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.ai...@linux.intel.com>
---
 drivers/gpu/drm/amd/amdgpu/dce_v10_0.c        |  5 ++--
 drivers/gpu/drm/amd/amdgpu/dce_v11_0.c        |  5 ++--
 drivers/gpu/drm/amd/amdgpu/dce_v6_0.c         |  5 ++--
 drivers/gpu/drm/amd/amdgpu/dce_v8_0.c         |  5 ++--
 .../gpu/drm/amd/display/amdgpu_dm/amdgpu_dm.c |  5 ++--
 .../arm/display/komeda/komeda_format_caps.h   | 11 --------
 .../arm/display/komeda/komeda_framebuffer.c   |  4 +--
 .../gpu/drm/arm/display/komeda/komeda_plane.c |  6 ++---
 drivers/gpu/drm/arm/malidp_mw.c               |  7 ++----
 drivers/gpu/drm/drm_atomic.c                  |  8 ++----
 drivers/gpu/drm/drm_crtc.c                    |  7 ++----
 drivers/gpu/drm/drm_fourcc.c                  | 25 -------------------
 drivers/gpu/drm/drm_framebuffer.c             | 11 +++-----
 drivers/gpu/drm/drm_mipi_dbi.c                |  5 ++--
 drivers/gpu/drm/drm_plane.c                   |  8 ++----
 .../gpu/drm/hisilicon/kirin/kirin_drm_ade.c   |  5 ++--
 drivers/gpu/drm/i915/display/intel_display.c  | 14 +++--------
 .../drm/i915/display/intel_display_debugfs.c  | 19 ++++++--------
 drivers/gpu/drm/i915/display/intel_sprite.c   |  6 ++---
 drivers/gpu/drm/mcde/mcde_display.c           |  6 ++---
 drivers/gpu/drm/msm/disp/dpu1/dpu_crtc.c      |  6 ++---
 drivers/gpu/drm/nouveau/nouveau_display.c     |  9 +++----
 drivers/gpu/drm/radeon/atombios_crtc.c        | 10 +++-----
 drivers/gpu/drm/sun4i/sun4i_backend.c         |  6 ++---
 drivers/gpu/drm/vkms/vkms_writeback.c         |  7 ++----
 drivers/gpu/drm/vmwgfx/vmwgfx_kms.c           | 15 +++++------
 include/drm/drm_fourcc.h                      |  1 -
 27 files changed, 64 insertions(+), 157 deletions(-)

diff --git a/drivers/gpu/drm/amd/amdgpu/dce_v10_0.c 
b/drivers/gpu/drm/amd/amdgpu/dce_v10_0.c
index 7944781e1086..ea825b4f8ee8 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 1b6ff0470011..a360a6dec198 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 83a88385b762..ef124ac853b6 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 224b30214427..c98650183828 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 c6da89df055d..fcef3bf14952 100644
--- a/drivers/gpu/drm/amd/display/amdgpu_dm/amdgpu_dm.c
+++ b/drivers/gpu/drm/amd/display/amdgpu_dm/amdgpu_dm.c
@@ -4465,7 +4465,6 @@ 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));
@@ -4513,8 +4512,8 @@ 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;
        }
 
diff --git a/drivers/gpu/drm/arm/display/komeda/komeda_format_caps.h 
b/drivers/gpu/drm/arm/display/komeda/komeda_format_caps.h
index 32273cf18f7c..cf7a183f773d 100644
--- a/drivers/gpu/drm/arm/display/komeda/komeda_format_caps.h
+++ b/drivers/gpu/drm/arm/display/komeda/komeda_format_caps.h
@@ -82,17 +82,6 @@ struct komeda_format_caps_table {
 
 extern u64 komeda_supported_modifiers[];
 
