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
init_hw(struct echoaudio * chip,u16 device_id,u16 subdevice_id)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 = 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 DE_INIT(("init_hw done\n"));
64 return err;
65 }
66
67
68
set_mixer_defaults(struct echoaudio * chip)69 static int set_mixer_defaults(struct echoaudio *chip)
70 {
71 return init_line_levels(chip);
72 }
73
74
75
detect_input_clocks(const struct echoaudio * chip)76 static u32 detect_input_clocks(const struct echoaudio *chip)
77 {
78 return ECHO_CLOCK_BIT_INTERNAL;
79 }
80
81
82
83 /* The IndigoIO has no ASIC. Just do nothing */
load_asic(struct echoaudio * chip)84 static int load_asic(struct echoaudio *chip)
85 {
86 return 0;
87 }
88
89
90
set_sample_rate(struct echoaudio * chip,u32 rate)91 static int set_sample_rate(struct echoaudio *chip, u32 rate)
92 {
93 if (wait_handshake(chip))
94 return -EIO;
95
96 chip->sample_rate = rate;
97 chip->comm_page->sample_rate = cpu_to_le32(rate);
98 clear_handshake(chip);
99 return send_vector(chip, DSP_VC_UPDATE_CLOCKS);
100 }
101
102
103
104 /* This function routes the sound from a virtual channel to a real output */
set_vmixer_gain(struct echoaudio * chip,u16 output,u16 pipe,int gain)105 static int set_vmixer_gain(struct echoaudio *chip, u16 output, u16 pipe,
106 int gain)
107 {
108 int index;
109
110 if (snd_BUG_ON(pipe >= num_pipes_out(chip) ||
111 output >= num_busses_out(chip)))
112 return -EINVAL;
113
114 if (wait_handshake(chip))
115 return -EIO;
116
117 chip->vmixer_gain[output][pipe] = gain;
118 index = output * num_pipes_out(chip) + pipe;
119 chip->comm_page->vmixer[index] = gain;
120
121 DE_ACT(("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. */
update_vmixer_level(struct echoaudio * chip)128 static 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