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 #include "sdram-micron-mt46h32m32lf-6.h"
  41
  42 static struct resource omap3evm_smc911x_resources[] = {
  43         [0] =   {
  44                 .start  = OMAP3EVM_ETHR_START,
  45                 .end    = (OMAP3EVM_ETHR_START + OMAP3EVM_ETHR_SIZE - 1),
  46                 .flags  = IORESOURCE_MEM,
  47         },
  48         [1] =   {
  49                 .start  = OMAP_GPIO_IRQ(OMAP3EVM_ETHR_GPIO_IRQ),
  50                 .end    = OMAP_GPIO_IRQ(OMAP3EVM_ETHR_GPIO_IRQ),
  51                 .flags  = IORESOURCE_IRQ,
  52         },
  53 };
  54
  55 static struct platform_device omap3evm_smc911x_device = {
  56         .name           = "smc911x",
  57         .id             = -1,
  58         .num_resources  = ARRAY_SIZE(omap3evm_smc911x_resources),
  59         .resource       = &omap3evm_smc911x_resources [0],
  60 };
  61
  62 static inline void __init omap3evm_init_smc911x(void)
  63 {
  64         int eth_cs;
  65         struct clk *l3ck;
  66         unsigned int rate;
  67
  68         eth_cs = OMAP3EVM_SMC911X_CS;
  69
  70         l3ck = clk_get(NULL, "l3_ck");
  71         if (IS_ERR(l3ck))
  72                 rate = 100000000;
  73         else
  74                 rate = clk_get_rate(l3ck);
  75
  76         if (omap_request_gpio(OMAP3EVM_ETHR_GPIO_IRQ) < 0) {
  77                 printk(KERN_ERR "Failed to request GPIO%d for smc911x IRQ\n",
  78                         OMAP3EVM_ETHR_GPIO_IRQ);
  79                 return;
  80         }
  81
  82         omap_set_gpio_direction(OMAP3EVM_ETHR_GPIO_IRQ, 1);
  83 }
  84
  85 static struct omap_uart_config omap3_evm_uart_config __initdata = {
  86         .enabled_uarts  = ((1 << 0) | (1 << 1) | (1 << 2)),
  87 };
  88
  89 static int __init omap3_evm_i2c_init(void)
  90 {
  91         omap_register_i2c_bus(1, 2600, NULL, 0);
  92         omap_register_i2c_bus(2, 400, NULL, 0);
  93         omap_register_i2c_bus(3, 400, NULL, 0);
  94         return 0;
  95 }
  96
  97 static struct omap_mmc_config omap3_evm_mmc_config __initdata = {
  98         .mmc [0] = {
  99                 .enabled        = 1,
 100                 .wire4          = 1,
 101         },
 102 };
 103
 104 static struct platform_device omap3_evm_lcd_device = {
 105         .name           = "omap3evm_lcd",
 106         .id             = -1,
 107 };
 108
 109 static struct omap_lcd_config omap3_evm_lcd_config __initdata = {
 110         .ctrl_name      = "internal",
 111 };
 112
 113 static struct platform_device omap3_evm_twl4030rtc_device = {
 114         .name           = "twl4030_rtc",
 115         .id             = -1,
 116 };
 117
 118 static void ads7846_dev_init(void)
 119 {
 120         if (omap_request_gpio(OMAP3_EVM_TS_GPIO) < 0)
 121                 printk(KERN_ERR "can't get ads7846 pen down GPIO\n");
 122
 123         omap_set_gpio_direction(OMAP3_EVM_TS_GPIO, 1);
 124
 125         omap_set_gpio_debounce(OMAP3_EVM_TS_GPIO, 1);
 126         omap_set_gpio_debounce_time(OMAP3_EVM_TS_GPIO, 0xa);
 127 }
 128
 129 static int ads7846_get_pendown_state(void)
 130 {
 131         return !omap_get_gpio_datain(OMAP3_EVM_TS_GPIO);
 132 }
 133
 134 struct ads7846_platform_data ads7846_config = {
 135         .get_pendown_state      = ads7846_get_pendown_state,
 136         .keep_vref_on           = 1,
 137 };
 138
 139 static struct omap2_mcspi_device_config ads7846_mcspi_config = {
 140         .turbo_mode     = 0,
 141         .single_channel = 1,  /* 0: slave, 1: master */
 142 };
 143
 144 struct spi_board_info omap3evm_spi_board_info[] = {
 145         [0] = {
