drm/msm/dpu: drop dpu_format_check_modified_format

The msm_kms_funcs::check_modified_format() callback is not used by the
driver. Drop it completely.

Reviewed-by: Abhinav Kumar <quic_abhinavk@quicinc.com>
Tested-by: Abhinav Kumar <quic_abhinavk@quicinc.com> # sc7280
Signed-off-by: Dmitry Baryshkov <dmitry.baryshkov@linaro.org>
Patchwork: https://patchwork.freedesktop.org/patch/612239/
Link: https://lore.kernel.org/r/20240903-dpu-mode-config-width-v6-4-617e1ecc4b7a@linaro.org

Author: lumag

drivers/gpu/drm/msm/disp/dpu1/dpu_formats.c

@@ -423,46 +423,3 @@ int dpu_format_populate_layout(
 
 	return ret;
 }
-
-int dpu_format_check_modified_format(
-		const struct msm_kms *kms,
-		const struct msm_format *fmt,
-		const struct drm_mode_fb_cmd2 *cmd,
-		struct drm_gem_object **bos)
-{
-	const struct drm_format_info *info;
-	struct dpu_hw_fmt_layout layout;
-	uint32_t bos_total_size = 0;
-	int ret, i;
-
-	if (!fmt || !cmd || !bos) {
-		DRM_ERROR("invalid arguments\n");
-		return -EINVAL;
-	}
-
-	info = drm_format_info(fmt->pixel_format);
-	if (!info)
-		return -EINVAL;
-
-	ret = dpu_format_get_plane_sizes(fmt, cmd->width, cmd->height,
-			&layout, cmd->pitches);
-	if (ret)
-		return ret;
-
-	for (i = 0; i < info->num_planes; i++) {
-		if (!bos[i]) {
-			DRM_ERROR("invalid handle for plane %d\n", i);
-			return -EINVAL;
-		}
-		if ((i == 0) || (bos[i] != bos[0]))
-			bos_total_size += bos[i]->size;
-	}
-
-	if (bos_total_size < layout.total_size) {
-		DRM_ERROR("buffers total size too small %u expected %u\n",
-				bos_total_size, layout.total_size);
-		return -EINVAL;
-	}
-
-	return 0;
-}

drivers/gpu/drm/msm/disp/dpu1/dpu_formats.h

@@ -31,22 +31,6 @@ static inline bool dpu_find_format(u32 format, const u32 *supported_formats,
 	return false;
 }
 
-/**
- * dpu_format_check_modified_format - validate format and buffers for
- *                   dpu non-standard, i.e. modified format
- * @kms:             kms driver
- * @msm_fmt:         pointer to the msm_fmt base pointer of an msm_format
- * @cmd:             fb_cmd2 structure user request
- * @bos:             gem buffer object list
- *
- * Return: error code on failure, 0 on success
- */
-int dpu_format_check_modified_format(
-		const struct msm_kms *kms,
-		const struct msm_format *msm_fmt,
-		const struct drm_mode_fb_cmd2 *cmd,
-		struct drm_gem_object **bos);
-
 /**
  * dpu_format_populate_layout - populate the given format layout based on
  *                     mmu, fb, and format found in the fb

drivers/gpu/drm/msm/disp/dpu1/dpu_kms.c

@@ -1025,7 +1025,6 @@ static const struct msm_kms_funcs kms_funcs = {
 	.complete_commit = dpu_kms_complete_commit,
 	.enable_vblank   = dpu_kms_enable_vblank,
 	.disable_vblank  = dpu_kms_disable_vblank,
-	.check_modified_format = dpu_format_check_modified_format,
 	.destroy         = dpu_kms_destroy,
 	.snapshot        = dpu_kms_mdp_snapshot,
 #ifdef CONFIG_DEBUG_FS

drivers/gpu/drm/msm/msm_kms.h

@@ -92,12 +92,6 @@ struct msm_kms_funcs {
 	 * Format handling:
 	 */
 
-	/* do format checking on format modified through fb_cmd2 modifiers */
-	int (*check_modified_format)(const struct msm_kms *kms,
-			const struct msm_format *msm_fmt,
-			const struct drm_mode_fb_cmd2 *cmd,
-			struct drm_gem_object **bos);
-
 	/* misc: */
 	long (*round_pixclk)(struct msm_kms *kms, unsigned long rate,
 			struct drm_encoder *encoder);