/*
* Copyright 2008 Freescale Semiconductor, Inc. All Rights Reserved.
*
* This program is free software; you can redistribute it and/or modify
* it under the terms of the GNU General Public License as published by
* the Free Software Foundation; either version 2 of the License, or
* (at your option) any later version.
*
* This program is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
* GNU General Public License for more details.
*/
#include <linux/delay.h>
#include <linux/types.h>
#include <linux/init.h>
#include <linux/clk.h>
#include <linux/irq.h>
#include <linux/gpio.h>
#include <linux/platform_device.h>
#include <linux/mfd/mc13783.h>
#include <linux/spi/spi.h>
#include <linux/regulator/machine.h>
#include <linux/usb/otg.h>
#include <linux/usb/ulpi.h>
#include <mach/hardware.h>
#include <asm/mach-types.h>
#include <asm/mach/arch.h>
#include <asm/mach/time.h>
#include <asm/memory.h>
#include <asm/mach/map.h>
#include <mach/common.h>
#include <mach/iomux-mx3.h>
#include <mach/3ds_debugboard.h>
#include <mach/ulpi.h>
#include "devices-imx31.h"
#include "devices.h"
/* CPLD IRQ line for external uart, external ethernet etc */
#define EXPIO_PARENT_INT IOMUX_TO_IRQ(MX31_PIN_GPIO1_1)
/*
* This file contains the board-specific initialization routines.
*/
static int mx31_3ds_pins[] = {
/* UART1 */
MX31_PIN_CTS1__CTS1,
MX31_PIN_RTS1__RTS1,
MX31_PIN_TXD1__TXD1,
MX31_PIN_RXD1__RXD1,
IOMUX_MODE(MX31_PIN_GPIO1_1, IOMUX_CONFIG_GPIO),
/* SPI 1 */
MX31_PIN_CSPI2_SCLK__SCLK,
MX31_PIN_CSPI2_MOSI__MOSI,
MX31_PIN_CSPI2_MISO__MISO,
MX31_PIN_CSPI2_SPI_RDY__SPI_RDY,
MX31_PIN_CSPI2_SS0__SS0,
MX31_PIN_CSPI2_SS2__SS2, /*CS for MC13783 */
/* MC13783 IRQ */
IOMUX_MODE(MX31_PIN_GPIO1_3, IOMUX_CONFIG_GPIO),
/* USB OTG reset */
IOMUX_MODE(MX31_PIN_USB_PWR, IOMUX_CONFIG_GPIO),
/* USB OTG */
MX31_PIN_USBOTG_DATA0__USBOTG_DATA0,
MX31_PIN_USBOTG_DATA1__USBOTG_DATA1,
MX31_PIN_USBOTG_DATA2__USBOTG_DATA2,
MX31_PIN_USBOTG_DATA3__USBOTG_DATA3,
MX31_PIN_USBOTG_DATA4__USBOTG_DATA4,
MX31_PIN_USBOTG_DATA5__USBOTG_DATA5,
MX31_PIN_USBOTG_DATA6__USBOTG_DATA6,
MX31_PIN_USBOTG_DATA7__USBOTG_DATA7,
MX31_PIN_USBOTG_CLK__USBOTG_CLK,
MX31_PIN_USBOTG_DIR__USBOTG_DIR,
MX31_PIN_USBOTG_NXT__USBOTG_NXT,
MX31_PIN_USBOTG_STP__USBOTG_STP,
/*Keyboard*/
MX31_PIN_KEY_ROW0_KEY_ROW0,
MX31_PIN_KEY_ROW1_KEY_ROW1,
MX31_PIN_KEY_ROW2_KEY_ROW2,
MX31_PIN_KEY_COL0_KEY_COL0,
MX31_PIN_KEY_COL1_KEY_COL1,
MX31_PIN_KEY_COL2_KEY_COL2,
MX31_PIN_KEY_COL3_KEY_COL3,
/* USB Host 2 */
IOMUX_MODE(MX31_PIN_USBH2_CLK, IOMUX_CONFIG_FUNC),
IOMUX_MODE(MX31_PIN_USBH2_DIR, IOMUX_CONFIG_FUNC),
IOMUX_MODE(MX31_PIN_USBH2_NXT, IOMUX_CONFIG_FUNC),
IOMUX_MODE(MX31_PIN_USBH2_STP, IOMUX_CONFIG_FUNC),
IOMUX_MODE(MX31_PIN_USBH2_DATA0, IOMUX_CONFIG_FUNC),
IOMUX_MODE(MX31_PIN_USBH2_DATA1, IOMUX_CONFIG_FUNC),
IOMUX_MODE(MX31_PIN_PC_VS2, IOMUX_CONFIG_ALT1),
IOMUX_MODE(MX31_PIN_PC_BVD1, IOMUX_CONFIG_ALT1),
IOMUX_MODE(MX31_PIN_PC_BVD2, IOMUX_CONFIG_ALT1),
IOMUX_MODE(MX31_PIN_PC_RST, IOMUX_CONFIG_ALT1),
IOMUX_MODE(MX31_PIN_IOIS16, IOMUX_CONFIG_ALT1),
IOMUX_MODE(MX31_PIN_PC_RW_B, IOMUX_CONFIG_ALT1),
/* USB Host2 reset */
IOMUX_MODE(MX31_PIN_USB_BYP, IOMUX_CONFIG_GPIO),
};
/*
* Matrix keyboard
*/
