mirror of https://gitee.com/openkylin/linux.git
315 lines
8.0 KiB
C
315 lines
8.0 KiB
C
/*
|
|
* Setup platform devices needed by the Freescale multi-port host
|
|
* and/or dual-role USB controller modules based on the description
|
|
* in flat device tree.
|
|
*
|
|
* 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.
|
|
*/
|
|
|
|
#include <linux/kernel.h>
|
|
#include <linux/platform_device.h>
|
|
#include <linux/fsl_devices.h>
|
|
#include <linux/err.h>
|
|
#include <linux/io.h>
|
|
#include <linux/of_platform.h>
|
|
#include <linux/clk.h>
|
|
#include <linux/module.h>
|
|
|
|
struct fsl_usb2_dev_data {
|
|
char *dr_mode; /* controller mode */
|
|
char *drivers[3]; /* drivers to instantiate for this mode */
|
|
enum fsl_usb2_operating_modes op_mode; /* operating mode */
|
|
};
|
|
|
|
struct fsl_usb2_dev_data dr_mode_data[] __devinitdata = {
|
|
{
|
|
.dr_mode = "host",
|
|
.drivers = { "fsl-ehci", NULL, NULL, },
|
|
.op_mode = FSL_USB2_DR_HOST,
|
|
},
|
|
{
|
|
.dr_mode = "otg",
|
|
.drivers = { "fsl-usb2-otg", "fsl-ehci", "fsl-usb2-udc", },
|
|
.op_mode = FSL_USB2_DR_OTG,
|
|
},
|
|
{
|
|
.dr_mode = "peripheral",
|
|
.drivers = { "fsl-usb2-udc", NULL, NULL, },
|
|
.op_mode = FSL_USB2_DR_DEVICE,
|
|
},
|
|
};
|
|
|
|
struct fsl_usb2_dev_data * __devinit get_dr_mode_data(struct device_node *np)
|
|
{
|
|
const unsigned char *prop;
|
|
int i;
|
|
|
|
prop = of_get_property(np, "dr_mode", NULL);
|
|
if (prop) {
|
|
for (i = 0; i < ARRAY_SIZE(dr_mode_data); i++) {
|
|
if (!strcmp(prop, dr_mode_data[i].dr_mode))
|
|
return &dr_mode_data[i];
|
|
}
|
|
}
|
|
pr_warn("%s: Invalid 'dr_mode' property, fallback to host mode\n",
|
|
np->full_name);
|
|
return &dr_mode_data[0]; /* mode not specified, use host */
|
|
}
|
|
|
|
static enum fsl_usb2_phy_modes __devinit determine_usb_phy(const char *phy_type)
|
|
{
|
|
if (!phy_type)
|
|
return FSL_USB2_PHY_NONE;
|
|
if (!strcasecmp(phy_type, "ulpi"))
|
|
return FSL_USB2_PHY_ULPI;
|
|
if (!strcasecmp(phy_type, "utmi"))
|
|
return FSL_USB2_PHY_UTMI;
|
|
if (!strcasecmp(phy_type, "utmi_wide"))
|
|
return FSL_USB2_PHY_UTMI_WIDE;
|
|
if (!strcasecmp(phy_type, "serial"))
|
|
return FSL_USB2_PHY_SERIAL;
|
|
|
|
return FSL_USB2_PHY_NONE;
|
|
}
|
|
|
|
struct platform_device * __devinit fsl_usb2_device_register(
|
|
struct platform_device *ofdev,
|
|
struct fsl_usb2_platform_data *pdata,
|
|
const char *name, int id)
|
|
{
|
|
struct platform_device *pdev;
|
|
const struct resource *res = ofdev->resource;
|
|
unsigned int num = ofdev->num_resources;
|
|
int retval;
|
|
|
|
pdev = platform_device_alloc(name, id);
|
|
if (!pdev) {
|
|
retval = -ENOMEM;
|
|
goto error;
|
|
}
|
|
|
|
pdev->dev.parent = &ofdev->dev;
|
|
|
|
pdev->dev.coherent_dma_mask = ofdev->dev.coherent_dma_mask;
|
|
pdev->dev.dma_mask = &pdev->archdata.dma_mask;
|
|
*pdev->dev.dma_mask = *ofdev->dev.dma_mask;
|
|
|
|
retval = platform_device_add_data(pdev, pdata, sizeof(*pdata));
|
|
if (retval)
|
|
goto error;
|
|
|
|
if (num) {
|
|
