[PATCH] drm/exynos: remove hardware overlays disable from fimd probe

[PATCH] drm/exynos: remove hardware overlays disable from fimd probe

[Rahul Sharma]

System hangs when FIMD registers are accessed to disable
hardware overlays. This is because of the clocks which are
not enabled before register access.

'Hardware overlay disable' is cleaned from the FIMD probe.

Signed-off-by: Rahul Sharma <rahul.sharma@samsung.com>
---
Based on exynos-drm-next branch.

 drivers/gpu/drm/exynos/exynos_drm_fimd.c |   17 -----------------
 1 file changed, 17 deletions(-)

diff --git a/drivers/gpu/drm/exynos/exynos_drm_fimd.c b/drivers/gpu/drm/exynos/exynos_drm_fimd.c
index bd30d0c..2ec634f 100644
--- a/drivers/gpu/drm/exynos/exynos_drm_fimd.c
+++ b/drivers/gpu/drm/exynos/exynos_drm_fimd.c
@@ -703,19 +703,6 @@ static void fimd_win_disable(struct exynos_drm_manager *mgr, int zpos)
 	win_data->enabled = false;
 }
 
-static void fimd_clear_win(struct fimd_context *ctx, int win)
-{
-	writel(0, ctx->regs + WINCON(win));
-	writel(0, ctx->regs + VIDOSD_A(win));
-	writel(0, ctx->regs + VIDOSD_B(win));
-	writel(0, ctx->regs + VIDOSD_C(win));
-
-	if (win == 1 || win == 2)
-		writel(0, ctx->regs + VIDOSD_D(win));
-
-	fimd_shadow_protect_win(ctx, win, false);
-}
-
 static void fimd_window_suspend(struct exynos_drm_manager *mgr)
 {
 	struct fimd_context *ctx = mgr->ctx;
@@ -898,16 +885,12 @@ static int fimd_bind(struct device *dev, struct device *master, void *data)
 {
 	struct fimd_context *ctx = fimd_manager.ctx;
 	struct drm_device *drm_dev = data;
-	int win;
 
 	fimd_mgr_initialize(&fimd_manager, drm_dev);
 	exynos_drm_crtc_create(&fimd_manager);
 	if (ctx->display)
 		exynos_drm_create_enc_conn(drm_dev, ctx->display);
 
-	for (win = 0; win < WINDOWS_NR; win++)
-		fimd_clear_win(ctx, win);
-
 	return 0;
 
 }
-- 
1.7.9.5

Re: [PATCH] drm/exynos: remove hardware overlays disable from fimd probe

[Andrzej Hajda]

Hi Rahul,

On 05/28/2014 08:11 AM, Rahul Sharma wrote:
> System hangs when FIMD registers are accessed to disable
> hardware overlays. This is because of the clocks which are
> not enabled before register access.
> 
> 'Hardware overlay disable' is cleaned from the FIMD probe.
> 
> Signed-off-by: Rahul Sharma <rahul.sharma@samsung.com>

This patch causes regression on some exynos4210-universal_c210 devices,
everything works expect colors are incorrect - it seems blue component
is very dark, almost black.

