357 lines
9.1 KiB
C
357 lines
9.1 KiB
C
/*
|
|
* Copyright (c) 2005 MontaVista Software
|
|
*
|
|
* 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.
|
|
*
|
|
* This program is distributed in the hope that it will be useful, but
|
|
* WITHOUT ANY WARRANTY; without even the implied warranty of MERCHANTABILITY
|
|
* or FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License
|
|
* for more details.
|
|
*
|
|
* You should have received a copy of the GNU General Public License
|
|
* along with this program; if not, write to the Free Software Foundation,
|
|
* Inc., 675 Mass Ave, Cambridge, MA 02139, USA.
|
|
*
|
|
* Ported to 834x by Randy Vinson <rvinson@mvista.com> using code provided
|
|
* by Hunter Wu.
|
|
*/
|
|
|
|
#include <linux/platform_device.h>
|
|
#include <linux/fsl_devices.h>
|
|
|
|
#include "ehci-fsl.h"
|
|
|
|
/* FIXME: Power Management is un-ported so temporarily disable it */
|
|
#undef CONFIG_PM
|
|
|
|
|
|
/* configure so an HC device and id are always provided */
|
|
/* always called with process context; sleeping is OK */
|
|
|
|
/**
|
|
* usb_hcd_fsl_probe - initialize FSL-based HCDs
|
|
* @drvier: Driver to be used for this HCD
|
|
* @pdev: USB Host Controller being probed
|
|
* Context: !in_interrupt()
|
|
*
|
|
* Allocates basic resources for this USB host controller.
|
|
*
|
|
*/
|
|
int usb_hcd_fsl_probe(const struct hc_driver *driver,
|
|
struct platform_device *pdev)
|
|
{
|
|
struct fsl_usb2_platform_data *pdata;
|
|
struct usb_hcd *hcd;
|
|
struct resource *res;
|
|
int irq;
|
|
int retval;
|
|
unsigned int temp;
|
|
|
|
pr_debug("initializing FSL-SOC USB Controller\n");
|
|
|
|
/* Need platform data for setup */
|
|
pdata = (struct fsl_usb2_platform_data *)pdev->dev.platform_data;
|
|
if (!pdata) {
|
|
dev_err(&pdev->dev,
|
|
"No platform data for %s.\n", dev_name(&pdev->dev));
|
|
return -ENODEV;
|
|
}
|
|
|
|
/*
|
|
* This is a host mode driver, verify that we're supposed to be
|
|
* in host mode.
|
|
*/
|
|
if (!((pdata->operating_mode == FSL_USB2_DR_HOST) ||
|
|
(pdata->operating_mode == FSL_USB2_MPH_HOST) ||
|
|
(pdata->operating_mode == FSL_USB2_DR_OTG))) {
|
|
dev_err(&pdev->dev,
|
|
"Non Host Mode configured for %s. Wrong driver linked.\n",
|
|
dev_name(&pdev->dev));
|
|
return -ENODEV;
|
|
}
|
|
|
|
res = platform_get_resource(pdev, IORESOURCE_IRQ, 0);
|
|
if (!res) {
|
|
dev_err(&pdev->dev,
|
|
"Found HC with no IRQ. Check %s setup!\n",
|
|
dev_name(&pdev->dev));
|
|
return -ENODEV;
|
|
}
|
|
irq = res->start;
|
|
|
|
hcd = usb_create_hcd(driver, &pdev->dev, dev_name(&pdev->dev));
|
|
if (!hcd) {
|
|
retval = -ENOMEM;
|
|
goto err1;
|
|
}
|
|
|
|
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));
|
|
retval = -ENODEV;
|
|
goto err2;
|
|
}
|
|
hcd->rsrc_start = res->start;
|
|
hcd->rsrc_len = res->end - res->start + 1;
|
|
if (!request_mem_region(hcd->rsrc_start, hcd->rsrc_len,
|
|
driver->description)) {
|
|
dev_dbg(&pdev->dev, "controller already in use\n");
|
|
retval = -EBUSY;
|
|
goto err2;
|
|
}
|
|
hcd->regs = ioremap(hcd->rsrc_start, hcd->rsrc_len);
|
|
|
|
if (hcd->regs == NULL) {
|
|
dev_dbg(&pdev->dev, "error mapping memory\n");
|
|
retval = -EFAULT;
|
|
goto err3;
|
|
}
|
|
|
|
/* Enable USB controller */
|
|
temp = in_be32(hcd->regs + 0x500);
|
|
out_be32(hcd->regs + 0x500, temp | 0x4);
|
|
|
|
/* Set to Host mode */
|
|
temp = in_le32(hcd->regs + 0x1a8);
|
|
out_le32(hcd->regs + 0x1a8, temp | 0x3);
|
|
|
|
retval = usb_add_hcd(hcd, irq, IRQF_DISABLED | IRQF_SHARED);
|
|
if (retval != 0)
|
|
goto err4;
|
|
return retval;
|
|
|
|
err4:
|
|
iounmap(hcd->regs);
|
|
err3:
|
|
release_mem_region(hcd->rsrc_start, hcd->rsrc_len);
|
|
err2:
|
|
usb_put_hcd(hcd);
|
|
err1:
|
|
dev_err(&pdev->dev, "init %s fail, %d\n", dev_name(&pdev->dev), retval);
|
|
return retval;
|
|
}
|
|
|
|
/* may be called without controller electrically present */
|
|
/* may be called with controller, bus, and devices active */
|
|
|
|
/**
|
|
* usb_hcd_fsl_remove - shutdown processing for FSL-based HCDs
|
|
* @dev: USB Host Controller being removed
|
|
* Context: !in_interrupt()
|
|
*
|
|
* Reverses the effect of usb_hcd_fsl_probe().
