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a2328d02 GP |
1 | /************************************************************************ |
2 | ||
3 | This file is part of Echo Digital Audio's generic driver library. | |
4 | Copyright Echo Digital Audio Corporation (c) 1998 - 2005 | |
5 | All rights reserved | |
6 | www.echoaudio.com | |
7 | ||
8 | This library is free software; you can redistribute it and/or | |
9 | modify it under the terms of the GNU Lesser General Public | |
10 | License as published by the Free Software Foundation; either | |
11 | version 2.1 of the License, or (at your option) any later version. | |
12 | ||
13 | This library is distributed in the hope that it will be useful, | |
14 | but WITHOUT ANY WARRANTY; without even the implied warranty of | |
15 | MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU | |
16 | Lesser General Public License for more details. | |
17 | ||
18 | You should have received a copy of the GNU Lesser General Public | |
19 | License along with this library; if not, write to the Free Software | |
20 | Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA | |
21 | ||
22 | ************************************************************************* | |
23 | ||
24 | Translation from C++ and adaptation for use in ALSA-Driver | |
25 | were made by Giuliano Pochini <pochini@shiny.it> | |
26 | ||
27 | *************************************************************************/ | |
28 | ||
29 | static int set_sample_rate(struct echoaudio *chip, u32 rate) | |
30 | { | |
31 | u32 clock, control_reg, old_control_reg; | |
32 | ||
33 | if (wait_handshake(chip)) | |
34 | return -EIO; | |
35 | ||
36 | old_control_reg = le32_to_cpu(chip->comm_page->control_register); | |
37 | control_reg = old_control_reg & ~INDIGO_EXPRESS_CLOCK_MASK; | |
38 | ||
39 | switch (rate) { | |
40 | case 32000: | |
41 | clock = INDIGO_EXPRESS_32000; | |
42 | break; | |
43 | case 44100: | |
44 | clock = INDIGO_EXPRESS_44100; | |
45 | break; | |
46 | case 48000: | |
47 | clock = INDIGO_EXPRESS_48000; | |
48 | break; | |
49 | case 64000: | |
50 | clock = INDIGO_EXPRESS_32000|INDIGO_EXPRESS_DOUBLE_SPEED; | |
51 | break; | |
52 | case 88200: | |
53 | clock = INDIGO_EXPRESS_44100|INDIGO_EXPRESS_DOUBLE_SPEED; | |
54 | break; | |
55 | case 96000: | |
56 | clock = INDIGO_EXPRESS_48000|INDIGO_EXPRESS_DOUBLE_SPEED; | |
57 | break; | |
58 | default: | |
59 | return -EINVAL; | |
60 | } | |
61 | ||
62 | control_reg |= clock; | |
63 | if (control_reg != old_control_reg) { | |
b5b4a41b SM |
64 | dev_dbg(chip->card->dev, |
65 | "set_sample_rate: %d clock %d\n", rate, clock); | |
a2328d02 GP |
66 | chip->comm_page->control_register = cpu_to_le32(control_reg); |
67 | chip->sample_rate = rate; | |
68 | clear_handshake(chip); | |
69 | return send_vector(chip, DSP_VC_UPDATE_CLOCKS); | |
70 | } | |
71 | return 0; | |
72 | } | |
73 | ||
74 | ||
75 | ||
76 | /* This function routes the sound from a virtual channel to a real output */ | |
77 | static int set_vmixer_gain(struct echoaudio *chip, u16 output, u16 pipe, | |
78 | int gain) | |
79 | { | |
80 | int index; | |
81 | ||
82 | if (snd_BUG_ON(pipe >= num_pipes_out(chip) || | |
83 | output >= num_busses_out(chip))) | |
84 | return -EINVAL; | |
85 | ||
86 | if (wait_handshake(chip)) | |
87 | return -EIO; | |
88 | ||
89 | chip->vmixer_gain[output][pipe] = gain; | |
90 | index = output * num_pipes_out(chip) + pipe; | |
91 | chip->comm_page->vmixer[index] = gain; | |
92 | ||
b5b4a41b SM |
93 | dev_dbg(chip->card->dev, |
94 | "set_vmixer_gain: pipe %d, out %d = %d\n", pipe, output, gain); | |
a2328d02 GP |
95 | return 0; |
96 | } | |
97 | ||
98 | ||
99 | ||
100 | /* Tell the DSP to read and update virtual mixer levels in comm page. */ | |
101 | static int update_vmixer_level(struct echoaudio *chip) | |
102 | { | |
103 | if (wait_handshake(chip)) | |
104 | return -EIO; | |
105 | clear_handshake(chip); | |
106 | return send_vector(chip, DSP_VC_SET_VMIXER_GAIN); | |
107 | } | |
108 | ||
109 | ||
110 | ||
111 | static u32 detect_input_clocks(const struct echoaudio *chip) | |
112 | { | |
113 | return ECHO_CLOCK_BIT_INTERNAL; | |
114 | } | |
115 | ||
116 | ||
117 | ||
118 | /* The IndigoIO has no ASIC. Just do nothing */ | |
119 | static int load_asic(struct echoaudio *chip) | |
120 | { | |
121 | return 0; | |
122 | } |