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Diffstat (limited to 'sound/pci/ac97/ac97_codec.c')
-rw-r--r--sound/pci/ac97/ac97_codec.c369
1 files changed, 203 insertions, 166 deletions
diff --git a/sound/pci/ac97/ac97_codec.c b/sound/pci/ac97/ac97_codec.c
index 1ef7cdf1d3e8..c54bdefa5afe 100644
--- a/sound/pci/ac97/ac97_codec.c
+++ b/sound/pci/ac97/ac97_codec.c
@@ -1,25 +1,10 @@
+// SPDX-License-Identifier: GPL-2.0-or-later
/*
* 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/delay.h>
@@ -167,7 +152,6 @@ static const struct ac97_codec_id snd_ac97_codec_ids[] = {
{ 0x4e534300, 0xffffffff, "LM4540,43,45,46,48", NULL, NULL }, // only guess --jk
{ 0x4e534331, 0xffffffff, "LM4549", NULL, NULL },
{ 0x4e534350, 0xffffffff, "LM4550", patch_lm4550, NULL }, // volume wrap fix
-{ 0x50534304, 0xffffffff, "UCB1400", patch_ucb1400, NULL },
{ 0x53494c20, 0xffffffe0, "Si3036,8", mpatch_si3036, mpatch_si3036, AC97_MODEM_PATCH },
{ 0x53544d02, 0xffffffff, "ST7597", NULL, NULL },
{ 0x54524102, 0xffffffff, "TR28022", NULL, NULL },
@@ -233,11 +217,11 @@ static int snd_ac97_valid_reg(struct snd_ac97 *ac97, unsigned short reg)
case AC97_ID_ST_AC97_ID4:
if (reg == 0x08)
return 0;
- /* fall through */
+ fallthrough;
case AC97_ID_ST7597:
if (reg == 0x22 || reg == 0x7a)
return 1;
- /* fall through */
+ fallthrough;
case AC97_ID_AK4540:
case AC97_ID_AK4542:
if (reg <= 0x1c || reg == 0x20 || reg == 0x26 || reg >= 0x7c)
@@ -342,11 +326,10 @@ void snd_ac97_write_cache(struct snd_ac97 *ac97, unsigned short reg, unsigned sh
{
if (!snd_ac97_valid_reg(ac97, reg))
return;
- mutex_lock(&ac97->reg_mutex);
+ guard(mutex)(&ac97->reg_mutex);
ac97->regs[reg] = value;
ac97->bus->ops->write(ac97, reg, value);
set_bit(reg, ac97->reg_accessed);
- mutex_unlock(&ac97->reg_mutex);
}
EXPORT_SYMBOL(snd_ac97_write_cache);
@@ -369,14 +352,13 @@ int snd_ac97_update(struct snd_ac97 *ac97, unsigned short reg, unsigned short va
if (!snd_ac97_valid_reg(ac97, reg))
return -EINVAL;
- mutex_lock(&ac97->reg_mutex);
+ guard(mutex)(&ac97->reg_mutex);
change = ac97->regs[reg] != value;
if (change) {
ac97->regs[reg] = value;
ac97->bus->ops->write(ac97, reg, value);
}
set_bit(reg, ac97->reg_accessed);
- mutex_unlock(&ac97->reg_mutex);
return change;
}
@@ -397,14 +379,10 @@ EXPORT_SYMBOL(snd_ac97_update);
*/
int snd_ac97_update_bits(struct snd_ac97 *ac97, unsigned short reg, unsigned short mask, unsigned short value)
{
- int change;
-
if (!snd_ac97_valid_reg(ac97, reg))
return -EINVAL;
- mutex_lock(&ac97->reg_mutex);
- change = snd_ac97_update_bits_nolock(ac97, reg, mask, value);
- mutex_unlock(&ac97->reg_mutex);
- return change;
+ guard(mutex)(&ac97->reg_mutex);
+ return snd_ac97_update_bits_nolock(ac97, reg, mask, value);
}
EXPORT_SYMBOL(snd_ac97_update_bits);
@@ -432,12 +410,12 @@ static int snd_ac97_ad18xx_update_pcm_bits(struct snd_ac97 *ac97, int codec, uns
int change;
unsigned short old, new, cfg;
- mutex_lock(&ac97->page_mutex);
+ guard(mutex)(&ac97->page_mutex);
old = ac97->spec.ad18xx.pcmreg[codec];
new = (old & ~mask) | (value & mask);
change = old != new;
if (change) {
- mutex_lock(&ac97->reg_mutex);
+ guard(mutex)(&ac97->reg_mutex);
cfg = snd_ac97_read_cache(ac97, AC97_AD_SERIAL_CFG);
ac97->spec.ad18xx.pcmreg[codec] = new;
/* select single codec */
@@ -449,9 +427,7 @@ static int snd_ac97_ad18xx_update_pcm_bits(struct snd_ac97 *ac97, int codec, uns
/* select all codecs */
ac97->bus->ops->write(ac97, AC97_AD_SERIAL_CFG,
cfg | 0x7000);
- mutex_unlock(&ac97->reg_mutex);
}
- mutex_unlock(&ac97->page_mutex);
return change;
}
@@ -611,11 +587,6 @@ static int snd_ac97_put_volsw(struct snd_kcontrol *kcontrol,
return err;
}
-static const struct snd_kcontrol_new snd_ac97_controls_master_mono[2] = {
-AC97_SINGLE("Master Mono Playback Switch", AC97_MASTER_MONO, 15, 1, 1),
-AC97_SINGLE("Master Mono Playback Volume", AC97_MASTER_MONO, 0, 31, 1)
-};
-
static const struct snd_kcontrol_new snd_ac97_controls_tone[2] = {
