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 X-Spam-Level: X-Spam-Status: No, score=-9.1 required=3.0 tests=DKIM_SIGNED,DKIM_VALID, DKIM_VALID_AU,HEADER_FROM_DIFFERENT_DOMAINS,INCLUDES_PATCH,MAILING_LIST_MULTI, SIGNED_OFF_BY,SPF_HELO_NONE,SPF_PASS,URIBL_BLOCKED,USER_AGENT_GIT autolearn=ham autolearn_force=no version=3.4.0 Received: from mail.kernel.org (mail.kernel.org [198.145.29.99]) by smtp.lore.kernel.org (Postfix) with ESMTP id 1DF8FC04AB6 for ; Tue, 28 May 2019 09:03:36 +0000 (UTC) Received: from vger.kernel.org (vger.kernel.org [209.132.180.67]) by mail.kernel.org (Postfix) with ESMTP id D31662075C for ; Tue, 28 May 2019 09:03:35 +0000 (UTC) Authentication-Results: mail.kernel.org; dkim=pass (1024-bit key) header.d=ffwll.ch header.i=@ffwll.ch header.b="YwRF4P97" Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1727066AbfE1JDf (ORCPT ); Tue, 28 May 2019 05:03:35 -0400 Received: from mail-ed1-f68.google.com ([209.85.208.68]:41988 "EHLO mail-ed1-f68.google.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1726974AbfE1JDb (ORCPT ); Tue, 28 May 2019 05:03:31 -0400 Received: by mail-ed1-f68.google.com with SMTP id g24so2698486eds.9 for ; Tue, 28 May 2019 02:03:29 -0700 (PDT) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=ffwll.ch; s=google; h=from:to:cc:subject:date:message-id:in-reply-to:references :mime-version:content-transfer-encoding; bh=UVMz2IJ4/RyaqNE4ZvaPs86LwJMcSiemc8l514rOxoE=; b=YwRF4P97LOBFhUta0OKI5wlSv1Ox7DssXRuK+2PmuzP3Bb2FNwARl2akdmKCZyXlht lHNH4diyj6fBWHpDeH4K0gYOQYM0gek4oMHoK34CxS4WpKKsdP2bhwltVDvw34z8ct3A BwBi6OjIWHKaCQP3HMqUL0tNKRaKaadMkDaxA= X-Google-DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=1e100.net; s=20161025; h=x-gm-message-state:from:to:cc:subject:date:message-id:in-reply-to :references:mime-version:content-transfer-encoding; bh=UVMz2IJ4/RyaqNE4ZvaPs86LwJMcSiemc8l514rOxoE=; b=FVfbRY4L6XReLKFZzzgSThQ2d7qX6SuDpUtmKkN9jh+Q44N7UH00aor8YJxfIzLC26 m5OUZ06hQAVfv2DwKMozSAuZBtcng3e0MdGsz9jGcBIZNBJ6scWIwUhrSou6/i1wtTmh BopIx9WT3lRkvdogKiNnma5uNckZInFYG9eXJ7kx5n2cEER8bKjAfrXrtdXrm9YxQsXx E6ZL1p3Fj9QVTe6S5eVsVHm9w3FZUWoHjAGgcmjnyHUHUdqUJltclcRXArDA80Cx3Acw uad8CdAZPSB9shl/+Kx5PPyqMXz6yD4Hjxh5ZokRZBoFFaoj8ZVrMcOtmrmU1DajIBru puww== X-Gm-Message-State: APjAAAUvtc1Bh0bZcGJbY45elg0T+IEeCatd0oEjZdPvo561iLSxBaGM 2lFA8ncQJcMelxqll2/GNHrgvoRI5s0= X-Google-Smtp-Source: APXvYqzzJazZYKbqsmGP/BM9TTGVXR1j+0xbyiZYi+o+JaVEFP6ppO34Lw/fLHCAVJ+XHdehH4WMbA== X-Received: by 2002:a50:be42:: with SMTP id b2mr129139954edi.228.1559034206926; Tue, 28 May 2019 02:03:26 -0700 (PDT) Received: from phenom.ffwll.local ([2a02:168:569e:0:3106:d637:d723:e855]) by smtp.gmail.com with ESMTPSA id x49sm4072656edm.25.2019.05.28.02.03.25 (version=TLS1_2 cipher=ECDHE-RSA-AES128-GCM-SHA256 bits=128/128); Tue, 28 May 2019 02:03:26 -0700 (PDT) From: Daniel Vetter To: LKML Cc: DRI Development , Intel Graphics Development , linux-fbdev@vger.kernel.org, Daniel Thompson , Bartlomiej Zolnierkiewicz , Daniel Vetter , Daniel Vetter , Sam Ravnborg , Maarten Lankhorst , Hans de Goede , Greg Kroah-Hartman , =?UTF-8?q?Noralf=20Tr=C3=B8nnes?= , Yisheng Xie , Peter Rosin , =?UTF-8?q?Micha=C5=82=20Miros=C5=82aw?