arch/arm/mach-omap2/board-rx51.c

   1 /*
   2  * Board support file for Nokia N900 (aka RX-51).
   3  *
   4  * Copyright (C) 2007, 2008 Nokia
   5  *
   6  * This program is free software; you can redistribute it and/or modify
   7  * it under the terms of the GNU General Public License version 2 as
   8  * published by the Free Software Foundation.
   9  */
  10
  11 #include <linux/kernel.h>
  12 #include <linux/init.h>
  13 #include <linux/platform_device.h>
  14 #include <linux/delay.h>
  15 #include <linux/err.h>
  16 #include <linux/clk.h>
  17 #include <linux/io.h>
  18 #include <linux/gpio.h>
  19 #include <linux/leds.h>
  20 #include <linux/usb/musb.h>
  21 #include <linux/platform_data/spi-omap2-mcspi.h>
  22
  23 #include <asm/mach-types.h>
  24 #include <asm/mach/arch.h>
  25 #include <asm/mach/map.h>
  26
  27 #include <linux/omap-dma.h>
  28
  29 #include "common.h"
  30 #include "mux.h"
  31 #include "gpmc.h"
  32 #include "pm.h"
  33 #include "sdram-nokia.h"
  34
  35 #define RX51_GPIO_SLEEP_IND 162
  36
  37 static struct gpio_led gpio_leds[] = {
  38         {
  39                 .name   = "sleep_ind",
  40                 .gpio   = RX51_GPIO_SLEEP_IND,
  41         },
  42 };
  43
  44 static struct gpio_led_platform_data gpio_led_info = {
  45         .leds           = gpio_leds,
  46         .num_leds       = ARRAY_SIZE(gpio_leds),
  47 };
  48
  49 static struct platform_device leds_gpio = {
  50         .name   = "leds-gpio",
  51         .id     = -1,
  52         .dev    = {
  53                 .platform_data  = &gpio_led_info,
  54         },
  55 };
  56
  57 /*
  58  * cpuidle C-states definition for rx51.
  59  *
  60  * The 'exit_latency' field is the sum of sleep
  61  * and wake-up latencies.
  62
  63     ---------------------------------------------
  64    | state |  exit_latency  |  target_residency  |
  65     ---------------------------------------------
  66    |  C1   |    110 + 162   |            5       |
  67    |  C2   |    106 + 180   |          309       |
  68    |  C3   |    107 + 410   |        46057       |
  69    |  C4   |    121 + 3374  |        46057       |
  70    |  C5   |    855 + 1146  |        46057       |
  71    |  C6   |   7580 + 4134  |       484329       |
  72    |  C7   |   7505 + 15274 |       484329       |
  73     ---------------------------------------------
  74
  75 */
  76
  77 extern void __init rx51_peripherals_init(void);
  78
  79 #ifdef CONFIG_OMAP_MUX
  80 static struct omap_board_mux board_mux[] __initdata = {
  81         { .reg_offset = OMAP_MUX_TERMINATOR },
  82 };
  83 #endif
  84
  85 static struct omap_musb_board_data musb_board_data = {
  86         .interface_type         = MUSB_INTERFACE_ULPI,
  87         .mode                   = MUSB_PERIPHERAL,
  88         .power                  = 0,
  89 };
  90
  91 static void __init rx51_init(void)
  92 {
  93         struct omap_sdrc_params *sdrc_params;
  94
  95         omap3_mux_init(board_mux, OMAP_PACKAGE_CBB);
  96         omap_serial_init();
  97
  98         sdrc_params = nokia_get_sdram_timings();
  99         omap_sdrc_init(sdrc_params, sdrc_params);
 100
 101         usb_musb_init(&musb_board_data);
 102         rx51_peripherals_init();
 103
 104         /* Ensure SDRC pins are mux'd for self-refresh */
 105         omap_mux_init_signal("sdrc_cke0", OMAP_PIN_OUTPUT);
 106         omap_mux_init_signal("sdrc_cke1", OMAP_PIN_OUTPUT);
 107
 108         platform_device_register(&leds_gpio);
 109 }
 110
 111 static void __init rx51_reserve(void)
 112 {
 113         omap_reserve();
 114 }
 115
 116 MACHINE_START(NOKIA_RX51, "Nokia RX-51 board")
 117         /* Maintainer: Lauri Leukkunen <lauri.leukkunen@nokia.com> */
 118         .atag_offset    = 0x100,
 119         .reserve        = rx51_reserve,
 120         .map_io         = omap3_map_io,
 121         .init_early     = omap3430_init_early,
 122         .init_irq       = omap3_init_irq,
 123         .handle_irq     = omap3_intc_handle_irq,
 124         .init_machine   = rx51_init,
 125         .init_late      = omap3430_init_late,
 126         .init_time      = omap3_sync32k_timer_init,
 127         .restart        = omap3xxx_restart,
 128 MACHINE_END