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drm/exynos: add PM functions for hdmi and mixer 

This patch supports the PM for hdmi and mixer. Turn off hdmi and mixer
when suspended, and when resume, will turn on them by hdmi hotplug
detection if hdmi is attached.

Signed-off-by: Joonyoung Shim <jy0922.shim@samsung.com>
Signed-off-by: Kyungmin Park <kyungmin.park@samsung.com>
Signed-off-by: Inki Dae <inki.dae@samsung.com>
This commit is contained in:
Joonyoung Shim 2012-04-23 19:35:51 +09:00 committed by Inki Dae
parent cf8fc4f10e
commit ab27af85e3
2 changed files with 47 additions and 0 deletions
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32
drivers/gpu/drm/exynos/exynos_hdmi.c
View File

@ -2367,11 +2367,43 @@ static int __devexit hdmi_remove(struct platform_device *pdev)
return 0;
}
#ifdef CONFIG_PM_SLEEP
static int hdmi_suspend(struct device *dev)
{
struct exynos_drm_hdmi_context *ctx = get_hdmi_context(dev);
struct hdmi_context *hdata = ctx->ctx;
disable_irq(hdata->internal_irq);
disable_irq(hdata->external_irq);
hdata->hpd = false;
if (ctx->drm_dev)
drm_helper_hpd_irq_event(ctx->drm_dev);
hdmi_poweroff(hdata);
return 0;
}
static int hdmi_resume(struct device *dev)
{
struct exynos_drm_hdmi_context *ctx = get_hdmi_context(dev);
struct hdmi_context *hdata = ctx->ctx;
enable_irq(hdata->external_irq);
enable_irq(hdata->internal_irq);
return 0;
}
#endif
static SIMPLE_DEV_PM_OPS(hdmi_pm_ops, hdmi_suspend, hdmi_resume);
struct platform_driver hdmi_driver = {
.probe = hdmi_probe,
.remove = __devexit_p(hdmi_remove),
.driver = {
.name = "exynos4-hdmi",
.owner = THIS_MODULE,
.pm = &hdmi_pm_ops,
},
};

15
drivers/gpu/drm/exynos/exynos_mixer.c
View File

@ -1104,10 +1104,25 @@ static int mixer_remove(struct platform_device *pdev)
return 0;
}
#ifdef CONFIG_PM_SLEEP
static int mixer_suspend(struct device *dev)
{
struct exynos_drm_hdmi_context *drm_hdmi_ctx = get_mixer_context(dev);
struct mixer_context *ctx = drm_hdmi_ctx->ctx;
mixer_poweroff(ctx);
return 0;
}
#endif
static SIMPLE_DEV_PM_OPS(mixer_pm_ops, mixer_suspend, NULL);
struct platform_driver mixer_driver = {
.driver = {
.name = "s5p-mixer",
.owner = THIS_MODULE,
.pm = &mixer_pm_ops,
},
.probe = mixer_probe,
.remove = __devexit_p(mixer_remove),