Merge branch 'linus' of git://git.kernel.org/pub/scm/linux/kernel/git/perex/alsa
[sfrench/cifs-2.6.git] / sound / pci / ice1712 / prodigy192.c
index 31cc66eb9f8fa9ccd6bc9bad39794ac329dd1686..48cf40a8f32a1b0c0f9c763bdd31feb2e83f0bc9 100644 (file)
@@ -2,6 +2,37 @@
  *   ALSA driver for ICEnsemble VT1724 (Envy24HT)
  *
  *   Lowlevel functions for AudioTrak Prodigy 192 cards
+ *   Supported IEC958 input from optional MI/ODI/O add-on card.
+ *
+ *   Specifics (SW, HW):
+ *   -------------------
+ *     * 49.5MHz crystal
+ *     * SPDIF-OUT on the card:
+ *       - coax (through isolation transformer)/toslink supplied by
+ *          74HC04 gates - 3 in parallel
+ *       - output switched between on-board CD drive dig-out connector
+ *          and ice1724 SPDTX pin, using 74HC02 NOR gates, controlled
+ *          by GPIO20 (0 = CD dig-out, 1 = SPDTX)
+ *     * SPDTX goes straight to MI/ODI/O card's SPDIF-OUT coax
+ *
+ *     * MI/ODI/O card: AK4114 based, used for iec958 input only
+ *             - toslink input -> RX0
+ *             - coax input -> RX1
+ *             - 4wire protocol:
+ *                     AK4114          ICE1724
+ *                     ------------------------------
+ *                     CDTO (pin 32) -- GPIO11 pin 86
+ *                     CDTI (pin 33) -- GPIO10 pin 77
+ *                     CCLK (pin 34) -- GPIO9 pin 76
+ *                     CSN  (pin 35) -- GPIO8 pin 75
+ *             - output data Mode 7 (24bit, I2S, slave)
+ *             - both MCKO1 and MCKO2 of ak4114 are fed to FPGA, which
+ *               outputs master clock to SPMCLKIN of ice1724.
+ *               Experimentally I found out that only a combination of
+ *               OCKS0=1, OCKS1=1 (128fs, 64fs output) and ice1724 -
+ *               VT1724_MT_I2S_MCLK_128X=0 (256fs input) yields correct
+ *               sampling rate. That means the the FPGA doubles the
+ *               MCK01 rate.
  *
  *     Copyright (c) 2003 Takashi Iwai <tiwai@suse.de>
  *      Copyright (c) 2003 Dimitromanolakis Apostolos <apostol@cs.utoronto.ca>
@@ -23,7 +54,6 @@
  *
  */      
 
-#include <sound/driver.h>
 #include <asm/io.h>
 #include <linux/delay.h>
 #include <linux/interrupt.h>
 #include "stac946x.h"
 #include <sound/tlv.h>
 
+struct prodigy192_spec {
+       struct ak4114 *ak4114;
+       /* rate change needs atomic mute/unmute of all dacs*/
+       struct mutex mute_mutex;
+};
+
 static inline void stac9460_put(struct snd_ice1712 *ice, int reg, unsigned char val)
 {
        snd_vt1724_write_i2c(ice, PRODIGY192_STAC9460_ADDR, reg, val);
@@ -50,15 +86,26 @@ static inline unsigned char stac9460_get(struct snd_ice1712 *ice, int reg)
 /*
  * DAC mute control
  */
-static int stac9460_dac_mute_info(struct snd_kcontrol *kcontrol, struct snd_ctl_elem_info *uinfo)
+
+/*
+ * idx = STAC9460 volume register number, mute: 0 = mute, 1 = unmute
+ */
+static int stac9460_dac_mute(struct snd_ice1712 *ice, int idx,
+               unsigned char mute)
 {
-       uinfo->type = SNDRV_CTL_ELEM_TYPE_BOOLEAN;
-       uinfo->count = 1;
-       uinfo->value.integer.min = 0;
-       uinfo->value.integer.max = 1;
-       return 0;
+       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)
 {
        struct snd_ice1712 *ice = snd_kcontrol_chip(kcontrol);
@@ -77,20 +124,19 @@ 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;
+       struct prodigy192_spec *spec = ice->spec;
+       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(&spec->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(&spec->mute_mutex);
        return change;
 }
 
