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Linux/sound/pci/es1938.c

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  1 // SPDX-License-Identifier: GPL-2.0-or-later
  2 /*
  3  *  Driver for ESS Solo-1 (ES1938, ES1946, ES1969) soundcard
  4  *  Copyright (c) by Jaromir Koutek <miri@punknet.cz>,
  5  *                   Jaroslav Kysela <perex@perex.cz>,
  6  *                   Thomas Sailer <sailer@ife.ee.ethz.ch>,
  7  *                   Abramo Bagnara <abramo@alsa-project.org>,
  8  *                   Markus Gruber <gruber@eikon.tum.de>
  9  * 
 10  * Rewritten from sonicvibes.c source.
 11  *
 12  *  TODO:
 13  *    Rewrite better spinlocks
 14  */
 15 
 16 /*
 17   NOTES:
 18   - Capture data is written unaligned starting from dma_base + 1 so I need to
 19     disable mmap and to add a copy callback.
 20   - After several cycle of the following:
 21     while : ; do arecord -d1 -f cd -t raw | aplay -f cd ; done
 22     a "playback write error (DMA or IRQ trouble?)" may happen.
 23     This is due to playback interrupts not generated.
 24     I suspect a timing issue.
 25   - Sometimes the interrupt handler is invoked wrongly during playback.
 26     This generates some harmless "Unexpected hw_pointer: wrong interrupt
 27     acknowledge".
 28     I've seen that using small period sizes.
 29     Reproducible with:
 30     mpg123 test.mp3 &
 31     hdparm -t -T /dev/hda
 32 */
 33 
 34 
 35 #include <linux/init.h>
 36 #include <linux/interrupt.h>
 37 #include <linux/pci.h>
 38 #include <linux/slab.h>
 39 #include <linux/gameport.h>
 40 #include <linux/module.h>
 41 #include <linux/delay.h>
 42 #include <linux/dma-mapping.h>
 43 #include <linux/io.h>
 44 #include <sound/core.h>
 45 #include <sound/control.h>
 46 #include <sound/pcm.h>
 47 #include <sound/opl3.h>
 48 #include <sound/mpu401.h>
 49 #include <sound/initval.h>
 50 #include <sound/tlv.h>
 51 
 52 MODULE_AUTHOR("Jaromir Koutek <miri@punknet.cz>");
 53 MODULE_DESCRIPTION("ESS Solo-1");
 54 MODULE_LICENSE("GPL");
 55 MODULE_SUPPORTED_DEVICE("{{ESS,ES1938},"
 56                 "{ESS,ES1946},"
 57                 "{ESS,ES1969},"
 58                 "{TerraTec,128i PCI}}");
 59 
 60 #if IS_REACHABLE(CONFIG_GAMEPORT)
 61 #define SUPPORT_JOYSTICK 1
 62 #endif
 63 
 64 static int index[SNDRV_CARDS] = SNDRV_DEFAULT_IDX;      /* Index 0-MAX */
 65 static char *id[SNDRV_CARDS] = SNDRV_DEFAULT_STR;       /* ID for this card */
 66 static bool enable[SNDRV_CARDS] = SNDRV_DEFAULT_ENABLE_PNP;     /* Enable this card */
 67 
 68 module_param_array(index, int, NULL, 0444);
 69 MODULE_PARM_DESC(index, "Index value for ESS Solo-1 soundcard.");
 70 module_param_array(id, charp, NULL, 0444);
 71 MODULE_PARM_DESC(id, "ID string for ESS Solo-1 soundcard.");
 72 module_param_array(enable, bool, NULL, 0444);
 73 MODULE_PARM_DESC(enable, "Enable ESS Solo-1 soundcard.");
 74 
 75 #define SLIO_REG(chip, x) ((chip)->io_port + ESSIO_REG_##x)
 76 
 77 #define SLDM_REG(chip, x) ((chip)->ddma_port + ESSDM_REG_##x)
 78 
 79 #define SLSB_REG(chip, x) ((chip)->sb_port + ESSSB_REG_##x)
 80 
 81 #define SL_PCI_LEGACYCONTROL            0x40
 82 #define SL_PCI_CONFIG                   0x50
 83 #define SL_PCI_DDMACONTROL              0x60
 84 
 85 #define ESSIO_REG_AUDIO2DMAADDR         0
 86 #define ESSIO_REG_AUDIO2DMACOUNT        4
 87 #define ESSIO_REG_AUDIO2MODE            6
 88 #define ESSIO_REG_IRQCONTROL            7
 89 
 90 #define ESSDM_REG_DMAADDR               0x00
