Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S934456AbbGHKUo (ORCPT ); Wed, 8 Jul 2015 06:20:44 -0400 Received: from devils.ext.ti.com ([198.47.26.153]:48828 "EHLO devils.ext.ti.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S934334AbbGHKUX (ORCPT ); Wed, 8 Jul 2015 06:20:23 -0400 From: Roger Quadros To: , , , CC: , , , , , , , , Roger Quadros Subject: [PATCH v3 08/11] usb: hcd: Adapt to OTG core Date: Wed, 8 Jul 2015 13:19:34 +0300 Message-ID: <1436350777-28056-9-git-send-email-rogerq@ti.com> X-Mailer: git-send-email 2.1.4 In-Reply-To: <1436350777-28056-1-git-send-email-rogerq@ti.com> References: <1436350777-28056-1-git-send-email-rogerq@ti.com> MIME-Version: 1.0 Content-Type: text/plain Sender: linux-kernel-owner@vger.kernel.org List-ID: X-Mailing-List: linux-kernel@vger.kernel.org Content-Length: 4893 Lines: 147 The existing usb_add/remove_hcd() functionality remains unchanged for non-OTG devices. For OTG devices they only register the HCD with the OTG core. Introduce usb_otg_add/remove_hcd() for use by OTG core. These functions actually add/remove the HCD. Signed-off-by: Roger Quadros --- drivers/usb/common/usb-otg.c | 6 ++--- drivers/usb/core/hcd.c | 55 ++++++++++++++++++++++++++++++++++++++++---- 2 files changed, 53 insertions(+), 8 deletions(-) diff --git a/drivers/usb/common/usb-otg.c b/drivers/usb/common/usb-otg.c index 0379034..1f19001 100644 --- a/drivers/usb/common/usb-otg.c +++ b/drivers/usb/common/usb-otg.c @@ -496,7 +496,7 @@ int usb_otg_kick_fsm(struct device *hcd_gcd_device) mutex_lock(&otg_list_mutex); otgd = usb_otg_device_get_otgd(hcd_gcd_device->parent); if (!otgd) { - dev_err(hcd_gcd_device, "otg: %s: invalid host/gadget device\n", + dev_dbg(hcd_gcd_device, "otg: %s: invalid host/gadget device\n", __func__); mutex_unlock(&otg_list_mutex); return -ENODEV; @@ -678,7 +678,7 @@ int usb_otg_register_gadget(struct usb_gadget *gadget, mutex_lock(&otg_list_mutex); otgd = usb_otg_device_get_otgd(otg_dev); if (!otgd) { - dev_err(otg_dev, "otg: %s: device not registered to otg core\n", + dev_dbg(otg_dev, "otg: %s: device not registered to otg core\n", __func__); mutex_unlock(&otg_list_mutex); return -EINVAL; @@ -724,7 +724,7 @@ int usb_otg_unregister_gadget(struct usb_gadget *gadget) mutex_lock(&otg_list_mutex); otgd = usb_otg_device_get_otgd(otg_dev); if (!otgd) { - dev_err(otg_dev, "otg: %s: device not registered to otg core\n", + dev_dbg(otg_dev, "otg: %s: device not registered to otg core\n", __func__); mutex_unlock(&otg_list_mutex); return -EINVAL; diff --git a/drivers/usb/core/hcd.c b/drivers/usb/core/hcd.c index be5b207..3a19607 100644 --- a/drivers/usb/core/hcd.c +++ b/drivers/usb/core/hcd.c @@ -46,6 +46,7 @@ #include #include #include +#include #include "usb.h" @@ -2622,8 +2623,8 @@ static void usb_put_invalidate_rhdev(struct usb_hcd *hcd) * buffers of consistent memory, register the bus, request the IRQ line, * and call the driver's reset() and start() routines. */ -int usb_add_hcd(struct usb_hcd *hcd, - unsigned int irqnum, unsigned long irqflags) +static int usb_otg_add_hcd(struct usb_hcd *hcd, + unsigned int irqnum, unsigned long irqflags) { int retval; struct usb_device *rhdev; @@ -2828,17 +2829,16 @@ err_phy: } return retval; } -EXPORT_SYMBOL_GPL(usb_add_hcd); /** - * usb_remove_hcd - shutdown processing for generic HCDs + * usb_otg_remove_hcd - shutdown processing for generic HCDs * @hcd: the usb_hcd structure to remove * Context: !in_interrupt() * * Disconnects the root hub, then reverses the effects of usb_add_hcd(), * invoking the HCD's stop() method. */ -void usb_remove_hcd(struct usb_hcd *hcd) +static void usb_otg_remove_hcd(struct usb_hcd *hcd) { struct usb_device *rhdev = hcd->self.root_hub; @@ -2912,6 +2912,51 @@ void usb_remove_hcd(struct usb_hcd *hcd) usb_put_invalidate_rhdev(hcd); } + +static struct otg_hcd_ops otg_hcd_intf = { + .add = usb_otg_add_hcd, + .remove = usb_otg_remove_hcd, +}; + +/** + * usb_add_hcd - finish generic HCD structure initialization and register + * @hcd: the usb_hcd structure to initialize + * @irqnum: Interrupt line to allocate + * @irqflags: Interrupt type flags + * + * Finish the remaining parts of generic HCD initialization: allocate the + * buffers of consistent memory, register the bus, request the IRQ line, + * and call the driver's reset() and start() routines. + * If it is an OTG device then it only registers the HCD with OTG core. + * + */ +int usb_add_hcd(struct usb_hcd *hcd, + unsigned int irqnum, unsigned long irqflags) +{ + /* If OTG device, OTG core takes care of adding HCD */ + if (usb_otg_register_hcd(hcd, irqnum, irqflags, &otg_hcd_intf)) + return usb_otg_add_hcd(hcd, irqnum, irqflags); + + return 0; +} +EXPORT_SYMBOL_GPL(usb_add_hcd); + +/** + * usb_remove_hcd - shutdown processing for generic HCDs + * @hcd: the usb_hcd structure to remove + * Context: !in_interrupt() + * + * Disconnects the root hub, then reverses the effects of usb_add_hcd(), + * invoking the HCD's stop() method. + * If it is an OTG device then it unregisters the HCD from OTG core + * as well. + */ +void usb_remove_hcd(struct usb_hcd *hcd) +{ + /* If OTG device, OTG core takes care of stopping HCD */ + if (usb_otg_unregister_hcd(hcd)) + usb_otg_remove_hcd(hcd); +} EXPORT_SYMBOL_GPL(usb_remove_hcd); void -- 2.1.4 -- 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/