arch/arm/mach-stmp37xx/stmp37xx_devb.c

   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  */
  34 static struct platform_device *stmp37xx_devb_devices[] = {
  35         &stmp3xxx_dbguart,
  36         &stmp3xxx_appuart,
  37 };
  38
  39 static struct pin_desc dbguart_pins_0[] = {
  40         { PINID_PWM0, PIN_FUN3, },
  41         { PINID_PWM1, PIN_FUN3, },
  42 };
  43
  44 struct 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
  51 static 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
  59 static struct pin_group dbguart_pins[] = {
  60         [0] = {
  61                 .pins           = dbguart_pins_0,
  62                 .nr_pins        = ARRAY_SIZE(dbguart_pins_0),
  63         },
  64 };
  65
  66 static 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
  78 static 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
  93 MACHINE_START(STMP37XX, "STMP37XX")
  94         .boot_params    = 0x40000100,
  95         .map_io         = stmp37xx_map_io,
  96         .init_irq       = stmp37xx_init_irq,
  97         .timer          = &stmp3xxx_timer,
  98         .init_machine   = stmp37xx_devb_init,
  99 MACHINE_END