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