|
|
*
|
|
*/
|
|
void usb_hcd_fsl_remove(struct usb_hcd *hcd, struct platform_device *pdev)
|
|
{
|
|
usb_remove_hcd(hcd);
|
|
iounmap(hcd->regs);
|
|
release_mem_region(hcd->rsrc_start, hcd->rsrc_len);
|
|
usb_put_hcd(hcd);
|
|
}
|
|
|
|
static void mpc83xx_setup_phy(struct ehci_hcd *ehci,
|
|
enum fsl_usb2_phy_modes phy_mode,
|
|
unsigned int port_offset)
|
|
{
|
|
u32 portsc = 0;
|
|
switch (phy_mode) {
|
|
case FSL_USB2_PHY_ULPI:
|
|
portsc |= PORT_PTS_ULPI;
|
|
break;
|
|
case FSL_USB2_PHY_SERIAL:
|
|
portsc |= PORT_PTS_SERIAL;
|
|
break;
|
|
case FSL_USB2_PHY_UTMI_WIDE:
|
|
portsc |= PORT_PTS_PTW;
|
|
/* fall through */
|
|
case FSL_USB2_PHY_UTMI:
|
|
portsc |= PORT_PTS_UTMI;
|
|
break;
|
|
case FSL_USB2_PHY_NONE:
|
|
break;
|
|
}
|
|
ehci_writel(ehci, portsc, &ehci->regs->port_status[port_offset]);
|
|
}
|
|
|
|
static void mpc83xx_usb_setup(struct usb_hcd *hcd)
|
|
{
|
|
struct ehci_hcd *ehci = hcd_to_ehci(hcd);
|
|
struct fsl_usb2_platform_data *pdata;
|
|
void __iomem *non_ehci = hcd->regs;
|
|
u32 temp;
|
|
|
|
pdata =
|
|
(struct fsl_usb2_platform_data *)hcd->self.controller->
|
|
platform_data;
|
|
/* Enable PHY interface in the control reg. */
|
|
temp = in_be32(non_ehci + FSL_SOC_USB_CTRL);
|
|
out_be32(non_ehci + FSL_SOC_USB_CTRL, temp | 0x00000004);
|
|
out_be32(non_ehci + FSL_SOC_USB_SNOOP1, 0x0000001b);
|
|
|
|
#if defined(CONFIG_PPC32) && !defined(CONFIG_NOT_COHERENT_CACHE)
|
|
/*
|
|
* Turn on cache snooping hardware, since some PowerPC platforms
|
|
* wholly rely on hardware to deal with cache coherent
|
|
*/
|
|
|
|
/* Setup Snooping for all the 4GB space */
|
|
/* SNOOP1 starts from 0x0, size 2G */
|
|
out_be32(non_ehci + FSL_SOC_USB_SNOOP1, 0x0 | SNOOP_SIZE_2GB);
|
|
/* SNOOP2 starts from 0x80000000, size 2G */
|
|
out_be32(non_ehci + FSL_SOC_USB_SNOOP2, 0x80000000 | SNOOP_SIZE_2GB);
|
|
#endif
|
|
|
|
if ((pdata->operating_mode == FSL_USB2_DR_HOST) ||
|
|
(pdata->operating_mode == FSL_USB2_DR_OTG))
|
|
mpc83xx_setup_phy(ehci, pdata->phy_mode, 0);
|
|
|
|
if (pdata->operating_mode == FSL_USB2_MPH_HOST) {
|
|
unsigned int chip, rev, svr;
|
|
|
|
svr = mfspr(SPRN_SVR);
|
|
chip = svr >> 16;
|
|
rev = (svr >> 4) & 0xf;
|
|
|
|
/* Deal with USB Erratum #14 on MPC834x Rev 1.0 & 1.1 chips */
|
|
if ((rev == 1) && (chip >= 0x8050) && (chip <= 0x8055))
|
|
ehci->has_fsl_port_bug = 1;
|
|
|
|
if (pdata->port_enables & FSL_USB2_PORT0_ENABLED)
|
|
mpc83xx_setup_phy(ehci, pdata->phy_mode, 0);
|
|
if (pdata->port_enables & FSL_USB2_PORT1_ENABLED)
|
|
mpc83xx_setup_phy(ehci, pdata->phy_mode, 1);
|
|
}
|
|
|
|
/* put controller in host mode. */
|
|
ehci_writel(ehci, 0x00000003, non_ehci + FSL_SOC_USB_USBMODE);
|
|
#ifdef CONFIG_PPC_85xx
|
|
out_be32(non_ehci + FSL_SOC_USB_PRICTRL, 0x00000008);
