Check if format is supported and size is within limits.
v2: simplified the code as per code review
Signed-off-by: Anitha Chrisanthus <anitha.chrisanthus@xxxxxxxxx>
Reviewed-by: Bob Paauwe <bob.j.paauwe@xxxxxxxxx>
---
drivers/gpu/drm/kmb/kmb_plane.c | 111 +++++++++++++++++++++++-----------------
1 file changed, 65 insertions(+), 46 deletions(-)
diff --git a/drivers/gpu/drm/kmb/kmb_plane.c b/drivers/gpu/drm/kmb/kmb_plane.c
index 877314a..74a3573 100644
--- a/drivers/gpu/drm/kmb/kmb_plane.c
+++ b/drivers/gpu/drm/kmb/kmb_plane.c
@@ -21,15 +21,66 @@
#include "kmb_plane.h"
#include "kmb_regs.h"
+/* graphics layer ( layers 2 & 3) formats, only packed formats are supported*/
+static const u32 kmb_formats_g[] = {
+ DRM_FORMAT_RGB332,
+ DRM_FORMAT_XRGB4444, DRM_FORMAT_XBGR4444,
+ DRM_FORMAT_ARGB4444, DRM_FORMAT_ABGR4444,
+ DRM_FORMAT_XRGB1555, DRM_FORMAT_XBGR1555,
+ DRM_FORMAT_ARGB1555, DRM_FORMAT_ABGR1555,
+ DRM_FORMAT_RGB565, DRM_FORMAT_BGR565,
+ DRM_FORMAT_RGB888, DRM_FORMAT_BGR888,
+ DRM_FORMAT_XRGB8888, DRM_FORMAT_XBGR8888,
+ DRM_FORMAT_ARGB8888, DRM_FORMAT_ABGR8888,
+};
+
+#define MAX_FORMAT_G (ARRAY_SIZE(kmb_formats_g))
+#define MAX_FORMAT_V (ARRAY_SIZE(kmb_formats_v))
+
+/* video layer ( 0 & 1) formats, packed and planar formats are supported */
+static const u32 kmb_formats_v[] = {
+ /* packed formats */
+ DRM_FORMAT_RGB332,
+ DRM_FORMAT_XRGB4444, DRM_FORMAT_XBGR4444,
+ DRM_FORMAT_ARGB4444, DRM_FORMAT_ABGR4444,
+ DRM_FORMAT_XRGB1555, DRM_FORMAT_XBGR1555,
+ DRM_FORMAT_ARGB1555, DRM_FORMAT_ABGR1555,
+ DRM_FORMAT_RGB565, DRM_FORMAT_BGR565,
+ DRM_FORMAT_RGB888, DRM_FORMAT_BGR888,
+ DRM_FORMAT_XRGB8888, DRM_FORMAT_XBGR8888,
+ DRM_FORMAT_ARGB8888, DRM_FORMAT_ABGR8888,
+ /*planar formats */
+ DRM_FORMAT_YUV420, DRM_FORMAT_YVU420,
+ DRM_FORMAT_YUV422, DRM_FORMAT_YVU422,
+ DRM_FORMAT_YUV444, DRM_FORMAT_YVU444,
+ DRM_FORMAT_NV12, DRM_FORMAT_NV21,
+};
+
+static unsigned int check_pixel_format(struct drm_plane *plane, u32 format)
+{
+ int i;
+
+ for (i = 0; i < plane->format_count; i++) {
+ if (plane->format_types[i] == format)
+ return 0;
+ }
+ return -EINVAL;
+}
+
static int kmb_plane_atomic_check(struct drm_plane *plane,
struct drm_plane_state *state)
{
-/* TBD below structure will be used for implementation later
- * struct drm_crtc_state *crtc_state;
- */
- /* TBD */
- /* Plane based checking */
+ struct drm_framebuffer *fb;
+ int ret;
+
+ fb = state->fb;
+ ret = check_pixel_format(plane, fb->format->format);
+ if (ret)
+ return ret;
+
+ if (state->crtc_w > KMB_MAX_WIDTH || state->crtc_h > KMB_MAX_HEIGHT)
+ return -EINVAL;
return 0;
}
@@ -38,36 +89,36 @@ unsigned int set_pixel_format(u32 format)
unsigned int val = 0;
switch (format) {
- /*planar formats */
+ /*planar formats */
case DRM_FORMAT_YUV444:
val = LCD_LAYER_FORMAT_YCBCR444PLAN | LCD_LAYER_PLANAR_STORAGE;
break;
case DRM_FORMAT_YVU444:
val = LCD_LAYER_FORMAT_YCBCR444PLAN | LCD_LAYER_PLANAR_STORAGE
- | LCD_LAYER_CRCB_ORDER;
+ | LCD_LAYER_CRCB_ORDER;
break;
case DRM_FORMAT_YUV422:
val = LCD_LAYER_FORMAT_YCBCR422PLAN | LCD_LAYER_PLANAR_STORAGE;
