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/input.h>
  23 #include <linux/spi/spi.h>
  24 #include <linux/spi/ads7846.h>
  25
  26 #include <asm/hardware.h>
  27 #include <asm/mach-types.h>
  28 #include <asm/mach/arch.h>
  29 #include <asm/mach/map.h>
  30
  31 #include <asm/arch/gpio.h>
  32 #include <asm/arch/keypad.h>
  33 #include <asm/arch/board.h>
  34 #include <asm/arch/hsmmc.h>
  35 #include <asm/arch/usb-musb.h>
  36 #include <asm/arch/usb-ehci.h>
  37 #include <asm/arch/common.h>
  38 #include <asm/arch/mcspi.h>
  39
  40 static struct resource omap3evm_smc911x_resources[] = {
  41         [0] =   {
  42                 .start  = OMAP3EVM_ETHR_START,
  43                 .end    = (OMAP3EVM_ETHR_START + OMAP3EVM_ETHR_SIZE - 1),
  44                 .flags  = IORESOURCE_MEM,
  45         },
  46         [1] =   {
  47                 .start  = OMAP_GPIO_IRQ(OMAP3EVM_ETHR_GPIO_IRQ),
  48                 .end    = OMAP_GPIO_IRQ(OMAP3EVM_ETHR_GPIO_IRQ),
  49                 .flags  = IORESOURCE_IRQ,
  50         },
  51 };
  52
  53 static struct platform_device omap3evm_smc911x_device = {
  54         .name           = "smc911x",
  55         .id             = -1,
  56         .num_resources  = ARRAY_SIZE(omap3evm_smc911x_resources),
  57         .resource       = &omap3evm_smc911x_resources [0],
  58 };
  59
  60 static inline void __init omap3evm_init_smc911x(void)
  61 {
  62         int eth_cs;
  63         struct clk *l3ck;
  64         unsigned int rate;
  65
  66         eth_cs = OMAP3EVM_SMC911X_CS;
  67
  68         l3ck = clk_get(NULL, "l3_ck");
  69         if (IS_ERR(l3ck))
  70                 rate = 100000000;
  71         else
  72                 rate = clk_get_rate(l3ck);
  73
  74         if (omap_request_gpio(OMAP3EVM_ETHR_GPIO_IRQ) < 0) {
  75                 printk(KERN_ERR "Failed to request GPIO%d for smc911x IRQ\n",
  76                         OMAP3EVM_ETHR_GPIO_IRQ);
  77                 return;
  78         }
  79
  80         omap_set_gpio_direction(OMAP3EVM_ETHR_GPIO_IRQ, 1);
  81 }
  82
  83 static struct omap_uart_config omap3_evm_uart_config __initdata = {
  84         .enabled_uarts  = ((1 << 0) | (1 << 1) | (1 << 2)),
  85 };
  86
  87 static int __init omap3_evm_i2c_init(void)
  88 {
  89         omap_register_i2c_bus(1, 2600, NULL, 0);
  90         omap_register_i2c_bus(2, 400, NULL, 0);
  91         omap_register_i2c_bus(3, 400, NULL, 0);
  92         return 0;
  93 }
  94
  95 static struct omap_mmc_config omap3_evm_mmc_config __initdata = {
  96         .mmc [0] = {
  97                 .enabled        = 1,
  98                 .wire4          = 1,
  99         },
 100 };
 101
 102 static struct platform_device omap3_evm_lcd_device = {
 103         .name           = "omap3evm_lcd",
 104         .id             = -1,
 105 };
 106
 107 static struct omap_lcd_config omap3_evm_lcd_config __initdata = {
 108         .ctrl_name      = "internal",
 109 };
 110
 111 static struct platform_device omap3_evm_twl4030rtc_device = {
 112         .name           = "twl4030_rtc",
 113         .id             = -1,
 114 };
 115
 116 static void ads7846_dev_init(void)
 117 {
 118         if (omap_request_gpio(OMAP3_EVM_TS_GPIO) < 0)
 119                 printk(KERN_ERR "can't get ads7846 pen down GPIO\n");
 120
 121         omap_set_gpio_direction(OMAP3_EVM_TS_GPIO, 1);
 122
 123         omap_set_gpio_debounce(OMAP3_EVM_TS_GPIO, 1);
 124         omap_set_gpio_debounce_time(OMAP3_EVM_TS_GPIO, 0xa);
 125 }
 126
 127 static int ads7846_get_pendown_state(void)
 128 {
 129         return !omap_get_gpio_datain(OMAP3_EVM_TS_GPIO);
 130 }
 131
 132 struct ads7846_platform_data ads7846_config = {
 133         .get_pendown_state      = ads7846_get_pendown_state,
 134         .keep_vref_on           = 1,
 135 };
 136
