On Mon, Dec 03, 2018 at 11:32:04AM +0000, Ayan Halder wrote:
> Formats like DRM_FORMAT_VUY101010, DRM_FORMAT_YUV420_8BIT and
> DRM_FORMAT_YUV420_10BIT are expressed in bits per pixel as they have a non
> integer value of cpp (thus denoted as '0' in drm_format_info[]). Therefore,
> the calculation of AFBC framebuffer size needs to use malidp_format_get_bpp().
>
> Signed-off-by: Ayan Kumar halder <ayan.halder@xxxxxxx>
Reviewed-by: Liviu Dudau <liviu.dudau@xxxxxxx>
Best regards,
Liviu
> ---
> drivers/gpu/drm/arm/malidp_drv.c | 13 ++++++++-----
> 1 file changed, 8 insertions(+), 5 deletions(-)
>
> diff --git a/drivers/gpu/drm/arm/malidp_drv.c b/drivers/gpu/drm/arm/malidp_drv.c
> index 2f0b553..b2b97db 100644
> --- a/drivers/gpu/drm/arm/malidp_drv.c
> +++ b/drivers/gpu/drm/arm/malidp_drv.c
> @@ -297,6 +297,7 @@ malidp_verify_afbc_framebuffer_size(struct drm_device *dev,
> struct drm_gem_object *objs = NULL;
> u32 afbc_superblock_size = 0, afbc_superblock_height = 0;
> u32 afbc_superblock_width = 0, afbc_size = 0;
> + int bpp = 0;
>
> switch (mode_cmd->modifier[0] & AFBC_SIZE_MASK) {
> case AFBC_SIZE_16X16:
> @@ -313,15 +314,17 @@ malidp_verify_afbc_framebuffer_size(struct drm_device *dev,
> n_superblocks = (mode_cmd->width / afbc_superblock_width) *
> (mode_cmd->height / afbc_superblock_height);
>
> - afbc_superblock_size = info->cpp[0] * afbc_superblock_width *
> - afbc_superblock_height;
> + bpp = malidp_format_get_bpp(info->format);
> +
> + afbc_superblock_size = (bpp * afbc_superblock_width * afbc_superblock_height) / BITS_PER_BYTE;
>
> afbc_size = ALIGN(n_superblocks * AFBC_HEADER_SIZE, AFBC_SUPERBLK_ALIGNMENT);
> afbc_size += n_superblocks * ALIGN(afbc_superblock_size, AFBC_SUPERBLK_ALIGNMENT);
>
> - if (mode_cmd->width * info->cpp[0] != mode_cmd->pitches[0]) {
> - DRM_DEBUG_KMS("Invalid value of pitch (=%u) should be same as width (=%u) * cpp (=%u)\n",
> - mode_cmd->pitches[0], mode_cmd->width, info->cpp[0]);
> + if ((mode_cmd->width * bpp) != (mode_cmd->pitches[0] * BITS_PER_BYTE)) {
> + DRM_DEBUG_KMS("Invalid value of (pitch * BITS_PER_BYTE) (=%u) "
> + "should be same as width (=%u) * bpp (=%u)\n",
> + (mode_cmd->pitches[0] * BITS_PER_BYTE), mode_cmd->width, bpp);
> return false;
> }
>
> --
> 2.7.4
>
--
====================
| I would like to |
| fix the world, |
| but they're not |
| giving me the |
\ source code! /
---------------
¯\_(ツ)_/¯
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