 1; + ival->stepwise.max.denominator = 1; + ival->stepwise.max.numerator = 1; + ival->stepwise.step = ival->stepwise.max; + + return 0; +} + +static int vidioc_fmt(struct file *file, void *priv, struct v4l2_format *f) +{ + struct mgb4_vin_dev *vindev = video_drvdata(file); + + f->fmt.pix.pixelformat = V4L2_PIX_FMT_ABGR32; + f->fmt.pix.width = vindev->width; + f->fmt.pix.height = vindev->height; + f->fmt.pix.field = V4L2_FIELD_NONE; + f->fmt.pix.colorspace = V4L2_COLORSPACE_RAW; + f->fmt.pix.bytesperline = BYTESPERLINE(vindev->width, vindev->alignment); + f->fmt.pix.sizeimage = f->fmt.pix.bytesperline * f->fmt.pix.height; + + return 0; +} + +static int vidioc_enum_input(struct file *file, void *priv, struct v4l2_input *i) +{ + struct mgb4_vin_dev *vindev = video_drvdata(file); + + if (i->index != 0) + return -EINVAL; + + strscpy(i->name, "MGB4", sizeof(i->name)); + i->type = V4L2_INPUT_TYPE_CAMERA; + i->capabilities = V4L2_IN_CAP_DV_TIMINGS; + i->status = detect_resolution(vindev) ? 0 : V4L2_IN_ST_NO_SIGNAL; + + return 0; +} + +static int vidioc_enum_framesizes(struct file *file, void *fh, + struct v4l2_frmsizeenum *fsize) +{ + struct mgb4_vin_dev *vindev = video_drvdata(file); + + if (fsize->index != 0 || fsize->pixel_format != V4L2_PIX_FMT_ABGR32) + return -EINVAL; + + fsize->discrete.width = vindev->width; + fsize->discrete.height = vindev->height; + fsize->type = V4L2_FRMSIZE_TYPE_DISCRETE; + + return 0; +} + +static int vidioc_s_input(struct file *file, void *priv, unsigned int i) +{ + return (i == 0) ? 0 : -EINVAL; +} + +static int vidioc_g_input(struct file *file, void *priv, unsigned int *i) +{ + *i = 0; + return 0; +} + +static int vidioc_parm(struct file *file, void *priv, + struct v4l2_streamparm *parm) +{ + struct mgb4_vin_dev *vindev = video_drvdata(file); + struct mgb4_regs *video = &vindev->mgbdev->video; + struct v4l2_fract timeperframe = { + .numerator = mgb4_read_reg(video, vindev->config->regs.frame_period), + .denominator = 125000000, + }; + + if (parm->type != V4L2_BUF_TYPE_VIDEO_CAPTURE) + return -EINVAL; + + parm->parm.capture.readbuffers = 2; + parm->parm.capture.capability = V4L2_CAP_TIMEPERFRAME; + parm->parm.capture.timeperframe = timeperframe; + + return 0; +} + +static int vidioc_s_dv_timings(struct file *file, void *fh, + struct v4l2_dv_timings *timings) +{ + struct mgb4_vin_dev *vindev = video_drvdata(file); + struct mgb4_regs *video = &vindev->mgbdev->video; + u32 padding; + + if (timings->bt.width == vindev->width && + timings->bt.height == vindev->height) + return 0; + if (vb2_is_busy(&vindev->queue)) + return -EBUSY; + + vindev->width = timings->bt.width; + vindev->height = timings->bt.height; + padding = PADDING(vindev->width, vindev->alignment); + mgb4_write_reg(video, vindev->config->regs.padding, padding); + set_loopback_padding(vindev, padding); + + return 0; +} + +static int vidioc_g_dv_timings(struct file *file, void *fh, + struct v4l2_dv_timings *timings) +{ + struct mgb4_vin_dev *vindev = video_drvdata(file); + + memset(timings, 0, sizeof(*timings)); + timings->type = V4L2_DV_BT_656_1120; + timings->bt.width = vindev->width; + timings->bt.height = vindev->height; + + return 0; +} + +static int vidioc_query_dv_timings(struct file *file, void *fh, + struct v4l2_dv_timings *timings) +{ + struct mgb4_vin_dev *vindev = video_drvdata(file); + u32 resolution = detect_resolution(vindev); + + if (!resolution) + return -ENOLINK; + + memset(timings, 0, sizeof(*timings)); + timings->type = V4L2_DV_BT_656_1120; + timings->bt.width = resolution >> 16; + timings->bt.height = resolution & 0xFFFF; + + return 0; +} + +static int vidioc_enum_dv_timings(struct file *file, void *fh, + struct v4l2_enum_dv_timings *timings) +{ + return