From mboxrd@z Thu Jan 1 00:00:00 1970 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 052FFC88E4C for ; Fri, 11 Sep 2026 09:45:33 +0000 (UTC) Received: from gabe.freedesktop.org (localhost [127.0.0.1]) by gabe.freedesktop.org (Postfix) with ESMTP id 684BB10E389; Fri, 11 Sep 2026 09:45:32 +0000 (UTC) Authentication-Results: gabe.freedesktop.org; dkim=pass (1024-bit key; unprotected) header.d=suse.de header.i=@suse.de header.b="V/A+Lw5u"; dkim=permerror (0-bit key) header.d=suse.de header.i=@suse.de header.b="09n1WuRv"; dkim-atps=neutral Received: from smtp-out2.suse.de (smtp-out2.suse.de [195.135.223.131]) by gabe.freedesktop.org (Postfix) with ESMTPS id 5A64410E389 for ; Fri, 11 Sep 2026 09:45:30 +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 CE2191FF22; Fri, 11 Sep 2026 09:45:24 +0000 (UTC) Authentication-Results: smtp-out2.suse.de; none DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=suse.de; s=susede2_rsa; t=1789119924; h=from:from:reply-to:date:date:message-id:message-id:to:to:cc:cc: mime-version:mime-version: content-transfer-encoding:content-transfer-encoding: in-reply-to:in-reply-to:references:references; bh=z4PHXPBpIJvXQSo3h4iaInbMFWtFG1t8JHS7+nZkGzM=; b=V/A+Lw5uRCKJJJLsm0gdC3aU9JGD0kFc3whd0D0hqjY10MEgS8075KEt41VvSzIdW+xU4I hdlOrJrigqWBnivy6CdGdeJpva6A0HLh29cS1V7Ib9GOSSH1rTbjxiVvVKfhn1NeZWTOUI 8hA+Yod3aXZIJ8RujrUhLYtt3SyxEQY= DKIM-Signature: v=1; a=ed25519-sha256; c=relaxed/relaxed; d=suse.de; s=susede2_ed25519; t=1789119924; h=from:from:reply-to:date:date:message-id:message-id:to:to:cc:cc: mime-version:mime-version: content-transfer-encoding:content-transfer-encoding: in-reply-to:in-reply-to:references:references; bh=z4PHXPBpIJvXQSo3h4iaInbMFWtFG1t8JHS7+nZkGzM=; b=09n1WuRv28LuvnqoW9lSIqZsWh53IqaC/3tlp2slcQ38JN7nYap8w9mwr/c7VtGuArQJQH ipLvAmcY89d3qBAw== 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 43555137CA; Fri, 11 Sep 2026 09:45:24 +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 OAoED7TNo2oFVgAAD6G6ig (envelope-from ); Fri, 11 Sep 2026 09:45:24 +0000 From: Thomas Zimmermann To: deller@gmx.de, gregkh@linuxfoundation.org, jirislaby@kernel.org, simona@ffwll.ch Cc: linux-fbdev@vger.kernel.org, dri-devel@lists.freedesktop.org, linux-serial@vger.kernel.org, sashiko-reviews@lists.linux.dev, Thomas Zimmermann Subject: [PATCH 4/5] lib/fonts: Add font_glyph_cursor() helper Date: Fri, 11 Sep 2026 11:25:22 +0200 Message-ID: <20260911094518.78093-5-tzimmermann@suse.de> X-Mailer: git-send-email 2.55.0 In-Reply-To: <20260911094518.78093-1-tzimmermann@suse.de> References: <20260911094518.78093-1-tzimmermann@suse.de> MIME-Version: 1.0 Content-Transfer-Encoding: 8bit X-Rspamd-Queue-Id: CE2191FF22 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-Spamd-Result: default: False [-4.00 / 50.00]; REPLY(-4.00)[] X-BeenThere: dri-devel@lists.freedesktop.org X-Mailman-Version: 2.1.29 Precedence: list List-Id: Direct Rendering Infrastructure - Development List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Errors-To: dri-devel-bounces@lists.freedesktop.org Sender: "dri-devel" The new helper font_glyph_cursor() fills a glyph with a cursor pattern. As with the