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 19static 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 26static 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 54static 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 */ 66struct 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 84