static const uint32_t mx31_3ds_keymap[] = {
KEY(0, 0, KEY_UP),
KEY(0, 1, KEY_DOWN),
KEY(1, 0, KEY_RIGHT),
KEY(1, 1, KEY_LEFT),
KEY(1, 2, KEY_ENTER),
KEY(2, 0, KEY_F6),
KEY(2, 1, KEY_F8),
KEY(2, 2, KEY_F9),
KEY(2, 3, KEY_F10),
};
static const struct matrix_keymap_data mx31_3ds_keymap_data __initconst = {
.keymap = mx31_3ds_keymap,
.keymap_size = ARRAY_SIZE(mx31_3ds_keymap),
};
/* Regulators */
static struct regulator_init_data pwgtx_init = {
.constraints = {
.boot_on = 1,
.always_on = 1,
},
};
static struct regulator_init_data gpo_init = {
.constraints = {
.boot_on = 1,
.always_on = 1,
}
};
static struct mc13xxx_regulator_init_data mx31_3ds_regulators[] = {
{
.id = MC13783_REG_PWGT1SPI, /* Power Gate for ARM core. */
.init_data = &pwgtx_init,
}, {
.id = MC13783_REG_PWGT2SPI, /* Power Gate for L2 Cache. */
.init_data = &pwgtx_init,
}, {
.id = MC13783_REG_GPO1, /* Turn on 1.8V */
.init_data = &gpo_init,
}, {
.id = MC13783_REG_GPO3, /* Turn on 3.3V */
.init_data = &gpo_init,
},
};
/* MC13783 */
static struct mc13xxx_platform_data mc13783_pdata __initdata = {
.regulators = mx31_3ds_regulators,
.num_regulators = ARRAY_SIZE(mx31_3ds_regulators),
.flags = MC13XXX_USE_REGULATOR | MC13XXX_USE_TOUCHSCREEN
};
/* SPI */
static int spi1_internal_chipselect[] = {
MXC_SPI_CS(0),
MXC_SPI_CS(2),
};
static const struct spi_imx_master spi1_pdata __initconst = {
.chipselect = spi1_internal_chipselect,
.num_chipselect = ARRAY_SIZE(spi1_internal_chipselect),
};
static struct spi_board_info mx31_3ds_spi_devs[] __initdata = {
{
.modalias = "mc13783",
.max_speed_hz = 1000000,
.bus_num = 1,
.chip_select = 1, /* SS2 */
.platform_data = &mc13783_pdata,
.irq = IOMUX_TO_IRQ(MX31_PIN_GPIO1_3),
.mode = SPI_CS_HIGH,
},
};
/*
* NAND Flash
*/
static const struct mxc_nand_platform_data
mx31_3ds_nand_board_info __initconst = {
.width = 1,
.hw_ecc = 1,
#ifdef MACH_MX31_3DS_MXC_NAND_USE_BBT
.flash_bbt = 1,
#endif
};
/*
* USB OTG
*/
#define USB_PAD_CFG (PAD_CTL_DRV_MAX | PAD_CTL_SRE_FAST | PAD_CTL_HYS_CMOS | \
PAD_CTL_ODE_CMOS | PAD_CTL_100K_PU)
#define USBOTG_RST_B IOMUX_TO_GPIO(MX31_PIN_USB_PWR)
#define USBH2_RST_B IOMUX_TO_GPIO(MX31_PIN_USB_BYP)
static int mx31_3ds_usbotg_init(void)
{
int err;
mxc_iomux_set_pad(MX31_PIN_USBOTG_DATA0, USB_PAD_CFG);
mxc_iomux_set_pad(MX31_PIN_USBOTG_DATA1, USB_PAD_CFG);
mxc_iomux_set_pad(MX31_PIN_USBOTG_DATA2, USB_PAD_CFG);
mxc_iomux_set_pad(MX31_PIN_USBOTG_DATA3, USB_PAD_CFG);
mxc_iomux_set_pad(MX31_PIN_USBOTG_DATA4, USB_PAD_CFG);
mxc_iomux_set_pad(MX31_PIN_USBOTG_DATA5, USB_PAD_CFG);
mxc_iomux_set_pad(MX31_PIN_USBOTG_DATA6, USB_PAD_CFG);
mxc_iomux_set_pad(MX31_PIN_USBOTG_DATA7, USB_PAD_CFG);
mxc_iomux_set_pad(MX31_PIN_USBOTG_CLK, USB_PAD_CFG);
mxc_iomux_set_pad(MX31_PIN_USBOTG_DIR, USB_PAD_CFG);
mxc_iomux_set_pad(MX31_PIN_USBOTG_NXT, USB_PAD_CFG);
mxc_iomux_set_pad(MX31_PIN_USBOTG_STP, USB_PAD_CFG);
err = gpio_request(USBOTG_RST_B, "otgusb-reset");
if (err) {
pr_err("Failed to request the USB OTG reset gpio\n");
return err;
}
err = gpio_direction_output(USBOTG_RST_B, 0);
if (err) {
pr_err("Failed to drive the USB OTG reset gpio\n");
goto usbotg_free_reset;
}
mdelay(1);
gpio_set_value(USBOTG_RST_B, 1);
return 0;
usbotg_free_reset:
gpio_free(USBOTG_RST_B);
return err;
}
#if defined(CONFIG_USB_ULPI)
static int mx31_3ds_otg_init(struct platform_device *pdev)
{
return mx31_initialize_usb_hw(pdev->id, MXC_EHCI_POWER_PINS_ENABLED);
}
static int mx31_3ds_host2_init(struct platform_device *pdev)
{
int err;
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_PC_VS2, USB_PAD_CFG);
mxc_iomux_set_pad(MX31_PIN_PC_BVD1, USB_PAD_CFG);
mxc_iomux_set_pad(MX31_PIN_PC_BVD2, USB_PAD_CFG);
mxc_iomux_set_pad(MX31_PIN_PC_RST, USB_PAD_CFG);
mxc_iomux_set_pad(MX31_PIN_IOIS16, USB_PAD_CFG);
mxc_iomux_set_pad(MX31_PIN_PC_RW_B, USB_PAD_CFG);
err = gpio_request(USBH2_RST_B, "usbh2-reset");
if (err) {
pr_err("Failed to request the USB Host 2 reset gpio\n");
return err;
}
err = gpio_direction_output(USBH2_RST_B, 0);
if (err) {
pr_err("Failed to drive the USB Host 2 reset gpio\n");
goto usbotg_free_reset;
}
mdelay(1);
gpio_set_value(USBH2_RST_B, 1);
mdelay(10);
return mx31_initialize_usb_hw(pdev->id, MXC_EHCI_POWER_PINS_ENABLED);
usbotg_free_reset:
gpio_free(USBH2_RST_B);
return err;
}
static struct mxc_usbh_platform_data otg_pdata __initdata = {
.init = mx31_3ds_otg_init,
.portsc = MXC_EHCI_MODE_ULPI,
};
static struct mxc_usbh_platform_data usbh2_pdata __initdata = {
.init = mx31_3ds_host2_init,
.portsc = MXC_EHCI_MODE_ULPI,
};
#endif
static const struct fsl_usb2_platform_data usbotg_pdata __initconst = {
.operating_mode = FSL_USB2_DR_DEVICE,
.phy_mode = FSL_USB2_PHY_ULPI,
};
static int otg_mode_host;
static int __init mx31_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=", mx31_3ds_otg_mode);
static const struct imxuart_platform_data uart_pdata __initconst = {
.flags = IMXUART_HAVE_RTSCTS,
};
/*!
* Board specific initialization.
*/
static void __init mxc_board_init(void)
{
mxc_iomux_setup_multiple_pins(mx31_3ds_pins, ARRAY_SIZE(mx31_3ds_pins),
"mx31_3ds");
imx31_add_imx_uart0(&uart_pdata);
imx31_add_mxc_nand(&mx31_3ds_nand_board_info);
imx31_add_spi_imx1(&spi1_pdata);
spi_register_board_info(mx31_3ds_spi_devs,
ARRAY_SIZE(mx31_3ds_spi_devs));
imx31_add_imx_keypad(&mx31_3ds_keymap_data);
mx31_3ds_usbotg_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);
imx31_add_mxc_ehci_otg(&otg_pdata);
}
usbh2_pdata.otg = otg_ulpi_create(&mxc_ulpi_access_ops,
ULPI_OTG_DRVVBUS | ULPI_OTG_DRVVBUS_EXT);
imx31_add_mxc_ehci_hs(2, &usbh2_pdata);
#endif
if (!otg_mode_host)
imx31_add_fsl_usb2_udc(&usbotg_pdata);
if (mxc_expio_init(MX31_CS5_BASE_ADDR, EXPIO_PARENT_INT))
printk(KERN_WARNING "Init of the debug board failed, all "
"devices on the debug board are unusable.\n");
imx31_add_imx2_wdt(NULL);
}
static void __init mx31_3ds_timer_init(void)
{
mx31_clocks_init(26000000);
}
static struct sys_timer mx31_3ds_timer = {
.init = mx31_3ds_timer_init,
};
/*
* The following uses standard kernel macros defined in arch.h in order to
* initialize __mach_desc_MX31_3DS data structure.
*/
MACHINE_START(MX31_3DS, "Freescale MX31PDK (3DS)")
/* Maintainer: Freescale Semiconductor, Inc. */
.boot_params = MX3x_PHYS_OFFSET + 0x100,
.map_io = mx31_map_io,
.init_early = imx31_init_early,
.init_irq = mx31_init_irq,
.timer = &mx31_3ds_timer,
.init_machine = mxc_board_init,
MACHINE_END
