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 DE_INIT(("init_hw() - Indigo IO\n"));
42 snd_assert((subdevice_id & 0xfff0) == INDIGO_IO, return -ENODEV);
43
44 if ((err = init_dsp_comm_page(chip))) {
45 DE_INIT(("init_hw - could not initialize DSP comm page\n"));
46 return err;
47 }
48
49 chip->device_id = device_id;
50 chip->subdevice_id = subdevice_id;
51 chip->bad_board = TRUE;
52 chip->dsp_code_to_load = &card_fw[FW_INDIGO_IO_DSP];
53 /* Since this card has no ASIC, mark it as loaded so everything
54 works OK */
55 chip->asic_loaded = TRUE;
56 chip->input_clock_types = ECHO_CLOCK_BIT_INTERNAL;
57
58 if ((err = load_firmware(chip)) < 0)
59 return err;
60 chip->bad_board = FALSE;
61
62 if ((err = init_line_levels(chip)) < 0)
63 return err;
64
65 /* Default routing of the virtual channels: all vchannels are routed
66 to the stereo output */
67 set_vmixer_gain(chip, 0, 0, 0);
68 set_vmixer_gain(chip, 1, 1, 0);
69 set_vmixer_gain(chip, 0, 2, 0);
70 set_vmixer_gain(chip, 1, 3, 0);
71 set_vmixer_gain(chip, 0, 4, 0);
72 set_vmixer_gain(chip, 1, 5, 0);
73 set_vmixer_gain(chip, 0, 6, 0);
74 set_vmixer_gain(chip, 1, 7, 0);
75 err = update_vmixer_level(chip);
76
77 DE_INIT(("init_hw done\n"));
78 return err;
79 }
80
81
82
83 static u32 detect_input_clocks(const struct echoaudio *chip)
84 {
85 return ECHO_CLOCK_BIT_INTERNAL;
86 }
87
88
89
90 /* The IndigoIO has no ASIC. Just do nothing */
91 static int load_asic(struct echoaudio *chip)
92 {
93 return 0;
94 }
95
96
97
98 static int set_sample_rate(struct echoaudio *chip, u32 rate)
99 {
100 if (wait_handshake(chip))
101 return -EIO;
102
103 chip->sample_rate = rate;
104 chip->comm_page->sample_rate = cpu_to_le32(rate);
105 clear_handshake(chip);
106 return send_vector(chip, DSP_VC_UPDATE_CLOCKS);
107 }
108
109
110
111 /* This function routes the sound from a virtual channel to a real output */
112 static int set_vmixer_gain(struct echoaudio *chip, u16 output, u16 pipe,
113 int gain)
114 {
115 int index;
116
117 snd_assert(pipe < num_pipes_out(chip) &&
118 output < num_busses_out(chip), return -EINVAL);
119
120 if (wait_handshake(chip))
121 return -EIO;
122
123 chip->vmixer_gain[output][pipe] = gain;
124 index = output * num_pipes_out(chip) + pipe;
125 chip->comm_page->vmixer[index] = gain;
126
127 DE_ACT(("set_vmixer_gain: pipe %d, out %d = %d\n", pipe, output, gain));
128 return 0;
129 }
130
131
132
133 /* Tell the DSP to read and update virtual mixer levels in comm page. */
134 static int update_vmixer_level(struct echoaudio *chip)
135 {
136 if (wait_handshake(chip))
137 return -EIO;
138 clear_handshake(chip);
139 return send_vector(chip, DSP_VC_SET_VMIXER_GAIN);
140 }
141
142
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