1 /****************************************************************************
3 Copyright Echo Digital Audio Corporation (c) 1998 - 2004
7 This file is part of Echo Digital Audio's generic driver library.
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
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.
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,
24 *************************************************************************
26 Translation from C++ and adaptation for use in ALSA-Driver
27 were made by Giuliano Pochini <pochini@shiny.it>
29 ****************************************************************************/
33 /* These functions are common for all "3G" cards */
36 static int check_asic_status(struct echoaudio *chip)
40 if (wait_handshake(chip))
43 chip->comm_page->ext_box_status = cpu_to_le32(E3G_ASIC_NOT_LOADED);
44 chip->asic_loaded = false;
45 clear_handshake(chip);
46 send_vector(chip, DSP_VC_TEST_ASIC);
48 if (wait_handshake(chip)) {
49 chip->dsp_code = NULL;
53 box_status = le32_to_cpu(chip->comm_page->ext_box_status);
54 dev_dbg(chip->card->dev, "box_status=%x\n", box_status);
55 if (box_status == E3G_ASIC_NOT_LOADED)
58 chip->asic_loaded = true;
59 return box_status & E3G_BOX_TYPE_MASK;
64 static inline u32 get_frq_reg(struct echoaudio *chip)
66 return le32_to_cpu(chip->comm_page->e3g_frq_register);
71 /* Most configuration of 3G cards is accomplished by writing the control
72 register. write_control_reg sends the new control register value to the DSP. */
73 static int write_control_reg(struct echoaudio *chip, u32 ctl, u32 frq,
76 __le32 ctl_reg, frq_reg;
78 if (wait_handshake(chip))
81 dev_dbg(chip->card->dev,
82 "WriteControlReg: Setting 0x%x, 0x%x\n", ctl, frq);
84 ctl_reg = cpu_to_le32(ctl);
85 frq_reg = cpu_to_le32(frq);
87 if (ctl_reg != chip->comm_page->control_register ||
88 frq_reg != chip->comm_page->e3g_frq_register || force) {
89 chip->comm_page->e3g_frq_register = frq_reg;
90 chip->comm_page->control_register = ctl_reg;
91 clear_handshake(chip);
92 return send_vector(chip, DSP_VC_WRITE_CONTROL_REG);
95 dev_dbg(chip->card->dev, "WriteControlReg: not written, no change\n");
101 /* Set the digital mode - currently for Gina24, Layla24, Mona, 3G */
102 static int set_digital_mode(struct echoaudio *chip, u8 mode)
107 /* All audio channels must be closed before changing the digital mode */
108 if (snd_BUG_ON(chip->pipe_alloc_mask))
111 if (snd_BUG_ON(!(chip->digital_modes & (1 << mode))))
114 previous_mode = chip->digital_mode;
115 err = dsp_set_digital_mode(chip, mode);
117 /* If we successfully changed the digital mode from or to ADAT,
118 * then make sure all output, input and monitor levels are
119 * updated by the DSP comm object. */
120 if (err >= 0 && previous_mode != mode &&
121 (previous_mode == DIGITAL_MODE_ADAT || mode == DIGITAL_MODE_ADAT)) {
122 spin_lock_irq(&chip->lock);
123 for (o = 0; o < num_busses_out(chip); o++)
124 for (i = 0; i < num_busses_in(chip); i++)
125 set_monitor_gain(chip, o, i,
126 chip->monitor_gain[o][i]);
128 #ifdef ECHOCARD_HAS_INPUT_GAIN
129 for (i = 0; i < num_busses_in(chip); i++)
130 set_input_gain(chip, i, chip->input_gain[i]);
131 update_input_line_level(chip);
134 for (o = 0; o < num_busses_out(chip); o++)
