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dd7b254d GP |
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 |