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
  24 #include <linux/i2c/twl4030.h>
  25
  26 #include <linux/spi/spi.h>
  27 #include <linux/spi/ads7846.h>
  28
  29 #include <mach/hardware.h>
  30 #include <asm/mach-types.h>
  31 #include <asm/mach/arch.h>
  32 #include <asm/mach/map.h>
  33
  34 #include <mach/gpio.h>
  35 #include <mach/keypad.h>
  36 #include <mach/board.h>
  37 #include <mach/hsmmc.h>
  38 #include <mach/usb-musb.h>
  39 #include <mach/usb-ehci.h>
  40 #include <mach/common.h>
  41 #include <mach/mcspi.h>
  42
  43 #include "sdram-micron-mt46h32m32lf-6.h"
  44
  45 static struct resource omap3evm_smc911x_resources[] = {
  46         [0] =   {
  47                 .start  = OMAP3EVM_ETHR_START,
  48                 .end    = (OMAP3EVM_ETHR_START + OMAP3EVM_ETHR_SIZE - 1),
  49                 .flags  = IORESOURCE_MEM,
  50         },
  51         [1] =   {
  52                 .start  = OMAP_GPIO_IRQ(OMAP3EVM_ETHR_GPIO_IRQ),
  53                 .end    = OMAP_GPIO_IRQ(OMAP3EVM_ETHR_GPIO_IRQ),
  54                 .flags  = IORESOURCE_IRQ,
  55         },
  56 };
  57
  58 static struct platform_device omap3evm_smc911x_device = {
  59         .name           = "smc911x",
  60         .id             = -1,
  61         .num_resources  = ARRAY_SIZE(omap3evm_smc911x_resources),
  62         .resource       = &omap3evm_smc911x_resources [0],
  63 };
  64
  65 static inline void __init omap3evm_init_smc911x(void)
  66 {
  67         int eth_cs;
  68         struct clk *l3ck;
  69         unsigned int rate;
  70
  71         eth_cs = OMAP3EVM_SMC911X_CS;
  72
  73         l3ck = clk_get(NULL, "l3_ck");
  74         if (IS_ERR(l3ck))
  75                 rate = 100000000;
  76         else
  77                 rate = clk_get_rate(l3ck);
  78
  79         if (omap_request_gpio(OMAP3EVM_ETHR_GPIO_IRQ) < 0) {
  80                 printk(KERN_ERR "Failed to request GPIO%d for smc911x IRQ\n",
  81                         OMAP3EVM_ETHR_GPIO_IRQ);
  82                 return;
  83         }
  84
  85         omap_set_gpio_direction(OMAP3EVM_ETHR_GPIO_IRQ, 1);
  86 }
  87
  88 static struct omap_uart_config omap3_evm_uart_config __initdata = {
  89         .enabled_uarts  = ((1 << 0) | (1 << 1) | (1 << 2)),
  90 };
  91
  92 static struct twl4030_platform_data omap3evm_twldata = {
  93         .irq_base       = TWL4030_IRQ_BASE,
  94         .irq_end        = TWL4030_IRQ_END,
  95 };
  96
  97 static struct i2c_board_info __initdata omap3evm_i2c_boardinfo[] = {
  98         {
  99                 I2C_BOARD_INFO("twl4030", 0x48),
 100                 .flags = I2C_CLIENT_WAKE,
 101                 .irq = INT_34XX_SYS_NIRQ,
 102                 .platform_data = &omap3evm_twldata,
 103         },
 104 };
 105
 106 static int __init omap3_evm_i2c_init(void)
 107 {
 108         omap_register_i2c_bus(1, 2600, omap3evm_i2c_boardinfo,
 109                         ARRAY_SIZE(omap3evm_i2c_boardinfo));
 110         omap_register_i2c_bus(2, 400, NULL, 0);
 111         omap_register_i2c_bus(3, 400, NULL, 0);
 112         return 0;
 113 }
 114
 115 static struct platform_device omap3_evm_lcd_device = {
 116         .name           = "omap3evm_lcd",
 117         .id             = -1,
 118 };
 119
 120 static struct omap_lcd_config omap3_evm_lcd_config __initdata = {
 121         .ctrl_name      = "internal",
 122 };
 123
 124 static void ads7846_dev_init(void)
 125 {
 126         if (omap_request_gpio(OMAP3_EVM_TS_GPIO) < 0)
 127                 printk(KERN_ERR "can't get ads7846 pen down GPIO\n");
 128
 129         omap_set_gpio_direction(OMAP3_EVM_TS_GPIO, 1);
 130
 131         omap_set_gpio_debounce(OMAP3_EVM_TS_GPIO, 1);
 132         omap_set_gpio_debounce_time(OMAP3_EVM_TS_GPIO, 0xa);
 133 }
 134
 135 static int ads7846_get_pendown_state(void)
 136 {
 137         return !omap_get_gpio_datain(OMAP3_EVM_TS_GPIO);
 138 }
 139
 140 struct ads7846_platform_data ads7846_config = {
 141         .x_max                  = 0x0fff,
 142         .y_max                  = 0x0fff,
 143         .x_plate_ohms           = 180,
