* [PATCH v3] drm/exynos: calculate vrefresh instead of use a fixed value
@ 2015-05-20 20:56 Gustavo Padovan
2015-05-20 21:07 ` Tobias Jakobi
2015-05-20 22:19 ` Tobias Jakobi
0 siblings, 2 replies; 5+ messages in thread
From: Gustavo Padovan @ 2015-05-20 20:56 UTC (permalink / raw)
To: linux-samsung-soc; +Cc: tjakobi, dri-devel, Gustavo Padovan
From: Gustavo Padovan <gustavo.padovan@collabora.co.uk>
When mode's vrefresh is zero we should ask DRM core to calculate vrefresh
for us so we can get the correct value instead of relying on fixed value
defined in a macro. But if vrefresh is still zero we should fail the
update.
Suggested-by: Daniel Stone <daniels@collabora.com>
Signed-off-by: Gustavo Padovan <gustavo.padovan@collabora.co.uk>
---
drivers/gpu/drm/exynos/exynos_drm_fimd.c | 7 ++++---
1 file changed, 4 insertions(+), 3 deletions(-)
diff --git a/drivers/gpu/drm/exynos/exynos_drm_fimd.c b/drivers/gpu/drm/exynos/exynos_drm_fimd.c
index 9819fa6..3f9646d 100644
--- a/drivers/gpu/drm/exynos/exynos_drm_fimd.c
+++ b/drivers/gpu/drm/exynos/exynos_drm_fimd.c
@@ -42,7 +42,6 @@
* CPU Interface.
*/
-#define FIMD_DEFAULT_FRAMERATE 60
#define MIN_FB_WIDTH_FOR_16WORD_BURST 128
/* position control register for hardware window 0, 2 ~ 4.*/
@@ -329,7 +328,9 @@ static bool fimd_mode_fixup(struct exynos_drm_crtc *crtc,
struct drm_display_mode *adjusted_mode)
{
if (adjusted_mode->vrefresh == 0)
- adjusted_mode->vrefresh = FIMD_DEFAULT_FRAMERATE;
+ adjusted_mode->vrefresh = drm_mode_vrefresh(mode);
+ if (adjusted_mode->vrefresh == 0)
+ return false;
return true;
}
@@ -427,7 +428,7 @@ static void fimd_commit(struct exynos_drm_crtc *crtc)
if (ctx->driver_data->has_clksel)
val |= VIDCON0_CLKSEL_LCD;
- clkdiv = fimd_calc_clkdiv(ctx, mode);
+ clkdiv = fimd_calc_clkdiv(ctx, &crtc->base.state->adjusted_mode);
if (clkdiv > 1)
val |= VIDCON0_CLKVAL_F(clkdiv - 1) | VIDCON0_CLKDIR;
--
2.1.0
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^ permalink raw reply related [flat|nested] 5+ messages in thread
* Re: [PATCH v3] drm/exynos: calculate vrefresh instead of use a fixed value
2015-05-20 20:56 [PATCH v3] drm/exynos: calculate vrefresh instead of use a fixed value Gustavo Padovan
@ 2015-05-20 21:07 ` Tobias Jakobi
2015-05-20 22:19 ` Tobias Jakobi
1 sibling, 0 replies; 5+ messages in thread
From: Tobias Jakobi @ 2015-05-20 21:07 UTC (permalink / raw)
To: Gustavo Padovan, linux-samsung-soc
Cc: dri-devel, inki.dae, jy0922.shim, daniel, Gustavo Padovan
Gustavo Padovan wrote:
> From: Gustavo Padovan <gustavo.padovan@collabora.co.uk>
>
> When mode's vrefresh is zero we should ask DRM core to calculate vrefresh
> for us so we can get the correct value instead of relying on fixed value
> defined in a macro. But if vrefresh is still zero we should fail the
> update.
