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secgateway/kernel/linux-4.14.83/drivers/usb/host/ehci-fsl.c

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/*
* Copyright 2005-2009 MontaVista Software, Inc.
* Copyright 2008,2012,2015 Freescale Semiconductor, Inc.
*
* 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.
* Power Management support by Dave Liu <daveliu@freescale.com>,
* Jerry Huang <Chang-Ming.Huang@freescale.com> and
* Anton Vorontsov <avorontsov@ru.mvista.com>.
*/
#include <linux/kernel.h>
#include <linux/module.h>
#include <linux/types.h>
#include <linux/delay.h>
#include <linux/pm.h>
#include <linux/err.h>
#include <linux/usb.h>
#include <linux/usb/ehci_def.h>
#include <linux/usb/hcd.h>
#include <linux/usb/otg.h>
#include <linux/platform_device.h>
#include <linux/fsl_devices.h>
#include <linux/of_platform.h>
#include <linux/io.h>
#ifdef CONFIG_PM
#include <linux/suspend.h>
#endif
#include "ehci.h"
#include "ehci-fsl.h"
#define FSL_USB_PHY_ADDR 0xffe214000
struct ccsr_usb_port_ctrl {
u32 ctrl;
u32 drvvbuscfg;
u32 pwrfltcfg;
u32 sts;
u8 res_14[0xc];
u32 bistcfg;
u32 biststs;
u32 abistcfg;
u32 abiststs;
u8 res_30[0x10];
u32 xcvrprg;
u32 anaprg;
u32 anadrv;
u32 anasts;
};
struct ccsr_usb_phy {
u32 id;
struct ccsr_usb_port_ctrl port1;
u8 res_50[0xc];
u32 tvr;
u32 pllprg[4];
u8 res_70[0x4];
u32 anaccfg;
u32 dbg;
u8 res_7c[0x4];
struct ccsr_usb_port_ctrl port2;
u8 res_dc[0x334];
};
#define DRIVER_DESC "Freescale EHCI Host controller driver"
#define DRV_NAME "ehci-fsl"
static struct hc_driver __read_mostly fsl_ehci_hc_driver;
struct ehci_fsl {
struct ehci_hcd ehci;
#ifdef CONFIG_PM
struct ehci_regs saved_regs;
struct ccsr_usb_phy saved_phy_regs;
/* Saved USB PHY settings, need to restore after deep sleep. */
u32 usb_ctrl;
#endif
/*
* store current hcd state for otg;
* have_hcd is true when host drv al already part of otg framework,
* otherwise false;
* hcd_add is true when otg framework wants to add host
* drv as part of otg;flase when it wants to remove it
*/
unsigned have_hcd:1;
unsigned hcd_add:1;
};
static struct ehci_fsl *hcd_to_ehci_fsl(struct usb_hcd *hcd)
{
struct ehci_hcd *ehci = hcd_to_ehci(hcd);
return container_of(ehci, struct ehci_fsl, ehci);
}
#if defined(CONFIG_FSL_USB2_OTG) || defined(CONFIG_FSL_USB2_OTG_MODULE)
static void do_change_hcd(struct work_struct *work)
{
struct ehci_hcd *ehci = container_of(work, struct ehci_hcd,
change_hcd_work);
struct usb_hcd *hcd = ehci_to_hcd(ehci);
struct ehci_fsl *ehci_fsl = hcd_to_ehci_fsl(hcd);
void __iomem *non_ehci = hcd->regs;
int retval;
if (ehci_fsl->hcd_add && !ehci_fsl->have_hcd) {
writel(USBMODE_CM_HOST, non_ehci + FSL_SOC_USB_USBMODE);
/* host, gadget and otg share same int line */
retval = usb_add_hcd(hcd, hcd->irq, IRQF_SHARED);
if (retval == 0)
ehci_fsl->have_hcd = 1;
} else if (!ehci_fsl->hcd_add && ehci_fsl->have_hcd) {
usb_remove_hcd(hcd);
