diff options
| author | Jacek Anaszewski <j.anaszewski@samsung.com> | 2014-04-10 04:32:16 -0300 |
|---|---|---|
| committer | Mauro Carvalho Chehab <m.chehab@samsung.com> | 2014-05-13 20:20:25 -0300 |
| commit | b2254d6fdd6c72222fbc57b3c201836a30b1fb62 (patch) | |
| tree | 5db5a02647f46fa79a934410c73e072601bef3a1 /drivers/media/platform/s5p-jpeg | |
| parent | 38a6ef3374087505a9b0a1abde4fd96798767d1e (diff) | |
[media] s5p-jpeg: Fix sysmmu page fault
This patch fixes jpeg sysmmu page fault on Exynos4x12 SoCs.
During encoding Exynos4x12 SoCs access wider memory area
than it results from Image_x and Image_y values written to
the JPEG_IMAGE_SIZE register. In order to avoid sysmmu page
fault apply proper output buffer size alignment.
Signed-off-by: Jacek Anaszewski <j.anaszewski@samsung.com>
Signed-off-by: Kyungmin Park <kyungmin.park@samsung.com>
Signed-off-by: Sylwester Nawrocki <s.nawrocki@samsung.com>
Signed-off-by: Mauro Carvalho Chehab <m.chehab@samsung.com>
Diffstat (limited to 'drivers/media/platform/s5p-jpeg')
| -rw-r--r-- | drivers/media/platform/s5p-jpeg/jpeg-core.c | 46 |
1 files changed, 43 insertions, 3 deletions
diff --git a/drivers/media/platform/s5p-jpeg/jpeg-core.c b/drivers/media/platform/s5p-jpeg/jpeg-core.c index ff678f9dfc49..ee561fad48b8 100644 --- a/drivers/media/platform/s5p-jpeg/jpeg-core.c +++ b/drivers/media/platform/s5p-jpeg/jpeg-core.c @@ -1106,6 +1106,32 @@ static int s5p_jpeg_try_fmt_vid_out(struct file *file, void *priv, return vidioc_try_fmt(f, fmt, ctx, FMT_TYPE_OUTPUT); } +static int exynos4_jpeg_get_output_buffer_size(struct s5p_jpeg_ctx *ctx, + struct v4l2_format *f, + int fmt_depth) +{ + struct v4l2_pix_format *pix = &f->fmt.pix; + u32 pix_fmt = f->fmt.pix.pixelformat; + int w = pix->width, h = pix->height, wh_align; + + if (pix_fmt == V4L2_PIX_FMT_RGB32 || + pix_fmt == V4L2_PIX_FMT_NV24 || + pix_fmt == V4L2_PIX_FMT_NV42 || + pix_fmt == V4L2_PIX_FMT_NV12 || + pix_fmt == V4L2_PIX_FMT_NV21 || + pix_fmt == V4L2_PIX_FMT_YUV420) + wh_align = 4; + else + wh_align = 1; + + jpeg_bound_align_image(&w, S5P_JPEG_MIN_WIDTH, + S5P_JPEG_MAX_WIDTH, wh_align, + &h, S5P_JPEG_MIN_HEIGHT, + S5P_JPEG_MAX_HEIGHT, wh_align); + + return w * h * fmt_depth >> 3; +} + static int s5p_jpeg_s_fmt(struct s5p_jpeg_ctx *ct, struct v4l2_format *f) { struct vb2_queue *vq; @@ -1132,10 +1158,24 @@ static int s5p_jpeg_s_fmt(struct s5p_jpeg_ctx *ct, struct v4l2_format *f) q_data->fmt = s5p_jpeg_find_format(ct, pix->pixelformat, f_type); q_data->w = pix->width; q_data->h = pix->height; - if (q_data->fmt->fourcc != V4L2_PIX_FMT_JPEG) - q_data->size = q_data->w * q_data->h * q_data->fmt->depth >> 3; - else + if (q_data->fmt->fourcc != V4L2_PIX_FMT_JPEG) { + /* + * During encoding Exynos4x12 SoCs access wider memory area + * than it results from Image_x and Image_y values written to + * the JPEG_IMAGE_SIZE register. In order to avoid sysmmu + * page fault calculate proper buffer size in such a case. + */ + if (ct->jpeg->variant->version == SJPEG_EXYNOS4 && + f_type == FMT_TYPE_OUTPUT && ct->mode == S5P_JPEG_ENCODE) + q_data->size = exynos4_jpeg_get_output_buffer_size(ct, + f, + q_data->fmt->depth); + else + q_data->size = q_data->w * q_data->h * + q_data->fmt->depth >> 3; + } else { q_data->size = pix->sizeimage; + } if (f_type == FMT_TYPE_OUTPUT) { ctrl_subs = v4l2_ctrl_find(&ct->ctrl_handler, |