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drm: sun4i: Add support for suspending the display driver

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Shut down the display engine during suspend.

Signed-off-by: Ondrej Jirman <megous@megous.com>
Signed-off-by: Maxime Ripard <maxime@cerno.tech>
Link: https://patchwork.freedesktop.org/patch/msgid/20191029112846.3604925-1-megous@megous.com
This commit is contained in:
Ondrej Jirman 2019-10-29 12:28:46 +01:00 committed by Maxime Ripard
parent 42240c90e3
commit 624b4b48d9
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GPG Key ID: E3EF0D6F671851C5
1 changed files with 22 additions and 0 deletions
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22
drivers/gpu/drm/sun4i/sun4i_drv.c
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@ -346,6 +346,27 @@ static int sun4i_drv_add_endpoints(struct device *dev,
return count;
}
#ifdef CONFIG_PM_SLEEP
static int sun4i_drv_drm_sys_suspend(struct device *dev)
{
struct drm_device *drm = dev_get_drvdata(dev);
return drm_mode_config_helper_suspend(drm);
}
static int sun4i_drv_drm_sys_resume(struct device *dev)
{
struct drm_device *drm = dev_get_drvdata(dev);
return drm_mode_config_helper_resume(drm);
}
#endif
static const struct dev_pm_ops sun4i_drv_drm_pm_ops = {
SET_SYSTEM_SLEEP_PM_OPS(sun4i_drv_drm_sys_suspend,
sun4i_drv_drm_sys_resume)
};
static int sun4i_drv_probe(struct platform_device *pdev)
{
struct component_match *match = NULL;
@ -418,6 +439,7 @@ static struct platform_driver sun4i_drv_platform_driver = {
.driver = {
.name = "sun4i-drm",
.of_match_table = sun4i_drv_of_table,
.pm = &sun4i_drv_drm_pm_ops,
},
};
module_platform_driver(sun4i_drv_platform_driver);