AC97_SINGLE("Tone Control - Bass", AC97_MASTER_TONE, 8, 15, 1),
AC97_SINGLE("Tone Control - Treble", AC97_MASTER_TONE, 0, 15, 1)
@@ -737,12 +708,11 @@ static int snd_ac97_spdif_default_get(struct snd_kcontrol *kcontrol, struct snd_
{
struct snd_ac97 *ac97 = snd_kcontrol_chip(kcontrol);
- mutex_lock(&ac97->reg_mutex);
+ guard(mutex)(&ac97->reg_mutex);
ucontrol->value.iec958.status[0] = ac97->spdif_status & 0xff;
ucontrol->value.iec958.status[1] = (ac97->spdif_status >> 8) & 0xff;
ucontrol->value.iec958.status[2] = (ac97->spdif_status >> 16) & 0xff;
ucontrol->value.iec958.status[3] = (ac97->spdif_status >> 24) & 0xff;
- mutex_unlock(&ac97->reg_mutex);
return 0;
}
@@ -781,7 +751,7 @@ static int snd_ac97_spdif_default_put(struct snd_kcontrol *kcontrol, struct snd_
}
}
- mutex_lock(&ac97->reg_mutex);
+ guard(mutex)(&ac97->reg_mutex);
change = ac97->spdif_status != new;
ac97->spdif_status = new;
@@ -815,7 +785,6 @@ static int snd_ac97_spdif_default_put(struct snd_kcontrol *kcontrol, struct snd_
snd_ac97_update_bits_nolock(ac97, AC97_EXTENDED_STATUS, AC97_EA_SPDIF, AC97_EA_SPDIF); /* turn on again */
}
}
- mutex_unlock(&ac97->reg_mutex);
return change;
}
@@ -824,7 +793,7 @@ static int snd_ac97_put_spsa(struct snd_kcontrol *kcontrol, struct snd_ctl_elem_
{
struct snd_ac97 *ac97 = snd_kcontrol_chip(kcontrol);
int reg = kcontrol->private_value & 0xff;
- int shift = (kcontrol->private_value >> 8) & 0xff;
+ int shift = (kcontrol->private_value >> 8) & 0x0f;
int mask = (kcontrol->private_value >> 16) & 0xff;
// int invert = (kcontrol->private_value >> 24) & 0xff;
unsigned short value, old, new;
@@ -832,7 +801,7 @@ static int snd_ac97_put_spsa(struct snd_kcontrol *kcontrol, struct snd_ctl_elem_
value = (ucontrol->value.integer.value[0] & mask);
- mutex_lock(&ac97->reg_mutex);
+ guard(mutex)(&ac97->reg_mutex);
mask <<= shift;
value <<= shift;
old = snd_ac97_read_cache(ac97, reg);
@@ -846,7 +815,6 @@ static int snd_ac97_put_spsa(struct snd_kcontrol *kcontrol, struct snd_ctl_elem_
if (extst & AC97_EA_SPDIF)
snd_ac97_update_bits_nolock(ac97, AC97_EXTENDED_STATUS, AC97_EA_SPDIF, AC97_EA_SPDIF); /* turn on again */
}
- mutex_unlock(&ac97->reg_mutex);
return change;
}
@@ -957,10 +925,9 @@ static int snd_ac97_ad18xx_pcm_get_volume(struct snd_kcontrol *kcontrol, struct
struct snd_ac97 *ac97 = snd_kcontrol_chip(kcontrol);
int codec = kcontrol->private_value & 3;
- mutex_lock(&ac97->page_mutex);
- ucontrol->value.integer.value[0] = 31 - ((ac97->spec.ad18xx.pcmreg[codec] >> 0) & 31);
- ucontrol->value.integer.value[1] = 31 - ((ac97->spec.ad18xx.pcmreg[codec] >> 8) & 31);
- mutex_unlock(&ac97->page_mutex);
+ guard(mutex)(&ac97->page_mutex);
+ ucontrol->value.integer.value[0] = 31 - ((ac97->spec.ad18xx.pcmreg[codec] >> 8) & 31);
+ ucontrol->value.integer.value[1] = 31 - ((ac97->spec.ad18xx.pcmreg[codec] >> 0) & 31);
return 0;
}
@@ -1306,15 +1273,17 @@ static int snd_ac97_cmix_new_stereo(struct snd_card *card, const char *pfx,
if (snd_ac97_try_bit(ac97, reg, 15)) {
sprintf(name, "%s Switch", pfx);
- if ((err = snd_ac97_cmute_new_stereo(card, name, reg,
- check_stereo, check_amix,
- ac97)) < 0)
+ err = snd_ac97_cmute_new_stereo(card, name, reg,
+ check_stereo, check_amix,
+ ac97);
+ if (err < 0)
return err;
}
check_volume_resolution(ac97, reg, &lo_max, &hi_max);
if (lo_max) {
sprintf(name, "%s Volume", pfx);
- if ((err = snd_ac97_cvol_new(card, name, reg, lo_max, hi_max, ac97)) < 0)
+ err = snd_ac97_cvol_new(card, name, reg, lo_max, hi_max, ac97);
+ if (err < 0)
return err;
}
return 0;
@@ -1353,9 +1322,11 @@ static int snd_ac97_mixer_build(struct snd_ac97 * ac97)
/* build center controls */
if ((snd_ac97_try_volume_mix(ac97, AC97_CENTER_LFE_MASTER))
&& !(ac97->flags & AC97_AD_MULTI)) {
- if ((err = snd_ctl_add(card, snd_ac97_cnew(&snd_ac97_controls_center[0], ac97))) < 0)
+ err = snd_ctl_add(card, snd_ac97_cnew(&snd_ac97_controls_center[0], ac97));
+ if (err < 0)
return err;