Regards
Andrzej

> ---
> Based on exynos-drm-next branch.
> 
>  drivers/gpu/drm/exynos/exynos_drm_fimd.c |   17 -----------------
>  1 file changed, 17 deletions(-)
> 
> diff --git a/drivers/gpu/drm/exynos/exynos_drm_fimd.c b/drivers/gpu/drm/exynos/exynos_drm_fimd.c
> index bd30d0c..2ec634f 100644
> --- a/drivers/gpu/drm/exynos/exynos_drm_fimd.c
> +++ b/drivers/gpu/drm/exynos/exynos_drm_fimd.c
> @@ -703,19 +703,6 @@ static void fimd_win_disable(struct exynos_drm_manager *mgr, int zpos)
>  	win_data->enabled = false;
>  }
>  
> -static void fimd_clear_win(struct fimd_context *ctx, int win)
> -{
> -	writel(0, ctx->regs + WINCON(win));
> -	writel(0, ctx->regs + VIDOSD_A(win));
> -	writel(0, ctx->regs + VIDOSD_B(win));
> -	writel(0, ctx->regs + VIDOSD_C(win));
> -
> -	if (win == 1 || win == 2)
> -		writel(0, ctx->regs + VIDOSD_D(win));
> -
> -	fimd_shadow_protect_win(ctx, win, false);
> -}
> -
>  static void fimd_window_suspend(struct exynos_drm_manager *mgr)
>  {
>  	struct fimd_context *ctx = mgr->ctx;
> @@ -898,16 +885,12 @@ static int fimd_bind(struct device *dev, struct device *master, void *data)
>  {
>  	struct fimd_context *ctx = fimd_manager.ctx;
>  	struct drm_device *drm_dev = data;
> -	int win;
>  
>  	fimd_mgr_initialize(&fimd_manager, drm_dev);
>  	exynos_drm_crtc_create(&fimd_manager);
>  	if (ctx->display)
>  		exynos_drm_create_enc_conn(drm_dev, ctx->display);
>  
> -	for (win = 0; win < WINDOWS_NR; win++)
> -		fimd_clear_win(ctx, win);
> -
>  	return 0;
>  
>  }
> 

Re: [PATCH] drm/exynos: remove hardware overlays disable from fimd probe

[Rahul Sharma]

On 2 June 2014 14:41, Andrzej Hajda <a.hajda@samsung.com> wrote:
> Hi Rahul,
>
> On 05/28/2014 08:11 AM, Rahul Sharma wrote:
>> System hangs when FIMD registers are accessed to disable
>> hardware overlays. This is because of the clocks which are
>> not enabled before register access.
>>
>> 'Hardware overlay disable' is cleaned from the FIMD probe.
>>
>> Signed-off-by: Rahul Sharma <rahul.sharma@samsung.com>
>
> This patch causes regression on some exynos4210-universal_c210 devices,
> everything works expect colors are incorrect - it seems blue component
> is very dark, almost black.
>

Oh.... Sorry for that. I did not see any problem on 5250/5420/5800. I do not
have setup for 4210. Better we should revert this patch.

Would you please help me by verifying the following patch on 4210? This
is an alternate solution to the same problem.

http://www.mail-archive.com/linux-samsung-soc@vger.kernel.org/msg31426.html

Thanks Andrej, for bringing it to notice.

Regards,
Rahul Sharma

> Regards
> Andrzej
>
>> ---
>> Based on exynos-drm-next branch.
>>
>>  drivers/gpu/drm/exynos/exynos_drm_fimd.c |   17 -----------------
>>  1 file changed, 17 deletions(-)
>>
>> diff --git a/drivers/gpu/drm/exynos/exynos_drm_fimd.c b/drivers/gpu/drm/exynos/exynos_drm_fimd.c
>> index bd30d0c..2ec634f 100644
>> --- a/drivers/gpu/drm/exynos/exynos_drm_fimd.c
>> +++ b/drivers/gpu/drm/exynos/exynos_drm_fimd.c
>> @@ -703,19 +703,6 @@ static void fimd_win_disable(struct exynos_drm_manager *mgr, int zpos)
>>       win_data->enabled = false;
>>  }
>>
>> -static void fimd_clear_win(struct fimd_context *ctx, int win)
>> -{
>> -     writel(0, ctx->regs + WINCON(win));
>> -     writel(0, ctx->regs + VIDOSD_A(win));
>> -     writel(0, ctx->regs + VIDOSD_B(win));
>> -     writel(0, ctx->regs + VIDOSD_C(win));
>> -
>> -     if (win == 1 || win == 2)
>> -             writel(0, ctx->regs + VIDOSD_D(win));
>> -
>> -     fimd_shadow_protect_win(ctx, win, false);
>> -}
>> -
>>  static void fimd_window_suspend(struct exynos_drm_manager *mgr)
>>  {
>>       struct fimd_context *ctx = mgr->ctx;
>> @@ -898,16 +885,12 @@ static int fimd_bind(struct device *dev, struct device *master, void *data)
>>  {
>>       struct fimd_context *ctx = fimd_manager.ctx;
>>       struct drm_device *drm_dev = data;
>> -     int win;
>>
>>       fimd_mgr_initialize(&fimd_manager, drm_dev);
>>       exynos_drm_crtc_create(&fimd_manager);
>>       if (ctx->display)
>>               exynos_drm_create_enc_conn(drm_dev, ctx->display);
>>
>> -     for (win = 0; win < WINDOWS_NR; win++)
>> -             fimd_clear_win(ctx, win);
>> -
>>       return 0;
>>
>>  }
>>
>

