return 0;
}
+/* ohci_setup routine for generic controller initialization */
+
+int ohci_setup(struct usb_hcd *hcd)
+{
+ struct ohci_hcd *ohci = hcd_to_ohci(hcd);
+
+ ohci_hcd_init(ohci);
+
+ return ohci_init(ohci);
+}
+EXPORT_SYMBOL_GPL(ohci_setup);
+
+/* ohci_start routine for generic controller start of all OHCI bus glue */
+static int ohci_start(struct usb_hcd *hcd)
+{
+ struct ohci_hcd *ohci = hcd_to_ohci(hcd);
+ int ret;
+
+ ret = ohci_run(ohci);
+ if (ret < 0) {
+ ohci_err(ohci, "can't start\n");
+ ohci_stop(hcd);
+ }
+ return ret;
+}
+
/*-------------------------------------------------------------------------*/
/* an interrupt happens */
#ifdef CONFIG_PM
-static int __maybe_unused ohci_suspend(struct usb_hcd *hcd, bool do_wakeup)
+int __maybe_unused ohci_suspend(struct usb_hcd *hcd, bool do_wakeup)
{
struct ohci_hcd *ohci = hcd_to_ohci (hcd);
unsigned long flags;
}
-static int __maybe_unused ohci_resume(struct usb_hcd *hcd, bool hibernated)
+int __maybe_unused ohci_resume(struct usb_hcd *hcd, bool hibernated)
{
struct ohci_hcd *ohci = hcd_to_ohci(hcd);
int port;
}
#endif
+/*-------------------------------------------------------------------------*/
+
+/*
+ * Generic structure: This gets copied for platform drivers so that
+ * individual entries can be overridden as needed.
+ */
+
+static const struct hc_driver ohci_hc_driver = {
+ .description = hcd_name,
+ .product_desc = "OHCI Host Controller",
+ .hcd_priv_size = sizeof(struct ohci_hcd),
+
+ /*
+ * generic hardware linkage
+ */
+ .irq = ohci_irq,
+ .flags = HCD_MEMORY | HCD_USB11,
+
+ /*
+ * basic lifecycle operations
+ */
+ .reset = ohci_setup,
+ .start = ohci_start,
+ .stop = ohci_stop,
+ .shutdown = ohci_shutdown,
+
+ /*
+ * managing i/o requests and associated device resources
+ */
+ .urb_enqueue = ohci_urb_enqueue,
+ .urb_dequeue = ohci_urb_dequeue,
+ .endpoint_disable = ohci_endpoint_disable,
+
+ /*
+ * scheduling support
+ */
+ .get_frame_number = ohci_get_frame,
+
+ /*
+ * root hub support
+ */
+ .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,
+};
+
+void ohci_init_driver(struct hc_driver *drv,
+ const struct ohci_driver_overrides *over)
+{
+ /* Copy the generic table to drv and then apply the overrides */
+ *drv = ohci_hc_driver;
+
+ if (over) {
+ drv->product_desc = over->product_desc;
+ drv->hcd_priv_size += over->extra_priv_size;
+ if (over->reset)
+ drv->reset = over->reset;
+ }
+}
+EXPORT_SYMBOL_GPL(ohci_init_driver);
/*-------------------------------------------------------------------------*/
#define PLATFORM_DRIVER ohci_hcd_rk_driver
#endif
-#ifdef CONFIG_USB_OHCI_HCD_PLATFORM
-#include "ohci-platform.c"
-#define PLATFORM_DRIVER ohci_platform_driver
-#endif
-
static int __init ohci_hcd_mod_init(void)
{
int retval = 0;
*
* Copyright 2007 Michael Buesch <m@bues.ch>
* Copyright 2011-2012 Hauke Mehrtens <hauke@hauke-m.de>
+ * Copyright 2014 Hans de Goede <hdegoede@redhat.com>
*
* Derived from the OCHI-SSB driver
* Derived from the OHCI-PCI driver
*
* Licensed under the GNU/GPL. See COPYING for details.
