641 lines
16 KiB
C
641 lines
16 KiB
C
/**
|
|
* dwc3-omap.c - OMAP Specific Glue layer
|
|
*
|
|
* Copyright (C) 2010-2011 Texas Instruments Incorporated - http://www.ti.com
|
|
*
|
|
* Authors: Felipe Balbi <balbi@ti.com>,
|
|
* Sebastian Andrzej Siewior <bigeasy@linutronix.de>
|
|
*
|
|
* This program is free software: you can redistribute it and/or modify
|
|
* it under the terms of the GNU General Public License version 2 of
|
|
* the License as published by the Free Software Foundation.
|
|
*
|
|
* 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.
|
|
*/
|
|
|
|
#include <linux/module.h>
|
|
#include <linux/kernel.h>
|
|
#include <linux/slab.h>
|
|
#include <linux/irq.h>
|
|
#include <linux/interrupt.h>
|
|
#include <linux/platform_device.h>
|
|
#include <linux/platform_data/dwc3-omap.h>
|
|
#include <linux/pm_runtime.h>
|
|
#include <linux/dma-mapping.h>
|
|
#include <linux/ioport.h>
|
|
#include <linux/io.h>
|
|
#include <linux/of.h>
|
|
#include <linux/of_platform.h>
|
|
#include <linux/extcon.h>
|
|
#include <linux/regulator/consumer.h>
|
|
|
|
#include <linux/usb/otg.h>
|
|
|
|
/*
|
|
* All these registers belong to OMAP's Wrapper around the
|
|
* DesignWare USB3 Core.
|
|
*/
|
|
|
|
#define USBOTGSS_REVISION 0x0000
|
|
#define USBOTGSS_SYSCONFIG 0x0010
|
|
#define USBOTGSS_IRQ_EOI 0x0020
|
|
#define USBOTGSS_EOI_OFFSET 0x0008
|
|
#define USBOTGSS_IRQSTATUS_RAW_0 0x0024
|
|
#define USBOTGSS_IRQSTATUS_0 0x0028
|
|
#define USBOTGSS_IRQENABLE_SET_0 0x002c
|
|
#define USBOTGSS_IRQENABLE_CLR_0 0x0030
|
|
#define USBOTGSS_IRQ0_OFFSET 0x0004
|
|
#define USBOTGSS_IRQSTATUS_RAW_1 0x0030
|
|
#define USBOTGSS_IRQSTATUS_1 0x0034
|
|
#define USBOTGSS_IRQENABLE_SET_1 0x0038
|
|
#define USBOTGSS_IRQENABLE_CLR_1 0x003c
|
|
#define USBOTGSS_IRQSTATUS_RAW_2 0x0040
|
|
#define USBOTGSS_IRQSTATUS_2 0x0044
|
|
#define USBOTGSS_IRQENABLE_SET_2 0x0048
|
|
#define USBOTGSS_IRQENABLE_CLR_2 0x004c
|
|
#define USBOTGSS_IRQSTATUS_RAW_3 0x0050
|
|
#define USBOTGSS_IRQSTATUS_3 0x0054
|
|
#define USBOTGSS_IRQENABLE_SET_3 0x0058
|
|
#define USBOTGSS_IRQENABLE_CLR_3 0x005c
|
|
#define USBOTGSS_IRQSTATUS_EOI_MISC 0x0030
|
|
#define USBOTGSS_IRQSTATUS_RAW_MISC 0x0034
|
|
#define USBOTGSS_IRQSTATUS_MISC 0x0038
|
|
