/*
- * SAMSUNG S5P USB HOST EHCI Controller
+ * SAMSUNG EXYNOS USB HOST EHCI Controller
*
* Copyright (C) 2011 Samsung Electronics Co.Ltd
* Author: Jingoo Han <jg1.han@samsung.com>
#include <linux/of.h>
#include <linux/of_gpio.h>
#include <linux/platform_device.h>
-#include <linux/platform_data/usb-ehci-s5p.h>
#include <linux/usb/phy.h>
#include <linux/usb/samsung_usb_phy.h>
#include <linux/usb.h>
#include "ehci.h"
-#define DRIVER_DESC "EHCI s5p driver"
+#define DRIVER_DESC "EHCI EXYNOS driver"
#define EHCI_INSNREG00(base) (base + 0x90)
#define EHCI_INSNREG00_ENA_INCR16 (0x1 << 25)
(EHCI_INSNREG00_ENA_INCR16 | EHCI_INSNREG00_ENA_INCR8 | \
EHCI_INSNREG00_ENA_INCR4 | EHCI_INSNREG00_ENA_INCRX_ALIGN)
-static const char hcd_name[] = "ehci-s5p";
-static struct hc_driver __read_mostly s5p_ehci_hc_driver;
+static const char hcd_name[] = "ehci-exynos";
+static struct hc_driver __read_mostly exynos_ehci_hc_driver;
-struct s5p_ehci_hcd {
+struct exynos_ehci_hcd {
struct clk *clk;
struct usb_phy *phy;
struct usb_otg *otg;
- struct s5p_ehci_platdata *pdata;
};
-static struct s5p_ehci_platdata empty_platdata;
+#define to_exynos_ehci(hcd) (struct exynos_ehci_hcd *)(hcd_to_ehci(hcd)->priv)
-#define to_s5p_ehci(hcd) (struct s5p_ehci_hcd *)(hcd_to_ehci(hcd)->priv)
-
-static void s5p_setup_vbus_gpio(struct platform_device *pdev)
+static void exynos_setup_vbus_gpio(struct platform_device *pdev)
{
struct device *dev = &pdev->dev;
int err;
dev_err(dev, "can't request ehci vbus gpio %d", gpio);
}
-static int s5p_ehci_probe(struct platform_device *pdev)
+static int exynos_ehci_probe(struct platform_device *pdev)
{
- struct s5p_ehci_platdata *pdata = dev_get_platdata(&pdev->dev);
- struct s5p_ehci_hcd *s5p_ehci;
+ struct exynos_ehci_hcd *exynos_ehci;
struct usb_hcd *hcd;
struct ehci_hcd *ehci;
struct resource *res;
if (err)
return err;
- s5p_setup_vbus_gpio(pdev);
+ exynos_setup_vbus_gpio(pdev);
- hcd = usb_create_hcd(&s5p_ehci_hc_driver,
+ hcd = usb_create_hcd(&exynos_ehci_hc_driver,
&pdev->dev, dev_name(&pdev->dev));
if (!hcd) {
dev_err(&pdev->dev, "Unable to create HCD\n");
return -ENOMEM;
}
- s5p_ehci = to_s5p_ehci(hcd);
+ exynos_ehci = to_exynos_ehci(hcd);
if (of_device_is_compatible(pdev->dev.of_node,
- "samsung,exynos5440-ehci")) {
- s5p_ehci->pdata = &empty_platdata;
+ "samsung,exynos5440-ehci"))
goto skip_phy;
- }
phy = devm_usb_get_phy(&pdev->dev, USB_PHY_TYPE_USB2);
if (IS_ERR(phy)) {
- /* Fallback to pdata */
- if (!pdata) {
- usb_put_hcd(hcd);
- dev_warn(&pdev->dev, "no platform data or transceiver defined\n");
- return -EPROBE_DEFER;
- } else {
- s5p_ehci->pdata = pdata;
- }
+ usb_put_hcd(hcd);
+ dev_warn(&pdev->dev, "no platform data or transceiver defined\n");
+ return -EPROBE_DEFER;
} else {
- s5p_ehci->phy = phy;
- s5p_ehci->otg = phy->otg;
+ exynos_ehci->phy = phy;
+ exynos_ehci->otg = phy->otg;
}
skip_phy:
- s5p_ehci->clk = devm_clk_get(&pdev->dev, "usbhost");