-static inline const char *komeda_get_format_name(u32 fourcc, u64 modifier)
-{
-       struct drm_format_name_buf buf;
-       static char name[64];
-
-       snprintf(name, sizeof(name), "%s with modifier: 0x%llx.",
-                drm_get_format_name(fourcc, &buf), modifier);
-
-       return name;
-}
-
 const struct komeda_format_caps *
 komeda_get_format_caps(struct komeda_format_caps_table *table,
                       u32 fourcc, u64 modifier);
diff --git a/drivers/gpu/drm/arm/display/komeda/komeda_framebuffer.c 
b/drivers/gpu/drm/arm/display/komeda/komeda_framebuffer.c
index 170f9dc8ec19..3c372d2deb0a 100644
--- a/drivers/gpu/drm/arm/display/komeda/komeda_framebuffer.c
+++ b/drivers/gpu/drm/arm/display/komeda/komeda_framebuffer.c
@@ -276,8 +276,8 @@ bool komeda_fb_is_layer_supported(struct komeda_fb *kfb, 
u32 layer_type,
        supported = komeda_format_mod_supported(&mdev->fmt_tbl, layer_type,
                                                fourcc, modifier, rot);
        if (!supported)
-               DRM_DEBUG_ATOMIC("Layer TYPE: %d doesn't support fb FMT: %s.\n",
-                       layer_type, komeda_get_format_name(fourcc, modifier));
+               DRM_DEBUG_ATOMIC("Layer TYPE: %d doesn't support fb FMT: %p4cc 
with modifier: 0x%llx.\n",
+                                layer_type, &fourcc, modifier);
 
        return supported;
 }
diff --git a/drivers/gpu/drm/arm/display/komeda/komeda_plane.c 
b/drivers/gpu/drm/arm/display/komeda/komeda_plane.c
index 98e915e325dd..2d5066ea270c 100644
--- a/drivers/gpu/drm/arm/display/komeda/komeda_plane.c
+++ b/drivers/gpu/drm/arm/display/komeda/komeda_plane.c
@@ -49,10 +49,8 @@ komeda_plane_init_data_flow(struct drm_plane_state *st,
 
        dflow->rot = drm_rotation_simplify(st->rotation, caps->supported_rots);
        if (!has_bits(dflow->rot, caps->supported_rots)) {
-               DRM_DEBUG_ATOMIC("rotation(0x%x) isn't supported by %s.\n",
-                                dflow->rot,
-                                komeda_get_format_name(caps->fourcc,
-                                                       fb->modifier));
+               DRM_DEBUG_ATOMIC("rotation(0x%x) isn't supported by %p4cc with 
modifier: 0x%llx.\n",
+                                dflow->rot, &caps->fourcc, fb->modifier);
                return -EINVAL;
        }
 
diff --git a/drivers/gpu/drm/arm/malidp_mw.c b/drivers/gpu/drm/arm/malidp_mw.c
index 7d0e7b031e44..f5847a79dd7e 100644
--- a/drivers/gpu/drm/arm/malidp_mw.c
+++ b/drivers/gpu/drm/arm/malidp_mw.c
@@ -151,11 +151,8 @@ malidp_mw_encoder_atomic_check(struct drm_encoder *encoder,
                malidp_hw_get_format_id(&malidp->dev->hw->map, SE_MEMWRITE,
                                        fb->format->format, !!fb->modifier);
        if (mw_state->format == MALIDP_INVALID_FORMAT_ID) {
-               struct drm_format_name_buf format_name;
-
-               DRM_DEBUG_KMS("Invalid pixel format %s\n",
-                             drm_get_format_name(fb->format->format,
-                                                 &format_name));
+               DRM_DEBUG_KMS("Invalid pixel format %p4cc\n",
+                             &fb->format->format);
                return -EINVAL;
        }
 
diff --git a/drivers/gpu/drm/drm_atomic.c b/drivers/gpu/drm/drm_atomic.c
index dda60051854b..ce2ee6b8bf34 100644
--- a/drivers/gpu/drm/drm_atomic.c
+++ b/drivers/gpu/drm/drm_atomic.c
@@ -578,13 +578,9 @@ static int drm_atomic_plane_check(const struct 
drm_plane_state *old_plane_state,
        ret = drm_plane_check_pixel_format(plane, fb->format->format,
                                           fb->modifier);
        if (ret) {
-               struct drm_format_name_buf format_name;
-
-               DRM_DEBUG_ATOMIC("[PLANE:%d:%s] invalid pixel format %s, 
modifier 0x%llx\n",
+               DRM_DEBUG_ATOMIC("[PLANE:%d:%s] invalid pixel format %p4cc, 
modifier 0x%llx\n",
                                 plane->base.id, plane->name,
-                                drm_get_format_name(fb->format->format,
-                                                    &format_name),
-                                fb->modifier);
+                                &fb->format->format, fb->modifier);
                return ret;
        }
 
