[ALSA] Add echoaudio sound drivers

From: Giuliano Pochini <pochini@shiny.it>Add echoaudio sound drivers (darla20, darla24, echo3g, gina20, gina24,
indigo, indigodj, indigoio, layla20, lala24, mia, mona)
Signed-off-by: NTakashi Iwai <tiwai@suse.de>
Signed-off-by: NJaroslav Kysela <perex@suse.cz>

Documentation/sound/alsa/ALSA-Configuration.txt

@@ -472,6 +472,22 @@ Prior to version 0.9.0rc4 options had a 'snd_' prefix. This was removed.
 
     The power-management is supported.
 
+  Module snd-darla20
+  ------------------
+
+    Module for Echoaudio Darla20
+
+    This module supports multiple cards.
+    The driver requires the firmware loader support on kernel.
+
+  Module snd-darla24
+  ------------------
+
+    Module for Echoaudio Darla24
+
+    This module supports multiple cards.
+    The driver requires the firmware loader support on kernel.
+
   Module snd-dt019x
   -----------------
 
@@ -499,6 +515,14 @@ Prior to version 0.9.0rc4 options had a 'snd_' prefix. This was removed.
 
     The power-management is supported.
 
+  Module snd-echo3g
+  -----------------
+
+    Module for Echoaudio 3G cards (Gina3G/Layla3G)
+
+    This module supports multiple cards.
+    The driver requires the firmware loader support on kernel.
+
   Module snd-emu10k1
   ------------------
 
@@ -657,6 +681,22 @@ Prior to version 0.9.0rc4 options had a 'snd_' prefix. This was removed.
     
     The power-management is supported.
 
+  Module snd-gina20
+  -----------------
+
+    Module for Echoaudio Gina20
+
+    This module supports multiple cards.
+    The driver requires the firmware loader support on kernel.
+
+  Module snd-gina24
+  -----------------
+
+    Module for Echoaudio Gina24
+
+    This module supports multiple cards.
+    The driver requires the firmware loader support on kernel.
+
   Module snd-gusclassic
   ---------------------
 
@@ -937,6 +977,30 @@ Prior to version 0.9.0rc4 options had a 'snd_' prefix. This was removed.
 	  driver isn't configured properly or you want to try another
 	  type for testing.
 
+  Module snd-indigo
+  -----------------
+
+    Module for Echoaudio Indigo
+
+    This module supports multiple cards.
+    The driver requires the firmware loader support on kernel.
+
+  Module snd-indigodj
+  -------------------
+
+    Module for Echoaudio Indigo DJ
+
+    This module supports multiple cards.
+    The driver requires the firmware loader support on kernel.
+
+  Module snd-indigoio
+  -------------------
+
+    Module for Echoaudio Indigo IO
+
+    This module supports multiple cards.
+    The driver requires the firmware loader support on kernel.
+
   Module snd-intel8x0
   -------------------
 
@@ -1036,6 +1100,22 @@ Prior to version 0.9.0rc4 options had a 'snd_' prefix. This was removed.
 
     This module supports multiple cards.
 
+  Module snd-layla20
+  ------------------
+
+    Module for Echoaudio Layla20
+
+    This module supports multiple cards.
+    The driver requires the firmware loader support on kernel.
+
+  Module snd-layla24
+  ------------------
+
+    Module for Echoaudio Layla24
+
+    This module supports multiple cards.
+    The driver requires the firmware loader support on kernel.
+
   Module snd-maestro3
   -------------------
 
@@ -1056,6 +1136,14 @@ Prior to version 0.9.0rc4 options had a 'snd_' prefix. This was removed.
 
     The power-management is supported.
 
+  Module snd-mia
+  ---------------
+
+    Module for Echoaudio Mia
+
+    This module supports multiple cards.
+    The driver requires the firmware loader support on kernel.
+
   Module snd-miro
   ---------------
 
@@ -1088,6 +1176,14 @@ Prior to version 0.9.0rc4 options had a 'snd_' prefix. This was removed.
     When no hotplug fw loader is available, you need to load the
     firmware via mixartloader utility in alsa-tools package.
 
+  Module snd-mona
+  ---------------
+
+    Module for Echoaudio Mona
+
+    This module supports multiple cards.
+    The driver requires the firmware loader support on kernel.
+
   Module snd-mpu401
   -----------------
 

sound/pci/Kconfig

@@ -233,6 +233,143 @@ config SND_CS5535AUDIO
 	  To compile this driver as a module, choose M here: the module
 	  will be called snd-cs5535audio.
 
+config SND_DARLA20
+	tristate "(Echoaudio) Darla20"
+	depends on SND
+	depends on FW_LOADER
+	select SND_PCM
+	help
+	  Say 'Y' or 'M' to include support for Echoaudio Darla.
+
+	  To compile this driver as a module, choose M here: the module
+	  will be called snd-darla20
+
+config SND_GINA20
+	tristate "(Echoaudio) Gina20"
+	depends on SND
+	depends on FW_LOADER
+	select SND_PCM
+	help
+	  Say 'Y' or 'M' to include support for Echoaudio Gina.
+
+	  To compile this driver as a module, choose M here: the module
+	  will be called snd-gina20
+
+config SND_LAYLA20
+	tristate "(Echoaudio) Layla20"
+	depends on SND
+	depends on FW_LOADER
+	select SND_RAWMIDI
+	select SND_PCM
+	help
+	  Say 'Y' or 'M' to include support for Echoaudio Layla.
+
+	  To compile this driver as a module, choose M here: the module
+	  will be called snd-layla20
+
+config SND_DARLA24
+	tristate "(Echoaudio) Darla24"
+	depends on SND
+	depends on FW_LOADER
+	select SND_PCM
+	help
+	  Say 'Y' or 'M' to include support for Echoaudio Darla24.
+
+	  To compile this driver as a module, choose M here: the module
+	  will be called snd-darla24
+
+config SND_GINA24
+	tristate "(Echoaudio) Gina24"
+	depends on SND
+	depends on FW_LOADER
+	select SND_PCM
+	help
+	  Say 'Y' or 'M' to include support for Echoaudio Gina24.
+
+	  To compile this driver as a module, choose M here: the module
+	  will be called snd-gina24
+
+config SND_LAYLA24
+	tristate "(Echoaudio) Layla24"
+	depends on SND
+	depends on FW_LOADER
+	select SND_RAWMIDI
+	select SND_PCM
+	help
+	  Say 'Y' or 'M' to include support for Echoaudio Layla24.
+
+	  To compile this driver as a module, choose M here: the module
+	  will be called snd-layla24
+
+config SND_MONA
+	tristate "(Echoaudio) Mona"
+	depends on SND
+	depends on FW_LOADER
+	select SND_RAWMIDI
+	select SND_PCM
+	help
+	  Say 'Y' or 'M' to include support for Echoaudio Mona.
+
+	  To compile this driver as a module, choose M here: the module
+	  will be called snd-mona
+
+config SND_MIA
+	tristate "(Echoaudio) Mia"
+	depends on SND
+	depends on FW_LOADER
+	select SND_RAWMIDI
+	select SND_PCM
+	help
+	  Say 'Y' or 'M' to include support for Echoaudio Mia and Mia-midi.
+
+	  To compile this driver as a module, choose M here: the module
+	  will be called snd-mia
+
+config SND_ECHO3G
+	tristate "(Echoaudio) 3G cards"
+	depends on SND
+	depends on FW_LOADER
+	select SND_RAWMIDI
+	select SND_PCM
+	help
+	  Say 'Y' or 'M' to include support for Echoaudio Gina3G and Layla3G.
+
+	  To compile this driver as a module, choose M here: the module
+	  will be called snd-echo3g
+
+config SND_INDIGO
+	tristate "(Echoaudio) Indigo"
+	depends on SND
+	depends on FW_LOADER
+	select SND_PCM
+	help
+	  Say 'Y' or 'M' to include support for Echoaudio Indigo.
+
+	  To compile this driver as a module, choose M here: the module
+	  will be called snd-indigo
+
+config SND_INDIGOIO
+	tristate "(Echoaudio) Indigo IO"
+	depends on SND
+	depends on FW_LOADER
+	select SND_PCM
+	help
+	  Say 'Y' or 'M' to include support for Echoaudio Indigo IO.
+
+	  To compile this driver as a module, choose M here: the module
+	  will be called snd-indigoio
+
+config SND_INDIGODJ
+	tristate "(Echoaudio) Indigo DJ"
+	depends on SND
+	depends on FW_LOADER
+	select SND_PCM
+	help
+	  Say 'Y' or 'M' to include support for Echoaudio Indigo DJ.
+
+	  To compile this driver as a module, choose M here: the module
+	  will be called snd-indigodj
+
 config SND_EMU10K1
 	tristate "Emu10k1 (SB Live!, Audigy, E-mu APS)"
 	depends on SND

sound/pci/Makefile

@@ -57,6 +57,7 @@ obj-$(CONFIG_SND) += \
 	ca0106/ \
 	cs46xx/ \
 	cs5535audio/ \
+	echoaudio/ \
 	emu10k1/ \
 	hda/ \
 	ice1712/ \