+ exynos_ehci->clk = devm_clk_get(&pdev->dev, "usbhost");
- if (IS_ERR(s5p_ehci->clk)) {
+ if (IS_ERR(exynos_ehci->clk)) {
dev_err(&pdev->dev, "Failed to get usbhost clock\n");
- err = PTR_ERR(s5p_ehci->clk);
+ err = PTR_ERR(exynos_ehci->clk);
goto fail_clk;
}
- err = clk_prepare_enable(s5p_ehci->clk);
+ err = clk_prepare_enable(exynos_ehci->clk);
if (err)
goto fail_clk;
goto fail_io;
}
- if (s5p_ehci->otg)
- s5p_ehci->otg->set_host(s5p_ehci->otg, &hcd->self);
+ if (exynos_ehci->otg)
+ exynos_ehci->otg->set_host(exynos_ehci->otg, &hcd->self);
- if (s5p_ehci->phy)
- usb_phy_init(s5p_ehci->phy);
- else if (s5p_ehci->pdata->phy_init)
- s5p_ehci->pdata->phy_init(pdev, USB_PHY_TYPE_HOST);
+ if (exynos_ehci->phy)
+ usb_phy_init(exynos_ehci->phy);
ehci = hcd_to_ehci(hcd);
ehci->caps = hcd->regs;
return 0;
fail_add_hcd:
- if (s5p_ehci->phy)
- usb_phy_shutdown(s5p_ehci->phy);
- else if (s5p_ehci->pdata->phy_exit)
- s5p_ehci->pdata->phy_exit(pdev, USB_PHY_TYPE_HOST);
+ if (exynos_ehci->phy)
+ usb_phy_shutdown(exynos_ehci->phy);
fail_io:
- clk_disable_unprepare(s5p_ehci->clk);
+ clk_disable_unprepare(exynos_ehci->clk);
fail_clk:
usb_put_hcd(hcd);
return err;
}
-static int s5p_ehci_remove(struct platform_device *pdev)
+static int exynos_ehci_remove(struct platform_device *pdev)
{
struct usb_hcd *hcd = platform_get_drvdata(pdev);
- struct s5p_ehci_hcd *s5p_ehci = to_s5p_ehci(hcd);
+ struct exynos_ehci_hcd *exynos_ehci = to_exynos_ehci(hcd);
usb_remove_hcd(hcd);
- if (s5p_ehci->otg)
- s5p_ehci->otg->set_host(s5p_ehci->otg, &hcd->self);
+ if (exynos_ehci->otg)
+ exynos_ehci->otg->set_host(exynos_ehci->otg, &hcd->self);
- if (s5p_ehci->phy)
- usb_phy_shutdown(s5p_ehci->phy);
- else if (s5p_ehci->pdata->phy_exit)
- s5p_ehci->pdata->phy_exit(pdev, USB_PHY_TYPE_HOST);
+ if (exynos_ehci->phy)
+ usb_phy_shutdown(exynos_ehci->phy);
- clk_disable_unprepare(s5p_ehci->clk);
+ clk_disable_unprepare(exynos_ehci->clk);
usb_put_hcd(hcd);
}
#ifdef CONFIG_PM
-static int s5p_ehci_suspend(struct device *dev)
+static int exynos_ehci_suspend(struct device *dev)
{
struct usb_hcd *hcd = dev_get_drvdata(dev);
- struct s5p_ehci_hcd *s5p_ehci = to_s5p_ehci(hcd);
- struct platform_device *pdev = to_platform_device(dev);
+ struct exynos_ehci_hcd *exynos_ehci = to_exynos_ehci(hcd);
bool do_wakeup = device_may_wakeup(dev);
int rc;
rc = ehci_suspend(hcd, do_wakeup);
- if (s5p_ehci->otg)
- s5p_ehci->otg->set_host(s5p_ehci->otg, &hcd->self);
+ if (exynos_ehci->otg)
+ exynos_ehci->otg->set_host(exynos_ehci->otg, &hcd->self);
- if (s5p_ehci->phy)
- usb_phy_shutdown(s5p_ehci->phy);
- else if (s5p_ehci->pdata->phy_exit)
- s5p_ehci->pdata->phy_exit(pdev, USB_PHY_TYPE_HOST);
+ if (exynos_ehci->phy)
+ usb_phy_shutdown(exynos_ehci->phy);
- clk_disable_unprepare(s5p_ehci->clk);
+ clk_disable_unprepare(exynos_ehci->clk);
return rc;
}
-static int s5p_ehci_resume(struct device *dev)
