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iio: hid-sensor-als: Add light color temperature support

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On some platforms, ambient color sensors also support light color
temperature. Add support of light color temperature.

Signed-off-by: Basavaraj Natikar <Basavaraj.Natikar@amd.com>
Signed-off-by: Srinivas Pandruvada <srinivas.pandruvada@linux.intel.com>
Link: https://lore.kernel.org/r/20240205185926.3030521-4-srinivas.pandruvada@linux.intel.com
Signed-off-by: Jonathan Cameron <Jonathan.Cameron@huawei.com>
This commit is contained in:
Basavaraj Natikar
2024-02-05 10:59:25 -08:00
committed by Jonathan Cameron
parent 00c45c9ef9
commit 3765d426fe
2 changed files with 22 additions and 0 deletions
Download Patch File Download Diff File Expand all files Collapse all files

21
drivers/iio/light/hid-sensor-als.c
View File

@@ -16,6 +16,7 @@
enum {
CHANNEL_SCAN_INDEX_INTENSITY,
CHANNEL_SCAN_INDEX_ILLUM,
CHANNEL_SCAN_INDEX_COLOR_TEMP,
CHANNEL_SCAN_INDEX_MAX
};
@@ -43,6 +44,7 @@ struct als_state {
static const u32 als_usage_ids[] = {
HID_USAGE_SENSOR_LIGHT_ILLUM,
HID_USAGE_SENSOR_LIGHT_ILLUM,
HID_USAGE_SENSOR_LIGHT_COLOR_TEMPERATURE,
};
static const u32 als_sensitivity_addresses[] = {
@@ -74,6 +76,16 @@ static const struct iio_chan_spec als_channels[] = {
BIT(IIO_CHAN_INFO_HYSTERESIS_RELATIVE),
.scan_index = CHANNEL_SCAN_INDEX_ILLUM,
},
{
.type = IIO_COLORTEMP,
.info_mask_separate = BIT(IIO_CHAN_INFO_RAW),
.info_mask_shared_by_type = BIT(IIO_CHAN_INFO_OFFSET) |
BIT(IIO_CHAN_INFO_SCALE) |
BIT(IIO_CHAN_INFO_SAMP_FREQ) |
BIT(IIO_CHAN_INFO_HYSTERESIS) |
BIT(IIO_CHAN_INFO_HYSTERESIS_RELATIVE),
.scan_index = CHANNEL_SCAN_INDEX_COLOR_TEMP,
},
IIO_CHAN_SOFT_TIMESTAMP(CHANNEL_SCAN_INDEX_TIMESTAMP)
};
@@ -112,6 +124,11 @@ static int als_read_raw(struct iio_dev *indio_dev,
min = als_state->als[chan->scan_index].logical_minimum;
address = HID_USAGE_SENSOR_LIGHT_ILLUM;
break;
case CHANNEL_SCAN_INDEX_COLOR_TEMP:
report_id = als_state->als[chan->scan_index].report_id;
min = als_state->als[chan->scan_index].logical_minimum;
address = HID_USAGE_SENSOR_LIGHT_COLOR_TEMPERATURE;
break;
default:
report_id = -1;
break;
@@ -232,6 +249,10 @@ static int als_capture_sample(struct hid_sensor_hub_device *hsdev,
als_state->scan.illum[CHANNEL_SCAN_INDEX_ILLUM] = sample_data;
ret = 0;
break;
case HID_USAGE_SENSOR_LIGHT_COLOR_TEMPERATURE:
als_state->scan.illum[CHANNEL_SCAN_INDEX_COLOR_TEMP] = sample_data;
ret = 0;
break;
case HID_USAGE_SENSOR_TIME_TIMESTAMP:
als_state->timestamp = hid_sensor_convert_timestamp(&als_state->common_attributes,
*(s64 *)raw_data);

1
include/linux/hid-sensor-ids.h
View File

@@ -21,6 +21,7 @@
#define HID_USAGE_SENSOR_ALS 0x200041
#define HID_USAGE_SENSOR_DATA_LIGHT 0x2004d0
#define HID_USAGE_SENSOR_LIGHT_ILLUM 0x2004d1
#define HID_USAGE_SENSOR_LIGHT_COLOR_TEMPERATURE 0x2004d2
/* PROX (200011) */
#define HID_USAGE_SENSOR_PROX 0x200011