LXR linux/arch/arm/mach-stmp37xx/stmp37xx

   1/*
   2 * Freescale STMP37XX development board support
   3 *
   4 * Embedded Alley Solutions, Inc <source@embeddedalley.com>
   5 *
   6 * Copyright 2008 Freescale Semiconductor, Inc. All Rights Reserved.
   7 * Copyright 2008 Embedded Alley Solutions, Inc All Rights Reserved.
   8 */
   9
  10/*
  11 * The code contained herein is licensed under the GNU General Public
  12 * License. You may obtain a copy of the GNU General Public License
  13 * Version 2 or later at the following locations:
  14 *
  15 * http://www.opensource.org/licenses/gpl-license.html
  16 * http://www.gnu.org/copyleft/gpl.html
  17 */
  18#include <linux/kernel.h>
  19#include <linux/init.h>
  20#include <linux/device.h>
  21#include <linux/platform_device.h>
  22#include <asm/setup.h>
  23#include <asm/mach-types.h>
  24#include <asm/mach/arch.h>
  25
  26#include <mach/stmp3xxx.h>
  27#include <mach/pins.h>
  28#include <mach/pinmux.h>
  29#include "stmp37xx.h"
  30
  31/*
  32 * List of STMP37xx development board specific devices
  33 */
  34static struct platform_device *stmp37xx_devb_devices[] = {
  35        &stmp3xxx_dbguart,
  36        &stmp3xxx_appuart,
  37};
  38
  39static struct pin_desc dbguart_pins_0[] = {
  40        { PINID_PWM0, PIN_FUN3, },
  41        { PINID_PWM1, PIN_FUN3, },
  42};
  43
  44struct pin_desc appuart_pins_0[] = {
  45        { PINID_UART2_CTS, PIN_FUN1, PIN_4MA, PIN_1_8V, 0, },
  46        { PINID_UART2_RTS, PIN_FUN1, PIN_4MA, PIN_1_8V, 0, },
  47        { PINID_UART2_RX, PIN_FUN1, PIN_4MA, PIN_1_8V, 0, },
  48        { PINID_UART2_TX, PIN_FUN1, PIN_4MA, PIN_1_8V, 0, },
  49};
  50
  51static struct pin_group appuart_pins[] = {
  52        [0] = {
  53                .pins           = appuart_pins_0,
  54                .nr_pins        = ARRAY_SIZE(appuart_pins_0),
  55        },
  56        /* 37xx has the only app uart */
  57};
  58
  59static struct pin_group dbguart_pins[] = {
  60        [0] = {
  61                .pins           = dbguart_pins_0,
  62                .nr_pins        = ARRAY_SIZE(dbguart_pins_0),
  63        },
  64};
  65
  66static int dbguart_pins_control(int id, int request)
  67{
  68        int r = 0;
  69
  70        if (request)
  71                r = stmp3xxx_request_pin_group(&dbguart_pins[id], "debug uart");
  72        else
  73                stmp3xxx_release_pin_group(&dbguart_pins[id], "debug uart");
  74        return r;
  75}
  76
  77
  78static void __init stmp37xx_devb_init(void)
  79{
  80        stmp3xxx_pinmux_init(NR_REAL_IRQS);
  81
  82        /* Init STMP3xxx platform */
  83        stmp3xxx_init();
  84
  85        stmp3xxx_dbguart.dev.platform_data = dbguart_pins_control;
  86        stmp3xxx_appuart.dev.platform_data = appuart_pins;
  87
  88        /* Add STMP37xx development board devices */
  89        platform_add_devices(stmp37xx_devb_devices,
  90                        ARRAY_SIZE(stmp37xx_devb_devices));
  91}
  92
  93MACHINE_START(STMP37XX, "STMP37XX")
  94        .phys_io        = 0x80000000,
  95        .io_pg_offst    = ((0xf0000000) >> 18) & 0xfffc,
  96        .boot_params    = 0x40000100,
  97        .map_io         = stmp37xx_map_io,
  98        .init_irq       = stmp37xx_init_irq,
  99        .timer          = &stmp3xxx_timer,
 100        .init_machine   = stmp37xx_devb_init,
 101MACHINE_END
 102