ehci_fsl->have_hcd = 0;
}
}
#endif
#if defined(CONFIG_FSL_USB2_OTG) || defined(CONFIG_FSL_USB2_OTG_MODULE)
static void do_change_hcd(struct work_struct *work)
{
struct ehci_hcd *ehci = container_of(work, struct ehci_hcd,
change_hcd_work);
struct usb_hcd *hcd = ehci_to_hcd(ehci);
struct ehci_fsl *ehci_fsl = hcd_to_ehci_fsl(hcd);
void __iomem *non_ehci = hcd->regs;
int retval;
if (ehci_fsl->hcd_add && !ehci_fsl->have_hcd) {
writel(USBMODE_CM_HOST, non_ehci + FSL_SOC_USB_USBMODE);
/* host, gadget and otg share same int line */
retval = usb_add_hcd(hcd, hcd->irq, IRQF_SHARED);
if (retval == 0)
ehci_fsl->have_hcd = 1;
} else if (!ehci_fsl->hcd_add && ehci_fsl->have_hcd) {
usb_remove_hcd(hcd);
ehci_fsl->have_hcd = 0;
}
}
#endif
/* configure so an HC device and id are always provided */
/* always called with process context; sleeping is OK */
/*
* fsl_ehci_drv_probe - initialize FSL-based HCDs
* @pdev: USB Host Controller being probed
* Context: !in_interrupt()
*
* Allocates basic resources for this USB host controller.
*
*/
static int fsl_ehci_drv_probe(struct platform_device *pdev)
{
struct fsl_usb2_platform_data *pdata;
struct usb_hcd *hcd;
struct resource *res;
int irq;
int retval;
pr_debug("initializing FSL-SOC USB Controller\n");
/* Need platform data for setup */
pdata = dev_get_platdata(&pdev->dev);
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(&fsl_ehci_hc_driver, pdev->dev.parent,
&pdev->dev, dev_name(&pdev->dev), NULL);
if (!hcd) {
retval = -ENOMEM;
goto err1;
}
res = platform_get_resource(pdev, IORESOURCE_MEM, 0);
hcd->regs = devm_ioremap_resource(&pdev->dev, res);
if (IS_ERR(hcd->regs)) {
retval = PTR_ERR(hcd->regs);
goto err2;
}
hcd->rsrc_start = res->start;
hcd->rsrc_len = resource_size(res);
pdata->regs = hcd->regs;
if (pdata->power_budget)
hcd->power_budget = pdata->power_budget;
/*
* do platform specific init: check the clock, grab/config pins, etc.
*/
if (pdata->init && pdata->init(pdev)) {
retval = -ENODEV;
goto err2;
}
/* Enable USB controller, 83xx or 8536 */
if (pdata->have_sysif_regs && pdata->controller_ver < FSL_USB_VER_1_6)
clrsetbits_be32(hcd->regs + FSL_SOC_USB_CTRL,
CONTROL_REGISTER_W1C_MASK, 0x4);
/* Set USB_EN bit to select ULPI phy for USB controller version 2.5 */
if (pdata->controller_ver == FSL_USB_VER_2_5 &&
pdata->phy_mode == FSL_USB2_PHY_ULPI)
iowrite32be(USB_CTRL_USB_EN, hcd->regs + FSL_SOC_USB_CTRL);
/*
* Enable UTMI phy and program PTS field in UTMI mode before asserting
* controller reset for USB Controller version 2.5
*/
if (pdata->has_fsl_erratum_a007792) {
clrsetbits_be32(hcd->regs + FSL_SOC_USB_CTRL,
CONTROL_REGISTER_W1C_MASK, CTRL_UTMI_PHY_EN);
writel(PORT_PTS_UTMI, hcd->regs + FSL_SOC_USB_PORTSC1);
}
/* Don't need to set host mode here. It will be done by tdi_reset() */
retval = usb_add_hcd(hcd, irq, IRQF_SHARED | IRQF_NO_SUSPEND);
if (retval != 0)
goto err2;
