This patch implements the dpms display callback for the DP driver.
Signed-off-by: Sean Paul <seanpaul@xxxxxxxxxxxx>
---
Changes in v2:
- Added to the patchset
Changes in v3: None
Changes in v4: None
drivers/gpu/drm/exynos/exynos_dp_core.c | 142 ++++++++++++++++++--------------
drivers/gpu/drm/exynos/exynos_dp_core.h | 1 +
2 files changed, 81 insertions(+), 62 deletions(-)
diff --git a/drivers/gpu/drm/exynos/exynos_dp_core.c b/drivers/gpu/drm/exynos/exynos_dp_core.c
index 5c26161..05ce947 100644
--- a/drivers/gpu/drm/exynos/exynos_dp_core.c
+++ b/drivers/gpu/drm/exynos/exynos_dp_core.c
@@ -915,10 +915,78 @@ static int exynos_dp_check_mode(struct exynos_drm_display *display,
return 0;
}
+static void exynos_dp_phy_init(struct exynos_dp_device *dp)
+{
+ if (dp->phy) {
+ phy_power_on(dp->phy);
+ } else if (dp->phy_addr) {
+ u32 reg;
+
+ reg = __raw_readl(dp->phy_addr);
+ reg |= dp->enable_mask;
+ __raw_writel(reg, dp->phy_addr);
+ }
+}
+
+static void exynos_dp_phy_exit(struct exynos_dp_device *dp)
+{
+ if (dp->phy) {
+ phy_power_off(dp->phy);
+ } else if (dp->phy_addr) {
+ u32 reg;
+
+ reg = __raw_readl(dp->phy_addr);
+ reg &= ~(dp->enable_mask);
+ __raw_writel(reg, dp->phy_addr);
+ }
+}
+
+static void exynos_dp_poweron(struct exynos_dp_device *dp)
+{
+ if (dp->dpms_mode == DRM_MODE_DPMS_ON)
+ return;
+
+ clk_prepare_enable(dp->clock);
+ exynos_dp_phy_init(dp);
+ exynos_dp_init_dp(dp);
+ enable_irq(dp->irq);
+}
+
+static void exynos_dp_poweroff(struct exynos_dp_device *dp)
+{
+ if (dp->dpms_mode != DRM_MODE_DPMS_ON)
+ return;
+
+ disable_irq(dp->irq);
+ flush_work(&dp->hotplug_work);
+ exynos_dp_phy_exit(dp);
+ clk_disable_unprepare(dp->clock);
+}
+
+static void exynos_dp_dpms(struct exynos_drm_display *display, int mode)
+{
+ struct exynos_dp_device *dp = display->ctx;
+
+ switch (mode) {
+ case DRM_MODE_DPMS_ON:
+ exynos_dp_poweron(dp);
+ break;
+ case DRM_MODE_DPMS_STANDBY:
+ case DRM_MODE_DPMS_SUSPEND:
+ case DRM_MODE_DPMS_OFF:
+ exynos_dp_poweroff(dp);
+ break;
+ default:
+ break;
+ };
+ dp->dpms_mode = mode;
+}
+
static struct exynos_drm_display_ops exynos_dp_display_ops = {
.is_connected = exynos_dp_display_is_connected,
.get_panel = exynos_dp_get_panel,
.check_mode = exynos_dp_check_mode,
+ .dpms = exynos_dp_dpms,
};
static struct exynos_drm_display exynos_dp_display = {
@@ -1040,54 +1108,6 @@ static int exynos_dp_dt_parse_panel(struct exynos_dp_device *dp)
return 0;
}
-static void exynos_dp_phy_init(struct exynos_dp_device *dp)
-{
- if (dp->phy) {
- phy_power_on(dp->phy);
- } else if (dp->phy_addr) {
- u32 reg;
-
- reg = __raw_readl(dp->phy_addr);
- reg |= dp->enable_mask;
- __raw_writel(reg, dp->phy_addr);
- }
-}
-
-static void exynos_dp_phy_exit(struct exynos_dp_device *dp)
-{
- if (dp->phy) {
- phy_power_off(dp->phy);
