diff options
| -rw-r--r-- | drivers/media/platform/s5p-jpeg/jpeg-core.c | 29 |
1 files changed, 23 insertions, 6 deletions
diff --git a/drivers/media/platform/s5p-jpeg/jpeg-core.c b/drivers/media/platform/s5p-jpeg/jpeg-core.c index 6d90195f70d..6accecdb822 100644 --- a/drivers/media/platform/s5p-jpeg/jpeg-core.c +++ b/drivers/media/platform/s5p-jpeg/jpeg-core.c @@ -451,6 +451,13 @@ static int s5p_jpeg_adjust_fourcc_to_subsampling( return 0; } +static int exynos4x12_decoded_subsampling[] = { + V4L2_JPEG_CHROMA_SUBSAMPLING_GRAY, + V4L2_JPEG_CHROMA_SUBSAMPLING_444, + V4L2_JPEG_CHROMA_SUBSAMPLING_422, + V4L2_JPEG_CHROMA_SUBSAMPLING_420, +}; + static inline struct s5p_jpeg_ctx *ctrl_to_ctx(struct v4l2_ctrl *c) { return container_of(c->handler, struct s5p_jpeg_ctx, ctrl_handler); @@ -461,6 +468,21 @@ static inline struct s5p_jpeg_ctx *fh_to_ctx(struct v4l2_fh *fh) return container_of(fh, struct s5p_jpeg_ctx, fh); } +static int s5p_jpeg_to_user_subsampling(struct s5p_jpeg_ctx *ctx) +{ + WARN_ON(ctx->subsampling > 3); + + if (ctx->jpeg->variant->version == SJPEG_S5P) { + if (ctx->subsampling > 2) + return V4L2_JPEG_CHROMA_SUBSAMPLING_GRAY; + return ctx->subsampling; + } else { + if (ctx->subsampling > 2) + return V4L2_JPEG_CHROMA_SUBSAMPLING_420; + return exynos4x12_decoded_subsampling[ctx->subsampling]; + } +} + static inline void s5p_jpeg_set_qtbl(void __iomem *regs, const unsigned char *qtbl, unsigned long tab, int len) @@ -1200,12 +1222,7 @@ static int s5p_jpeg_g_volatile_ctrl(struct v4l2_ctrl *ctrl) switch (ctrl->id) { case V4L2_CID_JPEG_CHROMA_SUBSAMPLING: spin_lock_irqsave(&jpeg->slock, flags); - - WARN_ON(ctx->subsampling > S5P_SUBSAMPLING_MODE_GRAY); - if (ctx->subsampling > 2) - ctrl->val = V4L2_JPEG_CHROMA_SUBSAMPLING_GRAY; - else - ctrl->val = ctx->subsampling; + ctrl->val = s5p_jpeg_to_user_subsampling(ctx); spin_unlock_irqrestore(&jpeg->slock, flags); break; } |