Re: [PATCH v7 12/13] drm/exynos: atomic dpms support

[Joonyoung Shim <jy0922.shim@samsung.com>]

Hi Gustavo,

Sorry, i was missing some review points.

On 05/23/2015 12:40 AM, Gustavo Padovan wrote:
> From: Gustavo Padovan <gustavo.padovan@collabora.co.uk>
> 
> Run dpms operations through the atomic intefaces. This basically removes
> the .dpms() callback from econders and crtcs and use .disable() and
> .enable() to turn the crtc on and off.
> 
> v2: Address comments by Joonyoung:
> 	- make hdmi code call ->disable() instead of ->dpms()
> 	- do not use WARN_ON on crtc enable/disable
> 
> v3: - Fix build failure after the hdmi change in v2
>     - Change dpms helper of ptn3460 bridge
> 
> Signed-off-by: Gustavo Padovan <gustavo.padovan@collabora.co.uk>
> Reviewed-by: Joonyoung Shim <jy0922.shim@samsung.com>
> Tested-by: Tobias Jakobi <tjakobi@math.uni-bielefeld.de>
> ---
>  drivers/gpu/drm/bridge/ps8622.c             |  2 +-
>  drivers/gpu/drm/bridge/ptn3460.c            |  2 +-
>  drivers/gpu/drm/exynos/exynos_dp_core.c     |  2 +-
>  drivers/gpu/drm/exynos/exynos_drm_crtc.c    | 95 ++++++++++++++++-------------
>  drivers/gpu/drm/exynos/exynos_drm_dpi.c     |  2 +-
>  drivers/gpu/drm/exynos/exynos_drm_drv.h     |  4 +-
>  drivers/gpu/drm/exynos/exynos_drm_dsi.c     |  2 +-
>  drivers/gpu/drm/exynos/exynos_drm_encoder.c | 27 ++------
>  drivers/gpu/drm/exynos/exynos_drm_vidi.c    |  2 +-
>  drivers/gpu/drm/exynos/exynos_hdmi.c        |  6 +-
>  10 files changed, 69 insertions(+), 75 deletions(-)
> 
> diff --git a/drivers/gpu/drm/bridge/ps8622.c b/drivers/gpu/drm/bridge/ps8622.c
> index b604326..d686235 100644
> --- a/drivers/gpu/drm/bridge/ps8622.c
> +++ b/drivers/gpu/drm/bridge/ps8622.c
> @@ -499,7 +499,7 @@ static void ps8622_connector_destroy(struct drm_connector *connector)
>  }
>  
>  static const struct drm_connector_funcs ps8622_connector_funcs = {
> -	.dpms = drm_helper_connector_dpms,
> +	.dpms = drm_atomic_helper_connector_dpms,
>  	.fill_modes = drm_helper_probe_single_connector_modes,
>  	.detect = ps8622_detect,
>  	.destroy = ps8622_connector_destroy,
> diff --git a/drivers/gpu/drm/bridge/ptn3460.c b/drivers/gpu/drm/bridge/ptn3460.c
> index 8ed3617..260bc9f 100644
> --- a/drivers/gpu/drm/bridge/ptn3460.c
> +++ b/drivers/gpu/drm/bridge/ptn3460.c
> @@ -260,7 +260,7 @@ static void ptn3460_connector_destroy(struct drm_connector *connector)
>  }
>  
>  static struct drm_connector_funcs ptn3460_connector_funcs = {
> -	.dpms = drm_helper_connector_dpms,
> +	.dpms = drm_atomic_helper_connector_dpms,
>  	.fill_modes = drm_helper_probe_single_connector_modes,
>  	.detect = ptn3460_detect,
>  	.destroy = ptn3460_connector_destroy,
> diff --git a/drivers/gpu/drm/exynos/exynos_dp_core.c b/drivers/gpu/drm/exynos/exynos_dp_core.c
> index 195fe60..c9995b1 100644
> --- a/drivers/gpu/drm/exynos/exynos_dp_core.c
> +++ b/drivers/gpu/drm/exynos/exynos_dp_core.c
> @@ -954,7 +954,7 @@ static void exynos_dp_connector_destroy(struct drm_connector *connector)
>  }
>  
>  static struct drm_connector_funcs exynos_dp_connector_funcs = {
> -	.dpms = drm_helper_connector_dpms,
> +	.dpms = drm_atomic_helper_connector_dpms,
>  	.fill_modes = drm_helper_probe_single_connector_modes,
>  	.detect = exynos_dp_detect,
>  	.destroy = exynos_dp_connector_destroy,
> diff --git a/drivers/gpu/drm/exynos/exynos_drm_crtc.c b/drivers/gpu/drm/exynos/exynos_drm_crtc.c
> index fd5ef2c..ca501a9 100644
> --- a/drivers/gpu/drm/exynos/exynos_drm_crtc.c
> +++ b/drivers/gpu/drm/exynos/exynos_drm_crtc.c
> @@ -22,48 +22,54 @@
>  #include "exynos_drm_encoder.h"
>  #include "exynos_drm_plane.h"
>  
> -static void exynos_drm_crtc_dpms(struct drm_crtc *crtc, int mode)
> +static void exynos_drm_crtc_enable(struct drm_crtc *crtc)
>  {
>  	struct exynos_drm_crtc *exynos_crtc = to_exynos_crtc(crtc);
> +	struct exynos_drm_plane *exynos_plane = to_exynos_plane(crtc->primary);
>  
> -	DRM_DEBUG_KMS("crtc[%d] mode[%d]\n", crtc->base.id, mode);
> -
> -	if (exynos_crtc->dpms == mode) {
> -		DRM_DEBUG_KMS("desired dpms mode is same as previous one.\n");
> +	if (exynos_crtc->enabled)
>  		return;
> -	}
> -
> -	if (mode > DRM_MODE_DPMS_ON) {
> -		/* wait for the completion of page flip. */
> -		if (!wait_event_timeout(exynos_crtc->pending_flip_queue,
> -				(exynos_crtc->event == NULL), HZ/20))
> -			exynos_crtc->event = NULL;
> -		drm_crtc_vblank_off(crtc);
> -	}
>  
>  	if (exynos_crtc->ops->dpms)
> -		exynos_crtc->ops->dpms(exynos_crtc, mode);
> +		exynos_crtc->ops->dpms(exynos_crtc, DRM_MODE_DPMS_ON);
>  
> -	exynos_crtc->dpms = mode;
> +	exynos_crtc->enabled = true;
>  
> -	if (mode == DRM_MODE_DPMS_ON)
> -		drm_crtc_vblank_on(crtc);
> -}
> +	drm_crtc_vblank_on(crtc);
>  
> -static void exynos_drm_crtc_prepare(struct drm_crtc *crtc)
> -{
> -	/* drm framework doesn't check NULL. */
> +	if (exynos_crtc->ops->win_commit)
> +		exynos_crtc->ops->win_commit(exynos_crtc, exynos_plane->zpos);

