Hi,I've pushed this fix into drm-misc-next. It will hopefully restore the fbdev consoles. Sorry for the inconvenience. If things still don't work, stating
video=1024x768-32 on the kernel command line should be a safe override on most systems. Best regards Thomas Am 06.01.23 um 12:23 schrieb Thomas Zimmermann:
Replace the combination of bpp and depth with a single color-mode argument. Handle special cases in simpledrm and ofdrm. Hard-code XRGB8888 as fallback format for cases where no given format works. The color-mode argument accepts the same values as the kernel's video parameter. These are mostly bpp values between 1 and 32. The exceptions are 15, which has a color depth of 15 and a bpp value of 16; and 32, which has a color depth of 24 and a bpp value of 32. v4: * add back lost test for bpp_specified (Maira) * add Fixes tag (Daniel) v3: * fix ofdrm build (Maxime) v2: * minimize changes (Daniel) * use drm_driver_legacy_fb_format() (Daniel) Signed-off-by: Thomas Zimmermann <tzimmermann@xxxxxxx> Fixes: 37c90d589dc0 ("drm/fb-helper: Fix single-probe color-format selection") Cc: Thomas Zimmermann <tzimmermann@xxxxxxx> Cc: Javier Martinez Canillas <javierm@xxxxxxxxxx> Cc: Maarten Lankhorst <maarten.lankhorst@xxxxxxxxxxxxxxx> Cc: Maxime Ripard <mripard@xxxxxxxxxx> --- drivers/gpu/drm/drm_fb_helper.c | 42 ++++++++++++++++++-------------- drivers/gpu/drm/tiny/ofdrm.c | 7 +++++- drivers/gpu/drm/tiny/simpledrm.c | 7 +++++- 3 files changed, 36 insertions(+), 20 deletions(-) diff --git a/drivers/gpu/drm/drm_fb_helper.c b/drivers/gpu/drm/drm_fb_helper.c index 1369ca4ae39b..427631706128 100644 --- a/drivers/gpu/drm/drm_fb_helper.c +++ b/drivers/gpu/drm/drm_fb_helper.c @@ -1756,24 +1756,21 @@ static uint32_t drm_fb_helper_find_format(struct drm_fb_helper *fb_helper, const return DRM_FORMAT_INVALID; }-static uint32_t drm_fb_helper_find_cmdline_format(struct drm_fb_helper *fb_helper,- const uint32_t *formats, size_t format_count, - const struct drm_cmdline_mode *cmdline_mode) +static uint32_t drm_fb_helper_find_color_mode_format(struct drm_fb_helper *fb_helper, + const uint32_t *formats, size_t format_count, + unsigned int color_mode) { struct drm_device *dev = fb_helper->dev; uint32_t bpp, depth;- if (!cmdline_mode->bpp_specified)- return DRM_FORMAT_INVALID; - - switch (cmdline_mode->bpp) { + switch (color_mode) { case 1: case 2: case 4: case 8: case 16: case 24: - bpp = depth = cmdline_mode->bpp; + bpp = depth = color_mode; break; case 15: bpp = 16; @@ -1784,7 +1781,7 @@ static uint32_t drm_fb_helper_find_cmdline_format(struct drm_fb_helper *fb_helpe depth = 24; break; default: - drm_info(dev, "unsupported bpp value of %d\n", cmdline_mode->bpp); + drm_info(dev, "unsupported color mode of %d\n", color_mode); return DRM_FORMAT_INVALID; }@@ -1817,10 +1814,13 @@ static int __drm_fb_helper_find_sizes(struct drm_fb_helper *fb_helper, int prefedrm_client_for_each_connector_iter(connector, &conn_iter) { struct drm_cmdline_mode *cmdline_mode = &connector->cmdline_mode;- surface_format = drm_fb_helper_find_cmdline_format(fb_helper,- plane->format_types, - plane->format_count, - cmdline_mode); + if (!cmdline_mode->bpp_specified) + continue; + + surface_format = drm_fb_helper_find_color_mode_format(fb_helper, + plane->format_types, + plane->format_count, + cmdline_mode->bpp); if (surface_format != DRM_FORMAT_INVALID) break; /* found supported format */ } @@ -1829,17 +1829,23 @@ static int __drm_fb_helper_find_sizes(struct drm_fb_helper *fb_helper, int prefe if (surface_format != DRM_FORMAT_INVALID) break; /* found supported format */- /* try preferred bpp/depth */- surface_format = drm_fb_helper_find_format(fb_helper, plane->format_types, - plane->format_count, preferred_bpp, - dev->mode_config.preferred_depth); + /* try preferred color mode */ + surface_format = drm_fb_helper_find_color_mode_format(fb_helper, + plane->format_types, + plane->format_count, + preferred_bpp); if (surface_format != DRM_FORMAT_INVALID) break; /* found supported format */ }if (surface_format == DRM_FORMAT_INVALID) {+ /* + * If none of the given color modes works, fall back + * to XRGB8888. Drivers are expected to provide this + * format for compatibility with legacy applications. + */ drm_warn(dev, "No compatible format found\n"); - return -EAGAIN; + surface_format = drm_driver_legacy_fb_format(dev, 32, 24); }info = drm_format_info(surface_format);diff --git a/drivers/gpu/drm/tiny/ofdrm.c b/drivers/gpu/drm/tiny/ofdrm.c index 39c5fd463fec..6e349ca42485 100644 --- a/drivers/gpu/drm/tiny/ofdrm.c +++ b/drivers/gpu/drm/tiny/ofdrm.c @@ -1352,6 +1352,7 @@ static int ofdrm_probe(struct platform_device *pdev) { struct ofdrm_device *odev; struct drm_device *dev; + unsigned int color_mode; int ret;odev = ofdrm_device_create(&ofdrm_driver, pdev);@@ -1363,7 +1364,11 @@ static int ofdrm_probe(struct platform_device *pdev) if (ret) return ret;- drm_fbdev_generic_setup(dev, drm_format_info_bpp(odev->format, 0));+ color_mode = drm_format_info_bpp(odev->format, 0); + if (color_mode == 16) + color_mode = odev->format->depth; // can be 15 or 16 + + drm_fbdev_generic_setup(dev, color_mode);return 0;} diff --git a/drivers/gpu/drm/tiny/simpledrm.c b/drivers/gpu/drm/tiny/simpledrm.c index 7355617f38d3..f658b99c796a 100644 --- a/drivers/gpu/drm/tiny/simpledrm.c +++ b/drivers/gpu/drm/tiny/simpledrm.c @@ -802,6 +802,7 @@ static int simpledrm_probe(struct platform_device *pdev) { struct simpledrm_device *sdev; struct drm_device *dev; + unsigned int color_mode; int ret;sdev = simpledrm_device_create(&simpledrm_driver, pdev);@@ -813,7 +814,11 @@ static int simpledrm_probe(struct platform_device *pdev) if (ret) return ret;- drm_fbdev_generic_setup(dev, drm_format_info_bpp(sdev->format, 0));+ color_mode = drm_format_info_bpp(sdev->format, 0); + if (color_mode == 16) + color_mode = sdev->format->depth; // can be 15 or 16 + + drm_fbdev_generic_setup(dev, color_mode);return 0;}
-- Thomas Zimmermann Graphics Driver Developer SUSE Software Solutions Germany GmbH Maxfeldstr. 5, 90409 Nürnberg, Germany (HRB 36809, AG Nürnberg) Geschäftsführer: Ivo Totev
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