Gitweb:     
http://git.kernel.org/git/?p=linux/kernel/git/torvalds/linux-2.6.git;a=commit;h=6632d64b0b596b9588b607806ac6d36c8c2c9696
Commit:     6632d64b0b596b9588b607806ac6d36c8c2c9696
Parent:     acec30ffffe1eee07e3202cff03e7ca8350d250f
Author:     Pavel Hofman <[EMAIL PROTECTED]>
AuthorDate: Mon Dec 3 12:44:28 2007 +0100
Committer:  Jaroslav Kysela <[EMAIL PROTECTED]>
CommitDate: Thu Jan 31 17:29:30 2008 +0100

    [ALSA] switching rate in STAC9460 codec of Prodigy192
    
    * support for switching rate in STAC9460 - using set_rate_val of the akm
    infrastructure
    * listing all STAC9460 registers in proc
    * disabling mpu401 device for Prodigy192 - otherwise the currently
      flawed mpu401 code hangs kernel when opening the midi device
    * removing old unused commented-out code
    
    Signed-off-by: Pavel Hofman <[EMAIL PROTECTED]>
    Signed-off-by: Takashi Iwai <[EMAIL PROTECTED]>
    Signed-off-by: Jaroslav Kysela <[EMAIL PROTECTED]>
---
 include/sound/ak4xxx-adda.h    |    2 +-
 sound/i2c/other/ak4xxx-adda.c  |    5 +
 sound/pci/ice1712/ice1712.h    |    2 +
 sound/pci/ice1712/prodigy192.c |  271 +++++++++++++++++-----------------------
 4 files changed, 124 insertions(+), 156 deletions(-)

diff --git a/include/sound/ak4xxx-adda.h b/include/sound/ak4xxx-adda.h
index 891cf1a..6153b91 100644
--- a/include/sound/ak4xxx-adda.h
+++ b/include/sound/ak4xxx-adda.h
@@ -68,7 +68,7 @@ struct snd_akm4xxx {
        enum {
                SND_AK4524, SND_AK4528, SND_AK4529,
                SND_AK4355, SND_AK4358, SND_AK4381,
-               SND_AK5365
+               SND_AK5365, NON_AKM
        } type;
 
        /* (array) information of combined codecs */
diff --git a/sound/i2c/other/ak4xxx-adda.c b/sound/i2c/other/ak4xxx-adda.c
index 39bb03a..fefa1ae 100644
--- a/sound/i2c/other/ak4xxx-adda.c
+++ b/sound/i2c/other/ak4xxx-adda.c
@@ -293,6 +293,11 @@ void snd_akm4xxx_init(struct snd_akm4xxx *ak)
        case SND_AK5365:
                /* FIXME: any init sequence? */
                return;
+       case NON_AKM:
+               /* fake value for non-akm codecs using akm infrastructure
+                * (e.g. of ice1724) - certainly FIXME
+                */
+               return;
        default:
                snd_BUG();
                return;
diff --git a/sound/pci/ice1712/ice1712.h b/sound/pci/ice1712/ice1712.h
index 3c3cac3..4dc576a 100644
--- a/sound/pci/ice1712/ice1712.h
+++ b/sound/pci/ice1712/ice1712.h
@@ -399,6 +399,8 @@ struct snd_ice1712 {
                } juli;
                struct {
                        struct ak4114 *ak4114;
+                       /* rate change needs atomic mute/unmute of all dacs*/
+                       struct mutex mute_mutex;
                } prodigy192;
                struct {
                        struct {
diff --git a/sound/pci/ice1712/prodigy192.c b/sound/pci/ice1712/prodigy192.c
index 4b21d5c..6d81a1c 100644
--- a/sound/pci/ice1712/prodigy192.c
+++ b/sound/pci/ice1712/prodigy192.c
@@ -81,6 +81,24 @@ static inline unsigned char stac9460_get(struct snd_ice1712 
*ice, int reg)
 /*
  * DAC mute control
  */
+
+/*
+ * idx = STAC9460 volume register number, mute: 0 = mute, 1 = unmute
+ */
+static int stac9460_dac_mute(struct snd_ice1712 *ice, int idx,
+               unsigned char mute)
+{
+       unsigned char new, old;
+       int change;
+       old = stac9460_get(ice, idx);
+       new = (~mute << 7 & 0x80) | (old & ~0x80);
+       change = (new != old);
+       if (change)
+               /*printk ("Volume register 0x%02x: 0x%02x\n", idx, new);*/
+               stac9460_put(ice, idx, new);
+       return change;
+}
+
 #define stac9460_dac_mute_info         snd_ctl_boolean_mono_info
 
