mirror of
https://github.com/torvalds/linux.git
synced 2024-11-24 13:11:40 +00:00
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
|
||||
bool "Blackfin"
|
||||
depends on (BF54x && !BF544) || (BF52x && ! BF522 && !BF523)
|
||||
|
||||
config USB_MUSB_UX500
|
||||
bool "U8500 and U5500"
|
||||
depends on (ARCH_U8500 && AB8500_USB) || (ARCH_U5500)
|
||||
|
||||
endchoice
|
||||
|
||||
choice
|
||||
|
||||
@ -19,6 +19,7 @@ obj-$(CONFIG_USB_MUSB_TUSB6010) += tusb6010.o
|
||||
obj-$(CONFIG_USB_MUSB_DAVINCI) += davinci.o
|
||||
obj-$(CONFIG_USB_MUSB_DA8XX) += da8xx.o
|
||||
obj-$(CONFIG_USB_MUSB_BLACKFIN) += blackfin.o
|
||||
obj-$(CONFIG_USB_MUSB_UX500) += ux500.o
|
||||
|
||||
# the kconfig must guarantee that only one of the
|
||||
# possible I/O schemes will be enabled at a time ...
|
||||
|
||||
@ -1069,6 +1069,8 @@ static void musb_shutdown(struct platform_device *pdev)
|
||||
#if defined(CONFIG_USB_MUSB_TUSB6010) || defined(CONFIG_USB_MUSB_OMAP2PLUS) \
|
||||
|| defined(CONFIG_USB_MUSB_AM35X)
|
||||
static ushort __initdata fifo_mode = 4;
|
||||
#elif defined(CONFIG_USB_MUSB_UX500)
|
||||
static ushort __initdata fifo_mode = 5;
|
||||
#else
|
||||
static ushort __initdata fifo_mode = 2;
|
||||
#endif
|
||||
@ -1539,7 +1541,8 @@ static int __init musb_core_init(u16 musb_type, struct musb *musb)
|
||||
/*-------------------------------------------------------------------------*/
|
||||
|
||||
#if defined(CONFIG_ARCH_OMAP2430) || defined(CONFIG_ARCH_OMAP3430) || \
|
||||
defined(CONFIG_ARCH_OMAP4)
|
||||
defined(CONFIG_ARCH_OMAP4) || defined(CONFIG_ARCH_U8500) || \
|
||||
defined(CONFIG_ARCH_U5500)
|
||||
|
||||
static irqreturn_t generic_interrupt(int irq, void *__hci)
|
||||
{
|
||||
|
||||
216
drivers/usb/musb/ux500.c
Normal file
216
drivers/usb/musb/ux500.c
Normal file
@ -0,0 +1,216 @@
|
||||
/*
|
||||
* Copyright (C) 2010 ST-Ericsson AB
|
||||
* Mian Yousaf Kaukab <mian.yousaf.kaukab@stericsson.com>
|
||||
*
|
||||
* Based on omap2430.c
|
||||
*
|
||||
* This program is free software; you can redistribute it and/or modify
|
||||
* it under the terms of the GNU General Public License as published by
|
||||
* the Free Software Foundation; either version 2 of the License, or
|
||||
* (at your option) any later version.
|
||||
*
|
||||
* This program is distributed in the hope that it will be useful,
|
||||
* but WITHOUT ANY WARRANTY; without even the implied warranty of
|
||||
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
|
||||
* GNU General Public License for more details.
|
||||
*
|
||||
* You should have received a copy of the GNU General Public License
|
||||
* along with this program; if not, write to the Free Software
|
||||
* Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.
|
||||
*/
|
||||
|
||||
#include <linux/module.h>
|
||||
#include <linux/kernel.h>
|
||||
#include <linux/init.h>
|
||||
#include <linux/clk.h>
|
||||
#include <linux/io.h>
|
||||
#include <linux/platform_device.h>
|
||||
|
||||
#include "musb_core.h"
|
||||
|
||||
struct ux500_glue {
|
||||
struct device *dev;
|
||||
struct platform_device *musb;
|
||||
struct clk *clk;
|
||||
};
|
||||
#define glue_to_musb(g) platform_get_drvdata(g->musb)
|
||||
|
||||
static int ux500_musb_init(struct musb *musb)
|
||||
{
|
||||
musb->xceiv = otg_get_transceiver();
|
||||
if (!musb->xceiv) {
|
||||
pr_err("HS USB OTG: no transceiver configured\n");
|
||||
return -ENODEV;
|
||||
}
|
||||
|
||||
return 0;
|
||||
}
|
||||
|
||||
static int ux500_musb_exit(struct musb *musb)
|
||||
{
|
||||
otg_put_transceiver(musb->xceiv);
|
||||
|
||||
return 0;
|
||||
}
|
||||
|
||||
static const struct musb_platform_ops ux500_ops = {
|
||||
.init = ux500_musb_init,
|
||||
.exit = ux500_musb_exit,
|
||||
};
|
||||
|
||||
static int __init ux500_probe(struct platform_device *pdev)
|
||||
{
|
||||
struct musb_hdrc_platform_data *pdata = pdev->dev.platform_data;
