1 // SPDX-License-Identifier: GPL-2.0-or-later 2 /* 3 * Driver for ESS Maestro 1/2/2E Sound Card (started 21.8.99) 4 * Copyright (c) by Matze Braun <MatzeBraun@gmx.de>. 5 * Takashi Iwai <tiwai@suse.de> 6 * 7 * Most of the driver code comes from Zach Brown(zab@redhat.com) 8 * Alan Cox OSS Driver 9 * Rewritted from card-es1938.c source. 10 * 11 * TODO: 12 * Perhaps Synth 13 * 14 * Notes from Zach Brown about the driver code 15 * 16 * Hardware Description 17 * 18 * A working Maestro setup contains the Maestro chip wired to a 19 * codec or 2. In the Maestro we have the APUs, the ASSP, and the 20 * Wavecache. The APUs can be though of as virtual audio routing 21 * channels. They can take data from a number of sources and perform 22 * basic encodings of the data. The wavecache is a storehouse for 23 * PCM data. Typically it deals with PCI and interracts with the 24 * APUs. The ASSP is a wacky DSP like device that ESS is loth 25 * to release docs on. Thankfully it isn't required on the Maestro 26 * until you start doing insane things like FM emulation and surround 27 * encoding. The codecs are almost always AC-97 compliant codecs, 28 * but it appears that early Maestros may have had PT101 (an ESS 29 * part?) wired to them. The only real difference in the Maestro 30 * families is external goop like docking capability, memory for 31 * the ASSP, and initialization differences. 32 * 33 * Driver Operation 34 * 35 * We only drive the APU/Wavecache as typical DACs and drive the 36 * mixers in the codecs. There are 64 APUs. We assign 6 to each 37 * /dev/dsp? device. 2 channels for output, and 4 channels for 38 * input. 39 * 40 * Each APU can do a number of things, but we only really use 41 * 3 basic functions. For playback we use them to convert PCM 42 * data fetched over PCI by the wavecahche into analog data that 43 * is handed to the codec. One APU for mono, and a pair for stereo. 44 * When in stereo, the combination of smarts in the APU and Wavecache 45 * decide which wavecache gets the left or right channel. 46 * 47 * For record we still use the old overly mono system. For each in 48 * coming channel the data comes in from the codec, through a 'input' 49 * APU, through another rate converter APU, and then into memory via 50 * the wavecache and PCI. If its stereo, we mash it back into LRLR in 51 * software. The pass between the 2 APUs is supposedly what requires us 52 * to have a 512 byte buffer sitting around in wavecache/memory. 53 * 54 * The wavecache makes our life even more fun. First off, it can 55 * only address the first 28 bits of PCI address space, making it 56 * useless on quite a few architectures. Secondly, its insane. 57 * It claims to fetch from 4 regions of PCI space, each 4 meg in length. 58 * But that doesn't really work. You can only use 1 region. So all our 59 * allocations have to be in 4meg of each other. Booo. Hiss. 60 * So we have a module parameter, dsps_order, that is the order of 61 * the number of dsps to provide. All their buffer space is allocated 62 * on open time. The sonicvibes OSS routines we inherited really want 63 * power of 2 buffers, so we have all those next to each other, then 64 * 512 byte regions for the recording wavecaches. This ends up 65 * wasting quite a bit of memory. The only fixes I can see would be 66 * getting a kernel allocator that could work in zones, or figuring out 67 * just how to coerce the WP into doing what we want. 68 * 69 * The indirection of the various registers means we have to spinlock 70 * nearly all register accesses. We have the main register indirection 71 * like the wave cache, maestro registers, etc. Then we have beasts 72 * like the APU interface that is indirect registers gotten at through 73 * the main maestro indirection. Ouch. We spinlock around the actual 74 * ports on a per card basis. This means spinlock activity at each IO 75 * operation, but the only IO operation clusters are in non critical 76 * paths and it makes the code far easier to follow. Interrupts are 77 * blocked while holding the locks because the int handler has to 78 * get at some of them :(. The mixer interface doesn't, however. 79 * We also have an OSS state lock that is thrown around in a few 80 * places. 81 */ 82 83 #include <linux/io.h> 84 #include <linux/delay.h> 85 #include <linux/interrupt.h> 86 #include <linux/init.h> 87 #include <linux/pci.h> 88 #include <linux/dma-mapping.h> 89 #include <linux/slab.h> 90 #include <linux/gameport.h> 91 #include <linux/module.h> 92 #include <linux/mutex.h> 93 #include <linux/input.h> 94 95 #include <sound/core.h> 96 #include <sound/pcm.h> 97 #include <sound/mpu401.h> 98 #include <sound/ac97_codec.h> 99 #include <sound/initval.h> 100 101 #ifdef CONFIG_SND_ES1968_RADIO 102 #include <media/drv-intf/tea575x.h> 103 #endif 104 105 #define CARD_NAME "ESS Maestro1/2" 106 #define DRIVER_NAME "ES1968" 107 108 MODULE_DESCRIPTION("ESS Maestro"); 109 MODULE_LICENSE("GPL"); 110 111 #if IS_REACHABLE(CONFIG_GAMEPORT) 112 #define SUPPORT_JOYSTICK 1 113 #endif 114 115 static int index[SNDRV_CARDS] = SNDRV_DEFAULT_IDX; /* Index 1-MAX */ 116 static char *id[SNDRV_CARDS] = SNDRV_DEFAULT_STR; /* ID for this card */ 117 static bool enable[SNDRV_CARDS] = SNDRV_DEFAULT_ENABLE_PNP; /* Enable this card */ 118 static int total_bufsize[SNDRV_CARDS] = {[0 ... (SNDRV_CARDS - 1)] = 1024 }; 119 static int pcm_substreams_p[SNDRV_CARDS] = {[0 ... (SNDRV_CARDS - 1)] = 4 }; 120 static int pcm_substreams_c[SNDRV_CARDS] = {[0 ... (SNDRV_CARDS - 1)] = 1 }; 121 static int clock[SNDRV_CARDS]; 122 static int use_pm[SNDRV_CARDS] = {[0 ... (SNDRV_CARDS - 1)] = 2}; 123 static int enable_mpu[SNDRV_CARDS] = {[0 ... (SNDRV_CARDS - 1)] = 2}; 124 #ifdef SUPPORT_JOYSTICK 125 static bool joystick[SNDRV_CARDS]; 126 #endif 127 static int radio_nr[SNDRV_CARDS] = {[0 ... (SNDRV_CARDS - 1)] = -1}; 128 129 module_param_array(index, int, NULL, 0444); 130 MODULE_PARM_DESC(index, "Index value for " CARD_NAME " soundcard."); 131 module_param_array(id, charp, NULL, 0444); 132 MODULE_PARM_DESC(id, "ID string for " CARD_NAME " soundcard."); 133 module_param_array(enable, bool, NULL, 0444); 134 MODULE_PARM_DESC(enable, "Enable " CARD_NAME " soundcard."); 135 module_param_array(total_bufsize, int, NULL, 0444); 136 MODULE_PARM_DESC(total_bufsize, "Total buffer size in kB."); 137 module_param_array(pcm_substreams_p, int, NULL, 0444); 138 MODULE_PARM_DESC(pcm_substreams_p, "PCM Playback substreams for " CARD_NAME " soundcard."); 139 module_param_array(pcm_substreams_c, int, NULL, 0444); 140 MODULE_PARM_DESC(pcm_substreams_c, "PCM Capture substreams for " CARD_NAME " soundcard."); 141 module_param_array(clock, int, NULL, 0444); 142 MODULE_PARM_DESC(clock, "Clock on " CARD_NAME " soundcard. (0 = auto-detect)"); 143 module_param_array(use_pm, int, NULL, 0444); 144 MODULE_PARM_DESC(use_pm, "Toggle power-management. (0 = off, 1 = on, 2 = auto)"); 145 module_param_array(enable_mpu, int, NULL, 0444); 146 MODULE_PARM_DESC(enable_mpu, "Enable MPU401. (0 = off, 1 = on, 2 = auto)"); 147 #ifdef SUPPORT_JOYSTICK 148 module_param_array(joystick, bool, NULL, 0444); 149 MODULE_PARM_DESC(joystick, "Enable joystick."); 150 #endif 151 module_param_array(radio_nr, int, NULL, 0444); 152 MODULE_PARM_DESC(radio_nr, "Radio device numbers"); 153 154 155 156 #define NR_APUS 64 157 #define NR_APU_REGS 16 158 159 /* NEC Versas ? */ 160 #define NEC_VERSA_SUBID1 0x80581033 161 #define NEC_VERSA_SUBID2 0x803c1033 162 163 /* Mode Flags */ 164 #define ESS_FMT_STEREO 0x01 165 #define ESS_FMT_16BIT 0x02 166 167 #define DAC_RUNNING 1 168 #define ADC_RUNNING 2 169 170 /* Values for the ESM_LEGACY_AUDIO_CONTROL */ 171 172 #define ESS_DISABLE_AUDIO 0x8000 173 #define ESS_ENABLE_SERIAL_IRQ 0x4000 174 #define IO_ADRESS_ALIAS 0x0020 175 #define MPU401_IRQ_ENABLE 0x0010 176 #define MPU401_IO_ENABLE 0x0008 177 #define GAME_IO_ENABLE 0x0004 178 #define FM_IO_ENABLE 0x0002 179 #define SB_IO_ENABLE 0x0001 180 181 /* Values for the ESM_CONFIG_A */ 182 183 #define PIC_SNOOP1 0x4000 184 #define PIC_SNOOP2 0x2000 185 #define SAFEGUARD 0x0800 186 #define DMA_CLEAR 0x0700 187 #define DMA_DDMA 0x0000 188 #define DMA_TDMA 0x0100 189 #define DMA_PCPCI 0x0200 190 #define POST_WRITE 0x0080 191 #define PCI_TIMING 0x0040 192 #define SWAP_LR 0x0020 193 #define SUBTR_DECODE 0x0002 194 195 /* Values for the ESM_CONFIG_B */ 196 197 #define SPDIF_CONFB 0x0100 198 #define HWV_CONFB 0x0080 199 #define DEBOUNCE 0x0040 200 #define GPIO_CONFB 0x0020 201 #define CHI_CONFB 0x0010 202 #define IDMA_CONFB 0x0008 /*undoc */ 203 #define MIDI_FIX 0x0004 /*undoc */ 204 #define IRQ_TO_ISA 0x0001 /*undoc */ 205 206 /* Values for Ring Bus Control B */ 207 #define RINGB_2CODEC_ID_MASK 0x0003 208 #define RINGB_DIS_VALIDATION 0x0008 209 #define RINGB_EN_SPDIF 0x0010 210 #define RINGB_EN_2CODEC 0x0020 211 #define RINGB_SING_BIT_DUAL 0x0040 212 213 /* ****Port Addresses**** */ 214 215 /* Write & Read */ 216 #define ESM_INDEX 0x02 217 #define ESM_DATA 0x00 218 219 /* AC97 + RingBus */ 220 #define ESM_AC97_INDEX 0x30 221 #define ESM_AC97_DATA 0x32 222 #define ESM_RING_BUS_DEST 0x34 223 #define ESM_RING_BUS_CONTR_A 0x36 224 #define ESM_RING_BUS_CONTR_B 0x38 225 #define ESM_RING_BUS_SDO 0x3A 226 227 /* WaveCache*/ 228 #define WC_INDEX 0x10 229 #define WC_DATA 0x12 230 #define WC_CONTROL 0x14 231 232 /* ASSP*/ 233 #define ASSP_INDEX 0x80 234 #define ASSP_MEMORY 0x82 235 #define ASSP_DATA 0x84 236 #define ASSP_CONTROL_A 0xA2 237 #define ASSP_CONTROL_B 0xA4 238 #define ASSP_CONTROL_C 0xA6 239 #define ASSP_HOSTW_INDEX 0xA8 240 #define ASSP_HOSTW_DATA 0xAA 241 #define ASSP_HOSTW_IRQ 0xAC 242 /* Midi */ 243 #define ESM_MPU401_PORT 0x98 244 /* Others */ 245 #define ESM_PORT_HOST_IRQ 0x18 246 247 #define IDR0_DATA_PORT 0x00 248 #define IDR1_CRAM_POINTER 0x01 249 #define IDR2_CRAM_DATA 0x02 250 #define IDR3_WAVE_DATA 0x03 251 #define IDR4_WAVE_PTR_LOW 0x04 252 #define IDR5_WAVE_PTR_HI 0x05 253 #define IDR6_TIMER_CTRL 0x06 254 #define IDR7_WAVE_ROMRAM 0x07 255 256 #define WRITEABLE_MAP 0xEFFFFF 257 #define READABLE_MAP 0x64003F 258 259 /* PCI Register */ 260 261 #define ESM_LEGACY_AUDIO_CONTROL 0x40 262 #define ESM_ACPI_COMMAND 0x54 263 #define ESM_CONFIG_A 0x50 264 #define ESM_CONFIG_B 0x52 265 #define ESM_DDMA 0x60 266 267 /* Bob Bits */ 268 #define ESM_BOB_ENABLE 0x0001 269 #define ESM_BOB_START 0x0001 270 271 /* Host IRQ Control Bits */ 272 #define ESM_RESET_MAESTRO 0x8000 273 #define ESM_RESET_DIRECTSOUND 0x4000 274 #define ESM_HIRQ_ClkRun 0x0100 275 #define ESM_HIRQ_HW_VOLUME 0x0040 276 #define ESM_HIRQ_HARPO 0x0030 /* What's that? */ 277 #define ESM_HIRQ_ASSP 0x0010 278 #define ESM_HIRQ_DSIE 0x0004 279 #define ESM_HIRQ_MPU401 0x0002 280 #define ESM_HIRQ_SB 0x0001 281 282 /* Host IRQ Status Bits */ 283 #define ESM_MPU401_IRQ 0x02 284 #define ESM_SB_IRQ 0x01 285 #define ESM_SOUND_IRQ 0x04 286 #define ESM_ASSP_IRQ 0x10 287 #define ESM_HWVOL_IRQ 0x40 288 289 #define ESS_SYSCLK 50000000 290 #define ESM_BOB_FREQ 200 291 #define ESM_BOB_FREQ_MAX 