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 #include <linux/i2c/twl4030.h>
  29
  30 #include <mach/hardware.h>
  31 #include <asm/mach-types.h>
  32 #include <asm/mach/arch.h>
  33 #include <asm/mach/map.h>
  34
  35 #include <mach/gpio.h>
  36 #include <mach/keypad.h>
  37 #include <mach/board.h>
  38 #include <mach/hsmmc.h>
  39 #include <mach/usb-musb.h>
  40 #include <mach/usb-ehci.h>
  41 #include <mach/common.h>
  42 #include <mach/mcspi.h>
  43
  44 #include "sdram-micron-mt46h32m32lf-6.h"
  45
  46 static struct resource omap3evm_smc911x_resources[] = {
  47         [0] =   {
  48                 .start  = OMAP3EVM_ETHR_START,
  49                 .end    = (OMAP3EVM_ETHR_START + OMAP3EVM_ETHR_SIZE - 1),
  50                 .flags  = IORESOURCE_MEM,
  51         },
  52         [1] =   {
  53                 .start  = OMAP_GPIO_IRQ(OMAP3EVM_ETHR_GPIO_IRQ),
  54                 .end    = OMAP_GPIO_IRQ(OMAP3EVM_ETHR_GPIO_IRQ),
  55                 .flags  = IORESOURCE_IRQ,
  56         },
  57 };
  58
  59 static struct platform_device omap3evm_smc911x_device = {
  60         .name           = "smc911x",
  61         .id             = -1,
  62         .num_resources  = ARRAY_SIZE(omap3evm_smc911x_resources),
  63         .resource       = &omap3evm_smc911x_resources [0],
  64 };
  65
  66 static inline void __init omap3evm_init_smc911x(void)
  67 {
  68         int eth_cs;
  69         struct clk *l3ck;
  70         unsigned int rate;
  71
  72         eth_cs = OMAP3EVM_SMC911X_CS;
  73
  74         l3ck = clk_get(NULL, "l3_ck");
  75         if (IS_ERR(l3ck))
  76                 rate = 100000000;
  77         else
  78                 rate = clk_get_rate(l3ck);
  79
  80         if (omap_request_gpio(OMAP3EVM_ETHR_GPIO_IRQ) < 0) {
  81                 printk(KERN_ERR "Failed to request GPIO%d for smc911x IRQ\n",
  82                         OMAP3EVM_ETHR_GPIO_IRQ);
  83                 return;
  84         }
  85
  86         omap_set_gpio_direction(OMAP3EVM_ETHR_GPIO_IRQ, 1);
  87 }
  88
  89 static struct omap_uart_config omap3_evm_uart_config __initdata = {
  90         .enabled_uarts  = ((1 << 0) | (1 << 1) | (1 << 2)),
  91 };
  92
  93 static int omap3evm_keymap[] = {
  94         KEY(0, 0, KEY_LEFT),
  95         KEY(0, 1, KEY_RIGHT),
  96         KEY(0, 2, KEY_A),
  97         KEY(0, 3, KEY_B),
  98         KEY(1, 0, KEY_DOWN),
  99         KEY(1, 1, KEY_UP),
 100         KEY(1, 2, KEY_E),
 101         KEY(1, 3, KEY_F),
 102         KEY(2, 0, KEY_ENTER),
 103         KEY(2, 1, KEY_I),
 104         KEY(2, 2, KEY_J),
 105         KEY(2, 3, KEY_K),
 106         KEY(3, 0, KEY_M),
 107         KEY(3, 1, KEY_N),
 108         KEY(3, 2, KEY_O),
 109         KEY(3, 3, KEY_P)
 110 };
 111
 112 static struct twl4030_keypad_data omap3evm_kp_data = {
 113         .rows           = 4,
 114         .cols           = 4,
 115         .keymap         = omap3evm_keymap,
 116         .keymapsize     = ARRAY_SIZE(omap3evm_keymap),
 117         .rep            = 1,
 118         .irq            = TWL4030_MODIRQ_KEYPAD,
 119 };
 120
 121
 122 static struct twl4030_platform_data omap3evm_twldata = {
 123         .irq_base       = TWL4030_IRQ_BASE,
 124         .irq_end        = TWL4030_IRQ_END,
 125
 126         /* platform_data for children goes here */
 127         .keypad         = &omap3evm_kp_data,
 128 };
 129
 130 static struct i2c_board_info __initdata omap3evm_i2c_boardinfo[] = {
 131         {
 132                 I2C_BOARD_INFO("twl4030", 0x48),
 133                 .flags = I2C_CLIENT_WAKE,
 134                 .irq = INT_34XX_SYS_NIRQ,
 135                 .platform_data = &omap3evm_twldata,
 136         },
 137 };
 138
 139 static int __init omap3_evm_i2c_init(void)
 140 {
 141         omap_register_i2c_bus(1, 2600, omap3evm_i2c_boardinfo,
 142                         ARRAY_SIZE(omap3evm_i2c_boardinfo));
 143         omap_register_i2c_bus(2, 400, NULL, 0);
