318 lines
7.6 KiB
C
318 lines
7.6 KiB
C
/*
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* Copyright 2009 Freescale Semiconductor, Inc. All Rights Reserved.
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*
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* Author: Fabio Estevam <fabio.estevam@freescale.com>
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*
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* This program is free software; you can redistribute it and/or modify
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* it under the terms of the GNU General Public License as published by
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* the Free Software Foundation; either version 2 of the License, or
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* (at your option) any later version.
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*
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* This program is distributed in the hope that it will be useful,
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* but WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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* GNU General Public License for more details.
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*/
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/*
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* This machine is known as:
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* - i.MX27 3-Stack Development System
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* - i.MX27 Platform Development Kit (i.MX27 PDK)
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*/
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#include <linux/platform_device.h>
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#include <linux/gpio.h>
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#include <linux/irq.h>
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#include <linux/usb/otg.h>
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#include <linux/usb/ulpi.h>
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#include <linux/delay.h>
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#include <linux/mfd/mc13783.h>
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#include <linux/spi/spi.h>
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#include <linux/regulator/machine.h>
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#include <asm/mach-types.h>
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#include <asm/mach/arch.h>
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#include <asm/mach/time.h>
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#include <mach/hardware.h>
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#include <mach/common.h>
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#include <mach/iomux-mx27.h>
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#include <mach/ulpi.h>
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#include <mach/irqs.h>
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#include <mach/3ds_debugboard.h>
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#include "devices-imx27.h"
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#define SD1_EN_GPIO (GPIO_PORTB + 25)
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#define OTG_PHY_RESET_GPIO (GPIO_PORTB + 23)
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#define SPI2_SS0 (GPIO_PORTD + 21)
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#define EXPIO_PARENT_INT (MXC_INTERNAL_IRQS + GPIO_PORTC + 28)
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static const int mx27pdk_pins[] __initconst = {
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/* UART1 */
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PE12_PF_UART1_TXD,
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PE13_PF_UART1_RXD,
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PE14_PF_UART1_CTS,
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PE15_PF_UART1_RTS,
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/* FEC */
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PD0_AIN_FEC_TXD0,
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PD1_AIN_FEC_TXD1,
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PD2_AIN_FEC_TXD2,
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PD3_AIN_FEC_TXD3,
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PD4_AOUT_FEC_RX_ER,
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PD5_AOUT_FEC_RXD1,
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PD6_AOUT_FEC_RXD2,
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PD7_AOUT_FEC_RXD3,
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PD8_AF_FEC_MDIO,
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PD9_AIN_FEC_MDC,
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PD10_AOUT_FEC_CRS,
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PD11_AOUT_FEC_TX_CLK,
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PD12_AOUT_FEC_RXD0,
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PD13_AOUT_FEC_RX_DV,
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PD14_AOUT_FEC_RX_CLK,
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PD15_AOUT_FEC_COL,
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PD16_AIN_FEC_TX_ER,
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PF23_AIN_FEC_TX_EN,
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/* SDHC1 */
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PE18_PF_SD1_D0,
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PE19_PF_SD1_D1,
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PE20_PF_SD1_D2,
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PE21_PF_SD1_D3,
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PE22_PF_SD1_CMD,
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PE23_PF_SD1_CLK,
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SD1_EN_GPIO | GPIO_GPIO | GPIO_OUT,
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/* OTG */
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OTG_PHY_RESET_GPIO | GPIO_GPIO | GPIO_OUT,
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PC7_PF_USBOTG_DATA5,
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PC8_PF_USBOTG_DATA6,
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PC9_PF_USBOTG_DATA0,
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PC10_PF_USBOTG_DATA2,
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PC11_PF_USBOTG_DATA1,
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PC12_PF_USBOTG_DATA4,
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PC13_PF_USBOTG_DATA3,
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PE0_PF_USBOTG_NXT,
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PE1_PF_USBOTG_STP,
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PE2_PF_USBOTG_DIR,
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PE24_PF_USBOTG_CLK,
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PE25_PF_USBOTG_DATA7,
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/* CSPI2 */
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PD22_PF_CSPI2_SCLK,
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PD23_PF_CSPI2_MISO,
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PD24_PF_CSPI2_MOSI,
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/* I2C1 */
