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 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
set_mixer_defaults(struct echoaudio * chip)68 static int set_mixer_defaults(struct echoaudio *chip)
69 {
70 return init_line_levels(chip);
71 }
72
73
74
detect_input_clocks(const struct echoaudio * chip)75 static 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 */
load_asic(struct echoaudio * chip)83 static int load_asic(struct echoaudio *chip)
84 {
85 return 0;
86 }
87
88
89
set_sample_rate(struct echoaudio * chip,u32 rate)90 static 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 */
set_vmixer_gain(struct echoaudio * chip,u16 output,u16 pipe,int gain)104 static 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. */
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