@@ -138,6 +184,8 @@ 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;
@@ -146,14 +194,7 @@ static int stac9460_dac_vol_put(struct snd_kcontrol *kcontrol, struct snd_ctl_el
 /*
  * ADC mute control
  */
-static int stac9460_adc_mute_info(struct snd_kcontrol *kcontrol, struct snd_ctl_elem_info *uinfo)
-{
-       uinfo->type = SNDRV_CTL_ELEM_TYPE_BOOLEAN;
-       uinfo->count = 2;
-       uinfo->value.integer.min = 0;
-       uinfo->value.integer.max = 1;
-       return 0;
-}
+#define stac9460_adc_mute_info         snd_ctl_boolean_stereo_info
 
 static int stac9460_adc_mute_get(struct snd_kcontrol *kcontrol, struct snd_ctl_elem_value *ucontrol)
 {
@@ -224,7 +265,7 @@ static int stac9460_adc_vol_put(struct snd_kcontrol *kcontrol, struct snd_ctl_el
 
        for (i = 0; i < 2; ++i) {
                reg = STAC946X_MIC_L_VOLUME + i;
-               nvol = ucontrol->value.integer.value[i];
+               nvol = ucontrol->value.integer.value[i] & 0x0f;
                ovol = 0x0f - stac9460_get(ice, reg);
                change = ((ovol & 0x0f)  != nvol);
                if (change)
@@ -234,90 +275,10 @@ 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)
+static int stac9460_mic_sw_info(struct snd_kcontrol *kcontrol,
+                               struct snd_ctl_elem_info *uinfo)
 {
-       unsigned int tmp = snd_ice1712_gpio_read(ice);
-
-       return ( tmp & AUREON_HP_SEL )!= 0;
-}
-
-static int aureon_bool_info(struct snd_kcontrol *k, struct snd_ctl_elem_info *uinfo)
-{
-       uinfo->type = SNDRV_CTL_ELEM_TYPE_BOOLEAN;
-       uinfo->count = 1;
-       uinfo->value.integer.min = 0;
-       uinfo->value.integer.max = 1;
-       return 0;
-}
-
-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" };
+       static char *texts[2] = { "Line In", "Mic" };
 
        uinfo->type = SNDRV_CTL_ELEM_TYPE_ENUMERATED;
        uinfo->count = 1;
@@ -330,32 +291,82 @@ static int aureon_oversampling_info(struct snd_kcontrol *k, struct snd_ctl_elem_
         return 0;
 }
 
-static int aureon_oversampling_get(struct snd_kcontrol *kcontrol, struct snd_ctl_elem_value *ucontrol)
+
+static int stac9460_mic_sw_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;
+       unsigned char val;
+               
+       val = stac9460_get(ice, STAC946X_GENERAL_PURPOSE);
+       ucontrol->value.enumerated.item[0] = (val >> 7) & 0x1;
        return 0;
 }
 
-static int aureon_oversampling_put(struct snd_kcontrol *kcontrol, struct snd_ctl_elem_value *ucontrol)
+static int stac9460_mic_sw_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;
+       unsigned char new, old;
+       int change;
+       old = stac9460_get(ice, STAC946X_GENERAL_PURPOSE);
+       new = (ucontrol->value.enumerated.item[0] << 7 & 0x80) | (old & ~0x80);
+       change = (new != old);
+       if (change)
+               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];
+       struct prodigy192_spec *spec = ice->spec;
+
+       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
-               temp &= ~0x8;
-
-       if (temp != temp2) {
-               wm_put(ice, WM_MASTER, temp);
-               return 1;
+               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(&spec->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);
        }
-       return 0;
+       mutex_unlock(&spec->mute_mutex);
 }
-#endif
+
+/* 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);
@@ -364,7 +375,7 @@ static const DECLARE_TLV_DB_SCALE(db_scale_adc, 0, 150, 0);
  * mixers
  */
 
