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iio: hid-sensor-als: Add light chromaticity support

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In most cases, ambient color sensors also support the x and y light
colors, which represent the coordinates on the CIE 1931 chromaticity
diagram. Thus, add light chromaticity x and y.

Signed-off-by: Basavaraj Natikar <Basavaraj.Natikar@amd.com>
Acked-by: Srinivas Pandruvada<srinivas.pandruvada@linux.intel.com>
Link: https://lore.kernel.org/r/20230919081054.2050714-8-Basavaraj.Natikar@amd.com
Signed-off-by: Jonathan Cameron <Jonathan.Cameron@huawei.com>
This commit is contained in:
Basavaraj Natikar
2023-09-19 13:40:52 +05:30
committed by Jonathan Cameron
parent 06790d4c69
commit ee3710f39f
2 changed files with 66 additions and 0 deletions
Download Patch File Download Diff File Expand all files Collapse all files
drivers/iio/light/hid-sensor-als.c
+63
View File
@@ -17,6 +17,8 @@ enum {
CHANNEL_SCAN_INDEX_INTENSITY,
CHANNEL_SCAN_INDEX_ILLUM,
CHANNEL_SCAN_INDEX_COLOR_TEMP,
CHANNEL_SCAN_INDEX_CHROMATICITY_X,
CHANNEL_SCAN_INDEX_CHROMATICITY_Y,
CHANNEL_SCAN_INDEX_MAX
};
@@ -76,6 +78,30 @@ static const struct iio_chan_spec als_channels[] = {
BIT(IIO_CHAN_INFO_HYSTERESIS_RELATIVE),
.scan_index = CHANNEL_SCAN_INDEX_COLOR_TEMP,
},
{
.type = IIO_CHROMATICITY,
.modified = 1,
.channel2 = IIO_MOD_X,
.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_CHROMATICITY_X,
},
{
.type = IIO_CHROMATICITY,
.modified = 1,
.channel2 = IIO_MOD_Y,
.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_CHROMATICITY_Y,
},
IIO_CHAN_SOFT_TIMESTAMP(CHANNEL_SCAN_INDEX_TIMESTAMP)
};
@@ -119,6 +145,16 @@ static int als_read_raw(struct iio_dev *indio_dev,
min = als_state->als[chan->scan_index].logical_minimum;
address = HID_USAGE_SENSOR_LIGHT_COLOR_TEMPERATURE;
break;
case CHANNEL_SCAN_INDEX_CHROMATICITY_X:
report_id = als_state->als[chan->scan_index].report_id;
min = als_state->als[chan->scan_index].logical_minimum;
address = HID_USAGE_SENSOR_LIGHT_CHROMATICITY_X;
break;
case CHANNEL_SCAN_INDEX_CHROMATICITY_Y:
report_id = als_state->als[chan->scan_index].report_id;
min = als_state->als[chan->scan_index].logical_minimum;
address = HID_USAGE_SENSOR_LIGHT_CHROMATICITY_Y;
break;
default:
report_id = -1;
break;
@@ -243,6 +279,14 @@ static int als_capture_sample(struct hid_sensor_hub_device *hsdev,
als_state->scan.illum[CHANNEL_SCAN_INDEX_COLOR_TEMP] = sample_data;
ret = 0;
break;
case HID_USAGE_SENSOR_LIGHT_CHROMATICITY_X:
als_state->scan.illum[CHANNEL_SCAN_INDEX_CHROMATICITY_X] = sample_data;
ret = 0;
break;
case HID_USAGE_SENSOR_LIGHT_CHROMATICITY_Y:
als_state->scan.illum[CHANNEL_SCAN_INDEX_CHROMATICITY_Y] = 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);
@@ -291,6 +335,25 @@ static int als_parse_report(struct platform_device *pdev,
st->als[CHANNEL_SCAN_INDEX_COLOR_TEMP].index,
st->als[CHANNEL_SCAN_INDEX_COLOR_TEMP].report_id);
for (i = 0; i < 2; i++) {
int next_scan_index = CHANNEL_SCAN_INDEX_CHROMATICITY_X + i;
ret = sensor_hub_input_get_attribute_info(hsdev,
HID_INPUT_REPORT, usage_id,
HID_USAGE_SENSOR_LIGHT_CHROMATICITY_X + i,
&st->als[next_scan_index]);
if (ret < 0)
return ret;
als_adjust_channel_bit_mask(channels,
CHANNEL_SCAN_INDEX_CHROMATICITY_X + i,
st->als[next_scan_index].size);
dev_dbg(&pdev->dev, "als %x:%x\n",
st->als[next_scan_index].index,
st->als[next_scan_index].report_id);
}
st->scale_precision = hid_sensor_format_scale(usage_id,
&st->als[CHANNEL_SCAN_INDEX_INTENSITY],
&st->scale_pre_decml, &st->scale_post_decml);
include/linux/hid-sensor-ids.h
+3
View File
@@ -22,6 +22,9 @@
#define HID_USAGE_SENSOR_DATA_LIGHT 0x2004d0
#define HID_USAGE_SENSOR_LIGHT_ILLUM 0x2004d1
#define HID_USAGE_SENSOR_LIGHT_COLOR_TEMPERATURE 0x2004d2
#define HID_USAGE_SENSOR_LIGHT_CHROMATICITY 0x2004d3
#define HID_USAGE_SENSOR_LIGHT_CHROMATICITY_X 0x2004d4
#define HID_USAGE_SENSOR_LIGHT_CHROMATICITY_Y 0x2004d5
/* PROX (200011) */
#define HID_USAGE_SENSOR_PROX 0x200011