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/input.h>
  22
  23 #include <linux/spi/spi.h>
  24 #include <linux/spi/ads7846.h>
  25 #include <linux/i2c/twl4030.h>
  26
  27 #include <mach/hardware.h>
  28 #include <asm/mach-types.h>
  29 #include <asm/mach/arch.h>
  30 #include <asm/mach/map.h>
  31
  32 #include <mach/gpio.h>
  33 #include <mach/board.h>
  34 #include <mach/usb-musb.h>
  35 #include <mach/usb-ehci.h>
  36 #include <mach/common.h>
  37 #include <mach/mcspi.h>
  38
  39 #include "sdram-micron-mt46h32m32lf-6.h"
  40 #include "twl4030-generic-scripts.h"
  41 #include "mmc-twl4030.h"
  42
  43
  44 static struct resource omap3evm_smc911x_resources[] = {
  45         [0] =   {
  46                 .start  = OMAP3EVM_ETHR_START,
  47                 .end    = (OMAP3EVM_ETHR_START + OMAP3EVM_ETHR_SIZE - 1),
  48                 .flags  = IORESOURCE_MEM,
  49         },
  50         [1] =   {
  51                 .start  = OMAP_GPIO_IRQ(OMAP3EVM_ETHR_GPIO_IRQ),
  52                 .end    = OMAP_GPIO_IRQ(OMAP3EVM_ETHR_GPIO_IRQ),
  53                 .flags  = IORESOURCE_IRQ,
  54         },
  55 };
  56
  57 static struct platform_device omap3evm_smc911x_device = {
  58         .name           = "smc911x",
  59         .id             = -1,
  60         .num_resources  = ARRAY_SIZE(omap3evm_smc911x_resources),
  61         .resource       = &omap3evm_smc911x_resources [0],
  62 };
  63
  64 static inline void __init omap3evm_init_smc911x(void)
  65 {
  66         int eth_cs;
  67         struct clk *l3ck;
  68         unsigned int rate;
  69
  70         eth_cs = OMAP3EVM_SMC911X_CS;
  71
  72         l3ck = clk_get(NULL, "l3_ck");
  73         if (IS_ERR(l3ck))
  74                 rate = 100000000;
  75         else
  76                 rate = clk_get_rate(l3ck);
  77
  78         if (gpio_request(OMAP3EVM_ETHR_GPIO_IRQ, "SMC911x irq") < 0) {
  79                 printk(KERN_ERR "Failed to request GPIO%d for smc911x IRQ\n",
  80                         OMAP3EVM_ETHR_GPIO_IRQ);
  81                 return;
  82         }
  83
  84         gpio_direction_input(OMAP3EVM_ETHR_GPIO_IRQ);
  85 }
  86
  87 static struct omap_uart_config omap3_evm_uart_config __initdata = {
  88         .enabled_uarts  = ((1 << 0) | (1 << 1) | (1 << 2)),
  89 };
  90
  91 static struct twl4030_gpio_platform_data omap3evm_gpio_data = {
  92         .gpio_base      = OMAP_MAX_GPIO_LINES,
  93         .irq_base       = TWL4030_GPIO_IRQ_BASE,
  94         .irq_end        = TWL4030_GPIO_IRQ_END,
  95 };
  96
  97 static struct twl4030_usb_data omap3evm_usb_data = {
  98         .usb_mode       = T2_USB_MODE_ULPI,
  99 };
 100
 101 static int omap3evm_keymap[] = {
 102         KEY(0, 0, KEY_LEFT),
 103         KEY(0, 1, KEY_RIGHT),
 104         KEY(0, 2, KEY_A),
 105         KEY(0, 3, KEY_B),
 106         KEY(1, 0, KEY_DOWN),
 107         KEY(1, 1, KEY_UP),
 108         KEY(1, 2, KEY_E),
 109         KEY(1, 3, KEY_F),
 110         KEY(2, 0, KEY_ENTER),
 111         KEY(2, 1, KEY_I),
 112         KEY(2, 2, KEY_J),
 113         KEY(2, 3, KEY_K),
 114         KEY(3, 0, KEY_M),
 115         KEY(3, 1, KEY_N),
 116         KEY(3, 2, KEY_O),
 117         KEY(3, 3, KEY_P)
 118 };
 119
 120 static struct twl4030_keypad_data omap3evm_kp_data = {
 121         .rows           = 4,
 122         .cols           = 4,
 123         .keymap         = omap3evm_keymap,
 124         .keymapsize     = ARRAY_SIZE(omap3evm_keymap),
 125         .rep            = 1,
 126 };
 127
 128 static struct twl4030_madc_platform_data omap3evm_madc_data = {
 129         .irq_line       = 1,
 130 };
 131
 132 static struct twl4030_platform_data omap3evm_twldata = {
 133         .irq_base       = TWL4030_IRQ_BASE,
 134         .irq_end        = TWL4030_IRQ_END,
 135
 136         /* platform_data for children goes here */
 137         .keypad         = &omap3evm_kp_data,
 138         .madc           = &omap3evm_madc_data,
 139         .usb            = &omap3evm_usb_data,
 140         .power          = GENERIC3430_T2SCRIPTS_DATA,
 141         .gpio           = &omap3evm_gpio_data,
 142 };
 143
 144 static struct i2c_board_info __initdata omap3evm_i2c_boardinfo[] = {
 145         {
 146                 I2C_BOARD_INFO("twl4030", 0x48),
 147                 .flags = I2C_CLIENT_WAKE,
 148                 .irq = INT_34XX_SYS_NIRQ,
 149                 .platform_data = &omap3evm_twldata,
 150         },
 151 };
 152
 153 static int __init omap3_evm_i2c_init(void)
 154 {
