samsung-sm8650/android_kernel_samsung_sm8650-modules
1
0
Fork 0
Code Issues Pull Requests Actions Packages Projects Releases Wiki Activity

msm: camera: common: Add component helper support in camera

Browse Source 
Due to the asynchronous nature of platform probes, inter
dependency between drivers needs to be taken care during
kernel boot up. Component helper provides the facility of
adding matching drivers in a list ordered in the way we want
to bind those drivers. The CRM driver acts as component master
to make sure all slave drivers are bound before it returns
from its own bind call. Add support for serializing platform
probes through component framework.

CRs-Fixed: 2584631
Change-Id: I345da1d2b9cccf6021ac6fc899143013b7714ec4
Signed-off-by: Mukund Madhusudan Atre <matre@codeaurora.org>
This commit is contained in:
Mukund Madhusudan Atre
2020-01-25 21:15:38 -08:00
parent 8d05aad1b0
commit 5cb000ee7f
44 changed files with 1826 additions and 615 deletions
Download Patch File Download Diff File Expand all files Collapse all files

33
drivers/cam_sync/cam_sync.c
View File

@@ -12,6 +12,7 @@
#include "cam_sync_util.h"
#include "cam_debug_util.h"
#include "cam_common_util.h"
#include "camera_main.h"
#ifdef CONFIG_MSM_GLOBAL_SYNX
#include <synx_api.h>
@@ -1016,10 +1017,12 @@ static void cam_sync_register_synx_bind_ops(void)
}
#endif
static int cam_sync_probe(struct platform_device *pdev)
static int cam_sync_component_bind(struct device *dev,
struct device *master_dev, void *data)
{
int rc;
int idx;
struct platform_device *pdev = to_platform_device(dev);
sync_dev = kzalloc(sizeof(*sync_dev), GFP_KERNEL);
if (!sync_dev)
@@ -1091,6 +1094,7 @@ static int cam_sync_probe(struct platform_device *pdev)
#ifdef CONFIG_MSM_GLOBAL_SYNX
cam_sync_register_synx_bind_ops();
#endif
CAM_DBG(CAM_SYNC, "Component bound successfully");
return rc;
v4l2_fail:
@@ -1105,7 +1109,8 @@ vdev_fail:
return rc;
}
static int cam_sync_remove(struct platform_device *pdev)
static void cam_sync_component_unbind(struct device *dev,
struct device *master_dev, void *data)
{
int i;
@@ -1117,9 +1122,31 @@ static int cam_sync_remove(struct platform_device *pdev)
for (i = 0; i < CAM_SYNC_MAX_OBJS; i++)
spin_lock_init(&sync_dev->row_spinlocks[i]);
kfree(sync_dev);
sync_dev = NULL;
}
const static struct component_ops cam_sync_component_ops = {
.bind = cam_sync_component_bind,
.unbind = cam_sync_component_unbind,
};
static int cam_sync_probe(struct platform_device *pdev)
{
int rc = 0;
CAM_DBG(CAM_SYNC, "Adding Sync component");
rc = component_add(&pdev->dev, &cam_sync_component_ops);
if (rc)
CAM_ERR(CAM_SYNC, "failed to add component rc: %d", rc);
return rc;
}
static int cam_sync_remove(struct platform_device *pdev)
{
component_del(&pdev->dev, &cam_sync_component_ops);
return 0;
}
@@ -1130,7 +1157,7 @@ static const struct of_device_id cam_sync_dt_match[] = {
MODULE_DEVICE_TABLE(of, cam_sync_dt_match);
static struct platform_driver cam_sync_driver = {
struct platform_driver cam_sync_driver = {
.probe = cam_sync_probe,
.remove = cam_sync_remove,
.driver = {