/*
* Copyright 2009 Freescale Semiconductor, Inc. All Rights Reserved.
*
* Author: Fabio Estevam <fabio.estevam@freescale.com>
*
* 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.
*/
/*
* This machine is known as:
* - i.MX27 3-Stack Development System
* - i.MX27 Platform Development Kit (i.MX27 PDK)
*/
#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 <linux/mfd/mc13783.h>
#include <linux/spi/spi.h>
#include <linux/regulator/machine.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 <mach/irqs.h>
#include <mach/3ds_debugboard.h>
#include "devices-imx27.h"
#define SD1_EN_GPIO IMX_GPIO_NR(2, 25)
#define OTG_PHY_RESET_GPIO IMX_GPIO_NR(2, 23)
#define SPI2_SS0 IMX_GPIO_NR(4, 21)
#define EXPIO_PARENT_INT gpio_to_irq(IMX_GPIO_NR(3, 28))
#define PMIC_INT IMX_GPIO_NR(3, 14)
static const int mx27pdk_pins[] __initconst = {
/* UART1 */
PE12_PF_UART1_TXD,
PE13_PF_UART1_RXD,
PE14_PF_UART1_CTS,
PE15_PF_UART1_RTS,
/* FEC */
PD0_AIN_FEC_TXD0,
PD1_AIN_FEC_TXD1,
PD2_AIN_FEC_TXD2,
PD3_AIN_FEC_TXD3,
PD4_AOUT_FEC_RX_ER,
PD5_AOUT_FEC_RXD1,
PD6_AOUT_FEC_RXD2,
PD7_AOUT_FEC_RXD3,
PD8_AF_FEC_MDIO,
PD9_AIN_FEC_MDC,
PD10_AOUT_FEC_CRS,
PD11_AOUT_FEC_TX_CLK,
PD12_AOUT_FEC_RXD0,
PD13_AOUT_FEC_RX_DV,
PD14_AOUT_FEC_RX_CLK,
PD15_AOUT_FEC_COL,
PD16_AIN_FEC_TX_ER,
PF23_AIN_FEC_TX_EN,
/* SDHC1 */
PE18_PF_SD1_D0,
PE19_PF_SD1_D1,
PE20_PF_SD1_D2,
PE21_PF_SD1_D3,
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,
/* CSPI2 */
PD22_PF_CSPI2_SCLK,
PD23_PF_CSPI2_MISO,
PD24_PF_CSPI2_MOSI,
SPI2_SS0 | GPIO_GPIO | GPIO_OUT,
/* I2C1 */
PD17_PF_I2C_DATA,
PD18_PF_I2C_CLK,
/* PMIC INT */
PMIC_INT | GPIO_GPIO | GPIO_IN,
};
static const struct imxuart_platform_data uart_pdata __initconst = {
.flags = IMXUART_HAVE_RTSCTS,
};
/*
* Matrix keyboard
*/
static const uint32_t mx27_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 mx27_3ds_keymap_data __initconst = {
.keymap = mx27_3ds_keymap,
.keymap_size = ARRAY_SIZE(mx27_3ds_keymap),
};
static int mx27_3ds_sdhc1_init(struct device *dev, irq_handler_t detect_irq,
void *data)
{
return request_irq(IRQ_GPIOB(26), detect_irq, IRQF_TRIGGER_FALLING |
IRQF_TRIGGER_RISING, "sdhc1-card-detect", data);
}
static void mx27_3ds_sdhc1_exit(struct device *dev, void *data)
{
free_irq(IRQ_GPIOB(26), data);
}
static const struct imxmmc_platform_data sdhc1_pdata __initconst = {
.init = mx27_3ds_sdhc1_init,
.exit = mx27_3ds_sdhc1_exit,
};
static void mx27_3ds_sdhc1_enable_level_translator(void)
{
/* Turn on TXB0108 OE pin */
gpio_request(SD1_EN_GPIO, "sd1_enable");
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;
}
static int mx27_3ds_otg_init(struct platform_device *pdev)
{
return mx27_initialize_usb_hw(pdev->id, MXC_EHCI_INTERFACE_DIFF_UNI);
}
static struct mxc_usbh_platform_data otg_pdata __initdata = {
.init = mx27_3ds_otg_init,
.portsc = MXC_EHCI_MODE_ULPI,
};
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);
/* Regulators */
static struct regulator_init_data gpo_init = {
.constraints = {
.boot_on = 1,
.always_on = 1,
