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Mon, 30 Mar 2026 13:01:09 -0700 (PDT) From: Chris Morgan To: linux-iio@vger.kernel.org Cc: andy@kernel.org, nuno.sa@analog.com, dlechner@baylibre.com, jic23@kernel.org, jean-baptiste.maneyrol@tdk.com, linux-rockchip@lists.infradead.org, devicetree@vger.kernel.org, heiko@sntech.de, conor+dt@kernel.org, krzk+dt@kernel.org, robh@kernel.org, andriy.shevchenko@intel.com, Chris Morgan Subject: [PATCH V3 5/9] iio: imu: inv_icm42607: Add Temperature Support in icm42607 Date: Mon, 30 Mar 2026 14:58:49 -0500 Message-ID: <20260330195853.392877-6-macroalpha82@gmail.com> X-Mailer: git-send-email 2.43.0 In-Reply-To: <20260330195853.392877-1-macroalpha82@gmail.com> References: <20260330195853.392877-1-macroalpha82@gmail.com> Precedence: bulk X-Mailing-List: devicetree@vger.kernel.org List-Id: List-Subscribe: List-Unsubscribe: MIME-Version: 1.0 Content-Type: text/plain; charset=UTF-8 Content-Transfer-Encoding: 8bit From: Chris Morgan Add functions for reading temperature sensor data. Signed-off-by: Chris Morgan --- drivers/iio/imu/inv_icm42607/inv_icm42607.h | 3 + .../iio/imu/inv_icm42607/inv_icm42607_core.c | 17 ++++ .../iio/imu/inv_icm42607/inv_icm42607_temp.c | 81 +++++++++++++++++++ .../iio/imu/inv_icm42607/inv_icm42607_temp.h | 30 +++++++ 4 files changed, 131 insertions(+) create mode 100644 drivers/iio/imu/inv_icm42607/inv_icm42607_temp.c create mode 100644 drivers/iio/imu/inv_icm42607/inv_icm42607_temp.h diff --git a/drivers/iio/imu/inv_icm42607/inv_icm42607.h b/drivers/iio/imu/inv_icm42607/inv_icm42607.h index 5530fd3bc03f..086848c8fd3b 100644 --- a/drivers/iio/imu/inv_icm42607/inv_icm42607.h +++ b/drivers/iio/imu/inv_icm42607/inv_icm42607.h @@ -433,6 +433,9 @@ extern const struct dev_pm_ops inv_icm42607_pm_ops; u32 inv_icm42607_odr_to_period(enum inv_icm42607_odr odr); +int inv_icm42607_set_temp_conf(struct inv_icm42607_state *st, bool enable, + unsigned int *sleep_ms); + int inv_icm42607_debugfs_reg(struct iio_dev *indio_dev, unsigned int reg, unsigned int writeval, unsigned int *readval); diff --git a/drivers/iio/imu/inv_icm42607/inv_icm42607_core.c b/drivers/iio/imu/inv_icm42607/inv_icm42607_core.c index 344071089042..735a262dc103 100644 --- a/drivers/iio/imu/inv_icm42607/inv_icm42607_core.c +++ b/drivers/iio/imu/inv_icm42607/inv_icm42607_core.c @@ -164,6 +164,23 @@ static int inv_icm42607_set_pwr_mgmt0(struct inv_icm42607_state *st, return 0; } +int inv_icm42607_set_temp_conf(struct inv_icm42607_state *st, bool enable, + unsigned int *sleep_ms) +{ + unsigned int val; + int ret; + + val = INV_ICM42607_TEMP_CONFIG0_FILTER(INV_ICM42607_FILTER_BW_34HZ); + ret = regmap_update_bits(st->map, INV_ICM42607_REG_TEMP_CONFIG0, + INV_ICM42607_TEMP_CONFIG0_FILTER_MASK, val); + if (ret) + return ret; + + return inv_icm42607_set_pwr_mgmt0(st, st->conf.gyro.mode, + st->conf.accel.mode, enable, + sleep_ms); +} + int inv_icm42607_debugfs_reg(struct iio_dev *indio_dev, unsigned int reg, unsigned int writeval, unsigned int *readval) { diff --git a/drivers/iio/imu/inv_icm42607/inv_icm42607_temp.c b/drivers/iio/imu/inv_icm42607/inv_icm42607_temp.c new file mode 100644 index 000000000000..b42eb78cd960 --- /dev/null +++ b/drivers/iio/imu/inv_icm42607/inv_icm42607_temp.c @@ -0,0 +1,81 @@ +// SPDX-License-Identifier: GPL-2.0-or-later +/* + * Copyright (C) 2026 InvenSense, Inc. + */ + +#include +#include +#include +#include +#include +#include + +#include "inv_icm42607.h" +#include "inv_icm42607_temp.h" + +static int inv_icm42607_temp_read(struct inv_icm42607_state *st, s16 *temp) +{ + struct device *dev = regmap_get_device(st->map); + __be16 *raw; + int ret; + + PM_RUNTIME_ACQUIRE_AUTOSUSPEND(dev, pm); + if (PM_RUNTIME_ACQUIRE_ERR(&pm)) + return -ENXIO; + + guard(mutex)(&st->lock); + + ret = inv_icm42607_set_temp_conf(st, true, NULL); + if (ret) + return ret; + + raw = (__be16 *)&st->buffer[0]; + ret = regmap_bulk_read(st->map, INV_ICM42607_REG_TEMP_DATA1, raw, sizeof(*raw)); + if (ret) + return