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TOMOYO Linux Cross Reference
Linux/sound/pci/echoaudio/mona_dsp.c

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Architecture: ~ [ i386 ] ~ [ alpha ] ~ [ m68k ] ~ [ mips ] ~ [ ppc ] ~ [ sparc ] ~ [ sparc64 ] ~

  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 write_control_reg(struct echoaudio *chip, u32 value, char force);
 33 static int set_input_clock(struct echoaudio *chip, u16 clock);
 34 static int set_professional_spdif(struct echoaudio *chip, char prof);
 35 static int set_digital_mode(struct echoaudio *chip, u8 mode);
 36 static int load_asic_generic(struct echoaudio *chip, u32 cmd, short asic);
 37 static int check_asic_status(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) != MONA))
 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->input_clock_types =
 57                 ECHO_CLOCK_BIT_INTERNAL | ECHO_CLOCK_BIT_SPDIF |
 58                 ECHO_CLOCK_BIT_WORD | ECHO_CLOCK_BIT_ADAT;
 59         chip->digital_modes =
 60                 ECHOCAPS_HAS_DIGITAL_MODE_SPDIF_RCA |
 61                 ECHOCAPS_HAS_DIGITAL_MODE_SPDIF_OPTICAL |
 62                 ECHOCAPS_HAS_DIGITAL_MODE_ADAT;
 63 
 64         /* Mona comes in both '301 and '361 flavors */
 65         if (chip->device_id == DEVICE_ID_56361)
 66                 chip->dsp_code_to_load = FW_MONA_361_DSP;
 67         else
 68                 chip->dsp_code_to_load = FW_MONA_301_DSP;
 69 
 70         if ((err = load_firmware(chip)) < 0)
 71                 return err;
 72         chip->bad_board = false;
 73 
 74         return err;
 75 }
 76 
 77 
 78 
 79 static int set_mixer_defaults(struct echoaudio *chip)
 80 {
 81         chip->digital_mode = DIGITAL_MODE_SPDIF_RCA;
 82         chip->professional_spdif = false;
 83         chip->digital_in_automute = true;
 84         return init_line_levels(chip);
 85 }
 86 
 87 
 88 
 89 static u32 detect_input_clocks(const struct echoaudio *chip)
 90 {
 91         u32 clocks_from_dsp, clock_bits;
 92 
 93         /* Map the DSP clock detect bits to the generic driver clock
 94            detect bits */
 95         clocks_from_dsp = le32_to_cpu(chip->comm_page->status_clocks);
 96 
 97         clock_bits = ECHO_CLOCK_BIT_INTERNAL;
 98 
 99         if (clocks_from_dsp & GML_CLOCK_DETECT_BIT_SPDIF)
100                 clock_bits |= ECHO_CLOCK_BIT_SPDIF;
101 
102         if (clocks_from_dsp & GML_CLOCK_DETECT_BIT_ADAT)
103                 clock_bits |= ECHO_CLOCK_BIT_ADAT;
104 
105         if (clocks_from_dsp & GML_CLOCK_DETECT_BIT_WORD)
106                 clock_bits |= ECHO_CLOCK_BIT_WORD;
107 
108         return clock_bits;
109 }
110 
111 
112 
113 /* Mona has an ASIC on the PCI card and another ASIC in the external box; 
114 both need to be loaded. */
115 static int load_asic(struct echoaudio *chip)
116 {
117         u32 control_reg;
118         int err;
119         short asic;
120 
121         if (chip->asic_loaded)
122                 return 0;
123 
124         mdelay(10);
125 
126         if (chip->device_id == DEVICE_ID_56361)
127                 asic = FW_MONA_361_1_ASIC48;
128         else
129                 asic = FW_MONA_301_1_ASIC48;
130 
131         err = load_asic_generic(chip, DSP_FNC_LOAD_MONA_PCI_CARD_ASIC, asic);
132         if (err < 0)
133                 return err;
134 
135         chip->asic_code = asic;
136         mdelay(10);
137 
138         /* Do the external one */
139         err = load_asic_generic(chip, DSP_FNC_LOAD_MONA_EXTERNAL_ASIC,
140                                 FW_MONA_2_ASIC);
141         if (err < 0)
142                 return err;
143 
144         mdelay(10);
145         err = check_asic_status(chip);
146 
147         /* Set up the control register if the load succeeded -
148            48 kHz, internal clock, S/PDIF RCA mode */
149         if (!err) {
150                 control_reg = GML_CONVERTER_ENABLE | GML_48KHZ;
151                 err = write_control_reg(chip, control_reg, true);
152         }
153 
154         return err;
155 }
156 
157 
158 
159 /* Depending on what digital mode you want, Mona needs different ASICs
160 loaded.  This function checks the ASIC needed for the new mode and sees
161 if it matches the one already loaded. */
162 static int switch_asic(struct echoaudio *chip, char double_speed)
163 {
164         int err;
165         short asic;
166 
167         /* Check the clock detect bits to see if this is
168         a single-speed clock or a double-speed clock; load
169         a new ASIC if necessary. */
170         if (chip->device_id == DEVICE_ID_56361) {
171                 if (double_speed)
172                         asic = FW_MONA_361_1_ASIC96;
173                 else
174                         asic = FW_MONA_361_1_ASIC48;
175         } else {
176                 if (double_speed)
177                         asic = FW_MONA_301_1_ASIC96;
