Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1752069AbbGBHi6 (ORCPT ); Thu, 2 Jul 2015 03:38:58 -0400 Received: from relmlor2.renesas.com ([210.160.252.172]:10460 "EHLO relmlie1.idc.renesas.com" rhost-flags-OK-OK-OK-FAIL) by vger.kernel.org with ESMTP id S1750739AbbGBHiv (ORCPT ); Thu, 2 Jul 2015 03:38:51 -0400 X-IronPort-AV: E=Sophos;i="5.15,390,1432566000"; d="scan'208";a="190753704" From: Phil Edworthy To: Yoshihiro Shimoda Cc: Greg Kroah-Hartman , Felipe Balbi , Ulrich Hecht , Kishon Vijay Abraham I , Sergei Shtylyov , Laurent Pinchart , , , , Phil Edworthy X-Mailer: git-send-email 1.9.1 X-TNEFEvaluated: 1 Message-ID: <1435822602-22685-1-git-send-email-phil.edworthy@renesas.com> Date: Thu, 2 Jul 2015 08:36:42 +0100 Subject: [PATCH v2] 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 02.07.2015 09:38:46, Serialize by Router on DU0NOTES13/SERVER/REE(Release 8.5.3 HF466|March 09, 2012) at 02.07.2015 09:38:48, Serialize complete at 02.07.2015 09:38:48 Sender: linux-kernel-owner@vger.kernel.org List-ID: X-Mailing-List: linux-kernel@vger.kernel.org Content-Length: 4425 Lines: 147 These changes allow a PHY driver to trigger a VBUS interrupt and to provide the value of VBUS. Signed-off-by: Phil Edworthy --- v2: - vbus variables changed from int to bool. - dev_info() changed to dev_err() --- drivers/usb/renesas_usbhs/common.h | 2 ++ drivers/usb/renesas_usbhs/mod.c | 3 +++ drivers/usb/renesas_usbhs/mod_gadget.c | 38 ++++++++++++++++++++++++++++++++++ 3 files changed, 43 insertions(+) diff --git a/drivers/usb/renesas_usbhs/common.h b/drivers/usb/renesas_usbhs/common.h index 8c5fc12..478700c 100644 --- a/drivers/usb/renesas_usbhs/common.h +++ b/drivers/usb/renesas_usbhs/common.h @@ -255,6 +255,8 @@ struct usbhs_priv { struct renesas_usbhs_driver_param dparam; struct delayed_work notify_hotplug_work; + bool vbus_is_indirect; + bool vbus_indirect_value; struct platform_device *pdev; struct extcon_dev *edev; diff --git a/drivers/usb/renesas_usbhs/mod.c b/drivers/usb/renesas_usbhs/mod.c index 9a705b1..8a2d3dd 100644 --- a/drivers/usb/renesas_usbhs/mod.c +++ b/drivers/usb/renesas_usbhs/mod.c @@ -42,6 +42,9 @@ static int usbhsm_autonomy_get_vbus(struct platform_device *pdev) { struct usbhs_priv *priv = usbhs_pdev_to_priv(pdev); + if (priv->vbus_is_indirect) + return priv->vbus_indirect_value; + return VBSTS & usbhs_read(priv, INTSTS0); } diff --git a/drivers/usb/renesas_usbhs/mod_gadget.c b/drivers/usb/renesas_usbhs/mod_gadget.c index dc2aa32..51b63f9 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 +51,7 @@ struct usbhsg_gpriv { int uep_size; struct usb_gadget_driver *driver; + struct usb_phy *transceiver; u32 status; #define USBHSG_STATUS_STARTED (1 << 0) @@ -882,6 +884,8 @@ 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 || @@ -891,6 +895,17 @@ static int usbhsg_gadget_start(struct usb_gadget *gadget, /* first hook up the driver ... */ gpriv->driver = driver; + /* 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; + } + } + return usbhsg_try_start(priv, USBHSG_STATUS_REGISTERD); } @@ -900,6 +915,10 @@ 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)) + (void) otg_set_peripheral(gpriv->transceiver->otg, NULL); + gpriv->driver = NULL; return 0; @@ -947,12 +966,27 @@ 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); + + priv->vbus_is_indirect = 1; + priv->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 +1028,10 @@ 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, "%s transceiver found\n", + gpriv->transceiver ? "" : "No"); + /* * CAUTION * -- 1.9.1 -- To unsubscribe from this list: send the line "unsubscribe linux-kernel" in the body of a message to majordomo@vger.kernel.org More majordomo info at http://vger.kernel.org/majordomo-info.html Please read the FAQ at http://www.tux.org/lkml/