arch/arm/mach-omap2/board-omap3evm.c

   1 /*
   2  * linux/arch/arm/mach-omap2/board-omap3evm.c
   3  *
   4  * Copyright (C) 2008 Texas Instruments
   5  *
   6  * Modified from mach-omap2/board-3430sdp.c
   7  *
   8  * Initial code: Syed Mohammed Khasim
   9  *
  10  * This program is free software; you can redistribute it and/or modify
  11  * it under the terms of the GNU General Public License version 2 as
  12  * published by the Free Software Foundation.
  13  */
  14
  15 #include <linux/kernel.h>
  16 #include <linux/init.h>
  17 #include <linux/platform_device.h>
  18 #include <linux/delay.h>
  19 #include <linux/err.h>
  20 #include <linux/clk.h>
  21 #include <linux/io.h>
  22 #include <linux/spi/spi.h>
  23 #include <linux/spi/ads7846.h>
  24
  25 #include <asm/hardware.h>
  26 #include <asm/mach-types.h>
  27 #include <asm/mach/arch.h>
  28 #include <asm/mach/map.h>
  29
  30 #include <asm/arch/gpio.h>
  31 #include <asm/arch/board.h>
  32 #include <asm/arch/hsmmc.h>
  33 #include <asm/arch/usb-musb.h>
  34 #include <asm/arch/usb-ehci.h>
  35 #include <asm/arch/common.h>
  36 #include <asm/arch/mcspi.h>
  37
  38 static struct omap_uart_config omap3_evm_uart_config __initdata = {
  39         .enabled_uarts  = ((1 << 0) | (1 << 1) | (1 << 2)),
  40 };
  41
  42 static int __init omap3_evm_i2c_init(void)
  43 {
  44         omap_register_i2c_bus(1, 2600, NULL, 0);
  45         omap_register_i2c_bus(2, 400, NULL, 0);
  46         omap_register_i2c_bus(3, 400, NULL, 0);
  47         return 0;
  48 }
  49
  50 static struct omap_mmc_config omap3_evm_mmc_config __initdata = {
  51         .mmc [0] = {
  52                 .enabled        = 1,
  53                 .wire4          = 1,
  54         },
  55 };
  56
  57 static struct platform_device omap3_evm_lcd_device = {
  58         .name           = "omap3evm_lcd",
  59         .id             = -1,
  60 };
  61
  62 static struct omap_lcd_config omap3_evm_lcd_config __initdata = {
  63         .ctrl_name      = "internal",
  64 };
  65
  66 static struct platform_device omap3_evm_twl4030rtc_device = {
  67         .name           = "twl4030_rtc",
  68         .id             = -1,
  69 };
  70
  71 static void ads7846_dev_init(void)
  72 {
  73         if (omap_request_gpio(OMAP3_EVM_TS_GPIO) < 0)
  74                 printk(KERN_ERR "can't get ads7846 pen down GPIO\n");
  75
  76         omap_set_gpio_direction(OMAP3_EVM_TS_GPIO, 1);
  77
  78         omap_set_gpio_debounce(OMAP3_EVM_TS_GPIO, 1);
  79         omap_set_gpio_debounce_time(OMAP3_EVM_TS_GPIO, 0xa);
  80 }
  81
  82 static int ads7846_get_pendown_state(void)
  83 {
  84         return !omap_get_gpio_datain(OMAP3_EVM_TS_GPIO);
  85 }
  86
  87 struct ads7846_platform_data ads7846_config = {
  88         .get_pendown_state      = ads7846_get_pendown_state,
  89         .keep_vref_on           = 1,
  90 };
  91
  92 static struct omap2_mcspi_device_config ads7846_mcspi_config = {
  93         .turbo_mode     = 0,
  94         .single_channel = 1,  /* 0: slave, 1: master */
  95 };
  96
  97 struct spi_board_info omap3evm_spi_board_info[] = {
  98         [0] = {
  99                 .modalias               = "ads7846",
 100                 .bus_num                = 1,
 101                 .chip_select            = 0,
 102                 .max_speed_hz           = 1500000,
 103                 .controller_data        = &ads7846_mcspi_config,
 104                 .irq                    = OMAP_GPIO_IRQ(OMAP3_EVM_TS_GPIO),
 105                 .platform_data          = &ads7846_config,
 106         },
 107 };
 108
 109 static void __init omap3_evm_init_irq(void)
 110 {
 111         omap2_init_common_hw();
 112         omap_init_irq();
 113         omap_gpio_init();
 114 }
 115
 116 static struct omap_board_config_kernel omap3_evm_config[] __initdata = {
 117         { OMAP_TAG_UART,        &omap3_evm_uart_config },
 118         { OMAP_TAG_MMC,         &omap3_evm_mmc_config },
 119         { OMAP_TAG_LCD,         &omap3_evm_lcd_config },
 120 };
 121
 122 static struct platform_device *omap3_evm_devices[] __initdata = {
 123         &omap3_evm_lcd_device,
 124 #ifdef CONFIG_RTC_DRV_TWL4030
 125         &omap3_evm_twl4030rtc_device,
 126 #endif
 127 };
 128
 129 static void __init omap3_evm_init(void)
 130 {
 131         platform_add_devices(omap3_evm_devices, ARRAY_SIZE(omap3_evm_devices));
 132         omap_board_config = omap3_evm_config;
 133         omap_board_config_size = ARRAY_SIZE(omap3_evm_config);
 134
 135         spi_register_board_info(omap3evm_spi_board_info,
 136                                 ARRAY_SIZE(omap3evm_spi_board_info));
 137
 138         omap_serial_init();
 139         hsmmc_init();
 140         usb_musb_init();
 141         usb_ehci_init();
 142         omap3evm_flash_init();
 143         ads7846_dev_init();
 144 }
 145
 146 arch_initcall(omap3_evm_i2c_init);
 147
 148 static void __init omap3_evm_map_io(void)
 149 {
 150         omap2_set_globals_343x();
 151         omap2_map_common_io();
 152 }
 153
 154 MACHINE_START(OMAP3EVM, "OMAP3 EVM")
 155         /* Maintainer: Syed Mohammed Khasim - Texas Instruments */
 156         .phys_io        = 0x48000000,
 157         .io_pg_offst    = ((0xd8000000) >> 18) & 0xfffc,
 158         .boot_params    = 0x80000100,
 159         .map_io         = omap3_evm_map_io,
 160         .init_irq       = omap3_evm_init_irq,
 161         .init_machine   = omap3_evm_init,
 162         .timer          = &omap_timer,
 163 MACHINE_END