 146                 .modalias               = "ads7846",
 147                 .bus_num                = 1,
 148                 .chip_select            = 0,
 149                 .max_speed_hz           = 1500000,
 150                 .controller_data        = &ads7846_mcspi_config,
 151                 .irq                    = OMAP_GPIO_IRQ(OMAP3_EVM_TS_GPIO),
 152                 .platform_data          = &ads7846_config,
 153         },
 154 };
 155
 156 static int omap3evm_keymap[] = {
 157         KEY(0, 0, KEY_LEFT),
 158         KEY(0, 1, KEY_RIGHT),
 159         KEY(0, 2, KEY_A),
 160         KEY(0, 3, KEY_B),
 161         KEY(1, 0, KEY_DOWN),
 162         KEY(1, 1, KEY_UP),
 163         KEY(1, 2, KEY_E),
 164         KEY(1, 3, KEY_F),
 165         KEY(2, 0, KEY_ENTER),
 166         KEY(2, 1, KEY_I),
 167         KEY(2, 2, KEY_J),
 168         KEY(2, 3, KEY_K),
 169         KEY(3, 0, KEY_M),
 170         KEY(3, 1, KEY_N),
 171         KEY(3, 2, KEY_O),
 172         KEY(3, 3, KEY_P)
 173 };
 174
 175 static struct omap_kp_platform_data omap3evm_kp_data = {
 176         .rows           = 4,
 177         .cols           = 4,
 178         .keymap         = omap3evm_keymap,
 179         .keymapsize     = ARRAY_SIZE(omap3evm_keymap),
 180         .rep            = 1,
 181 };
 182
 183 static struct platform_device omap3evm_kp_device = {
 184         .name           = "omap_twl4030keypad",
 185         .id             = -1,
 186         .dev            = {
 187                                 .platform_data = &omap3evm_kp_data,
 188                         },
 189 };
 190
 191 static void __init omap3_evm_init_irq(void)
 192 {
 193         omap2_init_common_hw(mt46h32m32lf6_sdrc_params);
 194         omap_init_irq();
 195         omap_gpio_init();
 196         omap3evm_init_smc911x();
 197 }
 198
 199 static struct omap_board_config_kernel omap3_evm_config[] __initdata = {
 200         { OMAP_TAG_UART,        &omap3_evm_uart_config },
 201         { OMAP_TAG_MMC,         &omap3_evm_mmc_config },
 202         { OMAP_TAG_LCD,         &omap3_evm_lcd_config },
 203 };
 204
 205 static struct platform_device *omap3_evm_devices[] __initdata = {
 206         &omap3_evm_lcd_device,
 207         &omap3evm_kp_device,
 208 #ifdef CONFIG_RTC_DRV_TWL4030
 209         &omap3_evm_twl4030rtc_device,
 210 #endif
 211         &omap3evm_smc911x_device,
 212 };
 213
 214 static void __init omap3_evm_init(void)
 215 {
 216         platform_add_devices(omap3_evm_devices, ARRAY_SIZE(omap3_evm_devices));
 217         omap_board_config = omap3_evm_config;
 218         omap_board_config_size = ARRAY_SIZE(omap3_evm_config);
 219
 220         spi_register_board_info(omap3evm_spi_board_info,
 221                                 ARRAY_SIZE(omap3evm_spi_board_info));
 222
 223         omap_serial_init();
 224         hsmmc_init();
 225         usb_musb_init();
 226         usb_ehci_init();
 227         omap3evm_flash_init();
 228         ads7846_dev_init();
 229 }
 230
 231 arch_initcall(omap3_evm_i2c_init);
 232
 233 static void __init omap3_evm_map_io(void)
 234 {
 235         omap2_set_globals_343x();
 236         omap2_map_common_io();
 237 }
 238
 239 MACHINE_START(OMAP3EVM, "OMAP3 EVM")
 240         /* Maintainer: Syed Mohammed Khasim - Texas Instruments */
 241         .phys_io        = 0x48000000,
 242         .io_pg_offst    = ((0xd8000000) >> 18) & 0xfffc,
 243         .boot_params    = 0x80000100,
 244         .map_io         = omap3_evm_map_io,
 245         .init_irq       = omap3_evm_init_irq,
 246         .init_machine   = omap3_evm_init,
 247         .timer          = &omap_timer,
 248 MACHINE_END