From patchwork Mon Jun 5 14:48:09 2023 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Thomas Zimmermann X-Patchwork-Id: 13267559 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 vger.kernel.org (vger.kernel.org [23.128.96.18]) by smtp.lore.kernel.org (Postfix) with ESMTP id B8105C8300C for ; Mon, 5 Jun 2023 14:48:54 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S234214AbjFEOsi (ORCPT ); Mon, 5 Jun 2023 10:48:38 -0400 Received: from lindbergh.monkeyblade.net ([23.128.96.19]:36244 "EHLO lindbergh.monkeyblade.net" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S232820AbjFEOsZ (ORCPT ); Mon, 5 Jun 2023 10:48:25 -0400 Received: from smtp-out1.suse.de (smtp-out1.suse.de [IPv6:2001:67c:2178:6::1c]) by lindbergh.monkeyblade.net (Postfix) with ESMTPS id 45A8B9E; Mon, 5 Jun 2023 07:48:24 -0700 (PDT) Received: from imap2.suse-dmz.suse.de (imap2.suse-dmz.suse.de [192.168.254.74]) (using TLSv1.3 with cipher TLS_AES_256_GCM_SHA384 (256/256 bits) key-exchange X25519 server-signature ECDSA (P-521) server-digest SHA512) (No client certificate requested) by smtp-out1.suse.de (Postfix) with ESMTPS id DDE4521B74; Mon, 5 Jun 2023 14:48:22 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=suse.de; s=susede2_rsa; t=1685976502; 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=HY1xBS5t4gN22KoCyN1M74s1neR0Xf+Dk7ayCFKX4sY=; b=KhrvcfN00z9SiiK9XpwY5eg+MFq8JBqdQUFpjuM613UN7yxUdtP9u6UgTFG8U2XJHprk6R lmAHJKREfss5cD08dJqurVyDmWxmKk63TJqavoV5AiCAxvFo1Oirr5twwWvGiLX/ijX/dt Cr/+dBRZkMtsmvgr2G4ka+7NlyE+LpU= DKIM-Signature: v=1; a=ed25519-sha256; c=relaxed/relaxed; d=suse.de; s=susede2_ed25519; t=1685976502; 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=HY1xBS5t4gN22KoCyN1M74s1neR0Xf+Dk7ayCFKX4sY=; b=cwhVwRerNRlLM0OrfMssQv6wJ0cmxqhyHBGlrtjrtuE+2LdZgZVoFWo58eaWhFsyD+uJak buKep5nbjzWoN3Cw== Received: from imap2.suse-dmz.suse.de (imap2.suse-dmz.suse.de [192.168.254.74]) (using TLSv1.3 with cipher TLS_AES_256_GCM_SHA384 (256/256 bits) key-exchange X25519 server-signature ECDSA (P-521) server-digest SHA512) (No client certificate requested) by imap2.suse-dmz.suse.de (Postfix) with ESMTPS id 9848F13A3C; Mon, 5 Jun 2023 14:48:22 +0000 (UTC) Received: from dovecot-director2.suse.de ([192.168.254.65]) by imap2.suse-dmz.suse.de with ESMTPSA id KBtNJLb1fWQvXwAAMHmgww (envelope-from ); Mon, 05 Jun 2023 14:48:22 +0000 From: Thomas Zimmermann To: daniel@ffwll.ch, javierm@redhat.com, sam@ravnborg.org, deller@gmx.de, geert+renesas@glider.be, lee@kernel.org, daniel.thompson@linaro.org, jingoohan1@gmail.com Cc: linux-fbdev@vger.kernel.org, dri-devel@lists.freedesktop.org, linux-sh@vger.kernel.org, linux-omap@vger.kernel.org, linux-staging@lists.linux.dev, Thomas Zimmermann Subject: [PATCH 27/30] fbdev/core: Move procfs code to separate file Date: Mon, 5 Jun 2023 16:48:09 +0200 Message-Id: <20230605144812.15241-28-tzimmermann@suse.de> X-Mailer: git-send-email 2.40.1 In-Reply-To: <20230605144812.15241-1-tzimmermann@suse.de> References: <20230605144812.15241-1-tzimmermann@suse.de> MIME-Version: 1.0 Precedence: bulk List-ID: X-Mailing-List: linux-sh@vger.kernel.org Move fbdev's procfs code into a separate file and contain it in init and cleanup helpers. No functional changes. Signed-off-by: Thomas Zimmermann Reviewed-by: Sam Ravnborg --- drivers/video/fbdev/core/Makefile | 1 + drivers/video/fbdev/core/fb_internal.h | 12 ++++- drivers/video/fbdev/core/fb_procfs.c | 62 ++++++++++++++++++++++++++ drivers/video/fbdev/core/fbmem.c | 51 +++------------------ 4 files changed, 80 insertions(+), 46 deletions(-) create mode 100644 drivers/video/fbdev/core/fb_procfs.c diff --git a/drivers/video/fbdev/core/Makefile b/drivers/video/fbdev/core/Makefile index eee3295bc225..665320160f70 100644 --- a/drivers/video/fbdev/core/Makefile +++ b/drivers/video/fbdev/core/Makefile @@ -3,6 +3,7 @@ obj-$(CONFIG_FB_NOTIFY) += fb_notify.o obj-$(CONFIG_FB) += fb.o fb-y := fb_backlight.o \ fb_info.o \ + fb_procfs.o \ fbmem.o fbmon.o fbcmap.o fbsysfs.o \ modedb.o fbcvt.o fb_cmdline.o fb_io_fops.o fb-$(CONFIG_FB_DEFERRED_IO) += fb_defio.o diff --git a/drivers/video/fbdev/core/fb_internal.h