- if ((err = snd_ctl_add(card, kctl = snd_ac97_cnew(&snd_ac97_controls_center[1], ac97))) < 0)
+ err = snd_ctl_add(card, kctl = snd_ac97_cnew(&snd_ac97_controls_center[1], ac97));
+ if (err < 0)
return err;
snd_ac97_change_volume_params2(ac97, AC97_CENTER_LFE_MASTER, 0, &max);
kctl->private_value &= ~(0xff << 16);
@@ -1367,9 +1338,11 @@ static int snd_ac97_mixer_build(struct snd_ac97 * ac97)
/* build LFE controls */
if ((snd_ac97_try_volume_mix(ac97, AC97_CENTER_LFE_MASTER+1))
&& !(ac97->flags & AC97_AD_MULTI)) {
- if ((err = snd_ctl_add(card, snd_ac97_cnew(&snd_ac97_controls_lfe[0], ac97))) < 0)
+ err = snd_ctl_add(card, snd_ac97_cnew(&snd_ac97_controls_lfe[0], ac97));
+ if (err < 0)
return err;
- if ((err = snd_ctl_add(card, kctl = snd_ac97_cnew(&snd_ac97_controls_lfe[1], ac97))) < 0)
+ err = snd_ctl_add(card, kctl = snd_ac97_cnew(&snd_ac97_controls_lfe[1], ac97));
+ if (err < 0)
return err;
snd_ac97_change_volume_params2(ac97, AC97_CENTER_LFE_MASTER, 8, &max);
kctl->private_value &= ~(0xff << 16);
@@ -1382,23 +1355,26 @@ static int snd_ac97_mixer_build(struct snd_ac97 * ac97)
if ((snd_ac97_try_volume_mix(ac97, AC97_SURROUND_MASTER))
&& !(ac97->flags & AC97_AD_MULTI)) {
/* Surround Master (0x38) is with stereo mutes */
- if ((err = snd_ac97_cmix_new_stereo(card, "Surround Playback",
- AC97_SURROUND_MASTER, 1, 0,
- ac97)) < 0)
+ err = snd_ac97_cmix_new_stereo(card, "Surround Playback",
+ AC97_SURROUND_MASTER, 1, 0,
+ ac97);
+ if (err < 0)
return err;
}
/* build headphone controls */
if (snd_ac97_try_volume_mix(ac97, AC97_HEADPHONE)) {
- if ((err = snd_ac97_cmix_new(card, "Headphone Playback",
- AC97_HEADPHONE, 0, ac97)) < 0)
+ err = snd_ac97_cmix_new(card, "Headphone Playback",
+ AC97_HEADPHONE, 0, ac97);
+ if (err < 0)
return err;
}
/* build master mono controls */
if (snd_ac97_try_volume_mix(ac97, AC97_MASTER_MONO)) {
- if ((err = snd_ac97_cmix_new(card, "Master Mono Playback",
- AC97_MASTER_MONO, 0, ac97)) < 0)
+ err = snd_ac97_cmix_new(card, "Master Mono Playback",
+ AC97_MASTER_MONO, 0, ac97);
+ if (err < 0)
return err;
}
@@ -1406,7 +1382,9 @@ static int snd_ac97_mixer_build(struct snd_ac97 * ac97)
if (!(ac97->flags & AC97_HAS_NO_TONE)) {
if (snd_ac97_try_volume_mix(ac97, AC97_MASTER_TONE)) {
for (idx = 0; idx < 2; idx++) {
- if ((err = snd_ctl_add(card, kctl = snd_ac97_cnew(&snd_ac97_controls_tone[idx], ac97))) < 0)
+ kctl = snd_ac97_cnew(&snd_ac97_controls_tone[idx], ac97);
+ err = snd_ctl_add(card, kctl);
+ if (err < 0)
return err;
if (ac97->id == AC97_ID_YMF743 ||
ac97->id == AC97_ID_YMF753) {
@@ -1422,9 +1400,12 @@ static int snd_ac97_mixer_build(struct snd_ac97 * ac97)
if (!(ac97->flags & AC97_HAS_NO_PC_BEEP) &&
((ac97->flags & AC97_HAS_PC_BEEP) ||
snd_ac97_try_volume_mix(ac97, AC97_PC_BEEP))) {
- for (idx = 0; idx < 2; idx++)
- if ((err = snd_ctl_add(card, kctl = snd_ac97_cnew(&snd_ac97_controls_pc_beep[idx], ac97))) < 0)
+ for (idx = 0; idx < 2; idx++) {
+ kctl = snd_ac97_cnew(&snd_ac97_controls_pc_beep[idx], ac97);
+ err = snd_ctl_add(card, kctl);
+ if (err < 0)
return err;
+ }
set_tlv_db_scale(kctl, db_scale_4bit);
snd_ac97_write_cache(
ac97,
@@ -1437,8 +1418,9 @@ static int snd_ac97_mixer_build(struct snd_ac97 * ac97)
/* build Phone controls */
if (!(ac97->flags & AC97_HAS_NO_PHONE)) {
if (snd_ac97_try_volume_mix(ac97, AC97_PHONE)) {
- if ((err = snd_ac97_cmix_new(card, "Phone Playback",
- AC97_PHONE, 1, ac97)) < 0)
+ err = snd_ac97_cmix_new(card, "Phone Playback",
+ AC97_PHONE, 1, ac97);
+ if (err < 0)
return err;
}
}
@@ -1446,26 +1428,30 @@ static int snd_ac97_mixer_build(struct snd_ac97 * ac97)
/* build MIC controls */
if (!(ac97->flags & AC97_HAS_NO_MIC)) {
if (snd_ac97_try_volume_mix(ac97, AC97_MIC)) {
- if ((err = snd_ac97_cmix_new(card, "Mic Playback",
- AC97_MIC, 1, ac97)) < 0)
+ err = snd_ac97_cmix_new(card, "Mic Playback",
+ AC97_MIC, 1, ac97);
+ if (err < 0)
return err;
- if ((err = snd_ctl_add(card, snd_ac97_cnew(&snd_ac97_controls_mic_boost, ac97))) < 0)
