Hi Raphael,

Thanks for the patch.

Acked-by: Yannick Fertre <yannick.fer...@foss.st.com>

Le 25/08/2025 à 15:29, Raphael Gallais-Pou a écrit :
DRM_ERROR and similar are deprecated.  Use drm_dev based logging.

Link: 
https://lore.kernel.org/r/20250821130356.883553-1-raphael.gallais-...@foss.st.com
Signed-off-by: Raphael Gallais-Pou <raphael.gallais-...@foss.st.com>
---
Changes in v2:
- Fix kernel test robot's warnings
https://lore.kernel.org/all/202508250637.nlxtks26-...@intel.com/
- Rebased onto latest drm-misc-next
- Remove Yannick's acked-by since the patch changed
---
  drivers/gpu/drm/stm/ltdc.c | 139 +++++++++++++++++++------------------
  1 file changed, 70 insertions(+), 69 deletions(-)

diff --git a/drivers/gpu/drm/stm/ltdc.c b/drivers/gpu/drm/stm/ltdc.c
index ba315c66a04d..b9477fbec1c1 100644
--- a/drivers/gpu/drm/stm/ltdc.c
+++ b/drivers/gpu/drm/stm/ltdc.c
@@ -641,7 +641,7 @@ static inline void ltdc_set_ycbcr_config(struct drm_plane 
*plane, u32 drm_pix_fm
                break;
        default:
                /* RGB or not a YCbCr supported format */
-               DRM_ERROR("Unsupported pixel format: %u\n", drm_pix_fmt);
+               drm_err(plane->dev, "Unsupported pixel format: %u\n", 
drm_pix_fmt);
                return;
        }
@@ -664,18 +664,19 @@ static inline void ltdc_set_ycbcr_coeffs(struct drm_plane *plane)
        u32 lofs = plane->index * LAY_OFS;
if (enc != DRM_COLOR_YCBCR_BT601 && enc != DRM_COLOR_YCBCR_BT709) {
-               DRM_ERROR("color encoding %d not supported, use bt601 by 
default\n", enc);
+               drm_err(plane->dev, "color encoding %d not supported, use bt601 by 
default\n", enc);
                /* set by default color encoding to DRM_COLOR_YCBCR_BT601 */
                enc = DRM_COLOR_YCBCR_BT601;
        }
if (ran != DRM_COLOR_YCBCR_LIMITED_RANGE && ran != DRM_COLOR_YCBCR_FULL_RANGE) {
-               DRM_ERROR("color range %d not supported, use limited range by 
default\n", ran);
+               drm_err(plane->dev,
+                       "color range %d not supported, use limited range by 
default\n", ran);
                /* set by default color range to DRM_COLOR_YCBCR_LIMITED_RANGE 
*/
                ran = DRM_COLOR_YCBCR_LIMITED_RANGE;
        }
- DRM_DEBUG_DRIVER("Color encoding=%d, range=%d\n", enc, ran);
+       drm_err(plane->dev, "Color encoding=%d, range=%d\n", enc, ran);
        regmap_write(ldev->regmap, LTDC_L1CYR0R + lofs,
                     ltdc_ycbcr2rgb_coeffs[enc][ran][0]);
        regmap_write(ldev->regmap, LTDC_L1CYR1R + lofs,
@@ -774,7 +775,7 @@ static void ltdc_crtc_atomic_enable(struct drm_crtc *crtc,
        struct ltdc_device *ldev = crtc_to_ltdc(crtc);
        struct drm_device *ddev = crtc->dev;
- DRM_DEBUG_DRIVER("\n");
+       drm_dbg_driver(crtc->dev, "\n");
pm_runtime_get_sync(ddev->dev); @@ -798,7 +799,7 @@ static void ltdc_crtc_atomic_disable(struct drm_crtc *crtc,
        struct drm_device *ddev = crtc->dev;
        int layer_index = 0;
- DRM_DEBUG_DRIVER("\n");
+       drm_dbg_driver(crtc->dev, "\n");
drm_crtc_vblank_off(crtc); @@ -837,7 +838,7 @@ ltdc_crtc_mode_valid(struct drm_crtc *crtc, result = clk_round_rate(ldev->pixel_clk, target); - DRM_DEBUG_DRIVER("clk rate target %d, available %d\n", target, result);