+static int exynos_ehci_resume(struct device *dev)
{
struct usb_hcd *hcd = dev_get_drvdata(dev);
- struct s5p_ehci_hcd *s5p_ehci = to_s5p_ehci(hcd);
- struct platform_device *pdev = to_platform_device(dev);
+ struct exynos_ehci_hcd *exynos_ehci = to_exynos_ehci(hcd);
- clk_prepare_enable(s5p_ehci->clk);
+ clk_prepare_enable(exynos_ehci->clk);
- if (s5p_ehci->otg)
- s5p_ehci->otg->set_host(s5p_ehci->otg, &hcd->self);
+ if (exynos_ehci->otg)
+ exynos_ehci->otg->set_host(exynos_ehci->otg, &hcd->self);
- if (s5p_ehci->phy)
- usb_phy_init(s5p_ehci->phy);
- else if (s5p_ehci->pdata->phy_init)
- s5p_ehci->pdata->phy_init(pdev, USB_PHY_TYPE_HOST);
+ if (exynos_ehci->phy)
+ usb_phy_init(exynos_ehci->phy);
/* DMA burst Enable */
writel(EHCI_INSNREG00_ENABLE_DMA_BURST, EHCI_INSNREG00(hcd->regs));
return 0;
}
#else
-#define s5p_ehci_suspend NULL
-#define s5p_ehci_resume NULL
+#define exynos_ehci_suspend NULL
+#define exynos_ehci_resume NULL
#endif
-static const struct dev_pm_ops s5p_ehci_pm_ops = {
- .suspend = s5p_ehci_suspend,
- .resume = s5p_ehci_resume,
+static const struct dev_pm_ops exynos_ehci_pm_ops = {
+ .suspend = exynos_ehci_suspend,
+ .resume = exynos_ehci_resume,
};
#ifdef CONFIG_OF
MODULE_DEVICE_TABLE(of, exynos_ehci_match);
#endif
-static struct platform_driver s5p_ehci_driver = {
- .probe = s5p_ehci_probe,
- .remove = s5p_ehci_remove,
+static struct platform_driver exynos_ehci_driver = {
+ .probe = exynos_ehci_probe,
+ .remove = exynos_ehci_remove,
.shutdown = usb_hcd_platform_shutdown,
.driver = {
- .name = "s5p-ehci",
+ .name = "exynos-ehci",
.owner = THIS_MODULE,
- .pm = &s5p_ehci_pm_ops,
+ .pm = &exynos_ehci_pm_ops,
.of_match_table = of_match_ptr(exynos_ehci_match),
}
};
-static const struct ehci_driver_overrides s5p_overrides __initdata = {
- .extra_priv_size = sizeof(struct s5p_ehci_hcd),
+static const struct ehci_driver_overrides exynos_overrides __initdata = {
+ .extra_priv_size = sizeof(struct exynos_ehci_hcd),
};
-static int __init ehci_s5p_init(void)
+static int __init ehci_exynos_init(void)
{
if (usb_disabled())
return -ENODEV;
pr_info("%s: " DRIVER_DESC "\n", hcd_name);
- ehci_init_driver(&s5p_ehci_hc_driver, &s5p_overrides);
- return platform_driver_register(&s5p_ehci_driver);
+ ehci_init_driver(&exynos_ehci_hc_driver, &exynos_overrides);
+ return platform_driver_register(&exynos_ehci_driver);
}
-module_init(ehci_s5p_init);
+module_init(ehci_exynos_init);
-static void __exit ehci_s5p_cleanup(void)
+static void __exit ehci_exynos_cleanup(void)
{
- platform_driver_unregister(&s5p_ehci_driver);
+ platform_driver_unregister(&exynos_ehci_driver);
}
-module_exit(ehci_s5p_cleanup);
+module_exit(ehci_exynos_cleanup);
MODULE_DESCRIPTION(DRIVER_DESC);
-MODULE_ALIAS("platform:s5p-ehci");
+MODULE_ALIAS("platform:exynos-ehci");
MODULE_AUTHOR("Jingoo Han");
MODULE_AUTHOR("Joonyoung Shim");
MODULE_LICENSE("GPL v2");
projects / karo-tx-linux.git / blobdiff