= , Thomas Zimmermann , Mikulas Patocka , Daniel Mack , Haojian Zhuang , Robert Jarzmik , Konstantin Khorenko , Prarit Bhargava , Gerd Hoffmann , Steve Sakoman , Steve Sakoman , linux-arm-kernel@lists.infradead.org Subject: [PATCH 10/33] fbcon: call fbcon_fb_(un)registered directly Date: Tue, 28 May 2019 11:02:41 +0200 Message-Id: <20190528090304.9388-11-daniel.vetter@ffwll.ch> X-Mailer: git-send-email 2.20.1 In-Reply-To: <20190528090304.9388-1-daniel.vetter@ffwll.ch> References: <20190528090304.9388-1-daniel.vetter@ffwll.ch> MIME-Version: 1.0 Content-Type: text/plain; charset=UTF-8 Content-Transfer-Encoding: 8bit Sender: linux-kernel-owner@vger.kernel.org Precedence: bulk List-ID: X-Mailing-List: linux-kernel@vger.kernel.org With commit 6104c37094e729f3d4ce65797002112735d49cd1 Author: Daniel Vetter Date: Tue Aug 1 17:32:07 2017 +0200 fbcon: Make fbcon a built-time depency for fbdev we have a static dependency between fbcon and fbdev, and we can replace the indirection through the notifier chain with a function call. v2: Sam Ravnborg noticed that mach-pxa/am200epd.c has a notifier too, and listens to this. ... Looking at the code it seems to wait for some fb to show up, so that it can get the framebuffer base address from the fb_info struct. I suspect his is some firmware fbdev. Then it uses that information to let the real fbdev driver (metronomefb.c by the looks) get at the framebuffer memory. This doesn't looke like it's easy to fix (except by deleting the entire thing, seems untouched since 2008, we might be able to get away with that), so let's just stuff a few #ifdef into fb.h and fbmem.c and cry over them for a bit. Signed-off-by: Daniel Vetter Reviewed-by: Sam Ravnborg Reviewed-by: Maarten Lankhorst Cc: Bartlomiej Zolnierkiewicz Cc: Daniel Vetter Cc: Hans de Goede Cc: Greg Kroah-Hartman Cc: "Noralf Trønnes" Cc: Yisheng Xie Cc: Peter Rosin Cc: "Michał Mirosław" Cc: Thomas Zimmermann Cc: Mikulas Patocka Cc: linux-fbdev@vger.kernel.org Cc: Daniel Mack Cc: Haojian Zhuang Cc: Robert Jarzmik Cc: Konstantin Khorenko Cc: Prarit Bhargava Cc: Gerd Hoffmann Cc: Steve Sakoman Cc: Steve Sakoman Cc: linux-arm-kernel@lists.infradead.org --- arch/arm/mach-pxa/am200epd.c | 13 +++++++++++-- drivers/video/fbdev/core/fbcon.c | 14 +++----------- drivers/video/fbdev/core/fbmem.c | 24 +++++++++++++++++------- include/linux/fb.h | 7 +++++-- include/linux/fbcon.h | 4 ++++ 5 files changed, 40 insertions(+), 22 deletions(-) diff --git a/arch/arm/mach-pxa/am200epd.c b/arch/arm/mach-pxa/am200epd.c index 50e18ed37fa6..cac0bb09db14 100644 --- a/arch/arm/mach-pxa/am200epd.c +++ b/arch/arm/mach-pxa/am200epd.c @@ -347,8 +347,17 @@ int __init am200_init(void) { int ret; - /* before anything else, we request notification for any fb - * creation events */ + /* + * Before anything else, we request notification for any fb + * creation events. + * + * FIXME: This is terrible and needs to be nuked. The notifier is used + * to get at the fb base address from the boot splash fb driver, which + * is then passed to metronomefb. Instaed of metronomfb or this board + * support file here figuring this out on their own. + * + * See also the #ifdef in fbmem.c. + */ fb_register_client(&am200_fb_notif); pxa2xx_mfp_config(ARRAY_AND_SIZE(am200_pin_config)); diff --git a/drivers/video/fbdev/core/fbcon.c b/drivers/video/fbdev/core/fbcon.c index e11bae2787e6..5a9fe0c0dd3c 100644 --- a/drivers/video/fbdev/core/fbcon.c +++ b/drivers/video/fbdev/core/fbcon.c @@ -3119,14 +3119,14 @@ static int fbcon_fb_unbind(int idx) } /* called with console_lock held */ -static int fbcon_fb_unregistered(struct fb_info *info) +void fbcon_fb_unregistered(struct fb_info *info) { int i, idx; WARN_CONSOLE_UNLOCKED(); if (deferred_takeover) - return 0; + return; idx = info->node; for (i = first_fb_vc; i <= last_fb_vc; i++) { @@ -3155,8 +3155,6 @@ static int fbcon_fb_unregistered(struct fb_info *info) if (!num_registered_fb) do_unregister_con_driver(&fb_con); - - return 0; } /* called with console_lock held */ @@ -3215,7 +3213,7 @@ static inline void fbcon_select_primary(struct fb_info *info) #endif /* CONFIG_FRAMEBUFFER_DETECT_PRIMARY */ /* called with console_lock