diff --git a/drivers/gpu/drm/drm_crtc.c b/drivers/gpu/drm/drm_crtc.c
index 74090fc3aa55..9ba2d3640b47 100644
--- a/drivers/gpu/drm/drm_crtc.c
+++ b/drivers/gpu/drm/drm_crtc.c
@@ -663,11 +663,8 @@ int drm_mode_setcrtc(struct drm_device *dev, void *data,
                                                           fb->format->format,
                                                           fb->modifier);
                        if (ret) {
-                               struct drm_format_name_buf format_name;
-
-                               DRM_DEBUG_KMS("Invalid pixel format %s, 
modifier 0x%llx\n",
-                                             
drm_get_format_name(fb->format->format,
-                                                                 &format_name),
+                               DRM_DEBUG_KMS("Invalid pixel format %p4cc, 
modifier 0x%llx\n",
+                                             &fb->format->format,
                                              fb->modifier);
                                goto out;
                        }
diff --git a/drivers/gpu/drm/drm_fourcc.c b/drivers/gpu/drm/drm_fourcc.c
index 03262472059c..5cf45aa6eedc 100644
--- a/drivers/gpu/drm/drm_fourcc.c
+++ b/drivers/gpu/drm/drm_fourcc.c
@@ -30,11 +30,6 @@
 #include <drm/drm_device.h>
 #include <drm/drm_fourcc.h>
 
-static char printable_char(int c)
-{
-       return isascii(c) && isprint(c) ? c : '?';
-}
-
 /**
  * drm_mode_legacy_fb_format - compute drm fourcc code from legacy description
  * @bpp: bits per pixels
@@ -130,26 +125,6 @@ uint32_t drm_driver_legacy_fb_format(struct drm_device 
*dev,
 }
 EXPORT_SYMBOL(drm_driver_legacy_fb_format);
 
-/**
- * drm_get_format_name - fill a string with a drm fourcc format's name
- * @format: format to compute name of
- * @buf: caller-supplied buffer
- */
-const char *drm_get_format_name(uint32_t format, struct drm_format_name_buf 
*buf)
-{
-       snprintf(buf->str, sizeof(buf->str),
-                "%c%c%c%c %s-endian (0x%08x)",
-                printable_char(format & 0xff),
-                printable_char((format >> 8) & 0xff),
-                printable_char((format >> 16) & 0xff),
-                printable_char((format >> 24) & 0x7f),
-                format & DRM_FORMAT_BIG_ENDIAN ? "big" : "little",
-                format);
-
-       return buf->str;
-}
-EXPORT_SYMBOL(drm_get_format_name);
-
 /*
  * Internal function to query information for a given format. See
  * drm_format_info() for the public API.
diff --git a/drivers/gpu/drm/drm_framebuffer.c 
b/drivers/gpu/drm/drm_framebuffer.c
index aca62ed51e82..4d01464b6f95 100644
--- a/drivers/gpu/drm/drm_framebuffer.c
+++ b/drivers/gpu/drm/drm_framebuffer.c
@@ -177,11 +177,8 @@ static int framebuffer_check(struct drm_device *dev,
 
        /* check if the format is supported at all */
        if (!__drm_format_info(r->pixel_format)) {
-               struct drm_format_name_buf format_name;
-
-               DRM_DEBUG_KMS("bad framebuffer format %s\n",
-                             drm_get_format_name(r->pixel_format,
-                                                 &format_name));
+               DRM_DEBUG_KMS("bad framebuffer format %p4cc\n",
+                             &r->pixel_format);
                return -EINVAL;
        }
 
