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_input_clock(struct echoaudio *chip, u16 clock);
33 static int set_professional_spdif(struct echoaudio *chip, char prof);
34 static int update_flags(struct echoaudio *chip);
35 static int set_vmixer_gain(struct echoaudio *chip, u16 output, u16 pipe,
36 int gain);
37 static int update_vmixer_level(struct echoaudio *chip);
38
39
40 static int init_hw(struct echoaudio *chip, u16 device_id, u16 subdevice_id)
41 {
42 int err;
43
44 DE_INIT(("init_hw() - Mia\n"));
45 snd_assert((subdevice_id & 0xfff0) == MIA, return -ENODEV);
46
47 if ((err = init_dsp_comm_page(chip))) {
48 DE_INIT(("init_hw - could not initialize DSP comm page\n"));
49 return err;
50 }
51
52 chip->device_id = device_id;
53 chip->subdevice_id = subdevice_id;
54 chip->bad_board = TRUE;
55 chip->dsp_code_to_load = &card_fw[FW_MIA_DSP];
56 /* Since this card has no ASIC, mark it as loaded so everything
57 works OK */
58 chip->asic_loaded = TRUE;
59 if ((subdevice_id & 0x0000f) == MIA_MIDI_REV)
60 chip->has_midi = TRUE;
61 chip->input_clock_types = ECHO_CLOCK_BIT_INTERNAL |
62 ECHO_CLOCK_BIT_SPDIF;
63
64 if ((err = load_firmware(chip)) < 0)
65 return err;
66 chip->bad_board = FALSE;
67
68 if ((err = init_line_levels(chip)))
69 return err;
70
71 /* Default routing of the virtual channels: vchannels 0-3 go to analog
72 outputs and vchannels 4-7 go to S/PDIF outputs */
73 set_vmixer_gain(chip, 0, 0, 0);
74 set_vmixer_gain(chip, 1, 1, 0);
75 set_vmixer_gain(chip, 0, 2, 0);
76 set_vmixer_gain(chip, 1, 3, 0);
77 set_vmixer_gain(chip, 2, 4, 0);
78 set_vmixer_gain(chip, 3, 5, 0);
79 set_vmixer_gain(chip, 2, 6, 0);
80 set_vmixer_gain(chip, 3, 7, 0);
81 err = update_vmixer_level(chip);
82
83 DE_INIT(("init_hw done\n"));
84 return err;
85 }
86
87
88
89 static u32 detect_input_clocks(const struct echoaudio *chip)
90 {
91 u32 clocks_from_dsp, clock_bits;
92
93 /* Map the DSP clock detect bits to the generic driver clock
94 detect bits */
95 clocks_from_dsp = le32_to_cpu(chip->comm_page->status_clocks);
96
97 clock_bits = ECHO_CLOCK_BIT_INTERNAL;
98
99 if (clocks_from_dsp & GLDM_CLOCK_DETECT_BIT_SPDIF)
100 clock_bits |= ECHO_CLOCK_BIT_SPDIF;
101
102 return clock_bits;
103 }
104
105
106
107 /* The Mia has no ASIC. Just do nothing */
108 static int load_asic(struct echoaudio *chip)
109 {
110 return 0;
111 }
112
113
114
115 static int set_sample_rate(struct echoaudio *chip, u32 rate)
116 {
117 u32 control_reg;
118
119 switch (rate) {
120 case 96000:
121 control_reg = MIA_96000;
122 break;
123 case 88200:
124 control_reg = MIA_88200;
125 break;
126 case 48000:
127 control_reg = MIA_48000;
128 break;
129 case 44100:
130 control_reg = MIA_44100;
131 break;
132 case 32000:
133 control_reg = MIA_32000;
134 break;
135 default:
136 DE_ACT(("set_sample_rate: %d invalid!\n", rate));
137 return -EINVAL;
138 }
139
140 /* Override the clock setting if this Mia is set to S/PDIF clock */
141 if (chip->input_clock == ECHO_CLOCK_SPDIF)
142 control_reg |= MIA_SPDIF;
143
144 /* Set the control register if it has changed */
145 if (control_reg != le32_to_cpu(chip->comm_page->control_register)) {
146 if (wait_handshake(chip))
147 return -EIO;
148
149 chip->comm_page->sample_rate = cpu_to_le32(rate); /* ignored by the DSP */
150 chip->comm_page->control_register = cpu_to_le32(control_reg);
151 chip->sample_rate = rate;
152
153 clear_handshake(chip);
154 return send_vector(chip, DSP_VC_UPDATE_CLOCKS);
155 }
156 return 0;
157 }
158
159
160
161 static int set_input_clock(struct echoaudio *chip, u16 clock)
162 {
163 DE_ACT(("set_input_clock(%d)\n", clock));
164 snd_assert(clock == ECHO_CLOCK_INTERNAL || clock == ECHO_CLOCK_SPDIF,
165 return -EINVAL);
166
167 chip->input_clock = clock;
168 return set_sample_rate(chip, chip->sample_rate);
169 }
170
171
172
173 /* This function routes the sound from a virtual channel to a real output */
174 static int set_vmixer_gain(struct echoaudio *chip, u16 output, u16 pipe,
175 int gain)
176 {
177 int index;
178
179 snd_assert(pipe < num_pipes_out(chip) &&
180 output < num_busses_out(chip), return -EINVAL);
181
182 if (wait_handshake(chip))
183 return -EIO;
184
185 chip->vmixer_gain[output][pipe] = gain;
186 index = output * num_pipes_out(chip) + pipe;
187 chip->comm_page->vmixer[index] = gain;
188
189 DE_ACT(("set_vmixer_gain: pipe %d, out %d = %d\n", pipe, output, gain));
190 return 0;
191 }
192
193
194
195 /* Tell the DSP to read and update virtual mixer levels in comm page. */
196 static int update_vmixer_level(struct echoaudio *chip)
197 {
198 if (wait_handshake(chip))
199 return -EIO;
200 clear_handshake(chip);
201 return send_vector(chip, DSP_VC_SET_VMIXER_GAIN);
202 }
203
204
205
206 /* Tell the DSP to reread the flags from the comm page */
207 static int update_flags(struct echoaudio *chip)
208 {
209 if (wait_handshake(chip))
210 return -EIO;
211 clear_handshake(chip);
212 return send_vector(chip, DSP_VC_UPDATE_FLAGS);
213 }
214
215
216
217 static int set_professional_spdif(struct echoaudio *chip, char prof)
218 {
219 DE_ACT(("set_professional_spdif %d\n", prof));
220 if (prof)
221 chip->comm_page->flags |=
222 __constant_cpu_to_le32(DSP_FLAG_PROFESSIONAL_SPDIF);
223 else
224 chip->comm_page->flags &=
225 ~__constant_cpu_to_le32(DSP_FLAG_PROFESSIONAL_SPDIF);
226 chip->professional_spdif = prof;
227 return update_flags(chip);
228 }
229
230
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