Hi,
the patch below is an experimental implementation of TLV support for
AC97. Some codecs have non-standard ranges, so they needed hacks.
Takashi
diff -r 9a7c82908d37 pci/ac97/ac97_codec.c
--- a/pci/ac97/ac97_codec.c Thu Aug 17 18:21:36 2006 +0200
+++ b/pci/ac97/ac97_codec.c Sun Aug 20 23:38:57 2006 +0200
@@ -31,6 +31,7 @@
#include <linux/mutex.h>
#include <sound/core.h>
#include <sound/pcm.h>
+#include <sound/tlv.h>
#include <sound/ac97_codec.h>
#include <sound/asoundef.h>
#include <sound/initval.h>
@@ -1182,6 +1183,32 @@ static int snd_ac97_cmute_new_stereo(str
}
/*
+ * set dB information
+ */
+static DECLARE_TLV_DB_SCALE(db_scale_4bit, -4500, 300, 0);
+static DECLARE_TLV_DB_SCALE(db_scale_5bit, -4650, 150, 0);
+static DECLARE_TLV_DB_SCALE(db_scale_6bit, -9450, 150, 0);
+static DECLARE_TLV_DB_SCALE(db_scale_5bit_12db_max, -3450, 150, 0);
+static DECLARE_TLV_DB_SCALE(db_scale_rec_gain, 0, 150, 0);
+
+static unsigned int *find_db_scale(unsigned int maxval)
+{
+ switch (maxval) {
+ case 0x0f: return db_scale_4bit;
+ case 0x1f: return db_scale_5bit;
+ case 0x3f: return db_scale_6bit;
+ }
+ return NULL;
+}
+
+static void set_tlv_db_scale(struct snd_kcontrol *kctl, unsigned int *tlv)
+{
+ kctl->tlv.p = tlv;
+ if (tlv)
+ kctl->vd[0].access |= SNDRV_CTL_ELEM_ACCESS_TLV_READ;
+}
+
+/*
* create a volume for normal stereo/mono controls
*/
static int snd_ac97_cvol_new(struct snd_card *card, char *name, int reg, unsigned int lo_max,
@@ -1203,6 +1230,10 @@ static int snd_ac97_cvol_new(struct snd_
tmp.index = ac97->num;
kctl = snd_ctl_new1(&tmp, ac97);
}
+ if (reg >= AC97_PHONE && reg <= AC97_PCM)
+ set_tlv_db_scale(kctl, db_scale_5bit_12db_max);
+ else
+ set_tlv_db_scale(kctl, find_db_scale(lo_max));
err = snd_ctl_add(card, kctl);
if (err < 0)
return err;
@@ -1282,6 +1313,7 @@ static int snd_ac97_mixer_build(struct s
snd_ac97_change_volume_params2(ac97, AC97_CENTER_LFE_MASTER, 0, &max);
kctl->private_value &= ~(0xff << 16);
kctl->private_value |= (int)max << 16;
+ set_tlv_db_scale(kctl, find_db_scale(max));
snd_ac97_write_cache(ac97, AC97_CENTER_LFE_MASTER, ac97->regs[AC97_CENTER_LFE_MASTER] | max);
}
@@ -1295,6 +1327,7 @@ static int snd_ac97_mixer_build(struct s
snd_ac97_change_volume_params2(ac97, AC97_CENTER_LFE_MASTER, 8, &max);
kctl->private_value &= ~(0xff << 16);
kctl->private_value |= (int)max << 16;
+ set_tlv_db_scale(kctl, find_db_scale(max));
snd_ac97_write_cache(ac97, AC97_CENTER_LFE_MASTER, ac97->regs[AC97_CENTER_LFE_MASTER] | max << 8);
}
@@ -1342,8 +1375,9 @@ static int snd_ac97_mixer_build(struct s
((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, snd_ac97_cnew(&snd_ac97_controls_pc_beep[idx], ac97))) < 0)
+ if ((err = snd_ctl_add(card, kctl = snd_ac97_cnew(&snd_ac97_controls_pc_beep[idx], ac97))) < 0)
return err;
+ set_tlv_db_scale(kctl, db_scale_4bit);
snd_ac97_write_cache(ac97, AC97_PC_BEEP,
snd_ac97_read(ac97, AC97_PC_BEEP) | 0x801e);
}
@@ -1410,22 +1444,26 @@ static int snd_ac97_mixer_build(struct s
else
init_val = 0x9f1f;
for (idx = 0; idx < 2; idx++)
- if ((err = snd_ctl_add(card, snd_ac97_cnew(&snd_ac97_controls_ad18xx_pcm[idx], ac97))) < 0)
+ if ((err = snd_ctl_add(card, kctl = snd_ac97_cnew(&snd_ac97_controls_ad18xx_pcm[idx], ac97))) < 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, snd_ac97_cnew(&snd_ac97_controls_ad18xx_surround[idx], ac97))) < 0)
+ if ((err = snd_ctl_add(card, kctl = snd_ac97_cnew(&snd_ac97_controls_ad18xx_surround[idx], ac97))) < 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, snd_ac97_cnew(&snd_ac97_controls_ad18xx_center[idx], ac97))) < 0)
+ if ((err = snd_ctl_add(card, kctl = snd_ac97_cnew(&snd_ac97_controls_ad18xx_center[idx], ac97))) < 0)
return err;
+ set_tlv_db_scale(kctl, db_scale_5bit);
for (idx = 0; idx < 2; idx++)
- if ((err = snd_ctl_add(card, snd_ac97_cnew(&snd_ac97_controls_ad18xx_lfe[idx], ac97))) < 0)