>
> Suggested-by: Daniel Stone <daniels@collabora.com>
> Signed-off-by: Gustavo Padovan <gustavo.padovan@collabora.co.uk>
> ---
> drivers/gpu/drm/exynos/exynos_drm_fimd.c | 7 ++++---
> 1 file changed, 4 insertions(+), 3 deletions(-)
>
> diff --git a/drivers/gpu/drm/exynos/exynos_drm_fimd.c b/drivers/gpu/drm/exynos/exynos_drm_fimd.c
> index 9819fa6..3f9646d 100644
> --- a/drivers/gpu/drm/exynos/exynos_drm_fimd.c
> +++ b/drivers/gpu/drm/exynos/exynos_drm_fimd.c
> @@ -42,7 +42,6 @@
> * CPU Interface.
> */
>
> -#define FIMD_DEFAULT_FRAMERATE 60
> #define MIN_FB_WIDTH_FOR_16WORD_BURST 128
>
> /* position control register for hardware window 0, 2 ~ 4.*/
> @@ -329,7 +328,9 @@ static bool fimd_mode_fixup(struct exynos_drm_crtc *crtc,
> struct drm_display_mode *adjusted_mode)
> {
> if (adjusted_mode->vrefresh == 0)
> - adjusted_mode->vrefresh = FIMD_DEFAULT_FRAMERATE;
> + adjusted_mode->vrefresh = drm_mode_vrefresh(mode);
> + if (adjusted_mode->vrefresh == 0)
> + return false;
>
> return true;
> }
> @@ -427,7 +428,7 @@ static void fimd_commit(struct exynos_drm_crtc *crtc)
> if (ctx->driver_data->has_clksel)
> val |= VIDCON0_CLKSEL_LCD;
>
> - clkdiv = fimd_calc_clkdiv(ctx, mode);
> + clkdiv = fimd_calc_clkdiv(ctx, &crtc->base.state->adjusted_mode);
I would suggest to just change 'mode' at the top:
struct drm_display_mode *mode = &crtc->base.state->adjusted_mode;
With best wishes,
Tobias
> if (clkdiv > 1)
> val |= VIDCON0_CLKVAL_F(clkdiv - 1) | VIDCON0_CLKDIR;
>
>
^ permalink raw reply [flat|nested] 5+ messages in thread
* Re: [PATCH v3] drm/exynos: calculate vrefresh instead of use a fixed value
2015-05-20 20:56 [PATCH v3] drm/exynos: calculate vrefresh instead of use a fixed value Gustavo Padovan
2015-05-20 21:07 ` Tobias Jakobi
@ 2015-05-20 22:19 ` Tobias Jakobi
2015-05-21 14:06 ` Gustavo Padovan
1 sibling, 1 reply; 5+ messages in thread
From: Tobias Jakobi @ 2015-05-20 22:19 UTC (permalink / raw)
To: Gustavo Padovan, linux-samsung-soc
Cc: dri-devel, inki.dae, jy0922.shim, daniel, Gustavo Padovan
Gustavo Padovan wrote:
> From: Gustavo Padovan <gustavo.padovan@collabora.co.uk>
>
> When mode's vrefresh is zero we should ask DRM core to calculate vrefresh
> for us so we can get the correct value instead of relying on fixed value
> defined in a macro. But if vrefresh is still zero we should fail the
> update.
This works better for me:
diff --git a/drivers/gpu/drm/exynos/exynos_drm_fimd.c
b/drivers/gpu/drm/exynos/exynos_drm_fimd.c
index dc834b8..26e8ae4 100644
--- a/drivers/gpu/drm/exynos/exynos_drm_fimd.c
+++ b/drivers/gpu/drm/exynos/exynos_drm_fimd.c
@@ -346,11 +346,16 @@ static bool fimd_mode_fixup(struct exynos_drm_crtc
*crtc,
static void fimd_commit(struct exynos_drm_crtc *crtc)
{
struct fimd_context *ctx = crtc->ctx;
- struct drm_display_mode *mode = &crtc->base.mode;
+ struct drm_display_mode *mode;
struct fimd_driver_data *driver_data = ctx->driver_data;
void *timing_base = ctx->regs + driver_data->timing_base;
u32 val, clkdiv;
+ if (crtc->base.state)
+ mode = &crtc->base.state->adjusted_mode;
+ else
+ mode = &crtc->base.mode;
+
if (ctx->suspended)
return;
Otherwise I get an oops (nullptr deref) on boot, so 'state' is probably
not initialized yet at this point.