 91 #define ESSDM_REG_DMACOUNT              0x04
 92 #define ESSDM_REG_DMACOMMAND            0x08
 93 #define ESSDM_REG_DMASTATUS             0x08
 94 #define ESSDM_REG_DMAMODE               0x0b
 95 #define ESSDM_REG_DMACLEAR              0x0d
 96 #define ESSDM_REG_DMAMASK               0x0f
 97 
 98 #define ESSSB_REG_FMLOWADDR             0x00
 99 #define ESSSB_REG_FMHIGHADDR            0x02
100 #define ESSSB_REG_MIXERADDR             0x04
101 #define ESSSB_REG_MIXERDATA             0x05
102 
103 #define ESSSB_IREG_AUDIO1               0x14
104 #define ESSSB_IREG_MICMIX               0x1a
105 #define ESSSB_IREG_RECSRC               0x1c
106 #define ESSSB_IREG_MASTER               0x32
107 #define ESSSB_IREG_FM                   0x36
108 #define ESSSB_IREG_AUXACD               0x38
109 #define ESSSB_IREG_AUXB                 0x3a
110 #define ESSSB_IREG_PCSPEAKER            0x3c
111 #define ESSSB_IREG_LINE                 0x3e
112 #define ESSSB_IREG_SPATCONTROL          0x50
113 #define ESSSB_IREG_SPATLEVEL            0x52
114 #define ESSSB_IREG_MASTER_LEFT          0x60
115 #define ESSSB_IREG_MASTER_RIGHT         0x62
116 #define ESSSB_IREG_MPU401CONTROL        0x64
117 #define ESSSB_IREG_MICMIXRECORD         0x68
118 #define ESSSB_IREG_AUDIO2RECORD         0x69
119 #define ESSSB_IREG_AUXACDRECORD         0x6a
120 #define ESSSB_IREG_FMRECORD             0x6b
121 #define ESSSB_IREG_AUXBRECORD           0x6c
122 #define ESSSB_IREG_MONO                 0x6d
123 #define ESSSB_IREG_LINERECORD           0x6e
124 #define ESSSB_IREG_MONORECORD           0x6f
125 #define ESSSB_IREG_AUDIO2SAMPLE         0x70
126 #define ESSSB_IREG_AUDIO2MODE           0x71
127 #define ESSSB_IREG_AUDIO2FILTER         0x72
128 #define ESSSB_IREG_AUDIO2TCOUNTL        0x74
129 #define ESSSB_IREG_AUDIO2TCOUNTH        0x76
130 #define ESSSB_IREG_AUDIO2CONTROL1       0x78
131 #define ESSSB_IREG_AUDIO2CONTROL2       0x7a
132 #define ESSSB_IREG_AUDIO2               0x7c
133 
134 #define ESSSB_REG_RESET                 0x06
135 
136 #define ESSSB_REG_READDATA              0x0a
137 #define ESSSB_REG_WRITEDATA             0x0c
138 #define ESSSB_REG_READSTATUS            0x0c
139 
140 #define ESSSB_REG_STATUS                0x0e
141 
142 #define ESS_CMD_EXTSAMPLERATE           0xa1
143 #define ESS_CMD_FILTERDIV               0xa2
144 #define ESS_CMD_DMACNTRELOADL           0xa4
145 #define ESS_CMD_DMACNTRELOADH           0xa5
146 #define ESS_CMD_ANALOGCONTROL           0xa8
147 #define ESS_CMD_IRQCONTROL              0xb1
148 #define ESS_CMD_DRQCONTROL              0xb2
149 #define ESS_CMD_RECLEVEL                0xb4
150 #define ESS_CMD_SETFORMAT               0xb6
151 #define ESS_CMD_SETFORMAT2              0xb7
152 #define ESS_CMD_DMACONTROL              0xb8
153 #define ESS_CMD_DMATYPE                 0xb9
154 #define ESS_CMD_OFFSETLEFT              0xba    
155 #define ESS_CMD_OFFSETRIGHT             0xbb
156 #define ESS_CMD_READREG                 0xc0
157 #define ESS_CMD_ENABLEEXT               0xc6
158 #define ESS_CMD_PAUSEDMA                0xd0
159 #define ESS_CMD_ENABLEAUDIO1            0xd1
160 #define ESS_CMD_STOPAUDIO1              0xd3
161 #define ESS_CMD_AUDIO1STATUS            0xd8
162 #define ESS_CMD_CONTDMA                 0xd4
163 #define ESS_CMD_TESTIRQ                 0xf2
164 
165 #define ESS_RECSRC_MIC          0
166 #define ESS_RECSRC_AUXACD       2
167 #define ESS_RECSRC_AUXB         5
168 #define ESS_RECSRC_LINE         6
169 #define ESS_RECSRC_NONE         7
170 
171 #define DAC1 0x01
