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/spi/spi.h>
  23 #include <linux/spi/ads7846.h>
  24
  25 #include <asm/hardware.h>
  26 #include <asm/mach-types.h>
  27 #include <asm/mach/arch.h>
  28 #include <asm/mach/map.h>
  29
  30 #include <asm/arch/gpio.h>
  31 #include <asm/arch/board.h>
  32 #include <asm/arch/hsmmc.h>
  33 #include <asm/arch/usb-musb.h>
  34 #include <asm/arch/usb-ehci.h>
  35 #include <asm/arch/common.h>
  36 #include <asm/arch/mcspi.h>
  37
  38 static struct resource omap3evm_smc911x_resources[] = {
  39         [0] =   {
  40                 .start  = OMAP3EVM_ETHR_START,
  41                 .end    = (OMAP3EVM_ETHR_START + OMAP3EVM_ETHR_SIZE - 1),
  42                 .flags  = IORESOURCE_MEM,
  43         },
  44         [1] =   {
  45                 .start  = OMAP_GPIO_IRQ(OMAP3EVM_ETHR_GPIO_IRQ),
  46                 .end    = OMAP_GPIO_IRQ(OMAP3EVM_ETHR_GPIO_IRQ),
  47                 .flags  = IORESOURCE_IRQ,
  48         },
  49 };
  50
  51 static struct platform_device omap3evm_smc911x_device = {
  52         .name           = "smc911x",
  53         .id             = -1,
  54         .num_resources  = ARRAY_SIZE(omap3evm_smc911x_resources),
  55         .resource       = &omap3evm_smc911x_resources [0],
  56 };
  57
  58 static inline void __init omap3evm_init_smc911x(void)
  59 {
  60         int eth_cs;
  61         struct clk *l3ck;
  62         unsigned int rate;
  63
  64         eth_cs = OMAP3EVM_SMC911X_CS;
  65
  66         l3ck = clk_get(NULL, "l3_ck");
  67         if (IS_ERR(l3ck))
  68                 rate = 100000000;
  69         else
  70                 rate = clk_get_rate(l3ck);
  71
  72         if (omap_request_gpio(OMAP3EVM_ETHR_GPIO_IRQ) < 0) {
  73                 printk(KERN_ERR "Failed to request GPIO%d for smc911x IRQ\n",
  74                         OMAP3EVM_ETHR_GPIO_IRQ);
  75                 return;
  76         }
  77
  78         omap_set_gpio_direction(OMAP3EVM_ETHR_GPIO_IRQ, 1);
  79 }
  80
  81 static struct omap_uart_config omap3_evm_uart_config __initdata = {
  82         .enabled_uarts  = ((1 << 0) | (1 << 1) | (1 << 2)),
  83 };
  84
  85 static int __init omap3_evm_i2c_init(void)
  86 {
  87         omap_register_i2c_bus(1, 2600, NULL, 0);
  88         omap_register_i2c_bus(2, 400, NULL, 0);
  89         omap_register_i2c_bus(3, 400, NULL, 0);
  90         return 0;
  91 }
  92
  93 static struct omap_mmc_config omap3_evm_mmc_config __initdata = {
  94         .mmc [0] = {
  95                 .enabled        = 1,
  96                 .wire4          = 1,
  97         },
  98 };
  99
 100 static struct platform_device omap3_evm_lcd_device = {
 101         .name           = "omap3evm_lcd",
 102         .id             = -1,
 103 };
 104
 105 static struct omap_lcd_config omap3_evm_lcd_config __initdata = {
 106         .ctrl_name      = "internal",
 107 };
 108
 109 static struct platform_device omap3_evm_twl4030rtc_device = {
 110         .name           = "twl4030_rtc",
 111         .id             = -1,
 112 };
 113
 114 static void ads7846_dev_init(void)
 115 {
 116         if (omap_request_gpio(OMAP3_EVM_TS_GPIO) < 0)
 117                 printk(KERN_ERR "can't get ads7846 pen down GPIO\n");
