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 read_dsp(struct echoaudio *chip, u32 *data);
33 static int set_professional_spdif(struct echoaudio *chip, char prof);
34 static int load_asic_generic(struct echoaudio *chip, u32 cmd, short asic);
35 static int check_asic_status(struct echoaudio *chip);
36 static int update_flags(struct echoaudio *chip);
37
38
39 static int init_hw(struct echoaudio *chip, u16 device_id, u16 subdevice_id)
40 {
41 int err;
42
43 if (snd_BUG_ON((subdevice_id & 0xfff0) != LAYLA20))
44 return -ENODEV;
45
46 err = init_dsp_comm_page(chip);
47 if (err) {
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->has_midi = true;
57 chip->dsp_code_to_load = FW_LAYLA20_DSP;
58 chip->input_clock_types =
59 ECHO_CLOCK_BIT_INTERNAL | ECHO_CLOCK_BIT_SPDIF |
60 ECHO_CLOCK_BIT_WORD | ECHO_CLOCK_BIT_SUPER;
61 chip->output_clock_types =
62 ECHO_CLOCK_BIT_WORD | ECHO_CLOCK_BIT_SUPER;
63
64 err = load_firmware(chip);
65 if (err < 0)
66 return err;
67 chip->bad_board = false;
68
69 return err;
70 }
71
72
73
74 static int set_mixer_defaults(struct echoaudio *chip)
75 {
76 chip->professional_spdif = false;
77 return init_line_levels(chip);
78 }
79
80
81
82 static u32 detect_input_clocks(const struct echoaudio *chip)
83 {
84 u32 clocks_from_dsp, clock_bits;
85
86 /* Map the DSP clock detect bits to the generic driver clock 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 if (clocks_from_dsp & GLDM_CLOCK_DETECT_BIT_WORD) {
95 if (clocks_from_dsp & GLDM_CLOCK_DETECT_BIT_SUPER)
96 clock_bits |= ECHO_CLOCK_BIT_SUPER;
97 else
98 clock_bits |= ECHO_CLOCK_BIT_WORD;
99 }
100
101 return clock_bits;
102 }
103
104
105
106 /* ASIC status check - some cards have one or two ASICs that need to be
107 loaded. Once that load is complete, this function is called to see if
108 the load was successful.
109 If this load fails, it does not necessarily mean that the hardware is
110 defective - the external box may be disconnected or turned off.
111 This routine sometimes fails for Layla20; for Layla20, the loop runs
112 5 times and succeeds if it wins on three of the loops. */
113 static int check_asic_status(struct echoaudio *chip)
114 {
115 u32 asic_status;
116 int goodcnt, i;
117
118 chip->asic_loaded = false;
119 for (i = goodcnt = 0; i < 5; i++) {
120 send_vector(chip, DSP_VC_TEST_ASIC);
121
122 /* The DSP will return a value to indicate whether or not
123 the ASIC is currently loaded */
124 if (read_dsp(chip, &asic_status) < 0) {
125 dev_err(chip->card->dev,
126 "check_asic_status: failed on read_dsp\n");
127 return -EIO;
128 }
129
130 if (asic_status == ASIC_ALREADY_LOADED) {
131 if (++goodcnt == 3) {
132 chip->asic_loaded = true;
133 return 0;
134 }
135 }
136 }
137 return -EIO;
138 }
139
140
141
142 /* Layla20 has an ASIC in the external box */
143 static int load_asic(struct echoaudio *chip)
144 {
145 int err;
146
147 if (chip->asic_loaded)
148 return 0;
149
150 err = load_asic_generic(chip, DSP_FNC_LOAD_LAYLA_ASIC,
151 FW_LAYLA20_ASIC);
152 if (err < 0)
153 return err;
154
155 /* Check if ASIC is alive and well. */
156 return check_asic_status(chip);
157 }
158
159
160
161 static int set_sample_rate(struct echoaudio *chip, u32 rate)
162 {
163 if (snd_BUG_ON(rate < 8000 || rate > 50000))
164 return -EINVAL;
165