 144         omap_register_i2c_bus(3, 400, NULL, 0);
 145         return 0;
 146 }
 147
 148 static struct platform_device omap3_evm_lcd_device = {
 149         .name           = "omap3evm_lcd",
 150         .id             = -1,
 151 };
 152
 153 static struct omap_lcd_config omap3_evm_lcd_config __initdata = {
 154         .ctrl_name      = "internal",
 155 };
 156
 157 static void ads7846_dev_init(void)
 158 {
 159         if (omap_request_gpio(OMAP3_EVM_TS_GPIO) < 0)
 160                 printk(KERN_ERR "can't get ads7846 pen down GPIO\n");
 161
 162         omap_set_gpio_direction(OMAP3_EVM_TS_GPIO, 1);
 163
 164         omap_set_gpio_debounce(OMAP3_EVM_TS_GPIO, 1);
 165         omap_set_gpio_debounce_time(OMAP3_EVM_TS_GPIO, 0xa);
 166 }
 167
 168 static int ads7846_get_pendown_state(void)
 169 {
 170         return !omap_get_gpio_datain(OMAP3_EVM_TS_GPIO);
 171 }
 172
 173 struct ads7846_platform_data ads7846_config = {
 174         .x_max                  = 0x0fff,
 175         .y_max                  = 0x0fff,
 176         .x_plate_ohms           = 180,
 177         .pressure_max           = 255,
 178         .debounce_max           = 10,
 179         .debounce_tol           = 3,
 180         .debounce_rep           = 1,
 181         .get_pendown_state      = ads7846_get_pendown_state,
 182         .keep_vref_on           = 1,
 183         .settle_delay_usecs     = 150,
 184 };
 185
 186 static struct omap2_mcspi_device_config ads7846_mcspi_config = {
 187         .turbo_mode     = 0,
 188         .single_channel = 1,  /* 0: slave, 1: master */
 189 };
 190
 191 struct spi_board_info omap3evm_spi_board_info[] = {
 192         [0] = {
 193                 .modalias               = "ads7846",
 194                 .bus_num                = 1,
 195                 .chip_select            = 0,
 196                 .max_speed_hz           = 1500000,
 197                 .controller_data        = &ads7846_mcspi_config,
 198                 .irq                    = OMAP_GPIO_IRQ(OMAP3_EVM_TS_GPIO),
 199                 .platform_data          = &ads7846_config,
 200         },
 201 };
 202
 203 static void __init omap3_evm_init_irq(void)
 204 {
 205         omap2_init_common_hw(mt46h32m32lf6_sdrc_params);
 206         omap_init_irq();
 207         omap_gpio_init();
 208         omap3evm_init_smc911x();
 209 }
 210
 211 static struct omap_board_config_kernel omap3_evm_config[] __initdata = {
 212         { OMAP_TAG_UART,        &omap3_evm_uart_config },
 213         { OMAP_TAG_LCD,         &omap3_evm_lcd_config },
 214 };
 215
 216 static struct platform_device *omap3_evm_devices[] __initdata = {
 217         &omap3_evm_lcd_device,
 218         &omap3evm_smc911x_device,
 219 };
 220
 221 static void __init omap3_evm_init(void)
 222 {
 223         omap3_evm_i2c_init();
 224
 225         platform_add_devices(omap3_evm_devices, ARRAY_SIZE(omap3_evm_devices));
 226         omap_board_config = omap3_evm_config;
 227         omap_board_config_size = ARRAY_SIZE(omap3_evm_config);
 228
 229         spi_register_board_info(omap3evm_spi_board_info,
 230                                 ARRAY_SIZE(omap3evm_spi_board_info));
 231
 232         omap_serial_init();
 233         hsmmc_init();
 234         usb_musb_init();
 235         usb_ehci_init();
 236         omap3evm_flash_init();
 237         ads7846_dev_init();
 238 }
 239
 240 static void __init omap3_evm_map_io(void)
 241 {
 242         omap2_set_globals_343x();
 243         omap2_map_common_io();
 244 }
 245
 246 MACHINE_START(OMAP3EVM, "OMAP3 EVM")
 247         /* Maintainer: Syed Mohammed Khasim - Texas Instruments */
 248         .phys_io        = 0x48000000,
 249         .io_pg_offst    = ((0xd8000000) >> 18) & 0xfffc,
 250         .boot_params    = 0x80000100,
 251         .map_io         = omap3_evm_map_io,
 252         .init_irq       = omap3_evm_init_irq,
 253         .init_machine   = omap3_evm_init,
 254         .timer          = &omap_timer,
 255 MACHINE_END