From patchwork Fri Sep 6 07:52:16 2024 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Thomas Zimmermann X-Patchwork-Id: 826389 Received: from smtp-out1.suse.de (smtp-out1.suse.de [195.135.223.130]) (using TLSv1.2 with cipher ECDHE-RSA-AES128-GCM-SHA256 (128/128 bits)) (No client certificate requested) by smtp.subspace.kernel.org (Postfix) with ESMTPS id 597B614A4E2; Fri, 6 Sep 2024 07:54:44 +0000 (UTC) Authentication-Results: smtp.subspace.kernel.org; arc=none smtp.client-ip=195.135.223.130 ARC-Seal: i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1725609286; cv=none; b=QKnhBgAYB6ftNwrOXbn/dT/g89SbAF1Fem9bR61CTJpV3FTIIVjRqDTKHkW/t3j+W6h5JJwpx0JTAa8rvJqFF7HOyZbGDqoNty+6sHc5HqI8YFCYZuIBQsspLBNlYsnUIx/2GT1ewZ8of5DzwPog9NKDL+5TtAOoADPPQ+o9AwM= ARC-Message-Signature: i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1725609286; c=relaxed/simple; bh=4htfgud9qjzDuRew3rHmo3MTmJVDV6Vavlipa0djvQg=; h=From:To:Cc:Subject:Date:Message-ID:In-Reply-To:References: MIME-Version; b=pljwF3cWUypVzFad9sf4f4F6Xv85CECBeRkGczdBu8ZpS8wqYd3u6Z4a3/xHR8gsltsTYrPP11uL7/UqoLo2uVMDGfPEizC1PvLI+s+bLzfhZaj3gzg26wbTaWMvvJfpQN7jFzUcxzWtzrxhTtpt4FUQAER35cPaLo+nCOqKlDw= ARC-Authentication-Results: i=1; smtp.subspace.kernel.org; dmarc=pass (p=none dis=none) header.from=suse.de; spf=pass smtp.mailfrom=suse.de; dkim=pass (1024-bit key) header.d=suse.de header.i=@suse.de header.b=jVbItLEt; dkim=permerror (0-bit key) header.d=suse.de header.i=@suse.de header.b=DQxfLG/m; dkim=pass (1024-bit key) header.d=suse.de header.i=@suse.de header.b=jVbItLEt; dkim=permerror (0-bit key) header.d=suse.de header.i=@suse.de header.b=DQxfLG/m; arc=none smtp.client-ip=195.135.223.130 Authentication-Results: smtp.subspace.kernel.org; dmarc=pass (p=none dis=none) header.from=suse.de Authentication-Results: smtp.subspace.kernel.org; spf=pass smtp.mailfrom=suse.de Authentication-Results: smtp.subspace.kernel.org; dkim=pass (1024-bit key) header.d=suse.de header.i=@suse.de header.b="jVbItLEt"; dkim=permerror (0-bit key) header.d=suse.de header.i=@suse.de header.b="DQxfLG/m"; dkim=pass (1024-bit key) header.d=suse.de header.i=@suse.de header.b="jVbItLEt"; dkim=permerror (0-bit key) header.d=suse.de header.i=@suse.de header.b="DQxfLG/m" Received: from imap1.dmz-prg2.suse.org (unknown [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-out1.suse.de (Postfix) with ESMTPS id 9C36021AAC; Fri, 6 Sep 2024 07:54:42 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=suse.de; s=susede2_rsa; t=1725609282; 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=m0OL/1DGIzFI3eeSHil7+LVlCkFCWkI3H7K0ymxchyc=; b=jVbItLEtc/USktcGH/NqUQXcOB+bobtd7iyZzNThC2q6M6UeP9EjzMlelcX8LPjU5m8/Mq fAQOonickQzBWHEwvR0T1PllZg4IJPauVHSCYsanCLtJEnOyiI8Lu2S9shTijDBmfTfmjF GcyWAS4Zjhj6mzoi15KZ/TkzbPRIJ9I= DKIM-Signature: v=1; a=ed25519-sha256; c=relaxed/relaxed; d=suse.de; s=susede2_ed25519; t=1725609282; 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=m0OL/1DGIzFI3eeSHil7+LVlCkFCWkI3H7K0ymxchyc=; b=DQxfLG/m9JuyI4xJw3m2SKBCDdEYy1T6EURH4T3Yi8mRnGUjU9zMRk44JP/sXRzdxF4uD2 qsV/d2Yx5LysixBg== Authentication-Results: smtp-out1.suse.de; none DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=suse.de; s=susede2_rsa; t=1725609282; 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=m0OL/1DGIzFI3eeSHil7+LVlCkFCWkI3H7K0ymxchyc=; b=jVbItLEtc/USktcGH/NqUQXcOB+bobtd7iyZzNThC2q6M6UeP9EjzMlelcX8LPjU5m8/Mq fAQOonickQzBWHEwvR0T1PllZg4IJPauVHSCYsanCLtJEnOyiI8Lu2S9shTijDBmfTfmjF GcyWAS4Zjhj6mzoi15KZ/TkzbPRIJ9I= DKIM-Signature: v=1; a=ed25519-sha256; c=relaxed/relaxed; d=suse.de; s=susede2_ed25519; t=1725609282; 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=m0OL/1DGIzFI3eeSHil7+LVlCkFCWkI3H7K0ymxchyc=; b=DQxfLG/m9JuyI4xJw3m2SKBCDdEYy1T6EURH4T3Yi8mRnGUjU9zMRk44JP/sXRzdxF4uD2 qsV/d2Yx5LysixBg== 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 3BD44136A8; Fri, 6 Sep 2024 07:54:42 +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 +ExTDUK12mbGPAAAD6G6ig (envelope-from ); Fri, 06 Sep 2024 07:54:42 +0000 From: Thomas Zimmermann To: lee@kernel.org, daniel.thompson@linaro.org, jingoohan1@gmail.com, deller@gmx.de, bonbons@linux-vserver.org, jikos@kernel.org, bentiss@kernel.org, s.hauer@pengutronix.de, kernel@pengutronix.de, shawnguo@kernel.org, festevam@gmail.com Cc: dri-devel@lists.freedesktop.org, linux-fbdev@vger.kernel.org, linux-omap@vger.kernel.org, Thomas Zimmermann Subject: [PATCH v2 02/28] backlight: lcd: Test against struct fb_info.lcd_dev Date: Fri, 6 Sep 2024 09:52:16 +0200 Message-ID: <20240906075439.98476-3-tzimmermann@suse.de> X-Mailer: git-send-email 2.46.0 In-Reply-To: <20240906075439.98476-1-tzimmermann@suse.de> References: <20240906075439.98476-1-tzimmermann@suse.de> Precedence: bulk X-Mailing-List: linux-omap@vger.kernel.org List-Id: List-Subscribe: List-Unsubscribe: MIME-Version: 1.0 X-Spam-Score: -6.80 X-Spamd-Result: default: False [-6.80 / 50.00]; REPLY(-4.00)[]; BAYES_HAM(-3.00)[100.00%]; MID_CONTAINS_FROM(1.00)[]; NEURAL_HAM_LONG(-1.00)[-1.000]; R_MISSING_CHARSET(0.50)[]; NEURAL_HAM_SHORT(-0.20)[-1.000]; MIME_GOOD(-0.10)[text/plain]; ARC_NA(0.00)[]; RCVD_VIA_SMTP_AUTH(0.00)[]; DBL_BLOCKED_OPENRESOLVER(0.00)[suse.de:mid,suse.de:email,imap1.dmz-prg2.suse.org:helo]; RCPT_COUNT_TWELVE(0.00)[15]; MIME_TRACE(0.00)[0:+]; TO_DN_SOME(0.00)[]; FROM_HAS_DN(0.00)[]; FREEMAIL_TO(0.00)[kernel.org,linaro.org,gmail.com,gmx.de,linux-vserver.org,pengutronix.de]; FROM_EQ_ENVFROM(0.00)[]; RCVD_COUNT_TWO(0.00)[2]; TO_MATCH_ENVRCPT_ALL(0.00)[]; RCVD_TLS_ALL(0.00)[]; FUZZY_BLOCKED(0.00)[rspamd.com]; R_RATELIMIT(0.00)[to_ip_from(RL7eb4yoy35resap1sns3bbybe)]; DKIM_SIGNED(0.00)[suse.de:s=susede2_rsa,suse.de:s=susede2_ed25519]; FREEMAIL_ENVRCPT(0.00)[gmail.com,gmx.de] X-Spam-Flag: NO X-Spam-Level: Add struct fb_info.lcd_dev for fbdev drivers to store a reference to their lcd device. Update the lcd's fb_notifier_callback() to test for this field. The lcd module can now detect if an lcd device belongs to an fbdev device. This works similar to the bl_dev for backlights and will allow for the removal of the check_fb callback from several fbdev driver's lcd devices. Signed-off-by: Thomas Zimmermann Reviewed-by: Daniel Thompson --- drivers/video/backlight/lcd.c | 3 +++ include/linux/fb.h | 13 +++++++++++++ 2 files changed, 16 insertions(+) diff --git a/drivers/video/backlight/lcd.c b/drivers/video/backlight/lcd.c index 2f57d6867d42..c69407aed296 100644 --- a/drivers/video/backlight/lcd.c +++ b/drivers/video/backlight/lcd.c @@ -30,6 +30,7 @@ static int fb_notifier_callback(struct notifier_block *self, struct lcd_device *ld = container_of(self, struct lcd_device, fb_notif); struct fb_event *evdata = data; struct fb_info *info = evdata->info; + struct lcd_device *fb_lcd = fb_lcd_device(info); guard(mutex)(&ld->ops_lock); @@ -37,6 +38,8 @@ static int fb_notifier_callback(struct notifier_block *self, return 0; if (ld->ops->check_fb && !ld->ops->check_fb(ld, info)) return 0; + if (fb_lcd && fb_lcd != ld) + return 0; if (event == FB_EVENT_BLANK) { if (ld->ops->set_power) diff --git a/include/linux/fb.h b/include/linux/fb.h index 865dad03e73e..bf1893616e9c 100644 --- a/include/linux/fb.h +++ b/include/linux/fb.h @@ -21,6 +21,7 @@ struct fb_info; struct file; struct i2c_adapter; struct inode; +struct lcd_device; struct module; struct notifier_block; struct page; @@ -480,6 +481,13 @@ struct fb_info { struct mutex bl_curve_mutex; u8 bl_curve[FB_BACKLIGHT_LEVELS]; #endif + + /* + * Assigned LCD device; set before framebuffer + * registration, remove after unregister + */ + struct lcd_device *lcd_dev; + #ifdef CONFIG_FB_DEFERRED_IO struct delayed_work deferred_work; unsigned long npagerefs; @@ -753,6 +761,11 @@ static inline struct backlight_device *fb_bl_device(struct fb_info *info) } #endif +static inline struct lcd_device *fb_lcd_device(struct fb_info *info) +{ + return info->lcd_dev; +} + /* fbmon.c */ #define FB_MAXTIMINGS 0 #define FB_VSYNCTIMINGS 1