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/input/matrix_keypad.h>
  26 #include <linux/irq.h>
  27 #include <asm/mach-types.h>
  28 #include <asm/mach/arch.h>
  29 #include <asm/mach/time.h>
  30 #include <mach/hardware.h>
  31 #include <mach/common.h>
  32 #include <mach/iomux-mx27.h>
  33 #include <mach/mmc.h>
  34
  35 #include "devices-imx27.h"
  36 #include "devices.h"
  37
  38 #define SD1_EN_GPIO (GPIO_PORTB + 25)
  39
  40 static const int mx27pdk_pins[] __initconst = {
  41         /* UART1 */
  42         PE12_PF_UART1_TXD,
  43         PE13_PF_UART1_RXD,
  44         PE14_PF_UART1_CTS,
  45         PE15_PF_UART1_RTS,
  46         /* FEC */
  47         PD0_AIN_FEC_TXD0,
  48         PD1_AIN_FEC_TXD1,
  49         PD2_AIN_FEC_TXD2,
  50         PD3_AIN_FEC_TXD3,
  51         PD4_AOUT_FEC_RX_ER,
  52         PD5_AOUT_FEC_RXD1,
  53         PD6_AOUT_FEC_RXD2,
  54         PD7_AOUT_FEC_RXD3,
  55         PD8_AF_FEC_MDIO,
  56         PD9_AIN_FEC_MDC,
  57         PD10_AOUT_FEC_CRS,
  58         PD11_AOUT_FEC_TX_CLK,
  59         PD12_AOUT_FEC_RXD0,
  60         PD13_AOUT_FEC_RX_DV,
  61         PD14_AOUT_FEC_RX_CLK,
  62         PD15_AOUT_FEC_COL,
  63         PD16_AIN_FEC_TX_ER,
  64         PF23_AIN_FEC_TX_EN,
  65         /* SDHC1 */
  66         PE18_PF_SD1_D0,
  67         PE19_PF_SD1_D1,
  68         PE20_PF_SD1_D2,
  69         PE21_PF_SD1_D3,
  70         PE22_PF_SD1_CMD,
  71         PE23_PF_SD1_CLK,
  72         SD1_EN_GPIO | GPIO_GPIO | GPIO_OUT,
  73 };
  74
  75 static const struct imxuart_platform_data uart_pdata __initconst = {
  76         .flags = IMXUART_HAVE_RTSCTS,
  77 };
  78
  79 /*
  80  * Matrix keyboard
  81  */
  82
  83 static const uint32_t mx27_3ds_keymap[] = {
  84         KEY(0, 0, KEY_UP),
  85         KEY(0, 1, KEY_DOWN),
  86         KEY(1, 0, KEY_RIGHT),
  87         KEY(1, 1, KEY_LEFT),
  88         KEY(1, 2, KEY_ENTER),
  89         KEY(2, 0, KEY_F6),
  90         KEY(2, 1, KEY_F8),
  91         KEY(2, 2, KEY_F9),
  92         KEY(2, 3, KEY_F10),
  93 };
  94
  95 static struct matrix_keymap_data mx27_3ds_keymap_data = {
  96         .keymap         = mx27_3ds_keymap,
  97         .keymap_size    = ARRAY_SIZE(mx27_3ds_keymap),
  98 };
  99
 100 static int mx27_3ds_sdhc1_init(struct device *dev, irq_handler_t detect_irq,
 101                                 void *data)
 102 {
 103         return request_irq(IRQ_GPIOB(26), detect_irq, IRQF_TRIGGER_FALLING |
 104                         IRQF_TRIGGER_RISING, "sdhc1-card-detect", data);
 105 }
 106
 107 static void mx27_3ds_sdhc1_exit(struct device *dev, void *data)
 108 {
 109         free_irq(IRQ_GPIOB(26), data);
 110 }
 111
 112 static struct imxmmc_platform_data sdhc1_pdata = {
 113         .init = mx27_3ds_sdhc1_init,
 114         .exit = mx27_3ds_sdhc1_exit,
 115 };
 116
 117 static void mx27_3ds_sdhc1_enable_level_translator(void)
 118 {
 119         /* Turn on TXB0108 OE pin */
 120         gpio_request(SD1_EN_GPIO, "sd1_enable");
 121         gpio_direction_output(SD1_EN_GPIO, 1);
 122 }
 123
 124 static void __init mx27pdk_init(void)
 125 {
 126         mxc_gpio_setup_multiple_pins(mx27pdk_pins, ARRAY_SIZE(mx27pdk_pins),
 127                 "mx27pdk");
 128         mx27_3ds_sdhc1_enable_level_translator();
 129         imx27_add_imx_uart0(&uart_pdata);
 130         imx27_add_fec(NULL);
 131         mxc_register_device(&imx_kpp_device, &mx27_3ds_keymap_data);
 132         mxc_register_device(&mxc_sdhc_device0, &sdhc1_pdata);
 133 }
 134
 135 static void __init mx27pdk_timer_init(void)
 136 {
 137         mx27_clocks_init(26000000);
 138 }
 139
 140 static struct sys_timer mx27pdk_timer = {
 141         .init   = mx27pdk_timer_init,
 142 };
 143
 144 MACHINE_START(MX27_3DS, "Freescale MX27PDK")
 145         /* maintainer: Freescale Semiconductor, Inc. */
 146         .boot_params    = MX27_PHYS_OFFSET + 0x100,
 147         .map_io         = mx27_map_io,
 148         .init_irq       = mx27_init_irq,
 149         .init_machine   = mx27pdk_init,
 150         .timer          = &mx27pdk_timer,
 151 MACHINE_END