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
32 static int set_vmixer_gain(struct echoaudio *chip, u16 output, u16 pipe,
33 int gain);
34 static int update_vmixer_level(struct echoaudio *chip);
35
36
37 static 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 err = init_dsp_comm_page(chip);
45 if (err) {
46 dev_err(chip->card->dev,
47 "init_hw - could not initialize DSP comm page\n");
48 return err;
49 }
50
51 chip->device_id = device_id;
52 chip->subdevice_id = subdevice_id;
53 chip->bad_board = true;
54 chip->dsp_code_to_load = FW_INDIGO_IO_DSP;
55 /* Since this card has no ASIC, mark it as loaded so everything
56 works OK */
57 chip->asic_loaded = true;
58 chip->input_clock_types = ECHO_CLOCK_BIT_INTERNAL;
59
60 err = load_firmware(chip);
61 if (err < 0)
62 return err;
63 chip->bad_board = false;
64
65 return err;
66 }
67
68
69
70 static int set_mixer_defaults(struct echoaudio *chip)
71 {
72 return init_line_levels(chip);
73 }
74
75
76
77 static u32 detect_input_clocks(const struct echoaudio *chip)
78 {
79 return ECHO_CLOCK_BIT_INTERNAL;
80 }
81
82
83
84 /* The IndigoIO has no ASIC. Just do nothing */
85 static int load_asic(struct echoaudio *chip)
86 {
87 return 0;
88 }
89
90
91
92 static int set_sample_rate(struct echoaudio *chip, u32 rate)
93 {
94 if (wait_handshake(chip))
95 return -EIO;
96
97 chip->sample_rate = rate;
98 chip->comm_page->sample_rate = cpu_to_le32(rate);
99 clear_handshake(chip);
100 return send_vector(chip, DSP_VC_UPDATE_CLOCKS);
101 }
102
103
104
105 /* This function routes the sound from a virtual channel to a real output */
106 static int set_vmixer_gain(struct echoaudio *chip, u16 output, u16 pipe,
107 int gain)
108 {
109 int index;
110
111 if (snd_BUG_ON(pipe >= num_pipes_out(chip) ||
112 output >= num_busses_out(chip)))
113 return -EINVAL;
114
115 if (wait_handshake(chip))
116 return -EIO;
117
118 chip->vmixer_gain[output][pipe] = gain;
119 index = output * num_pipes_out(chip) + pipe;
120 chip->comm_page->vmixer[index] = gain;
121
122 dev_dbg(chip->card->dev,
123 "set_vmixer_gain: pipe %d, out %d = %d\n", pipe, output, gain);
124 return 0;
125 }
126
127
128
129 /* Tell the DSP to read and update virtual mixer levels in comm page. */
130 static int update_vmixer_level(struct echoaudio *chip)
131 {
132 if (wait_handshake(chip))
133 return -EIO;
134 clear_handshake(chip);
135 return send_vector(chip, DSP_VC_SET_VMIXER_GAIN);
136 }
137
138
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