retval = platform_device_add_resources(pdev, res, num);
|
|
if (retval)
|
|
goto error;
|
|
}
|
|
|
|
retval = platform_device_add(pdev);
|
|
if (retval)
|
|
goto error;
|
|
|
|
return pdev;
|
|
|
|
error:
|
|
platform_device_put(pdev);
|
|
return ERR_PTR(retval);
|
|
}
|
|
|
|
static const struct of_device_id fsl_usb2_mph_dr_of_match[];
|
|
|
|
static int __devinit fsl_usb2_mph_dr_of_probe(struct platform_device *ofdev)
|
|
{
|
|
struct device_node *np = ofdev->dev.of_node;
|
|
struct platform_device *usb_dev;
|
|
struct fsl_usb2_platform_data data, *pdata;
|
|
struct fsl_usb2_dev_data *dev_data;
|
|
const struct of_device_id *match;
|
|
const unsigned char *prop;
|
|
static unsigned int idx;
|
|
int i;
|
|
|
|
if (!of_device_is_available(np))
|
|
return -ENODEV;
|
|
|
|
match = of_match_device(fsl_usb2_mph_dr_of_match, &ofdev->dev);
|
|
if (!match)
|
|
return -ENODEV;
|
|
|
|
pdata = &data;
|
|
if (match->data)
|
|
memcpy(pdata, match->data, sizeof(data));
|
|
else
|
|
memset(pdata, 0, sizeof(data));
|
|
|
|
dev_data = get_dr_mode_data(np);
|
|
|
|
if (of_device_is_compatible(np, "fsl-usb2-mph")) {
|
|
if (of_get_property(np, "port0", NULL))
|
|
pdata->port_enables |= FSL_USB2_PORT0_ENABLED;
|
|
|
|
if (of_get_property(np, "port1", NULL))
|
|
pdata->port_enables |= FSL_USB2_PORT1_ENABLED;
|
|
|
|
pdata->operating_mode = FSL_USB2_MPH_HOST;
|
|
} else {
|
|
if (of_get_property(np, "fsl,invert-drvvbus", NULL))
|
|
pdata->invert_drvvbus = 1;
|
|
|
|
if (of_get_property(np, "fsl,invert-pwr-fault", NULL))
|
|
pdata->invert_pwr_fault = 1;
|
|
|
|
/* setup mode selected in the device tree */
|
|
pdata->operating_mode = dev_data->op_mode;
|
|
}
|
|
|
|
prop = of_get_property(np, "phy_type", NULL);
|
|
pdata->phy_mode = determine_usb_phy(prop);
|
|
|
|
for (i = 0; i < ARRAY_SIZE(dev_data->drivers); i++) {
|
|
if (!dev_data->drivers[i])
|
|
continue;
|
|
usb_dev = fsl_usb2_device_register(ofdev, pdata,
|
|
dev_data->drivers[i], idx);
|
|
if (IS_ERR(usb_dev)) {
|
|
dev_err(&ofdev->dev, "Can't register usb device\n");
|
|
return PTR_ERR(usb_dev);
|
|
}
|
|
}
|
|
idx++;
|
|
return 0;
|
|
}
|
|
|
|
static int __devexit __unregister_subdev(struct device *dev, void *d)
|
|
{
|
|
platform_device_unregister(to_platform_device(dev));
|
|
return 0;
|
|
}
|
|
|
|
static int __devexit fsl_usb2_mph_dr_of_remove(struct platform_device *ofdev)
|
|
{
|
|
device_for_each_child(&ofdev->dev, NULL, __unregister_subdev);
|
|
return 0;
|
|
}
|
|
|
|
#ifdef CONFIG_PPC_MPC512x
|
|
|
|
#define USBGENCTRL 0x200 /* NOTE: big endian */
|
|
#define GC_WU_INT_CLR (1 << 5) /* Wakeup int clear */
|
|
#define GC_ULPI_SEL (1 << 4) /* ULPI i/f select (usb0 only)*/
|
|
#define GC_PPP (1 << 3) /* Inv. Port Power Polarity */
|
|
#define GC_PFP (1 << 2) /* Inv. Power Fault Polarity */
|
|
#define GC_WU_ULPI_EN (1 << 1) /* Wakeup on ULPI event */
|
|
#define GC_WU_IE (1 << 1) /* Wakeup interrupt enable */
|
|
|
|
#define ISIPHYCTRL 0x204 /* NOTE: big endian */
|
|
#define PHYCTRL_PHYE (1 << 4) /* On-chip UTMI PHY enable */
