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authorInki Dae <inki.dae@samsung.com>2012-08-20 20:05:56 +0900
committerInki Dae <inki.dae@samsung.com>2012-10-04 10:06:00 +0900
commit01ed812671c1163b35bf6ce9be221bd371bf9a8f (patch)
treef79d48db7a6ae3cda29beedb9a827e7ea45ba87f /drivers/gpu/drm/exynos/exynos_drm_fb.c
parent3d05859fd78bbc0b04cca929aea494f5e6b8235b (diff)
drm/exynos: check NV12M format specific to Exynos properly
this patch adds buf_cnt variable in exynos_drm_fb structure and that means a buffer count to drm framebuffer and also adds two functions to get/set the buffer count from/to exynos_drm_fb structure. if pixel format is not DRM_FORMAT_NV12MT then it gets a buffer count to drm framebuffer refering to mode_cmd->handles and offsets. but when booted, the buffer count will always be 1 because pixel format of console framebuffer is RGB format. Signed-off-by: Inki Dae <inki.dae@samsung.com> Signed-off-by: Kyungmin Park <kyungmin.park@samsung.com>
Diffstat (limited to 'drivers/gpu/drm/exynos/exynos_drm_fb.c')
-rw-r--r--drivers/gpu/drm/exynos/exynos_drm_fb.c65
1 files changed, 62 insertions, 3 deletions
diff --git a/drivers/gpu/drm/exynos/exynos_drm_fb.c b/drivers/gpu/drm/exynos/exynos_drm_fb.c
index 4ccfe4328fab..98f8b839673a 100644
--- a/drivers/gpu/drm/exynos/exynos_drm_fb.c
+++ b/drivers/gpu/drm/exynos/exynos_drm_fb.c
@@ -41,10 +41,12 @@
* exynos specific framebuffer structure.
*
* @fb: drm framebuffer obejct.
+ * @buf_cnt: a buffer count to drm framebuffer.
* @exynos_gem_obj: array of exynos specific gem object containing a gem object.
*/
struct exynos_drm_fb {
struct drm_framebuffer fb;
+ unsigned int buf_cnt;
struct exynos_drm_gem_obj *exynos_gem_obj[MAX_FB_BUFFER];
};
@@ -101,6 +103,25 @@ static struct drm_framebuffer_funcs exynos_drm_fb_funcs = {
.dirty = exynos_drm_fb_dirty,
};
+void exynos_drm_fb_set_buf_cnt(struct drm_framebuffer *fb,
+ unsigned int cnt)
+{
+ struct exynos_drm_fb *exynos_fb;
+
+ exynos_fb = to_exynos_fb(fb);
+
+ exynos_fb->buf_cnt = cnt;
+}
+
+unsigned int exynos_drm_fb_get_buf_cnt(struct drm_framebuffer *fb)
+{
+ struct exynos_drm_fb *exynos_fb;
+
+ exynos_fb = to_exynos_fb(fb);
+
+ return exynos_fb->buf_cnt;
+}
+
struct drm_framebuffer *
exynos_drm_framebuffer_init(struct drm_device *dev,
struct drm_mode_fb_cmd2 *mode_cmd,
@@ -127,6 +148,43 @@ exynos_drm_framebuffer_init(struct drm_device *dev,
return &exynos_fb->fb;
}
+static u32 exynos_drm_format_num_buffers(struct drm_mode_fb_cmd2 *mode_cmd)
+{
+ unsigned int cnt = 0;
+
+ if (mode_cmd->pixel_format != DRM_FORMAT_NV12)
+ return drm_format_num_planes(mode_cmd->pixel_format);
+
+ while (cnt != MAX_FB_BUFFER) {
+ if (!mode_cmd->handles[cnt])
+ break;
+ cnt++;
+ }
+
+ /*
+ * check if NV12 or NV12M.
+ *
+ * NV12
+ * handles[0] = base1, offsets[0] = 0
+ * handles[1] = base1, offsets[1] = Y_size
+ *
+ * NV12M
+ * handles[0] = base1, offsets[0] = 0
+ * handles[1] = base2, offsets[1] = 0
+ */
+ if (cnt == 2) {
+ /*
+ * in case of NV12 format, offsets[1] is not 0 and
+ * handles[0] is same as handles[1].
+ */
+ if (mode_cmd->offsets[1] &&
+ mode_cmd->handles[0] == mode_cmd->handles[1])
+ cnt = 1;
+ }
+
+ return cnt;
+}
+
static struct drm_framebuffer *
exynos_user_fb_create(struct drm_device *dev, struct drm_file *file_priv,
struct drm_mode_fb_cmd2 *mode_cmd)
@@ -134,7 +192,6 @@ exynos_user_fb_create(struct drm_device *dev, struct drm_file *file_priv,
struct drm_gem_object *obj;
struct drm_framebuffer *fb;
struct exynos_drm_fb *exynos_fb;
- int nr;
int i;
DRM_DEBUG_KMS("%s\n", __FILE__);
@@ -152,9 +209,11 @@ exynos_user_fb_create(struct drm_device *dev, struct drm_file *file_priv,
}
exynos_fb = to_exynos_fb(fb);
- nr = exynos_drm_format_num_buffers(fb->pixel_format);
+ exynos_fb->buf_cnt = exynos_drm_format_num_buffers(mode_cmd);
+
+ DRM_DEBUG_KMS("buf_cnt = %d\n", exynos_fb->buf_cnt);
- for (i = 1; i < nr; i++) {
+ for (i = 1; i < exynos_fb->buf_cnt; i++) {
obj = drm_gem_object_lookup(dev, file_priv,
mode_cmd->handles[i]);
if (!obj) {