device_wakeup_enable(hcd->self.controller);
#if defined(CONFIG_FSL_USB2_OTG) || defined(CONFIG_FSL_USB2_OTG_MODULE)
if (pdata->operating_mode == FSL_USB2_DR_OTG) {
struct ehci_hcd *ehci = hcd_to_ehci(hcd);
struct ehci_fsl *ehci_fsl = hcd_to_ehci_fsl(hcd);
hcd->usb_phy = usb_get_phy(USB_PHY_TYPE_USB2);
INIT_WORK(&ehci->change_hcd_work, do_change_hcd);
dev_dbg(&pdev->dev, "hcd=0x%p ehci=0x%p, phy=0x%p\n",
hcd, ehci, hcd->usb_phy);
if (!IS_ERR_OR_NULL(hcd->usb_phy)) {
retval = otg_set_host(hcd->usb_phy->otg,
&ehci_to_hcd(ehci)->self);
if (retval) {
usb_put_phy(hcd->usb_phy);
goto err2;
}
} else {
dev_err(&pdev->dev, "can't find phy\n");
retval = -ENODEV;
goto err2;
}
ehci_fsl->have_hcd = 1;
} else {
dev_err(&pdev->dev, "wrong operating mode\n");
return -ENODEV;
}
#endif
return retval;
err2:
usb_put_hcd(hcd);
err1:
dev_err(&pdev->dev, "init %s fail, %d\n", dev_name(&pdev->dev), retval);
if (pdata->exit)
pdata->exit(pdev);
return retval;
}
static bool usb_phy_clk_valid(struct usb_hcd *hcd)
{
void __iomem *non_ehci = hcd->regs;
bool ret = true;
if (!(ioread32be(non_ehci + FSL_SOC_USB_CTRL) & PHY_CLK_VALID))
ret = false;
return ret;
}
static int ehci_fsl_setup_phy(struct usb_hcd *hcd,
enum fsl_usb2_phy_modes phy_mode,
unsigned int port_offset)
{
u32 portsc;
struct ehci_hcd *ehci = hcd_to_ehci(hcd);
void __iomem *non_ehci = hcd->regs;
struct device *dev = hcd->self.controller;
struct fsl_usb2_platform_data *pdata = dev_get_platdata(dev);
if (pdata->controller_ver < 0) {
dev_warn(hcd->self.controller, "Could not get controller version\n");
return -ENODEV;
}
portsc = ehci_readl(ehci, &ehci->regs->port_status[port_offset]);
portsc &= ~(PORT_PTS_MSK | PORT_PTS_PTW);
switch (phy_mode) {
case FSL_USB2_PHY_ULPI:
if (pdata->have_sysif_regs && pdata->controller_ver) {
/* controller version 1.6 or above */
clrbits32(non_ehci + FSL_SOC_USB_CTRL,
CONTROL_REGISTER_W1C_MASK | UTMI_PHY_EN);
clrsetbits_be32(non_ehci + FSL_SOC_USB_CTRL,
CONTROL_REGISTER_W1C_MASK,
ULPI_PHY_CLK_SEL | USB_CTRL_USB_EN);
}
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:
case FSL_USB2_PHY_UTMI_DUAL:
if (pdata->has_fsl_erratum_a006918) {
pr_warn("fsl-ehci: USB PHY clock invalid\n");
return -EINVAL;
}
/* PHY_CLK_VALID bit is de-featured from all controller
* versions below 2.4 and is to be checked only for
* internal UTMI phy
*/
if (pdata->controller_ver > FSL_USB_VER_2_4 &&
pdata->have_sysif_regs && !usb_phy_clk_valid(hcd)) {
pr_err("fsl-ehci: USB PHY clock invalid\n");
return -EINVAL;
}
if (pdata->have_sysif_regs && pdata->controller_ver) {
/* controller version 1.6 or above */
clrsetbits_be32(non_ehci + FSL_SOC_USB_CTRL,
CONTROL_REGISTER_W1C_MASK, UTMI_PHY_EN);
mdelay(FSL_UTMI_PHY_DLY); /* Delay for UTMI PHY CLK to
become stable - 10ms*/
}
/* enable UTMI PHY */
if (pdata->have_sysif_regs)
clrsetbits_be32(non_ehci + FSL_SOC_USB_CTRL,
CONTROL_REGISTER_W1C_MASK,
CTRL_UTMI_PHY_EN);