#define USBOTGSS_IRQENABLE_SET_MISC 0x003c
|
|
#define USBOTGSS_IRQENABLE_CLR_MISC 0x0040
|
|
#define USBOTGSS_IRQMISC_OFFSET 0x03fc
|
|
#define USBOTGSS_UTMI_OTG_STATUS 0x0080
|
|
#define USBOTGSS_UTMI_OTG_CTRL 0x0084
|
|
#define USBOTGSS_UTMI_OTG_OFFSET 0x0480
|
|
#define USBOTGSS_TXFIFO_DEPTH 0x0508
|
|
#define USBOTGSS_RXFIFO_DEPTH 0x050c
|
|
#define USBOTGSS_MMRAM_OFFSET 0x0100
|
|
#define USBOTGSS_FLADJ 0x0104
|
|
#define USBOTGSS_DEBUG_CFG 0x0108
|
|
#define USBOTGSS_DEBUG_DATA 0x010c
|
|
#define USBOTGSS_DEV_EBC_EN 0x0110
|
|
#define USBOTGSS_DEBUG_OFFSET 0x0600
|
|
|
|
/* SYSCONFIG REGISTER */
|
|
#define USBOTGSS_SYSCONFIG_DMADISABLE (1 << 16)
|
|
|
|
/* IRQ_EOI REGISTER */
|
|
#define USBOTGSS_IRQ_EOI_LINE_NUMBER (1 << 0)
|
|
|
|
/* IRQS0 BITS */
|
|
#define USBOTGSS_IRQO_COREIRQ_ST (1 << 0)
|
|
|
|
/* IRQMISC BITS */
|
|
#define USBOTGSS_IRQMISC_DMADISABLECLR (1 << 17)
|
|
#define USBOTGSS_IRQMISC_OEVT (1 << 16)
|
|
#define USBOTGSS_IRQMISC_DRVVBUS_RISE (1 << 13)
|
|
#define USBOTGSS_IRQMISC_CHRGVBUS_RISE (1 << 12)
|
|
#define USBOTGSS_IRQMISC_DISCHRGVBUS_RISE (1 << 11)
|
|
#define USBOTGSS_IRQMISC_IDPULLUP_RISE (1 << 8)
|
|
#define USBOTGSS_IRQMISC_DRVVBUS_FALL (1 << 5)
|
|
#define USBOTGSS_IRQMISC_CHRGVBUS_FALL (1 << 4)
|
|
#define USBOTGSS_IRQMISC_DISCHRGVBUS_FALL (1 << 3)
|
|
#define USBOTGSS_IRQMISC_IDPULLUP_FALL (1 << 0)
|
|
|
|
/* UTMI_OTG_STATUS REGISTER */
|
|
#define USBOTGSS_UTMI_OTG_STATUS_DRVVBUS (1 << 5)
|
|
#define USBOTGSS_UTMI_OTG_STATUS_CHRGVBUS (1 << 4)
|
|
#define USBOTGSS_UTMI_OTG_STATUS_DISCHRGVBUS (1 << 3)
|
|
#define USBOTGSS_UTMI_OTG_STATUS_IDPULLUP (1 << 0)
|
|
|
|
/* UTMI_OTG_CTRL REGISTER */
|
|
#define USBOTGSS_UTMI_OTG_CTRL_SW_MODE (1 << 31)
|
|
#define USBOTGSS_UTMI_OTG_CTRL_POWERPRESENT (1 << 9)
|
|
#define USBOTGSS_UTMI_OTG_CTRL_TXBITSTUFFENABLE (1 << 8)
|
|
#define USBOTGSS_UTMI_OTG_CTRL_IDDIG (1 << 4)
|
|
#define USBOTGSS_UTMI_OTG_CTRL_SESSEND (1 << 3)
|
|
#define USBOTGSS_UTMI_OTG_CTRL_SESSVALID (1 << 2)
|
|
#define USBOTGSS_UTMI_OTG_CTRL_VBUSVALID (1 << 1)
|
|
|
|
struct dwc3_omap {
|
|
struct device *dev;
|
|
|
|
int irq;
|
|
void __iomem *base;
|
|
|
|
u32 utmi_otg_ctrl;
|
|
u32 utmi_otg_offset;
|
|
u32 irqmisc_offset;
|
|
u32 irq_eoi_offset;
|
|