*/
+
+#include <linux/clk.h>
+#include <linux/dma-mapping.h>
+#include <linux/hrtimer.h>
+#include <linux/io.h>
+#include <linux/kernel.h>
+#include <linux/module.h>
#include <linux/err.h>
+#include <linux/phy/phy.h>
#include <linux/platform_device.h>
+#include <linux/reset.h>
#include <linux/usb/ohci_pdriver.h>
+#include <linux/usb.h>
+#include <linux/usb/hcd.h>
-static int ohci_platform_reset(struct usb_hcd *hcd)
-{
- struct platform_device *pdev = to_platform_device(hcd->self.controller);
- struct usb_ohci_pdata *pdata = pdev->dev.platform_data;
- struct ohci_hcd *ohci = hcd_to_ohci(hcd);
- int err;
+#include "ohci.h"
- if (pdata->big_endian_desc)
- ohci->flags |= OHCI_QUIRK_BE_DESC;
- if (pdata->big_endian_mmio)
- ohci->flags |= OHCI_QUIRK_BE_MMIO;
- if (pdata->no_big_frame_no)
- ohci->flags |= OHCI_QUIRK_FRAME_NO;
+#define DRIVER_DESC "OHCI generic platform driver"
+#define OHCI_MAX_CLKS 3
+#define hcd_to_ohci_priv(h) ((struct ohci_platform_priv *)hcd_to_ohci(h)->priv)
- ohci_hcd_init(ohci);
+struct ohci_platform_priv {
+ struct clk *clks[OHCI_MAX_CLKS];
+ struct reset_control *rst;
+ struct phy *phy;
+};
- if (pdata->num_ports)
- ohci->num_ports = pdata->num_ports;
+static const char hcd_name[] = "ohci-platform";
- err = ohci_init(ohci);
+static int ohci_platform_power_on(struct platform_device *dev)
+{
+ struct usb_hcd *hcd = platform_get_drvdata(dev);
+ struct ohci_platform_priv *priv = hcd_to_ohci_priv(hcd);
+ int clk, ret;
- return err;
-}
+ for (clk = 0; clk < OHCI_MAX_CLKS && priv->clks[clk]; clk++) {
+ ret = clk_prepare_enable(priv->clks[clk]);
+ if (ret)
+ goto err_disable_clks;
+ }
-static int ohci_platform_start(struct usb_hcd *hcd)
-{
- struct ohci_hcd *ohci = hcd_to_ohci(hcd);
- int err;
+ if (priv->phy) {
+ ret = phy_init(priv->phy);
+ if (ret)
+ goto err_disable_clks;
- err = ohci_run(ohci);
- if (err < 0) {
- ohci_err(ohci, "can't start\n");
- ohci_stop(hcd);
+ ret = phy_power_on(priv->phy);
+ if (ret)
+ goto err_exit_phy;
}
- return err;
-}
+ return 0;
+
+err_exit_phy:
+ phy_exit(priv->phy);
+err_disable_clks:
+ while (--clk >= 0)
+ clk_disable_unprepare(priv->clks[clk]);
-static const struct hc_driver ohci_platform_hc_driver = {
- .description = hcd_name,
- .product_desc = "Generic Platform OHCI Controller",
- .hcd_priv_size = sizeof(struct ohci_hcd),
+ return ret;
+}
- .irq = ohci_irq,
- .flags = HCD_MEMORY | HCD_USB11,
+static void ohci_platform_power_off(struct platform_device *dev)
+{
+ struct usb_hcd *hcd = platform_get_drvdata(dev);
+ struct ohci_platform_priv *priv = hcd_to_ohci_priv(hcd);
+ int clk;
- .reset = ohci_platform_reset,
- .start = ohci_platform_start,
- .stop = ohci_stop,
- .shutdown = ohci_shutdown,
+ if (priv->phy) {
+ phy_power_off(priv->phy);
