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gerrit-public.fairphone.software / kernel / msm / 6d6b89bd2e316b78d668f761d380837b81fa71ef / . / sound / pci / echoaudio / indigo_express_dsp.c
blob: 2e4ab3e34a7454e1053d131d768aadc8a12d4aab [file] [log] [blame]
Giuliano Pochinia2328d02009-03-19 00:09:03 +0100[diff] [blame]1/************************************************************************
2
3This file is part of Echo Digital Audio's generic driver library.
4Copyright Echo Digital Audio Corporation (c) 1998 - 2005
5All rights reserved
6www.echoaudio.com
7
8This library is free software; you can redistribute it and/or
9modify it under the terms of the GNU Lesser General Public
10License as published by the Free Software Foundation; either
11version 2.1 of the License, or (at your option) any later version.
12
13This library is distributed in the hope that it will be useful,
14but WITHOUT ANY WARRANTY; without even the implied warranty of
15MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
16Lesser General Public License for more details.
17
18You should have received a copy of the GNU Lesser General Public
19License along with this library; if not, write to the Free Software
20Foundation, 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
29static 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) {
Giuliano Pochiniad3499f2010-02-14 18:15:59 +0100[diff] [blame]64 DE_ACT(("set_sample_rate: %d clock %d\n", rate, clock));
Giuliano Pochinia2328d02009-03-19 00:09:03 +0100[diff] [blame]65 chip->comm_page->control_register = cpu_to_le32(control_reg);
66 chip->sample_rate = rate;
67 clear_handshake(chip);
68 return send_vector(chip, DSP_VC_UPDATE_CLOCKS);
69 }
70 return 0;
71}
72
73
74
75/* This function routes the sound from a virtual channel to a real output */
76static int set_vmixer_gain(struct echoaudio *chip, u16 output, u16 pipe,
77 int gain)
78{
79 int index;
80
81 if (snd_BUG_ON(pipe >= num_pipes_out(chip) ||
82 output >= num_busses_out(chip)))
83 return -EINVAL;
84
85 if (wait_handshake(chip))
86 return -EIO;
87
88 chip->vmixer_gain[output][pipe] = gain;
89 index = output * num_pipes_out(chip) + pipe;
90 chip->comm_page->vmixer[index] = gain;
91
92 DE_ACT(("set_vmixer_gain: pipe %d, out %d = %d\n", pipe, output, gain));
93 return 0;
94}
95
96
97
98/* Tell the DSP to read and update virtual mixer levels in comm page. */
99static int update_vmixer_level(struct echoaudio *chip)
100{
101 if (wait_handshake(chip))
102 return -EIO;
103 clear_handshake(chip);
104 return send_vector(chip, DSP_VC_SET_VMIXER_GAIN);
105}
106
107
108
109static u32 detect_input_clocks(const struct echoaudio *chip)
110{
111 return ECHO_CLOCK_BIT_INTERNAL;
112}
113
114
115
116/* The IndigoIO has no ASIC. Just do nothing */
117static int load_asic(struct echoaudio *chip)
118{
119 return 0;
120}