sound/pci/echoaudio/Makefile

+#
+# Makefile for ALSA Echoaudio soundcard drivers
+# Copyright (c) 2003 by Giuliano Pochini <pochini@shiny.it>
+#
+
+snd-darla20-objs := darla20.o
+snd-gina20-objs := gina20.o
+snd-layla20-objs := layla20.o
+snd-darla24-objs := darla24.o
+snd-gina24-objs := gina24.o
+snd-layla24-objs := layla24.o
+snd-mona-objs := mona.o
+snd-mia-objs := mia.o
+snd-echo3g-objs := echo3g.o
+snd-indigo-objs := indigo.o
+snd-indigoio-objs := indigoio.o
+snd-indigodj-objs := indigodj.o

sound/pci/echoaudio/darla20.c

+/*
+ *  ALSA driver for Echoaudio soundcards.
+ *  Copyright (C) 2003-2004 Giuliano Pochini <pochini@shiny.it>
+ *
+ *  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; version 2 of the License.
+ *
+ *  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.
+ */
+
+#define ECHOGALS_FAMILY
+#define ECHOCARD_DARLA20
+#define ECHOCARD_NAME "Darla20"
+#define ECHOCARD_HAS_MONITOR
+
+/* Pipe indexes */
+#define PX_ANALOG_OUT	0	/* 8 */
+#define PX_DIGITAL_OUT	8	/* 0 */
+#define PX_ANALOG_IN	8	/* 2 */
+#define PX_DIGITAL_IN	10	/* 0 */
+#define PX_NUM		10
+
+/* Bus indexes */
+#define BX_ANALOG_OUT	0	/* 8 */
+#define BX_DIGITAL_OUT	8	/* 0 */
+#define BX_ANALOG_IN	8	/* 2 */
+#define BX_DIGITAL_IN	10	/* 0 */
+#define BX_NUM		10
+
+
+#include <sound/driver.h>
+#include <linux/delay.h>
+#include <linux/init.h>
+#include <linux/interrupt.h>
+#include <linux/pci.h>
+#include <linux/slab.h>
+#include <linux/moduleparam.h>
+#include <linux/firmware.h>
+#include <sound/core.h>
+#include <sound/info.h>
+#include <sound/control.h>
+#include <sound/pcm.h>
+#include <sound/pcm_params.h>
+#include <sound/asoundef.h>
+#include <sound/initval.h>
+#include <asm/io.h>
+#include <asm/atomic.h>
+#include "echoaudio.h"
+
+#define FW_DARLA20_DSP	0
+
+static const struct firmware card_fw[] = {
+	{0, "darla20_dsp.fw"}
+};
+
+static struct pci_device_id snd_echo_ids[] = {
+	{0x1057, 0x1801, 0xECC0, 0x0010, 0, 0, 0},	/* DSP 56301 Darla20 rev.0 */
+	{0,}
+};
+
+static struct snd_pcm_hardware pcm_hardware_skel = {
+	.info = SNDRV_PCM_INFO_MMAP |
+		SNDRV_PCM_INFO_INTERLEAVED |
+		SNDRV_PCM_INFO_BLOCK_TRANSFER |
+		SNDRV_PCM_INFO_MMAP_VALID |
+		SNDRV_PCM_INFO_PAUSE |
+		SNDRV_PCM_INFO_SYNC_START,
+	.formats =	SNDRV_PCM_FMTBIT_U8 |
+			SNDRV_PCM_FMTBIT_S16_LE |
+			SNDRV_PCM_FMTBIT_S24_3LE |
+			SNDRV_PCM_FMTBIT_S32_LE |
+			SNDRV_PCM_FMTBIT_S32_BE,
+	.rates = SNDRV_PCM_RATE_44100 | SNDRV_PCM_RATE_48000,
+	.rate_min = 44100,
+	.rate_max = 48000,
+	.channels_min = 1,
+	.channels_max = 2,
+	.buffer_bytes_max = 262144,
+	.period_bytes_min = 32,
+	.period_bytes_max = 131072,
+	.periods_min = 2,
+	.periods_max = 220,
+	/* One page (4k) contains 512 instructions. I don't know if the hw
+	supports lists longer than this. In this case periods_max=220 is a
+	safe limit to make sure the list never exceeds 512 instructions. */
+};
+
+
+#include "darla20_dsp.c"
+#include "echoaudio_dsp.c"
+#include "echoaudio.c"

sound/pci/echoaudio/darla20_dsp.c

+/***************************************************************************
+
+   Copyright Echo Digital Audio Corporation (c) 1998 - 2004
+   All rights reserved
+   www.echoaudio.com
+
+   This file is part of Echo Digital Audio's generic driver library.
+
+   Echo Digital Audio's generic driver library 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.
+
+   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.
+
+   *************************************************************************
+
+ Translation from C++ and adaptation for use in ALSA-Driver
+ were made by Giuliano Pochini <pochini@shiny.it>
+
+****************************************************************************/
+
+
+static int init_hw(struct echoaudio *chip, u16 device_id, u16 subdevice_id)
+{
+	int err;
+
+	DE_INIT(("init_hw() - Darla20\n"));
+	snd_assert((subdevice_id & 0xfff0) == DARLA20, return -ENODEV);
+
+	if ((err = init_dsp_comm_page(chip))) {
+		DE_INIT(("init_hw - could not initialize DSP comm page\n"));
+		return err;
+	}
+
+	chip->device_id = device_id;
+	chip->subdevice_id = subdevice_id;
+	chip->bad_board = TRUE;
+	chip->dsp_code_to_load = &card_fw[FW_DARLA20_DSP];
+	chip->spdif_status = GD_SPDIF_STATUS_UNDEF;
+	chip->clock_state = GD_CLOCK_UNDEF;
+	/* Since this card has no ASIC, mark it as loaded so everything
+	   works OK */
+	chip->asic_loaded = TRUE;
+	chip->input_clock_types = ECHO_CLOCK_BIT_INTERNAL;
+
+	if ((err = load_firmware(chip)) < 0)
+		return err;
+	chip->bad_board = FALSE;
+
+	if ((err = init_line_levels(chip)) < 0)
+		return err;
+
+	DE_INIT(("init_hw done\n"));
+	return err;
+}
+
+
+
+/* The Darla20 has no external clock sources */
+static u32 detect_input_clocks(const struct echoaudio *chip)
+{
+	return ECHO_CLOCK_BIT_INTERNAL;
+}
+
+
+
+/* The Darla20 has no ASIC. Just do nothing */
+static int load_asic(struct echoaudio *chip)
+{
+	return 0;
+}
+
+
+
+static int set_sample_rate(struct echoaudio *chip, u32 rate)
+{
+	u8 clock_state, spdif_status;
+
+	if (wait_handshake(chip))
+		return -EIO;
+
+	switch (rate) {
+	case 44100:
+		clock_state = GD_CLOCK_44;
+		spdif_status = GD_SPDIF_STATUS_44;
+		break;
+	case 48000:
+		clock_state = GD_CLOCK_48;
+		spdif_status = GD_SPDIF_STATUS_48;
+		break;
+	default:
+		clock_state = GD_CLOCK_NOCHANGE;
+		spdif_status = GD_SPDIF_STATUS_NOCHANGE;
+		break;
+	}
+
+	if (chip->clock_state == clock_state)
+		clock_state = GD_CLOCK_NOCHANGE;
+	if (spdif_status == chip->spdif_status)
+		spdif_status = GD_SPDIF_STATUS_NOCHANGE;
+
+	chip->comm_page->sample_rate = cpu_to_le32(rate);
+	chip->comm_page->gd_clock_state = clock_state;
+	chip->comm_page->gd_spdif_status = spdif_status;
+	chip->comm_page->gd_resampler_state = 3;	/* magic number - should always be 3 */
+
+	/* Save the new audio state if it changed */
+	if (clock_state != GD_CLOCK_NOCHANGE)
+		chip->clock_state = clock_state;
+	if (spdif_status != GD_SPDIF_STATUS_NOCHANGE)
+		chip->spdif_status = spdif_status;
+	chip->sample_rate = rate;
+
+	clear_handshake(chip);
+	return send_vector(chip, DSP_VC_SET_GD_AUDIO_STATE);
+}

