4.20-stable review patch. If anyone has any objections, please let me know.
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From: Neil Armstrong narmstrong@baylibre.com
commit ce0210c12433031aba3bbacd75f4c02ab77f2004 upstream.
Since commit 2bcd3ecab773 when switching mode from X11 (ubuntu mate for example) the display gets blurry, looking like an invalid framebuffer width.
This commit fixed atomic crtc modesetting in a totally wrong way and introduced a local unnecessary ->enabled crtc state.
This commit reverts the crctc _begin() and _enable() changes and simply adds drm_atomic_helper_commit_tail_rpm as helper.
Reported-by: Tony McKahan tonymckahan@gmail.com Suggested-by: Daniel Vetter daniel@ffwll.ch Fixes: 2bcd3ecab773 ("drm/meson: Fixes for drm_crtc_vblank_on/off support") Signed-off-by: Neil Armstrong narmstrong@baylibre.com Acked-by: Daniel Vetter daniel.vetter@ffwll.ch [narmstrong: fixed blank line issue from checkpatch] Link: https://patchwork.freedesktop.org/patch/msgid/20190114153118.8024-1-narmstro... Signed-off-by: Greg Kroah-Hartman gregkh@linuxfoundation.org
--- drivers/gpu/drm/meson/meson_crtc.c | 23 ++--------------------- drivers/gpu/drm/meson/meson_drv.c | 5 +++++ 2 files changed, 7 insertions(+), 21 deletions(-)
--- a/drivers/gpu/drm/meson/meson_crtc.c +++ b/drivers/gpu/drm/meson/meson_crtc.c @@ -45,7 +45,6 @@ struct meson_crtc { struct drm_crtc base; struct drm_pending_vblank_event *event; struct meson_drm *priv; - bool enabled; }; #define to_meson_crtc(x) container_of(x, struct meson_crtc, base)
@@ -81,7 +80,8 @@ static const struct drm_crtc_funcs meson
};
-static void meson_crtc_enable(struct drm_crtc *crtc) +static void meson_crtc_atomic_enable(struct drm_crtc *crtc, + struct drm_crtc_state *old_state) { struct meson_crtc *meson_crtc = to_meson_crtc(crtc); struct drm_crtc_state *crtc_state = crtc->state; @@ -103,20 +103,6 @@ static void meson_crtc_enable(struct drm
drm_crtc_vblank_on(crtc);
- meson_crtc->enabled = true; -} - -static void meson_crtc_atomic_enable(struct drm_crtc *crtc, - struct drm_crtc_state *old_state) -{ - struct meson_crtc *meson_crtc = to_meson_crtc(crtc); - struct meson_drm *priv = meson_crtc->priv; - - DRM_DEBUG_DRIVER("\n"); - - if (!meson_crtc->enabled) - meson_crtc_enable(crtc); - priv->viu.osd1_enabled = true; }
@@ -142,8 +128,6 @@ static void meson_crtc_atomic_disable(st
crtc->state->event = NULL; } - - meson_crtc->enabled = false; }
static void meson_crtc_atomic_begin(struct drm_crtc *crtc, @@ -152,9 +136,6 @@ static void meson_crtc_atomic_begin(stru struct meson_crtc *meson_crtc = to_meson_crtc(crtc); unsigned long flags;
- if (crtc->state->enable && !meson_crtc->enabled) - meson_crtc_enable(crtc); - if (crtc->state->event) { WARN_ON(drm_crtc_vblank_get(crtc) != 0);
--- a/drivers/gpu/drm/meson/meson_drv.c +++ b/drivers/gpu/drm/meson/meson_drv.c @@ -82,6 +82,10 @@ static const struct drm_mode_config_func .fb_create = drm_gem_fb_create, };
+static const struct drm_mode_config_helper_funcs meson_mode_config_helpers = { + .atomic_commit_tail = drm_atomic_helper_commit_tail_rpm, +}; + static irqreturn_t meson_irq(int irq, void *arg) { struct drm_device *dev = arg; @@ -246,6 +250,7 @@ static int meson_drv_bind_master(struct drm->mode_config.max_width = 3840; drm->mode_config.max_height = 2160; drm->mode_config.funcs = &meson_mode_config_funcs; + drm->mode_config.helper_private = &meson_mode_config_helpers;
/* Hardware Initialization */