+       drm_dbg_driver(crtc->dev, "clk rate target %d, available %d\n", target, 
result);
/* Filter modes according to the max frequency supported by the pads */
        if (result > ldev->caps.pad_max_freq_hz)
@@ -872,14 +873,14 @@ static bool ltdc_crtc_mode_fixup(struct drm_crtc *crtc,
        int rate = mode->clock * 1000;
if (clk_set_rate(ldev->pixel_clk, rate) < 0) {
-               DRM_ERROR("Cannot set rate (%dHz) for pixel clk\n", rate);
+               drm_err(crtc->dev, "Cannot set rate (%dHz) for pixel clk\n", 
rate);
                return false;
        }
adjusted_mode->clock = clk_get_rate(ldev->pixel_clk) / 1000; - DRM_DEBUG_DRIVER("requested clock %dkHz, adjusted clock %dkHz\n",
-                        mode->clock, adjusted_mode->clock);
+       drm_dbg_driver(crtc->dev, "requested clock %dkHz, adjusted clock 
%dkHz\n",
+                      mode->clock, adjusted_mode->clock);
return true;
  }
@@ -934,20 +935,20 @@ static void ltdc_crtc_mode_set_nofb(struct drm_crtc *crtc)
        if (!pm_runtime_active(ddev->dev)) {
                ret = pm_runtime_get_sync(ddev->dev);
                if (ret) {
-                       DRM_ERROR("Failed to set mode, cannot get sync\n");
+                       drm_err(crtc->dev, "Failed to set mode, cannot get 
sync\n");
                        return;
                }
        }
- DRM_DEBUG_DRIVER("CRTC:%d mode:%s\n", crtc->base.id, mode->name);
-       DRM_DEBUG_DRIVER("Video mode: %dx%d", mode->hdisplay, mode->vdisplay);
-       DRM_DEBUG_DRIVER(" hfp %d hbp %d hsl %d vfp %d vbp %d vsl %d\n",
-                        mode->hsync_start - mode->hdisplay,
-                        mode->htotal - mode->hsync_end,
-                        mode->hsync_end - mode->hsync_start,
-                        mode->vsync_start - mode->vdisplay,
-                        mode->vtotal - mode->vsync_end,
-                        mode->vsync_end - mode->vsync_start);
+       drm_dbg_driver(crtc->dev, "CRTC:%d mode:%s\n", crtc->base.id, 
mode->name);
+       drm_dbg_driver(crtc->dev, "Video mode: %dx%d", mode->hdisplay, 
mode->vdisplay);
+       drm_dbg_driver(crtc->dev, " hfp %d hbp %d hsl %d vfp %d vbp %d vsl 
%d\n",
+                      mode->hsync_start - mode->hdisplay,
+                      mode->htotal - mode->hsync_end,
+                      mode->hsync_end - mode->hsync_start,
+                      mode->vsync_start - mode->vdisplay,
+                      mode->vtotal - mode->vsync_end,
+                      mode->vsync_end - mode->vsync_start);
/* Convert video timings to ltdc timings */
        hsync = mode->hsync_end - mode->hsync_start - 1;
@@ -1033,7 +1034,7 @@ static void ltdc_crtc_atomic_flush(struct drm_crtc *crtc,
        struct drm_device *ddev = crtc->dev;
        struct drm_pending_vblank_event *event = crtc->state->event;
- DRM_DEBUG_ATOMIC("\n");
+       drm_dbg_atomic(crtc->dev, "\n");
ltdc_crtc_update_clut(crtc); @@ -1121,7 +1122,7 @@ static int ltdc_crtc_enable_vblank(struct drm_crtc *crtc)
        struct ltdc_device *ldev = crtc_to_ltdc(crtc);
        struct drm_crtc_state *state = crtc->state;
- DRM_DEBUG_DRIVER("\n");
+       drm_dbg_driver(crtc->dev, "\n");
if (state->enable)
                regmap_set_bits(ldev->regmap, LTDC_IER, IER_LIE);
