[PATCH 07/11] drm/exynos: Support multi buffers
Inki Dae
inki.dae at samsung.com
Wed Dec 21 01:28:21 PST 2011
From: Seung-Woo Kim <sw0312.kim at samsung.com>
These formats(NV12M, NV12MT and YUV420M) have non contiguous multi
planes, so each plane uses different buffer. The exynos drm should
support multi buffer for them.
Signed-off-by: Seung-Woo Kim <sw0312.kim at samsung.com>
Signed-off-by: Joonyoung Shim <jy0922.shim at samsung.com>
Signed-off-by: Inki Dae <inki.dae at samsung.com>
Signed-off-by: Kyungmin Park <kyungmin.park at samsung.com>
---
drivers/gpu/drm/exynos/exynos_drm_buf.h | 3 --
drivers/gpu/drm/exynos/exynos_drm_crtc.c | 30 +++++++++++--------
drivers/gpu/drm/exynos/exynos_drm_drv.h | 13 +++++---
drivers/gpu/drm/exynos/exynos_drm_fb.c | 44 +++++++++++++++++++++++-----
drivers/gpu/drm/exynos/exynos_drm_fb.h | 17 +++++++++++
drivers/gpu/drm/exynos/exynos_drm_fbdev.c | 4 +-
drivers/gpu/drm/exynos/exynos_drm_fimd.c | 4 +-
7 files changed, 82 insertions(+), 33 deletions(-)
diff --git a/drivers/gpu/drm/exynos/exynos_drm_buf.h b/drivers/gpu/drm/exynos/exynos_drm_buf.h
index 6e91f9c..c913f2b 100644
--- a/drivers/gpu/drm/exynos/exynos_drm_buf.h
+++ b/drivers/gpu/drm/exynos/exynos_drm_buf.h
@@ -30,9 +30,6 @@
struct exynos_drm_gem_buf *exynos_drm_buf_create(struct drm_device *dev,
unsigned int size);
-/* get memory information of a drm framebuffer. */
-struct exynos_drm_gem_buf *exynos_drm_fb_get_buf(struct drm_framebuffer *fb);
-
/* remove allocated physical memory. */
void exynos_drm_buf_destroy(struct drm_device *dev,
struct exynos_drm_gem_buf *buffer);
diff --git a/drivers/gpu/drm/exynos/exynos_drm_crtc.c b/drivers/gpu/drm/exynos/exynos_drm_crtc.c
index e1ce9fd..e3861ac 100644
--- a/drivers/gpu/drm/exynos/exynos_drm_crtc.c
+++ b/drivers/gpu/drm/exynos/exynos_drm_crtc.c
@@ -34,7 +34,6 @@
#include "exynos_drm_fb.h"
#include "exynos_drm_encoder.h"
#include "exynos_drm_gem.h"
-#include "exynos_drm_buf.h"
#define to_exynos_crtc(x) container_of(x, struct exynos_drm_crtc,\
drm_crtc)
@@ -80,19 +79,23 @@ int exynos_drm_overlay_update(struct exynos_drm_overlay *overlay,
struct exynos_drm_gem_buf *buffer;
unsigned int actual_w;
unsigned int actual_h;
+ int nr = exynos_drm_format_num_buffers(fb->pixel_format);
+ int i;
+
+ for (i = 0; i < nr; i++) {
+ buffer = exynos_drm_fb_buffer(fb, i);
+ if (!buffer) {
+ DRM_LOG_KMS("buffer is null\n");
+ return -EFAULT;
+ }
- buffer = exynos_drm_fb_get_buf(fb);
- if (!buffer) {
- DRM_LOG_KMS("buffer is null.\n");
- return -EFAULT;
- }
-
- overlay->dma_addr = buffer->dma_addr;
- overlay->vaddr = buffer->kvaddr;
+ overlay->dma_addr[i] = buffer->dma_addr;
+ overlay->vaddr[i] = buffer->kvaddr;
- DRM_DEBUG_KMS("vaddr = 0x%lx, dma_addr = 0x%lx\n",
- (unsigned long)overlay->vaddr,
- (unsigned long)overlay->dma_addr);
+ DRM_DEBUG_KMS("buffer: %d, vaddr = 0x%lx, dma_addr = 0x%lx\n",
+ i, (unsigned long)overlay->vaddr[i],
+ (unsigned long)overlay->dma_addr[i]);
+ }
actual_w = min((mode->hdisplay - pos->crtc_x), pos->crtc_w);
actual_h = min((mode->vdisplay - pos->crtc_y), pos->crtc_h);
@@ -104,6 +107,7 @@ int exynos_drm_overlay_update(struct exynos_drm_overlay *overlay,
overlay->fb_height = fb->height;
overlay->bpp = fb->bits_per_pixel;
overlay->pitch = fb->pitches[0];
+ overlay->pixel_format = fb->pixel_format;
/* set overlay range to be displayed. */
overlay->crtc_x = pos->crtc_x;
diff --git a/drivers/gpu/drm/exynos/exynos_drm_drv.h b/drivers/gpu/drm/exynos/exynos_drm_drv.h
index 8e8d8f0..24f4ef4 100644
--- a/drivers/gpu/drm/exynos/exynos_drm_drv.h
+++ b/drivers/gpu/drm/exynos/exynos_drm_drv.h
@@ -34,6 +34,7 @@
#define MAX_CRTC 2
#define MAX_PLANE 5
+#define MAX_FB_BUFFER 3
#define DEFAULT_ZPOS -1
struct drm_device;
@@ -82,9 +83,10 @@ struct exynos_drm_overlay_ops {
* @scan_flag: interlace or progressive way.