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PD17_PF_I2C_DATA,
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PD18_PF_I2C_CLK,
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};
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static const struct imxuart_platform_data uart_pdata __initconst = {
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.flags = IMXUART_HAVE_RTSCTS,
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};
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/*
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* Matrix keyboard
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*/
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static const uint32_t mx27_3ds_keymap[] = {
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KEY(0, 0, KEY_UP),
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KEY(0, 1, KEY_DOWN),
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KEY(1, 0, KEY_RIGHT),
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KEY(1, 1, KEY_LEFT),
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KEY(1, 2, KEY_ENTER),
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KEY(2, 0, KEY_F6),
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KEY(2, 1, KEY_F8),
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KEY(2, 2, KEY_F9),
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KEY(2, 3, KEY_F10),
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};
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static const struct matrix_keymap_data mx27_3ds_keymap_data __initconst = {
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.keymap = mx27_3ds_keymap,
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.keymap_size = ARRAY_SIZE(mx27_3ds_keymap),
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};
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static int mx27_3ds_sdhc1_init(struct device *dev, irq_handler_t detect_irq,
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void *data)
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{
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return request_irq(IRQ_GPIOB(26), detect_irq, IRQF_TRIGGER_FALLING |
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IRQF_TRIGGER_RISING, "sdhc1-card-detect", data);
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}
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static void mx27_3ds_sdhc1_exit(struct device *dev, void *data)
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{
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free_irq(IRQ_GPIOB(26), data);
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}
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static const struct imxmmc_platform_data sdhc1_pdata __initconst = {
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.init = mx27_3ds_sdhc1_init,
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.exit = mx27_3ds_sdhc1_exit,
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};
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static void mx27_3ds_sdhc1_enable_level_translator(void)
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{
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/* Turn on TXB0108 OE pin */
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gpio_request(SD1_EN_GPIO, "sd1_enable");
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gpio_direction_output(SD1_EN_GPIO, 1);
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}
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static int otg_phy_init(void)
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{
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gpio_request(OTG_PHY_RESET_GPIO, "usb-otg-reset");
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gpio_direction_output(OTG_PHY_RESET_GPIO, 0);
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mdelay(1);
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gpio_set_value(OTG_PHY_RESET_GPIO, 1);
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return 0;
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}
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static int mx27_3ds_otg_init(struct platform_device *pdev)
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{
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return mx27_initialize_usb_hw(pdev->id, MXC_EHCI_INTERFACE_DIFF_UNI);
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}
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static struct mxc_usbh_platform_data otg_pdata __initdata = {
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.init = mx27_3ds_otg_init,
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.portsc = MXC_EHCI_MODE_ULPI,
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};
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static const struct fsl_usb2_platform_data otg_device_pdata __initconst = {
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.operating_mode = FSL_USB2_DR_DEVICE,
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.phy_mode = FSL_USB2_PHY_ULPI,
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};
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static int otg_mode_host;
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static int __init mx27_3ds_otg_mode(char *options)
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{
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if (!strcmp(options, "host"))
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otg_mode_host = 1;
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else if (!strcmp(options, "device"))
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otg_mode_host = 0;
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else
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pr_info("otg_mode neither \"host\" nor \"device\". "
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"Defaulting to device\n");
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return 0;
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}
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__setup("otg_mode=", mx27_3ds_otg_mode);
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/* Regulators */
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static struct regulator_consumer_supply vmmc1_consumers[] = {
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REGULATOR_SUPPLY("lcd_2v8", NULL),
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};
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static struct regulator_init_data vmmc1_init = {
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.constraints = {
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.min_uV = 2800000,
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.max_uV = 2800000,
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.valid_ops_mask = REGULATOR_CHANGE_VOLTAGE,
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},
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.num_consumer_supplies = ARRAY_SIZE(vmmc1_consumers),
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.consumer_supplies = vmmc1_consumers,
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};
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static struct regulator_consumer_supply vgen_consumers[] = {