800 292 293 #define ESM_FREQ_ESM1 (49152000L / 1024L) /* default rate 48000 */ 294 #define ESM_FREQ_ESM2 (50000000L / 1024L) 295 296 /* APU Modes: reg 0x00, bit 4-7 */ 297 #define ESM_APU_MODE_SHIFT 4 298 #define ESM_APU_MODE_MASK (0xf << 4) 299 #define ESM_APU_OFF 0x00 300 #define ESM_APU_16BITLINEAR 0x01 /* 16-Bit Linear Sample Player */ 301 #define ESM_APU_16BITSTEREO 0x02 /* 16-Bit Stereo Sample Player */ 302 #define ESM_APU_8BITLINEAR 0x03 /* 8-Bit Linear Sample Player */ 303 #define ESM_APU_8BITSTEREO 0x04 /* 8-Bit Stereo Sample Player */ 304 #define ESM_APU_8BITDIFF 0x05 /* 8-Bit Differential Sample Playrer */ 305 #define ESM_APU_DIGITALDELAY 0x06 /* Digital Delay Line */ 306 #define ESM_APU_DUALTAP 0x07 /* Dual Tap Reader */ 307 #define ESM_APU_CORRELATOR 0x08 /* Correlator */ 308 #define ESM_APU_INPUTMIXER 0x09 /* Input Mixer */ 309 #define ESM_APU_WAVETABLE 0x0A /* Wave Table Mode */ 310 #define ESM_APU_SRCONVERTOR 0x0B /* Sample Rate Convertor */ 311 #define ESM_APU_16BITPINGPONG 0x0C /* 16-Bit Ping-Pong Sample Player */ 312 #define ESM_APU_RESERVED1 0x0D /* Reserved 1 */ 313 #define ESM_APU_RESERVED2 0x0E /* Reserved 2 */ 314 #define ESM_APU_RESERVED3 0x0F /* Reserved 3 */ 315 316 /* reg 0x00 */ 317 #define ESM_APU_FILTER_Q_SHIFT 0 318 #define ESM_APU_FILTER_Q_MASK (3 << 0) 319 /* APU Filtey Q Control */ 320 #define ESM_APU_FILTER_LESSQ 0x00 321 #define ESM_APU_FILTER_MOREQ 0x03 322 323 #define ESM_APU_FILTER_TYPE_SHIFT 2 324 #define ESM_APU_FILTER_TYPE_MASK (3 << 2) 325 #define ESM_APU_ENV_TYPE_SHIFT 8 326 #define ESM_APU_ENV_TYPE_MASK (3 << 8) 327 #define ESM_APU_ENV_STATE_SHIFT 10 328 #define ESM_APU_ENV_STATE_MASK (3 << 10) 329 #define ESM_APU_END_CURVE (1 << 12) 330 #define ESM_APU_INT_ON_LOOP (1 << 13) 331 #define ESM_APU_DMA_ENABLE (1 << 14) 332 333 /* reg 0x02 */ 334 #define ESM_APU_SUBMIX_GROUP_SHIRT 0 335 #define ESM_APU_SUBMIX_GROUP_MASK (7 << 0) 336 #define ESM_APU_SUBMIX_MODE (1 << 3) 337 #define ESM_APU_6dB (1 << 4) 338 #define ESM_APU_DUAL_EFFECT (1 << 5) 339 #define ESM_APU_EFFECT_CHANNELS_SHIFT 6 340 #define ESM_APU_EFFECT_CHANNELS_MASK (3 << 6) 341 342 /* reg 0x03 */ 343 #define ESM_APU_STEP_SIZE_MASK 0x0fff 344 345 /* reg 0x04 */ 346 #define ESM_APU_PHASE_SHIFT 0 347 #define ESM_APU_PHASE_MASK (0xff << 0) 348 #define ESM_APU_WAVE64K_PAGE_SHIFT 8 /* most 8bit of wave start offset */ 349 #define ESM_APU_WAVE64K_PAGE_MASK (0xff << 8) 350 351 /* reg 0x05 - wave start offset */ 352 /* reg 0x06 - wave end offset */ 353 /* reg 0x07 - wave loop length */ 354 355 /* reg 0x08 */ 356 #define ESM_APU_EFFECT_GAIN_SHIFT 0 357 #define ESM_APU_EFFECT_GAIN_MASK (0xff << 0) 358 #define ESM_APU_TREMOLO_DEPTH_SHIFT 8 359 #define ESM_APU_TREMOLO_DEPTH_MASK (0xf << 8) 360 #define ESM_APU_TREMOLO_RATE_SHIFT 12 361 #define ESM_APU_TREMOLO_RATE_MASK (0xf << 12) 362 363 /* reg 0x09 */ 364 /* bit 0-7 amplitude dest? */ 365 #define ESM_APU_AMPLITUDE_NOW_SHIFT 8 366 #define ESM_APU_AMPLITUDE_NOW_MASK (0xff << 8) 367 368 /* reg 0x0a */ 369 #define ESM_APU_POLAR_PAN_SHIFT 0 370 #define ESM_APU_POLAR_PAN_MASK (0x3f << 0) 371 /* Polar Pan Control */ 372 #define ESM_APU_PAN_CENTER_CIRCLE 0x00 373 #define ESM_APU_PAN_MIDDLE_RADIUS 0x01 374 #define ESM_APU_PAN_OUTSIDE_RADIUS 0x02 375 376 #define ESM_APU_FILTER_TUNING_SHIFT 8 377 #define ESM_APU_FILTER_TUNING_MASK (0xff << 8) 378 379 /* reg 0x0b */ 380 #define ESM_APU_DATA_SRC_A_SHIFT 0 381 #define ESM_APU_DATA_SRC_A_MASK (0x7f << 0) 382 #define ESM_APU_INV_POL_A (1 << 7) 383 #define ESM_APU_DATA_SRC_B_SHIFT 8 384 #define ESM_APU_DATA_SRC_B_MASK (0x7f << 8) 385 #define ESM_APU_INV_POL_B (1 << 15) 386 387 #define ESM_APU_VIBRATO_RATE_SHIFT 0 388 #define ESM_APU_VIBRATO_RATE_MASK (0xf << 0) 389 #define ESM_APU_VIBRATO_DEPTH_SHIFT 4 390 #define ESM_APU_VIBRATO_DEPTH_MASK (0xf << 4) 391 #define ESM_APU_VIBRATO_PHASE_SHIFT 8 392 #define ESM_APU_VIBRATO_PHASE_MASK (0xff << 8) 393 394 /* reg 0x0c */ 395 #define ESM_APU_RADIUS_SELECT (1 << 6) 396 397 /* APU Filter Control */ 398 #define ESM_APU_FILTER_2POLE_LOPASS 0x00 399 #define ESM_APU_FILTER_2POLE_BANDPASS 0x01 400 #define ESM_APU_FILTER_2POLE_HIPASS 0x02 401 #define ESM_APU_FILTER_1POLE_LOPASS 0x03 402 #define ESM_APU_FILTER_1POLE_HIPASS 0x04 403 #define ESM_APU_FILTER_OFF 0x05 404 405 /* APU ATFP Type */ 406 #define ESM_APU_ATFP_AMPLITUDE 0x00 407 #define ESM_APU_ATFP_TREMELO 0x01 408 #define ESM_APU_ATFP_FILTER 0x02 409 #define ESM_APU_ATFP_PAN 0x03 410 411 /* APU ATFP Flags */ 412 #define ESM_APU_ATFP_FLG_OFF 0x00 413 #define ESM_APU_ATFP_FLG_WAIT 0x01 414 #define ESM_APU_ATFP_FLG_DONE 0x02 415 #define ESM_APU_ATFP_FLG_INPROCESS 0x03 416 417 418 /* capture mixing buffer size */ 419 #define ESM_MEM_ALIGN 0x1000 420 #define ESM_MIXBUF_SIZE 0x400 421 422 #define ESM_MODE_PLAY 0 423 #define ESM_MODE_CAPTURE 1 424 425 426 /* APU use in the driver */ 427 enum snd_enum_apu_type { 428 ESM_APU_PCM_PLAY, 429 ESM_APU_PCM_CAPTURE, 430 ESM_APU_PCM_RATECONV, 431 ESM_APU_FREE 432 }; 433 434 /* chip type */ 435 enum { 436 TYPE_MAESTRO, TYPE_MAESTRO2, TYPE_MAESTRO2E 437 }; 438 439 /* DMA Hack! */ 440 struct esm_memory { 441 struct snd_dma_buffer buf; 442 int empty; /* status */ 443 struct list_head list; 444 }; 445 446 /* Playback Channel */ 447 struct esschan { 448 int running; 449 450 u8 apu[4]; 451 u8 apu_mode[4]; 452 453 /* playback/capture pcm buffer */ 454 struct esm_memory *memory; 455 /* capture mixer buffer */ 456 struct esm_memory *mixbuf; 457 458 unsigned int hwptr; /* current hw pointer in bytes */ 459 unsigned int count; /* sample counter in bytes */ 460 unsigned int dma_size; /* total buffer size in bytes */ 461 unsigned int frag_size; /* period size in bytes */ 462 unsigned int wav_shift; 463 u16 base[4]; /* offset for ptr */ 464 465 /* stereo/16bit flag */ 466 unsigned char fmt; 467 int mode; /* playback / capture */ 468 469 int bob_freq; /* required timer frequency */ 470 471 struct snd_pcm_substream *substream; 472 473 /* linked list */ 474 struct list_head list; 475 476 #ifdef CONFIG_PM_SLEEP 477 u16 wc_map[4]; 478 #endif 479 }; 480 481 struct es1968 { 482 /* Module Config */ 483 int total_bufsize; /* in bytes */ 484 485 int playback_streams, capture_streams; 486 487 unsigned int clock; /* clock */ 488 /* for clock measurement */ 489 unsigned int in_measurement: 1; 490 unsigned int measure_apu; 491 unsigned int measure_lastpos; 492 unsigned int measure_count; 493 494 /* buffer */ 495 struct snd_dma_buffer dma; 496 497 /* Resources... */ 498 int irq; 499 unsigned long io_port; 500 int type; 501 struct pci_dev *pci; 502 struct snd_card *card; 503 struct snd_pcm *pcm; 504 int do_pm; /* power-management enabled */ 505 506 /* DMA memory block */ 507 struct list_head buf_list; 508 509 /* ALSA Stuff */ 510 struct snd_ac97 *ac97; 511 struct snd_rawmidi *rmidi; 512 513 spinlock_t reg_lock; 514 unsigned int in_suspend; 515 516 /* Maestro Stuff */ 517 u16 maestro_map[32]; 518 int bobclient; /* active timer instancs */ 519 int bob_freq; /* timer frequency */ 520 struct mutex memory_mutex; /* memory lock */ 521 522 /* APU states */ 523 unsigned char apu[NR_APUS]; 524 525 /* active substreams */ 526 struct list_head substream_list; 527 spinlock_t substream_lock; 528 529 #ifdef CONFIG_PM_SLEEP 530 u16 apu_map[NR_APUS][NR_APU_REGS]; 531 #endif 532 533 #ifdef SUPPORT_JOYSTICK 534 struct gameport *gameport; 535 #endif 536 537 #ifdef CONFIG_SND_ES1968_INPUT 538 struct input_dev *input_dev; 539 char phys[64]; /* physical device path */ 540 #else 541 struct snd_kcontrol *master_switch; /* for h/w volume control */ 542 struct snd_kcontrol *master_volume; 543 #endif 544 struct work_struct hwvol_work; 545 546 #ifdef CONFIG_SND_ES1968_RADIO 547 struct v4l2_device v4l2_dev; 548 struct snd_tea575x tea; 549 unsigned int tea575x_tuner; 550 #endif 551 }; 552 553 static irqreturn_t snd_es1968_interrupt(int irq, void *dev_id); 554 555 static const struct pci_device_id snd_es1968_ids[] = { 556 /* Maestro 1 */ 557 { 0x1285, 0x0100, PCI_ANY_ID, PCI_ANY_ID, PCI_CLASS_MULTIMEDIA_AUDIO << 8, 0xffff00, TYPE_MAESTRO }, 558 /* Maestro 2 */ 559 { 0x125d, 0x1968, PCI_ANY_ID, PCI_ANY_ID, PCI_CLASS_MULTIMEDIA_AUDIO << 8, 0xffff00, TYPE_MAESTRO2 }, 560 /* Maestro 2E */ 561 { 0x125d, 0x1978, PCI_ANY_ID, PCI_ANY_ID, PCI_CLASS_MULTIMEDIA_AUDIO << 8, 0xffff00, TYPE_MAESTRO2E }, 562 { 0, } 563 }; 564 565 MODULE_DEVICE_TABLE(pci, snd_es1968_ids); 566 567 /* ********************* 568 * Low Level Funcs! * 569 *********************/ 570 571 /* no spinlock */ 572 static void __maestro_write(struct es1968 *chip, u16 reg, u16 data) 573 { 574 outw(reg, chip->io_port + ESM_INDEX); 575 outw(data, chip->io_port + ESM_DATA); 576 chip->maestro_map[reg] = data; 577 } 578 579 static inline void maestro_write(struct es1968 *chip, u16 reg, u16 data) 580 { 581 unsigned long flags; 582 spin_lock_irqsave(&chip->reg_lock, flags); 583 __maestro_write(chip, reg, data); 584 spin_unlock_irqrestore(&chip->reg_lock, flags); 585 } 586 587 /* no spinlock */ 588 static u16 __maestro_read(struct es1968 *chip, u16 reg) 589 { 590 if (READABLE_MAP & (1 << reg)) { 591 outw(reg, chip->io_port + ESM_INDEX); 592 chip->maestro_map[reg] = inw(chip->io_port + ESM_DATA); 593 } 594 return chip->maestro_map[reg]; 595 } 596 597 static inline u16 maestro_read(struct es1968 *chip, u16 reg) 598 { 599 unsigned long flags; 600 u16 result; 601 spin_lock_irqsave(&chip->reg_lock, flags); 602 result = __maestro_read(chip, reg); 603 spin_unlock_irqrestore(&chip->reg_lock, flags); 604 return result; 605 } 606 607 /* Wait for the codec bus to be free */ 608 static int snd_es1968_ac97_wait(struct es1968 *chip) 609 { 610 int timeout = 100000; 611 612 while (timeout-- > 0) { 613 if (!(inb(chip->io_port + ESM_AC97_INDEX) & 1)) 614 return 0; 615 cond_resched(); 616 } 617 dev_dbg(chip->card->dev, "ac97 timeout\n"); 618 return 1; /* timeout */ 619 } 620 621 static int snd_es1968_ac97_wait_poll(struct es1968 *chip) 622 { 623 int timeout = 100000; 624 625 while (timeout-- > 0) { 626 if (!(inb(chip->io_port + ESM_AC97_INDEX) & 1)) 627 return 0; 628 } 629 dev_dbg(chip->card->dev, "ac97 timeout\n"); 630 return 1; /* timeout */ 631 } 632 633 static void snd_es1968_ac97_write(struct snd_ac97 *ac97, unsigned short reg, unsigned short val) 634 { 635 struct es1968 *chip = ac97->private_data; 636 637 snd_es1968_ac97_wait(chip); 638 639 /* Write the bus */ 640 outw(val, chip->io_port + ESM_AC97_DATA); 641 /*msleep(1);*/ 642 outb(reg, chip->io_port + ESM_AC97_INDEX); 643 /*msleep(1);*/ 644 } 645 646 static unsigned short snd_es1968_ac97_read(struct snd_ac97 *ac97, unsigned short reg) 647 { 648 u16 data = 0; 649 struct es1968 *chip = ac97->private_data; 650 651 snd_es1968_ac97_wait(chip); 652 653 outb(reg | 0x80, chip->io_port + ESM_AC97_INDEX); 654 /*msleep(1);*/ 655 656 if (!snd_es1968_ac97_wait_poll(chip)) { 657 data = inw(chip->io_port + ESM_AC97_DATA); 658 /*msleep(1);*/ 659 } 660 661 return data; 662 } 663 664 /* no spinlock */ 665 static void apu_index_set(struct es1968 *chip, u16 index) 666 { 667 int i; 668 __maestro_write(chip, IDR1_CRAM_POINTER, index); 669 for (i = 0; i < 1000; i++) 670 if (__maestro_read(chip, IDR1_CRAM_POINTER) == index) 671 return; 672 dev_dbg(chip->card->dev, "APU register select failed. (Timeout)\n"); 673 } 674 675 /* no spinlock */ 676 static void apu_data_set(struct es1968 *chip, u16 data) 677 { 678 int i; 679 for (i = 0; i < 1000; i++) { 680 if (__maestro_read(chip, IDR0_DATA_PORT) == data) 681 return; 682 __maestro_write(chip, IDR0_DATA_PORT, data); 683 } 684 dev_dbg(chip->card->dev, "APU register set probably failed (Timeout)!