@@ -1135,7 +1136,7 @@ static void ltdc_crtc_disable_vblank(struct drm_crtc 
*crtc)
  {
        struct ltdc_device *ldev = crtc_to_ltdc(crtc);
- DRM_DEBUG_DRIVER("\n");
+       drm_dbg_driver(crtc->dev, "\n");
        regmap_clear_bits(ldev->regmap, LTDC_IER, IER_LIE);
  }
@@ -1144,11 +1145,11 @@ static int ltdc_crtc_set_crc_source(struct drm_crtc *crtc, const char *source)
        struct ltdc_device *ldev;
        int ret;
- DRM_DEBUG_DRIVER("\n");
-
        if (!crtc)
                return -ENODEV;
+ drm_dbg_driver(crtc->dev, "\n");
+
        ldev = crtc_to_ltdc(crtc);
if (source && strcmp(source, "auto") == 0) {
@@ -1168,14 +1169,14 @@ static int ltdc_crtc_set_crc_source(struct drm_crtc 
*crtc, const char *source)
  static int ltdc_crtc_verify_crc_source(struct drm_crtc *crtc,
                                       const char *source, size_t *values_cnt)
  {
-       DRM_DEBUG_DRIVER("\n");
-
        if (!crtc)
                return -ENODEV;
+ drm_dbg_driver(crtc->dev, "\n");
+
        if (source && strcmp(source, "auto") != 0) {
-               DRM_DEBUG_DRIVER("Unknown CRC source %s for %s\n",
-                                source, crtc->name);
+               drm_dbg_driver(crtc->dev, "Unknown CRC source %s for %s\n",
+                              source, crtc->name);
                return -EINVAL;
        }
@@ -1233,7 +1234,7 @@ static int ltdc_plane_atomic_check(struct drm_plane *plane,
        struct drm_framebuffer *fb = new_plane_state->fb;
        u32 src_w, src_h;
- DRM_DEBUG_DRIVER("\n");
+       drm_dbg_driver(plane->dev, "\n");
if (!fb)
                return 0;
@@ -1244,7 +1245,7 @@ static int ltdc_plane_atomic_check(struct drm_plane 
*plane,
/* Reject scaling */
        if (src_w != new_plane_state->crtc_w || src_h != 
new_plane_state->crtc_h) {
-               DRM_DEBUG_DRIVER("Scaling is not supported");
+               drm_dbg_driver(plane->dev, "Scaling is not supported");
return -EINVAL;
        }
@@ -1270,7 +1271,7 @@ static void ltdc_plane_atomic_update(struct drm_plane 
*plane,
        enum ltdc_pix_fmt pf;
if (!newstate->crtc || !fb) {
-               DRM_DEBUG_DRIVER("fb or crtc NULL");
+               drm_dbg_driver(plane->dev, "fb or crtc NULL");
                return;
        }
@@ -1280,11 +1281,11 @@ static void ltdc_plane_atomic_update(struct drm_plane *plane,
        src_w = newstate->src_w >> 16;
        src_h = newstate->src_h >> 16;
- DRM_DEBUG_DRIVER("plane:%d fb:%d (%dx%d)@(%d,%d) -> (%dx%d)@(%d,%d)\n",
-                        plane->base.id, fb->base.id,
-                        src_w, src_h, src_x, src_y,
-                        newstate->crtc_w, newstate->crtc_h,
-                        newstate->crtc_x, newstate->crtc_y);
+       drm_dbg_driver(plane->dev, "plane:%d fb:%d (%dx%d)@(%d,%d) -> 
(%dx%d)@(%d,%d)\n",
+                      plane->base.id, fb->base.id,
+                      src_w, src_h, src_x, src_y,
+                      newstate->crtc_w, newstate->crtc_h,
+                      newstate->crtc_x, newstate->crtc_y);
regmap_read(ldev->regmap, LTDC_BPCR, &bpcr); @@ -1312,8 +1313,8 @@ static void ltdc_plane_atomic_update(struct drm_plane *plane,
                val = ltdc_set_flexible_pixel_format(plane, pf);
if (val == NB_PF) {
