drivers/hid/amd-sfh-hid/sfh1_1/amd_sfh_init.c

Source file repositories/reference/linux-study-clean/drivers/hid/amd-sfh-hid/sfh1_1/amd_sfh_init.c

File Facts

System
Linux kernel
Corpus path
drivers/hid/amd-sfh-hid/sfh1_1/amd_sfh_init.c
Extension
.c
Size
11613 bytes
Lines
431
Domain
Driver Families
Bucket
drivers/hid
Inferred role
Driver Families: implementation source
Status
source implementation candidate

Why This File Exists

Repeatable hardware-adapter layer. Deep compatibility for every driver is out of scope; this atlas records patterns, probe lifecycles, bus glue, IRQ/DMA usage, and links back to core abstractions.

Dependency Surface

Detected Declarations

Annotated Snippet

switch (i) {
		case ACCEL_IDX:
		case GYRO_IDX:
		case MAG_IDX:
		case SRA_IDX:
		case ALS_IDX:
		case HPD_IDX:
			if (BIT(i) & slist->sl.sensors)
				sensor_id[num_of_sensors++] = i;
			break;
		}
	}

	return num_of_sensors;
}

static u32 amd_sfh_wait_for_response(struct amd_mp2_dev *mp2, u8 sid, u32 cmd_id)
{
	if (mp2->mp2_ops->response)
		return mp2->mp2_ops->response(mp2, sid, cmd_id);

	return 0;
}

static const char *get_sensor_name(int idx)
{
	switch (idx) {
	case ACCEL_IDX:
		return "accelerometer";
	case GYRO_IDX:
		return "gyroscope";
	case MAG_IDX:
		return "magnetometer";
	case SRA_IDX:
		return "SRA";
	case ALS_IDX:
		return "ALS";
	case HPD_IDX:
		return "HPD";
	default:
		return "unknown sensor type";
	}
}

static int amd_sfh_hid_client_deinit(struct amd_mp2_dev *privdata)
{
	struct amdtp_cl_data *cl_data = privdata->cl_data;
	int i, status;

	for (i = 0; i < cl_data->num_hid_devices; i++) {
		switch (cl_data->sensor_idx[i]) {
		case HPD_IDX:
			privdata->dev_en.is_hpd_present = false;
			break;
		case ALS_IDX:
			privdata->dev_en.is_als_present = false;
			break;
		case SRA_IDX:
			privdata->dev_en.is_sra_present = false;
			break;
		}

		if (cl_data->sensor_sts[i] == SENSOR_ENABLED) {
			privdata->mp2_ops->stop(privdata, cl_data->sensor_idx[i]);
			status = amd_sfh_wait_for_response
					(privdata, cl_data->sensor_idx[i], DISABLE_SENSOR);
			if (status == 0)
				cl_data->sensor_sts[i] = SENSOR_DISABLED;
			dev_dbg(&privdata->pdev->dev, "stopping sid 0x%x (%s) status 0x%x\n",
				cl_data->sensor_idx[i], get_sensor_name(cl_data->sensor_idx[i]),
				cl_data->sensor_sts[i]);
		}
	}

	cancel_delayed_work_sync(&cl_data->work);
	cancel_delayed_work_sync(&cl_data->work_buffer);
	amdtp_hid_remove(cl_data);

	return 0;
}

static int amd_sfh1_1_hid_client_init(struct amd_mp2_dev *privdata)
{
	struct amd_input_data *in_data = &privdata->in_data;
	struct amdtp_cl_data *cl_data = privdata->cl_data;
	struct amd_mp2_ops *mp2_ops = privdata->mp2_ops;
	struct amd_mp2_sensor_info info;
	struct request_list *req_list;
	u32 feature_report_size;
	u32 input_report_size;

Annotation

Implementation Notes