arch/arm/mach-omap2/board-n800-audio.c

   1 /*
   2  * linux/arch/arm/mach-omap2/board-n800-audio.c
   3  *
   4  * Copyright (C) 2006 Nokia Corporation
   5  * Contact: Juha Yrjola
   6  *          Jarkko Nikula <jarkko.nikula@nokia.com>
   7  *
   8  * This program is free software; you can redistribute it and/or
   9  * modify it under the terms of the GNU General Public License
  10  * version 2 as published by the Free Software Foundation.
  11  *
  12  * This program is distributed in the hope that it will be useful, but
  13  * WITHOUT ANY WARRANTY; without even the implied warranty of
  14  * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
  15  * General Public License for more details.
  16  *
  17  * You should have received a copy of the GNU General Public License
  18  * along with this program; if not, write to the Free Software
  19  * Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA
  20  * 02110-1301 USA
  21  *
  22  */
  23
  24 #include <linux/err.h>
  25 #include <linux/clk.h>
  26 #include <linux/platform_device.h>
  27 #include <linux/spi/tsc2301.h>
  28
  29 #include <asm/io.h>
  30 #include <mach/eac.h>
  31
  32 #include <mach/dsp_common.h>
  33
  34 void __init n800_audio_init(struct tsc2301_platform_data *tc)
  35 {
  36 }
  37
  38 #ifdef CONFIG_OMAP_DSP
  39
  40 int n800_audio_enable(struct dsp_kfunc_device *kdev, int stage)
  41 {
  42 #ifdef AUDIO_ENABLED
  43         unsigned long flags;
  44         int do_enable = 0;
  45
  46         spin_lock_irqsave(&audio_lock, flags);
  47
  48         pr_debug("DSP power up request (audio codec %sinitialized)\n",
  49                  audio_ok ? "" : "not ");
  50
  51         if (enable_audio)
  52                 goto out;
  53         enable_audio = 1;
  54         if (audio_ok)
  55                 do_enable = 1;
  56 out:
  57         spin_unlock_irqrestore(&audio_lock, flags);
  58         if (do_enable)
  59                 eac_set_mode(eac_device, 1, 1);
  60 #endif
  61         return 0;
  62 }
  63
  64 int n800_audio_disable(struct dsp_kfunc_device *kdev, int stage)
  65 {
  66 #ifdef AUDIO_ENABLED
  67         unsigned long flags;
  68         int do_disable = 0;
  69
  70         spin_lock_irqsave(&audio_lock, flags);
  71
  72         pr_debug("DSP power down request (audio codec %sinitialized)\n",
  73                 audio_ok ? "" : "not ");
  74
  75         if (!enable_audio)
  76                 goto out;
  77         enable_audio = 0;
  78         if (audio_ok)
  79                 do_disable = 1;
  80 out:
  81         spin_unlock_irqrestore(&audio_lock, flags);
  82         if (do_disable)
  83                 eac_set_mode(eac_device, 0, 0);
  84 #endif
  85         return 0;
  86 }
  87
  88 #endif /* CONFIG_OMAP_DSP */