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
init_hw(struct echoaudio * chip,u16 device_id,u16 subdevice_id)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 if ((err = init_dsp_comm_page(chip))) {
47 dev_err(chip->card->dev,
48 "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->has_midi = true;
56 chip->dsp_code_to_load = FW_LAYLA20_DSP;
57 chip->input_clock_types =
58 ECHO_CLOCK_BIT_INTERNAL | ECHO_CLOCK_BIT_SPDIF |
59 ECHO_CLOCK_BIT_WORD | ECHO_CLOCK_BIT_SUPER;
60 chip->output_clock_types =
61 ECHO_CLOCK_BIT_WORD | ECHO_CLOCK_BIT_SUPER;
62
63 if ((err = load_firmware(chip)) < 0)
64 return err;
65 chip->bad_board = false;
66
67 return err;
68 }
69
70
71
set_mixer_defaults(struct echoaudio * chip)72 static int set_mixer_defaults(struct echoaudio *chip)
73 {
74 chip->professional_spdif = false;
75 return init_line_levels(chip);
76 }
77
78
79
detect_input_clocks(const struct echoaudio * chip)80 static u32 detect_input_clocks(const struct echoaudio *chip)
81 {
82 u32 clocks_from_dsp, clock_bits;
83
84 /* Map the DSP clock detect bits to the generic driver clock detect bits */
85 clocks_from_dsp = le32_to_cpu(chip->comm_page->status_clocks);
86
87 clock_bits = ECHO_CLOCK_BIT_INTERNAL;
88
89 if (clocks_from_dsp & GLDM_CLOCK_DETECT_BIT_SPDIF)
90 clock_bits |= ECHO_CLOCK_BIT_SPDIF;
91
92 if (clocks_from_dsp & GLDM_CLOCK_DETECT_BIT_WORD) {
93 if (clocks_from_dsp & GLDM_CLOCK_DETECT_BIT_SUPER)
94 clock_bits |= ECHO_CLOCK_BIT_SUPER;
95 else
96 clock_bits |= ECHO_CLOCK_BIT_WORD;
97 }
98
99 return clock_bits;
100 }
101
102
103
104 /* ASIC status check - some cards have one or two ASICs that need to be
105 loaded. Once that load is complete, this function is called to see if
106 the load was successful.
107 If this load fails, it does not necessarily mean that the hardware is
108 defective - the external box may be disconnected or turned off.
109 This routine sometimes fails for Layla20; for Layla20, the loop runs
110 5 times and succeeds if it wins on three of the loops. */
check_asic_status(struct echoaudio * chip)111 static int check_asic_status(struct echoaudio *chip)
112 {
113 u32 asic_status;
114 int goodcnt, i;
115
116 chip->asic_loaded = false;
117 for (i = goodcnt = 0; i < 5; i++) {
118 send_vector(chip, DSP_VC_TEST_ASIC);
119
120 /* The DSP will return a value to indicate whether or not
121 the ASIC is currently loaded */
122 if (read_dsp(chip, &asic_status) < 0) {
123 dev_err(chip->card->dev,
124 "check_asic_status: failed on read_dsp\n");
125 return -EIO;
126 }
127
128 if (asic_status == ASIC_ALREADY_LOADED) {
129 if (++goodcnt == 3) {
130 chip->asic_loaded = true;
131 return 0;
132 }
133 }
134 }
135 return -EIO;
136 }
137
138
139
140 /* Layla20 has an ASIC in the external box */
load_asic(struct echoaudio * chip)141 static int load_asic(struct echoaudio *chip)
142 {
143 int err;
144
145 if (chip->asic_loaded)
146 return 0;
147
148 err = load_asic_generic(chip, DSP_FNC_LOAD_LAYLA_ASIC,
149 FW_LAYLA20_ASIC);
150 if (err < 0)
151 return err;
152
153 /* Check if ASIC is alive and well. */
154 return check_asic_status(chip);
155 }
156
157
158
set_sample_rate(struct echoaudio * chip,u32 rate)159 static int set_sample_rate(struct echoaudio *chip, u32 rate)
160 {
161 if (snd_BUG_ON(rate < 8000 || rate > 50000))
162 return -EINVAL;
163
164 /* Only set the clock for internal mode. Do not return failure,