With best wishes,
Tobias Jakobi
>
> Suggested-by: Daniel Stone <daniels@collabora.com>
> Signed-off-by: Gustavo Padovan <gustavo.padovan@collabora.co.uk>
> ---
> drivers/gpu/drm/exynos/exynos_drm_fimd.c | 7 ++++---
> 1 file changed, 4 insertions(+), 3 deletions(-)
>
> diff --git a/drivers/gpu/drm/exynos/exynos_drm_fimd.c b/drivers/gpu/drm/exynos/exynos_drm_fimd.c
> index 9819fa6..3f9646d 100644
> --- a/drivers/gpu/drm/exynos/exynos_drm_fimd.c
> +++ b/drivers/gpu/drm/exynos/exynos_drm_fimd.c
> @@ -42,7 +42,6 @@
> * CPU Interface.
> */
>
> -#define FIMD_DEFAULT_FRAMERATE 60
> #define MIN_FB_WIDTH_FOR_16WORD_BURST 128
>
> /* position control register for hardware window 0, 2 ~ 4.*/
> @@ -329,7 +328,9 @@ static bool fimd_mode_fixup(struct exynos_drm_crtc *crtc,
> struct drm_display_mode *adjusted_mode)
> {
> if (adjusted_mode->vrefresh == 0)
> - adjusted_mode->vrefresh = FIMD_DEFAULT_FRAMERATE;
> + adjusted_mode->vrefresh = drm_mode_vrefresh(mode);
> + if (adjusted_mode->vrefresh == 0)
> + return false;
>
> return true;
> }
> @@ -427,7 +428,7 @@ static void fimd_commit(struct exynos_drm_crtc *crtc)
> if (ctx->driver_data->has_clksel)
> val |= VIDCON0_CLKSEL_LCD;
>
> - clkdiv = fimd_calc_clkdiv(ctx, mode);
> + clkdiv = fimd_calc_clkdiv(ctx, &crtc->base.state->adjusted_mode);
> if (clkdiv > 1)
> val |= VIDCON0_CLKVAL_F(clkdiv - 1) | VIDCON0_CLKDIR;
>
>
^ permalink raw reply related [flat|nested] 5+ messages in thread
* Re: [PATCH v3] drm/exynos: calculate vrefresh instead of use a fixed value
2015-05-20 22:19 ` Tobias Jakobi
@ 2015-05-21 14:06 ` Gustavo Padovan
2015-05-21 15:10 ` Tobias Jakobi
0 siblings, 1 reply; 5+ messages in thread
From: Gustavo Padovan @ 2015-05-21 14:06 UTC (permalink / raw)
To: Tobias Jakobi
Cc: linux-samsung-soc, dri-devel, inki.dae, jy0922.shim, daniel,
Gustavo Padovan
Hi Tobias,
2015-05-21 Tobias Jakobi <tjakobi@math.uni-bielefeld.de>:
> Gustavo Padovan wrote:
> > From: Gustavo Padovan <gustavo.padovan@collabora.co.uk>
> >
> > When mode's vrefresh is zero we should ask DRM core to calculate vrefresh
> > for us so we can get the correct value instead of relying on fixed value
> > defined in a macro. But if vrefresh is still zero we should fail the
> > update.