+ phy_exit(priv->phy);
+ }
- .urb_enqueue = ohci_urb_enqueue,
- .urb_dequeue = ohci_urb_dequeue,
- .endpoint_disable = ohci_endpoint_disable,
+ for (clk = OHCI_MAX_CLKS - 1; clk >= 0; clk--)
+ if (priv->clks[clk])
+ clk_disable_unprepare(priv->clks[clk]);
+}
- .get_frame_number = ohci_get_frame,
+static struct hc_driver __read_mostly ohci_platform_hc_driver;
- .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
+static const struct ohci_driver_overrides platform_overrides __initconst = {
+ .product_desc = "Generic Platform OHCI controller",
+ .extra_priv_size = sizeof(struct ohci_platform_priv),
+};
- .start_port_reset = ohci_start_port_reset,
+static struct usb_ohci_pdata ohci_platform_defaults = {
+ .power_on = ohci_platform_power_on,
+ .power_suspend = ohci_platform_power_off,
+ .power_off = ohci_platform_power_off,
};
static int ohci_platform_probe(struct platform_device *dev)
{
struct usb_hcd *hcd;
struct resource *res_mem;
- struct usb_ohci_pdata *pdata = dev->dev.platform_data;
- int irq;
- int err = -ENOMEM;
-
- if (!pdata) {
- WARN_ON(1);
- return -ENODEV;
- }
+ struct usb_ohci_pdata *pdata = dev_get_platdata(&dev->dev);
+ struct ohci_platform_priv *priv;
+ struct ohci_hcd *ohci;
+ int err, irq, clk = 0;
if (usb_disabled())
return -ENODEV;
+ /*
+ * Use reasonable defaults so platforms don't have to provide these
+ * with DT probing on ARM.
+ */
+ if (!pdata)
+ pdata = &ohci_platform_defaults;
+
+ err = dma_coerce_mask_and_coherent(&dev->dev, DMA_BIT_MASK(32));
+ if (err)
+ return err;
+
irq = platform_get_irq(dev, 0);
if (irq < 0) {
dev_err(&dev->dev, "no irq provided");
return irq;
}
- res_mem = platform_get_resource(dev, IORESOURCE_MEM, 0);
- if (!res_mem) {
- dev_err(&dev->dev, "no memory resource provided");
- return -ENXIO;
+ hcd = usb_create_hcd(&ohci_platform_hc_driver, &dev->dev,
+ dev_name(&dev->dev));
+ if (!hcd)
+ return -ENOMEM;
+
+ platform_set_drvdata(dev, hcd);
+ dev->dev.platform_data = pdata;
+ priv = hcd_to_ohci_priv(hcd);
+ ohci = hcd_to_ohci(hcd);
+
+ if (pdata == &ohci_platform_defaults && dev->dev.of_node) {
+ if (of_property_read_bool(dev->dev.of_node, "big-endian-regs"))
+ ohci->flags |= OHCI_QUIRK_BE_MMIO;
+
+ if (of_property_read_bool(dev->dev.of_node, "big-endian-desc"))
+ ohci->flags |= OHCI_QUIRK_BE_DESC;
+
+ if (of_property_read_bool(dev->dev.of_node, "big-endian"))
+ ohci->flags |= OHCI_QUIRK_BE_MMIO | OHCI_QUIRK_BE_DESC;
+
+ if (of_property_read_bool(dev->dev.of_node, "no-big-frame-no"))
+ ohci->flags |= OHCI_QUIRK_FRAME_NO;
+
+ of_property_read_u32(dev->dev.of_node, "num-ports",
+ &ohci->num_ports);
+
+ priv->phy = devm_phy_get(&dev->dev, "usb");
+ if (IS_ERR(priv->phy)) {
+ err = PTR_ERR(priv->phy);
+ if (err == -EPROBE_DEFER)
