openwrt/target/linux/gemini/patches-4.4/130-usb-ehci-add-fot2g-driver.patch

--- a/drivers/usb/host/ehci-hcd.c
+++ b/drivers/usb/host/ehci-hcd.c
@@ -352,11 +352,13 @@ static void ehci_silence_controller(stru
 	ehci->rh_state = EHCI_RH_HALTED;
 	ehci_turn_off_all_ports(ehci);
 
+#ifndef CONFIG_ARCH_GEMINI
 	/* make BIOS/etc use companion controller during reboot */
 	ehci_writel(ehci, 0, &ehci->regs->configured_flag);
 
 	/* unblock posted writes */
 	ehci_readl(ehci, &ehci->regs->configured_flag);
+#endif
 	spin_unlock_irq(&ehci->lock);
 }
 
@@ -608,7 +610,9 @@ static int ehci_run (struct usb_hcd *hcd
 	// Philips, Intel, and maybe others need CMD_RUN before the
 	// root hub will detect new devices (why?); NEC doesn't
 	ehci->command &= ~(CMD_LRESET|CMD_IAAD|CMD_PSE|CMD_ASE|CMD_RESET);
+#ifndef CONFIG_ARCH_GEMINI
 	ehci->command |= CMD_RUN;
+#endif
 	ehci_writel(ehci, ehci->command, &ehci->regs->command);
 	dbg_cmd (ehci, "init", ehci->command);
 
@@ -628,9 +632,11 @@ static int ehci_run (struct usb_hcd *hcd
 	 */
 	down_write(&ehci_cf_port_reset_rwsem);
 	ehci->rh_state = EHCI_RH_RUNNING;
+#ifndef CONFIG_ARCH_GEMINI
 	ehci_writel(ehci, FLAG_CF, &ehci->regs->configured_flag);
 	ehci_readl(ehci, &ehci->regs->command);	/* unblock posted writes */
 	msleep(5);
+#endif
 	up_write(&ehci_cf_port_reset_rwsem);
 	ehci->last_periodic_enable = ktime_get_real();
 
@@ -768,9 +774,10 @@ static irqreturn_t ehci_irq (struct usb_
 		pcd_status = status;
 
 		/* resume root hub? */
+#ifndef CONFIG_ARCH_GEMINI
 		if (ehci->rh_state == EHCI_RH_SUSPENDED)
 			usb_hcd_resume_root_hub(hcd);
-
+#endif
 		/* get per-port change detect bits */
 		if (ehci->has_ppcd)
 			ppcd = status >> 16;
@@ -1296,6 +1303,11 @@ MODULE_LICENSE ("GPL");
 #define	PLATFORM_DRIVER		ehci_hcd_sead3_driver
 #endif
 
+#ifdef CONFIG_ARCH_GEMINI
+#include "ehci-fotg2.c"
+#define PLATFORM_DRIVER		ehci_fotg2_driver
+#endif
+
 static int __init ehci_hcd_init(void)
 {
 	int retval = 0;
--- a/drivers/usb/host/ehci-timer.c
+++ b/drivers/usb/host/ehci-timer.c
@@ -208,7 +208,9 @@ static void ehci_handle_controller_death
 
 	/* Clean up the mess */
 	ehci->rh_state = EHCI_RH_HALTED;
+#ifndef CONFIG_ARCH_GEMINI
 	ehci_writel(ehci, 0, &ehci->regs->configured_flag);
+#endif
 	ehci_writel(ehci, 0, &ehci->regs->intr_enable);
 	ehci_work(ehci);
 	end_unlink_async(ehci);
--- a/drivers/usb/host/ehci.h
+++ b/drivers/usb/host/ehci.h
@@ -657,7 +657,12 @@ static inline unsigned int
 ehci_port_speed(struct ehci_hcd *ehci, unsigned int portsc)
 {
 	if (ehci_is_TDI(ehci)) {
-		switch ((portsc >> (ehci->has_hostpc ? 25 : 26)) & 3) {
+#ifdef CONFIG_ARCH_GEMINI
+		portsc = readl(ehci_to_hcd(ehci)->regs + 0x80);
+		switch ((portsc>>22)&3) {
+#else
+		switch ((portsc>>26)&3) {
+#endif
 		case 0:
 			return 0;
 		case 1:
--- a/drivers/usb/host/ehci-hub.c
+++ b/drivers/usb/host/ehci-hub.c
@@ -1076,6 +1076,11 @@ int ehci_hub_control(
 			/* see what we found out */
 			temp = check_reset_complete (ehci, wIndex, status_reg,
 					ehci_readl(ehci, status_reg));
+#ifdef CONFIG_ARCH_GEMINI
+			/* restart schedule */
+		 	ehci->command |= CMD_RUN;
+			ehci_writel(ehci, ehci->command, &ehci->regs->command);
+#endif
 		}
 
 		/* transfer dedicated ports to the companion hc */
--- a/include/linux/usb/ehci_def.h
+++ b/include/linux/usb/ehci_def.h
@@ -112,8 +112,13 @@ struct ehci_regs {
 	u32		frame_list;	/* points to periodic list */
 	/* ASYNCLISTADDR: offset 0x18 */
 	u32		async_next;	/* address of next async queue head */
-
+#ifndef CONFIG_ARCH_GEMINI
 	u32		reserved1[2];
+#else
+	u32		reserved1;
+	/* PORTSC: offset 0x20 for Faraday OTG */
+	u32		port_status[1];
+#endif
 
 	/* TXFILLTUNING: offset 0x24 */
 	u32		txfill_tuning;	/* TX FIFO Tuning register */
@@ -125,8 +130,11 @@ struct ehci_regs {
 	u32		configured_flag;
 #define FLAG_CF		(1<<0)		/* true: we'll support "high speed" */
 
+#ifndef CONFIG_ARCH_GEMINI
 	/* PORTSC: offset 0x44 */
 	u32		port_status[0];	/* up to N_PORTS */
+#endif
+
 /* EHCI 1.1 addendum */
 #define PORTSC_SUSPEND_STS_ACK 0
 #define PORTSC_SUSPEND_STS_NYET 1