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 =
44 __constant_cpu_to_le32(E3G_ASIC_NOT_LOADED);
45 chip->asic_loaded = FALSE;
46 clear_handshake(chip);
47 send_vector(chip, DSP_VC_TEST_ASIC);
49 if (wait_handshake(chip)) {
50 chip->dsp_code = NULL;
54 box_status = le32_to_cpu(chip->comm_page->ext_box_status);
55 DE_INIT(("box_status=%x\n", box_status));
56 if (box_status == E3G_ASIC_NOT_LOADED)
59 chip->asic_loaded = TRUE;
60 return box_status & E3G_BOX_TYPE_MASK;
65 static inline u32 get_frq_reg(struct echoaudio *chip)
67 return le32_to_cpu(chip->comm_page->e3g_frq_register);
72 /* Most configuration of 3G cards is accomplished by writing the control
73 register. write_control_reg sends the new control register value to the DSP. */
74 static int write_control_reg(struct echoaudio *chip, u32 ctl, u32 frq,
77 if (wait_handshake(chip))
80 DE_ACT(("WriteControlReg: Setting 0x%x, 0x%x\n", ctl, frq));
82 ctl = cpu_to_le32(ctl);
83 frq = cpu_to_le32(frq);
85 if (ctl != chip->comm_page->control_register ||
86 frq != chip->comm_page->e3g_frq_register || force) {
87 chip->comm_page->e3g_frq_register = frq;
88 chip->comm_page->control_register = ctl;
89 clear_handshake(chip);
90 return send_vector(chip, DSP_VC_WRITE_CONTROL_REG);
93 DE_ACT(("WriteControlReg: not written, no change\n"));
99 /* Set the digital mode - currently for Gina24, Layla24, Mona, 3G */
100 static int set_digital_mode(struct echoaudio *chip, u8 mode)
105 /* All audio channels must be closed before changing the digital mode */
106 snd_assert(!chip->pipe_alloc_mask, return -EAGAIN);
108 snd_assert(chip->digital_modes & (1 << mode), return -EINVAL);
110 previous_mode = chip->digital_mode;
111 err = dsp_set_digital_mode(chip, mode);
113 /* If we successfully changed the digital mode from or to ADAT,
114 * then make sure all output, input and monitor levels are
115 * updated by the DSP comm object. */
116 if (err >= 0 && previous_mode != mode &&
117 (previous_mode == DIGITAL_MODE_ADAT || mode == DIGITAL_MODE_ADAT)) {
118 spin_lock_irq(&chip->lock);
119 for (o = 0; o < num_busses_out(chip); o++)
120 for (i = 0; i < num_busses_in(chip); i++)
121 set_monitor_gain(chip, o, i,
122 chip->monitor_gain[o][i]);
124 #ifdef ECHOCARD_HAS_INPUT_GAIN
125 for (i = 0; i < num_busses_in(chip); i++)
126 set_input_gain(chip, i, chip->input_gain[i]);
127 update_input_line_level(chip);
130 for (o = 0; o < num_busses_out(chip); o++)
131 set_output_gain(chip, o, chip->output_gain[o]);
132 update_output_line_level(chip);
133 spin_unlock_irq(&chip->lock);
141 static u32 set_spdif_bits(struct echoaudio *chip, u32 control_reg, u32 rate)
143 control_reg &= E3G_SPDIF_FORMAT_CLEAR_MASK;
147 control_reg |= E3G_SPDIF_SAMPLE_RATE0 | E3G_SPDIF_SAMPLE_RATE1;
150 if (chip->professional_spdif)
151 control_reg |= E3G_SPDIF_SAMPLE_RATE0;
154 control_reg |= E3G_SPDIF_SAMPLE_RATE1;