portsc |= PORT_PTS_UTMI;
break;
case FSL_USB2_PHY_NONE:
break;
}
/*
* check PHY_CLK_VALID to determine phy clock presence before writing
* to portsc
*/
if (pdata->check_phy_clk_valid) {
if (!(ioread32be(non_ehci + FSL_SOC_USB_CTRL) &
PHY_CLK_VALID)) {
dev_warn(hcd->self.controller,
"USB PHY clock invalid\n");
return -EINVAL;
}
}
ehci_writel(ehci, portsc, &ehci->regs->port_status[port_offset]);
if (phy_mode != FSL_USB2_PHY_ULPI && pdata->have_sysif_regs)
clrsetbits_be32(non_ehci + FSL_SOC_USB_CTRL,
CONTROL_REGISTER_W1C_MASK, USB_CTRL_USB_EN);
return 0;
}
static int ehci_fsl_usb_setup(struct ehci_hcd *ehci)
{
struct usb_hcd *hcd = ehci_to_hcd(ehci);
struct fsl_usb2_platform_data *pdata;
void __iomem *non_ehci = hcd->regs;
pdata = dev_get_platdata(hcd->self.controller);
if (pdata->have_sysif_regs) {
/*
* 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 */
iowrite32be(0x0 | SNOOP_SIZE_2GB,
non_ehci + FSL_SOC_USB_SNOOP1);
/* SNOOP2 starts from 0x80000000, size 2G */
iowrite32be(0x80000000 | SNOOP_SIZE_2GB,
non_ehci + FSL_SOC_USB_SNOOP2);
}
/* Deal with USB erratum A-005275 */
if (pdata->has_fsl_erratum_a005275 == 1)
ehci->has_fsl_hs_errata = 1;
if (pdata->has_fsl_erratum_a005697 == 1)
ehci->has_fsl_susp_errata = 1;
if ((pdata->operating_mode == FSL_USB2_DR_HOST) ||
(pdata->operating_mode == FSL_USB2_DR_OTG))
if (ehci_fsl_setup_phy(hcd, pdata->phy_mode, 0))
return -EINVAL;
if (pdata->operating_mode == FSL_USB2_MPH_HOST) {
/* Deal with USB Erratum #14 on MPC834x Rev 1.0 & 1.1 chips */
if (pdata->has_fsl_erratum_14 == 1)
ehci->has_fsl_port_bug = 1;
if (pdata->port_enables & FSL_USB2_PORT0_ENABLED)
if (ehci_fsl_setup_phy(hcd, pdata->phy_mode, 0))
return -EINVAL;
if (pdata->port_enables & FSL_USB2_PORT1_ENABLED)
if (ehci_fsl_setup_phy(hcd, pdata->phy_mode, 1))
return -EINVAL;
}
if (pdata->have_sysif_regs) {
#ifdef CONFIG_FSL_SOC_BOOKE
iowrite32be(0x00000008, non_ehci + FSL_SOC_USB_PRICTRL);
iowrite32be(0x00000080, non_ehci + FSL_SOC_USB_AGECNTTHRSH);
#else
iowrite32be(0x0000000c, non_ehci + FSL_SOC_USB_PRICTRL);
iowrite32be(0x00000040, non_ehci + FSL_SOC_USB_AGECNTTHRSH);
#endif
iowrite32be(0x00000001, non_ehci + FSL_SOC_USB_SICTRL);
}
return 0;
}
/* called after powerup, by probe or system-pm "wakeup" */
static int ehci_fsl_reinit(struct ehci_hcd *ehci)
{
if (ehci_fsl_usb_setup(ehci))
return -EINVAL;
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;
struct fsl_usb2_platform_data *pdata;
struct device *dev;
dev = hcd->self.controller;
pdata = dev_get_platdata(hcd->self.controller);
ehci->big_endian_desc = pdata->big_endian_desc;
ehci->big_endian_mmio = pdata->big_endian_mmio;
/* EHCI registers start at offset 0x100 */
ehci->caps = hcd->regs + 0x100;
#ifdef CONFIG_PPC_83xx
/*
* Deal with MPC834X that need port power to be cycled after the power
* fault condition is removed. Otherwise the state machine does not
* reflect PORTSC[CSC] correctly.
