FAILED: patch "[PATCH] iio: pressure: bmp280: Fix regmap for BMP280 device" failed to apply to 5.4-stable tree

FAILED: patch "[PATCH] iio: pressure: bmp280: Fix regmap for BMP280 device" failed to apply to 5.4-stable tree

[gregkh]

The patch below does not apply to the 5.4-stable tree.
If someone wants it applied there, or to any other stable or longterm
tree, then please email the backport, including the original git commit
id to <stable@vger.kernel.org>.

To reproduce the conflict and resubmit, you may use the following commands:

git fetch https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git/ linux-5.4.y
git checkout FETCH_HEAD
git cherry-pick -x b9065b0250e1705935445ede0a18c1850afe7b75
# <resolve conflicts, build, test, etc.>
git commit -s
git send-email --to '<stable@vger.kernel.org>' --in-reply-to '2024100731-tavern-outgoing-d8ae@gregkh' --subject-prefix 'PATCH 5.4.y' HEAD^..

Possible dependencies:

b9065b0250e1 ("iio: pressure: bmp280: Fix regmap for BMP280 device")
b23be4cd99a6 ("iio: pressure: bmp280: Use BME prefix for BME280 specifics")
439ce8961bdd ("iio: pressure: bmp280: Improve indentation and line wrapping")
33564435c808 ("iio: pressure: bmp280: Allow multiple chips id per family of devices")
a2d43f44628f ("iio: pressure: fix some word spelling errors")
accb9d05df39 ("iio: pressure: bmp280: Add nvmem operations for BMP580")
597dfb2af052 ("iio: pressure: bmp280: Add support for new sensor BMP580")
42cde8808573 ("iio: pressure: Kconfig: Delete misleading I2C reference on bmp280 title")
c25ea00fefa4 ("iio: pressure: bmp280: Add preinit callback")
0b0b772637cd ("iio: pressure: bmp280: Use chip_info pointers for each chip as driver data")
12491d35551d ("iio: pressure: bmp280: convert to i2c's .probe_new()")
10b40ffba2f9 ("iio: pressure: bmp280: Add more tunable config parameters for BMP380")
8d329309184d ("iio: pressure: bmp280: Add support for BMP380 sensor family")
18d1bb377023 ("iio: pressure: bmp280: reorder i2c device tables declarations")
327b5c0512c1 ("iio: pressure: bmp280: Fix alignment for DMA safety")
b00e805a47a8 ("iio: pressure: bmp280: simplify driver initialization logic")
83cb40beaefa ("iio: pressure: bmp280: Simplify bmp280 calibration data reading")
2405f8cc8485 ("iio: pressure: bmp280: use FIELD_GET, FIELD_PREP and GENMASK")
5f0c359defea ("iio: pressure: bmp280: reorder local variables following reverse xmas tree")
5d5129b17f83 ("iio: pressure: bmp280: fix datasheet links")

thanks,

greg k-h

------------------ original commit in Linus's tree ------------------

From b9065b0250e1705935445ede0a18c1850afe7b75 Mon Sep 17 00:00:00 2001
From: Vasileios Amoiridis <vassilisamir@gmail.com>
Date: Thu, 11 Jul 2024 23:15:49 +0200
Subject: [PATCH] iio: pressure: bmp280: Fix regmap for BMP280 device

Up to now, the BMP280 device is using the regmap of the BME280 which
has registers that exist only in the BME280 device.

Fixes: 14e8015f8569 ("iio: pressure: bmp280: split driver in logical parts")
Signed-off-by: Vasileios Amoiridis <vassilisamir@gmail.com>
Link: https://patch.msgid.link/20240711211558.106327-2-vassilisamir@gmail.com
Cc: <Stable@vger.kernel.org>
Signed-off-by: Jonathan Cameron <Jonathan.Cameron@huawei.com>