held */ -static int fbcon_fb_registered(struct fb_info *info) +int fbcon_fb_registered(struct fb_info *info) { int ret = 0, i, idx; @@ -3359,12 +3357,6 @@ static int fbcon_event_notify(struct notifier_block *self, idx = info->node; ret = fbcon_fb_unbind(idx); break; - case FB_EVENT_FB_REGISTERED: - ret = fbcon_fb_registered(info); - break; - case FB_EVENT_FB_UNREGISTERED: - ret = fbcon_fb_unregistered(info); - break; case FB_EVENT_SET_CONSOLE_MAP: /* called with console lock held */ con2fb = event->data; diff --git a/drivers/video/fbdev/core/fbmem.c b/drivers/video/fbdev/core/fbmem.c index 8ba674ffb3c9..bed7698ad18a 100644 --- a/drivers/video/fbdev/core/fbmem.c +++ b/drivers/video/fbdev/core/fbmem.c @@ -1660,7 +1660,6 @@ MODULE_PARM_DESC(lockless_register_fb, static int do_register_framebuffer(struct fb_info *fb_info) { int i, ret; - struct fb_event event; struct fb_videomode mode; if (fb_check_foreignness(fb_info)) @@ -1723,7 +1722,14 @@ static int do_register_framebuffer(struct fb_info *fb_info) fb_add_videomode(&mode, &fb_info->modelist); registered_fb[i] = fb_info; - event.info = fb_info; +#ifdef CONFIG_GUMSTIX_AM200EPD + { + struct fb_event event; + event.info = fb_info; + fb_notifier_call_chain(FB_EVENT_FB_REGISTERED, &event); + } +#endif + if (!lockless_register_fb) console_lock(); else @@ -1732,9 +1738,8 @@ static int do_register_framebuffer(struct fb_info *fb_info) ret = -ENODEV; goto unlock_console; } - ret = 0; - fb_notifier_call_chain(FB_EVENT_FB_REGISTERED, &event); + ret = fbcon_fb_registered(fb_info); unlock_fb_info(fb_info); unlock_console: if (!lockless_register_fb) @@ -1771,7 +1776,6 @@ static int __unlink_framebuffer(struct fb_info *fb_info); static int do_unregister_framebuffer(struct fb_info *fb_info) { - struct fb_event event; int ret; ret = unbind_console(fb_info); @@ -1789,9 +1793,15 @@ static int do_unregister_framebuffer(struct fb_info *fb_info) registered_fb[fb_info->node] = NULL; num_registered_fb--; fb_cleanup_device(fb_info); - event.info = fb_info; +#ifdef CONFIG_GUMSTIX_AM200EPD + { + struct fb_event event; + event.info = fb_info; + fb_notifier_call_chain(FB_EVENT_FB_UNREGISTERED, &event); + } +#endif console_lock(); - fb_notifier_call_chain(FB_EVENT_FB_UNREGISTERED, &event); + fbcon_fb_unregistered(fb_info); console_unlock(); /* this may free fb info */ diff --git a/include/linux/fb.h b/include/linux/fb.h index f52ef0ad6781..288175fafaf6 100644 --- a/include/linux/fb.h +++ b/include/linux/fb.h @@ -136,10 +136,13 @@ struct fb_cursor_user { #define FB_EVENT_RESUME 0x03 /* An entry from the modelist was removed */ #define FB_EVENT_MODE_DELETE 0x04 -/* A driver registered itself */ + +#ifdef CONFIG_GUMSTIX_AM200EPD +/* only used by mach-pxa/am200epd.c */ #define FB_EVENT_FB_REGISTERED 0x05 -/* A driver unregistered itself */ #define FB_EVENT_FB_UNREGISTERED 0x06 +#endif + /* CONSOLE-SPECIFIC: get console to framebuffer mapping */ #define FB_EVENT_GET_CONSOLE_MAP 0x07 /* CONSOLE-SPECIFIC: set console to framebuffer mapping */ diff --git a/include/linux/fbcon.h b/include/linux/fbcon.h index f68a7db14165..94a71e9e1257 100644 --- a/include/linux/fbcon.h +++ b/include/linux/fbcon.h @@ -4,9 +4,13 @@ #ifdef CONFIG_FRAMEBUFFER_CONSOLE void __init fb_console_init(void); void __exit fb_console_exit(void); +int fbcon_fb_registered(struct fb_info *info); +void fbcon_fb_unregistered(struct fb_info *info); #else static inline void fb_console_init(void) {} static inline void fb_console_exit(void) {} +static inline int fbcon_fb_registered(struct fb_info *info) { return 0; } +static inline void fbcon_fb_unregistered(struct fb_info *info) {} #endif #endif /* _LINUX_FBCON_H */ -- 2.20.1