From: Gustavo Padovan gustavo.padovan@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.
Signed-off-by: Gustavo Padovan gustavo.padovan@collabora.co.uk Signed-off-by: Inki Dae inki.dae@samsung.com --- drivers/gpu/drm/exynos/exynos_mixer.c | 125 +++++++++++++++++----------------- 1 file changed, 61 insertions(+), 64 deletions(-)
diff --git a/drivers/gpu/drm/exynos/exynos_mixer.c b/drivers/gpu/drm/exynos/exynos_mixer.c index d09f8f9..7498c6e 100644 --- a/drivers/gpu/drm/exynos/exynos_mixer.c +++ b/drivers/gpu/drm/exynos/exynos_mixer.c @@ -70,7 +70,6 @@ enum mixer_version_id { };
enum mixer_flag_bits { - MXR_BIT_POWERED, MXR_BIT_VSYNC, };
@@ -926,8 +925,6 @@ static int mixer_enable_vblank(struct exynos_drm_crtc *crtc) struct mixer_resources *res = &mixer_ctx->mixer_res;
__set_bit(MXR_BIT_VSYNC, &mixer_ctx->flags); - if (!test_bit(MXR_BIT_POWERED, &mixer_ctx->flags)) - return 0;
/* enable vsync interrupt */ mixer_reg_writemask(res, MXR_INT_STATUS, ~0, MXR_INT_CLEAR_VSYNC); @@ -943,9 +940,6 @@ static void mixer_disable_vblank(struct exynos_drm_crtc *crtc)
__clear_bit(MXR_BIT_VSYNC, &mixer_ctx->flags);
- if (!test_bit(MXR_BIT_POWERED, &mixer_ctx->flags)) - return; - /* disable vsync interrupt */ mixer_reg_writemask(res, MXR_INT_STATUS, ~0, MXR_INT_CLEAR_VSYNC); mixer_reg_writemask(res, MXR_INT_EN, 0, MXR_INT_EN_VSYNC); @@ -958,9 +952,6 @@ static void mixer_update_plane(struct exynos_drm_crtc *crtc,
DRM_DEBUG_KMS("win: %d\n", plane->zpos);
- if (!test_bit(MXR_BIT_POWERED, &mixer_ctx->flags)) - return; - if (plane->zpos > 1 && mixer_ctx->vp_enabled) vp_video_buffer(mixer_ctx, plane); else @@ -976,9 +967,6 @@ static void mixer_disable_plane(struct exynos_drm_crtc *crtc,
DRM_DEBUG_KMS("win: %d\n", plane->zpos);
- if (!test_bit(MXR_BIT_POWERED, &mixer_ctx->flags)) - return; - spin_lock_irqsave(&res->reg_slock, flags); mixer_vsync_set_update(mixer_ctx, false);
@@ -993,9 +981,6 @@ static void mixer_wait_for_vblank(struct exynos_drm_crtc *crtc) struct mixer_context *mixer_ctx = crtc->ctx; int err;
- if (!test_bit(MXR_BIT_POWERED, &mixer_ctx->flags)) - return; - err = drm_vblank_get(mixer_ctx->drm_dev, mixer_ctx->pipe); if (err < 0) { DRM_DEBUG_KMS("failed to acquire vblank counter\n"); @@ -1020,43 +1005,9 @@ static void mixer_enable(struct exynos_drm_crtc *crtc) { struct mixer_context *ctx = crtc->ctx; struct mixer_resources *res = &ctx->mixer_res; - int ret; - - if (test_bit(MXR_BIT_POWERED, &ctx->flags)) - return;
pm_runtime_get_sync(ctx->dev);
