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drm/exynos: add pm_runtime to DECON 5433

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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 v3:
- Change CONFIG_PM_SLEEP -> CONFIG_PM

Changelog v2:
- no change

Signed-off-by: Gustavo Padovan <gustavo.padovan@collabora.co.uk>
Signed-off-by: Inki Dae <inki.dae@samsung.com>
This commit is contained in:
Gustavo Padovan 2015-11-02 20:54:55 +09:00 committed by Inki Dae
parent 415719768f
commit ebf3fd403b
1 changed files with 39 additions and 15 deletions
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54
drivers/gpu/drm/exynos/exynos5433_drm_decon.c
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@ -385,12 +385,6 @@ static void decon_enable(struct exynos_drm_crtc *crtc)
pm_runtime_get_sync(ctx->dev);
for (i = 0; i < ARRAY_SIZE(decon_clks_name); i++) {
ret = clk_prepare_enable(ctx->clks[i]);
if (ret < 0)
goto err;
}
set_bit(BIT_CLKS_ENABLED, &ctx->flags);
/* if vblank was enabled status, enable it again. */
@ -399,11 +393,6 @@ static void decon_enable(struct exynos_drm_crtc *crtc)
decon_commit(ctx->crtc);
return;
err:
while (--i >= 0)
clk_disable_unprepare(ctx->clks[i]);
set_bit(BIT_SUSPENDED, &ctx->flags);
}
@ -425,9 +414,6 @@ static void decon_disable(struct exynos_drm_crtc *crtc)
decon_swreset(ctx);
for (i = 0; i < ARRAY_SIZE(decon_clks_name); i++)
clk_disable_unprepare(ctx->clks[i]);
clear_bit(BIT_CLKS_ENABLED, &ctx->flags);
pm_runtime_put_sync(ctx->dev);
@ -478,7 +464,6 @@ err:
static struct exynos_drm_crtc_ops decon_crtc_ops = {
.enable = decon_enable,
.disable = decon_disable,
.commit = decon_commit,
.enable_vblank = decon_enable_vblank,
.disable_vblank = decon_disable_vblank,
.atomic_begin = decon_atomic_begin,
@ -581,6 +566,44 @@ out:
return IRQ_HANDLED;
}
#ifdef CONFIG_PM
static int exynos5433_decon_suspend(struct device *dev)
{
struct decon_context *ctx = dev_get_drvdata(dev);
int i;
for (i = 0; i < ARRAY_SIZE(decon_clks_name); i++)
clk_disable_unprepare(ctx->clks[i]);
return 0;
}
static int exynos5433_decon_resume(struct device *dev)
{
struct decon_context *ctx = dev_get_drvdata(dev);
int i, ret;
for (i = 0; i < ARRAY_SIZE(decon_clks_name); i++) {
ret = clk_prepare_enable(ctx->clks[i]);
if (ret < 0)
goto err;
}
return 0;
err:
while (--i >= 0)
clk_disable_unprepare(ctx->clks[i]);
return ret;
}
#endif
static const struct dev_pm_ops exynos5433_decon_pm_ops = {
SET_RUNTIME_PM_OPS(exynos5433_decon_suspend, exynos5433_decon_resume,
NULL)
};
static const struct of_device_id exynos5433_decon_driver_dt_match[] = {
{
.compatible = "samsung,exynos5433-decon",
@ -684,6 +707,7 @@ struct platform_driver exynos5433_decon_driver = {
.remove = exynos5433_decon_remove,
.driver = {
.name = "exynos5433-decon",
.pm = &exynos5433_decon_pm_ops,
.of_match_table = exynos5433_decon_driver_dt_match,
},
};