Re: [PATCH] drm/exynos: remove hardware overlays disable from fimd probe

[Tomasz Figa]

Hi Rahul, Andrzej,

On 02.06.2014 11:42, Rahul Sharma wrote:
> On 2 June 2014 14:41, Andrzej Hajda <a.hajda@samsung.com> wrote:
>> Hi Rahul,
>>
>> On 05/28/2014 08:11 AM, Rahul Sharma wrote:
>>> System hangs when FIMD registers are accessed to disable
>>> hardware overlays. This is because of the clocks which are
>>> not enabled before register access.
>>>
>>> 'Hardware overlay disable' is cleaned from the FIMD probe.
>>>
>>> Signed-off-by: Rahul Sharma <rahul.sharma@samsung.com>
>>
>> This patch causes regression on some exynos4210-universal_c210 devices,
>> everything works expect colors are incorrect - it seems blue component
>> is very dark, almost black.
>>
> 
> Oh.... Sorry for that. I did not see any problem on 5250/5420/5800. I do not
> have setup for 4210. Better we should revert this patch.
> 
> Would you please help me by verifying the following patch on 4210? This
> is an alternate solution to the same problem.
> 
> http://www.mail-archive.com/linux-samsung-soc@vger.kernel.org/msg31426.html
> 
> Thanks Andrej, for bringing it to notice.

I don't see how this patch could introduce such regression, as all the
affected registers seem to be properly reconfigured in fimd_win_commit()
anyway.

IMHO instead of reverting the patch, this issue should be investigated
and fixed properly.

Best regards,
Tomasz

Re: [PATCH] drm/exynos: remove hardware overlays disable from fimd probe

[YoungJun Cho]

Hi Rahul,

On 06/02/2014 06:42 PM, Rahul Sharma wrote:
> On 2 June 2014 14:41, Andrzej Hajda <a.hajda@samsung.com> wrote:
>> Hi Rahul,
>>
>> On 05/28/2014 08:11 AM, Rahul Sharma wrote:
>>> System hangs when FIMD registers are accessed to disable
>>> hardware overlays. This is because of the clocks which are
>>> not enabled before register access.
>>>
>>> 'Hardware overlay disable' is cleaned from the FIMD probe.
>>>
>>> Signed-off-by: Rahul Sharma <rahul.sharma@samsung.com>
>>
>> This patch causes regression on some exynos4210-universal_c210 devices,
>> everything works expect colors are incorrect - it seems blue component
>> is very dark, almost black.
>>
>
> Oh.... Sorry for that. I did not see any problem on 5250/5420/5800. I do not
> have setup for 4210. Better we should revert this patch.
>
> Would you please help me by verifying the following patch on 4210? This
> is an alternate solution to the same problem.
>
> http://www.mail-archive.com/linux-samsung-soc@vger.kernel.org/msg31426.html

In my humble opinion, the patch is required to modify like below:

+       ret = pm_runtime_get_sync(ctx->dev);
+       if (ret < 0) {

When the bootloader enabled FIMD to show logo(boot image) or animation,
this function pm_runtime_get_sync() in fimd_bind() would return 1.

