From e35a29d5c432504e6134c881dc4aaded7de7e717 Mon Sep 17 00:00:00 2001 From: Rob Clark Date: Thu, 29 Aug 2019 09:45:15 -0700 Subject: [PATCH] drm/msm: split power control from prepare/complete_commit With atomic commit, ->prepare_commit() and ->complete_commit() may not be evenly balanced (although ->complete_commit() will complete each crtc that had been previously prepared). So these will no longer be a good place to enable/disable clocks needed for hw access. Signed-off-by: Rob Clark Reviewed-by: Sean Paul --- drivers/gpu/drm/msm/disp/dpu1/dpu_kms.c | 17 ++++++++++++++--- drivers/gpu/drm/msm/disp/mdp4/mdp4_kms.c | 19 ++++++++++++++----- drivers/gpu/drm/msm/disp/mdp5/mdp5_kms.c | 20 ++++++++++++++------ drivers/gpu/drm/msm/msm_atomic.c | 2 ++ drivers/gpu/drm/msm/msm_kms.h | 10 ++++++++++ 5 files changed, 54 insertions(+), 14 deletions(-) diff --git a/drivers/gpu/drm/msm/disp/dpu1/dpu_kms.c b/drivers/gpu/drm/msm/disp/dpu1/dpu_kms.c index de6223a0b1d4..2f0f379f3ae1 100644 --- a/drivers/gpu/drm/msm/disp/dpu1/dpu_kms.c +++ b/drivers/gpu/drm/msm/disp/dpu1/dpu_kms.c @@ -250,6 +250,18 @@ static void dpu_kms_disable_vblank(struct msm_kms *kms, struct drm_crtc *crtc) dpu_crtc_vblank(crtc, false); } +static void dpu_kms_enable_commit(struct msm_kms *kms) +{ + struct dpu_kms *dpu_kms = to_dpu_kms(kms); + pm_runtime_get_sync(&dpu_kms->pdev->dev); +} + +static void dpu_kms_disable_commit(struct msm_kms *kms) +{ + struct dpu_kms *dpu_kms = to_dpu_kms(kms); + pm_runtime_put_sync(&dpu_kms->pdev->dev); +} + static void dpu_kms_prepare_commit(struct msm_kms *kms, struct drm_atomic_state *state) { @@ -269,7 +281,6 @@ static void dpu_kms_prepare_commit(struct msm_kms *kms, if (!dev || !dev->dev_private) return; priv = dev->dev_private; - pm_runtime_get_sync(&dpu_kms->pdev->dev); /* Call prepare_commit for all affected encoders */ for_each_new_crtc_in_state(state, crtc, crtc_state, i) { @@ -337,8 +348,6 @@ static void dpu_kms_complete_commit(struct msm_kms *kms, unsigned crtc_mask) for_each_crtc_mask(dpu_kms->dev, crtc, crtc_mask) dpu_crtc_complete_commit(crtc); - pm_runtime_put_sync(&dpu_kms->pdev->dev); - DPU_ATRACE_END("kms_complete_commit"); } @@ -684,6 +693,8 @@ static const struct msm_kms_funcs kms_funcs = { .irq_preinstall = dpu_irq_preinstall, .irq_uninstall = dpu_irq_uninstall, .irq = dpu_irq, + .enable_commit = dpu_kms_enable_commit, + .disable_commit = dpu_kms_disable_commit, .prepare_commit = dpu_kms_prepare_commit, .flush_commit = dpu_kms_flush_commit, .commit = dpu_kms_commit, diff --git a/drivers/gpu/drm/msm/disp/mdp4/mdp4_kms.c b/drivers/gpu/drm/msm/disp/mdp4/mdp4_kms.c index 63e7a4a77c67..50711ccc8691 100644 --- a/drivers/gpu/drm/msm/disp/mdp4/mdp4_kms.c +++ b/drivers/gpu/drm/msm/disp/mdp4/mdp4_kms.c @@ -96,15 +96,24 @@ out: return ret; } -static void mdp4_prepare_commit(struct msm_kms *kms, struct drm_atomic_state *state) +static void mdp4_enable_commit(struct msm_kms *kms) { struct mdp4_kms *mdp4_kms = to_mdp4_kms(to_mdp_kms(kms)); + mdp4_enable(mdp4_kms); +} + +static void mdp4_disable_commit(struct msm_kms *kms) +{ + struct mdp4_kms *mdp4_kms = to_mdp4_kms(to_mdp_kms(kms)); + mdp4_disable(mdp4_kms); +} + +static void mdp4_prepare_commit(struct msm_kms *kms, struct drm_atomic_state *state) +{ int i; struct drm_crtc *crtc; struct drm_crtc_state *crtc_state; - mdp4_enable(mdp4_kms); - /* see 119ecb7fd */ for_each_new_crtc_in_state(state, crtc, crtc_state, i) drm_crtc_vblank_get(crtc); @@ -132,8 +141,6 @@ static void mdp4_complete_commit(struct msm_kms *kms, unsigned crtc_mask) /* see 119ecb7fd */ for_each_crtc_mask(mdp4_kms->dev, crtc, crtc_mask) drm_crtc_vblank_put(crtc); - - mdp4_disable(mdp4_kms); } static long mdp4_round_pixclk(struct