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iio: kx022a: Support ROHM KX134ACR-LBZ

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The register interface of the ROHM KX134ACR-LBZ accelerometer is
almost identical to the KX132ACR-LBZ. The main difference between these
accelerometers is that the KX134ACR-LBZ supports different G-ranges. The
driver can model this by informing different scale to users. Also, the
content of the "who_am_I" register is different.

Add an ID and scales for the KX134ACR-LBZ.

Signed-off-by: Matti Vaittinen <mazziesaccount@gmail.com>
Link: https://patch.msgid.link/27c43c595de1f3f698ace671922d4f5a48c3cd54.1732783834.git.mazziesaccount@gmail.com
Signed-off-by: Jonathan Cameron <Jonathan.Cameron@huawei.com>
This commit is contained in:
Matti Vaittinen 2024-11-28 11:02:45 +02:00 committed by Jonathan Cameron
parent 720c8b777a
commit 48e4f3cb67
4 changed files with 42 additions and 0 deletions
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2
drivers/iio/accel/kionix-kx022a-i2c.c
View File

@ -39,6 +39,7 @@ static const struct i2c_device_id kx022a_i2c_id[] = {
{ .name = "kx022a", .driver_data = (kernel_ulong_t)&kx022a_chip_info },
{ .name = "kx132-1211", .driver_data = (kernel_ulong_t)&kx132_chip_info },
{ .name = "kx132acr-lbz", .driver_data = (kernel_ulong_t)&kx132acr_chip_info },
{ .name = "kx134acr-lbz", .driver_data = (kernel_ulong_t)&kx134acr_chip_info },
{ }
};
MODULE_DEVICE_TABLE(i2c, kx022a_i2c_id);
@ -47,6 +48,7 @@ static const struct of_device_id kx022a_of_match[] = {
{ .compatible = "kionix,kx022a", .data = &kx022a_chip_info },
{ .compatible = "kionix,kx132-1211", .data = &kx132_chip_info },
{ .compatible = "rohm,kx132acr-lbz", .data = &kx132acr_chip_info },
{ .compatible = "rohm,kx134acr-lbz", .data = &kx134acr_chip_info },
{ }
};
MODULE_DEVICE_TABLE(of, kx022a_of_match);

2
drivers/iio/accel/kionix-kx022a-spi.c
View File

@ -39,6 +39,7 @@ static const struct spi_device_id kx022a_id[] = {
{ .name = "kx022a", .driver_data = (kernel_ulong_t)&kx022a_chip_info },
{ .name = "kx132-1211", .driver_data = (kernel_ulong_t)&kx132_chip_info },
{ .name = "kx132acr-lbz", .driver_data = (kernel_ulong_t)&kx132acr_chip_info },
{ .name = "kx134acr-lbz", .driver_data = (kernel_ulong_t)&kx134acr_chip_info },
{ }
};
MODULE_DEVICE_TABLE(spi, kx022a_id);
@ -47,6 +48,7 @@ static const struct of_device_id kx022a_of_match[] = {
{ .compatible = "kionix,kx022a", .data = &kx022a_chip_info },
{ .compatible = "kionix,kx132-1211", .data = &kx132_chip_info },
{ .compatible = "rohm,kx132acr-lbz", .data = &kx132acr_chip_info },
{ .compatible = "rohm,kx134acr-lbz", .data = &kx134acr_chip_info },
{ }
};
MODULE_DEVICE_TABLE(of, kx022a_of_match);

36
drivers/iio/accel/kionix-kx022a.c
View File

@ -408,6 +408,14 @@ static const int kx022a_scale_table[][2] = {
{ 0, 4788403 },
};
/* KX134ACR-LBZ ranges are (+/-) 8, 16, 32, 64 G */
static const int kx134acr_lbz_scale_table[][2] = {
{ 0, 2394202 },
{ 0, 4788403 },
{ 0, 9576807 },
{ 0, 19153613 },
};
static int kx022a_read_avail(struct iio_dev *indio_dev,
struct iio_chan_spec const *chan,
const int **vals, int *type, int *length,
@ -1236,6 +1244,34 @@ const struct kx022a_chip_info kx132acr_chip_info = {
};
EXPORT_SYMBOL_NS_GPL(kx132acr_chip_info, "IIO_KX022A");
const struct kx022a_chip_info kx134acr_chip_info = {
.name = "kx134acr-lbz",
.regmap_config = &kx022a_regmap_config,
.channels = kx022a_channels,
.num_channels = ARRAY_SIZE(kx022a_channels),
.scale_table = kx134acr_lbz_scale_table,
.scale_table_size = ARRAY_SIZE(kx134acr_lbz_scale_table) *
ARRAY_SIZE(kx134acr_lbz_scale_table[0]),
.fifo_length = KX022A_FIFO_LENGTH,
.who = KX022A_REG_WHO,
.id = KX134ACR_LBZ_ID,
.cntl = KX022A_REG_CNTL,
.cntl2 = KX022A_REG_CNTL2,
.odcntl = KX022A_REG_ODCNTL,
.buf_cntl1 = KX022A_REG_BUF_CNTL1,
.buf_cntl2 = KX022A_REG_BUF_CNTL2,
.buf_clear = KX022A_REG_BUF_CLEAR,
.buf_status1 = KX022A_REG_BUF_STATUS_1,
.buf_read = KX022A_REG_BUF_READ,
.inc1 = KX022A_REG_INC1,
.inc4 = KX022A_REG_INC4,
.inc5 = KX022A_REG_INC5,
.inc6 = KX022A_REG_INC6,
.xout_l = KX022A_REG_XOUT_L,
.get_fifo_bytes_available = kx022a_get_fifo_bytes_available,
};
EXPORT_SYMBOL_NS_GPL(kx134acr_chip_info, "IIO_KX022A");
int kx022a_probe_internal(struct device *dev, const struct kx022a_chip_info *chip_info)
{
static const char * const regulator_names[] = {"io-vdd", "vdd"};

2
drivers/iio/accel/kionix-kx022a.h
View File

@ -14,6 +14,7 @@
#define KX022A_REG_WHO 0x0f
#define KX022A_ID 0xc8
#define KX132ACR_LBZ_ID 0xd8
#define KX134ACR_LBZ_ID 0xcc
#define KX022A_REG_CNTL2 0x19
#define KX022A_MASK_SRST BIT(7)
@ -190,5 +191,6 @@ int kx022a_probe_internal(struct device *dev, const struct kx022a_chip_info *chi
extern const struct kx022a_chip_info kx022a_chip_info;
extern const struct kx022a_chip_info kx132_chip_info;
extern const struct kx022a_chip_info kx132acr_chip_info;
extern const struct kx022a_chip_info kx134acr_chip_info;
#endif