*/
ehci->need_oc_pp_cycle = 1;
#endif
hcd->has_tt = 1;
retval = ehci_setup(hcd);
if (retval)
return retval;
if (of_device_is_compatible(dev->parent->of_node,
"fsl,mpc5121-usb2-dr")) {
/*
* set SBUSCFG:AHBBRST so that control msgs don't
* fail when doing heavy PATA writes.
*/
ehci_writel(ehci, SBUSCFG_INCR8,
hcd->regs + FSL_SOC_USB_SBUSCFG);
}
retval = ehci_fsl_reinit(ehci);
return retval;
}
#ifdef CONFIG_PM
void __iomem *phy_reg;
#ifdef CONFIG_PPC
/* save usb registers */
static int ehci_fsl_save_context(struct usb_hcd *hcd)
{
struct ehci_fsl *ehci_fsl = hcd_to_ehci_fsl(hcd);
struct ehci_hcd *ehci = hcd_to_ehci(hcd);
void __iomem *non_ehci = hcd->regs;
struct device *dev = hcd->self.controller;
struct fsl_usb2_platform_data *pdata = dev_get_platdata(dev);
if (pdata->phy_mode == FSL_USB2_PHY_UTMI_DUAL) {
phy_reg = ioremap(FSL_USB_PHY_ADDR,
sizeof(struct ccsr_usb_phy));
_memcpy_fromio((void *)&ehci_fsl->saved_phy_regs, phy_reg,
sizeof(struct ccsr_usb_phy));
}
_memcpy_fromio((void *)&ehci_fsl->saved_regs, ehci->regs,
sizeof(struct ehci_regs));
ehci_fsl->usb_ctrl = ioread32be(non_ehci + FSL_SOC_USB_CTRL);
return 0;
}
/*Restore usb registers */
static int ehci_fsl_restore_context(struct usb_hcd *hcd)
{
struct ehci_fsl *ehci_fsl = hcd_to_ehci_fsl(hcd);
struct ehci_hcd *ehci = hcd_to_ehci(hcd);
void __iomem *non_ehci = hcd->regs;
struct device *dev = hcd->self.controller;
struct fsl_usb2_platform_data *pdata = dev_get_platdata(dev);
if (pdata->phy_mode == FSL_USB2_PHY_UTMI_DUAL) {
if (phy_reg)
_memcpy_toio(phy_reg,
(void *)&ehci_fsl->saved_phy_regs,
sizeof(struct ccsr_usb_phy));
}
_memcpy_toio(ehci->regs, (void *)&ehci_fsl->saved_regs,
sizeof(struct ehci_regs));
iowrite32be(ehci_fsl->usb_ctrl, non_ehci + FSL_SOC_USB_CTRL);
return 0;
}
#endif
#ifdef CONFIG_PPC_MPC512x
static int ehci_fsl_mpc512x_drv_suspend(struct device *dev)
{
struct usb_hcd *hcd = dev_get_drvdata(dev);
struct ehci_hcd *ehci = hcd_to_ehci(hcd);
struct fsl_usb2_platform_data *pdata = dev_get_platdata(dev);
u32 tmp;
#ifdef CONFIG_DYNAMIC_DEBUG
u32 mode = ehci_readl(ehci, hcd->regs + FSL_SOC_USB_USBMODE);
mode &= USBMODE_CM_MASK;
tmp = ehci_readl(ehci, hcd->regs + 0x140); /* usbcmd */
dev_dbg(dev, "suspend=%d already_suspended=%d "
"mode=%d usbcmd %08x\n", pdata->suspended,
pdata->already_suspended, mode, tmp);
#endif
/*
* If the controller is already suspended, then this must be a
* PM suspend. Remember this fact, so that we will leave the
* controller suspended at PM resume time.