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REGULATOR_SUPPLY("vdd_lcdio", NULL),
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};
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static struct regulator_init_data vgen_init = {
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.constraints = {
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.min_uV = 1800000,
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.max_uV = 1800000,
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.valid_ops_mask = REGULATOR_CHANGE_VOLTAGE,
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},
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.num_consumer_supplies = ARRAY_SIZE(vgen_consumers),
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.consumer_supplies = vgen_consumers,
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};
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static struct mc13xxx_regulator_init_data mx27_3ds_regulators[] = {
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{
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.id = MC13783_REG_VMMC1,
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.init_data = &vmmc1_init,
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}, {
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.id = MC13783_REG_VGEN,
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.init_data = &vgen_init,
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},
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};
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/* MC13783 */
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static struct mc13xxx_platform_data mc13783_pdata = {
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.regulators = {
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.regulators = mx27_3ds_regulators,
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.num_regulators = ARRAY_SIZE(mx27_3ds_regulators),
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},
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.flags = MC13783_USE_REGULATOR,
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};
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/* SPI */
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static int spi2_internal_chipselect[] = {SPI2_SS0};
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static const struct spi_imx_master spi2_pdata __initconst = {
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.chipselect = spi2_internal_chipselect,
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.num_chipselect = ARRAY_SIZE(spi2_internal_chipselect),
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};
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static struct spi_board_info mx27_3ds_spi_devs[] __initdata = {
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{
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.modalias = "mc13783",
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.max_speed_hz = 1000000,
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.bus_num = 1,
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.chip_select = 0, /* SS0 */
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.platform_data = &mc13783_pdata,
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.irq = IRQ_GPIOC(14),
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.mode = SPI_CS_HIGH,
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},
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};
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static const struct imxi2c_platform_data mx27_3ds_i2c0_data __initconst = {
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.bitrate = 100000,
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};
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static void __init mx27pdk_init(void)
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{
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mxc_gpio_setup_multiple_pins(mx27pdk_pins, ARRAY_SIZE(mx27pdk_pins),
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"mx27pdk");
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mx27_3ds_sdhc1_enable_level_translator();
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imx27_add_imx_uart0(&uart_pdata);
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imx27_add_fec(NULL);
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imx27_add_imx_keypad(&mx27_3ds_keymap_data);
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imx27_add_mxc_mmc(0, &sdhc1_pdata);
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imx27_add_imx2_wdt(NULL);
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otg_phy_init();
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if (otg_mode_host) {
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otg_pdata.otg = imx_otg_ulpi_create(ULPI_OTG_DRVVBUS |
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ULPI_OTG_DRVVBUS_EXT);
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if (otg_pdata.otg)
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imx27_add_mxc_ehci_otg(&otg_pdata);
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}
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if (!otg_mode_host)
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imx27_add_fsl_usb2_udc(&otg_device_pdata);
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imx27_add_spi_imx1(&spi2_pdata);
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spi_register_board_info(mx27_3ds_spi_devs,
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ARRAY_SIZE(mx27_3ds_spi_devs));
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if (mxc_expio_init(MX27_CS5_BASE_ADDR, EXPIO_PARENT_INT))
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pr_warn("Init of the debugboard failed, all devices on the debugboard are unusable.\n");
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imx27_add_imx_i2c(0, &mx27_3ds_i2c0_data);
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}
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static void __init mx27pdk_timer_init(void)
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{
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mx27_clocks_init(26000000);
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}
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static struct sys_timer mx27pdk_timer = {
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.init = mx27pdk_timer_init,
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};
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MACHINE_START(MX27_3DS, "Freescale MX27PDK")
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/* maintainer: Freescale Semiconductor, Inc. */
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.boot_params = MX27_PHYS_OFFSET + 0x100,
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.map_io = mx27_map_io,
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.init_early = imx27_init_early,
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.init_irq = mx27_init_irq,
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.timer = &mx27pdk_timer,
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.init_machine = mx27pdk_init,
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MACHINE_END
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