+ if ((err = snd_ctl_add(card, kctl = snd_ac97_cnew(&snd_ac97_controls_ad18xx_lfe[idx], ac97))) < 0)
return err;
+ set_tlv_db_scale(kctl, db_scale_5bit);
ac97->spec.ad18xx.pcmreg[2] = init_val;
}
snd_ac97_write_cache(ac97, AC97_PCM, init_val);
@@ -1453,16 +1491,18 @@ static int snd_ac97_mixer_build(struct s
if (err < 0)
return err;
}
- if ((err = snd_ctl_add(card, snd_ac97_cnew(&snd_ac97_control_capture_vol, ac97))) < 0)
+ if ((err = snd_ctl_add(card, kctl = snd_ac97_cnew(&snd_ac97_control_capture_vol, ac97))) < 0)
return err;
+ set_tlv_db_scale(kctl, db_scale_rec_gain);
snd_ac97_write_cache(ac97, AC97_REC_SEL, 0x0000);
snd_ac97_write_cache(ac97, AC97_REC_GAIN, 0x0000);
}
/* 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, snd_ac97_cnew(&snd_ac97_controls_mic_capture[idx], ac97))) < 0)
+ if ((err = snd_ctl_add(card, kctl = snd_ac97_cnew(&snd_ac97_controls_mic_capture[idx], ac97))) < 0)
return err;
+ set_tlv_db_scale(kctl, db_scale_rec_gain);
snd_ac97_write_cache(ac97, AC97_REC_GAIN_MIC, 0x0000);
}
diff -r 9a7c82908d37 pci/ac97/ac97_patch.c
--- a/pci/ac97/ac97_patch.c Thu Aug 17 18:21:36 2006 +0200
+++ b/pci/ac97/ac97_patch.c Sun Aug 20 23:35:37 2006 +0200
@@ -32,6 +32,7 @@
#include <sound/core.h>
#include <sound/pcm.h>
#include <sound/control.h>
+#include <sound/tlv.h>
#include <sound/ac97_codec.h>
#include "ac97_patch.h"
#include "ac97_id.h"
@@ -49,6 +50,20 @@ static int patch_build_controls(struct s
if ((err = snd_ctl_add(ac97->bus->card, snd_ac97_cnew(&controls[idx], ac97))) < 0)
return err;
return 0;
+}
+
+/* replace with a new TLV */
+static void reset_tlv(struct snd_ac97 *ac97, const char *name,
+ unsigned int *tlv)
+{
+ struct snd_ctl_elem_id sid;
+ struct snd_kcontrol *kctl;
+ memset(&sid, 0, sizeof(sid));
+ strcpy(sid.name, name);
+ sid.iface = SNDRV_CTL_ELEM_IFACE_MIXER;
+ kctl = snd_ctl_find_id(ac97->bus->card, &sid);
+ if (kctl && kctl->tlv.p)
+ kctl->tlv.p = tlv;
}
/* set to the page, update bits and restore the page */
@@ -1522,12 +1537,16 @@ static const struct snd_kcontrol_new snd
AC97_SINGLE("Line Jack Sense", AC97_AD_JACK_SPDIF, 8, 1, 1), /* inverted */
};
+static DECLARE_TLV_DB_SCALE(db_scale_6bit_6db_max, -8850, 150, 0);
+
static int patch_ad1885_specific(struct snd_ac97 * ac97)
{
int err;
if ((err = patch_build_controls(ac97, snd_ac97_controls_ad1885, ARRAY_SIZE(snd_ac97_controls_ad1885))) < 0)
return err;
+ reset_tlv(ac97, "Headphone Playback Volume",
+ db_scale_6bit_6db_max);
return 0;
}
@@ -1551,12 +1570,27 @@ int patch_ad1885(struct snd_ac97 * ac97)
return 0;
}
+static int patch_ad1886_specific(struct snd_ac97 * ac97)
+{
+ reset_tlv(ac97, "Headphone Playback Volume",
+ db_scale_6bit_6db_max);
+ return 0;
+}
+
+static struct snd_ac97_build_ops patch_ad1886_build_ops = {
+ .build_specific = &patch_ad1886_specific,
+#ifdef CONFIG_PM
+ .resume = ad18xx_resume
+#endif
+};
+
int patch_ad1886(struct snd_ac97 * ac97)
{
patch_ad1881(ac97);
/* Presario700 workaround */
/* for Jack Sense/SPDIF Register misetting causing */
snd_ac97_write_cache(ac97, AC97_AD_JACK_SPDIF, 0x0010);
+ ac97->build_ops = &patch_ad1886_build_ops;
return 0;
}
@@ -2015,6 +2049,8 @@ static const struct snd_kcontrol_new snd
/* AC97_SINGLE("IEC958 Input Monitor", AC97_ALC650_MULTICH, 13, 1, 0), */
};
+static DECLARE_TLV_DB_SCALE(db_scale_5bit_3db_max, -4350, 150, 0);
+
static int patch_alc650_specific(struct snd_ac97 * ac97)
{
int err;
@@ -2025,6 +2061,9 @@ static int patch_alc650_specific(struct
if ((err = patch_build_controls(ac97, snd_ac97_spdif_controls_alc650, ARRAY_SIZE(snd_ac97_spdif_controls_alc650))) < 0)
return err;
}
+ if (ac97->id != AC97_ID_ALC650F)
+ reset_tlv(ac97, "Master Playback Volume",
+ db_scale_5bit_3db_max);
return 0;
}
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