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usb: musb: add support for ux500 platform
Initial support for u8500 and u5500 platform. Signed-off-by: Mian Yousaf Kaukab <mian.yousaf.kaukab@stericsson.com> Acked-by: Linus Walleij <linus.walleij@stericsson.com> Signed-off-by: Felipe Balbi <balbi@ti.com>
This commit is contained in:
Mian Yousaf Kaukab
Felipe Balbi
parent
a9c037832e
commit
4bc36fd31b
@ -60,6 +60,10 @@ config USB_MUSB_BLACKFIN
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bool "Blackfin"
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depends on (BF54x && !BF544) || (BF52x && ! BF522 && !BF523)
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config USB_MUSB_UX500
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bool "U8500 and U5500"
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depends on (ARCH_U8500 && AB8500_USB) || (ARCH_U5500)
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endchoice
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choice
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@ -19,6 +19,7 @@ obj-$(CONFIG_USB_MUSB_TUSB6010) += tusb6010.o
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obj-$(CONFIG_USB_MUSB_DAVINCI) += davinci.o
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obj-$(CONFIG_USB_MUSB_DA8XX) += da8xx.o
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obj-$(CONFIG_USB_MUSB_BLACKFIN) += blackfin.o
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obj-$(CONFIG_USB_MUSB_UX500) += ux500.o
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# the kconfig must guarantee that only one of the
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# possible I/O schemes will be enabled at a time ...
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@ -1069,6 +1069,8 @@ static void musb_shutdown(struct platform_device *pdev)
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#if defined(CONFIG_USB_MUSB_TUSB6010) || defined(CONFIG_USB_MUSB_OMAP2PLUS) \
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|| defined(CONFIG_USB_MUSB_AM35X)
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static ushort __initdata fifo_mode = 4;
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#elif defined(CONFIG_USB_MUSB_UX500)
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static ushort __initdata fifo_mode = 5;
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#else
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static ushort __initdata fifo_mode = 2;
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#endif
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@ -1539,7 +1541,8 @@ static int __init musb_core_init(u16 musb_type, struct musb *musb)
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/*-------------------------------------------------------------------------*/
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#if defined(CONFIG_ARCH_OMAP2430) || defined(CONFIG_ARCH_OMAP3430) || \
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defined(CONFIG_ARCH_OMAP4)
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defined(CONFIG_ARCH_OMAP4) || defined(CONFIG_ARCH_U8500) || \
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defined(CONFIG_ARCH_U5500)
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static irqreturn_t generic_interrupt(int irq, void *__hci)
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{
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216
drivers/usb/musb/ux500.c
Normal file
216
drivers/usb/musb/ux500.c
Normal file
@ -0,0 +1,216 @@
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/*
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* Copyright (C) 2010 ST-Ericsson AB
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* Mian Yousaf Kaukab <mian.yousaf.kaukab@stericsson.com>
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*
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* Based on omap2430.c
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*
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* This program is free software; you can redistribute it and/or modify
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* it under the terms of the GNU General Public License as published by
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* the Free Software Foundation; either version 2 of the License, or
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* (at your option) any later version.
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*
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* This program is distributed in the hope that it will be useful,
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* but WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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* GNU General Public License for more details.
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*
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* You should have received a copy of the GNU General Public License
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* along with this program; if not, write to the Free Software
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* Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.