> This works better for me:
> diff --git a/drivers/gpu/drm/exynos/exynos_drm_fimd.c
> b/drivers/gpu/drm/exynos/exynos_drm_fimd.c
> index dc834b8..26e8ae4 100644
> --- a/drivers/gpu/drm/exynos/exynos_drm_fimd.c
> +++ b/drivers/gpu/drm/exynos/exynos_drm_fimd.c
> @@ -346,11 +346,16 @@ static bool fimd_mode_fixup(struct exynos_drm_crtc
> *crtc,
> static void fimd_commit(struct exynos_drm_crtc *crtc)
> {
> struct fimd_context *ctx = crtc->ctx;
> - struct drm_display_mode *mode = &crtc->base.mode;
> + struct drm_display_mode *mode;
> struct fimd_driver_data *driver_data = ctx->driver_data;
> void *timing_base = ctx->regs + driver_data->timing_base;
> u32 val, clkdiv;
>
> + if (crtc->base.state)
> + mode = &crtc->base.state->adjusted_mode;
> + else
> + mode = &crtc->base.mode;
> +
> if (ctx->suspended)
> return;
>
> Otherwise I get an oops (nullptr deref) on boot, so 'state' is probably
> not initialized yet at this point.
Would you like to send a proper git patch of this? You can move the
drm_mode_vrefresh() part to your patch.
Gustavo
^ permalink raw reply [flat|nested] 5+ messages in thread
* Re: [PATCH v3] drm/exynos: calculate vrefresh instead of use a fixed value
2015-05-21 14:06 ` Gustavo Padovan
@ 2015-05-21 15:10 ` Tobias Jakobi
0 siblings, 0 replies; 5+ messages in thread
From: Tobias Jakobi @ 2015-05-21 15:10 UTC (permalink / raw)
To: Gustavo Padovan, Tobias Jakobi, linux-samsung-soc, dri-devel,
inki.dae, jy0922.shim, daniel, Gustavo Padovan
Hey,
On 2015-05-21 16:06, Gustavo Padovan wrote:
> Hi Tobias,
>
> 2015-05-21 Tobias Jakobi <tjakobi@math.uni-bielefeld.de>:
>
>> Gustavo Padovan wrote:
>> > From: Gustavo Padovan <gustavo.padovan@collabora.co.uk>
>> >
>> > When mode's vrefresh is zero we should ask DRM core to calculate vrefresh
>> > for us so we can get the correct value instead of relying on fixed value
>> > defined in a macro. But if vrefresh is still zero we should fail the
>> > update.
>> This works better for me:
>> diff --git a/drivers/gpu/drm/exynos/exynos_drm_fimd.c
>> b/drivers/gpu/drm/exynos/exynos_drm_fimd.c
>> index dc834b8..26e8ae4 100644
>> --- a/drivers/gpu/drm/exynos/exynos_drm_fimd.c
>> +++ b/drivers/gpu/drm/exynos/exynos_drm_fimd.c
>> @@ -346,11 +346,16 @@ static bool fimd_mode_fixup(struct
>> exynos_drm_crtc
>> *crtc,
>> static void fimd_commit(struct exynos_drm_crtc *crtc)
>> {
>> struct fimd_context *ctx = crtc->ctx;
>> - struct drm_display_mode *mode = &crtc->base.mode;
>> + struct drm_display_mode *mode;
>> struct fimd_driver_data *driver_data = ctx->driver_data;
>> void *timing_base = ctx->regs + driver_data->timing_base;
>> u32 val, clkdiv;
>>
>> + if (crtc->base.state)
>> + mode = &crtc->base.state->adjusted_mode;
>> + else
>> + mode = &crtc->base.mode;
>> +
>> if (ctx->suspended)
>> return;
>>
>> Otherwise I get an oops (nullptr deref) on boot, so 'state' is
>> probably
>> not initialized yet at this point.
>
> Would you like to send a proper git patch of this? You can move the
> drm_mode_vrefresh() part to your patch.
I'll try to send out something later this day.
With best wishes,
Tobias
>
> Gustavo
^ permalink raw reply [flat|nested] 5+ messages in thread
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2015-05-20 20:56 [PATCH v3] drm/exynos: calculate vrefresh instead of use a fixed value Gustavo Padovan
2015-05-20 21:07 ` Tobias Jakobi
2015-05-20 22:19 ` Tobias Jakobi
2015-05-21 14:06 ` Gustavo Padovan
2015-05-21 15:10 ` Tobias Jakobi
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