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_DJ))
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_DJ_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 IndigoDJ 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 u32 control_reg;
95
96 switch (rate) {
97 case 96000:
98 control_reg = MIA_96000;
99 break;
100 case 88200:
101 control_reg = MIA_88200;
102 break;
103 case 48000:
104 control_reg = MIA_48000;
105 break;
106 case 44100:
107 control_reg = MIA_44100;
108 break;
109 case 32000:
110 control_reg = MIA_32000;
111 break;
112 default:
113 dev_err(chip->card->dev,
114 "set_sample_rate: %d invalid!\n", rate);
115 return -EINVAL;
116 }
117
118 /* Set the control register if it has changed */
119 if (control_reg != le32_to_cpu(chip->comm_page->control_register)) {
120 if (wait_handshake(chip))
121 return -EIO;
122
123 chip->comm_page->sample_rate = cpu_to_le32(rate); /* ignored by the DSP */
124 chip->comm_page->control_register = cpu_to_le32(control_reg);
125 chip->sample_rate = rate;
126
127 clear_handshake(chip);
128 return send_vector(chip, DSP_VC_UPDATE_CLOCKS);
129 }
130 return 0;
131 }
132
133
134
135 /* This function routes the sound from a virtual channel to a real output */
136 static int set_vmixer_gain(struct echoaudio *chip, u16 output, u16 pipe,
137 int gain)
138 {
139 int index;
140
141 if (snd_BUG_ON(pipe >= num_pipes_out(chip) ||
142 output >= num_busses_out(chip)))
143 return -EINVAL;
144
145 if (wait_handshake(chip))
146 return -EIO;
147
148 chip->vmixer_gain[output][pipe] = gain;
149 index = output * num_pipes_out(chip) + pipe;
150 chip->comm_page->vmixer[index] = gain;
151
152 dev_dbg(chip->card->dev,
153 "set_vmixer_gain: pipe %d, out %d = %d\n", pipe, output, gain);
154 return 0;
155 }
156
157
158
159 /* Tell the DSP to read and update virtual mixer levels in comm page. */
160 static int update_vmixer_level(struct echoaudio *chip)
161 {
162 if (wait_handshake(chip))
163 return -EIO;
164 clear_handshake(chip);
165 return send_vector(chip, DSP_VC_SET_VMIXER_GAIN);
166 }
167
168
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