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alistair23-linux/sound/pci/ac97/ac97_proc.c
Thadeu Lima de Souza Cascardo 328cc6dfaa ALSA: AC97: Print AC97 flags in proc file to make debug it easier 
While debugging some code paths in AC97 codec patches and its suspend
and resume functions, getting to know the flags has proved useful to
follow those code paths.

Signed-off-by: Thadeu Lima de Souza Cascardo <cascardo@holoscopio.com>
Signed-off-by: Takashi Iwai <tiwai@suse.de>
2009-01-29 08:38:36 +01:00

492 lines
18 KiB
C
Raw Blame History

/*
* Copyright (c) by Jaroslav Kysela <perex@perex.cz>
* Universal interface for Audio Codec '97
*
* For more details look to AC '97 component specification revision 2.2
* by Intel Corporation (http://developer.intel.com).
*
*
* 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 <linux/slab.h>
#include <linux/mutex.h>
#include <sound/core.h>
#include <sound/ac97_codec.h>
#include <sound/asoundef.h>
#include "ac97_local.h"
#include "ac97_id.h"
/*
* proc interface
*/
static void snd_ac97_proc_read_functions(struct snd_ac97 *ac97, struct snd_info_buffer *buffer)
{
int header = 0, function;
unsigned short info, sense_info;
static const char *function_names[12] = {
"Master Out", "AUX Out", "Center/LFE Out", "SPDIF Out",
"Phone In", "Mic 1", "Mic 2", "Line In", "CD In", "Video In",
"Aux In", "Mono Out"
};
static const char *locations[8] = {
"Rear I/O Panel", "Front Panel", "Motherboard", "Dock/External",
"reserved", "reserved", "reserved", "NC/unused"
};
for (function = 0; function < 12; ++function) {
snd_ac97_write(ac97, AC97_FUNC_SELECT, function << 1);
info = snd_ac97_read(ac97, AC97_FUNC_INFO);
if (!(info & 0x0001))
continue;
if (!header) {
snd_iprintf(buffer, "\n Gain Inverted Buffer delay Location\n");
header = 1;
}
sense_info = snd_ac97_read(ac97, AC97_SENSE_INFO);
snd_iprintf(buffer, "%-17s: %3d.%d dBV %c %2d/fs %s\n",
function_names[function],
(info & 0x8000 ? -1 : 1) * ((info & 0x7000) >> 12) * 3 / 2,
((info & 0x0800) >> 11) * 5,
info & 0x0400 ? 'X' : '-',
(info & 0x03e0) >> 5,
locations[sense_info >> 13]);
}
}
static const char *snd_ac97_stereo_enhancements[] =
{
/* 0 */ "No 3D Stereo Enhancement",
/* 1 */ "Analog Devices Phat Stereo",
/* 2 */ "Creative Stereo Enhancement",
/* 3 */ "National Semi 3D Stereo Enhancement",
/* 4 */ "YAMAHA Ymersion",
/* 5 */ "BBE 3D Stereo Enhancement",
/* 6 */ "Crystal Semi 3D Stereo Enhancement",
/* 7 */ "Qsound QXpander",
/* 8 */ "Spatializer 3D Stereo Enhancement",
/* 9 */ "SRS 3D Stereo Enhancement",
/* 10 */ "Platform Tech 3D Stereo Enhancement",
/* 11 */ "AKM 3D Audio",
/* 12 */ "Aureal Stereo Enhancement",
/* 13 */ "Aztech 3D Enhancement",
/* 14 */ "Binaura 3D Audio Enhancement",
/* 15 */ "ESS Technology Stereo Enhancement",
/* 16 */ "Harman International VMAx",
