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path: root/drivers/usb/host/ehci-s5p.c
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Diffstat (limited to 'drivers/usb/host/ehci-s5p.c')
-rw-r--r--drivers/usb/host/ehci-s5p.c298
1 files changed, 0 insertions, 298 deletions
diff --git a/drivers/usb/host/ehci-s5p.c b/drivers/usb/host/ehci-s5p.c
deleted file mode 100644
index 293f7412992..00000000000
--- a/drivers/usb/host/ehci-s5p.c
+++ /dev/null
@@ -1,298 +0,0 @@
-/*
- * SAMSUNG S5P USB HOST EHCI Controller
- *
- * Copyright (C) 2011 Samsung Electronics Co.Ltd
- * Author: Jingoo Han <jg1.han@samsung.com>
- * Author: Joonyoung Shim <jy0922.shim@samsung.com>
- *
- * 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/clk.h>
-#include <linux/platform_device.h>
-#include <plat/ehci.h>
-#include <plat/usb-phy.h>
-
-struct s5p_ehci_hcd {
- struct device *dev;
- struct usb_hcd *hcd;
- struct clk *clk;
-};
-
-static const struct hc_driver s5p_ehci_hc_driver = {
- .description = hcd_name,
- .product_desc = "S5P EHCI Host Controller",
- .hcd_priv_size = sizeof(struct ehci_hcd),
-
- .irq = ehci_irq,
- .flags = HCD_MEMORY | HCD_USB2,
-
- .reset = ehci_init,
- .start = ehci_run,
- .stop = ehci_stop,
- .shutdown = ehci_shutdown,
-
- .get_frame_number = ehci_get_frame,
-
- .urb_enqueue = ehci_urb_enqueue,
- .urb_dequeue = ehci_urb_dequeue,
- .endpoint_disable = ehci_endpoint_disable,
- .endpoint_reset = ehci_endpoint_reset,
-
- .hub_status_data = ehci_hub_status_data,
- .hub_control = ehci_hub_control,
- .bus_suspend = ehci_bus_suspend,
- .bus_resume = ehci_bus_resume,
-
- .relinquish_port = ehci_relinquish_port,
- .port_handed_over = ehci_port_handed_over,
-
- .clear_tt_buffer_complete = ehci_clear_tt_buffer_complete,
-};
-
-static int __devinit s5p_ehci_probe(struct platform_device *pdev)
-{
- struct s5p_ehci_platdata *pdata;
- struct s5p_ehci_hcd *s5p_ehci;
- struct usb_hcd *hcd;
- struct ehci_hcd *ehci;
- struct resource *res;
- int irq;
- int err;
-
- pdata = pdev->dev.platform_data;
- if (!pdata) {
- dev_err(&pdev->dev, "No platform data defined\n");
- return -EINVAL;
- }
-
- s5p_ehci = kzalloc(sizeof(struct s5p_ehci_hcd), GFP_KERNEL);
- if (!s5p_ehci)
- return -ENOMEM;
-
- s5p_ehci->dev = &pdev->dev;
-
- hcd = usb_create_hcd(&s5p_ehci_hc_driver, &pdev->dev,
- dev_name(&pdev->dev));
- if (!hcd) {
- dev_err(&pdev->dev, "Unable to create HCD\n");
- err = -ENOMEM;
- goto fail_hcd;
- }
-
- s5p_ehci->hcd = hcd;
- s5p_ehci->clk = clk_get(&pdev->dev, "usbhost");
-
- if (IS_ERR(s5p_ehci->clk)) {
- dev_err(&pdev->dev, "Failed to get usbhost clock\n");
- err = PTR_ERR(s5p_ehci->clk);
- goto fail_clk;
- }
-
- err = clk_enable(s5p_ehci->clk);
- if (err)
- goto fail_clken;
-
- res = platform_get_resource(pdev, IORESOURCE_MEM, 0);
- if (!res) {
- dev_err(&pdev->dev, "Failed to get I/O memory\n");
- err = -ENXIO;
- goto fail_io;
- }
-
- hcd->rsrc_start = res->start;
- hcd->rsrc_len = resource_size(res);
- hcd->regs = ioremap(res->start, resource_size(res));
- if (!hcd->regs) {
- dev_err(&pdev->dev, "Failed to remap I/O memory\n");
- err = -ENOMEM;
- goto fail_io;
- }
-
- irq = platform_get_irq(pdev, 0);
- if (!irq) {
- dev_err(&pdev->dev, "Failed to get IRQ\n");
- err = -ENODEV;
- goto fail;
- }
-
- if (pdata->phy_init)
- pdata->phy_init(pdev, S5P_USB_PHY_HOST);
-
- ehci = hcd_to_ehci(hcd);
- ehci->caps = hcd->regs;
- ehci->regs = hcd->regs +
- HC_LENGTH(ehci, readl(&ehci->caps->hc_capbase));
-
- dbg_hcs_params(ehci, "reset");
- dbg_hcc_params(ehci, "reset");
-
- /* cache this readonly data; minimize chip reads */
- ehci->hcs_params = readl(&ehci->caps->hcs_params);
-
- ehci_reset(ehci);
-
- err = usb_add_hcd(hcd, irq, IRQF_SHARED);
- if (err) {
- dev_err(&pdev->dev, "Failed to add USB HCD\n");
- goto fail;
- }
-
- platform_set_drvdata(pdev, s5p_ehci);
-
- return 0;
-
-fail:
- iounmap(hcd->regs);
-fail_io:
- clk_disable(s5p_ehci->clk);
-fail_clken:
- clk_put(s5p_ehci->clk);
-fail_clk:
- usb_put_hcd(hcd);
-fail_hcd:
- kfree(s5p_ehci);
- return err;
-}
-
-static int __devexit s5p_ehci_remove(struct platform_device *pdev)
-{
- struct s5p_ehci_platdata *pdata = pdev->dev.platform_data;
- struct s5p_ehci_hcd *s5p_ehci = platform_get_drvdata(pdev);
- struct usb_hcd *hcd = s5p_ehci->hcd;
-
- usb_remove_hcd(hcd);
-
- if (pdata && pdata->phy_exit)
- pdata->phy_exit(pdev, S5P_USB_PHY_HOST);
-
- iounmap(hcd->regs);
-
- clk_disable(s5p_ehci->clk);
- clk_put(s5p_ehci->clk);
-
- usb_put_hcd(hcd);
- kfree(s5p_ehci);
-
- return 0;
-}
-
-static void s5p_ehci_shutdown(struct platform_device *pdev)
-{
- struct s5p_ehci_hcd *s5p_ehci = platform_get_drvdata(pdev);
- struct usb_hcd *hcd = s5p_ehci->hcd;
-
- if (hcd->driver->shutdown)
- hcd->driver->shutdown(hcd);
-}
-
-#ifdef CONFIG_PM
-static int s5p_ehci_suspend(struct device *dev)
-{
- struct s5p_ehci_hcd *s5p_ehci = dev_get_drvdata(dev);
- struct usb_hcd *hcd = s5p_ehci->hcd;
- struct ehci_hcd *ehci = hcd_to_ehci(hcd);
- struct platform_device *pdev = to_platform_device(dev);
- struct s5p_ehci_platdata *pdata = pdev->dev.platform_data;
- unsigned long flags;
- int rc = 0;
-
- if (time_before(jiffies, ehci->next_statechange))
- msleep(20);
-
- /*
- * Root hub was already suspended. Disable irq emission and
- * mark HW unaccessible. The PM and USB cores make sure that
- * the root hub is either suspended or stopped.
- */
- ehci_prepare_ports_for_controller_suspend(ehci, device_may_wakeup(dev));
- spin_lock_irqsave(&ehci->lock, flags);
- ehci_writel(ehci, 0, &ehci->regs->intr_enable);
- (void)ehci_readl(ehci, &ehci->regs->intr_enable);
-
- clear_bit(HCD_FLAG_HW_ACCESSIBLE, &hcd->flags);
- spin_unlock_irqrestore(&ehci->lock, flags);
-
- if (pdata && pdata->phy_exit)
- pdata->phy_exit(pdev, S5P_USB_PHY_HOST);
-
- return rc;
-}
-
-static int s5p_ehci_resume(struct device *dev)
-{
- struct s5p_ehci_hcd *s5p_ehci = dev_get_drvdata(dev);
- struct usb_hcd *hcd = s5p_ehci->hcd;
- struct ehci_hcd *ehci = hcd_to_ehci(hcd);
- struct platform_device *pdev = to_platform_device(dev);
- struct s5p_ehci_platdata *pdata = pdev->dev.platform_data;
-
- if (pdata && pdata->phy_init)
- pdata->phy_init(pdev, S5P_USB_PHY_HOST);
-
- if (time_before(jiffies, ehci->next_statechange))
- msleep(100);
-
- /* Mark hardware accessible again as we are out of D3 state by now */
- set_bit(HCD_FLAG_HW_ACCESSIBLE, &hcd->flags);
-
- if (ehci_readl(ehci, &ehci->regs->configured_flag) == FLAG_CF) {
- int mask = INTR_MASK;
-
- ehci_prepare_ports_for_controller_resume(ehci);
- if (!hcd->self.root_hub->do_remote_wakeup)
- mask &= ~STS_PCD;
- ehci_writel(ehci, mask, &ehci->regs->intr_enable);
- ehci_readl(ehci, &ehci->regs->intr_enable);
- return 0;
- }
-
- usb_root_hub_lost_power(hcd->self.root_hub);
-
- (void) ehci_halt(ehci);
- (void) ehci_reset(ehci);
-
- /* emptying the schedule aborts any urbs */
- spin_lock_irq(&ehci->lock);
- if (ehci->reclaim)
- end_unlink_async(ehci);
- ehci_work(ehci);
- spin_unlock_irq(&ehci->lock);
-
- ehci_writel(ehci, ehci->command, &ehci->regs->command);
- ehci_writel(ehci, FLAG_CF, &ehci->regs->configured_flag);
- ehci_readl(ehci, &ehci->regs->command); /* unblock posted writes */
-
- /* here we "know" root ports should always stay powered */
- ehci_port_power(ehci, 1);
-
- ehci->rh_state = EHCI_RH_SUSPENDED;
-
- return 0;
-}
-#else
-#define s5p_ehci_suspend NULL
-#define s5p_ehci_resume NULL
-#endif
-
-static const struct dev_pm_ops s5p_ehci_pm_ops = {
- .suspend = s5p_ehci_suspend,
- .resume = s5p_ehci_resume,
-};
-
-static struct platform_driver s5p_ehci_driver = {
- .probe = s5p_ehci_probe,
- .remove = __devexit_p(s5p_ehci_remove),
- .shutdown = s5p_ehci_shutdown,
- .driver = {
- .name = "s5p-ehci",
- .owner = THIS_MODULE,
- .pm = &s5p_ehci_pm_ops,
- }
-};
-
-MODULE_ALIAS("platform:s5p-ehci");
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