diff options
| author | Basavaraj Natikar <Basavaraj.Natikar@amd.com> | 2023-12-20 12:30:42 +0530 |
|---|---|---|
| committer | Jiri Kosina <jkosina@suse.com> | 2024-01-04 15:19:17 +0100 |
| commit | 584f35a3647d42980af495fc0bc5c51eb174aa35 (patch) | |
| tree | 330e1475772898a343eb0d34f2523182caae67a0 /drivers/hid | |
| parent | b5b0774d53bb81bddbf8c609b3f183d4af6e91da (diff) | |
| download | linux-584f35a3647d42980af495fc0bc5c51eb174aa35.tar.gz | |
HID: amd_sfh: Add a new interface for exporting ALS data
AMDSFH has information about the Ambient light via the Ambient
Light Sensor (ALS) which is part of the AMD sensor fusion hub.
Add a new interface to export this information, where other drivers like
PMF can use this information to enhance user experiences.
Link: https://lore.kernel.org/all/ad064333-48a4-4cfa-9428-69e8a7c44667@redhat.com/
Reviewed-by: Mario Limonciello <mario.limonciello@amd.com>
Co-developed-by: Shyam Sundar S K <Shyam-sundar.S-k@amd.com>
Signed-off-by: Shyam Sundar S K <Shyam-sundar.S-k@amd.com>
Signed-off-by: Basavaraj Natikar <Basavaraj.Natikar@amd.com>
Signed-off-by: Jiri Kosina <jkosina@suse.com>
Diffstat (limited to 'drivers/hid')
| -rw-r--r-- | drivers/hid/amd-sfh-hid/amd_sfh_common.h | 1 | ||||
| -rw-r--r-- | drivers/hid/amd-sfh-hid/sfh1_1/amd_sfh_init.c | 6 | ||||
| -rw-r--r-- | drivers/hid/amd-sfh-hid/sfh1_1/amd_sfh_interface.c | 22 |
3 files changed, 29 insertions, 0 deletions
diff --git a/drivers/hid/amd-sfh-hid/amd_sfh_common.h b/drivers/hid/amd-sfh-hid/amd_sfh_common.h index cd57037bf21741..a1950bc6e6cefe 100644 --- a/drivers/hid/amd-sfh-hid/amd_sfh_common.h +++ b/drivers/hid/amd-sfh-hid/amd_sfh_common.h @@ -39,6 +39,7 @@ struct amd_mp2_sensor_info { struct sfh_dev_status { bool is_hpd_present; + bool is_als_present; }; struct amd_mp2_dev { diff --git a/drivers/hid/amd-sfh-hid/sfh1_1/amd_sfh_init.c b/drivers/hid/amd-sfh-hid/sfh1_1/amd_sfh_init.c index 0351b0fd394a98..9dbe6f4cb29426 100644 --- a/drivers/hid/amd-sfh-hid/sfh1_1/amd_sfh_init.c +++ b/drivers/hid/amd-sfh-hid/sfh1_1/amd_sfh_init.c @@ -77,6 +77,9 @@ static int amd_sfh_hid_client_deinit(struct amd_mp2_dev *privdata) case HPD_IDX: privdata->dev_en.is_hpd_present = false; break; + case ALS_IDX: + privdata->dev_en.is_als_present = false; + break; } if (cl_data->sensor_sts[i] == SENSOR_ENABLED) { @@ -188,6 +191,9 @@ static int amd_sfh1_1_hid_client_init(struct amd_mp2_dev *privdata) case HPD_IDX: privdata->dev_en.is_hpd_present = true; break; + case ALS_IDX: + privdata->dev_en.is_als_present = true; + break; } } dev_dbg(dev, "sid 0x%x (%s) status 0x%x\n", diff --git a/drivers/hid/amd-sfh-hid/sfh1_1/amd_sfh_interface.c b/drivers/hid/amd-sfh-hid/sfh1_1/amd_sfh_interface.c index 197b828fc6a0ba..ae36312bc23650 100644 --- a/drivers/hid/amd-sfh-hid/sfh1_1/amd_sfh_interface.c +++ b/drivers/hid/amd-sfh-hid/sfh1_1/amd_sfh_interface.c @@ -103,12 +103,34 @@ static int amd_sfh_hpd_info(u8 *user_present) return 0; } +static int amd_sfh_als_info(u32 *ambient_light) +{ + struct sfh_als_data als_data; + void __iomem *sensoraddr; + + if (!ambient_light) + return -EINVAL; + + if (!emp2 || !emp2->dev_en.is_als_present) + return -ENODEV; + + sensoraddr = emp2->vsbase + + (ALS_IDX * SENSOR_DATA_MEM_SIZE_DEFAULT) + + OFFSET_SENSOR_DATA_DEFAULT; + memcpy_fromio(&als_data, sensoraddr, sizeof(struct sfh_als_data)); + *ambient_light = amd_sfh_float_to_int(als_data.lux); + + return 0; +} + int amd_get_sfh_info(struct amd_sfh_info *sfh_info, enum sfh_message_type op) { if (sfh_info) { switch (op) { case MT_HPD: return amd_sfh_hpd_info(&sfh_info->user_present); + case MT_ALS: + return amd_sfh_als_info(&sfh_info->ambient_light); } } return -EINVAL; |