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

This reverts commit 5f05285df691b1e82108eead7165feae238c95ef.

This commit assumes that every HID descriptor for ALS sensor has
presence of usage id ID HID_USAGE_SENSOR_LIGHT_COLOR_TEMPERATURE.
When the above usage id is absent,  driver probe fails. This breaks
ALS sensor functionality on many platforms.

Till we have a good solution, revert this commit.

Reported-by: Thomas Weißschuh <thomas@t-8ch.de>
Closes: https://bugzilla.kernel.org/show_bug.cgi?id=218223
Signed-off-by: Srinivas Pandruvada <srinivas.pandruvada@linux.intel.com>
Cc:  <stable@vger.kernel.org>
Acked-by: Jonathan Cameron <Jonathan.Cameron@huawei.com>
Link: https://lore.kernel.org/r/20231217200703.719876-3-srinivas.pandruvada@linux.intel.com
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>

diff --git a/drivers/iio/light/hid-sensor-als.c b/drivers/iio/light/hid-sensor-als.c
index d44b3f30ae4a9b234710c8ab79034b0ee7e63d2f..5cd27f04b45e6d911ae53e7574a916455149c2a5 100644 (file)
--- a/drivers/iio/light/hid-sensor-als.c
+++ b/drivers/iio/light/hid-sensor-als.c
@@ -14,9 +14,8 @@
 #include "../common/hid-sensors/hid-sensor-trigger.h"
 
 enum {
-       CHANNEL_SCAN_INDEX_INTENSITY,
-       CHANNEL_SCAN_INDEX_ILLUM,
-       CHANNEL_SCAN_INDEX_COLOR_TEMP,
+       CHANNEL_SCAN_INDEX_INTENSITY = 0,
+       CHANNEL_SCAN_INDEX_ILLUM = 1,
        CHANNEL_SCAN_INDEX_MAX
 };
 
@@ -66,16 +65,6 @@ 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)
 };
 
@@ -114,11 +103,6 @@ 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;
@@ -239,10 +223,6 @@ 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);
@@ -278,19 +258,6 @@ static int als_parse_report(struct platform_device *pdev,
                        st->als[i].report_id);
        }
 
-       ret = sensor_hub_input_get_attribute_info(hsdev, HID_INPUT_REPORT,
-                               usage_id,
-                               HID_USAGE_SENSOR_LIGHT_COLOR_TEMPERATURE,
-                               &st->als[CHANNEL_SCAN_INDEX_COLOR_TEMP]);
-       if (ret < 0)
-               return ret;
-       als_adjust_channel_bit_mask(channels, CHANNEL_SCAN_INDEX_COLOR_TEMP,
-                               st->als[CHANNEL_SCAN_INDEX_COLOR_TEMP].size);
-
-       dev_dbg(&pdev->dev, "als %x:%x\n",
-               st->als[CHANNEL_SCAN_INDEX_COLOR_TEMP].index,
-               st->als[CHANNEL_SCAN_INDEX_COLOR_TEMP].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);

diff --git a/include/linux/hid-sensor-ids.h b/include/linux/hid-sensor-ids.h
index 8af4fb3e0254e99e247b756f22e74c25a6cff172..13b1e65fbdccb710ed4fa25ae9f4f8ff2ff298be 100644 (file)
--- a/include/linux/hid-sensor-ids.h
+++ b/include/linux/hid-sensor-ids.h
@@ -21,7 +21,6 @@
 #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