Thank you.
Best regards YJ

>
> Thanks Andrej, for bringing it to notice.
>
> Regards,
> Rahul Sharma
>
>> Regards
>> Andrzej
>>
>>> ---
>>> Based on exynos-drm-next branch.
>>>
>>>   drivers/gpu/drm/exynos/exynos_drm_fimd.c |   17 -----------------
>>>   1 file changed, 17 deletions(-)
>>>
>>> diff --git a/drivers/gpu/drm/exynos/exynos_drm_fimd.c b/drivers/gpu/drm/exynos/exynos_drm_fimd.c
>>> index bd30d0c..2ec634f 100644
>>> --- a/drivers/gpu/drm/exynos/exynos_drm_fimd.c
>>> +++ b/drivers/gpu/drm/exynos/exynos_drm_fimd.c
>>> @@ -703,19 +703,6 @@ static void fimd_win_disable(struct exynos_drm_manager *mgr, int zpos)
>>>        win_data->enabled = false;
>>>   }
>>>
>>> -static void fimd_clear_win(struct fimd_context *ctx, int win)
>>> -{
>>> -     writel(0, ctx->regs + WINCON(win));
>>> -     writel(0, ctx->regs + VIDOSD_A(win));
>>> -     writel(0, ctx->regs + VIDOSD_B(win));
>>> -     writel(0, ctx->regs + VIDOSD_C(win));
>>> -
>>> -     if (win == 1 || win == 2)
>>> -             writel(0, ctx->regs + VIDOSD_D(win));
>>> -
>>> -     fimd_shadow_protect_win(ctx, win, false);
>>> -}
>>> -
>>>   static void fimd_window_suspend(struct exynos_drm_manager *mgr)
>>>   {
>>>        struct fimd_context *ctx = mgr->ctx;
>>> @@ -898,16 +885,12 @@ static int fimd_bind(struct device *dev, struct device *master, void *data)
>>>   {
>>>        struct fimd_context *ctx = fimd_manager.ctx;
>>>        struct drm_device *drm_dev = data;
>>> -     int win;
>>>
>>>        fimd_mgr_initialize(&fimd_manager, drm_dev);
>>>        exynos_drm_crtc_create(&fimd_manager);
>>>        if (ctx->display)
>>>                exynos_drm_create_enc_conn(drm_dev, ctx->display);
>>>
>>> -     for (win = 0; win < WINDOWS_NR; win++)
>>> -             fimd_clear_win(ctx, win);
>>> -
>>>        return 0;
>>>
>>>   }
>>>
>>
> _______________________________________________
> dri-devel mailing list
> dri-devel@lists.freedesktop.org
> http://lists.freedesktop.org/mailman/listinfo/dri-devel
>

Re: [PATCH] drm/exynos: remove hardware overlays disable from fimd probe

[Andrzej Hajda]

On 06/02/2014 12:11 PM, Tomasz Figa wrote:
> Hi Rahul, Andrzej,
> 
> On 02.06.2014 11:42, Rahul Sharma wrote:
>> On 2 June 2014 14:41, Andrzej Hajda <a.hajda@samsung.com> wrote:
>>> Hi Rahul,
>>>
>>> On 05/28/2014 08:11 AM, Rahul Sharma wrote:
>>>> System hangs when FIMD registers are accessed to disable
>>>> hardware overlays. This is because of the clocks which are
>>>> not enabled before register access.
>>>>
>>>> 'Hardware overlay disable' is cleaned from the FIMD probe.
>>>>
>>>> Signed-off-by: Rahul Sharma <rahul.sharma@samsung.com>
>>>
>>> This patch causes regression on some exynos4210-universal_c210 devices,
>>> everything works expect colors are incorrect - it seems blue component
>>> is very dark, almost black.
>>>
>>
>> Oh.... Sorry for that. I did not see any problem on 5250/5420/5800. I do not
>> have setup for 4210. Better we should revert this patch.
>>
>> Would you please help me by verifying the following patch on 4210? This
>> is an alternate solution to the same problem.
>>
>> http://www.mail-archive.com/linux-samsung-soc@vger.kernel.org/msg31426.html
>>
>> Thanks Andrej, for bringing it to notice.
> 
> I don't see how this patch could introduce such regression, as all the
> affected registers seem to be properly reconfigured in fimd_win_commit()
> anyway.
> 
> IMHO instead of reverting the patch, this issue should be investigated
> and fixed properly.
> 
> Best regards,
> Tomasz
> 