 static int stac9460_dac_mute_get(struct snd_kcontrol *kcontrol, struct 
snd_ctl_elem_value *ucontrol)
@@ -101,20 +119,18 @@ static int stac9460_dac_mute_get(struct snd_kcontrol 
*kcontrol, struct snd_ctl_e
 static int stac9460_dac_mute_put(struct snd_kcontrol *kcontrol, struct 
snd_ctl_elem_value *ucontrol)
 {
        struct snd_ice1712 *ice = snd_kcontrol_chip(kcontrol);
-       unsigned char new, old;
-       int idx;
-       int change;
+       int idx, change;
 
        if (kcontrol->private_value)
                idx = STAC946X_MASTER_VOLUME;
        else
                idx  = snd_ctl_get_ioffidx(kcontrol, &ucontrol->id) + 
STAC946X_LF_VOLUME;
-       old = stac9460_get(ice, idx);
-       new = (~ucontrol->value.integer.value[0]<< 7 & 0x80) | (old & ~0x80);
-       change = (new != old);
-       if (change)
-               stac9460_put(ice, idx, new);
-
+       /* due to possible conflicts with stac9460_set_rate_val, mutexing */
+       mutex_lock(&ice->spec.prodigy192.mute_mutex);
+       /*printk("Mute put: reg 0x%02x, ctrl value: 0x%02x\n", idx,
+               ucontrol->value.integer.value[0]);*/
+       change = stac9460_dac_mute(ice, idx, ucontrol->value.integer.value[0]);
+       mutex_unlock(&ice->spec.prodigy192.mute_mutex);
        return change;
 }
 
@@ -162,6 +178,8 @@ static int stac9460_dac_vol_put(struct snd_kcontrol 
*kcontrol, struct snd_ctl_el
        ovol = 0x7f - (tmp & 0x7f);
        change = (ovol != nvol);
        if (change) {
+               ovol =  (0x7f - nvol) | (tmp & 0x80);
+               /*printk("DAC Volume: reg 0x%02x: 0x%02x\n", idx, ovol);*/
                stac9460_put(ice, idx, (0x7f - nvol) | (tmp & 0x80));
        }
        return change;
@@ -251,121 +269,6 @@ static int stac9460_adc_vol_put(struct snd_kcontrol 
*kcontrol, struct snd_ctl_el
        return change;
 }
 