sound/pci/echoaudio/darla24.c

+/*
+ *  ALSA driver for Echoaudio soundcards.
+ *  Copyright (C) 2003-2004 Giuliano Pochini <pochini@shiny.it>
+ *
+ *  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; version 2 of the License.
+ *
+ *  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.
+ */
+
+#define ECHOGALS_FAMILY
+#define ECHOCARD_DARLA24
+#define ECHOCARD_NAME "Darla24"
+#define ECHOCARD_HAS_MONITOR
+#define ECHOCARD_HAS_INPUT_NOMINAL_LEVEL
+#define ECHOCARD_HAS_OUTPUT_NOMINAL_LEVEL
+#define ECHOCARD_HAS_EXTERNAL_CLOCK
+#define ECHOCARD_HAS_SUPER_INTERLEAVE
+
+/* Pipe indexes */
+#define PX_ANALOG_OUT	0	/* 8 */
+#define PX_DIGITAL_OUT	8	/* 0 */
+#define PX_ANALOG_IN	8	/* 2 */
+#define PX_DIGITAL_IN	10	/* 0 */
+#define PX_NUM		10
+
+/* Bus indexes */
+#define BX_ANALOG_OUT	0	/* 8 */
+#define BX_DIGITAL_OUT	8	/* 0 */
+#define BX_ANALOG_IN	8	/* 2 */
+#define BX_DIGITAL_IN	10	/* 0 */
+#define BX_NUM		10
+
+
+#include <sound/driver.h>
+#include <linux/delay.h>
+#include <linux/init.h>
+#include <linux/interrupt.h>
+#include <linux/pci.h>
+#include <linux/slab.h>
+#include <linux/moduleparam.h>
+#include <linux/firmware.h>
+#include <sound/core.h>
+#include <sound/info.h>
+#include <sound/control.h>
+#include <sound/pcm.h>
+#include <sound/pcm_params.h>
+#include <sound/asoundef.h>
+#include <sound/initval.h>
+#include <asm/io.h>
+#include <asm/atomic.h>
+#include "echoaudio.h"
+
+#define FW_DARLA24_DSP	0
+
+static const struct firmware card_fw[] = {
+	{0, "darla24_dsp.fw"}
+};
+
+static struct pci_device_id snd_echo_ids[] = {
+	{0x1057, 0x1801, 0xECC0, 0x0040, 0, 0, 0},	/* DSP 56301 Darla24 rev.0 */
+	{0x1057, 0x1801, 0xECC0, 0x0041, 0, 0, 0},	/* DSP 56301 Darla24 rev.1 */
+	{0,}
+};
+
+static struct snd_pcm_hardware pcm_hardware_skel = {
+	.info = SNDRV_PCM_INFO_MMAP |
+		SNDRV_PCM_INFO_INTERLEAVED |
+		SNDRV_PCM_INFO_BLOCK_TRANSFER |
+		SNDRV_PCM_INFO_MMAP_VALID |
+		SNDRV_PCM_INFO_PAUSE |
+		SNDRV_PCM_INFO_SYNC_START,
+	.formats =	SNDRV_PCM_FMTBIT_U8 |
+			SNDRV_PCM_FMTBIT_S16_LE |
+			SNDRV_PCM_FMTBIT_S24_3LE |
+			SNDRV_PCM_FMTBIT_S32_LE |
+			SNDRV_PCM_FMTBIT_S32_BE,
+	.rates =	SNDRV_PCM_RATE_8000_48000 |
+			SNDRV_PCM_RATE_88200 |
+			SNDRV_PCM_RATE_96000,
+	.rate_min = 8000,
+	.rate_max = 96000,
+	.channels_min = 1,
+	.channels_max = 8,
+	.buffer_bytes_max = 262144,
+	.period_bytes_min = 32,
+	.period_bytes_max = 131072,
+	.periods_min = 2,
+	.periods_max = 220,
+	/* One page (4k) contains 512 instructions. I don't know if the hw
+	supports lists longer than this. In this case periods_max=220 is a
+	safe limit to make sure the list never exceeds 512 instructions. */
+};
+
+
+#include "darla24_dsp.c"
+#include "echoaudio_dsp.c"
+#include "echoaudio.c"

sound/pci/echoaudio/darla24_dsp.c

+/***************************************************************************
+
+   Copyright Echo Digital Audio Corporation (c) 1998 - 2004
+   All rights reserved
+   www.echoaudio.com
+
+   This file is part of Echo Digital Audio's generic driver library.
+
+   Echo Digital Audio's generic driver library 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.
+
+   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.
+
+   *************************************************************************
+
+ Translation from C++ and adaptation for use in ALSA-Driver
+ were made by Giuliano Pochini <pochini@shiny.it>
+
+****************************************************************************/
+
+
+static int init_hw(struct echoaudio *chip, u16 device_id, u16 subdevice_id)
+{
+	int err;
+
+	DE_INIT(("init_hw() - Darla24\n"));
+	snd_assert((subdevice_id & 0xfff0) == DARLA24, return -ENODEV);
+
+	if ((err = init_dsp_comm_page(chip))) {
+		DE_INIT(("init_hw - could not initialize DSP comm page\n"));
+		return err;
+	}
+
+	chip->device_id = device_id;
+	chip->subdevice_id = subdevice_id;
+	chip->bad_board = TRUE;
+	chip->dsp_code_to_load = &card_fw[FW_DARLA24_DSP];
+	/* Since this card has no ASIC, mark it as loaded so everything
+	   works OK */
+	chip->asic_loaded = TRUE;
+	chip->input_clock_types = ECHO_CLOCK_BIT_INTERNAL |
+		ECHO_CLOCK_BIT_ESYNC;
+
+	if ((err = load_firmware(chip)) < 0)
+		return err;
+	chip->bad_board = FALSE;
+
+	if ((err = init_line_levels(chip)) < 0)
+		return err;
+
+	DE_INIT(("init_hw done\n"));
+	return err;
+}
+
+
+
+static u32 detect_input_clocks(const struct echoaudio *chip)
+{
+	u32 clocks_from_dsp, clock_bits;
+
+	/* Map the DSP clock detect bits to the generic driver clock
+	   detect bits */
+	clocks_from_dsp = le32_to_cpu(chip->comm_page->status_clocks);
+
+	clock_bits = ECHO_CLOCK_BIT_INTERNAL;
+
+	if (clocks_from_dsp & GLDM_CLOCK_DETECT_BIT_ESYNC)
+		clock_bits |= ECHO_CLOCK_BIT_ESYNC;
+
+	return clock_bits;
+}
+
+
+
+/* The Darla24 has no ASIC. Just do nothing */
+static int load_asic(struct echoaudio *chip)
+{
+	return 0;
+}
+
+
+
+static int set_sample_rate(struct echoaudio *chip, u32 rate)
+{
+	u8 clock;
+
+	switch (rate) {
+	case 96000:
+		clock = GD24_96000;
+		break;
+	case 88200:
+		clock = GD24_88200;
+		break;
+	case 48000:
+		clock = GD24_48000;
+		break;
+	case 44100:
+		clock = GD24_44100;
+		break;
+	case 32000:
+		clock = GD24_32000;
+		break;
+	case 22050:
+		clock = GD24_22050;
+		break;
+	case 16000:
+		clock = GD24_16000;
+		break;
+	case 11025:
+		clock = GD24_11025;
+		break;
+	case 8000:
+		clock = GD24_8000;
+		break;
+	default:
+		DE_ACT(("set_sample_rate: Error, invalid sample rate %d\n",
+			rate));
+		return -EINVAL;
+	}
+
+	if (wait_handshake(chip))
+		return -EIO;
+
+	DE_ACT(("set_sample_rate: %d clock %d\n", rate, clock));
+	chip->sample_rate = rate;
+
+	/* Override the sample rate if this card is set to Echo sync. */
+	if (chip->input_clock == ECHO_CLOCK_ESYNC)
+		clock = GD24_EXT_SYNC;
+
+	chip->comm_page->sample_rate = cpu_to_le32(rate);	/* ignored by the DSP ? */
+	chip->comm_page->gd_clock_state = clock;
+	clear_handshake(chip);
+	return send_vector(chip, DSP_VC_SET_GD_AUDIO_STATE);
+}
+
+
+
+static int set_input_clock(struct echoaudio *chip, u16 clock)
+{
+	snd_assert(clock == ECHO_CLOCK_INTERNAL ||
+		   clock == ECHO_CLOCK_ESYNC, return -EINVAL);
+	chip->input_clock = clock;
+	return set_sample_rate(chip, chip->sample_rate);
+}
+

