From patchwork Fri Aug 30 08:39:45 2024 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Thomas Zimmermann X-Patchwork-Id: 13784636 Return-Path: X-Spam-Checker-Version: SpamAssassin 3.4.0 (2014-02-07) on aws-us-west-2-korg-lkml-1.web.codeaurora.org Received: from gabe.freedesktop.org (gabe.freedesktop.org [131.252.210.177]) (using TLSv1.2 with cipher ECDHE-RSA-AES256-GCM-SHA384 (256/256 bits)) (No client certificate requested) by smtp.lore.kernel.org (Postfix) with ESMTPS id 4A985CA0EF7 for ; Fri, 30 Aug 2024 08:45:03 +0000 (UTC) Received: from gabe.freedesktop.org (localhost [127.0.0.1]) by gabe.freedesktop.org (Postfix) with ESMTP id F13BE10E85E; Fri, 30 Aug 2024 08:45:01 +0000 (UTC) Received: from smtp-out2.suse.de (smtp-out2.suse.de [195.135.223.131]) by gabe.freedesktop.org (Postfix) with ESMTPS id B05A910E85E; Fri, 30 Aug 2024 08:45:00 +0000 (UTC) Received: from imap1.dmz-prg2.suse.org (imap1.dmz-prg2.suse.org [IPv6:2a07:de40:b281:104:10:150:64:97]) (using TLSv1.3 with cipher TLS_AES_256_GCM_SHA384 (256/256 bits) key-exchange X25519 server-signature RSA-PSS (4096 bits) server-digest SHA256) (No client certificate requested) by smtp-out2.suse.de (Postfix) with ESMTPS id 6E1961F7B6; Fri, 30 Aug 2024 08:44:59 +0000 (UTC) Authentication-Results: smtp-out2.suse.de; none Received: from imap1.dmz-prg2.suse.org (localhost [127.0.0.1]) (using TLSv1.3 with cipher TLS_AES_256_GCM_SHA384 (256/256 bits) key-exchange X25519 server-signature RSA-PSS (4096 bits) server-digest SHA256) (No client certificate requested) by imap1.dmz-prg2.suse.org (Postfix) with ESMTPS id 22B2313A66; Fri, 30 Aug 2024 08:44:59 +0000 (UTC) Received: from dovecot-director2.suse.de ([2a07:de40:b281:106:10:150:64:167]) by imap1.dmz-prg2.suse.org with ESMTPSA id UEIqB4uG0WbyegAAD6G6ig (envelope-from ); Fri, 30 Aug 2024 08:44:59 +0000 From: Thomas Zimmermann To: daniel@ffwll.ch, airlied@gmail.com, jfalempe@redhat.com, javierm@redhat.com Cc: dri-devel@lists.freedesktop.org, amd-gfx@lists.freedesktop.org, intel-gfx@lists.freedesktop.org, intel-xe@lists.freedesktop.org, nouveau@lists.freedesktop.org, Thomas Zimmermann , Laurent Pinchart Subject: [PATCH v3 01/81] drm/fbdev-helper: Move color-mode lookup into 4CC format helper Date: Fri, 30 Aug 2024 10:39:45 +0200 Message-ID: <20240830084456.77630-2-tzimmermann@suse.de> X-Mailer: git-send-email 2.46.0 In-Reply-To: <20240830084456.77630-1-tzimmermann@suse.de> References: <20240830084456.77630-1-tzimmermann@suse.de> MIME-Version: 1.0 X-Rspamd-Pre-Result: action=no action; module=replies; Message is reply to one we originated X-Spamd-Result: default: False [-4.00 / 50.00]; REPLY(-4.00)[]; TAGGED_RCPT(0.00)[renesas] X-Rspamd-Queue-Id: 6E1961F7B6 X-Rspamd-Pre-Result: action=no action; module=replies; Message is reply to one we originated X-Rspamd-Action: no action X-Rspamd-Server: rspamd1.dmz-prg2.suse.org X-BeenThere: intel-gfx@lists.freedesktop.org X-Mailman-Version: 2.1.29 Precedence: list List-Id: Intel graphics driver community testing & development List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Errors-To: intel-gfx-bounces@lists.freedesktop.org Sender: "Intel-gfx" The color mode as specified on the kernel command line gives the user's preferred color depth and number of bits per pixel. Move the color-mode-to-format conversion from fbdev helpers into a 4CC helper, so that it can be shared among DRM clients. v2: - fix grammar in commit message (Laurent) Signed-off-by: Thomas Zimmermann Reviewed-by: Laurent Pinchart --- drivers/gpu/drm/drm_fb_helper.c | 70 +++++++-------------------------- drivers/gpu/drm/drm_fourcc.c | 30 +++++++++++++- include/drm/drm_fourcc.h | 1 + 3 files changed, 45 insertions(+), 56 deletions(-) diff --git a/drivers/gpu/drm/drm_fb_helper.c b/drivers/gpu/drm/drm_fb_helper.c index 29c53f9f449c..af1fe79c701d 100644 --- a/drivers/gpu/drm/drm_fb_helper.c +++ b/drivers/gpu/drm/drm_fb_helper.c @@ -1441,67 +1441,27 @@ int drm_fb_helper_pan_display(struct fb_var_screeninfo *var, EXPORT_SYMBOL(drm_fb_helper_pan_display); static uint32_t drm_fb_helper_find_format(struct drm_fb_helper *fb_helper, const uint32_t *formats, - size_t format_count, uint32_t bpp, uint32_t depth) + size_t format_count, unsigned int color_mode) { struct drm_device *dev = fb_helper->dev; uint32_t format; size_t i; - /* - * Do not consider YUV or other complicated formats - * for framebuffers. This means only legacy formats - * are supported (fmt->depth is a legacy field), but - * the framebuffer