-#if 0
-/*
- * Headphone Amplifier
- */
-static int aureon_set_headphone_amp(struct snd_ice1712 *ice, int enable)
-{
-       unsigned int tmp, tmp2;
-
-       tmp2 = tmp = snd_ice1712_gpio_read(ice);
-       if (enable)
-               tmp |= AUREON_HP_SEL;
-       else
-               tmp &= ~ AUREON_HP_SEL;
-       if (tmp != tmp2) {
-               snd_ice1712_gpio_write(ice, tmp);
-               return 1;
-       }
-       return 0;
-}
-
-static int aureon_get_headphone_amp(struct snd_ice1712 *ice)
-{
-       unsigned int tmp = snd_ice1712_gpio_read(ice);
-
-       return ( tmp & AUREON_HP_SEL )!= 0;
-}
-
-#define aureon_bool_info       snd_ctl_boolean_mono_info
-
-static int aureon_hpamp_get(struct snd_kcontrol *kcontrol, struct 
snd_ctl_elem_value *ucontrol)
-{
-       struct snd_ice1712 *ice = snd_kcontrol_chip(kcontrol);
-
-       ucontrol->value.integer.value[0] = aureon_get_headphone_amp(ice);
-       return 0;
-}
-
-
-static int aureon_hpamp_put(struct snd_kcontrol *kcontrol, struct 
snd_ctl_elem_value *ucontrol)
-{
-       struct snd_ice1712 *ice = snd_kcontrol_chip(kcontrol);
-
-       return aureon_set_headphone_amp(ice,ucontrol->value.integer.value[0]);
-}
-
-/*
- * Deemphasis
- */
-static int aureon_deemp_get(struct snd_kcontrol *kcontrol, struct 
snd_ctl_elem_value *ucontrol)
-{
-       struct snd_ice1712 *ice = snd_kcontrol_chip(kcontrol);
-       ucontrol->value.integer.value[0] = (wm_get(ice, WM_DAC_CTRL2) & 0xf) == 
0xf;
-       return 0;
-}
-
-static int aureon_deemp_put(struct snd_kcontrol *kcontrol, struct 
snd_ctl_elem_value *ucontrol)
-{
-       struct snd_ice1712 *ice = snd_kcontrol_chip(kcontrol);
-       int temp, temp2;
-       temp2 = temp = wm_get(ice, WM_DAC_CTRL2);
-       if (ucontrol->value.integer.value[0])
-               temp |= 0xf;
-       else
-               temp &= ~0xf;
-       if (temp != temp2) {
-               wm_put(ice, WM_DAC_CTRL2, temp);
-               return 1;
-       }
-       return 0;
-}
-
-/*
- * ADC Oversampling
- */
-static int aureon_oversampling_info(struct snd_kcontrol *k, struct 
snd_ctl_elem_info *uinfo)
-{
-       static char *texts[2] = { "128x", "64x" };
-
-       uinfo->type = SNDRV_CTL_ELEM_TYPE_ENUMERATED;
-       uinfo->count = 1;
-       uinfo->value.enumerated.items = 2;
-
-       if (uinfo->value.enumerated.item >= uinfo->value.enumerated.items)
-               uinfo->value.enumerated.item = uinfo->value.enumerated.items - 
1;
-       strcpy(uinfo->value.enumerated.name, 
texts[uinfo->value.enumerated.item]);
-
-        return 0;
-}
-
-static int aureon_oversampling_get(struct snd_kcontrol *kcontrol, struct 
snd_ctl_elem_value *ucontrol)
-{
-       struct snd_ice1712 *ice = snd_kcontrol_chip(kcontrol);
-       ucontrol->value.enumerated.item[0] = (wm_get(ice, WM_MASTER) & 0x8) == 
0x8;
-       return 0;
-}
-
-static int aureon_oversampling_put(struct snd_kcontrol *kcontrol, struct 
snd_ctl_elem_value *ucontrol)
-{
-       int temp, temp2;
-       struct snd_ice1712 *ice = snd_kcontrol_chip(kcontrol);
-
-       temp2 = temp = wm_get(ice, WM_MASTER);
-
-       if (ucontrol->value.enumerated.item[0])
-               temp |= 0x8;
-       else
-               temp &= ~0x8;
-
-       if (temp != temp2) {
-               wm_put(ice, WM_MASTER, temp);
-               return 1;
-       }
-       return 0;
-}
-#endif
 static int stac9460_mic_sw_info(struct snd_kcontrol *kcontrol,
                                struct snd_ctl_elem_info *uinfo)
 {
@@ -407,6 +310,56 @@ static int stac9460_mic_sw_put(struct snd_kcontrol 
*kcontrol,
                stac9460_put(ice, STAC946X_GENERAL_PURPOSE, new);
        return change;
 }
+/*
+ * Handler for setting correct codec rate - called when rate change is detected
+ */
+static void stac9460_set_rate_val(struct snd_akm4xxx *ak, unsigned int rate)
+{
+       unsigned char old, new;
+       int idx;
+       unsigned char changed[7];
+       struct snd_ice1712 *ice = ak->private_data[0];
+
+       if (rate == 0)  /* no hint - S/PDIF input is master, simply return */
+               return;
+       else if (rate <= 48000)
+               new = 0x08;     /* 256x, base rate mode */
+       else if (rate <= 96000)
+               new = 0x11;     /* 256x, mid rate mode */
+       else
+               new = 0x12;     /* 128x, high rate mode */
+       old = stac9460_get(ice, STAC946X_MASTER_CLOCKING);
+       if (old == new)
+               return;
+       /* change detected, setting master clock, muting first */
+       /* due to possible conflicts with mute controls - mutexing */
+       mutex_lock(&ice->spec.prodigy192.mute_mutex);
+       /* we have to remember current mute status for each DAC */
+       for (idx = 0; idx < 7 ; ++idx)
+               changed[idx] = stac9460_dac_mute(ice,
+                               STAC946X_MASTER_VOLUME + idx, 0);
+       /*printk("Rate change: %d, new MC: 0x%02x\n", rate, new);*/
+       stac9460_put(ice, STAC946X_MASTER_CLOCKING, new);
+       udelay(10);
+       /* unmuting - only originally unmuted dacs -
+        * i.e. those changed when muting */
+       for (idx = 0; idx < 7 ; ++idx) {
+               if (changed[idx])
+                       stac9460_dac_mute(ice, STAC946X_MASTER_VOLUME + idx, 1);
+       }
+       mutex_unlock(&ice->spec.prodigy192.mute_mutex);
+}
+
+/* using akm infrastructure for setting rate of the codec */
+static struct snd_akm4xxx akmlike_stac9460 __devinitdata = {
+       .type = NON_AKM,        /* special value */
+       .num_adcs = 6,          /* not used in any way, just for completeness */
+       .num_dacs = 2,
+       .ops = {
+               .set_rate_val = stac9460_set_rate_val
+       }
+};
+
 