-static const struct snd_kcontrol_new stac_controls[] __devinitdata = {
+static struct snd_kcontrol_new stac_controls[] __devinitdata = {
        {
                .iface = SNDRV_CTL_ELEM_IFACE_MIXER,
                .name = "Master Playback Switch",
@@ -406,7 +417,7 @@ static const struct snd_kcontrol_new stac_controls[] __devinitdata = {
        },
        {
                .iface = SNDRV_CTL_ELEM_IFACE_MIXER,
-               .name = "ADC Switch",
+               .name = "ADC Capture Switch",
                .count = 1,
                .info = stac9460_adc_mute_info,
                .get = stac9460_adc_mute_get,
@@ -417,58 +428,301 @@ static const struct snd_kcontrol_new stac_controls[] __devinitdata = {
                .iface = SNDRV_CTL_ELEM_IFACE_MIXER,
                .access = (SNDRV_CTL_ELEM_ACCESS_READWRITE |
                           SNDRV_CTL_ELEM_ACCESS_TLV_READ),
-               .name = "ADC Volume",
+               .name = "ADC Capture Volume",
                .count = 1,
                .info = stac9460_adc_vol_info,
                .get = stac9460_adc_vol_get,
                .put = stac9460_adc_vol_put,
                .tlv = { .p = db_scale_adc }
        },
-#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
+               .name = "Analog Capture Input",
+               .info = stac9460_mic_sw_info,
+               .get = stac9460_mic_sw_get,
+               .put = stac9460_mic_sw_put,
+
        },
+};
+
+/* AK4114 - ICE1724 connections on Prodigy192 + MI/ODI/O */
+/* CDTO (pin 32) -- GPIO11 pin 86
+ * CDTI (pin 33) -- GPIO10 pin 77
+ * CCLK (pin 34) -- GPIO9 pin 76
+ * CSN  (pin 35) -- GPIO8 pin 75
+ */
+#define AK4114_ADDR    0x00 /* C1-C0: Chip Address
+                             * (According to datasheet fixed to “00”)
+                             */
+
+/*
+ * 4wire ak4114 protocol - writing data
+ */
+static void write_data(struct snd_ice1712 *ice, unsigned int gpio,
+                      unsigned int data, int idx)
+{
+       for (; idx >= 0; idx--) {
+               /* drop clock */
+               gpio &= ~VT1724_PRODIGY192_CCLK;
+               snd_ice1712_gpio_write(ice, gpio);
+               udelay(1);
+               /* set data */
+               if (data & (1 << idx))
+                       gpio |= VT1724_PRODIGY192_CDOUT;
+               else
+                       gpio &= ~VT1724_PRODIGY192_CDOUT;
+               snd_ice1712_gpio_write(ice, gpio);
+               udelay(1);
+               /* raise clock */
+               gpio |= VT1724_PRODIGY192_CCLK;
+               snd_ice1712_gpio_write(ice, gpio);
+               udelay(1);
+       }
+}
+
+/*
+ * 4wire ak4114 protocol - reading data
+ */
+static unsigned char read_data(struct snd_ice1712 *ice, unsigned int gpio,
+                              int idx)
+{
+       unsigned char data = 0;
+
+       for (; idx >= 0; idx--) {
+               /* drop clock */
+               gpio &= ~VT1724_PRODIGY192_CCLK;
+               snd_ice1712_gpio_write(ice, gpio);
+               udelay(1);
+               /* read data */
+               if (snd_ice1712_gpio_read(ice) & VT1724_PRODIGY192_CDIN)
+                       data |= (1 << idx);
+               udelay(1);
+               /* raise clock */
+               gpio |= VT1724_PRODIGY192_CCLK;
+               snd_ice1712_gpio_write(ice, gpio);
+               udelay(1);
+       }
+       return data;
+}
+/*
+ * 4wire ak4114 protocol - starting sequence
+ */
+static unsigned int prodigy192_4wire_start(struct snd_ice1712 *ice)
+{
+       unsigned int tmp;
+
+       snd_ice1712_save_gpio_status(ice);
+       tmp = snd_ice1712_gpio_read(ice);
+
+       tmp |= VT1724_PRODIGY192_CCLK; /* high at init */
+       tmp &= ~VT1724_PRODIGY192_CS; /* drop chip select */
+       snd_ice1712_gpio_write(ice, tmp);
+       udelay(1);
+       return tmp;
+}
+
+/*
+ * 4wire ak4114 protocol - final sequence
+ */
+static void prodigy192_4wire_finish(struct snd_ice1712 *ice, unsigned int tmp)
+{
+       tmp |= VT1724_PRODIGY192_CS; /* raise chip select */
+       snd_ice1712_gpio_write(ice, tmp);
+       udelay(1);
+       snd_ice1712_restore_gpio_status(ice);
+}
+
+/*
+ * Write data to addr register of ak4114
+ */
+static void prodigy192_ak4114_write(void *private_data, unsigned char addr,
+                              unsigned char data)
+{
+       struct snd_ice1712 *ice = private_data;
+       unsigned int tmp, addrdata;
+       tmp = prodigy192_4wire_start(ice);
+       addrdata = (AK4114_ADDR << 6) | 0x20 | (addr & 0x1f);
+       addrdata = (addrdata << 8) | data;
+       write_data(ice, tmp, addrdata, 15);
+       prodigy192_4wire_finish(ice, tmp);
+}
+
+/*
+ * Read data from addr register of ak4114
+ */
+static unsigned char prodigy192_ak4114_read(void *private_data,
+                                           unsigned char addr)
+{
+       struct snd_ice1712 *ice = private_data;
+       unsigned int tmp;
+       unsigned char data;
+
+       tmp = prodigy192_4wire_start(ice);
+       write_data(ice, tmp, (AK4114_ADDR << 6) | (addr & 0x1f), 7);
+       data = read_data(ice, tmp, 7);
+       prodigy192_4wire_finish(ice, tmp);
+       return data;
+}
+
+
+static int ak4114_input_sw_info(struct snd_kcontrol *kcontrol,
+                               struct snd_ctl_elem_info *uinfo)
+{
+       static char *texts[2] = { "Toslink", "Coax" };
+
+       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 ak4114_input_sw_get(struct snd_kcontrol *kcontrol,
+                       struct snd_ctl_elem_value *ucontrol)
+{
+       struct snd_ice1712 *ice = snd_kcontrol_chip(kcontrol);
+       unsigned char val;
+               
+       val = prodigy192_ak4114_read(ice, AK4114_REG_IO1);
+       /* AK4114_IPS0 bit = 0 -> RX0 = Toslink
+        * AK4114_IPS0 bit = 1 -> RX1 = Coax
+        */
+       ucontrol->value.enumerated.item[0] = (val & AK4114_IPS0) ? 1 : 0;
+       return 0;
+}
+
+static int ak4114_input_sw_put(struct snd_kcontrol *kcontrol,
+                       struct snd_ctl_elem_value *ucontrol)
+{
+       struct snd_ice1712 *ice = snd_kcontrol_chip(kcontrol);
+       unsigned char new, old, itemvalue;
+       int change;
+
+       old = prodigy192_ak4114_read(ice, AK4114_REG_IO1);
+       /* AK4114_IPS0 could be any bit */
+       itemvalue = (ucontrol->value.enumerated.item[0]) ? 0xff : 0x00;
+
+       new = (itemvalue & AK4114_IPS0) | (old & ~AK4114_IPS0);
+       change = (new != old);
+       if (change)
+               prodigy192_ak4114_write(ice, AK4114_REG_IO1, new);
+       return change;
+}
+
+
+static struct snd_kcontrol_new ak4114_controls[] __devinitdata = {
        {
                .iface = SNDRV_CTL_ELEM_IFACE_MIXER,
-               .name = "ADC Oversampling",
-               .info = aureon_oversampling_info,
-               .get = aureon_oversampling_get,
-               .put = aureon_oversampling_put
-       },
-#endif
+               .name = "MIODIO IEC958 Capture Input",
+               .info = ak4114_input_sw_info,
+               .get = ak4114_input_sw_get,
+               .put = ak4114_input_sw_put,
+
+       }
 };
 
