From patchwork Mon Nov 6 08:33:59 2023 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Neil Armstrong X-Patchwork-Id: 161882 Return-Path: Delivered-To: ouuuleilei@gmail.com Received: by 2002:a59:8f47:0:b0:403:3b70:6f57 with SMTP id j7csp2515282vqu; Mon, 6 Nov 2023 00:34:42 -0800 (PST) X-Google-Smtp-Source: AGHT+IGGdpZwtFELD1DxWWxsNLdjr5tJIPPIXVed3ccJmQ6Vq3kDOvVfVVxBY0Tuc0mzKRKSU9ct X-Received: by 2002:a05:6358:6f8d:b0:16b:7049:e900 with SMTP id s13-20020a0563586f8d00b0016b7049e900mr334017rwn.5.1699259681887; Mon, 06 Nov 2023 00:34:41 -0800 (PST) ARC-Seal: i=1; a=rsa-sha256; t=1699259681; cv=none; d=google.com; s=arc-20160816; b=TCoyTrBDdyKQz94dx5MhxFDrHAw0sbUqzmlRe9JpCFy1HPFDNn1A9h3Isebl2L2TUn iNZ4Wvo+uVepBlqGIQJO7p1OyNd+jk8+WdP+xTY50mA25MqcZRo2o7C4mblzd2EytLR2 VUscPV/eVIuAqESeDCEE/k+JV+F4NA0N+vPxNU52gQHuJsFXs9fLeiG0hgxl6d681Kev zDnplxrnfQakorOPaZAbTtngeItgtLAAH5T07hjjBb28GruCvtJIXLPWQ1/0k+6PEQhH sZAbF6RlbPwggEOLzF2QB6uXUD5715pdKRKqMF825WIcBwe0eRADWYp7ltWfnERuYtOJ sqVA== ARC-Message-Signature: i=1; a=rsa-sha256; c=relaxed/relaxed; d=google.com; s=arc-20160816; h=list-id:precedence:cc:to:in-reply-to:references:message-id :content-transfer-encoding:mime-version:subject:date:from :dkim-signature; bh=OxnVNSfczT25XAfpC4X+ICgFqABO9v8W+zLZSFvXeiM=; fh=q4FJCsEhN5Gy3tvvDiDTMENUYU/ue0iHHb8V1mHEuq0=; b=hLNnBUv1nE/fylOwcAPaqhW7UERJV6dZ4maMCuMIXTTG25GWoGB2JHztcqQ0w/nOYa h5zbKjyj2HsVDKTH8Ap55P0axpa4itHy+D3ZMqY0f7S5qLbtTsdaHp4Gr6/vKn/Ggq16 /PGerGcNG1adE8XOF1XGbJjPBs7fhKgv9hqwVLbBOkAx/c0zDUjSbIlkiL9L5ivLOOKx 17k1c0ud4A69KmF2zhMb/j/c9cdWtNdbYEgSF3efRuF9B2doPUOUbfJujb/QntU4ZQ9p TU1zc9545g5SOkrey+89JAuGqs9nxhUWCdOoYA1NjNI+6L8L28+XW2xn7QQvSKUyhMlG rpTw== ARC-Authentication-Results: i=1; mx.google.com; dkim=pass header.i=@linaro.org header.s=google header.b=l0dOYpJg; spf=pass (google.com: domain of linux-kernel-owner@vger.kernel.org designates 2620:137:e000::3:7 as permitted sender) smtp.mailfrom=linux-kernel-owner@vger.kernel.org; dmarc=pass (p=NONE sp=NONE dis=NONE) header.from=linaro.org Received: from snail.vger.email (snail.vger.email. [2620:137:e000::3:7]) by mx.google.com with ESMTPS id s21-20020a632c15000000b005b92ab9ce80si7368926pgs.460.2023.11.06.00.34.41 (version=TLS1_3 cipher=TLS_AES_256_GCM_SHA384 bits=256/256); Mon, 06 Nov 2023 00:34:41 -0800 (PST) Received-SPF: pass (google.com: domain of linux-kernel-owner@vger.kernel.org designates 2620:137:e000::3:7 as permitted sender) client-ip=2620:137:e000::3:7; Authentication-Results: mx.google.com; dkim=pass header.i=@linaro.org header.s=google header.b=l0dOYpJg; spf=pass (google.com: domain