172 #define ADC1 0x02
173 #define DAC2 0x04
174 
175 /*
176 
177  */
178 
179 #define SAVED_REG_SIZE  32 /* max. number of registers to save */
180 
181 struct es1938 {
182         int irq;
183 
184         unsigned long io_port;
185         unsigned long sb_port;
186         unsigned long vc_port;
187         unsigned long mpu_port;
188         unsigned long game_port;
189         unsigned long ddma_port;
190 
191         unsigned char irqmask;
192         unsigned char revision;
193 
194         struct snd_kcontrol *hw_volume;
195         struct snd_kcontrol *hw_switch;
196         struct snd_kcontrol *master_volume;
197         struct snd_kcontrol *master_switch;
198 
199         struct pci_dev *pci;
200         struct snd_card *card;
201         struct snd_pcm *pcm;
202         struct snd_pcm_substream *capture_substream;
203         struct snd_pcm_substream *playback1_substream;
204         struct snd_pcm_substream *playback2_substream;
205         struct snd_rawmidi *rmidi;
206 
207         unsigned int dma1_size;
208         unsigned int dma2_size;
209         unsigned int dma1_start;
210         unsigned int dma2_start;
211         unsigned int dma1_shift;
212         unsigned int dma2_shift;
213         unsigned int last_capture_dmaaddr;
214         unsigned int active;
215 
216         spinlock_t reg_lock;
217         spinlock_t mixer_lock;
218         struct snd_info_entry *proc_entry;
219 
220 #ifdef SUPPORT_JOYSTICK
221         struct gameport *gameport;
222 #endif
223 #ifdef CONFIG_PM_SLEEP
224         unsigned char saved_regs[SAVED_REG_SIZE];
225 #endif
226 };
227 
228 static irqreturn_t snd_es1938_interrupt(int irq, void *dev_id);
229 
230 static const struct pci_device_id snd_es1938_ids[] = {
231         { PCI_VDEVICE(ESS, 0x1969), 0, },   /* Solo-1 */
232         { 0, }
233 };
234 
235 MODULE_DEVICE_TABLE(pci, snd_es1938_ids);
236 
237 #define RESET_LOOP_TIMEOUT      0x10000
238 #define WRITE_LOOP_TIMEOUT      0x10000
239 #define GET_LOOP_TIMEOUT        0x01000
240 
241 /* -----------------------------------------------------------------
242  * Write to a mixer register
243  * -----------------------------------------------------------------*/
244 static void snd_es1938_mixer_write(struct es1938 *chip, unsigned char reg, unsigned char val)
245 {
246         unsigned long flags;
247         spin_lock_irqsave(&chip->mixer_lock, flags);
248         outb(reg, SLSB_REG(chip, MIXERADDR));
249         outb(val, SLSB_REG(chip, MIXERDATA));
250         spin_unlock_irqrestore(&chip->mixer_lock, flags);
251         dev_dbg(chip->card->dev, "Mixer reg %02x set to %02x\n", reg, val);
252 }
253 
254 /* -----------------------------------------------------------------
255  * Read from a mixer register
256  * -----------------------------------------------------------------*/
257 static int snd_es1938_mixer_read(struct es1938 *chip, unsigned char reg)
258 {
259         int data;
260         unsigned long flags;
261         spin_lock_irqsave(&chip->mixer_lock, flags);
262         outb(reg, SLSB_REG(chip, MIXERADDR));
263         data = inb(SLSB_REG(chip, MIXERDATA));
264         spin_unlock_irqrestore(&chip->mixer_lock, flags);
265         dev_dbg(chip->card->dev, "Mixer reg %02x now is %02x\n", reg, data);
266         return data;
267 }
268 
269 /* -----------------------------------------------------------------
270  * Write to some bits of a mixer register (return old value)
271  * -----------------------------------------------------------------*/
