From c7e3b2b58636704d504ac270031d87b716d8b273 Mon Sep 17 00:00:00 2001
From: Lucas Stach <dev@lynxeye.de>
Date: Wed, 26 Sep 2012 00:14:34 +0200
Subject: [PATCH] usb: lowlevel interface change to support multiple
 controllers

Carry an index in the lowlevel usb functions to make specify the
respective usb controller.

Also pass through an controller struct from lowlevel_init to the
creation of the root usb device of this controller.

Signed-off-by: Lucas Stach <dev@lynxeye.de>
Reviewed-by: Marek Vasut <marex@denx.de>
---
 arch/arm/cpu/arm920t/s3c24x0/usb_ohci.c       |  4 ++--
 arch/mips/cpu/mips32/au1x00/au1x00_usb_ohci.c |  4 ++--
 arch/powerpc/cpu/mpc5xxx/usb_ohci.c           |  4 ++--
 arch/powerpc/cpu/ppc4xx/usb_ohci.c            |  4 ++--
 arch/sparc/cpu/leon3/usb_uhci.c               |  4 ++--
 arch/sparc/lib/bootm.c                        |  2 +-
 board/mpl/common/usb_uhci.c                   |  4 ++--
 common/usb.c                                  | 10 ++++++----
 common/usb_hub.c                              |  2 +-
 drivers/usb/host/ehci-hcd.c                   |  4 ++--
 drivers/usb/host/isp116x-hcd.c                |  4 ++--
 drivers/usb/host/ohci-hcd.c                   |  4 ++--
 drivers/usb/host/r8a66597-hcd.c               |  4 ++--
 drivers/usb/host/sl811-hcd.c                  |  4 ++--
 drivers/usb/musb/musb_hcd.c                   |  4 ++--
 include/usb.h                                 | 10 +++++++---
 include/usb/mv_udc.h                          |  2 +-
 17 files changed, 40 insertions(+), 34 deletions(-)

diff --git a/arch/arm/cpu/arm920t/s3c24x0/usb_ohci.c b/arch/arm/cpu/arm920t/s3c24x0/usb_ohci.c
index cf0335c732..944bb32f57 100644
--- a/arch/arm/cpu/arm920t/s3c24x0/usb_ohci.c
+++ b/arch/arm/cpu/arm920t/s3c24x0/usb_ohci.c
@@ -1659,7 +1659,7 @@ static void hc_release_ohci(struct ohci *ohci)
  */
 static char ohci_inited = 0;
 
-int usb_lowlevel_init(void)
+int usb_lowlevel_init(int index, void **controller)
 {
 	struct s3c24x0_clock_power *clk_power = s3c24x0_get_base_clock_power();
 	struct s3c24x0_gpio *gpio = s3c24x0_get_base_gpio();
@@ -1738,7 +1738,7 @@ int usb_lowlevel_init(void)
 	return 0;
 }
 
-int usb_lowlevel_stop(void)
+int usb_lowlevel_stop(int index)
 {
 	struct s3c24x0_clock_power *clk_power = s3c24x0_get_base_clock_power();
 
diff --git a/arch/mips/cpu/mips32/au1x00/au1x00_usb_ohci.c b/arch/mips/cpu/mips32/au1x00/au1x00_usb_ohci.c
index 7647e11841..c747767e1e 100644
--- a/arch/mips/cpu/mips32/au1x00/au1x00_usb_ohci.c
+++ b/arch/mips/cpu/mips32/au1x00/au1x00_usb_ohci.c
@@ -1565,7 +1565,7 @@ static void hc_release_ohci (ohci_t *ohci)
  */
 static char ohci_inited = 0;
 
-int usb_lowlevel_init(void)
+int usb_lowlevel_init(int index, void **controller)
 {
 	u32 pin_func;
 	u32 sys_freqctrl, sys_clksrc;
@@ -1707,7 +1707,7 @@ int usb_lowlevel_init(void)
 	return -1;
 }
 
-int usb_lowlevel_stop(void)
+int usb_lowlevel_stop(int index)
 {
 	/* this gets called really early - before the controller has */
 	/* even been initialized! */
diff --git a/arch/powerpc/cpu/mpc5xxx/usb_ohci.c b/arch/powerpc/cpu/mpc5xxx/usb_ohci.c
index 6d915256a3..607034b7c6 100644
--- a/arch/powerpc/cpu/mpc5xxx/usb_ohci.c
+++ b/arch/powerpc/cpu/mpc5xxx/usb_ohci.c
@@ -1561,7 +1561,7 @@ static void hc_release_ohci (ohci_t *ohci)
  */
 static char ohci_inited = 0;
 