 static const DECLARE_TLV_DB_SCALE(db_scale_dac, -19125, 75, 0);
 static const DECLARE_TLV_DB_SCALE(db_scale_adc, 0, 150, 0);
@@ -483,39 +436,8 @@ static struct snd_kcontrol_new stac_controls[] 
__devinitdata = {
                .put = stac9460_mic_sw_put,
 
        },
-#if 0
-       {
-               .iface = SNDRV_CTL_ELEM_IFACE_MIXER,
-               .name = "Capture Route",
-               .info = wm_adc_mux_info,
-               .get = wm_adc_mux_get,
-               .put = wm_adc_mux_put,
-       },
-       {
-               .iface = SNDRV_CTL_ELEM_IFACE_MIXER,
-               .name = "Headphone Amplifier Switch",
-               .info = aureon_bool_info,
-               .get = aureon_hpamp_get,
-               .put = aureon_hpamp_put
-       },
-       {
-               .iface = SNDRV_CTL_ELEM_IFACE_MIXER,
-               .name = "DAC Deemphasis Switch",
-               .info = aureon_bool_info,
-               .get = aureon_deemp_get,
-               .put = aureon_deemp_put
-       },
-       {
-               .iface = SNDRV_CTL_ELEM_IFACE_MIXER,
-               .name = "ADC Oversampling",
-               .info = aureon_oversampling_info,
-               .get = aureon_oversampling_get,
-               .put = aureon_oversampling_put
-       },
-#endif
 };
 