272 static int snd_es1938_mixer_bits(struct es1938 *chip, unsigned char reg,
273                                  unsigned char mask, unsigned char val)
274 {
275         unsigned long flags;
276         unsigned char old, new, oval;
277         spin_lock_irqsave(&chip->mixer_lock, flags);
278         outb(reg, SLSB_REG(chip, MIXERADDR));
279         old = inb(SLSB_REG(chip, MIXERDATA));
280         oval = old & mask;
281         if (val != oval) {
282                 new = (old & ~mask) | (val & mask);
283                 outb(new, SLSB_REG(chip, MIXERDATA));
284                 dev_dbg(chip->card->dev,
285                         "Mixer reg %02x was %02x, set to %02x\n",
286                            reg, old, new);
287         }
288         spin_unlock_irqrestore(&chip->mixer_lock, flags);
289         return oval;
290 }
291 
292 /* -----------------------------------------------------------------
293  * Write command to Controller Registers
294  * -----------------------------------------------------------------*/
295 static void snd_es1938_write_cmd(struct es1938 *chip, unsigned char cmd)
296 {
297         int i;
298         unsigned char v;
299         for (i = 0; i < WRITE_LOOP_TIMEOUT; i++) {
300                 if (!(v = inb(SLSB_REG(chip, READSTATUS)) & 0x80)) {
301                         outb(cmd, SLSB_REG(chip, WRITEDATA));
302                         return;
303                 }
304         }
305         dev_err(chip->card->dev,
306                 "snd_es1938_write_cmd timeout (0x02%x/0x02%x)\n", cmd, v);
307 }
308 
309 /* -----------------------------------------------------------------
310  * Read the Read Data Buffer
311  * -----------------------------------------------------------------*/
312 static int snd_es1938_get_byte(struct es1938 *chip)
313 {
314         int i;
315         unsigned char v;
316         for (i = GET_LOOP_TIMEOUT; i; i--)
317                 if ((v = inb(SLSB_REG(chip, STATUS))) & 0x80)
318                         return inb(SLSB_REG(chip, READDATA));
319         dev_err(chip->card->dev, "get_byte timeout: status 0x02%x\n", v);
320         return -ENODEV;
321 }
322 
323 /* -----------------------------------------------------------------
324  * Write value cmd register
325  * -----------------------------------------------------------------*/
326 static void snd_es1938_write(struct es1938 *chip, unsigned char reg, unsigned char val)
327 {
328         unsigned long flags;
329         spin_lock_irqsave(&chip->reg_lock, flags);
330         snd_es1938_write_cmd(chip, reg);
331         snd_es1938_write_cmd(chip, val);
332         spin_unlock_irqrestore(&chip->reg_lock, flags);
333         dev_dbg(chip->card->dev, "Reg %02x set to %02x\n", reg, val);
334 }
335 
336 /* -----------------------------------------------------------------
337  * Read data from cmd register and return it
338  * -----------------------------------------------------------------*/
339 static unsigned char snd_es1938_read(struct es1938 *chip, unsigned char reg)
340 {
341         unsigned char val;
342         unsigned long flags;
343         spin_lock_irqsave(&chip->reg_lock, flags);
344         snd_es1938_write_cmd(chip, ESS_CMD_READREG);
345         snd_es1938_write_cmd(chip, reg);
346         val = snd_es1938_get_byte(chip);
347         spin_unlock_irqrestore(&chip->reg_lock, flags);
348         dev_dbg(chip->card->dev, "Reg %02x now is %02x\n", reg, val);
349         return val;
350 }
351 