-               DRM_ERROR("Pixel format %.4s not supported\n",
-                         (char *)&fb->format->format);
+               drm_err(fb->dev, "Pixel format %.4s not supported\n",
+                       (char *)&fb->format->format);
                val = 0;        /* set by default ARGB 32 bits */
        }
        regmap_write_bits(ldev->regmap, LTDC_L1PFCR + lofs, LXPFCR_PF, val);
@@ -1350,7 +1351,7 @@ static void ltdc_plane_atomic_update(struct drm_plane 
*plane,
        if (newstate->rotation & DRM_MODE_REFLECT_Y)
                paddr += (fb->pitches[0] * (y1 - y0));
- DRM_DEBUG_DRIVER("fb: phys 0x%08x", paddr);
+       drm_dbg_driver(fb->dev, "fb: phys 0x%08x", paddr);
        regmap_write(ldev->regmap, LTDC_L1CFBAR + lofs, paddr);
/* Configures the color frame buffer pitch in bytes & line length */
@@ -1517,8 +1518,8 @@ static void ltdc_plane_atomic_disable(struct drm_plane 
*plane,
                regmap_write_bits(ldev->regmap, LTDC_L1RCR + lofs,
                                  LXRCR_IMR | LXRCR_VBR | LXRCR_GRMSK, 
LXRCR_VBR);
- DRM_DEBUG_DRIVER("CRTC:%d plane:%d\n",
-                        oldstate->crtc->base.id, plane->base.id);
+       drm_dbg_driver(plane->dev, "CRTC:%d plane:%d\n",
+                      oldstate->crtc->base.id, plane->base.id);
  }
static void ltdc_plane_atomic_print_state(struct drm_printer *p,
@@ -1632,7 +1633,7 @@ static struct drm_plane *ltdc_plane_create(struct 
drm_device *ddev,
drm_plane_create_alpha_property(plane); - DRM_DEBUG_DRIVER("plane:%d created\n", plane->base.id);
+       drm_dbg_driver(plane->dev, "plane:%d created\n", plane->base.id);
return plane;
  }
@@ -1647,7 +1648,7 @@ static int ltdc_crtc_init(struct drm_device *ddev, struct 
drm_crtc *crtc)
primary = ltdc_plane_create(ddev, DRM_PLANE_TYPE_PRIMARY, 0);
        if (!primary) {
-               DRM_ERROR("Can not create primary plane\n");
+               drm_err(ddev, "Can not create primary plane\n");
                return -EINVAL;
        }
@@ -1668,7 +1669,7 @@ static int ltdc_crtc_init(struct drm_device *ddev, struct drm_crtc *crtc)
                ret = drmm_crtc_init_with_planes(ddev, crtc, primary, NULL,
                                                 &ltdc_crtc_funcs, NULL);
        if (ret) {
-               DRM_ERROR("Can not initialize CRTC\n");
+               drm_err(ddev, "Can not initialize CRTC\n");
                return ret;
        }
@@ -1677,13 +1678,13 @@ static int ltdc_crtc_init(struct drm_device *ddev, struct drm_crtc *crtc)
        drm_mode_crtc_set_gamma_size(crtc, CLUT_SIZE);
        drm_crtc_enable_color_mgmt(crtc, 0, false, CLUT_SIZE);
- DRM_DEBUG_DRIVER("CRTC:%d created\n", crtc->base.id);
+       drm_dbg_driver(ddev, "CRTC:%d created\n", crtc->base.id);
/* Add planes. Note : the first layer is used by primary plane */
        for (i = 1; i < ldev->caps.nb_layers; i++) {
                overlay = ltdc_plane_create(ddev, DRM_PLANE_TYPE_OVERLAY, i);
                if (!overlay) {
-                       DRM_ERROR("Can not create overlay plane %d\n", i);
+                       drm_err(ddev, "Can not create overlay plane %d\n", i);
                        return -ENOMEM;
                }
                if (ldev->caps.dynamic_zorder)
@@ -1704,7 +1705,7 @@ static void ltdc_encoder_disable(struct drm_encoder 
