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path: root/drivers/iio/light/hid-sensor-als.c
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Diffstat (limited to 'drivers/iio/light/hid-sensor-als.c')
-rw-r--r--drivers/iio/light/hid-sensor-als.c122
1 files changed, 104 insertions, 18 deletions
diff --git a/drivers/iio/light/hid-sensor-als.c b/drivers/iio/light/hid-sensor-als.c
index b6c4bef2a7..260281194f 100644
--- a/drivers/iio/light/hid-sensor-als.c
+++ b/drivers/iio/light/hid-sensor-als.c
@@ -14,8 +14,11 @@
#include "../common/hid-sensors/hid-sensor-trigger.h"
enum {
- CHANNEL_SCAN_INDEX_INTENSITY = 0,
- CHANNEL_SCAN_INDEX_ILLUM = 1,
+ 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
};
@@ -25,6 +28,7 @@ struct als_state {
struct hid_sensor_hub_callbacks callbacks;
struct hid_sensor_common common_attributes;
struct hid_sensor_hub_attribute_info als[CHANNEL_SCAN_INDEX_MAX];
+ struct iio_chan_spec channels[CHANNEL_SCAN_INDEX_MAX + 1];
struct {
u32 illum[CHANNEL_SCAN_INDEX_MAX];
u64 timestamp __aligned(8);
@@ -33,7 +37,18 @@ struct als_state {
int scale_post_decml;
int scale_precision;
int value_offset;
+ int num_channels;
s64 timestamp;
+ unsigned long als_scan_mask[2];
+};
+
+/* The order of usage ids must match scan index starting from CHANNEL_SCAN_INDEX_INTENSITY */
+static const u32 als_usage_ids[] = {
+ HID_USAGE_SENSOR_LIGHT_ILLUM,
+ HID_USAGE_SENSOR_LIGHT_ILLUM,
+ HID_USAGE_SENSOR_LIGHT_COLOR_TEMPERATURE,
+ HID_USAGE_SENSOR_LIGHT_CHROMATICITY_X,
+ HID_USAGE_SENSOR_LIGHT_CHROMATICITY_Y,
};
static const u32 als_sensitivity_addresses[] = {
@@ -65,6 +80,40 @@ 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,
+ },
+ {
+ .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)
};
@@ -103,6 +152,21 @@ 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;
+ 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;
@@ -223,6 +287,18 @@ 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_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);
@@ -238,27 +314,38 @@ static int als_capture_sample(struct hid_sensor_hub_device *hsdev,
/* Parse report which is specific to an usage id*/
static int als_parse_report(struct platform_device *pdev,
struct hid_sensor_hub_device *hsdev,
- struct iio_chan_spec *channels,
unsigned usage_id,
struct als_state *st)
{
- int ret;
+ struct iio_chan_spec *channels;
+ int ret, index = 0;
int i;
- for (i = 0; i <= CHANNEL_SCAN_INDEX_ILLUM; ++i) {
+ channels = st->channels;
+
+ for (i = 0; i < CHANNEL_SCAN_INDEX_MAX; ++i) {
ret = sensor_hub_input_get_attribute_info(hsdev,
HID_INPUT_REPORT,
usage_id,
- HID_USAGE_SENSOR_LIGHT_ILLUM,
+ als_usage_ids[i],
&st->als[i]);
if (ret < 0)
- return ret;
- als_adjust_channel_bit_mask(channels, i, st->als[i].size);
+ continue;
+
+ channels[index] = als_channels[i];
+ st->als_scan_mask[0] |= BIT(i);
+ als_adjust_channel_bit_mask(channels, index, st->als[i].size);
+ ++index;
dev_dbg(&pdev->dev, "als %x:%x\n", st->als[i].index,
st->als[i].report_id);
}
+ st->num_channels = index;
+ /* Return success even if one usage id is present */
+ if (index)
+ ret = 0;
+
st->scale_precision = hid_sensor_format_scale(usage_id,
&st->als[CHANNEL_SCAN_INDEX_INTENSITY],
&st->scale_pre_decml, &st->scale_post_decml);
@@ -294,15 +381,7 @@ static int hid_als_probe(struct platform_device *pdev)
return ret;
}
- indio_dev->channels = devm_kmemdup(&pdev->dev, als_channels,
- sizeof(als_channels), GFP_KERNEL);
- if (!indio_dev->channels) {
- dev_err(&pdev->dev, "failed to duplicate channels\n");
- return -ENOMEM;
- }
-
ret = als_parse_report(pdev, hsdev,
- (struct iio_chan_spec *)indio_dev->channels,
hsdev->usage,
als_state);
if (ret) {
@@ -310,8 +389,15 @@ static int hid_als_probe(struct platform_device *pdev)
return ret;
}
- indio_dev->num_channels =
- ARRAY_SIZE(als_channels);
+ /* Add timestamp channel */
+ als_state->channels[als_state->num_channels] = als_channels[CHANNEL_SCAN_INDEX_TIMESTAMP];
+
+ /* +1 for adding timestamp channel */
+ indio_dev->num_channels = als_state->num_channels + 1;
+
+ indio_dev->channels = als_state->channels;
+ indio_dev->available_scan_masks = als_state->als_scan_mask;
+
indio_dev->info = &als_info;
indio_dev->name = name;
indio_dev->modes = INDIO_DIRECT_MODE;
generated by cgit v1.2.3 (git 2.39.1) at 2024-11-27 08:48:32 +0000