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

3 files changed, 19 insertions, 31 deletions

diff --git a/drivers/gpu/drm/i915/display/intel_display.c b/drivers/gpu/drm/i915/display/intel_display.c
index f2c48e5cdb43..b5c9a059a3f6 100644
--- a/drivers/gpu/drm/i915/display/intel_display.c
+++ b/drivers/gpu/drm/i915/display/intel_display.c
@@ -12238,7 +12238,6 @@ static void intel_dump_plane_state(const struct intel_plane_state *plane_state)
 	struct intel_plane *plane = to_intel_plane(plane_state->uapi.plane);
 	struct drm_i915_private *i915 = to_i915(plane->base.dev);
 	const struct drm_framebuffer *fb = plane_state->hw.fb;
-	struct drm_format_name_buf format_name;
 
 	if (!fb) {
 		drm_dbg_kms(&i915->drm,
@@ -12249,10 +12248,9 @@ static void intel_dump_plane_state(const struct intel_plane_state *plane_state)
 	}
 
 	drm_dbg_kms(&i915->drm,
-		    "[PLANE:%d:%s] fb: [FB:%d] %ux%u format = %s modifier = 0x%llx, visible: %s\n",
+		    "[PLANE:%d:%s] fb: [FB:%d] %ux%u format = %p4cc modifier = 0x%llx, visible: %s\n",
 		    plane->base.base.id, plane->base.name,
-		    fb->base.id, fb->width, fb->height,
-		    drm_get_format_name(fb->format->format, &format_name),
+		    fb->base.id, fb->width, fb->height, &fb->format->format,
 		    fb->modifier, yesno(plane_state->uapi.visible));
 	drm_dbg_kms(&i915->drm, "\trotation: 0x%x, scaler: %d\n",
 		    plane_state->hw.rotation, plane_state->scaler_id);
@@ -16452,13 +16450,9 @@ static int intel_framebuffer_init(struct intel_framebuffer *intel_fb,
 	if (!drm_any_plane_has_format(&dev_priv->drm,
 				      mode_cmd->pixel_format,
 				      mode_cmd->modifier[0])) {
-		struct drm_format_name_buf format_name;
-
 		drm_dbg_kms(&dev_priv->drm,
-			    "unsupported pixel format %s / modifier 0x%llx\n",
-			    drm_get_format_name(mode_cmd->pixel_format,
-						&format_name),
-			    mode_cmd->modifier[0]);
+			    "unsupported pixel format %p4cc / modifier 0x%llx\n",
+			    &mode_cmd->pixel_format, mode_cmd->modifier[0]);
 		goto err;
 	}
 
diff --git a/drivers/gpu/drm/i915/display/intel_display_debugfs.c b/drivers/gpu/drm/i915/display/intel_display_debugfs.c
index cd7e5519ee7d..b02610fa8c5d 100644
--- a/drivers/gpu/drm/i915/display/intel_display_debugfs.c
+++ b/drivers/gpu/drm/i915/display/intel_display_debugfs.c
@@ -772,27 +772,25 @@ static void intel_plane_uapi_info(struct seq_file *m, struct intel_plane *plane)
 	const struct intel_plane_state *plane_state =
 		to_intel_plane_state(plane->base.state);
 	const struct drm_framebuffer *fb = plane_state->uapi.fb;
-	struct drm_format_name_buf format_name;
 	struct drm_rect src, dst;
 	char rot_str[48];
 
 	src = drm_plane_state_src(&plane_state->uapi);
 	dst = drm_plane_state_dest(&plane_state->uapi);
 
-	if (fb)
-		drm_get_format_name(fb->format->format, &format_name);
-
 	plane_rotation(rot_str, sizeof(rot_str),
 		       plane_state->uapi.rotation);
 
