*/
#include <linux/clk.h>
+#include <linux/dma-mapping.h>
+#include <linux/io.h>
+#include <linux/kernel.h>
+#include <linux/module.h>
#include <linux/of.h>
#include <linux/platform_device.h>
-#include <linux/platform_data/usb-ohci-exynos.h>
#include <linux/usb/phy.h>
#include <linux/usb/samsung_usb_phy.h>
+#include <linux/usb.h>
+#include <linux/usb/hcd.h>
+#include <linux/usb/otg.h>
+
+#include "ohci.h"
+
+#define DRIVER_DESC "OHCI EXYNOS driver"
+
+static const char hcd_name[] = "ohci-exynos";
+static struct hc_driver __read_mostly exynos_ohci_hc_driver;
+
+#define to_exynos_ohci(hcd) (struct exynos_ohci_hcd *)(hcd_to_ohci(hcd)->priv)
struct exynos_ohci_hcd {
- struct device *dev;
- struct usb_hcd *hcd;
struct clk *clk;
struct usb_phy *phy;
struct usb_otg *otg;
- struct exynos4_ohci_platdata *pdata;
};
-static void exynos_ohci_phy_enable(struct exynos_ohci_hcd *exynos_ohci)
+static void exynos_ohci_phy_enable(struct platform_device *pdev)
{
- struct platform_device *pdev = to_platform_device(exynos_ohci->dev);
+ struct usb_hcd *hcd = platform_get_drvdata(pdev);
+ struct exynos_ohci_hcd *exynos_ohci = to_exynos_ohci(hcd);
if (exynos_ohci->phy)
usb_phy_init(exynos_ohci->phy);
- else if (exynos_ohci->pdata && exynos_ohci->pdata->phy_init)
- exynos_ohci->pdata->phy_init(pdev, USB_PHY_TYPE_HOST);
}
-static void exynos_ohci_phy_disable(struct exynos_ohci_hcd *exynos_ohci)
+static void exynos_ohci_phy_disable(struct platform_device *pdev)
{
- struct platform_device *pdev = to_platform_device(exynos_ohci->dev);
+ struct usb_hcd *hcd = platform_get_drvdata(pdev);
+ struct exynos_ohci_hcd *exynos_ohci = to_exynos_ohci(hcd);
if (exynos_ohci->phy)
usb_phy_shutdown(exynos_ohci->phy);
- else if (exynos_ohci->pdata && exynos_ohci->pdata->phy_exit)
- exynos_ohci->pdata->phy_exit(pdev, USB_PHY_TYPE_HOST);
-}
-
-static int ohci_exynos_reset(struct usb_hcd *hcd)
-{
- return ohci_init(hcd_to_ohci(hcd));
}
-static int ohci_exynos_start(struct usb_hcd *hcd)
-{
- struct ohci_hcd *ohci = hcd_to_ohci(hcd);
- int ret;
-
- ohci_dbg(ohci, "ohci_exynos_start, ohci:%p", ohci);
-
- ret = ohci_run(ohci);
- if (ret < 0) {
- dev_err(hcd->self.controller, "can't start %s\n",
- hcd->self.bus_name);
- ohci_stop(hcd);
- return ret;
- }
-
- return 0;
-}
-
-static const struct hc_driver exynos_ohci_hc_driver = {
- .description = hcd_name,
- .product_desc = "EXYNOS OHCI Host Controller",
- .hcd_priv_size = sizeof(struct ohci_hcd),
-
- .irq = ohci_irq,
- .flags = HCD_MEMORY|HCD_USB11,
-
- .reset = ohci_exynos_reset,
- .start = ohci_exynos_start,
- .stop = ohci_stop,
- .shutdown = ohci_shutdown,
-
- .get_frame_number = ohci_get_frame,
-
- .urb_enqueue = ohci_urb_enqueue,
- .urb_dequeue = ohci_urb_dequeue,