u32 debug_offset;
|
|
u32 irq0_offset;
|
|
|
|
struct extcon_dev *edev;
|
|
struct notifier_block vbus_nb;
|
|
struct notifier_block id_nb;
|
|
|
|
struct regulator *vbus_reg;
|
|
};
|
|
|
|
enum omap_dwc3_vbus_id_status {
|
|
OMAP_DWC3_ID_FLOAT,
|
|
OMAP_DWC3_ID_GROUND,
|
|
OMAP_DWC3_VBUS_OFF,
|
|
OMAP_DWC3_VBUS_VALID,
|
|
};
|
|
|
|
static inline u32 dwc3_omap_readl(void __iomem *base, u32 offset)
|
|
{
|
|
return readl(base + offset);
|
|
}
|
|
|
|
static inline void dwc3_omap_writel(void __iomem *base, u32 offset, u32 value)
|
|
{
|
|
writel(value, base + offset);
|
|
}
|
|
|
|
static u32 dwc3_omap_read_utmi_ctrl(struct dwc3_omap *omap)
|
|
{
|
|
return dwc3_omap_readl(omap->base, USBOTGSS_UTMI_OTG_CTRL +
|
|
omap->utmi_otg_offset);
|
|
}
|
|
|
|
static void dwc3_omap_write_utmi_ctrl(struct dwc3_omap *omap, u32 value)
|
|
{
|
|
dwc3_omap_writel(omap->base, USBOTGSS_UTMI_OTG_CTRL +
|
|
omap->utmi_otg_offset, value);
|
|
|
|
}
|
|
|
|
static u32 dwc3_omap_read_irq0_status(struct dwc3_omap *omap)
|
|
{
|
|
return dwc3_omap_readl(omap->base, USBOTGSS_IRQSTATUS_RAW_0 -
|
|
omap->irq0_offset);
|
|
}
|
|
|
|
static void dwc3_omap_write_irq0_status(struct dwc3_omap *omap, u32 value)
|
|
{
|
|
dwc3_omap_writel(omap->base, USBOTGSS_IRQSTATUS_0 -
|
|
omap->irq0_offset, value);
|
|
|
|
}
|
|
|
|
static u32 dwc3_omap_read_irqmisc_status(struct dwc3_omap *omap)
|
|
{
|
|
return dwc3_omap_readl(omap->base, USBOTGSS_IRQSTATUS_RAW_MISC +
|
|
omap->irqmisc_offset);
|
|
}
|
|
|
|
static void dwc3_omap_write_irqmisc_status(struct dwc3_omap *omap, u32 value)
|
|
{
|
|
dwc3_omap_writel(omap->base, USBOTGSS_IRQSTATUS_MISC +
|
|
omap->irqmisc_offset, value);
|
|
|
|
}
|
|
|
|
static void dwc3_omap_write_irqmisc_set(struct dwc3_omap *omap, u32 value)
|
|
{
|
|
dwc3_omap_writel(omap->base, USBOTGSS_IRQENABLE_SET_MISC +
|
|
omap->irqmisc_offset, value);
|
|
|
|
}
|
|
|
|
static void dwc3_omap_write_irq0_set(struct dwc3_omap *omap, u32 value)
|
|
{
|
|
dwc3_omap_writel(omap->base, USBOTGSS_IRQENABLE_SET_0 -
|
|
omap->irq0_offset, value);
|
|
}
|
|
|
|
static void dwc3_omap_write_irqmisc_clr(struct dwc3_omap *omap, u32 value)
|
|
{
|
|
dwc3_omap_writel(omap->base, USBOTGSS_IRQENABLE_CLR_MISC +
|
|
omap->irqmisc_offset, value);