@@ -1160,14 +1157,12 @@ EXPORT_SYMBOL(drm_framebuffer_plane_height);
 void drm_framebuffer_print_info(struct drm_printer *p, unsigned int indent,
                                const struct drm_framebuffer *fb)
 {
-       struct drm_format_name_buf format_name;
        unsigned int i;
 
        drm_printf_indent(p, indent, "allocated by = %s\n", fb->comm);
        drm_printf_indent(p, indent, "refcount=%u\n",
                          drm_framebuffer_read_refcount(fb));
-       drm_printf_indent(p, indent, "format=%s\n",
-                         drm_get_format_name(fb->format->format, 
&format_name));
+       drm_printf_indent(p, indent, "format=%p4cc\n", &fb->format->format);
        drm_printf_indent(p, indent, "modifier=0x%llx\n", fb->modifier);
        drm_printf_indent(p, indent, "size=%ux%u\n", fb->width, fb->height);
        drm_printf_indent(p, indent, "layers:\n");
diff --git a/drivers/gpu/drm/drm_mipi_dbi.c b/drivers/gpu/drm/drm_mipi_dbi.c
index 230c4fd7131c..43a9b739bba7 100644
--- a/drivers/gpu/drm/drm_mipi_dbi.c
+++ b/drivers/gpu/drm/drm_mipi_dbi.c
@@ -203,7 +203,6 @@ int mipi_dbi_buf_copy(void *dst, struct drm_framebuffer *fb,
        struct drm_gem_object *gem = drm_gem_fb_get_obj(fb, 0);
        struct drm_gem_cma_object *cma_obj = to_drm_gem_cma_obj(gem);
        struct dma_buf_attachment *import_attach = gem->import_attach;
-       struct drm_format_name_buf format_name;
        void *src = cma_obj->vaddr;
        int ret = 0;
 
@@ -225,8 +224,8 @@ int mipi_dbi_buf_copy(void *dst, struct drm_framebuffer *fb,
                drm_fb_xrgb8888_to_rgb565(dst, src, fb, clip, swap);
                break;
        default:
-               drm_err_once(fb->dev, "Format is not supported: %s\n",
-                            drm_get_format_name(fb->format->format, 
&format_name));
+               drm_err_once(fb->dev, "Format is not supported: %p4cc\n",
+                            &fb->format->format);
                return -EINVAL;
        }
 
diff --git a/drivers/gpu/drm/drm_plane.c b/drivers/gpu/drm/drm_plane.c
index a0cb746bcb0a..4d8429917d7d 100644
--- a/drivers/gpu/drm/drm_plane.c
+++ b/drivers/gpu/drm/drm_plane.c
@@ -623,12 +623,8 @@ static int __setplane_check(struct drm_plane *plane,
        ret = drm_plane_check_pixel_format(plane, fb->format->format,
                                           fb->modifier);
        if (ret) {
-               struct drm_format_name_buf format_name;
-
-               DRM_DEBUG_KMS("Invalid pixel format %s, modifier 0x%llx\n",
-                             drm_get_format_name(fb->format->format,
-                                                 &format_name),
-                             fb->modifier);
+               DRM_DEBUG_KMS("Invalid pixel format %p4cc, modifier 0x%llx\n",
+                             &fb->format->format, fb->modifier);
                return ret;
        }
 
diff --git a/drivers/gpu/drm/hisilicon/kirin/kirin_drm_ade.c 
b/drivers/gpu/drm/hisilicon/kirin/kirin_drm_ade.c
index aa6c53f88f7c..70aa6c8844c0 100644
--- a/drivers/gpu/drm/hisilicon/kirin/kirin_drm_ade.c
+++ b/drivers/gpu/drm/hisilicon/kirin/kirin_drm_ade.c
@@ -549,16 +549,15 @@ static void ade_rdma_set(void __iomem *base, struct 
drm_framebuffer *fb,
                         u32 ch, u32 y, u32 in_h, u32 fmt)
 {
        struct drm_gem_cma_object *obj = drm_fb_cma_get_gem_obj(fb, 0);
-       struct drm_format_name_buf format_name;
        u32 reg_ctrl, reg_addr, reg_size, reg_stride, reg_space, reg_en;
        u32 stride = fb->pitches[0];
        u32 addr = (u32)obj->paddr + y * stride;
 
        DRM_DEBUG_DRIVER("rdma%d: (y=%d, height=%d), stride=%d, paddr=0x%x\n",
                         ch + 1, y, in_h, stride, (u32)obj->paddr);
-       DRM_DEBUG_DRIVER("addr=0x%x, fb:%dx%d, pixel_format=%d(%s)\n",
+       DRM_DEBUG_DRIVER("addr=0x%x, fb:%dx%d, pixel_format=%d(%p4cc)\n",
                         addr, fb->width, fb->height, fmt,
-                        drm_get_format_name(fb->format->format, &format_name));
+                        &fb->format->format);
 