*/
if (pdata->suspended) {
dev_dbg(dev, "already suspended, leaving early\n");
pdata->already_suspended = 1;
return 0;
}
dev_dbg(dev, "suspending...\n");
ehci->rh_state = EHCI_RH_SUSPENDED;
dev->power.power_state = PMSG_SUSPEND;
/* ignore non-host interrupts */
clear_bit(HCD_FLAG_HW_ACCESSIBLE, &hcd->flags);
/* stop the controller */
tmp = ehci_readl(ehci, &ehci->regs->command);
tmp &= ~CMD_RUN;
ehci_writel(ehci, tmp, &ehci->regs->command);
/* save EHCI registers */
pdata->pm_command = ehci_readl(ehci, &ehci->regs->command);
pdata->pm_command &= ~CMD_RUN;
pdata->pm_status = ehci_readl(ehci, &ehci->regs->status);
pdata->pm_intr_enable = ehci_readl(ehci, &ehci->regs->intr_enable);
pdata->pm_frame_index = ehci_readl(ehci, &ehci->regs->frame_index);
pdata->pm_segment = ehci_readl(ehci, &ehci->regs->segment);
pdata->pm_frame_list = ehci_readl(ehci, &ehci->regs->frame_list);
pdata->pm_async_next = ehci_readl(ehci, &ehci->regs->async_next);
pdata->pm_configured_flag =
ehci_readl(ehci, &ehci->regs->configured_flag);
pdata->pm_portsc = ehci_readl(ehci, &ehci->regs->port_status[0]);
pdata->pm_usbgenctrl = ehci_readl(ehci,
hcd->regs + FSL_SOC_USB_USBGENCTRL);
/* clear the W1C bits */
pdata->pm_portsc &= cpu_to_hc32(ehci, ~PORT_RWC_BITS);
pdata->suspended = 1;
/* clear PP to cut power to the port */
tmp = ehci_readl(ehci, &ehci->regs->port_status[0]);
tmp &= ~PORT_POWER;
ehci_writel(ehci, tmp, &ehci->regs->port_status[0]);
return 0;
}
static int ehci_fsl_mpc512x_drv_resume(struct device *dev)
{
struct usb_hcd *hcd = dev_get_drvdata(dev);
struct ehci_hcd *ehci = hcd_to_ehci(hcd);
struct fsl_usb2_platform_data *pdata = dev_get_platdata(dev);
u32 tmp;
dev_dbg(dev, "suspend=%d already_suspended=%d\n",
pdata->suspended, pdata->already_suspended);
/*
* If the controller was already suspended at suspend time,
* then don't resume it now.
*/
if (pdata->already_suspended) {
dev_dbg(dev, "already suspended, leaving early\n");
pdata->already_suspended = 0;
return 0;
}
if (!pdata->suspended) {
dev_dbg(dev, "not suspended, leaving early\n");
return 0;
}
pdata->suspended = 0;
dev_dbg(dev, "resuming...\n");
/* set host mode */
tmp = USBMODE_CM_HOST | (pdata->es ? USBMODE_ES : 0);
ehci_writel(ehci, tmp, hcd->regs + FSL_SOC_USB_USBMODE);
ehci_writel(ehci, pdata->pm_usbgenctrl,
hcd->regs + FSL_SOC_USB_USBGENCTRL);
ehci_writel(ehci, ISIPHYCTRL_PXE | ISIPHYCTRL_PHYE,
hcd->regs + FSL_SOC_USB_ISIPHYCTRL);
ehci_writel(ehci, SBUSCFG_INCR8, hcd->regs + FSL_SOC_USB_SBUSCFG);
/* restore EHCI registers */
ehci_writel(ehci, pdata->pm_command, &ehci->regs->command);
ehci_writel(ehci, pdata->pm_intr_enable, &ehci->regs->intr_enable);
ehci_writel(ehci, pdata->pm_frame_index, &ehci->regs->frame_index);
ehci_writel(ehci, pdata->pm_segment, &ehci->regs->segment);
ehci_writel(ehci, pdata->pm_frame_list, &ehci->regs->frame_list);