I am looking at the problem, it is quite strange as it happens only on
one of two targets I have access to. Anyway it seems that something
should be added to fimd initialization sequence if we want to remove hw
accessing code from probe.

Regards
Andrzej

Re: [PATCH] drm/exynos: remove hardware overlays disable from fimd probe

[Inki Dae]

On 2014년 06월 02일 18:42, Rahul Sharma wrote:
> On 2 June 2014 14:41, Andrzej Hajda <a.hajda@samsung.com> wrote:
>> Hi Rahul,
>>
>> On 05/28/2014 08:11 AM, Rahul Sharma wrote:
>>> System hangs when FIMD registers are accessed to disable
>>> hardware overlays. This is because of the clocks which are
>>> not enabled before register access.
>>>
>>> 'Hardware overlay disable' is cleaned from the FIMD probe.
>>>
>>> Signed-off-by: Rahul Sharma <rahul.sharma@samsung.com>
>>
>> This patch causes regression on some exynos4210-universal_c210 devices,
>> everything works expect colors are incorrect - it seems blue component
>> is very dark, almost black.

That issue would be because your boot-loader enabled a hardware overlay
but kernel driver enables another hardware overlay, which would also be
why it happens only on one target of your targets, and why it works
correctly by cleaning hardware overlays at fimd probe.

>>
> 
> Oh.... Sorry for that. I did not see any problem on 5250/5420/5800. I do not
> have setup for 4210. Better we should revert this patch.
> 

No, it should work correctly as is because fimd overlays will be
reconfigured at booting time by register_framebuffer() if console
framebuffer is enabled. Otherwise, a master process, X or Weston, will
reconfigure fimd overlays after kernel booting.

Thanks,
Inki Dae

> Would you please help me by verifying the following patch on 4210? This
> is an alternate solution to the same problem.
> 
> http://www.mail-archive.com/linux-samsung-soc@vger.kernel.org/msg31426.html
> 
> Thanks Andrej, for bringing it to notice.
> 
> Regards,
> Rahul Sharma
> 
>> Regards
>> Andrzej
>>
>>> ---
>>> Based on exynos-drm-next branch.
>>>
>>>  drivers/gpu/drm/exynos/exynos_drm_fimd.c |   17 -----------------
>>>  1 file changed, 17 deletions(-)
>>>
>>> diff --git a/drivers/gpu/drm/exynos/exynos_drm_fimd.c b/drivers/gpu/drm/exynos/exynos_drm_fimd.c
>>> index bd30d0c..2ec634f 100644
>>> --- a/drivers/gpu/drm/exynos/exynos_drm_fimd.c
>>> +++ b/drivers/gpu/drm/exynos/exynos_drm_fimd.c
>>> @@ -703,19 +703,6 @@ static void fimd_win_disable(struct exynos_drm_manager *mgr, int zpos)
>>>       win_data->enabled = false;
>>>  }
>>>
>>> -static void fimd_clear_win(struct fimd_context *ctx, int win)
>>> -{
>>> -     writel(0, ctx->regs + WINCON(win));
>>> -     writel(0, ctx->regs + VIDOSD_A(win));
>>> -     writel(0, ctx->regs + VIDOSD_B(win));
>>> -     writel(0, ctx->regs + VIDOSD_C(win));
>>> -
>>> -     if (win == 1 || win == 2)
>>> -             writel(0, ctx->regs + VIDOSD_D(win));
>>> -
>>> -     fimd_shadow_protect_win(ctx, win, false);
>>> -}
>>> -
>>>  static void fimd_window_suspend(struct exynos_drm_manager *mgr)
>>>  {
>>>       struct fimd_context *ctx = mgr->ctx;
>>> @@ -898,16 +885,12 @@ static int fimd_bind(struct device *dev, struct device *master, void *data)
>>>  {
>>>       struct fimd_context *ctx = fimd_manager.ctx;
>>>       struct drm_device *drm_dev = data;
>>> -     int win;
>>>
>>>       fimd_mgr_initialize(&fimd_manager, drm_dev);
>>>       exynos_drm_crtc_create(&fimd_manager);
>>>       if (ctx->display)
>>>               exynos_drm_create_enc_conn(drm_dev, ctx->display);
>>>
>>> -     for (win = 0; win < WINDOWS_NR; win++)
>>> -             fimd_clear_win(ctx, win);
>>> -
>>>       return 0;
>>>
>>>  }
>>>
>>
> 