sound/pci/echoaudio/echo3g.c

+/*
+ *  ALSA driver for Echoaudio soundcards.
+ *  Copyright (C) 2003-2004 Giuliano Pochini <pochini@shiny.it>
+ *
+ *  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; version 2 of the License.
+ *
+ *  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.
+ */
+
+#define ECHO3G_FAMILY
+#define ECHOCARD_ECHO3G
+#define ECHOCARD_NAME "Echo3G"
+#define ECHOCARD_HAS_MONITOR
+#define ECHOCARD_HAS_ASIC
+#define ECHOCARD_HAS_INPUT_NOMINAL_LEVEL
+#define ECHOCARD_HAS_OUTPUT_NOMINAL_LEVEL
+#define ECHOCARD_HAS_SUPER_INTERLEAVE
+#define ECHOCARD_HAS_DIGITAL_IO
+#define ECHOCARD_HAS_DIGITAL_MODE_SWITCH
+#define ECHOCARD_HAS_ADAT	6
+#define ECHOCARD_HAS_EXTERNAL_CLOCK
+#define ECHOCARD_HAS_STEREO_BIG_ENDIAN32
+#define ECHOCARD_HAS_MIDI
+#define ECHOCARD_HAS_PHANTOM_POWER
+
+/* Pipe indexes */
+#define PX_ANALOG_OUT	0
+#define PX_DIGITAL_OUT	chip->px_digital_out
+#define PX_ANALOG_IN	chip->px_analog_in
+#define PX_DIGITAL_IN	chip->px_digital_in
+#define PX_NUM		chip->px_num
+
+/* Bus indexes */
+#define BX_ANALOG_OUT	0
+#define BX_DIGITAL_OUT	chip->bx_digital_out
+#define BX_ANALOG_IN	chip->bx_analog_in
+#define BX_DIGITAL_IN	chip->bx_digital_in
+#define BX_NUM		chip->bx_num
+
+
+#include <sound/driver.h>
+#include <linux/delay.h>
+#include <linux/init.h>
+#include <linux/interrupt.h>
+#include <linux/pci.h>
+#include <linux/slab.h>
+#include <linux/moduleparam.h>
+#include <linux/firmware.h>
+#include <sound/core.h>
+#include <sound/info.h>
+#include <sound/control.h>
+#include <sound/pcm.h>
+#include <sound/pcm_params.h>
+#include <sound/asoundef.h>
+#include <sound/initval.h>
+#include <sound/rawmidi.h>
+#include <asm/io.h>
+#include <asm/atomic.h>
+#include "echoaudio.h"
+
+#define FW_361_LOADER	0
+#define FW_ECHO3G_DSP	1
+#define FW_3G_ASIC	2
+
+static const struct firmware card_fw[] = {
+	{0, "loader_dsp.fw"},
+	{0, "echo3g_dsp.fw"},
+	{0, "3g_asic.fw"}
+};
+
+static struct pci_device_id snd_echo_ids[] = {
+	{0x1057, 0x3410, 0xECC0, 0x0100, 0, 0, 0},	/* Echo 3G */
+	{0,}
+};
+
+static struct snd_pcm_hardware pcm_hardware_skel = {
+	.info = SNDRV_PCM_INFO_MMAP |
+		SNDRV_PCM_INFO_INTERLEAVED |
+		SNDRV_PCM_INFO_BLOCK_TRANSFER |
+		SNDRV_PCM_INFO_MMAP_VALID |
+		SNDRV_PCM_INFO_PAUSE |
+		SNDRV_PCM_INFO_SYNC_START,
+	.formats =	SNDRV_PCM_FMTBIT_U8 |
+			SNDRV_PCM_FMTBIT_S16_LE |
+			SNDRV_PCM_FMTBIT_S24_3LE |
+			SNDRV_PCM_FMTBIT_S32_LE |
+			SNDRV_PCM_FMTBIT_S32_BE,
+	.rates = 	SNDRV_PCM_RATE_32000 |
+			SNDRV_PCM_RATE_44100 |
+			SNDRV_PCM_RATE_48000 |
+			SNDRV_PCM_RATE_88200 |
+			SNDRV_PCM_RATE_96000 |
+			SNDRV_PCM_RATE_CONTINUOUS,
+	.rate_min = 32000,
+	.rate_max = 100000,
+	.channels_min = 1,
+	.channels_max = 8,
+	.buffer_bytes_max = 262144,
+	.period_bytes_min = 32,
+	.period_bytes_max = 131072,
+	.periods_min = 2,
+	.periods_max = 220,
+};
+
+#include "echo3g_dsp.c"
+#include "echoaudio_dsp.c"
+#include "echoaudio_3g.c"
+#include "echoaudio.c"
+#include "midi.c"

sound/pci/echoaudio/echo3g_dsp.c

+/****************************************************************************
+
+   Copyright Echo Digital Audio Corporation (c) 1998 - 2004
+   All rights reserved
+   www.echoaudio.com
+
+   This file is part of Echo Digital Audio's generic driver library.
+
+   Echo Digital Audio's generic driver library 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.
+
+   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.
+
+   *************************************************************************
+
+ Translation from C++ and adaptation for use in ALSA-Driver
+ were made by Giuliano Pochini <pochini@shiny.it>
+
+****************************************************************************/
+
+static int load_asic(struct echoaudio *chip);
+static int dsp_set_digital_mode(struct echoaudio *chip, u8 mode);
+static int set_digital_mode(struct echoaudio *chip, u8 mode);
+static int check_asic_status(struct echoaudio *chip);
+static int set_sample_rate(struct echoaudio *chip, u32 rate);
+static int set_input_clock(struct echoaudio *chip, u16 clock);
+static int set_professional_spdif(struct echoaudio *chip, char prof);
+static int set_phantom_power(struct echoaudio *chip, char on);
+static int write_control_reg(struct echoaudio *chip, u32 ctl, u32 frq,
+			     char force);
+
+#include <linux/irq.h>
+
+static int init_hw(struct echoaudio *chip, u16 device_id, u16 subdevice_id)
+{
+	int err;
+
+	local_irq_enable();
+	DE_INIT(("init_hw() - Echo3G\n"));
+	snd_assert((subdevice_id & 0xfff0) == ECHO3G, return -ENODEV);
+
+	if ((err = init_dsp_comm_page(chip))) {
+		DE_INIT(("init_hw - could not initialize DSP comm page\n"));
+		return err;
+	}
+
+	chip->comm_page->e3g_frq_register =
+		__constant_cpu_to_le32((E3G_MAGIC_NUMBER / 48000) - 2);
+	chip->device_id = device_id;
+	chip->subdevice_id = subdevice_id;
+	chip->bad_board = TRUE;
+	chip->has_midi = TRUE;
+	chip->dsp_code_to_load = &card_fw[FW_ECHO3G_DSP];
+
+	/* Load the DSP code and the ASIC on the PCI card and get
+	what type of external box is attached */
+	err = load_firmware(chip);
+
+	if (err < 0) {
+		return err;
+	} else if (err == E3G_GINA3G_BOX_TYPE) {
+		chip->input_clock_types =	ECHO_CLOCK_BIT_INTERNAL |
+						ECHO_CLOCK_BIT_SPDIF |
+						ECHO_CLOCK_BIT_ADAT;
+		chip->card_name = "Gina3G";
+		chip->px_digital_out = chip->bx_digital_out = 6;
+		chip->px_analog_in = chip->bx_analog_in = 14;
+		chip->px_digital_in = chip->bx_digital_in = 16;
+		chip->px_num = chip->bx_num = 24;
+		chip->has_phantom_power = TRUE;
+		chip->hasnt_input_nominal_level = TRUE;
+	} else if (err == E3G_LAYLA3G_BOX_TYPE) {
+		chip->input_clock_types =	ECHO_CLOCK_BIT_INTERNAL |
+						ECHO_CLOCK_BIT_SPDIF |
+						ECHO_CLOCK_BIT_ADAT |
+						ECHO_CLOCK_BIT_WORD;
+		chip->card_name = "Layla3G";
+		chip->px_digital_out = chip->bx_digital_out = 8;
+		chip->px_analog_in = chip->bx_analog_in = 16;
+		chip->px_digital_in = chip->bx_digital_in = 24;
+		chip->px_num = chip->bx_num = 32;
+	} else {
+		return -ENODEV;
+	}
+
+	chip->digital_modes =	ECHOCAPS_HAS_DIGITAL_MODE_SPDIF_RCA |
+				ECHOCAPS_HAS_DIGITAL_MODE_SPDIF_OPTICAL |
+				ECHOCAPS_HAS_DIGITAL_MODE_ADAT;
+	chip->digital_mode =	DIGITAL_MODE_SPDIF_RCA;
+	chip->professional_spdif = FALSE;
+	chip->non_audio_spdif = FALSE;
+	chip->bad_board = FALSE;
+
+	if ((err = init_line_levels(chip)) < 0)
+		return err;
+	err = set_digital_mode(chip, DIGITAL_MODE_SPDIF_RCA);
+	snd_assert(err >= 0, return err);
+	err = set_phantom_power(chip, 0);
+	snd_assert(err >= 0, return err);
+	err = set_professional_spdif(chip, TRUE);
+
+	DE_INIT(("init_hw done\n"));
+	return err;
+}
+
+
+
+static int set_phantom_power(struct echoaudio *chip, char on)
+{
+	u32 control_reg = le32_to_cpu(chip->comm_page->control_register);
+
+	if (on)
+		control_reg |= E3G_PHANTOM_POWER;
+	else
+		control_reg &= ~E3G_PHANTOM_POWER;
+
+	chip->phantom_power = on;
+	return write_control_reg(chip, control_reg,
+				 le32_to_cpu(chip->comm_page->e3g_frq_register),
+				 0);
+}