|
|
}
|
|
|
|
static void dwc3_omap_write_irq0_clr(struct dwc3_omap *omap, u32 value)
|
|
{
|
|
dwc3_omap_writel(omap->base, USBOTGSS_IRQENABLE_CLR_0 -
|
|
omap->irq0_offset, value);
|
|
}
|
|
|
|
static void dwc3_omap_set_mailbox(struct dwc3_omap *omap,
|
|
enum omap_dwc3_vbus_id_status status)
|
|
{
|
|
int ret;
|
|
u32 val;
|
|
|
|
switch (status) {
|
|
case OMAP_DWC3_ID_GROUND:
|
|
if (omap->vbus_reg) {
|
|
ret = regulator_enable(omap->vbus_reg);
|
|
if (ret) {
|
|
dev_err(omap->dev, "regulator enable failed\n");
|
|
return;
|
|
}
|
|
}
|
|
|
|
val = dwc3_omap_read_utmi_ctrl(omap);
|
|
val &= ~USBOTGSS_UTMI_OTG_CTRL_IDDIG;
|
|
dwc3_omap_write_utmi_ctrl(omap, val);
|
|
break;
|
|
|
|
case OMAP_DWC3_VBUS_VALID:
|
|
val = dwc3_omap_read_utmi_ctrl(omap);
|
|
val &= ~USBOTGSS_UTMI_OTG_CTRL_SESSEND;
|
|
val |= USBOTGSS_UTMI_OTG_CTRL_VBUSVALID
|
|
| USBOTGSS_UTMI_OTG_CTRL_SESSVALID;
|
|
dwc3_omap_write_utmi_ctrl(omap, val);
|
|
break;
|
|
|
|
case OMAP_DWC3_ID_FLOAT:
|
|
if (omap->vbus_reg)
|
|
regulator_disable(omap->vbus_reg);
|
|
val = dwc3_omap_read_utmi_ctrl(omap);
|
|
val |= USBOTGSS_UTMI_OTG_CTRL_IDDIG;
|
|
dwc3_omap_write_utmi_ctrl(omap, val);
|
|
break;
|
|
|
|
case OMAP_DWC3_VBUS_OFF:
|
|
val = dwc3_omap_read_utmi_ctrl(omap);
|
|
val &= ~(USBOTGSS_UTMI_OTG_CTRL_SESSVALID
|
|
| USBOTGSS_UTMI_OTG_CTRL_VBUSVALID);
|
|
val |= USBOTGSS_UTMI_OTG_CTRL_SESSEND;
|
|
dwc3_omap_write_utmi_ctrl(omap, val);
|
|
break;
|
|
|
|
default:
|
|
dev_WARN(omap->dev, "invalid state\n");
|
|
}
|
|
}
|
|
|
|
static void dwc3_omap_enable_irqs(struct dwc3_omap *omap);
|
|
static void dwc3_omap_disable_irqs(struct dwc3_omap *omap);
|
|
|
|
static irqreturn_t dwc3_omap_interrupt(int irq, void *_omap)
|
|
{
|
|
struct dwc3_omap *omap = _omap;
|
|
|
|
if (dwc3_omap_read_irqmisc_status(omap) ||
|
|
dwc3_omap_read_irq0_status(omap)) {
|
|
/* mask irqs */
|
|
dwc3_omap_disable_irqs(omap);
|
|
return IRQ_WAKE_THREAD;
|
|
}
|
|
|
|
return IRQ_NONE;
|
|
}
|
|
|
|
static irqreturn_t dwc3_omap_interrupt_thread(int irq, void *_omap)
|
|
{
|
|
struct dwc3_omap *omap = _omap;
|
|
u32 reg;
|
|
|
|
/* clear irq status flags */
|
|
reg = dwc3_omap_read_irqmisc_status(omap);
|
|
dwc3_omap_write_irqmisc_status(omap, reg);
|
|
|
|