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Re: [PATCH] drm/exynos: remove hardware overlays disable from fimd probe

[Andrzej Hajda]

On 06/02/2014 12:42 PM, Andrzej Hajda wrote:
> On 06/02/2014 12:11 PM, Tomasz Figa wrote:
>> Hi Rahul, Andrzej,
>>
>> On 02.06.2014 11:42, Rahul Sharma wrote:
>>> On 2 June 2014 14:41, Andrzej Hajda <a.hajda@samsung.com> wrote:
>>>> Hi Rahul,
>>>>
>>>> On 05/28/2014 08:11 AM, Rahul Sharma wrote:
>>>>> System hangs when FIMD registers are accessed to disable
>>>>> hardware overlays. This is because of the clocks which are
>>>>> not enabled before register access.
>>>>>
>>>>> 'Hardware overlay disable' is cleaned from the FIMD probe.
>>>>>
>>>>> Signed-off-by: Rahul Sharma <rahul.sharma@samsung.com>
>>>>
>>>> This patch causes regression on some exynos4210-universal_c210 devices,
>>>> everything works expect colors are incorrect - it seems blue component
>>>> is very dark, almost black.
>>>>
>>>
>>> Oh.... Sorry for that. I did not see any problem on 5250/5420/5800. I do not
>>> have setup for 4210. Better we should revert this patch.
>>>
>>> Would you please help me by verifying the following patch on 4210? This
>>> is an alternate solution to the same problem.
>>>
>>> http://www.mail-archive.com/linux-samsung-soc@vger.kernel.org/msg31426.html
>>>
>>> Thanks Andrej, for bringing it to notice.
>>
>> I don't see how this patch could introduce such regression, as all the
>> affected registers seem to be properly reconfigured in fimd_win_commit()
>> anyway.
>>
>> IMHO instead of reverting the patch, this issue should be investigated
>> and fixed properly.
>>
>> Best regards,
>> Tomasz
>>
> 
> I am looking at the problem, it is quite strange as it happens only on
> one of two targets I have access to. Anyway it seems that something
> should be added to fimd initialization sequence if we want to remove hw
> accessing code from probe.

The problem is that fimd does not clear unused windows.
Simple patch which helps:

diff --git a/drivers/gpu/drm/exynos/exynos_drm_fimd.c
b/drivers/gpu/drm/exynos/exynos_drm_fimd.c
index 2ec634f..b58fce2 100644
--- a/drivers/gpu/drm/exynos/exynos_drm_fimd.c
+++ b/drivers/gpu/drm/exynos/exynos_drm_fimd.c
@@ -741,6 +741,8 @@ static void fimd_apply(struct exynos_drm_manager *mgr)
                win_data = &ctx->win_data[i];
                if (win_data->enabled)
                        fimd_win_commit(mgr, i);
+               else
+                       fimd_win_disable(mgr, i);
        }

        fimd_commit(mgr);

But I am not fully familiar with window management code, so I do not
know if it does not breaks other stuff.

