ALSA: Echoaudio: add support for Indigo express cards

This patch adds support for IndigoIOx and IndigoDJx.

Signed-off-by: Giuliano Pochini <pochini@shiny.it>
Signed-off-by: Takashi Iwai <tiwai@suse.de>

sound/pci/echoaudio/indigodjx_dsp.c

@@ -0,0 +1,68 @@
+/************************************************************************
+
+This file is part of Echo Digital Audio's generic driver library.
+Copyright Echo Digital Audio Corporation (c) 1998 - 2005
+All rights reserved
+www.echoaudio.com
+
+This library is free software; you can redistribute it and/or
+modify it under the terms of the GNU Lesser General Public
+License as published by the Free Software Foundation; either
+version 2.1 of the License, or (at your option) any later version.
+
+This library 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
+Lesser General Public License for more details.
+
+You should have received a copy of the GNU Lesser General Public
+License along with this library; 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 update_vmixer_level(struct echoaudio *chip);
+static int set_vmixer_gain(struct echoaudio *chip, u16 output,
+			   u16 pipe, int gain);
+
+
+static int init_hw(struct echoaudio *chip, u16 device_id, u16 subdevice_id)
+{
+	int err;
+
+	DE_INIT(("init_hw() - Indigo DJx\n"));
+	if (snd_BUG_ON((subdevice_id & 0xfff0) != INDIGO_DJX))
+		return -ENODEV;
+
+	err = init_dsp_comm_page(chip);
+	if (err < 0) {
+		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_INDIGO_DJX_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;
+
+	err = load_firmware(chip);
+	if (err < 0)
+		return err;
+	chip->bad_board = FALSE;
+
+	err = init_line_levels(chip);
+	if (err < 0)
+		return err;
+
+	DE_INIT(("init_hw done\n"));
+	return err;
+}