of linux-kernel-owner@vger.kernel.org designates 2620:137:e000::3:7 as permitted sender) smtp.mailfrom=linux-kernel-owner@vger.kernel.org; dmarc=pass (p=NONE sp=NONE dis=NONE) header.from=linaro.org Received: from out1.vger.email (depot.vger.email [IPv6:2620:137:e000::3:0]) by snail.vger.email (Postfix) with ESMTP id E6B35802C8F4; Mon, 6 Nov 2023 00:34:40 -0800 (PST) X-Virus-Status: Clean X-Virus-Scanned: clamav-milter 0.103.10 at snail.vger.email Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S231426AbjKFIe0 (ORCPT + 35 others); Mon, 6 Nov 2023 03:34:26 -0500 Received: from lindbergh.monkeyblade.net ([23.128.96.19]:51978 "EHLO lindbergh.monkeyblade.net" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S231388AbjKFIeK (ORCPT ); Mon, 6 Nov 2023 03:34:10 -0500 Received: from mail-ed1-x534.google.com (mail-ed1-x534.google.com [IPv6:2a00:1450:4864:20::534]) by lindbergh.monkeyblade.net (Postfix) with ESMTPS id A66A2D8 for ; Mon, 6 Nov 2023 00:34:05 -0800 (PST) Received: by mail-ed1-x534.google.com with SMTP id 4fb4d7f45d1cf-53e08e439c7so7085354a12.0 for ; Mon, 06 Nov 2023 00:34:05 -0800 (PST) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=linaro.org; s=google; t=1699259644; x=1699864444; darn=vger.kernel.org; h=cc:to:in-reply-to:references:message-id:content-transfer-encoding :mime-version:subject:date:from:from:to:cc:subject:date:message-id :reply-to; bh=OxnVNSfczT25XAfpC4X+ICgFqABO9v8W+zLZSFvXeiM=; b=l0dOYpJgyr7MpCXzr2PK6914ol0WKBP1Cy/zYU+e9rVir5zByr9LbyZI/386Ymvbpq +z/XKMbaNvb2veItYy5PITAPWdvhgwMuCmjXJuSSCihqessoY7V2aWRFrfP+mtCCBRlP MtvxQIbbKmXATVh5k06Tb1XYq+qYIK2gdKam0NogoE0EkRtvBYCjdtIlRBnd02hiZP5B QAyg7wT/u5zPInlPhXVaXvmo+NWgd7VMDy2gq72Dl6qGcWYLf8ZR0gH0WpHUc8c8c/Qn qbf+0fsJ0yjjrEmlziX6TyAe8akc4OKFEebLEn76xMHV8T/9r68EpoO4ec7vwuqoR/Cy 1DJw== X-Google-DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=1e100.net; s=20230601; t=1699259644; x=1699864444; h=cc:to:in-reply-to:references:message-id:content-transfer-encoding :mime-version:subject:date:from:x-gm-message-state:from:to:cc :subject:date:message-id:reply-to; bh=OxnVNSfczT25XAfpC4X+ICgFqABO9v8W+zLZSFvXeiM=; b=CGYsQd8ohvOzrmJ/uUsSxSR6ero3So2eTw8zqrAvvVSiiNLaopi3JZt8JNaTra0uQQ IyM2WO5SvifRS0Zluxe/HCbrmoV8GRP13BZfMoKlcp7A3ueRpTH9pUYyxEy/hdjVfBXO qDD4kEFcCP+oi6b4Si+XweN4l31U70vsaBB9EsmJ7qIydqq9GocRFlVTPxQ/ZE+1CreY Bow0rNP/4das1JsyzDM0zRKuAp9LW8wlg6KxlqoFIR3DELuLtqB4ohdyEIQYZTmUthT4 Jgg5IX+klDm8Q1RfHsf83RFXED6yQQkfOM3jugnXzzONdE8RZZigx7GAHtG34KEAM8B5 qk8A== X-Gm-Message-State: AOJu0Yw5OiBuUrRHSiSOihg3qaU6te8s7cZS9ZFyPoo2ettEhJHE/x5N zCok23vrBY+h1N1m0aTlRdgb9g== X-Received: by 2002:a17:907:26c5:b0:9e0:2319:16dc with SMTP id bp5-20020a17090726c500b009e0231916dcmr2466244ejc.73.1699259644042; Mon, 06 Nov 2023 00:34:04 -0800 (PST) Received: from arrakeen.starnux.net ([2a01:e0a:982:cbb0:52eb:f6ff:feb3:451a]) by smtp.gmail.com with ESMTPSA id q24-20020a7bce98000000b0040648217f4fsm11132991wmj.39.2023.11.06.00.34.03 (version=TLS1_3 cipher=TLS_AES_256_GCM_SHA384 bits=256/256); Mon, 06 Nov 2023 00:34:03 -0800 (PST) From: Neil Armstrong Date: Mon, 06 Nov 2023 09:33:59 +0100 Subject: [PATCH v11 4/4] Input: goodix-berlin - add SPI support for Goodix Berlin Touchscreen IC MIME-Version: 1.0 Message-Id: <20231106-topic-goodix-berlin-upstream-initial-v11-4-5c47e9707c03@linaro.org> References: <20231106-topic-goodix-berlin-upstream-initial-v11-0-5c47e9707c03@linaro.org> In-Reply-To: <20231106-topic-goodix-berlin-upstream-initial-v11-0-5c47e9707c03@linaro.org> To: Dmitry Torokhov , linux-input@vger.kernel.org Cc: Rob Herring , Krzysztof Kozlowski , Conor Dooley , Bastien Nocera , Hans de Goede , Henrik Rydberg , Jeff LaBundy , linux-arm-msm@vger.kernel.org, devicetree@vger.kernel.org, linux-kernel@vger.kernel.org, Neil Armstrong X-Mailer: b4 0.12.3 X-Developer-Signature: v=1; a=openpgp-sha256; l=8067; i=neil.armstrong@linaro.org; h=from:subject:message-id; bh=IRI86qOlgcP+lY+pewvMbMLCeQCDU17m1zaFOv0kod4=; b=owEBbQKS/ZANAwAKAXfc29rIyEnRAcsmYgBlSKT2L/YIoIVQCfo/epBR8EfFUB+oHqLAeES4nTBl rRb/Y/6JAjMEAAEKAB0WIQQ9U8YmyFYF/h30LIt33NvayMhJ0QUCZUik9gAKCRB33NvayMhJ0WU9EA CD+XjwmhLu0Bi0k3zqpiosQTJr5WVPxuvvJiPf8pBfYKm0hi5Ae6gclEWUBkeY1hkMMzJQ53+p6/O0 zNZ+bSX0e4RzSm0OcnCny33ueKV0+RomM8fikoJOW+JzRvYEmtwhrsRESWxLJbFIEr0ffh2MIJBsrP kWgHif1sDgdV+LjNWCHqaOvgpXi4MbEktlemUiGnx6BFmGMhuZi03NezTDImfLRgSYBv6g/H8PoEZW UajOM7EsK2OvW0hoadwLd8YVnJlPMu/Y3S9SPK0VvvZLV5pbo7mdXXgSDDAOyZKkFKIEk6FC7bvWOm GnvrRB1iPjj1589U4laOmL7x7HYkcPxWk3llxSDguA/oZrTOUTS5OYa1ZqMq8Mb9drdKmqTLfoDo3i gfL8FshdQl0MHwAgMi2AGXS+9TWTKYcz+RoEBzQlrvFRSoj5J2n4G/TDiMSE2v3/+GmIIqzRgY39LI LdcrKfNuRrSU+EUIiOJj9IkoffJq5zszATkR5zjIvcjNBpy+CYh9M+VbQErRusIubG+6IBb+VDHR4y Z/5zJFA+gfoXKGiWlYy/zR6KHkYanSzahg0SYu8l4ds09JWhA98nqTzRdT4+Uk+zhbEsPoBb68d8vB QMqhW9GiUWdgrs8SI/cnxgV2R309tltlNnTYwJahqjgJJOvU5XzpYOk4ey4Q== X-Developer-Key: i=neil.armstrong@linaro.org; a=openpgp; fpr=89EC3D058446217450F22848169AB7B1A4CFF8AE X-Spam-Status: No, score=-2.1 required=5.0 tests=BAYES_00,DKIM_SIGNED, DKIM_VALID,DKIM_VALID_AU,DKIM_VALID_EF,RCVD_IN_DNSWL_BLOCKED, SPF_HELO_NONE,SPF_PASS,T_SCC_BODY_TEXT_LINE autolearn=unavailable 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-Greylist: Sender passed