Regards
Andrzej

> 
> Regards
> Andrzej
> 

Re: [PATCH] drm/exynos: remove hardware overlays disable from fimd probe

[Inki Dae]

On 2014년 06월 02일 20:48, Andrzej Hajda wrote:
> On 06/02/2014 12:42 PM, Andrzej Hajda wrote:
>> On 06/02/2014 12:11 PM, Tomasz Figa wrote:
>>> Hi Rahul, Andrzej,
>>>
>>> On 02.06.2014 11:42, Rahul Sharma wrote:
>>>> On 2 June 2014 14:41, Andrzej Hajda <a.hajda@samsung.com> wrote:
>>>>> Hi Rahul,
>>>>>
>>>>> On 05/28/2014 08:11 AM, Rahul Sharma wrote:
>>>>>> System hangs when FIMD registers are accessed to disable
>>>>>> hardware overlays. This is because of the clocks which are
>>>>>> not enabled before register access.
>>>>>>
>>>>>> 'Hardware overlay disable' is cleaned from the FIMD probe.
>>>>>>
>>>>>> Signed-off-by: Rahul Sharma <rahul.sharma@samsung.com>
>>>>>
>>>>> This patch causes regression on some exynos4210-universal_c210 devices,
>>>>> everything works expect colors are incorrect - it seems blue component
>>>>> is very dark, almost black.
>>>>>
>>>>
>>>> Oh.... Sorry for that. I did not see any problem on 5250/5420/5800. I do not
>>>> have setup for 4210. Better we should revert this patch.
>>>>
>>>> Would you please help me by verifying the following patch on 4210? This
>>>> is an alternate solution to the same problem.
>>>>
>>>> http://www.mail-archive.com/linux-samsung-soc@vger.kernel.org/msg31426.html
>>>>
>>>> Thanks Andrej, for bringing it to notice.
>>>
>>> I don't see how this patch could introduce such regression, as all the
>>> affected registers seem to be properly reconfigured in fimd_win_commit()
>>> anyway.
>>>
>>> IMHO instead of reverting the patch, this issue should be investigated
>>> and fixed properly.
>>>
>>> Best regards,
>>> Tomasz
>>>
>>
>> I am looking at the problem, it is quite strange as it happens only on
>> one of two targets I have access to. Anyway it seems that something
>> should be added to fimd initialization sequence if we want to remove hw
>> accessing code from probe.
> 
> The problem is that fimd does not clear unused windows.
> Simple patch which helps:
> 
> diff --git a/drivers/gpu/drm/exynos/exynos_drm_fimd.c
> b/drivers/gpu/drm/exynos/exynos_drm_fimd.c
> index 2ec634f..b58fce2 100644
> --- a/drivers/gpu/drm/exynos/exynos_drm_fimd.c
> +++ b/drivers/gpu/drm/exynos/exynos_drm_fimd.c
> @@ -741,6 +741,8 @@ static void fimd_apply(struct exynos_drm_manager *mgr)
>                 win_data = &ctx->win_data[i];
>                 if (win_data->enabled)
>                         fimd_win_commit(mgr, i);
> +               else
> +                       fimd_win_disable(mgr, i);
>         }
> 
>         fimd_commit(mgr);
> 
> But I am not fully familiar with window management code, so I do not
> know if it does not breaks other stuff.

It looks good to me. Can you post it?

Thanks,
Inki Dae

> 
> Regards
> Andrzej
> 
>>
>> Regards
>> Andrzej
>>
> 
> 

[PATCH] drm/exynos: disable unused windows on apply

[Andrzej Hajda]

The patch disables non-enabled HW windows on applying
configuration, it will allow to clear windows enabled
by bootloader.