v4l2_enum_dv_timings_cap(timings, &video_timings_cap, NULL, NULL); +} + +static int vidioc_dv_timings_cap(struct file *file, void *fh, + struct v4l2_dv_timings_cap *cap) +{ + *cap = video_timings_cap; + + return 0; +} + +static int vidioc_subscribe_event(struct v4l2_fh *fh, + const struct v4l2_event_subscription *sub) +{ + switch (sub->type) { + case V4L2_EVENT_SOURCE_CHANGE: + return v4l2_src_change_event_subscribe(fh, sub); + } + + return v4l2_ctrl_subscribe_event(fh, sub); +} + +static const struct v4l2_ioctl_ops video_ioctl_ops = { + .vidioc_querycap = vidioc_querycap, + .vidioc_enum_fmt_vid_cap = vidioc_enum_fmt, + .vidioc_try_fmt_vid_cap = vidioc_fmt, + .vidioc_s_fmt_vid_cap = vidioc_fmt, + .vidioc_g_fmt_vid_cap = vidioc_fmt, + .vidioc_enum_framesizes = vidioc_enum_framesizes, + .vidioc_enum_frameintervals = vidioc_enum_frameintervals, + .vidioc_enum_input = vidioc_enum_input, + .vidioc_g_input = vidioc_g_input, + .vidioc_s_input = vidioc_s_input, + .vidioc_reqbufs = vb2_ioctl_reqbufs, + .vidioc_create_bufs = vb2_ioctl_create_bufs, + .vidioc_prepare_buf = vb2_ioctl_prepare_buf, + .vidioc_querybuf = vb2_ioctl_querybuf, + .vidioc_qbuf = vb2_ioctl_qbuf, + .vidioc_dqbuf = vb2_ioctl_dqbuf, + .vidioc_expbuf = vb2_ioctl_expbuf, + .vidioc_streamon = vb2_ioctl_streamon, + .vidioc_streamoff = vb2_ioctl_streamoff, + .vidioc_g_parm = vidioc_parm, + .vidioc_s_parm = vidioc_parm, + .vidioc_dv_timings_cap = vidioc_dv_timings_cap, + .vidioc_enum_dv_timings = vidioc_enum_dv_timings, + .vidioc_g_dv_timings = vidioc_g_dv_timings, + .vidioc_s_dv_timings = vidioc_s_dv_timings, + .vidioc_query_dv_timings = vidioc_query_dv_timings, + .vidioc_subscribe_event = vidioc_subscribe_event, + .vidioc_unsubscribe_event = v4l2_event_unsubscribe, +}; + +static void dma_transfer(struct work_struct *work) +{ + struct mgb4_vin_dev *vindev = container_of(work, struct mgb4_vin_dev, dma_work); + struct device *dev = &vindev->mgbdev->pdev->dev; + struct frame_buffer *buf = 0; + unsigned long flags; + u32 addr; + + spin_lock_irqsave(&vindev->qlock, flags); + if (!list_empty(&vindev->buf_list)) { + buf = list_first_entry(&vindev->buf_list, struct frame_buffer, list); + list_del_init(vindev->buf_list.next); + } + spin_unlock_irqrestore(&vindev->qlock, flags); + + if (!buf) + return; + + addr = mgb4_read_reg(&vindev->mgbdev->video, vindev->config->regs.address); + if (addr >= ERR_QUEUE_FULL) { + dev_warn(dev, "frame queue error (%d)\n", (int)addr); + vb2_buffer_done(&buf->vb.vb2_buf, VB2_BUF_STATE_ERROR); + return; + } + + if (mgb4_dma_transfer(vindev->mgbdev, vindev->config->dma_channel, false, + addr, vb2_dma_sg_plane_desc(&buf->vb.vb2_buf, 0)) < 0) { + dev_warn(dev, "DMA transfer error\n"); + vb2_buffer_done(&buf->vb.vb2_buf, VB2_BUF_STATE_ERROR); + } else { + buf->vb.vb2_buf.timestamp = ktime_get_ns(); + buf->vb.sequence = vindev->sequence++; + buf->vb.field = V4L2_FIELD_NONE; + vb2_buffer_done(&buf->vb.vb2_buf, VB2_BUF_STATE_DONE); + } +} + +static void signal_change(struct work_struct *work) +{ + struct mgb4_vin_dev *vindev = container_of(work, struct mgb4_vin_dev, err_work); + struct device *dev = &vindev->mgbdev->pdev->dev; + u32 resolution = detect_resolution(vindev); + + if (res_cmp(vindev->width, vindev->height, resolution)) { + static const struct v4l2_event ev = { + .type = V4L2_EVENT_SOURCE_CHANGE, + .u.src_change.changes = V4L2_EVENT_SRC_CH_RESOLUTION, + }; + + v4l2_event_queue(&vindev->vdev, &ev); + + if (vb2_is_streaming(&vindev->queue)) + vb2_queue_error(&vindev->queue); + } + + dev_warn(dev, "stream changed to %ux%u\n", resolution >> 16, + resolution & 0xFFFF); +} + +static irqreturn_t vin_handler(int irq, void *ctx) +{ + struct mgb4_vin_dev *vindev = (struct mgb4_vin_dev *)ctx; + + schedule_work(&vindev->dma_work); + + mgb4_write_reg(&vindev->mgbdev->video, 