b/drivers/video/fbdev/core/fb_internal.h index 0b9640ae7a3d..51f7c9f04e45 100644 --- a/drivers/video/fbdev/core/fb_internal.h +++ b/drivers/video/fbdev/core/fb_internal.h @@ -3,7 +3,17 @@ #ifndef _FB_INTERNAL_H #define _FB_INTERNAL_H -struct fb_info; +#include +#include + +/* fbmem.c */ +extern struct mutex registration_lock; +extern struct fb_info *registered_fb[FB_MAX]; +extern int num_registered_fb; + +/* fb_procfs.c */ +int fb_init_procfs(void); +void fb_cleanup_procfs(void); /* fbsysfs.c */ int fb_device_create(struct fb_info *fb_info); diff --git a/drivers/video/fbdev/core/fb_procfs.c b/drivers/video/fbdev/core/fb_procfs.c new file mode 100644 index 000000000000..59641142f8aa --- /dev/null +++ b/drivers/video/fbdev/core/fb_procfs.c @@ -0,0 +1,62 @@ +// SPDX-License-Identifier: GPL-2.0 + +#include + +#include "fb_internal.h" + +static struct proc_dir_entry *fb_proc_dir_entry; + +static void *fb_seq_start(struct seq_file *m, loff_t *pos) +{ + mutex_lock(®istration_lock); + + return (*pos < FB_MAX) ? pos : NULL; +} + +static void fb_seq_stop(struct seq_file *m, void *v) +{ + mutex_unlock(®istration_lock); +} + +static void *fb_seq_next(struct seq_file *m, void *v, loff_t *pos) +{ + (*pos)++; + + return (*pos < FB_MAX) ? pos : NULL; +} + +static int fb_seq_show(struct seq_file *m, void *v) +{ + int i = *(loff_t *)v; + struct fb_info *fi = registered_fb[i]; + + if (fi) + seq_printf(m, "%d %s\n", fi->node, fi->fix.id); + + return 0; +} + +static const struct seq_operations __maybe_unused fb_proc_seq_ops = { + .start = fb_seq_start, + .stop = fb_seq_stop, + .next = fb_seq_next, + .show = fb_seq_show, +}; + +int fb_init_procfs(void) +{ + struct proc_dir_entry *proc; + + proc = proc_create_seq("fb", 0, NULL, &fb_proc_seq_ops); + if (!proc) + return -ENOMEM; + + fb_proc_dir_entry = proc; + + return 0; +} + +void fb_cleanup_procfs(void) +{ + proc_remove(fb_proc_dir_entry); +} diff --git a/drivers/video/fbdev/core/fbmem.c b/drivers/video/fbdev/core/fbmem.c index 66532774d351..de1e45240161 100644 --- a/drivers/video/fbdev/core/fbmem.c +++ b/drivers/video/fbdev/core/fbmem.c @@ -24,9 +24,7 @@ #include #include #include -#include #include -#include #include #include #include @@ -48,13 +46,9 @@ #define FBPIXMAPSIZE (1024 * 8) -static DEFINE_MUTEX(registration_lock); - +DEFINE_MUTEX(registration_lock); struct fb_info *registered_fb[FB_MAX] __read_mostly; int num_registered_fb __read_mostly; -#define for_each_registered_fb(i) \ - for (i = 0; i < FB_MAX; i++) \ - if (!registered_fb[i]) {} else bool fb_center_logo __read_mostly; @@ -705,40 +699,6 @@ int fb_show_logo(struct fb_info *info, int rotate) { return 0; } EXPORT_SYMBOL(fb_prepare_logo); EXPORT_SYMBOL(fb_show_logo); -static void *fb_seq_start(struct seq_file *m, loff_t *pos) -{ - mutex_lock(®istration_lock); - return (*pos < FB_MAX) ? pos : NULL; -} - -static void *fb_seq_next(struct seq_file *m, void *v, loff_t *pos) -{ - (*pos)++; - return (*pos < FB_MAX) ? pos : NULL; -} - -static void fb_seq_stop(struct seq_file *m, void *v) -{ - mutex_unlock(®istration_lock); -} - -static int fb_seq_show(struct seq_file *m, void *v) -{ - int i = *(loff_t *)v; - struct fb_info *fi = registered_fb[i]; - - if (fi) - seq_printf(m, "%d %s\n", fi->node, fi->fix.id); - return 0; -} - -static const struct seq_operations __maybe_unused proc_fb_seq_ops = { - .start = fb_seq_start, - .next = fb_seq_next, - .stop = fb_seq_stop, - .show = fb_seq_show, -}; - /* * We hold a reference to the fb_info in file->private_data, * but if the current registered fb has changed, we don't @@ -1624,8 +1584,9 @@ fbmem_init(void) { int ret; - if (!proc_create_seq("fb", 0, NULL, &proc_fb_seq_ops)) - return -ENOMEM; + ret = fb_init_procfs(); + if (ret) + return ret; ret = register_chrdev(FB_MAJOR, "fb", &fb_fops); if (ret) { @@ -1648,7 +1609,7 @@ fbmem_init(void) err_class: unregister_chrdev(FB_MAJOR, "fb"); err_chrdev: - remove_proc_entry("fb", NULL); + fb_cleanup_procfs(); return ret; } @@ -1659,7 +1620,7 @@ fbmem_exit(void) { fb_console_exit(); - remove_proc_entry("fb", NULL); + fb_cleanup_procfs(); class_destroy(fb_class); unregister_chrdev(FB_MAJOR, "fb"); }