178                 else
179                         asic = FW_MONA_301_1_ASIC48;
180         }
181 
182         if (asic != chip->asic_code) {
183                 /* Load the desired ASIC */
184                 err = load_asic_generic(chip, DSP_FNC_LOAD_MONA_PCI_CARD_ASIC,
185                                         asic);
186                 if (err < 0)
187                         return err;
188                 chip->asic_code = asic;
189         }
190 
191         return 0;
192 }
193 
194 
195 
196 static int set_sample_rate(struct echoaudio *chip, u32 rate)
197 {
198         u32 control_reg, clock;
199         short asic;
200         char force_write;
201 
202         /* Only set the clock for internal mode. */
203         if (chip->input_clock != ECHO_CLOCK_INTERNAL) {
204                 dev_dbg(chip->card->dev,
205                         "Cannot set sample rate - clock not set to CLK_CLOCKININTERNAL\n");
206                 /* Save the rate anyhow */
207                 chip->comm_page->sample_rate = cpu_to_le32(rate);
208                 chip->sample_rate = rate;
209                 return 0;
210         }
211 
212         /* Now, check to see if the required ASIC is loaded */
213         if (rate >= 88200) {
214                 if (chip->digital_mode == DIGITAL_MODE_ADAT)
215                         return -EINVAL;
216                 if (chip->device_id == DEVICE_ID_56361)
217                         asic = FW_MONA_361_1_ASIC96;
218                 else
219                         asic = FW_MONA_301_1_ASIC96;
220         } else {
221                 if (chip->device_id == DEVICE_ID_56361)
222                         asic = FW_MONA_361_1_ASIC48;
223                 else
224                         asic = FW_MONA_301_1_ASIC48;
225         }
226 
227         force_write = 0;
228         if (asic != chip->asic_code) {
229                 int err;
230                 /* Load the desired ASIC (load_asic_generic() can sleep) */
231                 spin_unlock_irq(&chip->lock);
232                 err = load_asic_generic(chip, DSP_FNC_LOAD_MONA_PCI_CARD_ASIC,
233                                         asic);
234                 spin_lock_irq(&chip->lock);
235 
236                 if (err < 0)
237                         return err;
238                 chip->asic_code = asic;
239                 force_write = 1;
240         }
241 
242         /* Compute the new control register value */
243         clock = 0;
244         control_reg = le32_to_cpu(chip->comm_page->control_register);
245         control_reg &= GML_CLOCK_CLEAR_MASK;
246         control_reg &= GML_SPDIF_RATE_CLEAR_MASK;
247 
248         switch (rate) {
249         case 96000:
250                 clock = GML_96KHZ;
251                 break;
252         case 88200:
253                 clock = GML_88KHZ;
254                 break;
255         case 48000:
256                 clock = GML_48KHZ | GML_SPDIF_SAMPLE_RATE1;
257                 break;
258         case 44100:
259                 clock = GML_44KHZ;
260                 /* Professional mode */
261                 if (control_reg & GML_SPDIF_PRO_MODE)
262                         clock |= GML_SPDIF_SAMPLE_RATE0;
263                 break;
264         case 32000:
265                 clock = GML_32KHZ | GML_SPDIF_SAMPLE_RATE0 |
266                         GML_SPDIF_SAMPLE_RATE1;
267                 break;
268         case 22050:
269                 clock = GML_22KHZ;
270                 break;
271         case 16000:
272                 clock = GML_16KHZ;
273                 break;
274         case 11025:
275                 clock = GML_11KHZ;
276                 break;
277         case 8000:
278                 clock = GML_8KHZ;
279                 break;
280         default:
281                 dev_err(chip->card->dev,
282                         "set_sample_rate: %d invalid!\n", rate);
283                 return -EINVAL;
284         }
285 
286         control_reg |= clock;
287 
288         chip->comm_page->sample_rate = cpu_to_le32(rate);       /* ignored by the DSP */
289         chip->sample_rate = rate;
290         dev_dbg(chip->card->dev,
291                 "set_sample_rate: %d clock %d\n", rate, clock);
292 
293         return write_control_reg(chip, control_reg, force_write);
294 }
295 
296 
297 
298 static int set_input_clock(struct echoaudio *chip, u16 clock)
299 {
300         u32 control_reg, clocks_from_dsp;
301         int err;
302 
303 
304         /* Prevent two simultaneous calls to switch_asic() */
305         if (atomic_read(&chip->opencount))
306                 return -EAGAIN;
307 
308         /* Mask off the clock select bits */
309         control_reg = le32_to_cpu(chip->comm_page->control_register) &
310                 GML_CLOCK_CLEAR_MASK;
311         clocks_from_dsp = le32_to_cpu(chip->comm_page->status_clocks);
