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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.c325
1 files changed, 0 insertions, 325 deletions
diff --git a/drivers/usb/host/ehci-s5p.c b/drivers/usb/host/ehci-s5p.c
deleted file mode 100644
index 7c3de95c7054..000000000000
--- a/drivers/usb/host/ehci-s5p.c
+++ /dev/null
@@ -1,325 +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/dma-mapping.h>
-#include <linux/io.h>
-#include <linux/kernel.h>
-#include <linux/module.h>
-#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 <linux/usb/hcd.h>
-#include <linux/usb/otg.h>
-
-#include "ehci.h"
-
-#define DRIVER_DESC "EHCI s5p driver"
-
-#define EHCI_INSNREG00(base) (base + 0x90)
-#define EHCI_INSNREG00_ENA_INCR16 (0x1 << 25)
-#define EHCI_INSNREG00_ENA_INCR8 (0x1 << 24)
-#define EHCI_INSNREG00_ENA_INCR4 (0x1 << 23)
-#define EHCI_INSNREG00_ENA_INCRX_ALIGN (0x1 << 22)
-#define EHCI_INSNREG00_ENABLE_DMA_BURST \
- (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;
-
-struct s5p_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_s5p_ehci(hcd) (struct s5p_ehci_hcd *)(hcd_to_ehci(hcd)->priv)
-
-static void s5p_setup_vbus_gpio(struct platform_device *pdev)
-{
- struct device *dev = &pdev->dev;
- int err;
- int gpio;
-
- if (!dev->of_node)
- return;
-
- gpio = of_get_named_gpio(dev->of_node, "samsung,vbus-gpio", 0);
- if (!gpio_is_valid(gpio))
- return;
-
- err = devm_gpio_request_one(dev, gpio, GPIOF_OUT_INIT_HIGH,
- "ehci_vbus_gpio");
- if (err)
- dev_err(dev, "can't request ehci vbus gpio %d", gpio);
-}
-
-static int s5p_ehci_probe(struct platform_device *pdev)
-{
- struct s5p_ehci_platdata *pdata = dev_get_platdata(&pdev->dev);
- struct s5p_ehci_hcd *s5p_ehci;
- struct usb_hcd *hcd;
- struct ehci_hcd *ehci;
- struct resource *res;
- struct usb_phy *phy;
- int irq;
- int err;
-
- /*
- * Right now device-tree probed devices don't get dma_mask set.
- * Since shared usb code relies on it, set it here for now.
- * Once we move to full device tree support this will vanish off.
- */
- if (!pdev->dev.dma_mask)
- pdev->dev.dma_mask = &pdev->dev.coherent_dma_mask;
- if (!pdev->dev.coherent_dma_mask)
- pdev->dev.coherent_dma_mask = DMA_BIT_MASK(32);
-
- s5p_setup_vbus_gpio(pdev);
-
- 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");
- return -ENOMEM;
- }
- s5p_ehci = to_s5p_ehci(hcd);
-
- if (of_device_is_compatible(pdev->dev.of_node,
- "samsung,exynos5440-ehci")) {
- s5p_ehci->pdata = &empty_platdata;
- 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;
- }
- } else {
- s5p_ehci->phy = phy;
- s5p_ehci->otg = phy->otg;
- }
-
-skip_phy:
-
- s5p_ehci->clk = devm_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_prepare_enable(s5p_ehci->clk);
- if (err)
- goto fail_clk;
-
- 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 = devm_ioremap(&pdev->dev, res->start, hcd->rsrc_len);
- 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_io;
- }
-
- if (s5p_ehci->otg)
- s5p_ehci->otg->set_host(s5p_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);
-
- ehci = hcd_to_ehci(hcd);
- ehci->caps = hcd->regs;
-
- /* DMA burst Enable */
- writel(EHCI_INSNREG00_ENABLE_DMA_BURST, EHCI_INSNREG00(hcd->regs));
-
- 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, hcd);
-
- 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);
-fail_io:
- clk_disable_unprepare(s5p_ehci->clk);
-fail_clk:
- usb_put_hcd(hcd);
- return err;
-}
-
-static int s5p_ehci_remove(struct platform_device *pdev)
-{
- struct usb_hcd *hcd = platform_get_drvdata(pdev);
- struct s5p_ehci_hcd *s5p_ehci = to_s5p_ehci(hcd);
-
- usb_remove_hcd(hcd);
-
- if (s5p_ehci->otg)
- s5p_ehci->otg->set_host(s5p_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);
-
- clk_disable_unprepare(s5p_ehci->clk);
-
- usb_put_hcd(hcd);
-
- return 0;
-}
-
-#ifdef CONFIG_PM
-static int s5p_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);
-
- 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 (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);
-
- clk_disable_unprepare(s5p_ehci->clk);
-
- return rc;
-}
-
-static int s5p_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);
-
- clk_prepare_enable(s5p_ehci->clk);
-
- if (s5p_ehci->otg)
- s5p_ehci->otg->set_host(s5p_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);
-
- /* DMA burst Enable */
- writel(EHCI_INSNREG00_ENABLE_DMA_BURST, EHCI_INSNREG00(hcd->regs));
-
- ehci_resume(hcd, false);
- 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,
-};
-
-#ifdef CONFIG_OF
-static const struct of_device_id exynos_ehci_match[] = {
- { .compatible = "samsung,exynos4210-ehci" },
- { .compatible = "samsung,exynos5440-ehci" },
- {},
-};
-MODULE_DEVICE_TABLE(of, exynos_ehci_match);
-#endif
-
-static struct platform_driver s5p_ehci_driver = {
- .probe = s5p_ehci_probe,
- .remove = s5p_ehci_remove,
- .shutdown = usb_hcd_platform_shutdown,
- .driver = {
- .name = "s5p-ehci",
- .owner = THIS_MODULE,
- .pm = &s5p_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 int __init ehci_s5p_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);
-}
-module_init(ehci_s5p_init);
-
-static void __exit ehci_s5p_cleanup(void)
-{
- platform_driver_unregister(&s5p_ehci_driver);
-}
-module_exit(ehci_s5p_cleanup);
-
-MODULE_DESCRIPTION(DRIVER_DESC);
-MODULE_ALIAS("platform:s5p-ehci");
-MODULE_AUTHOR("Jingoo Han");
-MODULE_AUTHOR("Joonyoung Shim");
-MODULE_LICENSE("GPL v2");
generated by cgit v1.2.3 (git 2.0.4) at 2024-06-11 18:56:42 +0000