 144         .pressure_max           = 255,
 145         .debounce_max           = 10,
 146         .debounce_tol           = 3,
 147         .debounce_rep           = 1,
 148         .get_pendown_state      = ads7846_get_pendown_state,
 149         .keep_vref_on           = 1,
 150         .settle_delay_usecs     = 150,
 151 };
 152
 153 static struct omap2_mcspi_device_config ads7846_mcspi_config = {
 154         .turbo_mode     = 0,
 155         .single_channel = 1,  /* 0: slave, 1: master */
 156 };
 157
 158 struct spi_board_info omap3evm_spi_board_info[] = {
 159         [0] = {
 160                 .modalias               = "ads7846",
 161                 .bus_num                = 1,
 162                 .chip_select            = 0,
 163                 .max_speed_hz           = 1500000,
 164                 .controller_data        = &ads7846_mcspi_config,
 165                 .irq                    = OMAP_GPIO_IRQ(OMAP3_EVM_TS_GPIO),
 166                 .platform_data          = &ads7846_config,
 167         },
 168 };
 169
 170 static int omap3evm_keymap[] = {
 171         KEY(0, 0, KEY_LEFT),
 172         KEY(0, 1, KEY_RIGHT),
 173         KEY(0, 2, KEY_A),
 174         KEY(0, 3, KEY_B),
 175         KEY(1, 0, KEY_DOWN),
 176         KEY(1, 1, KEY_UP),
 177         KEY(1, 2, KEY_E),
 178         KEY(1, 3, KEY_F),
 179         KEY(2, 0, KEY_ENTER),
 180         KEY(2, 1, KEY_I),
 181         KEY(2, 2, KEY_J),
 182         KEY(2, 3, KEY_K),
 183         KEY(3, 0, KEY_M),
 184         KEY(3, 1, KEY_N),
 185         KEY(3, 2, KEY_O),
 186         KEY(3, 3, KEY_P)
 187 };
 188
 189 static struct omap_kp_platform_data omap3evm_kp_data = {
 190         .rows           = 4,
 191         .cols           = 4,
 192         .keymap         = omap3evm_keymap,
 193         .keymapsize     = ARRAY_SIZE(omap3evm_keymap),
 194         .rep            = 1,
 195 };
 196
 197 static struct platform_device omap3evm_kp_device = {
 198         .name           = "omap_twl4030keypad",
 199         .id             = -1,
 200         .dev            = {
 201                                 .platform_data = &omap3evm_kp_data,
 202                         },
 203 };
 204
 205 static void __init omap3_evm_init_irq(void)
 206 {
 207         omap2_init_common_hw(mt46h32m32lf6_sdrc_params);
 208         omap_init_irq();
 209         omap_gpio_init();
 210         omap3evm_init_smc911x();
 211 }
 212
 213 static struct omap_board_config_kernel omap3_evm_config[] __initdata = {
 214         { OMAP_TAG_UART,        &omap3_evm_uart_config },
 215         { OMAP_TAG_LCD,         &omap3_evm_lcd_config },
 216 };
 217
 218 static struct platform_device *omap3_evm_devices[] __initdata = {
 219         &omap3_evm_lcd_device,
 220         &omap3evm_kp_device,
 221         &omap3evm_smc911x_device,
 222 };
 223
 224 static void __init omap3_evm_init(void)
 225 {
 226         omap3_evm_i2c_init();
 227
 228         platform_add_devices(omap3_evm_devices, ARRAY_SIZE(omap3_evm_devices));
 229         omap_board_config = omap3_evm_config;
 230         omap_board_config_size = ARRAY_SIZE(omap3_evm_config);
 231
 232         spi_register_board_info(omap3evm_spi_board_info,
 233                                 ARRAY_SIZE(omap3evm_spi_board_info));
 234
 235         omap_serial_init();
 236         hsmmc_init();
 237         usb_musb_init();
 238         usb_ehci_init();
 239         omap3evm_flash_init();
 240         ads7846_dev_init();
 241 }
 242
 243 static void __init omap3_evm_map_io(void)
 244 {
 245         omap2_set_globals_343x();
 246         omap2_map_common_io();
 247 }
 248
 249 MACHINE_START(OMAP3EVM, "OMAP3 EVM")
 250         /* Maintainer: Syed Mohammed Khasim - Texas Instruments */
 251         .phys_io        = 0x48000000,
 252         .io_pg_offst    = ((0xd8000000) >> 18) & 0xfffc,
 253         .boot_params    = 0x80000100,
 254         .map_io         = omap3_evm_map_io,
 255         .init_irq       = omap3_evm_init_irq,
 256         .init_machine   = omap3_evm_init,
 257         .timer          = &omap_timer,
 258 MACHINE_END