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 if (snd_BUG_ON((subdevice_id & 0xfff0) != INDIGO_IO))
43 return -ENODEV;
44
45 if ((err = init_dsp_comm_page(chip))) {
46 DE_INIT(("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 = &card_fw[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 if ((err = init_line_levels(chip)) < 0)
64 return err;
65
66 DE_INIT(("init_hw done\n"));
67 return err;
68 }
69
70
71
72 static u32 detect_input_clocks(const struct echoaudio *chip)
73 {
74 return ECHO_CLOCK_BIT_INTERNAL;
75 }
76
77
78
79 /* The IndigoIO has no ASIC. Just do nothing */
80 static int load_asic(struct echoaudio *chip)
81 {
82 return 0;
83 }
84
85
86
87 static int set_sample_rate(struct echoaudio *chip, u32 rate)
88 {
89 if (wait_handshake(chip))
90 return -EIO;
91
92 chip->sample_rate = rate;
93 chip->comm_page->sample_rate = cpu_to_le32(rate);
94 clear_handshake(chip);
95 return send_vector(chip, DSP_VC_UPDATE_CLOCKS);
96 }
97
98
99
100 /* This function routes the sound from a virtual channel to a real output */
101 static int set_vmixer_gain(struct echoaudio *chip, u16 output, u16 pipe,
102 int gain)
103 {
104 int index;
105
106 if (snd_BUG_ON(pipe >= num_pipes_out(chip) ||
107 output >= num_busses_out(chip)))
108 return -EINVAL;
109
110 if (wait_handshake(chip))
111 return -EIO;
112
113 chip->vmixer_gain[output][pipe] = gain;
114 index = output * num_pipes_out(chip) + pipe;
115 chip->comm_page->vmixer[index] = gain;
116
117 DE_ACT(("set_vmixer_gain: pipe %d, out %d = %d\n", pipe, output, gain));
118 return 0;
119 }
120
121
122
123 /* Tell the DSP to read and update virtual mixer levels in comm page. */
124 static int update_vmixer_level(struct echoaudio *chip)
125 {
126 if (wait_handshake(chip))
127 return -EIO;
128 clear_handshake(chip);
129 return send_vector(chip, DSP_VC_SET_VMIXER_GAIN);
130 }
131
132
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