> 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 <tzimmerm...@suse.de>
> Reviewed-by: Daniel Vetter <daniel.vet...@ffwll.ch>
> ---
> 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 */
This assignment should be after the _vmap() call. The MIPI DBI drivers
are currently broken because of this.
Noralf.
> +
> + 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;
>
