From patchwork Fri Sep 6 07:52:17 2024 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Thomas Zimmermann X-Patchwork-Id: 13793557 Received: from smtp-out2.suse.de (smtp-out2.suse.de [195.135.223.131]) (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 AECF81474B5; Fri, 6 Sep 2024 07:54:44 +0000 (UTC) Authentication-Results: smtp.subspace.kernel.org; arc=none smtp.client-ip=195.135.223.131 ARC-Seal: i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1725609286; cv=none; b=mbq1RJ1lUKs5iyB17Wn93qdIN55/1sPnmb6d4KPyoSjqEPxDBDyKLxMdiy0GtUkDUrKylcJ1vth5SfEx5KBwzKYvHmVrjL+7bE/nYh0vQxqkkizZ9Gc9c4vkyXqeelVr+1FkjpfC/Ex1KhNLt6SzslCP8/9NQWf7SV8l88Ghf94= ARC-Message-Signature: i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1725609286; c=relaxed/simple; bh=P88RX9q64ATLWS6SIoHkBBr8YsEkhzTt00g/88dtDGg=; h=From:To:Cc:Subject:Date:Message-ID:In-Reply-To:References: MIME-Version; b=BXThDJeYU/MzjFYuRGTYEzmw0LrfbrWzLzpHyrUmnoME0ZoIV7cXES/wSn15SdfypmFvP53bz9xAG2NXscsgsApWzTPf6vSf0gmBWG1xzX5wdENWQLbBmT66TsbSirOC1+3i9CHOZ5q97ze5aJGAKBkUmIPwBiYEqLoWA9UoTII= 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=fgFVT3eE; dkim=permerror (0-bit key) header.d=suse.de header.i=@suse.de header.b=4+aKsY8Y; dkim=pass (1024-bit key) header.d=suse.de header.i=@suse.de header.b=fgFVT3eE; dkim=permerror (0-bit key) header.d=suse.de header.i=@suse.de header.b=4+aKsY8Y; arc=none smtp.client-ip=195.135.223.131 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="fgFVT3eE"; dkim=permerror (0-bit key) header.d=suse.de header.i=@suse.de header.b="4+aKsY8Y"; dkim=pass (1024-bit key) header.d=suse.de header.i=@suse.de header.b="fgFVT3eE"; dkim=permerror (0-bit key) header.d=suse.de header.i=@suse.de header.b="4+aKsY8Y" 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-out2.suse.de (Postfix) with ESMTPS id 0EF991F898; Fri, 6 Sep 2024 07:54:43 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=suse.de; s=susede2_rsa; t=1725609283; 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=ftRRQ6IbvpJtnLvzzzWRpEaf4+NcjnL4e5P5Wq0PMo4=; b=fgFVT3eEmUZ7tHh/SvXRCvZ2v+lQUzKVxk4BOXN0YkAtNSZp8Kx7pDdsQqb6bghL7bJpr9 5LvfrenUjb8qY4qoUzYlqYVIqZ1avU0iADhWUItUTfuAYj/XLbMLiA0zkuuvHKqfFmzMG9 ZWN0KIggGAvge03R2gJcnKREfIPhJsk= DKIM-Signature: v=1; a=ed25519-sha256; c=relaxed/relaxed; d=suse.de; s=susede2_ed25519; t=1725609283; 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=ftRRQ6IbvpJtnLvzzzWRpEaf4+NcjnL4e5P5Wq0PMo4=; b=4+aKsY8YyWIE4GC6a62AzJI2dPHBOTcJDJq16xmoeL5Qb/9O/Jx+X7eP4Pxpb1d38L/SJQ G0DFF+6L3xCHLmAQ== Authentication-Results: smtp-out2.suse.de; none DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=suse.de; s=susede2_rsa; t=1725609283; 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=ftRRQ6IbvpJtnLvzzzWRpEaf4+NcjnL4e5P5Wq0PMo4=; b=fgFVT3eEmUZ7tHh/SvXRCvZ2v+lQUzKVxk4BOXN0YkAtNSZp8Kx7pDdsQqb6bghL7bJpr9 5LvfrenUjb8qY4qoUzYlqYVIqZ1avU0iADhWUItUTfuAYj/XLbMLiA0zkuuvHKqfFmzMG9 ZWN0KIggGAvge03R2gJcnKREfIPhJsk= DKIM-Signature: v=1; a=ed25519-sha256; c=relaxed/relaxed; d=suse.de; s=susede2_ed25519; t=1725609283; 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=ftRRQ6IbvpJtnLvzzzWRpEaf4+NcjnL4e5P5Wq0PMo4=; b=4+aKsY8YyWIE4GC6a62AzJI2dPHBOTcJDJq16xmoeL5Qb/9O/Jx+X7eP4Pxpb1d38L/SJQ G0DFF+6L3xCHLmAQ== 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 A420D13A7A; 