-int usb_lowlevel_init(void)
+int usb_lowlevel_init(int index, void **controller)
 {
 
 	/* Set the USB Clock						     */
@@ -1629,7 +1629,7 @@ int usb_lowlevel_init(void)
 	return 0;
 }
 
-int usb_lowlevel_stop(void)
+int usb_lowlevel_stop(int index)
 {
 	/* this gets called really early - before the controller has */
 	/* even been initialized! */
diff --git a/arch/powerpc/cpu/ppc4xx/usb_ohci.c b/arch/powerpc/cpu/ppc4xx/usb_ohci.c
index 14c6a280a6..4ce2726297 100644
--- a/arch/powerpc/cpu/ppc4xx/usb_ohci.c
+++ b/arch/powerpc/cpu/ppc4xx/usb_ohci.c
@@ -1566,7 +1566,7 @@ static void hc_release_ohci (ohci_t *ohci)
  */
 static char ohci_inited = 0;
 
-int usb_lowlevel_init(void)
+int usb_lowlevel_init(int index, void **controller)
 {
 	memset (&gohci, 0, sizeof (ohci_t));
 	memset (&urb_priv, 0, sizeof (urb_priv_t));
@@ -1624,7 +1624,7 @@ int usb_lowlevel_init(void)
 	return 0;
 }
 
-int usb_lowlevel_stop(void)
+int usb_lowlevel_stop(int index)
 {
 	/* this gets called really early - before the controller has */
 	/* even been initialized! */
diff --git a/arch/sparc/cpu/leon3/usb_uhci.c b/arch/sparc/cpu/leon3/usb_uhci.c
index 62cc25dc92..b3b8a4d0bb 100644
--- a/arch/sparc/cpu/leon3/usb_uhci.c
+++ b/arch/sparc/cpu/leon3/usb_uhci.c
@@ -706,7 +706,7 @@ void handle_usb_interrupt(void)
 
 /* init uhci
  */
-int usb_lowlevel_init(void)
+int usb_lowlevel_init(int index, void **controller)
 {
 	unsigned char temp;
 	ambapp_ahbdev ahbdev;
@@ -745,7 +745,7 @@ int usb_lowlevel_init(void)
 
 /* stop uhci
  */
-int usb_lowlevel_stop(void)
+int usb_lowlevel_stop(int index)
 {
 	if (grusb_irq == -1)
 		return 1;
diff --git a/arch/sparc/lib/bootm.c b/arch/sparc/lib/bootm.c
index e5b933d1d6..bcc63584bf 100644
--- a/arch/sparc/lib/bootm.c
+++ b/arch/sparc/lib/bootm.c
@@ -36,7 +36,7 @@ extern void srmmu_init_cpu(unsigned int entry);
 extern void prepare_bootargs(char *bootargs);
 
 #ifdef CONFIG_USB_UHCI
-extern int usb_lowlevel_stop(void);
+extern int usb_lowlevel_stop(int index);
 #endif
 
 /* sparc kernel argument (the ROM vector) */
diff --git a/board/mpl/common/usb_uhci.c b/board/mpl/common/usb_uhci.c
index ddca587369..254f263cab 100644
--- a/board/mpl/common/usb_uhci.c
+++ b/board/mpl/common/usb_uhci.c
@@ -602,7 +602,7 @@ void handle_usb_interrupt(void)
 
 /* init uhci
  */
-int usb_lowlevel_init(void)
+int usb_lowlevel_init(int index, void **controller)
 {
 	unsigned char temp;
 	int	busdevfunc;
@@ -632,7 +632,7 @@ int usb_lowlevel_init(void)
 
 /* stop uhci
  */
-int usb_lowlevel_stop(void)
+int usb_lowlevel_stop(int index)
 {
 	if(irqvec==-1)
 		return 1;
diff --git a/common/usb.c b/common/usb.c
index 1b40228b28..e58b6f498f 100644
--- a/common/usb.c
+++ b/common/usb.c
@@ -76,6 +76,7 @@ static int running;
 static int asynch_allowed;
 
 char usb_started; /* flag for the started/stopped USB status */
+void *ctrl; /* goes away in a following commit, but don't break bisect */
 
