e7848163aa
Cards with identical PCI ids but no AC97 config in EEPROM do not have the ac97 field initialized. We must check for this case to avoid kernel oops. Signed-off-by: Pavel Hofman <pavel.hofman@ivitera.com> Cc: <stable@kernel.org> Signed-off-by: Takashi Iwai <tiwai@suse.de>
98 lines
2.8 KiB
C
98 lines
2.8 KiB
C
/*
|
|
* ALSA driver for ICEnsemble VT1724 (Envy24HT)
|
|
*
|
|
* Lowlevel functions for Advanced Micro Peripherals Ltd AUDIO2000
|
|
*
|
|
* Copyright (c) 2000 Jaroslav Kysela <perex@perex.cz>
|
|
*
|
|
* This program is free software; you can redistribute it and/or modify
|
|
* it under the terms of the GNU General Public License as published by
|
|
* the Free Software Foundation; either version 2 of the License, or
|
|
* (at your option) any later version.
|
|
*
|
|
* This program is distributed in the hope that it will be useful,
|
|
* but WITHOUT ANY WARRANTY; without even the implied warranty of
|
|
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
|
|
* GNU General Public License for more details.
|
|
*
|
|
* You should have received a copy of the GNU General Public License
|
|
* along with this program; if not, write to the Free Software
|
|
* Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
|
|
*
|
|
*/
|
|
|
|
#include <asm/io.h>
|
|
#include <linux/delay.h>
|
|
#include <linux/interrupt.h>
|
|
#include <linux/init.h>
|
|
#include <sound/core.h>
|
|
|
|
#include "ice1712.h"
|
|
#include "envy24ht.h"
|
|
#include "amp.h"
|
|
|
|
static void wm_put(struct snd_ice1712 *ice, int reg, unsigned short val)
|
|
{
|
|
unsigned short cval;
|
|
cval = (reg << 9) | val;
|
|
snd_vt1724_write_i2c(ice, WM_DEV, cval >> 8, cval & 0xff);
|
|
}
|
|
|
|
static int __devinit snd_vt1724_amp_init(struct snd_ice1712 *ice)
|
|
{
|
|
static const unsigned short wm_inits[] = {
|
|
WM_ATTEN_L, 0x0000, /* 0 db */
|
|
WM_ATTEN_R, 0x0000, /* 0 db */
|
|
WM_DAC_CTRL, 0x0008, /* 24bit I2S */
|
|
WM_INT_CTRL, 0x0001, /* 24bit I2S */
|
|
};
|
|
|
|
unsigned int i;
|
|
|
|
/* only use basic functionality for now */
|
|
|
|
/* VT1616 6ch codec connected to PSDOUT0 using packed mode */
|
|
ice->num_total_dacs = 6;
|
|
ice->num_total_adcs = 2;
|
|
|
|
/* Chaintech AV-710 has another WM8728 codec connected to PSDOUT4
|
|
(shared with the SPDIF output). Mixer control for this codec
|
|
is not yet supported. */
|
|
if (ice->eeprom.subvendor == VT1724_SUBDEVICE_AV710) {
|
|
for (i = 0; i < ARRAY_SIZE(wm_inits); i += 2)
|
|
wm_put(ice, wm_inits[i], wm_inits[i+1]);
|
|
}
|
|
|
|
return 0;
|
|
}
|
|
|
|
static int __devinit snd_vt1724_amp_add_controls(struct snd_ice1712 *ice)
|
|
{
|
|
if (ice->ac97)
|
|
/* we use pins 39 and 41 of the VT1616 for left and right
|
|
read outputs */
|
|
snd_ac97_write_cache(ice->ac97, 0x5a,
|
|
snd_ac97_read(ice->ac97, 0x5a) & ~0x8000);
|
|
return 0;
|
|
}
|
|
|
|
|
|
/* entry point */
|
|
struct snd_ice1712_card_info snd_vt1724_amp_cards[] __devinitdata = {
|
|
{
|
|
.subvendor = VT1724_SUBDEVICE_AV710,
|
|
.name = "Chaintech AV-710",
|
|
.model = "av710",
|
|
.chip_init = snd_vt1724_amp_init,
|
|
.build_controls = snd_vt1724_amp_add_controls,
|
|
},
|
|
{
|
|
.subvendor = VT1724_SUBDEVICE_AUDIO2000,
|
|
.name = "AMP Ltd AUDIO2000",
|
|
.model = "amp2000",
|
|
.chip_init = snd_vt1724_amp_init,
|
|
.build_controls = snd_vt1724_amp_add_controls,
|
|
},
|
|
{ } /* terminator */
|
|
};
|
|
|