sound/pci/echoaudio/echoaudio.h

+/****************************************************************************
+
+   Copyright Echo Digital Audio Corporation (c) 1998 - 2004
+   All rights reserved
+   www.echoaudio.com
+
+   This file is part of Echo Digital Audio's generic driver library.
+
+   Echo Digital Audio's generic driver library 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.
+
+   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.
+
+ ****************************************************************************
+
+ Translation from C++ and adaptation for use in ALSA-Driver
+ were made by Giuliano Pochini <pochini@shiny.it>
+
+ ****************************************************************************
+
+
+   Here's a block diagram of how most of the cards work:
+
+                  +-----------+
+           record |           |<-------------------- Inputs
+          <-------|           |        |
+     PCI          | Transport |        |
+     bus          |  engine   |       \|/
+          ------->|           |    +-------+
+            play  |           |--->|monitor|-------> Outputs
+                  +-----------+    | mixer |
+                                   +-------+
+
+   The lines going to and from the PCI bus represent "pipes".  A pipe performs
+   audio transport - moving audio data to and from buffers on the host via
+   bus mastering.
+
+   The inputs and outputs on the right represent input and output "busses."
+   A bus is a physical, real connection to the outside world.  An example
+   of a bus would be the 1/4" analog connectors on the back of Layla or
+   an RCA S/PDIF connector.
+
+   For most cards, there is a one-to-one correspondence between outputs
+   and busses; that is, each individual pipe is hard-wired to a single bus.
+
+   Cards that work this way are Darla20, Gina20, Layla20, Darla24, Gina24,
+   Layla24, Mona, and Indigo.
+
+
+   Mia has a feature called "virtual outputs."
+
+
+                  +-----------+
+           record |           |<----------------------------- Inputs
+          <-------|           |                  |
+     PCI          | Transport |                  |
+     bus          |  engine   |                 \|/
+          ------->|           |   +------+   +-------+
+            play  |           |-->|vmixer|-->|monitor|-------> Outputs
+                  +-----------+   +------+   | mixer |
+                                             +-------+
+
+
+   Obviously, the difference here is the box labeled "vmixer."  Vmixer is
+   short for "virtual output mixer."  For Mia, pipes are *not* hard-wired
+   to a single bus; the vmixer lets you mix any pipe to any bus in any
+   combination.
+
+   Note, however, that the left-hand side of the diagram is unchanged.
+   Transport works exactly the same way - the difference is in the mixer stage.
+
+
+   Pipes and busses are numbered starting at zero.
+
+
+
+   Pipe index
+   ==========
+
+   A number of calls in CEchoGals refer to a "pipe index".  A pipe index is
+   a unique number for a pipe that unambiguously refers to a playback or record
+   pipe.  Pipe indices are numbered starting with analog outputs, followed by
+   digital outputs, then analog inputs, then digital inputs.
+
+   Take Gina24 as an example:
+
+   Pipe index
+
+   0-7            Analog outputs (0 .. FirstDigitalBusOut-1)
+   8-15           Digital outputs (FirstDigitalBusOut .. NumBussesOut-1)
+   16-17          Analog inputs
+   18-25          Digital inputs
+
+
+   You get the pipe index by calling CEchoGals::OpenAudio; the other transport
+   functions take the pipe index as a parameter.  If you need a pipe index for
+   some other reason, use the handy Makepipe_index method.
+
+
+   Some calls take a CChannelMask parameter; CChannelMask is a handy way to
+   group pipe indices.
+
+
+
+   Digital mode switch
+   ===================
+
+   Some cards (right now, Gina24, Layla24, and Mona) have a Digital Mode Switch
+   or DMS.  Cards with a DMS can be set to one of three mutually exclusive
+   digital modes: S/PDIF RCA, S/PDIF optical, or ADAT optical.
+
+   This may create some confusion since ADAT optical is 8 channels wide and
+   S/PDIF is only two channels wide.  Gina24, Layla24, and Mona handle this
+   by acting as if they always have 8 digital outs and ins.  If you are in
+   either S/PDIF mode, the last 6 channels don't do anything - data sent
+   out these channels is thrown away and you will always record zeros.
+
+   Note that with Gina24, Layla24, and Mona, sample rates above 50 kHz are
+   only available if you have the card configured for S/PDIF optical or S/PDIF
+   RCA.
+
+
+
+   Double speed mode
+   =================
+
+   Some of the cards support 88.2 kHz and 96 kHz sampling (Darla24, Gina24,
+   Layla24, Mona, Mia, and Indigo).  For these cards, the driver sometimes has
+   to worry about "double speed mode"; double speed mode applies whenever the
+   sampling rate is above 50 kHz.
+
+   For instance, Mona and Layla24 support word clock sync.  However, they
+   actually support two different word clock modes - single speed (below
+   50 kHz) and double speed (above 50 kHz).  The hardware detects if a single
+   or double speed word clock signal is present; the generic code uses that
+   information to determine which mode to use.
+
+   The generic code takes care of all this for you.
+*/
+
+
+#ifndef _ECHOAUDIO_H_
+#define _ECHOAUDIO_H_
+
+
+#define TRUE 1
+#define FALSE 0
+
+#include "echoaudio_dsp.h"
+
+
+
+/***********************************************************************
+
+	PCI configuration space
+
+***********************************************************************/
+
+/*
+ * PCI vendor ID and device IDs for the hardware
+ */
+#define VENDOR_ID		0x1057
+#define DEVICE_ID_56301		0x1801
+#define DEVICE_ID_56361		0x3410
+#define SUBVENDOR_ID		0xECC0
+
+
+/*
+ * Valid Echo PCI subsystem card IDs
+ */
+#define DARLA20			0x0010
+#define GINA20			0x0020
+#define LAYLA20			0x0030
+#define DARLA24			0x0040
+#define GINA24			0x0050
+#define LAYLA24			0x0060
+#define MONA			0x0070
+#define MIA			0x0080
+#define INDIGO			0x0090
+#define INDIGO_IO		0x00a0
+#define INDIGO_DJ		0x00b0
+#define ECHO3G			0x0100
+
+
+/************************************************************************
+
+	Array sizes and so forth
+
+***********************************************************************/
+
+/*
+ * Sizes
+ */
+#define ECHO_MAXAUDIOINPUTS	32	/* Max audio input channels */
+#define ECHO_MAXAUDIOOUTPUTS	32	/* Max audio output channels */
+#define ECHO_MAXAUDIOPIPES	32	/* Max number of input and output
+					 * pipes */
+#define E3G_MAX_OUTPUTS		16
+#define ECHO_MAXMIDIJACKS	1	/* Max MIDI ports */
+#define ECHO_MIDI_QUEUE_SZ 	512	/* Max MIDI input queue entries */
+#define ECHO_MTC_QUEUE_SZ	32	/* Max MIDI time code input queue
+					 * entries */
+
+/*
+ * MIDI activity indicator timeout
+ */
+#define MIDI_ACTIVITY_TIMEOUT_USEC	200000
+
+
+/****************************************************************************
+ 
+   Clocks
+
+*****************************************************************************/
+
+/*
+ * Clock numbers
+ */
+#define ECHO_CLOCK_INTERNAL		0
+#define ECHO_CLOCK_WORD			1
+#define ECHO_CLOCK_SUPER		2
+#define ECHO_CLOCK_SPDIF		3
+#define ECHO_CLOCK_ADAT			4
+#define ECHO_CLOCK_ESYNC		5
+#define ECHO_CLOCK_ESYNC96		6
+#define ECHO_CLOCK_MTC			7
+#define ECHO_CLOCK_NUMBER		8
+#define ECHO_CLOCKS			0xffff
+
+/*
+ * Clock bit numbers - used to report capabilities and whatever clocks
+ * are being detected dynamically.
+ */
+#define ECHO_CLOCK_BIT_INTERNAL		(1 << ECHO_CLOCK_INTERNAL)
+#define ECHO_CLOCK_BIT_WORD		(1 << ECHO_CLOCK_WORD)
+#define ECHO_CLOCK_BIT_SUPER		(1 << ECHO_CLOCK_SUPER)
+#define ECHO_CLOCK_BIT_SPDIF		(1 << ECHO_CLOCK_SPDIF)
+#define ECHO_CLOCK_BIT_ADAT		(1 << ECHO_CLOCK_ADAT)
+#define ECHO_CLOCK_BIT_ESYNC		(1 << ECHO_CLOCK_ESYNC)
+#define ECHO_CLOCK_BIT_ESYNC96		(1 << ECHO_CLOCK_ESYNC96)
+#define ECHO_CLOCK_BIT_MTC		(1<<ECHO_CLOCK_MTC)
+
+
+/***************************************************************************
+
+   Digital modes
+
+****************************************************************************/
+
+/*
+ * Digital modes for Mona, Layla24, and Gina24
+ */
+#define DIGITAL_MODE_NONE			0xFF
+#define DIGITAL_MODE_SPDIF_RCA			0
+#define DIGITAL_MODE_SPDIF_OPTICAL		1
+#define DIGITAL_MODE_ADAT			2
+#define DIGITAL_MODE_SPDIF_CDROM		3
+#define DIGITAL_MODES				4
+
+/*
+ * Digital mode capability masks
+ */
+#define ECHOCAPS_HAS_DIGITAL_MODE_SPDIF_RCA	(1 << DIGITAL_MODE_SPDIF_RCA)
+#define ECHOCAPS_HAS_DIGITAL_MODE_SPDIF_OPTICAL	(1 << DIGITAL_MODE_SPDIF_OPTICAL)
+#define ECHOCAPS_HAS_DIGITAL_MODE_ADAT		(1 << DIGITAL_MODE_ADAT)
+#define ECHOCAPS_HAS_DIGITAL_MODE_SPDIF_CDROM	(1 << DIGITAL_MODE_SPDIF_CDROM)
+
+
+#define EXT_3GBOX_NC			0x01	/* 3G box not connected */
+#define EXT_3GBOX_NOT_SET		0x02	/* 3G box not detected yet */
+
+
