ARM: imx/mx27_3ds: Add USB OTG support
Signed-off-by: Fabio Estevam <fabio.estevam@freescale.com>
Signed-off-by: Sascha Hauer <s.hauer@pengutronix.de>
diff --git a/arch/arm/mach-imx/mach-mx27_3ds.c b/arch/arm/mach-imx/mach-mx27_3ds.c
index 1a7e879..0ee7a73 100644
--- a/arch/arm/mach-imx/mach-mx27_3ds.c
+++ b/arch/arm/mach-imx/mach-mx27_3ds.c
@@ -23,16 +23,22 @@
#include <linux/platform_device.h>
#include <linux/gpio.h>
#include <linux/irq.h>
+#include <linux/usb/otg.h>
+#include <linux/usb/ulpi.h>
+#include <linux/delay.h>
+
#include <asm/mach-types.h>
#include <asm/mach/arch.h>
#include <asm/mach/time.h>
#include <mach/hardware.h>
#include <mach/common.h>
#include <mach/iomux-mx27.h>
+#include <mach/ulpi.h>
#include "devices-imx27.h"
#define SD1_EN_GPIO (GPIO_PORTB + 25)
+#define OTG_PHY_RESET_GPIO (GPIO_PORTB + 23)
static const int mx27pdk_pins[] __initconst = {
/* UART1 */
@@ -67,6 +73,20 @@
PE22_PF_SD1_CMD,
PE23_PF_SD1_CLK,
SD1_EN_GPIO | GPIO_GPIO | GPIO_OUT,
+ /* OTG */
+ OTG_PHY_RESET_GPIO | GPIO_GPIO | GPIO_OUT,
+ PC7_PF_USBOTG_DATA5,
+ PC8_PF_USBOTG_DATA6,
+ PC9_PF_USBOTG_DATA0,
+ PC10_PF_USBOTG_DATA2,
+ PC11_PF_USBOTG_DATA1,
+ PC12_PF_USBOTG_DATA4,
+ PC13_PF_USBOTG_DATA3,
+ PE0_PF_USBOTG_NXT,
+ PE1_PF_USBOTG_STP,
+ PE2_PF_USBOTG_DIR,
+ PE24_PF_USBOTG_CLK,
+ PE25_PF_USBOTG_DATA7,
};
static const struct imxuart_platform_data uart_pdata __initconst = {
@@ -118,6 +138,45 @@
gpio_direction_output(SD1_EN_GPIO, 1);
}
+
+static int otg_phy_init(void)
+{
+ gpio_request(OTG_PHY_RESET_GPIO, "usb-otg-reset");
+ gpio_direction_output(OTG_PHY_RESET_GPIO, 0);
+ mdelay(1);
+ gpio_set_value(OTG_PHY_RESET_GPIO, 1);
+ return 0;
+}
+
+#if defined(CONFIG_USB_ULPI)
+
+static struct mxc_usbh_platform_data otg_pdata __initdata = {
+ .portsc = MXC_EHCI_MODE_ULPI,
+ .flags = MXC_EHCI_INTERFACE_DIFF_UNI,
+};
+#endif
+
+static const struct fsl_usb2_platform_data otg_device_pdata __initconst = {
+ .operating_mode = FSL_USB2_DR_DEVICE,
+ .phy_mode = FSL_USB2_PHY_ULPI,
+};
+
+static int otg_mode_host;
+
+static int __init mx27_3ds_otg_mode(char *options)
+{
+ if (!strcmp(options, "host"))
+ otg_mode_host = 1;
+ else if (!strcmp(options, "device"))
+ otg_mode_host = 0;
+ else
+ pr_info("otg_mode neither \"host\" nor \"device\". "
+ "Defaulting to device\n");
+ return 0;
+}
+__setup("otg_mode=", mx27_3ds_otg_mode);
+
+
static void __init mx27pdk_init(void)
{
mxc_gpio_setup_multiple_pins(mx27pdk_pins, ARRAY_SIZE(mx27pdk_pins),
@@ -128,6 +187,18 @@
imx27_add_imx_keypad(&mx27_3ds_keymap_data);
imx27_add_mxc_mmc(0, &sdhc1_pdata);
imx27_add_imx2_wdt(NULL);
+ otg_phy_init();
+#if defined(CONFIG_USB_ULPI)
+ if (otg_mode_host) {
+ otg_pdata.otg = otg_ulpi_create(&mxc_ulpi_access_ops,
+ ULPI_OTG_DRVVBUS | ULPI_OTG_DRVVBUS_EXT);
+
+ imx27_add_mxc_ehci_otg(&otg_pdata);
+ }
+#endif
+ if (!otg_mode_host)
+ imx27_add_fsl_usb2_udc(&otg_device_pdata);
+
}
static void __init mx27pdk_timer_init(void)