On Wed, Feb 10, 2016 at 10:19:21AM +0000, Carlos Palminha wrote:
> Hi guys,
>
> I agree that this should be fixed in the helper library.
> There are already a lot of drivers that copy/paste code and several helper functions that do not avoid it.
>
> I will start sending some patches to fix this type of issue in several places of DRM helper functions.
Awesome, thanks a lot for doing this.
-Daniel
>
> Regards,
> C.Palminha
>
> On 09-02-2016 09:24, Daniel Vetter wrote:
> > On Thu, Feb 04, 2016 at 09:27:24PM +0100, Lars-Peter Clausen wrote:
> >> On 02/04/2016 04:22 PM, Carlos Palminha wrote:
> >>> Hi guys,
> >>>
> >>> any feedback? patch will be accepted for adv7511 driver?
> >>
> >> Hi,
> >>
> >> Thanks for the patch, but please try to find and fix the call site that is
> >> trying to invoke the callback even though it does not exist.
> >>
> >> This is most likely drm_i2c_encoder_mode_fixup().
> >
> > Agreed, this should be fixed in the helper library, not in drivers by
> > copypasting piles more dummy functions.
> > -Daniel
> >
> >>
> >> - Lars
> >>
> >>>
> >>> Regards,
> >>> C.Palminha
> >>>
> >>> On 01-02-2016 12:37, Carlos Palminha wrote:
> >>>> Hi Laurent
> >>>>
> >>>> On 29-01-2016 17:48, Laurent Pinchart wrote:
> >>>>> Hi Carlos,
> >>>>>
> >>>>> Thank you for the patch.
> >>>>>
> >>>>> On Friday 29 January 2016 10:33:47 Carlos Palminha wrote:
> >>>>>> The mode_fixup is necessary when using it in a DRM FB driver pipeline.
> >>>>>
> >>>>> Instead of implementing stubs in encoder drivers, wouldn't it be better to
> >>>>> make mode_fixup optional ?
> >>>> Probably you are right but i don't have enough knowledge or time to do that for the DRM framework. :(
> >>>> I limited myself to do what the other drivers already implement.
> >>>>
> >>>> The patch is mandatory to have to the ADV working or else will get some NULL pointer crash.
> >>>>
> >>>> Regards,
> >>>> C.Palminha
> >>>>
> >>>>>
> >>>>>> Signed-off-by: Carlos Palminha <palminha@xxxxxxxxxxxx>
> >>>>>> ---
> >>>>>> drivers/gpu/drm/i2c/adv7511.c | 8 ++++++++
> >>>>>> 1 file changed, 8 insertions(+)
> >>>>>>
> >>>>>> diff --git a/drivers/gpu/drm/i2c/adv7511.c b/drivers/gpu/drm/i2c/adv7511.c
> >>>>>> index 533d1e3..90082d2 100644
> >>>>>> --- a/drivers/gpu/drm/i2c/adv7511.c
> >>>>>> +++ b/drivers/gpu/drm/i2c/adv7511.c
> >>>>>> @@ -648,6 +648,13 @@ adv7511_encoder_detect(struct drm_encoder *encoder,
> >>>>>> return status;
> >>>>>> }
> >>>>>>
> >>>>>> +static bool adv7511_encoder_mode_fixup(struct drm_encoder *encoder,
> >>>>>> + const struct drm_display_mode *mode,
> >>>>>> + struct drm_display_mode *adjusted_mode)
> >>>>>> +{
> >>>>>> + return true;
> >>>>>> +}
> >>>>>> +
> >>>>>> static int adv7511_encoder_mode_valid(struct drm_encoder *encoder,
> >>>>>> struct drm_display_mode *mode)
> >>>>>> {
> >>>>>> @@ -754,6 +761,7 @@ static void adv7511_encoder_mode_set(struct drm_encoder
> >>>>>> *encoder,
> >>>>>>
> >>>>>> static const struct drm_encoder_slave_funcs adv7511_encoder_funcs = {
> >>>>>> .dpms = adv7511_encoder_dpms,
> >>>>>> + .mode_fixup = adv7511_encoder_mode_fixup,
> >>>>>> .mode_valid = adv7511_encoder_mode_valid,
> >>>>>> .mode_set = adv7511_encoder_mode_set,
> >>>>>> .detect = adv7511_encoder_detect,
> >>>>>
> >>>>
> >>>>
> >>>> On 29-01-2016 17:48, Laurent Pinchart wrote:
> >>>>> Hi Carlos,
> >>>>>
> >>>>> Thank you for the patch.
> >>>>>
> >>>>> On Friday 29 January 2016 10:33:47 Carlos Palminha wrote:
> >>>>>> The mode_fixup is necessary when using it in a DRM FB driver pipeline.
> >>>>>
> >>>>> Instead of implementing stubs in encoder drivers, wouldn't it be better to
> >>>>> make mode_fixup optional ?
> >>>>>
> >>>>>> Signed-off-by: Carlos Palminha <palminha@xxxxxxxxxxxx>
> >>>>>> ---
> >>>>>> drivers/gpu/drm/i2c/adv7511.c | 8 ++++++++
> >>>>>> 1 file changed, 8 insertions(+)
> >>>>>>
> >>>>>> diff --git a/drivers/gpu/drm/i2c/adv7511.c b/drivers/gpu/drm/i2c/adv7511.c
> >>>>>> index 533d1e3..90082d2 100644
> >>>>>> --- a/drivers/gpu/drm/i2c/adv7511.c
> >>>>>> +++ b/drivers/gpu/drm/i2c/adv7511.c
> >>>>>> @@ -648,6 +648,13 @@ adv7511_encoder_detect(struct drm_encoder *encoder,
> >>>>>> return status;
> >>>>>> }
> >>>>>>
> >>>>>> +static bool adv7511_encoder_mode_fixup(struct drm_encoder *encoder,
> >>>>>> + const struct drm_display_mode *mode,
> >>>>>> + struct drm_display_mode *adjusted_mode)
> >>>>>> +{
> >>>>>> + return true;
> >>>>>> +}
> >>>>>> +
> >>>>>> static int adv7511_encoder_mode_valid(struct drm_encoder *encoder,
> >>>>>> struct drm_display_mode *mode)
> >>>>>> {
> >>>>>> @@ -754,6 +761,7 @@ static void adv7511_encoder_mode_set(struct drm_encoder
> >>>>>> *encoder,
> >>>>>>
> >>>>>> static const struct drm_encoder_slave_funcs adv7511_encoder_funcs = {
> >>>>>> .dpms = adv7511_encoder_dpms,
> >>>>>> + .mode_fixup = adv7511_encoder_mode_fixup,
> >>>>>> .mode_valid = adv7511_encoder_mode_valid,
> >>>>>> .mode_set = adv7511_encoder_mode_set,
> >>>>>> .detect = adv7511_encoder_detect,
> >>>>>
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> >>>
> >>
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> >
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--
Daniel Vetter
Software Engineer, Intel Corporation
http://blog.ffwll.ch
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