+#define ECHOGAIN_MUTED		(-128)	/* Minimum possible gain */
+#define ECHOGAIN_MINOUT		(-128)	/* Min output gain (dB) */
+#define ECHOGAIN_MAXOUT		(6)	/* Max output gain (dB) */
+#define ECHOGAIN_MININP		(-50)	/* Min input gain (0.5 dB) */
+#define ECHOGAIN_MAXINP		(50)	/* Max input gain (0.5 dB) */
+
+#define PIPE_STATE_STOPPED	0	/* Pipe has been reset */
+#define PIPE_STATE_PAUSED	1	/* Pipe has been stopped */
+#define PIPE_STATE_STARTED	2	/* Pipe has been started */
+#define PIPE_STATE_PENDING	3	/* Pipe has pending start */
+
+
+/* Debug initialization */
+#ifdef CONFIG_SND_DEBUG
+#define DE_INIT(x) snd_printk x
+#else
+#define DE_INIT(x)
+#endif
+
+/* Debug hw_params callbacks */
+#ifdef CONFIG_SND_DEBUG
+#define DE_HWP(x) snd_printk x
+#else
+#define DE_HWP(x)
+#endif
+
+/* Debug normal activity (open, start, stop...) */
+#ifdef CONFIG_SND_DEBUG
+#define DE_ACT(x) snd_printk x
+#else
+#define DE_ACT(x)
+#endif
+
+/* Debug midi activity */
+#ifdef CONFIG_SND_DEBUG
+#define DE_MID(x) snd_printk x
+#else
+#define DE_MID(x)
+#endif
+
+
+struct audiopipe {
+	volatile u32 *dma_counter;	/* Commpage register that contains
+					 * the current dma position
+					 * (lower 32 bits only)
+					 */
+	u32 last_counter;		/* The last position, which is used
+					 * to compute...
+					 */
+	u32 position;			/* ...the number of bytes tranferred
+					 * by the DMA engine, modulo the
+					 * buffer size
+					 */
+	short index;			/* Index of the first channel or <0
+					 * if hw is not configured yet
+					 */
+	short interleave;
+	struct snd_dma_buffer sgpage;	/* Room for the scatter-gather list */
+	struct snd_pcm_hardware hw;
+	struct snd_pcm_hw_constraint_list constr;
+	short sglist_head;
+	char state;			/* pipe state */
+};
+
+
+struct audioformat {
+	u8 interleave;			/* How the data is arranged in memory:
+					 * mono = 1, stereo = 2, ...
+					 */
+	u8 bits_per_sample;		/* 8, 16, 24, 32 (24 bits left aligned) */
+	char mono_to_stereo;		/* Only used if interleave is 1 and
+					 * if this is an output pipe.
+					 */
+	char data_are_bigendian;	/* 1 = big endian, 0 = little endian */
+};
+
+
+struct echoaudio {
+	spinlock_t lock;
+	struct snd_pcm_substream *substream[DSP_MAXPIPES];
+	int last_period[DSP_MAXPIPES];
+	struct semaphore mode_mutex;
+	u16 num_digital_modes, digital_mode_list[6];
+	u16 num_clock_sources, clock_source_list[10];
+	atomic_t opencount;
+	struct snd_kcontrol *clock_src_ctl;
+	struct snd_pcm *analog_pcm, *digital_pcm;
+	struct snd_card *card;
+	const char *card_name;
+	struct pci_dev *pci;
+	unsigned long dsp_registers_phys;
+	struct resource *iores;
+	struct snd_dma_buffer commpage_dma_buf;
+	int irq;
+#ifdef ECHOCARD_HAS_MIDI
+	struct snd_rawmidi *rmidi;
+	struct snd_rawmidi_substream *midi_in, *midi_out;
+#endif
+	struct timer_list timer;
+	char tinuse;				/* Timer in use */
+	char midi_full;				/* MIDI output buffer is full */
+	char can_set_rate;
+	char rate_set;
+
+	/* This stuff is used mainly by the lowlevel code */
+	struct comm_page *comm_page;	/* Virtual address of the memory
+					 * seen by DSP
+					 */
+	u32 pipe_alloc_mask;		/* Bitmask of allocated pipes */
+	u32 pipe_cyclic_mask;		/* Bitmask of pipes with cyclic
+					 * buffers
+					 */
+	u32 sample_rate;		/* Card sample rate in Hz */
+	u8 digital_mode;		/* Current digital mode
+					 * (see DIGITAL_MODE_*)
+					 */
+	u8 spdif_status;		/* Gina20, Darla20, Darla24 - only */
+	u8 clock_state;			/* Gina20, Darla20, Darla24 - only */
+	u8 input_clock;			/* Currently selected sample clock
+					 * source
+					 */
+	u8 output_clock;		/* Layla20 only */
+	char meters_enabled;		/* VU-meters status */
+	char asic_loaded;		/* Set TRUE when ASIC loaded */
+	char bad_board;			/* Set TRUE if DSP won't load */
+	char professional_spdif;	/* 0 = consumer; 1 = professional */
+	char non_audio_spdif;		/* 3G - only */
+	char digital_in_automute;	/* Gina24, Layla24, Mona - only */
+	char has_phantom_power;
+	char hasnt_input_nominal_level;	/* Gina3G */
+	char phantom_power;		/* Gina3G - only */
+	char has_midi;
+	char midi_input_enabled;
+
+#ifdef ECHOCARD_ECHO3G
+	/* External module -dependent pipe and bus indexes */
+	char px_digital_out, px_analog_in, px_digital_in, px_num;
+	char bx_digital_out, bx_analog_in, bx_digital_in, bx_num;
+#endif
+
+	char nominal_level[ECHO_MAXAUDIOPIPES];	/* True == -10dBV
+						 * False == +4dBu */
+	s8 input_gain[ECHO_MAXAUDIOINPUTS];	/* Input level -50..+50
+						 * unit is 0.5dB */
+	s8 output_gain[ECHO_MAXAUDIOOUTPUTS];	/* Output level -128..+6 dB
+						 * (-128=muted) */
+	s8 monitor_gain[ECHO_MAXAUDIOOUTPUTS][ECHO_MAXAUDIOINPUTS];
+		/* -128..+6 dB */
+	s8 vmixer_gain[ECHO_MAXAUDIOOUTPUTS][ECHO_MAXAUDIOOUTPUTS];
+		/* -128..+6 dB */
+
+	u16 digital_modes;		/* Bitmask of supported modes
+					 * (see ECHOCAPS_HAS_DIGITAL_MODE_*) */
+	u16 input_clock_types;		/* Suppoted input clock types */
+	u16 output_clock_types;		/* Suppoted output clock types -
+					 * Layla20 only */
+	u16 device_id, subdevice_id;
+	u16 *dsp_code;			/* Current DSP code loaded,
+					 * NULL if nothing loaded */
+	const struct firmware *dsp_code_to_load;/* DSP code to load */
+	const struct firmware *asic_code;	/* Current ASIC code */
+	u32 comm_page_phys;			/* Physical address of the
+						 * memory seen by DSP */
+	volatile u32 __iomem *dsp_registers;	/* DSP's register base */
+	u32 active_mask;			/* Chs. active mask or
+						 * punks out */
+
+#ifdef ECHOCARD_HAS_MIDI
+	u16 mtc_state;				/* State for MIDI input parsing state machine */
+	u8 midi_buffer[MIDI_IN_BUFFER_SIZE];
+#endif
+};
+
+
+static int init_dsp_comm_page(struct echoaudio *chip);
+static int init_line_levels(struct echoaudio *chip);
+static int free_pipes(struct echoaudio *chip, struct audiopipe *pipe);
+static int load_firmware(struct echoaudio *chip);
+static int wait_handshake(struct echoaudio *chip);
+static int send_vector(struct echoaudio *chip, u32 command);
+static int get_firmware(const struct firmware **fw_entry,
+			const struct firmware *frm, struct echoaudio *chip);
+static void free_firmware(const struct firmware *fw_entry);
+
+#ifdef ECHOCARD_HAS_MIDI
+static int enable_midi_input(struct echoaudio *chip, char enable);
+static int midi_service_irq(struct echoaudio *chip);
+static int __devinit snd_echo_midi_create(struct snd_card *card,
+					  struct echoaudio *chip);
+#endif
+
+
+static inline void clear_handshake(struct echoaudio *chip)
+{
+	chip->comm_page->handshake = 0;
+}
+
+static inline u32 get_dsp_register(struct echoaudio *chip, u32 index)
+{
+	return readl(&chip->dsp_registers[index]);
+}
+
+static inline void set_dsp_register(struct echoaudio *chip, u32 index,
+				    u32 value)
+{
+	writel(value, &chip->dsp_registers[index]);
+}
+
+
+/* Pipe and bus indexes. PX_* and BX_* are defined as chip->px_* and chip->bx_*
+for 3G cards because they depend on the external box. They are integer
+constants for all other cards.
+Never use those defines directly, use the following functions instead. */
+
+static inline int px_digital_out(const struct echoaudio *chip)
+{
+	return PX_DIGITAL_OUT;
+}
+
+static inline int px_analog_in(const struct echoaudio *chip)
+{
+	return PX_ANALOG_IN;
+}
+
+static inline int px_digital_in(const struct echoaudio *chip)
+{
+	return PX_DIGITAL_IN;
+}
+
+static inline int px_num(const struct echoaudio *chip)
+{
+	return PX_NUM;
+}
+
+static inline int bx_digital_out(const struct echoaudio *chip)
+{
+	return BX_DIGITAL_OUT;
+}
+
+static inline int bx_analog_in(const struct echoaudio *chip)
+{
+	return BX_ANALOG_IN;
+}
+
+static inline int bx_digital_in(const struct echoaudio *chip)
+{
+	return BX_DIGITAL_IN;
+}
+
+static inline int bx_num(const struct echoaudio *chip)
+{
+	return BX_NUM;
+}
+
+static inline int num_pipes_out(const struct echoaudio *chip)
+{
+	return px_analog_in(chip);
+}
+
+static inline int num_pipes_in(const struct echoaudio *chip)
+{
+	return px_num(chip) - px_analog_in(chip);
+}
+
+static inline int num_busses_out(const struct echoaudio *chip)
+{
+	return bx_analog_in(chip);
+}
+
+static inline int num_busses_in(const struct echoaudio *chip)
+{
+	return bx_num(chip) - bx_analog_in(chip);
+}
+
+static inline int num_analog_busses_out(const struct echoaudio *chip)
+{
+	return bx_digital_out(chip);
+}
+
+static inline int num_analog_busses_in(const struct echoaudio *chip)
+{
+	return bx_digital_in(chip) - bx_analog_in(chip);
+}
+
+static inline int num_digital_busses_out(const struct echoaudio *chip)
+{
+	return num_busses_out(chip) - num_analog_busses_out(chip);
+}
+
+static inline int num_digital_busses_in(const struct echoaudio *chip)
+{
+	return num_busses_in(chip) - num_analog_busses_in(chip);
+}
+
+/* The monitor array is a one-dimensional array; compute the offset
+ * into the array */
+static inline int monitor_index(const struct echoaudio *chip, int out, int in)
+{
+	return out * num_busses_in(chip) + in;
+}
+
+
+#ifndef pci_device
+#define pci_device(chip) (&chip->pci->dev)
+#endif
+
+
+#endif /* _ECHOAUDIO_H_ */

