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disp: msm: Register for reboot_notifier

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Since implementing the factory_kill feature, then the msm_drv needs
to register for reboot_notifier to shut down the display accordingly.

Port from: 0d7643c

Change-Id: I08a121c87e042d4ea1fcb0f1d730e0519801a8f9
Signed-off-by: Bang Nguyen <bangnguyen@motorola.com>
Reviewed-on: https://gerrit.mot.com/1444412
SLTApproved: Slta Waiver
SME-Granted: SME Approvals Granted
Tested-by: Jira Key
Submit-Approved: Jira Key
Reviewed-on: https://gerrit.mot.com/1509815
Reviewed-by: Hua Tan <tanhua1@motorola.com>
This commit is contained in:
Bang Nguyen authored and Gilberto Gambugge committed 2023-06-01 00:43:20 -03:00
1 parent f849421b27
commit b0652e4563
2 files changed
+36
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msm/msm_drv.c
+33
View File
@@ -41,6 +41,7 @@
#include <linux/kthread.h>
#include <uapi/linux/sched/types.h>
#include <drm/drm_of.h>
#include <linux/reboot.h>
#include "msm_drv.h"
#include "msm_kms.h"
@@ -379,6 +380,11 @@ static int msm_drm_uninit(struct device *dev)
priv->registered = false;
}
if (priv->msm_drv_notifier.notifier_call) {
unregister_reboot_notifier(&priv->msm_drv_notifier);
priv->msm_drv_notifier.notifier_call = NULL;
}
#ifdef CONFIG_DRM_FBDEV_EMULATION
if (fbdev && priv->fbdev)
msm_fbdev_free(ddev);
@@ -697,6 +703,23 @@ static struct msm_kms *_msm_drm_init_helper(struct msm_drm_private *priv,
return kms;
}
static void msm_pdev_shutdown(struct platform_device *pdev);
static int msm_drv_shutdown_notifier_cb(struct notifier_block *nb,
unsigned long event, void *unused)
{
struct device *dev;
struct platform_device *pdev;
struct msm_drm_private *priv = container_of(nb, struct msm_drm_private,
msm_drv_notifier);
dev = priv->dev->dev;
pdev = to_platform_device(dev);
dev_warn(dev, "prepare to shutdown\n");
msm_pdev_shutdown(pdev);
return NOTIFY_DONE;
}
static int msm_drm_init(struct device *dev, struct drm_driver *drv)
{
struct platform_device *pdev = to_platform_device(dev);
@@ -827,6 +850,16 @@ static int msm_drm_init(struct device *dev, struct drm_driver *drv)
drm_kms_helper_poll_init(ddev);
priv->msm_drv_notifier.notifier_call = msm_drv_shutdown_notifier_cb;
priv->msm_drv_notifier.next = NULL;
priv->msm_drv_notifier.priority = 1;
ret = register_reboot_notifier(&priv->msm_drv_notifier);
if (ret) {
dev_err(dev, "Failed to register for reboot_notifier. ret = %d\n",
ret);
goto fail;
}
return 0;
fail:
msm/msm_drv.h
+3
View File
@@ -36,6 +36,7 @@
#include <linux/sde_io_util.h>
#include <asm/sizes.h>
#include <linux/kthread.h>
#include <linux/notifier.h>
#include <drm/drmP.h>
#include <drm/drm_atomic.h>
@@ -731,6 +732,8 @@ struct msm_drm_private {
/* update the flag when msm driver receives shutdown notification */
bool shutdown_in_progress;
struct notifier_block msm_drv_notifier;
};
/* get struct msm_kms * from drm_device * */