        /* get reg offset */
        reg_ctrl = RD_CH_CTRL(ch);
diff --git a/drivers/gpu/drm/i915/display/intel_display.c 
b/drivers/gpu/drm/i915/display/intel_display.c
index 53a00cf3fa32..7981627390a0 100644
--- a/drivers/gpu/drm/i915/display/intel_display.c
+++ b/drivers/gpu/drm/i915/display/intel_display.c
@@ -13319,7 +13319,6 @@ 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,
@@ -13330,10 +13329,9 @@ 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);
@@ -17927,13 +17925,9 @@ 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 ca41e8c00ad7..a5c9fe2e56b3 100644
--- a/drivers/gpu/drm/i915/display/intel_display_debugfs.c
+++ b/drivers/gpu/drm/i915/display/intel_display_debugfs.c
@@ -771,21 +771,21 @@ 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",
+       seq_printf(m, "\t\tuapi: [FB:%d] ", fb ? fb->base.id : 0);
+       if (fb)
+               seq_printf(m, "%p4cc", &fb->format->format);
+       else
+               seq_puts(m, "n/a");
+       seq_printf(m, ",0x%llx,%dx%d, visible=%s, src=" DRM_RECT_FP_FMT ", 
dst=" DRM_RECT_FMT ", rotation=%s\n",
                   fb ? fb->modifier : 0,
                   fb ? fb->width : 0, fb ? fb->height : 0,
                   plane_visibility(plane_state),
@@ -804,19 +804,16 @@ 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 019a2d6d807a..e4e55d1aec10 100644
--- a/drivers/gpu/drm/i915/display/intel_sprite.c
+++ b/drivers/gpu/drm/i915/display/intel_sprite.c
@@ -2285,7 +2285,6 @@ 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;
@@ -2333,9 +2332,8 @@ 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;
diff --git a/drivers/gpu/drm/mcde/mcde_display.c 
b/drivers/gpu/drm/mcde/mcde_display.c
index 7c2e0b865441..83ac7493e751 100644
--- a/drivers/gpu/drm/mcde/mcde_display.c
+++ b/drivers/gpu/drm/mcde/mcde_display.c
@@ -1161,7 +1161,6 @@ static void mcde_display_enable(struct 
drm_simple_display_pipe *pipe,
        int dsi_pkt_size;
        int fifo_wtrmrk;
        int cpp = fb->format->cpp[0];
-       struct drm_format_name_buf tmp;
        u32 dsi_formatter_frame;
        u32 val;
        int ret;
@@ -1173,9 +1172,8 @@ static void mcde_display_enable(struct 
drm_simple_display_pipe *pipe,
                return;
        }
 
-       dev_info(drm->dev, "enable MCDE, %d x %d format %s\n",
-                mode->hdisplay, mode->vdisplay,
-                drm_get_format_name(format, &tmp));
+       dev_info(drm->dev, "enable MCDE, %d x %d format %p4cc\n",
+                mode->hdisplay, mode->vdisplay, &format);
 
 
        /* Clear any pending interrupts */
diff --git a/drivers/gpu/drm/msm/disp/dpu1/dpu_crtc.c 
b/drivers/gpu/drm/msm/disp/dpu1/dpu_crtc.c
index 56eb22554197..ea9d73983d13 100644
--- a/drivers/gpu/drm/msm/disp/dpu1/dpu_crtc.c
+++ b/drivers/gpu/drm/msm/disp/dpu1/dpu_crtc.c
@@ -71,7 +71,6 @@ static void _dpu_crtc_setup_blend_cfg(struct dpu_crtc_mixer 
*mixer,
 {
        struct dpu_hw_mixer *lm = mixer->hw_lm;
        uint32_t blend_op;
-       struct drm_format_name_buf format_name;
 
        /* default to opaque blending */
        blend_op = DPU_BLEND_FG_ALPHA_FG_CONST |
@@ -87,9 +86,8 @@ static void _dpu_crtc_setup_blend_cfg(struct dpu_crtc_mixer 
*mixer,
        lm->ops.setup_blend_config(lm, pstate->stage,
                                0xFF, 0, blend_op);
 