diff --git a/drivers/iio/pressure/bmp280-core.c b/drivers/iio/pressure/bmp280-core.c
index 2fc5724196e3..cc8553177977 100644
--- a/drivers/iio/pressure/bmp280-core.c
+++ b/drivers/iio/pressure/bmp280-core.c
@@ -1186,7 +1186,7 @@ const struct bmp280_chip_info bme280_chip_info = {
 	.id_reg = BMP280_REG_ID,
 	.chip_id = bme280_chip_ids,
 	.num_chip_id = ARRAY_SIZE(bme280_chip_ids),
-	.regmap_config = &bmp280_regmap_config,
+	.regmap_config = &bme280_regmap_config,
 	.start_up_time = 2000,
 	.channels = bme280_channels,
 	.num_channels = ARRAY_SIZE(bme280_channels),
diff --git a/drivers/iio/pressure/bmp280-regmap.c b/drivers/iio/pressure/bmp280-regmap.c
index fa52839474b1..d27d68edd906 100644
--- a/drivers/iio/pressure/bmp280-regmap.c
+++ b/drivers/iio/pressure/bmp280-regmap.c
@@ -41,7 +41,7 @@ const struct regmap_config bmp180_regmap_config = {
 };
 EXPORT_SYMBOL_NS(bmp180_regmap_config, IIO_BMP280);
 
-static bool bmp280_is_writeable_reg(struct device *dev, unsigned int reg)
+static bool bme280_is_writeable_reg(struct device *dev, unsigned int reg)
 {
 	switch (reg) {
 	case BMP280_REG_CONFIG:
@@ -54,7 +54,35 @@ static bool bmp280_is_writeable_reg(struct device *dev, unsigned int reg)
 	}
 }
 
+static bool bmp280_is_writeable_reg(struct device *dev, unsigned int reg)
+{
+	switch (reg) {
+	case BMP280_REG_CONFIG:
+	case BMP280_REG_CTRL_MEAS:
+	case BMP280_REG_RESET:
+		return true;
+	default:
+		return false;
+	}
+}
+
 static bool bmp280_is_volatile_reg(struct device *dev, unsigned int reg)
+{
+	switch (reg) {
+	case BMP280_REG_TEMP_XLSB:
+	case BMP280_REG_TEMP_LSB:
+	case BMP280_REG_TEMP_MSB:
+	case BMP280_REG_PRESS_XLSB:
+	case BMP280_REG_PRESS_LSB:
+	case BMP280_REG_PRESS_MSB:
+	case BMP280_REG_STATUS:
+		return true;
+	default:
+		return false;
+	}
+}
+
+static bool bme280_is_volatile_reg(struct device *dev, unsigned int reg)
 {
 	switch (reg) {
 	case BME280_REG_HUMIDITY_LSB:
@@ -71,7 +99,6 @@ static bool bmp280_is_volatile_reg(struct device *dev, unsigned int reg)
 		return false;
 	}
 }
-
 static bool bmp380_is_writeable_reg(struct device *dev, unsigned int reg)
 {
 	switch (reg) {
@@ -167,7 +194,7 @@ const struct regmap_config bmp280_regmap_config = {
 	.reg_bits = 8,
 	.val_bits = 8,
 
-	.max_register = BME280_REG_HUMIDITY_LSB,
+	.max_register = BMP280_REG_TEMP_XLSB,
 	.cache_type = REGCACHE_RBTREE,
 
 	.writeable_reg = bmp280_is_writeable_reg,
@@ -175,6 +202,18 @@ const struct regmap_config bmp280_regmap_config = {
 };
 EXPORT_SYMBOL_NS(bmp280_regmap_config, IIO_BMP280);
 
+const struct regmap_config bme280_regmap_config = {
+	.reg_bits = 8,
+	.val_bits = 8,
+
+	.max_register = BME280_REG_HUMIDITY_LSB,
+	.cache_type = REGCACHE_RBTREE,
+
+	.writeable_reg = bme280_is_writeable_reg,
+	.volatile_reg = bme280_is_volatile_reg,
+};
+EXPORT_SYMBOL_NS(bme280_regmap_config, IIO_BMP280);
+
 const struct regmap_config bmp380_regmap_config = {
 	.reg_bits = 8,
 	.val_bits = 8,
diff --git a/drivers/iio/pressure/bmp280.h b/drivers/iio/pressure/bmp280.h
index 0933e411ae2c..4b0ebce001df 100644
--- a/drivers/iio/pressure/bmp280.h
+++ b/drivers/iio/pressure/bmp280.h
@@ -490,6 +490,7 @@ extern const struct bmp280_chip_info bmp580_chip_info;
 /* Regmap configurations */
 extern const struct regmap_config bmp180_regmap_config;
 extern const struct regmap_config bmp280_regmap_config;
+extern const struct regmap_config bme280_regmap_config;
 extern const struct regmap_config bmp380_regmap_config;
 extern const struct regmap_config bmp580_regmap_config;