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disp: msm: Register for reboot_notifier

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

Port from 7445d2d.

Change-Id: I8b6d48205ba819f0d36ad7218852241baa33f014
Signed-off-by: Bang Nguyen <bangnguyen@motorola.com>
Reviewed-on: https://gerrit.mot.com/1697588
SLTApproved: Slta Waiver
SME-Granted: SME Approvals Granted
Tested-by: Jira Key
Reviewed-by: Guobin Zhang <zhanggb@motorola.com>
Submit-Approved: Jira Key
This commit is contained in:
Bang Nguyen 2019-03-12 08:18:12 -05:00 • committed by tongkun1
commit ade79873ca
2 changed files with 35 additions and 0 deletions
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33
msm/msm_drv.c
View file

@ -43,6 +43,7 @@
#include <drm/drm_of.h>
#include <drm/drm_auth.h>
#include <drm/drm_probe_helper.h>
#include <linux/reboot.h>
#include "msm_drv.h"
#include "msm_gem.h"
@ -428,6 +429,11 @@ 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);
@ -755,6 +761,23 @@ static struct msm_kms *_msm_drm_component_init_helper(
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_device_init(struct platform_device *pdev,
struct drm_driver *drv)
{
@ -938,6 +961,16 @@ static int msm_drm_component_init(struct device *dev)
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:

2
msm/msm_drv.h
View file

@ -38,6 +38,7 @@
#include <linux/sde_vm_event.h>
#include <linux/sizes.h>
#include <linux/kthread.h>
#include <linux/notifier.h>
#include <drm/drmP.h>
#include <drm/drm_atomic.h>
@ -969,6 +970,7 @@ struct msm_drm_private {
struct mutex vm_client_lock;
struct list_head vm_client_list;
struct notifier_block msm_drv_notifier;
};
/* get struct msm_kms * from drm_device * */