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

73
drivers/cam_isp/cam_isp_dev.c
View File

@@ -18,6 +18,7 @@
#include "cam_node.h"
#include "cam_debug_util.h"
#include "cam_smmu_api.h"
#include "camera_main.h"
static struct cam_isp_dev g_isp_dev;
@@ -90,28 +91,8 @@ static const struct v4l2_subdev_internal_ops cam_isp_subdev_internal_ops = {
.open = cam_isp_subdev_open,
};
static int cam_isp_dev_remove(struct platform_device *pdev)
{
int rc = 0;
int i;
/* clean up resources */
for (i = 0; i < CAM_CTX_MAX; i++) {
rc = cam_isp_context_deinit(&g_isp_dev.ctx_isp[i]);
if (rc)
CAM_ERR(CAM_ISP, "ISP context %d deinit failed",
i);
}
rc = cam_subdev_remove(&g_isp_dev.sd);
if (rc)
CAM_ERR(CAM_ISP, "Unregister failed");
memset(&g_isp_dev, 0, sizeof(g_isp_dev));
return 0;
}
static int cam_isp_dev_probe(struct platform_device *pdev)
static int cam_isp_dev_component_bind(struct device *dev,
struct device *master_dev, void *data)
{
int rc = -1;
int i;
@@ -119,6 +100,7 @@ static int cam_isp_dev_probe(struct platform_device *pdev)
struct cam_node *node;
const char *compat_str = NULL;
uint32_t isp_device_type;
struct platform_device *pdev = to_platform_device(dev);
int iommu_hdl = -1;
@@ -179,7 +161,7 @@ static int cam_isp_dev_probe(struct platform_device *pdev)
mutex_init(&g_isp_dev.isp_mutex);
CAM_INFO(CAM_ISP, "Camera ISP probe complete");
CAM_INFO(CAM_ISP, "ISP HW component bound successfully");
return 0;
unregister:
@@ -188,8 +170,51 @@ err:
return rc;
}
static void cam_isp_dev_component_unbind(struct device *dev,
struct device *master_dev, void *data)
{
int rc = 0;
int i;
static struct platform_driver isp_driver = {
/* clean up resources */
for (i = 0; i < CAM_CTX_MAX; i++) {
rc = cam_isp_context_deinit(&g_isp_dev.ctx_isp[i]);
if (rc)
CAM_ERR(CAM_ISP, "ISP context %d deinit failed",
i);
}
rc = cam_subdev_remove(&g_isp_dev.sd);
if (rc)
CAM_ERR(CAM_ISP, "Unregister failed rc: %d", rc);
memset(&g_isp_dev, 0, sizeof(g_isp_dev));
}
const static struct component_ops cam_isp_dev_component_ops = {
.bind = cam_isp_dev_component_bind,
.unbind = cam_isp_dev_component_unbind,
};
static int cam_isp_dev_remove(struct platform_device *pdev)
{
component_del(&pdev->dev, &cam_isp_dev_component_ops);
return 0;
}
static int cam_isp_dev_probe(struct platform_device *pdev)
{
int rc = 0;
CAM_DBG(CAM_ISP, "Adding ISP dev component");
rc = component_add(&pdev->dev, &cam_isp_dev_component_ops);
if (rc)
CAM_ERR(CAM_ISP, "failed to add component rc: %d", rc);
return rc;
}
struct platform_driver isp_driver = {
.probe = cam_isp_dev_probe,
.remove = cam_isp_dev_remove,
.driver = {