On 08/26/2014 07:57 AM, Joonyoung Shim wrote:
> Hi Andrzej,
>
> On 08/22/2014 04:52 PM, Andrzej Hajda wrote:
>> FIMC in default mode of operation uses only one input buffer,
>> but the driver used also second buffer, as a result only the
>> first frame was processed correctly. The patch fixes it.
> I can't understand well, then we don't need to distinguish buf_id in
> fimc_src_set_addr()?
Yes. FIMC in default operation mode uses only one input buffer pointer
which should
be updated when processing of the previous buffer has been finished.
There exists also ping-pong mode which uses two buffer pointers, as I
have spotted in
specs. However I have not seen it was implemented neither in drm,
neither in camera drivers.
I will try to implement it later.
Regards
Andrzej
>
>> Signed-off-by: Andrzej Hajda <a.hajda@xxxxxxxxxxx>
>> ---
>> drivers/gpu/drm/exynos/exynos_drm_fimc.c | 16 ++++++++--------
>> 1 file changed, 8 insertions(+), 8 deletions(-)
>>
>> diff --git a/drivers/gpu/drm/exynos/exynos_drm_fimc.c b/drivers/gpu/drm/exynos/exynos_drm_fimc.c
>> index b20078e..e985253 100644
>> --- a/drivers/gpu/drm/exynos/exynos_drm_fimc.c
>> +++ b/drivers/gpu/drm/exynos/exynos_drm_fimc.c
>> @@ -720,24 +720,24 @@ static int fimc_src_set_addr(struct device *dev,
>> case IPP_BUF_ENQUEUE:
>> config = &property->config[EXYNOS_DRM_OPS_SRC];
>> fimc_write(ctx, buf_info->base[EXYNOS_DRM_PLANAR_Y],
>> - EXYNOS_CIIYSA(buf_id));
>> + EXYNOS_CIIYSA0);
>>
>> if (config->fmt == DRM_FORMAT_YVU420) {
>> fimc_write(ctx, buf_info->base[EXYNOS_DRM_PLANAR_CR],
>> - EXYNOS_CIICBSA(buf_id));
>> + EXYNOS_CIICBSA0);
>> fimc_write(ctx, buf_info->base[EXYNOS_DRM_PLANAR_CB],
>> - EXYNOS_CIICRSA(buf_id));
>> + EXYNOS_CIICRSA0);
>> } else {
>> fimc_write(ctx, buf_info->base[EXYNOS_DRM_PLANAR_CB],
>> - EXYNOS_CIICBSA(buf_id));
>> + EXYNOS_CIICBSA0);
>> fimc_write(ctx, buf_info->base[EXYNOS_DRM_PLANAR_CR],
>> - EXYNOS_CIICRSA(buf_id));
>> + EXYNOS_CIICRSA0);
>> }
>> break;
>> case IPP_BUF_DEQUEUE:
>> - fimc_write(ctx, 0x0, EXYNOS_CIIYSA(buf_id));
>> - fimc_write(ctx, 0x0, EXYNOS_CIICBSA(buf_id));
>> - fimc_write(ctx, 0x0, EXYNOS_CIICRSA(buf_id));
>> + fimc_write(ctx, 0x0, EXYNOS_CIIYSA0);
>> + fimc_write(ctx, 0x0, EXYNOS_CIICBSA0);
>> + fimc_write(ctx, 0x0, EXYNOS_CIICRSA0);
>> break;
>> default:
>> /* bypass */
>>
>
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