0xB4, 1U << vindev->config->vin_irq); + + return IRQ_HANDLED; +} + +static irqreturn_t err_handler(int irq, void *ctx) +{ + struct mgb4_vin_dev *vindev = (struct mgb4_vin_dev *)ctx; + + schedule_work(&vindev->err_work); + + mgb4_write_reg(&vindev->mgbdev->video, 0xB4, 1U << vindev->config->err_irq); + + return IRQ_HANDLED; +} + +static int deser_init(struct mgb4_vin_dev *vindev, int id) +{ + int rv, addr_size; + size_t values_count; + const struct mgb4_i2c_kv *values; + const struct i2c_board_info *info; + struct device *dev = &vindev->mgbdev->pdev->dev; + + if (MGB4_IS_GMSL(vindev->mgbdev)) { + info = &gmsl_deser_info[id]; + addr_size = 16; + values = gmsl_i2c; + values_count = ARRAY_SIZE(gmsl_i2c); + } else { + info = &fpdl3_deser_info[id]; + addr_size = 8; + values = fpdl3_i2c; + values_count = ARRAY_SIZE(fpdl3_i2c); + } + + rv = mgb4_i2c_init(&vindev->deser, vindev->mgbdev->i2c_adap, info, addr_size); + if (rv < 0) { + dev_err(dev, "failed to create deserializer\n"); + return rv; + } + rv = mgb4_i2c_configure(&vindev->deser, values, values_count); + if (rv < 0) { + dev_err(dev, "failed to configure deserializer\n"); + goto err_i2c_dev; + } + + return 0; + +err_i2c_dev: + mgb4_i2c_free(&vindev->deser); + + return rv; +} + +struct mgb4_vin_dev *mgb4_vin_create(struct mgb4_dev *mgbdev, int id) +{ + int rv; + struct device_attribute **attr, **module_attr; + struct mgb4_vin_dev *vindev; + struct pci_dev *pdev = mgbdev->pdev; + struct device *dev = &pdev->dev; + int vin_irq, err_irq; + + vindev = kzalloc(sizeof(*vindev), GFP_KERNEL); + if (!vindev) + return NULL; + + vindev->mgbdev = mgbdev; + vindev->config = &vin_cfg[id]; + + /* Frame queue*/ + INIT_LIST_HEAD(&vindev->buf_list); + spin_lock_init(&vindev->qlock); + + /* Work queues */ + INIT_WORK(&vindev->dma_work, dma_transfer); + INIT_WORK(&vindev->err_work, signal_change); + + /* IRQ callback */ + vin_irq = xdma_get_user_irq(mgbdev->xdev, vindev->config->vin_irq); + rv = request_irq(vin_irq, vin_handler, 0, "mgb4-vin", vindev); + if (rv) { + dev_err(dev, "failed to register vin irq handler\n"); + goto err_alloc; + } + /* Error IRQ callback */ + err_irq = xdma_get_user_irq(mgbdev->xdev, vindev->config->err_irq); + rv = request_irq(err_irq, err_handler, 0, "mgb4-err", vindev); + if (rv) { + dev_err(dev, "failed to register err irq handler\n"); + goto err_vin_irq; + } + + /* V4L2 */ + rv = v4l2_device_register(dev, &vindev->v4l2dev); + if (rv) { + dev_err(dev, "failed to register v4l2 device\n"); + goto err_err_irq; + } + + mutex_init(&vindev->lock); + + vindev->queue.type = V4L2_BUF_TYPE_VIDEO_CAPTURE; + vindev->queue.io_modes = VB2_MMAP | VB2_DMABUF | VB2_READ; + vindev->queue.buf_struct_size = sizeof(struct frame_buffer); + vindev->queue.ops = &queue_ops; + vindev->queue.mem_ops = &vb2_dma_sg_memops; + vindev->queue.gfp_flags = GFP_DMA32; + vindev->queue.timestamp_flags = V4L2_BUF_FLAG_TIMESTAMP_MONOTONIC; + vindev->queue.min_buffers_needed = 2; + vindev->queue.drv_priv = vindev; + vindev->queue.lock = &vindev->lock; + vindev->queue.dev = dev; + rv = vb2_queue_init(&vindev->queue); + if (rv) { + dev_err(dev, "failed to initialize vb2 queue\n"); + goto err_v4l2_dev; + } + + snprintf(vindev->vdev.name, sizeof(vindev->vdev.name), "mgb4-in%d", id + 1); + vindev->vdev.device_caps = V4L2_CAP_VIDEO_CAPTURE | V4L2_CAP_READWRITE + | V4L2_CAP_STREAMING; + vindev->vdev.fops = &video_fops; + vindev->vdev.ioctl_ops = &video_ioctl_ops; + vindev->vdev.release = video_device_release_empty; + vindev->vdev.v4l2_dev = &vindev->v4l2dev; + vindev->vdev.lock = &vindev->lock; + vindev->vdev.queue = &vindev->queue; + video_set_drvdata(&vindev->vdev, vindev); + + rv = video_register_device(&vindev->vdev, VFL_TYPE_VIDEO, -1); + if (rv) { + dev_err(dev, "failed to register video device\n"); + goto err_v4l2_dev; + } + + /* Deserializer */ + rv = deser_init(vindev, id); + if (rv) + goto err_video_dev; + + /* Set FPGA regs to comply with the deserializer state */ + mgb4_mask_reg(&vindev->mgbdev->video, vindev->config->regs.config, + 1U << 9, 1U << 9); + + /* + * Video buffer & signal defaults; something must be set even if we + * have no signal at all. + */ + vindev->width = DEFAULT_WIDTH; + vindev->height = DEFAULT_HEIGHT; + vindev->alignment = 1; + + /* Module sysfs attributes */ + module_attr = MGB4_IS_GMSL(mgbdev) + ? mgb4_gmsl_in_attrs : mgb4_fpdl3_in_attrs; + for (attr = module_attr; *attr; attr++) + device_create_file(&vindev->vdev.dev, *attr); + + /* Enable the video signal change watcher */ + xdma_enable_user_irq(vindev->mgbdev->xdev, err_irq); + + return vindev; + +err_video_dev: + video_unregister_device(&vindev->vdev); +err_v4l2_dev: + v4l2_device_unregister(&vindev->v4l2dev); +err_err_irq: + free_irq(err_irq, vindev); +err_vin_irq: + free_irq(vin_irq, vindev); +err_alloc: + kfree(vindev); + + return NULL; +} + +void mgb4_vin_free(struct mgb4_vin_dev *vindev) +{ + struct device_attribute **attr, **module_attr; + int vin_irq = xdma_get_user_irq(vindev->mgbdev->xdev, + vindev->config->vin_irq); + int err_irq = xdma_get_user_irq(vindev->mgbdev->xdev, + vindev->config->err_irq); + + xdma_disable_user_irq(vindev->mgbdev->xdev, err_irq); + + free_irq(vin_irq, vindev); + free_irq(err_irq, vindev); + + module_attr = MGB4_IS_GMSL(vindev->mgbdev) + ? mgb4_gmsl_in_attrs : mgb4_fpdl3_in_attrs; + for (attr = module_attr; *attr; attr++) + device_remove_file(&vindev->vdev.dev, *attr); + + mgb4_i2c_free(&vindev->deser); + video_unregister_device(&vindev->vdev); + v4l2_device_unregister(&vindev->v4l2dev); + + kfree(vindev); +} diff --git a/drivers/media/pci/mgb4/mgb4_vin.h b/drivers/media/pci/mgb4/mgb4_vin.h new file mode 100644 index 000000000000..95cf21f42fa7 --- /dev/null +++ b/drivers/media/pci/mgb4/mgb4_vin.h @@ -0,0 +1,63 @@ +/* SPDX-License-Identifier: GPL-2.0-only */ +/* + * Copyright (C) 2021-2022 Digiteq Automotive + * author: Martin Tuma + */ + +#ifndef __MGB4_VIN_H__ +#define __MGB4_VIN_H__ + +#include +#include +#include +#include +#include "mgb4_i2c.h" + +struct mgb4_vin_regs { + u32 address; + u32 config; + u32 status; + u32 resolution; + u32 frame_period; + u32 sync; + u32 pclk; + u32 signal; + u32 signal2; + u32 padding; +}; + +struct mgb4_vin_config { + int id; + int dma_channel; + int vin_irq; + int err_irq; + struct mgb4_vin_regs regs; +}; + +struct mgb4_vin_dev { + struct mgb4_dev *mgbdev; + struct v4l2_device v4l2dev; + struct video_device vdev; + struct vb2_queue queue; + struct mutex lock; /* vdev lock */ + + spinlock_t qlock; /* video buffer queue lock */ + struct list_head buf_list; + struct work_struct dma_work, err_work; + + unsigned int sequence; + + u32 width; + u32 height; + u32 freq_range; + u32 alignment; + + struct mgb4_i2c_client deser; + + const struct mgb4_vin_config *config; +}; + +struct mgb4_vin_dev *mgb4_vin_create(struct mgb4_dev *mgbdev, int id); +void mgb4_vin_free(struct mgb4_vin_dev *vindev); + +#endif diff --git a/drivers/media/pci/mgb4/mgb4_vout.c b/drivers/media/pci/mgb4/mgb4_vout.c new file mode 100644 index 000000000000..47800d191b84 --- /dev/null +++ b/drivers/media/pci/mgb4/mgb4_vout.c @@ -0,0 +1,501 @@ +// SPDX-License-Identifier: GPL-2.0-only +/* + * Copyright (C) 2021-2022 Digiteq Automotive + * author: Martin Tuma + * + * This is the v4l2 output device module. It initializes the signal serializers + * and creates the v4l2 video devices. + * + * When the device is in loopback mode (a direct, in HW, in->out frame passing + * mode) we disable the v4l2 output