336 lines
8.5 KiB
C
336 lines
8.5 KiB
C
|
// SPDX-License-Identifier: GPL-2.0+
|
||
|
|
/*
|
||
|
|
* Freescale QUICC Engine USB Host Controller Driver
|
||
|
|
*
|
||
|
|
* Copyright (c) Freescale Semicondutor, Inc. 2006.
|
||
|
|
* Shlomi Gridish <gridish@freescale.com>
|
||
|
|
* Jerry Huang <Chang-Ming.Huang@freescale.com>
|
||
|
|
* Copyright (c) Logic Product Development, Inc. 2007
|
||
|
|
* Peter Barada <peterb@logicpd.com>
|
||
|
|
* Copyright (c) MontaVista Software, Inc. 2008.
|
||
|
|
* Anton Vorontsov <avorontsov@ru.mvista.com>
|
||
|
|
*/
|
||
|
|
|
||
|
|
#include <linux/kernel.h>
|
||
|
|
#include <linux/types.h>
|
||
|
|
#include <linux/spinlock.h>
|
||
|
|
#include <linux/delay.h>
|
||
|
|
#include <linux/errno.h>
|
||
|
|
#include <linux/io.h>
|
||
|
|
#include <linux/usb.h>
|
||
|
|
#include <linux/usb/hcd.h>
|
||
|
|
#include <linux/gpio/consumer.h>
|
||
|
|
#include <soc/fsl/qe/qe.h>
|
||
|
|
#include "fhci.h"
|
||
|
|
|
||
|
|
/* virtual root hub specific descriptor */
|
||
|
|
static u8 root_hub_des[] = {
|
||
|
|
0x09, /* blength */
|
||
|
|
USB_DT_HUB, /* bDescriptorType;hub-descriptor */
|
||
|
|
0x01, /* bNbrPorts */
|
||
|
|
HUB_CHAR_INDV_PORT_LPSM | HUB_CHAR_NO_OCPM, /* wHubCharacteristics */
|
||
|
|
0x00, /* per-port power, no overcurrent */
|
||
|
|
0x01, /* bPwrOn2pwrGood;2ms */
|
||
|
|
0x00, /* bHubContrCurrent;0mA */
|
||
|
|
0x00, /* DeviceRemoveable */
|
||
|
|
0xff, /* PortPwrCtrlMask */
|
||
|
|
};
|
||
|
|
|
||
|
|
static void fhci_gpio_set_value(struct fhci_hcd *fhci, int gpio_nr, bool on)
|
||
|
|
{
|
||
|
|
struct gpio_desc *gpiod = fhci->gpiods[gpio_nr];
|
||
|
|
|
||
|
|
if (!gpiod)
|
||
|
|
return;
|
||
|
|
|
||
|
|
gpiod_set_value(gpiod, on);
|
||
|
|
mdelay(5);
|
||
|
|
}
|
||
|
|
|
||
|
|
void fhci_config_transceiver(struct fhci_hcd *fhci,
|
||
|
|
enum fhci_port_status status)
|
||
|
|
{
|
||
|
|
fhci_dbg(fhci, "-> %s: %d\n", __func__, status);
|
||
|
|
|
||
|
|
switch (status) {
|
||
|
|
case FHCI_PORT_POWER_OFF:
|
||
|
|
fhci_gpio_set_value(fhci, GPIO_POWER, false);
|
||
|
|
break;
|
||
|
|
case FHCI_PORT_DISABLED:
|
||
|
|
case FHCI_PORT_WAITING:
|
||
|
|
fhci_gpio_set_value(fhci, GPIO_POWER, true);
|
||
|
|
break;
|
||
|
|
case FHCI_PORT_LOW:
|
||
|
|
fhci_gpio_set_value(fhci, GPIO_SPEED, false);
|
||
|
|
break;
|
||
|
|
case FHCI_PORT_FULL:
|
||
|
|
fhci_gpio_set_value(fhci, GPIO_SPEED, true);
|
||
|
|
break;
|
||
|
|
default:
|
||
|
|
WARN_ON(1);
|
||
|
|
break;
|
||
|
|
}
|
||
|
|
|
||
|
|
fhci_dbg(fhci, "<- %s: %d\n", __func__, status);
|
||
|
|
}
|
||
|
|
|
||
|
|
/* disable the USB port by clearing the EN bit in the USBMOD register */
|
||
|
|
void fhci_port_disable(struct fhci_hcd *fhci)
|
||
|
|
{
|
||
|
|
struct fhci_usb *usb = (struct fhci_usb *)fhci->usb_lld;
|
||
|
|
