ARM: MX3: add USB functions for mx31litekit

Signed-off-by: Daniel Mack <daniel@caiaq.de>
Signed-off-by: Sascha Hauer <s.hauer@pengutronix.de>

1 files changed, 60 insertions, 0 deletions

diff --git a/arch/arm/mach-mx3/mx31lite.c b/arch/arm/mach-mx3/mx31lite.c
index 03762a36d29f..4651e2376a71 100644
--- a/arch/arm/mach-mx3/mx31lite.c
+++ b/arch/arm/mach-mx3/mx31lite.c
@@ -28,6 +28,8 @@
 #include <linux/smsc911x.h>
 #include <linux/mfd/mc13783.h>
 #include <linux/spi/spi.h>
+#include <linux/usb/otg.h>
+#include <linux/usb/ulpi.h>
 
 #include <asm/mach-types.h>
 #include <asm/mach/arch.h>
@@ -44,6 +46,8 @@
 #include <mach/irqs.h>
 #include <mach/mxc_nand.h>
 #include <mach/spi.h>
+#include <mach/mxc_ehci.h>
+#include <mach/ulpi.h>
 
 #include "devices.h"
 
@@ -127,6 +131,56 @@ static struct spi_board_info mc13783_spi_dev __initdata = {
 };
 
 /*
+ * USB
+ */
+
+#define USB_PAD_CFG (PAD_CTL_DRV_MAX | PAD_CTL_SRE_FAST | PAD_CTL_HYS_CMOS | \
+                        PAD_CTL_ODE_CMOS | PAD_CTL_100K_PU)
+
+static int usbh2_init(struct platform_device *pdev)
+{
+        int pins[] = {
+                MX31_PIN_USBH2_DATA0__USBH2_DATA0,
+                MX31_PIN_USBH2_DATA1__USBH2_DATA1,
+                MX31_PIN_USBH2_CLK__USBH2_CLK,
+                MX31_PIN_USBH2_DIR__USBH2_DIR,
+                MX31_PIN_USBH2_NXT__USBH2_NXT,
+                MX31_PIN_USBH2_STP__USBH2_STP,
+        };
+
+        mxc_iomux_setup_multiple_pins(pins, ARRAY_SIZE(pins), "USB H2");
+
+        mxc_iomux_set_pad(MX31_PIN_USBH2_CLK, USB_PAD_CFG);
+        mxc_iomux_set_pad(MX31_PIN_USBH2_DIR, USB_PAD_CFG);
+        mxc_iomux_set_pad(MX31_PIN_USBH2_NXT, USB_PAD_CFG);
+        mxc_iomux_set_pad(MX31_PIN_USBH2_STP, USB_PAD_CFG);
+        mxc_iomux_set_pad(MX31_PIN_USBH2_DATA0, USB_PAD_CFG);
+        mxc_iomux_set_pad(MX31_PIN_USBH2_DATA1, USB_PAD_CFG);
+        mxc_iomux_set_pad(MX31_PIN_SRXD6, USB_PAD_CFG);
+        mxc_iomux_set_pad(MX31_PIN_STXD6, USB_PAD_CFG);
+        mxc_iomux_set_pad(MX31_PIN_SFS3, USB_PAD_CFG);
+        mxc_iomux_set_pad(MX31_PIN_SCK3, USB_PAD_CFG);
+        mxc_iomux_set_pad(MX31_PIN_SRXD3, USB_PAD_CFG);
+        mxc_iomux_set_pad(MX31_PIN_STXD3, USB_PAD_CFG);
+
+        mxc_iomux_set_gpr(MUX_PGP_UH2, true);
+
+        /* chip select */
+        mxc_iomux_alloc_pin(IOMUX_MODE(MX31_PIN_DTR_DCE1, IOMUX_CONFIG_GPIO),
+                                "USBH2_CS");
+        gpio_request(IOMUX_TO_GPIO(MX31_PIN_DTR_DCE1), "USBH2 CS");
+        gpio_direction_output(IOMUX_TO_GPIO(MX31_PIN_DTR_DCE1), 0);
+
+        return 0;
+}
+
+static struct mxc_usbh_platform_data usbh2_pdata = {
+        .init   = usbh2_init,
+        .portsc = MXC_EHCI_MODE_ULPI | MXC_EHCI_UTMI_8BIT,
+        .flags  = MXC_EHCI_POWER_PINS_ENABLED,
+};
+
+/*
  * This structure defines the MX31 memory map.
  */
 static struct map_desc mx31lite_io_desc[] __initdata = {
@@ -177,6 +231,12 @@ static void __init mxc_board_init(void)
         mxc_register_device(&mxc_spi_device1, &spi1_pdata);
         spi_register_board_info(&mc13783_spi_dev, 1);
 
+        /* USB */
+        usbh2_pdata.otg = otg_ulpi_create(&mxc_ulpi_access_ops,
+                                USB_OTG_DRV_VBUS | USB_OTG_DRV_VBUS_EXT);
+
+        mxc_register_device(&mxc_usbh2, &usbh2_pdata);
+
         /* SMSC9117 IRQ pin */
         ret = gpio_request(IOMUX_TO_GPIO(MX31_PIN_SFS6), "sms9117-irq");
         if (ret)