linux/drivers/usb/host/ehci-sh.c
Peter Chen 3c9740a117 usb: hcd: move controller wakeup setting initialization to individual driver
Individual controller driver has different requirement for wakeup
setting, so move it from core to itself. In order to align with
current etting the default wakeup setting is enabled (except for
chipidea host).

Pass compile test with below commands:
	make O=outout/all allmodconfig
	make -j$CPU_NUM O=outout/all drivers/usb

Signed-off-by: Peter Chen <peter.chen@freescale.com>
Acked-by: Alan Stern <stern@rowland.harvard.edu>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
2013-12-08 18:06:46 -08:00

207 lines
4.4 KiB
C

/*
* SuperH EHCI host controller driver
*
* Copyright (C) 2010 Paul Mundt
*
* Based on ohci-sh.c and ehci-atmel.c.
*
* This file is subject to the terms and conditions of the GNU General Public
* License. See the file "COPYING" in the main directory of this archive
* for more details.
*/
#include <linux/platform_device.h>
#include <linux/clk.h>
#include <linux/platform_data/ehci-sh.h>
struct ehci_sh_priv {
struct clk *iclk, *fclk;
struct usb_hcd *hcd;
};
static int ehci_sh_reset(struct usb_hcd *hcd)
{
struct ehci_hcd *ehci = hcd_to_ehci(hcd);
ehci->caps = hcd->regs;
return ehci_setup(hcd);
}
static const struct hc_driver ehci_sh_hc_driver = {
.description = hcd_name,
.product_desc = "SuperH EHCI",
.hcd_priv_size = sizeof(struct ehci_hcd),
/*
* generic hardware linkage
*/
.irq = ehci_irq,
.flags = HCD_USB2 | HCD_MEMORY | HCD_BH,
/*
* basic lifecycle operations
*/
.reset = ehci_sh_reset,
.start = ehci_run,
.stop = ehci_stop,
.shutdown = ehci_shutdown,
/*
* managing i/o requests and associated device resources
*/
.urb_enqueue = ehci_urb_enqueue,
.urb_dequeue = ehci_urb_dequeue,
.endpoint_disable = ehci_endpoint_disable,
.endpoint_reset = ehci_endpoint_reset,
/*
* scheduling support
*/
.get_frame_number = ehci_get_frame,
/*
* root hub support
*/
.hub_status_data = ehci_hub_status_data,
.hub_control = ehci_hub_control,
#ifdef CONFIG_PM
.bus_suspend = ehci_bus_suspend,
.bus_resume = ehci_bus_resume,
#endif
.relinquish_port = ehci_relinquish_port,
.port_handed_over = ehci_port_handed_over,
.clear_tt_buffer_complete = ehci_clear_tt_buffer_complete,
};
static int ehci_hcd_sh_probe(struct platform_device *pdev)
{
struct resource *res;
struct ehci_sh_priv *priv;
struct ehci_sh_platdata *pdata;
struct usb_hcd *hcd;
int irq, ret;
if (usb_disabled())
return -ENODEV;
res = platform_get_resource(pdev, IORESOURCE_MEM, 0);
if (!res) {
dev_err(&pdev->dev,
"Found HC with no register addr. Check %s setup!\n",
dev_name(&pdev->dev));
ret = -ENODEV;
goto fail_create_hcd;
}
irq = platform_get_irq(pdev, 0);
if (irq <= 0) {
dev_err(&pdev->dev,
"Found HC with no IRQ. Check %s setup!\n",
dev_name(&pdev->dev));
ret = -ENODEV;
goto fail_create_hcd;
}
pdata = dev_get_platdata(&pdev->dev);
/* initialize hcd */
hcd = usb_create_hcd(&ehci_sh_hc_driver, &pdev->dev,
dev_name(&pdev->dev));
if (!hcd) {
ret = -ENOMEM;
goto fail_create_hcd;
}
hcd->rsrc_start = res->start;
hcd->rsrc_len = resource_size(res);
hcd->regs = devm_ioremap_resource(&pdev->dev, res);
if (IS_ERR(hcd->regs)) {
ret = PTR_ERR(hcd->regs);
goto fail_request_resource;
}
priv = devm_kzalloc(&pdev->dev, sizeof(struct ehci_sh_priv),
GFP_KERNEL);
if (!priv) {
dev_dbg(&pdev->dev, "error allocating priv data\n");
ret = -ENOMEM;
goto fail_request_resource;
}
/* These are optional, we don't care if they fail */
priv->fclk = devm_clk_get(&pdev->dev, "usb_fck");
if (IS_ERR(priv->fclk))
priv->fclk = NULL;
priv->iclk = devm_clk_get(&pdev->dev, "usb_ick");
if (IS_ERR(priv->iclk))
priv->iclk = NULL;
clk_enable(priv->fclk);
clk_enable(priv->iclk);
if (pdata && pdata->phy_init)
pdata->phy_init();
ret = usb_add_hcd(hcd, irq, IRQF_SHARED);
if (ret != 0) {
dev_err(&pdev->dev, "Failed to add hcd");
goto fail_add_hcd;
}
device_wakeup_enable(hcd->self.controller);
priv->hcd = hcd;
platform_set_drvdata(pdev, priv);
return ret;
fail_add_hcd:
clk_disable(priv->iclk);
clk_disable(priv->fclk);
fail_request_resource:
usb_put_hcd(hcd);
fail_create_hcd:
dev_err(&pdev->dev, "init %s fail, %d\n", dev_name(&pdev->dev), ret);
return ret;
}
static int ehci_hcd_sh_remove(struct platform_device *pdev)
{
struct ehci_sh_priv *priv = platform_get_drvdata(pdev);
struct usb_hcd *hcd = priv->hcd;
usb_remove_hcd(hcd);
usb_put_hcd(hcd);
clk_disable(priv->fclk);
clk_disable(priv->iclk);
return 0;
}
static void ehci_hcd_sh_shutdown(struct platform_device *pdev)
{
struct ehci_sh_priv *priv = platform_get_drvdata(pdev);
struct usb_hcd *hcd = priv->hcd;
if (hcd->driver->shutdown)
hcd->driver->shutdown(hcd);
}
static struct platform_driver ehci_hcd_sh_driver = {
.probe = ehci_hcd_sh_probe,
.remove = ehci_hcd_sh_remove,
.shutdown = ehci_hcd_sh_shutdown,
.driver = {
.name = "sh_ehci",
.owner = THIS_MODULE,
},
};
MODULE_ALIAS("platform:sh_ehci");