[PATCHv6 5/6] drm/arm/malidp: Switch to afbc helpers

[Andrzej Pietrasiewicz <andrzej.p@xxxxxxxxxxxxx>]

Use available afbc helpers.

Signed-off-by: Andrzej Pietrasiewicz <andrzej.p@xxxxxxxxxxxxx>
---
 drivers/gpu/drm/arm/malidp_drv.c | 44 +++-----------------------------
 1 file changed, 4 insertions(+), 40 deletions(-)

diff --git a/drivers/gpu/drm/arm/malidp_drv.c b/drivers/gpu/drm/arm/malidp_drv.c
index c076d0fd5b28..d50b246ce42b 100644
--- a/drivers/gpu/drm/arm/malidp_drv.c
+++ b/drivers/gpu/drm/arm/malidp_drv.c
@@ -291,12 +291,8 @@ malidp_fb_create(struct drm_device *dev, struct drm_file *file,
 		return ERR_PTR(-ENOMEM);
 	}
 
-	if (mode_cmd->modifier[0]) {
-		int n_superblocks = 0;
+	if (drm_is_afbc(mode_cmd->modifier[0])) {
 		const struct drm_format_info *info;
-		struct drm_gem_object *objs = NULL;
-		u32 afbc_superblock_size = 0, afbc_superblock_height = 0;
-		u32 afbc_superblock_width = 0, afbc_size = 0;
 		int bpp = 0;
 
 		if (malidp_format_mod_supported(dev, mode_cmd->pixel_format,
@@ -320,32 +316,9 @@ malidp_fb_create(struct drm_device *dev, struct drm_file *file,
 			goto free_fb;
 		}
 
-		switch (mode_cmd->modifier[0] & AFBC_SIZE_MASK) {
-		case AFBC_SIZE_16X16:
-			afbc_superblock_height = 16;
-			afbc_superblock_width = 16;
-			break;
-		default:
-			DRM_DEBUG_KMS("AFBC superblock size is not supported\n");
-			goto free_fb;
-		}
-
 		info = drm_get_format_info(dev, mode_cmd);
-
-		n_superblocks = (mode_cmd->width / afbc_superblock_width) *
-			(mode_cmd->height / afbc_superblock_height);
-
 		bpp = malidp_format_get_bpp(info->format);
 
-		afbc_superblock_size =
-			(bpp * afbc_superblock_width * afbc_superblock_height)
-			/ BITS_PER_BYTE;
-
-		afbc_size = ALIGN(n_superblocks * AFBC_HEADER_SIZE,
-				  AFBC_SUPERBLK_ALIGNMENT);
-		afbc_size += n_superblocks
-			* ALIGN(afbc_superblock_size, AFBC_SUPERBLK_ALIGNMENT);
-
 		if ((mode_cmd->width * bpp) !=
 			(mode_cmd->pitches[0] * BITS_PER_BYTE)) {
 			DRM_DEBUG_KMS("Invalid value of (pitch * BITS_PER_BYTE) (=%u) "
@@ -355,20 +328,11 @@ malidp_fb_create(struct drm_device *dev, struct drm_file *file,
 			goto free_fb;
 		}
 
-		objs = drm_gem_object_lookup(file, mode_cmd->handles[0]);
-		if (!objs) {
-			DRM_DEBUG_KMS("Failed to lookup GEM object\n");
-			goto free_fb;
-		}
+		/* eliminate when cpp is properly encoded in drm_format_info */
+		afbc_fb->bpp = bpp;
 
-		if (objs->size < afbc_size) {
-			DRM_DEBUG_KMS("buffer size (%zu) too small for AFBC buffer size = %u\n",
-				      objs->size, afbc_size);
-			drm_gem_object_put_unlocked(objs);
+		if (drm_gem_fb_afbc_init(dev, mode_cmd, afbc_fb))
 			goto free_fb;
-		}
-
-		drm_gem_object_put_unlocked(objs);
 	}
 
 	return ret;
-- 
2.17.1

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