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, data: &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 | |