root/sound/pci/ice1712/amp.c

DEFINITIONS

1. wm_put
2. snd_vt1724_amp_init
3. snd_vt1724_amp_add_controls

   1 // SPDX-License-Identifier: GPL-2.0-or-later
   2 /*
   3  *   ALSA driver for ICEnsemble VT1724 (Envy24HT)
   4  *
   5  *   Lowlevel functions for Advanced Micro Peripherals Ltd AUDIO2000
   6  *
   7  *      Copyright (c) 2000 Jaroslav Kysela <perex@perex.cz>
   8  */      
   9 
  10 #include <linux/delay.h>
  11 #include <linux/interrupt.h>
  12 #include <linux/init.h>
  13 #include <sound/core.h>
  14 
  15 #include "ice1712.h"
  16 #include "envy24ht.h"
  17 #include "amp.h"
  18 
  19 static void wm_put(struct snd_ice1712 *ice, int reg, unsigned short val)
  20 {
  21         unsigned short cval;
  22         cval = (reg << 9) | val;
  23         snd_vt1724_write_i2c(ice, WM_DEV, cval >> 8, cval & 0xff);
  24 }
  25 
  26 static int snd_vt1724_amp_init(struct snd_ice1712 *ice)
  27 {
  28         static const unsigned short wm_inits[] = {
  29                 WM_ATTEN_L,     0x0000, /* 0 db */
  30                 WM_ATTEN_R,     0x0000, /* 0 db */
  31                 WM_DAC_CTRL,    0x0008, /* 24bit I2S */
  32                 WM_INT_CTRL,    0x0001, /* 24bit I2S */ 
  33         };
  34 
  35         unsigned int i;
  36 
  37         /* only use basic functionality for now */
  38 
  39         /* VT1616 6ch codec connected to PSDOUT0 using packed mode */
  40         ice->num_total_dacs = 6;
  41         ice->num_total_adcs = 2;
  42 
  43         /* Chaintech AV-710 has another WM8728 codec connected to PSDOUT4
  44            (shared with the SPDIF output). Mixer control for this codec
  45            is not yet supported. */
  46         if (ice->eeprom.subvendor == VT1724_SUBDEVICE_AV710) {
  47                 for (i = 0; i < ARRAY_SIZE(wm_inits); i += 2)
  48                         wm_put(ice, wm_inits[i], wm_inits[i+1]);
  49         }
  50 
  51         return 0;
  52 }
  53 
  54 static int snd_vt1724_amp_add_controls(struct snd_ice1712 *ice)
  55 {
  56         if (ice->ac97)
  57                 /* we use pins 39 and 41 of the VT1616 for left and right
  58                 read outputs */
  59                 snd_ac97_write_cache(ice->ac97, 0x5a,
  60                         snd_ac97_read(ice->ac97, 0x5a) & ~0x8000);
  61         return 0;
  62 }
  63 
  64 
  65 /* entry point */
  66 struct snd_ice1712_card_info snd_vt1724_amp_cards[] = {
  67         {
  68                 .subvendor = VT1724_SUBDEVICE_AV710,
  69                 .name = "Chaintech AV-710",
  70                 .model = "av710",
  71                 .chip_init = snd_vt1724_amp_init,
  72                 .build_controls = snd_vt1724_amp_add_controls,
  73         },
  74         {
  75                 .subvendor = VT1724_SUBDEVICE_AUDIO2000,
  76                 .name = "AMP Ltd AUDIO2000",
  77                 .model = "amp2000",
  78                 .chip_init = snd_vt1724_amp_init,
  79                 .build_controls = snd_vt1724_amp_add_controls,
  80         },
  81         { } /* terminator */
  82 };
  83