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 <sound/core.h>
  29
  30#include "ice1712.h"
  31#include "envy24ht.h"
  32#include "amp.h"
  33
  34static void wm_put(struct snd_ice1712 *ice, int reg, unsigned short val)
  35{
  36        unsigned short cval;
  37        cval = (reg << 9) | val;
  38        snd_vt1724_write_i2c(ice, WM_DEV, cval >> 8, cval & 0xff);
  39}
  40
  41static int __devinit snd_vt1724_amp_init(struct snd_ice1712 *ice)
  42{
  43        static const unsigned short wm_inits[] = {
  44                WM_ATTEN_L,     0x0000, /* 0 db */
  45                WM_ATTEN_R,     0x0000, /* 0 db */
  46                WM_DAC_CTRL,    0x0008, /* 24bit I2S */
  47                WM_INT_CTRL,    0x0001, /* 24bit I2S */ 
  48        };
  49
  50        unsigned int i;
  51
  52        /* only use basic functionality for now */
  53
  54        /* VT1616 6ch codec connected to PSDOUT0 using packed mode */
  55        ice->num_total_dacs = 6;
  56        ice->num_total_adcs = 2;
  57
  58        /* Chaintech AV-710 has another WM8728 codec connected to PSDOUT4
  59           (shared with the SPDIF output). Mixer control for this codec
  60           is not yet supported. */
  61        if (ice->eeprom.subvendor == VT1724_SUBDEVICE_AV710) {
  62                for (i = 0; i < ARRAY_SIZE(wm_inits); i += 2)
  63                        wm_put(ice, wm_inits[i], wm_inits[i+1]);
  64        }
  65
  66        return 0;
  67}
  68
  69static int __devinit snd_vt1724_amp_add_controls(struct snd_ice1712 *ice)
  70{
  71        /* we use pins 39 and 41 of the VT1616 for left and right read outputs */
  72        snd_ac97_write_cache(ice->ac97, 0x5a, snd_ac97_read(ice->ac97, 0x5a) & ~0x8000);
  73        return 0;
  74}
  75
  76
  77/* entry point */
  78struct snd_ice1712_card_info snd_vt1724_amp_cards[] __devinitdata = {
  79        {
  80                .subvendor = VT1724_SUBDEVICE_AV710,
  81                .name = "Chaintech AV-710",
  82                .model = "av710",
  83                .chip_init = snd_vt1724_amp_init,
  84                .build_controls = snd_vt1724_amp_add_controls,
  85        },
  86        {
  87                .subvendor = VT1724_SUBDEVICE_AUDIO2000,
  88                .name = "AMP Ltd AUDIO2000",
  89                .model = "amp2000",
  90                .chip_init = snd_vt1724_amp_init,
  91                .build_controls = snd_vt1724_amp_add_controls,
  92        },
  93        { } /* terminator */
  94};
  95
  96