From: Gustavo Padovan <gustavo.pado...@collabora.co.uk>
Let pm_runtime handle the enabling/disabling of the device with proper
refcnt instead of rely on specific flags to track the enabled state.
Changelog v2:
- Remove unnecessary changes which removed commit callback from decon drivers
and modify CONFIG_PM_SLEEP -> CONFIG_PM
Signed-off-by: Gustavo Padovan <gustavo.padovan at collabora.co.uk>
Signed-off-by: Inki Dae <inki.dae at samsung.com>
---
drivers/gpu/drm/exynos/exynos_drm_fimd.c | 91 +++++++++++++-------------------
1 file changed, 37 insertions(+), 54 deletions(-)
diff --git a/drivers/gpu/drm/exynos/exynos_drm_fimd.c
b/drivers/gpu/drm/exynos/exynos_drm_fimd.c
index bd75c15..ae97271 100644
--- a/drivers/gpu/drm/exynos/exynos_drm_fimd.c
+++ b/drivers/gpu/drm/exynos/exynos_drm_fimd.c
@@ -160,7 +160,6 @@ struct fimd_context {
u32 vidout_con;
u32 i80ifcon;
bool i80_if;
- bool suspended;
int pipe;
wait_queue_head_t wait_vsync_queue;
atomic_t wait_vsync_event;
@@ -209,9 +208,6 @@ static int fimd_enable_vblank(struct exynos_drm_crtc *crtc)
struct fimd_context *ctx = crtc->ctx;
u32 val;
- if (ctx->suspended)
- return -EPERM;
-
if (!test_and_set_bit(0, &ctx->irq_flags)) {
val = readl(ctx->regs + VIDINTCON0);
@@ -241,9 +237,6 @@ static void fimd_disable_vblank(struct exynos_drm_crtc
*crtc)
struct fimd_context *ctx = crtc->ctx;
u32 val;
- if (ctx->suspended)
- return;
-
if (test_and_clear_bit(0, &ctx->irq_flags)) {
val = readl(ctx->regs + VIDINTCON0);
@@ -264,9 +257,6 @@ static void fimd_wait_for_vblank(struct exynos_drm_crtc
*crtc)
{
struct fimd_context *ctx = crtc->ctx;
- if (ctx->suspended)
- return;
-
atomic_set(&ctx->wait_vsync_event, 1);
/*
@@ -339,14 +329,12 @@ static void fimd_clear_channels(struct exynos_drm_crtc
*crtc)
int pipe = ctx->pipe;
/* ensure that vblank interrupt won't be reported to core */
- ctx->suspended = false;
ctx->pipe = -1;
fimd_enable_vblank(ctx->crtc);
fimd_wait_for_vblank(ctx->crtc);
fimd_disable_vblank(ctx->crtc);
- ctx->suspended = true;
ctx->pipe = pipe;
}
@@ -384,9 +372,6 @@ static void fimd_commit(struct exynos_drm_crtc *crtc)
void *timing_base = ctx->regs + driver_data->timing_base;
u32 val, clkdiv;
- if (ctx->suspended)
- return;
-
/* nothing to do if we haven't set the mode yet */
if (mode->htotal == 0 || mode->vtotal == 0)
return;
@@ -620,9 +605,6 @@ static void fimd_atomic_begin(struct exynos_drm_crtc *crtc,
{
struct fimd_context *ctx = crtc->ctx;
- if (ctx->suspended)
- return;
-
fimd_shadow_protect_win(ctx, plane->zpos, true);
}
@@ -631,9 +613,6 @@ static void fimd_atomic_flush(struct exynos_drm_crtc *crtc,
{
struct fimd_context *ctx = crtc->ctx;
- if (ctx->suspended)
- return;
-
fimd_shadow_protect_win(ctx, plane->zpos, false);
}
@@ -649,9 +628,6 @@ static void fimd_update_plane(struct exynos_drm_crtc *crtc,
unsigned int bpp = state->fb->bits_per_pixel >> 3;
unsigned int pitch = state->fb->pitches[0];
- if (ctx->suspended)
- return;
-
