arch/arm/mach-omap2/board-ldp.c

   1 /*
   2  * linux/arch/arm/mach-omap2/board-ldp.c
   3  *
   4  * Copyright (C) 2008 Texas Instruments Inc.
   5  * Nishant Kamat <nskamat@ti.com>
   6  *
   7  * Modified from mach-omap2/board-3430sdp.c
   8  *
   9  * This program is free software; you can redistribute it and/or modify
  10  * it under the terms of the GNU General Public License version 2 as
  11  * published by the Free Software Foundation.
  12  */
  13
  14 #include <linux/kernel.h>
  15 #include <linux/init.h>
  16 #include <linux/platform_device.h>
  17 #include <linux/delay.h>
  18 #include <linux/input.h>
  19 #include <linux/workqueue.h>
  20 #include <linux/err.h>
  21 #include <linux/clk.h>
  22 #include <linux/spi/spi.h>
  23 #include <linux/spi/ads7846.h>
  24 #include <linux/i2c/twl4030.h>
  25
  26 #include <mach/hardware.h>
  27 #include <asm/mach-types.h>
  28 #include <asm/mach/arch.h>
  29 #include <asm/mach/map.h>
  30
  31 #include <mach/mcspi.h>
  32 #include <mach/gpio.h>
  33 #include <mach/board.h>
  34 #include <mach/common.h>
  35 #include <mach/gpmc.h>
  36
  37 #include <asm/io.h>
  38 #include <asm/delay.h>
  39 #include <mach/control.h>
  40
  41 #include "mmc-twl4030.h"
  42
  43 #define LDP_SMC911X_CS          1
  44 #define LDP_SMC911X_GPIO        152
  45 #define DEBUG_BASE              0x08000000
  46 #define LDP_ETHR_START          DEBUG_BASE
  47
  48 static struct resource ldp_smc911x_resources[] = {
  49         [0] = {
  50                 .start  = LDP_ETHR_START,
  51                 .end    = LDP_ETHR_START + SZ_4K,
  52                 .flags  = IORESOURCE_MEM,
  53         },
  54         [1] = {
  55                 .start  = 0,
  56                 .end    = 0,
  57                 .flags  = IORESOURCE_IRQ | IORESOURCE_IRQ_LOWLEVEL,
  58         },
  59 };
  60
  61 static struct platform_device ldp_smc911x_device = {
  62         .name           = "smc911x",
  63         .id             = -1,
  64         .num_resources  = ARRAY_SIZE(ldp_smc911x_resources),
  65         .resource       = ldp_smc911x_resources,
  66 };
  67
  68 static struct platform_device *ldp_devices[] __initdata = {
  69         &ldp_smc911x_device,
  70 };
  71
  72 static inline void __init ldp_init_smc911x(void)
  73 {
  74         int eth_cs;
  75         unsigned long cs_mem_base;
  76         int eth_gpio = 0;
  77
  78         eth_cs = LDP_SMC911X_CS;
  79
  80         if (gpmc_cs_request(eth_cs, SZ_16M, &cs_mem_base) < 0) {
  81                 printk(KERN_ERR "Failed to request GPMC mem for smc911x\n");
  82                 return;
  83         }
  84
  85         ldp_smc911x_resources[0].start = cs_mem_base + 0x0;
  86         ldp_smc911x_resources[0].end   = cs_mem_base + 0xff;
  87         udelay(100);
  88
  89         eth_gpio = LDP_SMC911X_GPIO;
  90
  91         ldp_smc911x_resources[1].start = OMAP_GPIO_IRQ(eth_gpio);
  92
  93         if (gpio_request(eth_gpio, "smc911x irq") < 0) {
  94                 printk(KERN_ERR "Failed to request GPIO%d for smc911x IRQ\n",
  95                                 eth_gpio);
  96                 return;
  97         }
  98         gpio_direction_input(eth_gpio);
  99 }
 100
 101 static void __init omap_ldp_init_irq(void)
 102 {
 103         omap2_init_common_hw();
 104         omap_init_irq();
 105         omap_gpio_init();
 106         ldp_init_smc911x();
 107 }
 108
 109 static struct omap_uart_config ldp_uart_config __initdata = {
 110         .enabled_uarts  = ((1 << 0) | (1 << 1) | (1 << 2)),
 111 };
 112
 113 static struct omap_board_config_kernel ldp_config[] __initdata = {
 114         { OMAP_TAG_UART,        &ldp_uart_config },
 115 };
 116
 117 static struct twl4030_gpio_platform_data ldp_gpio_data = {
 118         .gpio_base      = OMAP_MAX_GPIO_LINES,
 119         .irq_base       = TWL4030_GPIO_IRQ_BASE,
 120         .irq_end        = TWL4030_GPIO_IRQ_END,
 121 };
 122
 123 static struct twl4030_platform_data ldp_twldata = {
 124         .irq_base       = TWL4030_IRQ_BASE,
 125         .irq_end        = TWL4030_IRQ_END,
 126
 127         /* platform_data for children goes here */
 128         .gpio           = &ldp_gpio_data,
 129 };
 130
 131 static struct i2c_board_info __initdata ldp_i2c_boardinfo[] = {
 132         {
 133                 I2C_BOARD_INFO("twl4030", 0x48),
 134                 .flags = I2C_CLIENT_WAKE,
 135                 .irq = INT_34XX_SYS_NIRQ,
 136                 .platform_data = &ldp_twldata,
 137         },
 138 };
 139
 140 static int __init omap_i2c_init(void)
 141 {
 142         omap_register_i2c_bus(1, 2600, ldp_i2c_boardinfo,
 143                         ARRAY_SIZE(ldp_i2c_boardinfo));
 144         omap_register_i2c_bus(2, 400, NULL, 0);
 145         omap_register_i2c_bus(3, 400, NULL, 0);
 146         return 0;
 147 }
 148
 149 static struct twl4030_hsmmc_info mmc[] __initdata = {
 150         {
 151                 .mmc            = 1,
 152                 .wires          = 4,
 153                 .gpio_cd        = -EINVAL,
 154                 .gpio_wp        = -EINVAL,
 155         },
 156         {}      /* Terminator */
 157 };
 158
 159 static void __init omap_ldp_init(void)
 160 {
 161         omap_i2c_init();
 162         platform_add_devices(ldp_devices, ARRAY_SIZE(ldp_devices));
 163         omap_board_config = ldp_config;
 164         omap_board_config_size = ARRAY_SIZE(ldp_config);
 165         omap_serial_init();
 166         twl4030_mmc_init(mmc);
 167 }
 168
 169 static void __init omap_ldp_map_io(void)
 170 {
 171         omap2_set_globals_343x();
 172         omap2_map_common_io();
 173 }
 174
 175 MACHINE_START(OMAP_LDP, "OMAP LDP board")
 176         .phys_io        = 0x48000000,
 177         .io_pg_offst    = ((0xd8000000) >> 18) & 0xfffc,
 178         .boot_params    = 0x80000100,
 179         .map_io         = omap_ldp_map_io,
 180         .init_irq       = omap_ldp_init_irq,
 181         .init_machine   = omap_ldp_init,
 182         .timer          = &omap_timer,
 183 MACHINE_END