break;
case DRM_FORMAT_YVU422:
val = LCD_LAYER_FORMAT_YCBCR422PLAN | LCD_LAYER_PLANAR_STORAGE
- | LCD_LAYER_CRCB_ORDER;
+ | LCD_LAYER_CRCB_ORDER;
break;
case DRM_FORMAT_YUV420:
val = LCD_LAYER_FORMAT_YCBCR420PLAN | LCD_LAYER_PLANAR_STORAGE;
break;
case DRM_FORMAT_YVU420:
val = LCD_LAYER_FORMAT_YCBCR420PLAN | LCD_LAYER_PLANAR_STORAGE
- | LCD_LAYER_CRCB_ORDER;
+ | LCD_LAYER_CRCB_ORDER;
break;
case DRM_FORMAT_NV12:
val = LCD_LAYER_FORMAT_NV12 | LCD_LAYER_PLANAR_STORAGE;
break;
case DRM_FORMAT_NV21:
val = LCD_LAYER_FORMAT_NV12 | LCD_LAYER_PLANAR_STORAGE
- | LCD_LAYER_CRCB_ORDER;
+ | LCD_LAYER_CRCB_ORDER;
break;
- /* packed formats */
+ /* packed formats */
case DRM_FORMAT_RGB332:
val = LCD_LAYER_FORMAT_RGB332;
break;
@@ -127,7 +178,7 @@ unsigned int set_bits_per_pixel(const struct drm_format_info *format)
unsigned int val = 0;
for (i = 0; i < format->num_planes; i++)
- bpp += 8*format->cpp[i];
+ bpp += 8 * format->cpp[i];
switch (bpp) {
case 8:
@@ -171,8 +222,8 @@ static void kmb_plane_atomic_update(struct drm_plane *plane,
crtc_x = plane->state->crtc_x;
crtc_y = plane->state->crtc_y;
- kmb_write(lcd, LCD_LAYERn_WIDTH(plane_id), src_w-1);
- kmb_write(lcd, LCD_LAYERn_HEIGHT(plane_id), src_h-1);
+ kmb_write(lcd, LCD_LAYERn_WIDTH(plane_id), src_w - 1);
+ kmb_write(lcd, LCD_LAYERn_HEIGHT(plane_id), src_h - 1);
kmb_write(lcd, LCD_LAYERn_COL_START(plane_id), crtc_x);
kmb_write(lcd, LCD_LAYERn_ROW_START(plane_id), crtc_y);
@@ -295,38 +346,6 @@ static const struct drm_plane_funcs kmb_plane_funcs = {
.atomic_destroy_state = kmb_destroy_plane_state,
};
-/* graphics layer ( layers 2 & 3) formats, only packed formats are supported*/
-static const u32 kmb_formats_g[] = {
- DRM_FORMAT_RGB332,
- DRM_FORMAT_XRGB4444, DRM_FORMAT_XBGR4444,
- DRM_FORMAT_ARGB4444, DRM_FORMAT_ABGR4444,
- DRM_FORMAT_XRGB1555, DRM_FORMAT_XBGR1555,
- DRM_FORMAT_ARGB1555, DRM_FORMAT_ABGR1555,
- DRM_FORMAT_RGB565, DRM_FORMAT_BGR565,
- DRM_FORMAT_RGB888, DRM_FORMAT_BGR888,
- DRM_FORMAT_XRGB8888, DRM_FORMAT_XBGR8888,
- DRM_FORMAT_ARGB8888, DRM_FORMAT_ABGR8888,
-};
-
-/* video layer (0 & 1) formats, packed and planar formats are supported */
-static const u32 kmb_formats_v[] = {
- /* packed formats */
- DRM_FORMAT_RGB332,
- DRM_FORMAT_XRGB4444, DRM_FORMAT_XBGR4444,
- DRM_FORMAT_ARGB4444, DRM_FORMAT_ABGR4444,
- DRM_FORMAT_XRGB1555, DRM_FORMAT_XBGR1555,
- DRM_FORMAT_ARGB1555, DRM_FORMAT_ABGR1555,
- DRM_FORMAT_RGB565, DRM_FORMAT_BGR565,
- DRM_FORMAT_RGB888, DRM_FORMAT_BGR888,
- DRM_FORMAT_XRGB8888, DRM_FORMAT_XBGR8888,
- DRM_FORMAT_ARGB8888, DRM_FORMAT_ABGR8888,
- /*planar formats */
- DRM_FORMAT_YUV420, DRM_FORMAT_YVU420,
- DRM_FORMAT_YUV422, DRM_FORMAT_YVU422,
- DRM_FORMAT_YUV444, DRM_FORMAT_YVU444,
- DRM_FORMAT_NV12, DRM_FORMAT_NV21,
-};
-
struct kmb_plane *kmb_plane_init(struct drm_device *drm)
{
struct kmb_drm_private *lcd = to_kmb(drm);
--
2.7.4
_______________________________________________
dri-devel mailing list
dri-devel@xxxxxxxxxxxxxxxxxxxxx
https://lists.freedesktop.org/mailman/listinfo/dri-devel