enum fhci_port_status port_status;
|
||
|
|
|
||
|
|
fhci_dbg(fhci, "-> %s\n", __func__);
|
||
|
|
|
||
|
|
fhci_stop_sof_timer(fhci);
|
||
|
|
|
||
|
|
fhci_flush_all_transmissions(usb);
|
||
|
|
|
||
|
|
fhci_usb_disable_interrupt((struct fhci_usb *)fhci->usb_lld);
|
||
|
|
port_status = usb->port_status;
|
||
|
|
usb->port_status = FHCI_PORT_DISABLED;
|
||
|
|
|
||
|
|
/* Enable IDLE since we want to know if something comes along */
|
||
|
|
usb->saved_msk |= USB_E_IDLE_MASK;
|
||
|
|
out_be16(&usb->fhci->regs->usb_usbmr, usb->saved_msk);
|
||
|
|
|
||
|
|
/* check if during the disconnection process attached new device */
|
||
|
|
if (port_status == FHCI_PORT_WAITING)
|
||
|
|
fhci_device_connected_interrupt(fhci);
|
||
|
|
usb->vroot_hub->port.wPortStatus &= ~USB_PORT_STAT_ENABLE;
|
||
|
|
usb->vroot_hub->port.wPortChange |= USB_PORT_STAT_C_ENABLE;
|
||
|
|
fhci_usb_enable_interrupt((struct fhci_usb *)fhci->usb_lld);
|
||
|
|
|
||
|
|
fhci_dbg(fhci, "<- %s\n", __func__);
|
||
|
|
}
|
||
|
|
|
||
|
|
/* enable the USB port by setting the EN bit in the USBMOD register */
|
||
|
|
void fhci_port_enable(void *lld)
|
||
|
|
{
|
||
|
|
struct fhci_usb *usb = (struct fhci_usb *)lld;
|
||
|
|
struct fhci_hcd *fhci = usb->fhci;
|
||
|
|
|
||
|
|
fhci_dbg(fhci, "-> %s\n", __func__);
|
||
|
|
|
||
|
|
fhci_config_transceiver(fhci, usb->port_status);
|
||
|
|
|
||
|
|
if ((usb->port_status != FHCI_PORT_FULL) &&
|
||
|
|
(usb->port_status != FHCI_PORT_LOW))
|
||
|
|
fhci_start_sof_timer(fhci);
|
||
|
|
|
||
|
|
usb->vroot_hub->port.wPortStatus |= USB_PORT_STAT_ENABLE;
|
||
|
|
usb->vroot_hub->port.wPortChange |= USB_PORT_STAT_C_ENABLE;
|
||
|
|
|
||
|
|
fhci_dbg(fhci, "<- %s\n", __func__);
|
||
|
|
}
|
||
|
|
|
||
|
|
void fhci_io_port_generate_reset(struct fhci_hcd *fhci)
|
||
|
|
{
|
||
|
|
fhci_dbg(fhci, "-> %s\n", __func__);
|
||
|
|
|
||
|
|
gpiod_direction_output(fhci->gpiods[GPIO_USBOE], 0);
|
||
|
|
gpiod_direction_output(fhci->gpiods[GPIO_USBTP], 0);
|
||
|
|
gpiod_direction_output(fhci->gpiods[GPIO_USBTN], 0);
|
||
|
|
|
||
|
|
mdelay(5);
|
||
|
|
|
||
|
|
qe_pin_set_dedicated(fhci->pins[PIN_USBOE]);
|
||
|
|
qe_pin_set_dedicated(fhci->pins[PIN_USBTP]);
|
||
|
|
qe_pin_set_dedicated(fhci->pins[PIN_USBTN]);
|
||
|
|
|
||
|
|
fhci_dbg(fhci, "<- %s\n", __func__);
|
||
|
|
}
|
||
|
|
|
||
|
|
/* generate the RESET condition on the bus */
|
||
|
|
void fhci_port_reset(void *lld)
|
||
|
|
{
|
||
|
|
struct fhci_usb *usb = (struct fhci_usb *)lld;
|
||
|
|
struct fhci_hcd *fhci = usb->fhci;
|
||
|
|
u8 mode;
|
||
|
|
u16 mask;
|
||
|
|
|
||
|
|
fhci_dbg(fhci, "-> %s\n", __func__);
|
||
|
|
|
||
|
|
fhci_stop_sof_timer(fhci);
|
||
|
|
/* disable the USB controller */
|
||
|
|
mode = in_8(&fhci->regs->usb_usmod);
|
||
|
|
out_8(&fhci->regs->usb_usmod, mode & (~USB_MODE_EN));