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 sK9qJkK12mbGPAAAD6G6ig (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 03/28] backlight: lcd: Add LCD_POWER_ constants for power states Date: Fri, 6 Sep 2024 09:52:17 +0200 Message-ID: <20240906075439.98476-4-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)[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: Duplicate FB_BLANK_ constants as LCD_POWER_ constants in the lcd header file. Allows lcd drivers to avoid including the fbdev header file and removes a compile-time dependency between the two subsystems. The new LCD_POWER_ constants have the same values as their FB_BLANK_ counterparts. Hence semantics does not change and the lcd drivers can be converted one by one. Each instance of FB_BLANK_UNBLANK becomes LCD_POWER_ON, each of FB_BLANK_POWERDOWN becomes LCD_POWER_OFF, FB_BLANK_NORMAL becomes LCD_POWER_REDUCED and FB_BLANK_VSYNC_SUSPEND becomes LCD_POWER_REDUCED_VSYNC_SUSPEND. Lcd code or drivers do not use FB_BLANK_HSYNC_SUSPEND, so no new constants for this is being added. The tokens LCD_POWER_REDUCED and LCD_POWER_REDUCED_VSYNC_SUSPEND are deprecated and drivers should replace them with LCD_POWER_ON and LCD_POWER_OFF. See also commit a1cacb8a8e70 ("backlight: Add BACKLIGHT_POWER_ constants for power states"), which added similar constants for backlight drivers. v2: - fix typo in commit description Signed-off-by: Thomas Zimmermann Reviewed-by: Daniel Thompson --- drivers/video/backlight/lcd.c | 22 +++++++++++++++++++++- include/linux/lcd.h | 5 +++++ 2 files changed, 26 insertions(+), 1 deletion(-) diff --git a/drivers/video/backlight/lcd.c b/drivers/video/backlight/lcd.c index c69407aed296..713f7fb8b10a 100644 --- a/drivers/video/backlight/lcd.c +++ b/drivers/video/backlight/lcd.c @@ -20,6 +20,24 @@ #if defined(CONFIG_FB) || (defined(CONFIG_FB_MODULE) && \ defined(CONFIG_LCD_CLASS_DEVICE_MODULE)) +static int to_lcd_power(int fb_blank) +{ + switch (fb_blank) { + case FB_BLANK_UNBLANK: + return LCD_POWER_ON; + /* deprecated; TODO: should become 'off' */ + case FB_BLANK_NORMAL: + return LCD_POWER_REDUCED; + case FB_BLANK_VSYNC_SUSPEND: + return LCD_POWER_REDUCED_VSYNC_SUSPEND; + /* 'off' */ + case FB_BLANK_HSYNC_SUSPEND: + case FB_BLANK_POWERDOWN: + default: + return LCD_POWER_OFF; + } +} + /* This callback gets called when something important happens inside a * framebuffer driver. We're looking if that important event is blanking, * and if it is, we're switching lcd power as well ... @@ -42,8 +60,10 @@ static int fb_notifier_callback(struct notifier_block *self, return 0; if (event == FB_EVENT_BLANK) { + int power = to_lcd_power(*(int *)evdata->data); + if (ld->ops->set_power) - ld->ops->set_power(ld, *(int *)evdata->data); + ld->ops->set_power(ld, power); } else { if (ld->ops->set_mode) ld->ops->set_mode(ld, evdata->data); diff --git a/include/linux/lcd.h b/include/linux/lcd.h index 68703a51dc53..dfcc54d327f5 100644 --- a/include/linux/lcd.h +++ b/include/linux/lcd.h @@ -14,6 +14,11 @@ #include #include +#define LCD_POWER_ON (0) +#define LCD_POWER_REDUCED (1) // deprecated; don't use in new code +#define LCD_POWER_REDUCED_VSYNC_SUSPEND (2) // deprecated; don't use in new code +#define LCD_POWER_OFF (4) + /* Notes on locking: * * lcd_device->ops_lock is an internal backlight lock protecting the ops