ehci_writel(ehci, pdata->pm_async_next, &ehci->regs->async_next);
ehci_writel(ehci, pdata->pm_configured_flag,
&ehci->regs->configured_flag);
ehci_writel(ehci, pdata->pm_portsc, &ehci->regs->port_status[0]);
set_bit(HCD_FLAG_HW_ACCESSIBLE, &hcd->flags);
ehci->rh_state = EHCI_RH_RUNNING;
dev->power.power_state = PMSG_ON;
tmp = ehci_readl(ehci, &ehci->regs->command);
tmp |= CMD_RUN;
ehci_writel(ehci, tmp, &ehci->regs->command);
usb_hcd_resume_root_hub(hcd);
return 0;
}
#else
static inline int ehci_fsl_mpc512x_drv_suspend(struct device *dev)
{
return 0;
}
static inline int ehci_fsl_mpc512x_drv_resume(struct device *dev)
{
return 0;
}
#endif /* CONFIG_PPC_MPC512x */
static int ehci_fsl_drv_suspend(struct device *dev)
{
struct usb_hcd *hcd = dev_get_drvdata(dev);
struct ehci_fsl *ehci_fsl = hcd_to_ehci_fsl(hcd);
void __iomem *non_ehci = hcd->regs;
#if defined(CONFIG_FSL_USB2_OTG) || defined(CONFIG_FSL_USB2_OTG_MODULE)
struct usb_bus host = hcd->self;
#endif
#ifdef CONFIG_PPC
suspend_state_t pm_state;
/* FIXME:Need to port fsl_pm.h before enable below code. */
/*pm_state = pm_suspend_state();*/
pm_state = PM_SUSPEND_MEM;
if (pm_state == PM_SUSPEND_MEM)
ehci_fsl_save_context(hcd);
#endif
if (of_device_is_compatible(dev->parent->of_node,
"fsl,mpc5121-usb2-dr")) {
return ehci_fsl_mpc512x_drv_suspend(dev);
}
#if defined(CONFIG_FSL_USB2_OTG) || defined(CONFIG_FSL_USB2_OTG_MODULE)
if (host.is_otg) {
struct ehci_hcd *ehci = hcd_to_ehci(hcd);
/* remove hcd */
ehci_fsl->hcd_add = 0;
schedule_work(&ehci->change_hcd_work);
host.is_otg = 0;
return 0;
}
#endif
ehci_prepare_ports_for_controller_suspend(hcd_to_ehci(hcd),
device_may_wakeup(dev));
if (!fsl_deep_sleep())
return 0;
ehci_fsl->usb_ctrl = ioread32be(non_ehci + FSL_SOC_USB_CTRL);
return 0;
}
static int ehci_fsl_drv_resume(struct device *dev)
{
struct usb_hcd *hcd = dev_get_drvdata(dev);
struct ehci_fsl *ehci_fsl = hcd_to_ehci_fsl(hcd);
struct ehci_hcd *ehci = hcd_to_ehci(hcd);
void __iomem *non_ehci = hcd->regs;
#if defined(CONFIG_FSL_USB2_OTG) || defined(CONFIG_FSL_USB2_OTG_MODULE)
struct usb_bus host = hcd->self;
#endif
#ifdef CONFIG_PPC
suspend_state_t pm_state;
/* FIXME:Need to port fsl_pm.h before enable below code.*/
/* pm_state = pm_suspend_state(); */
pm_state = PM_SUSPEND_MEM;
if (pm_state == PM_SUSPEND_MEM)
ehci_fsl_restore_context(hcd);
#endif
if (of_device_is_compatible(dev->parent->of_node,
"fsl,mpc5121-usb2-dr")) {
return ehci_fsl_mpc512x_drv_resume(dev);
}
#if defined(CONFIG_FSL_USB2_OTG) || defined(CONFIG_FSL_USB2_OTG_MODULE)
if (host.is_otg) {
/* add hcd */
ehci_fsl->hcd_add = 1;
schedule_work(&ehci->change_hcd_work);
usb_hcd_resume_root_hub(hcd);
host.is_otg = 0;
return 0;
}
#endif
ehci_prepare_ports_for_controller_resume(ehci);
if (!fsl_deep_sleep())
return 0;
usb_root_hub_lost_power(hcd->self.root_hub);
/* Restore USB PHY settings and enable the controller. */
