From mboxrd@z Thu Jan 1 00:00:00 1970 Received: from mail-oi1-f173.google.com (mail-oi1-f173.google.com [209.85.167.173]) (using TLSv1.2 with cipher ECDHE-RSA-AES128-GCM-SHA256 (128/128 bits)) (No client certificate requested) by smtp.subspace.kernel.org (Postfix) with ESMTPS id D9D98352F85 for ; Wed, 10 Jun 2026 17:57:30 +0000 (UTC) Authentication-Results: smtp.subspace.kernel.org; arc=none smtp.client-ip=209.85.167.173 ARC-Seal:i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1781114252; cv=none; b=A+jRUNI1S5x1yH+1DMVQ+jYp2oIipYZyLxJW7xWAWP533cxsENpcNo77PvwZhN93M0AQD6znS35wtLeAS2O/AomkRF9tl/v+qdgGOmLq2gNjqvEZlztaRPbZ1sSyUcjcrMe4xy8IstnMIfDxKBMEPk87VO9gcefp6AaMJ9DhkOw= ARC-Message-Signature:i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1781114252; c=relaxed/simple; bh=Hal5qOvagB1ul9vsYeAe3xb/Oxfjm4EuCOrq7/Hr/Ko=; h=From:To:Cc:Subject:Date:Message-ID:In-Reply-To:References: MIME-Version:Content-Type; b=N/IzOylQoO5t+tfVsf6xs05dFo/lRek5wO83W2MvVkn84//3X1QDG4z7SXPvVv97ptoyHGxfWJk2UujntGg5g1iWJeq8/pWGagGqSGntEx8IDI4PlStUo1GJ0iOWyQJ/IW6+HLjAYwXzWdh4NDCcfXBUuMiVU9qtR7jarsr6+Ec= ARC-Authentication-Results:i=1; smtp.subspace.kernel.org; dmarc=pass (p=none dis=none) header.from=gmail.com; spf=pass smtp.mailfrom=gmail.com; dkim=pass (2048-bit key) header.d=gmail.com header.i=@gmail.com header.b=WhqzWa4S; arc=none smtp.client-ip=209.85.167.173 Authentication-Results: smtp.subspace.kernel.org; dmarc=pass (p=none dis=none) header.from=gmail.com Authentication-Results: smtp.subspace.kernel.org; spf=pass smtp.mailfrom=gmail.com Authentication-Results: smtp.subspace.kernel.org; dkim=pass (2048-bit key) header.d=gmail.com header.i=@gmail.com header.b="WhqzWa4S" Received: by mail-oi1-f173.google.com with SMTP id 5614622812f47-486b93fc7c8so2060950b6e.3 for ; Wed, 10 Jun 2026 10:57:30 -0700 (PDT) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=gmail.com; s=20251104; t=1781114250; x=1781719050; darn=vger.kernel.org; h=content-transfer-encoding:mime-version:references:in-reply-to :message-id:date:subject:cc:to:from:from:to:cc:subject:date :message-id:reply-to; bh=6Y4ne6J/krNcpETT8MGOTaoOj1NALXr/duHgeNONebA=; b=WhqzWa4SqTHIPQEHoW/dVKslUqgUFY6+7JLBKZui/C2FWVlhqfdjeUmW6sWp0wR1Ut BC3OxmYlCoBqHQE7eyR4SDgRNLMuQLBHz7zpEitgXvHVC0LJddsPlil9w5qGhx3zOaYe BJNVcNfwW30uigXfJ0Q9Mp4AFBpV8p7wcFq0NXZWU+Cl5VnRgfsHBusVETspEAv+aMtK jeAs2bB4l/2fKhu3s+KKz9yEMZIx+StvPCTQ4NwMTUDT+Cyv0bank+D03Hby1T3nYonp KHgLVaq6xzLvEyNpFXgZmibHMC1S4PgVS24GUr5qJLgx2bVxMap6lskMf/s4wb7agBAO t3Og== X-Google-DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=1e100.net; s=20251104; t=1781114250; x=1781719050; h=content-transfer-encoding:mime-version:references:in-reply-to :message-id:date:subject:cc:to:from:x-gm-gg:x-gm-message-state:from :to:cc:subject:date:message-id:reply-to; bh=6Y4ne6J/krNcpETT8MGOTaoOj1NALXr/duHgeNONebA=; b=Ud80A1lBJauT0uzL5tgaNfaquOXuEn5d+lkz/TAOqx1OTOhsBQCEhhVMyXcZp/OTdo