165 simply treat it as a non-event. */
166 if (chip->input_clock != ECHO_CLOCK_INTERNAL) {
167 dev_warn(chip->card->dev,
168 "Cannot set sample rate - clock not set to CLK_CLOCKININTERNAL\n");
169 chip->comm_page->sample_rate = cpu_to_le32(rate);
170 chip->sample_rate = rate;
171 return 0;
172 }
173
174 if (wait_handshake(chip))
175 return -EIO;
176
177 dev_dbg(chip->card->dev, "set_sample_rate(%d)\n", rate);
178 chip->sample_rate = rate;
179 chip->comm_page->sample_rate = cpu_to_le32(rate);
180 clear_handshake(chip);
181 return send_vector(chip, DSP_VC_SET_LAYLA_SAMPLE_RATE);
182 }
183
184
185
set_input_clock(struct echoaudio * chip,u16 clock_source)186 static int set_input_clock(struct echoaudio *chip, u16 clock_source)
187 {
188 u16 clock;
189 u32 rate;
190
191 rate = 0;
192 switch (clock_source) {
193 case ECHO_CLOCK_INTERNAL:
194 rate = chip->sample_rate;
195 clock = LAYLA20_CLOCK_INTERNAL;
196 break;
197 case ECHO_CLOCK_SPDIF:
198 clock = LAYLA20_CLOCK_SPDIF;
199 break;
200 case ECHO_CLOCK_WORD:
201 clock = LAYLA20_CLOCK_WORD;
202 break;
203 case ECHO_CLOCK_SUPER:
204 clock = LAYLA20_CLOCK_SUPER;
205 break;
206 default:
207 dev_err(chip->card->dev,
208 "Input clock 0x%x not supported for Layla24\n",
209 clock_source);
210 return -EINVAL;
211 }
212 chip->input_clock = clock_source;
213
214 chip->comm_page->input_clock = cpu_to_le16(clock);
215 clear_handshake(chip);
216 send_vector(chip, DSP_VC_UPDATE_CLOCKS);
217
218 if (rate)
219 set_sample_rate(chip, rate);
220
221 return 0;
222 }
223
224
225
set_output_clock(struct echoaudio * chip,u16 clock)226 static int set_output_clock(struct echoaudio *chip, u16 clock)
227 {
228 switch (clock) {
229 case ECHO_CLOCK_SUPER:
230 clock = LAYLA20_OUTPUT_CLOCK_SUPER;
231 break;
232 case ECHO_CLOCK_WORD:
233 clock = LAYLA20_OUTPUT_CLOCK_WORD;
234 break;
235 default:
236 dev_err(chip->card->dev, "set_output_clock wrong clock\n");
237 return -EINVAL;
238 }
239
240 if (wait_handshake(chip))
241 return -EIO;
242
243 chip->comm_page->output_clock = cpu_to_le16(clock);
244 chip->output_clock = clock;
245 clear_handshake(chip);
246 return send_vector(chip, DSP_VC_UPDATE_CLOCKS);
247 }
248
249
250
251 /* Set input bus gain (one unit is 0.5dB !) */
set_input_gain(struct echoaudio * chip,u16 input,int gain)252 static int set_input_gain(struct echoaudio *chip, u16 input, int gain)
253 {
254 if (snd_BUG_ON(input >= num_busses_in(chip)))
255 return -EINVAL;
256
257 if (wait_handshake(chip))
258 return -EIO;
259
260 chip->input_gain[input] = gain;
261 gain += GL20_INPUT_GAIN_MAGIC_NUMBER;
262 chip->comm_page->line_in_level[input] = gain;
263 return 0;
264 }
265
266
267
268 /* Tell the DSP to reread the flags from the comm page */
update_flags(struct echoaudio * chip)269 static int update_flags(struct echoaudio *chip)
270 {
271 if (wait_handshake(chip))
272 return -EIO;
273 clear_handshake(chip);
274 return send_vector(chip, DSP_VC_UPDATE_FLAGS);
275 }
276
277
278
set_professional_spdif(struct echoaudio * chip,char prof)279 static int set_professional_spdif(struct echoaudio *chip, char prof)
280 {
281 if (prof)
282 chip->comm_page->flags |=
283 cpu_to_le32(DSP_FLAG_PROFESSIONAL_SPDIF);
284 else
285 chip->comm_page->flags &=
286 ~cpu_to_le32(DSP_FLAG_PROFESSIONAL_SPDIF);
287 chip->professional_spdif = prof;
288 return update_flags(chip);
289 }
290