+
+static int prodigy192_ak4114_init(struct snd_ice1712 *ice)
+{
+       static const unsigned char ak4114_init_vals[] = {
+               AK4114_RST | AK4114_PWN | AK4114_OCKS0 | AK4114_OCKS1,
+               /* ice1724 expects I2S and provides clock,
+                * DEM0 disables the deemphasis filter
+                */
+               AK4114_DIF_I24I2S | AK4114_DEM0 ,
+               AK4114_TX1E,
+               AK4114_EFH_1024 | AK4114_DIT, /* default input RX0 */
+               0,
+               0
+       };
+       static const unsigned char ak4114_init_txcsb[] = {
+               0x41, 0x02, 0x2c, 0x00, 0x00
+       };
+       struct prodigy192_spec *spec = ice->spec;
+
+       return snd_ak4114_create(ice->card,
+                                prodigy192_ak4114_read,
+                                prodigy192_ak4114_write,
+                                ak4114_init_vals, ak4114_init_txcsb,
+                                ice, &spec->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)
 {
+       struct prodigy192_spec *spec = ice->spec;
        unsigned int i;
        int err;
 
        for (i = 0; i < ARRAY_SIZE(stac_controls); i++) {
-               err = snd_ctl_add(ice->card, snd_ctl_new1(&stac_controls[i], ice));
+               err = snd_ctl_add(ice->card,
+                                 snd_ctl_new1(&stac_controls[i], ice));
+               if (err < 0)
+                       return err;
+       }
+       if (spec->ak4114) {
+               /* ak4114 is connected */
+               for (i = 0; i < ARRAY_SIZE(ak4114_controls); i++) {
+                       err = snd_ctl_add(ice->card,
+                                         snd_ctl_new1(&ak4114_controls[i],
+                                                      ice));
+                       if (err < 0)
+                               return err;
+               }
+               err = snd_ak4114_build(spec->ak4114,
+                               NULL, /* ak4114 in MIO/DI/O handles no IEC958 output */
+                               ice->pcm->streams[SNDRV_PCM_STREAM_CAPTURE].substream);
                if (err < 0)
                        return err;
        }
+       stac9460_proc_init(ice);
        return 0;
 }
 
