Hi,
On 01/30/2015 09:24 AM, Joonyoung Shim wrote:
> +Cc dri-devel ML.
>
> Hi Alban,
>
> On 01/30/2015 06:18 AM, Alban Browaeys wrote:
>> The hdmi outputs black screen only even though under the hood Xorg and
>> framebuffer console are fine : devices found and initialized, but
>> not a pixel out.
>>
>> Commit 93bca243ec96 ("drm/exynos: remove struct exynos_drm_manager")
>> changed the call order of mixer_initialize with regards to
>> exynos_drm_crtc_create.
>>
>
> Right, there is no any reason to change order but i don't think it
> causes problem because they don't any dependency.
>
OK, i also get blank screen from hdmi after enable vidi.
>> This changes breaks hdmi out on Odroid U2 (linux-next with added
>> Marek Szyprowski v4 hdmi patchset from linux-samsung-soc ML).
>>
>
> I tested Odroid U3 but hdmi out is working well.
>
> Thanks.
>
>> Restore the previous call ordering get hdmi to ouput proper pixels:
>> ie call mixer_initialize first then exynos_drm_crtc_create.
>>
>> Fixes: 93bca243ec96 ("drm/exynos: remove struct exynos_drm_manager")
>> Signed-off-by: Alban Browaeys <prahal@xxxxxxxxx>
>> ---
>> drivers/gpu/drm/exynos/exynos_mixer.c | 9 +++++----
>> 1 file changed, 5 insertions(+), 4 deletions(-)
>>
>> diff --git a/drivers/gpu/drm/exynos/exynos_mixer.c b/drivers/gpu/drm/exynos/exynos_mixer.c
>> index d8fd8e1..188f90f 100644
>> --- a/drivers/gpu/drm/exynos/exynos_mixer.c
>> +++ b/drivers/gpu/drm/exynos/exynos_mixer.c
>> @@ -1258,18 +1258,19 @@ static int mixer_bind(struct device *dev, struct device *manager, void *data)
>> struct drm_device *drm_dev = data;
>> int ret;
>>
>> + ret = mixer_initialize(ctx, drm_dev);
>> + if (ret)
>> + return ret;
>> +
The pipe value for crtc is increased in mixer_initialize so it should be
called before exynos_drm_crtc_create because the pipe value is used in
exynos_drm_crtc_create.
Acked-by: Joonyoung Shim <jy0922.shim@xxxxxxxxxxx>
Fimd and VIDI driver also have same issue. I will post the patch to fix
this for Fimd and VIDI driver.
Thanks.
>> ctx->crtc = exynos_drm_crtc_create(drm_dev, ctx->pipe,
>> EXYNOS_DISPLAY_TYPE_HDMI,
>> &mixer_crtc_ops, ctx);
>> if (IS_ERR(ctx->crtc)) {
>> + mixer_ctx_remove(ctx);
>> ret = PTR_ERR(ctx->crtc);
>> goto free_ctx;
>> }
>>
>> - ret = mixer_initialize(ctx, drm_dev);
>> - if (ret)
>> - goto free_ctx;
>> -
>> return 0;
>>
>> free_ctx:
>>
>
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