 155         omap_register_i2c_bus(1, 2600, omap3evm_i2c_boardinfo,
 156                         ARRAY_SIZE(omap3evm_i2c_boardinfo));
 157         omap_register_i2c_bus(2, 400, NULL, 0);
 158         omap_register_i2c_bus(3, 400, NULL, 0);
 159         return 0;
 160 }
 161
 162 static struct platform_device omap3_evm_lcd_device = {
 163         .name           = "omap3evm_lcd",
 164         .id             = -1,
 165 };
 166
 167 static struct omap_lcd_config omap3_evm_lcd_config __initdata = {
 168         .ctrl_name      = "internal",
 169 };
 170
 171 static void ads7846_dev_init(void)
 172 {
 173         if (gpio_request(OMAP3_EVM_TS_GPIO, "ADS7846 pendown") < 0)
 174                 printk(KERN_ERR "can't get ads7846 pen down GPIO\n");
 175
 176         gpio_direction_input(OMAP3_EVM_TS_GPIO);
 177
 178         omap_set_gpio_debounce(OMAP3_EVM_TS_GPIO, 1);
 179         omap_set_gpio_debounce_time(OMAP3_EVM_TS_GPIO, 0xa);
 180 }
 181
 182 static int ads7846_get_pendown_state(void)
 183 {
 184         return !gpio_get_value(OMAP3_EVM_TS_GPIO);
 185 }
 186
 187 struct ads7846_platform_data ads7846_config = {
 188         .x_max                  = 0x0fff,
 189         .y_max                  = 0x0fff,
 190         .x_plate_ohms           = 180,
 191         .pressure_max           = 255,
 192         .debounce_max           = 10,
 193         .debounce_tol           = 3,
 194         .debounce_rep           = 1,
 195         .get_pendown_state      = ads7846_get_pendown_state,
 196         .keep_vref_on           = 1,
 197         .settle_delay_usecs     = 150,
 198 };
 199
 200 static struct omap2_mcspi_device_config ads7846_mcspi_config = {
 201         .turbo_mode     = 0,
 202         .single_channel = 1,  /* 0: slave, 1: master */
 203 };
 204
 205 struct spi_board_info omap3evm_spi_board_info[] = {
 206         [0] = {
 207                 .modalias               = "ads7846",
 208                 .bus_num                = 1,
 209                 .chip_select            = 0,
 210                 .max_speed_hz           = 1500000,
 211                 .controller_data        = &ads7846_mcspi_config,
 212                 .irq                    = OMAP_GPIO_IRQ(OMAP3_EVM_TS_GPIO),
 213                 .platform_data          = &ads7846_config,
 214         },
 215 };
 216
 217 static void __init omap3_evm_init_irq(void)
 218 {
 219         omap2_init_common_hw(mt46h32m32lf6_sdrc_params);
 220         omap_init_irq();
 221         omap_gpio_init();
 222         omap3evm_init_smc911x();
 223 }
 224
 225 static struct omap_board_config_kernel omap3_evm_config[] __initdata = {
 226         { OMAP_TAG_UART,        &omap3_evm_uart_config },
 227         { OMAP_TAG_LCD,         &omap3_evm_lcd_config },
 228 };
 229
 230 static struct platform_device *omap3_evm_devices[] __initdata = {
 231         &omap3_evm_lcd_device,
 232         &omap3evm_smc911x_device,
 233 };
 234
 235 static struct twl4030_hsmmc_info mmc[] __initdata = {
 236         {
 237                 .mmc            = 1,
 238                 .wires          = 4,
 239                 .gpio_cd        = -EINVAL,
 240                 .gpio_wp        = -EINVAL,
 241         },
 242         {}      /* Terminator */
 243 };
 244
 245 static void __init omap3_evm_init(void)
 246 {
 247         omap3_evm_i2c_init();
 248
 249         platform_add_devices(omap3_evm_devices, ARRAY_SIZE(omap3_evm_devices));
 250         omap_board_config = omap3_evm_config;
 251         omap_board_config_size = ARRAY_SIZE(omap3_evm_config);
 252
 253         spi_register_board_info(omap3evm_spi_board_info,
 254                                 ARRAY_SIZE(omap3evm_spi_board_info));
 255
 256         omap_serial_init();
 257         twl4030_mmc_init(mmc);
 258         usb_musb_init();
 259         usb_ehci_init();
 260         omap3evm_flash_init();
 261         ads7846_dev_init();
 262 }
 263
 264 static void __init omap3_evm_map_io(void)
 265 {
 266         omap2_set_globals_343x();
 267         omap2_map_common_io();
 268 }
 269
 270 MACHINE_START(OMAP3EVM, "OMAP3 EVM")
 271         /* Maintainer: Syed Mohammed Khasim - Texas Instruments */
 272         .phys_io        = 0x48000000,
 273         .io_pg_offst    = ((0xd8000000) >> 18) & 0xfffc,
 274         .boot_params    = 0x80000100,
 275         .map_io         = omap3_evm_map_io,
 276         .init_irq       = omap3_evm_init_irq,
 277         .init_machine   = omap3_evm_init,
 278         .timer          = &omap_timer,
 279 MACHINE_END