/* 17 */ "Nvidea/IC Ensemble/KS Waves 3D Stereo Enhancement",
/* 18 */ "Philips Incredible Sound",
/* 19 */ "Texas Instruments 3D Stereo Enhancement",
/* 20 */ "VLSI Technology 3D Stereo Enhancement",
/* 21 */ "TriTech 3D Stereo Enhancement",
/* 22 */ "Realtek 3D Stereo Enhancement",
/* 23 */ "Samsung 3D Stereo Enhancement",
/* 24 */ "Wolfson Microelectronics 3D Enhancement",
/* 25 */ "Delta Integration 3D Enhancement",
/* 26 */ "SigmaTel 3D Enhancement",
/* 27 */ "IC Ensemble/KS Waves",
/* 28 */ "Rockwell 3D Stereo Enhancement",
/* 29 */ "Reserved 29",
/* 30 */ "Reserved 30",
/* 31 */ "Reserved 31"
};
static void snd_ac97_proc_read_main(struct snd_ac97 *ac97, struct snd_info_buffer *buffer, int subidx)
{
char name[64];
unsigned short val, tmp, ext, mext;
static const char *spdif_slots[4] = { " SPDIF=3/4", " SPDIF=7/8", " SPDIF=6/9", " SPDIF=10/11" };
static const char *spdif_rates[4] = { " Rate=44.1kHz", " Rate=res", " Rate=48kHz", " Rate=32kHz" };
static const char *spdif_rates_cs4205[4] = { " Rate=48kHz", " Rate=44.1kHz", " Rate=res", " Rate=res" };
static const char *double_rate_slots[4] = { "10/11", "7/8", "reserved", "reserved" };
snd_ac97_get_name(NULL, ac97->id, name, 0);
snd_iprintf(buffer, "%d-%d/%d: %s\n\n", ac97->addr, ac97->num, subidx, name);
if ((ac97->scaps & AC97_SCAP_AUDIO) == 0)
goto __modem;
snd_iprintf(buffer, "PCI Subsys Vendor: 0x%04x\n",
ac97->subsystem_vendor);
snd_iprintf(buffer, "PCI Subsys Device: 0x%04x\n\n",
ac97->subsystem_device);
snd_iprintf(buffer, "Flags: %x\n", ac97->flags);
if ((ac97->ext_id & AC97_EI_REV_MASK) >= AC97_EI_REV_23) {
val = snd_ac97_read(ac97, AC97_INT_PAGING);
snd_ac97_update_bits(ac97, AC97_INT_PAGING,
AC97_PAGE_MASK, AC97_PAGE_1);
tmp = snd_ac97_read(ac97, AC97_CODEC_CLASS_REV);
snd_iprintf(buffer, "Revision : 0x%02x\n", tmp & 0xff);
snd_iprintf(buffer, "Compat. Class : 0x%02x\n", (tmp >> 8) & 0x1f);
snd_iprintf(buffer, "Subsys. Vendor ID: 0x%04x\n",
snd_ac97_read(ac97, AC97_PCI_SVID));
snd_iprintf(buffer, "Subsys. ID : 0x%04x\n\n",
snd_ac97_read(ac97, AC97_PCI_SID));
snd_ac97_update_bits(ac97, AC97_INT_PAGING,
AC97_PAGE_MASK, val & AC97_PAGE_MASK);
}
// val = snd_ac97_read(ac97, AC97_RESET);
val = ac97->caps;
snd_iprintf(buffer, "Capabilities :%s%s%s%s%s%s\n",
val & AC97_BC_DEDICATED_MIC ? " -dedicated MIC PCM IN channel-" : "",
val & AC97_BC_RESERVED1 ? " -reserved1-" : "",
val & AC97_BC_BASS_TREBLE ? " -bass & treble-" : "",
val & AC97_BC_SIM_STEREO ? " -simulated stereo-" : "",
val & AC97_BC_HEADPHONE ? " -headphone out-" : "",
val & AC97_BC_LOUDNESS ? " -loudness-" : "");
tmp = ac97->caps & AC97_BC_DAC_MASK;
snd_iprintf(buffer, "DAC resolution : %s%s%s%s\n",
tmp == AC97_BC_16BIT_DAC ? "16-bit" : "",
tmp == AC97_BC_18BIT_DAC ? "18-bit" : "",
tmp == AC97_BC_20BIT_DAC ? "20-bit" : "",