\n"); 685 } 686 687 /* no spinlock */ 688 static void __apu_set_register(struct es1968 *chip, u16 channel, u8 reg, u16 data) 689 { 690 if (snd_BUG_ON(channel >= NR_APUS)) 691 return; 692 #ifdef CONFIG_PM_SLEEP 693 chip->apu_map[channel][reg] = data; 694 #endif 695 reg |= (channel << 4); 696 apu_index_set(chip, reg); 697 apu_data_set(chip, data); 698 } 699 700 static void apu_set_register(struct es1968 *chip, u16 channel, u8 reg, u16 data) 701 { 702 unsigned long flags; 703 spin_lock_irqsave(&chip->reg_lock, flags); 704 __apu_set_register(chip, channel, reg, data); 705 spin_unlock_irqrestore(&chip->reg_lock, flags); 706 } 707 708 static u16 __apu_get_register(struct es1968 *chip, u16 channel, u8 reg) 709 { 710 if (snd_BUG_ON(channel >= NR_APUS)) 711 return 0; 712 reg |= (channel << 4); 713 apu_index_set(chip, reg); 714 return __maestro_read(chip, IDR0_DATA_PORT); 715 } 716 717 static u16 apu_get_register(struct es1968 *chip, u16 channel, u8 reg) 718 { 719 unsigned long flags; 720 u16 v; 721 spin_lock_irqsave(&chip->reg_lock, flags); 722 v = __apu_get_register(chip, channel, reg); 723 spin_unlock_irqrestore(&chip->reg_lock, flags); 724 return v; 725 } 726 727 #if 0 /* ASSP is not supported */ 728 729 static void assp_set_register(struct es1968 *chip, u32 reg, u32 value) 730 { 731 unsigned long flags; 732 733 spin_lock_irqsave(&chip->reg_lock, flags); 734 outl(reg, chip->io_port + ASSP_INDEX); 735 outl(value, chip->io_port + ASSP_DATA); 736 spin_unlock_irqrestore(&chip->reg_lock, flags); 737 } 738 739 static u32 assp_get_register(struct es1968 *chip, u32 reg) 740 { 741 unsigned long flags; 742 u32 value; 743 744 spin_lock_irqsave(&chip->reg_lock, flags); 745 outl(reg, chip->io_port + ASSP_INDEX); 746 value = inl(chip->io_port + ASSP_DATA); 747 spin_unlock_irqrestore(&chip->reg_lock, flags); 748 749 return value; 750 } 751 752 #endif 753 754 static void wave_set_register(struct es1968 *chip, u16 reg, u16 value) 755 { 756 unsigned long flags; 757 758 spin_lock_irqsave(&chip->reg_lock, flags); 759 outw(reg, chip->io_port + WC_INDEX); 760 outw(value, chip->io_port + WC_DATA); 761 spin_unlock_irqrestore(&chip->reg_lock, flags); 762 } 763 764 static u16 wave_get_register(struct es1968 *chip, u16 reg) 765 { 766 unsigned long flags; 767 u16 value; 768 769 spin_lock_irqsave(&chip->reg_lock, flags); 770 outw(reg, chip->io_port + WC_INDEX); 771 value = inw(chip->io_port + WC_DATA); 772 spin_unlock_irqrestore(&chip->reg_lock, flags); 773 774 return value; 775 } 776 777 /* ******************* 778 * Bob the Timer! * 779 *******************/ 780 781 static void snd_es1968_bob_stop(struct es1968 *chip) 782 { 783 u16 reg; 784 785 reg = __maestro_read(chip, 0x11); 786 reg &= ~ESM_BOB_ENABLE; 787 __maestro_write(chip, 0x11, reg); 788 reg = __maestro_read(chip, 0x17); 789 reg &= ~ESM_BOB_START; 790 __maestro_write(chip, 0x17, reg); 791 } 792 793 static void snd_es1968_bob_start(struct es1968 *chip) 794 { 795 int prescale; 796 int divide; 797 798 /* compute ideal interrupt frequency for buffer size & play rate */ 799 /* first, find best prescaler value to match freq */ 800 for (prescale = 5; prescale < 12; prescale++) 801 if (chip->bob_freq > (ESS_SYSCLK >> (prescale + 9))) 802 break; 803 804 /* next, back off prescaler whilst getting divider into optimum range */ 805 divide = 1; 806 while ((prescale > 5) && (divide < 32)) { 807 prescale--; 808 divide <<= 1; 809 } 810 divide >>= 1; 811 812 /* now fine-tune the divider for best match */ 813 for (; divide < 31; divide++) 814 if (chip->bob_freq > 815 ((ESS_SYSCLK >> (prescale + 9)) / (divide + 1))) break; 816 817 /* divide = 0 is illegal, but don't let prescale = 4! */ 818 if (divide == 0) { 819 divide++; 820 if (prescale > 5) 821 prescale--; 822 } else if (divide > 1) 823 divide--; 824 825 __maestro_write(chip, 6, 0x9000 | (prescale << 5) | divide); /* set reg */ 826 827 /* Now set IDR 11/17 */ 828 __maestro_write(chip, 0x11, __maestro_read(chip, 0x11) | 1); 829 __maestro_write(chip, 0x17, __maestro_read(chip, 0x17) | 1); 830 } 831 832 /* call with substream spinlock */ 833 static void snd_es1968_bob_inc(struct es1968 *chip, int freq) 834 { 835 chip->bobclient++; 836 if (chip->bobclient == 1) { 837 chip->bob_freq = freq; 838 snd_es1968_bob_start(chip); 839 } else if (chip->bob_freq < freq) { 840 snd_es1968_bob_stop(chip); 841 chip->bob_freq = freq; 842 snd_es1968_bob_start(chip); 843 } 844 } 845 846 /* call with substream spinlock */ 847 static void snd_es1968_bob_dec(struct es1968 *chip) 848 { 849 chip->bobclient--; 850 if (chip->bobclient <= 0) 851 snd_es1968_bob_stop(chip); 852 else if (chip->bob_freq > ESM_BOB_FREQ) { 853 /* check reduction of timer frequency */ 854 int max_freq = ESM_BOB_FREQ; 855 struct esschan *es; 856 list_for_each_entry(es, &chip->substream_list, list) { 857 if (max_freq < es->bob_freq) 858 max_freq = es->bob_freq; 859 } 860 if (max_freq != chip->bob_freq) { 861 snd_es1968_bob_stop(chip); 862 chip->bob_freq = max_freq; 863 snd_es1968_bob_start(chip); 864 } 865 } 866 } 867 868 static int 869 snd_es1968_calc_bob_rate(struct es1968 *chip, struct esschan *es, 870 struct snd_pcm_runtime *runtime) 871 { 872 /* we acquire 4 interrupts per period for precise control.. */ 873 int freq = runtime->rate * 4; 874 if (es->fmt & ESS_FMT_STEREO) 875 freq <<= 1; 876 if (es->fmt & ESS_FMT_16BIT) 877 freq <<= 1; 878 freq /= es->frag_size; 879 if (freq < ESM_BOB_FREQ) 880 freq = ESM_BOB_FREQ; 881 else if (freq > ESM_BOB_FREQ_MAX) 882 freq = ESM_BOB_FREQ_MAX; 883 return freq; 884 } 885 886 887 /************* 888 * PCM Part * 889 *************/ 890 891 static u32 snd_es1968_compute_rate(struct es1968 *chip, u32 freq) 892 { 893 u32 rate = (freq << 16) / chip->clock; 894 #if 0 /* XXX: do we need this? */ 895 if (rate > 0x10000) 896 rate = 0x10000; 897 #endif 898 return rate; 899 } 900 901 /* get current pointer */ 902 static inline unsigned int 903 snd_es1968_get_dma_ptr(struct es1968 *chip, struct esschan *es) 904 { 905 unsigned int offset; 906 907 offset = apu_get_register(chip, es->apu[0], 5); 908 909 offset -= es->base[0]; 910 911 return (offset & 0xFFFE); /* hardware is in words */ 912 } 913 914 static void snd_es1968_apu_set_freq(struct es1968 *chip, int apu, int freq) 915 { 916 apu_set_register(chip, apu, 2, 917 (apu_get_register(chip, apu, 2) & 0x00FF) | 918 ((freq & 0xff) << 8) | 0x10); 919 apu_set_register(chip, apu, 3, freq >> 8); 920 } 921 922 /* spin lock held */ 923 static inline void snd_es1968_trigger_apu(struct es1968 *esm, int apu, int mode) 924 { 925 /* set the APU mode */ 926 __apu_set_register(esm, apu, 0, 927 (__apu_get_register(esm, apu, 0) & 0xff0f) | 928 (mode << 4)); 929 } 930 931 static void snd_es1968_pcm_start(struct es1968 *chip, struct esschan *es) 932 { 933 spin_lock(&chip->reg_lock); 934 __apu_set_register(chip, es->apu[0], 5, es->base[0]); 935 snd_es1968_trigger_apu(chip, es->apu[0], es->apu_mode[0]); 936 if (es->mode == ESM_MODE_CAPTURE) { 937 __apu_set_register(chip, es->apu[2], 5, es->base[2]); 938 snd_es1968_trigger_apu(chip, es->apu[2], es->apu_mode[2]); 939 } 940 if (es->fmt & ESS_FMT_STEREO) { 941 __apu_set_register(chip, es->apu[1], 5, es->base[1]); 942 snd_es1968_trigger_apu(chip, es->apu[1], es->apu_mode[1]); 943 if (es->mode == ESM_MODE_CAPTURE) { 944 __apu_set_register(chip, es->apu[3], 5, es->base[3]); 945 snd_es1968_trigger_apu(chip, es->apu[3], es->apu_mode[3]); 946 } 947 } 948 spin_unlock(&chip->reg_lock); 949 } 950 951 static void snd_es1968_pcm_stop(struct es1968 *chip, struct esschan *es) 952 { 953 spin_lock(&chip->reg_lock); 954 snd_es1968_trigger_apu(chip, es->apu[0], 0); 955 snd_es1968_trigger_apu(chip, es->apu[1], 0); 956 if (es->mode == ESM_MODE_CAPTURE) { 957 snd_es1968_trigger_apu(chip, es->apu[2], 0); 958 snd_es1968_trigger_apu(chip, es->apu[3], 0); 959 } 960 spin_unlock(&chip->reg_lock); 961 } 962 963 /* set the wavecache control reg */ 964 static void snd_es1968_program_wavecache(struct es1968 *chip, struct esschan *es, 965 int channel, u32 addr, int capture) 966 { 967 u32 tmpval = (addr - 0x10) & 0xFFF8; 968 969 if (! capture) { 970 if (!(es->fmt & ESS_FMT_16BIT)) 971 tmpval |= 4; /* 8bit */ 972 if (es->fmt & ESS_FMT_STEREO) 973 tmpval |= 2; /* stereo */ 974 } 975 976 /* set the wavecache control reg */ 977 wave_set_register(chip, es->apu[channel] << 3, tmpval); 978 979 #ifdef CONFIG_PM_SLEEP 980 es->wc_map[channel] = tmpval; 981 #endif 982 } 983 984 985 static void snd_es1968_playback_setup(struct es1968 *chip, struct esschan *es, 986 struct snd_pcm_runtime *runtime) 987 { 988 u32 pa; 989 int high_apu = 0; 990 int channel, apu; 991 int i, size; 992 unsigned long flags; 993 u32 freq; 994 995 size = es->dma_size >> es->wav_shift; 996 997 if (es->fmt & ESS_FMT_STEREO) 998 high_apu++; 999 1000 for (channel = 0; channel <= high_apu; channel++) { 1001 apu = es->apu[channel]; 1002 1003 snd_es1968_program_wavecache(chip, es, channel, es->memory->buf.addr, 0); 1004 1005 /* Offset to PCMBAR */ 1006 pa = es->memory->buf.addr; 1007 pa -= chip->dma.addr; 1008 pa >>= 1; /* words */ 1009 1010 pa |= 0x00400000; /* System RAM (Bit 22) */ 1011 1012 if (es->fmt & ESS_FMT_STEREO) { 1013 /* Enable stereo */ 1014 if (channel) 1015 pa |= 0x00800000; /* (Bit 23) */ 1016 if (es->fmt & ESS_FMT_16BIT) 1017 pa >>= 1; 1018 } 1019 1020 /* base offset of dma calcs when reading the pointer 1021 on this left one */ 1022 es->base[channel] = pa & 0xFFFF; 1023 1024 for (i = 0; i < 16; i++) 1025 apu_set_register(chip, apu, i, 0x0000); 1026 1027 /* Load the buffer into the wave engine */ 1028 apu_set_register(chip, apu, 4, ((pa >> 16) & 0xFF) << 8); 1029 apu_set_register(chip, apu, 5, pa & 0xFFFF); 1030 apu_set_register(chip, apu, 6, (pa + size) & 0xFFFF); 1031 /* setting loop == sample len */ 1032 apu_set_register(chip, apu, 7, size); 1033 1034 /* clear effects/env.. */ 1035 apu_set_register(chip, apu, 8, 0x0000); 1036 /* set amp now to 0xd0 (?), low byte is 'amplitude dest'? */ 1037 apu_set_register(chip, apu, 9, 0xD000); 1038 1039 /* clear routing stuff */ 1040 apu_set_register(chip, apu, 11, 0x0000); 1041 /* dma on, no envelopes, filter to all 1s) */ 1042 apu_set_register(chip, apu, 0, 0x400F); 1043 1044 if (es->fmt & ESS_FMT_16BIT) 1045 es->apu_mode[channel] = ESM_APU_16BITLINEAR; 1046 else 1047 es->apu_mode[channel] = ESM_APU_8BITLINEAR; 1048 1049 if (es->fmt & ESS_FMT_STEREO) { 1050 /* set panning: left or right */ 1051 /* Check: different panning. On my Canyon 3D Chipset the 1052 Channels are swapped. I don't know, about the output 1053 to the SPDif Link. Perhaps you have to change this 1054 and not the APU Regs 4-5. */ 1055 apu_set_register(chip, apu, 10, 1056 0x8F00 | (channel ? 