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 DE_INIT(("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 if (wait_handshake(chip))
79 DE_ACT(("WriteControlReg: Setting 0x%x, 0x%x\n", ctl, frq));
81 ctl = cpu_to_le32(ctl);
82 frq = cpu_to_le32(frq);
84 if (ctl != chip->comm_page->control_register ||
85 frq != chip->comm_page->e3g_frq_register || force) {
86 chip->comm_page->e3g_frq_register = frq;
87 chip->comm_page->control_register = ctl;
88 clear_handshake(chip);
89 return send_vector(chip, DSP_VC_WRITE_CONTROL_REG);
92 DE_ACT(("WriteControlReg: not written, no change\n"));
98 /* Set the digital mode - currently for Gina24, Layla24, Mona, 3G */
99 static int set_digital_mode(struct echoaudio *chip, u8 mode)
104 /* All audio channels must be closed before changing the digital mode */
105 if (snd_BUG_ON(chip->pipe_alloc_mask))
108 if (snd_BUG_ON(!(chip->digital_modes & (1 << mode))))
111 previous_mode = chip->digital_mode;
112 err = dsp_set_digital_mode(chip, mode);
114 /* If we successfully changed the digital mode from or to ADAT,
115 * then make sure all output, input and monitor levels are
116 * updated by the DSP comm object. */
117 if (err >= 0 && previous_mode != mode &&
118 (previous_mode == DIGITAL_MODE_ADAT || mode == DIGITAL_MODE_ADAT)) {
119 spin_lock_irq(&chip->lock);
120 for (o = 0; o < num_busses_out(chip); o++)
121 for (i = 0; i < num_busses_in(chip); i++)
122 set_monitor_gain(chip, o, i,
123 chip->monitor_gain[o][i]);
125 #ifdef ECHOCARD_HAS_INPUT_GAIN
126 for (i = 0; i < num_busses_in(chip); i++)
127 set_input_gain(chip, i, chip->input_gain[i]);
128 update_input_line_level(chip);
131 for (o = 0; o < num_busses_out(chip); o++)
132 set_output_gain(chip, o, chip->output_gain[o]);
133 update_output_line_level(chip);
134 spin_unlock_irq(&chip->lock);
142 static u32 set_spdif_bits(struct echoaudio *chip, u32 control_reg, u32 rate)
144 control_reg &= E3G_SPDIF_FORMAT_CLEAR_MASK;
148 control_reg |= E3G_SPDIF_SAMPLE_RATE0 | E3G_SPDIF_SAMPLE_RATE1;
151 if (chip->professional_spdif)
152 control_reg |= E3G_SPDIF_SAMPLE_RATE0;
155 control_reg |= E3G_SPDIF_SAMPLE_RATE1;
159 if (chip->professional_spdif)
160 control_reg |= E3G_SPDIF_PRO_MODE;
162 if (chip->non_audio_spdif)
163 control_reg |= E3G_SPDIF_NOT_AUDIO;
165 control_reg |= E3G_SPDIF_24_BIT | E3G_SPDIF_TWO_CHANNEL |
166 E3G_SPDIF_COPY_PERMIT;
173 /* Set the S/PDIF output format */
174 static int set_professional_spdif(struct echoaudio *chip, char prof)
178 control_reg = le32_to_cpu(chip->comm_page->control_register);
179 chip->professional_spdif = prof;
180 control_reg = set_spdif_bits(chip, control_reg, chip->sample_rate);
181 return write_control_reg(chip, control_reg, get_frq_reg(chip), 0);
186 /* detect_input_clocks() returns a bitmask consisting of all the input clocks
187 currently connected to the hardware; this changes as the user connects and
188 disconnects clock inputs. You should use this information to determine which
189 clocks the user is allowed to select. */
190 static u32 detect_input_clocks(const struct echoaudio *chip)
192 u32 clocks_from_dsp, clock_bits;
194 /* Map the DSP clock detect bits to the generic driver clock
196 clocks_from_dsp = le32_to_cpu(chip->comm_page->status_clocks);
198 clock_bits = ECHO_CLOCK_BIT_INTERNAL;
200 if (clocks_from_dsp & E3G_CLOCK_DETECT_BIT_WORD)
201 clock_bits |= ECHO_CLOCK_BIT_WORD;
203 switch(chip->digital_mode) {
204 case DIGITAL_MODE_SPDIF_RCA:
205 case DIGITAL_MODE_SPDIF_OPTICAL:
206 if (clocks_from_dsp & E3G_CLOCK_DETECT_BIT_SPDIF)
207 clock_bits |= ECHO_CLOCK_BIT_SPDIF;
209 case DIGITAL_MODE_ADAT:
210 if (clocks_from_dsp & E3G_CLOCK_DETECT_BIT_ADAT)
211 clock_bits |= ECHO_CLOCK_BIT_ADAT;
220 static int load_asic(struct echoaudio *chip)
224 if (chip->asic_loaded)
227 /* Give the DSP a few milliseconds to settle down */
230 err = load_asic_generic(chip, DSP_FNC_LOAD_3G_ASIC,
231 &card_fw[FW_3G_ASIC]);
235 chip->asic_code = &card_fw[FW_3G_ASIC];
237 /* Now give the new ASIC some time to set up */
239 /* See if it worked */
240 box_type = check_asic_status(chip);
242 /* Set up the control register if the load succeeded -
