diff mbox series

[v2] drm/meson: Fix atomic mode switching regression

Message ID 20190114153118.8024-1-narmstrong@baylibre.com (mailing list archive)
State New, archived
Headers show
Series [v2] drm/meson: Fix atomic mode switching regression | expand

Commit Message

Neil Armstrong Jan. 14, 2019, 3:31 p.m. UTC 
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>
---
 drivers/gpu/drm/meson/meson_crtc.c | 23 ++---------------------
 drivers/gpu/drm/meson/meson_drv.c  |  6 ++++++
 2 files changed, 8 insertions(+), 21 deletions(-)

Changes since v1:
- drop the unecessary local ->enabled logic
- use drm_atomic_helper_commit_tail_rpm as atomic_commit_tail helper

Comments

Daniel Vetter Jan. 15, 2019, 12:06 p.m. UTC | #1 
On Mon, Jan 14, 2019 at 04:31:18PM +0100, Neil Armstrong wrote:
> 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>

For the record (I already acked this on irc):

Acked-by: Daniel Vetter <daniel.vetter@ffwll.ch>
> ---
>  drivers/gpu/drm/meson/meson_crtc.c | 23 ++---------------------
>  drivers/gpu/drm/meson/meson_drv.c  |  6 ++++++
>  2 files changed, 8 insertions(+), 21 deletions(-)
> 
> Changes since v1:
> - drop the unecessary local ->enabled logic
> - use drm_atomic_helper_commit_tail_rpm as atomic_commit_tail helper
> 
> diff --git a/drivers/gpu/drm/meson/meson_crtc.c b/drivers/gpu/drm/meson/meson_crtc.c
> index 75d97f1b2e8f..4f5c67f70c4d 100644
> --- a/drivers/gpu/drm/meson/meson_crtc.c
> +++ b/drivers/gpu/drm/meson/meson_crtc.c
> @@ -46,7 +46,6 @@ 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)
>  
> @@ -82,7 +81,8 @@ static const struct drm_crtc_funcs meson_crtc_funcs = {
>  
>  };
>  
> -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;
> @@ -108,20 +108,6 @@ static void meson_crtc_enable(struct drm_crtc *crtc)
>  
>  	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;
>  }
>  
> @@ -153,8 +139,6 @@ static void meson_crtc_atomic_disable(struct drm_crtc *crtc,
>  
>  		crtc->state->event = NULL;
>  	}
> -
> -	meson_crtc->enabled = false;
>  }
>  
>  static void meson_crtc_atomic_begin(struct drm_crtc *crtc,
> @@ -163,9 +147,6 @@ static void meson_crtc_atomic_begin(struct drm_crtc *crtc,
>  	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);
>  
> diff --git a/drivers/gpu/drm/meson/meson_drv.c b/drivers/gpu/drm/meson/meson_drv.c
> index 3ee4d4a4ecba..a74d861ddceb 100644
> --- a/drivers/gpu/drm/meson/meson_drv.c
> +++ b/drivers/gpu/drm/meson/meson_drv.c
> @@ -75,6 +75,11 @@ static const struct drm_mode_config_funcs meson_mode_config_funcs = {
>  	.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;
> @@ -266,6 +271,7 @@ static int meson_drv_bind_master(struct device *dev, bool has_components)
>  	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 */
>  
> -- 
> 2.20.1
>
Neil Armstrong Jan. 15, 2019, 12:18 p.m. UTC | #2 
On 15/01/2019 13:06, Daniel Vetter wrote:
> On Mon, Jan 14, 2019 at 04:31:18PM +0100, Neil Armstrong wrote:
>> 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>
> 
> For the record (I already acked this on irc):

Thanks, I got it, I was checking against the known regression to see if it doesn't
add a new one !

> 
> Acked-by: Daniel Vetter <daniel.vetter@ffwll.ch>

Applied to drm-misc-fixes

Neil

>> ---
>>  drivers/gpu/drm/meson/meson_crtc.c | 23 ++---------------------
>>  drivers/gpu/drm/meson/meson_drv.c  |  6 ++++++
>>  2 files changed, 8 insertions(+), 21 deletions(-)
>>
>> Changes since v1:
>> - drop the unecessary local ->enabled logic
>> - use drm_atomic_helper_commit_tail_rpm as atomic_commit_tail helper
>>
>> diff --git a/drivers/gpu/drm/meson/meson_crtc.c b/drivers/gpu/drm/meson/meson_crtc.c
>> index 75d97f1b2e8f..4f5c67f70c4d 100644
>> --- a/drivers/gpu/drm/meson/meson_crtc.c
>> +++ b/drivers/gpu/drm/meson/meson_crtc.c
>> @@ -46,7 +46,6 @@ 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)
>>  
>> @@ -82,7 +81,8 @@ static const struct drm_crtc_funcs meson_crtc_funcs = {
>>  
>>  };
>>  
>> -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;
>> @@ -108,20 +108,6 @@ static void meson_crtc_enable(struct drm_crtc *crtc)
>>  
>>  	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;
>>  }
>>  
>> @@ -153,8 +139,6 @@ static void meson_crtc_atomic_disable(struct drm_crtc *crtc,
>>  
>>  		crtc->state->event = NULL;
>>  	}
>> -
>> -	meson_crtc->enabled = false;
>>  }
>>  
>>  static void meson_crtc_atomic_begin(struct drm_crtc *crtc,
>> @@ -163,9 +147,6 @@ static void meson_crtc_atomic_begin(struct drm_crtc *crtc,
>>  	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);
>>  
>> diff --git a/drivers/gpu/drm/meson/meson_drv.c b/drivers/gpu/drm/meson/meson_drv.c
>> index 3ee4d4a4ecba..a74d861ddceb 100644
>> --- a/drivers/gpu/drm/meson/meson_drv.c
>> +++ b/drivers/gpu/drm/meson/meson_drv.c
>> @@ -75,6 +75,11 @@ static const struct drm_mode_config_funcs meson_mode_config_funcs = {
>>  	.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;
>> @@ -266,6 +271,7 @@ static int meson_drv_bind_master(struct device *dev, bool has_components)
>>  	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 */
>>  
>> -- 
>> 2.20.1
>>
>
Neil Armstrong Jan. 28, 2019, 4:21 p.m. UTC | #3 
Hi Stable kernel team,