SPF test, not delayed by milter-greylist-4.6.4 (snail.vger.email [0.0.0.0]); Mon, 06 Nov 2023 00:34:41 -0800 (PST) X-getmail-retrieved-from-mailbox: INBOX X-GMAIL-THRID: 1781802920559654158 X-GMAIL-MSGID: 1781802920559654158 Add initial support for the new Goodix "Berlin" touchscreen ICs over the SPI interface. The driver doesn't use the regmap_spi code since the SPI messages needs to be prefixed, thus this custom regmap code. This initial driver is derived from the Goodix goodix_ts_berlin available at [1] and [2] and only supports the GT9916 IC present on the Qualcomm SM8550 MTP & QRD touch panel. The current implementation only supports BerlinD, aka GT9916. [1] https://github.com/goodix/goodix_ts_berlin [2] https://git.codelinaro.org/clo/la/platform/vendor/opensource/touch-drivers Reviewed-by: Jeff LaBundy Signed-off-by: Neil Armstrong --- drivers/input/touchscreen/Kconfig | 14 ++ drivers/input/touchscreen/Makefile | 1 + drivers/input/touchscreen/goodix_berlin_spi.c | 177 ++++++++++++++++++++++++++ 3 files changed, 192 insertions(+) diff --git a/drivers/input/touchscreen/Kconfig b/drivers/input/touchscreen/Kconfig index cc7b88118158..c821fe3ee794 100644 --- a/drivers/input/touchscreen/Kconfig +++ b/drivers/input/touchscreen/Kconfig @@ -433,6 +433,20 @@ config TOUCHSCREEN_GOODIX_BERLIN_I2C To compile this driver as a module, choose M here: the module will be called goodix_berlin_i2c. +config TOUCHSCREEN_GOODIX_BERLIN_SPI + tristate "Goodix Berlin SPI touchscreen" + depends on SPI_MASTER + select REGMAP + select TOUCHSCREEN_GOODIX_BERLIN_CORE + help + Say Y here if you have a Goodix Berlin IC connected to + your system via SPI. + + If unsure, say N. + + To compile this driver as a module, choose M here: the + module will be called goodix_berlin_spi. + config TOUCHSCREEN_HIDEEP tristate "HiDeep Touch IC" depends on I2C diff --git a/drivers/input/touchscreen/Makefile b/drivers/input/touchscreen/Makefile index 7ef677cf7a10..a81cb5aa21a5 100644 --- a/drivers/input/touchscreen/Makefile +++ b/drivers/input/touchscreen/Makefile @@ -49,6 +49,7 @@ obj-$(CONFIG_TOUCHSCREEN_FUJITSU) += fujitsu_ts.o obj-$(CONFIG_TOUCHSCREEN_GOODIX) += goodix_ts.o obj-$(CONFIG_TOUCHSCREEN_GOODIX_BERLIN_CORE) += goodix_berlin_core.o obj-$(CONFIG_TOUCHSCREEN_GOODIX_BERLIN_I2C) += goodix_berlin_i2c.o +obj-$(CONFIG_TOUCHSCREEN_GOODIX_BERLIN_SPI) += goodix_berlin_spi.o obj-$(CONFIG_TOUCHSCREEN_HIDEEP) += hideep.o obj-$(CONFIG_TOUCHSCREEN_HYNITRON_CSTXXX) += hynitron_cstxxx.o obj-$(CONFIG_TOUCHSCREEN_ILI210X) += ili210x.o diff --git a/drivers/input/touchscreen/goodix_berlin_spi.c