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| author | Rahul Sharma <rahul.sharma@samsung.com> | 2012-11-28 11:30:23 +0530 |
|---|---|---|
| committer | Inki Dae <inki.dae@samsung.com> | 2012-12-14 15:40:47 +0900 |
| commit | 64327cb35acea0e3046d7c08d90b84ab83d5e7d1 (patch) | |
| tree | 39493765a9598f24a005e817c0c18ea65f65d339 /drivers/gpu | |
| parent | 1169af218010ec7420c2f66c10284047774ba96c (diff) | |
| download | linux-stable-64327cb35acea0e3046d7c08d90b84ab83d5e7d1.tar.gz linux-stable-64327cb35acea0e3046d7c08d90b84ab83d5e7d1.tar.bz2 linux-stable-64327cb35acea0e3046d7c08d90b84ab83d5e7d1.zip | |
drm/exynos: added runtime pm support for hdmi
This patch adds runtime power management support for exynos drm
hdmi driver.
Signed-off-by: Rahul Sharma <rahul.sharma@samsung.com>
Signed-off-by: Shirish S <s.shirish@samsung.com>
Signed-off-by: Inki Dae <inki.dae@samsung.com>
Diffstat (limited to 'drivers/gpu')
| -rw-r--r-- | drivers/gpu/drm/exynos/exynos_hdmi.c | 60 |
1 files changed, 52 insertions, 8 deletions
diff --git a/drivers/gpu/drm/exynos/exynos_hdmi.c b/drivers/gpu/drm/exynos/exynos_hdmi.c index bafb65389562..98c587321521 100644 --- a/drivers/gpu/drm/exynos/exynos_hdmi.c +++ b/drivers/gpu/drm/exynos/exynos_hdmi.c @@ -2171,8 +2171,6 @@ static void hdmi_poweron(struct hdmi_context *hdata) mutex_unlock(&hdata->hdmi_mutex); - pm_runtime_get_sync(hdata->dev); - regulator_bulk_enable(res->regul_count, res->regul_bulk); clk_enable(res->hdmiphy); clk_enable(res->hdmi); @@ -2201,8 +2199,6 @@ static void hdmi_poweroff(struct hdmi_context *hdata) clk_disable(res->hdmiphy); regulator_bulk_disable(res->regul_count, res->regul_bulk); - pm_runtime_put_sync(hdata->dev); - mutex_lock(&hdata->hdmi_mutex); hdata->powered = false; @@ -2215,16 +2211,18 @@ static void hdmi_dpms(void *ctx, int mode) { struct hdmi_context *hdata = ctx; - DRM_DEBUG_KMS("[%d] %s\n", __LINE__, __func__); + DRM_DEBUG_KMS("[%d] %s mode %d\n", __LINE__, __func__, mode); switch (mode) { case DRM_MODE_DPMS_ON: - hdmi_poweron(hdata); + if (pm_runtime_suspended(hdata->dev)) + pm_runtime_get_sync(hdata->dev); break; case DRM_MODE_DPMS_STANDBY: case DRM_MODE_DPMS_SUSPEND: case DRM_MODE_DPMS_OFF: - hdmi_poweroff(hdata); + if (!pm_runtime_suspended(hdata->dev)) + pm_runtime_put_sync(hdata->dev); break; default: DRM_DEBUG_KMS("unknown dpms mode: %d\n", mode); @@ -2612,6 +2610,8 @@ static int hdmi_suspend(struct device *dev) struct exynos_drm_hdmi_context *ctx = get_hdmi_context(dev); struct hdmi_context *hdata = ctx->ctx; + DRM_DEBUG_KMS("[%d] %s\n", __LINE__, __func__); + disable_irq(hdata->internal_irq); disable_irq(hdata->external_irq); @@ -2619,6 +2619,11 @@ static int hdmi_suspend(struct device *dev) if (ctx->drm_dev) drm_helper_hpd_irq_event(ctx->drm_dev); + if (pm_runtime_suspended(dev)) { + DRM_DEBUG_KMS("%s : Already suspended\n", __func__); + return 0; + } + hdmi_poweroff(hdata); return 0; @@ -2629,13 +2634,52 @@ static int hdmi_resume(struct device *dev) struct exynos_drm_hdmi_context *ctx = get_hdmi_context(dev); struct hdmi_context *hdata = ctx->ctx; + DRM_DEBUG_KMS("[%d] %s\n", __LINE__, __func__); + + hdata->hpd = gpio_get_value(hdata->hpd_gpio); + enable_irq(hdata->external_irq); enable_irq(hdata->internal_irq); + + if (!pm_runtime_suspended(dev)) { + DRM_DEBUG_KMS("%s : Already resumed\n", __func__); + return 0; + } + + hdmi_poweron(hdata); + + return 0; +} +#endif + +#ifdef CONFIG_PM_RUNTIME +static int hdmi_runtime_suspend(struct device *dev) +{ + struct exynos_drm_hdmi_context *ctx = get_hdmi_context(dev); + struct hdmi_context *hdata = ctx->ctx; + DRM_DEBUG_KMS("[%d] %s\n", __LINE__, __func__); + + hdmi_poweroff(hdata); + + return 0; +} + +static int hdmi_runtime_resume(struct device *dev) +{ + struct exynos_drm_hdmi_context *ctx = get_hdmi_context(dev); + struct hdmi_context *hdata = ctx->ctx; + DRM_DEBUG_KMS("[%d] %s\n", __LINE__, __func__); + + hdmi_poweron(hdata); + return 0; } #endif -static SIMPLE_DEV_PM_OPS(hdmi_pm_ops, hdmi_suspend, hdmi_resume); +static const struct dev_pm_ops hdmi_pm_ops = { + SET_SYSTEM_SLEEP_PM_OPS(hdmi_suspend, hdmi_resume) + SET_RUNTIME_PM_OPS(hdmi_runtime_suspend, hdmi_runtime_resume, NULL) +}; struct platform_driver hdmi_driver = { .probe = hdmi_probe, |