|
||
|
|
|
||
|
|
/* disable idle interrupts */
|
||
|
|
mask = in_be16(&fhci->regs->usb_usbmr);
|
||
|
|
out_be16(&fhci->regs->usb_usbmr, mask & (~USB_E_IDLE_MASK));
|
||
|
|
|
||
|
|
fhci_io_port_generate_reset(fhci);
|
||
|
|
|
||
|
|
/* enable interrupt on this endpoint */
|
||
|
|
out_be16(&fhci->regs->usb_usbmr, mask);
|
||
|
|
|
||
|
|
/* enable the USB controller */
|
||
|
|
mode = in_8(&fhci->regs->usb_usmod);
|
||
|
|
out_8(&fhci->regs->usb_usmod, mode | USB_MODE_EN);
|
||
|
|
fhci_start_sof_timer(fhci);
|
||
|
|
|
||
|
|
fhci_dbg(fhci, "<- %s\n", __func__);
|
||
|
|
}
|
||
|
|
|
||
|
|
int fhci_hub_status_data(struct usb_hcd *hcd, char *buf)
|
||
|
|
{
|
||
|
|
struct fhci_hcd *fhci = hcd_to_fhci(hcd);
|
||
|
|
int ret = 0;
|
||
|
|
unsigned long flags;
|
||
|
|
|
||
|
|
fhci_dbg(fhci, "-> %s\n", __func__);
|
||
|
|
|
||
|
|
spin_lock_irqsave(&fhci->lock, flags);
|
||
|
|
|
||
|
|
if (fhci->vroot_hub->port.wPortChange & (USB_PORT_STAT_C_CONNECTION |
|
||
|
|
USB_PORT_STAT_C_ENABLE | USB_PORT_STAT_C_SUSPEND |
|
||
|
|
USB_PORT_STAT_C_RESET | USB_PORT_STAT_C_OVERCURRENT)) {
|
||
|
|
*buf = 1 << 1;
|
||
|
|
ret = 1;
|
||
|
|
fhci_dbg(fhci, "-- %s\n", __func__);
|
||
|
|
}
|
||
|
|
|
||
|
|
spin_unlock_irqrestore(&fhci->lock, flags);
|
||
|
|
|
||
|
|
fhci_dbg(fhci, "<- %s\n", __func__);
|
||
|
|
|
||
|
|
return ret;
|
||
|
|
}
|
||
|
|
|
||
|
|
int fhci_hub_control(struct usb_hcd *hcd, u16 typeReq, u16 wValue,
|
||
|
|
u16 wIndex, char *buf, u16 wLength)
|
||
|
|
{
|
||
|
|
struct fhci_hcd *fhci = hcd_to_fhci(hcd);
|
||
|
|
int retval = 0;
|
||
|
|
struct usb_hub_status *hub_status;
|
||
|
|
struct usb_port_status *port_status;
|
||
|
|
unsigned long flags;
|
||
|
|
|
||
|
|
spin_lock_irqsave(&fhci->lock, flags);
|
||
|
|
|
||
|
|
fhci_dbg(fhci, "-> %s\n", __func__);
|
||
|
|
|
||
|
|
switch (typeReq) {
|
||
|
|
case ClearHubFeature:
|
||
|
|
switch (wValue) {
|
||
|
|
case C_HUB_LOCAL_POWER:
|
||
|
|
case C_HUB_OVER_CURRENT:
|
||
|
|
break;
|
||
|
|
default:
|
||
|
|
goto error;
|
||
|
|
}
|
||
|
|
break;
|
||
|
|
case ClearPortFeature:
|
||
|
|
fhci->vroot_hub->feature &= (1 << wValue);
|
||
|
|
|
||
|
|
switch (wValue) {
|
||
|
|
case USB_PORT_FEAT_ENABLE:
|
||
|
|
fhci->vroot_hub->port.wPortStatus &=
|
||
|
|
~USB_PORT_STAT_ENABLE;
|
||
|
|
fhci_port_disable(fhci);
|
||
|
|
break;
|
||
|
|
case USB_PORT_FEAT_C_ENABLE:
|
||
|
|
fhci->vroot_hub->port.wPortChange &=
|
||
|
|
~USB_PORT_STAT_C_ENABLE;
|
||
|
|
break;
|
||
|
|
case USB_PORT_FEAT_SUSPEND:
|
||
|
|
fhci->vroot_hub->port.wPortStatus &=
|
||
|
|
~USB_PORT_STAT_SUSPEND;
|
||
|
|
fhci_stop_sof_timer(fhci);
|
||
|
|
break;
|
||
|
|
case USB_PORT_FEAT_C_SUSPEND:
|
||
|
|
fhci->vroot_hub->port.wPortChange &=
|
||
|
|
~USB_PORT_STAT_C_SUSPEND;
|
||
|
|
break;
|
||
|
|
