From patchwork Tue Jul 7 11:52:43 2015 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Phil Edworthy X-Patchwork-Id: 6732241 X-Patchwork-Delegate: geert@linux-m68k.org Return-Path: X-Original-To: patchwork-linux-sh@patchwork.kernel.org Delivered-To: patchwork-parsemail@patchwork2.web.kernel.org Received: from mail.kernel.org (mail.kernel.org [198.145.29.136]) by patchwork2.web.kernel.org (Postfix) with ESMTP id A35FBC05AC for ; Tue, 7 Jul 2015 11:55:14 +0000 (UTC) Received: from mail.kernel.org (localhost [127.0.0.1]) by mail.kernel.org (Postfix) with ESMTP id B9135206F1 for ; Tue, 7 Jul 2015 11:55:13 +0000 (UTC) Received: from vger.kernel.org (vger.kernel.org [209.132.180.67]) by mail.kernel.org (Postfix) with ESMTP id A5D17206F0 for ; Tue, 7 Jul 2015 11:55:12 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S932149AbbGGLyy (ORCPT ); Tue, 7 Jul 2015 07:54:54 -0400 Received: from relmlor3.renesas.com ([210.160.252.173]:39504 "EHLO relmlie2.idc.renesas.com" rhost-flags-OK-OK-OK-FAIL) by vger.kernel.org with ESMTP id S1754520AbbGGLyx (ORCPT ); Tue, 7 Jul 2015 07:54:53 -0400 Received: from unknown (HELO relmlir1.idc.renesas.com) ([10.200.68.151]) by relmlie2.idc.renesas.com with ESMTP; 07 Jul 2015 20:54:51 +0900 Received: from relmlac1.idc.renesas.com (relmlac1.idc.renesas.com [10.200.69.21]) by relmlir1.idc.renesas.com (Postfix) with ESMTP id 42CDC52C63; Tue, 7 Jul 2015 20:54:51 +0900 (JST) Received: by relmlac1.idc.renesas.com (Postfix, from userid 0) id 270A48002E; Tue, 7 Jul 2015 20:54:51 +0900 (JST) Received: from relmlac1.idc.renesas.com (localhost [127.0.0.1]) by relmlac1.idc.renesas.com (Postfix) with ESMTP id 21EF28002D; Tue, 7 Jul 2015 20:54:51 +0900 (JST) Received: from relmlii2.idc.renesas.com [10.200.68.66] by relmlac1.idc.renesas.com with ESMTP id WAD25025; Tue, 7 Jul 2015 20:54:51 +0900 X-IronPort-AV: E=Sophos;i="5.15,422,1432566000"; d="scan'208";a="191050345" Received: from unknown (HELO relay41.aps.necel.com) ([10.29.19.9]) by relmlii2.idc.renesas.com with ESMTP; 07 Jul 2015 20:54:50 +0900 Received: from DU0NOTES13.ad.ree.renesas.com ([172.29.24.131]) by relay41.aps.necel.com (8.14.4+Sun/8.14.4) with ESMTP id t67BsnLc011288; Tue, 7 Jul 2015 20:54:49 +0900 (JST) Received: from localhost.localdomain ([172.29.43.47]) by DU0NOTES13.ad.ree.renesas.com (Lotus Domino Release 8.5.3 HF466) with ESMTP id 2015070713544853-70459 ; Tue, 7 Jul 2015 13:54:48 +0200 From: Phil Edworthy To: Laurent Pinchart Cc: Yoshihiro Shimoda , Kuninori Morimoto , Greg Kroah-Hartman , Felipe Balbi , Ulrich Hecht , Kishon Vijay Abraham I , Sergei Shtylyov , , , , Phil Edworthy X-Mailer: git-send-email 1.9.1 In-Reply-To: <3446210.Evs1k3c1oP@avalon> References: <3446210.Evs1k3c1oP@avalon> X-TNEFEvaluated: 1 Message-ID: <1436269963-25885-1-git-send-email-phil.edworthy@renesas.com> Date: Tue, 7 Jul 2015 12:52:43 +0100 Subject: [PATCH v5] usb: renesas_usbhs: Allow an OTG PHY driver to provide VBUS X-MIMETrack: Itemize by SMTP Server on DU0NOTES13/SERVER/REE(Release 8.5.3 HF466|March 09, 2012) at 07.07.2015 13:54:48, Serialize by Router on DU0NOTES13/SERVER/REE(Release 8.5.3 HF466|March 09, 2012) at 07.07.2015 13:54:49, Serialize complete at 07.07.2015 13:54:49 Sender: linux-sh-owner@vger.kernel.org Precedence: bulk List-ID: X-Mailing-List: linux-sh@vger.kernel.org X-Spam-Status: No, score=-7.7 required=5.0 tests=BAYES_00, RCVD_IN_DNSWL_HI, 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 These changes allow a PHY driver to trigger a VBUS interrupt and to provide the value of VBUS. Signed-off-by: Phil Edworthy --- v5: - Avoid race when vbus_is_indirect may or may not be read before the phy has called vbus_session. In doing so, the changes have