0 : 0x10)); 1057 es->apu_mode[channel] += 1; /* stereo */ 1058 } else 1059 apu_set_register(chip, apu, 10, 0x8F08); 1060 } 1061 1062 spin_lock_irqsave(&chip->reg_lock, flags); 1063 /* clear WP interrupts */ 1064 outw(1, chip->io_port + 0x04); 1065 /* enable WP ints */ 1066 outw(inw(chip->io_port + ESM_PORT_HOST_IRQ) | ESM_HIRQ_DSIE, chip->io_port + ESM_PORT_HOST_IRQ); 1067 spin_unlock_irqrestore(&chip->reg_lock, flags); 1068 1069 freq = runtime->rate; 1070 /* set frequency */ 1071 if (freq > 48000) 1072 freq = 48000; 1073 if (freq < 4000) 1074 freq = 4000; 1075 1076 /* hmmm.. */ 1077 if (!(es->fmt & ESS_FMT_16BIT) && !(es->fmt & ESS_FMT_STEREO)) 1078 freq >>= 1; 1079 1080 freq = snd_es1968_compute_rate(chip, freq); 1081 1082 /* Load the frequency, turn on 6dB */ 1083 snd_es1968_apu_set_freq(chip, es->apu[0], freq); 1084 snd_es1968_apu_set_freq(chip, es->apu[1], freq); 1085 } 1086 1087 1088 static void init_capture_apu(struct es1968 *chip, struct esschan *es, int channel, 1089 unsigned int pa, unsigned int bsize, 1090 int mode, int route) 1091 { 1092 int i, apu = es->apu[channel]; 1093 1094 es->apu_mode[channel] = mode; 1095 1096 /* set the wavecache control reg */ 1097 snd_es1968_program_wavecache(chip, es, channel, pa, 1); 1098 1099 /* Offset to PCMBAR */ 1100 pa -= chip->dma.addr; 1101 pa >>= 1; /* words */ 1102 1103 /* base offset of dma calcs when reading the pointer 1104 on this left one */ 1105 es->base[channel] = pa & 0xFFFF; 1106 pa |= 0x00400000; /* bit 22 -> System RAM */ 1107 1108 /* Begin loading the APU */ 1109 for (i = 0; i < 16; i++) 1110 apu_set_register(chip, apu, i, 0x0000); 1111 1112 /* need to enable subgroups.. and we should probably 1113 have different groups for different /dev/dsps.. */ 1114 apu_set_register(chip, apu, 2, 0x8); 1115 1116 /* Load the buffer into the wave engine */ 1117 apu_set_register(chip, apu, 4, ((pa >> 16) & 0xFF) << 8); 1118 apu_set_register(chip, apu, 5, pa & 0xFFFF); 1119 apu_set_register(chip, apu, 6, (pa + bsize) & 0xFFFF); 1120 apu_set_register(chip, apu, 7, bsize); 1121 /* clear effects/env.. */ 1122 apu_set_register(chip, apu, 8, 0x00F0); 1123 /* amplitude now? sure. why not. */ 1124 apu_set_register(chip, apu, 9, 0x0000); 1125 /* set filter tune, radius, polar pan */ 1126 apu_set_register(chip, apu, 10, 0x8F08); 1127 /* route input */ 1128 apu_set_register(chip, apu, 11, route); 1129 /* dma on, no envelopes, filter to all 1s) */ 1130 apu_set_register(chip, apu, 0, 0x400F); 1131 } 1132 1133 static void snd_es1968_capture_setup(struct es1968 *chip, struct esschan *es, 1134 struct snd_pcm_runtime *runtime) 1135 { 1136 int size; 1137 u32 freq; 1138 unsigned long flags; 1139 1140 size = es->dma_size >> es->wav_shift; 1141 1142 /* APU assignments: 1143 0 = mono/left SRC 1144 1 = right SRC 1145 2 = mono/left Input Mixer 1146 3 = right Input Mixer 1147 */ 1148 /* data seems to flow from the codec, through an apu into 1149 the 'mixbuf' bit of page, then through the SRC apu 1150 and out to the real 'buffer'. ok. sure. */ 1151 1152 /* input mixer (left/mono) */ 1153 /* parallel in crap, see maestro reg 0xC [8-11] */ 1154 init_capture_apu(chip, es, 2, 1155 es->mixbuf->buf.addr, ESM_MIXBUF_SIZE/4, /* in words */ 1156 ESM_APU_INPUTMIXER, 0x14); 1157 /* SRC (left/mono); get input from inputing apu */ 1158 init_capture_apu(chip, es, 0, es->memory->buf.addr, size, 1159 ESM_APU_SRCONVERTOR, es->apu[2]); 1160 if (es->fmt & ESS_FMT_STEREO) { 1161 /* input mixer (right) */ 1162 init_capture_apu(chip, es, 3, 1163 es->mixbuf->buf.addr + ESM_MIXBUF_SIZE/2, 1164 ESM_MIXBUF_SIZE/4, /* in words */ 1165 ESM_APU_INPUTMIXER, 0x15); 1166 /* SRC (right) */ 1167 init_capture_apu(chip, es, 1, 1168 es->memory->buf.addr + size*2, size, 1169 ESM_APU_SRCONVERTOR, es->apu[3]); 1170 } 1171 1172 freq = runtime->rate; 1173 /* Sample Rate conversion APUs don't like 0x10000 for their rate */ 1174 if (freq > 47999) 1175 freq = 47999; 1176 if (freq < 4000) 1177 freq = 4000; 1178 1179 freq = snd_es1968_compute_rate(chip, freq); 1180 1181 /* Load the frequency, turn on 6dB */ 1182 snd_es1968_apu_set_freq(chip, es->apu[0], freq); 1183 snd_es1968_apu_set_freq(chip, es->apu[1], freq); 1184 1185 /* fix mixer rate at 48khz. and its _must_ be 0x10000. */ 1186 freq = 0x10000; 1187 snd_es1968_apu_set_freq(chip, es->apu[2], freq); 1188 snd_es1968_apu_set_freq(chip, es->apu[3], freq); 1189 1190 spin_lock_irqsave(&chip->reg_lock, flags); 1191 /* clear WP interrupts */ 1192 outw(1, chip->io_port + 0x04); 1193 /* enable WP ints */ 1194 outw(inw(chip->io_port + ESM_PORT_HOST_IRQ) | ESM_HIRQ_DSIE, chip->io_port + ESM_PORT_HOST_IRQ); 1195 spin_unlock_irqrestore(&chip->reg_lock, flags); 1196 } 1197 1198 /******************* 1199 * ALSA Interface * 1200 *******************/ 1201 1202 static int snd_es1968_pcm_prepare(struct snd_pcm_substream *substream) 1203 { 1204 struct es1968 *chip = snd_pcm_substream_chip(substream); 1205 struct snd_pcm_runtime *runtime = substream->runtime; 1206 struct esschan *es = runtime->private_data; 1207 1208 es->dma_size = snd_pcm_lib_buffer_bytes(substream); 1209 es->frag_size = snd_pcm_lib_period_bytes(substream); 1210 1211 es->wav_shift = 1; /* maestro handles always 16bit */ 1212 es->fmt = 0; 1213 if (snd_pcm_format_width(runtime->format) == 16) 1214 es->fmt |= ESS_FMT_16BIT; 1215 if (runtime->channels > 1) { 1216 es->fmt |= ESS_FMT_STEREO; 1217 if (es->fmt & ESS_FMT_16BIT) /* 8bit is already word shifted */ 1218 es->wav_shift++; 1219 } 1220 es->bob_freq = snd_es1968_calc_bob_rate(chip, es, runtime); 1221 1222 switch (es->mode) { 1223 case ESM_MODE_PLAY: 1224 snd_es1968_playback_setup(chip, es, runtime); 1225 break; 1226 case ESM_MODE_CAPTURE: 1227 snd_es1968_capture_setup(chip, es, runtime); 1228 break; 1229 } 1230 1231 return 0; 1232 } 1233 1234 static int snd_es1968_pcm_trigger(struct snd_pcm_substream *substream, int cmd) 1235 { 1236 struct es1968 *chip = snd_pcm_substream_chip(substream); 1237 struct esschan *es = substream->runtime->private_data; 1238 1239 spin_lock(&chip->substream_lock); 1240 switch (cmd) { 1241 case SNDRV_PCM_TRIGGER_START: 1242 case SNDRV_PCM_TRIGGER_RESUME: 1243 if (es->running) 1244 break; 1245 snd_es1968_bob_inc(chip, es->bob_freq); 1246 es->count = 0; 1247 es->hwptr = 0; 1248 snd_es1968_pcm_start(chip, es); 1249 es->running = 1; 1250 break; 1251 case SNDRV_PCM_TRIGGER_STOP: 1252 case SNDRV_PCM_TRIGGER_SUSPEND: 1253 if (! es->running) 1254 break; 1255 snd_es1968_pcm_stop(chip, es); 1256 es->running = 0; 1257 snd_es1968_bob_dec(chip); 1258 break; 1259 } 1260 spin_unlock(&chip->substream_lock); 1261 return 0; 1262 } 1263 1264 static snd_pcm_uframes_t snd_es1968_pcm_pointer(struct snd_pcm_substream *substream) 1265 { 1266 struct es1968 *chip = snd_pcm_substream_chip(substream); 1267 struct esschan *es = substream->runtime->private_data; 1268 unsigned int ptr; 1269 1270 ptr = snd_es1968_get_dma_ptr(chip, es) << es->wav_shift; 1271 1272 return bytes_to_frames(substream->runtime, ptr % es->dma_size); 1273 } 1274 1275 static const struct snd_pcm_hardware snd_es1968_playback = { 1276 .info = (SNDRV_PCM_INFO_MMAP | 1277 SNDRV_PCM_INFO_MMAP_VALID | 1278 SNDRV_PCM_INFO_INTERLEAVED | 1279 SNDRV_PCM_INFO_BLOCK_TRANSFER | 1280 /*SNDRV_PCM_INFO_PAUSE |*/ 1281 SNDRV_PCM_INFO_RESUME), 1282 .formats = SNDRV_PCM_FMTBIT_U8 | SNDRV_PCM_FMTBIT_S16_LE, 1283 .rates = SNDRV_PCM_RATE_CONTINUOUS | SNDRV_PCM_RATE_8000_48000, 1284 .rate_min = 4000, 1285 .rate_max = 48000, 1286 .channels_min = 1, 1287 .channels_max = 2, 1288 .buffer_bytes_max = 65536, 1289 .period_bytes_min = 256, 1290 .period_bytes_max = 65536, 1291 .periods_min = 1, 1292 .periods_max = 1024, 1293 .fifo_size = 0, 1294 }; 1295 1296 static const struct snd_pcm_hardware snd_es1968_capture = { 1297 .info = (SNDRV_PCM_INFO_NONINTERLEAVED | 1298 SNDRV_PCM_INFO_MMAP | 1299 SNDRV_PCM_INFO_MMAP_VALID | 1300 SNDRV_PCM_INFO_BLOCK_TRANSFER | 1301 /*SNDRV_PCM_INFO_PAUSE |*/ 1302 SNDRV_PCM_INFO_RESUME), 1303 .formats = /*SNDRV_PCM_FMTBIT_U8 |*/ SNDRV_PCM_FMTBIT_S16_LE, 1304 .rates = SNDRV_PCM_RATE_CONTINUOUS | SNDRV_PCM_RATE_8000_48000, 1305 .rate_min = 4000, 1306 .rate_max = 48000, 1307 .channels_min = 1, 1308 .channels_max = 2, 1309 .buffer_bytes_max = 65536, 1310 .period_bytes_min = 256, 1311 .period_bytes_max = 65536, 1312 .periods_min = 1, 1313 .periods_max = 1024, 1314 .fifo_size = 0, 1315 }; 1316 1317 /* ************************* 1318 * DMA memory management * 1319 *************************/ 1320 1321 /* Because the Maestro can only take addresses relative to the PCM base address 1322 register :( */ 1323 1324 static int calc_available_memory_size(struct es1968 *chip) 1325 { 1326 int max_size = 0; 1327 struct esm_memory *buf; 1328 1329 mutex_lock(&chip->memory_mutex); 1330 list_for_each_entry(buf, &chip->buf_list, list) { 1331 if (buf->empty && buf->buf.bytes > max_size) 1332 max_size = buf->buf.bytes; 1333 } 1334 mutex_unlock(&chip->memory_mutex); 1335 if (max_size >= 128*1024) 1336 max_size = 127*1024; 1337 return max_size; 1338 } 1339 1340 /* allocate a new memory chunk with the specified size */ 1341 static struct esm_memory *snd_es1968_new_memory(struct es1968 *chip, int size) 1342 { 1343 struct esm_memory *buf; 1344 1345 size = ALIGN(size, ESM_MEM_ALIGN); 1346 mutex_lock(&chip->memory_mutex); 1347 list_for_each_entry(buf, &chip->buf_list, list) { 1348 if (buf->empty && buf->buf.bytes >= size) 1349 goto __found; 1350 } 1351 mutex_unlock(&chip->memory_mutex); 1352 return NULL; 1353 1354 __found: 1355 if (buf->buf.bytes > size) { 1356 struct esm_memory *chunk = kmalloc(sizeof(*chunk), GFP_KERNEL); 1357 if (chunk == NULL) { 1358 mutex_unlock(&chip->memory_mutex); 1359 return NULL; 1360 } 1361 chunk->buf = buf->buf; 1362 chunk->buf.bytes -= size; 1363 chunk->buf.area += size; 1364 chunk->buf.addr += size; 1365 chunk->empty = 1; 1366 buf->buf.bytes = size; 1367 list_add(&chunk->list, &buf->list); 1368 } 1369 buf->empty = 0; 1370 mutex_unlock(&chip->memory_mutex); 1371 return buf; 1372 } 1373 1374 /* free a memory chunk */ 1375 static void snd_es1968_free_memory(struct es1968 *chip, struct esm_memory *buf) 1376 { 1377 struct esm_memory *chunk; 1378 1379 mutex_lock(&chip->memory_mutex); 1380 buf->empty = 1; 1381 if (buf->list.prev != &chip->buf_list) { 1382 chunk = list_entry(buf->list.prev, struct esm_memory, list); 1383 if (chunk->empty) { 1384 chunk->buf.bytes += buf->buf.bytes; 1385 list_del(&buf->list); 1386 kfree(buf); 1387 buf = chunk; 1388 } 1389 } 1390 if (buf->list.next != &chip->buf_list) { 1391 chunk = list_entry(buf->list.next, struct esm_memory, list); 1392 if (chunk->empty) { 1393 buf->buf.bytes += chunk->buf.bytes; 1394 list_del(&chunk->list); 1395 kfree(chunk); 1396 } 1397 } 1398 mutex_unlock(&chip->memory_mutex); 1399 } 1400 1401 static void snd_es1968_free_dmabuf(struct es1968 *chip) 1402 { 1403 struct list_head *p; 1404 1405 if (! chip->dma.area) 1406 return; 1407 snd_dma_free_pages(&chip->dma); 1408 while ((p = chip->buf_list.next) != &chip->buf_list) { 1409 struct esm_memory *chunk = list_entry(p, struct esm_memory, list); 1410 list_del(p); 1411 kfree(chunk); 1412 } 1413 } 1414 1415 static int 1416 snd_es1968_init_dmabuf(struct es1968 *chip) 1417 { 1418 int err; 1419 struct esm_memory *chunk; 1420 1421 err = snd_dma_alloc_pages_fallback(SNDRV_DMA_TYPE_DEV, 1422 &chip->pci->dev, 1423 chip->total_bufsize, &chip->dma); 1424 if (err < 0 || ! chip->dma.area) { 1425 dev_err(chip->card->dev, 1426 "can't allocate dma pages for size %d\n", 1427 chip->total_bufsize); 1428 return -ENOMEM; 1429 } 1430 if ((chip->dma.addr + chip->dma.bytes - 1) & ~((1 << 28) - 1)) { 1431 snd_dma_free_pages(&chip->dma); 1432 dev_err(chip->card->dev, "DMA buffer beyond 256MB.