tmp == AC97_BC_DAC_MASK ? "???" : "");
tmp = ac97->caps & AC97_BC_ADC_MASK;
snd_iprintf(buffer, "ADC resolution : %s%s%s%s\n",
tmp == AC97_BC_16BIT_ADC ? "16-bit" : "",
tmp == AC97_BC_18BIT_ADC ? "18-bit" : "",
tmp == AC97_BC_20BIT_ADC ? "20-bit" : "",
tmp == AC97_BC_ADC_MASK ? "???" : "");
snd_iprintf(buffer, "3D enhancement : %s\n",
snd_ac97_stereo_enhancements[(val >> 10) & 0x1f]);
snd_iprintf(buffer, "\nCurrent setup\n");
val = snd_ac97_read(ac97, AC97_MIC);
snd_iprintf(buffer, "Mic gain : %s [%s]\n", val & 0x0040 ? "+20dB" : "+0dB", ac97->regs[AC97_MIC] & 0x0040 ? "+20dB" : "+0dB");
val = snd_ac97_read(ac97, AC97_GENERAL_PURPOSE);
snd_iprintf(buffer, "POP path : %s 3D\n"
"Sim. stereo : %s\n"
"3D enhancement : %s\n"
"Loudness : %s\n"
"Mono output : %s\n"
"Mic select : %s\n"
"ADC/DAC loopback : %s\n",
val & 0x8000 ? "post" : "pre",
val & 0x4000 ? "on" : "off",
val & 0x2000 ? "on" : "off",
val & 0x1000 ? "on" : "off",
val & 0x0200 ? "Mic" : "MIX",
val & 0x0100 ? "Mic2" : "Mic1",
val & 0x0080 ? "on" : "off");
if (ac97->ext_id & AC97_EI_DRA)
snd_iprintf(buffer, "Double rate slots: %s\n",
double_rate_slots[(val >> 10) & 3]);
ext = snd_ac97_read(ac97, AC97_EXTENDED_ID);
if (ext == 0)
goto __modem;
snd_iprintf(buffer, "Extended ID : codec=%i rev=%i%s%s%s%s DSA=%i%s%s%s%s\n",
(ext & AC97_EI_ADDR_MASK) >> AC97_EI_ADDR_SHIFT,
(ext & AC97_EI_REV_MASK) >> AC97_EI_REV_SHIFT,
ext & AC97_EI_AMAP ? " AMAP" : "",
ext & AC97_EI_LDAC ? " LDAC" : "",
ext & AC97_EI_SDAC ? " SDAC" : "",
ext & AC97_EI_CDAC ? " CDAC" : "",
(ext & AC97_EI_DACS_SLOT_MASK) >> AC97_EI_DACS_SLOT_SHIFT,
ext & AC97_EI_VRM ? " VRM" : "",
ext & AC97_EI_SPDIF ? " SPDIF" : "",
ext & AC97_EI_DRA ? " DRA" : "",
ext & AC97_EI_VRA ? " VRA" : "");
val = snd_ac97_read(ac97, AC97_EXTENDED_STATUS);
snd_iprintf(buffer, "Extended status :%s%s%s%s%s%s%s%s%s%s%s%s%s%s\n",
val & AC97_EA_PRL ? " PRL" : "",
val & AC97_EA_PRK ? " PRK" : "",
val & AC97_EA_PRJ ? " PRJ" : "",
val & AC97_EA_PRI ? " PRI" : "",
val & AC97_EA_SPCV ? " SPCV" : "",
val & AC97_EA_MDAC ? " MADC" : "",
val & AC97_EA_LDAC ? " LDAC" : "",
val & AC97_EA_SDAC ? " SDAC" : "",
val & AC97_EA_CDAC ? " CDAC" : "",
ext & AC97_EI_SPDIF ? spdif_slots[(val & AC97_EA_SPSA_SLOT_MASK) >> AC97_EA_SPSA_SLOT_SHIFT] : "",
val & AC97_EA_VRM ? " VRM" : "",
val & AC97_EA_SPDIF ? " SPDIF" : "",
val & AC97_EA_DRA ? " DRA" : "",
val & AC97_EA_VRA ? " VRA" : "");
if (ext & AC97_EI_VRA) { /* VRA */
val = snd_ac97_read(ac97, AC97_PCM_FRONT_DAC_RATE);
snd_iprintf(buffer, "PCM front DAC : %iHz\n", val);
if (ext & AC97_EI_SDAC) {
val = snd_ac97_read(ac97, AC97_PCM_SURR_DAC_RATE);
snd_iprintf(buffer, "PCM Surr DAC : %iHz\n", val);
}
if (ext & AC97_EI_LDAC) {
val = snd_ac97_read(ac97, AC97_PCM_LFE_DAC_RATE);
snd_iprintf(buffer, "PCM LFE DAC : %iHz\n", val);