Unnecessary also? because be called by exynos_plane_atomic_update
already.

>  }
>  
> -static void exynos_drm_crtc_commit(struct drm_crtc *crtc)
> +static void exynos_drm_crtc_disable(struct drm_crtc *crtc)
>  {
>  	struct exynos_drm_crtc *exynos_crtc = to_exynos_crtc(crtc);
> -	struct exynos_drm_plane *exynos_plane = to_exynos_plane(crtc->primary);
> +	struct drm_plane *plane;
> +	int ret;
>  
> -	exynos_drm_crtc_dpms(crtc, DRM_MODE_DPMS_ON);
> +	if (!exynos_crtc->enabled)
> +		return;
>  
> -	if (exynos_crtc->ops->win_commit)
> -		exynos_crtc->ops->win_commit(exynos_crtc, exynos_plane->zpos);
> +	/* wait for the completion of page flip. */
> +	if (!wait_event_timeout(exynos_crtc->pending_flip_queue,
> +				(exynos_crtc->event == NULL), HZ/20))
> +		exynos_crtc->event = NULL;
> +
> +	drm_crtc_vblank_off(crtc);
> +
> +	if (exynos_crtc->ops->dpms)
> +		exynos_crtc->ops->dpms(exynos_crtc, DRM_MODE_DPMS_OFF);
> +
> +	exynos_crtc->enabled = false;
> +
> +	drm_for_each_legacy_plane(plane, &crtc->dev->mode_config.plane_list) {
> +		if (plane->crtc != crtc)
> +			continue;
> +
> +		ret = plane->funcs->disable_plane(plane);
> +		if (ret)
> +			DRM_ERROR("Failed to disable plane %d\n", ret);
> +	}
>  }
>  
>  static bool
> @@ -92,32 +98,36 @@ exynos_drm_crtc_mode_set_nofb(struct drm_crtc *crtc)
>  		exynos_crtc->ops->commit(exynos_crtc);
>  }
>  
> -static void exynos_drm_crtc_disable(struct drm_crtc *crtc)
> +static int exynos_crtc_atomic_check(struct drm_crtc *crtc,
> +				     struct drm_crtc_state *state)
>  {
> -	struct drm_plane *plane;
> +	struct exynos_drm_crtc *exynos_crtc = to_exynos_crtc(crtc);
>  	int ret;
>  
> -	exynos_drm_crtc_dpms(crtc, DRM_MODE_DPMS_OFF);
> +	if (exynos_crtc->event)
> +		return -EBUSY;
>  
> -	drm_for_each_legacy_plane(plane, &crtc->dev->mode_config.plane_list) {
> -		if (plane->crtc != crtc)
> -			continue;
> +	if (state->event) {
> +		ret = drm_vblank_get(crtc->dev, exynos_crtc->pipe);
> +		if (ret) {
> +			DRM_ERROR("failed to acquire vblank counter\n");
> +			return ret;
> +		}
>  
> -		ret = plane->funcs->disable_plane(plane);
> -		if (ret)
> -			DRM_ERROR("Failed to disable plane %d\n", ret);
> +		exynos_crtc->event = state->event;
>  	}
> +
> +	return 0;

Should this go to .atomic_begin? Then you are missing drm_vblank_get
from a patch "drm/exynos: atomic phase 3: convert page flips"?

>  }
>  
>  static struct drm_crtc_helper_funcs exynos_crtc_helper_funcs = {
> -	.dpms		= exynos_drm_crtc_dpms,
> -	.prepare	= exynos_drm_crtc_prepare,
> -	.commit		= exynos_drm_crtc_commit,

This .prepare and .prepare of encoder_helper_funcs are not used by
drm_atomic_helper_set_config so you can remove them from "drm/exynos:
atomic phase 3: use atomic .set_config helper"?

> +	.enable		= exynos_drm_crtc_enable,
> +	.disable	= exynos_drm_crtc_disable,
>  	.mode_fixup	= exynos_drm_crtc_mode_fixup,
>  	.mode_set	= drm_helper_crtc_mode_set,
>  	.mode_set_nofb	= exynos_drm_crtc_mode_set_nofb,
>  	.mode_set_base	= drm_helper_crtc_mode_set_base,
> -	.disable	= exynos_drm_crtc_disable,

Could you make a split patch to move exynos_drm_crtc_disable function?
If not, we are difficult to understand code changes via diff.

Thanks.
_______________________________________________
dri-devel mailing list
dri-devel@lists.freedesktop.org
http://lists.freedesktop.org/mailman/listinfo/dri-devel