[PATCH v7 12/13] drm/exynos: atomic dpms support
Gustavo Padovan
gustavo at padovan.org
Wed May 27 12:26:50 PDT 2015
Hi Joonyoung,
2015-05-27 Joonyoung Shim <jy0922.shim at 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 at 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 at collabora.co.uk>
> > Reviewed-by: Joonyoung Shim <jy0922.shim at samsung.com>
> > Tested-by: Tobias Jakobi <tjakobi at 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.
It is, I already had a patch queued here that was removing this call,
but let's remove it now in this commit.
>
> > }
> >
> > -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"?
Yeah, makes more sense. I moved it to that commit and changed it to
atomic_begin.
>
> > }
> >
> > 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"?
Done.
>
> > + .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.
Done.
Gustavo
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