sound/pci/echoaudio/echoaudio_3g.c

+/****************************************************************************
+
+   Copyright Echo Digital Audio Corporation (c) 1998 - 2004
+   All rights reserved
+   www.echoaudio.com
+
+   This file is part of Echo Digital Audio's generic driver library.
+
+   Echo Digital Audio's generic driver library 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.
+
+   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.
+
+   *************************************************************************
+
+ Translation from C++ and adaptation for use in ALSA-Driver
+ were made by Giuliano Pochini <pochini@shiny.it>
+
+****************************************************************************/
+
+
+
+/* These functions are common for all "3G" cards */
+
+
+static int check_asic_status(struct echoaudio *chip)
+{
+	u32 box_status;
+
+	if (wait_handshake(chip))
+		return -EIO;
+
+	chip->comm_page->ext_box_status =
+		__constant_cpu_to_le32(E3G_ASIC_NOT_LOADED);
+	chip->asic_loaded = FALSE;
+	clear_handshake(chip);
+	send_vector(chip, DSP_VC_TEST_ASIC);
+
+	if (wait_handshake(chip)) {
+		chip->dsp_code = NULL;
+		return -EIO;
+	}
+
+	box_status = le32_to_cpu(chip->comm_page->ext_box_status);
+	DE_INIT(("box_status=%x\n", box_status));
+	if (box_status == E3G_ASIC_NOT_LOADED)
+		return -ENODEV;
+
+	chip->asic_loaded = TRUE;
+	return box_status & E3G_BOX_TYPE_MASK;
+}
+
+
+
+static inline u32 get_frq_reg(struct echoaudio *chip)
+{
+	return le32_to_cpu(chip->comm_page->e3g_frq_register);
+}
+
+
+
+/* Most configuration of 3G cards is accomplished by writing the control
+register. write_control_reg sends the new control register value to the DSP. */
+static int write_control_reg(struct echoaudio *chip, u32 ctl, u32 frq,
+			     char force)
+{
+	if (wait_handshake(chip))
+		return -EIO;
+
+	DE_ACT(("WriteControlReg: Setting 0x%x, 0x%x\n", ctl, frq));
+
+	ctl = cpu_to_le32(ctl);
+	frq = cpu_to_le32(frq);
+
+	if (ctl != chip->comm_page->control_register ||
+	    frq != chip->comm_page->e3g_frq_register || force) {
+		chip->comm_page->e3g_frq_register = frq;
+		chip->comm_page->control_register = ctl;
+		clear_handshake(chip);
+		return send_vector(chip, DSP_VC_WRITE_CONTROL_REG);
+	}
+
+	DE_ACT(("WriteControlReg: not written, no change\n"));
+	return 0;
+}
+
+
+
+/* Set the digital mode - currently for Gina24, Layla24, Mona, 3G */
+static int set_digital_mode(struct echoaudio *chip, u8 mode)
+{
+	u8 previous_mode;
+	int err, i, o;
+
+	/* All audio channels must be closed before changing the digital mode */
+	snd_assert(!chip->pipe_alloc_mask, return -EAGAIN);
+
+	snd_assert(chip->digital_modes & (1 << mode), return -EINVAL);
+
+	previous_mode = chip->digital_mode;
+	err = dsp_set_digital_mode(chip, mode);
+
+	/* If we successfully changed the digital mode from or to ADAT,
+	 * then make sure all output, input and monitor levels are
+	 * updated by the DSP comm object. */
+	if (err >= 0 && previous_mode != mode &&
+	    (previous_mode == DIGITAL_MODE_ADAT || mode == DIGITAL_MODE_ADAT)) {
+		spin_lock_irq(&chip->lock);
+		for (o = 0; o < num_busses_out(chip); o++)
+			for (i = 0; i < num_busses_in(chip); i++)
+				set_monitor_gain(chip, o, i,
+						 chip->monitor_gain[o][i]);
+
+#ifdef ECHOCARD_HAS_INPUT_GAIN
+		for (i = 0; i < num_busses_in(chip); i++)
+			set_input_gain(chip, i, chip->input_gain[i]);
+		update_input_line_level(chip);
+#endif
+
+		for (o = 0; o < num_busses_out(chip); o++)
+			set_output_gain(chip, o, chip->output_gain[o]);
+		update_output_line_level(chip);
+		spin_unlock_irq(&chip->lock);
+	}
+
+	return err;
+}
+
+
+
+static u32 set_spdif_bits(struct echoaudio *chip, u32 control_reg, u32 rate)
+{
+	control_reg &= E3G_SPDIF_FORMAT_CLEAR_MASK;
+
+	switch (rate) {
+	case 32000 :
+		control_reg |= E3G_SPDIF_SAMPLE_RATE0 | E3G_SPDIF_SAMPLE_RATE1;
+		break;
+	case 44100 :
+		if (chip->professional_spdif)
+			control_reg |= E3G_SPDIF_SAMPLE_RATE0;
+		break;
+	case 48000 :
+		control_reg |= E3G_SPDIF_SAMPLE_RATE1;
+		break;
+	}
+
+	if (chip->professional_spdif)
+		control_reg |= E3G_SPDIF_PRO_MODE;
+
+	if (chip->non_audio_spdif)
+		control_reg |= E3G_SPDIF_NOT_AUDIO;
+
+	control_reg |= E3G_SPDIF_24_BIT | E3G_SPDIF_TWO_CHANNEL |
+		E3G_SPDIF_COPY_PERMIT;
+
+	return control_reg;
+}
+
+
+
+/* Set the S/PDIF output format */
+static int set_professional_spdif(struct echoaudio *chip, char prof)
+{
+	u32 control_reg;
+
+	control_reg = le32_to_cpu(chip->comm_page->control_register);
+	chip->professional_spdif = prof;
+	control_reg = set_spdif_bits(chip, control_reg, chip->sample_rate);
+	return write_control_reg(chip, control_reg, get_frq_reg(chip), 0);
+}
+
+
+
+/* detect_input_clocks() returns a bitmask consisting of all the input clocks
+currently connected to the hardware; this changes as the user connects and
+disconnects clock inputs. You should use this information to determine which
+clocks the user is allowed to select. */
+static u32 detect_input_clocks(const struct echoaudio *chip)
+{
+	u32 clocks_from_dsp, clock_bits;
+
+	/* Map the DSP clock detect bits to the generic driver clock
+	 * detect bits */
+	clocks_from_dsp = le32_to_cpu(chip->comm_page->status_clocks);
+
+	clock_bits = ECHO_CLOCK_BIT_INTERNAL;
+
+	if (clocks_from_dsp & E3G_CLOCK_DETECT_BIT_WORD)
+		clock_bits |= ECHO_CLOCK_BIT_WORD;
+
+	switch(chip->digital_mode) {
+	case DIGITAL_MODE_SPDIF_RCA:
+	case DIGITAL_MODE_SPDIF_OPTICAL:
+		if (clocks_from_dsp & E3G_CLOCK_DETECT_BIT_SPDIF)
+			clock_bits |= ECHO_CLOCK_BIT_SPDIF;
+		break;
+	case DIGITAL_MODE_ADAT:
+		if (clocks_from_dsp & E3G_CLOCK_DETECT_BIT_ADAT)