 /**********************************************************************
  * some forward declerations...
@@ -96,7 +97,7 @@ int usb_init(void)
 	usb_hub_reset();
 	/* init low_level USB */
 	printf("USB:   ");
-	result = usb_lowlevel_init();
+	result = usb_lowlevel_init(0, &ctrl);
 	/* if lowlevel init is OK, scan the bus for devices
 	 * i.e. search HUBs and configure them */
 	if (result == 0) {
@@ -123,7 +124,7 @@ int usb_stop(void)
 		asynch_allowed = 1;
 		usb_started = 0;
 		usb_hub_reset();
-		res = usb_lowlevel_stop();
+		res = usb_lowlevel_stop(0);
 	}
 	return res;
 }
@@ -754,7 +755,7 @@ struct usb_device *usb_get_dev_index(int index)
 /* returns a pointer of a new device structure or NULL, if
  * no device struct is available
  */
-struct usb_device *usb_alloc_new_device(void)
+struct usb_device *usb_alloc_new_device(void *controller)
 {
 	int i;
 	USB_PRINTF("New Device %d\n", dev_index);
@@ -768,6 +769,7 @@ struct usb_device *usb_alloc_new_device(void)
 	for (i = 0; i < USB_MAXCHILDREN; i++)
 		usb_dev[dev_index].children[i] = NULL;
 	usb_dev[dev_index].parent = NULL;
+	usb_dev[dev_index].controller = controller;
 	dev_index++;
 	return &usb_dev[dev_index - 1];
 }
@@ -958,7 +960,7 @@ static void usb_scan_devices(void)
 	}
 	dev_index = 0;
 	/* device 0 is always present (root hub, so let it analyze) */
-	dev = usb_alloc_new_device();
+	dev = usb_alloc_new_device(ctrl);
 	if (usb_new_device(dev))
 		printf("No USB Device found\n");
 	else
diff --git a/common/usb_hub.c b/common/usb_hub.c
index 32750e8d05..e4a120120d 100644
--- a/common/usb_hub.c
+++ b/common/usb_hub.c
@@ -244,7 +244,7 @@ void usb_hub_port_connect_change(struct usb_device *dev, int port)
 	mdelay(200);
 
 	/* Allocate a new device struct for it */
-	usb = usb_alloc_new_device();
+	usb = usb_alloc_new_device(dev->controller);
 
 	if (portstatus & USB_PORT_STAT_HIGH_SPEED)
 		usb->speed = USB_SPEED_HIGH;
diff --git a/drivers/usb/host/ehci-hcd.c b/drivers/usb/host/ehci-hcd.c
index 392e286224..5d8714e688 100644
--- a/drivers/usb/host/ehci-hcd.c
+++ b/drivers/usb/host/ehci-hcd.c
@@ -829,12 +829,12 @@ unknown:
 	return -1;
 }
 
-int usb_lowlevel_stop(void)
+int usb_lowlevel_stop(int index)
 {
 	return ehci_hcd_stop();
 }
 
-int usb_lowlevel_init(void)
+int usb_lowlevel_init(int index, void **controller)
 {
 	uint32_t reg;
 	uint32_t cmd;
diff --git a/drivers/usb/host/isp116x-hcd.c b/drivers/usb/host/isp116x-hcd.c
index 5ef34c30fd..19e16a4a80 100644
--- a/drivers/usb/host/isp116x-hcd.c
+++ b/drivers/usb/host/isp116x-hcd.c
@@ -1391,7 +1391,7 @@ int isp116x_check_id(struct isp116x *isp116x)
 	return 0;
 }
 
-int usb_lowlevel_init(void)
+int usb_lowlevel_init(int index, void **controller))
 {
 	struct isp116x *isp116x = &isp116x_dev;
 
@@ -1428,7 +1428,7 @@ int usb_lowlevel_init(void)
 	return 0;
 }
 
-int usb_lowlevel_stop(void)
+int usb_lowlevel_stop(int index)
 {
 	struct isp116x *isp116x = &isp116x_dev;
 
diff --git a/drivers/usb/host/ohci-hcd.c b/drivers/usb/host/ohci-hcd.c
index 9f4735167a..c2106adbd3 100644
--- a/drivers/usb/host/ohci-hcd.c
+++ b/drivers/usb/host/ohci-hcd.c
@@ -1865,7 +1865,7 @@ static void hc_release_ohci(ohci_t *ohci)
  */
 static char ohci_inited = 0;
 
-int usb_lowlevel_init(void)
+int usb_lowlevel_init(int index, void **controller)
 {
 #ifdef CONFIG_PCI_OHCI
 	pci_dev_t pdev;
@@ -1971,7 +1971,7 @@ int usb_lowlevel_init(void)
 	return 0;
 }
 