*encoder)
        struct drm_device *ddev = encoder->dev;
        struct ltdc_device *ldev = ddev->dev_private;
- DRM_DEBUG_DRIVER("\n");
+       drm_dbg_driver(encoder->dev, "\n");
/* Disable LTDC */
        regmap_clear_bits(ldev->regmap, LTDC_GCR, GCR_LTDCEN);
@@ -1718,7 +1719,7 @@ static void ltdc_encoder_enable(struct drm_encoder 
*encoder)
        struct drm_device *ddev = encoder->dev;
        struct ltdc_device *ldev = ddev->dev_private;
- DRM_DEBUG_DRIVER("\n");
+       drm_dbg_driver(encoder->dev, "\n");
/* set fifo underrun threshold register */
        if (ldev->caps.fifo_threshold)
@@ -1734,7 +1735,7 @@ static void ltdc_encoder_mode_set(struct drm_encoder 
*encoder,
  {
        struct drm_device *ddev = encoder->dev;
- DRM_DEBUG_DRIVER("\n");
+       drm_dbg_driver(encoder->dev, "\n");
/*
         * Set to default state the pinctrl only with DPI type.
@@ -1770,7 +1771,7 @@ static int ltdc_encoder_init(struct drm_device *ddev, 
struct drm_bridge *bridge)
        if (ret)
                return ret;
- DRM_DEBUG_DRIVER("Bridge encoder:%d created\n", encoder->base.id);
+       drm_dbg_driver(encoder->dev, "Bridge encoder:%d created\n", 
encoder->base.id);
return 0;
  }
@@ -1870,7 +1871,7 @@ void ltdc_suspend(struct drm_device *ddev)
  {
        struct ltdc_device *ldev = ddev->dev_private;
- DRM_DEBUG_DRIVER("\n");
+       drm_dbg_driver(ddev, "\n");
        clk_disable_unprepare(ldev->pixel_clk);
  }
@@ -1879,11 +1880,11 @@ int ltdc_resume(struct drm_device *ddev)
        struct ltdc_device *ldev = ddev->dev_private;
        int ret;
- DRM_DEBUG_DRIVER("\n");
+       drm_dbg_driver(ddev, "\n");
ret = clk_prepare_enable(ldev->pixel_clk);
        if (ret) {
-               DRM_ERROR("failed to enable pixel clock (%d)\n", ret);
+               drm_err(ddev, "failed to enable pixel clock (%d)\n", ret);
                return ret;
        }
@@ -1903,7 +1904,7 @@ int ltdc_load(struct drm_device *ddev)
        int irq, i, nb_endpoints;
        int ret = -ENODEV;
- DRM_DEBUG_DRIVER("\n");
+       drm_dbg_driver(ddev, "\n");
/* Get number of endpoints */
        nb_endpoints = of_graph_get_endpoint_count(np);
@@ -1913,12 +1914,12 @@ int ltdc_load(struct drm_device *ddev)
        ldev->pixel_clk = devm_clk_get(dev, "lcd");
        if (IS_ERR(ldev->pixel_clk)) {
                if (PTR_ERR(ldev->pixel_clk) != -EPROBE_DEFER)
-                       DRM_ERROR("Unable to get lcd clock\n");
+                       drm_err(ddev, "Unable to get lcd clock\n");
                return PTR_ERR(ldev->pixel_clk);
        }
if (clk_prepare_enable(ldev->pixel_clk)) {
-               DRM_ERROR("Unable to prepare pixel clock\n");
+               drm_err(ddev, "Unable to prepare pixel clock\n");
                return -ENODEV;
        }
@@ -1939,7 +1940,7 @@ int ltdc_load(struct drm_device *ddev)
                if (panel) {
                        bridge = drmm_panel_bridge_add(ddev, panel);
                        if (IS_ERR(bridge)) {
-                               DRM_ERROR("panel-bridge endpoint %d\n", i);
+                               drm_err(ddev, "panel-bridge endpoint %d\n", i);
                                ret = PTR_ERR(bridge);
                                goto err;
                        }
