LXR linux/sound/pci/ice1712/amp.c

   1/*
   2 *   ALSA driver for ICEnsemble VT1724 (Envy24HT)
   3 *
   4 *   Lowlevel functions for Advanced Micro Peripherals Ltd AUDIO2000
   5 *
   6 *      Copyright (c) 2000 Jaroslav Kysela <perex@perex.cz>
   7 *
   8 *   This program is free software; you can redistribute it and/or modify
   9 *   it under the terms of the GNU General Public License as published by
  10 *   the Free Software Foundation; either version 2 of the License, or
  11 *   (at your option) any later version.
  12 *
  13 *   This program is distributed in the hope that it will be useful,
  14 *   but WITHOUT ANY WARRANTY; without even the implied warranty of
  15 *   MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
  16 *   GNU General Public License for more details.
  17 *
  18 *   You should have received a copy of the GNU General Public License
  19 *   along with this program; if not, write to the Free Software
  20 *   Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA  02111-1307 USA
  21 *
  22 */      
  23
  24#include <asm/io.h>
  25#include <linux/delay.h>
  26#include <linux/interrupt.h>
  27#include <linux/init.h>
  28#include <linux/slab.h>
  29#include <sound/core.h>
  30
  31#include "ice1712.h"
  32#include "envy24ht.h"
  33#include "amp.h"
  34
  35static void wm_put(struct snd_ice1712 *ice, int reg, unsigned short val)
  36{
  37        unsigned short cval;
  38        cval = (reg << 9) | val;
  39        snd_vt1724_write_i2c(ice, WM_DEV, cval >> 8, cval & 0xff);
  40}
  41
  42static int __devinit snd_vt1724_amp_init(struct snd_ice1712 *ice)
  43{
  44        static const unsigned short wm_inits[] = {
  45                WM_ATTEN_L,     0x0000, /* 0 db */
  46                WM_ATTEN_R,     0x0000, /* 0 db */
  47                WM_DAC_CTRL,    0x0008, /* 24bit I2S */
  48                WM_INT_CTRL,    0x0001, /* 24bit I2S */ 
  49        };
  50
  51        unsigned int i;
  52
  53        /* only use basic functionality for now */
  54
  55        /* VT1616 6ch codec connected to PSDOUT0 using packed mode */
  56        ice->num_total_dacs = 6;
  57        ice->num_total_adcs = 2;
  58
  59        /* Chaintech AV-710 has another WM8728 codec connected to PSDOUT4
  60           (shared with the SPDIF output). Mixer control for this codec
  61           is not yet supported. */
  62        if (ice->eeprom.subvendor == VT1724_SUBDEVICE_AV710) {
  63                for (i = 0; i < ARRAY_SIZE(wm_inits); i += 2)
  64                        wm_put(ice, wm_inits[i], wm_inits[i+1]);
  65        }
  66
  67        return 0;
  68}
  69
  70static int __devinit snd_vt1724_amp_add_controls(struct snd_ice1712 *ice)
  71{
  72        /* we use pins 39 and 41 of the VT1616 for left and right read outputs */
  73        snd_ac97_write_cache(ice->ac97, 0x5a, snd_ac97_read(ice->ac97, 0x5a) & ~0x8000);
  74        return 0;
  75}
  76
  77
  78/* entry point */
  79struct snd_ice1712_card_info snd_vt1724_amp_cards[] __devinitdata = {
  80        {
  81                .subvendor = VT1724_SUBDEVICE_AV710,
  82                .name = "Chaintech AV-710",
  83                .model = "av710",
  84                .chip_init = snd_vt1724_amp_init,
  85                .build_controls = snd_vt1724_amp_add_controls,
  86        },
  87        {
  88                .subvendor = VT1724_SUBDEVICE_AUDIO2000,
  89                .name = "AMP Ltd AUDIO2000",
  90                .model = "amp2000",
  91                .chip_init = snd_vt1724_amp_init,
  92                .build_controls = snd_vt1724_amp_add_controls,
  93        },
  94        { } /* terminator */
  95};
  96
  97