From: Thomas Zimmermann Date: Fri, 6 Jan 2023 11:23:24 +0000 (+0100) Subject: drm/fb-helper: Replace bpp/depth parameter by color mode X-Git-Tag: v6.6.7~1918^2~23^2~1052 X-Git-Url: http://review.tizen.org/git/?a=commitdiff_plain;h=d3533a8af48479a1af1a8fa7fcb0e5161398c94e;p=platform%2Fkernel%2Flinux-starfive.git drm/fb-helper: Replace bpp/depth parameter by color mode 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 Tested-by: Maíra Canal # vc4 and vkms Acked-by: Daniel Vetter Fixes: 37c90d589dc0 ("drm/fb-helper: Fix single-probe color-format selection") Cc: Thomas Zimmermann Cc: Javier Martinez Canillas Cc: Maarten Lankhorst Cc: Maxime Ripard Link: https://patchwork.freedesktop.org/patch/msgid/20230106112324.22055-1-tzimmermann@suse.de --- diff --git a/drivers/gpu/drm/drm_fb_helper.c b/drivers/gpu/drm/drm_fb_helper.c index 1369ca4..4276317 100644 --- a/drivers/gpu/drm/drm_fb_helper.c +++ b/drivers/gpu/drm/drm_fb_helper.c @@ -1756,24 +1756,21 @@ err: 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 prefe drm_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 39c5fd4..6e349ca 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 7355617..f658b99 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; }