1/****************************************************************************
2
3   Copyright Echo Digital Audio Corporation (c) 1998 - 2004
4   All rights reserved
5   www.echoaudio.com
6
7   This file is part of Echo Digital Audio's generic driver library.
8
9   Echo Digital Audio's generic driver library is free software;
10   you can redistribute it and/or modify it under the terms of
11   the GNU General Public License as published by the Free Software
12   Foundation.
13
14   This program is distributed in the hope that it will be useful,
15   but WITHOUT ANY WARRANTY; without even the implied warranty of
16   MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
17   GNU General Public License for more details.
18
19   You should have received a copy of the GNU General Public License
20   along with this program; if not, write to the Free Software
21   Foundation, Inc., 59 Temple Place - Suite 330, Boston,
22   MA  02111-1307, USA.
23
24   *************************************************************************
25
26 Translation from C++ and adaptation for use in ALSA-Driver
27 were made by Giuliano Pochini <pochini@shiny.it>
28
29****************************************************************************/
30
31
32static int set_vmixer_gain(struct echoaudio *chip, u16 output, u16 pipe,
33			   int gain);
34static int update_vmixer_level(struct echoaudio *chip);
35
36
37static int init_hw(struct echoaudio *chip, u16 device_id, u16 subdevice_id)
38{
39	int err;
40
41	if (snd_BUG_ON((subdevice_id & 0xfff0) != INDIGO_IO))
42		return -ENODEV;
43
44	if ((err = init_dsp_comm_page(chip))) {
45		dev_err(chip->card->dev,
46			"init_hw - could not initialize DSP comm page\n");
47		return err;
48	}
49
50	chip->device_id = device_id;
51	chip->subdevice_id = subdevice_id;
52	chip->bad_board = true;
53	chip->dsp_code_to_load = FW_INDIGO_IO_DSP;
54	/* Since this card has no ASIC, mark it as loaded so everything
55	   works OK */
56	chip->asic_loaded = true;
57	chip->input_clock_types = ECHO_CLOCK_BIT_INTERNAL;
58
59	if ((err = load_firmware(chip)) < 0)
60		return err;
61	chip->bad_board = false;
62
63	return err;
64}
65
66
67
68static int set_mixer_defaults(struct echoaudio *chip)
69{
70	return init_line_levels(chip);
71}
72
73
74
75static u32 detect_input_clocks(const struct echoaudio *chip)
76{
77	return ECHO_CLOCK_BIT_INTERNAL;
78}
79
80
81
82/* The IndigoIO has no ASIC. Just do nothing */
83static int load_asic(struct echoaudio *chip)
84{
85	return 0;
86}
87
88
89
90static int set_sample_rate(struct echoaudio *chip, u32 rate)
91{
92	if (wait_handshake(chip))
93		return -EIO;
94
95	chip->sample_rate = rate;
96	chip->comm_page->sample_rate = cpu_to_le32(rate);
97	clear_handshake(chip);
98	return send_vector(chip, DSP_VC_UPDATE_CLOCKS);
99}
100
101
102
103/* This function routes the sound from a virtual channel to a real output */
104static int set_vmixer_gain(struct echoaudio *chip, u16 output, u16 pipe,
105			   int gain)
106{
107	int index;
108
109	if (snd_BUG_ON(pipe >= num_pipes_out(chip) ||
110		       output >= num_busses_out(chip)))
111		return -EINVAL;
112
113	if (wait_handshake(chip))
114		return -EIO;
115
116	chip->vmixer_gain[output][pipe] = gain;
117	index = output * num_pipes_out(chip) + pipe;
118	chip->comm_page->vmixer[index] = gain;
119
120	dev_dbg(chip->card->dev,
121		"set_vmixer_gain: pipe %d, out %d = %d\n", pipe, output, gain);
122	return 0;
123}
124
125
126
127/* Tell the DSP to read and update virtual mixer levels in comm page. */
128static int update_vmixer_level(struct echoaudio *chip)
129{
130	if (wait_handshake(chip))
131		return -EIO;
132	clear_handshake(chip);
133	return send_vector(chip, DSP_VC_SET_VMIXER_GAIN);
134}
135
136