+ goto err_put_hcd;
+ priv->phy = NULL;
+ }
+
+ for (clk = 0; clk < OHCI_MAX_CLKS; clk++) {
+ priv->clks[clk] = of_clk_get(dev->dev.of_node, clk);
+ if (IS_ERR(priv->clks[clk])) {
+ err = PTR_ERR(priv->clks[clk]);
+ if (err == -EPROBE_DEFER)
+ goto err_put_clks;
+ priv->clks[clk] = NULL;
+ break;
+ }
+ }
+
+ }
+
+ priv->rst = devm_reset_control_get(&dev->dev, NULL);
+ if (IS_ERR(priv->rst)) {
+ err = PTR_ERR(priv->rst);
+ if (err == -EPROBE_DEFER)
+ goto err_put_clks;
+ priv->rst = NULL;
+ } else {
+ err = reset_control_deassert(priv->rst);
+ if (err)
+ goto err_put_clks;
+ }
+
+ if (pdata->big_endian_desc)
+ ohci->flags |= OHCI_QUIRK_BE_DESC;
+ if (pdata->big_endian_mmio)
+ ohci->flags |= OHCI_QUIRK_BE_MMIO;
+ if (pdata->no_big_frame_no)
+ ohci->flags |= OHCI_QUIRK_FRAME_NO;
+ if (pdata->num_ports)
+ ohci->num_ports = pdata->num_ports;
+
+#ifndef CONFIG_USB_OHCI_BIG_ENDIAN_MMIO
+ if (ohci->flags & OHCI_QUIRK_BE_MMIO) {
+ dev_err(&dev->dev,
+ "Error: CONFIG_USB_OHCI_BIG_ENDIAN_MMIO not set\n");
+ err = -EINVAL;
+ goto err_reset;
}
+#endif
+#ifndef CONFIG_USB_OHCI_BIG_ENDIAN_DESC
+ if (ohci->flags & OHCI_QUIRK_BE_DESC) {
+ dev_err(&dev->dev,
+ "Error: CONFIG_USB_OHCI_BIG_ENDIAN_DESC not set\n");
+ err = -EINVAL;
+ goto err_reset;
+ }
+#endif
if (pdata->power_on) {
err = pdata->power_on(dev);
if (err < 0)
- return err;
+ goto err_reset;
}
- hcd = usb_create_hcd(&ohci_platform_hc_driver, &dev->dev,
- dev_name(&dev->dev));
- if (!hcd) {
- err = -ENOMEM;
+ res_mem = platform_get_resource(dev, IORESOURCE_MEM, 0);
+ hcd->regs = devm_ioremap_resource(&dev->dev, res_mem);
+ if (IS_ERR(hcd->regs)) {
+ err = PTR_ERR(hcd->regs);
goto err_power;
}
-
hcd->rsrc_start = res_mem->start;
hcd->rsrc_len = resource_size(res_mem);
- hcd->regs = devm_ioremap_resource(&dev->dev, res_mem);
- if (IS_ERR(hcd->regs)) {
- err = PTR_ERR(hcd->regs);
- goto err_put_hcd;
- }
err = usb_add_hcd(hcd, irq, IRQF_SHARED);
if (err)
- goto err_put_hcd;
+ goto err_power;
+
+ device_wakeup_enable(hcd->self.controller);
platform_set_drvdata(dev, hcd);
return err;
-err_put_hcd:
- usb_put_hcd(hcd);
err_power:
if (pdata->power_off)
pdata->power_off(dev);
+err_reset:
+ if (priv->rst)
+ reset_control_assert(priv->rst);
+err_put_clks:
+ while (--clk >= 0)
+ clk_put(priv->clks[clk]);
+err_put_hcd:
+ if (pdata == &ohci_platform_defaults)
+ dev->dev.platform_data = NULL;
+
+ usb_put_hcd(hcd);
return err;
}
static int ohci_platform_remove(struct platform_device *dev)
{
struct usb_hcd *hcd = platform_get_drvdata(dev);
- struct usb_ohci_pdata *pdata = dev->dev.platform_data;
+ struct usb_ohci_pdata *pdata = dev_get_platdata(&dev->dev);
+ struct ohci_platform_priv *priv = hcd_to_ohci_priv(hcd);
+ int clk;
usb_remove_hcd(hcd);
- usb_put_hcd(hcd);
