From patchwork Tue Nov 28 12:40:58 2023 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Petre Rodan X-Patchwork-Id: 170746 Return-Path: Delivered-To: ouuuleilei@gmail.com Received: by 2002:a59:ce62:0:b0:403:3b70:6f57 with SMTP id o2csp3886676vqx; Tue, 28 Nov 2023 04:42:45 -0800 (PST) X-Google-Smtp-Source: AGHT+IGkij51WOiuXSpv14tzv1dYT1atyyrGCECaOepUtk0MX/lzAiDm9JPyYym3w5dm+Iw2H810 X-Received: by 2002:a17:902:ea05:b0:1cf:a70b:39cd with SMTP id s5-20020a170902ea0500b001cfa70b39cdmr16853604plg.39.1701175365162; Tue, 28 Nov 2023 04:42:45 -0800 (PST) ARC-Seal: i=1; a=rsa-sha256; t=1701175365; cv=none; d=google.com; s=arc-20160816; b=WGuMx26SZHV9D32jWzFHWRGPVUtXqJy/cLlskw5ZaEFA6hnpGhfCBy9gfp5Hc06jgH asQZFautUNHD9po4Eb5CcDNyVkpA6JVurD5g/eIP0/e+VranL76OXm//a7IB5T7sovGz b703GB0JBxvjtFF/HO3GXVMk4ZrTjvLC6bgg5zuOmrFFBw6NgZwiSKYdLGC+UlV4NFAE 0PqGPoXd+Y+wrLUdwelcozjZN5pcdI9yGhJN7NPDy1OCUgwC3Q4Yp7OaAPz9/3GU3f76 K6Q4DrvK19Qkffed9pXajzr33S9umUes/w4g0RHq/ar14RneprK/5BKMUiAEfOS6Yzmj vbEg== 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 :message-id:date:subject:cc:to:from:dkim-signature; bh=tI9CJ3pab4vacqVVObaO2hHC/gPzaiKu1MQiy2Yuc8E=; fh=AMGqaeuH393VCvUVVEty986tGPORpaQpYEyp7am59Yo=; b=s4EZxVOI/TeCmxVkejuRuyTxsXnm6EBleCcwI4IS4ScGTmPiN+XTNIAsvFazeErsV5 0zmjWXVHawv5RPFYg/t/o9nBYAUx3L2ao84RaKPmWYXZOKNSiqyXxNUVtriryykGkG8p kY1nECHWCT4250Rg0wlLZC0Uuajllsue0n4kytTO9RWpkGFUP+hJic8FNSqLVEOmQnYB c0WH0v2quJtQi2O96LomURElNeiTPGWExMJ3Po0r5ZjLT4nH4RBSd3I/CuqCSJiuXHQi qVJMe7hw6mNhzmXPk+kUzo8Lpih/TbGCzKlIGckdwBMlwT2DusdD2W9PeXZQ0uzu7pj2 xebg== ARC-Authentication-Results: i=1; mx.google.com; dkim=pass header.i=@subdimension.ro header.s=skycaves header.b="mUGe7O/G"; spf=pass (google.com: domain of linux-kernel-owner@vger.kernel.org designates 23.128.96.37 as permitted sender) smtp.mailfrom=linux-kernel-owner@vger.kernel.org; dmarc=pass (p=NONE sp=NONE dis=NONE) header.from=subdimension.ro Received: from snail.vger.email (snail.vger.email. [23.128.96.37]) by mx.google.com with ESMTPS id iz13-20020a170902ef8d00b001cf68d9d2b4si11345790plb.554.2023.11.28.04.42.44 (version=TLS1_3 cipher=TLS_AES_256_GCM_SHA384 bits=256/256); Tue, 28 Nov 2023 04:42:45 -0800 (PST) Received-SPF: pass (google.com: domain of linux-kernel-owner@vger.kernel.org designates 23.128.96.37 as permitted sender) client-ip=23.128.96.37; Authentication-Results: mx.google.com; dkim=pass header.i=@subdimension.ro header.s=skycaves header.b="mUGe7O/G"; spf=pass (google.com: domain of linux-kernel-owner@vger.kernel.org designates 23.128.96.37 as permitted sender) smtp.mailfrom=linux-kernel-owner@vger.kernel.org; dmarc=pass (p=NONE sp=NONE dis=NONE) header.from=subdimension.ro Received: from out1.vger.email (depot.vger.email [IPv6:2620:137:e000::3:0]) by snail.vger.email (Postfix) with ESMTP id 1594F80AB1ED; Tue, 28 Nov 2023 04:41:21 -0800 (PST) X-Virus-Status: Clean X-Virus-Scanned: clamav-milter 0.103.11 at snail.vger.email Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S234810AbjK1MlH (ORCPT + 99 others); Tue, 28 Nov 2023 07:41:07 -0500 Received: from lindbergh.monkeyblade.net ([23.128.96.19]:39634 "EHLO lindbergh.monkeyblade.net" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S234779AbjK1MlD (ORCPT ); Tue, 28 Nov 2023 07:41:03 -0500 Received: from mail.subdimension.ro (skycaves.subdimension.ro [172.104.132.142]) by lindbergh.monkeyblade.net (Postfix) with ESMTPS id 58BE49D; Tue, 28 Nov 2023 04:41:07 -0800 (PST) Received: from localhost.localdomain (unknown [188.24.94.216]) (using TLSv1.3 with cipher TLS_AES_256_GCM_SHA384 (256/256 bits) key-exchange X25519 server-signature RSA-PSS (4096 bits) server-digest SHA256) (Client did not present a certificate) by mail.subdimension.ro (Postfix) with ESMTPSA id A57A128F040; Tue, 28 Nov 2023 12:41:05 