}
val = snd_ac97_read(ac97, AC97_PCM_LR_ADC_RATE);
snd_iprintf(buffer, "PCM ADC : %iHz\n", val);
}
if (ext & AC97_EI_VRM) {
val = snd_ac97_read(ac97, AC97_PCM_MIC_ADC_RATE);
snd_iprintf(buffer, "PCM MIC ADC : %iHz\n", val);
}
if ((ext & AC97_EI_SPDIF) || (ac97->flags & AC97_CS_SPDIF) ||
(ac97->id == AC97_ID_YMF743)) {
if (ac97->flags & AC97_CS_SPDIF)
val = snd_ac97_read(ac97, AC97_CSR_SPDIF);
else if (ac97->id == AC97_ID_YMF743) {
val = snd_ac97_read(ac97, AC97_YMF7X3_DIT_CTRL);
val = 0x2000 | (val & 0xff00) >> 4 | (val & 0x38) >> 2;
} else
val = snd_ac97_read(ac97, AC97_SPDIF);
snd_iprintf(buffer, "SPDIF Control :%s%s%s%s Category=0x%x Generation=%i%s%s%s\n",
val & AC97_SC_PRO ? " PRO" : " Consumer",
val & AC97_SC_NAUDIO ? " Non-audio" : " PCM",
val & AC97_SC_COPY ? "" : " Copyright",
val & AC97_SC_PRE ? " Preemph50/15" : "",
(val & AC97_SC_CC_MASK) >> AC97_SC_CC_SHIFT,
(val & AC97_SC_L) >> 11,
(ac97->flags & AC97_CS_SPDIF) ?
spdif_rates_cs4205[(val & AC97_SC_SPSR_MASK) >> AC97_SC_SPSR_SHIFT] :
spdif_rates[(val & AC97_SC_SPSR_MASK) >> AC97_SC_SPSR_SHIFT],
(ac97->flags & AC97_CS_SPDIF) ?
(val & AC97_SC_DRS ? " Validity" : "") :
(val & AC97_SC_DRS ? " DRS" : ""),
(ac97->flags & AC97_CS_SPDIF) ?
(val & AC97_SC_V ? " Enabled" : "") :
(val & AC97_SC_V ? " Validity" : ""));
/* ALC650 specific*/
if ((ac97->id & 0xfffffff0) == 0x414c4720 &&
(snd_ac97_read(ac97, AC97_ALC650_CLOCK) & 0x01)) {
val = snd_ac97_read(ac97, AC97_ALC650_SPDIF_INPUT_STATUS2);
if (val & AC97_ALC650_CLOCK_LOCK) {
val = snd_ac97_read(ac97, AC97_ALC650_SPDIF_INPUT_STATUS1);
snd_iprintf(buffer, "SPDIF In Status :%s%s%s%s Category=0x%x Generation=%i",
val & AC97_ALC650_PRO ? " PRO" : " Consumer",
val & AC97_ALC650_NAUDIO ? " Non-audio" : " PCM",
val & AC97_ALC650_COPY ? "" : " Copyright",
val & AC97_ALC650_PRE ? " Preemph50/15" : "",
(val & AC97_ALC650_CC_MASK) >> AC97_ALC650_CC_SHIFT,
(val & AC97_ALC650_L) >> 15);
val = snd_ac97_read(ac97, AC97_ALC650_SPDIF_INPUT_STATUS2);
snd_iprintf(buffer, "%s Accuracy=%i%s%s\n",
spdif_rates[(val & AC97_ALC650_SPSR_MASK) >> AC97_ALC650_SPSR_SHIFT],
(val & AC97_ALC650_CLOCK_ACCURACY) >> AC97_ALC650_CLOCK_SHIFT,
(val & AC97_ALC650_CLOCK_LOCK ? " Locked" : " Unlocked"),
(val & AC97_ALC650_V ? " Validity?" : ""));
} else {
snd_iprintf(buffer, "SPDIF In Status : Not Locked\n");
}
}
}
if ((ac97->ext_id & AC97_EI_REV_MASK) >= AC97_EI_REV_23) {
val = snd_ac97_read(ac97, AC97_INT_PAGING);
snd_ac97_update_bits(ac97, AC97_INT_PAGING,
AC97_PAGE_MASK, AC97_PAGE_1);
snd_ac97_proc_read_functions(ac97, buffer);
snd_ac97_update_bits(ac97, AC97_INT_PAGING,
AC97_PAGE_MASK, val & AC97_PAGE_MASK);
}
__modem:
mext = snd_ac97_read(ac97, AC97_EXTENDED_MID);
if (mext == 0)
return;
snd_iprintf(buffer, "Extended modem ID: codec=%i%s%s%s%s%s\n",
