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 Foundation. 12 13 This program is distributed in the hope that it will be useful, 14 but WITHOUT ANY WARRANTY; without even the implied warranty of 15 MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the 16 GNU General Public License for more details. 17 18 You should have received a copy of the GNU General Public License 19 along with this program; if not, write to the Free Software 20 Foundation, Inc., 59 Temple Place - Suite 330, Boston, 21 MA 02111-1307, USA. 22 23 ************************************************************************* 24 25 Translation from C++ and adaptation for use in ALSA-Driver 26 were made by Giuliano Pochini <pochini@shiny.it> 27 28****************************************************************************/ 29 30 31static int write_control_reg(struct echoaudio *chip, u32 value, char force); 32static int set_input_clock(struct echoaudio *chip, u16 clock); 33static int set_professional_spdif(struct echoaudio *chip, char prof); 34static int set_digital_mode(struct echoaudio *chip, u8 mode); 35static int load_asic_generic(struct echoaudio *chip, u32 cmd, short asic); 36static int check_asic_status(struct echoaudio *chip); 37 38 39static 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) != LAYLA24)) 44 return -ENODEV; 45 46 if ((err = init_dsp_comm_page(chip))) { 47 dev_err(chip->card->dev, 48 "init_hw - could not initialize DSP comm page\n"); 49 return err; 50 } 51 52 chip->device_id = device_id; 53 chip->subdevice_id = subdevice_id; 54 chip->bad_board = TRUE; 55 chip->has_midi = TRUE; 56 chip->dsp_code_to_load = FW_LAYLA24_DSP; 57 chip->input_clock_types = 58 ECHO_CLOCK_BIT_INTERNAL | ECHO_CLOCK_BIT_SPDIF | 59 ECHO_CLOCK_BIT_WORD | ECHO_CLOCK_BIT_ADAT; 60 chip->digital_modes = 61 ECHOCAPS_HAS_DIGITAL_MODE_SPDIF_RCA | 62 ECHOCAPS_HAS_DIGITAL_MODE_SPDIF_OPTICAL | 63 ECHOCAPS_HAS_DIGITAL_MODE_ADAT; 64 65 if ((err = load_firmware(chip)) < 0) 66 return err; 67 chip->bad_board = FALSE; 68 69 if ((err = init_line_levels(chip)) < 0) 70 return err; 71 72 return err; 73} 74 75 76 77static int set_mixer_defaults(struct echoaudio *chip) 78{ 79 chip->digital_mode = DIGITAL_MODE_SPDIF_RCA; 80 chip->professional_spdif = FALSE; 81 chip->digital_in_automute = TRUE; 82 return init_line_levels(chip); 83} 84 85 86 87static u32 detect_input_clocks(const struct echoaudio *chip) 88{ 89 u32 clocks_from_dsp, clock_bits; 90 91 /* Map the DSP clock detect bits to the generic driver clock detect bits */ 92 clocks_from_dsp = le32_to_cpu(chip->comm_page->status_clocks); 93 94 clock_bits = ECHO_CLOCK_BIT_INTERNAL; 95 96 if (clocks_from_dsp & GML_CLOCK_DETECT_BIT_SPDIF) 97 clock_bits |= ECHO_CLOCK_BIT_SPDIF; 98 99 if (clocks_from_dsp & GML_CLOCK_DETECT_BIT_ADAT) 100 clock_bits |= ECHO_CLOCK_BIT_ADAT; 101 102 if (clocks_from_dsp & GML_CLOCK_DETECT_BIT_WORD) 103 clock_bits |= ECHO_CLOCK_BIT_WORD; 104 105 return clock_bits; 106} 107 108 109 110/* Layla24 has an ASIC on the PCI card and another ASIC in the external box; 111both need to be loaded. */ 112static int load_asic(struct echoaudio *chip) 113{ 114 int err; 115 116 if (chip->asic_loaded) 117 return 1; 118 119 120 /* Give the DSP a few milliseconds to settle down */ 121 mdelay(10); 122 123 /* Load the ASIC for the PCI card */ 124 err = load_asic_generic(chip, DSP_FNC_LOAD_LAYLA24_PCI_CARD_ASIC, 125 FW_LAYLA24_1_ASIC); 126 if (err < 0) 127 return err; 128 129 chip->asic_code = FW_LAYLA24_2S_ASIC; 130 131 /* Now give the new ASIC a little time to set up */ 132 