312 
313         switch (clock) {
314         case ECHO_CLOCK_INTERNAL:
315                 chip->input_clock = ECHO_CLOCK_INTERNAL;
316                 return set_sample_rate(chip, chip->sample_rate);
317         case ECHO_CLOCK_SPDIF:
318                 if (chip->digital_mode == DIGITAL_MODE_ADAT)
319                         return -EAGAIN;
320                 spin_unlock_irq(&chip->lock);
321                 err = switch_asic(chip, clocks_from_dsp &
322                                   GML_CLOCK_DETECT_BIT_SPDIF96);
323                 spin_lock_irq(&chip->lock);
324                 if (err < 0)
325                         return err;
326                 control_reg |= GML_SPDIF_CLOCK;
327                 if (clocks_from_dsp & GML_CLOCK_DETECT_BIT_SPDIF96)
328                         control_reg |= GML_DOUBLE_SPEED_MODE;
329                 else
330                         control_reg &= ~GML_DOUBLE_SPEED_MODE;
331                 break;
332         case ECHO_CLOCK_WORD:
333                 spin_unlock_irq(&chip->lock);
334                 err = switch_asic(chip, clocks_from_dsp &
335                                   GML_CLOCK_DETECT_BIT_WORD96);
336                 spin_lock_irq(&chip->lock);
337                 if (err < 0)
338                         return err;
339                 control_reg |= GML_WORD_CLOCK;
340                 if (clocks_from_dsp & GML_CLOCK_DETECT_BIT_WORD96)
341                         control_reg |= GML_DOUBLE_SPEED_MODE;
342                 else
343                         control_reg &= ~GML_DOUBLE_SPEED_MODE;
344                 break;
345         case ECHO_CLOCK_ADAT:
346                 dev_dbg(chip->card->dev, "Set Mona clock to ADAT\n");
347                 if (chip->digital_mode != DIGITAL_MODE_ADAT)
348                         return -EAGAIN;
349                 control_reg |= GML_ADAT_CLOCK;
350                 control_reg &= ~GML_DOUBLE_SPEED_MODE;
351                 break;
352         default:
353                 dev_err(chip->card->dev,
354                         "Input clock 0x%x not supported for Mona\n", clock);
355                 return -EINVAL;
356         }
357 
358         chip->input_clock = clock;
359         return write_control_reg(chip, control_reg, true);
360 }
361 
362 
363 
364 static int dsp_set_digital_mode(struct echoaudio *chip, u8 mode)
365 {
366         u32 control_reg;
367         int err, incompatible_clock;
368 
369         /* Set clock to "internal" if it's not compatible with the new mode */
370         incompatible_clock = false;
371         switch (mode) {
372         case DIGITAL_MODE_SPDIF_OPTICAL:
373         case DIGITAL_MODE_SPDIF_RCA:
374                 if (chip->input_clock == ECHO_CLOCK_ADAT)
375                         incompatible_clock = true;
376                 break;
377         case DIGITAL_MODE_ADAT:
378                 if (chip->input_clock == ECHO_CLOCK_SPDIF)
379                         incompatible_clock = true;
380                 break;
381         default:
382                 dev_err(chip->card->dev,
383                         "Digital mode not supported: %d\n", mode);
384                 return -EINVAL;
385         }
386 
387         spin_lock_irq(&chip->lock);
388 
389         if (incompatible_clock) {       /* Switch to 48KHz, internal */
390                 chip->sample_rate = 48000;
391                 set_input_clock(chip, ECHO_CLOCK_INTERNAL);
392         }
393 
394         /* Clear the current digital mode */
395         control_reg = le32_to_cpu(chip->comm_page->control_register);
396         control_reg &= GML_DIGITAL_MODE_CLEAR_MASK;
397 
398         /* Tweak the control reg */
399         switch (mode) {
400         case DIGITAL_MODE_SPDIF_OPTICAL:
401                 control_reg |= GML_SPDIF_OPTICAL_MODE;
402                 break;
403         case DIGITAL_MODE_SPDIF_RCA:
404                 /* GML_SPDIF_OPTICAL_MODE bit cleared */
405                 break;
406         case DIGITAL_MODE_ADAT:
407                 /* If the current ASIC is the 96KHz ASIC, switch the ASIC
408                    and set to 48 KHz */
409                 if (chip->asic_code == FW_MONA_361_1_ASIC96 ||
410                     chip->asic_code == FW_MONA_301_1_ASIC96) {
411                         set_sample_rate(chip, 48000);
412                 }
413                 control_reg |= GML_ADAT_MODE;
414                 control_reg &= ~GML_DOUBLE_SPEED_MODE;
415                 break;
416         }
417 
418         err = write_control_reg(chip, control_reg, false);
419         spin_unlock_irq(&chip->lock);
420         if (err < 0)
421                 return err;
422         chip->digital_mode = mode;
423 
424         dev_dbg(chip->card->dev, "set_digital_mode to %d\n", mode);
425         return incompatible_clock;
426 }
427 

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