case USB_PORT_FEAT_POWER:
|
||
|
|
fhci->vroot_hub->port.wPortStatus &=
|
||
|
|
~USB_PORT_STAT_POWER;
|
||
|
|
fhci_config_transceiver(fhci, FHCI_PORT_POWER_OFF);
|
||
|
|
break;
|
||
|
|
case USB_PORT_FEAT_C_CONNECTION:
|
||
|
|
fhci->vroot_hub->port.wPortChange &=
|
||
|
|
~USB_PORT_STAT_C_CONNECTION;
|
||
|
|
break;
|
||
|
|
case USB_PORT_FEAT_C_OVER_CURRENT:
|
||
|
|
fhci->vroot_hub->port.wPortChange &=
|
||
|
|
~USB_PORT_STAT_C_OVERCURRENT;
|
||
|
|
break;
|
||
|
|
case USB_PORT_FEAT_C_RESET:
|
||
|
|
fhci->vroot_hub->port.wPortChange &=
|
||
|
|
~USB_PORT_STAT_C_RESET;
|
||
|
|
break;
|
||
|
|
default:
|
||
|
|
goto error;
|
||
|
|
}
|
||
|
|
break;
|
||
|
|
case GetHubDescriptor:
|
||
|
|
memcpy(buf, root_hub_des, sizeof(root_hub_des));
|
||
|
|
break;
|
||
|
|
case GetHubStatus:
|
||
|
|
hub_status = (struct usb_hub_status *)buf;
|
||
|
|
hub_status->wHubStatus =
|
||
|
|
cpu_to_le16(fhci->vroot_hub->hub.wHubStatus);
|
||
|
|
hub_status->wHubChange =
|
||
|
|
cpu_to_le16(fhci->vroot_hub->hub.wHubChange);
|
||
|
|
break;
|
||
|
|
case GetPortStatus:
|
||
|
|
port_status = (struct usb_port_status *)buf;
|
||
|
|
port_status->wPortStatus =
|
||
|
|
cpu_to_le16(fhci->vroot_hub->port.wPortStatus);
|
||
|
|
port_status->wPortChange =
|
||
|
|
cpu_to_le16(fhci->vroot_hub->port.wPortChange);
|
||
|
|
break;
|
||
|
|
case SetHubFeature:
|
||
|
|
switch (wValue) {
|
||
|
|
case C_HUB_OVER_CURRENT:
|
||
|
|
case C_HUB_LOCAL_POWER:
|
||
|
|
break;
|
||
|
|
default:
|
||
|
|
goto error;
|
||
|
|
}
|
||
|
|
break;
|
||
|
|
case SetPortFeature:
|
||
|
|
fhci->vroot_hub->feature |= (1 << wValue);
|
||
|
|
|
||
|
|
switch (wValue) {
|
||
|
|
case USB_PORT_FEAT_ENABLE:
|
||
|
|
fhci->vroot_hub->port.wPortStatus |=
|
||
|
|
USB_PORT_STAT_ENABLE;
|
||
|
|
fhci_port_enable(fhci->usb_lld);
|
||
|
|
break;
|
||
|
|
case USB_PORT_FEAT_SUSPEND:
|
||
|
|
fhci->vroot_hub->port.wPortStatus |=
|
||
|
|
USB_PORT_STAT_SUSPEND;
|
||
|
|
fhci_stop_sof_timer(fhci);
|
||
|
|
break;
|
||
|
|
case USB_PORT_FEAT_RESET:
|
||
|
|
fhci->vroot_hub->port.wPortStatus |=
|
||
|
|
USB_PORT_STAT_RESET;
|
||
|
|
fhci_port_reset(fhci->usb_lld);
|
||
|
|
fhci->vroot_hub->port.wPortStatus |=
|
||
|
|
USB_PORT_STAT_ENABLE;
|
||
|
|
fhci->vroot_hub->port.wPortStatus &=
|
||
|
|
~USB_PORT_STAT_RESET;
|
||
|
|
break;
|
||
|
|
case USB_PORT_FEAT_POWER:
|
||
|
|
fhci->vroot_hub->port.wPortStatus |=
|
||
|
|
USB_PORT_STAT_POWER;
|
||
|
|
fhci_config_transceiver(fhci, FHCI_PORT_WAITING);
|
||
|
|
break;
|
||
|
|
default:
|
||
|
|
goto error;
|
||
|
|
}
|
||
|
|
break;
|
||
|
|
default:
|
||
|
|
error:
|
||
|
|
retval = -EPIPE;
|
||
|
|
}
|
||
|
|
|
||
|
|
fhci_dbg(fhci, "<- %s\n", __func__);
|
||
|
|
|
||
|
|
spin_unlock_irqrestore(&fhci->lock, flags);
|
||
|
|
|
||
|
|
return retval;
|
||
|
|
}
|