iowrite32be(ehci_fsl->usb_ctrl, non_ehci + FSL_SOC_USB_CTRL);
ehci_reset(ehci);
ehci_fsl_reinit(ehci);
return 0;
}
static int ehci_fsl_drv_restore(struct device *dev)
{
struct usb_hcd *hcd = dev_get_drvdata(dev);
usb_root_hub_lost_power(hcd->self.root_hub);
return 0;
}
static const struct dev_pm_ops ehci_fsl_pm_ops = {
.suspend = ehci_fsl_drv_suspend,
.resume = ehci_fsl_drv_resume,
.restore = ehci_fsl_drv_restore,
};
#define EHCI_FSL_PM_OPS (&ehci_fsl_pm_ops)
#else
#define EHCI_FSL_PM_OPS NULL
#endif /* CONFIG_PM */
#ifdef CONFIG_USB_OTG
static int ehci_start_port_reset(struct usb_hcd *hcd, unsigned port)
{
struct ehci_hcd *ehci = hcd_to_ehci(hcd);
u32 status;
if (!port)
return -EINVAL;
port--;
/* start port reset before HNP protocol time out */
status = readl(&ehci->regs->port_status[port]);
if (!(status & PORT_CONNECT))
return -ENODEV;
/* hub_wq will finish the reset later */
if (ehci_is_TDI(ehci)) {
writel(PORT_RESET |
(status & ~(PORT_CSC | PORT_PEC | PORT_OCC)),
&ehci->regs->port_status[port]);
} else {
writel(PORT_RESET, &ehci->regs->port_status[port]);
}
return 0;
}
#else
#define ehci_start_port_reset NULL
#endif /* CONFIG_USB_OTG */
static const struct ehci_driver_overrides ehci_fsl_overrides __initconst = {
.extra_priv_size = sizeof(struct ehci_fsl),
.reset = ehci_fsl_setup,
};
/**
* fsl_ehci_drv_remove - shutdown processing for FSL-based HCDs
* @dev: USB Host Controller being removed
* Context: !in_interrupt()
*
* Reverses the effect of usb_hcd_fsl_probe().
*
*/
static int fsl_ehci_drv_remove(struct platform_device *pdev)
{
struct fsl_usb2_platform_data *pdata = dev_get_platdata(&pdev->dev);
struct usb_hcd *hcd = platform_get_drvdata(pdev);
if (!IS_ERR_OR_NULL(hcd->usb_phy)) {
otg_set_host(hcd->usb_phy->otg, NULL);
usb_put_phy(hcd->usb_phy);
}
usb_remove_hcd(hcd);
/*
* do platform specific un-initialization:
* release iomux pins, disable clock, etc.
*/
if (pdata->exit)
pdata->exit(pdev);
usb_put_hcd(hcd);
return 0;
}
static struct platform_driver ehci_fsl_driver = {
.probe = fsl_ehci_drv_probe,
.remove = fsl_ehci_drv_remove,
.shutdown = usb_hcd_platform_shutdown,
.driver = {
.name = "fsl-ehci",
.pm = EHCI_FSL_PM_OPS,
},
};
static int __init ehci_fsl_init(void)
{
if (usb_disabled())
return -ENODEV;
pr_info(DRV_NAME ": " DRIVER_DESC "\n");
ehci_init_driver(&fsl_ehci_hc_driver, &ehci_fsl_overrides);
fsl_ehci_hc_driver.product_desc =
"Freescale On-Chip EHCI Host Controller";
fsl_ehci_hc_driver.start_port_reset = ehci_start_port_reset;
return platform_driver_register(&ehci_fsl_driver);
}
module_init(ehci_fsl_init);
static void __exit ehci_fsl_cleanup(void)
{
platform_driver_unregister(&ehci_fsl_driver);
}
module_exit(ehci_fsl_cleanup);
MODULE_DESCRIPTION(DRIVER_DESC);
MODULE_LICENSE("GPL");
MODULE_ALIAS("platform:" DRV_NAME);
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