reg = dwc3_omap_read_irq0_status(omap);
|
|
dwc3_omap_write_irq0_status(omap, reg);
|
|
|
|
/* unmask irqs */
|
|
dwc3_omap_enable_irqs(omap);
|
|
|
|
return IRQ_HANDLED;
|
|
}
|
|
|
|
static void dwc3_omap_enable_irqs(struct dwc3_omap *omap)
|
|
{
|
|
u32 reg;
|
|
|
|
/* enable all IRQs */
|
|
reg = USBOTGSS_IRQO_COREIRQ_ST;
|
|
dwc3_omap_write_irq0_set(omap, reg);
|
|
|
|
reg = (USBOTGSS_IRQMISC_OEVT |
|
|
USBOTGSS_IRQMISC_DRVVBUS_RISE |
|
|
USBOTGSS_IRQMISC_CHRGVBUS_RISE |
|
|
USBOTGSS_IRQMISC_DISCHRGVBUS_RISE |
|
|
USBOTGSS_IRQMISC_IDPULLUP_RISE |
|
|
USBOTGSS_IRQMISC_DRVVBUS_FALL |
|
|
USBOTGSS_IRQMISC_CHRGVBUS_FALL |
|
|
USBOTGSS_IRQMISC_DISCHRGVBUS_FALL |
|
|
USBOTGSS_IRQMISC_IDPULLUP_FALL);
|
|
|
|
dwc3_omap_write_irqmisc_set(omap, reg);
|
|
}
|
|
|
|
static void dwc3_omap_disable_irqs(struct dwc3_omap *omap)
|
|
{
|
|
u32 reg;
|
|
|
|
/* disable all IRQs */
|
|
reg = USBOTGSS_IRQO_COREIRQ_ST;
|
|
dwc3_omap_write_irq0_clr(omap, reg);
|
|
|
|
reg = (USBOTGSS_IRQMISC_OEVT |
|
|
USBOTGSS_IRQMISC_DRVVBUS_RISE |
|
|
USBOTGSS_IRQMISC_CHRGVBUS_RISE |
|
|
USBOTGSS_IRQMISC_DISCHRGVBUS_RISE |
|
|
USBOTGSS_IRQMISC_IDPULLUP_RISE |
|
|
USBOTGSS_IRQMISC_DRVVBUS_FALL |
|
|
USBOTGSS_IRQMISC_CHRGVBUS_FALL |
|
|
USBOTGSS_IRQMISC_DISCHRGVBUS_FALL |
|
|
USBOTGSS_IRQMISC_IDPULLUP_FALL);
|
|
|
|
dwc3_omap_write_irqmisc_clr(omap, reg);
|
|
}
|
|
|
|
static int dwc3_omap_id_notifier(struct notifier_block *nb,
|
|
unsigned long event, void *ptr)
|
|
{
|
|
struct dwc3_omap *omap = container_of(nb, struct dwc3_omap, id_nb);
|
|
|
|
if (event)
|
|
dwc3_omap_set_mailbox(omap, OMAP_DWC3_ID_GROUND);
|
|
else
|
|
dwc3_omap_set_mailbox(omap, OMAP_DWC3_ID_FLOAT);
|
|
|
|
return NOTIFY_DONE;
|
|
}
|
|
|
|
static int dwc3_omap_vbus_notifier(struct notifier_block *nb,
|
|
unsigned long event, void *ptr)
|
|
{
|
|
struct dwc3_omap *omap = container_of(nb, struct dwc3_omap, vbus_nb);
|
|
|
|
if (event)
|
|
dwc3_omap_set_mailbox(omap, OMAP_DWC3_VBUS_VALID);
|
|
else
|
|
dwc3_omap_set_mailbox(omap, OMAP_DWC3_VBUS_OFF);
|
|
|
|
return NOTIFY_DONE;
|
|
}
|
|
|
|
static void dwc3_omap_map_offset(struct dwc3_omap *omap)
|
|
{
|
|
struct device_node *node = omap->dev->of_node;
|
|
|
|
/*
|
|
* Differentiate between OMAP5 and AM437x.