(mext & AC97_MEI_ADDR_MASK) >> AC97_MEI_ADDR_SHIFT,
mext & AC97_MEI_CID2 ? " CID2" : "",
mext & AC97_MEI_CID1 ? " CID1" : "",
mext & AC97_MEI_HANDSET ? " HSET" : "",
mext & AC97_MEI_LINE2 ? " LIN2" : "",
mext & AC97_MEI_LINE1 ? " LIN1" : "");
val = snd_ac97_read(ac97, AC97_EXTENDED_MSTATUS);
snd_iprintf(buffer, "Modem status :%s%s%s%s%s%s%s%s%s%s%s%s%s%s%s%s\n",
val & AC97_MEA_GPIO ? " GPIO" : "",
val & AC97_MEA_MREF ? " MREF" : "",
val & AC97_MEA_ADC1 ? " ADC1" : "",
val & AC97_MEA_DAC1 ? " DAC1" : "",
val & AC97_MEA_ADC2 ? " ADC2" : "",
val & AC97_MEA_DAC2 ? " DAC2" : "",
val & AC97_MEA_HADC ? " HADC" : "",
val & AC97_MEA_HDAC ? " HDAC" : "",
val & AC97_MEA_PRA ? " PRA(GPIO)" : "",
val & AC97_MEA_PRB ? " PRB(res)" : "",
val & AC97_MEA_PRC ? " PRC(ADC1)" : "",
val & AC97_MEA_PRD ? " PRD(DAC1)" : "",
val & AC97_MEA_PRE ? " PRE(ADC2)" : "",
val & AC97_MEA_PRF ? " PRF(DAC2)" : "",
val & AC97_MEA_PRG ? " PRG(HADC)" : "",
val & AC97_MEA_PRH ? " PRH(HDAC)" : "");
if (mext & AC97_MEI_LINE1) {
val = snd_ac97_read(ac97, AC97_LINE1_RATE);
snd_iprintf(buffer, "Line1 rate : %iHz\n", val);
}
if (mext & AC97_MEI_LINE2) {
val = snd_ac97_read(ac97, AC97_LINE2_RATE);
snd_iprintf(buffer, "Line2 rate : %iHz\n", val);
}
if (mext & AC97_MEI_HANDSET) {
val = snd_ac97_read(ac97, AC97_HANDSET_RATE);
snd_iprintf(buffer, "Headset rate : %iHz\n", val);
}
}
static void snd_ac97_proc_read(struct snd_info_entry *entry, struct snd_info_buffer *buffer)
{
struct snd_ac97 *ac97 = entry->private_data;
mutex_lock(&ac97->page_mutex);
if ((ac97->id & 0xffffff40) == AC97_ID_AD1881) { // Analog Devices AD1881/85/86
int idx;
for (idx = 0; idx < 3; idx++)
if (ac97->spec.ad18xx.id[idx]) {
/* select single codec */
snd_ac97_update_bits(ac97, AC97_AD_SERIAL_CFG, 0x7000,
ac97->spec.ad18xx.unchained[idx] | ac97->spec.ad18xx.chained[idx]);
snd_ac97_proc_read_main(ac97, buffer, idx);
snd_iprintf(buffer, "\n\n");
}
/* select all codecs */
snd_ac97_update_bits(ac97, AC97_AD_SERIAL_CFG, 0x7000, 0x7000);
snd_iprintf(buffer, "\nAD18XX configuration\n");
snd_iprintf(buffer, "Unchained : 0x%04x,0x%04x,0x%04x\n",
ac97->spec.ad18xx.unchained[0],
ac97->spec.ad18xx.unchained[1],
ac97->spec.ad18xx.unchained[2]);
snd_iprintf(buffer, "Chained : 0x%04x,0x%04x,0x%04x\n",
ac97->spec.ad18xx.chained[0],
ac97->spec.ad18xx.chained[1],
ac97->spec.ad18xx.chained[2]);
} else {
snd_ac97_proc_read_main(ac97, buffer, 0);
}
mutex_unlock(&ac97->page_mutex);
}
#ifdef CONFIG_SND_DEBUG
/* direct register write for debugging */
static void snd_ac97_proc_regs_write(struct snd_info_entry *entry, struct snd_info_buffer *buffer)
{
struct snd_ac97 *ac97 = entry->private_data;
char line[64];
unsigned int reg, val;
mutex_lock(&ac97->page_mutex);
while (!snd_info_get_line(buffer, line, sizeof(line))) {
if (sscanf(line, "%x %x", &reg, &val) != 2)