\n"); 1433 return -ENOMEM; 1434 } 1435 1436 INIT_LIST_HEAD(&chip->buf_list); 1437 /* allocate an empty chunk */ 1438 chunk = kmalloc(sizeof(*chunk), GFP_KERNEL); 1439 if (chunk == NULL) { 1440 snd_es1968_free_dmabuf(chip); 1441 return -ENOMEM; 1442 } 1443 memset(chip->dma.area, 0, ESM_MEM_ALIGN); 1444 chunk->buf = chip->dma; 1445 chunk->buf.area += ESM_MEM_ALIGN; 1446 chunk->buf.addr += ESM_MEM_ALIGN; 1447 chunk->buf.bytes -= ESM_MEM_ALIGN; 1448 chunk->empty = 1; 1449 list_add(&chunk->list, &chip->buf_list); 1450 1451 return 0; 1452 } 1453 1454 /* setup the dma_areas */ 1455 /* buffer is extracted from the pre-allocated memory chunk */ 1456 static int snd_es1968_hw_params(struct snd_pcm_substream *substream, 1457 struct snd_pcm_hw_params *hw_params) 1458 { 1459 struct es1968 *chip = snd_pcm_substream_chip(substream); 1460 struct snd_pcm_runtime *runtime = substream->runtime; 1461 struct esschan *chan = runtime->private_data; 1462 int size = params_buffer_bytes(hw_params); 1463 1464 if (chan->memory) { 1465 if (chan->memory->buf.bytes >= size) { 1466 runtime->dma_bytes = size; 1467 return 0; 1468 } 1469 snd_es1968_free_memory(chip, chan->memory); 1470 } 1471 chan->memory = snd_es1968_new_memory(chip, size); 1472 if (chan->memory == NULL) { 1473 dev_dbg(chip->card->dev, 1474 "cannot allocate dma buffer: size = %d\n", size); 1475 return -ENOMEM; 1476 } 1477 snd_pcm_set_runtime_buffer(substream, &chan->memory->buf); 1478 return 1; /* area was changed */ 1479 } 1480 1481 /* remove dma areas if allocated */ 1482 static int snd_es1968_hw_free(struct snd_pcm_substream *substream) 1483 { 1484 struct es1968 *chip = snd_pcm_substream_chip(substream); 1485 struct snd_pcm_runtime *runtime = substream->runtime; 1486 struct esschan *chan; 1487 1488 if (runtime->private_data == NULL) 1489 return 0; 1490 chan = runtime->private_data; 1491 if (chan->memory) { 1492 snd_es1968_free_memory(chip, chan->memory); 1493 chan->memory = NULL; 1494 } 1495 return 0; 1496 } 1497 1498 1499 /* 1500 * allocate APU pair 1501 */ 1502 static int snd_es1968_alloc_apu_pair(struct es1968 *chip, int type) 1503 { 1504 int apu; 1505 1506 for (apu = 0; apu < NR_APUS; apu += 2) { 1507 if (chip->apu[apu] == ESM_APU_FREE && 1508 chip->apu[apu + 1] == ESM_APU_FREE) { 1509 chip->apu[apu] = chip->apu[apu + 1] = type; 1510 return apu; 1511 } 1512 } 1513 return -EBUSY; 1514 } 1515 1516 /* 1517 * release APU pair 1518 */ 1519 static void snd_es1968_free_apu_pair(struct es1968 *chip, int apu) 1520 { 1521 chip->apu[apu] = chip->apu[apu + 1] = ESM_APU_FREE; 1522 } 1523 1524 1525 /****************** 1526 * PCM open/close * 1527 ******************/ 1528 1529 static int snd_es1968_playback_open(struct snd_pcm_substream *substream) 1530 { 1531 struct es1968 *chip = snd_pcm_substream_chip(substream); 1532 struct snd_pcm_runtime *runtime = substream->runtime; 1533 struct esschan *es; 1534 int apu1; 1535 1536 /* search 2 APUs */ 1537 apu1 = snd_es1968_alloc_apu_pair(chip, ESM_APU_PCM_PLAY); 1538 if (apu1 < 0) 1539 return apu1; 1540 1541 es = kzalloc(sizeof(*es), GFP_KERNEL); 1542 if (!es) { 1543 snd_es1968_free_apu_pair(chip, apu1); 1544 return -ENOMEM; 1545 } 1546 1547 es->apu[0] = apu1; 1548 es->apu[1] = apu1 + 1; 1549 es->apu_mode[0] = 0; 1550 es->apu_mode[1] = 0; 1551 es->running = 0; 1552 es->substream = substream; 1553 es->mode = ESM_MODE_PLAY; 1554 1555 runtime->private_data = es; 1556 runtime->hw = snd_es1968_playback; 1557 runtime->hw.buffer_bytes_max = runtime->hw.period_bytes_max = 1558 calc_available_memory_size(chip); 1559 1560 spin_lock_irq(&chip->substream_lock); 1561 list_add(&es->list, &chip->substream_list); 1562 spin_unlock_irq(&chip->substream_lock); 1563 1564 return 0; 1565 } 1566 1567 static int snd_es1968_capture_open(struct snd_pcm_substream *substream) 1568 { 1569 struct snd_pcm_runtime *runtime = substream->runtime; 1570 struct es1968 *chip = snd_pcm_substream_chip(substream); 1571 struct esschan *es; 1572 int apu1, apu2; 1573 1574 apu1 = snd_es1968_alloc_apu_pair(chip, ESM_APU_PCM_CAPTURE); 1575 if (apu1 < 0) 1576 return apu1; 1577 apu2 = snd_es1968_alloc_apu_pair(chip, ESM_APU_PCM_RATECONV); 1578 if (apu2 < 0) { 1579 snd_es1968_free_apu_pair(chip, apu1); 1580 return apu2; 1581 } 1582 1583 es = kzalloc(sizeof(*es), GFP_KERNEL); 1584 if (!es) { 1585 snd_es1968_free_apu_pair(chip, apu1); 1586 snd_es1968_free_apu_pair(chip, apu2); 1587 return -ENOMEM; 1588 } 1589 1590 es->apu[0] = apu1; 1591 es->apu[1] = apu1 + 1; 1592 es->apu[2] = apu2; 1593 es->apu[3] = apu2 + 1; 1594 es->apu_mode[0] = 0; 1595 es->apu_mode[1] = 0; 1596 es->apu_mode[2] = 0; 1597 es->apu_mode[3] = 0; 1598 es->running = 0; 1599 es->substream = substream; 1600 es->mode = ESM_MODE_CAPTURE; 1601 1602 /* get mixbuffer */ 1603 es->mixbuf = snd_es1968_new_memory(chip, ESM_MIXBUF_SIZE); 1604 if (!es->mixbuf) { 1605 snd_es1968_free_apu_pair(chip, apu1); 1606 snd_es1968_free_apu_pair(chip, apu2); 1607 kfree(es); 1608 return -ENOMEM; 1609 } 1610 memset(es->mixbuf->buf.area, 0, ESM_MIXBUF_SIZE); 1611 1612 runtime->private_data = es; 1613 runtime->hw = snd_es1968_capture; 1614 runtime->hw.buffer_bytes_max = runtime->hw.period_bytes_max = 1615 calc_available_memory_size(chip) - 1024; /* keep MIXBUF size */ 1616 snd_pcm_hw_constraint_pow2(runtime, 0, SNDRV_PCM_HW_PARAM_BUFFER_BYTES); 1617 1618 spin_lock_irq(&chip->substream_lock); 1619 list_add(&es->list, &chip->substream_list); 1620 spin_unlock_irq(&chip->substream_lock); 1621 1622 return 0; 1623 } 1624 1625 static int snd_es1968_playback_close(struct snd_pcm_substream *substream) 1626 { 1627 struct es1968 *chip = snd_pcm_substream_chip(substream); 1628 struct esschan *es; 1629 1630 if (substream->runtime->private_data == NULL) 1631 return 0; 1632 es = substream->runtime->private_data; 1633 spin_lock_irq(&chip->substream_lock); 1634 list_del(&es->list); 1635 spin_unlock_irq(&chip->substream_lock); 1636 snd_es1968_free_apu_pair(chip, es->apu[0]); 1637 kfree(es); 1638 1639 return 0; 1640 } 1641 1642 static int snd_es1968_capture_close(struct snd_pcm_substream *substream) 1643 { 1644 struct es1968 *chip = snd_pcm_substream_chip(substream); 1645 struct esschan *es; 1646 1647 if (substream->runtime->private_data == NULL) 1648 return 0; 1649 es = substream->runtime->private_data; 1650 spin_lock_irq(&chip->substream_lock); 1651 list_del(&es->list); 1652 spin_unlock_irq(&chip->substream_lock); 1653 snd_es1968_free_memory(chip, es->mixbuf); 1654 snd_es1968_free_apu_pair(chip, es->apu[0]); 1655 snd_es1968_free_apu_pair(chip, es->apu[2]); 1656 kfree(es); 1657 1658 return 0; 1659 } 1660 1661 static const struct snd_pcm_ops snd_es1968_playback_ops = { 1662 .open = snd_es1968_playback_open, 1663 .close = snd_es1968_playback_close, 1664 .hw_params = snd_es1968_hw_params, 1665 .hw_free = snd_es1968_hw_free, 1666 .prepare = snd_es1968_pcm_prepare, 1667 .trigger = snd_es1968_pcm_trigger, 1668 .pointer = snd_es1968_pcm_pointer, 1669 }; 1670 1671 static const struct snd_pcm_ops snd_es1968_capture_ops = { 1672 .open = snd_es1968_capture_open, 1673 .close = snd_es1968_capture_close, 1674 .hw_params = snd_es1968_hw_params, 1675 .hw_free = snd_es1968_hw_free, 1676 .prepare = snd_es1968_pcm_prepare, 1677 .trigger = snd_es1968_pcm_trigger, 1678 .pointer = snd_es1968_pcm_pointer, 1679 }; 1680 1681 1682 /* 1683 * measure clock 1684 */ 1685 #define CLOCK_MEASURE_BUFSIZE 16768 /* enough large for a single shot */ 1686 1687 static void es1968_measure_clock(struct es1968 *chip) 1688 { 1689 int i, apu; 1690 unsigned int pa, offset, t; 1691 struct esm_memory *memory; 1692 ktime_t start_time, stop_time; 1693 ktime_t diff; 1694 1695 if (chip->clock == 0) 1696 chip->clock = 48000; /* default clock value */ 1697 1698 /* search 2 APUs (although one apu is enough) */ 1699 apu = snd_es1968_alloc_apu_pair(chip, ESM_APU_PCM_PLAY); 1700 if (apu < 0) { 1701 dev_err(chip->card->dev, "Hmm, cannot find empty APU pair!?\n"); 1702 return; 1703 } 1704 memory = snd_es1968_new_memory(chip, CLOCK_MEASURE_BUFSIZE); 1705 if (!memory) { 1706 dev_warn(chip->card->dev, 1707 "cannot allocate dma buffer - using default clock %d\n", 1708 chip->clock); 1709 snd_es1968_free_apu_pair(chip, apu); 1710 return; 1711 } 1712 1713 memset(memory->buf.area, 0, CLOCK_MEASURE_BUFSIZE); 1714 1715 wave_set_register(chip, apu << 3, (memory->buf.addr - 0x10) & 0xfff8); 1716 1717 pa = (unsigned int)((memory->buf.addr - chip->dma.addr) >> 1); 1718 pa |= 0x00400000; /* System RAM (Bit 22) */ 1719 1720 /* initialize apu */ 1721 for (i = 0; i < 16; i++) 1722 apu_set_register(chip, apu, i, 0x0000); 1723 1724 apu_set_register(chip, apu, 0, 0x400f); 1725 apu_set_register(chip, apu, 4, ((pa >> 16) & 0xff) << 8); 1726 apu_set_register(chip, apu, 5, pa & 0xffff); 1727 apu_set_register(chip, apu, 6, (pa + CLOCK_MEASURE_BUFSIZE/2) & 0xffff); 1728 apu_set_register(chip, apu, 7, CLOCK_MEASURE_BUFSIZE/2); 1729 apu_set_register(chip, apu, 8, 0x0000); 1730 apu_set_register(chip, apu, 9, 0xD000); 1731 apu_set_register(chip, apu, 10, 0x8F08); 1732 apu_set_register(chip, apu, 11, 0x0000); 1733 spin_lock_irq(&chip->reg_lock); 1734 outw(1, chip->io_port + 0x04); /* clear WP interrupts */ 1735 outw(inw(chip->io_port + ESM_PORT_HOST_IRQ) | ESM_HIRQ_DSIE, chip->io_port + ESM_PORT_HOST_IRQ); /* enable WP ints */ 1736 spin_unlock_irq(&chip->reg_lock); 1737 1738 snd_es1968_apu_set_freq(chip, apu, ((unsigned int)48000 << 16) / chip->clock); /* 48000 Hz */ 1739 1740 chip->in_measurement = 1; 1741 chip->measure_apu = apu; 1742 spin_lock_irq(&chip->reg_lock); 1743 snd_es1968_bob_inc(chip, ESM_BOB_FREQ); 1744 __apu_set_register(chip, apu, 5, pa & 0xffff); 1745 snd_es1968_trigger_apu(chip, apu, ESM_APU_16BITLINEAR); 1746 start_time = ktime_get(); 1747 spin_unlock_irq(&chip->reg_lock); 1748 msleep(50); 1749 spin_lock_irq(&chip->reg_lock); 1750 offset = __apu_get_register(chip, apu, 5); 1751 stop_time = ktime_get(); 1752 snd_es1968_trigger_apu(chip, apu, 0); /* stop */ 1753 snd_es1968_bob_dec(chip); 1754 chip->in_measurement = 0; 1755 spin_unlock_irq(&chip->reg_lock); 1756 1757 /* check the current position */ 1758 offset -= (pa & 0xffff); 1759 offset &= 0xfffe; 1760 offset += chip->measure_count * (CLOCK_MEASURE_BUFSIZE/2); 1761 1762 diff = ktime_sub(stop_time, start_time); 1763 t = ktime_to_us(diff); 1764 if (t == 0) { 1765 dev_err(chip->card->dev, "?? calculation error..