 137 static struct omap2_mcspi_device_config ads7846_mcspi_config = {
 138         .turbo_mode     = 0,
 139         .single_channel = 1,  /* 0: slave, 1: master */
 140 };
 141
 142 struct spi_board_info omap3evm_spi_board_info[] = {
 143         [0] = {
 144                 .modalias               = "ads7846",
 145                 .bus_num                = 1,
 146                 .chip_select            = 0,
 147                 .max_speed_hz           = 1500000,
 148                 .controller_data        = &ads7846_mcspi_config,
 149                 .irq                    = OMAP_GPIO_IRQ(OMAP3_EVM_TS_GPIO),
 150                 .platform_data          = &ads7846_config,
 151         },
 152 };
 153
 154 static int omap3evm_keymap[] = {
 155         KEY(0, 0, KEY_LEFT),
 156         KEY(0, 1, KEY_RIGHT),
 157         KEY(0, 2, KEY_A),
 158         KEY(0, 3, KEY_B),
 159         KEY(1, 0, KEY_DOWN),
 160         KEY(1, 1, KEY_UP),
 161         KEY(1, 2, KEY_E),
 162         KEY(1, 3, KEY_F),
 163         KEY(2, 0, KEY_ENTER),
 164         KEY(2, 1, KEY_I),
 165         KEY(2, 2, KEY_J),
 166         KEY(2, 3, KEY_K),
 167         KEY(3, 0, KEY_M),
 168         KEY(3, 1, KEY_N),
 169         KEY(3, 2, KEY_O),
 170         KEY(3, 3, KEY_P)
 171 };
 172
 173 static struct omap_kp_platform_data omap3evm_kp_data = {
 174         .rows           = 4,
 175         .cols           = 4,
 176         .keymap         = omap3evm_keymap,
 177         .keymapsize     = ARRAY_SIZE(omap3evm_keymap),
 178         .rep            = 1,
 179 };
 180
 181 static struct platform_device omap3evm_kp_device = {
 182         .name           = "omap_twl4030keypad",
 183         .id             = -1,
 184         .dev            = {
 185                                 .platform_data = &omap3evm_kp_data,
 186                         },
 187 };
 188
 189 static void __init omap3_evm_init_irq(void)
 190 {
 191         omap2_init_common_hw(NULL);
 192         omap_init_irq();
 193         omap_gpio_init();
 194         omap3evm_init_smc911x();
 195 }
 196
 197 static struct omap_board_config_kernel omap3_evm_config[] __initdata = {
 198         { OMAP_TAG_UART,        &omap3_evm_uart_config },
 199         { OMAP_TAG_MMC,         &omap3_evm_mmc_config },
 200         { OMAP_TAG_LCD,         &omap3_evm_lcd_config },
 201 };
 202
 203 static struct platform_device *omap3_evm_devices[] __initdata = {
 204         &omap3_evm_lcd_device,
 205         &omap3evm_kp_device,
 206 #ifdef CONFIG_RTC_DRV_TWL4030
 207         &omap3_evm_twl4030rtc_device,
 208 #endif
 209         &omap3evm_smc911x_device,
 210 };
 211
 212 static void __init omap3_evm_init(void)
 213 {
 214         platform_add_devices(omap3_evm_devices, ARRAY_SIZE(omap3_evm_devices));
 215         omap_board_config = omap3_evm_config;
 216         omap_board_config_size = ARRAY_SIZE(omap3_evm_config);
 217
 218         spi_register_board_info(omap3evm_spi_board_info,
 219                                 ARRAY_SIZE(omap3evm_spi_board_info));
 220
 221         omap_serial_init();
 222         hsmmc_init();
 223         usb_musb_init();
 224         usb_ehci_init();
 225         omap3evm_flash_init();
 226         ads7846_dev_init();
 227 }
 228
 229 arch_initcall(omap3_evm_i2c_init);
 230
 231 static void __init omap3_evm_map_io(void)
 232 {
 233         omap2_set_globals_343x();
 234         omap2_map_common_io();
 235 }
 236
 237 MACHINE_START(OMAP3EVM, "OMAP3 EVM")
 238         /* Maintainer: Syed Mohammed Khasim - Texas Instruments */
 239         .phys_io        = 0x48000000,
 240         .io_pg_offst    = ((0xd8000000) >> 18) & 0xfffc,
 241         .boot_params    = 0x80000100,
 242         .map_io         = omap3_evm_map_io,
 243         .init_irq       = omap3_evm_init_irq,
 244         .init_machine   = omap3_evm_init,
 245         .timer          = &omap_timer,
 246 MACHINE_END