also been isolated to mod_gadget.c v4: - Use true/false with bool vars. - Clean up "transceiver found" message. v3: - Changed how indirect vbus is plumbed in. - Removed unnecessary (void) on call to otg_set_peripheral. - Moved code that connects to bus through transceiver so it is before setting gpriv->driver. v2: - vbus variables changed from int to bool. - dev_info() changed to dev_err() --- drivers/usb/renesas_usbhs/mod_gadget.c | 62 ++++++++++++++++++++++++++++++++++ 1 file changed, 62 insertions(+) diff --git a/drivers/usb/renesas_usbhs/mod_gadget.c b/drivers/usb/renesas_usbhs/mod_gadget.c index dc2aa32..19a22a3 100644 --- a/drivers/usb/renesas_usbhs/mod_gadget.c +++ b/drivers/usb/renesas_usbhs/mod_gadget.c @@ -21,6 +21,7 @@ #include #include #include +#include #include "common.h" /* @@ -50,6 +51,8 @@ struct usbhsg_gpriv { int uep_size; struct usb_gadget_driver *driver; + struct usb_phy *transceiver; + bool vbus_indirect_value; u32 status; #define USBHSG_STATUS_STARTED (1 << 0) @@ -873,6 +876,27 @@ static int usbhsg_try_stop(struct usbhs_priv *priv, u32 status) } /* + * VBUS provided by the PHY + */ +static int usbhsm_phy_get_vbus(struct platform_device *pdev) +{ + struct usbhs_priv *priv = usbhs_pdev_to_priv(pdev); + struct usbhsg_gpriv *gpriv = usbhsg_priv_to_gpriv(priv); + + return gpriv->vbus_indirect_value; +} + +static void usbhs_mod_phy_mode(struct usbhs_priv *priv) +{ + struct usbhs_mod_info *info = &priv->mod_info; + + info->irq_vbus = NULL; + priv->pfunc.get_vbus = usbhsm_phy_get_vbus; + + usbhs_irq_callback_update(priv, NULL); +} + +/* * * linux usb function * @@ -882,12 +906,28 @@ static int usbhsg_gadget_start(struct usb_gadget *gadget, { struct usbhsg_gpriv *gpriv = usbhsg_gadget_to_gpriv(gadget); struct usbhs_priv *priv = usbhsg_gpriv_to_priv(gpriv); + struct device *dev = usbhs_priv_to_dev(priv); + int ret; if (!driver || !driver->setup || driver->max_speed < USB_SPEED_FULL) return -EINVAL; + /* connect to bus through transceiver */ + if (!IS_ERR_OR_NULL(gpriv->transceiver)) { + ret = otg_set_peripheral(gpriv->transceiver->otg, + &gpriv->gadget); + if (ret) { + dev_err(dev, "%s: can't bind to transceiver\n", + gpriv->gadget.name); + return ret; + } + + /* get vbus using phy versions */ + usbhs_mod_phy_mode(priv); + } + /* first hook up the driver ... */ gpriv->driver = driver; @@ -900,6 +940,10 @@ static int usbhsg_gadget_stop(struct usb_gadget *gadget) struct usbhs_priv *priv = usbhsg_gpriv_to_priv(gpriv); usbhsg_try_stop(priv, USBHSG_STATUS_REGISTERD); + + if (!IS_ERR_OR_NULL(gpriv->transceiver)) + otg_set_peripheral(gpriv->transceiver->otg, NULL); + gpriv->driver = NULL; return 0; @@ -947,12 +991,26 @@ static int usbhsg_set_selfpowered(struct usb_gadget *gadget, int is_self) return 0; } +static int usbhsg_vbus_session(struct usb_gadget *gadget, int is_active) +{ + struct usbhsg_gpriv *gpriv = usbhsg_gadget_to_gpriv(gadget); + struct usbhs_priv *priv = usbhsg_gpriv_to_priv(gpriv); + struct platform_device *pdev = usbhs_priv_to_pdev(priv); + + gpriv->vbus_indirect_value = !!is_active; + + renesas_usbhs_call_notify_hotplug(pdev); + + return 0; +} + static const struct usb_gadget_ops usbhsg_gadget_ops = { .get_frame = usbhsg_get_frame, .set_selfpowered = usbhsg_set_selfpowered, .udc_start = usbhsg_gadget_start, .udc_stop = usbhsg_gadget_stop, .pullup = usbhsg_pullup, + .vbus_session = usbhsg_vbus_session, }; static int usbhsg_start(struct usbhs_priv *priv) @@ -994,6 +1052,10 @@ int usbhs_mod_gadget_probe(struct usbhs_priv *priv) goto usbhs_mod_gadget_probe_err_gpriv; } + gpriv->transceiver = usb_get_phy(USB_PHY_TYPE_UNDEFINED); + dev_info(dev, "%stransceiver found\n", + gpriv->transceiver ? "" : "no "); + /* * CAUTION *