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=subdimension.ro; s=skycaves; t=1701175265; bh=NYB9f1yc+sAY60odA54bSDEnUMFjFdjvsmCZl7Xz/HE=; h=From:To:Cc:Subject:Date; b=mUGe7O/G8E3rHS07ZuvpF+RXcxLtFwHi3CkN22ildwtPbDHvD/S5kcOY+5FQLBsZk lkY3ep/RlnnQ3W4xOw7jFn7L+8xHuQ6vZmz1lXoJFEt6seNdo/T3M4F/yXuqhMZYab 6bWu7e3oogHkf0iS2fid7sorvonlEMntrMJW46i4= From: Petre Rodan To: linux-kernel@vger.kernel.org, linux-iio@vger.kernel.org Cc: Petre Rodan , Jonathan Cameron , Lars-Peter Clausen , Andy Shevchenko , Angel Iglesias , Matti Vaittinen , Andreas Klinger , Rob Herring , Krzysztof Kozlowski Subject: [PATCH v4 2/2] iio: pressure: driver for Honeywell HSC/SSC series pressure sensors Date: Tue, 28 Nov 2023 14:40:58 +0200 Message-ID: <20231128124103.22765-1-petre.rodan@subdimension.ro> X-Mailer: git-send-email 2.41.0 MIME-Version: 1.0 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=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-Greylist: Sender passed SPF test, not delayed by milter-greylist-4.6.4 (snail.vger.email [0.0.0.0]); Tue, 28 Nov 2023 04:41:21 -0800 (PST) X-getmail-retrieved-from-mailbox: INBOX X-GMAIL-THRID: 1783811659802869005 X-GMAIL-MSGID: 1783811659802869005 Adds driver for digital Honeywell TruStability HSC and SSC series pressure and temperature sensors. Communication is one way. The sensor only requires 4 bytes worth of clock pulses on both i2c and spi in order to push the data out. The i2c address is hardcoded and depends on the part number. There is no additional GPIO control. Datasheet: https://prod-edam.honeywell.com/content/dam/honeywell-edam/sps/siot/en-us/products/sensors/pressure-sensors/board-mount-pressure-sensors/trustability-hsc-series/documents/sps-siot-trustability-hsc-series-high-accuracy-board-mount-pressure-sensors-50099148-a-en-ciid-151133.pdf [HSC] Datasheet: https://prod-edam.honeywell.com/content/dam/honeywell-edam/sps/siot/en-us/products/sensors/pressure-sensors/board-mount-pressure-sensors/trustability-ssc-series/documents/sps-siot-trustability-ssc-series-standard-accuracy-board-mount-pressure-sensors-50099533-a-en-ciid-151134.pdf [SSC] Signed-off-by: Petre Rodan --- V2: - No change V3: huge cleanup based on Andy's review. Thanks! - fixed pressure offset calculation for differential sensors - rename driver from honeywell,hsc to honeywell,hsc030pa - main probe() now uses strncmp for case-insensitive mathing can't use match_string() because I ain't planning on splitting the hsc_range_config struct. V4: modifications based on Jonathan Cameron's review. Thanks! - rename hsc_*_xfer() to hsc_*_recv() - struct style changes - bus driver only contains bus specific bits and bobs - add alignment for SPI buffer --- MAINTAINERS | 7 + drivers/iio/pressure/Kconfig | 22 ++ drivers/iio/pressure/Makefile | 3 + drivers/iio/pressure/hsc030pa.c | 437 ++++++++++++++++++++++++++++ drivers/iio/pressure/hsc030pa.h | 79 +++++ drivers/iio/pressure/hsc030pa_i2c.c | 69 +++++ drivers/iio/pressure/hsc030pa_spi.c | 60 ++++ 7 files changed, 677 insertions(+) create mode 100644 drivers/iio/pressure/hsc030pa.c create mode 100644 drivers/iio/pressure/hsc030pa.h create mode 100644 drivers/iio/pressure/hsc030pa_i2c.c create mode 100644 drivers/iio/pressure/hsc030pa_spi.c diff --git a/MAINTAINERS b/MAINTAINERS index 509281e9e169..3ee65cda2d72 100644 --- a/MAINTAINERS +++ b/MAINTAINERS @@ -9702,6 +9702,13 @@ F: lib/test_hmm* F: mm/hmm* F: tools/testing/selftests/mm/*hmm* +HONEYWELL HSC030PA PRESSURE SENSOR SERIES IIO DRIVER +M: Petre Rodan +L: linux-iio@vger.kernel.org +S: Maintained +F: Documentation/devicetree/bindings/iio/pressure/honeywell,hsc030pa.yaml +F: drivers/iio/pressure/hsc030pa* + HONEYWELL MPRLS0025PA PRESSURE SENSOR SERIES IIO DRIVER M: Andreas Klinger L: linux-iio@vger.kernel.org diff --git a/drivers/iio/pressure/Kconfig