target/linux/ubicom32/files/arch/ubicom32/mach-ip7k/board-ip7500wspkr.c

   1 /*
   2  * arch/ubicom32/mach-ip7k/board-ip7500wspkr.c
   3  *   Support for IP7500 Wireless Speaker board.
   4  *
   5  * This file supports the IP7500 Wireless Speaker board:
   6  *      8007-1210  Rev 1.0
   7  *
   8  * (C) Copyright 2009, Ubicom, Inc.
   9  *
  10  * This file is part of the Ubicom32 Linux Kernel Port.
  11  *
  12  * The Ubicom32 Linux Kernel Port is free software: you can redistribute
  13  * it and/or modify it under the terms of the GNU General Public License
  14  * as published by the Free Software Foundation, either version 2 of the
  15  * License, or (at your option) any later version.
  16  *
  17  * The Ubicom32 Linux Kernel Port is distributed in the hope that it
  18  * will be useful, but WITHOUT ANY WARRANTY; without even the implied
  19  * warranty of MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See
  20  * the GNU General Public License for more details.
  21  *
  22  * You should have received a copy of the GNU General Public License
  23  * along with the Ubicom32 Linux Kernel Port.  If not,
  24  * see <http://www.gnu.org/licenses/>.
  25  */
  26 #include <linux/device.h>
  27 #include <linux/gpio.h>
  28 #include <asm/board.h>
  29
  30 #include <linux/platform_device.h>
  31 #include <asm/audio.h>
  32 #include <linux/i2c.h>
  33 #include <linux/i2c-gpio.h>
  34
  35 static struct i2c_board_info __initdata ip7500wspkr_i2c_board_info[] = {
  36         /*
  37          * U6, CS4350 DAC, address 0x4B
  38          */
  39         {
  40                 .type           = "cs4350",
  41                 .addr           = 0x4B,
  42         },
  43 };
  44
  45 /*
  46  * I2C bus on the board, SDA PE4, SCL PE5
  47  */
  48 static struct i2c_gpio_platform_data ip7500wspkr_i2c_data = {
  49         .sda_pin                = GPIO_RD_5,
  50         .scl_pin                = GPIO_RD_6,
  51         .sda_is_open_drain      = 0,
  52         .scl_is_open_drain      = 0,
  53         .udelay                 = 50,
  54 };
  55
  56 static struct platform_device ip7500wspkr_i2c_device = {
  57         .name   = "i2c-gpio",
  58         .id     = 0,
  59         .dev    = {
  60                 .platform_data = &ip7500wspkr_i2c_data,
  61         },
  62 };
  63
  64 static struct platform_device *ip7500wspkr_devices[] __initdata = {
  65         &ip7500wspkr_i2c_device,
  66 };
  67
  68 /*
  69  * ip7500wspkr_init
  70  *      Called to add the devices which we have on this board
  71  */
  72 static int __init ip7500wspkr_init(void)
  73 {
  74         struct platform_device *audio_dev;
  75         struct platform_device *audio_dev2;
  76
  77         board_init();
  78
  79         ubi_gpio_init();
  80
  81         platform_add_devices(ip7500wspkr_devices, ARRAY_SIZE(ip7500wspkr_devices));
  82
  83         audio_dev = audio_device_alloc("snd-ubi32-cs4350", "audio", "audio-i2sout", 0);
  84         if (audio_dev) {
  85                 ip7500wspkr_i2c_board_info[0].platform_data = audio_dev;
  86         }
  87
  88         audio_dev2 = audio_device_alloc("snd-ubi32-generic", "audio", "audio-spdifout", 0);
  89         if (audio_dev2) {
  90                 platform_device_register(audio_dev2);
  91         }
  92
  93         printk(KERN_INFO "%s: registering i2c resources\n", __FUNCTION__);
  94         i2c_register_board_info(0, ip7500wspkr_i2c_board_info, ARRAY_SIZE(ip7500wspkr_i2c_board_info));
  95
  96         printk(KERN_INFO "IP7500 Wireless Speaker Board\n");
  97
  98         return 0;
  99 }
 100
 101 arch_initcall(ip7500wspkr_init);