On 14/01/2019 16:31, Neil Armstrong wrote:
> 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>

This fix has landed in linus master with id ce0210c12433031aba3bbacd75f4c02ab77f2004

could it be applied to 4.19 and 4.20 stable trees ?

Thanks,
Neil

> ---
>  drivers/gpu/drm/meson/meson_crtc.c | 23 ++---------------------
>  drivers/gpu/drm/meson/meson_drv.c  |  6 ++++++
>  2 files changed, 8 insertions(+), 21 deletions(-)
> 
> Changes since v1:
> - drop the unecessary local ->enabled logic
> - use drm_atomic_helper_commit_tail_rpm as atomic_commit_tail helper
> 
> diff --git a/drivers/gpu/drm/meson/meson_crtc.c b/drivers/gpu/drm/meson/meson_crtc.c
> index 75d97f1b2e8f..4f5c67f70c4d 100644
> --- a/drivers/gpu/drm/meson/meson_crtc.c
> +++ b/drivers/gpu/drm/meson/meson_crtc.c
> @@ -46,7 +46,6 @@ 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)
>  
> @@ -82,7 +81,8 @@ static const struct drm_crtc_funcs meson_crtc_funcs = {
>  
>  };
>  
> -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;
> @@ -108,20 +108,6 @@ static void meson_crtc_enable(struct drm_crtc *crtc)
>  
>  	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;
>  }
>  
> @@ -153,8 +139,6 @@ static void meson_crtc_atomic_disable(struct drm_crtc *crtc,
>  
>  		crtc->state->event = NULL;
>  	}
> -
> -	meson_crtc->enabled = false;
>  }
>  
>  static void meson_crtc_atomic_begin(struct drm_crtc *crtc,
> @@ -163,9 +147,6 @@ static void meson_crtc_atomic_begin(struct drm_crtc *crtc,
>  	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);
>  
> diff --git a/drivers/gpu/drm/meson/meson_drv.c b/drivers/gpu/drm/meson/meson_drv.c
> index 3ee4d4a4ecba..a74d861ddceb 100644
> --- a/drivers/gpu/drm/meson/meson_drv.c
> +++ b/drivers/gpu/drm/meson/meson_drv.c
> @@ -75,6 +75,11 @@ static const struct drm_mode_config_funcs meson_mode_config_funcs = {
>  	.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;
> @@ -266,6 +271,7 @@ static int meson_drv_bind_master(struct device *dev, bool has_components)
>  	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 */
>  
>
Greg KH Jan. 28, 2019, 4:55 p.m. UTC | #4 
On Mon, Jan 28, 2019 at 05:21:12PM +0100, Neil Armstrong wrote:
> Hi Stable kernel team,
> 
> On 14/01/2019 16:31, Neil Armstrong wrote:
> > 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>
> 
> This fix has landed in linus master with id ce0210c12433031aba3bbacd75f4c02ab77f2004
> 
> could it be applied to 4.19 and 4.20 stable trees ?

Now queued up, thanks.

greg k-h
diff mbox series

Patch

diff --git a/drivers/gpu/drm/meson/meson_crtc.c b/drivers/gpu/drm/meson/meson_crtc.c
index 75d97f1b2e8f..4f5c67f70c4d 100644
--- a/drivers/gpu/drm/meson/meson_crtc.c
+++ b/drivers/gpu/drm/meson/meson_crtc.c
@@ -46,7 +46,6 @@  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)
 
@@ -82,7 +81,8 @@  static const struct drm_crtc_funcs meson_crtc_funcs = {
 
 };
 
-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;
@@ -108,20 +108,6 @@  static void meson_crtc_enable(struct drm_crtc *crtc)
 
 	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;
 }
 
@@ -153,8 +139,6 @@  static void meson_crtc_atomic_disable(struct drm_crtc *crtc,
 
 		crtc->state->event = NULL;
 	}
-
-	meson_crtc->enabled = false;
 }
 
 static void meson_crtc_atomic_begin(struct drm_crtc *crtc,
@@ -163,9 +147,6 @@  static void meson_crtc_atomic_begin(struct drm_crtc *crtc,
 	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);
 
diff --git a/drivers/gpu/drm/meson/meson_drv.c b/drivers/gpu/drm/meson/meson_drv.c
index 3ee4d4a4ecba..a74d861ddceb 100644
--- a/drivers/gpu/drm/meson/meson_drv.c
+++ b/drivers/gpu/drm/meson/meson_drv.c
@@ -75,6 +75,11 @@  static const struct drm_mode_config_funcs meson_mode_config_funcs = {
 	.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;
@@ -266,6 +271,7 @@  static int meson_drv_bind_master(struct device *dev, bool has_components)
 	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 */