Hi Srinivas,
On 1/9/2024 11:30 PM, Srinivas Pandruvada wrote:
> From: Basavaraj Natikar <Basavaraj.Natikar@xxxxxxx>
>
> On some platforms, ambient color sensors also support light color
> temperature. Add support of light color temperature.
>
> Signed-off-by: Basavaraj Natikar <Basavaraj.Natikar@xxxxxxx>
> Signed-off-by: Srinivas Pandruvada <srinivas.pandruvada@xxxxxxxxxxxxxxx>
> ---
>
> I don't have a system to test this patch.
> Hi Basavraj,
> Please test.
After fixing both comments in patch 1 all works fine.
Thanks,
--
Basavaraj
>
> v3:
> Simplilified as no special processing is required in als_parse_report()
> v2:
> Original patch from Basavaraj Natikar <Basavaraj.Natikar@xxxxxxx> is
> modified to prevent failure when the new usage id is not found in the
> descriptor.
>
> drivers/iio/light/hid-sensor-als.c | 22 ++++++++++++++++++++++
> include/linux/hid-sensor-ids.h | 1 +
> 2 files changed, 23 insertions(+)
>
> diff --git a/drivers/iio/light/hid-sensor-als.c b/drivers/iio/light/hid-sensor-als.c
> index a7bde6b68102..0d54eb59e47d 100644
> --- a/drivers/iio/light/hid-sensor-als.c
> +++ b/drivers/iio/light/hid-sensor-als.c
> @@ -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;
> @@ -235,6 +252,11 @@ static int als_capture_sample(struct hid_sensor_hub_device *hsdev,
> als_state->scan.illum[scan_index] = sample_data;
> ret = 0;
> break;
> + case HID_USAGE_SENSOR_LIGHT_COLOR_TEMPERATURE:
> + scan_index = als_state->scan.scan_index[CHANNEL_SCAN_INDEX_COLOR_TEMP];
> + als_state->scan.illum[scan_index] = 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);
> diff --git a/include/linux/hid-sensor-ids.h b/include/linux/hid-sensor-ids.h
> index 13b1e65fbdcc..8af4fb3e0254 100644
> --- a/include/linux/hid-sensor-ids.h
> +++ b/include/linux/hid-sensor-ids.h
> @@ -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