- ret = clk_prepare_enable(res->mixer); - if (ret < 0) { - DRM_ERROR("Failed to prepare_enable the mixer clk [%d]\n", ret); - return; - } - ret = clk_prepare_enable(res->hdmi); - if (ret < 0) { - DRM_ERROR("Failed to prepare_enable the hdmi clk [%d]\n", ret); - return; - } - if (ctx->vp_enabled) { - ret = clk_prepare_enable(res->vp); - if (ret < 0) { - DRM_ERROR("Failed to prepare_enable the vp clk [%d]\n", - ret); - return; - } - if (ctx->has_sclk) { - ret = clk_prepare_enable(res->sclk_mixer); - if (ret < 0) { - DRM_ERROR("Failed to prepare_enable the " \ - "sclk_mixer clk [%d]\n", - ret); - return; - } - } - } - - set_bit(MXR_BIT_POWERED, &ctx->flags); - mixer_reg_writemask(res, MXR_STATUS, ~0, MXR_STATUS_SOFT_RESET);
if (test_bit(MXR_BIT_VSYNC, &ctx->flags)) { @@ -1069,29 +1020,15 @@ static void mixer_enable(struct exynos_drm_crtc *crtc) static void mixer_disable(struct exynos_drm_crtc *crtc) { struct mixer_context *ctx = crtc->ctx; - struct mixer_resources *res = &ctx->mixer_res; int i;
- if (!test_bit(MXR_BIT_POWERED, &ctx->flags)) - return; - mixer_stop(ctx); mixer_regs_dump(ctx);
for (i = 0; i < MIXER_WIN_NR; i++) mixer_disable_plane(crtc, &ctx->planes[i]);
- clear_bit(MXR_BIT_POWERED, &ctx->flags); - - clk_disable_unprepare(res->hdmi); - clk_disable_unprepare(res->mixer); - if (ctx->vp_enabled) { - clk_disable_unprepare(res->vp); - if (ctx->has_sclk) - clk_disable_unprepare(res->sclk_mixer); - } - - pm_runtime_put_sync(ctx->dev); + pm_runtime_put(ctx->dev); }
/* Only valid for Mixer version 16.0.33.0 */ @@ -1293,10 +1230,70 @@ static int mixer_remove(struct platform_device *pdev) return 0; }
+#ifdef CONFIG_PM_SLEEP +static int exynos_mixer_suspend(struct device *dev) +{ + struct mixer_context *ctx = dev_get_drvdata(dev); + struct mixer_resources *res = &ctx->mixer_res; + + clk_disable_unprepare(res->hdmi); + clk_disable_unprepare(res->mixer); + if (ctx->vp_enabled) { + clk_disable_unprepare(res->vp); + if (ctx->has_sclk) + clk_disable_unprepare(res->sclk_mixer); + } + + return 0; +} + +static int exynos_mixer_resume(struct device *dev) +{ + struct mixer_context *ctx = dev_get_drvdata(dev); + struct mixer_resources *res = &ctx->mixer_res; + int ret; + + ret = clk_prepare_enable(res->mixer); + if (ret < 0) { + DRM_ERROR("Failed to prepare_enable the mixer clk [%d]\n", ret); + return ret; + } + ret = clk_prepare_enable(res->hdmi); + if (ret < 0) { + DRM_ERROR("Failed to prepare_enable the hdmi clk [%d]\n", ret); + return ret; + } + if (ctx->vp_enabled) { + ret = clk_prepare_enable(res->vp); + if (ret < 0) { + DRM_ERROR("Failed to prepare_enable the vp clk [%d]\n", + ret); + return ret; + } + if (ctx->has_sclk) { + ret = clk_prepare_enable(res->sclk_mixer); + if (ret < 0) { + DRM_ERROR("Failed to prepare_enable the " \ + "sclk_mixer clk [%d]\n", + ret); + return ret; + } + } + } + + return 0; +} +#endif + +static const struct dev_pm_ops exynos_mixer_pm_ops = { + SET_RUNTIME_PM_OPS(exynos_mixer_suspend, exynos_mixer_resume, NULL) +}; + struct platform_driver mixer_driver = { .driver = { .name = "exynos-mixer", .owner = THIS_MODULE, + .pm = &exynos_mixer_pm_ops, .of_match_table = mixer_match_types, }, .probe = mixer_probe,