1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
142
143
144
145
146
147
148
149
150
151
152
153
154
155
156
157
158
159
160
161
162
163
164
165
166
167
168
169
170
171
172
173
174
175
176
177
178
179
180
181
182
183
184
185
186
187
188
189
190
191
192
193
194
195
196
197
198
199
200
201
202
203
204
205
206
207
208
209
210
211
212
213
214
215
216
217
218
219
220
|
/****************************************************************************
Copyright Echo Digital Audio Corporation (c) 1998 - 2004
All rights reserved
www.echoaudio.com
This file is part of Echo Digital Audio's generic driver library.
Echo Digital Audio's generic driver library is free software;
you can redistribute it and/or modify it under the terms of
the GNU General Public License as published by the Free Software
Foundation.
This program is distributed in the hope that it will be useful,
but WITHOUT ANY WARRANTY; without even the implied warranty of
MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
GNU General Public License for more details.
You should have received a copy of the GNU General Public License
along with this program; if not, write to the Free Software
Foundation, Inc., 59 Temple Place - Suite 330, Boston,
MA 02111-1307, USA.
*************************************************************************
Translation from C++ and adaptation for use in ALSA-Driver
were made by Giuliano Pochini <pochini@shiny.it>
****************************************************************************/
static int set_input_clock(struct echoaudio *chip, u16 clock);
static int set_professional_spdif(struct echoaudio *chip, char prof);
static int update_flags(struct echoaudio *chip);
static int set_vmixer_gain(struct echoaudio *chip, u16 output, u16 pipe,
int gain);
static int update_vmixer_level(struct echoaudio *chip);
static int init_hw(struct echoaudio *chip, u16 device_id, u16 subdevice_id)
{
int err;
DE_INIT(("init_hw() - Mia\n"));
if (snd_BUG_ON((subdevice_id & 0xfff0) != MIA))
return -ENODEV;
if ((err = init_dsp_comm_page(chip))) {
DE_INIT(("init_hw - could not initialize DSP comm page\n"));
return err;
}
chip->device_id = device_id;
chip->subdevice_id = subdevice_id;
chip->bad_board = TRUE;
chip->dsp_code_to_load = FW_MIA_DSP;
/* Since this card has no ASIC, mark it as loaded so everything
works OK */
chip->asic_loaded = TRUE;
if ((subdevice_id & 0x0000f) == MIA_MIDI_REV)
chip->has_midi = TRUE;
chip->input_clock_types = ECHO_CLOCK_BIT_INTERNAL |
ECHO_CLOCK_BIT_SPDIF;
if ((err = load_firmware(chip)) < 0)
return err;
chip->bad_board = FALSE;
if ((err = init_line_levels(chip)))
return err;
DE_INIT(("init_hw done\n"));
return err;
}
static u32 detect_input_clocks(const struct echoaudio *chip)
{
u32 clocks_from_dsp, clock_bits;
/* Map the DSP clock detect bits to the generic driver clock
detect bits */
clocks_from_dsp = le32_to_cpu(chip->comm_page->status_clocks);
clock_bits = ECHO_CLOCK_BIT_INTERNAL;
if (clocks_from_dsp & GLDM_CLOCK_DETECT_BIT_SPDIF)
clock_bits |= ECHO_CLOCK_BIT_SPDIF;
return clock_bits;
}
/* The Mia has no ASIC. Just do nothing */
static int load_asic(struct echoaudio *chip)
{
return 0;
}
static int set_sample_rate(struct echoaudio *chip, u32 rate)
{
u32 control_reg;
switch (rate) {
case 96000:
control_reg = MIA_96000;
break;
case 88200:
control_reg = MIA_88200;
break;
case 48000:
control_reg = MIA_48000;
break;
case 44100:
control_reg = MIA_44100;
break;
case 32000:
control_reg = MIA_32000;
break;
default:
DE_ACT(("set_sample_rate: %d invalid!\n", rate));
return -EINVAL;
}
/* Override the clock setting if this Mia is set to S/PDIF clock */
if (chip->input_clock == ECHO_CLOCK_SPDIF)
control_reg |= MIA_SPDIF;
/* Set the control register if it has changed */
if (control_reg != le32_to_cpu(chip->comm_page->control_register)) {
if (wait_handshake(chip))
return -EIO;
chip->comm_page->sample_rate = cpu_to_le32(rate); /* ignored by the DSP */
chip->comm_page->control_register = cpu_to_le32(control_reg);
chip->sample_rate = rate;
clear_handshake(chip);
return send_vector(chip, DSP_VC_UPDATE_CLOCKS);
}
return 0;
}
static int set_input_clock(struct echoaudio *chip, u16 clock)
{
DE_ACT(("set_input_clock(%d)\n", clock));
if (snd_BUG_ON(clock != ECHO_CLOCK_INTERNAL &&
clock != ECHO_CLOCK_SPDIF))
return -EINVAL;
chip->input_clock = clock;
return set_sample_rate(chip, chip->sample_rate);
}
/* This function routes the sound from a virtual channel to a real output */
static int set_vmixer_gain(struct echoaudio *chip, u16 output, u16 pipe,
int gain)
{
int index;
if (snd_BUG_ON(pipe >= num_pipes_out(chip) ||
output >= num_busses_out(chip)))
return -EINVAL;
if (wait_handshake(chip))
return -EIO;
chip->vmixer_gain[output][pipe] = gain;
index = output * num_pipes_out(chip) + pipe;
chip->comm_page->vmixer[index] = gain;
DE_ACT(("set_vmixer_gain: pipe %d, out %d = %d\n", pipe, output, gain));
return 0;
}
/* Tell the DSP to read and update virtual mixer levels in comm page. */
static int update_vmixer_level(struct echoaudio *chip)
{
if (wait_handshake(chip))
return -EIO;
clear_handshake(chip);
return send_vector(chip, DSP_VC_SET_VMIXER_GAIN);
}
/* Tell the DSP to reread the flags from the comm page */
static int update_flags(struct echoaudio *chip)
{
if (wait_handshake(chip))
return -EIO;
clear_handshake(chip);
return send_vector(chip, DSP_VC_UPDATE_FLAGS);
}
static int set_professional_spdif(struct echoaudio *chip, char prof)
{
DE_ACT(("set_professional_spdif %d\n", prof));
if (prof)
chip->comm_page->flags |=
cpu_to_le32(DSP_FLAG_PROFESSIONAL_SPDIF);
else
chip->comm_page->flags &=
~cpu_to_le32(DSP_FLAG_PROFESSIONAL_SPDIF);
chip->professional_spdif = prof;
return update_flags(chip);
}
|