166 /* Only set the clock for internal mode. Do not return failure,
167 simply treat it as a non-event. */
168 if (chip->input_clock != ECHO_CLOCK_INTERNAL) {
169 dev_warn(chip->card->dev,
170 "Cannot set sample rate - clock not set to CLK_CLOCKININTERNAL\n");
171 chip->comm_page->sample_rate = cpu_to_le32(rate);
172 chip->sample_rate = rate;
173 return 0;
174 }
175
176 if (wait_handshake(chip))
177 return -EIO;
178
179 dev_dbg(chip->card->dev, "set_sample_rate(%d)\n", rate);
180 chip->sample_rate = rate;
181 chip->comm_page->sample_rate = cpu_to_le32(rate);
182 clear_handshake(chip);
183 return send_vector(chip, DSP_VC_SET_LAYLA_SAMPLE_RATE);
184 }
185
186
187
188 static int set_input_clock(struct echoaudio *chip, u16 clock_source)
189 {
190 u16 clock;
191 u32 rate;
192
193 rate = 0;
194 switch (clock_source) {
195 case ECHO_CLOCK_INTERNAL:
196 rate = chip->sample_rate;
197 clock = LAYLA20_CLOCK_INTERNAL;
198 break;
199 case ECHO_CLOCK_SPDIF:
200 clock = LAYLA20_CLOCK_SPDIF;
201 break;
202 case ECHO_CLOCK_WORD:
203 clock = LAYLA20_CLOCK_WORD;
204 break;
205 case ECHO_CLOCK_SUPER:
206 clock = LAYLA20_CLOCK_SUPER;
207 break;
208 default:
209 dev_err(chip->card->dev,
210 "Input clock 0x%x not supported for Layla24\n",
211 clock_source);
212 return -EINVAL;
213 }
214 chip->input_clock = clock_source;
215
216 chip->comm_page->input_clock = cpu_to_le16(clock);
217 clear_handshake(chip);
218 send_vector(chip, DSP_VC_UPDATE_CLOCKS);
219
220 if (rate)
221 set_sample_rate(chip, rate);
222
223 return 0;
224 }
225
226
227
228 static int set_output_clock(struct echoaudio *chip, u16 clock)
229 {
230 switch (clock) {
231 case ECHO_CLOCK_SUPER:
232 clock = LAYLA20_OUTPUT_CLOCK_SUPER;
233 break;
234 case ECHO_CLOCK_WORD:
235 clock = LAYLA20_OUTPUT_CLOCK_WORD;
236 break;
237 default:
238 dev_err(chip->card->dev, "set_output_clock wrong clock\n");
239 return -EINVAL;
240 }
241
242 if (wait_handshake(chip))
243 return -EIO;
244
245 chip->comm_page->output_clock = cpu_to_le16(clock);
246 chip->output_clock = clock;
247 clear_handshake(chip);
248 return send_vector(chip, DSP_VC_UPDATE_CLOCKS);
249 }
250
251
252
253 /* Set input bus gain (one unit is 0.5dB !) */
254 static int set_input_gain(struct echoaudio *chip, u16 input, int gain)
255 {
256 if (snd_BUG_ON(input >= num_busses_in(chip)))
257 return -EINVAL;
258
259 if (wait_handshake(chip))
260 return -EIO;
261
262 chip->input_gain[input] = gain;
263 gain += GL20_INPUT_GAIN_MAGIC_NUMBER;
264 chip->comm_page->line_in_level[input] = gain;
265 return 0;
266 }
267
268
269
270 /* Tell the DSP to reread the flags from the comm page */
271 static int update_flags(struct echoaudio *chip)
272 {
273 if (wait_handshake(chip))
274 return -EIO;
275 clear_handshake(chip);
276 return send_vector(chip, DSP_VC_UPDATE_FLAGS);
277 }
278
279
280
281 static int set_professional_spdif(struct echoaudio *chip, char prof)
282 {
283 if (prof)
284 chip->comm_page->flags |=
285 cpu_to_le32(DSP_FLAG_PROFESSIONAL_SPDIF);
286 else
287 chip->comm_page->flags &=
288 ~cpu_to_le32(DSP_FLAG_PROFESSIONAL_SPDIF);
289 chip->professional_spdif = prof;
290 return update_flags(chip);
291 }
292
Linux® is a registered trademark of Linus Torvalds in the United States and other countries.
TOMOYO® is a registered trademark of NTT DATA CORPORATION.