diff options
| -rw-r--r-- | drivers/gpu/drm/rcar-du/rcar_du_kms.c | 13 |
1 files changed, 11 insertions, 2 deletions
diff --git a/drivers/gpu/drm/rcar-du/rcar_du_kms.c b/drivers/gpu/drm/rcar-du/rcar_du_kms.c index a87edfa..7602610 100644 --- a/drivers/gpu/drm/rcar-du/rcar_du_kms.c +++ b/drivers/gpu/drm/rcar-du/rcar_du_kms.c @@ -135,7 +135,9 @@ rcar_du_fb_create(struct drm_device *dev, struct drm_file *file_priv, { struct rcar_du_device *rcdu = dev->dev_private; const struct rcar_du_format_info *format; + unsigned int max_pitch; unsigned int align; + unsigned int bpp; format = rcar_du_format_info(mode_cmd->pixel_format); if (format == NULL) { @@ -144,13 +146,20 @@ rcar_du_fb_create(struct drm_device *dev, struct drm_file *file_priv, return ERR_PTR(-EINVAL); } + /* + * The pitch and alignment constraints are expressed in pixels on the + * hardware side and in bytes in the DRM API. + */ + bpp = format->planes == 2 ? 1 : format->bpp / 8; + max_pitch = 4096 * bpp; + if (rcar_du_needs(rcdu, RCAR_DU_QUIRK_ALIGN_128B)) align = 128; else - align = 16 * format->bpp / 8; + align = 16 * bpp; if (mode_cmd->pitches[0] & (align - 1) || - mode_cmd->pitches[0] >= 8192) { + mode_cmd->pitches[0] >= max_pitch) { dev_dbg(dev->dev, "invalid pitch value %u\n", mode_cmd->pitches[0]); return ERR_PTR(-EINVAL); |