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authorBasavaraj Natikar <Basavaraj.Natikar@amd.com>2023-12-20 10:00:42 +0300
committerJiri Kosina <jkosina@suse.com>2024-01-04 17:19:17 +0300
commit584f35a3647d42980af495fc0bc5c51eb174aa35 (patch)
tree330e1475772898a343eb0d34f2523182caae67a0 /drivers/hid/amd-sfh-hid
parentb5b0774d53bb81bddbf8c609b3f183d4af6e91da (diff)
downloadlinux-584f35a3647d42980af495fc0bc5c51eb174aa35.tar.xz
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/amd-sfh-hid')
-rw-r--r--drivers/hid/amd-sfh-hid/amd_sfh_common.h1
-rw-r--r--drivers/hid/amd-sfh-hid/sfh1_1/amd_sfh_init.c6
-rw-r--r--drivers/hid/amd-sfh-hid/sfh1_1/amd_sfh_interface.c22
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 cd57037bf217..a1950bc6e6ce 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 0351b0fd394a..9dbe6f4cb294 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 197b828fc6a0..ae36312bc236 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;