b/drivers/iio/pressure/Kconfig index 95efa32e4289..79adfd059c3a 100644 --- a/drivers/iio/pressure/Kconfig +++ b/drivers/iio/pressure/Kconfig @@ -109,6 +109,28 @@ config HP03 To compile this driver as a module, choose M here: the module will be called hp03. +config HSC030PA + tristate "Honeywell HSC/SSC TruStability pressure sensor series" + depends on (I2C || SPI_MASTER) + select HSC030PA_I2C if I2C + select HSC030PA_SPI if SPI_MASTER + help + Say Y here to build support for the Honeywell TruStability + HSC and SSC pressure and temperature sensor series. + + To compile this driver as a module, choose M here: the module + will be called hsc030pa. + +config HSC030PA_I2C + tristate + depends on HSC030PA + depends on I2C + +config HSC030PA_SPI + tristate + depends on HSC030PA + depends on SPI_MASTER + config ICP10100 tristate "InvenSense ICP-101xx pressure and temperature sensor" depends on I2C diff --git a/drivers/iio/pressure/Makefile b/drivers/iio/pressure/Makefile index 436aec7e65f3..b0f8b94662f2 100644 --- a/drivers/iio/pressure/Makefile +++ b/drivers/iio/pressure/Makefile @@ -15,6 +15,9 @@ obj-$(CONFIG_DPS310) += dps310.o obj-$(CONFIG_IIO_CROS_EC_BARO) += cros_ec_baro.o obj-$(CONFIG_HID_SENSOR_PRESS) += hid-sensor-press.o obj-$(CONFIG_HP03) += hp03.o +obj-$(CONFIG_HSC030PA) += hsc030pa.o +obj-$(CONFIG_HSC030PA_I2C) += hsc030pa_i2c.o +obj-$(CONFIG_HSC030PA_SPI) += hsc030pa_spi.o obj-$(CONFIG_ICP10100) += icp10100.o obj-$(CONFIG_MPL115) += mpl115.o obj-$(CONFIG_MPL115_I2C) += mpl115_i2c.o diff --git a/drivers/iio/pressure/hsc030pa.c b/drivers/iio/pressure/hsc030pa.c new file mode 100644 index 000000000000..1ce4c496cd2e --- /dev/null +++ b/drivers/iio/pressure/hsc030pa.c @@ -0,0 +1,437 @@ +// SPDX-License-Identifier: GPL-2.0-only +/* + * Honeywell TruStability HSC Series pressure/temperature sensor + * + * Copyright (c) 2023 Petre Rodan + * + * Datasheet: https://prod-edam.honeywell.com/content/dam/honeywell-edam/sps/siot/en-us/products/sensors/pressure-sensors/board-mount-pressure-sensors/trustability-hsc-series/documents/sps-siot-trustability-hsc-series-high-accuracy-board-mount-pressure-sensors-50099148-a-en-ciid-151133.pdf + */ + +#include +#include +#include +#include +#include +#include +#include +#include +#include +#include +#include +#include +#include +#include + +#include +#include + +#include + +#include "hsc030pa.h" + +/* + * HSC_PRESSURE_TRIPLET_LEN - length for the string that defines the + * pressure range, measurement unit and type as per the part nomenclature. + * Consult honeywell,pressure-triplet in the bindings file for details. + */ +#define HSC_PRESSURE_TRIPLET_LEN 6 +#define HSC_STATUS_MASK GENMASK(7, 6) +#define HSC_TEMPERATURE_MASK GENMASK(15, 5) +#define HSC_PRESSURE_MASK GENMASK(29, 16) + +struct hsc_func_spec { + u32 output_min; + u32 output_max; +}; + +/* + * function A: 10% - 90% of 2^14 + * function B: 5% - 95% of 2^14 + * function C: 5% - 85% of 2^14 + * function F: 4% - 94% of 2^14 + */ +static const struct hsc_func_spec hsc_func_spec[] = { + [HSC_FUNCTION_A] = { .output_min = 1638, .output_max = 14746 }, + [HSC_FUNCTION_B] = { .output_min = 819, .output_max = 15565 }, + [HSC_FUNCTION_C] = { .output_min = 819, .output_max = 13926 }, + [HSC_FUNCTION_F] = { .output_min = 655, .output_max = 15401 }, +}; + +/** + * struct hsc_range_config - list of pressure ranges based on nomenclature + * @triplet: string that defines the range, measurement unit and type + * @pmin: lowest pressure that can be measured + * @pmax: highest pressure that can be measured + */ +struct hsc_range_config { + char triplet[HSC_PRESSURE_TRIPLET_LEN]; + s32 pmin; + u32 pmax; +}; + +/* all min max limits have been converted to pascals */ +static const struct hsc_range_config hsc_range_config[] = { + { .triplet = "001BA", .pmin = 0, .pmax = 100000 }, + { .triplet = "1.6BA", .pmin = 0, .pmax = 160000 }, + { .triplet = "2.5BA", .pmin = 0, .pmax = 250000 }, + { .triplet = "004BA", .pmin = 0, .pmax = 400000 }, + { .triplet = "006BA", .pmin = 0, .pmax = 600000 }, + { .triplet = "010BA", .pmin = 0, .pmax = 1000000 }, + { .triplet = "1.6MD", .pmin = -160, .pmax = 160 }, + { .triplet = "2.5MD", .pmin = -250, .pmax = 250 }, + { .triplet = "004MD", .pmin = -400, .pmax = 400 }, + { .triplet = "006MD", .pmin = -600, .pmax = 600 }, + { .triplet = "010MD", .pmin = -1000, .pmax = 1000 }, + { .triplet = "016MD", .pmin = -1600, .pmax = 1600 }, + { .triplet = "025MD", .pmin = -2500, .pmax = 2500 }, + { .triplet = "040MD", .pmin = -4000, .pmax = 4000 }, + { .triplet = "060MD", .pmin = -6000, .pmax = 6000 }, + { .triplet = "100MD", .pmin = -10000, .pmax = 10000 }, + { .triplet = "160MD", .pmin = -16000, .pmax = 16000 }, + { .triplet = "250MD", .pmin = -25000, .pmax = 25000 }, + { .triplet = "400MD", .pmin = -40000, .pmax = 40000 }, + { .triplet = "600MD", .pmin = -60000, .pmax = 60000 }, + { .triplet = "001BD", .pmin = -100000, .pmax = 100000 }, + { .triplet = "1.6BD", .pmin = -160000, .pmax = 160000 }, + { .triplet = "2.5BD", .pmin = -250000, .pmax = 250000 }, + { .triplet = "004BD", .pmin = -400000, .pmax = 400000 }, + { .triplet = "2.5MG", .pmin = 0, .pmax = 250 }, + { .triplet = "004MG", .pmin = 0, .pmax = 400 }, + { .triplet = "006MG", .pmin = 0, .pmax = 600 }, + { .triplet = "010MG", .pmin = 0, .pmax = 1000 }, + { .triplet = "016MG", .pmin = 0, .pmax = 1600 }, + { .triplet = "025MG", .pmin = 0, .pmax = 2500 }, + { .triplet = "040MG", .pmin = 0, .pmax = 4000 }, + { .triplet = "060MG", .pmin = 0, .pmax = 6000 }, + { .triplet = "100MG", .pmin = 0, .pmax = 10000 }, + { .triplet = "160MG", .pmin = 0, .pmax = 16000 }, + { .triplet = "250MG", .pmin = 0, .pmax = 25000 }, + { .triplet = "400MG", .pmin = 0, .pmax = 40000 }, + { .triplet = "600MG", .pmin = 0, .pmax = 60000 }, + { .triplet = "001BG", .pmin = 0, .pmax = 100000 }, + { .triplet = "1.6BG", .pmin = 0, .pmax = 160000 }, + { .triplet = "2.5BG", .pmin = 0, .pmax = 250000 }, + { .triplet = "004BG", .pmin = 0, .pmax = 400000 }, + { .triplet = "006BG", .pmin = 0, .pmax = 600000 }, + { .triplet = "010BG", .pmin = 0, .pmax = 1000000 }, + { .triplet = "100KA", .pmin = 0, .pmax = 100000 }, + { .triplet = "160KA", .pmin = 0, .pmax = 160000 }, + { .triplet = "250KA", .pmin = 0, .pmax = 250000 }, + { .triplet = "400KA", .pmin = 0, .pmax = 400000 }, + { .triplet = "600KA", .pmin = 0, .pmax = 600000 }, + { .triplet = "001GA", .pmin = 0, .pmax = 1000000 }, + { .triplet = "160LD", .pmin = -160, .pmax = 160 }, + { .triplet = "250LD", .pmin = -250, .pmax = 250 }, + { .triplet = "400LD", .pmin = -400, .pmax = 400 }, + { .triplet = "600LD", .pmin = -600, .pmax = 600 }, + { .triplet = "001KD", .pmin = -1000, .pmax = 1000 }, + { .triplet = "1.6KD", .pmin = -1600, .pmax = 1600 }, + { .triplet = "2.5KD", .pmin = -2500, .pmax = 2500 }, + { .triplet = "004KD", .pmin = -4000, .pmax = 4000 }, + { .triplet = "006KD", .pmin = -6000, .pmax = 6000 }, + { .triplet = "010KD", .pmin = -10000, .pmax = 10000 }, + { .triplet = "016KD", .pmin = -16000, .pmax = 16000 }, + { .triplet = "025KD", .pmin = -25000, .pmax = 25000 }, + { .triplet = "040KD", .pmin = -40000, .pmax = 40000 }, + { .triplet = "060KD", .pmin = -60000, .pmax = 60000 }, + { .triplet = "100KD", .pmin = -100000, .pmax = 100000 }, + { .triplet = "160KD", .pmin = -160000, .pmax = 160000 }, + { .triplet = "250KD", .pmin = -250000, .pmax = 250000 }, + { .triplet = "400KD", .pmin = -400000, .pmax = 400000 }, + { .triplet = "250LG", .pmin = 0, .pmax = 250 }, + { .triplet = "400LG", .pmin = 0, .pmax = 400 }, + { .triplet = "600LG", .pmin = 