* (it could be DRM_MODE_FLAG_*)
* @bpp: pixel size.(in bit)
- * @dma_addr: bus(accessed by dma) address to the memory region allocated
- * for a overlay.
- * @vaddr: virtual memory addresss to this overlay.
+ * @pixel_format: fourcc pixel format of this overlay
+ * @dma_addr: array of bus(accessed by dma) address to the memory region
+ * allocated for a overlay.
+ * @vaddr: array of virtual memory addresss to this overlay.
* @zpos: order of overlay layer(z position).
* @default_win: a window to be enabled.
* @color_key: color key on or off.
@@ -112,8 +114,9 @@ struct exynos_drm_overlay {
unsigned int scan_flag;
unsigned int bpp;
unsigned int pitch;
- dma_addr_t dma_addr;
- void __iomem *vaddr;
+ uint32_t pixel_format;
+ dma_addr_t dma_addr[MAX_FB_BUFFER];
+ void __iomem *vaddr[MAX_FB_BUFFER];
int zpos;
bool default_win;
diff --git a/drivers/gpu/drm/exynos/exynos_drm_fb.c b/drivers/gpu/drm/exynos/exynos_drm_fb.c
index 8f36ae5..3733fe6 100644
--- a/drivers/gpu/drm/exynos/exynos_drm_fb.c
+++ b/drivers/gpu/drm/exynos/exynos_drm_fb.c
@@ -33,7 +33,6 @@
#include "exynos_drm_drv.h"
#include "exynos_drm_fb.h"
-#include "exynos_drm_buf.h"
#include "exynos_drm_gem.h"
#define to_exynos_fb(x) container_of(x, struct exynos_drm_fb, fb)
@@ -42,11 +41,11 @@
* exynos specific framebuffer structure.
*
* @fb: drm framebuffer obejct.
- * @exynos_gem_obj: exynos specific gem object containing a gem object.
+ * @exynos_gem_obj: array of exynos specific gem object containing a gem object.
*/
struct exynos_drm_fb {
struct drm_framebuffer fb;
- struct exynos_drm_gem_obj *exynos_gem_obj;
+ struct exynos_drm_gem_obj *exynos_gem_obj[MAX_FB_BUFFER];
};
static void exynos_drm_fb_destroy(struct drm_framebuffer *fb)
@@ -70,7 +69,7 @@ static int exynos_drm_fb_create_handle(struct drm_framebuffer *fb,
DRM_DEBUG_KMS("%s\n", __FILE__);
return drm_gem_handle_create(file_priv,
- &exynos_fb->exynos_gem_obj->base, handle);
+ &exynos_fb->exynos_gem_obj[0]->base, handle);
}
static int exynos_drm_fb_dirty(struct drm_framebuffer *fb,
@@ -112,7 +111,7 @@ exynos_drm_framebuffer_init(struct drm_device *dev,
}
drm_helper_mode_fill_fb_struct(&exynos_fb->fb, mode_cmd);
- exynos_fb->exynos_gem_obj = to_exynos_gem_obj(obj);
+ exynos_fb->exynos_gem_obj[0] = to_exynos_gem_obj(obj);
return &exynos_fb->fb;
}
@@ -122,6 +121,10 @@ exynos_user_fb_create(struct drm_device *dev, struct drm_file *file_priv,
struct drm_mode_fb_cmd2 *mode_cmd)
{
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__);
@@ -133,17 +136,42 @@ exynos_user_fb_create(struct drm_device *dev, struct drm_file *file_priv,
drm_gem_object_unreference_unlocked(obj);
- return exynos_drm_framebuffer_init(dev, mode_cmd, obj);
+ fb = exynos_drm_framebuffer_init(dev, mode_cmd, obj);
+ if (IS_ERR(fb))
+ return fb;
+
+ exynos_fb = to_exynos_fb(fb);
+ nr = exynos_drm_format_num_buffers(fb->pixel_format);
+
+ for (i = 1; i < nr; i++) {
+ obj = drm_gem_object_lookup(dev, file_priv,
+ mode_cmd->handles[i]);
+ if (!obj) {
+ DRM_ERROR("failed to lookup gem object\n");
+ exynos_drm_fb_destroy(fb);