Signed-off-by: Andrzej Hajda <a.hajda@samsung.com>
---
 drivers/gpu/drm/exynos/exynos_drm_fimd.c | 2 ++
 1 file changed, 2 insertions(+)

diff --git a/drivers/gpu/drm/exynos/exynos_drm_fimd.c b/drivers/gpu/drm/exynos/exynos_drm_fimd.c
index bb45ab2..33161ad 100644
--- a/drivers/gpu/drm/exynos/exynos_drm_fimd.c
+++ b/drivers/gpu/drm/exynos/exynos_drm_fimd.c
@@ -741,6 +741,8 @@ static void fimd_apply(struct exynos_drm_manager *mgr)
 		win_data = &ctx->win_data[i];
 		if (win_data->enabled)
 			fimd_win_commit(mgr, i);
+		else
+			fimd_win_disable(mgr, i);
 	}
 
 	fimd_commit(mgr);
-- 
1.9.1

Re: [PATCH] drm/exynos: disable unused windows on apply

[Andrzej Hajda]

Gently ping.

Regards
Andrzej

On 06/09/2014 04:10 PM, Andrzej Hajda wrote:
> The patch disables non-enabled HW windows on applying
> configuration, it will allow to clear windows enabled
> by bootloader.
>
> Signed-off-by: Andrzej Hajda <a.hajda@samsung.com>
> ---
>  drivers/gpu/drm/exynos/exynos_drm_fimd.c | 2 ++
>  1 file changed, 2 insertions(+)
>
> diff --git a/drivers/gpu/drm/exynos/exynos_drm_fimd.c b/drivers/gpu/drm/exynos/exynos_drm_fimd.c
> index bb45ab2..33161ad 100644
> --- a/drivers/gpu/drm/exynos/exynos_drm_fimd.c
> +++ b/drivers/gpu/drm/exynos/exynos_drm_fimd.c
> @@ -741,6 +741,8 @@ static void fimd_apply(struct exynos_drm_manager *mgr)
>  		win_data = &ctx->win_data[i];
>  		if (win_data->enabled)
>  			fimd_win_commit(mgr, i);
> +		else
> +			fimd_win_disable(mgr, i);
>  	}
>  
>  	fimd_commit(mgr);

Re: [PATCH] drm/exynos: disable unused windows on apply

[Inki Dae]

On 2014년 06월 23일 21:12, Andrzej Hajda wrote:
> Gently ping.


Oops, sorry. Applied.

Thanks,
Inki Dae

> 
> Regards
> Andrzej
> 
> On 06/09/2014 04:10 PM, Andrzej Hajda wrote:
>> The patch disables non-enabled HW windows on applying
>> configuration, it will allow to clear windows enabled
>> by bootloader.
>>
>> Signed-off-by: Andrzej Hajda <a.hajda@samsung.com>
>> ---
>>  drivers/gpu/drm/exynos/exynos_drm_fimd.c | 2 ++
>>  1 file changed, 2 insertions(+)
>>
>> diff --git a/drivers/gpu/drm/exynos/exynos_drm_fimd.c b/drivers/gpu/drm/exynos/exynos_drm_fimd.c
>> index bb45ab2..33161ad 100644
>> --- a/drivers/gpu/drm/exynos/exynos_drm_fimd.c
>> +++ b/drivers/gpu/drm/exynos/exynos_drm_fimd.c
>> @@ -741,6 +741,8 @@ static void fimd_apply(struct exynos_drm_manager *mgr)
>>  		win_data = &ctx->win_data[i];
>>  		if (win_data->enabled)
>>  			fimd_win_commit(mgr, i);
>> +		else
>> +			fimd_win_disable(mgr, i);
>>  	}
>>  
>>  	fimd_commit(mgr);
> 
> 

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