usb: dwc3: omap: distinguish between SW and HW modes (9962444f) · Commits · 戴 / test

drivers/usb/dwc3/dwc3-omap.c

+22 −0

Original line number	Diff line number	Diff line
		@@ -42,6 +42,7 @@
		#include <linux/interrupt.h>
		#include <linux/spinlock.h>
		#include <linux/platform_device.h>
		#include <linux/platform_data/dwc3-omap.h>
		#include <linux/dma-mapping.h>
		#include <linux/ioport.h>
		#include <linux/io.h>
		@@ -193,6 +194,7 @@ static irqreturn_t dwc3_omap_interrupt(int irq, void *_omap)

		static int __devinit dwc3_omap_probe(struct platform_device *pdev)
		{
		struct dwc3_omap_data *pdata = pdev->dev.platform_data;
		struct platform_device *dwc3;
		struct dwc3_omap *omap;
		struct resource *res;
		@@ -258,6 +260,26 @@ static int __devinit dwc3_omap_probe(struct platform_device *pdev)
		omap->base = base;
		omap->dwc3 = dwc3;

		reg = dwc3_readl(omap->base, USBOTGSS_UTMI_OTG_STATUS);

		if (!pdata) {
		dev_dbg(&pdev->dev, "missing platform data\n");
		} else {
		switch (pdata->utmi_mode) {
		case DWC3_OMAP_UTMI_MODE_SW:
		reg \|= USBOTGSS_UTMI_OTG_STATUS_SW_MODE;
		break;
		case DWC3_OMAP_UTMI_MODE_HW:
		reg &= ~USBOTGSS_UTMI_OTG_STATUS_SW_MODE;
		break;
		default:
		dev_dbg(&pdev->dev, "UNKNOWN utmi mode %d\n",
		pdata->utmi_mode);
		}
		}

		dwc3_writel(omap->base, USBOTGSS_UTMI_OTG_STATUS, reg);

		/* check the DMA Status */
		reg = dwc3_readl(omap->base, USBOTGSS_SYSCONFIG);
		omap->dma_status = !!(reg & USBOTGSS_SYSCONFIG_DMADISABLE);

include/linux/platform_data/dwc3-omap.h

0 → 100644

+47 −0

Original line number	Diff line number	Diff line
		/**
		* dwc3-omap.h - OMAP Specific Glue layer, header.
		*
		* Copyright (C) 2010-2011 Texas Instruments Incorporated - http://www.ti.com
		* All rights reserved.
		*
		* Author: Felipe Balbi <balbi@ti.com>
		*
		* Redistribution and use in source and binary forms, with or without
		* modification, are permitted provided that the following conditions
		* are met:
		* 1. Redistributions of source code must retain the above copyright
		* notice, this list of conditions, and the following disclaimer,
		* without modification.
		* 2. Redistributions in binary form must reproduce the above copyright
		* notice, this list of conditions and the following disclaimer in the
		* documentation and/or other materials provided with the distribution.
		* 3. The names of the above-listed copyright holders may not be used
		* to endorse or promote products derived from this software without
		* specific prior written permission.
		*
		* ALTERNATIVELY, this software may be distributed under the terms of the
		* GNU General Public License ("GPL") version 2, as published by the Free
		* Software Foundation.
		*
		* THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS
		* IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO,
		* THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
		* PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT OWNER OR
		* CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL,
		* EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO,
		* PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR
		* PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF
		* LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING
		* NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS
		* SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
		*/

		enum dwc3_omap_utmi_mode {
		DWC3_OMAP_UTMI_MODE_UNKNOWN = 0,
		DWC3_OMAP_UTMI_MODE_HW,
		DWC3_OMAP_UTMI_MODE_SW,
		};

		struct dwc3_omap_data {
		enum dwc3_omap_utmi_mode utmi_mode;
		};

Admin message