+ err = snd_ctl_add(card, snd_ac97_cnew(&snd_ac97_controls_mic_boost, ac97));
+ if (err < 0)
return err;
}
}
/* build Line controls */
if (snd_ac97_try_volume_mix(ac97, AC97_LINE)) {
- if ((err = snd_ac97_cmix_new(card, "Line Playback",
- AC97_LINE, 1, ac97)) < 0)
+ err = snd_ac97_cmix_new(card, "Line Playback",
+ AC97_LINE, 1, ac97);
+ if (err < 0)
return err;
}
/* build CD controls */
if (!(ac97->flags & AC97_HAS_NO_CD)) {
if (snd_ac97_try_volume_mix(ac97, AC97_CD)) {
- if ((err = snd_ac97_cmix_new(card, "CD Playback",
- AC97_CD, 1, ac97)) < 0)
+ err = snd_ac97_cmix_new(card, "CD Playback",
+ AC97_CD, 1, ac97);
+ if (err < 0)
return err;
}
}
@@ -1473,8 +1459,9 @@ static int snd_ac97_mixer_build(struct snd_ac97 * ac97)
/* build Video controls */
if (!(ac97->flags & AC97_HAS_NO_VIDEO)) {
if (snd_ac97_try_volume_mix(ac97, AC97_VIDEO)) {
- if ((err = snd_ac97_cmix_new(card, "Video Playback",
- AC97_VIDEO, 1, ac97)) < 0)
+ err = snd_ac97_cmix_new(card, "Video Playback",
+ AC97_VIDEO, 1, ac97);
+ if (err < 0)
return err;
}
}
@@ -1482,8 +1469,9 @@ static int snd_ac97_mixer_build(struct snd_ac97 * ac97)
/* build Aux controls */
if (!(ac97->flags & AC97_HAS_NO_AUX)) {
if (snd_ac97_try_volume_mix(ac97, AC97_AUX)) {
- if ((err = snd_ac97_cmix_new(card, "Aux Playback",
- AC97_AUX, 1, ac97)) < 0)
+ err = snd_ac97_cmix_new(card, "Aux Playback",
+ AC97_AUX, 1, ac97);
+ if (err < 0)
return err;
}
}
@@ -1495,26 +1483,38 @@ static int snd_ac97_mixer_build(struct snd_ac97 * ac97)
init_val = 0x9f9f;
else
init_val = 0x9f1f;
- for (idx = 0; idx < 2; idx++)
- if ((err = snd_ctl_add(card, kctl = snd_ac97_cnew(&snd_ac97_controls_ad18xx_pcm[idx], ac97))) < 0)
+ for (idx = 0; idx < 2; idx++) {
+ kctl = snd_ac97_cnew(&snd_ac97_controls_ad18xx_pcm[idx], ac97);
+ err = snd_ctl_add(card, kctl);
+ if (err < 0)
return err;
+ }
set_tlv_db_scale(kctl, db_scale_5bit);
ac97->spec.ad18xx.pcmreg[0] = init_val;
if (ac97->scaps & AC97_SCAP_SURROUND_DAC) {
- for (idx = 0; idx < 2; idx++)
- if ((err = snd_ctl_add(card, kctl = snd_ac97_cnew(&snd_ac97_controls_ad18xx_surround[idx], ac97))) < 0)
+ for (idx = 0; idx < 2; idx++) {
+ kctl = snd_ac97_cnew(&snd_ac97_controls_ad18xx_surround[idx], ac97);
+ err = snd_ctl_add(card, kctl);
+ if (err < 0)
return err;
+ }
set_tlv_db_scale(kctl, db_scale_5bit);
ac97->spec.ad18xx.pcmreg[1] = init_val;
}
if (ac97->scaps & AC97_SCAP_CENTER_LFE_DAC) {
- for (idx = 0; idx < 2; idx++)
- if ((err = snd_ctl_add(card, kctl = snd_ac97_cnew(&snd_ac97_controls_ad18xx_center[idx], ac97))) < 0)
+ for (idx = 0; idx < 2; idx++) {
+ kctl = snd_ac97_cnew(&snd_ac97_controls_ad18xx_center[idx], ac97);
+ err = snd_ctl_add(card, kctl);
+ if (err < 0)
return err;
+ }
set_tlv_db_scale(kctl, db_scale_5bit);
- for (idx = 0; idx < 2; idx++)
- if ((err = snd_ctl_add(card, kctl = snd_ac97_cnew(&snd_ac97_controls_ad18xx_lfe[idx], ac97))) < 0)
+ for (idx = 0; idx < 2; idx++) {
+ kctl = snd_ac97_cnew(&snd_ac97_controls_ad18xx_lfe[idx], ac97);
+ err = snd_ctl_add(card, kctl);
+ if (err < 0)
return err;
+ }
set_tlv_db_scale(kctl, db_scale_5bit);
ac97->spec.ad18xx.pcmreg[2] = init_val;
}
@@ -1535,7 +1535,8 @@ static int snd_ac97_mixer_build(struct snd_ac97 * ac97)
/* build Capture controls */
if (!(ac97->flags & AC97_HAS_NO_REC_GAIN)) {
- if ((err = snd_ctl_add(card, snd_ac97_cnew(&snd_ac97_control_capture_src, ac97))) < 0)
+ err = snd_ctl_add(card, snd_ac97_cnew(&snd_ac97_control_capture_src, ac97));
+ if (err < 0)
return err;
if (snd_ac97_try_bit(ac97, AC97_REC_GAIN, 15)) {
err = snd_ac97_cmute_new(card, "Capture Switch",
@@ -1543,7 +1544,9 @@ static int snd_ac97_mixer_build(struct snd_ac97 * ac97)
if (err < 0)
return err;
}
- if ((err = snd_ctl_add(card, kctl = snd_ac97_cnew(&snd_ac97_control_capture_vol, ac97))) < 0)
+ kctl = snd_ac97_cnew(&snd_ac97_control_capture_vol, ac97);
+ err = snd_ctl_add(card, kctl);
+ if (err < 0)
return err;
set_tlv_db_scale(kctl, db_scale_rec_gain);
snd_ac97_write_cache(ac97, AC97_REC_SEL, 0x0000);
