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/board-ldp.h>
  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/io.h>
  39 #include <asm/delay.h>
  40 #include <mach/control.h>
  41
  42 #include "mmc-twl4030.h"
  43
  44 #define SDP3430_SMC91X_CS       3
  45
  46 static struct resource ldp_smc911x_resources[] = {
  47         [0] = {
  48                 .start  = OMAP34XX_ETHR_START,
  49                 .end    = OMAP34XX_ETHR_START + SZ_4K,
  50                 .flags  = IORESOURCE_MEM,
  51         },
  52         [1] = {
  53                 .start  = 0,
  54                 .end    = 0,
  55                 .flags  = IORESOURCE_IRQ | IORESOURCE_IRQ_LOWLEVEL,
  56         },
  57 };
  58
  59 static struct platform_device ldp_smc911x_device = {
  60         .name           = "smc911x",
  61         .id             = -1,
  62         .num_resources  = ARRAY_SIZE(ldp_smc911x_resources),
  63         .resource       = ldp_smc911x_resources,
  64 };
  65
  66 static struct platform_device *ldp_devices[] __initdata = {
  67         &ldp_smc911x_device,
  68 };
  69
  70 static inline void __init ldp_init_smc911x(void)
  71 {
  72         int eth_cs;
  73         unsigned long cs_mem_base;
  74         int eth_gpio = 0;
  75
  76         eth_cs = LDP_SMC911X_CS;
  77
  78         if (gpmc_cs_request(eth_cs, SZ_16M, &cs_mem_base) < 0) {
  79                 printk(KERN_ERR "Failed to request GPMC mem for smc911x\n");
  80                 return;
  81         }
  82
  83         ldp_smc911x_resources[0].start = cs_mem_base + 0x0;
  84         ldp_smc911x_resources[0].end   = cs_mem_base + 0xf;
  85         udelay(100);
  86
  87         eth_gpio = LDP_SMC911X_GPIO;
  88
  89         ldp_smc911x_resources[1].start = OMAP_GPIO_IRQ(eth_gpio);
  90
  91         if (omap_request_gpio(eth_gpio) < 0) {
  92                 printk(KERN_ERR "Failed to request GPIO%d for smc911x IRQ\n",
  93                                 eth_gpio);
  94                 return;
  95         }
  96         gpio_direction_input(eth_gpio);
  97 }
  98
  99 static void __init omap_ldp_init_irq(void)
 100 {
 101         omap2_init_common_hw();
 102         omap_init_irq();
 103         omap_gpio_init();
 104         ldp_init_smc911x();
 105 }
 106
 107 static struct omap_uart_config ldp_uart_config __initdata = {
 108         .enabled_uarts  = ((1 << 0) | (1 << 1) | (1 << 2)),
 109 };
 110
 111 static struct omap_board_config_kernel ldp_config[] __initdata = {
 112         { OMAP_TAG_UART,        &ldp_uart_config },
 113 };
 114
 115 static struct twl4030_gpio_platform_data ldp_gpio_data = {
 116         .gpio_base      = OMAP_MAX_GPIO_LINES,
 117         .irq_base       = TWL4030_GPIO_IRQ_BASE,
 118         .irq_end        = TWL4030_GPIO_IRQ_END,
 119 };
 120
 121 static struct twl4030_platform_data ldp_twldata = {
 122         .irq_base       = TWL4030_IRQ_BASE,
 123         .irq_end        = TWL4030_IRQ_END,
 124
 125         /* platform_data for children goes here */
 126         .gpio           = &ldp_gpio_data,
 127 };
 128
 129 static struct i2c_board_info __initdata ldp_i2c_boardinfo[] = {
 130         {
 131                 I2C_BOARD_INFO("twl4030", 0x48),
 132                 .flags = I2C_CLIENT_WAKE,
 133                 .irq = INT_34XX_SYS_NIRQ,
 134                 .platform_data = &ldp_twldata,
 135         },
 136 };
 137
 138 static int __init omap_i2c_init(void)
 139 {
 140         omap_register_i2c_bus(1, 2600, ldp_i2c_boardinfo,
 141                         ARRAY_SIZE(ldp_i2c_boardinfo));
 142         omap_register_i2c_bus(2, 400, NULL, 0);
 143         omap_register_i2c_bus(3, 400, NULL, 0);
 144         return 0;
 145 }
 146
 147 static struct twl4030_hsmmc_info mmc[] __initdata = {
 148         {
 149                 .mmc            = 1,
 150                 .wires          = 4,
 151                 .gpio_cd        = -EINVAL,
 152                 .gpio_wp        = -EINVAL,
 153         },
 154         {}      /* Terminator */
 155 };
 156
 157 static void __init omap_ldp_init(void)
 158 {
 159         omap_i2c_init();
 160         platform_add_devices(ldp_devices, ARRAY_SIZE(ldp_devices));
 161         omap_board_config = ldp_config;
 162         omap_board_config_size = ARRAY_SIZE(ldp_config);
 163         omap_serial_init();
 164         twl4030_mmc_init(mmc);
 165 }
 166
 167 static void __init omap_ldp_map_io(void)
 168 {
 169         omap2_set_globals_343x();
 170         omap2_map_common_io();
 171 }
 172
 173 MACHINE_START(OMAP_LDP, "OMAP LDP board")
 174         .phys_io        = 0x48000000,
 175         .io_pg_offst    = ((0xd8000000) >> 18) & 0xfffc,
 176         .boot_params    = 0x80000100,
 177         .map_io         = omap_ldp_map_io,
 178         .init_irq       = omap_ldp_init_irq,
 179         .init_machine   = omap_ldp_init,
 180         .timer          = &omap_timer,
 181 MACHINE_END