this patch addes pm feature for fimd driver.
Signed-off-by: Inki Dae inki.dae@samsung.com Signed-off-by: Kyungmin Park kyungmin.park@samsung.com --- drivers/gpu/drm/exynos/exynos_drm_fimd.c | 59 ++++++++++++++++++++++++++++++ 1 files changed, 59 insertions(+), 0 deletions(-)
diff --git a/drivers/gpu/drm/exynos/exynos_drm_fimd.c b/drivers/gpu/drm/exynos/exynos_drm_fimd.c index fe4172e..95c6210 100644 --- a/drivers/gpu/drm/exynos/exynos_drm_fimd.c +++ b/drivers/gpu/drm/exynos/exynos_drm_fimd.c @@ -181,6 +181,9 @@ static void fimd_commit(struct device *dev) struct fb_videomode *timing = ctx->timing; u32 val;
+ if (ctx->suspended) + return; + DRM_DEBUG_KMS("%s\n", __FILE__);
/* setup polarity values from machine code. */ @@ -414,6 +417,9 @@ static void fimd_win_commit(struct device *dev, int zpos)
DRM_DEBUG_KMS("%s\n", __FILE__);
+ if (ctx->suspended) + return; + if (win == DEFAULT_ZPOS) win = ctx->default_win;
@@ -885,6 +891,51 @@ out: return 0; }
+#ifdef CONFIG_PM_SLEEP +static int fimd_suspend(struct device *dev) +{ + struct fimd_context *ctx = get_fimd_context(dev); + int ret; + + if (pm_runtime_suspended(dev)) + return 0; + + ret = pm_runtime_suspend(dev); + if (ret < 0) + return ret; + + ctx->suspended = true; + return 0; +} + +static int fimd_resume(struct device *dev) +{ + struct fimd_context *ctx = get_fimd_context(dev); + int ret; + + ret = pm_runtime_resume(dev); + if (ret < 0) { + DRM_ERROR("failed to resume runtime pm.\n"); + return ret; + } + + pm_runtime_disable(dev); + + ret = pm_runtime_set_active(dev); + if (ret < 0) { + DRM_ERROR("failed to active runtime pm.\n"); + pm_runtime_enable(dev); + pm_runtime_suspend(dev); + return ret; + } + + pm_runtime_enable(dev); + + ctx->suspended = false; + return 0; +} +#endif + #ifdef CONFIG_PM_RUNTIME static int fimd_runtime_suspend(struct device *dev) { @@ -917,11 +968,19 @@ static int fimd_runtime_resume(struct device *dev) }
ctx->suspended = false; + + /* if vblank was enabled status, enable it again. */ + if (test_and_clear_bit(0, &ctx->irq_flags)) + fimd_enable_vblank(dev); + + fimd_apply(dev); + return 0; } #endif
static const struct dev_pm_ops fimd_pm_ops = { + SET_SYSTEM_SLEEP_PM_OPS(fimd_suspend, fimd_resume) SET_RUNTIME_PM_OPS(fimd_runtime_suspend, fimd_runtime_resume, NULL) };