The MIPI DBI helpers access struct drm_gem_cma_object.vaddr in a
few places. Replace all instances with the correct generic GEM
functions. Use drm_gem_fb_vmap() for mapping a framebuffer's GEM
objects and drm_gem_fb_vunmap() for unmapping them. This removes
the dependency on CMA helpers within MIPI DBI.
Signed-off-by: Thomas Zimmermann <tzimmermann@xxxxxxx>
---
drivers/gpu/drm/drm_mipi_dbi.c | 34 +++++++++++++++++++++++++---------
1 file changed, 25 insertions(+), 9 deletions(-)
diff --git a/drivers/gpu/drm/drm_mipi_dbi.c b/drivers/gpu/drm/drm_mipi_dbi.c
index 71b646c4131f..f80fd6c0ccf8 100644
--- a/drivers/gpu/drm/drm_mipi_dbi.c
+++ b/drivers/gpu/drm/drm_mipi_dbi.c
@@ -15,9 +15,10 @@
#include <drm/drm_connector.h>
#include <drm/drm_damage_helper.h>
#include <drm/drm_drv.h>
-#include <drm/drm_gem_cma_helper.h>
+#include <drm/drm_file.h>
#include <drm/drm_format_helper.h>
#include <drm/drm_fourcc.h>
+#include <drm/drm_gem.h>
#include <drm/drm_gem_framebuffer_helper.h>
#include <drm/drm_mipi_dbi.h>
#include <drm/drm_modes.h>
@@ -200,13 +201,19 @@ int mipi_dbi_buf_copy(void *dst, struct drm_framebuffer *fb,
struct drm_rect *clip, bool swap)
{
struct drm_gem_object *gem = drm_gem_fb_get_obj(fb, 0);
- struct drm_gem_cma_object *cma_obj = to_drm_gem_cma_obj(gem);
- void *src = cma_obj->vaddr;
+ struct dma_buf_map map[DRM_FORMAT_MAX_PLANES];
+ struct dma_buf_map data[DRM_FORMAT_MAX_PLANES];
+ void *src;
int ret;
ret = drm_gem_fb_begin_cpu_access(fb, DMA_FROM_DEVICE);
if (ret)
return ret;
+ src = data[0].vaddr; /* TODO: Use mapping abstraction properly */
+
+ ret = drm_gem_fb_vmap(fb, map, data);
+ if (ret)
+ goto out_drm_gem_fb_end_cpu_access;
switch (fb->format->format) {
case DRM_FORMAT_RGB565:
@@ -221,9 +228,11 @@ int mipi_dbi_buf_copy(void *dst, struct drm_framebuffer *fb,
default:
drm_err_once(fb->dev, "Format is not supported: %p4cc\n",
&fb->format->format);
- return -EINVAL;
+ ret = -EINVAL;
}
+ drm_gem_fb_vunmap(fb, map);
+out_drm_gem_fb_end_cpu_access:
drm_gem_fb_end_cpu_access(fb, DMA_FROM_DEVICE);
return ret;
@@ -249,8 +258,8 @@ static void mipi_dbi_set_window_address(struct mipi_dbi_dev *dbidev,
static void mipi_dbi_fb_dirty(struct drm_framebuffer *fb, struct drm_rect *rect)
{
- struct drm_gem_object *gem = drm_gem_fb_get_obj(fb, 0);
- struct drm_gem_cma_object *cma_obj = to_drm_gem_cma_obj(gem);
+ struct dma_buf_map map[DRM_FORMAT_MAX_PLANES];
+ struct dma_buf_map data[DRM_FORMAT_MAX_PLANES];
struct mipi_dbi_dev *dbidev = drm_to_mipi_dbi_dev(fb->dev);
unsigned int height = rect->y2 - rect->y1;
unsigned int width = rect->x2 - rect->x1;
@@ -266,6 +275,10 @@ static void mipi_dbi_fb_dirty(struct drm_framebuffer *fb, struct drm_rect *rect)
if (!drm_dev_enter(fb->dev, &idx))
return;
+ ret = drm_gem_fb_vmap(fb, map, data);
+ if (ret)
+ goto err_drm_dev_exit;
+
full = width == fb->width && height == fb->height;
DRM_DEBUG_KMS("Flushing [FB:%d] " DRM_RECT_FMT "\n", fb->base.id, DRM_RECT_ARG(rect));
@@ -277,7 +290,7 @@ static void mipi_dbi_fb_dirty(struct drm_framebuffer *fb, struct drm_rect *rect)
if (ret)
goto err_msg;
} else {
- tr = cma_obj->vaddr;
+ tr = data[0].vaddr; /* TODO: Use mapping abstraction properly */
}
mipi_dbi_set_window_address(dbidev, rect->x1, rect->x2 - 1, rect->y1,
@@ -289,6 +302,9 @@ static void mipi_dbi_fb_dirty(struct drm_framebuffer *fb, struct drm_rect *rect)
if (ret)
drm_err_once(fb->dev, "Failed to update display %d\n", ret);
+ drm_gem_fb_vunmap(fb, map);
+
+err_drm_dev_exit:
drm_dev_exit(idx);
}
@@ -1117,8 +1133,8 @@ int mipi_dbi_spi_init(struct spi_device *spi, struct mipi_dbi *dbi,
/*
* Even though it's not the SPI device that does DMA (the master does),
- * the dma mask is necessary for the dma_alloc_wc() in
- * drm_gem_cma_create(). The dma_addr returned will be a physical
+ * the dma mask is necessary for the dma_alloc_wc() in the GEM code
+ * (e.g., drm_gem_cma_create()). The dma_addr returned will be a physical
* address which might be different from the bus address, but this is
* not a problem since the address will not be used.
* The virtual address is used in the transfer and the SPI core
--
2.33.1
