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