drm: Switch to %p4cc format modifier

Switch DRM drivers from drm_get_format_name() to %p4cc. This gets rid of a
large number of temporary variables at the same time.

Signed-off-by: Sakari Ailus <sakari.ailus@linux.intel.com>
Reviewed-by: Petr Mladek <pmladek@suse.com>
Reviewed-by: Andy Shevchenko <andriy.shevchenko@linux.intel.com>
Acked-by: Thomas Zimmermann <tzimmermann@suse.de>
Signed-off-by: Thomas Zimmermann <tzimmermann@suse.de>
Link: https://patchwork.freedesktop.org/patch/msgid/20210216155723.17109-4-sakari.ailus@linux.intel.com
diff --git a/drivers/gpu/drm/amd/amdgpu/dce_v10_0.c b/drivers/gpu/drm/amd/amdgpu/dce_v10_0.c
index 7944781..ea825b4 100644
--- a/drivers/gpu/drm/amd/amdgpu/dce_v10_0.c
+++ b/drivers/gpu/drm/amd/amdgpu/dce_v10_0.c
@@ -1862,7 +1862,6 @@ static int dce_v10_0_crtc_do_set_base(struct drm_crtc *crtc,
 	u32 tmp, viewport_w, viewport_h;
 	int r;
 	bool bypass_lut = false;
-	struct drm_format_name_buf format_name;
 
 	/* no fb bound */
 	if (!atomic && !crtc->primary->fb) {
@@ -1981,8 +1980,8 @@ static int dce_v10_0_crtc_do_set_base(struct drm_crtc *crtc,
 #endif
 		break;
 	default:
-		DRM_ERROR("Unsupported screen format %s\n",
-		          drm_get_format_name(target_fb->format->format, &format_name));
+		DRM_ERROR("Unsupported screen format %p4cc\n",
+			  &target_fb->format->format);
 		return -EINVAL;
 	}
 
diff --git a/drivers/gpu/drm/amd/amdgpu/dce_v11_0.c b/drivers/gpu/drm/amd/amdgpu/dce_v11_0.c
index 1b6ff04..a360a6d 100644
--- a/drivers/gpu/drm/amd/amdgpu/dce_v11_0.c
+++ b/drivers/gpu/drm/amd/amdgpu/dce_v11_0.c
@@ -1904,7 +1904,6 @@ static int dce_v11_0_crtc_do_set_base(struct drm_crtc *crtc,
 	u32 tmp, viewport_w, viewport_h;
 	int r;
 	bool bypass_lut = false;
-	struct drm_format_name_buf format_name;
 
 	/* no fb bound */
 	if (!atomic && !crtc->primary->fb) {
@@ -2023,8 +2022,8 @@ static int dce_v11_0_crtc_do_set_base(struct drm_crtc *crtc,
 #endif
 		break;
 	default:
-		DRM_ERROR("Unsupported screen format %s\n",
-		          drm_get_format_name(target_fb->format->format, &format_name));
+		DRM_ERROR("Unsupported screen format %p4cc\n",
+			  &target_fb->format->format);
 		return -EINVAL;
 	}
 
diff --git a/drivers/gpu/drm/amd/amdgpu/dce_v6_0.c b/drivers/gpu/drm/amd/amdgpu/dce_v6_0.c
index 83a8838..ef124ac 100644
--- a/drivers/gpu/drm/amd/amdgpu/dce_v6_0.c
+++ b/drivers/gpu/drm/amd/amdgpu/dce_v6_0.c
@@ -1820,7 +1820,6 @@ static int dce_v6_0_crtc_do_set_base(struct drm_crtc *crtc,
 	u32 viewport_w, viewport_h;
 	int r;
 	bool bypass_lut = false;
-	struct drm_format_name_buf format_name;
 
 	/* no fb bound */
 	if (!atomic && !crtc->primary->fb) {
@@ -1929,8 +1928,8 @@ static int dce_v6_0_crtc_do_set_base(struct drm_crtc *crtc,
 #endif
 		break;
 	default:
-		DRM_ERROR("Unsupported screen format %s\n",
-		          drm_get_format_name(target_fb->format->format, &format_name));
+		DRM_ERROR("Unsupported screen format %p4cc\n",
+			  &target_fb->format->format);
 		return -EINVAL;
 	}
 
diff --git a/drivers/gpu/drm/amd/amdgpu/dce_v8_0.c b/drivers/gpu/drm/amd/amdgpu/dce_v8_0.c
index 224b302..c986501 100644
--- a/drivers/gpu/drm/amd/amdgpu/dce_v8_0.c
+++ b/drivers/gpu/drm/amd/amdgpu/dce_v8_0.c
@@ -1791,7 +1791,6 @@ static int dce_v8_0_crtc_do_set_base(struct drm_crtc *crtc,
 	u32 viewport_w, viewport_h;
 	int r;
 	bool bypass_lut = false;
-	struct drm_format_name_buf format_name;
 
 	/* no fb bound */
 	if (!atomic && !crtc->primary->fb) {
@@ -1902,8 +1901,8 @@ static int dce_v8_0_crtc_do_set_base(struct drm_crtc *crtc,
 #endif
 		break;
 	default:
-		DRM_ERROR("Unsupported screen format %s\n",
-		          drm_get_format_name(target_fb->format->format, &format_name));
+		DRM_ERROR("Unsupported screen format %p4cc\n",
+			  &target_fb->format->format);
 		return -EINVAL;
 	}
 
diff --git a/drivers/gpu/drm/amd/display/amdgpu_dm/amdgpu_dm.c b/drivers/gpu/drm/amd/display/amdgpu_dm/amdgpu_dm.c
index 86c2b2c..6ed9663 100644
--- a/drivers/gpu/drm/amd/display/amdgpu_dm/amdgpu_dm.c
+++ b/drivers/gpu/drm/amd/display/amdgpu_dm/amdgpu_dm.c
@@ -4505,7 +4505,6 @@ fill_dc_plane_info_and_addr(struct amdgpu_device *adev,
 	const struct drm_framebuffer *fb = plane_state->fb;
 	const struct amdgpu_framebuffer *afb =
 		to_amdgpu_framebuffer(plane_state->fb);
-	struct drm_format_name_buf format_name;
 	int ret;
 
 	memset(plane_info, 0, sizeof(*plane_info));
@@ -4553,8 +4552,8 @@ fill_dc_plane_info_and_addr(struct amdgpu_device *adev,
 		break;
 	default:
 		DRM_ERROR(
-			"Unsupported screen format %s\n",
-			drm_get_format_name(fb->format->format, &format_name));
+			"Unsupported screen format %p4cc\n",
+			&fb->format->format);
 		return -EINVAL;
 	}