b/drivers/input/touchscreen/goodix_berlin_spi.c new file mode 100644 index 000000000000..502b143e9e05 --- /dev/null +++ b/drivers/input/touchscreen/goodix_berlin_spi.c @@ -0,0 +1,177 @@ +// SPDX-License-Identifier: GPL-2.0-or-later +/* + * Goodix Berlin Touchscreen Driver + * + * Copyright (C) 2020 - 2021 Goodix, Inc. + * Copyright (C) 2023 Linaro Ltd. + * + * Based on goodix_ts_berlin driver. + */ +#include +#include +#include +#include +#include + +#include "goodix_berlin.h" + +#define GOODIX_BERLIN_SPI_TRANS_PREFIX_LEN 1 +#define GOODIX_BERLIN_REGISTER_WIDTH 4 +#define GOODIX_BERLIN_SPI_READ_DUMMY_LEN 3 +#define GOODIX_BERLIN_SPI_READ_PREFIX_LEN (GOODIX_BERLIN_SPI_TRANS_PREFIX_LEN + \ + GOODIX_BERLIN_REGISTER_WIDTH + \ + GOODIX_BERLIN_SPI_READ_DUMMY_LEN) +#define GOODIX_BERLIN_SPI_WRITE_PREFIX_LEN (GOODIX_BERLIN_SPI_TRANS_PREFIX_LEN + \ + GOODIX_BERLIN_REGISTER_WIDTH) + +#define GOODIX_BERLIN_SPI_WRITE_FLAG 0xF0 +#define GOODIX_BERLIN_SPI_READ_FLAG 0xF1 + +static int goodix_berlin_spi_read(void *context, const void *reg_buf, + size_t reg_size, void *val_buf, + size_t val_size) +{ + struct spi_device *spi = context; + struct spi_transfer xfers; + struct spi_message spi_msg; + const u32 *reg = reg_buf; /* reg is stored as native u32 at start of buffer */ + u8 *buf; + int error; + + if (reg_size != GOODIX_BERLIN_REGISTER_WIDTH) + return -EINVAL; + + buf = kzalloc(GOODIX_BERLIN_SPI_READ_PREFIX_LEN + val_size, GFP_KERNEL); + if (!buf) + return -ENOMEM; + + spi_message_init(&spi_msg); + memset(&xfers, 0, sizeof(xfers)); + + /* buffer format: 0xF1 + addr(4bytes) + dummy(3bytes) + data */ + buf[0] = GOODIX_BERLIN_SPI_READ_FLAG; + put_unaligned_be32(*reg, buf + GOODIX_BERLIN_SPI_TRANS_PREFIX_LEN); + memset(buf + GOODIX_BERLIN_SPI_TRANS_PREFIX_LEN + GOODIX_BERLIN_REGISTER_WIDTH, + 0xff, GOODIX_BERLIN_SPI_READ_DUMMY_LEN); + + xfers.tx_buf = buf; + xfers.rx_buf = buf; + xfers.len = GOODIX_BERLIN_SPI_READ_PREFIX_LEN + val_size; + xfers.cs_change = 0; + spi_message_add_tail(&xfers, &spi_msg); + + error = spi_sync(spi, &spi_msg); + if (error < 0) + dev_err(&spi->dev, "spi transfer error, %d", error); + else + memcpy(val_buf, buf + GOODIX_BERLIN_SPI_READ_PREFIX_LEN, val_size); + + kfree(buf); + return error; +} + +static int goodix_berlin_spi_write(void *context, const void *data, + size_t count) +{ + unsigned int len = count - GOODIX_BERLIN_REGISTER_WIDTH; + struct spi_device *spi = context; + struct spi_transfer xfers; + struct spi_message spi_msg; + const u32 *reg = data; /* reg is stored as native u32 at start of buffer */ + u8 *buf; + int error; + + buf = kzalloc(GOODIX_BERLIN_SPI_WRITE_PREFIX_LEN + len, GFP_KERNEL); + if (!buf) + return -ENOMEM; + + spi_message_init(&spi_msg); + memset(&xfers, 0, sizeof(xfers)); + + buf[0] = GOODIX_BERLIN_SPI_WRITE_FLAG; + put_unaligned_be32(*reg, buf + GOODIX_BERLIN_SPI_TRANS_PREFIX_LEN); + memcpy(buf + GOODIX_BERLIN_SPI_WRITE_PREFIX_LEN, + data + GOODIX_BERLIN_REGISTER_WIDTH, len); + + xfers.tx_buf = buf; + xfers.len = GOODIX_BERLIN_SPI_WRITE_PREFIX_LEN + len; + xfers.cs_change = 0; + spi_message_add_tail(&xfers, &spi_msg); + + error = spi_sync(spi, &spi_msg); + if (error < 0) + dev_err(&spi->dev, "spi transfer error, %d", error); + + kfree(buf); + return error; +} + +static const struct regmap_config goodix_berlin_spi_regmap_conf = { + .reg_bits = 32, + .val_bits = 8, + .read = goodix_berlin_spi_read, + .write = goodix_berlin_spi_write, +}; + +/* vendor & product left unassigned here, should probably be updated from fw info */ +static const struct input_id goodix_berlin_spi_input_id = { + .bustype = BUS_SPI, +}; + +static int goodix_berlin_spi_probe(struct spi_device *spi) +{ + struct regmap_config regmap_config; + struct regmap *regmap; + size_t max_size; + int error = 0; + + spi->mode = SPI_MODE_0; + spi->bits_per_word = 8; + error = spi_setup(spi); + if (error) + return error; + + max_size = spi_max_transfer_size(spi); + + regmap_config = goodix_berlin_spi_regmap_conf; + regmap_config.max_raw_read = max_size - GOODIX_BERLIN_SPI_READ_PREFIX_LEN; + regmap_config.max_raw_write = max_size - GOODIX_BERLIN_SPI_WRITE_PREFIX_LEN; + + regmap = devm_regmap_init(&spi->dev, NULL, spi, ®map_config); + if (IS_ERR(regmap)) + return PTR_ERR(regmap); + + error = goodix_berlin_probe(&spi->dev, spi->irq, + &goodix_berlin_spi_input_id, regmap); + if (error) + return error; + + return 0; +} + +static const struct spi_device_id goodix_berlin_spi_ids[] = { + { "gt9916" }, + { }, +}; +MODULE_DEVICE_TABLE(spi, goodix_berlin_spi_ids); + +static const struct of_device_id goodix_berlin_spi_of_match[] = { + { .compatible = "goodix,gt9916", }, + { } +}; +MODULE_DEVICE_TABLE(of, goodix_berlin_spi_of_match); + +static struct spi_driver goodix_berlin_spi_driver = { + .driver = { + .name = "goodix-berlin-spi", + .of_match_table = goodix_berlin_spi_of_match, + .pm = pm_sleep_ptr(&goodix_berlin_pm_ops), + }, + .probe = goodix_berlin_spi_probe, + .id_table = goodix_berlin_spi_ids, +}; +module_spi_driver(goodix_berlin_spi_driver); + +MODULE_LICENSE("GPL"); +MODULE_DESCRIPTION("Goodix Berlin SPI Touchscreen driver"); +MODULE_AUTHOR("Neil Armstrong ");