-	seq_printf(m, "\t\tuapi: [FB:%d] %s,0x%llx,%dx%d, visible=%s, src=" DRM_RECT_FP_FMT ", dst=" DRM_RECT_FMT ", rotation=%s\n",
-		   fb ? fb->base.id : 0, fb ? format_name.str : "n/a",
-		   fb ? fb->modifier : 0,
-		   fb ? fb->width : 0, fb ? fb->height : 0,
-		   plane_visibility(plane_state),
-		   DRM_RECT_FP_ARG(&src),
-		   DRM_RECT_ARG(&dst),
-		   rot_str);
+	seq_puts(m, "\t\tuapi: [FB:");
+	if (fb)
+		seq_printf(m, "%d] %p4cc,0x%llx,%dx%d", fb->base.id,
+			   &fb->format->format, fb->modifier, fb->width,
+			   fb->height);
+	else
+		seq_puts(m, "0] n/a,0x0,0x0,");
+	seq_printf(m, ", visible=%s, src=" DRM_RECT_FP_FMT ", dst=" DRM_RECT_FMT
+		   ", rotation=%s\n", plane_visibility(plane_state),
+		   DRM_RECT_FP_ARG(&src), DRM_RECT_ARG(&dst), rot_str);
 
 	if (plane_state->planar_linked_plane)
 		seq_printf(m, "\t\tplanar: Linked to [PLANE:%d:%s] as a %s\n",
@@ -805,19 +803,17 @@ static void intel_plane_hw_info(struct seq_file *m, struct intel_plane *plane)
 	const struct intel_plane_state *plane_state =
 		to_intel_plane_state(plane->base.state);
 	const struct drm_framebuffer *fb = plane_state->hw.fb;
-	struct drm_format_name_buf format_name;
 	char rot_str[48];
 
 	if (!fb)
 		return;
 
-	drm_get_format_name(fb->format->format, &format_name);
-
 	plane_rotation(rot_str, sizeof(rot_str),
 		       plane_state->hw.rotation);
 
-	seq_printf(m, "\t\thw: [FB:%d] %s,0x%llx,%dx%d, visible=%s, src=" DRM_RECT_FP_FMT ", dst=" DRM_RECT_FMT ", rotation=%s\n",
-		   fb->base.id, format_name.str,
+	seq_printf(m, "\t\thw: [FB:%d] %p4cc,0x%llx,%dx%d, visible=%s, src="
+		   DRM_RECT_FP_FMT ", dst=" DRM_RECT_FMT ", rotation=%s\n",
+		   fb->base.id, &fb->format->format,
 		   fb->modifier, fb->width, fb->height,
 		   yesno(plane_state->uapi.visible),
 		   DRM_RECT_FP_ARG(&plane_state->uapi.src),
diff --git a/drivers/gpu/drm/i915/display/intel_sprite.c b/drivers/gpu/drm/i915/display/intel_sprite.c
index cf3589fd0ddb..8582b0ec6964 100644
--- a/drivers/gpu/drm/i915/display/intel_sprite.c
+++ b/drivers/gpu/drm/i915/display/intel_sprite.c
@@ -2301,7 +2301,6 @@ static int skl_plane_check_fb(const struct intel_crtc_state *crtc_state,
 	struct drm_i915_private *dev_priv = to_i915(plane->base.dev);
 	const struct drm_framebuffer *fb = plane_state->hw.fb;
 	unsigned int rotation = plane_state->hw.rotation;
-	struct drm_format_name_buf format_name;
 
 	if (!fb)
 		return 0;
@@ -2349,9 +2348,8 @@ static int skl_plane_check_fb(const struct intel_crtc_state *crtc_state,
 		case DRM_FORMAT_XVYU12_16161616:
 		case DRM_FORMAT_XVYU16161616:
 			drm_dbg_kms(&dev_priv->drm,
-				    "Unsupported pixel format %s for 90/270!\n",
-				    drm_get_format_name(fb->format->format,
-							&format_name));
+				    "Unsupported pixel format %p4cc for 90/270!\n",
+				    &fb->format->format);
 			return -EINVAL;
 		default:
 			break;