by returning EBUSY in the open() syscall. + */ + +#include +#include +#include +#include +#include +#include "mgb4_core.h" +#include "mgb4_dma.h" +#include "mgb4_sysfs.h" +#include "mgb4_io.h" +#include "mgb4_vout.h" + +static const struct mgb4_vout_config vout_cfg[] = { + {0, 0, 8, {0x78, 0x60, 0x64, 0x68, 0x74, 0x6C, 0x70, 0x7c}}, + {1, 1, 9, {0x98, 0x80, 0x84, 0x88, 0x94, 0x8c, 0x90, 0x9c}} +}; + +static const struct i2c_board_info fpdl3_ser_info[] = { + {I2C_BOARD_INFO("serializer1", 0x14)}, + {I2C_BOARD_INFO("serializer2", 0x16)}, +}; + +static const struct mgb4_i2c_kv fpdl3_i2c[] = { + {0x05, 0xFF, 0x04}, {0x06, 0xFF, 0x01}, {0xC2, 0xFF, 0x80} +}; + +static void return_all_buffers(struct mgb4_vout_dev *voutdev, + enum vb2_buffer_state state) +{ + struct frame_buffer *buf, *node; + unsigned long flags; + + spin_lock_irqsave(&voutdev->qlock, flags); + list_for_each_entry_safe(buf, node, &voutdev->buf_list, list) { + vb2_buffer_done(&buf->vb.vb2_buf, state); + list_del(&buf->list); + } + spin_unlock_irqrestore(&voutdev->qlock, flags); +} + +static int queue_setup(struct vb2_queue *q, unsigned int *nbuffers, + unsigned int *nplanes, unsigned int sizes[], + struct device *alloc_devs[]) +{ + struct mgb4_vout_dev *voutdev = vb2_get_drv_priv(q); + unsigned long size = BYTESPERLINE(voutdev->width, voutdev->alignment) + * voutdev->height; + + if (*nbuffers < 2) + *nbuffers = 2; + + if (*nplanes) + return sizes[0] < size ? -EINVAL : 0; + *nplanes = 1; + sizes[0] = size; + + return 0; +} + +static int buffer_init(struct vb2_buffer *vb) +{ + struct vb2_v4l2_buffer *vbuf = to_vb2_v4l2_buffer(vb); + struct frame_buffer *buf = to_frame_buffer(vbuf); + + INIT_LIST_HEAD(&buf->list); + + return 0; +} + +static int buffer_prepare(struct vb2_buffer *vb) +{ + struct mgb4_vout_dev *voutdev = vb2_get_drv_priv(vb->vb2_queue); + struct device *dev = &voutdev->mgbdev->pdev->dev; + unsigned long size = BYTESPERLINE(voutdev->width, voutdev->alignment) + * voutdev->height; + + if (vb2_plane_size(vb, 0) < size) { + dev_err(dev, "buffer too small (%lu < %lu)\n", + vb2_plane_size(vb, 0), size); + return -EINVAL; + } + + vb2_set_plane_payload(vb, 0, size); + + return 0; +} + +static void buffer_queue(struct vb2_buffer *vb) +{ + struct mgb4_vout_dev *vindev = vb2_get_drv_priv(vb->vb2_queue); + struct vb2_v4l2_buffer *vbuf = to_vb2_v4l2_buffer(vb); + struct frame_buffer *buf = to_frame_buffer(vbuf); + unsigned long flags; + + spin_lock_irqsave(&vindev->qlock, flags); + list_add_tail(&buf->list, &vindev->buf_list); + spin_unlock_irqrestore(&vindev->qlock, flags); +} + +static void stop_streaming(struct vb2_queue *vq) +{ + struct mgb4_vout_dev *voutdev = vb2_get_drv_priv(vq); + int irq = xdma_get_user_irq(voutdev->mgbdev->xdev, voutdev->config->irq); + + xdma_disable_user_irq(voutdev->mgbdev->xdev, irq); + + cancel_work_sync(&voutdev->dma_work); + + mgb4_mask_reg(&voutdev->mgbdev->video, voutdev->config->regs.config, + 0x2, 0x0); + + return_all_buffers(voutdev, VB2_BUF_STATE_ERROR); +} + +static int start_streaming(struct vb2_queue *vq, unsigned int count) +{ + struct mgb4_vout_dev *voutdev = vb2_get_drv_priv(vq); + struct device *dev = &voutdev->mgbdev->pdev->dev; + struct frame_buffer *buf = 0; + struct mgb4_regs *video = &voutdev->mgbdev->video; + int irq = xdma_get_user_irq(voutdev->mgbdev->xdev, voutdev->config->irq); + u32 addr; + + mgb4_mask_reg(video, voutdev->config->regs.config, 0x2, 0x2); + + addr = mgb4_read_reg(video, voutdev->config->regs.address); + if (addr >= ERR_QUEUE_FULL) { + dev_err(dev, "frame queue error (%d)\n", (int)addr); + return_all_buffers(voutdev, VB2_BUF_STATE_QUEUED); + return -EIO; + } + + buf = list_first_entry(&voutdev->buf_list, struct frame_buffer, list); + list_del_init(voutdev->buf_list.next); + + if (mgb4_dma_transfer(voutdev->mgbdev, voutdev->config->dma_channel, true, + addr, vb2_dma_sg_plane_desc(&buf->vb.vb2_buf, 0)) < 0) { + dev_warn(dev, "DMA transfer error\n"); + vb2_buffer_done(&buf->vb.vb2_buf, VB2_BUF_STATE_ERROR); + } else { + vb2_buffer_done(&buf->vb.vb2_buf, VB2_BUF_STATE_DONE); + } + + xdma_enable_user_irq(voutdev->mgbdev->xdev, irq); + + return 0; +} + +static const struct vb2_ops queue_ops = { + .queue_setup = queue_setup, + .buf_init = buffer_init, + .buf_prepare = buffer_prepare, + .buf_queue = buffer_queue, + .start_streaming = start_streaming, + .stop_streaming = stop_streaming, + .wait_prepare = vb2_ops_wait_prepare, + .wait_finish = vb2_ops_wait_finish +}; + +static int vidioc_querycap(struct file *file, void *priv, + struct v4l2_capability *cap) +{ + strscpy(cap->driver, KBUILD_MODNAME, sizeof(cap->driver)); + strscpy(cap->card, "MGB4 PCIe Card", sizeof(cap->card)); + + return 0; +} + +static int vidioc_enum_fmt(struct file *file, void *priv, + struct v4l2_fmtdesc *f) +{ + if (f->index != 0) + return -EINVAL; + + f->pixelformat = V4L2_PIX_FMT_ABGR32; + + return 0; +} + +static int vidioc_fmt(struct file *file, void *priv, struct v4l2_format *f) +{ + struct mgb4_vout_dev *voutdev = video_drvdata(file); + + f->fmt.pix.pixelformat = V4L2_PIX_FMT_ABGR32; + f->fmt.pix.width = voutdev->width; + f->fmt.pix.height = voutdev->height; + f->fmt.pix.field = V4L2_FIELD_NONE; + f->fmt.pix.colorspace = V4L2_COLORSPACE_RAW; + f->fmt.pix.bytesperline = BYTESPERLINE(voutdev->width, voutdev->alignment); + f->fmt.pix.sizeimage = f->fmt.pix.width * 4 * f->fmt.pix.height; + + return 0; +} + +static int vidioc_g_output(struct file *file, void *priv, unsigned int *i) +{ + *i = 0; + return 0; +} + +static int vidioc_s_output(struct file *file, void *priv, unsigned int i) +{ + return i ? -EINVAL : 0; +} + +static int vidioc_enum_output(struct file *file, void *priv, struct v4l2_output *out) +{ + if (out->index != 0) + return -EINVAL; + + out->type = V4L2_OUTPUT_TYPE_ANALOG; + strscpy(out->name, "MGB4", sizeof(out->name)); + + return 0; +} + +static const struct v4l2_ioctl_ops video_ioctl_ops = { + .vidioc_querycap = vidioc_querycap, + .vidioc_enum_fmt_vid_out = vidioc_enum_fmt, + .vidioc_try_fmt_vid_out = vidioc_fmt, + .vidioc_s_fmt_vid_out = vidioc_fmt, + .vidioc_g_fmt_vid_out = vidioc_fmt, + .vidioc_enum_output = vidioc_enum_output, + .vidioc_g_output = vidioc_g_output, + .vidioc_s_output = vidioc_s_output, + .vidioc_reqbufs = vb2_ioctl_reqbufs, + .vidioc_create_bufs = vb2_ioctl_create_bufs, + .vidioc_prepare_buf = vb2_ioctl_prepare_buf, + .vidioc_querybuf = vb2_ioctl_querybuf, + .vidioc_qbuf = vb2_ioctl_qbuf, + .vidioc_dqbuf = vb2_ioctl_dqbuf, + .vidioc_expbuf = vb2_ioctl_expbuf, + .vidioc_streamon = vb2_ioctl_streamon, + .vidioc_streamoff = vb2_ioctl_streamoff, +}; + +static int fh_open(struct file *file) +{ + struct mgb4_vout_dev *voutdev = video_drvdata(file); + struct mgb4_regs *video = &voutdev->mgbdev->video; + u32 config, resolution; + int ret; + + /* Return EBUSY when the device is in loopback mode */ + config = mgb4_read_reg(video, voutdev->config->regs.config); + if ((config & 0xc) >> 2 != voutdev->config->id + MGB4_VIN_DEVICES) + return -EBUSY; + + mutex_lock(&voutdev->lock); + + ret = v4l2_fh_open(file); + if (ret) + goto out; + + if (!v4l2_fh_is_singular_file(file)) + goto out; + + resolution = mgb4_read_reg(video, voutdev->config->regs.resolution); + voutdev->width = resolution >> 16; + voutdev->height = resolution & 0xFFFF; + mgb4_write_reg(video, voutdev->config->regs.padding, + PADDING(voutdev->width, voutdev->alignment)); + +out: + mutex_unlock(&voutdev->lock); + return ret; +} + +static const struct v4l2_file_operations video_fops = { + .owner = THIS_MODULE, + .open = fh_open, + .release = vb2_fop_release, + .unlocked_ioctl = video_ioctl2, + .write = vb2_fop_write, + .mmap = vb2_fop_mmap, + .poll = vb2_fop_poll, +}; + +static void dma_transfer(struct work_struct *work) +{ + struct mgb4_vout_dev *voutdev = container_of(work, struct mgb4_vout_dev, + dma_work); + struct device *dev = &voutdev->mgbdev->pdev->dev; + struct frame_buffer *buf = 0; + unsigned long flags; + u32 addr; + + spin_lock_irqsave(&voutdev->qlock, flags); + if (!list_empty(&voutdev->buf_list)) { + buf = list_first_entry(&voutdev->buf_list, struct frame_buffer, list); + list_del_init(voutdev->buf_list.next); + } + spin_unlock_irqrestore(&voutdev->qlock, flags); + + if (!buf) + return; + + addr = mgb4_read_reg(&voutdev->mgbdev->video, voutdev->config->regs.address); + if (addr >= ERR_QUEUE_FULL) { + dev_warn(dev, "frame queue error (%d)\n", (int)addr); + vb2_buffer_done(&buf->vb.vb2_buf, VB2_BUF_STATE_ERROR); + return; + } + + if (mgb4_dma_transfer(voutdev->mgbdev, voutdev->config->dma_channel, true, + addr, vb2_dma_sg_plane_desc(&buf->vb.vb2_buf, 0)) < 0) { + dev_warn(dev, "DMA transfer error\n"); + vb2_buffer_done(&buf->vb.vb2_buf, VB2_BUF_STATE_ERROR); + } else { + vb2_buffer_done(&buf->vb.vb2_buf, VB2_BUF_STATE_DONE); + } +} + +static irqreturn_t handler(int irq, void *ctx) +{ + struct mgb4_vout_dev *voutdev = (struct mgb4_vout_dev *)ctx; + + schedule_work(&voutdev->dma_work); + + mgb4_write_reg(&voutdev->mgbdev->video, 0xB4, 1U << voutdev->config->irq); + + return IRQ_HANDLED; +} + +static int ser_init(struct mgb4_vout_dev *voutdev, int id) +{ + int rv, addr_size; + size_t values_count; + const struct mgb4_i2c_kv *values; + const struct i2c_board_info *info; + struct device *dev = &voutdev->mgbdev->pdev->dev; + + if (MGB4_IS_GMSL(voutdev->mgbdev)) + return 0; + + info = &fpdl3_ser_info[id]; + addr_size = 8; + values = fpdl3_i2c; + values_count = ARRAY_SIZE(fpdl3_i2c); + + rv = mgb4_i2c_init(&voutdev->ser, voutdev->mgbdev->i2c_adap, info, addr_size); + if (rv < 0) { + dev_err(dev, "failed to create serializer\n"); + return rv; + } + rv = mgb4_i2c_configure(&voutdev->ser, values, values_count); + if (rv < 0) { + dev_err(dev, "failed to configure serializer\n"); + goto err_i2c_dev; + } + + return 0; + +err_i2c_dev: + mgb4_i2c_free(&voutdev->ser); + + return rv; +} + +struct mgb4_vout_dev *mgb4_vout_create(struct mgb4_dev *mgbdev, int id) +{ + int rv, irq; + struct device_attribute **attr, **module_attr; + struct mgb4_vout_dev *voutdev; + struct mgb4_regs *video; + struct pci_dev *pdev = mgbdev->pdev; + struct device *dev = &pdev->dev; + + voutdev = kzalloc(sizeof(*voutdev), GFP_KERNEL); + if (!voutdev) + return NULL; + + voutdev->mgbdev = mgbdev; + voutdev->config = &vout_cfg[id]; + video = &voutdev->mgbdev->video; + + /* Frame queue*/ + INIT_LIST_HEAD(&voutdev->buf_list); + spin_lock_init(&voutdev->qlock); + + /* DMA transfer stuff */ + INIT_WORK(&voutdev->dma_work, dma_transfer); + + /* IRQ callback */ + irq = xdma_get_user_irq(mgbdev->xdev, voutdev->config->irq); + rv = request_irq(irq, handler, 0, "mgb4-vout", voutdev); + if (rv) { + dev_err(dev, "failed to register irq handler\n"); + goto err_alloc; + } + + /* V4L2 */ + rv = v4l2_device_register(dev, &voutdev->v4l2dev); + if (rv) { + dev_err(dev, "failed to register v4l2 device\n"); + goto err_irq; + } + + mutex_init(&voutdev->lock); + + voutdev->queue.type = V4L2_BUF_TYPE_VIDEO_OUTPUT; + voutdev->queue.io_modes = VB2_MMAP | VB2_DMABUF | VB2_WRITE; + voutdev->queue.buf_struct_size = sizeof(struct frame_buffer); + voutdev->queue.ops = &queue_ops; + voutdev->queue.mem_ops = &vb2_dma_sg_memops; + voutdev->queue.gfp_flags = GFP_DMA32; + voutdev->queue.timestamp_flags = V4L2_BUF_FLAG_TIMESTAMP_MONOTONIC; + voutdev->queue.min_buffers_needed = 2; + voutdev->queue.drv_priv = voutdev; + voutdev->queue.lock = &voutdev->lock; + voutdev->queue.dev = dev; + rv = vb2_queue_init(&voutdev->queue); + if (rv) { + dev_err(dev, "failed to initialize vb2 queue\n"); + goto err_v4l2_dev; + } + + snprintf(voutdev->vdev.name, sizeof(voutdev->vdev.name), "mgb4-out%d", id + 1); + voutdev->vdev.device_caps = V4L2_CAP_VIDEO_OUTPUT | V4L2_CAP_READWRITE + | V4L2_CAP_STREAMING; + voutdev->vdev.vfl_dir = VFL_DIR_TX; + voutdev->vdev.fops = &video_fops; + voutdev->vdev.ioctl_ops = &video_ioctl_ops; + voutdev->vdev.release = video_device_release_empty; + voutdev->vdev.v4l2_dev = &voutdev->v4l2dev; + voutdev->vdev.lock = &voutdev->lock; + voutdev->vdev.queue = &voutdev->queue; + video_set_drvdata(&voutdev->vdev, voutdev); + + rv = video_register_device(&voutdev->vdev, VFL_TYPE_VIDEO, -1); + if (rv) { + dev_err(dev, "failed to register video device\n"); + goto err_v4l2_dev; + } + + /* Serializer */ + rv = ser_init(voutdev, id); + if (rv) + goto err_video_dev; + + /* Set the FPGA registers default values */ + mgb4_mask_reg(video, voutdev->config->regs.config, 0xc, + (voutdev->config->id + MGB4_VIN_DEVICES) << 2); + mgb4_write_reg(video, voutdev->config->regs.resolution, + (DEFAULT_WIDTH << 16) | DEFAULT_HEIGHT); + mgb4_write_reg(video, voutdev->config->regs.frame_period, + DEFAULT_PERIOD); + + /* Module sysfs attributes */ + voutdev->alignment = 1; + module_attr = MGB4_IS_GMSL(mgbdev) + ? mgb4_gmsl_out_attrs : mgb4_fpdl3_out_attrs; + for (attr = module_attr; *attr; attr++) + device_create_file(&voutdev->vdev.dev, *attr); + + /* Set the output frequency according to the FPGA defaults */ + voutdev->freq = 70000; + + return voutdev; + +err_video_dev: + video_unregister_device(&voutdev->vdev); +err_v4l2_dev: + v4l2_device_unregister(&voutdev->v4l2dev); +err_irq: + free_irq(irq, voutdev); +err_alloc: + kfree(voutdev); + + return NULL; +} + +void mgb4_vout_free(struct mgb4_vout_dev *voutdev) +{ + struct device_attribute **attr, **module_attr; + int irq = xdma_get_user_irq(voutdev->mgbdev->xdev, voutdev->config->irq); + + free_irq(irq, voutdev); + + module_attr = MGB4_IS_GMSL(voutdev->mgbdev) + ? mgb4_gmsl_out_attrs : mgb4_fpdl3_out_attrs; + for (attr = module_attr; *attr; attr++) + device_remove_file(&voutdev->vdev.dev, *attr); + + mgb4_i2c_free(&voutdev->ser); + video_unregister_device(&voutdev->vdev); + v4l2_device_unregister(&voutdev->v4l2dev); + + kfree(voutdev); +} diff --git a/drivers/media/pci/mgb4/mgb4_vout.h b/drivers/media/pci/mgb4/mgb4_vout.h new file mode 100644 index 000000000000..d52676d37b04 --- /dev/null +++ b/drivers/media/pci/mgb4/mgb4_vout.h @@ -0,0 +1,58 @@ +/* SPDX-License-Identifier: GPL-2.0-only */ +/* + * Copyright (C) 2021-2022 Digiteq Automotive + * author: Martin Tuma + */ + +#ifndef __MGB4_VOUT_H__ +#define __MGB4_VOUT_H__ + +#include +#include +#include +#include +#include "mgb4_i2c.h" + +struct mgb4_vout_regs { + u32 address; + u32 config; + u32 status; + u32 resolution; + u32 frame_period; + u32 hsync; + u32 vsync; + u32 padding; +}; + +struct mgb4_vout_config { + int id; + int dma_channel; + int irq; + struct mgb4_vout_regs regs; +}; + +struct mgb4_vout_dev { + struct mgb4_dev *mgbdev; + struct v4l2_device v4l2dev; + struct video_device vdev; + struct vb2_queue queue; + struct mutex lock; /* vdev lock */ + + spinlock_t qlock; /* buffer queue lock */ + struct list_head buf_list; + struct work_struct dma_work; + + u32 width; + u32 height; + u32 freq; + u32 alignment; + + struct mgb4_i2c_client ser; + + const struct mgb4_vout_config *config; +}; + +struct mgb4_vout_dev *mgb4_vout_create(struct mgb4_dev *mgbdev, int id); +void mgb4_vout_free(struct mgb4_vout_dev *voutdev); + +#endif