352 /* -----------------------------------------------------------------
353  * Write data to cmd register and return old value
354  * -----------------------------------------------------------------*/
355 static int snd_es1938_bits(struct es1938 *chip, unsigned char reg, unsigned char mask,
356                            unsigned char val)
357 {
358         unsigned long flags;
359         unsigned char old, new, oval;
360         spin_lock_irqsave(&chip->reg_lock, flags);
361         snd_es1938_write_cmd(chip, ESS_CMD_READREG);
362         snd_es1938_write_cmd(chip, reg);
363         old = snd_es1938_get_byte(chip);
364         oval = old & mask;
365         if (val != oval) {
366                 snd_es1938_write_cmd(chip, reg);
367                 new = (old & ~mask) | (val & mask);
368                 snd_es1938_write_cmd(chip, new);
369                 dev_dbg(chip->card->dev, "Reg %02x was %02x, set to %02x\n",
370                            reg, old, new);
371         }
372         spin_unlock_irqrestore(&chip->reg_lock, flags);
373         return oval;
374 }
375 
376 /* --------------------------------------------------------------------
377  * Reset the chip
378  * --------------------------------------------------------------------*/
379 static void snd_es1938_reset(struct es1938 *chip)
380 {
381         int i;
382 
383         outb(3, SLSB_REG(chip, RESET));
384         inb(SLSB_REG(chip, RESET));
385         outb(0, SLSB_REG(chip, RESET));
386         for (i = 0; i < RESET_LOOP_TIMEOUT; i++) {
387                 if (inb(SLSB_REG(chip, STATUS)) & 0x80) {
388                         if (inb(SLSB_REG(chip, READDATA)) == 0xaa)
389                                 goto __next;
390                 }
391         }
392         dev_err(chip->card->dev, "ESS Solo-1 reset failed\n");
393 
394      __next:
395         snd_es1938_write_cmd(chip, ESS_CMD_ENABLEEXT);
396 
397         /* Demand transfer DMA: 4 bytes per DMA request */
398         snd_es1938_write(chip, ESS_CMD_DMATYPE, 2);
399 
400         /* Change behaviour of register A1
401            4x oversampling
402            2nd channel DAC asynchronous */                                                      
403         snd_es1938_mixer_write(chip, ESSSB_IREG_AUDIO2MODE, 0x32);
404         /* enable/select DMA channel and IRQ channel */
405         snd_es1938_bits(chip, ESS_CMD_IRQCONTROL, 0xf0, 0x50);
406         snd_es1938_bits(chip, ESS_CMD_DRQCONTROL, 0xf0, 0x50);
407         snd_es1938_write_cmd(chip, ESS_CMD_ENABLEAUDIO1);
408         /* Set spatializer parameters to recommended values */
409         snd_es1938_mixer_write(chip, 0x54, 0x8f);
410         snd_es1938_mixer_write(chip, 0x56, 0x95);
411         snd_es1938_mixer_write(chip, 0x58, 0x94);
412         snd_es1938_mixer_write(chip, 0x5a, 0x80);
413 }
414 
415 /* --------------------------------------------------------------------
416  * Reset the FIFOs
417  * --------------------------------------------------------------------*/
418 static void snd_es1938_reset_fifo(struct es1938 *chip)
419 {
420         outb(2, SLSB_REG(chip, RESET));
421         outb(0, SLSB_REG(chip, RESET));
422 }
423 
424 static const struct snd_ratnum clocks[2] = {
425         {
426                 .num = 793800,
427                 .den_min = 1,
428                 .den_max = 128,
429                 .den_step = 1,
430         },
431         {
432                 .num = 768000,
433                 .den_min = 1,
434                 .den_max = 128,
