drm: amdgpu: Replace drm_fb_get_bpp_depth() with drm_format_plane_cpp()

The driver needs the number of bytes per pixel, not the bpp and depth
info meant for fbdev compatibility. Use the right API.
Signed-off-by: Laurent Pinchart <laurent.pinchart@ideasonboard.com>
Reviewed-by: Daniel Vetter <daniel.vetter@ffwll.ch>
Signed-off-by: Archit Taneja <architt@codeaurora.org>
Link: http://patchwork.freedesktop.org/patch/msgid/1476744081-24485-10-git-send-email-laurent.pinchart@ideasonboard.com

drivers/gpu/drm/amd/amdgpu/amdgpu_fb.c

@@ -90,12 +90,12 @@ static struct fb_ops amdgpufb_ops = {
 };
 
 
-int amdgpu_align_pitch(struct amdgpu_device *adev, int width, int bpp, bool tiled)
+int amdgpu_align_pitch(struct amdgpu_device *adev, int width, int cpp, bool tiled)
 {
 	int aligned = width;
 	int pitch_mask = 0;
 
-	switch (bpp / 8) {
+	switch (cpp) {
 	case 1:
 		pitch_mask = 255;
 		break;
@@ -110,7 +110,7 @@ int amdgpu_align_pitch(struct amdgpu_device *adev, int width, int bpp, bool tile
 
 	aligned += pitch_mask;
 	aligned &= ~pitch_mask;
-	return aligned;
+	return aligned * cpp;
 }
 
 static void amdgpufb_destroy_pinned_object(struct drm_gem_object *gobj)
@@ -139,13 +139,13 @@ static int amdgpufb_create_pinned_object(struct amdgpu_fbdev *rfbdev,
 	int ret;
 	int aligned_size, size;
 	int height = mode_cmd->height;
-	u32 bpp, depth;
+	u32 cpp;
 
-	drm_fb_get_bpp_depth(mode_cmd->pixel_format, &depth, &bpp);
+	cpp = drm_format_plane_cpp(mode_cmd->pixel_format, 0);
 
 	/* need to align pitch with crtc limits */
-	mode_cmd->pitches[0] = amdgpu_align_pitch(adev, mode_cmd->width, bpp,
-						  fb_tiled) * ((bpp + 1) / 8);
+	mode_cmd->pitches[0] = amdgpu_align_pitch(adev, mode_cmd->width, cpp,
+						  fb_tiled);
 
 	height = ALIGN(mode_cmd->height, 8);
 	size = mode_cmd->pitches[0] * height;

drivers/gpu/drm/amd/amdgpu/amdgpu_gem.c

@@ -702,7 +702,8 @@ int amdgpu_mode_dumb_create(struct drm_file *file_priv,
 	uint32_t handle;
 	int r;
 
-	args->pitch = amdgpu_align_pitch(adev, args->width, args->bpp, 0) * ((args->bpp + 1) / 8);
+	args->pitch = amdgpu_align_pitch(adev, args->width,
+					 DIV_ROUND_UP(args->bpp, 8), 0);
 	args->size = (u64)args->pitch * args->height;
 	args->size = ALIGN(args->size, PAGE_SIZE);