+			clock_bits |= ECHO_CLOCK_BIT_ADAT;
+		break;
+	}
+
+	return clock_bits;
+}
+
+
+
+static int load_asic(struct echoaudio *chip)
+{
+	int box_type, err;
+
+	if (chip->asic_loaded)
+		return 0;
+
+	/* Give the DSP a few milliseconds to settle down */
+	mdelay(2);
+
+	err = load_asic_generic(chip, DSP_FNC_LOAD_3G_ASIC,
+				&card_fw[FW_3G_ASIC]);
+	if (err < 0)
+		return err;
+
+	chip->asic_code = &card_fw[FW_3G_ASIC];
+
+	/* Now give the new ASIC a little time to set up */
+	mdelay(2);
+	/* See if it worked */
+	box_type = check_asic_status(chip);
+
+	/* Set up the control register if the load succeeded -
+	 * 48 kHz, internal clock, S/PDIF RCA mode */
+	if (box_type >= 0) {
+		err = write_control_reg(chip, E3G_48KHZ,
+					E3G_FREQ_REG_DEFAULT, TRUE);
+		if (err < 0)
+			return err;
+	}
+
+	return box_type;
+}
+
+
+
+static int set_sample_rate(struct echoaudio *chip, u32 rate)
+{
+	u32 control_reg, clock, base_rate, frq_reg;
+
+	/* Only set the clock for internal mode. */
+	if (chip->input_clock != ECHO_CLOCK_INTERNAL) {
+		DE_ACT(("set_sample_rate: Cannot set sample rate - "
+			"clock not set to CLK_CLOCKININTERNAL\n"));
+		/* Save the rate anyhow */
+		chip->comm_page->sample_rate = cpu_to_le32(rate);
+		chip->sample_rate = rate;
+		set_input_clock(chip, chip->input_clock);
+		return 0;
+	}
+
+	snd_assert(rate < 50000 || chip->digital_mode != DIGITAL_MODE_ADAT,
+		   return -EINVAL);
+
+	clock = 0;
+	control_reg = le32_to_cpu(chip->comm_page->control_register);
+	control_reg &= E3G_CLOCK_CLEAR_MASK;
+
+	switch (rate) {
+	case 96000:
+		clock = E3G_96KHZ;
+		break;
+	case 88200:
+		clock = E3G_88KHZ;
+		break;
+	case 48000:
+		clock = E3G_48KHZ;
+		break;
+	case 44100:
+		clock = E3G_44KHZ;
+		break;
+	case 32000:
+		clock = E3G_32KHZ;
+		break;
+	default:
+		clock = E3G_CONTINUOUS_CLOCK;
+		if (rate > 50000)
+			clock |= E3G_DOUBLE_SPEED_MODE;
+		break;
+	}
+
+	control_reg |= clock;
+	control_reg = set_spdif_bits(chip, control_reg, rate);
+
+	base_rate = rate;
+	if (base_rate > 50000)
+		base_rate /= 2;
+	if (base_rate < 32000)
+		base_rate = 32000;
+
+	frq_reg = E3G_MAGIC_NUMBER / base_rate - 2;
+	if (frq_reg > E3G_FREQ_REG_MAX)
+		frq_reg = E3G_FREQ_REG_MAX;
+
+	chip->comm_page->sample_rate = cpu_to_le32(rate);	/* ignored by the DSP */
+	chip->sample_rate = rate;
+	DE_ACT(("SetSampleRate: %d clock %x\n", rate, control_reg));
+
+	/* Tell the DSP about it - DSP reads both control reg & freq reg */
+	return write_control_reg(chip, control_reg, frq_reg, 0);
+}
+
+
+
+/* Set the sample clock source to internal, S/PDIF, ADAT */
+static int set_input_clock(struct echoaudio *chip, u16 clock)
+{
+	u32 control_reg, clocks_from_dsp;
+
+	DE_ACT(("set_input_clock:\n"));
+
+	/* Mask off the clock select bits */
+	control_reg = le32_to_cpu(chip->comm_page->control_register) &
+		E3G_CLOCK_CLEAR_MASK;
+	clocks_from_dsp = le32_to_cpu(chip->comm_page->status_clocks);
+
+	switch (clock) {
+	case ECHO_CLOCK_INTERNAL:
+		DE_ACT(("Set Echo3G clock to INTERNAL\n"));
+		chip->input_clock = ECHO_CLOCK_INTERNAL;
+		return set_sample_rate(chip, chip->sample_rate);
+	case ECHO_CLOCK_SPDIF:
+		if (chip->digital_mode == DIGITAL_MODE_ADAT)
+			return -EAGAIN;
+		DE_ACT(("Set Echo3G clock to SPDIF\n"));
+		control_reg |= E3G_SPDIF_CLOCK;
+		if (clocks_from_dsp & E3G_CLOCK_DETECT_BIT_SPDIF96)
+			control_reg |= E3G_DOUBLE_SPEED_MODE;
+		else
+			control_reg &= ~E3G_DOUBLE_SPEED_MODE;
+		break;
+	case ECHO_CLOCK_ADAT:
+		if (chip->digital_mode != DIGITAL_MODE_ADAT)
+			return -EAGAIN;
+		DE_ACT(("Set Echo3G clock to ADAT\n"));
+		control_reg |= E3G_ADAT_CLOCK;
+		control_reg &= ~E3G_DOUBLE_SPEED_MODE;
+		break;
+	case ECHO_CLOCK_WORD:
+		DE_ACT(("Set Echo3G clock to WORD\n"));
+		control_reg |= E3G_WORD_CLOCK;
+		if (clocks_from_dsp & E3G_CLOCK_DETECT_BIT_WORD96)
+			control_reg |= E3G_DOUBLE_SPEED_MODE;
+		else
+			control_reg &= ~E3G_DOUBLE_SPEED_MODE;
+		break;
+	default:
+		DE_ACT(("Input clock 0x%x not supported for Echo3G\n", clock));
+		return -EINVAL;
+	}
+
+	chip->input_clock = clock;
+	return write_control_reg(chip, control_reg, get_frq_reg(chip), 1);
+}
+
+
+
+static int dsp_set_digital_mode(struct echoaudio *chip, u8 mode)
+{
+	u32 control_reg;
+	int err, incompatible_clock;
+
+	/* Set clock to "internal" if it's not compatible with the new mode */
+	incompatible_clock = FALSE;
+	switch (mode) {
+	case DIGITAL_MODE_SPDIF_OPTICAL:
+	case DIGITAL_MODE_SPDIF_RCA:
+		if (chip->input_clock == ECHO_CLOCK_ADAT)
+			incompatible_clock = TRUE;
+		break;
+	case DIGITAL_MODE_ADAT:
+		if (chip->input_clock == ECHO_CLOCK_SPDIF)
+			incompatible_clock = TRUE;
+		break;
+	default:
+		DE_ACT(("Digital mode not supported: %d\n", mode));
+		return -EINVAL;
+	}
+
+	spin_lock_irq(&chip->lock);
+
+	if (incompatible_clock) {
+		chip->sample_rate = 48000;
+		set_input_clock(chip, ECHO_CLOCK_INTERNAL);
+	}
+
+	/* Clear the current digital mode */
+	control_reg = le32_to_cpu(chip->comm_page->control_register);
+	control_reg &= E3G_DIGITAL_MODE_CLEAR_MASK;
+
+	/* Tweak the control reg */
+	switch (mode) {
+	case DIGITAL_MODE_SPDIF_OPTICAL:
+		control_reg |= E3G_SPDIF_OPTICAL_MODE;
+		break;
+	case DIGITAL_MODE_SPDIF_RCA:
+		/* E3G_SPDIF_OPTICAL_MODE bit cleared */
+		break;
+	case DIGITAL_MODE_ADAT:
+		control_reg |= E3G_ADAT_MODE;
+		control_reg &= ~E3G_DOUBLE_SPEED_MODE;	/* @@ useless */
+		break;
+	}
+
+	err = write_control_reg(chip, control_reg, get_frq_reg(chip), 1);
+	spin_unlock_irq(&chip->lock);
+	if (err < 0)
+		return err;
+	chip->digital_mode = mode;
+
+	DE_ACT(("set_digital_mode(%d)\n", chip->digital_mode));
+	return incompatible_clock;
+}