435                 .den_step = 1,
436         }
437 };
438 
439 static const struct snd_pcm_hw_constraint_ratnums hw_constraints_clocks = {
440         .nrats = 2,
441         .rats = clocks,
442 };
443 
444 
445 static void snd_es1938_rate_set(struct es1938 *chip, 
446                                 struct snd_pcm_substream *substream,
447                                 int mode)
448 {
449         unsigned int bits, div0;
450         struct snd_pcm_runtime *runtime = substream->runtime;
451         if (runtime->rate_num == clocks[0].num)
452                 bits = 128 - runtime->rate_den;
453         else
454                 bits = 256 - runtime->rate_den;
455 
456         /* set filter register */
457         div0 = 256 - 7160000*20/(8*82*runtime->rate);
458                 
459         if (mode == DAC2) {
460                 snd_es1938_mixer_write(chip, 0x70, bits);
461                 snd_es1938_mixer_write(chip, 0x72, div0);
462         } else {
463                 snd_es1938_write(chip, 0xA1, bits);
464                 snd_es1938_write(chip, 0xA2, div0);
465         }
466 }
467 
468 /* --------------------------------------------------------------------
469  * Configure Solo1 builtin DMA Controller
470  * --------------------------------------------------------------------*/
471 
472 static void snd_es1938_playback1_setdma(struct es1938 *chip)
473 {
474         outb(0x00, SLIO_REG(chip, AUDIO2MODE));
475         outl(chip->dma2_start, SLIO_REG(chip, AUDIO2DMAADDR));
476         outw(0, SLIO_REG(chip, AUDIO2DMACOUNT));
477         outw(chip->dma2_size, SLIO_REG(chip, AUDIO2DMACOUNT));
478 }
479 
480 static void snd_es1938_playback2_setdma(struct es1938 *chip)
481 {
482         /* Enable DMA controller */
483         outb(0xc4, SLDM_REG(chip, DMACOMMAND));
484         /* 1. Master reset */
485         outb(0, SLDM_REG(chip, DMACLEAR));
486         /* 2. Mask DMA */
487         outb(1, SLDM_REG(chip, DMAMASK));
488         outb(0x18, SLDM_REG(chip, DMAMODE));
489         outl(chip->dma1_start, SLDM_REG(chip, DMAADDR));
490         outw(chip->dma1_size - 1, SLDM_REG(chip, DMACOUNT));
491         /* 3. Unmask DMA */
492         outb(0, SLDM_REG(chip, DMAMASK));
493 }
494 
495 static void snd_es1938_capture_setdma(struct es1938 *chip)
496 {
497         /* Enable DMA controller */
498         outb(0xc4, SLDM_REG(chip, DMACOMMAND));
499         /* 1. Master reset */
500         outb(0, SLDM_REG(chip, DMACLEAR));
501         /* 2. Mask DMA */
502         outb(1, SLDM_REG(chip, DMAMASK));
503         outb(0x14, SLDM_REG(chip, DMAMODE));
504         outl(chip->dma1_start, SLDM_REG(chip, DMAADDR));
505         chip->last_capture_dmaaddr = chip->dma1_start;
506         outw(chip->dma1_size - 1, SLDM_REG(chip, DMACOUNT));
507         /* 3. Unmask DMA */
508         outb(0, SLDM_REG(chip, DMAMASK));
509 }
510 
511 /* ----------------------------------------------------------------------
512  *
513  *                           *** PCM part ***
514  */
515 
516 static int snd_es1938_capture_trigger(struct snd_pcm_substream *substream,
517                                       int cmd)
518 {
519         struct es1938 *chip = snd_pcm_substream_chip(substream);
520         int val;
521         switch (cmd) {
522         case SNDRV_PCM_TRIGGER_START:
523         case SNDRV_PCM_TRIGGER_RESUME:
524                 val = 0x0f;
525                 chip->active |= ADC1;
526                 break;
527         case SNDRV_PCM_TRIGGER_STOP:
528         case SNDRV_PCM_TRIGGER_SUSPEND:
529                 val = 0x00;
530                 chip->active &= ~ADC1;
531                 break;
532         default:
533                 return -EINVAL;
534         }
535         snd_es1938_write(chip, ESS_CMD_DMACONTROL, val);
536         return 0;
537 }
538 
539 static int snd_es1938_playback1_trigger(struct snd_pcm_substream *substream,
540                                         int cmd)
541 {
542         struct es1938 *chip = snd_pcm_substream_chip(substream);
543         switch (cmd) {
544         case SNDRV_PCM_TRIGGER_START:
545         case SNDRV_PCM_TRIGGER_RESUME:
546                 /* According to the documentation this should be:
547                    0x13 but that value may randomly swap stereo channels */
548                 snd_es1938_mixer_write(chip, ESSSB_IREG_AUDIO2CONTROL1, 0x92);
549                 udelay(10);
550                 snd_es1938_mixer_write(chip, ESSSB_IREG_AUDIO2CONTROL1, 0x93);
551                 /* This two stage init gives the FIFO -> DAC connection time to
552                  * settle before first data from DMA flows in.  This should ensure
553                  * no swapping of stereo channels.  Report a bug if otherwise :-) */
554                 outb(0x0a, SLIO_REG(chip, AUDIO2MODE));
555                 chip->active |= DAC2;
556                 break;
557         case SNDRV_PCM_TRIGGER_STOP:
558         case SNDRV_PCM_TRIGGER_SUSPEND:
559                 outb(0, SLIO_REG(chip, AUDIO2MODE));
560                 snd_es1938_mixer_write(chip, ESSSB_IREG_AUDIO2CONTROL1, 0);
561                 chip->active &= ~DAC2;
562                 break;
563         default:
564                 return -EINVAL;
565         }
566         return 0;
567 }
568 
569 static int snd_es1938_playback2_trigger(struct snd_pcm_substream *substream,
570                                         int cmd)
571 {
572         struct es1938 *chip = snd_pcm_substream_chip(substream);
573         int val;
574         switch (cmd) {
575         case SNDRV_PCM_TRIGGER_START:
576         case SNDRV_PCM_TRIGGER_RESUME:
577                 val = 5;
578                 chip->active |= DAC1;
579                 break;
580         case SNDRV_PCM_TRIGGER_STOP:
581         case SNDRV_PCM_TRIGGER_SUSPEND:
582                 val = 0;
583                 chip->active &= ~DAC1;
584                 break;
585         default:
586                 return -EINVAL;
587         }
588         snd_es1938_write(chip, ESS_CMD_DMACONTROL, val);
589         return 0;
590 }
591 
592 static int snd_es1938_playback_trigger(struct snd_pcm_substream *substream,
593                                        int cmd)
594 {
595         switch (substream->number) {
596         case 0:
597                 return snd_es1938_playback1_trigger(substream, cmd);
598         case 1:
599                 return snd_es1938_playback2_trigger(substream, cmd);
600         }
601         snd_BUG();
602         return -EINVAL;
603 }
604 
605 /* --------------------------------------------------------------------
606  * First channel for Extended Mode Audio 1 ADC Operation
607  * --------------------------------------------------------------------*/
608 static int snd_es1938_capture_prepare(struct snd_pcm_substream *substream)
609 {
610         struct es1938 *chip = snd_pcm_substream_chip(substream);
611         struct snd_pcm_runtime *runtime = substream->runtime;
612         int u, is8, mono;
613         unsigned int size = snd_pcm_lib_buffer_bytes(substream);