0, .pmax = 600 }, + { .triplet = "001KG", .pmin = 0, .pmax = 1000 }, + { .triplet = "1.6KG", .pmin = 0, .pmax = 1600 }, + { .triplet = "2.5KG", .pmin = 0, .pmax = 2500 }, + { .triplet = "004KG", .pmin = 0, .pmax = 4000 }, + { .triplet = "006KG", .pmin = 0, .pmax = 6000 }, + { .triplet = "010KG", .pmin = 0, .pmax = 10000 }, + { .triplet = "016KG", .pmin = 0, .pmax = 16000 }, + { .triplet = "025KG", .pmin = 0, .pmax = 25000 }, + { .triplet = "040KG", .pmin = 0, .pmax = 40000 }, + { .triplet = "060KG", .pmin = 0, .pmax = 60000 }, + { .triplet = "100KG", .pmin = 0, .pmax = 100000 }, + { .triplet = "160KG", .pmin = 0, .pmax = 160000 }, + { .triplet = "250KG", .pmin = 0, .pmax = 250000 }, + { .triplet = "400KG", .pmin = 0, .pmax = 400000 }, + { .triplet = "600KG", .pmin = 0, .pmax = 600000 }, + { .triplet = "001GG", .pmin = 0, .pmax = 1000000 }, + { .triplet = "015PA", .pmin = 0, .pmax = 103421 }, + { .triplet = "030PA", .pmin = 0, .pmax = 206843 }, + { .triplet = "060PA", .pmin = 0, .pmax = 413685 }, + { .triplet = "100PA", .pmin = 0, .pmax = 689476 }, + { .triplet = "150PA", .pmin = 0, .pmax = 1034214 }, + { .triplet = "0.5ND", .pmin = -125, .pmax = 125 }, + { .triplet = "001ND", .pmin = -249, .pmax = 249 }, + { .triplet = "002ND", .pmin = -498, .pmax = 498 }, + { .triplet = "004ND", .pmin = -996, .pmax = 996 }, + { .triplet = "005ND", .pmin = -1245, .pmax = 1245 }, + { .triplet = "010ND", .pmin = -2491, .pmax = 2491 }, + { .triplet = "020ND", .pmin = -4982, .pmax = 4982 }, + { .triplet = "030ND", .pmin = -7473, .pmax = 7473 }, + { .triplet = "001PD", .pmin = -6895, .pmax = 6895 }, + { .triplet = "005PD", .pmin = -34474, .pmax = 34474 }, + { .triplet = "015PD", .pmin = -103421, .pmax = 103421 }, + { .triplet = "030PD", .pmin = -206843, .pmax = 206843 }, + { .triplet = "060PD", .pmin = -413685, .pmax = 413685 }, + { .triplet = "001NG", .pmin = 0, .pmax = 249 }, + { .triplet = "002NG", .pmin = 0, .pmax = 498 }, + { .triplet = "004NG", .pmin = 0, .pmax = 996 }, + { .triplet = "005NG", .pmin = 0, .pmax = 1245 }, + { .triplet = "010NG", .pmin = 0, .pmax = 2491 }, + { .triplet = "020NG", .pmin = 0, .pmax = 4982 }, + { .triplet = "030NG", .pmin = 0, .pmax = 7473 }, + { .triplet = "001PG", .pmin = 0, .pmax = 6895 }, + { .triplet = "005PG", .pmin = 0, .pmax = 34474 }, + { .triplet = "015PG", .pmin = 0, .pmax = 103421 }, + { .triplet = "030PG", .pmin = 0, .pmax = 206843 }, + { .triplet = "060PG", .pmin = 0, .pmax = 413685 }, + { .triplet = "100PG", .pmin = 0, .pmax = 689476 }, + { .triplet = "150PG", .pmin = 0, .pmax = 1034214 }, +}; + +/* + * hsc_measurement_is_valid() - validate last conversion via status bits + * @data: structure containing instantiated sensor data + * Return: true only if both status bits are zero + * + * the two MSB from the first transfered byte contain a status code + * 00 - normal operation, valid data + * 01 - device in factory programming mode + * 10 - stale data + * 11 - diagnostic condition + */ +static bool hsc_measurement_is_valid(struct hsc_data *data) +{ + return !(data->buffer[0] & HSC_STATUS_MASK); +} + +static int hsc_get_measurement(struct hsc_data *data) +{ + const struct hsc_chip_data *chip = data->chip; + int ret; + + guard(mutex)(&data->lock); + ret = data->recv(data); + if (ret < 0) + return ret; + + data->is_valid = chip->valid(data); + if (!data->is_valid) + return -EAGAIN; + + return 0; +} + +static int hsc_read_raw(struct iio_dev *indio_dev, + struct iio_chan_spec const *channel, int *val, + int *val2, long mask) +{ + struct hsc_data *data = iio_priv(indio_dev); + int ret; + u32 recvd; + int raw; + + switch (mask) { + case IIO_CHAN_INFO_RAW: + ret = hsc_get_measurement(data); + if (ret) + return ret; + + recvd = get_unaligned_be32(data->buffer); + switch (channel->type) { + case