this patch separetes fimd_power_on into fimd_activate and fimd_clock and
fimd_activate function will call fimd_clock to control fimd power and
vsync interrupt.
Signed-off-by: Inki Dae <inki....@samsung.com>
Signed-off-by: Kyungmin Park <kyungmin.p...@samsung.com>
---
drivers/gpu/drm/exynos/exynos_drm_fimd.c | 60 ++++++++++++++++++++----------
1 files changed, 40 insertions(+), 20 deletions(-)
diff --git a/drivers/gpu/drm/exynos/exynos_drm_fimd.c
b/drivers/gpu/drm/exynos/exynos_drm_fimd.c
index 47396e1..0ec9d86 100644
--- a/drivers/gpu/drm/exynos/exynos_drm_fimd.c
+++ b/drivers/gpu/drm/exynos/exynos_drm_fimd.c
@@ -747,16 +747,10 @@ static void fimd_clear_win(struct fimd_context *ctx, int
win)
writel(val, ctx->regs + SHADOWCON);
}
-static int fimd_power_on(struct fimd_context *ctx, bool enable)
+static int fimd_clock(struct fimd_context *ctx, bool enable)
{
- struct exynos_drm_subdrv *subdrv = &ctx->subdrv;
- struct device *dev = subdrv->dev;
-
DRM_DEBUG_KMS("%s\n", __FILE__);
- if (enable != false && enable != true)
- return -EINVAL;
-
if (enable) {
int ret;
@@ -769,18 +763,31 @@ static int fimd_power_on(struct fimd_context *ctx, bool
enable)
clk_disable(ctx->bus_clk);
return ret;
}
+ } else {
+ clk_disable(ctx->lcd_clk);
+ clk_disable(ctx->bus_clk);
+ }
- ctx->suspended = false;
+ return 0;
+}
+
+static int fimd_activate(struct fimd_context *ctx, bool enable)
+{
+ if (enable) {
+ int ret;
+ struct device *dev = ctx->subdrv.dev;
+
+ ret = fimd_clock(ctx, true);
+ if (ret < 0)
+ return ret;
/* if vblank was enabled status, enable it again. */
if (test_and_clear_bit(0, &ctx->irq_flags))
fimd_enable_vblank(dev);
- fimd_apply(dev);
+ ctx->suspended = false;
} else {
- clk_disable(ctx->lcd_clk);
- clk_disable(ctx->bus_clk);
-
+ fimd_clock(ctx, false);
ctx->suspended = true;
}
@@ -930,15 +937,15 @@ static int fimd_suspend(struct device *dev)
{
struct fimd_context *ctx = get_fimd_context(dev);
- if (pm_runtime_suspended(dev))
- return 0;
-
/*
* do not use pm_runtime_suspend(). if pm_runtime_suspend() is
* called here, an error would be returned by that interface
* because the usage_count of pm runtime is more than 1.
*/
- return fimd_power_on(ctx, false);
+ if (!pm_runtime_suspended(dev))
+ return fimd_activate(ctx, false);
+
+ return 0;
}
static int fimd_resume(struct device *dev)
@@ -950,8 +957,21 @@ static int fimd_resume(struct device *dev)
* of pm runtime would still be 1 so in this case, fimd driver
* should be on directly not drawing on pm runtime interface.
*/
- if (!pm_runtime_suspended(dev))
- return fimd_power_on(ctx, true);
+ if (pm_runtime_suspended(dev)) {
+ int ret;
+
+ ret = fimd_activate(ctx, false);
+ if (ret < 0)
+ return ret;
+
+ /*
+ * in case of dpms on(standby), fimd_apply function will
+ * be called by encoder's dpms callback to update fimd's
+ * registers but in case of sleep wakeup, it's not.
+ * so fimd_apply function should be called at here.
+ */
+ fimd_apply(dev);
+ }
return 0;
}
@@ -964,7 +984,7 @@ static int fimd_runtime_suspend(struct device *dev)
DRM_DEBUG_KMS("%s\n", __FILE__);
- return fimd_power_on(ctx, false);
+ return fimd_activate(ctx, false);
}
static int fimd_runtime_resume(struct device *dev)
@@ -973,7 +993,7 @@ static int fimd_runtime_resume(struct device *dev)
DRM_DEBUG_KMS("%s\n", __FILE__);
- return fimd_power_on(ctx, true);
+ return fimd_activate(ctx, true);
}
#endif
--
1.7.4.1
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