1*4882a593Smuzhiyun /************************************************************************
2*4882a593Smuzhiyun
3*4882a593Smuzhiyun This file is part of Echo Digital Audio's generic driver library.
4*4882a593Smuzhiyun Copyright Echo Digital Audio Corporation (c) 1998 - 2005
5*4882a593Smuzhiyun All rights reserved
6*4882a593Smuzhiyun www.echoaudio.com
7*4882a593Smuzhiyun
8*4882a593Smuzhiyun This library is free software; you can redistribute it and/or
9*4882a593Smuzhiyun modify it under the terms of the GNU Lesser General Public
10*4882a593Smuzhiyun License as published by the Free Software Foundation; either
11*4882a593Smuzhiyun version 2.1 of the License, or (at your option) any later version.
12*4882a593Smuzhiyun
13*4882a593Smuzhiyun This library is distributed in the hope that it will be useful,
14*4882a593Smuzhiyun but WITHOUT ANY WARRANTY; without even the implied warranty of
15*4882a593Smuzhiyun MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
16*4882a593Smuzhiyun Lesser General Public License for more details.
17*4882a593Smuzhiyun
18*4882a593Smuzhiyun You should have received a copy of the GNU Lesser General Public
19*4882a593Smuzhiyun License along with this library; if not, write to the Free Software
20*4882a593Smuzhiyun Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
21*4882a593Smuzhiyun
22*4882a593Smuzhiyun *************************************************************************
23*4882a593Smuzhiyun
24*4882a593Smuzhiyun Translation from C++ and adaptation for use in ALSA-Driver
25*4882a593Smuzhiyun were made by Giuliano Pochini <pochini@shiny.it>
26*4882a593Smuzhiyun
27*4882a593Smuzhiyun *************************************************************************/
28*4882a593Smuzhiyun
set_sample_rate(struct echoaudio * chip,u32 rate)29*4882a593Smuzhiyun static int set_sample_rate(struct echoaudio *chip, u32 rate)
30*4882a593Smuzhiyun {
31*4882a593Smuzhiyun u32 clock, control_reg, old_control_reg;
32*4882a593Smuzhiyun
33*4882a593Smuzhiyun if (wait_handshake(chip))
34*4882a593Smuzhiyun return -EIO;
35*4882a593Smuzhiyun
36*4882a593Smuzhiyun old_control_reg = le32_to_cpu(chip->comm_page->control_register);
37*4882a593Smuzhiyun control_reg = old_control_reg & ~INDIGO_EXPRESS_CLOCK_MASK;
38*4882a593Smuzhiyun
39*4882a593Smuzhiyun switch (rate) {
40*4882a593Smuzhiyun case 32000:
41*4882a593Smuzhiyun clock = INDIGO_EXPRESS_32000;
42*4882a593Smuzhiyun break;
43*4882a593Smuzhiyun case 44100:
44*4882a593Smuzhiyun clock = INDIGO_EXPRESS_44100;
45*4882a593Smuzhiyun break;
46*4882a593Smuzhiyun case 48000:
47*4882a593Smuzhiyun clock = INDIGO_EXPRESS_48000;
48*4882a593Smuzhiyun break;
49*4882a593Smuzhiyun case 64000:
50*4882a593Smuzhiyun clock = INDIGO_EXPRESS_32000|INDIGO_EXPRESS_DOUBLE_SPEED;
51*4882a593Smuzhiyun break;
52*4882a593Smuzhiyun case 88200:
53*4882a593Smuzhiyun clock = INDIGO_EXPRESS_44100|INDIGO_EXPRESS_DOUBLE_SPEED;
54*4882a593Smuzhiyun break;
55*4882a593Smuzhiyun case 96000:
56*4882a593Smuzhiyun clock = INDIGO_EXPRESS_48000|INDIGO_EXPRESS_DOUBLE_SPEED;
57*4882a593Smuzhiyun break;
58*4882a593Smuzhiyun default:
59*4882a593Smuzhiyun return -EINVAL;
60*4882a593Smuzhiyun }
61*4882a593Smuzhiyun
62*4882a593Smuzhiyun control_reg |= clock;
63*4882a593Smuzhiyun if (control_reg != old_control_reg) {
64*4882a593Smuzhiyun dev_dbg(chip->card->dev,
65*4882a593Smuzhiyun "set_sample_rate: %d clock %d\n", rate, clock);
66*4882a593Smuzhiyun chip->comm_page->control_register = cpu_to_le32(control_reg);
67*4882a593Smuzhiyun chip->sample_rate = rate;
68*4882a593Smuzhiyun clear_handshake(chip);
69*4882a593Smuzhiyun return send_vector(chip, DSP_VC_UPDATE_CLOCKS);
70*4882a593Smuzhiyun }
71*4882a593Smuzhiyun return 0;
72*4882a593Smuzhiyun }
73*4882a593Smuzhiyun
74*4882a593Smuzhiyun
75*4882a593Smuzhiyun
76*4882a593Smuzhiyun /* 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)77*4882a593Smuzhiyun static int set_vmixer_gain(struct echoaudio *chip, u16 output, u16 pipe,
78*4882a593Smuzhiyun int gain)
79*4882a593Smuzhiyun {
80*4882a593Smuzhiyun int index;
81*4882a593Smuzhiyun
82*4882a593Smuzhiyun if (snd_BUG_ON(pipe >= num_pipes_out(chip) ||
83*4882a593Smuzhiyun output >= num_busses_out(chip)))
84*4882a593Smuzhiyun return -EINVAL;
85*4882a593Smuzhiyun
86*4882a593Smuzhiyun if (wait_handshake(chip))
87*4882a593Smuzhiyun return -EIO;
88*4882a593Smuzhiyun
89*4882a593Smuzhiyun chip->vmixer_gain[output][pipe] = gain;
90*4882a593Smuzhiyun index = output * num_pipes_out(chip) + pipe;
91*4882a593Smuzhiyun chip->comm_page->vmixer[index] = gain;
92*4882a593Smuzhiyun
93*4882a593Smuzhiyun dev_dbg(chip->card->dev,
94*4882a593Smuzhiyun "set_vmixer_gain: pipe %d, out %d = %d\n", pipe, output, gain);
95*4882a593Smuzhiyun return 0;
96*4882a593Smuzhiyun }
97*4882a593Smuzhiyun
98*4882a593Smuzhiyun
99*4882a593Smuzhiyun
100*4882a593Smuzhiyun /* Tell the DSP to read and update virtual mixer levels in comm page. */
update_vmixer_level(struct echoaudio * chip)101*4882a593Smuzhiyun static int update_vmixer_level(struct echoaudio *chip)
102*4882a593Smuzhiyun {
103*4882a593Smuzhiyun if (wait_handshake(chip))
104*4882a593Smuzhiyun return -EIO;
105*4882a593Smuzhiyun clear_handshake(chip);
106*4882a593Smuzhiyun return send_vector(chip, DSP_VC_SET_VMIXER_GAIN);
107*4882a593Smuzhiyun }
108*4882a593Smuzhiyun
109*4882a593Smuzhiyun
110*4882a593Smuzhiyun
detect_input_clocks(const struct echoaudio * chip)111*4882a593Smuzhiyun static u32 detect_input_clocks(const struct echoaudio *chip)
112*4882a593Smuzhiyun {
113*4882a593Smuzhiyun return ECHO_CLOCK_BIT_INTERNAL;
114*4882a593Smuzhiyun }
115*4882a593Smuzhiyun
116*4882a593Smuzhiyun
117*4882a593Smuzhiyun
118*4882a593Smuzhiyun /* The IndigoIO has no ASIC. Just do nothing */
load_asic(struct echoaudio * chip)119*4882a593Smuzhiyun static int load_asic(struct echoaudio *chip)
120*4882a593Smuzhiyun {
121*4882a593Smuzhiyun return 0;
122*4882a593Smuzhiyun }
123