On Fri, Oct 5, 2018 at 4:59 AM Inki Dae <inki.dae@xxxxxxxxxxx> wrote:
>
> This reverts commit 0586feba322e1de05075700eb4b835c8b683e62b
>
> This patch makes it to need get_vblank_counter callback in crtc
> to get frame counter from decon driver.
>
> However, drm_dev->max_vblank_count is a member unique to
> vendor's DRM driver but in case of ARM DRM, some CRTC devices
> don't provide the frame counter value. As a result, this patch
> made extension and clone mode not working.
>
> Instead of this patch, we may need separated max_vblank_count
> which belongs to each CRTC device, or need to implement frame
> counter emulation for them who don't support HW frame counter.
I think addin drm_crtc->max_vblank_count would make tons of sense,
we've moved a bunch of the other vblank things in there too in the
past. The logic in drm_vblank.c could be
-Daniel
>
> Signed-off-by: Inki Dae <inki.dae@xxxxxxxxxxx>
> ---
> drivers/gpu/drm/exynos/exynos5433_drm_decon.c | 9 ---------
> drivers/gpu/drm/exynos/exynos_drm_crtc.c | 11 -----------
> drivers/gpu/drm/exynos/exynos_drm_drv.h | 1 -
> 3 files changed, 21 deletions(-)
>
> diff --git a/drivers/gpu/drm/exynos/exynos5433_drm_decon.c b/drivers/gpu/drm/exynos/exynos5433_drm_decon.c
> index 94529aa..aef487d 100644
> --- a/drivers/gpu/drm/exynos/exynos5433_drm_decon.c
> +++ b/drivers/gpu/drm/exynos/exynos5433_drm_decon.c
> @@ -164,13 +164,6 @@ static u32 decon_get_frame_count(struct decon_context *ctx, bool end)
> return frm;
> }
>
> -static u32 decon_get_vblank_counter(struct exynos_drm_crtc *crtc)
> -{
> - struct decon_context *ctx = crtc->ctx;
> -
> - return decon_get_frame_count(ctx, false);
> -}
> -
> static void decon_setup_trigger(struct decon_context *ctx)
> {
> if (!ctx->crtc->i80_mode && !(ctx->out_type & I80_HW_TRG))
> @@ -536,7 +529,6 @@ static const struct exynos_drm_crtc_ops decon_crtc_ops = {
> .disable = decon_disable,
> .enable_vblank = decon_enable_vblank,
> .disable_vblank = decon_disable_vblank,
> - .get_vblank_counter = decon_get_vblank_counter,
> .atomic_begin = decon_atomic_begin,
> .update_plane = decon_update_plane,
> .disable_plane = decon_disable_plane,
> @@ -554,7 +546,6 @@ static int decon_bind(struct device *dev, struct device *master, void *data)
> int ret;
>
> ctx->drm_dev = drm_dev;
> - drm_dev->max_vblank_count = 0xffffffff;
>
> for (win = ctx->first_win; win < WINDOWS_NR; win++) {
> ctx->configs[win].pixel_formats = decon_formats;
> diff --git a/drivers/gpu/drm/exynos/exynos_drm_crtc.c b/drivers/gpu/drm/exynos/exynos_drm_crtc.c
> index eea9025..2696289 100644
> --- a/drivers/gpu/drm/exynos/exynos_drm_crtc.c
> +++ b/drivers/gpu/drm/exynos/exynos_drm_crtc.c
> @@ -162,16 +162,6 @@ static void exynos_drm_crtc_disable_vblank(struct drm_crtc *crtc)
> exynos_crtc->ops->disable_vblank(exynos_crtc);
> }
>
> -static u32 exynos_drm_crtc_get_vblank_counter(struct drm_crtc *crtc)
> -{
> - struct exynos_drm_crtc *exynos_crtc = to_exynos_crtc(crtc);
> -
> - if (exynos_crtc->ops->get_vblank_counter)
> - return exynos_crtc->ops->get_vblank_counter(exynos_crtc);
> -
> - return 0;
> -}
> -
> static const struct drm_crtc_funcs exynos_crtc_funcs = {
> .set_config = drm_atomic_helper_set_config,
> .page_flip = drm_atomic_helper_page_flip,
> @@ -181,7 +171,6 @@ static const struct drm_crtc_funcs exynos_crtc_funcs = {
> .atomic_destroy_state = drm_atomic_helper_crtc_destroy_state,
> .enable_vblank = exynos_drm_crtc_enable_vblank,
> .disable_vblank = exynos_drm_crtc_disable_vblank,
> - .get_vblank_counter = exynos_drm_crtc_get_vblank_counter,
> };
>
> struct exynos_drm_crtc *exynos_drm_crtc_create(struct drm_device *drm_dev,
> diff --git a/drivers/gpu/drm/exynos/exynos_drm_drv.h b/drivers/gpu/drm/exynos/exynos_drm_drv.h
> index ec9604f..5e61e70 100644
> --- a/drivers/gpu/drm/exynos/exynos_drm_drv.h
> +++ b/drivers/gpu/drm/exynos/exynos_drm_drv.h
> @@ -135,7 +135,6 @@ struct exynos_drm_crtc_ops {
> void (*disable)(struct exynos_drm_crtc *crtc);
> int (*enable_vblank)(struct exynos_drm_crtc *crtc);
> void (*disable_vblank)(struct exynos_drm_crtc *crtc);
> - u32 (*get_vblank_counter)(struct exynos_drm_crtc *crtc);
> enum drm_mode_status (*mode_valid)(struct exynos_drm_crtc *crtc,
> const struct drm_display_mode *mode);
> bool (*mode_fixup)(struct exynos_drm_crtc *crtc,
> --
> 2.7.4
>
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> https://lists.freedesktop.org/mailman/listinfo/dri-devel
--
Daniel Vetter
Software Engineer, Intel Corporation
+41 (0) 79 365 57 48 - http://blog.ffwll.ch
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