[media] s5p-jpeg: Adjust jpeg_bound_align_image to Exynos3250 needs

The jpeg_bound_align_image function needs to know the context
in which it is called, as it needs to align image dimensions in
a slight different manner for Exynos3250, which crops pixels for
specific values in case the format is RGB.

Signed-off-by: Jacek Anaszewski <j.anaszewski@samsung.com>
Signed-off-by: Sylwester Nawrocki <s.nawrocki@samsung.com>
Signed-off-by: Mauro Carvalho Chehab <m.chehab@samsung.com>

diff --git a/drivers/media/platform/s5p-jpeg/jpeg-core.c b/drivers/media/platform/s5p-jpeg/jpeg-core.c
index a3f8862..5ef7f5b 100644 (file)
--- a/drivers/media/platform/s5p-jpeg/jpeg-core.c
+++ b/drivers/media/platform/s5p-jpeg/jpeg-core.c
@@ -1133,7 +1133,8 @@ static struct s5p_jpeg_fmt *s5p_jpeg_find_format(struct s5p_jpeg_ctx *ctx,
        return NULL;
 }
 
-static void jpeg_bound_align_image(u32 *w, unsigned int wmin, unsigned int wmax,
+static void jpeg_bound_align_image(struct s5p_jpeg_ctx *ctx,
+                                  u32 *w, unsigned int wmin, unsigned int wmax,
                                   unsigned int walign,
                                   u32 *h, unsigned int hmin, unsigned int hmax,
                                   unsigned int halign)
@@ -1145,13 +1146,27 @@ static void jpeg_bound_align_image(u32 *w, unsigned int wmin, unsigned int wmax,
 
        w_step = 1 << walign;
        h_step = 1 << halign;
+
+       if (ctx->jpeg->variant->version == SJPEG_EXYNOS3250) {
+               /*
+                * Rightmost and bottommost pixels are cropped by the
+                * Exynos3250 JPEG IP for RGB formats, for the specific
+                * width and height values respectively. This assignment
+                * will result in v4l_bound_align_image returning dimensions
+                * reduced by 1 for the aforementioned cases.
+                */
+               if (w_step == 4 && ((width & 3) == 1)) {
+                       wmax = width;
+                       hmax = height;
+               }
+       }
+
        v4l_bound_align_image(w, wmin, wmax, walign, h, hmin, hmax, halign, 0);
 
        if (*w < width && (*w + w_step) < wmax)
                *w += w_step;
        if (*h < height && (*h + h_step) < hmax)
                *h += h_step;
-
 }
 
 static int vidioc_try_fmt(struct v4l2_format *f, struct s5p_jpeg_fmt *fmt,
@@ -1167,12 +1182,12 @@ static int vidioc_try_fmt(struct v4l2_format *f, struct s5p_jpeg_fmt *fmt,
        /* V4L2 specification suggests the driver corrects the format struct
         * if any of the dimensions is unsupported */
        if (q_type == FMT_TYPE_OUTPUT)
-               jpeg_bound_align_image(&pix->width, S5P_JPEG_MIN_WIDTH,
+               jpeg_bound_align_image(ctx, &pix->width, S5P_JPEG_MIN_WIDTH,
                                       S5P_JPEG_MAX_WIDTH, 0,
                                       &pix->height, S5P_JPEG_MIN_HEIGHT,
                                       S5P_JPEG_MAX_HEIGHT, 0);
        else
-               jpeg_bound_align_image(&pix->width, S5P_JPEG_MIN_WIDTH,
+               jpeg_bound_align_image(ctx, &pix->width, S5P_JPEG_MIN_WIDTH,
                                       S5P_JPEG_MAX_WIDTH, fmt->h_align,
                                       &pix->height, S5P_JPEG_MIN_HEIGHT,
                                       S5P_JPEG_MAX_HEIGHT, fmt->v_align);
@@ -1294,7 +1309,7 @@ static int exynos4_jpeg_get_output_buffer_size(struct s5p_jpeg_ctx *ctx,
        else
                wh_align = 1;
 
-       jpeg_bound_align_image(&w, S5P_JPEG_MIN_WIDTH,
+       jpeg_bound_align_image(ctx, &w, S5P_JPEG_MIN_WIDTH,
                               S5P_JPEG_MAX_WIDTH, wh_align,
                               &h, S5P_JPEG_MIN_HEIGHT,
                               S5P_JPEG_MAX_HEIGHT, wh_align);