84 lines · c
1// SPDX-License-Identifier: GPL-2.0-or-later2/*3 * ALSA driver for ICEnsemble VT1724 (Envy24HT)4 *5 * Lowlevel functions for Advanced Micro Peripherals Ltd AUDIO20006 *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 PSDOUT444 (shared with the SPDIF output). Mixer control for this codec45 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 right58 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