From patchwork Wed Feb 26 09:31:52 2025 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Thomas Zimmermann X-Patchwork-Id: 13991862 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 25C5B238176 for ; Wed, 26 Feb 2025 09:38:05 +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=1740562686; cv=none; b=gITzbFHqwXRv4JFFvcClSrFmLgtoxfwi0xAYKw0Vor17/Tw+swBeYyNUFaKgojZbMooCGkHwXRjEIiGBGKhDcTAiZjoeUvHjcO2BtLZgbAfZE0RHDQo2ZbcgrwvRG44gA86eZhiYqyo2DjtSB7vlAyqf3w1AOzHZ8zUvHQE9BGE= ARC-Message-Signature: i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1740562686; c=relaxed/simple; bh=KHUA6zoaPMlvYn6h6tjDE4dEHKvvRy1I2RIJD3pBxdA=; h=From:To:Cc:Subject:Date:Message-ID:In-Reply-To:References: MIME-Version; b=Y00/3GuN0IrT7MtHz4e4U3PAUwlQSFWc/qCtrQixmeIM2AKBqCRgPbXRnLY5uFrgsyUCCrb2LZTfp+zMO7u20XdOPKc6Pp6Zmpd4ibDrDe22npDyAESvfEFE2i8IsrYeswE4JGbskWbi9wEes0mqGoQBA62zdoUA8AR1A8QHQWI= 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; 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 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 10E611F460; Wed, 26 Feb 2025 09:37:46 +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 BC8E013A82; Wed, 26 Feb 2025 09:37:45 +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 6Ky7LOngvmezXQAAD6G6ig (envelope-from ); Wed, 26 Feb 2025 09:37:45 +0000 From: Thomas Zimmermann To: lee@kernel.org, pavel@ucw.cz, danielt@kernel.org, jingoohan1@gmail.com, deller@gmx.de, simona@ffwll.ch Cc: linux-leds@vger.kernel.org, dri-devel@lists.freedesktop.org, linux-fbdev@vger.kernel.org, Thomas Zimmermann Subject: [PATCH v2 03/11] fbdev: Send old blank state in FB_EVENT_BLANK Date: Wed, 26 Feb 2025 10:31:52 +0100 Message-ID: <20250226093456.147402-4-tzimmermann@suse.de> X-Mailer: git-send-email 2.48.1 In-Reply-To: <20250226093456.147402-1-tzimmermann@suse.de> References: <20250226093456.147402-1-tzimmermann@suse.de> Precedence: bulk X-Mailing-List: linux-fbdev@vger.kernel.org List-Id: List-Subscribe: List-Unsubscribe: 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)[] X-Spam-Flag: NO X-Spam-Score: -4.00 X-Rspamd-Queue-Id: 10E611F460 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-Spam-Level: The event FB_EVENT_BLANK sends the new blank state in the event's data field. Also send the old state. It's an additional field in the data array; existing receivers won't notice the difference. The backlight subsystem currently tracks blank state per display per backlight. That is not optimal as it ties backlight code to fbdev. A subsystem should not track internal state of another subsystem. With both, new and old, blank state in FB_EVENT_BLANK, the backlight code will not require its own state tracker any longer. Signed-off-by: Thomas Zimmermann --- drivers/video/fbdev/core/fbmem.c | 5 ++++- 1 file changed, 4 insertions(+), 1 deletion(-) diff --git a/drivers/video/fbdev/core/fbmem.c b/drivers/video/fbdev/core/fbmem.c index 5d1529d300b7..9650b641d8e8 100644 --- a/drivers/video/fbdev/core/fbmem.c +++ b/drivers/video/fbdev/core/fbmem.c @@ -343,6 +343,7 @@ int fb_blank(struct fb_info *info, int blank) { int old_blank = info->blank; struct fb_event event; + int data[2]; int ret; if (!info->fbops->fb_blank) @@ -351,8 +352,10 @@ int fb_blank(struct fb_info *info, int blank) if (blank > FB_BLANK_POWERDOWN) blank = FB_BLANK_POWERDOWN; + data[0] = blank; + data[1] = old_blank; event.info = info; - event.data = ␣ + event.data = data; info->blank = blank;