158 if (chip->professional_spdif)
159 control_reg |= E3G_SPDIF_PRO_MODE;
161 if (chip->non_audio_spdif)
162 control_reg |= E3G_SPDIF_NOT_AUDIO;
164 control_reg |= E3G_SPDIF_24_BIT | E3G_SPDIF_TWO_CHANNEL |
165 E3G_SPDIF_COPY_PERMIT;
172 /* Set the S/PDIF output format */
173 static int set_professional_spdif(struct echoaudio *chip, char prof)
177 control_reg = le32_to_cpu(chip->comm_page->control_register);
178 chip->professional_spdif = prof;
179 control_reg = set_spdif_bits(chip, control_reg, chip->sample_rate);
180 return write_control_reg(chip, control_reg, get_frq_reg(chip), 0);
185 /* detect_input_clocks() returns a bitmask consisting of all the input clocks
186 currently connected to the hardware; this changes as the user connects and
187 disconnects clock inputs. You should use this information to determine which
188 clocks the user is allowed to select. */
189 static u32 detect_input_clocks(const struct echoaudio *chip)
191 u32 clocks_from_dsp, clock_bits;
193 /* Map the DSP clock detect bits to the generic driver clock
195 clocks_from_dsp = le32_to_cpu(chip->comm_page->status_clocks);
197 clock_bits = ECHO_CLOCK_BIT_INTERNAL;
199 if (clocks_from_dsp & E3G_CLOCK_DETECT_BIT_WORD)
200 clock_bits |= ECHO_CLOCK_BIT_WORD;
202 switch(chip->digital_mode) {
203 case DIGITAL_MODE_SPDIF_RCA:
204 case DIGITAL_MODE_SPDIF_OPTICAL:
205 if (clocks_from_dsp & E3G_CLOCK_DETECT_BIT_SPDIF)
206 clock_bits |= ECHO_CLOCK_BIT_SPDIF;
208 case DIGITAL_MODE_ADAT:
209 if (clocks_from_dsp & E3G_CLOCK_DETECT_BIT_ADAT)
210 clock_bits |= ECHO_CLOCK_BIT_ADAT;
219 static int load_asic(struct echoaudio *chip)
223 if (chip->asic_loaded)
226 /* Give the DSP a few milliseconds to settle down */
229 err = load_asic_generic(chip, DSP_FNC_LOAD_3G_ASIC,
230 &card_fw[FW_3G_ASIC]);
234 chip->asic_code = &card_fw[FW_3G_ASIC];
236 /* Now give the new ASIC a little time to set up */
238 /* See if it worked */
239 box_type = check_asic_status(chip);
241 /* Set up the control register if the load succeeded -
242 * 48 kHz, internal clock, S/PDIF RCA mode */
244 err = write_control_reg(chip, E3G_48KHZ,
245 E3G_FREQ_REG_DEFAULT, TRUE);
255 static int set_sample_rate(struct echoaudio *chip, u32 rate)
257 u32 control_reg, clock, base_rate, frq_reg;
259 /* Only set the clock for internal mode. */
260 if (chip->input_clock != ECHO_CLOCK_INTERNAL) {
261 DE_ACT(("set_sample_rate: Cannot set sample rate - "
262 "clock not set to CLK_CLOCKININTERNAL\n"));
263 /* Save the rate anyhow */
264 chip->comm_page->sample_rate = cpu_to_le32(rate);
265 chip->sample_rate = rate;
266 set_input_clock(chip, chip->input_clock);
270 snd_assert(rate < 50000 || chip->digital_mode != DIGITAL_MODE_ADAT,
274 control_reg = le32_to_cpu(chip->comm_page->control_register);
275 control_reg &= E3G_CLOCK_CLEAR_MASK;
294 clock = E3G_CONTINUOUS_CLOCK;
296 clock |= E3G_DOUBLE_SPEED_MODE;