@@ -1551,52 +1554,62 @@ static int snd_ac97_mixer_build(struct snd_ac97 * ac97)
}
/* build MIC Capture controls */
if (snd_ac97_try_volume_mix(ac97, AC97_REC_GAIN_MIC)) {
- for (idx = 0; idx < 2; idx++)
- if ((err = snd_ctl_add(card, kctl = snd_ac97_cnew(&snd_ac97_controls_mic_capture[idx], ac97))) < 0)
+ for (idx = 0; idx < 2; idx++) {
+ kctl = snd_ac97_cnew(&snd_ac97_controls_mic_capture[idx], ac97);
+ err = snd_ctl_add(card, kctl);
+ if (err < 0)
return err;
+ }
set_tlv_db_scale(kctl, db_scale_rec_gain);
snd_ac97_write_cache(ac97, AC97_REC_GAIN_MIC, 0x0000);
}
/* build PCM out path & mute control */
if (snd_ac97_try_bit(ac97, AC97_GENERAL_PURPOSE, 15)) {
- if ((err = snd_ctl_add(card, snd_ac97_cnew(&snd_ac97_controls_general[AC97_GENERAL_PCM_OUT], ac97))) < 0)
+ err = snd_ctl_add(card, snd_ac97_cnew(&snd_ac97_controls_general[AC97_GENERAL_PCM_OUT], ac97));
+ if (err < 0)
return err;
}
/* build Simulated Stereo Enhancement control */
if (ac97->caps & AC97_BC_SIM_STEREO) {
- if ((err = snd_ctl_add(card, snd_ac97_cnew(&snd_ac97_controls_general[AC97_GENERAL_STEREO_ENHANCEMENT], ac97))) < 0)
+ err = snd_ctl_add(card, snd_ac97_cnew(&snd_ac97_controls_general[AC97_GENERAL_STEREO_ENHANCEMENT], ac97));
+ if (err < 0)
return err;
}
/* build 3D Stereo Enhancement control */
if (snd_ac97_try_bit(ac97, AC97_GENERAL_PURPOSE, 13)) {
- if ((err = snd_ctl_add(card, snd_ac97_cnew(&snd_ac97_controls_general[AC97_GENERAL_3D], ac97))) < 0)
+ err = snd_ctl_add(card, snd_ac97_cnew(&snd_ac97_controls_general[AC97_GENERAL_3D], ac97));
+ if (err < 0)
return err;
}
/* build Loudness control */
if (ac97->caps & AC97_BC_LOUDNESS) {
- if ((err = snd_ctl_add(card, snd_ac97_cnew(&snd_ac97_controls_general[AC97_GENERAL_LOUDNESS], ac97))) < 0)
+ err = snd_ctl_add(card, snd_ac97_cnew(&snd_ac97_controls_general[AC97_GENERAL_LOUDNESS], ac97));
+ if (err < 0)
return err;
}
/* build Mono output select control */
if (snd_ac97_try_bit(ac97, AC97_GENERAL_PURPOSE, 9)) {
- if ((err = snd_ctl_add(card, snd_ac97_cnew(&snd_ac97_controls_general[AC97_GENERAL_MONO], ac97))) < 0)
+ err = snd_ctl_add(card, snd_ac97_cnew(&snd_ac97_controls_general[AC97_GENERAL_MONO], ac97));
+ if (err < 0)
return err;
}
/* build Mic select control */
if (snd_ac97_try_bit(ac97, AC97_GENERAL_PURPOSE, 8)) {
- if ((err = snd_ctl_add(card, snd_ac97_cnew(&snd_ac97_controls_general[AC97_GENERAL_MIC], ac97))) < 0)
+ err = snd_ctl_add(card, snd_ac97_cnew(&snd_ac97_controls_general[AC97_GENERAL_MIC], ac97));
+ if (err < 0)
return err;
}
/* build ADC/DAC loopback control */
if (enable_loopback && snd_ac97_try_bit(ac97, AC97_GENERAL_PURPOSE, 7)) {
- if ((err = snd_ctl_add(card, snd_ac97_cnew(&snd_ac97_controls_general[AC97_GENERAL_LOOPBACK], ac97))) < 0)
+ err = snd_ctl_add(card, snd_ac97_cnew(&snd_ac97_controls_general[AC97_GENERAL_LOOPBACK], ac97));
+ if (err < 0)
return err;
}
@@ -1612,11 +1625,15 @@ static int snd_ac97_mixer_build(struct snd_ac97 * ac97)
snd_ac97_write(ac97, AC97_3D_CONTROL, val);
val = snd_ac97_read(ac97, AC97_3D_CONTROL);
val = val == 0x0606;
- if ((err = snd_ctl_add(card, kctl = snd_ac97_cnew(&snd_ac97_controls_3d[0], ac97))) < 0)
+ kctl = snd_ac97_cnew(&snd_ac97_controls_3d[0], ac97);
+ err = snd_ctl_add(card, kctl);
+ if (err < 0)
return err;
if (val)
kctl->private_value = AC97_3D_CONTROL | (9 << 8) | (7 << 16);
- if ((err = snd_ctl_add(card, kctl = snd_ac97_cnew(&snd_ac97_controls_3d[1], ac97))) < 0)
+ kctl = snd_ac97_cnew(&snd_ac97_controls_3d[1], ac97);
+ err = snd_ctl_add(card, kctl);
+ if (err < 0)
return err;
if (val)
kctl->private_value = AC97_3D_CONTROL | (1 << 8) | (7 << 16);
@@ -1633,14 +1650,18 @@ static int snd_ac97_mixer_build(struct snd_ac97 * ac97)
if ((ac97->ext_id & AC97_EI_SPDIF) && !(ac97->scaps & AC97_SCAP_NO_SPDIF)) {
if (ac97->build_ops->build_spdif) {
- if ((err = ac97->build_ops->build_spdif(ac97)) < 0)
+ err = ac97->build_ops->build_spdif(ac97);
+ if (err < 0)
return err;
} else {