- .endpoint_disable = ohci_endpoint_disable,
-
- .hub_status_data = ohci_hub_status_data,
- .hub_control = ohci_hub_control,
-#ifdef CONFIG_PM
- .bus_suspend = ohci_bus_suspend,
- .bus_resume = ohci_bus_resume,
-#endif
- .start_port_reset = ohci_start_port_reset,
-};
-
static int exynos_ohci_probe(struct platform_device *pdev)
{
- struct exynos4_ohci_platdata *pdata = dev_get_platdata(&pdev->dev);
struct exynos_ohci_hcd *exynos_ohci;
struct usb_hcd *hcd;
- struct ohci_hcd *ohci;
struct resource *res;
struct usb_phy *phy;
int irq;
if (err)
return err;
- exynos_ohci = devm_kzalloc(&pdev->dev, sizeof(struct exynos_ohci_hcd),
- GFP_KERNEL);
- if (!exynos_ohci)
+ hcd = usb_create_hcd(&exynos_ohci_hc_driver,
+ &pdev->dev, dev_name(&pdev->dev));
+ if (!hcd) {
+ dev_err(&pdev->dev, "Unable to create HCD\n");
return -ENOMEM;
+ }
+
+ exynos_ohci = to_exynos_ohci(hcd);
if (of_device_is_compatible(pdev->dev.of_node,
"samsung,exynos5440-ohci"))
phy = devm_usb_get_phy(&pdev->dev, USB_PHY_TYPE_USB2);
if (IS_ERR(phy)) {
- /* Fallback to pdata */
- if (!pdata) {
- dev_warn(&pdev->dev, "no platform data or transceiver defined\n");
- return -EPROBE_DEFER;
- } else {
- exynos_ohci->pdata = pdata;
- }
+ usb_put_hcd(hcd);
+ dev_warn(&pdev->dev, "no platform data or transceiver defined\n");
+ return -EPROBE_DEFER;
} else {
exynos_ohci->phy = phy;
exynos_ohci->otg = phy->otg;
}
skip_phy:
-
- exynos_ohci->dev = &pdev->dev;
-
- hcd = usb_create_hcd(&exynos_ohci_hc_driver, &pdev->dev,
- dev_name(&pdev->dev));
- if (!hcd) {
- dev_err(&pdev->dev, "Unable to create HCD\n");
- return -ENOMEM;
- }
-
- exynos_ohci->hcd = hcd;
exynos_ohci->clk = devm_clk_get(&pdev->dev, "usbhost");
if (IS_ERR(exynos_ohci->clk)) {
}
if (exynos_ohci->otg)
- exynos_ohci->otg->set_host(exynos_ohci->otg,
- &exynos_ohci->hcd->self);
+ exynos_ohci->otg->set_host(exynos_ohci->otg, &hcd->self);
- exynos_ohci_phy_enable(exynos_ohci);
+ platform_set_drvdata(pdev, hcd);
- ohci = hcd_to_ohci(hcd);
- ohci_hcd_init(ohci);
+ exynos_ohci_phy_enable(pdev);
err = usb_add_hcd(hcd, irq, IRQF_SHARED);
if (err) {
dev_err(&pdev->dev, "Failed to add USB HCD\n");
goto fail_add_hcd;
}
-
- platform_set_drvdata(pdev, exynos_ohci);
-
return 0;
fail_add_hcd:
- exynos_ohci_phy_disable(exynos_ohci);
+ exynos_ohci_phy_disable(pdev);
fail_io:
clk_disable_unprepare(exynos_ohci->clk);
fail_clk:
static int exynos_ohci_remove(struct platform_device *pdev)
{
- struct exynos_ohci_hcd *exynos_ohci = platform_get_drvdata(pdev);
- struct usb_hcd *hcd = exynos_ohci->hcd;
+ struct usb_hcd *hcd = platform_get_drvdata(pdev);
+ struct exynos_ohci_hcd *exynos_ohci = to_exynos_ohci(hcd);
usb_remove_hcd(hcd);
if (exynos_ohci->otg)
- exynos_ohci->otg->set_host(exynos_ohci->otg,
- &exynos_ohci->hcd->self);
