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

   1 /*
   2  * Copyright 2009 Freescale Semiconductor, Inc. All Rights Reserved.
   3  *
   4  * Author: Fabio Estevam <fabio.estevam@freescale.com>
   5  *
   6  * This program is free software; you can redistribute it and/or modify
   7  * it under the terms of the GNU General Public License as published by
   8  * the Free Software Foundation; either version 2 of the License, or
   9  * (at your option) any later version.
  10  *
  11  * This program is distributed in the hope that it will be useful,
  12  * but WITHOUT ANY WARRANTY; without even the implied warranty of
  13  * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
  14  * GNU General Public License for more details.
  15  */
  16
  17 /*
  18  * This machine is known as:
  19  *  - i.MX27 3-Stack Development System
  20  *  - i.MX27 Platform Development Kit (i.MX27 PDK)
  21  */
  22
  23 #include <linux/platform_device.h>
  24 #include <linux/gpio.h>
  25 #include <linux/irq.h>
  26 #include <asm/mach-types.h>
  27 #include <asm/mach/arch.h>
  28 #include <asm/mach/time.h>
  29 #include <mach/hardware.h>
  30 #include <mach/common.h>
  31 #include <mach/iomux-mx27.h>
  32
  33 #include "devices-imx27.h"
  34
  35 #define SD1_EN_GPIO (GPIO_PORTB + 25)
  36
  37 static const int mx27pdk_pins[] __initconst = {
  38         /* UART1 */
  39         PE12_PF_UART1_TXD,
  40         PE13_PF_UART1_RXD,
  41         PE14_PF_UART1_CTS,
  42         PE15_PF_UART1_RTS,
  43         /* FEC */
  44         PD0_AIN_FEC_TXD0,
  45         PD1_AIN_FEC_TXD1,
  46         PD2_AIN_FEC_TXD2,
  47         PD3_AIN_FEC_TXD3,
  48         PD4_AOUT_FEC_RX_ER,
  49         PD5_AOUT_FEC_RXD1,
  50         PD6_AOUT_FEC_RXD2,
  51         PD7_AOUT_FEC_RXD3,
  52         PD8_AF_FEC_MDIO,
  53         PD9_AIN_FEC_MDC,
  54         PD10_AOUT_FEC_CRS,
  55         PD11_AOUT_FEC_TX_CLK,
  56         PD12_AOUT_FEC_RXD0,
  57         PD13_AOUT_FEC_RX_DV,
  58         PD14_AOUT_FEC_RX_CLK,
  59         PD15_AOUT_FEC_COL,
  60         PD16_AIN_FEC_TX_ER,
  61         PF23_AIN_FEC_TX_EN,
  62         /* SDHC1 */
  63         PE18_PF_SD1_D0,
  64         PE19_PF_SD1_D1,
  65         PE20_PF_SD1_D2,
  66         PE21_PF_SD1_D3,
  67         PE22_PF_SD1_CMD,
  68         PE23_PF_SD1_CLK,
  69         SD1_EN_GPIO | GPIO_GPIO | GPIO_OUT,
  70 };
  71
  72 static const struct imxuart_platform_data uart_pdata __initconst = {
  73         .flags = IMXUART_HAVE_RTSCTS,
  74 };
  75
  76 /*
  77  * Matrix keyboard
  78  */
  79
  80 static const uint32_t mx27_3ds_keymap[] = {
  81         KEY(0, 0, KEY_UP),
  82         KEY(0, 1, KEY_DOWN),
  83         KEY(1, 0, KEY_RIGHT),
  84         KEY(1, 1, KEY_LEFT),
  85         KEY(1, 2, KEY_ENTER),
  86         KEY(2, 0, KEY_F6),
  87         KEY(2, 1, KEY_F8),
  88         KEY(2, 2, KEY_F9),
  89         KEY(2, 3, KEY_F10),
  90 };
  91
  92 static const struct matrix_keymap_data mx27_3ds_keymap_data __initconst = {
  93         .keymap         = mx27_3ds_keymap,
  94         .keymap_size    = ARRAY_SIZE(mx27_3ds_keymap),
  95 };
  96
  97 static int mx27_3ds_sdhc1_init(struct device *dev, irq_handler_t detect_irq,
  98                                 void *data)
  99 {
 100         return request_irq(IRQ_GPIOB(26), detect_irq, IRQF_TRIGGER_FALLING |
 101                         IRQF_TRIGGER_RISING, "sdhc1-card-detect", data);
 102 }
 103
 104 static void mx27_3ds_sdhc1_exit(struct device *dev, void *data)
 105 {
 106         free_irq(IRQ_GPIOB(26), data);
 107 }
 108
 109 static const struct imxmmc_platform_data sdhc1_pdata __initconst = {
 110         .init = mx27_3ds_sdhc1_init,
 111         .exit = mx27_3ds_sdhc1_exit,
 112 };
 113
 114 static void mx27_3ds_sdhc1_enable_level_translator(void)
 115 {
 116         /* Turn on TXB0108 OE pin */
 117         gpio_request(SD1_EN_GPIO, "sd1_enable");
 118         gpio_direction_output(SD1_EN_GPIO, 1);
 119 }
 120
 121 static void __init mx27pdk_init(void)
 122 {
 123         mxc_gpio_setup_multiple_pins(mx27pdk_pins, ARRAY_SIZE(mx27pdk_pins),
 124                 "mx27pdk");
 125         mx27_3ds_sdhc1_enable_level_translator();
 126         imx27_add_imx_uart0(&uart_pdata);
 127         imx27_add_fec(NULL);
 128         imx27_add_imx_keypad(&mx27_3ds_keymap_data);
 129         imx27_add_mxc_mmc(0, &sdhc1_pdata);
 130         imx27_add_imx2_wdt(NULL);
 131 }
 132
 133 static void __init mx27pdk_timer_init(void)
 134 {
 135         mx27_clocks_init(26000000);
 136 }
 137
 138 static struct sys_timer mx27pdk_timer = {
 139         .init   = mx27pdk_timer_init,
 140 };
 141
 142 MACHINE_START(MX27_3DS, "Freescale MX27PDK")
 143         /* maintainer: Freescale Semiconductor, Inc. */
 144         .boot_params    = MX27_PHYS_OFFSET + 0x100,
 145         .map_io         = mx27_map_io,
 146         .init_irq       = mx27_init_irq,
 147         .init_machine   = mx27pdk_init,
 148         .timer          = &mx27pdk_timer,
 149 MACHINE_END