- for (idx = 0; idx < 5; idx++)
- if ((err = snd_ctl_add(card, snd_ac97_cnew(&snd_ac97_controls_spdif[idx], ac97))) < 0)
+ for (idx = 0; idx < 5; idx++) {
+ err = snd_ctl_add(card, snd_ac97_cnew(&snd_ac97_controls_spdif[idx], ac97));
+ if (err < 0)
return err;
+ }
if (ac97->build_ops->build_post_spdif) {
- if ((err = ac97->build_ops->build_post_spdif(ac97)) < 0)
+ err = ac97->build_ops->build_post_spdif(ac97);
+ if (err < 0)
return err;
}
/* set default PCM S/PDIF params */
@@ -1652,9 +1673,11 @@ static int snd_ac97_mixer_build(struct snd_ac97 * ac97)
}
/* build chip specific controls */
- if (ac97->build_ops->build_specific)
- if ((err = ac97->build_ops->build_specific(ac97)) < 0)
+ if (ac97->build_ops->build_specific) {
+ err = ac97->build_ops->build_specific(ac97);
+ if (err < 0)
return err;
+ }
if (snd_ac97_try_bit(ac97, AC97_POWERDOWN, 15)) {
kctl = snd_ac97_cnew(&snd_ac97_control_eapd, ac97);
@@ -1662,7 +1685,8 @@ static int snd_ac97_mixer_build(struct snd_ac97 * ac97)
return -ENOMEM;
if (ac97->scaps & AC97_SCAP_INV_EAPD)
set_inv_eapd(ac97, kctl);
- if ((err = snd_ctl_add(card, kctl)) < 0)
+ err = snd_ctl_add(card, kctl);
+ if (err < 0)
return err;
}
@@ -1684,14 +1708,18 @@ static int snd_ac97_modem_build(struct snd_card *card, struct snd_ac97 * ac97)
snd_ac97_write(ac97, AC97_MISC_AFE, 0x0);
/* build modem switches */
- for (idx = 0; idx < ARRAY_SIZE(snd_ac97_controls_modem_switches); idx++)
- if ((err = snd_ctl_add(card, snd_ctl_new1(&snd_ac97_controls_modem_switches[idx], ac97))) < 0)
+ for (idx = 0; idx < ARRAY_SIZE(snd_ac97_controls_modem_switches); idx++) {
+ err = snd_ctl_add(card, snd_ctl_new1(&snd_ac97_controls_modem_switches[idx], ac97));
+ if (err < 0)
return err;
+ }
/* build chip specific controls */
- if (ac97->build_ops->build_specific)
- if ((err = ac97->build_ops->build_specific(ac97)) < 0)
+ if (ac97->build_ops->build_specific) {
+ err = ac97->build_ops->build_specific(ac97);
+ if (err < 0)
return err;
+ }
return 0;
}
@@ -1773,10 +1801,10 @@ static unsigned int snd_ac97_determine_spdif_rates(struct snd_ac97 *ac97)
{
unsigned int result = 0;
int i;
- static unsigned short ctl_bits[] = {
+ static const unsigned short ctl_bits[] = {
AC97_SC_SPSR_44K, AC97_SC_SPSR_32K, AC97_SC_SPSR_48K
};
- static unsigned int rate_bits[] = {
+ static const unsigned int rate_bits[] = {
SNDRV_PCM_RATE_44100, SNDRV_PCM_RATE_32000, SNDRV_PCM_RATE_48000
};
@@ -1800,7 +1828,8 @@ static const struct ac97_codec_id *look_for_codec_id(const struct ac97_codec_id
return NULL;
}
-void snd_ac97_get_name(struct snd_ac97 *ac97, unsigned int id, char *name, int modem)
+void snd_ac97_get_name(struct snd_ac97 *ac97, unsigned int id, char *name,
+ size_t maxlen, int modem)
{
const struct ac97_codec_id *pid;
@@ -1812,7 +1841,7 @@ void snd_ac97_get_name(struct snd_ac97 *ac97, unsigned int id, char *name, int m
if (! pid)
return;
- strcpy(name, pid->name);
+ strscpy(name, pid->name, maxlen);
if (ac97 && pid->patch) {
if ((modem && (pid->flags & AC97_MODEM_PATCH)) ||
(! modem && ! (pid->flags & AC97_MODEM_PATCH)))
@@ -1821,17 +1850,19 @@ void snd_ac97_get_name(struct snd_ac97 *ac97, unsigned int id, char *name, int m
pid = look_for_codec_id(snd_ac97_codec_ids, id);
if (pid) {
- strcat(name, " ");
- strcat(name, pid->name);
+ strlcat(name, " ", maxlen);
+ strlcat(name, pid->name, maxlen);
if (pid->mask != 0xffffffff)
- sprintf(name + strlen(name), " rev %d", id & ~pid->mask);
+ sprintf(name + strlen(name), " rev %u", id & ~pid->mask);
if (ac97 && pid->patch) {
if ((modem && (pid->flags & AC97_MODEM_PATCH)) ||
(! modem && ! (pid->flags & AC97_MODEM_PATCH)))
pid->patch(ac97);
}
- } else
- sprintf(name + strlen(name), " id %x", id & 0xff);
+ } else {
+ int l = strlen(name);
+ snprintf(name + l, maxlen - l, " id %x", id & 0xff);
+ }
}
/**
@@ -1914,12 +1945,13 @@ static int ac97_reset_wait(struct snd_ac97 *ac97, int timeout, int with_modem)
*
* Return: Zero if successful, or a negative error code on failure.