|
||||
struct platform_device *musb;
|
||||
struct ux500_glue *glue;
|
||||
struct clk *clk;
|
||||
|
||||
int ret = -ENOMEM;
|
||||
|
||||
glue = kzalloc(sizeof(*glue), GFP_KERNEL);
|
||||
if (!glue) {
|
||||
dev_err(&pdev->dev, "failed to allocate glue context\n");
|
||||
goto err0;
|
||||
}
|
||||
|
||||
musb = platform_device_alloc("musb-hdrc", -1);
|
||||
if (!musb) {
|
||||
dev_err(&pdev->dev, "failed to allocate musb device\n");
|
||||
goto err1;
|
||||
}
|
||||
|
||||
clk = clk_get(&pdev->dev, "usb");
|
||||
if (IS_ERR(clk)) {
|
||||
dev_err(&pdev->dev, "failed to get clock\n");
|
||||
ret = PTR_ERR(clk);
|
||||
goto err2;
|
||||
}
|
||||
|
||||
ret = clk_enable(clk);
|
||||
if (ret) {
|
||||
dev_err(&pdev->dev, "failed to enable clock\n");
|
||||
goto err3;
|
||||
}
|
||||
|
||||
musb->dev.parent = &pdev->dev;
|
||||
|
||||
glue->dev = &pdev->dev;
|
||||
glue->musb = musb;
|
||||
glue->clk = clk;
|
||||
|
||||
pdata->platform_ops = &ux500_ops;
|
||||
|
||||
platform_set_drvdata(pdev, glue);
|
||||
|
||||
ret = platform_device_add_resources(musb, pdev->resource,
|
||||
pdev->num_resources);
|
||||
if (ret) {
|
||||
dev_err(&pdev->dev, "failed to add resources\n");
|
||||
goto err4;
|
||||
}
|
||||
|
||||
ret = platform_device_add_data(musb, pdata, sizeof(*pdata));
|
||||
if (ret) {
|
||||
dev_err(&pdev->dev, "failed to add platform_data\n");
|
||||
goto err4;
|
||||
}
|
||||
|
||||
ret = platform_device_add(musb);
|
||||
if (ret) {
|
||||
dev_err(&pdev->dev, "failed to register musb device\n");
|
||||
goto err4;
|
||||
}
|
||||
|
||||
return 0;
|
||||
|
||||
err4:
|
||||
clk_disable(clk);
|
||||
|
||||
err3:
|
||||
clk_put(clk);
|
||||
|
||||
err2:
|
||||
platform_device_put(musb);
|
||||
|
||||
err1:
|
||||
kfree(glue);
|
||||
|
||||
err0:
|
||||
return ret;
|
||||
}
|
||||
|
||||
static int __exit ux500_remove(struct platform_device *pdev)
|
||||
{
|
||||
struct ux500_glue *glue = platform_get_drvdata(pdev);
|
||||
|
||||
platform_device_del(glue->musb);
|
||||
platform_device_put(glue->musb);
|
||||
clk_disable(glue->clk);
|
||||
clk_put(glue->clk);
|
||||
kfree(glue);
|
||||
|
||||
return 0;
|
||||
}
|
||||
|
||||
#ifdef CONFIG_PM
|
||||
static int ux500_suspend(struct device *dev)
|
||||
{
|
||||
struct ux500_glue *glue = dev_get_drvdata(dev);
|
||||
struct musb *musb = glue_to_musb(glue);
|
||||
|
||||
otg_set_suspend(musb->xceiv, 1);
|
||||
clk_disable(glue->clk);
|
||||
|
||||
return 0;
|
||||
}
|
||||
|
||||
static int ux500_resume(struct device *dev)
|
||||
{
|
||||
struct ux500_glue *glue = dev_get_drvdata(dev);
|
||||
struct musb *musb = glue_to_musb(glue);
|
||||
int ret;
|
||||
|
||||
ret = clk_enable(glue->clk);
|
||||
if (ret) {
|
||||
dev_err(dev, "failed to enable clock\n");
|
||||
return ret;
|
||||
}
|
||||
|
||||
otg_set_suspend(musb->xceiv, 0);
|
||||
|
||||
return 0;
|
||||
}
|
||||
|
||||
static const struct dev_pm_ops ux500_pm_ops = {
|
||||
.suspend = ux500_suspend,
|
||||
.resume = ux500_resume,
|
||||
};
|
||||
|
||||
#define DEV_PM_OPS (&ux500_pm_ops)
|
||||
#else
|
||||
#define DEV_PM_OPS NULL
|
||||
#endif
|
||||
|
||||
static struct platform_driver ux500_driver = {
|
||||
.remove = __exit_p(ux500_remove),
|
||||
.driver = {
|
||||
.name = "musb-ux500",
|
||||
.pm = DEV_PM_OPS,
|
||||
},
|
||||
};
|
||||
|
||||
MODULE_DESCRIPTION("UX500 MUSB Glue Layer");
|
||||
MODULE_AUTHOR("Mian Yousaf Kaukab <mian.yousaf.kaukab@stericsson.com>");
|
||||
MODULE_LICENSE("GPL v2");
|
||||
|
||||
static int __init ux500_init(void)
|
||||
{
|
||||
return platform_driver_probe(&ux500_driver, ux500_probe);
|
||||
}
|
||||
subsys_initcall(ux500_init);
|
||||
|
||||
static void __exit ux500_exit(void)
|
||||
{
|
||||
platform_driver_unregister(&ux500_driver);
|
||||
}
|
||||
module_exit(ux500_exit);
|
||||
Loading…
Reference in New Issue
Block a user