From patchwork Tue Sep 22 14:30:03 2009 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: "C.A, Subramaniam" X-Patchwork-Id: 49312 X-Patchwork-Delegate: tony@atomide.com Received: from vger.kernel.org (vger.kernel.org [209.132.176.167]) by demeter.kernel.org (8.14.2/8.14.2) with ESMTP id n8MEURmq027544 for ; Tue, 22 Sep 2009 14:30:27 GMT Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1756685AbZIVOaH (ORCPT ); Tue, 22 Sep 2009 10:30:07 -0400 Received: (majordomo@vger.kernel.org) by vger.kernel.org id S1756680AbZIVOaG (ORCPT ); Tue, 22 Sep 2009 10:30:06 -0400 Received: from comal.ext.ti.com ([198.47.26.152]:55534 "EHLO comal.ext.ti.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1751761AbZIVOaF convert rfc822-to-8bit (ORCPT ); Tue, 22 Sep 2009 10:30:05 -0400 Received: from dbdp20.itg.ti.com ([172.24.170.38]) by comal.ext.ti.com (8.13.7/8.13.7) with ESMTP id n8METu0v022185; Tue, 22 Sep 2009 09:29:57 -0500 Received: from dbde70.ent.ti.com (localhost [127.0.0.1]) by dbdp20.itg.ti.com (8.13.8/8.13.8) with ESMTP id n8METtu4028115; Tue, 22 Sep 2009 19:59:55 +0530 (IST) Received: from dbde02.ent.ti.com ([172.24.170.145]) by dbde70.ent.ti.com ([172.24.170.148]) with mapi; Tue, 22 Sep 2009 19:59:55 +0530 From: "C.A, Subramaniam" To: "linux-omap@vger.kernel.org" CC: "rmk@arm.linux.org.uk" , "tony@atomide.com" , Hiroshi DOYU , "Kanigeri, Hari" , "Gupta, Ramesh" Date: Tue, 22 Sep 2009 20:00:03 +0530 Subject: [PATCH 4/10] omap mailbox: remove class interface Thread-Topic: [PATCH 4/10] omap mailbox: remove class interface Thread-Index: Aco7kSxy7a75p+RhQvyh5Z3Tln1J6g== Message-ID: Accept-Language: en-US Content-Language: en-US X-MS-Has-Attach: X-MS-TNEF-Correlator: acceptlanguage: en-US MIME-Version: 1.0 Sender: linux-omap-owner@vger.kernel.org Precedence: bulk List-ID: X-Mailing-List: linux-omap@vger.kernel.org From 3ab5427742e66e7b9e0eb882e71bd6f688163200 Mon Sep 17 00:00:00 2001 From: Hiroshi DOYU Date: Wed, 2 Sep 2009 20:03:19 +0530 Subject: [PATCH 4/10] omap mailbox: remove class interface It's not used at present. Signed-off-by: Hiroshi DOYU --- arch/arm/plat-omap/include/mach/mailbox.h | 1 - arch/arm/plat-omap/mailbox.c | 115 ++-------------------------- 2 files changed, 9 insertions(+), 107 deletions(-) diff --git a/arch/arm/plat-omap/include/mach/mailbox.h b/arch/arm/plat-omap/include/mach/mailbox.h index b7a6991..319306a 100644 --- a/arch/arm/plat-omap/include/mach/mailbox.h +++ b/arch/arm/plat-omap/include/mach/mailbox.h @@ -8,7 +8,6 @@ #include typedef u32 mbox_msg_t; -typedef void (mbox_receiver_t)(mbox_msg_t msg); struct omap_mbox; typedef int __bitwise omap_mbox_irq_t; diff --git a/arch/arm/plat-omap/mailbox.c b/arch/arm/plat-omap/mailbox.c index e2bcc9d..6e713a7 100644 --- a/arch/arm/plat-omap/mailbox.c +++ b/arch/arm/plat-omap/mailbox.c @@ -71,7 +71,7 @@ static inline int is_mbox_irq(struct omap_mbox *mbox, omap_mbox_irq_t irq) /* * message sender */ -static int __mbox_msg_send(struct omap_mbox *mbox, mbox_msg_t msg, void *arg) +static int __mbox_msg_send(struct omap_mbox *mbox, mbox_msg_t msg) { int ret = 0, i = 1000; @@ -82,15 +82,7 @@ static int __mbox_msg_send(struct omap_mbox *mbox, mbox_msg_t msg, void *arg) return -1; udelay(1); } - - if (arg && mbox->txq->callback) { - ret = mbox->txq->callback(arg); - if (ret) - goto out; - } - mbox_fifo_write(mbox, msg); - out: return ret; } @@ -152,7 +144,7 @@ static void mbox_tx_work(struct work_struct *work) tx_data = rq->special; - ret = __mbox_msg_send(mbox, tx_data->msg, tx_data->arg); + ret = __mbox_msg_send(mbox, tx_data->msg); if (ret) { enable_mbox_irq(mbox, IRQ_TX); spin_lock(q->queue_lock); @@ -180,11 +172,6 @@ static void mbox_rx_work(struct work_struct *work) mbox_msg_t msg; unsigned long flags; - if (mbox->rxq->callback == NULL) { - sysfs_notify(&mbox->dev->kobj, NULL, "mbox"); - return; - } - while (1) { spin_lock_irqsave(q->queue_lock, flags); rq = blk_fetch_request(q); @@ -257,69 +244,6 @@ static irqreturn_t mbox_interrupt(int irq, void *p) return IRQ_HANDLED; } -/* - * sysfs files - */ -static ssize_t -omap_mbox_write(struct device *dev, struct device_attribute *attr, - const char *buf, size_t count) -{ - int ret; - mbox_msg_t *p = (mbox_msg_t *)buf; - struct omap_mbox *mbox = dev_get_drvdata(dev); - - for (; count >= sizeof(mbox_msg_t); count -= sizeof(mbox_msg_t)) { - ret = omap_mbox_msg_send(mbox, be32_to_cpu(*p), NULL); - if (ret) - return -EAGAIN; - p++; - } - - return (size_t)((char *)p - buf); -} - -static ssize_t -omap_mbox_read(struct device *dev, struct device_attribute *attr, char *buf) -{ - unsigned long flags; - struct request *rq; - mbox_msg_t *p = (mbox_msg_t *) buf; - struct omap_mbox *mbox = dev_get_drvdata(dev); - struct request_queue *q = mbox->rxq->queue; - - while (1) { - spin_lock_irqsave(q->queue_lock, flags); - rq = blk_fetch_request(q); - spin_unlock_irqrestore(q->queue_lock, flags); - - if (!rq) - break; - - *p = (mbox_msg_t)rq->special; - - blk_end_request_all(rq, 0); - - p++; - } - - pr_debug("%02x %02x %02x %02x\n", buf[0], buf[1], buf[2], buf[3]); - - return (size_t) ((char *)p - buf); -} - -static DEVICE_ATTR(mbox, S_IRUGO | S_IWUSR, omap_mbox_read, omap_mbox_write); - -static ssize_t mbox_show(struct class *class, char *buf) -{ - return sprintf(buf, "mbox"); -} - -static CLASS_ATTR(mbox, S_IRUGO, mbox_show, NULL); - -static struct class omap_mbox_class = { - .name = "omap-mailbox", -}; - static struct omap_mbox_queue *mbox_queue_alloc(struct omap_mbox *mbox, request_fn_proc *proc, void (*work) (struct work_struct *)) @@ -353,7 +277,7 @@ static void mbox_queue_free(struct omap_mbox_queue *q) kfree(q); } -static int omap_mbox_init(struct omap_mbox *mbox) +static int omap_mbox_startup(struct omap_mbox *mbox) { int ret; struct omap_mbox_queue *mq; @@ -436,7 +360,7 @@ struct omap_mbox *omap_mbox_get(const char *name) read_unlock(&mboxes_lock); - ret = omap_mbox_init(mbox); + ret = omap_mbox_startup(mbox); if (ret) return ERR_PTR(-ENODEV); @@ -460,15 +384,6 @@ int omap_mbox_register(struct device *parent, struct omap_mbox *mbox) if (mbox->next) return -EBUSY; - mbox->dev = device_create(&omap_mbox_class, - parent, 0, mbox, "%s", mbox->name); - if (IS_ERR(mbox->dev)) - return PTR_ERR(mbox->dev); - - ret = device_create_file(mbox->dev, &dev_attr_mbox); - if (ret) - goto err_sysfs; - write_lock(&mboxes_lock); tmp = find_mboxes(mbox->name); if (*tmp) { @@ -482,9 +397,6 @@ int omap_mbox_register(struct device *parent, struct omap_mbox *mbox) return 0; err_find: - device_remove_file(mbox->dev, &dev_attr_mbox); -err_sysfs: - device_unregister(mbox->dev); return ret; } EXPORT_SYMBOL(omap_mbox_register); @@ -500,8 +412,6 @@ int omap_mbox_unregister(struct omap_mbox *mbox) *tmp = mbox->next; mbox->next = NULL; write_unlock(&mboxes_lock); - device_remove_file(mbox->dev, &dev_attr_mbox); - device_unregister(mbox->dev); return 0; } tmp = &(*tmp)->next; @@ -512,23 +422,16 @@ int omap_mbox_unregister(struct omap_mbox *mbox) } EXPORT_SYMBOL(omap_mbox_unregister); -static int __init omap_mbox_class_init(void) +static int __init omap_mbox_init(void) { - int ret = class_register(&omap_mbox_class); - if (!ret) - ret = class_create_file(&omap_mbox_class, &class_attr_mbox); - - return ret; + return 0; } +module_init(omap_mbox_init); -static void __exit omap_mbox_class_exit(void) +static void __exit omap_mbox_exit(void) { - class_remove_file(&omap_mbox_class, &class_attr_mbox); - class_unregister(&omap_mbox_class); } - -subsys_initcall(omap_mbox_class_init); -module_exit(omap_mbox_class_exit); +module_exit(omap_mbox_exit); MODULE_LICENSE("GPL v2"); MODULE_DESCRIPTION("omap mailbox: interrupt driven messaging");