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HID: amd_sfh: Add illuminance mask to limit ALS max value 

ALS illuminance value present only in first 15 bits from SFH firmware
for V2 platforms. Hence added a mask of 15 bit to limit ALS max
illuminance values to get correct illuminance value.

Fixes: 0aad9c95eb ("HID: amd_sfh: Extend ALS support for newer AMD platform")
Signed-off-by: Basavaraj Natikar <Basavaraj.Natikar@amd.com>
Signed-off-by: Jiri Kosina <jkosina@suse.cz>
This commit is contained in:
Basavaraj Natikar 2022-01-31 22:48:33 +05:30 committed by Jiri Kosina
parent a7072c01c3
commit 91aaea527b
1 changed files with 3 additions and 1 deletions
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4
drivers/hid/amd-sfh-hid/hid_descriptor/amd_sfh_hid_desc.c
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@ -27,6 +27,7 @@
#define HID_USAGE_SENSOR_STATE_READY_ENUM 0x02
#define HID_USAGE_SENSOR_STATE_INITIALIZING_ENUM 0x05
#define HID_USAGE_SENSOR_EVENT_DATA_UPDATED_ENUM 0x04
#define ILLUMINANCE_MASK GENMASK(14, 0)
int get_report_descriptor(int sensor_idx, u8 *rep_desc)
{
@ -246,7 +247,8 @@ u8 get_input_report(u8 current_index, int sensor_idx, int report_id, struct amd_
get_common_inputs(&als_input.common_property, report_id);
/* For ALS ,V2 Platforms uses C2P_MSG5 register instead of DRAM access method */
if (supported_input == V2_STATUS)
als_input.illuminance_value = (int)readl(privdata->mmio + AMD_C2P_MSG(5));
als_input.illuminance_value =
readl(privdata->mmio + AMD_C2P_MSG(5)) & ILLUMINANCE_MASK;
else
als_input.illuminance_value =
(int)sensor_virt_addr[0] / AMD_SFH_FW_MULTIPLIER;