-       DPU_DEBUG("format:%s, alpha_en:%u blend_op:0x%x\n",
-               drm_get_format_name(format->base.pixel_format, &format_name),
-               format->alpha_enable, blend_op);
+       DPU_DEBUG("format:%p4cc, alpha_en:%u blend_op:0x%x\n",
+                 &format->base.pixel_format, format->alpha_enable, blend_op);
 }
 
 static void _dpu_crtc_program_lm_output_roi(struct drm_crtc *crtc)
diff --git a/drivers/gpu/drm/nouveau/nouveau_display.c 
b/drivers/gpu/drm/nouveau/nouveau_display.c
index bceb48a2dfca..a305b749c321 100644
--- a/drivers/gpu/drm/nouveau/nouveau_display.c
+++ b/drivers/gpu/drm/nouveau/nouveau_display.c
@@ -322,12 +322,9 @@ nouveau_framebuffer_new(struct drm_device *dev,
             mode_cmd->pitches[0] >= 0x10000 || /* at most 64k pitch */
             (mode_cmd->pitches[1] && /* pitches for planes must match */
              mode_cmd->pitches[0] != mode_cmd->pitches[1]))) {
-               struct drm_format_name_buf format_name;
-               DRM_DEBUG_KMS("Unsuitable framebuffer: format: %s; pitches: 
0x%x\n 0x%x\n",
-                             drm_get_format_name(mode_cmd->pixel_format,
-                                                 &format_name),
-                             mode_cmd->pitches[0],
-                             mode_cmd->pitches[1]);
+               DRM_DEBUG_KMS("Unsuitable framebuffer: format: %p4cc; pitches: 
0x%x\n 0x%x\n",
+                             &mode_cmd->pixel_format,
+                             mode_cmd->pitches[0], mode_cmd->pitches[1]);
                return -EINVAL;
        }
 
diff --git a/drivers/gpu/drm/radeon/atombios_crtc.c 
b/drivers/gpu/drm/radeon/atombios_crtc.c
index 1979ed3d6547..c94e429e75f9 100644
--- a/drivers/gpu/drm/radeon/atombios_crtc.c
+++ b/drivers/gpu/drm/radeon/atombios_crtc.c
@@ -1157,7 +1157,6 @@ static int dce4_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) {
@@ -1267,8 +1266,8 @@ static int dce4_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;
        }
 
@@ -1478,7 +1477,6 @@ static int avivo_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) {
@@ -1579,8 +1577,8 @@ static int avivo_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/sun4i/sun4i_backend.c 
b/drivers/gpu/drm/sun4i/sun4i_backend.c
index 522e51a404cc..bf8cfefa0365 100644
--- a/drivers/gpu/drm/sun4i/sun4i_backend.c
+++ b/drivers/gpu/drm/sun4i/sun4i_backend.c
@@ -510,7 +510,6 @@ static int sun4i_backend_atomic_check(struct sunxi_engine 
*engine,
                struct sun4i_layer_state *layer_state =
                        state_to_sun4i_layer_state(plane_state);
                struct drm_framebuffer *fb = plane_state->fb;
-               struct drm_format_name_buf format_name;
 
                if (!sun4i_backend_plane_is_supported(plane_state,
                                                      
&layer_state->uses_frontend))
@@ -527,9 +526,8 @@ static int sun4i_backend_atomic_check(struct sunxi_engine 
*engine,
                        }
                }
 
-               DRM_DEBUG_DRIVER("Plane FB format is %s\n",
-                                drm_get_format_name(fb->format->format,
-                                                    &format_name));
+               DRM_DEBUG_DRIVER("Plane FB format is %p4cc\n",
+                                &fb->format->format);
                if (fb->format->has_alpha || (plane_state->alpha != 
DRM_BLEND_ALPHA_OPAQUE))
                        num_alpha_planes++;
 
diff --git a/drivers/gpu/drm/vkms/vkms_writeback.c 
b/drivers/gpu/drm/vkms/vkms_writeback.c
index 78fdc1d59186..0935686475a0 100644
--- a/drivers/gpu/drm/vkms/vkms_writeback.c
+++ b/drivers/gpu/drm/vkms/vkms_writeback.c
@@ -42,11 +42,8 @@ static int vkms_wb_encoder_atomic_check(struct drm_encoder 
*encoder,
        }
 
