Commit d4d2c604 authored by Rob Clark's avatar Rob Clark
Browse files

drm/msm: add kms->wait_flush() 



First step in re-working the atomic related internal API to prepare for
async updates pending.. ->wait_flush() is intended to block until there
is no in-progress flush.

A crtc_mask is used, rather than an atomic state object, as this will
later be used for async flush after the atomic state is destroyed.

This replaces ->wait_for_crtc_commit_done()

v2: update for review comments

Signed-off-by: default avatarRob Clark <robdclark@chromium.org>
parent 41a52059

drivers/gpu/drm/msm/disp/dpu1/dpu_kms.c

+10 −1
Original line number Diff line number Diff line
@@ -390,6 +390,15 @@ static void dpu_kms_wait_for_commit_done(struct msm_kms *kms, 
	}

}



static void dpu_kms_wait_flush(struct msm_kms *kms, unsigned crtc_mask)

{

	struct dpu_kms *dpu_kms = to_dpu_kms(kms);

	struct drm_crtc *crtc;



	for_each_crtc_mask(dpu_kms->dev, crtc, crtc_mask)

		dpu_kms_wait_for_commit_done(kms, crtc);

}



static int _dpu_kms_initialize_dsi(struct drm_device *dev,

				    struct msm_drm_private *priv,

				    struct dpu_kms *dpu_kms)
@@ -684,8 +693,8 @@ static const struct msm_kms_funcs kms_funcs = { 
	.irq             = dpu_irq,

	.prepare_commit  = dpu_kms_prepare_commit,

	.commit          = dpu_kms_commit,

	.wait_flush      = dpu_kms_wait_flush,

	.complete_commit = dpu_kms_complete_commit,

	.wait_for_crtc_commit_done = dpu_kms_wait_for_commit_done,

	.enable_vblank   = dpu_kms_enable_vblank,

	.disable_vblank  = dpu_kms_disable_vblank,

	.check_modified_format = dpu_format_check_modified_format,

drivers/gpu/drm/msm/disp/mdp4/mdp4_kms.c

+10 −7
Original line number Diff line number Diff line
@@ -110,6 +110,15 @@ static void mdp4_prepare_commit(struct msm_kms *kms, struct drm_atomic_state *st 
		drm_crtc_vblank_get(crtc);

}



static void mdp4_wait_flush(struct msm_kms *kms, unsigned crtc_mask)

{

	struct mdp4_kms *mdp4_kms = to_mdp4_kms(to_mdp_kms(kms));

	struct drm_crtc *crtc;



	for_each_crtc_mask(mdp4_kms->dev, crtc, crtc_mask)

		mdp4_crtc_wait_for_commit_done(crtc);

}



static void mdp4_complete_commit(struct msm_kms *kms, struct drm_atomic_state *state)

{

	struct mdp4_kms *mdp4_kms = to_mdp4_kms(to_mdp_kms(kms));
@@ -126,12 +135,6 @@ static void mdp4_complete_commit(struct msm_kms *kms, struct drm_atomic_state *s 
	mdp4_disable(mdp4_kms);

}



static void mdp4_wait_for_crtc_commit_done(struct msm_kms *kms,

						struct drm_crtc *crtc)

{

	mdp4_crtc_wait_for_commit_done(crtc);

}



static long mdp4_round_pixclk(struct msm_kms *kms, unsigned long rate,

		struct drm_encoder *encoder)

{
@@ -182,8 +185,8 @@ static const struct mdp_kms_funcs kms_funcs = { 
		.enable_vblank   = mdp4_enable_vblank,

		.disable_vblank  = mdp4_disable_vblank,

		.prepare_commit  = mdp4_prepare_commit,

		.wait_flush      = mdp4_wait_flush,

		.complete_commit = mdp4_complete_commit,

		.wait_for_crtc_commit_done = mdp4_wait_for_crtc_commit_done,

		.get_format      = mdp_get_format,

		.round_pixclk    = mdp4_round_pixclk,

		.destroy         = mdp4_destroy,

drivers/gpu/drm/msm/disp/mdp5/mdp5_kms.c

+10 −7
Original line number Diff line number Diff line
@@ -160,6 +160,15 @@ static void mdp5_prepare_commit(struct msm_kms *kms, struct drm_atomic_state *st 
		mdp5_smp_prepare_commit(mdp5_kms->smp, &global_state->smp);

}



static void mdp5_wait_flush(struct msm_kms *kms, unsigned crtc_mask)

{

	struct mdp5_kms *mdp5_kms = to_mdp5_kms(to_mdp_kms(kms));

	struct drm_crtc *crtc;



	for_each_crtc_mask(mdp5_kms->dev, crtc, crtc_mask)

		mdp5_crtc_wait_for_commit_done(crtc);

}



static void mdp5_complete_commit(struct msm_kms *kms, struct drm_atomic_state *state)