-int usb_lowlevel_stop(void)
+int usb_lowlevel_stop(int index)
 {
 	/* this gets called really early - before the controller has */
 	/* even been initialized! */
diff --git a/drivers/usb/host/r8a66597-hcd.c b/drivers/usb/host/r8a66597-hcd.c
index ab1b8d0d8b..2a4e7ff4b3 100644
--- a/drivers/usb/host/r8a66597-hcd.c
+++ b/drivers/usb/host/r8a66597-hcd.c
@@ -908,7 +908,7 @@ int submit_int_msg(struct usb_device *dev, unsigned long pipe, void *buffer,
 	return 0;
 }
 
-int usb_lowlevel_init(void)
+int usb_lowlevel_init(int index, void **controller))
 {
 	struct r8a66597 *r8a66597 = &gr8a66597;
 
@@ -931,7 +931,7 @@ int usb_lowlevel_init(void)
 	return 0;
 }
 
-int usb_lowlevel_stop(void)
+int usb_lowlevel_stop(int index)
 {
 	disable_controller(&gr8a66597);
 
diff --git a/drivers/usb/host/sl811-hcd.c b/drivers/usb/host/sl811-hcd.c
index bb27dd514a..2830616046 100644
--- a/drivers/usb/host/sl811-hcd.c
+++ b/drivers/usb/host/sl811-hcd.c
@@ -210,14 +210,14 @@ static int sl811_hc_reset(void)
 	return 1;
 }
 
-int usb_lowlevel_init(void)
+int usb_lowlevel_init(int index, void **controller)
 {
 	root_hub_devnum = 0;
 	sl811_hc_reset();
 	return 0;
 }
 
-int usb_lowlevel_stop(void)
+int usb_lowlevel_stop(int index)
 {
 	sl811_hc_reset();
 	return 0;
diff --git a/drivers/usb/musb/musb_hcd.c b/drivers/usb/musb/musb_hcd.c
index 8d44c4657f..06be38d1cf 100644
--- a/drivers/usb/musb/musb_hcd.c
+++ b/drivers/usb/musb/musb_hcd.c
@@ -1092,7 +1092,7 @@ int submit_bulk_msg(struct usb_device *dev, unsigned long pipe,
 /*
  * This function initializes the usb controller module.
  */
-int usb_lowlevel_init(void)
+int usb_lowlevel_init(int index, void **controller)
 {
 	u8  power;
 	u32 timeout;
@@ -1144,7 +1144,7 @@ int usb_lowlevel_init(void)
 /*
  * This function stops the operation of the davinci usb module.
  */
-int usb_lowlevel_stop(void)
+int usb_lowlevel_stop(int index)
 {
 	/* Reset the USB module */
 	musb_platform_deinit();
diff --git a/include/usb.h b/include/usb.h
index ba3d169ea8..292a0425d8 100644
--- a/include/usb.h
+++ b/include/usb.h
@@ -140,6 +140,8 @@ struct usb_device {
 	int portnr;
 	struct usb_device *parent;
 	struct usb_device *children[USB_MAXCHILDREN];
+
+	void *controller;		/* hardware controller private data */
 };
 
 /**********************************************************************
@@ -153,8 +155,9 @@ struct usb_device {
 	defined(CONFIG_USB_OMAP3) || defined(CONFIG_USB_DA8XX) || \
 	defined(CONFIG_USB_BLACKFIN) || defined(CONFIG_USB_AM35X)
 
-int usb_lowlevel_init(void);
-int usb_lowlevel_stop(void);
+int usb_lowlevel_init(int index, void **controller);
+int usb_lowlevel_stop(int index);
+
 int submit_bulk_msg(struct usb_device *dev, unsigned long pipe,
 			void *buffer, int transfer_len);
 int submit_control_msg(struct usb_device *dev, unsigned long pipe, void *buffer,
@@ -382,7 +385,8 @@ void usb_hub_reset(void);
 int hub_port_reset(struct usb_device *dev, int port,
 			  unsigned short *portstat);
 
-struct usb_device *usb_alloc_new_device(void);
+struct usb_device *usb_alloc_new_device(void *controller);
+
 int usb_new_device(struct usb_device *dev);
 
 #endif /*_USB_H_ */
diff --git a/include/usb/mv_udc.h b/include/usb/mv_udc.h
index 51d36c3f34..221e626391 100644
--- a/include/usb/mv_udc.h
+++ b/include/usb/mv_udc.h
@@ -147,5 +147,5 @@ struct ept_queue_item {
 #define INFO_BUFFER_ERROR     (1 << 5)
 #define INFO_TX_ERROR         (1 << 3)
 
-extern int usb_lowlevel_init(void);
+extern int usb_lowlevel_init(int index, void **controller);
 #endif /* __MV_UDC_H__ */