*/
-int snd_ac97_bus(struct snd_card *card, int num, struct snd_ac97_bus_ops *ops,
+int snd_ac97_bus(struct snd_card *card, int num,
+ const struct snd_ac97_bus_ops *ops,
void *private_data, struct snd_ac97_bus **rbus)
{
int err;
struct snd_ac97_bus *bus;
- static struct snd_device_ops dev_ops = {
+ static const struct snd_device_ops dev_ops = {
.dev_free = snd_ac97_bus_dev_free,
};
@@ -1935,7 +1967,8 @@ int snd_ac97_bus(struct snd_card *card, int num, struct snd_ac97_bus_ops *ops,
bus->clock = 48000;
spin_lock_init(&bus->bus_lock);
snd_ac97_bus_proc_init(bus);
- if ((err = snd_device_new(card, SNDRV_DEV_BUS, bus, &dev_ops)) < 0) {
+ err = snd_device_new(card, SNDRV_DEV_BUS, bus, &dev_ops);
+ if (err < 0) {
snd_ac97_bus_free(bus);
return err;
}
@@ -1963,8 +1996,10 @@ static int snd_ac97_dev_register(struct snd_device *device)
dev_set_name(&ac97->dev, "%d-%d:%s",
ac97->bus->card->number, ac97->num,
snd_ac97_get_short_name(ac97));
- if ((err = device_register(&ac97->dev)) < 0) {
+ err = device_register(&ac97->dev);
+ if (err < 0) {
ac97_err(ac97, "Can't register ac97 bus\n");
+ put_device(&ac97->dev);
ac97->dev.bus = NULL;
return err;
}
@@ -2019,16 +2054,15 @@ int snd_ac97_mixer(struct snd_ac97_bus *bus, struct snd_ac97_template *template,
unsigned long end_time;
unsigned int reg;
const struct ac97_codec_id *pid;
- static struct snd_device_ops ops = {
+ static const struct snd_device_ops ops = {
.dev_free = snd_ac97_dev_free,
.dev_register = snd_ac97_dev_register,
.dev_disconnect = snd_ac97_dev_disconnect,
};
- if (rac97)
- *rac97 = NULL;
- if (snd_BUG_ON(!bus || !template))
+ if (snd_BUG_ON(!bus || !template || !rac97))
return -EINVAL;
+ *rac97 = NULL;
if (snd_BUG_ON(template->num >= 4))
return -EINVAL;
if (bus->codec[template->num])
@@ -2114,7 +2148,8 @@ int snd_ac97_mixer(struct snd_ac97_bus *bus, struct snd_ac97_template *template,
if (!(ac97->scaps & AC97_SCAP_SKIP_AUDIO) && !(ac97->scaps & AC97_SCAP_AUDIO)) {
/* test if we can write to the record gain volume register */
snd_ac97_write_cache(ac97, AC97_REC_GAIN, 0x8a06);
- if (((err = snd_ac97_read(ac97, AC97_REC_GAIN)) & 0x7fff) == 0x0a06)
+ err = snd_ac97_read(ac97, AC97_REC_GAIN);
+ if ((err & 0x7fff) == 0x0a06)
ac97->scaps |= AC97_SCAP_AUDIO;
}
if (ac97->scaps & AC97_SCAP_AUDIO) {
@@ -2251,15 +2286,15 @@ int snd_ac97_mixer(struct snd_ac97_bus *bus, struct snd_ac97_template *template,
/* additional initializations */
if (bus->ops->init)
bus->ops->init(ac97);
- snd_ac97_get_name(ac97, ac97->id, name, !ac97_is_audio(ac97));
- snd_ac97_get_name(NULL, ac97->id, name, !ac97_is_audio(ac97)); // ac97->id might be changed in the special setup code
+ snd_ac97_get_name(ac97, ac97->id, name, sizeof(name), !ac97_is_audio(ac97));
+ snd_ac97_get_name(NULL, ac97->id, name, sizeof(name), !ac97_is_audio(ac97)); // ac97->id might be changed in the special setup code
if (! ac97->build_ops)
ac97->build_ops = &null_build_ops;
if (ac97_is_audio(ac97)) {
char comp[16];
if (card->mixername[0] == '\0') {
- strcpy(card->mixername, name);
+ strscpy(card->mixername, name);
} else {
if (strlen(card->mixername) + 1 + strlen(name) + 1 <= sizeof(card->mixername)) {
strcat(card->mixername, ",");
@@ -2267,7 +2302,8 @@ int snd_ac97_mixer(struct snd_ac97_bus *bus, struct snd_ac97_template *template,
}
}
sprintf(comp, "AC97a:%08x", ac97->id);
- if ((err = snd_component_add(card, comp)) < 0) {
+ err = snd_component_add(card, comp);
+ if (err < 0) {
snd_ac97_free(ac97);
return err;
}
@@ -2279,7 +2315,7 @@ int snd_ac97_mixer(struct snd_ac97_bus *bus, struct snd_ac97_template *template,
if (ac97_is_modem(ac97)) {
char comp[16];
if (card->mixername[0] == '\0') {
- strcpy(card->mixername, name);
+ strscpy(card->mixername, name);
} else {
if (strlen(card->mixername) + 1 + strlen(name) + 1 <= sizeof(card->mixername)) {
strcat(card->mixername, ",");
@@ -2287,7 +2323,8 @@ int snd_ac97_mixer(struct snd_ac97_bus *bus, struct snd_ac97_template *template,
}
}
sprintf(comp, "AC97m:%08x", ac97->id);