|
|
*
|
|
* For OMAP5(ES2.0) and AM437x wrapper revision is same, even
|
|
* though there are changes in wrapper register offsets.
|
|
*
|
|
* Using dt compatible to differentiate AM437x.
|
|
*/
|
|
if (of_device_is_compatible(node, "ti,am437x-dwc3")) {
|
|
omap->irq_eoi_offset = USBOTGSS_EOI_OFFSET;
|
|
omap->irq0_offset = USBOTGSS_IRQ0_OFFSET;
|
|
omap->irqmisc_offset = USBOTGSS_IRQMISC_OFFSET;
|
|
omap->utmi_otg_offset = USBOTGSS_UTMI_OTG_OFFSET;
|
|
omap->debug_offset = USBOTGSS_DEBUG_OFFSET;
|
|
}
|
|
}
|
|
|
|
static void dwc3_omap_set_utmi_mode(struct dwc3_omap *omap)
|
|
{
|
|
u32 reg;
|
|
struct device_node *node = omap->dev->of_node;
|
|
int utmi_mode = 0;
|
|
|
|
reg = dwc3_omap_read_utmi_ctrl(omap);
|
|
|
|
of_property_read_u32(node, "utmi-mode", &utmi_mode);
|
|
|
|
switch (utmi_mode) {
|
|
case DWC3_OMAP_UTMI_MODE_SW:
|
|
reg |= USBOTGSS_UTMI_OTG_CTRL_SW_MODE;
|
|
break;
|
|
case DWC3_OMAP_UTMI_MODE_HW:
|
|
reg &= ~USBOTGSS_UTMI_OTG_CTRL_SW_MODE;
|
|
break;
|
|
default:
|
|
dev_WARN(omap->dev, "UNKNOWN utmi mode %d\n", utmi_mode);
|
|
}
|
|
|
|
dwc3_omap_write_utmi_ctrl(omap, reg);
|
|
}
|
|
|
|
static int dwc3_omap_extcon_register(struct dwc3_omap *omap)
|
|
{
|
|
int ret;
|
|
struct device_node *node = omap->dev->of_node;
|
|
struct extcon_dev *edev;
|
|
|
|
if (of_property_read_bool(node, "extcon")) {
|
|
edev = extcon_get_edev_by_phandle(omap->dev, 0);
|
|
if (IS_ERR(edev)) {
|
|
dev_vdbg(omap->dev, "couldn't get extcon device\n");
|
|
return -EPROBE_DEFER;
|
|
}
|
|
|
|
omap->vbus_nb.notifier_call = dwc3_omap_vbus_notifier;
|
|
ret = extcon_register_notifier(edev, EXTCON_USB,
|
|
&omap->vbus_nb);
|
|
if (ret < 0)
|
|
dev_vdbg(omap->dev, "failed to register notifier for USB\n");
|
|
|
|
omap->id_nb.notifier_call = dwc3_omap_id_notifier;
|
|
ret = extcon_register_notifier(edev, EXTCON_USB_HOST,
|
|
&omap->id_nb);
|
|
if (ret < 0)
|
|
dev_vdbg(omap->dev, "failed to register notifier for USB-HOST\n");
|
|
|
|
if (extcon_get_cable_state_(edev, EXTCON_USB) == true)
|
|
dwc3_omap_set_mailbox(omap, OMAP_DWC3_VBUS_VALID);
|
|
if (extcon_get_cable_state_(edev, EXTCON_USB_HOST) == true)
|
|
dwc3_omap_set_mailbox(omap, OMAP_DWC3_ID_GROUND);
|
|
|
|
omap->edev = edev;
|
|
}
|
|
|
|
return 0;
|
|
}
|
|
|
|
static int dwc3_omap_probe(struct platform_device *pdev)
|
|
{
|
|
struct device_node *node = pdev->dev.of_node;