243 * 48 kHz, internal clock, S/PDIF RCA mode */
245 err = write_control_reg(chip, E3G_48KHZ,
246 E3G_FREQ_REG_DEFAULT, TRUE);
256 static int set_sample_rate(struct echoaudio *chip, u32 rate)
258 u32 control_reg, clock, base_rate, frq_reg;
260 /* Only set the clock for internal mode. */
261 if (chip->input_clock != ECHO_CLOCK_INTERNAL) {
262 DE_ACT(("set_sample_rate: Cannot set sample rate - "
263 "clock not set to CLK_CLOCKININTERNAL\n"));
264 /* Save the rate anyhow */
265 chip->comm_page->sample_rate = cpu_to_le32(rate);
266 chip->sample_rate = rate;
267 set_input_clock(chip, chip->input_clock);
271 if (snd_BUG_ON(rate >= 50000 &&
272 chip->digital_mode == DIGITAL_MODE_ADAT))
276 control_reg = le32_to_cpu(chip->comm_page->control_register);
277 control_reg &= E3G_CLOCK_CLEAR_MASK;
296 clock = E3G_CONTINUOUS_CLOCK;
298 clock |= E3G_DOUBLE_SPEED_MODE;
302 control_reg |= clock;
303 control_reg = set_spdif_bits(chip, control_reg, rate);
306 if (base_rate > 50000)
308 if (base_rate < 32000)
311 frq_reg = E3G_MAGIC_NUMBER / base_rate - 2;
312 if (frq_reg > E3G_FREQ_REG_MAX)
313 frq_reg = E3G_FREQ_REG_MAX;
315 chip->comm_page->sample_rate = cpu_to_le32(rate); /* ignored by the DSP */
316 chip->sample_rate = rate;
317 DE_ACT(("SetSampleRate: %d clock %x\n", rate, control_reg));
319 /* Tell the DSP about it - DSP reads both control reg & freq reg */
320 return write_control_reg(chip, control_reg, frq_reg, 0);
325 /* Set the sample clock source to internal, S/PDIF, ADAT */
326 static int set_input_clock(struct echoaudio *chip, u16 clock)
328 u32 control_reg, clocks_from_dsp;
330 DE_ACT(("set_input_clock:\n"));
332 /* Mask off the clock select bits */
333 control_reg = le32_to_cpu(chip->comm_page->control_register) &
334 E3G_CLOCK_CLEAR_MASK;
335 clocks_from_dsp = le32_to_cpu(chip->comm_page->status_clocks);
338 case ECHO_CLOCK_INTERNAL:
339 DE_ACT(("Set Echo3G clock to INTERNAL\n"));
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 DE_ACT(("Set Echo3G clock to SPDIF\n"));
346 control_reg |= E3G_SPDIF_CLOCK;
347 if (clocks_from_dsp & E3G_CLOCK_DETECT_BIT_SPDIF96)
348 control_reg |= E3G_DOUBLE_SPEED_MODE;
350 control_reg &= ~E3G_DOUBLE_SPEED_MODE;
352 case ECHO_CLOCK_ADAT:
353 if (chip->digital_mode != DIGITAL_MODE_ADAT)
355 DE_ACT(("Set Echo3G clock to ADAT\n"));
356 control_reg |= E3G_ADAT_CLOCK;
357 control_reg &= ~E3G_DOUBLE_SPEED_MODE;
359 case ECHO_CLOCK_WORD:
360 DE_ACT(("Set Echo3G clock to WORD\n"));
361 control_reg |= E3G_WORD_CLOCK;
362 if (clocks_from_dsp & E3G_CLOCK_DETECT_BIT_WORD96)
363 control_reg |= E3G_DOUBLE_SPEED_MODE;
365 control_reg &= ~E3G_DOUBLE_SPEED_MODE;
368 DE_ACT(("Input clock 0x%x not supported for Echo3G\n", clock));
372 chip->input_clock = clock;
373 return write_control_reg(chip, control_reg, get_frq_reg(chip), 1);
378 static int dsp_set_digital_mode(struct echoaudio *chip, u8 mode)
381 int err, incompatible_clock;
383 /* Set clock to "internal" if it's not compatible with the new mode */
384 incompatible_clock = FALSE;
386 case DIGITAL_MODE_SPDIF_OPTICAL:
387 case DIGITAL_MODE_SPDIF_RCA:
388 if (chip->input_clock == ECHO_CLOCK_ADAT)
389 incompatible_clock = TRUE;
391 case DIGITAL_MODE_ADAT:
392 if (chip->input_clock == ECHO_CLOCK_SPDIF)
393 incompatible_clock = TRUE;
396 DE_ACT(("Digital mode not supported: %d\n", mode));
400 spin_lock_irq(&chip->lock);
402 if (incompatible_clock) {
403 chip->sample_rate = 48000;
404 set_input_clock(chip, ECHO_CLOCK_INTERNAL);
407 /* Clear the current digital mode */
408 control_reg = le32_to_cpu(chip->comm_page->control_register);
409 control_reg &= E3G_DIGITAL_MODE_CLEAR_MASK;
411 /* Tweak the control reg */
413 case DIGITAL_MODE_SPDIF_OPTICAL:
414 control_reg |= E3G_SPDIF_OPTICAL_MODE;
416 case DIGITAL_MODE_SPDIF_RCA:
417 /* E3G_SPDIF_OPTICAL_MODE bit cleared */
419 case DIGITAL_MODE_ADAT:
420 control_reg |= E3G_ADAT_MODE;
421 control_reg &= ~E3G_DOUBLE_SPEED_MODE; /* @@ useless */
425 err = write_control_reg(chip, control_reg, get_frq_reg(chip), 1);
426 spin_unlock_irq(&chip->lock);
429 chip->digital_mode = mode;
431 DE_ACT(("set_digital_mode(%d)\n", chip->digital_mode));
432 return incompatible_clock;