diff options
Diffstat (limited to 'drivers/iio/imu/st_lsm6dsx/st_lsm6dsx_core.c')
| -rw-r--r-- | drivers/iio/imu/st_lsm6dsx/st_lsm6dsx_core.c | 99 |
1 files changed, 96 insertions, 3 deletions
diff --git a/drivers/iio/imu/st_lsm6dsx/st_lsm6dsx_core.c b/drivers/iio/imu/st_lsm6dsx/st_lsm6dsx_core.c index 3f6060c64f32..6a18b363cf73 100644 --- a/drivers/iio/imu/st_lsm6dsx/st_lsm6dsx_core.c +++ b/drivers/iio/imu/st_lsm6dsx/st_lsm6dsx_core.c @@ -56,6 +56,7 @@ #include <linux/kernel.h> #include <linux/module.h> +#include <linux/acpi.h> #include <linux/delay.h> #include <linux/iio/events.h> #include <linux/iio/iio.h> @@ -634,6 +635,24 @@ static const struct st_lsm6dsx_settings st_lsm6dsx_sensor_settings[] = { .fs_len = 4, }, }, + .samples_to_discard = { + [ST_LSM6DSX_ID_ACC] = { + .val[0] = { 12500, 1 }, + .val[1] = { 26000, 1 }, + .val[2] = { 52000, 1 }, + .val[3] = { 104000, 2 }, + .val[4] = { 208000, 2 }, + .val[5] = { 416000, 2 }, + }, + [ST_LSM6DSX_ID_GYRO] = { + .val[0] = { 12500, 2 }, + .val[1] = { 26000, 5 }, + .val[2] = { 52000, 7 }, + .val[3] = { 104000, 12 }, + .val[4] = { 208000, 20 }, + .val[5] = { 416000, 36 }, + }, + }, .irq_config = { .irq1 = { .addr = 0x0d, @@ -1014,6 +1033,10 @@ static const struct st_lsm6dsx_settings st_lsm6dsx_sensor_settings[] = { .hw_id = ST_LSM6DSOP_ID, .name = ST_LSM6DSOP_DEV_NAME, .wai = 0x6c, + }, { + .hw_id = ST_ASM330LHB_ID, + .name = ST_ASM330LHB_DEV_NAME, + .wai = 0x6b, }, }, .channels = { @@ -2602,6 +2625,73 @@ static int st_lsm6dsx_init_regulators(struct device *dev) return 0; } +#ifdef CONFIG_ACPI + +static int lsm6dsx_get_acpi_mount_matrix(struct device *dev, + struct iio_mount_matrix *orientation) +{ + struct acpi_buffer buffer = { ACPI_ALLOCATE_BUFFER, NULL }; + struct acpi_device *adev = ACPI_COMPANION(dev); + union acpi_object *obj, *elements; + acpi_status status; + int i, j, val[3]; + char *str; + + if (!has_acpi_companion(dev)) + return -EINVAL; + + if (!acpi_has_method(adev->handle, "ROTM")) + return -EINVAL; + + status = acpi_evaluate_object(adev->handle, "ROTM", NULL, &buffer); + if (ACPI_FAILURE(status)) { + dev_warn(dev, "Failed to get ACPI mount matrix: %d\n", status); + return -EINVAL; + } + + obj = buffer.pointer; + if (obj->type != ACPI_TYPE_PACKAGE || obj->package.count != 3) + goto unknown_format; + + elements = obj->package.elements; + for (i = 0; i < 3; i++) { + if (elements[i].type != ACPI_TYPE_STRING) + goto unknown_format; + + str = elements[i].string.pointer; + if (sscanf(str, "%d %d %d", &val[0], &val[1], &val[2]) != 3) + goto unknown_format; + + for (j = 0; j < 3; j++) { + switch (val[j]) { + case -1: str = "-1"; break; + case 0: str = "0"; break; + case 1: str = "1"; break; + default: goto unknown_format; + } + orientation->rotation[i * 3 + j] = str; + } + } + + kfree(buffer.pointer); + return 0; + +unknown_format: + dev_warn(dev, "Unknown ACPI mount matrix format, ignoring\n"); + kfree(buffer.pointer); + return -EINVAL; +} + +#else + +static int lsm6dsx_get_acpi_mount_matrix(struct device *dev, + struct iio_mount_matrix *orientation) +{ + return false; +} + +#endif + int st_lsm6dsx_probe(struct device *dev, int irq, int hw_id, struct regmap *regmap) { @@ -2676,9 +2766,12 @@ int st_lsm6dsx_probe(struct device *dev, int irq, int hw_id, return err; } - err = iio_read_mount_matrix(hw->dev, &hw->orientation); - if (err) - return err; + err = lsm6dsx_get_acpi_mount_matrix(hw->dev, &hw->orientation); + if (err) { + err = iio_read_mount_matrix(hw->dev, &hw->orientation); + if (err) + return err; + } for (i = 0; i < ST_LSM6DSX_ID_MAX; i++) { if (!hw->iio_devs[i]) |