        if (fb->format->format != vkms_wb_formats[0]) {
-               struct drm_format_name_buf format_name;
-
-               DRM_DEBUG_KMS("Invalid pixel format %s\n",
-                             drm_get_format_name(fb->format->format,
-                                                 &format_name));
+               DRM_DEBUG_KMS("Invalid pixel format %p4cc\n",
+                             &fb->format->format);
                return -EINVAL;
        }
 
diff --git a/drivers/gpu/drm/vmwgfx/vmwgfx_kms.c 
b/drivers/gpu/drm/vmwgfx/vmwgfx_kms.c
index bc67f2b930e1..0cd2c55036bb 100644
--- a/drivers/gpu/drm/vmwgfx/vmwgfx_kms.c
+++ b/drivers/gpu/drm/vmwgfx/vmwgfx_kms.c
@@ -895,7 +895,6 @@ static int vmw_kms_new_framebuffer_surface(struct 
vmw_private *dev_priv,
        struct vmw_framebuffer_surface *vfbs;
        enum SVGA3dSurfaceFormat format;
        int ret;
-       struct drm_format_name_buf format_name;
 
        /* 3D is only supported on HWv8 and newer hosts */
        if (dev_priv->active_display_unit == vmw_du_legacy)
@@ -933,8 +932,8 @@ static int vmw_kms_new_framebuffer_surface(struct 
vmw_private *dev_priv,
                format = SVGA3D_A1R5G5B5;
                break;
        default:
-               DRM_ERROR("Invalid pixel format: %s\n",
-                         drm_get_format_name(mode_cmd->pixel_format, 
&format_name));
+               DRM_ERROR("Invalid pixel format: %p4cc\n",
+                         &mode_cmd->pixel_format);
                return -EINVAL;
        }
 
@@ -1149,7 +1148,6 @@ static int vmw_create_bo_proxy(struct drm_device *dev,
        uint32_t format;
        struct vmw_resource *res;
        unsigned int bytes_pp;
-       struct drm_format_name_buf format_name;
        int ret;
 
        switch (mode_cmd->pixel_format) {
@@ -1171,8 +1169,8 @@ static int vmw_create_bo_proxy(struct drm_device *dev,
                break;
 
        default:
-               DRM_ERROR("Invalid framebuffer format %s\n",
-                         drm_get_format_name(mode_cmd->pixel_format, 
&format_name));
+               DRM_ERROR("Invalid framebuffer format %p4cc\n",
+                         &mode_cmd->pixel_format);
                return -EINVAL;
        }
 
@@ -1216,7 +1214,6 @@ static int vmw_kms_new_framebuffer_bo(struct vmw_private 
*dev_priv,
        struct drm_device *dev = dev_priv->dev;
        struct vmw_framebuffer_bo *vfbd;
        unsigned int requested_size;
-       struct drm_format_name_buf format_name;
        int ret;
 
        requested_size = mode_cmd->height * mode_cmd->pitches[0];
@@ -1236,8 +1233,8 @@ static int vmw_kms_new_framebuffer_bo(struct vmw_private 
*dev_priv,
                case DRM_FORMAT_RGB565:
                        break;
                default:
-                       DRM_ERROR("Invalid pixel format: %s\n",
-                                 drm_get_format_name(mode_cmd->pixel_format, 
&format_name));
+                       DRM_ERROR("Invalid pixel format: %p4cc\n",
+                                 &mode_cmd->pixel_format);
                        return -EINVAL;
                }
        }
diff --git a/include/drm/drm_fourcc.h b/include/drm/drm_fourcc.h
index 156b122c0ad5..3ea17b8a79d3 100644
--- a/include/drm/drm_fourcc.h
+++ b/include/drm/drm_fourcc.h
@@ -318,6 +318,5 @@ unsigned int drm_format_info_block_height(const struct 
drm_format_info *info,
                                          int plane);
 uint64_t drm_format_info_min_pitch(const struct drm_format_info *info,
                                   int plane, unsigned int buffer_width);
-const char *drm_get_format_name(uint32_t format, struct drm_format_name_buf 
*buf);
 
 #endif /* __DRM_FOURCC_H__ */
-- 
2.29.2

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