|
|
out_be32(non_ehci + FSL_SOC_USB_AGECNTTHRSH, 0x00000080);
|
|
#else
|
|
out_be32(non_ehci + FSL_SOC_USB_PRICTRL, 0x0000000c);
|
|
out_be32(non_ehci + FSL_SOC_USB_AGECNTTHRSH, 0x00000040);
|
|
#endif
|
|
out_be32(non_ehci + FSL_SOC_USB_SICTRL, 0x00000001);
|
|
}
|
|
|
|
/* called after powerup, by probe or system-pm "wakeup" */
|
|
static int ehci_fsl_reinit(struct ehci_hcd *ehci)
|
|
{
|
|
mpc83xx_usb_setup(ehci_to_hcd(ehci));
|
|
ehci_port_power(ehci, 0);
|
|
|
|
return 0;
|
|
}
|
|
|
|
/* called during probe() after chip reset completes */
|
|
static int ehci_fsl_setup(struct usb_hcd *hcd)
|
|
{
|
|
struct ehci_hcd *ehci = hcd_to_ehci(hcd);
|
|
int retval;
|
|
|
|
/* EHCI registers start at offset 0x100 */
|
|
ehci->caps = hcd->regs + 0x100;
|
|
ehci->regs = hcd->regs + 0x100 +
|
|
HC_LENGTH(ehci_readl(ehci, &ehci->caps->hc_capbase));
|
|
dbg_hcs_params(ehci, "reset");
|
|
dbg_hcc_params(ehci, "reset");
|
|
|
|
/* cache this readonly data; minimize chip reads */
|
|
ehci->hcs_params = ehci_readl(ehci, &ehci->caps->hcs_params);
|
|
|
|
retval = ehci_halt(ehci);
|
|
if (retval)
|
|
return retval;
|
|
|
|
/* data structure init */
|
|
retval = ehci_init(hcd);
|
|
if (retval)
|
|
return retval;
|
|
|
|
hcd->has_tt = 1;
|
|
|
|
ehci->sbrn = 0x20;
|
|
|
|
ehci_reset(ehci);
|
|
|
|
retval = ehci_fsl_reinit(ehci);
|
|
return retval;
|
|
}
|
|
|
|
static const struct hc_driver ehci_fsl_hc_driver = {
|
|
.description = hcd_name,
|
|
.product_desc = "Freescale On-Chip EHCI Host Controller",
|
|
.hcd_priv_size = sizeof(struct ehci_hcd),
|
|
|
|
/*
|
|
* generic hardware linkage
|
|
*/
|
|
.irq = ehci_irq,
|
|
.flags = HCD_USB2,
|
|
|
|
/*
|
|
* basic lifecycle operations
|
|
*/
|
|
.reset = ehci_fsl_setup,
|
|
.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,
|
|
|
|
/*
|
|
* scheduling support
|
|
*/
|
|
.get_frame_number = ehci_get_frame,
|
|
|
|
/*
|
|
* root hub support
|
|
*/
|
|
.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,
|
|
};
|
|
|
|
static int ehci_fsl_drv_probe(struct platform_device *pdev)
|
|
{
|
|
if (usb_disabled())
|
|
return -ENODEV;
|
|
|
|
/* FIXME we only want one one probe() not two */
|
|
return usb_hcd_fsl_probe(&ehci_fsl_hc_driver, pdev);
|
|
}
|
|
|
|
static int ehci_fsl_drv_remove(struct platform_device *pdev)
|
|
{
|
|
struct usb_hcd *hcd = platform_get_drvdata(pdev);
|
|
|
|
/* FIXME we only want one one remove() not two */
|
|
usb_hcd_fsl_remove(hcd, pdev);
|
|
return 0;
|
|
}
|
|
|
|
MODULE_ALIAS("platform:fsl-ehci");
|
|
|
|
static struct platform_driver ehci_fsl_driver = {
|
|
.probe = ehci_fsl_drv_probe,
|
|
.remove = ehci_fsl_drv_remove,
|
|
.shutdown = usb_hcd_platform_shutdown,
|
|
.driver = {
|
|
.name = "fsl-ehci",
|
|
},
|
|
};
|