- platform_set_drvdata(dev, NULL);
if (pdata->power_off)
pdata->power_off(dev);
+ if (priv->rst)
+ reset_control_assert(priv->rst);
+
+ for (clk = 0; clk < OHCI_MAX_CLKS && priv->clks[clk]; clk++)
+ clk_put(priv->clks[clk]);
+
+ usb_put_hcd(hcd);
+
+ if (pdata == &ohci_platform_defaults)
+ dev->dev.platform_data = NULL;
+
return 0;
}
-#ifdef CONFIG_PM
-
+#ifdef CONFIG_PM_SLEEP
static int ohci_platform_suspend(struct device *dev)
{
+ struct usb_hcd *hcd = dev_get_drvdata(dev);
struct usb_ohci_pdata *pdata = dev->platform_data;
struct platform_device *pdev =
container_of(dev, struct platform_device, dev);
+ bool do_wakeup = device_may_wakeup(dev);
+ int ret;
+
+ ret = ohci_suspend(hcd, do_wakeup);
+ if (ret)
+ return ret;
if (pdata->power_suspend)
pdata->power_suspend(pdev);
- return 0;
+ return ret;
}
static int ohci_platform_resume(struct device *dev)
{
struct usb_hcd *hcd = dev_get_drvdata(dev);
- struct usb_ohci_pdata *pdata = dev->platform_data;
+ struct usb_ohci_pdata *pdata = dev_get_platdata(dev);
struct platform_device *pdev =
container_of(dev, struct platform_device, dev);
ohci_resume(hcd, false);
return 0;
}
+#endif /* CONFIG_PM_SLEEP */
-#else /* !CONFIG_PM */
-#define ohci_platform_suspend NULL
-#define ohci_platform_resume NULL
-#endif /* CONFIG_PM */
+static const struct of_device_id ohci_platform_ids[] = {
+ { .compatible = "generic-ohci", },
+ { }
+};
+MODULE_DEVICE_TABLE(of, ohci_platform_ids);
static const struct platform_device_id ohci_platform_table[] = {
{ "ohci-platform", 0 },
};
MODULE_DEVICE_TABLE(platform, ohci_platform_table);
-static const struct dev_pm_ops ohci_platform_pm_ops = {
- .suspend = ohci_platform_suspend,
- .resume = ohci_platform_resume,
-};
+static SIMPLE_DEV_PM_OPS(ohci_platform_pm_ops, ohci_platform_suspend,
+ ohci_platform_resume);
static struct platform_driver ohci_platform_driver = {
.id_table = ohci_platform_table,
.remove = ohci_platform_remove,
.shutdown = usb_hcd_platform_shutdown,
.driver = {
- .owner = THIS_MODULE,
.name = "ohci-platform",
.pm = &ohci_platform_pm_ops,
+ .of_match_table = ohci_platform_ids,
}
};
+
+static int __init ohci_platform_init(void)
+{
+ if (usb_disabled())
+ return -ENODEV;
+
+ pr_info("%s: " DRIVER_DESC "\n", hcd_name);
+
+ ohci_init_driver(&ohci_platform_hc_driver, &platform_overrides);
+ return platform_driver_register(&ohci_platform_driver);
+}
+module_init(ohci_platform_init);
+
+static void __exit ohci_platform_cleanup(void)
+{
+ platform_driver_unregister(&ohci_platform_driver);
+}
+module_exit(ohci_platform_cleanup);
+
+MODULE_DESCRIPTION(DRIVER_DESC);
+MODULE_AUTHOR("Hauke Mehrtens");
+MODULE_AUTHOR("Alan Stern");
+MODULE_LICENSE("GPL");
projects / firefly-linux-kernel-4.4.55.git / commitdiff