msm_kms *kms, unsigned long rate, @@ -185,6 +192,8 @@ static const struct mdp_kms_funcs kms_funcs = { .irq = mdp4_irq, .enable_vblank = mdp4_enable_vblank, .disable_vblank = mdp4_disable_vblank, + .enable_commit = mdp4_enable_commit, + .disable_commit = mdp4_disable_commit, .prepare_commit = mdp4_prepare_commit, .flush_commit = mdp4_flush_commit, .wait_flush = mdp4_wait_flush, diff --git a/drivers/gpu/drm/msm/disp/mdp5/mdp5_kms.c b/drivers/gpu/drm/msm/disp/mdp5/mdp5_kms.c index b374ccda8018..91cd76a2bab1 100644 --- a/drivers/gpu/drm/msm/disp/mdp5/mdp5_kms.c +++ b/drivers/gpu/drm/msm/disp/mdp5/mdp5_kms.c @@ -146,16 +146,25 @@ static int mdp5_global_obj_init(struct mdp5_kms *mdp5_kms) return 0; } +static void mdp5_enable_commit(struct msm_kms *kms) +{ + struct mdp5_kms *mdp5_kms = to_mdp5_kms(to_mdp_kms(kms)); + pm_runtime_get_sync(&mdp5_kms->pdev->dev); +} + +static void mdp5_disable_commit(struct msm_kms *kms) +{ + struct mdp5_kms *mdp5_kms = to_mdp5_kms(to_mdp_kms(kms)); + pm_runtime_put_sync(&mdp5_kms->pdev->dev); +} + static void mdp5_prepare_commit(struct msm_kms *kms, struct drm_atomic_state *state) { struct mdp5_kms *mdp5_kms = to_mdp5_kms(to_mdp_kms(kms)); - struct device *dev = &mdp5_kms->pdev->dev; struct mdp5_global_state *global_state; global_state = mdp5_get_existing_global_state(mdp5_kms); - pm_runtime_get_sync(dev); - if (mdp5_kms->smp) mdp5_smp_prepare_commit(mdp5_kms->smp, &global_state->smp); } @@ -177,15 +186,12 @@ static void mdp5_wait_flush(struct msm_kms *kms, unsigned crtc_mask) static void mdp5_complete_commit(struct msm_kms *kms, unsigned crtc_mask) { struct mdp5_kms *mdp5_kms = to_mdp5_kms(to_mdp_kms(kms)); - struct device *dev = &mdp5_kms->pdev->dev; struct mdp5_global_state *global_state; global_state = mdp5_get_existing_global_state(mdp5_kms); if (mdp5_kms->smp) mdp5_smp_complete_commit(mdp5_kms->smp, &global_state->smp); - - pm_runtime_put_sync(dev); } static long mdp5_round_pixclk(struct msm_kms *kms, unsigned long rate, @@ -284,6 +290,8 @@ static const struct mdp_kms_funcs kms_funcs = { .enable_vblank = mdp5_enable_vblank, .disable_vblank = mdp5_disable_vblank, .flush_commit = mdp5_flush_commit, + .enable_commit = mdp5_enable_commit, + .disable_commit = mdp5_disable_commit, .prepare_commit = mdp5_prepare_commit, .wait_flush = mdp5_wait_flush, .complete_commit = mdp5_complete_commit, diff --git a/drivers/gpu/drm/msm/msm_atomic.c b/drivers/gpu/drm/msm/msm_atomic.c index 7a1c47cd7350..517d3a747778 100644 --- a/drivers/gpu/drm/msm/msm_atomic.c +++ b/drivers/gpu/drm/msm/msm_atomic.c @@ -49,6 +49,7 @@ void msm_atomic_commit_tail(struct drm_atomic_state *state) struct msm_kms *kms = priv->kms; unsigned crtc_mask = get_crtc_mask(state); + kms->funcs->enable_commit(kms); kms->funcs->prepare_commit(kms, state); /* @@ -69,6 +70,7 @@ void msm_atomic_commit_tail(struct drm_atomic_state *state) kms->funcs->wait_flush(kms, crtc_mask); kms->funcs->complete_commit(kms, crtc_mask); + kms->funcs->disable_commit(kms); drm_atomic_helper_commit_hw_done(state); diff --git a/drivers/gpu/drm/msm/msm_kms.h b/drivers/gpu/drm/msm/msm_kms.h index 80bccbf4d993..85264a2f1f6d 100644 --- a/drivers/gpu/drm/msm/msm_kms.h +++ b/drivers/gpu/drm/msm/msm_kms.h @@ -35,6 +35,16 @@ struct msm_kms_funcs { * Atomic commit handling: */ + /** + * Enable/disable power/clks needed for hw access done in other + * commit related methods. + * + * If mdp4 is migrated to runpm, we could probably drop these + * and use runpm directly. + */ + void (*enable_commit)(struct msm_kms *kms); + void (*disable_commit)(struct msm_kms *kms); + /** * Prepare for atomic commit. This is called after any previous * (async or otherwise) commit has completed.