font_glyph_rotate_*() helpers, the caller has to provide the output memory. Signed-off-by: Thomas Zimmermann --- include/linux/font.h | 4 +++ lib/fonts/Makefile | 3 ++- lib/fonts/font_cursor.c | 56 +++++++++++++++++++++++++++++++++++++++++ 3 files changed, 62 insertions(+), 1 deletion(-) create mode 100644 lib/fonts/font_cursor.c diff --git a/include/linux/font.h b/include/linux/font.h index 5e1cf9830084..be1a26ff8ae9 100644 --- a/include/linux/font.h +++ b/include/linux/font.h @@ -109,6 +109,10 @@ const unsigned char *font_data_glyph_buf(font_data_t *fd, bool font_data_is_equal(font_data_t *lhs, font_data_t *rhs); int font_data_export(font_data_t *fd, struct console_font *font, unsigned int vpitch); +/* font_cursor.c */ +void font_glyph_cursor(unsigned int width, unsigned int height, + unsigned int from, unsigned int to, unsigned char *out); + /* font_rotate.c */ void font_glyph_rotate_90(const unsigned char *glyph, unsigned int width, unsigned int height, unsigned char *out); diff --git a/lib/fonts/Makefile b/lib/fonts/Makefile index 7202a70a56ef..bc08bf8ea3f8 100644 --- a/lib/fonts/Makefile +++ b/lib/fonts/Makefile @@ -1,7 +1,8 @@ # SPDX-License-Identifier: GPL-2.0 # Font handling -font-y := fonts.o +font-y := fonts.o \ + font_cursor.o font-$(CONFIG_FRAMEBUFFER_CONSOLE_ROTATION) += font_rotate.o # Built-in fonts; sorted by Family-Size in ascending order diff --git a/lib/fonts/font_cursor.c b/lib/fonts/font_cursor.c new file mode 100644 index 000000000000..7f4d587669aa --- /dev/null +++ b/lib/fonts/font_cursor.c @@ -0,0 +1,56 @@ +// SPDX-License-Identifier: GPL-2.0-only + +#include +#include +#include + +#include "font.h" + +/** + * font_glyph_cursor - Create a cursor glyph + * @width: The glyph width in bits per scanline + * @height: The number of scanlines in the glyph + * @start: The first scanline of the cursor block + * @end: The first scanline after the cursor block + * @out: The cursor-glyph bitmap + * + * The parameters @width and @height refer to the glyph size. The caller + * has to provide the output buffer @out of sufficient size to hold the + * cursor glyph. The arguments in @start and @end describe the number of + * scanlines occupied by the cursor block; counting from the top of the + * glyph. The helper fills these scanlines with a pattern and clears the + * remaining scanlines. + */ +void font_glyph_cursor(unsigned int width, unsigned int height, + unsigned int start, unsigned int end, unsigned char *out) +{ + unsigned int pitch = font_glyph_pitch(width); + const unsigned char *out_end = out + height * pitch; + unsigned int size; + + if (WARN_ON_ONCE(start > height)) + start = height; + if (WARN_ON_ONCE(end > height)) + end = height; + + if (end < start) + end = start; + + /* clear scanlines before cursor block */ + size = start * pitch; + memset(out, 0x00, size); + out += size; + + /* set cursor block */ + size = (end - start) * pitch; + memset(out, 0xff, size); + out += size; + + /* clear scanlines below cursor block */ + size = (height - end) * pitch; + memset(out, 0x00, size); + out += size; + + WARN_ON_ONCE(out != out_end); +} +EXPORT_SYMBOL_GPL(font_glyph_cursor); -- 2.55.0