- } else if (dp->phy_addr) {
- u32 reg;
-
- reg = __raw_readl(dp->phy_addr);
- reg &= ~(dp->enable_mask);
- __raw_writel(reg, dp->phy_addr);
- }
-}
-
-void exynos_dp_poweron(struct exynos_dp_device *dp)
-{
- exynos_dp_phy_init(dp);
-
- clk_prepare_enable(dp->clock);
-
- exynos_dp_init_dp(dp);
-
- enable_irq(dp->irq);
-}
-
-void exynos_dp_poweroff(struct exynos_dp_device *dp)
-{
- disable_irq(dp->irq);
-
- flush_work(&dp->hotplug_work);
-
- exynos_dp_phy_exit(dp);
-
- clk_disable_unprepare(dp->clock);
-}
-
static int exynos_dp_probe(struct platform_device *pdev)
{
struct resource *res;
@@ -1103,6 +1123,7 @@ static int exynos_dp_probe(struct platform_device *pdev)
}
dp->dev = &pdev->dev;
+ dp->dpms_mode = DRM_MODE_DPMS_OFF;
dp->video_info = exynos_dp_dt_parse_pdata(&pdev->dev);
if (IS_ERR(dp->video_info))
@@ -1148,10 +1169,11 @@ static int exynos_dp_probe(struct platform_device *pdev)
dev_err(&pdev->dev, "failed to request irq\n");
return ret;
}
-
- platform_set_drvdata(pdev, dp);
+ disable_irq(dp->irq);
exynos_dp_display.ctx = dp;
+
+ platform_set_drvdata(pdev, &exynos_dp_display);
exynos_drm_display_register(&exynos_dp_display);
return 0;
@@ -1159,34 +1181,30 @@ static int exynos_dp_probe(struct platform_device *pdev)
static int exynos_dp_remove(struct platform_device *pdev)
{
- struct exynos_dp_device *dp = platform_get_drvdata(pdev);
+ struct exynos_drm_display *display = platform_get_drvdata(pdev);
+ exynos_dp_dpms(display, DRM_MODE_DPMS_OFF);
exynos_drm_display_unregister(&exynos_dp_display);
- flush_work(&dp->hotplug_work);
-
- exynos_dp_phy_exit(dp);
-
- clk_disable_unprepare(dp->clock);
-
-
return 0;
}
#ifdef CONFIG_PM_SLEEP
static int exynos_dp_suspend(struct device *dev)
{
- struct exynos_dp_device *dp = dev_get_drvdata(dev);
+ struct platform_device *pdev = to_platform_device(dev);
+ struct exynos_drm_display *display = platform_get_drvdata(pdev);
- exynos_dp_poweroff(dp);
+ exynos_dp_dpms(display, DRM_MODE_DPMS_OFF);
return 0;
}
static int exynos_dp_resume(struct device *dev)
{
- struct exynos_dp_device *dp = dev_get_drvdata(dev);
+ struct platform_device *pdev = to_platform_device(dev);
+ struct exynos_drm_display *display = platform_get_drvdata(pdev);
- exynos_dp_poweron(dp);
+ exynos_dp_dpms(display, DRM_MODE_DPMS_ON);
return 0;
}
#endif
diff --git a/drivers/gpu/drm/exynos/exynos_dp_core.h b/drivers/gpu/drm/exynos/exynos_dp_core.h
index 4f14141..ccaeadc 100644
--- a/drivers/gpu/drm/exynos/exynos_dp_core.h
+++ b/drivers/gpu/drm/exynos/exynos_dp_core.h
@@ -154,6 +154,7 @@ struct exynos_dp_device {
struct link_train link_train;
struct work_struct hotplug_work;
struct phy *phy;
+ int dpms_mode;
struct exynos_drm_panel_info panel;
};
--
1.8.5.1
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