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 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         .irq            = TWL4030_MODIRQ_KEYPAD,
 129 };
 130
 131 static struct twl4030_platform_data omap3evm_twldata = {
 132         .irq_base       = TWL4030_IRQ_BASE,
 133         .irq_end        = TWL4030_IRQ_END,
 134
 135         /* platform_data for children goes here */
 136         .keypad         = &omap3evm_kp_data,
 137         .usb            = &omap3evm_usb_data,
 138         .gpio           = &omap3evm_gpio_data,
 139 };
 140
 141 static struct i2c_board_info __initdata omap3evm_i2c_boardinfo[] = {
 142         {
 143                 I2C_BOARD_INFO("twl4030", 0x48),
 144                 .flags = I2C_CLIENT_WAKE,
 145                 .irq = INT_34XX_SYS_NIRQ,
 146                 .platform_data = &omap3evm_twldata,
 147         },
 148 };
 149
 150 static int __init omap3_evm_i2c_init(void)
 151 {
 152         omap_register_i2c_bus(1, 2600, omap3evm_i2c_boardinfo,
 153                         ARRAY_SIZE(omap3evm_i2c_boardinfo));
 154         omap_register_i2c_bus(2, 400, NULL, 0);
 155         omap_register_i2c_bus(3, 400, NULL, 0);
 156         return 0;
 157 }
 158
 159 static struct platform_device omap3_evm_lcd_device = {
 160         .name           = "omap3evm_lcd",
 161         .id             = -1,
 162 };
 163
 164 static struct omap_lcd_config omap3_evm_lcd_config __initdata = {
 165         .ctrl_name      = "internal",
 166 };
 167
 168 static void ads7846_dev_init(void)
 169 {
 170         if (omap_request_gpio(OMAP3_EVM_TS_GPIO) < 0)
 171                 printk(KERN_ERR "can't get ads7846 pen down GPIO\n");
 172
 173         omap_set_gpio_direction(OMAP3_EVM_TS_GPIO, 1);
 174
 175         omap_set_gpio_debounce(OMAP3_EVM_TS_GPIO, 1);
 176         omap_set_gpio_debounce_time(OMAP3_EVM_TS_GPIO, 0xa);
 177 }
 178
 179 static int ads7846_get_pendown_state(void)
 180 {
 181         return !omap_get_gpio_datain(OMAP3_EVM_TS_GPIO);
 182 }
 183
 184 struct ads7846_platform_data ads7846_config = {
 185         .x_max                  = 0x0fff,
 186         .y_max                  = 0x0fff,
 187         .x_plate_ohms           = 180,
 188         .pressure_max           = 255,
 189         .debounce_max           = 10,
 190         .debounce_tol           = 3,
 191         .debounce_rep           = 1,
 192         .get_pendown_state      = ads7846_get_pendown_state,
 193         .keep_vref_on           = 1,
 194         .settle_delay_usecs     = 150,
 195 };
 196
 197 static struct omap2_mcspi_device_config ads7846_mcspi_config = {
 198         .turbo_mode     = 0,
 199         .single_channel = 1,  /* 0: slave, 1: master */
 200 };
 201
 202 struct spi_board_info omap3evm_spi_board_info[] = {
 203         [0] = {
 204                 .modalias               = "ads7846",
 205                 .bus_num                = 1,
 206                 .chip_select            = 0,
 207                 .max_speed_hz           = 1500000,
 208                 .controller_data        = &ads7846_mcspi_config,
 209                 .irq                    = OMAP_GPIO_IRQ(OMAP3_EVM_TS_GPIO),
 210                 .platform_data          = &ads7846_config,
 211         },
 212 };
 213
 214 static void __init omap3_evm_init_irq(void)
 215 {
 216         omap2_init_common_hw(mt46h32m32lf6_sdrc_params);
 217         omap_init_irq();
 218         omap_gpio_init();
 219         omap3evm_init_smc911x();
 220 }
 221
 222 static struct omap_board_config_kernel omap3_evm_config[] __initdata = {
 223         { OMAP_TAG_UART,        &omap3_evm_uart_config },
 224         { OMAP_TAG_LCD,         &omap3_evm_lcd_config },
 225 };
 226
 227 static struct platform_device *omap3_evm_devices[] __initdata = {
 228         &omap3_evm_lcd_device,
 229         &omap3evm_smc911x_device,
 230 };
 231
 232 static void __init omap3_evm_init(void)
 233 {
 234         omap3_evm_i2c_init();
 235
 236         platform_add_devices(omap3_evm_devices, ARRAY_SIZE(omap3_evm_devices));
 237         omap_board_config = omap3_evm_config;
 238         omap_board_config_size = ARRAY_SIZE(omap3_evm_config);
 239
 240         spi_register_board_info(omap3evm_spi_board_info,
 241                                 ARRAY_SIZE(omap3evm_spi_board_info));
 242
 243         omap_serial_init();
 244         hsmmc_init();
 245         usb_musb_init();
 246         usb_ehci_init();
 247         omap3evm_flash_init();
 248         ads7846_dev_init();
 249 }
 250
 251 static void __init omap3_evm_map_io(void)
 252 {
 253         omap2_set_globals_343x();
 254         omap2_map_common_io();
 255 }
 256
 257 MACHINE_START(OMAP3EVM, "OMAP3 EVM")
 258         /* Maintainer: Syed Mohammed Khasim - Texas Instruments */
 259         .phys_io        = 0x48000000,
 260         .io_pg_offst    = ((0xd8000000) >> 18) & 0xfffc,
 261         .boot_params    = 0x80000100,
 262         .map_io         = omap3_evm_map_io,
 263         .init_irq       = omap3_evm_init_irq,
 264         .init_machine   = omap3_evm_init,
 265         .timer          = &omap_timer,
 266 MACHINE_END