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
  25 #include <mach/hardware.h>
  26 #include <asm/mach-types.h>
  27 #include <asm/mach/arch.h>
  28 #include <asm/mach/map.h>
  29
  30 #include <mach/board-ldp.h>
  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 #define SDP3430_SMC91X_CS       3
  42
  43 static struct resource ldp_smc911x_resources[] = {
  44         [0] = {
  45                 .start  = OMAP34XX_ETHR_START,
  46                 .end    = OMAP34XX_ETHR_START + SZ_4K,
  47                 .flags  = IORESOURCE_MEM,
  48         },
  49         [1] = {
  50                 .start  = 0,
  51                 .end    = 0,
  52                 .flags  = IORESOURCE_IRQ | IORESOURCE_IRQ_LOWLEVEL,
  53         },
  54 };
  55
  56 static struct platform_device ldp_smc911x_device = {
  57         .name           = "smc911x",
  58         .id             = -1,
  59         .num_resources  = ARRAY_SIZE(ldp_smc911x_resources),
  60         .resource       = ldp_smc911x_resources,
  61 };
  62
  63 static struct platform_device *ldp_devices[] __initdata = {
  64         &ldp_smc911x_device,
  65 };
  66
  67 static inline void __init ldp_init_smc911x(void)
  68 {
  69         int eth_cs;
  70         unsigned long cs_mem_base;
  71         int eth_gpio = 0;
  72
  73         eth_cs = LDP_SMC911X_CS;
  74
  75         if (gpmc_cs_request(eth_cs, SZ_16M, &cs_mem_base) < 0) {
  76                 printk(KERN_ERR "Failed to request GPMC mem for smc911x\n");
  77                 return;
  78         }
  79
  80         ldp_smc911x_resources[0].start = cs_mem_base + 0x0;
  81         ldp_smc911x_resources[0].end   = cs_mem_base + 0xf;
  82         udelay(100);
  83
  84         eth_gpio = LDP_SMC911X_GPIO;
  85
  86         ldp_smc911x_resources[1].start = OMAP_GPIO_IRQ(eth_gpio);
  87
  88         if (omap_request_gpio(eth_gpio) < 0) {
  89                 printk(KERN_ERR "Failed to request GPIO%d for smc911x IRQ\n",
  90                                 eth_gpio);
  91                 return;
  92         }
  93         gpio_direction_input(eth_gpio);
  94 }
  95
  96 static void __init omap_ldp_init_irq(void)
  97 {
  98         omap2_init_common_hw();
  99         omap_init_irq();
 100         omap_gpio_init();
 101         ldp_init_smc911x();
 102 }
 103
 104 static struct omap_uart_config ldp_uart_config __initdata = {
 105         .enabled_uarts  = ((1 << 0) | (1 << 1) | (1 << 2)),
 106 };
 107
 108 static struct omap_board_config_kernel ldp_config[] __initdata = {
 109         { OMAP_TAG_UART,        &ldp_uart_config },
 110 };
 111
 112 static int __init omap_i2c_init(void)
 113 {
 114         omap_register_i2c_bus(1, 2600, NULL, 0);
 115         omap_register_i2c_bus(2, 400, NULL, 0);
 116         omap_register_i2c_bus(3, 400, NULL, 0);
 117         return 0;
 118 }
 119
 120 static void __init omap_ldp_init(void)
 121 {
 122         omap_i2c_init();
 123         platform_add_devices(ldp_devices, ARRAY_SIZE(ldp_devices));
 124         omap_board_config = ldp_config;
 125         omap_board_config_size = ARRAY_SIZE(ldp_config);
 126         omap_serial_init();
 127 }
 128
 129 static void __init omap_ldp_map_io(void)
 130 {
 131         omap2_set_globals_343x();
 132         omap2_map_common_io();
 133 }
 134
 135 MACHINE_START(OMAP_LDP, "OMAP LDP board")
 136         .phys_io        = 0x48000000,
 137         .io_pg_offst    = ((0xd8000000) >> 18) & 0xfffc,
 138         .boot_params    = 0x80000100,
 139         .map_io         = omap_ldp_map_io,
 140         .init_irq       = omap_ldp_init_irq,
 141         .init_machine   = omap_ldp_init,
 142         .timer          = &omap_timer,
 143 MACHINE_END