KJ4zC7FP3Ej6kWMHYjV3QZ5nqEpcUIUnah73/NrxR6u5mjSSGOI7hS+y8CIbr3peYpth MGkdYEdjlyU7ulP4Y6oDi8liQydKS4lIyEPDNDqMDcd+vdPjEUwyixdgI6GGc/snPM3h u3hk4M/Vfs6x/Ww5bmgLIMtrjbyt2W3v9LYovYrD2xG0Iqfsz5zZB8BC6MJnkZPuZb42 4nEO1BqlC25gF3/4fz4Mhd5MIm9zDGQGawtSVwf9DZrWPObQe9kf6Qnb7DzbZGE5zOyT sbxQ== X-Forwarded-Encrypted: i=1; AFNElJ96vX1GunztV3738OW7I7qo/dTQUZukrE15/JUuZuZXESHmG1eMvu7rGae+U3uJknY6E7Dtxk9KRw9u@vger.kernel.org X-Gm-Message-State: AOJu0YwrOreIzPhtkvhT1RhZ8VMD4qgv4ZmsTw4dUaOO/w0GfR8PYTuf JGprv/vCDg3StXhU9g+q6wIVGsAVwwtp/6fuK7WAs746FekQXzO8VkOlfFZk2w== X-Gm-Gg: Acq92OH0Yu8cG00q+0k8YFgclsPd0hj3qRNjxBDvfj09s8Fd/ukDug/zW/UntuBSIsd CWIwI/Y6113jaA7xNLTxhpBI7RuXVHSh5BT+RNue7t9e3PUbPBoUkbOksgt2m/jrIxsVlKthDh0 QORKfT5oZ1HfpdxtJAVkiyXHOQfxcbyj1dYnVkC31qEPLozybtjX9lhhuOuXJSXHz+O/eyg/SHg GWJQGUdTwvUoGb1ZM8Au7zOkqF5/+qcOCnsF/tBcLB/Op8p4yWS2mFdNAkfqMBLIrxKle43Vl/j iYCu4K6iexZ6pq5EmFxgnMXEyc6Ojw+chbev3SCP1finlvZeEhgdDNQe53d4gxoKTi7ZyAlYFKa 3ne8Mu3QFkn7LKoO5RGwQAyhNfL37l5rlpAk9igr+35TKpCO1GnpHj0ZZZGW6+6aBleUrxb6ztQ eyr6bbeyon7D1osswK/Pzo82lt+bmuMvbPsOZfhCwtBaKTqP5Gq642/ogz3NUlu5JN X-Received: by 2002:a05:6808:2388:b0:485:a9c1:db8 with SMTP id 5614622812f47-4868defc36bmr15753067b6e.42.1781114249836; Wed, 10 Jun 2026 10:57:29 -0700 (PDT) Received: from localhost.localdomain ([2600:1700:fb0:1bc0:b86b:51ed:28ca:695f]) by smtp.gmail.com with ESMTPSA id 586e51a60fabf-440d7d4f449sm21180794fac.8.2026.06.10.10.57.29 (version=TLS1_3 cipher=TLS_AES_256_GCM_SHA384 bits=256/256); Wed, 10 Jun 2026 10:57:29 -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 V11 6/9] iio: imu: inv_icm42607: Add Temp Support in icm42607 Date: Wed, 10 Jun 2026 12:54:50 -0500 Message-ID: <20260610175455.19006-7-macroalpha82@gmail.com> X-Mailer: git-send-email 2.43.0 In-Reply-To: <20260610175455.19006-1-macroalpha82@gmail.com> References: <20260610175455.19006-1-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/Makefile | 1 + drivers/iio/imu/inv_icm42607/inv_icm42607.h | 5 ++ .../iio/imu/inv_icm42607/inv_icm42607_core.c | 18 ++++ .../iio/imu/inv_icm42607/inv_icm42607_temp.c | 82 +++++++++++++++++++ .../iio/imu/inv_icm42607/inv_icm42607_temp.h | 33 ++++++++ 5 files changed, 139 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/Makefile b/drivers/iio/imu/inv_icm42607/Makefile index be109102e203..c04953ed42ce 100644 --- a/drivers/iio/imu/inv_icm42607/Makefile +++ b/drivers/iio/imu/inv_icm42607/Makefile @@ -2,6 +2,7 @@ obj-$(CONFIG_INV_ICM42607) += inv-icm42607.o inv-icm42607-y += inv_icm42607_core.o +inv-icm42607-y += inv_icm42607_temp.o obj-$(CONFIG_INV_ICM42607_I2C) += inv-icm42607-i2c.o inv-icm42607-i2c-y += inv_icm42607_i2c.o diff --git a/drivers/iio/imu/inv_icm42607/inv_icm42607.h b/drivers/iio/imu/inv_icm42607/inv_icm42607.h index 1f1397eaa00e..1246a92edffc 100644 --- a/drivers/iio/imu/inv_icm42607/inv_icm42607.h +++ b/drivers/iio/imu/inv_icm42607/inv_icm42607.h @@ -120,6 +120,7 @@ struct inv_icm42607_suspended { * @orientation: sensor chip orientation relative to main hardware. * @conf: chip sensors configurations. * @suspended: suspended sensors configuration. + * @buffer: data transfer buffer aligned for DMA. */ struct inv_icm42607_state { struct mutex lock; @@ -130,6 +131,7 @@ struct inv_icm42607_state { struct iio_mount_matrix orientation; struct inv_icm42607_conf conf; struct inv_icm42607_suspended suspended; + __be16 buffer[3] __aligned(IIO_DMA_MINALIGN); }; /* Virtual register addresses: @bank on MSB (4 upper bits), @address on LSB */ @@ -361,6 +363,9 @@ extern const struct inv_icm42607_hw inv_icm42607_hw_data; extern const struct inv_icm42607_hw inv_icm42607p_hw_data; extern const struct dev_pm_ops inv_icm42607_pm_ops; +int inv_icm42607_set_temp_conf(struct inv_icm42607_state *st, bool enable, + unsigned int *sleep_ms); + int inv_icm42607_core_probe(struct regmap *regmap, const struct inv_icm42607_hw *hw, inv_icm42607_bus_setup bus_setup); diff --git a/drivers/iio/imu/inv_icm42607/inv_icm42607_core.c b/drivers/iio/imu/inv_icm42607/inv_icm42607_core.c index 5e1f924a3e34..88e3a064434b 100644 --- a/drivers/iio/imu/inv_icm42607/inv_icm42607_core.c +++ b/drivers/iio/imu/inv_icm42607/inv_icm42607_core.c @@ -117,6 +117,24 @@ 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 = FIELD_PREP(INV_ICM42607_TEMP_CONFIG0_FILTER_MASK, + 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); +} + static int inv_icm42607_set_conf(struct inv_icm42607_state *st, const struct inv_icm42607_conf *conf) { 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..55260082a19e --- /dev/null +++ b/drivers/iio/imu/inv_icm42607/inv_icm42607_temp.c @@ -0,0 +1,82 @@ +// SPDX-License-Identifier: GPL-2.0-or-later +/* + * Copyright (C) 2026 InvenSense, Inc. + */ + +#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); + ret = PM_RUNTIME_ACQUIRE_ERR(&pm); + if (ret) + return ret; + + guard(mutex)(&st->lock); + + ret = inv_icm42607_set_temp_conf(st, true, NULL); + if (ret) + return ret; + + raw = &st->buffer[0]; + ret = regmap_bulk_read(st->map, INV_ICM42607_REG_TEMP_DATA1, + raw, sizeof(*raw)); + if (ret) + return ret; + + *temp = be16_to_cpup(raw); + if (*temp == INV_ICM42607_DATA_INVALID) + return -EINVAL; + + return 0; +} + +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: 3200 + */ + case IIO_CHAN_INFO_SCALE: + *val = 7; + *val2 = 812500000; + return IIO_VAL_INT_PLUS_NANO; + case IIO_CHAN_INFO_OFFSET: + *val = 3200; + 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..e03924e30866 --- /dev/null +++ b/drivers/iio/imu/inv_icm42607/inv_icm42607_temp.h @@ -0,0 +1,33 @@ +/* SPDX-License-Identifier: GPL-2.0-or-later */ +/* + * Copyright (C) 2026 InvenSense, Inc. + */ + +#ifndef INV_ICM42607_TEMP_H_ +#define INV_ICM42607_TEMP_H_ + +#include + +struct iio_dev; +struct iio_chan_spec; + +#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