iio: accel: bmc150-accel: Add support for BMA222

This adds support for the BMA222 version of this sensor,
found in for example the Samsung GT-I9070 mobile phone.
Signed-off-by: Linus Walleij <linus.walleij@linaro.org>
Link: https://lore.kernel.org/r/20201115205745.618455-2-linus.walleij@linaro.orgSigned-off-by: Jonathan Cameron <Jonathan.Cameron@huawei.com>

drivers/iio/accel/bmc150-accel-core.c

@@ -5,6 +5,7 @@
  *  - BMI055
  *  - BMA255
  *  - BMA250E
+ *  - BMA222
  *  - BMA222E
  *  - BMA280
  *
@@ -1063,6 +1064,20 @@ static const struct bmc150_accel_chip_info bmc150_accel_chip_info_tbl[] = {
 				 {153277, BMC150_ACCEL_DEF_RANGE_8G},
 				 {306457, BMC150_ACCEL_DEF_RANGE_16G} },
 	},
+	[bma222] = {
+		.name = "BMA222",
+		.chip_id = 0x03,
+		.channels = bma222e_accel_channels,
+		.num_channels = ARRAY_SIZE(bma222e_accel_channels),
+		/*
+		 * The datasheet page 17 says:
+		 * 15.6, 31.3, 62.5 and 125 mg per LSB.
+		 */
+		.scale_table = { {156000, BMC150_ACCEL_DEF_RANGE_2G},
+				 {313000, BMC150_ACCEL_DEF_RANGE_4G},
+				 {625000, BMC150_ACCEL_DEF_RANGE_8G},
+				 {1250000, BMC150_ACCEL_DEF_RANGE_16G} },
+	},
 	[bma222e] = {
 		.name = "BMA222E",
 		.chip_id = 0xF8,

drivers/iio/accel/bmc150-accel-i2c.c

@@ -5,6 +5,7 @@
  *  - BMI055
  *  - BMA255
  *  - BMA250E
+ *  - BMA222
  *  - BMA222E
  *  - BMA280
  *
@@ -54,6 +55,7 @@ static const struct acpi_device_id bmc150_accel_acpi_match[] = {
 	{"BMI055A",	bmi055},
 	{"BMA0255",	bma255},
 	{"BMA250E",	bma250e},
+	{"BMA222",	bma222},
 	{"BMA222E",	bma222e},
 	{"BMA0280",	bma280},
 	{"BOSC0200"},
@@ -66,6 +68,7 @@ static const struct i2c_device_id bmc150_accel_id[] = {
 	{"bmi055_accel",	bmi055},
 	{"bma255",		bma255},
 	{"bma250e",		bma250e},
+	{"bma222",		bma222},
 	{"bma222e",		bma222e},
 	{"bma280",		bma280},
 	{}
@@ -78,6 +81,7 @@ static const struct of_device_id bmc150_accel_of_match[] = {
 	{ .compatible = "bosch,bmi055_accel" },
 	{ .compatible = "bosch,bma255" },
 	{ .compatible = "bosch,bma250e" },
+	{ .compatible = "bosch,bma222" },
 	{ .compatible = "bosch,bma222e" },
 	{ .compatible = "bosch,bma280" },
 	{ },

drivers/iio/accel/bmc150-accel-spi.c

@@ -39,6 +39,7 @@ static const struct acpi_device_id bmc150_accel_acpi_match[] = {
 	{"BMI055A",	bmi055},
 	{"BMA0255",	bma255},
 	{"BMA250E",	bma250e},
+	{"BMA222",	bma222},
 	{"BMA222E",	bma222e},
 	{"BMA0280",	bma280},
 	{ },
@@ -50,6 +51,7 @@ static const struct spi_device_id bmc150_accel_id[] = {
 	{"bmi055_accel",	bmi055},
 	{"bma255",		bma255},
 	{"bma250e",		bma250e},
+	{"bma222",		bma222},
 	{"bma222e",		bma222e},
 	{"bma280",		bma280},
 	{}

drivers/iio/accel/bmc150-accel.h

@@ -9,6 +9,7 @@ enum {
 	bmi055,
 	bma255,
 	bma250e,
+	bma222,
 	bma222e,
 	bma280,
 };