HID: amd_sfh: Add light chromaticity support

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: Jiri Kosina <jkosina@suse.cz>
Link: https://lore.kernel.org/r/20230919081054.2050714-9-Basavaraj.Natikar@amd.comSigned-off-by: Jonathan Cameron <Jonathan.Cameron@huawei.com>

drivers/hid/amd-sfh-hid/hid_descriptor/amd_sfh_hid_desc.c

@@ -258,8 +258,11 @@ static u8 get_input_report(u8 current_index, int sensor_idx, int report_id,
 			als_input.illuminance_value =
 				(int)sensor_virt_addr[0] / AMD_SFH_FW_MULTIPLIER;
 
-		if (sensor_idx == ACS_IDX)
+		if (sensor_idx == ACS_IDX) {
 			als_input.light_color_temp = sensor_virt_addr[1];
+			als_input.chromaticity_x_value = sensor_virt_addr[2];
+			als_input.chromaticity_y_value = sensor_virt_addr[3];
+		}
 
 		report_size = sizeof(als_input);
 		memcpy(input_report, &als_input, sizeof(als_input));

drivers/hid/amd-sfh-hid/hid_descriptor/amd_sfh_hid_desc.h

@@ -100,6 +100,8 @@ struct als_input_report {
 	/* values specific to this sensor */
 	int illuminance_value;
 	int light_color_temp;
+	int chromaticity_x_value;
+	int chromaticity_y_value;
 } __packed;
 
 struct hpd_feature_report {

drivers/hid/amd-sfh-hid/hid_descriptor/amd_sfh_hid_report_desc.h

@@ -648,6 +648,20 @@ static const u8 als_report_descriptor[] = {
 0x75, 32,		/* HID report size(32) */
 0x95, 1,		/* HID report count (1) */
 0X81, 0x02,		/* HID Input (Data_Arr_Abs) */
+0x0A, 0xD4, 0x04,       /* HID usage sensor data light chromaticity_x */
+0x17, 0x00, 0x00, 0x01, 0x80,	 /* HID logical Min_32 */
+0x27, 0xFF, 0xFF, 0xFF, 0x7F,	 /* HID logical Max_32 */
+0x55, 0x0,		/* HID unit exponent(0x0) */
+0x75, 32,		/* HID report size(32) */
+0x95, 1,		/* HID report count(1) */
+0X81, 0x02,		/* HID Input (Data_Var_Abs) */
+0x0A, 0xD5, 0x04,       /* HID usage sensor data light chromaticity_y */
+0x17, 0x00, 0x00, 0x01, 0x80,	 /* HID logical Min_32 */
+0x27, 0xFF, 0xFF, 0xFF, 0x7F,	 /* HID logical Max_32 */
+0x55, 0x0,		/* HID unit exponent(0x0) */
+0x75, 32,		/* HID report size(32) */
+0x95, 1,		/* HID report count (1) */
+0X81, 0x02,		/* HID Input (Data_Var_Abs) */
 0xC0			/* HID end collection */
 };