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path: root/drivers/gpu/ipu-v3/ipu-image-convert.c
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Diffstat (limited to 'drivers/gpu/ipu-v3/ipu-image-convert.c')
-rw-r--r--drivers/gpu/ipu-v3/ipu-image-convert.c49
1 files changed, 31 insertions, 18 deletions
diff --git a/drivers/gpu/ipu-v3/ipu-image-convert.c b/drivers/gpu/ipu-v3/ipu-image-convert.c
index a279d803ed91..a3375eec35ce 100644
--- a/drivers/gpu/ipu-v3/ipu-image-convert.c
+++ b/drivers/gpu/ipu-v3/ipu-image-convert.c
@@ -382,8 +382,11 @@ static inline int num_stripes(int dim)
/*
* Calculate downsizing coefficients, which are the same for all tiles,
- * and bilinear resizing coefficients, which are used to find the best
- * seam positions.
+ * and initial bilinear resizing coefficients, which are used to find the
+ * best seam positions.
+ * Also determine the number of tiles necessary to guarantee that no tile
+ * is larger than 1024 pixels in either dimension at the output and between
+ * IC downsizing and main processing sections.
*/
static int calc_image_resize_coefficients(struct ipu_image_convert_ctx *ctx,
struct ipu_image *in,
@@ -397,6 +400,8 @@ static int calc_image_resize_coefficients(struct ipu_image_convert_ctx *ctx,
u32 resized_height = out->rect.height;
u32 resize_coeff_h;
u32 resize_coeff_v;
+ u32 cols;
+ u32 rows;
if (ipu_rot_mode_is_irt(ctx->rot_mode)) {
resized_width = out->rect.height;
@@ -407,14 +412,12 @@ static int calc_image_resize_coefficients(struct ipu_image_convert_ctx *ctx,
if (WARN_ON(resized_width == 0 || resized_height == 0))
return -EINVAL;
- while (downsized_width > 1024 ||
- downsized_width >= resized_width * 2) {
+ while (downsized_width >= resized_width * 2) {
downsized_width >>= 1;
downsize_coeff_h++;
}
- while (downsized_height > 1024 ||
- downsized_height >= resized_height * 2) {
+ while (downsized_height >= resized_height * 2) {
downsized_height >>= 1;
downsize_coeff_v++;
}
@@ -428,10 +431,18 @@ static int calc_image_resize_coefficients(struct ipu_image_convert_ctx *ctx,
resize_coeff_h = 8192 * (downsized_width - 1) / (resized_width - 1);
resize_coeff_v = 8192 * (downsized_height - 1) / (resized_height - 1);
+ /*
+ * Both the output of the IC downsizing section before being passed to
+ * the IC main processing section and the final output of the IC main
+ * processing section must be <= 1024 pixels in both dimensions.
+ */
+ cols = num_stripes(max_t(u32, downsized_width, resized_width));
+ rows = num_stripes(max_t(u32, downsized_height, resized_height));
+
dev_dbg(ctx->chan->priv->ipu->dev,
"%s: hscale: >>%u, *8192/%u vscale: >>%u, *8192/%u, %ux%u tiles\n",
__func__, downsize_coeff_h, resize_coeff_h, downsize_coeff_v,
- resize_coeff_v, ctx->in.num_cols, ctx->in.num_rows);
+ resize_coeff_v, cols, rows);
if (downsize_coeff_h > 2 || downsize_coeff_v > 2 ||
resize_coeff_h > 0x3fff || resize_coeff_v > 0x3fff)
@@ -441,6 +452,8 @@ static int calc_image_resize_coefficients(struct ipu_image_convert_ctx *ctx,
ctx->downsize_coeff_v = downsize_coeff_v;
ctx->image_resize_coeff_h = resize_coeff_h;
ctx->image_resize_coeff_v = resize_coeff_v;
+ ctx->in.num_cols = cols;
+ ctx->in.num_rows = rows;
return 0;
}
@@ -2038,22 +2051,26 @@ ipu_image_convert_prepare(struct ipu_soc *ipu, enum ipu_ic_task ic_task,
ctx->chan = chan;
init_completion(&ctx->aborted);
+ ctx->rot_mode = rot_mode;
+
+ /* Sets ctx->in.num_rows/cols as well */
+ ret = calc_image_resize_coefficients(ctx, in, out);
+ if (ret)
+ goto out_free;
+
s_image = &ctx->in;
d_image = &ctx->out;
/* set tiling and rotation */
- d_image->num_rows = num_stripes(out->pix.height);
- d_image->num_cols = num_stripes(out->pix.width);
if (ipu_rot_mode_is_irt(rot_mode)) {
- s_image->num_rows = d_image->num_cols;
- s_image->num_cols = d_image->num_rows;
+ d_image->num_rows = s_image->num_cols;
+ d_image->num_cols = s_image->num_rows;
} else {
- s_image->num_rows = d_image->num_rows;
- s_image->num_cols = d_image->num_cols;
+ d_image->num_rows = s_image->num_rows;
+ d_image->num_cols = s_image->num_cols;
}
ctx->num_tiles = d_image->num_cols * d_image->num_rows;
- ctx->rot_mode = rot_mode;
ret = fill_image(ctx, s_image, in, IMAGE_CONVERT_IN);
if (ret)
@@ -2062,10 +2079,6 @@ ipu_image_convert_prepare(struct ipu_soc *ipu, enum ipu_ic_task ic_task,
if (ret)
goto out_free;
- ret = calc_image_resize_coefficients(ctx, in, out);
- if (ret)
- goto out_free;
-
calc_out_tile_map(ctx);
find_seams(ctx, s_image, d_image);