offset = plane->src_x * bpp;
offset += plane->src_y * pitch;
@@ -733,9 +709,6 @@ static void fimd_disable_plane(struct exynos_drm_crtc *crtc,
struct fimd_context *ctx = crtc->ctx;
unsigned int win = plane->zpos;
- if (ctx->suspended)
- return;
-
fimd_enable_video_output(ctx, win, false);
if (ctx->driver_data->has_shadowcon)
@@ -745,27 +718,9 @@ static void fimd_disable_plane(struct exynos_drm_crtc
*crtc,
static void fimd_enable(struct exynos_drm_crtc *crtc)
{
struct fimd_context *ctx = crtc->ctx;
- int ret;
-
- if (!ctx->suspended)
- return;
-
- ctx->suspended = false;
pm_runtime_get_sync(ctx->dev);
- ret = clk_prepare_enable(ctx->bus_clk);
- if (ret < 0) {
- DRM_ERROR("Failed to prepare_enable the bus clk [%d]\n", ret);
- return;
- }
-
- ret = clk_prepare_enable(ctx->lcd_clk);
- if (ret < 0) {
- DRM_ERROR("Failed to prepare_enable the lcd clk [%d]\n", ret);
- return;
- }
-
/* if vblank was enabled status, enable it again. */
if (test_and_clear_bit(0, &ctx->irq_flags))
fimd_enable_vblank(ctx->crtc);
@@ -778,9 +733,6 @@ static void fimd_disable(struct exynos_drm_crtc *crtc)
struct fimd_context *ctx = crtc->ctx;
int i;
- if (ctx->suspended)
- return;
-
/*
* We need to make sure that all windows are disabled before we
* suspend that connector. Otherwise we might try to scan from
@@ -795,12 +747,7 @@ static void fimd_disable(struct exynos_drm_crtc *crtc)
writel(0, ctx->regs + VIDCON0);
- clk_disable_unprepare(ctx->lcd_clk);
- clk_disable_unprepare(ctx->bus_clk);
-
pm_runtime_put_sync(ctx->dev);
-
- ctx->suspended = true;
}
static void fimd_trigger(struct device *dev)
@@ -1011,7 +958,6 @@ static int fimd_probe(struct platform_device *pdev)
return -ENOMEM;
ctx->dev = dev;
- ctx->suspended = true;
ctx->driver_data = drm_fimd_get_driver_data(pdev);
if (of_property_read_bool(dev->of_node, "samsung,invert-vden"))
@@ -1121,12 +1067,49 @@ static int fimd_remove(struct platform_device *pdev)
return 0;
}
+#ifdef CONFIG_PM
+static int exynos_fimd_suspend(struct device *dev)
+{
+ struct fimd_context *ctx = dev_get_drvdata(dev);
+
+ clk_disable_unprepare(ctx->lcd_clk);
+ clk_disable_unprepare(ctx->bus_clk);
+
+ return 0;
+}
+
+static int exynos_fimd_resume(struct device *dev)
+{
+ struct fimd_context *ctx = dev_get_drvdata(dev);
+ int ret;
+
+ ret = clk_prepare_enable(ctx->bus_clk);
+ if (ret < 0) {
+ DRM_ERROR("Failed to prepare_enable the bus clk [%d]\n", ret);
+ return ret;
+ }
+
+ ret = clk_prepare_enable(ctx->lcd_clk);
+ if (ret < 0) {
+ DRM_ERROR("Failed to prepare_enable the lcd clk [%d]\n", ret);
+ return ret;
+ }
+
+ return 0;
+}
+#endif
+
+static const struct dev_pm_ops exynos_fimd_pm_ops = {
+ SET_RUNTIME_PM_OPS(exynos_fimd_suspend, exynos_fimd_resume, NULL)
+};
+
struct platform_driver fimd_driver = {
.probe = fimd_probe,
.remove = fimd_remove,
.driver = {
.name = "exynos4-fb",
.owner = THIS_MODULE,
+ .pm = &exynos_fimd_pm_ops,
.of_match_table = fimd_driver_dt_match,
},
};
--
1.9.1