|
|
|
|
struct dwc3_omap *omap;
|
|
struct resource *res;
|
|
struct device *dev = &pdev->dev;
|
|
struct regulator *vbus_reg = NULL;
|
|
|
|
int ret;
|
|
int irq;
|
|
|
|
u32 reg;
|
|
|
|
void __iomem *base;
|
|
|
|
if (!node) {
|
|
dev_err(dev, "device node not found\n");
|
|
return -EINVAL;
|
|
}
|
|
|
|
omap = devm_kzalloc(dev, sizeof(*omap), GFP_KERNEL);
|
|
if (!omap)
|
|
return -ENOMEM;
|
|
|
|
platform_set_drvdata(pdev, omap);
|
|
|
|
irq = platform_get_irq(pdev, 0);
|
|
if (irq < 0) {
|
|
dev_err(dev, "missing IRQ resource\n");
|
|
return -EINVAL;
|
|
}
|
|
|
|
res = platform_get_resource(pdev, IORESOURCE_MEM, 0);
|
|
base = devm_ioremap_resource(dev, res);
|
|
if (IS_ERR(base))
|
|
return PTR_ERR(base);
|
|
|
|
if (of_property_read_bool(node, "vbus-supply")) {
|
|
vbus_reg = devm_regulator_get(dev, "vbus");
|
|
if (IS_ERR(vbus_reg)) {
|
|
dev_err(dev, "vbus init failed\n");
|
|
return PTR_ERR(vbus_reg);
|
|
}
|
|
}
|
|
|
|
omap->dev = dev;
|
|
omap->irq = irq;
|
|
omap->base = base;
|
|
omap->vbus_reg = vbus_reg;
|
|
|
|
pm_runtime_enable(dev);
|
|
ret = pm_runtime_get_sync(dev);
|
|
if (ret < 0) {
|
|
dev_err(dev, "get_sync failed with err %d\n", ret);
|
|
goto err1;
|
|
}
|
|
|
|
dwc3_omap_map_offset(omap);
|
|
dwc3_omap_set_utmi_mode(omap);
|
|
|
|
/* check the DMA Status */
|
|
reg = dwc3_omap_readl(omap->base, USBOTGSS_SYSCONFIG);
|
|
|
|
ret = dwc3_omap_extcon_register(omap);
|
|
if (ret < 0)
|
|
goto err1;
|
|
|
|
ret = of_platform_populate(node, NULL, NULL, dev);
|
|
if (ret) {
|
|
dev_err(&pdev->dev, "failed to create dwc3 core\n");
|
|
goto err2;
|
|
}
|
|
|
|
ret = devm_request_threaded_irq(dev, omap->irq, dwc3_omap_interrupt,
|
|
dwc3_omap_interrupt_thread, IRQF_SHARED,
|
|
"dwc3-omap", omap);
|
|
if (ret) {
|
|
dev_err(dev, "failed to request IRQ #%d --> %d\n",
|
|
omap->irq, ret);
|
|
goto err1;
|
|
}
|
|
dwc3_omap_enable_irqs(omap);
|
|
return 0;
|
|
|
|
err2:
|
|
extcon_unregister_notifier(omap->edev, EXTCON_USB, &omap->vbus_nb);
|
|
extcon_unregister_notifier(omap->edev, EXTCON_USB_HOST, &omap->id_nb);
|
|
|
|
err1:
|
|
pm_runtime_put_sync(dev);
|
|
pm_runtime_disable(dev);
|
|
|
|
return ret;
|
|
}
|
|
|
|
static int dwc3_omap_remove(struct platform_device *pdev)
|
|
{
|
|
struct dwc3_omap *omap = platform_get_drvdata(pdev);
|
|
|
|