}
};
static struct regulator_consumer_supply vmmc1_consumers[] = {
REGULATOR_SUPPLY("lcd_2v8", NULL),
};
static struct regulator_init_data vmmc1_init = {
.constraints = {
.min_uV = 2800000,
.max_uV = 2800000,
.apply_uV = 1,
.valid_ops_mask = REGULATOR_CHANGE_VOLTAGE |
REGULATOR_CHANGE_STATUS,
},
.num_consumer_supplies = ARRAY_SIZE(vmmc1_consumers),
.consumer_supplies = vmmc1_consumers,
};
static struct regulator_consumer_supply vgen_consumers[] = {
REGULATOR_SUPPLY("vdd_lcdio", NULL),
};
static struct regulator_init_data vgen_init = {
.constraints = {
.min_uV = 1800000,
.max_uV = 1800000,
.valid_ops_mask = REGULATOR_CHANGE_VOLTAGE,
},
.num_consumer_supplies = ARRAY_SIZE(vgen_consumers),
.consumer_supplies = vgen_consumers,
};
static struct mc13xxx_regulator_init_data mx27_3ds_regulators[] = {
{
.id = MC13783_REG_VMMC1,
.init_data = &vmmc1_init,
}, {
.id = MC13783_REG_VGEN,
.init_data = &vgen_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 = {
.regulators = {
.regulators = mx27_3ds_regulators,
.num_regulators = ARRAY_SIZE(mx27_3ds_regulators),
},
.flags = MC13783_USE_REGULATOR,
};
/* SPI */
static int spi2_internal_chipselect[] = {SPI2_SS0};
static const struct spi_imx_master spi2_pdata __initconst = {
.chipselect = spi2_internal_chipselect,
.num_chipselect = ARRAY_SIZE(spi2_internal_chipselect),
};
static struct spi_board_info mx27_3ds_spi_devs[] __initdata = {
{
.modalias = "mc13783",
.max_speed_hz = 1000000,
.bus_num = 1,
.chip_select = 0, /* SS0 */
.platform_data = &mc13783_pdata,
.irq = IRQ_GPIOC(14),
.mode = SPI_CS_HIGH,
},
};
static const struct imxi2c_platform_data mx27_3ds_i2c0_data __initconst = {
.bitrate = 100000,
};
static void __init mx27pdk_init(void)
{
imx27_soc_init();
mxc_gpio_setup_multiple_pins(mx27pdk_pins, ARRAY_SIZE(mx27pdk_pins),
"mx27pdk");
mx27_3ds_sdhc1_enable_level_translator();
imx27_add_imx_uart0(&uart_pdata);
imx27_add_fec(NULL);
imx27_add_imx_keypad(&mx27_3ds_keymap_data);
imx27_add_mxc_mmc(0, &sdhc1_pdata);
imx27_add_imx2_wdt(NULL);
otg_phy_init();
if (otg_mode_host) {
otg_pdata.otg = imx_otg_ulpi_create(ULPI_OTG_DRVVBUS |
ULPI_OTG_DRVVBUS_EXT);
if (otg_pdata.otg)
imx27_add_mxc_ehci_otg(&otg_pdata);
}
if (!otg_mode_host)
imx27_add_fsl_usb2_udc(&otg_device_pdata);
imx27_add_spi_imx1(&spi2_pdata);
spi_register_board_info(mx27_3ds_spi_devs,
ARRAY_SIZE(mx27_3ds_spi_devs));
if (mxc_expio_init(MX27_CS5_BASE_ADDR, EXPIO_PARENT_INT))
pr_warn("Init of the debugboard failed, all devices on the debugboard are unusable.\n");
imx27_add_imx_i2c(0, &mx27_3ds_i2c0_data);
}
static void __init mx27pdk_timer_init(void)
{
mx27_clocks_init(26000000);
}
static struct sys_timer mx27pdk_timer = {
.init = mx27pdk_timer_init,
};
MACHINE_START(MX27_3DS, "Freescale MX27PDK")
/* maintainer: Freescale Semiconductor, Inc. */
.boot_params = MX27_PHYS_OFFSET + 0x100,
.map_io = mx27_map_io,
.init_early = imx27_init_early,
.init_irq = mx27_init_irq,
.timer = &mx27pdk_timer,
.init_machine = mx27pdk_init,
MACHINE_END
