mirror of https://gitee.com/openkylin/linux.git
66 lines
1.8 KiB
C
66 lines
1.8 KiB
C
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/*
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* ALSA driver for ICEnsemble VT1724 (Envy24HT)
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*
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* Lowlevel functions for Advanced Micro Peripherals Ltd AUDIO2000
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*
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* Copyright (c) 2000 Jaroslav Kysela <perex@suse.cz>
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*
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* This program is free software; you can redistribute it and/or modify
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* it under the terms of the GNU General Public License as published by
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* the Free Software Foundation; either version 2 of the License, or
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* (at your option) any later version.
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*
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* This program is distributed in the hope that it will be useful,
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* but WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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* GNU General Public License for more details.
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*
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* You should have received a copy of the GNU General Public License
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* along with this program; if not, write to the Free Software
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* Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
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*
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*/
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#include <sound/driver.h>
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#include <asm/io.h>
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#include <linux/delay.h>
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#include <linux/interrupt.h>
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#include <linux/init.h>
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#include <linux/slab.h>
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#include <sound/core.h>
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#include "ice1712.h"
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#include "amp.h"
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static int __devinit snd_vt1724_amp_init(ice1712_t *ice)
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{
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/* only use basic functionality for now */
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ice->num_total_dacs = 2; /* only PSDOUT0 is connected */
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ice->num_total_adcs = 2;
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return 0;
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}
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static int __devinit snd_vt1724_amp_add_controls(ice1712_t *ice)
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{
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/* we use pins 39 and 41 of the VT1616 for left and right read outputs */
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snd_ac97_write_cache(ice->ac97, 0x5a, snd_ac97_read(ice->ac97, 0x5a) & ~0x8000);
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return 0;
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}
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/* entry point */
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struct snd_ice1712_card_info snd_vt1724_amp_cards[] __devinitdata = {
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{
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.subvendor = VT1724_SUBDEVICE_AUDIO2000,
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.name = "AMP Ltd AUDIO2000",
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.model = "amp2000",
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.chip_init = snd_vt1724_amp_init,
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.build_controls = snd_vt1724_amp_add_controls,
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},
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{ } /* terminator */
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};
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