135 set_output_gain(chip, o, chip->output_gain[o]);
136 update_output_line_level(chip);
137 spin_unlock_irq(&chip->lock);
145 static u32 set_spdif_bits(struct echoaudio *chip, u32 control_reg, u32 rate)
147 control_reg &= E3G_SPDIF_FORMAT_CLEAR_MASK;
151 control_reg |= E3G_SPDIF_SAMPLE_RATE0 | E3G_SPDIF_SAMPLE_RATE1;
154 if (chip->professional_spdif)
155 control_reg |= E3G_SPDIF_SAMPLE_RATE0;
158 control_reg |= E3G_SPDIF_SAMPLE_RATE1;
162 if (chip->professional_spdif)
163 control_reg |= E3G_SPDIF_PRO_MODE;
165 if (chip->non_audio_spdif)
166 control_reg |= E3G_SPDIF_NOT_AUDIO;
168 control_reg |= E3G_SPDIF_24_BIT | E3G_SPDIF_TWO_CHANNEL |
169 E3G_SPDIF_COPY_PERMIT;
176 /* Set the S/PDIF output format */
177 static int set_professional_spdif(struct echoaudio *chip, char prof)
181 control_reg = le32_to_cpu(chip->comm_page->control_register);
182 chip->professional_spdif = prof;
183 control_reg = set_spdif_bits(chip, control_reg, chip->sample_rate);
184 return write_control_reg(chip, control_reg, get_frq_reg(chip), 0);
189 /* detect_input_clocks() returns a bitmask consisting of all the input clocks
190 currently connected to the hardware; this changes as the user connects and
191 disconnects clock inputs. You should use this information to determine which
192 clocks the user is allowed to select. */
193 static u32 detect_input_clocks(const struct echoaudio *chip)
195 u32 clocks_from_dsp, clock_bits;
197 /* Map the DSP clock detect bits to the generic driver clock
199 clocks_from_dsp = le32_to_cpu(chip->comm_page->status_clocks);
201 clock_bits = ECHO_CLOCK_BIT_INTERNAL;
203 if (clocks_from_dsp & E3G_CLOCK_DETECT_BIT_WORD)
204 clock_bits |= ECHO_CLOCK_BIT_WORD;
206 switch(chip->digital_mode) {
207 case DIGITAL_MODE_SPDIF_RCA:
208 case DIGITAL_MODE_SPDIF_OPTICAL:
209 if (clocks_from_dsp & E3G_CLOCK_DETECT_BIT_SPDIF)
210 clock_bits |= ECHO_CLOCK_BIT_SPDIF;
212 case DIGITAL_MODE_ADAT:
213 if (clocks_from_dsp & E3G_CLOCK_DETECT_BIT_ADAT)
214 clock_bits |= ECHO_CLOCK_BIT_ADAT;
223 static int load_asic(struct echoaudio *chip)
227 if (chip->asic_loaded)
230 /* Give the DSP a few milliseconds to settle down */
233 err = load_asic_generic(chip, DSP_FNC_LOAD_3G_ASIC, FW_3G_ASIC);
237 chip->asic_code = FW_3G_ASIC;
239 /* Now give the new ASIC some time to set up */
241 /* See if it worked */
242 box_type = check_asic_status(chip);
244 /* Set up the control register if the load succeeded -
245 * 48 kHz, internal clock, S/PDIF RCA mode */
247 err = write_control_reg(chip, E3G_48KHZ,
248 E3G_FREQ_REG_DEFAULT, true);
258 static int set_sample_rate(struct echoaudio *chip, u32 rate)
260 u32 control_reg, clock, base_rate, frq_reg;
262 /* Only set the clock for internal mode. */
263 if (chip->input_clock != ECHO_CLOCK_INTERNAL) {
264 dev_warn(chip->card->dev,
265 "Cannot set sample rate - clock not set to CLK_CLOCKININTERNAL\n");
266 /* Save the rate anyhow */
267 chip->comm_page->sample_rate = cpu_to_le32(rate);
268 chip->sample_rate = rate;
269 set_input_clock(chip, chip->input_clock);
273 if (snd_BUG_ON(rate >= 50000 &&
274 chip->digital_mode == DIGITAL_MODE_ADAT))
277 control_reg = le32_to_cpu(chip->comm_page->control_register);
278 control_reg &= E3G_CLOCK_CLEAR_MASK;
297 clock = E3G_CONTINUOUS_CLOCK;
299 clock |= E3G_DOUBLE_SPEED_MODE;