@@ -1949,7 +1950,7 @@ int ltdc_load(struct drm_device *ddev)
                        ret = ltdc_encoder_init(ddev, bridge);
                        if (ret) {
                                if (ret != -EPROBE_DEFER)
-                                       DRM_ERROR("init encoder endpoint %d\n", 
i);
+                                       drm_err(ddev, "init encoder endpoint 
%d\n", i);
                                goto err;
                        }
                }
@@ -1967,29 +1968,29 @@ int ltdc_load(struct drm_device *ddev)
ldev->regs = devm_platform_ioremap_resource(pdev, 0);
        if (IS_ERR(ldev->regs)) {
-               DRM_ERROR("Unable to get ltdc registers\n");
+               drm_err(ddev, "Unable to get ltdc registers\n");
                ret = PTR_ERR(ldev->regs);
                goto err;
        }
ldev->regmap = devm_regmap_init_mmio(&pdev->dev, ldev->regs, &stm32_ltdc_regmap_cfg);
        if (IS_ERR(ldev->regmap)) {
-               DRM_ERROR("Unable to regmap ltdc registers\n");
+               drm_err(ddev, "Unable to regmap ltdc registers\n");
                ret = PTR_ERR(ldev->regmap);
                goto err;
        }
ret = ltdc_get_caps(ddev);
        if (ret) {
-               DRM_ERROR("hardware identifier (0x%08x) not supported!\n",
-                         ldev->caps.hw_version);
+               drm_err(ddev, "hardware identifier (0x%08x) not supported!\n",
+                       ldev->caps.hw_version);
                goto err;
        }
/* Disable all interrupts */
        regmap_clear_bits(ldev->regmap, LTDC_IER, IER_MASK);
- DRM_DEBUG_DRIVER("ltdc hw version 0x%08x\n", ldev->caps.hw_version);
+       drm_dbg_driver(ddev, "ltdc hw version 0x%08x\n", ldev->caps.hw_version);
/* initialize default value for fifo underrun threshold & clear interrupt error counters */
        ldev->transfer_err = 0;
@@ -2008,27 +2009,27 @@ int ltdc_load(struct drm_device *ddev)
                                                ltdc_irq_thread, IRQF_ONESHOT,
                                                dev_name(dev), ddev);
                if (ret) {
-                       DRM_ERROR("Failed to register LTDC interrupt\n");
+                       drm_err(ddev, "Failed to register LTDC interrupt\n");
                        goto err;
                }
        }
crtc = drmm_kzalloc(ddev, sizeof(*crtc), GFP_KERNEL);
        if (!crtc) {
-               DRM_ERROR("Failed to allocate crtc\n");
+               drm_err(ddev, "Failed to allocate crtc\n");
                ret = -ENOMEM;
                goto err;
        }
ret = ltdc_crtc_init(ddev, crtc);
        if (ret) {
-               DRM_ERROR("Failed to init crtc\n");
+               drm_err(ddev, "Failed to init crtc\n");
                goto err;
        }
ret = drm_vblank_init(ddev, NB_CRTC);
        if (ret) {
-               DRM_ERROR("Failed calling drm_vblank_init()\n");
+               drm_err(ddev, "Failed calling drm_vblank_init()\n");
                goto err;
        }
@@ -2047,7 +2048,7 @@ int ltdc_load(struct drm_device *ddev) void ltdc_unload(struct drm_device *ddev)
  {
-       DRM_DEBUG_DRIVER("\n");
+       drm_dbg_driver(ddev, "\n");
pm_runtime_disable(ddev->dev);
  }

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