mdelay(10); 133 134 /* Do the external one */ 135 err = load_asic_generic(chip, DSP_FNC_LOAD_LAYLA24_EXTERNAL_ASIC, 136 FW_LAYLA24_2S_ASIC); 137 if (err < 0) 138 return FALSE; 139 140 /* Now give the external ASIC a little time to set up */ 141 mdelay(10); 142 143 /* See if it worked */ 144 err = check_asic_status(chip); 145 146 /* Set up the control register if the load succeeded - 147 48 kHz, internal clock, S/PDIF RCA mode */ 148 if (!err) 149 err = write_control_reg(chip, GML_CONVERTER_ENABLE | GML_48KHZ, 150 TRUE); 151 152 return err; 153} 154 155 156 157static int set_sample_rate(struct echoaudio *chip, u32 rate) 158{ 159 u32 control_reg, clock, base_rate; 160 161 if (snd_BUG_ON(rate >= 50000 && 162 chip->digital_mode == DIGITAL_MODE_ADAT)) 163 return -EINVAL; 164 165 /* Only set the clock for internal mode. */ 166 if (chip->input_clock != ECHO_CLOCK_INTERNAL) { 167 dev_warn(chip->card->dev, 168 "Cannot set sample rate - clock not set to CLK_CLOCKININTERNAL\n"); 169 /* Save the rate anyhow */ 170 chip->comm_page->sample_rate = cpu_to_le32(rate); 171 chip->sample_rate = rate; 172 return 0; 173 } 174 175 /* Get the control register & clear the appropriate bits */ 176 control_reg = le32_to_cpu(chip->comm_page->control_register); 177 control_reg &= GML_CLOCK_CLEAR_MASK & GML_SPDIF_RATE_CLEAR_MASK; 178 179 clock = 0; 180 181 switch (rate) { 182 case 96000: 183 clock = GML_96KHZ; 184 break; 185 case 88200: 186 clock = GML_88KHZ; 187 break; 188 case 48000: 189 clock = GML_48KHZ | GML_SPDIF_SAMPLE_RATE1; 190 break; 191 case 44100: 192 clock = GML_44KHZ; 193 /* Professional mode */ 194 if (control_reg & GML_SPDIF_PRO_MODE) 195 clock |= GML_SPDIF_SAMPLE_RATE0; 196 break; 197 case 32000: 198 clock = GML_32KHZ | GML_SPDIF_SAMPLE_RATE0 | 199 GML_SPDIF_SAMPLE_RATE1; 200 break; 201 case 22050: 202 clock = GML_22KHZ; 203 break; 204 case 16000: 205 clock = GML_16KHZ; 206 break; 207 case 11025: 208 clock = GML_11KHZ; 209 break; 210 case 8000: 211 clock = GML_8KHZ; 212 break; 213 default: 214 /* If this is a non-standard rate, then the driver needs to 215 use Layla24's special "continuous frequency" mode */ 216 clock = LAYLA24_CONTINUOUS_CLOCK; 217 if (rate > 50000) { 218 base_rate = rate >> 1; 219 control_reg |= GML_DOUBLE_SPEED_MODE; 220 } else { 221 base_rate = rate; 222 } 223 224 if (base_rate < 25000) 225 base_rate = 25000; 226 227 if (wait_handshake(chip)) 228 return -EIO; 229 230 chip->comm_page->sample_rate = 231 cpu_to_le32(LAYLA24_MAGIC_NUMBER / base_rate - 2); 232 233 clear_handshake(chip); 234 send_vector(chip, DSP_VC_SET_LAYLA24_FREQUENCY_REG); 235 } 236 237 control_reg |= clock; 238 239 chip->comm_page->sample_rate = cpu_to_le32(rate); /* ignored by the DSP ? */ 240 chip->sample_rate = rate; 241 dev_dbg(chip->card->dev, 242 "set_sample_rate: %d clock %d\n", rate, control_reg); 243 244 return write_control_reg(chip, control_reg, FALSE); 245} 246 247 248 249static int set_input_clock(struct echoaudio *chip, u16 clock) 250{ 251 u32 control_reg, clocks_from_dsp; 252 253 /* Mask off the clock select bits */ 254 control_reg = le32_to_cpu(chip->comm_page->control_register) & 255 GML_CLOCK_CLEAR_MASK; 256 clocks_from_dsp = le32_to_cpu(chip->comm_page->status_clocks); 257 258 /* Pick the new clock */ 259 switch (clock) { 260 case ECHO_CLOCK_INTERNAL: 261 chip->input_clock = ECHO_CLOCK_INTERNAL; 262 return set_sample_rate(chip, chip->sample_rate); 263 case ECHO_CLOCK_SPDIF: 264 if (chip->digital_mode == DIGITAL_MODE_ADAT) 265 return -EAGAIN; 266 control_reg |= GML_SPDIF_CLOCK; 