IIO_PRESSURE: + raw = FIELD_GET(HSC_PRESSURE_MASK, recvd); + *val = raw; + return IIO_VAL_INT; + case IIO_TEMP: + raw = FIELD_GET(HSC_TEMPERATURE_MASK, recvd); + *val = raw; + return IIO_VAL_INT; + default: + return -EINVAL; + } + +/* + * IIO ABI expects + * value = (conv + offset) * scale + * + * datasheet provides the following formula for determining the temperature + * temp[C] = conv * a + b + * where a = 200/2047; b = -50 + * + * temp[C] = (conv + (b/a)) * a * (1000) + * => + * scale = a * 1000 = .097703957 * 1000 = 97.703957 + * offset = b/a = -50 / .097703957 = -50000000 / 97704 + * + * based on the datasheet + * pressure = (conv - Omin) * Q + Pmin = + * ((conv - Omin) + Pmin/Q) * Q + * => + * scale = Q = (Pmax - Pmin) / (Omax - Omin) + * offset = Pmin/Q - Omin = Pmin * (Omax - Omin) / (Pmax - Pmin) - Omin + */ + + case IIO_CHAN_INFO_SCALE: + switch (channel->type) { + case IIO_TEMP: + *val = 97; + *val2 = 703957; + return IIO_VAL_INT_PLUS_MICRO; + case IIO_PRESSURE: + *val = data->p_scale; + *val2 = data->p_scale_dec; + return IIO_VAL_INT_PLUS_NANO; + default: + return -EINVAL; + } + + case IIO_CHAN_INFO_OFFSET: + switch (channel->type) { + case IIO_TEMP: + *val = -50000000; + *val2 = 97704; + return IIO_VAL_FRACTIONAL; + case IIO_PRESSURE: + *val = data->p_offset; + *val2 = data->p_offset_dec; + return IIO_VAL_INT_PLUS_MICRO; + default: + return -EINVAL; + } + + default: + return -EINVAL; + } + + return -EINVAL; +} + +static const struct iio_chan_spec hsc_channels[] = { + { + .type = IIO_PRESSURE, + .info_mask_separate = BIT(IIO_CHAN_INFO_RAW) | + BIT(IIO_CHAN_INFO_SCALE) | + BIT(IIO_CHAN_INFO_OFFSET), + }, + { + .type = IIO_TEMP, + .info_mask_separate = BIT(IIO_CHAN_INFO_RAW) | + BIT(IIO_CHAN_INFO_SCALE) | + BIT(IIO_CHAN_INFO_OFFSET), + }, +}; + +static const struct iio_info hsc_info = { + .read_raw = hsc_read_raw, +}; + +static const struct hsc_chip_data hsc_chip = { + .valid = hsc_measurement_is_valid, + .channels = hsc_channels, + .num_channels = ARRAY_SIZE(hsc_channels), +}; + +int hsc_common_probe(struct device *dev, void *client, + int (*recv_fct)(struct hsc_data *data), const char *name) +{ + struct hsc_data *hsc; + struct iio_dev *indio_dev; + const char *triplet; + u64 tmp; + int index; + int found = 0; + int ret; + + indio_dev = devm_iio_device_alloc(dev, sizeof(*hsc)); + if (!indio_dev) + return -ENOMEM; + + hsc = iio_priv(indio_dev); + + hsc->chip = &hsc_chip; + hsc->recv = recv_fct; + hsc->client = client; + + ret = device_property_read_u32(dev, + "honeywell,transfer-function", + &hsc->function); + if (ret) + return dev_err_probe(dev, ret, + "honeywell,transfer-function could not be read\n"); + if (hsc->function > HSC_FUNCTION_F) + return dev_err_probe(dev, -EINVAL, + "honeywell,transfer-function %d invalid\n", + hsc->function); + + ret = device_property_read_string(dev, + "honeywell,pressure-triplet", &triplet); + if (ret) + return dev_err_probe(dev, ret, + "honeywell,pressure-triplet could not be read\n"); + + if (strncmp(triplet, "NA", 2) == 0) { + /* "not available" in the nomenclature + we got a custom-range chip so extract pmin, pmax from dt */ + ret = device_property_read_u32(dev, + "honeywell,pmin-pascal", + &hsc->pmin); + if (ret) + return dev_err_probe(dev, ret, + "honeywell,pmin-pascal could not be read\n"); + ret = device_property_read_u32(dev, + "honeywell,pmax-pascal", + &hsc->pmax); + if (ret) + return dev_err_probe(dev, ret, + "honeywell,pmax-pascal could not be read\n"); + } else { + /* chip should be defined in the nomenclature */ + for (index = 0; index < ARRAY_SIZE(hsc_range_config); index++) { + if (strncmp(hsc_range_config[index].triplet, + triplet, + HSC_PRESSURE_TRIPLET_LEN - 1) == 0) { + hsc->pmin = hsc_range_config[index].pmin; + hsc->pmax = hsc_range_config[index].pmax; + found = 1; + break; + } + } + if (hsc->pmin == hsc->pmax || !found) + return dev_err_probe(dev, -EINVAL, + "honeywell,pressure-triplet is invalid\n"); + } + + ret = devm_regulator_get_enable(dev, "vdd"); + if (ret) + return dev_err_probe(dev, ret, "can't get vdd supply\n"); + + hsc->outmin = hsc_func_spec[hsc->function].output_min; + hsc->outmax = hsc_func_spec[hsc->function].output_max; + + /* multiply with MICRO and then divide by NANO since the output needs + to be in Pa * 1000 as per IIO ABI requirement */ + tmp = div_s64(((s64)(hsc->pmax - hsc->pmin)) * MICRO, + (hsc->outmax - hsc->outmin)); + hsc->p_scale = div_s64_rem(tmp, NANO, &hsc->p_scale_dec); + tmp = div_s64(((s64)hsc->pmin * (s64)(hsc->outmax - hsc->outmin)) * + MICRO, hsc->pmax - hsc->pmin); + tmp -= (s64)hsc->outmin * MICRO; + hsc->p_offset = div_s64_rem(tmp, MICRO, &hsc->p_offset_dec); + + mutex_init(&hsc->lock); + indio_dev->name = name; + indio_dev->modes = INDIO_DIRECT_MODE; + indio_dev->info = &hsc_info; + indio_dev->channels = hsc->chip->channels; + indio_dev->num_channels = hsc->chip->num_channels; + + return devm_iio_device_register(dev, indio_dev); +} +EXPORT_SYMBOL_NS(hsc_common_probe, IIO_HONEYWELL_HSC030PA); + +MODULE_AUTHOR("Petre Rodan "); +MODULE_DESCRIPTION("Honeywell HSC and SSC pressure sensor core driver"); +MODULE_LICENSE("GPL"); diff --git a/drivers/iio/pressure/hsc030pa.h b/drivers/iio/pressure/hsc030pa.h new file mode 100644 index 000000000000..685af81b4f0c --- /dev/null +++ b/drivers/iio/pressure/hsc030pa.h @@ -0,0 +1,79 @@ +/* SPDX-License-Identifier: GPL-2.0 */ +/* + * Honeywell TruStability HSC Series pressure/temperature sensor + * + * Copyright (c) 2023 Petre Rodan + */ + +#ifndef _HSC030PA_H +#define _HSC030PA_H + +#include +#include + +/* + * get all conversions (4 bytes) in one go + * since transfers are not address-based +*/ +#define HSC_REG_MEASUREMENT_RD_SIZE 4 + +struct device; + +struct iio_chan_spec; +struct iio_dev; + +struct hsc_chip_data; + +/** + * struct hsc_data + * @client: either i2c or spi kernel interface struct for current dev + * @chip: structure containing chip's channel properties + * @lock: lock protecting chip reads + * @recv: function that implements the chip reads + * @is_valid: false if last transfer has failed + * @buffer: raw conversion data + * @pmin: minimum measurable pressure limit + * @pmax: maximum measurable pressure limit + * @outmin: minimum raw pressure in counts (based on transfer function) + * @outmax: maximum raw pressure in counts (based on transfer function) + * @function: transfer function + * @p_scale: pressure scale + * @p_scale_dec: pressure scale, decimal places + * @p_offset: pressure offset + * @p_offset_dec: pressure offset, decimal places + */ +struct hsc_data { + void *client; + const struct hsc_chip_data *chip; + struct mutex lock; + int (*recv)(struct hsc_data *data); + bool is_valid; + u8 buffer[HSC_REG_MEASUREMENT_RD_SIZE] __aligned(IIO_DMA_MINALIGN); + s32 pmin; + s32 pmax; + u32 outmin; + u32 outmax; + u32 function; + s64 p_scale; + s32 p_scale_dec; + s64 p_offset; + s32 p_offset_dec; +}; + +struct hsc_chip_data { + bool (*valid)(struct hsc_data *data); + const struct iio_chan_spec *channels; + u8 num_channels; +}; + +enum hsc_func_id { + HSC_FUNCTION_A, + HSC_FUNCTION_B, + HSC_FUNCTION_C, + HSC_FUNCTION_F, +}; + +int hsc_common_probe(struct device *dev, void *client, + int (*recv_fct)(struct hsc_data *data), const char *name); + +#endif diff --git a/drivers/iio/pressure/hsc030pa_i2c.c b/drivers/iio/pressure/hsc030pa_i2c.c new file mode 100644 index 000000000000..921197f68ada --- /dev/null +++ b/drivers/iio/pressure/hsc030pa_i2c.c @@ -0,0 +1,69 @@ +// SPDX-License-Identifier: GPL-2.0-only +/* + * Honeywell TruStability HSC Series