MX51: Add support for usb host 2

Signed-off-by: Arnaud Patard <arnaud.patard@rtp-net.org>
Signed-off-by: Sascha Hauer <s.hauer@pengutronix.de>

arch/arm/mach-mx5/devices.c

@@ -97,6 +97,29 @@ struct platform_device mxc_usbh1_device = {
 	},
 };
 
+static struct resource usbh2_resources[] = {
+	{
+		.start = MX51_OTG_BASE_ADDR + 0x400,
+		.end = MX51_OTG_BASE_ADDR + 0x400 + 0x1ff,
+		.flags = IORESOURCE_MEM,
+	},
+	{
+		.start = MX51_MXC_INT_USB_H2,
+		.flags = IORESOURCE_IRQ,
+	},
+};
+
+struct platform_device mxc_usbh2_device = {
+	.name = "mxc-ehci",
+	.id = 2,
+	.num_resources = ARRAY_SIZE(usbh2_resources),
+	.resource = usbh2_resources,
+	.dev = {
+		.dma_mask = &usb_dma_mask,
+		.coherent_dma_mask = DMA_BIT_MASK(32),
+	},
+};
+
 static struct resource mxc_kpp_resources[] = {
 	{
 		.start = MX51_MXC_INT_KPP,

arch/arm/mach-mx5/devices.h

@@ -1,5 +1,6 @@
 extern struct platform_device mxc_usbdr_host_device;
 extern struct platform_device mxc_usbh1_device;
+extern struct platform_device mxc_usbh2_device;
 extern struct platform_device mxc_usbdr_udc_device;
 extern struct platform_device mxc_hsi2c_device;
 extern struct platform_device mxc_keypad_device;

arch/arm/plat-mxc/ehci.c

@@ -49,6 +49,7 @@
 
 #define MXC_OTG_OFFSET		0
 #define MXC_H1_OFFSET		0x200
+#define MXC_H2_OFFSET		0x400
 
 /* USB_CTRL */
 #define MXC_OTG_UCTRL_OWIE_BIT		(1 << 27)	/* OTG wakeup intr enable */
@@ -61,6 +62,11 @@
 #define MXC_OTG_PHYCTRL_OC_DIS_BIT	(1 << 8)	/* OTG Disable Overcurrent Event */
 #define MXC_H1_OC_DIS_BIT			(1 << 5)	/* UH1 Disable Overcurrent Event */
 
+/* USBH2CTRL */
+#define MXC_H2_UCTRL_H2UIE_BIT		(1 << 8)
+#define MXC_H2_UCTRL_H2WIE_BIT		(1 << 7)
+#define MXC_H2_UCTRL_H2PM_BIT		(1 << 4)
+
 #define MXC_USBCMD_OFFSET			0x140
 
 /* USBCMD */
@@ -266,6 +272,9 @@ int mxc_initialize_usb_hw(int port, unsigned int flags)
 		case 1:	/* Host 1 port */
 			usbotg_base = usb_base + MXC_H1_OFFSET;
 			break;
+		case 2: /* Host 2 port */
+			usbotg_base = usb_base + MXC_H2_OFFSET;
+			break;
 		default:
 			printk(KERN_ERR"%s no such port %d\n", __func__, port);
 			ret = -ENOENT;
@@ -329,6 +338,22 @@ int mxc_initialize_usb_hw(int port, unsigned int flags)
 				v &= MXC_UCMD_ITC_NO_THRESHOLD_MASK;
 			__raw_writel(v, usbotg_base + MXC_USBCMD_OFFSET);
 			break;
+		case 2: /* Host 2 ULPI */
+			v = __raw_readl(usbother_base + MXC_USBH2CTRL_OFFSET);
+			if (flags & MXC_EHCI_WAKEUP_ENABLED) {
+				/* HOST1 wakeup/ULPI intr enable */
+				v |= (MXC_H2_UCTRL_H2WIE_BIT | MXC_H2_UCTRL_H2UIE_BIT);
+			} else {
+				/* HOST1 wakeup/ULPI intr disable */
+				v &= ~(MXC_H2_UCTRL_H2WIE_BIT | MXC_H2_UCTRL_H2UIE_BIT);
+			}
+
+			if (flags & MXC_EHCI_POWER_PINS_ENABLED)
+				v &= ~MXC_H2_UCTRL_H2PM_BIT; /* HOST2 power mask used*/
+			else
+				v |= MXC_H2_UCTRL_H2PM_BIT; /* HOST2 power mask used*/
+			__raw_writel(v, usbother_base + MXC_USBH2CTRL_OFFSET);
+			break;
 		}
 
 error:

arch/arm/plat-mxc/include/mach/mxc_ehci.h

@@ -31,6 +31,7 @@
 #define MXC_USBCTRL_OFFSET		0
 #define MXC_USB_PHY_CTR_FUNC_OFFSET	0x8
 #define MXC_USB_PHY_CTR_FUNC2_OFFSET	0xc
+#define MXC_USBH2CTRL_OFFSET		0x14
 
 #define MX5_USBOTHER_REGS_OFFSET	0x800