continue;
/* register must be even */
if (reg < 0x80 && (reg & 1) == 0 && val <= 0xffff)
snd_ac97_write_cache(ac97, reg, val);
}
mutex_unlock(&ac97->page_mutex);
}
#endif
static void snd_ac97_proc_regs_read_main(struct snd_ac97 *ac97, struct snd_info_buffer *buffer, int subidx)
{
int reg, val;
for (reg = 0; reg < 0x80; reg += 2) {
val = snd_ac97_read(ac97, reg);
snd_iprintf(buffer, "%i:%02x = %04x\n", subidx, reg, val);
}
}
static void snd_ac97_proc_regs_read(struct snd_info_entry *entry,
struct snd_info_buffer *buffer)
{
struct snd_ac97 *ac97 = entry->private_data;
mutex_lock(&ac97->page_mutex);
if ((ac97->id & 0xffffff40) == AC97_ID_AD1881) { // Analog Devices AD1881/85/86
int idx;
for (idx = 0; idx < 3; idx++)
if (ac97->spec.ad18xx.id[idx]) {
/* select single codec */
snd_ac97_update_bits(ac97, AC97_AD_SERIAL_CFG, 0x7000,
ac97->spec.ad18xx.unchained[idx] | ac97->spec.ad18xx.chained[idx]);
snd_ac97_proc_regs_read_main(ac97, buffer, idx);
}
/* select all codecs */
snd_ac97_update_bits(ac97, AC97_AD_SERIAL_CFG, 0x7000, 0x7000);
} else {
snd_ac97_proc_regs_read_main(ac97, buffer, 0);
}
mutex_unlock(&ac97->page_mutex);
}
void snd_ac97_proc_init(struct snd_ac97 * ac97)
{
struct snd_info_entry *entry;
char name[32];
const char *prefix;
if (ac97->bus->proc == NULL)
return;
prefix = ac97_is_audio(ac97) ? "ac97" : "mc97";
sprintf(name, "%s#%d-%d", prefix, ac97->addr, ac97->num);
if ((entry = snd_info_create_card_entry(ac97->bus->card, name, ac97->bus->proc)) != NULL) {
snd_info_set_text_ops(entry, ac97, snd_ac97_proc_read);
if (snd_info_register(entry) < 0) {
snd_info_free_entry(entry);
entry = NULL;
}
}
ac97->proc = entry;
sprintf(name, "%s#%d-%d+regs", prefix, ac97->addr, ac97->num);
if ((entry = snd_info_create_card_entry(ac97->bus->card, name, ac97->bus->proc)) != NULL) {
snd_info_set_text_ops(entry, ac97, snd_ac97_proc_regs_read);
#ifdef CONFIG_SND_DEBUG
entry->mode |= S_IWUSR;
entry->c.text.write = snd_ac97_proc_regs_write;
#endif
if (snd_info_register(entry) < 0) {
snd_info_free_entry(entry);
entry = NULL;
}
}
ac97->proc_regs = entry;
}
void snd_ac97_proc_done(struct snd_ac97 * ac97)
{
snd_info_free_entry(ac97->proc_regs);
ac97->proc_regs = NULL;
snd_info_free_entry(ac97->proc);
ac97->proc = NULL;
}
void snd_ac97_bus_proc_init(struct snd_ac97_bus * bus)
{
struct snd_info_entry *entry;
char name[32];
sprintf(name, "codec97#%d", bus->num);
if ((entry = snd_info_create_card_entry(bus->card, name, bus->card->proc_root)) != NULL) {
entry->mode = S_IFDIR | S_IRUGO | S_IXUGO;
if (snd_info_register(entry) < 0) {
snd_info_free_entry(entry);
entry = NULL;
}
}
bus->proc = entry;
}
void snd_ac97_bus_proc_done(struct snd_ac97_bus * bus)
{
snd_info_free_entry(bus->proc);
bus->proc = NULL;
}
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