+/*
+ * check for presence of MI/ODI/O add-on card with digital inputs
+ */
+static int prodigy192_miodio_exists(struct snd_ice1712 *ice)
+{
+
+       unsigned char orig_value;
+       const unsigned char test_data = 0xd1;   /* random value */
+       unsigned char addr = AK4114_REG_INT0_MASK; /* random SAFE address */
+       int exists = 0;
+
+       orig_value = prodigy192_ak4114_read(ice, addr);
+       prodigy192_ak4114_write(ice, addr, test_data);
+       if (prodigy192_ak4114_read(ice, addr) == test_data) {
+               /* ak4114 seems to communicate, apparently exists */
+               /* writing back original value */
+               prodigy192_ak4114_write(ice, addr, orig_value);
+               exists = 1;
+       }
+       return exists;
+}
 
 /*
  * initialize the chip
@@ -477,6 +731,7 @@ 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,
@@ -487,15 +742,46 @@ static int __devinit prodigy192_init(struct snd_ice1712 *ice)
                (unsigned short)-1
        };
        const unsigned short *p;
+       int err = 0;
+       struct snd_akm4xxx *ak;
+       struct prodigy192_spec *spec;
 
        /* prodigy 192 */
        ice->num_total_dacs = 6;
        ice->num_total_adcs = 2;
+       ice->vt1720 = 0;  /* ice1724, e.g. 23 GPIOs */
        
+       spec = kzalloc(sizeof(*spec), GFP_KERNEL);
+       if (!spec)
+               return -ENOMEM;
+       ice->spec = spec;
+       mutex_init(&spec->mute_mutex);
+
        /* initialize codec */
        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)) {
+               err = prodigy192_ak4114_init(ice);
+               /* from this moment if err = 0 then
+                * spec->ak4114 should not be null
+                */
+               snd_printdd("AK4114 initialized with status %d\n", err);
+       } else
+               snd_printdd("AK4114 not found\n");
+       if (err < 0)
+               return err;
 
        return 0;
 }
@@ -506,25 +792,31 @@ static int __devinit prodigy192_init(struct snd_ice1712 *ice)
  * hence the driver needs to sets up it properly.
  */
 
-static const unsigned char prodigy71_eeprom[] __devinitdata = {
-       [ICE_EEP2_SYSCONF]     = 0x2b,  /* clock 512, mpu401, spdif-in/ADC, 4DACs */
+static unsigned char prodigy71_eeprom[] __devinitdata = {
+       [ICE_EEP2_SYSCONF]     = 0x6a,  /* 49MHz crystal, mpu401,
+                                        * spdif-in+ 1 stereo ADC,
+                                        * 3 stereo DACs
+                                        */
        [ICE_EEP2_ACLINK]      = 0x80,  /* I2S */
        [ICE_EEP2_I2S]         = 0xf8,  /* vol, 96k, 24bit, 192k */
        [ICE_EEP2_SPDIF]       = 0xc3,  /* out-en, out-int, spdif-in */
        [ICE_EEP2_GPIO_DIR]    = 0xff,
-       [ICE_EEP2_GPIO_DIR1]   = 0xff,
+       [ICE_EEP2_GPIO_DIR1]   = ~(VT1724_PRODIGY192_CDIN >> 8) ,
        [ICE_EEP2_GPIO_DIR2]   = 0xbf,
        [ICE_EEP2_GPIO_MASK]   = 0x00,
        [ICE_EEP2_GPIO_MASK1]  = 0x00,
        [ICE_EEP2_GPIO_MASK2]  = 0x00,
        [ICE_EEP2_GPIO_STATE]  = 0x00,
        [ICE_EEP2_GPIO_STATE1] = 0x00,
-       [ICE_EEP2_GPIO_STATE2] = 0x00,
+       [ICE_EEP2_GPIO_STATE2] = 0x10,  /* GPIO20: 0 = CD drive dig. input
+                                        * passthrough,
+                                        * 1 = SPDIF-OUT from ice1724
+                                        */
 };
 
 
 /* entry point */
-const struct snd_ice1712_card_info snd_vt1724_prodigy192_cards[] __devinitdata = {
+struct snd_ice1712_card_info snd_vt1724_prodigy192_cards[] __devinitdata = {
        {
                .subvendor = VT1724_SUBDEVICE_PRODIGY192VE,
                .name = "Audiotrak Prodigy 192",
@@ -533,6 +825,10 @@ const 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 */
 };