{

	struct mdp5_kms *mdp5_kms = to_mdp5_kms(to_mdp_kms(kms));
@@ -176,12 +185,6 @@ static void mdp5_complete_commit(struct msm_kms *kms, struct drm_atomic_state *s 
	pm_runtime_put_sync(dev);

}



static void mdp5_wait_for_crtc_commit_done(struct msm_kms *kms,

						struct drm_crtc *crtc)

{

	mdp5_crtc_wait_for_commit_done(crtc);

}



static long mdp5_round_pixclk(struct msm_kms *kms, unsigned long rate,

		struct drm_encoder *encoder)

{
@@ -278,8 +281,8 @@ static const struct mdp_kms_funcs kms_funcs = { 
		.enable_vblank   = mdp5_enable_vblank,

		.disable_vblank  = mdp5_disable_vblank,

		.prepare_commit  = mdp5_prepare_commit,

		.wait_flush      = mdp5_wait_flush,

		.complete_commit = mdp5_complete_commit,

		.wait_for_crtc_commit_done = mdp5_wait_for_crtc_commit_done,

		.get_format      = mdp_get_format,

		.round_pixclk    = mdp5_round_pixclk,

		.set_split_display = mdp5_set_split_display,

drivers/gpu/drm/msm/msm_atomic.c

+18 −24
Original line number Diff line number Diff line
@@ -12,28 +12,6 @@ 
#include "msm_gem.h"

#include "msm_kms.h"



static void msm_atomic_wait_for_commit_done(struct drm_device *dev,

		struct drm_atomic_state *old_state)

{

	struct drm_crtc *crtc;

	struct drm_crtc_state *new_crtc_state;

	struct msm_drm_private *priv = old_state->dev->dev_private;

	struct msm_kms *kms = priv->kms;

	int i;



	for_each_new_crtc_in_state(old_state, crtc, new_crtc_state, i) {

		if (!new_crtc_state->active)

			continue;



		if (drm_crtc_vblank_get(crtc))

			continue;



		kms->funcs->wait_for_crtc_commit_done(kms, crtc);



		drm_crtc_vblank_put(crtc);

	}

}



int msm_atomic_prepare_fb(struct drm_plane *plane,

			  struct drm_plane_state *new_state)

{
@@ -48,11 +26,28 @@ int msm_atomic_prepare_fb(struct drm_plane *plane, 
	return msm_framebuffer_prepare(new_state->fb, kms->aspace);

}



/* Get bitmask of crtcs that will need to be flushed.  The bitmask

 * can be used with for_each_crtc_mask() iterator, to iterate

 * effected crtcs without needing to preserve the atomic state.

 */

static unsigned get_crtc_mask(struct drm_atomic_state *state)

{

	struct drm_crtc_state *crtc_state;

	struct drm_crtc *crtc;

	unsigned i, mask = 0;



	for_each_new_crtc_in_state(state, crtc, crtc_state, i)

		mask |= drm_crtc_mask(crtc);



	return mask;

}



void msm_atomic_commit_tail(struct drm_atomic_state *state)

{

	struct drm_device *dev = state->dev;

	struct msm_drm_private *priv = dev->dev_private;

	struct msm_kms *kms = priv->kms;

	unsigned crtc_mask = get_crtc_mask(state);



	kms->funcs->prepare_commit(kms, state);
@@ -67,8 +62,7 @@ void msm_atomic_commit_tail(struct drm_atomic_state *state) 
		kms->funcs->commit(kms, state);

	}



	msm_atomic_wait_for_commit_done(dev, state);



	kms->funcs->wait_flush(kms, crtc_mask);

	kms->funcs->complete_commit(kms, state);



	drm_atomic_helper_commit_hw_done(state);

drivers/gpu/drm/msm/msm_kms.h

+6 −3
Original line number Diff line number Diff line
@@ -34,9 +34,8 @@ struct msm_kms_funcs { 
	void (*prepare_commit)(struct msm_kms *kms, struct drm_atomic_state *state);

	void (*commit)(struct msm_kms *kms, struct drm_atomic_state *state);

	void (*complete_commit)(struct msm_kms *kms, struct drm_atomic_state *state);

	/* functions to wait for atomic commit completed on each CRTC */

	void (*wait_for_crtc_commit_done)(struct msm_kms *kms,

					struct drm_crtc *crtc);

	void (*wait_flush)(struct msm_kms *kms, unsigned crtc_mask);



	/* get msm_format w/ optional format modifiers from drm_mode_fb_cmd2 */

	const struct msm_format *(*get_format)(struct msm_kms *kms,

					const uint32_t format,
@@ -98,4 +97,8 @@ struct msm_mdss { 
int mdp5_mdss_init(struct drm_device *dev);

int dpu_mdss_init(struct drm_device *dev);



#define for_each_crtc_mask(dev, crtc, crtc_mask) \

	drm_for_each_crtc(crtc, dev) \

		for_each_if (drm_crtc_mask(crtc) & (crtc_mask))



#endif /* __MSM_KMS_H__ */

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