Commit 96cf4239 authored by Fabio Estevam's avatar Fabio Estevam Committed by Sascha Hauer
Browse files

ARM: imx/mx27_3ds: Add USB OTG support 



Signed-off-by: default avatarFabio Estevam <fabio.estevam@freescale.com>
Signed-off-by: default avatarSascha Hauer <s.hauer@pengutronix.de>
parent 130a0dda

arch/arm/mach-imx/Kconfig

+3 −0
Original line number Original line Diff line number Diff line
@@ -235,10 +235,13 @@ endchoice 
config MACH_MX27_3DS

config MACH_MX27_3DS

	bool "MX27PDK platform"

	bool "MX27PDK platform"

	select SOC_IMX27

	select SOC_IMX27

	select IMX_HAVE_PLATFORM_FSL_USB2_UDC

	select IMX_HAVE_PLATFORM_IMX2_WDT

	select IMX_HAVE_PLATFORM_IMX2_WDT

	select IMX_HAVE_PLATFORM_IMX_KEYPAD

	select IMX_HAVE_PLATFORM_IMX_KEYPAD

	select IMX_HAVE_PLATFORM_IMX_UART

	select IMX_HAVE_PLATFORM_IMX_UART

	select IMX_HAVE_PLATFORM_MXC_EHCI

	select IMX_HAVE_PLATFORM_MXC_MMC

	select IMX_HAVE_PLATFORM_MXC_MMC

	select MXC_ULPI if USB_ULPI

	help

	help

	  Include support for MX27PDK platform. This includes specific

	  Include support for MX27PDK platform. This includes specific

	  configurations for the board and its peripherals.

	  configurations for the board and its peripherals.

arch/arm/mach-imx/mach-mx27_3ds.c

+71 −0
Original line number Original line Diff line number Diff line
@@ -23,16 +23,22 @@ 
#include <linux/platform_device.h>

#include <linux/platform_device.h>

#include <linux/gpio.h>

#include <linux/gpio.h>

#include <linux/irq.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-types.h>

#include <asm/mach/arch.h>

#include <asm/mach/arch.h>

#include <asm/mach/time.h>

#include <asm/mach/time.h>

#include <mach/hardware.h>

#include <mach/hardware.h>

#include <mach/common.h>

#include <mach/common.h>

#include <mach/iomux-mx27.h>

#include <mach/iomux-mx27.h>

#include <mach/ulpi.h>





#include "devices-imx27.h"

#include "devices-imx27.h"





#define SD1_EN_GPIO (GPIO_PORTB + 25)

#define SD1_EN_GPIO (GPIO_PORTB + 25)

#define OTG_PHY_RESET_GPIO (GPIO_PORTB + 23)





static const int mx27pdk_pins[] __initconst = {

static const int mx27pdk_pins[] __initconst = {

	/* UART1 */

	/* UART1 */
@@ -67,6 +73,20 @@ static const int mx27pdk_pins[] __initconst = { 
	PE22_PF_SD1_CMD,

	PE22_PF_SD1_CMD,

	PE23_PF_SD1_CLK,

	PE23_PF_SD1_CLK,

	SD1_EN_GPIO | GPIO_GPIO | GPIO_OUT,

	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 = {

static const struct imxuart_platform_data uart_pdata __initconst = {
@@ -118,6 +138,45 @@ static void mx27_3ds_sdhc1_enable_level_translator(void) 
	gpio_direction_output(SD1_EN_GPIO, 1);

	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)

static void __init mx27pdk_init(void)

{

{

	mxc_gpio_setup_multiple_pins(mx27pdk_pins, ARRAY_SIZE(mx27pdk_pins),

	mxc_gpio_setup_multiple_pins(mx27pdk_pins, ARRAY_SIZE(mx27pdk_pins),
@@ -128,6 +187,18 @@ static void __init mx27pdk_init(void) 
	imx27_add_imx_keypad(&mx27_3ds_keymap_data);

	imx27_add_imx_keypad(&mx27_3ds_keymap_data);

	imx27_add_mxc_mmc(0, &sdhc1_pdata);

	imx27_add_mxc_mmc(0, &sdhc1_pdata);

	imx27_add_imx2_wdt(NULL);

	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)

static void __init mx27pdk_timer_init(void)