pressure/temperature sensor + * + * Copyright (c) 2023 Petre Rodan + * + * Datasheet: https://prod-edam.honeywell.com/content/dam/honeywell-edam/sps/siot/en-us/products/sensors/pressure-sensors/board-mount-pressure-sensors/trustability-hsc-series/documents/sps-siot-trustability-hsc-series-high-accuracy-board-mount-pressure-sensors-50099148-a-en-ciid-151133.pdf [hsc] + * Datasheet: https://prod-edam.honeywell.com/content/dam/honeywell-edam/sps/siot/en-us/products/sensors/pressure-sensors/board-mount-pressure-sensors/common/documents/sps-siot-i2c-comms-digital-output-pressure-sensors-tn-008201-3-en-ciid-45841.pdf [i2c related] + */ + +#include +#include + +#include + +#include "hsc030pa.h" + +static int hsc_i2c_recv(struct hsc_data *data) +{ + struct i2c_client *client = data->client; + struct i2c_msg msg; + int ret; + + msg.addr = client->addr; + msg.flags = client->flags | I2C_M_RD; + msg.len = HSC_REG_MEASUREMENT_RD_SIZE; + msg.buf = data->buffer; + + ret = i2c_transfer(client->adapter, &msg, 1); + + return (ret == 2) ? 0 : ret; +} + +static int hsc_i2c_probe(struct i2c_client *client) +{ + const struct i2c_device_id *id = i2c_client_get_device_id(client); + + if (!i2c_check_functionality(client->adapter, I2C_FUNC_I2C)) + return -EOPNOTSUPP; + + return hsc_common_probe(&client->dev, client, hsc_i2c_recv, id->name); +} + +static const struct of_device_id hsc_i2c_match[] = { + {.compatible = "honeywell,hsc030pa"}, + {} +}; +MODULE_DEVICE_TABLE(of, hsc_i2c_match); + +static const struct i2c_device_id hsc_i2c_id[] = { + {"hsc030pa"}, + {} +}; +MODULE_DEVICE_TABLE(i2c, hsc_i2c_id); + +static struct i2c_driver hsc_i2c_driver = { + .driver = { + .name = "hsc030pa", + .of_match_table = hsc_i2c_match, + }, + .probe = hsc_i2c_probe, + .id_table = hsc_i2c_id, +}; +module_i2c_driver(hsc_i2c_driver); + +MODULE_AUTHOR("Petre Rodan "); +MODULE_DESCRIPTION("Honeywell HSC and SSC pressure sensor i2c driver"); +MODULE_LICENSE("GPL"); +MODULE_IMPORT_NS(IIO_HONEYWELL_HSC030PA); diff --git a/drivers/iio/pressure/hsc030pa_spi.c b/drivers/iio/pressure/hsc030pa_spi.c new file mode 100644 index 000000000000..8b67ecfce75e --- /dev/null +++ b/drivers/iio/pressure/hsc030pa_spi.c @@ -0,0 +1,60 @@ +// SPDX-License-Identifier: GPL-2.0-only +/* + * Honeywell TruStability HSC Series pressure/temperature sensor + * + * Copyright (c) 2023 Petre Rodan + * + * Datasheet: https://prod-edam.honeywell.com/content/dam/honeywell-edam/sps/siot/en-us/products/sensors/pressure-sensors/board-mount-pressure-sensors/trustability-hsc-series/documents/sps-siot-trustability-hsc-series-high-accuracy-board-mount-pressure-sensors-50099148-a-en-ciid-151133.pdf + */ + +#include +#include + +#include + +#include "hsc030pa.h" + +static int hsc_spi_recv(struct hsc_data *data) +{ + struct spi_transfer xfer = { + .tx_buf = NULL, + .rx_buf = data->buffer, + .len = HSC_REG_MEASUREMENT_RD_SIZE, + }; + + return spi_sync_transfer(data->client, &xfer, 1); +} + +static int hsc_spi_probe(struct spi_device *spi) +{ + const struct spi_device_id *id = spi_get_device_id(spi); + + return hsc_common_probe(&spi->dev, spi, hsc_spi_recv, id->name); +} + +static const struct of_device_id hsc_spi_match[] = { + {.compatible = "honeywell,hsc030pa"}, + {} +}; +MODULE_DEVICE_TABLE(of, hsc_spi_match); + +static const struct spi_device_id hsc_spi_id[] = { + {"hsc030pa"}, + {} +}; +MODULE_DEVICE_TABLE(spi, hsc_spi_id); + +static struct spi_driver hsc_spi_driver = { + .driver = { + .name = "hsc030pa", + .of_match_table = hsc_spi_match, + }, + .probe = hsc_spi_probe, + .id_table = hsc_spi_id, +}; +module_spi_driver(hsc_spi_driver); + +MODULE_AUTHOR("Petre Rodan "); +MODULE_DESCRIPTION("Honeywell HSC and SSC pressure sensor spi driver"); +MODULE_LICENSE("GPL"); +MODULE_IMPORT_NS(IIO_HONEYWELL_HSC030PA);