emulation can only deal with such - * formats, specifically RGB/BGA formats. - */ - format = drm_mode_legacy_fb_format(bpp, depth); - if (!format) - goto err; + format = drm_driver_color_mode_format(dev, color_mode); + if (!format) { + drm_info(dev, "unsupported color mode of %d\n", color_mode); + return DRM_FORMAT_INVALID; + } for (i = 0; i < format_count; ++i) { if (formats[i] == format) return format; } - -err: - /* We found nothing. */ - drm_warn(dev, "bpp/depth value of %u/%u not supported\n", bpp, depth); + drm_warn(dev, "format %p4cc not supported\n", &format); return DRM_FORMAT_INVALID; } -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; - - switch (color_mode) { - case 1: - case 2: - case 4: - case 8: - case 16: - case 24: - bpp = depth = color_mode; - break; - case 15: - bpp = 16; - depth = 15; - break; - case 32: - bpp = 32; - depth = 24; - break; - default: - drm_info(dev, "unsupported color mode of %d\n", color_mode); - return DRM_FORMAT_INVALID; - } - - return drm_fb_helper_find_format(fb_helper, formats, format_count, bpp, depth); -} - static int __drm_fb_helper_find_sizes(struct drm_fb_helper *fb_helper, struct drm_fb_helper_surface_size *sizes) { @@ -1531,10 +1491,10 @@ static int __drm_fb_helper_find_sizes(struct drm_fb_helper *fb_helper, 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); + surface_format = drm_fb_helper_find_format(fb_helper, + plane->format_types, + plane->format_count, + cmdline_mode->bpp); if (surface_format != DRM_FORMAT_INVALID) break; /* found supported format */ } @@ -1544,10 +1504,10 @@ static int __drm_fb_helper_find_sizes(struct drm_fb_helper *fb_helper, break; /* found supported format */ /* try preferred color mode */ - surface_format = drm_fb_helper_find_color_mode_format(fb_helper, - plane->format_types, - plane->format_count, - fb_helper->preferred_bpp); + surface_format = drm_fb_helper_find_format(fb_helper, + plane->format_types, + plane->format_count, + fb_helper->preferred_bpp); if (surface_format != DRM_FORMAT_INVALID) break; /* found supported format */ } diff --git a/drivers/gpu/drm/drm_fourcc.c b/drivers/gpu/drm/drm_fourcc.c index 193cf8ed7912..3a94ca211f9c 100644 --- a/drivers/gpu/drm/drm_fourcc.c +++ b/drivers/gpu/drm/drm_fourcc.c @@ -36,7 +36,6 @@ * @depth: bit depth per pixel * * Computes a drm fourcc pixel format code for the given @bpp/@depth values. - * Useful in fbdev emulation code, since that deals in those values. */ uint32_t drm_mode_legacy_fb_format(uint32_t bpp, uint32_t depth) { @@ -140,6 +139,35 @@ uint32_t drm_driver_legacy_fb_format(struct drm_device *dev, } EXPORT_SYMBOL(drm_driver_legacy_fb_format); +/** + * drm_driver_color_mode_format - Compute DRM 4CC code from color mode + * @dev: DRM device + * @color_mode: command-line color mode + * + * Computes a DRM 4CC pixel format code for the given color mode using + * drm_driver_color_mode(). The color mode is in the format used and the + * kernel command line. It specifies the number of bits per pixel + * and color depth in a single value. + * + * Useful in fbdev emulation code, since that deals in those values. The + * helper does not consider YUV or other complicated formats. This means + * only legacy formats are supported (fmt->depth is a legacy field), but + * the framebuffer emulation can only deal with such formats, specifically + * RGB/BGA formats. + */ +uint32_t drm_driver_color_mode_format(struct drm_device *dev, unsigned int color_mode) +{ + switch (color_mode) { + case 15: + return drm_driver_legacy_fb_format(dev, 16, 15); + case 32: + return drm_driver_legacy_fb_format(dev, 32, 24); + default: + return drm_driver_legacy_fb_format(dev, color_mode, color_mode); + } +} +EXPORT_SYMBOL(drm_driver_color_mode_format); + /* * Internal function to query information for a given format. See * drm_format_info() for the public API. diff --git a/include/drm/drm_fourcc.h b/include/drm/drm_fourcc.h index ccf91daa4307..c3f4405d6662 100644 --- a/include/drm/drm_fourcc.h +++ b/include/drm/drm_fourcc.h @@ -313,6 +313,7 @@ drm_get_format_info(struct drm_device *dev, uint32_t drm_mode_legacy_fb_format(uint32_t bpp, uint32_t depth); uint32_t drm_driver_legacy_fb_format(struct drm_device *dev, uint32_t bpp, uint32_t depth); +uint32_t drm_driver_color_mode_format(struct drm_device *dev, unsigned int color_mode); unsigned int drm_format_info_block_width(const struct drm_format_info *info, int plane); unsigned int drm_format_info_block_height(const struct drm_format_info *info,