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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>
This commit is contained in:
Basavaraj Natikar 2023-12-20 12:30:42 +05:30 committed by Jiri Kosina
parent b5b0774d53
commit 584f35a364
4 changed files with 33 additions and 0 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

1
drivers/hid/amd-sfh-hid/amd_sfh_common.h
View File

@ -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 {

6
drivers/hid/amd-sfh-hid/sfh1_1/amd_sfh_init.c
View File

@ -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",

22
drivers/hid/amd-sfh-hid/sfh1_1/amd_sfh_interface.c
View File

@ -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;

4
include/linux/amd-pmf-io.h
View File

@ -17,9 +17,11 @@
/**
* enum sfh_message_type - Query the SFH message type
* @MT_HPD: Message ID to know the Human presence info from MP2 FW
* @MT_ALS: Message ID to know the Ambient light info from MP2 FW
*/
enum sfh_message_type {
MT_HPD,
MT_ALS,
};
/**
@ -36,9 +38,11 @@ enum sfh_hpd_info {
/**
* struct amd_sfh_info - get HPD sensor info from MP2 FW
* @ambient_light: Populates the ambient light information
* @user_present: Populates the user presence information
*/
struct amd_sfh_info {
u32 ambient_light;
u8 user_present;
};