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Dubai: Add retries for sensor id matching

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details:
Add retries in the sensor id matching during kernel camera
probe to handle any transient failures

Change-Id: I71e43566e4d9f8f27cac1f2a96470bfb76fc9663
Signed-off-by: huqian4 <[email protected]>
Reviewed-on: https://gerrit.mot.com/2228991
SLTApproved: Slta Waiver
SME-Granted: SME Approvals Granted
Tested-by: Jira Key
Reviewed-by: <[email protected]>
Reviewed-by: Long Cheng <[email protected]>
Reviewed-by: Zhichao Chen <[email protected]>
Submit-Approved: Jira Key
This commit is contained in:
huqian4 2022-03-30 09:45:43 +08:00 • committed by zhaoji1
commit b26a4c2545
1 changed files with 27 additions and 0 deletions
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27
drivers/cam_sensor_module/cam_sensor/cam_sensor_core.c
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@ -749,6 +749,10 @@ void cam_sensor_shutdown(struct cam_sensor_ctrl_t *s_ctrl)
int cam_sensor_match_id(struct cam_sensor_ctrl_t *s_ctrl)
{
int rc = 0;
#ifdef CONFIG_CAM_SENSOR_PROBE_RETRY
int retries = 5;
bool matched = false;
#endif
uint32_t chipid = 0;
struct cam_camera_slave_info *slave_info;
@ -760,6 +764,28 @@ int cam_sensor_match_id(struct cam_sensor_ctrl_t *s_ctrl)
return -EINVAL;
}
#ifdef CONFIG_CAM_SENSOR_PROBE_RETRY
while (retries-- && !matched) {
rc = camera_io_dev_read(
&(s_ctrl->io_master_info),
slave_info->sensor_id_reg_addr,
&chipid,
s_ctrl->sensor_probe_addr_type,
s_ctrl->sensor_probe_data_type);
CAM_INFO(CAM_SENSOR, "read id: 0x%x expected id 0x%x:",
chipid, slave_info->sensor_id);
if (cam_sensor_id_by_mask(s_ctrl, chipid) == slave_info->sensor_id)
matched = true;
if (!matched && !retries) {
CAM_ERR(CAM_SENSOR, "Failed read id: 0x%x expected id 0x%x:",
chipid, slave_info->sensor_id);
}
}
#else
rc = camera_io_dev_read(
&(s_ctrl->io_master_info),
slave_info->sensor_id_reg_addr,
@ -775,6 +801,7 @@ int cam_sensor_match_id(struct cam_sensor_ctrl_t *s_ctrl)
chipid, slave_info->sensor_id);
return -ENODEV;
}
#endif
return rc;
}