\n"); 1766 } else { 1767 offset *= 1000; 1768 offset = (offset / t) * 1000 + ((offset % t) * 1000) / t; 1769 if (offset < 47500 || offset > 48500) { 1770 if (offset >= 40000 && offset <= 50000) 1771 chip->clock = (chip->clock * offset) / 48000; 1772 } 1773 dev_info(chip->card->dev, "clocking to %d\n", chip->clock); 1774 } 1775 snd_es1968_free_memory(chip, memory); 1776 snd_es1968_free_apu_pair(chip, apu); 1777 } 1778 1779 1780 /* 1781 */ 1782 1783 static void snd_es1968_pcm_free(struct snd_pcm *pcm) 1784 { 1785 struct es1968 *esm = pcm->private_data; 1786 snd_es1968_free_dmabuf(esm); 1787 esm->pcm = NULL; 1788 } 1789 1790 static int 1791 snd_es1968_pcm(struct es1968 *chip, int device) 1792 { 1793 struct snd_pcm *pcm; 1794 int err; 1795 1796 /* get DMA buffer */ 1797 err = snd_es1968_init_dmabuf(chip); 1798 if (err < 0) 1799 return err; 1800 1801 /* set PCMBAR */ 1802 wave_set_register(chip, 0x01FC, chip->dma.addr >> 12); 1803 wave_set_register(chip, 0x01FD, chip->dma.addr >> 12); 1804 wave_set_register(chip, 0x01FE, chip->dma.addr >> 12); 1805 wave_set_register(chip, 0x01FF, chip->dma.addr >> 12); 1806 1807 err = snd_pcm_new(chip->card, "ESS Maestro", device, 1808 chip->playback_streams, 1809 chip->capture_streams, &pcm); 1810 if (err < 0) 1811 return err; 1812 1813 pcm->private_data = chip; 1814 pcm->private_free = snd_es1968_pcm_free; 1815 1816 snd_pcm_set_ops(pcm, SNDRV_PCM_STREAM_PLAYBACK, &snd_es1968_playback_ops); 1817 snd_pcm_set_ops(pcm, SNDRV_PCM_STREAM_CAPTURE, &snd_es1968_capture_ops); 1818 1819 pcm->info_flags = 0; 1820 1821 strcpy(pcm->name, "ESS Maestro"); 1822 1823 chip->pcm = pcm; 1824 1825 return 0; 1826 } 1827 /* 1828 * suppress jitter on some maestros when playing stereo 1829 */ 1830 static void snd_es1968_suppress_jitter(struct es1968 *chip, struct esschan *es) 1831 { 1832 unsigned int cp1; 1833 unsigned int cp2; 1834 unsigned int diff; 1835 1836 cp1 = __apu_get_register(chip, 0, 5); 1837 cp2 = __apu_get_register(chip, 1, 5); 1838 diff = (cp1 > cp2 ? cp1 - cp2 : cp2 - cp1); 1839 1840 if (diff > 1) 1841 __maestro_write(chip, IDR0_DATA_PORT, cp1); 1842 } 1843 1844 /* 1845 * update pointer 1846 */ 1847 static void snd_es1968_update_pcm(struct es1968 *chip, struct esschan *es) 1848 { 1849 unsigned int hwptr; 1850 unsigned int diff; 1851 struct snd_pcm_substream *subs = es->substream; 1852 1853 if (subs == NULL || !es->running) 1854 return; 1855 1856 hwptr = snd_es1968_get_dma_ptr(chip, es) << es->wav_shift; 1857 hwptr %= es->dma_size; 1858 1859 diff = (es->dma_size + hwptr - es->hwptr) % es->dma_size; 1860 1861 es->hwptr = hwptr; 1862 es->count += diff; 1863 1864 if (es->count > es->frag_size) { 1865 spin_unlock(&chip->substream_lock); 1866 snd_pcm_period_elapsed(subs); 1867 spin_lock(&chip->substream_lock); 1868 es->count %= es->frag_size; 1869 } 1870 } 1871 1872 /* The hardware volume works by incrementing / decrementing 2 counters 1873 (without wrap around) in response to volume button presses and then 1874 generating an interrupt. The pair of counters is stored in bits 1-3 and 5-7 1875 of a byte wide register. The meaning of bits 0 and 4 is unknown. */ 1876 static void es1968_update_hw_volume(struct work_struct *work) 1877 { 1878 struct es1968 *chip = container_of(work, struct es1968, hwvol_work); 1879 int x, val; 1880 1881 /* Figure out which volume control button was pushed, 1882 based on differences from the default register 1883 values. */ 1884 x = inb(chip->io_port + 0x1c) & 0xee; 1885 /* Reset the volume control registers. */ 1886 outb(0x88, chip->io_port + 0x1c); 1887 outb(0x88, chip->io_port + 0x1d); 1888 outb(0x88, chip->io_port + 0x1e); 1889 outb(0x88, chip->io_port + 0x1f); 1890 1891 if (chip->in_suspend) 1892 return; 1893 1894 #ifndef CONFIG_SND_ES1968_INPUT 1895 if (! chip->master_switch || ! chip->master_volume) 1896 return; 1897 1898 val = snd_ac97_read(chip->ac97, AC97_MASTER); 1899 switch (x) { 1900 case 0x88: 1901 /* mute */ 1902 val ^= 0x8000; 1903 break; 1904 case 0xaa: 1905 /* volume up */ 1906 if ((val & 0x7f) > 0) 1907 val--; 1908 if ((val & 0x7f00) > 0) 1909 val -= 0x0100; 1910 break; 1911 case 0x66: 1912 /* volume down */ 1913 if ((val & 0x7f) < 0x1f) 1914 val++; 1915 if ((val & 0x7f00) < 0x1f00) 1916 val += 0x0100; 1917 break; 1918 } 1919 if (snd_ac97_update(chip->ac97, AC97_MASTER, val)) 1920 snd_ctl_notify(chip->card, SNDRV_CTL_EVENT_MASK_VALUE, 1921 &chip->master_volume->id); 1922 #else 1923 if (!chip->input_dev) 1924 return; 1925 1926 val = 0; 1927 switch (x) { 1928 case 0x88: 1929 /* The counters have not changed, yet we've received a HV 1930 interrupt. According to tests run by various people this 1931 happens when pressing the mute button. */ 1932 val = KEY_MUTE; 1933 break; 1934 case 0xaa: 1935 /* counters increased by 1 -> volume up */ 1936 val = KEY_VOLUMEUP; 1937 break; 1938 case 0x66: 1939 /* counters decreased by 1 -> volume down */ 1940 val = KEY_VOLUMEDOWN; 1941 break; 1942 } 1943 1944 if (val) { 1945 input_report_key(chip->input_dev, val, 1); 1946 input_sync(chip->input_dev); 1947 input_report_key(chip->input_dev, val, 0); 1948 input_sync(chip->input_dev); 1949 } 1950 #endif 1951 } 1952 1953 /* 1954 * interrupt handler 1955 */ 1956 static irqreturn_t snd_es1968_interrupt(int irq, void *dev_id) 1957 { 1958 struct es1968 *chip = dev_id; 1959 u32 event; 1960 1961 event = inb(chip->io_port + 0x1A); 1962 if (!event) 1963 return IRQ_NONE; 1964 1965 outw(inw(chip->io_port + 4) & 1, chip->io_port + 4); 1966 1967 if (event & ESM_HWVOL_IRQ) 1968 schedule_work(&chip->hwvol_work); 1969 1970 /* else ack 'em all, i imagine */ 1971 outb(0xFF, chip->io_port + 0x1A); 1972 1973 if ((event & ESM_MPU401_IRQ) && chip->rmidi) { 1974 snd_mpu401_uart_interrupt(irq, chip->rmidi->private_data); 1975 } 1976 1977 if (event & ESM_SOUND_IRQ) { 1978 struct esschan *es; 1979 spin_lock(&chip->substream_lock); 1980 list_for_each_entry(es, &chip->substream_list, list) { 1981 if (es->running) { 1982 snd_es1968_update_pcm(chip, es); 1983 if (es->fmt & ESS_FMT_STEREO) 1984 snd_es1968_suppress_jitter(chip, es); 1985 } 1986 } 1987 spin_unlock(&chip->substream_lock); 1988 if (chip->in_measurement) { 1989 unsigned int curp = __apu_get_register(chip, chip->measure_apu, 5); 1990 if (curp < chip->measure_lastpos) 1991 chip->measure_count++; 1992 chip->measure_lastpos = curp; 1993 } 1994 } 1995 1996 return IRQ_HANDLED; 1997 } 1998 1999 /* 2000 * Mixer stuff 2001 */ 2002 2003 static int 2004 snd_es1968_mixer(struct es1968 *chip) 2005 { 2006 struct snd_ac97_bus *pbus; 2007 struct snd_ac97_template ac97; 2008 int err; 2009 static const struct snd_ac97_bus_ops ops = { 2010 .write = snd_es1968_ac97_write, 2011 .read = snd_es1968_ac97_read, 2012 }; 2013 2014 err = snd_ac97_bus(chip->card, 0, &ops, NULL, &pbus); 2015 if (err < 0) 2016 return err; 2017 pbus->no_vra = 1; /* ES1968 doesn't need VRA */ 2018 2019 memset(&ac97, 0, sizeof(ac97)); 2020 ac97.private_data = chip; 2021 err = snd_ac97_mixer(pbus, &ac97, &chip->ac97); 2022 if (err < 0) 2023 return err; 2024 2025 #ifndef CONFIG_SND_ES1968_INPUT 2026 /* attach master switch / volumes for h/w volume control */ 2027 chip->master_switch = snd_ctl_find_id_mixer(chip->card, 2028 "Master Playback Switch"); 2029 chip->master_volume = snd_ctl_find_id_mixer(chip->card, 2030 "Master Playback Volume"); 2031 #endif 2032 2033 return 0; 2034 } 2035 2036 /* 2037 * reset ac97 codec 2038 */ 2039 2040 static void snd_es1968_ac97_reset(struct es1968 *chip) 2041 { 2042 unsigned long ioaddr = chip->io_port; 2043 2044 unsigned short save_ringbus_a; 2045 unsigned short save_68; 2046 unsigned short w; 2047 unsigned int vend; 2048 2049 /* save configuration */ 2050 save_ringbus_a = inw(ioaddr + 0x36); 2051 2052 //outw(inw(ioaddr + 0x38) & 0xfffc, ioaddr + 0x38); /* clear second codec id? */ 2053 /* set command/status address i/o to 1st codec */ 2054 outw(inw(ioaddr + 0x3a) & 0xfffc, ioaddr + 0x3a); 2055 outw(inw(ioaddr + 0x3c) & 0xfffc, ioaddr + 0x3c); 2056 2057 /* disable ac link */ 2058 outw(0x0000, ioaddr + 0x36); 2059 save_68 = inw(ioaddr + 0x68); 2060 pci_read_config_word(chip->pci, 0x58, &w); /* something magical with gpio and bus arb. */ 2061 pci_read_config_dword(chip->pci, PCI_SUBSYSTEM_VENDOR_ID, &vend); 2062 if (w & 1) 2063 save_68 |= 0x10; 2064 outw(0xfffe, ioaddr + 0x64); /* unmask gpio 0 */ 2065 outw(0x0001, ioaddr + 0x68); /* gpio write */ 2066 outw(0x0000, ioaddr + 0x60); /* write 0 to gpio 0 */ 2067 udelay(20); 2068 outw(0x0001, ioaddr + 0x60); /* write 1 to gpio 1 */ 2069 msleep(20); 2070 2071 outw(save_68 | 0x1, ioaddr + 0x68); /* now restore .. */ 2072 outw((inw(ioaddr + 0x38) & 0xfffc) | 0x1, ioaddr + 0x38); 2073 outw((inw(ioaddr + 0x3a) & 0xfffc) | 0x1, ioaddr + 0x3a); 2074 outw((inw(ioaddr + 0x3c) & 0xfffc) | 0x1, ioaddr + 0x3c); 2075 2076 /* now the second codec */ 2077 /* disable ac link */ 2078 outw(0x0000, ioaddr + 0x36); 2079 outw(0xfff7, ioaddr + 0x64); /* unmask gpio 3 */ 2080 save_68 = inw(ioaddr + 0x68); 2081 outw(0x0009, ioaddr + 0x68); /* gpio write 0 & 3 ?? */ 2082 outw(0x0001, ioaddr + 0x60); /* write 1 to gpio */ 2083 udelay(20); 2084 outw(0x0009, ioaddr + 0x60); /* write 9 to gpio */ 2085 msleep(500); 2086 //outw(inw(ioaddr + 0x38) & 0xfffc, ioaddr + 0x38); 2087 outw(inw(ioaddr + 0x3a) & 0xfffc, ioaddr + 0x3a); 2088 outw(inw(ioaddr + 0x3c) & 0xfffc, ioaddr + 0x3c); 2089 2090 #if 0 /* the loop here needs to be much better if we want it.. */ 2091 dev_info(chip->card->dev, "trying software reset\n"); 2092 /* try and do a software reset */ 2093 outb(0x80 | 0x7c, ioaddr + 0x30); 2094 for (w = 0;; w++) { 2095 if ((inw(ioaddr + 0x30) & 1) == 0) { 2096 if (inb(ioaddr + 0x32) != 0) 2097 break; 2098 2099 outb(0x80 | 0x7d, ioaddr + 0x30); 2100 if (((inw(ioaddr + 0x30) & 1) == 0) 2101 && (inb(ioaddr + 0x32) != 0)) 2102 break; 2103 outb(0x80 | 0x7f, ioaddr + 0x30); 2104 if (((inw(ioaddr + 0x30) & 1) == 0) 2105 && (inb(ioaddr + 0x32) != 0)) 2106 break; 2107 } 2108 2109 if (w > 10000) { 2110 outb(inb(ioaddr + 0x37) | 0x08, ioaddr + 0x37); /* do a software reset */ 2111 msleep(500); /* oh my.. */ 2112 outb(inb(ioaddr + 0x37) & ~0x08, 2113 ioaddr + 0x37); 2114 udelay(1); 2115 outw(0x80, ioaddr + 0x30); 2116 for (w = 0; w < 10000; w++) { 2117 if ((inw(ioaddr + 0x30) & 1) == 0) 2118 break; 2119 } 2120 } 2121 } 2122 #endif 2123 if (vend == NEC_VERSA_SUBID1 || vend == NEC_VERSA_SUBID2) { 2124 /* turn on external amp? */ 2125 outw(0xf9ff, ioaddr + 0x64); 2126 outw(inw(ioaddr + 0x68) | 0x600, ioaddr + 0x68); 2127 outw(0x0209, ioaddr + 0x60); 2128 } 2129 2130 /* restore.. */ 2131 outw(save_ringbus_a, ioaddr + 0x36); 2132 2133 /* Turn on the 978 docking chip. 2134 First frob the "master output enable" bit, 2135 then set most of the playback volume control registers to max. */ 2136 outb(inb(ioaddr+0xc0)|(1<<5), ioaddr+0xc0); 2137 outb(0xff, ioaddr+0xc3); 2138 outb(0xff, ioaddr+0xc4); 2139 outb(0xff, ioaddr+0xc6); 2140 outb(0xff, ioaddr+0xc8); 2141 outb(0x3f, ioaddr+0xcf); 2142 outb(0x3f, ioaddr+0xd0); 2143 } 2144 2145 static void snd_es1968_reset(struct es1968 *chip) 2146 { 2147 /* Reset */ 2148 outw(ESM_RESET_MAESTRO | ESM_RESET_DIRECTSOUND, 2149 chip->io_port + ESM_PORT_HOST_IRQ); 2150 udelay(10); 2151 outw(0x0000, chip->io_port + ESM_PORT_HOST_IRQ); 2152 udelay(10); 2153 } 2154 2155 /* 2156 * initialize maestro chip 2157 */ 2158 static void snd_es1968_chip_init(struct es1968 *chip) 2159 { 2160 struct pci_dev *pci = chip->pci; 2161 int i; 2162 unsigned long iobase = chip->io_port; 2163 u16 w; 2164 u32 n; 2165 2166 /* We used to muck around with pci config space that 2167 * we had no business messing with. We don't know enough 2168 * about the machine to know which DMA mode is appropriate, 2169 * etc. We were guessing wrong on some machines and making 2170 * them unhappy. We now trust in the BIOS to do things right, 2171 * which almost certainly means a new host of problems will 2172 * arise with broken BIOS implementations. screw 'em. 2173 * We're already intolerant of machines that don't assign 2174 * IRQs. 2175 */ 2176 2177 /* Config Reg A */ 2178 pci_read_config_word(pci, ESM_CONFIG_A, &w); 2179 2180 w &= ~DMA_CLEAR; /* Clear DMA bits */ 2181 w &= ~(PIC_SNOOP1 | PIC_SNOOP2); /* Clear Pic Snoop Mode Bits */ 2182 w &= ~SAFEGUARD; /* Safeguard off */ 2183 w |= POST_WRITE; /* Posted write */ 2184 w |= PCI_TIMING; /* PCI timing on */ 2185 /* XXX huh? claims to be reserved.. */ 2186 w &= ~SWAP_LR; /* swap left/right 2187 seems to only have effect on SB 2188 Emulation */ 2189 w &= ~SUBTR_DECODE; /* Subtractive decode off */ 2190 2191 pci_write_config_word(pci, ESM_CONFIG_A, w); 2192 2193 /* Config Reg B */ 2194 2195 pci_read_config_word(pci, ESM_CONFIG_B, &w); 2196 2197 w &= ~(1 << 15); /* Turn off internal clock multiplier */ 2198 /* XXX how do we know which to use? */ 2199 w &= ~(1 << 14); /* External clock */ 2200 2201 w &= ~SPDIF_CONFB; /* disable S/PDIF output */ 2202 w |= HWV_CONFB; /* HWV on */ 2203 w |= DEBOUNCE; /* Debounce off: easier to push the HW buttons */ 2204 w &= ~GPIO_CONFB; /* GPIO 4:5 */ 2205 w |= CHI_CONFB; /* Disconnect from the CHI. Enabling this made a dell 7500 work. */ 2206 w &= ~IDMA_CONFB; /* IDMA off (undocumented) */ 2207 w &= ~MIDI_FIX; /* MIDI fix off (undoc) */ 2208 w &= ~(1 << 1); /* reserved, always write 0 */ 2209 w &= ~IRQ_TO_ISA; /* IRQ to ISA off (undoc) */ 2210 2211 pci_write_config_word(pci, ESM_CONFIG_B, w); 2212 2213 /* DDMA off */ 2214 2215 pci_read_config_word(pci, ESM_DDMA, &w); 2216 w &= ~(1 << 0); 2217 pci_write_config_word(pci, ESM_DDMA, w); 2218 2219 /* 2220 * Legacy mode 2221 */ 2222 2223 pci_read_config_word(pci, ESM_LEGACY_AUDIO_CONTROL, &w); 2224 2225 w |= ESS_DISABLE_AUDIO; /* Disable Legacy Audio */ 2226 w &= ~ESS_ENABLE_SERIAL_IRQ; /* Disable SIRQ */ 2227 w &= ~(0x1f); /* disable mpu irq/io, game port, fm, SB */ 2228 2229 pci_write_config_word(pci, ESM_LEGACY_AUDIO_CONTROL, w); 2230 2231 /* Set up 978 docking control chip. */ 2232 pci_read_config_word(pci, 0x58, &w); 2233 w|=1<<2; /* Enable 978. */ 2234 w|=1<<3; /* Turn on 978 hardware volume control. */ 2235 w&=~(1<<11); /* Turn on 978 mixer volume control. */ 2236 pci_write_config_word(pci, 0x58, w); 2237 2238 /* Sound Reset */ 2239 2240 snd_es1968_reset(chip); 2241 2242 /* 2243 * Ring Bus Setup 2244 */ 2245 2246 /* setup usual 0x34 stuff.. 0x36 may be chip specific */ 2247 outw(0xC090, iobase + ESM_RING_BUS_DEST); /* direct sound, stereo */ 2248 udelay(20); 2249 outw(0x3000, iobase + ESM_RING_BUS_CONTR_A); /* enable ringbus/serial */ 2250 udelay(20); 2251 2252 /* 2253 * Reset the CODEC 2254 */ 2255 2256 snd_es1968_ac97_reset(chip); 2257 2258 /* Ring Bus Control B */ 2259 2260 n = inl(iobase + ESM_RING_BUS_CONTR_B); 2261 n &= ~RINGB_EN_SPDIF; /* SPDIF off */ 2262 //w |= RINGB_EN_2CODEC; /* enable 2nd codec */ 2263 outl(n, iobase + ESM_RING_BUS_CONTR_B); 2264 2265 /* Set hardware volume control registers to midpoints. 2266 We can tell which button was pushed based on how they change. */ 2267 outb(0x88, iobase+0x1c); 2268 outb(0x88, iobase+0x1d); 2269 outb(0x88, iobase+0x1e); 2270 outb(0x88, iobase+0x1f); 2271 2272 /* it appears some maestros (dell 7500) only work if these are set, 2273 regardless of whether we use the assp or not. */ 2274 2275 outb(0, iobase + ASSP_CONTROL_B); 2276 outb(3, iobase + ASSP_CONTROL_A); /* M: Reserved bits... */ 2277 outb(0, iobase + ASSP_CONTROL_C); /* M: Disable ASSP, ASSP IRQ's and FM Port */ 2278 2279 /* 2280 * set up wavecache 2281 */ 2282 for (i = 0; i < 16; i++) { 2283 /* Write 0 into the buffer area 0x1E0->1EF */ 2284 outw(0x01E0 + i, iobase + WC_INDEX); 2285 outw(0x0000, iobase + WC_DATA); 2286 2287 /* The 1.10 test program seem to write 0 into the buffer area 2288 * 0x1D0-0x1DF too.*/ 2289 outw(0x01D0 + i, iobase + WC_INDEX); 2290 outw(0x0000, iobase + WC_DATA); 2291 } 2292 wave_set_register(chip, IDR7_WAVE_ROMRAM, 2293 (wave_get_register(chip, IDR7_WAVE_ROMRAM) & 0xFF00)); 2294 wave_set_register(chip, IDR7_WAVE_ROMRAM, 2295 wave_get_register(chip, IDR7_WAVE_ROMRAM) | 0x100); 2296 wave_set_register(chip, IDR7_WAVE_ROMRAM, 2297 wave_get_register(chip, IDR7_WAVE_ROMRAM) & ~0x200); 2298 wave_set_register(chip, IDR7_WAVE_ROMRAM, 2299 wave_get_register(chip, IDR7_WAVE_ROMRAM) | ~0x400); 2300 2301 2302 maestro_write(chip, IDR2_CRAM_DATA, 0x0000); 2303 /* Now back to the DirectSound stuff */ 2304 /* audio serial configuration.. ? */ 2305 maestro_write(chip, 0x08, 0xB004); 2306 maestro_write(chip, 0x09, 0x001B); 2307 maestro_write(chip, 0x0A, 0x8000); 2308 maestro_write(chip, 0x0B, 0x3F37); 2309 maestro_write(chip, 0x0C, 0x0098); 2310 2311 /* parallel in, has something to do with recording :) */ 2312 maestro_write(chip, 0x0C, 2313 (maestro_read(chip, 0x0C) & ~0xF000) | 0x8000); 2314 /* parallel out */ 2315 maestro_write(chip, 0x0C, 2316 (maestro_read(chip, 0x0C) & ~0x0F00) | 0x0500); 2317 2318 maestro_write(chip, 0x0D, 0x7632); 2319 2320 /* Wave cache control on - test off, sg off, 2321 enable, enable extra chans 1Mb */ 2322 2323 w = inw(iobase + WC_CONTROL); 2324 2325 w &= ~0xFA00; /* Seems to be reserved? I don't know */ 2326 w |= 0xA000; /* reserved... I don't know */ 2327 w &= ~0x0200; /* Channels 56,57,58,59 as Extra Play,Rec Channel enable 2328 Seems to crash the Computer if enabled... */ 2329 w |= 0x0100; /* Wave Cache Operation Enabled */ 2330 w |= 0x0080; /* Channels 60/61 as Placback/Record enabled */ 2331 w &= ~0x0060; /* Clear Wavtable Size */ 2332 w |= 0x0020; /* Wavetable Size : 1MB */ 2333 /* Bit 4 is reserved */ 2334 w &= ~0x000C; /* DMA Stuff? I don't understand what the datasheet means */ 2335 /* Bit 1 is reserved */ 2336 w &= ~0x0001; /* Test Mode off */ 2337 2338 outw(w, iobase + WC_CONTROL); 2339 2340 /* Now clear the APU control ram */ 2341 for (i = 0; i < NR_APUS; i++) { 2342 for (w = 0; w < NR_APU_REGS; w++) 2343 apu_set_register(chip, i, w, 0); 2344 2345 } 2346 } 2347 2348 /* Enable IRQ's */ 2349 static void snd_es1968_start_irq(struct es1968 *chip) 2350 { 2351 unsigned short w; 2352 w = ESM_HIRQ_DSIE | ESM_HIRQ_HW_VOLUME; 2353 if (chip->rmidi) 2354 w |= ESM_HIRQ_MPU401; 2355 outb(w, chip->io_port + 0x1A); 2356 outw(w, chip->io_port + ESM_PORT_HOST_IRQ); 2357 } 2358 2359 #ifdef CONFIG_PM_SLEEP 2360 /* 2361 * PM support 2362 */ 2363 static int es1968_suspend(struct device *dev) 2364 { 2365 struct snd_card *card = dev_get_drvdata(dev); 2366 struct es1968 *chip = card->private_data; 2367 2368 if (! chip->do_pm) 2369 return 0; 2370 2371 chip->in_suspend = 1; 2372 cancel_work_sync(&chip->hwvol_work); 2373 snd_power_change_state(card, SNDRV_CTL_POWER_D3hot); 2374 snd_ac97_suspend(chip->ac97); 2375 snd_es1968_bob_stop(chip); 2376 return 0; 2377 } 2378 2379 static int es1968_resume(struct device *dev) 2380 { 2381 struct snd_card *card = dev_get_drvdata(dev); 2382 struct es1968 *chip = card->private_data; 2383 struct esschan *es; 2384 2385 if (! chip->do_pm) 2386 return 0; 2387 2388 snd_es1968_chip_init(chip); 2389 2390 /* need to restore the base pointers.. */ 2391 if (chip->dma.addr) { 2392 /* set PCMBAR */ 2393 wave_set_register(chip, 0x01FC, chip->dma.addr >> 12); 2394 } 2395 2396 snd_es1968_start_irq(chip); 2397 2398 /* restore ac97 state */ 2399 snd_ac97_resume(chip->ac97); 2400 2401 list_for_each_entry(es, &chip->substream_list, list) { 2402 switch (es->mode) { 2403 case ESM_MODE_PLAY: 2404 snd_es1968_playback_setup(chip, es, es->substream->runtime); 2405 break; 2406 case ESM_MODE_CAPTURE: 2407 snd_es1968_capture_setup(chip, es, es->substream->runtime); 2408 break; 2409 } 2410 } 2411 2412 /* start timer again */ 2413 if (chip->bobclient) 2414 snd_es1968_bob_start(chip); 2415 2416 snd_power_change_state(card, SNDRV_CTL_POWER_D0); 2417 chip->in_suspend = 0; 2418 return 0; 2419 } 2420 2421 static SIMPLE_DEV_PM_OPS(es1968_pm, es1968_suspend, es1968_resume); 2422 #define ES1968_PM_OPS &es1968_pm 2423 #else 2424 #define ES1968_PM_OPS NULL 2425 #endif /* CONFIG_PM_SLEEP */ 2426 2427 #ifdef SUPPORT_JOYSTICK 2428 #define JOYSTICK_ADDR 0x200 2429 static int snd_es1968_create_gameport(struct es1968 *chip, int dev) 2430 { 2431 struct gameport *gp; 2432 struct resource *r; 2433 u16 val; 2434 2435 if (!joystick[dev]) 2436 return -ENODEV; 2437 2438 r = devm_request_region(&chip->pci->dev, JOYSTICK_ADDR, 8, 2439 "ES1968 gameport"); 2440 if (!r) 2441 return -EBUSY; 2442 2443 chip->gameport = gp = gameport_allocate_port(); 2444 if (!gp) { 2445 dev_err(chip->card->dev, 2446 "cannot allocate memory for gameport\n"); 2447 return -ENOMEM; 2448 } 2449 2450 pci_read_config_word(chip->pci, ESM_LEGACY_AUDIO_CONTROL, &val); 2451 pci_write_config_word(chip->pci, ESM_LEGACY_AUDIO_CONTROL, val | 0x04); 2452 2453 gameport_set_name(gp, "ES1968 Gameport"); 2454 gameport_set_phys(gp, "pci%s/gameport0", pci_name(chip->pci)); 2455 gameport_set_dev_parent(gp, &chip->pci->dev); 2456 gp->io = JOYSTICK_ADDR; 2457 2458 gameport_register_port(gp); 2459 2460 return 0; 2461 } 2462 2463 static void snd_es1968_free_gameport(struct es1968 *chip) 2464 { 2465 if (chip->gameport) { 2466 gameport_unregister_port(chip->gameport); 2467 chip->gameport = NULL; 2468 } 2469 } 2470 #else 2471 static inline int snd_es1968_create_gameport(struct es1968 *chip, int dev) { return -ENOSYS; } 2472 static inline void snd_es1968_free_gameport(struct es1968 *chip) { } 2473 #endif 2474 2475 #ifdef CONFIG_SND_ES1968_INPUT 2476 static int snd_es1968_input_register(struct es1968 *chip) 2477 { 2478 struct input_dev *input_dev; 2479 int err; 2480 2481 input_dev = devm_input_allocate_device(&chip->pci->dev); 2482 if (!input_dev) 2483 return -ENOMEM; 2484 2485 snprintf(chip->phys, sizeof(chip->phys), "pci-%s/input0", 2486 pci_name(chip->pci)); 2487 