-
 /* AK4114 - ICE1724 connections on Prodigy192 + MI/ODI/O */
 /* CDTO (pin 32) -- GPIO11 pin 86
  * CDTI (pin 33) -- GPIO10 pin 77
@@ -720,6 +642,27 @@ static int prodigy192_ak4114_init(struct snd_ice1712 *ice)
                                 ice, &ice->spec.prodigy192.ak4114);
 }
 
+static void stac9460_proc_regs_read(struct snd_info_entry *entry,
+               struct snd_info_buffer *buffer)
+{
+       struct snd_ice1712 *ice = (struct snd_ice1712 *)entry->private_data;
+       int reg, val;
+       /* registers 0x0 - 0x14 */
+       for (reg = 0; reg <= 0x15; reg++) {
+               val = stac9460_get(ice, reg);
+               snd_iprintf(buffer, "0x%02x = 0x%02x\n", reg, val);
+       }
+}
+
+
+static void stac9460_proc_init(struct snd_ice1712 *ice)
+{
+       struct snd_info_entry *entry;
+       if (!snd_card_proc_new(ice->card, "stac9460_codec", &entry))
+               snd_info_set_text_ops(entry, ice, stac9460_proc_regs_read);
+}
+
+
 static int __devinit prodigy192_add_controls(struct snd_ice1712 *ice)
 {
        unsigned int i;
@@ -746,6 +689,7 @@ static int __devinit prodigy192_add_controls(struct 
snd_ice1712 *ice)
                if (err < 0)
                        return err;
        }
+       stac9460_proc_init(ice);
        return 0;
 }
 
@@ -778,6 +722,7 @@ static int __devinit prodigy192_init(struct snd_ice1712 
*ice)
 {
        static const unsigned short stac_inits_prodigy[] = {
                STAC946X_RESET, 0,
+               STAC946X_MASTER_CLOCKING, 0x11,
 /*             STAC946X_MASTER_VOLUME, 0,
                STAC946X_LF_VOLUME, 0,
                STAC946X_RF_VOLUME, 0,
@@ -789,6 +734,7 @@ static int __devinit prodigy192_init(struct snd_ice1712 
*ice)
        };
        const unsigned short *p;
        int err = 0;
+       struct snd_akm4xxx *ak;
 
        /* prodigy 192 */
        ice->num_total_dacs = 6;
@@ -799,6 +745,15 @@ static int __devinit prodigy192_init(struct snd_ice1712 
*ice)
        p = stac_inits_prodigy;
        for (; *p != (unsigned short)-1; p += 2)
                stac9460_put(ice, p[0], p[1]);
+       /* reusing the akm codecs infrastructure,
+        * for setting rate on stac9460 */
+       ak = ice->akm = kmalloc(sizeof(struct snd_akm4xxx), GFP_KERNEL);
+       if (!ak)
+               return -ENOMEM;
+       ice->akm_codecs = 1;
+       err = snd_ice1712_akm4xxx_init(ak, &akmlike_stac9460, NULL, ice);
+       if (err < 0)
+               return err;
 
        /* MI/ODI/O add on card with AK4114 */
        if (prodigy192_miodio_exists(ice)) {
@@ -812,6 +767,8 @@ static int __devinit prodigy192_init(struct snd_ice1712 
*ice)
        if (err < 0)
                return err;
 
+       mutex_init(&ice->spec.prodigy192.mute_mutex);
+
        return 0;
 }
 
@@ -854,6 +811,10 @@ struct snd_ice1712_card_info snd_vt1724_prodigy192_cards[] 
__devinitdata = {
                .build_controls = prodigy192_add_controls,
                .eeprom_size = sizeof(prodigy71_eeprom),
                .eeprom_data = prodigy71_eeprom,
+               /* the current MPU401 code loops infinitely
+                * when opening midi device
+                */
+               .no_mpu401 = 1,
        },
        { } /* terminator */
 };
-
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