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HID: amd_sfh: Add support for sensor discovery

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Sensor discovery status fails in case of broken sensors or
platform not supported. Hence disable driver on failure
of sensor discovery.

Signed-off-by: Mario Limonciello <mario.limonciello@amd.com>
Signed-off-by: Basavaraj Natikar <Basavaraj.Natikar@amd.com>
Signed-off-by: Jiri Kosina <jkosina@suse.cz>
This commit is contained in:
Basavaraj Natikar 2022-05-09 18:50:20 +05:30 committed by Jiri Kosina
parent 62f8857b2d
commit b5d7f43e97
3 changed files with 22 additions and 0 deletions
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11
drivers/hid/amd-sfh-hid/amd_sfh_client.c
View file

@ -227,6 +227,17 @@ int amd_sfh_hid_client_init(struct amd_mp2_dev *privdata)
dev_dbg(dev, "sid 0x%x status 0x%x\n",
cl_data->sensor_idx[i], cl_data->sensor_sts[i]);
}
if (privdata->mp2_ops->discovery_status &&
privdata->mp2_ops->discovery_status(privdata) == 0) {
amd_sfh_hid_client_deinit(privdata);
for (i = 0; i < cl_data->num_hid_devices; i++) {
devm_kfree(dev, cl_data->feature_report[i]);
devm_kfree(dev, in_data->input_report[i]);
devm_kfree(dev, cl_data->report_descr[i]);
}
dev_warn(dev, "Failed to discover, sensors not enabled\n");
return -EOPNOTSUPP;
}
schedule_delayed_work(&cl_data->work_buffer, msecs_to_jiffies(AMD_SFH_IDLE_LOOP));
return 0;

7
drivers/hid/amd-sfh-hid/amd_sfh_pcie.c
View file

@ -130,6 +130,12 @@ static int amd_sfh_irq_init_v2(struct amd_mp2_dev *privdata)
return 0;
}
static int amd_sfh_dis_sts_v2(struct amd_mp2_dev *privdata)
{
return (readl(privdata->mmio + AMD_P2C_MSG(1)) &
SENSOR_DISCOVERY_STATUS_MASK) >> SENSOR_DISCOVERY_STATUS_SHIFT;
}
void amd_start_sensor(struct amd_mp2_dev *privdata, struct amd_mp2_sensor_info info)
{
union sfh_cmd_param cmd_param;
@ -245,6 +251,7 @@ static const struct amd_mp2_ops amd_sfh_ops_v2 = {
.response = amd_sfh_wait_response_v2,
.clear_intr = amd_sfh_clear_intr_v2,
.init_intr = amd_sfh_irq_init_v2,
.discovery_status = amd_sfh_dis_sts_v2,
};
static const struct amd_mp2_ops amd_sfh_ops = {

4
drivers/hid/amd-sfh-hid/amd_sfh_pcie.h
View file

@ -39,6 +39,9 @@
#define AMD_SFH_IDLE_LOOP 200
#define SENSOR_DISCOVERY_STATUS_MASK GENMASK(5, 3)
#define SENSOR_DISCOVERY_STATUS_SHIFT 3
/* SFH Command register */
union sfh_cmd_base {
u32 ul;
@ -143,5 +146,6 @@ struct amd_mp2_ops {
int (*response)(struct amd_mp2_dev *mp2, u8 sid, u32 sensor_sts);
void (*clear_intr)(struct amd_mp2_dev *privdata);
int (*init_intr)(struct amd_mp2_dev *privdata);
int (*discovery_status)(struct amd_mp2_dev *privdata);
};
#endif