+ exynos_ohci->otg->set_host(exynos_ohci->otg, &hcd->self);
- exynos_ohci_phy_disable(exynos_ohci);
+ exynos_ohci_phy_disable(pdev);
clk_disable_unprepare(exynos_ohci->clk);
static void exynos_ohci_shutdown(struct platform_device *pdev)
{
- struct exynos_ohci_hcd *exynos_ohci = platform_get_drvdata(pdev);
- struct usb_hcd *hcd = exynos_ohci->hcd;
+ struct usb_hcd *hcd = platform_get_drvdata(pdev);
if (hcd->driver->shutdown)
hcd->driver->shutdown(hcd);
#ifdef CONFIG_PM
static int exynos_ohci_suspend(struct device *dev)
{
- struct exynos_ohci_hcd *exynos_ohci = dev_get_drvdata(dev);
- struct usb_hcd *hcd = exynos_ohci->hcd;
+ struct usb_hcd *hcd = dev_get_drvdata(dev);
+ struct exynos_ohci_hcd *exynos_ohci = to_exynos_ohci(hcd);
struct ohci_hcd *ohci = hcd_to_ohci(hcd);
+ struct platform_device *pdev = to_platform_device(dev);
unsigned long flags;
int rc = 0;
clear_bit(HCD_FLAG_HW_ACCESSIBLE, &hcd->flags);
if (exynos_ohci->otg)
- exynos_ohci->otg->set_host(exynos_ohci->otg,
- &exynos_ohci->hcd->self);
+ exynos_ohci->otg->set_host(exynos_ohci->otg, &hcd->self);
- exynos_ohci_phy_disable(exynos_ohci);
+ exynos_ohci_phy_disable(pdev);
clk_disable_unprepare(exynos_ohci->clk);
static int exynos_ohci_resume(struct device *dev)
{
- struct exynos_ohci_hcd *exynos_ohci = dev_get_drvdata(dev);
- struct usb_hcd *hcd = exynos_ohci->hcd;
+ struct usb_hcd *hcd = dev_get_drvdata(dev);
+ struct exynos_ohci_hcd *exynos_ohci = to_exynos_ohci(hcd);
+ struct platform_device *pdev = to_platform_device(dev);
clk_prepare_enable(exynos_ohci->clk);
if (exynos_ohci->otg)
- exynos_ohci->otg->set_host(exynos_ohci->otg,
- &exynos_ohci->hcd->self);
+ exynos_ohci->otg->set_host(exynos_ohci->otg, &hcd->self);
- exynos_ohci_phy_enable(exynos_ohci);
+ exynos_ohci_phy_enable(pdev);
ohci_resume(hcd, false);
#define exynos_ohci_resume NULL
#endif
+static const struct ohci_driver_overrides exynos_overrides __initconst = {
+ .extra_priv_size = sizeof(struct exynos_ohci_hcd),
+};
+
static const struct dev_pm_ops exynos_ohci_pm_ops = {
.suspend = exynos_ohci_suspend,
.resume = exynos_ohci_resume,
.of_match_table = of_match_ptr(exynos_ohci_match),
}
};
+static int __init ohci_exynos_init(void)
+{
+ if (usb_disabled())
+ return -ENODEV;
+
+ pr_info("%s: " DRIVER_DESC "\n", hcd_name);
+ ohci_init_driver(&exynos_ohci_hc_driver, &exynos_overrides);
+ return platform_driver_register(&exynos_ohci_driver);
+}
+module_init(ohci_exynos_init);
+
+static void __exit ohci_exynos_cleanup(void)
+{
+ platform_driver_unregister(&exynos_ohci_driver);
+}
+module_exit(ohci_exynos_cleanup);
MODULE_ALIAS("platform:exynos-ohci");
MODULE_AUTHOR("Jingoo Han <jg1.han@samsung.com>");
+MODULE_LICENSE("GPL v2");
projects / cascardo / linux.git / blobdiff