267 /* Layla24 doesn't support 96KHz S/PDIF */ 268 control_reg &= ~GML_DOUBLE_SPEED_MODE; 269 break; 270 case ECHO_CLOCK_WORD: 271 control_reg |= GML_WORD_CLOCK; 272 if (clocks_from_dsp & GML_CLOCK_DETECT_BIT_WORD96) 273 control_reg |= GML_DOUBLE_SPEED_MODE; 274 else 275 control_reg &= ~GML_DOUBLE_SPEED_MODE; 276 break; 277 case ECHO_CLOCK_ADAT: 278 if (chip->digital_mode != DIGITAL_MODE_ADAT) 279 return -EAGAIN; 280 control_reg |= GML_ADAT_CLOCK; 281 control_reg &= ~GML_DOUBLE_SPEED_MODE; 282 break; 283 default: 284 dev_err(chip->card->dev, 285 "Input clock 0x%x not supported for Layla24\n", clock); 286 return -EINVAL; 287 } 288 289 chip->input_clock = clock; 290 return write_control_reg(chip, control_reg, TRUE); 291} 292 293 294 295/* Depending on what digital mode you want, Layla24 needs different ASICs 296loaded. This function checks the ASIC needed for the new mode and sees 297if it matches the one already loaded. */ 298static int switch_asic(struct echoaudio *chip, short asic) 299{ 300 s8 *monitors; 301 302 /* Check to see if this is already loaded */ 303 if (asic != chip->asic_code) { 304 monitors = kmemdup(chip->comm_page->monitors, 305 MONITOR_ARRAY_SIZE, GFP_KERNEL); 306 if (! monitors) 307 return -ENOMEM; 308 309 memset(chip->comm_page->monitors, ECHOGAIN_MUTED, 310 MONITOR_ARRAY_SIZE); 311 312 /* Load the desired ASIC */ 313 if (load_asic_generic(chip, DSP_FNC_LOAD_LAYLA24_EXTERNAL_ASIC, 314 asic) < 0) { 315 memcpy(chip->comm_page->monitors, monitors, 316 MONITOR_ARRAY_SIZE); 317 kfree(monitors); 318 return -EIO; 319 } 320 chip->asic_code = asic; 321 memcpy(chip->comm_page->monitors, monitors, MONITOR_ARRAY_SIZE); 322 kfree(monitors); 323 } 324 325 return 0; 326} 327 328 329 330static int dsp_set_digital_mode(struct echoaudio *chip, u8 mode) 331{ 332 u32 control_reg; 333 int err, incompatible_clock; 334 short asic; 335 336 /* Set clock to "internal" if it's not compatible with the new mode */ 337 incompatible_clock = FALSE; 338 switch (mode) { 339 case DIGITAL_MODE_SPDIF_OPTICAL: 340 case DIGITAL_MODE_SPDIF_RCA: 341 if (chip->input_clock == ECHO_CLOCK_ADAT) 342 incompatible_clock = TRUE; 343 asic = FW_LAYLA24_2S_ASIC; 344 break; 345 case DIGITAL_MODE_ADAT: 346 if (chip->input_clock == ECHO_CLOCK_SPDIF) 347 incompatible_clock = TRUE; 348 asic = FW_LAYLA24_2A_ASIC; 349 break; 350 default: 351 dev_err(chip->card->dev, 352 "Digital mode not supported: %d\n", mode); 353 return -EINVAL; 354 } 355 356 if (incompatible_clock) { /* Switch to 48KHz, internal */ 357 chip->sample_rate = 48000; 358 spin_lock_irq(&chip->lock); 359 set_input_clock(chip, ECHO_CLOCK_INTERNAL); 360 spin_unlock_irq(&chip->lock); 361 } 362 363 /* switch_asic() can sleep */ 364 if (switch_asic(chip, asic) < 0) 365 return -EIO; 366 367 spin_lock_irq(&chip->lock); 368 369 /* Tweak the control register */ 370 control_reg = le32_to_cpu(chip->comm_page->control_register); 371 control_reg &= GML_DIGITAL_MODE_CLEAR_MASK; 372 373 switch (mode) { 374 case DIGITAL_MODE_SPDIF_OPTICAL: 375 control_reg |= GML_SPDIF_OPTICAL_MODE; 376 break; 377 case DIGITAL_MODE_SPDIF_RCA: 378 /* GML_SPDIF_OPTICAL_MODE bit cleared */ 379 break; 380 case DIGITAL_MODE_ADAT: 381 control_reg |= GML_ADAT_MODE; 382 control_reg &= ~GML_DOUBLE_SPEED_MODE; 383 break; 384 } 385 386 err = write_control_reg(chip, control_reg, TRUE); 387 spin_unlock_irq(&chip->lock); 388 if (err < 0) 389 return err; 390 chip->digital_mode = mode; 391 392 dev_dbg(chip->card->dev, "set_digital_mode to %d\n", mode); 393 return incompatible_clock; 394} 395