 118
 119         omap_set_gpio_direction(OMAP3_EVM_TS_GPIO, 1);
 120
 121         omap_set_gpio_debounce(OMAP3_EVM_TS_GPIO, 1);
 122         omap_set_gpio_debounce_time(OMAP3_EVM_TS_GPIO, 0xa);
 123 }
 124
 125 static int ads7846_get_pendown_state(void)
 126 {
 127         return !omap_get_gpio_datain(OMAP3_EVM_TS_GPIO);
 128 }
 129
 130 struct ads7846_platform_data ads7846_config = {
 131         .get_pendown_state      = ads7846_get_pendown_state,
 132         .keep_vref_on           = 1,
 133 };
 134
 135 static struct omap2_mcspi_device_config ads7846_mcspi_config = {
 136         .turbo_mode     = 0,
 137         .single_channel = 1,  /* 0: slave, 1: master */
 138 };
 139
 140 struct spi_board_info omap3evm_spi_board_info[] = {
 141         [0] = {
 142                 .modalias               = "ads7846",
 143                 .bus_num                = 1,
 144                 .chip_select            = 0,
 145                 .max_speed_hz           = 1500000,
 146                 .controller_data        = &ads7846_mcspi_config,
 147                 .irq                    = OMAP_GPIO_IRQ(OMAP3_EVM_TS_GPIO),
 148                 .platform_data          = &ads7846_config,
 149         },
 150 };
 151
 152 static void __init omap3_evm_init_irq(void)
 153 {
 154         omap2_init_common_hw();
 155         omap_init_irq();
 156         omap_gpio_init();
 157         omap3evm_init_smc911x();
 158 }
 159
 160 static struct omap_board_config_kernel omap3_evm_config[] __initdata = {
 161         { OMAP_TAG_UART,        &omap3_evm_uart_config },
 162         { OMAP_TAG_MMC,         &omap3_evm_mmc_config },
 163         { OMAP_TAG_LCD,         &omap3_evm_lcd_config },
 164 };
 165
 166 static struct platform_device *omap3_evm_devices[] __initdata = {
 167         &omap3_evm_lcd_device,
 168 #ifdef CONFIG_RTC_DRV_TWL4030
 169         &omap3_evm_twl4030rtc_device,
 170 #endif
 171         &omap3evm_smc911x_device,
 172 };
 173
 174 static void __init omap3_evm_init(void)
 175 {
 176         platform_add_devices(omap3_evm_devices, ARRAY_SIZE(omap3_evm_devices));
 177         omap_board_config = omap3_evm_config;
 178         omap_board_config_size = ARRAY_SIZE(omap3_evm_config);
 179
 180         spi_register_board_info(omap3evm_spi_board_info,
 181                                 ARRAY_SIZE(omap3evm_spi_board_info));
 182
 183         omap_serial_init();
 184         hsmmc_init();
 185         usb_musb_init();
 186         usb_ehci_init();
 187         omap3evm_flash_init();
 188         ads7846_dev_init();
 189 }
 190
 191 arch_initcall(omap3_evm_i2c_init);
 192
 193 static void __init omap3_evm_map_io(void)
 194 {
 195         omap2_set_globals_343x();
 196         omap2_map_common_io();
 197 }
 198
 199 MACHINE_START(OMAP3EVM, "OMAP3 EVM")
 200         /* Maintainer: Syed Mohammed Khasim - Texas Instruments */
 201         .phys_io        = 0x48000000,
 202         .io_pg_offst    = ((0xd8000000) >> 18) & 0xfffc,
 203         .boot_params    = 0x80000100,
 204         .map_io         = omap3_evm_map_io,
 205         .init_irq       = omap3_evm_init_irq,
 206         .init_machine   = omap3_evm_init,
 207         .timer          = &omap_timer,
 208 MACHINE_END