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