303 control_reg |= clock;
304 control_reg = set_spdif_bits(chip, control_reg, rate);
307 if (base_rate > 50000)
309 if (base_rate < 32000)
312 frq_reg = E3G_MAGIC_NUMBER / base_rate - 2;
313 if (frq_reg > E3G_FREQ_REG_MAX)
314 frq_reg = E3G_FREQ_REG_MAX;
316 chip->comm_page->sample_rate = cpu_to_le32(rate); /* ignored by the DSP */
317 chip->sample_rate = rate;
318 dev_dbg(chip->card->dev,
319 "SetSampleRate: %d clock %x\n", rate, control_reg);
321 /* Tell the DSP about it - DSP reads both control reg & freq reg */
322 return write_control_reg(chip, control_reg, frq_reg, 0);
327 /* Set the sample clock source to internal, S/PDIF, ADAT */
328 static int set_input_clock(struct echoaudio *chip, u16 clock)
330 u32 control_reg, clocks_from_dsp;
333 /* Mask off the clock select bits */
334 control_reg = le32_to_cpu(chip->comm_page->control_register) &
335 E3G_CLOCK_CLEAR_MASK;
336 clocks_from_dsp = le32_to_cpu(chip->comm_page->status_clocks);
339 case ECHO_CLOCK_INTERNAL:
340 chip->input_clock = ECHO_CLOCK_INTERNAL;
341 return set_sample_rate(chip, chip->sample_rate);
342 case ECHO_CLOCK_SPDIF:
343 if (chip->digital_mode == DIGITAL_MODE_ADAT)
345 control_reg |= E3G_SPDIF_CLOCK;
346 if (clocks_from_dsp & E3G_CLOCK_DETECT_BIT_SPDIF96)
347 control_reg |= E3G_DOUBLE_SPEED_MODE;
349 control_reg &= ~E3G_DOUBLE_SPEED_MODE;
351 case ECHO_CLOCK_ADAT:
352 if (chip->digital_mode != DIGITAL_MODE_ADAT)
354 control_reg |= E3G_ADAT_CLOCK;
355 control_reg &= ~E3G_DOUBLE_SPEED_MODE;
357 case ECHO_CLOCK_WORD:
358 control_reg |= E3G_WORD_CLOCK;
359 if (clocks_from_dsp & E3G_CLOCK_DETECT_BIT_WORD96)
360 control_reg |= E3G_DOUBLE_SPEED_MODE;
362 control_reg &= ~E3G_DOUBLE_SPEED_MODE;
365 dev_err(chip->card->dev,
366 "Input clock 0x%x not supported for Echo3G\n", clock);
370 chip->input_clock = clock;
371 return write_control_reg(chip, control_reg, get_frq_reg(chip), 1);
376 static int dsp_set_digital_mode(struct echoaudio *chip, u8 mode)
379 int err, incompatible_clock;
381 /* Set clock to "internal" if it's not compatible with the new mode */
382 incompatible_clock = false;
384 case DIGITAL_MODE_SPDIF_OPTICAL:
385 case DIGITAL_MODE_SPDIF_RCA:
386 if (chip->input_clock == ECHO_CLOCK_ADAT)
387 incompatible_clock = true;
389 case DIGITAL_MODE_ADAT:
390 if (chip->input_clock == ECHO_CLOCK_SPDIF)
391 incompatible_clock = true;
394 dev_err(chip->card->dev,
395 "Digital mode not supported: %d\n", mode);
399 spin_lock_irq(&chip->lock);
401 if (incompatible_clock) {
402 chip->sample_rate = 48000;
403 set_input_clock(chip, ECHO_CLOCK_INTERNAL);
406 /* Clear the current digital mode */
407 control_reg = le32_to_cpu(chip->comm_page->control_register);
408 control_reg &= E3G_DIGITAL_MODE_CLEAR_MASK;
410 /* Tweak the control reg */
412 case DIGITAL_MODE_SPDIF_OPTICAL:
413 control_reg |= E3G_SPDIF_OPTICAL_MODE;
415 case DIGITAL_MODE_SPDIF_RCA:
416 /* E3G_SPDIF_OPTICAL_MODE bit cleared */
418 case DIGITAL_MODE_ADAT:
419 control_reg |= E3G_ADAT_MODE;
420 control_reg &= ~E3G_DOUBLE_SPEED_MODE; /* @@ useless */
424 err = write_control_reg(chip, control_reg, get_frq_reg(chip), 1);
425 spin_unlock_irq(&chip->lock);
428 chip->digital_mode = mode;
430 dev_dbg(chip->card->dev, "set_digital_mode(%d)\n", chip->digital_mode);
431 return incompatible_clock;