2488 input_dev->name = chip->card->driver; 2489 input_dev->phys = chip->phys; 2490 input_dev->id.bustype = BUS_PCI; 2491 input_dev->id.vendor = chip->pci->vendor; 2492 input_dev->id.product = chip->pci->device; 2493 input_dev->dev.parent = &chip->pci->dev; 2494 2495 __set_bit(EV_KEY, input_dev->evbit); 2496 __set_bit(KEY_MUTE, input_dev->keybit); 2497 __set_bit(KEY_VOLUMEDOWN, input_dev->keybit); 2498 __set_bit(KEY_VOLUMEUP, input_dev->keybit); 2499 2500 err = input_register_device(input_dev); 2501 if (err) 2502 return err; 2503 2504 chip->input_dev = input_dev; 2505 return 0; 2506 } 2507 #endif /* CONFIG_SND_ES1968_INPUT */ 2508 2509 #ifdef CONFIG_SND_ES1968_RADIO 2510 #define GPIO_DATA 0x60 2511 #define IO_MASK 4 /* mask register offset from GPIO_DATA 2512 bits 1=unmask write to given bit */ 2513 #define IO_DIR 8 /* direction register offset from GPIO_DATA 2514 bits 0/1=read/write direction */ 2515 2516 /* GPIO to TEA575x maps */ 2517 struct snd_es1968_tea575x_gpio { 2518 u8 data, clk, wren, most; 2519 char *name; 2520 }; 2521 2522 static const struct snd_es1968_tea575x_gpio snd_es1968_tea575x_gpios[] = { 2523 { .data = 6, .clk = 7, .wren = 8, .most = 9, .name = "SF64-PCE2" }, 2524 { .data = 7, .clk = 8, .wren = 6, .most = 10, .name = "M56VAP" }, 2525 }; 2526 2527 #define get_tea575x_gpio(chip) \ 2528 (&snd_es1968_tea575x_gpios[(chip)->tea575x_tuner]) 2529 2530 2531 static void snd_es1968_tea575x_set_pins(struct snd_tea575x *tea, u8 pins) 2532 { 2533 struct es1968 *chip = tea->private_data; 2534 struct snd_es1968_tea575x_gpio gpio = *get_tea575x_gpio(chip); 2535 u16 val = 0; 2536 2537 val |= (pins & TEA575X_DATA) ? (1 << gpio.data) : 0; 2538 val |= (pins & TEA575X_CLK) ? (1 << gpio.clk) : 0; 2539 val |= (pins & TEA575X_WREN) ? (1 << gpio.wren) : 0; 2540 2541 outw(val, chip->io_port + GPIO_DATA); 2542 } 2543 2544 static u8 snd_es1968_tea575x_get_pins(struct snd_tea575x *tea) 2545 { 2546 struct es1968 *chip = tea->private_data; 2547 struct snd_es1968_tea575x_gpio gpio = *get_tea575x_gpio(chip); 2548 u16 val = inw(chip->io_port + GPIO_DATA); 2549 u8 ret = 0; 2550 2551 if (val & (1 << gpio.data)) 2552 ret |= TEA575X_DATA; 2553 if (val & (1 << gpio.most)) 2554 ret |= TEA575X_MOST; 2555 2556 return ret; 2557 } 2558 2559 static void snd_es1968_tea575x_set_direction(struct snd_tea575x *tea, bool output) 2560 { 2561 struct es1968 *chip = tea->private_data; 2562 unsigned long io = chip->io_port + GPIO_DATA; 2563 u16 odir = inw(io + IO_DIR); 2564 struct snd_es1968_tea575x_gpio gpio = *get_tea575x_gpio(chip); 2565 2566 if (output) { 2567 outw(~((1 << gpio.data) | (1 << gpio.clk) | (1 << gpio.wren)), 2568 io + IO_MASK); 2569 outw(odir | (1 << gpio.data) | (1 << gpio.clk) | (1 << gpio.wren), 2570 io + IO_DIR); 2571 } else { 2572 outw(~((1 << gpio.clk) | (1 << gpio.wren) | (1 << gpio.data) | (1 << gpio.most)), 2573 io + IO_MASK); 2574 outw((odir & ~((1 << gpio.data) | (1 << gpio.most))) 2575 | (1 << gpio.clk) | (1 << gpio.wren), io + IO_DIR); 2576 } 2577 } 2578 2579 static const struct snd_tea575x_ops snd_es1968_tea_ops = { 2580 .set_pins = snd_es1968_tea575x_set_pins, 2581 .get_pins = snd_es1968_tea575x_get_pins, 2582 .set_direction = snd_es1968_tea575x_set_direction, 2583 }; 2584 #endif 2585 2586 static void snd_es1968_free(struct snd_card *card) 2587 { 2588 struct es1968 *chip = card->private_data; 2589 2590 cancel_work_sync(&chip->hwvol_work); 2591 2592 if (chip->io_port) { 2593 outw(1, chip->io_port + 0x04); /* clear WP interrupts */ 2594 outw(0, chip->io_port + ESM_PORT_HOST_IRQ); /* disable IRQ */ 2595 } 2596 2597 #ifdef CONFIG_SND_ES1968_RADIO 2598 snd_tea575x_exit(&chip->tea); 2599 v4l2_device_unregister(&chip->v4l2_dev); 2600 #endif 2601 2602 snd_es1968_free_gameport(chip); 2603 } 2604 2605 struct ess_device_list { 2606 unsigned short type; /* chip type */ 2607 unsigned short vendor; /* subsystem vendor id */ 2608 }; 2609 2610 static const struct ess_device_list pm_allowlist[] = { 2611 { TYPE_MAESTRO2E, 0x0e11 }, /* Compaq Armada */ 2612 { TYPE_MAESTRO2E, 0x1028 }, 2613 { TYPE_MAESTRO2E, 0x103c }, 2614 { TYPE_MAESTRO2E, 0x1179 }, 2615 { TYPE_MAESTRO2E, 0x14c0 }, /* HP omnibook 4150 */ 2616 { TYPE_MAESTRO2E, 0x1558 }, 2617 { TYPE_MAESTRO2E, 0x125d }, /* a PCI card, e.g. Terratec DMX */ 2618 { TYPE_MAESTRO2, 0x125d }, /* a PCI card, e.g. SF64-PCE2 */ 2619 }; 2620 2621 static const struct ess_device_list mpu_denylist[] = { 2622 { TYPE_MAESTRO2, 0x125d }, 2623 }; 2624 2625 static int snd_es1968_create(struct snd_card *card, 2626 struct pci_dev *pci, 2627 int total_bufsize, 2628 int play_streams, 2629 int capt_streams, 2630 int chip_type, 2631 int do_pm, 2632 int radio_nr) 2633 { 2634 struct es1968 *chip = card->private_data; 2635 int i, err; 2636 2637 /* enable PCI device */ 2638 err = pcim_enable_device(pci); 2639 if (err < 0) 2640 return err; 2641 /* check, if we can restrict PCI DMA transfers to 28 bits */ 2642 if (dma_set_mask_and_coherent(&pci->dev, DMA_BIT_MASK(28))) { 2643 dev_err(card->dev, 2644 "architecture does not support 28bit PCI busmaster DMA\n"); 2645 return -ENXIO; 2646 } 2647 2648 /* Set Vars */ 2649 chip->type = chip_type; 2650 spin_lock_init(&chip->reg_lock); 2651 spin_lock_init(&chip->substream_lock); 2652 INIT_LIST_HEAD(&chip->buf_list); 2653 INIT_LIST_HEAD(&chip->substream_list); 2654 mutex_init(&chip->memory_mutex); 2655 INIT_WORK(&chip->hwvol_work, es1968_update_hw_volume); 2656 chip->card = card; 2657 chip->pci = pci; 2658 chip->irq = -1; 2659 chip->total_bufsize = total_bufsize; /* in bytes */ 2660 chip->playback_streams = play_streams; 2661 chip->capture_streams = capt_streams; 2662 2663 err = pci_request_regions(pci, "ESS Maestro"); 2664 if (err < 0) 2665 return err; 2666 chip->io_port = pci_resource_start(pci, 0); 2667 if (devm_request_irq(&pci->dev, pci->irq, snd_es1968_interrupt, 2668 IRQF_SHARED, KBUILD_MODNAME, chip)) { 2669 dev_err(card->dev, "unable to grab IRQ %d\n", pci->irq); 2670 return -EBUSY; 2671 } 2672 chip->irq = pci->irq; 2673 card->sync_irq = chip->irq; 2674 card->private_free = snd_es1968_free; 2675 2676 /* Clear Maestro_map */ 2677 for (i = 0; i < 32; i++) 2678 chip->maestro_map[i] = 0; 2679 2680 /* Clear Apu Map */ 2681 for (i = 0; i < NR_APUS; i++) 2682 chip->apu[i] = ESM_APU_FREE; 2683 2684 /* just to be sure */ 2685 pci_set_master(pci); 2686 2687 if (do_pm > 1) { 2688 /* disable power-management if not on the allowlist */ 2689 unsigned short vend; 2690 pci_read_config_word(chip->pci, PCI_SUBSYSTEM_VENDOR_ID, &vend); 2691 for (i = 0; i < (int)ARRAY_SIZE(pm_allowlist); i++) { 2692 if (chip->type == pm_allowlist[i].type && 2693 vend == pm_allowlist[i].vendor) { 2694 do_pm = 1; 2695 break; 2696 } 2697 } 2698 if (do_pm > 1) { 2699 /* not matched; disabling pm */ 2700 dev_info(card->dev, "not attempting power management.\n"); 2701 do_pm = 0; 2702 } 2703 } 2704 chip->do_pm = do_pm; 2705 2706 snd_es1968_chip_init(chip); 2707 2708 #ifdef CONFIG_SND_ES1968_RADIO 2709 /* don't play with GPIOs on laptops */ 2710 if (chip->pci->subsystem_vendor != 0x125d) 2711 return 0; 2712 err = v4l2_device_register(&pci->dev, &chip->v4l2_dev); 2713 if (err < 0) 2714 return err; 2715 chip->tea.v4l2_dev = &chip->v4l2_dev; 2716 chip->tea.private_data = chip; 2717 chip->tea.radio_nr = radio_nr; 2718 chip->tea.ops = &snd_es1968_tea_ops; 2719 sprintf(chip->tea.bus_info, "PCI:%s", pci_name(pci)); 2720 for (i = 0; i < ARRAY_SIZE(snd_es1968_tea575x_gpios); i++) { 2721 chip->tea575x_tuner = i; 2722 if (!snd_tea575x_init(&chip->tea, THIS_MODULE)) { 2723 dev_info(card->dev, "detected TEA575x radio type %s\n", 2724 get_tea575x_gpio(chip)->name); 2725 strscpy(chip->tea.card, get_tea575x_gpio(chip)->name, 2726 sizeof(chip->tea.card)); 2727 break; 2728 } 2729 } 2730 #endif 2731 return 0; 2732 } 2733 2734 2735 /* 2736 */ 2737 static int __snd_es1968_probe(struct pci_dev *pci, 2738 const struct pci_device_id *pci_id) 2739 { 2740 static int dev; 2741 struct snd_card *card; 2742 struct es1968 *chip; 2743 unsigned int i; 2744 int err; 2745 2746 if (dev >= SNDRV_CARDS) 2747 return -ENODEV; 2748 if (!enable[dev]) { 2749 dev++; 2750 return -ENOENT; 2751 } 2752 2753 err = snd_devm_card_new(&pci->dev, index[dev], id[dev], THIS_MODULE, 2754 sizeof(*chip), &card); 2755 if (err < 0) 2756 return err; 2757 chip = card->private_data; 2758 2759 if (total_bufsize[dev] < 128) 2760 total_bufsize[dev] = 128; 2761 if (total_bufsize[dev] > 4096) 2762 total_bufsize[dev] = 4096; 2763 err = snd_es1968_create(card, pci, 2764 total_bufsize[dev] * 1024, /* in bytes */ 2765 pcm_substreams_p[dev], 2766 pcm_substreams_c[dev], 2767 pci_id->driver_data, 2768 use_pm[dev], 2769 radio_nr[dev]); 2770 if (err < 0) 2771 return err; 2772 2773 switch (chip->type) { 2774 case TYPE_MAESTRO2E: 2775 strcpy(card->driver, "ES1978"); 2776 strcpy(card->shortname, "ESS ES1978 (Maestro 2E)"); 2777 break; 2778 case TYPE_MAESTRO2: 2779 strcpy(card->driver, "ES1968"); 2780 strcpy(card->shortname, "ESS ES1968 (Maestro 2)"); 2781 break; 2782 case TYPE_MAESTRO: 2783 strcpy(card->driver, "ESM1"); 2784 strcpy(card->shortname, "ESS Maestro 1"); 2785 break; 2786 } 2787 2788 err = snd_es1968_pcm(chip, 0); 2789 if (err < 0) 2790 return err; 2791 2792 err = snd_es1968_mixer(chip); 2793 if (err < 0) 2794 return err; 2795 2796 if (enable_mpu[dev] == 2) { 2797 /* check the deny list */ 2798 unsigned short vend; 2799 pci_read_config_word(chip->pci, PCI_SUBSYSTEM_VENDOR_ID, &vend); 2800 for (i = 0; i < ARRAY_SIZE(mpu_denylist); i++) { 2801 if (chip->type == mpu_denylist[i].type && 2802 vend == mpu_denylist[i].vendor) { 2803 enable_mpu[dev] = 0; 2804 break; 2805 } 2806 } 2807 } 2808 if (enable_mpu[dev]) { 2809 err = snd_mpu401_uart_new(card, 0, MPU401_HW_MPU401, 2810 chip->io_port + ESM_MPU401_PORT, 2811 MPU401_INFO_INTEGRATED | 2812 MPU401_INFO_IRQ_HOOK, 2813 -1, &chip->rmidi); 2814 if (err < 0) 2815 dev_warn(card->dev, "skipping MPU-401 MIDI support..\n"); 2816 } 2817 2818 snd_es1968_create_gameport(chip, dev); 2819 2820 #ifdef CONFIG_SND_ES1968_INPUT 2821 err = snd_es1968_input_register(chip); 2822 if (err) 2823 dev_warn(card->dev, 2824 "Input device registration failed with error %i", err); 2825 #endif 2826 2827 snd_es1968_start_irq(chip); 2828 2829 chip->clock = clock[dev]; 2830 if (! chip->clock) 2831 es1968_measure_clock(chip); 2832 2833 sprintf(card->longname, "%s at 0x%lx, irq %i", 2834 card->shortname, chip->io_port, chip->irq); 2835 2836 err = snd_card_register(card); 2837 if (err < 0) 2838 return err; 2839 pci_set_drvdata(pci, card); 2840 dev++; 2841 return 0; 2842 } 2843 2844 static int snd_es1968_probe(struct pci_dev *pci, 2845 const struct pci_device_id *pci_id) 2846 { 2847 return snd_card_free_on_error(&pci->dev, __snd_es1968_probe(pci, pci_id)); 2848 } 2849 2850 static struct pci_driver es1968_driver = { 2851 .name = KBUILD_MODNAME, 2852 .id_table = snd_es1968_ids, 2853 .probe = snd_es1968_probe, 2854 .driver = { 2855 .pm = ES1968_PM_OPS, 2856 }, 2857 }; 2858 2859 module_pci_driver(es1968_driver); 2860