|
|
#define PHYCTRL_BSENH (1 << 3) /* Bit Stuff Enable High */
|
|
#define PHYCTRL_BSEN (1 << 2) /* Bit Stuff Enable */
|
|
#define PHYCTRL_LSFE (1 << 1) /* Line State Filter Enable */
|
|
#define PHYCTRL_PXE (1 << 0) /* PHY oscillator enable */
|
|
|
|
int fsl_usb2_mpc5121_init(struct platform_device *pdev)
|
|
{
|
|
struct fsl_usb2_platform_data *pdata = pdev->dev.platform_data;
|
|
struct clk *clk;
|
|
char clk_name[10];
|
|
int base, clk_num;
|
|
|
|
base = pdev->resource->start & 0xf000;
|
|
if (base == 0x3000)
|
|
clk_num = 1;
|
|
else if (base == 0x4000)
|
|
clk_num = 2;
|
|
else
|
|
return -ENODEV;
|
|
|
|
snprintf(clk_name, sizeof(clk_name), "usb%d_clk", clk_num);
|
|
clk = clk_get(&pdev->dev, clk_name);
|
|
if (IS_ERR(clk)) {
|
|
dev_err(&pdev->dev, "failed to get clk\n");
|
|
return PTR_ERR(clk);
|
|
}
|
|
|
|
clk_enable(clk);
|
|
pdata->clk = clk;
|
|
|
|
if (pdata->phy_mode == FSL_USB2_PHY_UTMI_WIDE) {
|
|
u32 reg = 0;
|
|
|
|
if (pdata->invert_drvvbus)
|
|
reg |= GC_PPP;
|
|
|
|
if (pdata->invert_pwr_fault)
|
|
reg |= GC_PFP;
|
|
|
|
out_be32(pdata->regs + ISIPHYCTRL, PHYCTRL_PHYE | PHYCTRL_PXE);
|
|
out_be32(pdata->regs + USBGENCTRL, reg);
|
|
}
|
|
return 0;
|
|
}
|
|
|
|
static void fsl_usb2_mpc5121_exit(struct platform_device *pdev)
|
|
{
|
|
struct fsl_usb2_platform_data *pdata = pdev->dev.platform_data;
|
|
|
|
pdata->regs = NULL;
|
|
|
|
if (pdata->clk) {
|
|
clk_disable(pdata->clk);
|
|
clk_put(pdata->clk);
|
|
}
|
|
}
|
|
|
|
static struct fsl_usb2_platform_data fsl_usb2_mpc5121_pd = {
|
|
.big_endian_desc = 1,
|
|
.big_endian_mmio = 1,
|
|
.es = 1,
|
|
.have_sysif_regs = 0,
|
|
.le_setup_buf = 1,
|
|
.init = fsl_usb2_mpc5121_init,
|
|
.exit = fsl_usb2_mpc5121_exit,
|
|
};
|
|
#endif /* CONFIG_PPC_MPC512x */
|
|
|
|
static struct fsl_usb2_platform_data fsl_usb2_mpc8xxx_pd = {
|
|
.have_sysif_regs = 1,
|
|
};
|
|
|
|
static const struct of_device_id fsl_usb2_mph_dr_of_match[] = {
|
|
{ .compatible = "fsl-usb2-mph", .data = &fsl_usb2_mpc8xxx_pd, },
|
|
{ .compatible = "fsl-usb2-dr", .data = &fsl_usb2_mpc8xxx_pd, },
|
|
#ifdef CONFIG_PPC_MPC512x
|
|
{ .compatible = "fsl,mpc5121-usb2-dr", .data = &fsl_usb2_mpc5121_pd, },
|
|
#endif
|
|
{},
|
|
};
|
|
|
|
static struct platform_driver fsl_usb2_mph_dr_driver = {
|
|
.driver = {
|
|
.name = "fsl-usb2-mph-dr",
|
|
.owner = THIS_MODULE,
|
|
.of_match_table = fsl_usb2_mph_dr_of_match,
|
|
},
|
|
.probe = fsl_usb2_mph_dr_of_probe,
|
|
.remove = __devexit_p(fsl_usb2_mph_dr_of_remove),
|
|
};
|
|
|
|
static int __init fsl_usb2_mph_dr_init(void)
|
|
{
|
|
return platform_driver_register(&fsl_usb2_mph_dr_driver);
|
|
}
|
|
module_init(fsl_usb2_mph_dr_init);
|
|
|
|
static void __exit fsl_usb2_mph_dr_exit(void)
|
|
{
|
|
platform_driver_unregister(&fsl_usb2_mph_dr_driver);
|
|
}
|
|
module_exit(fsl_usb2_mph_dr_exit);
|
|
|
|
MODULE_DESCRIPTION("FSL MPH DR OF devices driver");
|
|
MODULE_AUTHOR("Anatolij Gustschin <agust@denx.de>");
|
|
MODULE_LICENSE("GPL");
|