- if ((err = snd_component_add(card, comp)) < 0) {
+ err = snd_component_add(card, comp);
+ if (err < 0) {
snd_ac97_free(ac97);
return err;
}
@@ -2299,7 +2336,8 @@ int snd_ac97_mixer(struct snd_ac97_bus *bus, struct snd_ac97_template *template,
if (ac97_is_audio(ac97))
update_power_regs(ac97);
snd_ac97_proc_init(ac97);
- if ((err = snd_device_new(card, SNDRV_DEV_CODEC, ac97, &ops)) < 0) {
+ err = snd_device_new(card, SNDRV_DEV_CODEC, ac97, &ops);
+ if (err < 0) {
snd_ac97_free(ac97);
return err;
}
@@ -2365,7 +2403,7 @@ struct ac97_power_reg {
enum { PWIDX_ADC, PWIDX_FRONT, PWIDX_CLFE, PWIDX_SURR, PWIDX_MIC, PWIDX_SIZE };
-static struct ac97_power_reg power_regs[PWIDX_SIZE] = {
+static const struct ac97_power_reg power_regs[PWIDX_SIZE] = {
[PWIDX_ADC] = { AC97_PCM_LR_ADC_RATE, AC97_POWERDOWN, AC97_PD_PR0},
[PWIDX_FRONT] = { AC97_PCM_FRONT_DAC_RATE, AC97_POWERDOWN, AC97_PD_PR1},
[PWIDX_CLFE] = { AC97_PCM_LFE_DAC_RATE, AC97_EXTENDED_STATUS,
@@ -2414,8 +2452,7 @@ int snd_ac97_update_power(struct snd_ac97 *ac97, int reg, int powerup)
* (for avoiding loud click noises for many (OSS) apps
* that open/close frequently)
*/
- schedule_delayed_work(&ac97->power_work,
- msecs_to_jiffies(power_save * 1000));
+ schedule_delayed_work(&ac97->power_work, secs_to_jiffies(power_save));
else {
cancel_delayed_work(&ac97->power_work);
update_power_regs(ac97);
@@ -2607,11 +2644,18 @@ EXPORT_SYMBOL(snd_ac97_resume);
*/
static void set_ctl_name(char *dst, const char *src, const char *suffix)
{
- if (suffix)
- sprintf(dst, "%s %s", src, suffix);
- else
- strcpy(dst, src);
-}
+ const size_t msize = SNDRV_CTL_ELEM_ID_NAME_MAXLEN;
+
+ if (suffix) {
+ if (snprintf(dst, msize, "%s %s", src, suffix) >= msize)
+ pr_warn("ALSA: AC97 control name '%s %s' truncated to '%s'\n",
+ src, suffix, dst);
+ } else {
+ if (strscpy(dst, src, msize) < 0)
+ pr_warn("ALSA: AC97 control name '%s' truncated to '%s'\n",
+ src, dst);
+ }
+}
/* remove the control with the given name and optional suffix */
static int snd_ac97_remove_ctl(struct snd_ac97 *ac97, const char *name,
@@ -2638,8 +2682,11 @@ static int snd_ac97_rename_ctl(struct snd_ac97 *ac97, const char *src,
const char *dst, const char *suffix)
{
struct snd_kcontrol *kctl = ctl_find(ac97, src, suffix);
+ char name[SNDRV_CTL_ELEM_ID_NAME_MAXLEN];
+
if (kctl) {
- set_ctl_name(kctl->id.name, dst, suffix);
+ set_ctl_name(name, dst, suffix);
+ snd_ctl_rename(ac97->bus->card, kctl, name);
return 0;
}
return -ENOENT;
@@ -2658,11 +2705,17 @@ static int snd_ac97_swap_ctl(struct snd_ac97 *ac97, const char *s1,
const char *s2, const char *suffix)
{
struct snd_kcontrol *kctl1, *kctl2;
+ char name[SNDRV_CTL_ELEM_ID_NAME_MAXLEN];
+
kctl1 = ctl_find(ac97, s1, suffix);
kctl2 = ctl_find(ac97, s2, suffix);
if (kctl1 && kctl2) {
- set_ctl_name(kctl1->id.name, s2, suffix);
- set_ctl_name(kctl2->id.name, s1, suffix);
+ set_ctl_name(name, s2, suffix);
+ snd_ctl_rename(ac97->bus->card, kctl1, name);
+
+ set_ctl_name(name, s1, suffix);
+ snd_ctl_rename(ac97->bus->card, kctl2, name);
+
return 0;
}
return -ENOENT;
@@ -2848,7 +2901,7 @@ struct quirk_table {
int (*func)(struct snd_ac97 *);
};
-static struct quirk_table applicable_quirks[] = {
+static const struct quirk_table applicable_quirks[] = {
{ "none", NULL },
{ "hp_only", tune_hp_only },
{ "swap_hp", tune_swap_hp },
@@ -2876,7 +2929,7 @@ static int apply_quirk(struct snd_ac97 *ac97, int type)
static int apply_quirk_str(struct snd_ac97 *ac97, const char *typestr)
{
int i;
- struct quirk_table *q;
+ const struct quirk_table *q;
for (i = 0; i < ARRAY_SIZE(applicable_quirks); i++) {
q = &applicable_quirks[i];
@@ -2941,19 +2994,3 @@ int snd_ac97_tune_hardware(struct snd_ac97 *ac97,
}
EXPORT_SYMBOL(snd_ac97_tune_hardware);
-
-/*
- * INIT part
- */
-
-static int __init alsa_ac97_init(void)
-{
- return 0;
-}
-
-static void __exit alsa_ac97_exit(void)
-{
-}
-
-module_init(alsa_ac97_init)
-module_exit(alsa_ac97_exit)
generated by cgit (git 2.34.1) at 2025-12-25 22:49:28 +0000