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*/
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#include <linux/module.h>
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#include <linux/kernel.h>
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#include <linux/init.h>
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#include <linux/clk.h>
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#include <linux/io.h>
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#include <linux/platform_device.h>
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#include "musb_core.h"
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struct ux500_glue {
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struct device *dev;
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struct platform_device *musb;
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struct clk *clk;
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};
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#define glue_to_musb(g) platform_get_drvdata(g->musb)
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static int ux500_musb_init(struct musb *musb)
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{
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musb->xceiv = otg_get_transceiver();
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if (!musb->xceiv) {
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pr_err("HS USB OTG: no transceiver configured\n");
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return -ENODEV;
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}
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return 0;
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}
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static int ux500_musb_exit(struct musb *musb)
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{
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otg_put_transceiver(musb->xceiv);
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return 0;
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}
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static const struct musb_platform_ops ux500_ops = {
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.init = ux500_musb_init,
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.exit = ux500_musb_exit,
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};
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static int __init ux500_probe(struct platform_device *pdev)
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{
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struct musb_hdrc_platform_data *pdata = pdev->dev.platform_data;
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struct platform_device *musb;
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struct ux500_glue *glue;
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struct clk *clk;
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int ret = -ENOMEM;
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glue = kzalloc(sizeof(*glue), GFP_KERNEL);
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if (!glue) {
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dev_err(&pdev->dev, "failed to allocate glue context\n");
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goto err0;
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}
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musb = platform_device_alloc("musb-hdrc", -1);
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if (!musb) {
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dev_err(&pdev->dev, "failed to allocate musb device\n");
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goto err1;
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}
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clk = clk_get(&pdev->dev, "usb");
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if (IS_ERR(clk)) {
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dev_err(&pdev->dev, "failed to get clock\n");
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ret = PTR_ERR(clk);
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goto err2;
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}
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ret = clk_enable(clk);
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if (ret) {
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dev_err(&pdev->dev, "failed to enable clock\n");
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goto err3;
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}
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musb->dev.parent = &pdev->dev;
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glue->dev = &pdev->dev;
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glue->musb = musb;
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glue->clk = clk;
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pdata->platform_ops = &ux500_ops;
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platform_set_drvdata(pdev, glue);
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ret = platform_device_add_resources(musb, pdev->resource,
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pdev->num_resources);
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if (ret) {
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dev_err(&pdev->dev, "failed to add resources\n");
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goto err4;
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}
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ret = platform_device_add_data(musb, pdata, sizeof(*pdata));
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if (ret) {
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dev_err(&pdev->dev, "failed to add platform_data\n");
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goto err4;
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}
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ret = platform_device_add(musb);
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if (ret) {
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dev_err(&pdev->dev, "failed to register musb device\n");
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goto err4;
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}
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return 0;
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err4:
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clk_disable(clk);
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err3:
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clk_put(clk);
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err2:
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platform_device_put(musb);
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err1:
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kfree(glue);
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err0:
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return ret;
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}
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static int __exit ux500_remove(struct platform_device *pdev)
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{
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struct ux500_glue *glue = platform_get_drvdata(pdev);
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platform_device_del(glue->musb);
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platform_device_put(glue->musb);
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clk_disable(glue->clk);
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clk_put(glue->clk);
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kfree(glue);
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return 0;
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}
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#ifdef CONFIG_PM
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static int ux500_suspend(struct device *dev)
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{
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struct ux500_glue *glue = dev_get_drvdata(dev);
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struct musb *musb = glue_to_musb(glue);
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otg_set_suspend(musb->xceiv, 1);
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clk_disable(glue->clk);
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return 0;
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}
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static int ux500_resume(struct device *dev)
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{
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struct ux500_glue *glue = dev_get_drvdata(dev);
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struct musb *musb = glue_to_musb(glue);
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int ret;
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ret = clk_enable(glue->clk);
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if (ret) {
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dev_err(dev, "failed to enable clock\n");
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return ret;
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}
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otg_set_suspend(musb->xceiv, 0);
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return 0;
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}
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static const struct dev_pm_ops ux500_pm_ops = {
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.suspend = ux500_suspend,
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.resume = ux500_resume,
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};
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#define DEV_PM_OPS (&ux500_pm_ops)
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#else
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#define DEV_PM_OPS NULL
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#endif
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static struct platform_driver ux500_driver = {
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.remove = __exit_p(ux500_remove),
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.driver = {
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.name = "musb-ux500",
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.pm = DEV_PM_OPS,
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},
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};
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MODULE_DESCRIPTION("UX500 MUSB Glue Layer");
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MODULE_AUTHOR("Mian Yousaf Kaukab <mian.yousaf.kaukab@stericsson.com>");
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MODULE_LICENSE("GPL v2");
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static int __init ux500_init(void)
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{
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return platform_driver_probe(&ux500_driver, ux500_probe);
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}
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subsys_initcall(ux500_init);
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static void __exit ux500_exit(void)
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{
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platform_driver_unregister(&ux500_driver);
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}
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module_exit(ux500_exit);
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