From patchwork Thu Jul 11 06:27:16 2013 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Peter Chen X-Patchwork-Id: 2826038 Return-Path: X-Original-To: patchwork-linux-arm@patchwork.kernel.org Delivered-To: patchwork-parsemail@patchwork1.web.kernel.org Received: from mail.kernel.org (mail.kernel.org [198.145.19.201]) by patchwork1.web.kernel.org (Postfix) with ESMTP id 0B64E9F968 for ; Thu, 11 Jul 2013 07:13:30 +0000 (UTC) Received: from mail.kernel.org (localhost [127.0.0.1]) by mail.kernel.org (Postfix) with ESMTP id A3D16200F1 for ; Thu, 11 Jul 2013 07:13:28 +0000 (UTC) Received: from casper.infradead.org (casper.infradead.org [85.118.1.10]) (using TLSv1 with cipher DHE-RSA-AES256-SHA (256/256 bits)) (No client certificate requested) by mail.kernel.org (Postfix) with ESMTPS id 5F2BF200F0 for ; Thu, 11 Jul 2013 07:13:27 +0000 (UTC) Received: from merlin.infradead.org ([2001:4978:20e::2]) by casper.infradead.org with esmtps (Exim 4.80.1 #2 (Red Hat Linux)) id 1UxAPg-0007Se-TS; Thu, 11 Jul 2013 06:31:41 +0000 Received: from localhost ([::1] helo=merlin.infradead.org) by merlin.infradead.org with esmtp (Exim 4.80.1 #2 (Red Hat Linux)) id 1UxANi-0007I8-Jv; Thu, 11 Jul 2013 06:29:34 +0000 Received: from co1ehsobe001.messaging.microsoft.com ([216.32.180.184] helo=co1outboundpool.messaging.microsoft.com) by merlin.infradead.org with esmtps (Exim 4.80.1 #2 (Red Hat Linux)) id 1UxANd-0007Fn-Gb for linux-arm-kernel@lists.infradead.org; Thu, 11 Jul 2013 06:29:32 +0000 Received: from mail127-co1-R.bigfish.com (10.243.78.247) by CO1EHSOBE015.bigfish.com (10.243.66.78) with Microsoft SMTP Server id 14.1.225.22; Thu, 11 Jul 2013 06:29:08 +0000 Received: from mail127-co1 (localhost [127.0.0.1]) by mail127-co1-R.bigfish.com (Postfix) with ESMTP id 4ACDCA80050; Thu, 11 Jul 2013 06:29:08 +0000 (UTC) X-Forefront-Antispam-Report: CIP:70.37.183.190; KIP:(null); UIP:(null); IPV:NLI; H:mail.freescale.net; RD:none; EFVD:NLI X-SpamScore: 0 X-BigFish: VS0(zzzz1f42h1ee6h1de0h1fdah2073h1202h1e76h1d1ah1d2ah1fc6hzz8275bhz2dh2a8h668h839hd24he5bhf0ah1288h12a5h12a9h12bdh12e5h1354h137ah139eh13b6h1441h1504h1537h162dh1631h1758h1898h18e1h1946h19b5h1ad9h1b0ah1d0ch1d2eh1d3fh1dfeh1dffh1e23h1155h) Received: from mail127-co1 (localhost.localdomain [127.0.0.1]) by mail127-co1 (MessageSwitch) id 137352409375155_20433; Thu, 11 Jul 2013 06:28:13 +0000 (UTC) Received: from CO1EHSMHS017.bigfish.com (unknown [10.243.78.237]) by mail127-co1.bigfish.com (Postfix) with ESMTP id 3FACA98006D; Thu, 11 Jul 2013 06:27:59 +0000 (UTC) Received: from mail.freescale.net (70.37.183.190) by CO1EHSMHS017.bigfish.com (10.243.66.27) with Microsoft SMTP Server (TLS) id 14.1.225.23; Thu, 11 Jul 2013 06:27:59 +0000 Received: from tx30smr01.am.freescale.net (10.81.153.31) by 039-SN1MMR1-001.039d.mgd.msft.net (10.84.1.13) with Microsoft SMTP Server (TLS) id 14.3.136.1; Thu, 11 Jul 2013 06:30:11 +0000 Received: from localhost.localdomain (nchen-desktop.ap.freescale.net [10.192.242.40]) by tx30smr01.am.freescale.net (8.14.3/8.14.0) with ESMTP id r6B6RLD9016369; Wed, 10 Jul 2013 23:27:55 -0700 From: Peter Chen To: Subject: [PATCH v12 08/13] usb: chipidea: move otg relate things to otg file Date: Thu, 11 Jul 2013 14:27:16 +0800 Message-ID: <1373524041-10482-9-git-send-email-peter.chen@freescale.com> X-Mailer: git-send-email 1.7.0.4 In-Reply-To: <1373524041-10482-1-git-send-email-peter.chen@freescale.com> References: <1373524041-10482-1-git-send-email-peter.chen@freescale.com> MIME-Version: 1.0 X-OriginatorOrg: freescale.com X-CRM114-Version: 20100106-BlameMichelson ( TRE 0.8.0 (BSD) ) MR-646709E3 X-CRM114-CacheID: sfid-20130711_022930_674825_74BA353D X-CRM114-Status: GOOD ( 16.06 ) X-Spam-Score: -2.6 (--) Cc: marex@denx.de, m.grzeschik@pengutronix.de, frank.li@freescale.com, gregkh@linuxfoundation.org, linux-usb@vger.kernel.org, mkl@pengutronix.de, kernel@pengutronix.de, maxime.ripard@free-electrons.com, shawn.guo@linaro.org, festevam@gmail.com, linux-arm-kernel@lists.infradead.org X-BeenThere: linux-arm-kernel@lists.infradead.org X-Mailman-Version: 2.1.15 Precedence: list List-Id: List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Sender: "linux-arm-kernel" Errors-To: linux-arm-kernel-bounces+patchwork-linux-arm=patchwork.kernel.org@lists.infradead.org X-Spam-Status: No, score=-4.5 required=5.0 tests=BAYES_00, RCVD_IN_DNSWL_MED, RP_MATCHES_RCVD, UNPARSEABLE_RELAY autolearn=unavailable version=3.3.1 X-Spam-Checker-Version: SpamAssassin 3.3.1 (2010-03-16) on mail.kernel.org X-Virus-Scanned: ClamAV using ClamSMTP Move otg relate things to otg file. Signed-off-by: Peter Chen --- drivers/usb/chipidea/core.c | 63 +++++++++---------------------------------- drivers/usb/chipidea/otg.c | 57 +++++++++++++++++++++++++++++++++++++- drivers/usb/chipidea/otg.h | 2 + 3 files changed, 70 insertions(+), 52 deletions(-) diff --git a/drivers/usb/chipidea/core.c b/drivers/usb/chipidea/core.c index f701e3b..0197da2 100644 --- a/drivers/usb/chipidea/core.c +++ b/drivers/usb/chipidea/core.c @@ -295,40 +295,6 @@ int hw_device_reset(struct ci_hdrc *ci, u32 mode) return 0; } -/** - * ci_otg_role - pick role based on ID pin state - * @ci: the controller - */ -static enum ci_role ci_otg_role(struct ci_hdrc *ci) -{ - u32 sts = hw_read(ci, OP_OTGSC, ~0); - enum ci_role role = sts & OTGSC_ID - ? CI_ROLE_GADGET - : CI_ROLE_HOST; - - return role; -} - -/** - * ci_role_work - perform role changing based on ID pin - * @work: work struct - */ -static void ci_role_work(struct work_struct *work) -{ - struct ci_hdrc *ci = container_of(work, struct ci_hdrc, work); - enum ci_role role = ci_otg_role(ci); - - if (role != ci->role) { - dev_dbg(ci->dev, "switching from %s to %s\n", - ci_role(ci)->name, ci->roles[role]->name); - - ci_role_stop(ci); - ci_role_start(ci, role); - } - - enable_irq(ci->irq); -} - static irqreturn_t ci_irq(int irq, void *data) { struct ci_hdrc *ci = data; @@ -409,6 +375,8 @@ static inline void ci_role_destroy(struct ci_hdrc *ci) { ci_hdrc_gadget_destroy(ci); ci_hdrc_host_destroy(ci); + if (ci->is_otg) + ci_hdrc_otg_destory(ci); } static void ci_get_otg_capable(struct ci_hdrc *ci) @@ -475,13 +443,6 @@ static int ci_hdrc_probe(struct platform_device *pdev) return -ENODEV; } - INIT_WORK(&ci->work, ci_role_work); - ci->wq = create_singlethread_workqueue("ci_otg"); - if (!ci->wq) { - dev_err(dev, "can't create workqueue\n"); - return -ENODEV; - } - /* To know if controller is OTG capable or not */ ci_get_otg_capable(ci); @@ -510,8 +471,15 @@ static int ci_hdrc_probe(struct platform_device *pdev) if (!ci->roles[CI_ROLE_HOST] && !ci->roles[CI_ROLE_GADGET]) { dev_err(dev, "no supported roles\n"); - ret = -ENODEV; - goto rm_wq; + return -ENODEV; + } + + if (ci->is_otg) { + ret = ci_hdrc_otg_init(ci); + if (ret) { + dev_err(dev, "init otg fails, ret = %d\n", ret); + goto stop; + } } if (ci->roles[CI_ROLE_HOST] && ci->roles[CI_ROLE_GADGET]) { @@ -519,7 +487,7 @@ static int ci_hdrc_probe(struct platform_device *pdev) /* ID pin needs 1ms debouce time, we delay 2ms for safe */ mdelay(2); ci->role = ci_otg_role(ci); - ci_hdrc_otg_init(ci); + ci_enable_otg_interrupt(ci, OTGSC_IDIE); } else { /* * If the controller is not OTG capable, but support @@ -538,7 +506,7 @@ static int ci_hdrc_probe(struct platform_device *pdev) if (ret) { dev_err(dev, "can't start %s role\n", ci_role(ci)->name); ret = -ENODEV; - goto rm_wq; + goto stop; } platform_set_drvdata(pdev, ci); @@ -554,9 +522,6 @@ static int ci_hdrc_probe(struct platform_device *pdev) free_irq(ci->irq, ci); stop: ci_role_destroy(ci); -rm_wq: - flush_workqueue(ci->wq); - destroy_workqueue(ci->wq); return ret; } @@ -566,8 +531,6 @@ static int ci_hdrc_remove(struct platform_device *pdev) struct ci_hdrc *ci = platform_get_drvdata(pdev); dbg_remove_files(ci); - flush_workqueue(ci->wq); - destroy_workqueue(ci->wq); free_irq(ci->irq, ci); ci_role_destroy(ci); diff --git a/drivers/usb/chipidea/otg.c b/drivers/usb/chipidea/otg.c index abefb4d..68f2faf 100644 --- a/drivers/usb/chipidea/otg.c +++ b/drivers/usb/chipidea/otg.c @@ -39,12 +39,65 @@ void ci_disable_otg_interrupt(struct ci_hdrc *ci, u32 bits) } /** - * ci_hdrc_otg_init - initialize otgsc bits + * ci_otg_role - pick role based on ID pin state + * @ci: the controller + */ +enum ci_role ci_otg_role(struct ci_hdrc *ci) +{ + u32 sts = hw_read(ci, OP_OTGSC, ~0); + enum ci_role role = sts & OTGSC_ID + ? CI_ROLE_GADGET + : CI_ROLE_HOST; + + return role; +} + +/** + * ci_role_work - perform role changing based on ID pin + * @work: work struct + */ +static void ci_role_work(struct work_struct *work) +{ + struct ci_hdrc *ci = container_of(work, struct ci_hdrc, work); + enum ci_role role = ci_otg_role(ci); + + if (role != ci->role) { + dev_dbg(ci->dev, "switching from %s to %s\n", + ci_role(ci)->name, ci->roles[role]->name); + + ci_role_stop(ci); + ci_role_start(ci, role); + } + + enable_irq(ci->irq); +} + +/** + * ci_hdrc_otg_init - initialize otg struct * ci: the controller */ int ci_hdrc_otg_init(struct ci_hdrc *ci) { - ci_enable_otg_interrupt(ci, OTGSC_IDIE); + INIT_WORK(&ci->work, ci_role_work); + ci->wq = create_singlethread_workqueue("ci_otg"); + if (!ci->wq) { + dev_err(ci->dev, "can't create workqueue\n"); + return -ENODEV; + } return 0; } + +/** + * ci_hdrc_otg_destroy - destory otg struct + * ci: the controller + */ +void ci_hdrc_otg_destory(struct ci_hdrc *ci) +{ + if (ci->wq) { + flush_workqueue(ci->wq); + destroy_workqueue(ci->wq); + } + ci_disable_otg_interrupt(ci, OTGSC_INT_EN_BITS); + ci_clear_otg_interrupt(ci, OTGSC_INT_STATUS_BITS); +} diff --git a/drivers/usb/chipidea/otg.h b/drivers/usb/chipidea/otg.h index f24ec37..8913062 100644 --- a/drivers/usb/chipidea/otg.h +++ b/drivers/usb/chipidea/otg.h @@ -15,5 +15,7 @@ int ci_hdrc_otg_init(struct ci_hdrc *ci); void ci_clear_otg_interrupt(struct ci_hdrc *ci, u32 bits); void ci_enable_otg_interrupt(struct ci_hdrc *ci, u32 bits); void ci_disable_otg_interrupt(struct ci_hdrc *ci, u32 bits); +void ci_hdrc_otg_destory(struct ci_hdrc *ci); +enum ci_role ci_otg_role(struct ci_hdrc *ci); #endif /* __DRIVERS_USB_CHIPIDEA_OTG_H */