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 | if (snd_BUG_ON((subdevice_id & 0xfff0) != INDIGO_IO)) |
42 | return -ENODEV; |
43 | |
44 | err = init_dsp_comm_page(chip); |
45 | if (err) { |
46 | dev_err(chip->card->dev, |
47 | "init_hw - could not initialize DSP comm page\n" ); |
48 | return err; |
49 | } |
50 | |
51 | chip->device_id = device_id; |
52 | chip->subdevice_id = subdevice_id; |
53 | chip->bad_board = true; |
54 | chip->dsp_code_to_load = FW_INDIGO_IO_DSP; |
55 | /* Since this card has no ASIC, mark it as loaded so everything |
56 | works OK */ |
57 | chip->asic_loaded = true; |
58 | chip->input_clock_types = ECHO_CLOCK_BIT_INTERNAL; |
59 | |
60 | err = load_firmware(chip); |
61 | if (err < 0) |
62 | return err; |
63 | chip->bad_board = false; |
64 | |
65 | return err; |
66 | } |
67 | |
68 | |
69 | |
70 | static int set_mixer_defaults(struct echoaudio *chip) |
71 | { |
72 | return init_line_levels(chip); |
73 | } |
74 | |
75 | |
76 | |
77 | static u32 detect_input_clocks(const struct echoaudio *chip) |
78 | { |
79 | return ECHO_CLOCK_BIT_INTERNAL; |
80 | } |
81 | |
82 | |
83 | |
84 | /* The IndigoIO has no ASIC. Just do nothing */ |
85 | static int load_asic(struct echoaudio *chip) |
86 | { |
87 | return 0; |
88 | } |
89 | |
90 | |
91 | |
92 | static int set_sample_rate(struct echoaudio *chip, u32 rate) |
93 | { |
94 | if (wait_handshake(chip)) |
95 | return -EIO; |
96 | |
97 | chip->sample_rate = rate; |
98 | chip->comm_page->sample_rate = cpu_to_le32(rate); |
99 | clear_handshake(chip); |
100 | return send_vector(chip, DSP_VC_UPDATE_CLOCKS); |
101 | } |
102 | |
103 | |
104 | |
105 | /* This function routes the sound from a virtual channel to a real output */ |
106 | static int set_vmixer_gain(struct echoaudio *chip, u16 output, u16 pipe, |
107 | int gain) |
108 | { |
109 | int index; |
110 | |
111 | if (snd_BUG_ON(pipe >= num_pipes_out(chip) || |
112 | output >= num_busses_out(chip))) |
113 | return -EINVAL; |
114 | |
115 | if (wait_handshake(chip)) |
116 | return -EIO; |
117 | |
118 | chip->vmixer_gain[output][pipe] = gain; |
119 | index = output * num_pipes_out(chip) + pipe; |
120 | chip->comm_page->vmixer[index] = gain; |
121 | |
122 | dev_dbg(chip->card->dev, |
123 | "set_vmixer_gain: pipe %d, out %d = %d\n" , pipe, output, gain); |
124 | return 0; |
125 | } |
126 | |
127 | |
128 | |
129 | /* Tell the DSP to read and update virtual mixer levels in comm page. */ |
130 | static int update_vmixer_level(struct echoaudio *chip) |
131 | { |
132 | if (wait_handshake(chip)) |
133 | return -EIO; |
134 | clear_handshake(chip); |
135 | return send_vector(chip, DSP_VC_SET_VMIXER_GAIN); |
136 | } |
137 | |
138 | |