ret; + + *temp = (s16)be16_to_cpup(raw); + if (*temp == INV_ICM42607_DATA_INVALID) + ret = -EINVAL; + + return ret; +} + +int inv_icm42607_temp_read_raw(struct iio_dev *indio_dev, + struct iio_chan_spec const *chan, + int *val, int *val2, long mask) +{ + struct inv_icm42607_state *st = iio_device_get_drvdata(indio_dev); + s16 temp; + int ret; + + if (chan->type != IIO_TEMP) + return -EINVAL; + + switch (mask) { + case IIO_CHAN_INFO_RAW: + if (!iio_device_claim_direct(indio_dev)) + return -EBUSY; + ret = inv_icm42607_temp_read(st, &temp); + iio_device_release_direct(indio_dev); + if (ret) + return ret; + *val = temp; + return IIO_VAL_INT; + /* + * T°C = (temp / 128) + 25 + * Tm°C = 1000 * ((temp * 100 / 12800) + 25) + * scale: 100000 / 12800 ~= 7.8125 + * offset: 25000 + */ + case IIO_CHAN_INFO_SCALE: + *val = 7; + *val2 = 812500; + return IIO_VAL_INT_PLUS_MICRO; + case IIO_CHAN_INFO_OFFSET: + *val = 25000; + return IIO_VAL_INT; + default: + return -EINVAL; + } +} diff --git a/drivers/iio/imu/inv_icm42607/inv_icm42607_temp.h b/drivers/iio/imu/inv_icm42607/inv_icm42607_temp.h new file mode 100644 index 000000000000..d0bd6c460ff2 --- /dev/null +++ b/drivers/iio/imu/inv_icm42607/inv_icm42607_temp.h @@ -0,0 +1,30 @@ +/* SPDX-License-Identifier: GPL-2.0-or-later */ +/* + * Copyright (C) 2026 InvenSense, Inc. + */ + +#ifndef INV_ICM42607_TEMP_H_ +#define INV_ICM42607_TEMP_H_ + +#include + +#define INV_ICM42607_TEMP_CHAN(_index) \ +{ \ + .type = IIO_TEMP, \ + .info_mask_separate = \ + BIT(IIO_CHAN_INFO_RAW) | \ + BIT(IIO_CHAN_INFO_OFFSET) | \ + BIT(IIO_CHAN_INFO_SCALE), \ + .scan_index = _index, \ + .scan_type = { \ + .sign = 's', \ + .realbits = 16, \ + .storagebits = 16, \ + }, \ +} + +int inv_icm42607_temp_read_raw(struct iio_dev *indio_dev, + struct iio_chan_spec const *chan, + int *val, int *val2, long mask); + +#endif -- 2.43.0 From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: X-Spam-Checker-Version: SpamAssassin 3.4.0 (2014-02-07) on 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46e09a7af769-7d9faee63b7mr7314213a34.20.1774900870107; Mon, 30 Mar 2026 13:01:10 -0700 (PDT) Received: from localhost.localdomain ([2600:1700:fb0:1bc0::54]) by smtp.gmail.com with ESMTPSA id 46e09a7af769-7da0a336353sm6601068a34.2.2026.03.30.13.01.09 (version=TLS1_3 cipher=TLS_AES_256_GCM_SHA384 bits=256/256); Mon, 30 Mar 2026 13:01:09 -0700 (PDT) From: Chris Morgan To: linux-iio@vger.kernel.org Cc: andy@kernel.org, nuno.sa@analog.com, dlechner@baylibre.com, jic23@kernel.org, jean-baptiste.maneyrol@tdk.com, linux-rockchip@lists.infradead.org, devicetree@vger.kernel.org, heiko@sntech.de, conor+dt@kernel.org, krzk+dt@kernel.org, robh@kernel.org, andriy.shevchenko@intel.com, Chris Morgan Subject: [PATCH V3 5/9] iio: imu: inv_icm42607: Add Temperature Support in icm42607 Date: Mon, 30 Mar 2026 14:58:49 -0500 Message-ID: <20260330195853.392877-6-macroalpha82@gmail.com> X-Mailer: git-send-email 2.43.0 In-Reply-To: <20260330195853.392877-1-macroalpha82@gmail.com> References: <20260330195853.392877-1-macroalpha82@gmail.com> MIME-Version: 1.0 X-CRM114-Version: 20100106-BlameMichelson ( TRE 0.8.0 (BSD) ) MR-646709E3 X-CRM114-CacheID: sfid-20260330_130111_275426_82813011 X-CRM114-Status: GOOD ( 17.50 ) X-BeenThere: linux-rockchip@lists.infradead.org X-Mailman-Version: 2.1.34 Precedence: list List-Id: Upstream kernel work for Rockchip platforms List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Content-Type: text/plain; charset="utf-8" Content-Transfer-Encoding: base64 Sender: "Linux-rockchip" Errors-To: linux-rockchip-bounces+linux-rockchip=archiver.kernel.org@lists.infradead.org RnJvbTogQ2hyaXMgTW9yZ2FuIDxtYWNyb21vcmdhbkBob3RtYWlsLmNvbT4KCkFkZCBmdW5jdGlv bnMgZm9yIHJlYWRpbmcgdGVtcGVyYXR1cmUgc2Vuc29yIGRhdGEuCgpTaWduZWQtb2ZmLWJ5OiBD aHJpcyBNb3JnYW4gPG1hY3JvbW9yZ2FuQGhvdG1haWwuY29tPgotLS0KIGRyaXZlcnMvaWlvL2lt dS9pbnZfaWNtNDI2MDcvaW52X2ljbTQyNjA3LmggICB8ICAzICsKIC4uLi9paW8vaW11L2ludl9p 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