+ return ERR_PTR(-ENOENT);
+ }
+
+ drm_gem_object_unreference_unlocked(obj);
+
+ exynos_fb->exynos_gem_obj[i] = to_exynos_gem_obj(obj);
+ }
+
+ return fb;
}
-struct exynos_drm_gem_buf *exynos_drm_fb_get_buf(struct drm_framebuffer *fb)
+struct exynos_drm_gem_buf *exynos_drm_fb_buffer(struct drm_framebuffer *fb,
+ int index)
{
struct exynos_drm_fb *exynos_fb = to_exynos_fb(fb);
struct exynos_drm_gem_buf *buffer;
DRM_DEBUG_KMS("%s\n", __FILE__);
- buffer = exynos_fb->exynos_gem_obj->buffer;
+ if (index >= MAX_FB_BUFFER)
+ return NULL;
+
+ buffer = exynos_fb->exynos_gem_obj[index]->buffer;
if (!buffer)
return NULL;
diff --git a/drivers/gpu/drm/exynos/exynos_drm_fb.h b/drivers/gpu/drm/exynos/exynos_drm_fb.h
index 8b3e12f..3ecb30d 100644
--- a/drivers/gpu/drm/exynos/exynos_drm_fb.h
+++ b/drivers/gpu/drm/exynos/exynos_drm_fb.h
@@ -28,11 +28,28 @@
#ifndef _EXYNOS_DRM_FB_H_
#define _EXYNOS_DRM_FB_H
+static inline int exynos_drm_format_num_buffers(uint32_t format)
+{
+ switch (format) {
+ case DRM_FORMAT_NV12M:
+ case DRM_FORMAT_NV12MT:
+ return 2;
+ case DRM_FORMAT_YUV420M:
+ return 3;
+ default:
+ return 1;
+ }
+}
+
struct drm_framebuffer *
exynos_drm_framebuffer_init(struct drm_device *dev,
struct drm_mode_fb_cmd2 *mode_cmd,
struct drm_gem_object *obj);
+/* get memory information of a drm framebuffer */
+struct exynos_drm_gem_buf *exynos_drm_fb_buffer(struct drm_framebuffer *fb,
+ int index);
+
void exynos_drm_mode_config_init(struct drm_device *dev);
#endif
diff --git a/drivers/gpu/drm/exynos/exynos_drm_fbdev.c b/drivers/gpu/drm/exynos/exynos_drm_fbdev.c
index 26992d3..d7ae29d 100644
--- a/drivers/gpu/drm/exynos/exynos_drm_fbdev.c
+++ b/drivers/gpu/drm/exynos/exynos_drm_fbdev.c
@@ -34,7 +34,6 @@
#include "exynos_drm_drv.h"
#include "exynos_drm_fb.h"
#include "exynos_drm_gem.h"
-#include "exynos_drm_buf.h"
#define MAX_CONNECTOR 4
#define PREFERRED_BPP 32
@@ -99,7 +98,8 @@ static int exynos_drm_fbdev_update(struct drm_fb_helper *helper,
drm_fb_helper_fill_fix(fbi, fb->pitches[0], fb->depth);
drm_fb_helper_fill_var(fbi, helper, fb->width, fb->height);
- buffer = exynos_drm_fb_get_buf(fb);
+ /* RGB formats use only one buffer */
+ buffer = exynos_drm_fb_buffer(fb, 0);
if (!buffer) {
DRM_LOG_KMS("buffer is null.\n");
return -EFAULT;
diff --git a/drivers/gpu/drm/exynos/exynos_drm_fimd.c b/drivers/gpu/drm/exynos/exynos_drm_fimd.c
index 95c6210..777b93c 100644
--- a/drivers/gpu/drm/exynos/exynos_drm_fimd.c
+++ b/drivers/gpu/drm/exynos/exynos_drm_fimd.c
@@ -313,8 +313,8 @@ static void fimd_win_mode_set(struct device *dev,
win_data->ovl_height = overlay->crtc_height;
win_data->fb_width = overlay->fb_width;
win_data->fb_height = overlay->fb_height;
- win_data->dma_addr = overlay->dma_addr + offset;
- win_data->vaddr = overlay->vaddr + offset;
+ win_data->dma_addr = overlay->dma_addr[0] + offset;
+ win_data->vaddr = overlay->vaddr[0] + offset;
win_data->bpp = overlay->bpp;
win_data->buf_offsize = (overlay->fb_width - overlay->crtc_width) *
(overlay->bpp >> 3);
--
1.7.4.1
More information about the dri-devel
mailing list