extcon_unregister_notifier(omap->edev, EXTCON_USB, &omap->vbus_nb);
|
|
extcon_unregister_notifier(omap->edev, EXTCON_USB_HOST, &omap->id_nb);
|
|
dwc3_omap_disable_irqs(omap);
|
|
disable_irq(omap->irq);
|
|
of_platform_depopulate(omap->dev);
|
|
pm_runtime_put_sync(&pdev->dev);
|
|
pm_runtime_disable(&pdev->dev);
|
|
|
|
return 0;
|
|
}
|
|
|
|
static const struct of_device_id of_dwc3_match[] = {
|
|
{
|
|
.compatible = "ti,dwc3"
|
|
},
|
|
{
|
|
.compatible = "ti,am437x-dwc3"
|
|
},
|
|
{ },
|
|
};
|
|
MODULE_DEVICE_TABLE(of, of_dwc3_match);
|
|
|
|
#ifdef CONFIG_PM_SLEEP
|
|
static int dwc3_omap_suspend(struct device *dev)
|
|
{
|
|
struct dwc3_omap *omap = dev_get_drvdata(dev);
|
|
|
|
omap->utmi_otg_ctrl = dwc3_omap_read_utmi_ctrl(omap);
|
|
dwc3_omap_disable_irqs(omap);
|
|
|
|
return 0;
|
|
}
|
|
|
|
static int dwc3_omap_resume(struct device *dev)
|
|
{
|
|
struct dwc3_omap *omap = dev_get_drvdata(dev);
|
|
|
|
dwc3_omap_write_utmi_ctrl(omap, omap->utmi_otg_ctrl);
|
|
dwc3_omap_enable_irqs(omap);
|
|
|
|
pm_runtime_disable(dev);
|
|
pm_runtime_set_active(dev);
|
|
pm_runtime_enable(dev);
|
|
|
|
return 0;
|
|
}
|
|
|
|
static void dwc3_omap_complete(struct device *dev)
|
|
{
|
|
struct dwc3_omap *omap = dev_get_drvdata(dev);
|
|
|
|
if (extcon_get_state(omap->edev, EXTCON_USB))
|
|
dwc3_omap_set_mailbox(omap, OMAP_DWC3_VBUS_VALID);
|
|
else
|
|
dwc3_omap_set_mailbox(omap, OMAP_DWC3_VBUS_OFF);
|
|
|
|
if (extcon_get_state(omap->edev, EXTCON_USB_HOST))
|
|
dwc3_omap_set_mailbox(omap, OMAP_DWC3_ID_GROUND);
|
|
else
|
|
dwc3_omap_set_mailbox(omap, OMAP_DWC3_ID_FLOAT);
|
|
}
|
|
|
|
static const struct dev_pm_ops dwc3_omap_dev_pm_ops = {
|
|
|
|
SET_SYSTEM_SLEEP_PM_OPS(dwc3_omap_suspend, dwc3_omap_resume)
|
|
.complete = dwc3_omap_complete,
|
|
};
|
|
|
|
#define DEV_PM_OPS (&dwc3_omap_dev_pm_ops)
|
|
#else
|
|
#define DEV_PM_OPS NULL
|
|
#endif /* CONFIG_PM_SLEEP */
|
|
|
|
static struct platform_driver dwc3_omap_driver = {
|
|
.probe = dwc3_omap_probe,
|
|
.remove = dwc3_omap_remove,
|
|
.driver = {
|
|
.name = "omap-dwc3",
|
|
.of_match_table = of_dwc3_match,
|
|
.pm = DEV_PM_OPS,
|
|
},
|
|
};
|
|
|
|
module_platform_driver(dwc3_omap_driver);
|
|
|
|
MODULE_ALIAS("platform:omap-dwc3");
|
|
MODULE_AUTHOR("Felipe Balbi <balbi@ti.com>");
|
|
MODULE_LICENSE("GPL v2");
|
|
MODULE_DESCRIPTION("DesignWare USB3 OMAP Glue Layer");
|