[ALSA] ice1724 - Functioning support for Prodigy 192

Fixes:
--------
* correct card specific ice1724 initialization
* working IEC958 output of the card
* renamed capture controls
New features:
------------------
* analog input switch (line-in/mic)
* optional ak4114 based MI/ODI/O card detection & support: IEC958 input,
  digital input switch (toslink/coax)
Unresolved issues
-----------------------
* Analog and digital input enums are listed on playback panel of alsamixer,
  I do not know how to push them onto the capture one.

Signed-off-by: Pavel Hofman <dustin@seznam.cz>
Signed-off-by: Takashi Iwai <tiwai@suse.de>
Signed-off-by: Jaroslav Kysela <perex@suse.cz>

sound/pci/ice1712/ice1712.h

@@ -397,6 +397,9 @@ struct snd_ice1712 {
 			struct ak4114 *ak4114;
 			unsigned int analog: 1;
 		} juli;
+		struct {
+			struct ak4114 *ak4114;
+		} prodigy192;
 	} spec;
 
 };

sound/pci/ice1712/prodigy192.c

@@ -2,6 +2,30 @@
  *   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)
  *
  *	Copyright (c) 2003 Takashi Iwai <tiwai@suse.de>
  *      Copyright (c) 2003 Dimitromanolakis Apostolos <apostol@cs.utoronto.ca>
@@ -356,6 +380,47 @@ static int aureon_oversampling_put(struct snd_kcontrol *kcontrol, struct snd_ctl
 	return 0;
 }
 #endif
+static int stac9460_mic_sw_info(struct snd_kcontrol *kcontrol,
+	       			struct snd_ctl_elem_info *uinfo)
+{
+	static char *texts[2] = { "Line In", "Mic" };
+
+	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 stac9460_mic_sw_get(struct snd_kcontrol *kcontrol,
+	       		struct snd_ctl_elem_value *ucontrol)
+{
+	struct snd_ice1712 *ice = snd_kcontrol_chip(kcontrol);
+	unsigned char val;
+		
+	val = stac9460_get(ice, STAC946X_GENERAL_PURPOSE);
+	ucontrol->value.enumerated.item[0] = (val >> 7) & 0x1;
+	return 0;
+}
+
+static int stac9460_mic_sw_put(struct snd_kcontrol *kcontrol,
+	       		struct snd_ctl_elem_value *ucontrol)
+{
+	struct snd_ice1712 *ice = snd_kcontrol_chip(kcontrol);
+	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;
+}
 
 static const DECLARE_TLV_DB_SCALE(db_scale_dac, -19125, 75, 0);
 static const DECLARE_TLV_DB_SCALE(db_scale_adc, 0, 150, 0);
@@ -406,7 +471,7 @@ static 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,
@@ -417,13 +482,21 @@ static 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 }
 	},
+	{
+		.iface = SNDRV_CTL_ELEM_IFACE_MIXER,
+		.name = "Analog Capture Input",
+		.info = stac9460_mic_sw_info,
+		.get = stac9460_mic_sw_get,
+		.put = stac9460_mic_sw_put,
+
+	},
 #if 0
 	{
 		.iface = SNDRV_CTL_ELEM_IFACE_MIXER,
@@ -456,19 +529,258 @@ static struct snd_kcontrol_new stac_controls[] __devinitdata = {
 #endif
 };
 
+
+/* 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 const struct snd_kcontrol_new ak4114_controls[] __devinitdata = {
+	{
+		.iface = SNDRV_CTL_ELEM_IFACE_MIXER,
+		.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,
+		AK4114_DIF_I24I2S, /* ice1724 expects I2S and provides clock */
+		AK4114_TX1E,
+		AK4114_EFH_1024 | AK4114_DIT, /* default input RX0 */
+		0,
+		0
+	};
+	static const unsigned char ak4114_init_txcsb[] = {
+		0x41, 0x02, 0x2c, 0x00, 0x00
+	};
+
+	return snd_ak4114_create(ice->card,
+				 prodigy192_ak4114_read,
+				 prodigy192_ak4114_write,
+				 ak4114_init_vals, ak4114_init_txcsb,
+				 ice, &ice->spec.prodigy192.ak4114);
+}
+
 static int __devinit prodigy192_add_controls(struct snd_ice1712 *ice)
 {
 	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 (ice->spec.prodigy192.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(ice->spec.prodigy192.ak4114,
+				NULL, /* ak4114 in MIO/DI/O handles no IEC958 output */
+				ice->pcm->streams[SNDRV_PCM_STREAM_CAPTURE].substream);
 		if (err < 0)
 			return err;
 	}
 	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
@@ -487,16 +799,30 @@ static int __devinit prodigy192_init(struct snd_ice1712 *ice)
 		(unsigned short)-1
 	};
 	const unsigned short *p;
+	int err = 0;
 
 	/* prodigy 192 */
 	ice->num_total_dacs = 6;
 	ice->num_total_adcs = 2;
+	ice->vt1720 = 0;  /* ice1724, e.g. 23 GPIOs */
 	
 	/* initialize codec */
 	p = stac_inits_prodigy;
 	for (; *p != (unsigned short)-1; p += 2)
 		stac9460_put(ice, p[0], p[1]);
 
+	/* 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
+		 * ice->spec.prodigy192.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;
 }
 
@@ -507,19 +833,25 @@ static int __devinit prodigy192_init(struct snd_ice1712 *ice)
  */
 
 static unsigned char prodigy71_eeprom[] __devinitdata = {
-	[ICE_EEP2_SYSCONF]     = 0x2b,	/* clock 512, mpu401, spdif-in/ADC, 4DACs */
+	[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
+					 */
 };
 
 

sound/pci/ice1712/prodigy192.h

@@ -5,6 +5,14 @@
 #define PRODIGY192_STAC9460_ADDR	0x54
 
 #define VT1724_SUBDEVICE_PRODIGY192VE	 0x34495345	/* PRODIGY 192 VE */
+/*
+ *  AudioTrak Prodigy192 GPIO definitions for MI/ODI/O card with
+ *  AK4114 (SPDIF-IN)
+ */
+#define VT1724_PRODIGY192_CS	(1 << 8)	/* GPIO8, pin 75 */
+#define VT1724_PRODIGY192_CCLK	(1 << 9)	/* GPIO9, pin 76 */
+#define VT1724_PRODIGY192_CDOUT	(1 << 10)	/* GPIO10, pin 77 */
+#define VT1724_PRODIGY192_CDIN	(1 << 11)	/* GPIO11, pin 86 */
 
 extern struct snd_ice1712_card_info  snd_vt1724_prodigy192_cards[];