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 #include <linux/io.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/mcspi.h>
  33 #include <mach/gpio.h>
  34 #include <mach/board.h>
  35 #include <mach/common.h>
  36 #include <mach/gpmc.h>
  37
  38 #include <asm/delay.h>
  39 #include <mach/control.h>
  40 #include <mach/usb.h>
  41
  42 #include "mmc-twl4030.h"
  43
  44 #define LDP_SMC911X_CS          1
  45 #define LDP_SMC911X_GPIO        152
  46 #define DEBUG_BASE              0x08000000
  47 #define LDP_ETHR_START          DEBUG_BASE
  48
  49 static struct resource ldp_smc911x_resources[] = {
  50         [0] = {
  51                 .start  = LDP_ETHR_START,
  52                 .end    = LDP_ETHR_START + SZ_4K,
  53                 .flags  = IORESOURCE_MEM,
  54         },
  55         [1] = {
  56                 .start  = 0,
  57                 .end    = 0,
  58                 .flags  = IORESOURCE_IRQ | IORESOURCE_IRQ_LOWLEVEL,
  59         },
  60 };
  61
  62 static struct platform_device ldp_smc911x_device = {
  63         .name           = "smc911x",
  64         .id             = -1,
  65         .num_resources  = ARRAY_SIZE(ldp_smc911x_resources),
  66         .resource       = ldp_smc911x_resources,
  67 };
  68
  69 static struct platform_device *ldp_devices[] __initdata = {
  70         &ldp_smc911x_device,
  71 };
  72
  73 static inline void __init ldp_init_smc911x(void)
  74 {
  75         int eth_cs;
  76         unsigned long cs_mem_base;
  77         int eth_gpio = 0;
  78
  79         eth_cs = LDP_SMC911X_CS;
  80
  81         if (gpmc_cs_request(eth_cs, SZ_16M, &cs_mem_base) < 0) {
  82                 printk(KERN_ERR "Failed to request GPMC mem for smc911x\n");
  83                 return;
  84         }
  85
  86         ldp_smc911x_resources[0].start = cs_mem_base + 0x0;
  87         ldp_smc911x_resources[0].end   = cs_mem_base + 0xff;
  88         udelay(100);
  89
  90         eth_gpio = LDP_SMC911X_GPIO;
  91
  92         ldp_smc911x_resources[1].start = OMAP_GPIO_IRQ(eth_gpio);
  93
  94         if (gpio_request(eth_gpio, "smc911x irq") < 0) {
  95                 printk(KERN_ERR "Failed to request GPIO%d for smc911x IRQ\n",
  96                                 eth_gpio);
  97                 return;
  98         }
  99         gpio_direction_input(eth_gpio);
 100 }
 101
 102 static void __init omap_ldp_init_irq(void)
 103 {
 104         omap2_init_common_hw(NULL);
 105         omap_init_irq();
 106         omap_gpio_init();
 107         ldp_init_smc911x();
 108 }
 109
 110 static struct omap_uart_config ldp_uart_config __initdata = {
 111         .enabled_uarts  = ((1 << 0) | (1 << 1) | (1 << 2)),
 112 };
 113
 114 static struct omap_board_config_kernel ldp_config[] __initdata = {
 115         { OMAP_TAG_UART,        &ldp_uart_config },
 116 };
 117
 118 static struct twl4030_gpio_platform_data ldp_gpio_data = {
 119         .gpio_base      = OMAP_MAX_GPIO_LINES,
 120         .irq_base       = TWL4030_GPIO_IRQ_BASE,
 121         .irq_end        = TWL4030_GPIO_IRQ_END,
 122 };
 123
 124 static struct twl4030_platform_data ldp_twldata = {
 125         .irq_base       = TWL4030_IRQ_BASE,
 126         .irq_end        = TWL4030_IRQ_END,
 127
 128         /* platform_data for children goes here */
 129         .gpio           = &ldp_gpio_data,
 130 };
 131
 132 static struct i2c_board_info __initdata ldp_i2c_boardinfo[] = {
 133         {
 134                 I2C_BOARD_INFO("twl4030", 0x48),
 135                 .flags = I2C_CLIENT_WAKE,
 136                 .irq = INT_34XX_SYS_NIRQ,
 137                 .platform_data = &ldp_twldata,
 138         },
 139 };
 140
 141 static int __init omap_i2c_init(void)
 142 {
 143         omap_register_i2c_bus(1, 2600, ldp_i2c_boardinfo,
 144                         ARRAY_SIZE(ldp_i2c_boardinfo));
 145         omap_register_i2c_bus(2, 400, NULL, 0);
 146         omap_register_i2c_bus(3, 400, NULL, 0);
 147         return 0;
 148 }
 149
 150 static struct twl4030_hsmmc_info mmc[] __initdata = {
 151         {
 152                 .mmc            = 1,
 153                 .wires          = 4,
 154                 .gpio_cd        = -EINVAL,
 155                 .gpio_wp        = -EINVAL,
 156         },
 157         {}      /* Terminator */
 158 };
 159
 160 static void __init omap_ldp_init(void)
 161 {
 162         omap_i2c_init();
 163         platform_add_devices(ldp_devices, ARRAY_SIZE(ldp_devices));
 164         omap_board_config = ldp_config;
 165         omap_board_config_size = ARRAY_SIZE(ldp_config);
 166         omap_serial_init();
 167         twl4030_mmc_init(mmc);
 168         usb_musb_init();
 169 }
 170
 171 static void __init omap_ldp_map_io(void)
 172 {
 173         omap2_set_globals_343x();
 174         omap2_map_common_io();
 175 }
 176
 177 MACHINE_START(OMAP_LDP, "OMAP LDP board")
 178         .phys_io        = 0x48000000,
 179         .io_pg_offst    = ((0xd8000000) >> 18) & 0xfffc,
 180         .boot_params    = 0x80000100,
 181         .map_io         = omap_ldp_map_io,
 182         .init_irq       = omap_ldp_init_irq,
 183         .init_machine   = omap_ldp_init,
 184         .timer          = &omap_timer,
 185 MACHINE_END