300 control_reg |= clock;
301 control_reg = set_spdif_bits(chip, control_reg, rate);
304 if (base_rate > 50000)
306 if (base_rate < 32000)
309 frq_reg = E3G_MAGIC_NUMBER / base_rate - 2;
310 if (frq_reg > E3G_FREQ_REG_MAX)
311 frq_reg = E3G_FREQ_REG_MAX;
313 chip->comm_page->sample_rate = cpu_to_le32(rate); /* ignored by the DSP */
314 chip->sample_rate = rate;
315 DE_ACT(("SetSampleRate: %d clock %x\n", rate, control_reg));
317 /* Tell the DSP about it - DSP reads both control reg & freq reg */
318 return write_control_reg(chip, control_reg, frq_reg, 0);
323 /* Set the sample clock source to internal, S/PDIF, ADAT */
324 static int set_input_clock(struct echoaudio *chip, u16 clock)
326 u32 control_reg, clocks_from_dsp;
328 DE_ACT(("set_input_clock:\n"));
330 /* Mask off the clock select bits */
331 control_reg = le32_to_cpu(chip->comm_page->control_register) &
332 E3G_CLOCK_CLEAR_MASK;
333 clocks_from_dsp = le32_to_cpu(chip->comm_page->status_clocks);
336 case ECHO_CLOCK_INTERNAL:
337 DE_ACT(("Set Echo3G clock to INTERNAL\n"));
338 chip->input_clock = ECHO_CLOCK_INTERNAL;
339 return set_sample_rate(chip, chip->sample_rate);
340 case ECHO_CLOCK_SPDIF:
341 if (chip->digital_mode == DIGITAL_MODE_ADAT)
343 DE_ACT(("Set Echo3G clock to SPDIF\n"));
344 control_reg |= E3G_SPDIF_CLOCK;
345 if (clocks_from_dsp & E3G_CLOCK_DETECT_BIT_SPDIF96)
346 control_reg |= E3G_DOUBLE_SPEED_MODE;
348 control_reg &= ~E3G_DOUBLE_SPEED_MODE;
350 case ECHO_CLOCK_ADAT:
351 if (chip->digital_mode != DIGITAL_MODE_ADAT)
353 DE_ACT(("Set Echo3G clock to ADAT\n"));
354 control_reg |= E3G_ADAT_CLOCK;
355 control_reg &= ~E3G_DOUBLE_SPEED_MODE;
357 case ECHO_CLOCK_WORD:
358 DE_ACT(("Set Echo3G clock to WORD\n"));
359 control_reg |= E3G_WORD_CLOCK;
360 if (clocks_from_dsp & E3G_CLOCK_DETECT_BIT_WORD96)
361 control_reg |= E3G_DOUBLE_SPEED_MODE;
363 control_reg &= ~E3G_DOUBLE_SPEED_MODE;
366 DE_ACT(("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 DE_ACT(("Digital mode not supported: %d\n", mode));
398 spin_lock_irq(&chip->lock);
400 if (incompatible_clock) {
401 chip->sample_rate = 48000;
402 set_input_clock(chip, ECHO_CLOCK_INTERNAL);
405 /* Clear the current digital mode */
406 control_reg = le32_to_cpu(chip->comm_page->control_register);
407 control_reg &= E3G_DIGITAL_MODE_CLEAR_MASK;
409 /* Tweak the control reg */
411 case DIGITAL_MODE_SPDIF_OPTICAL:
412 control_reg |= E3G_SPDIF_OPTICAL_MODE;
414 case DIGITAL_MODE_SPDIF_RCA:
415 /* E3G_SPDIF_OPTICAL_MODE bit cleared */
417 case DIGITAL_MODE_ADAT:
418 control_reg |= E3G_ADAT_MODE;
419 control_reg &= ~E3G_DOUBLE_SPEED_MODE; /* @@ useless */
423 err = write_control_reg(chip, control_reg, get_frq_reg(chip), 1);
424 spin_unlock_irq(&chip->lock);
427 chip->digital_mode = mode;
429 DE_ACT(("set_digital_mode(%d)\n", chip->digital_mode));
430 return incompatible_clock;