614         unsigned int count = snd_pcm_lib_period_bytes(substream);
615 
616         chip->dma1_size = size;
617         chip->dma1_start = runtime->dma_addr;
618 
619         mono = (runtime->channels > 1) ? 0 : 1;
620         is8 = snd_pcm_format_width(runtime->format) == 16 ? 0 : 1;
621         u = snd_pcm_format_unsigned(runtime->format);
622 
623         chip->dma1_shift = 2 - mono - is8;
624 
625         snd_es1938_reset_fifo(chip);
626         
627         /* program type */
628         snd_es1938_bits(chip, ESS_CMD_ANALOGCONTROL, 0x03, (mono ? 2 : 1));
629 
630         /* set clock and counters */
631         snd_es1938_rate_set(chip, substream, ADC1);
632 
633         count = 0x10000 - count;
634         snd_es1938_write(chip, ESS_CMD_DMACNTRELOADL, count & 0xff);
635         snd_es1938_write(chip, ESS_CMD_DMACNTRELOADH, count >> 8);
636 
637         /* initialize and configure ADC */
638         snd_es1938_write(chip, ESS_CMD_SETFORMAT2, u ? 0x51 : 0x71);
639         snd_es1938_write(chip, ESS_CMD_SETFORMAT2, 0x90 | 
640                        (u ? 0x00 : 0x20) | 
641                        (is8 ? 0x00 : 0x04) | 
642                        (mono ? 0x40 : 0x08));
643 
644         //      snd_es1938_reset_fifo(chip);    
645 
646         /* 11. configure system interrupt controller and DMA controller */
647         snd_es1938_capture_setdma(chip);
648 
649         return 0;
650 }
651 
652 
653 /* ------------------------------------------------------------------------------
654  * Second Audio channel DAC Operation
655  * ------------------------------------------------------------------------------*/
656 static int snd_es1938_playback1_prepare(struct snd_pcm_substream *substream)
657 {
658         struct es1938 *chip = snd_pcm_substream_chip(substream);
659         struct snd_pcm_runtime *runtime = substream->runtime;
660         int u, is8, mono;
661         unsigned int size = snd_pcm_lib_buffer_bytes(substream);
662         unsigned int count = snd_pcm_lib_period_bytes(substream);
663 
664         chip->dma2_size = size;
665         chip->dma2_start = runtime->dma_addr;
666 
667         mono = (runtime->channels > 1) ? 0 : 1;
668         is8 = snd_pcm_format_width(runtime->format) == 16 ? 0 : 1;
669         u = snd_pcm_format_unsigned(runtime->format);
670 
671         chip->dma2_shift = 2 - mono - is8;
672 
673         snd_es1938_reset_fifo(chip);
674 
675         /* set clock and counters */
676         snd_es1938_rate_set(chip, substream, DAC2);
677 
678         count >>= 1;
679         count = 0x10000 - count;
680         snd_es1938_mixer_write(chip, ESSSB_IREG_AUDIO2TCOUNTL, count & 0xff);
681         snd_es1938_mixer_write(chip, ESSSB_IREG_AUDIO2TCOUNTH, count >> 8);
682 
683         /* initialize and configure Audio 2 DAC */
684         snd_es1938_mixer_write(chip, ESSSB_IREG_AUDIO2CONTROL2, 0x40 | (u ? 0 : 4) |
685                                (mono ? 0 : 2) | (is8 ? 0 : 1));
686 
687         /* program DMA */
688         snd_es1938_playback1_setdma(chip);
689         
690         return 0;
691 }
692 
693 static int snd_es1938_playback2_prepare(struct snd_pcm_substream *substream)
694 {
695         struct es1938 *chip = snd_pcm_substream_chip(substream);
696         struct snd_pcm_runtime *runtime = substream->runtime;
697         int u, is8, mono;
698         unsigned int size = snd_pcm_lib_buffer_bytes(substream);
699         unsigned int count = snd_pcm_lib_period_bytes(substream);
700 
701         chip->dma1_size = size;
702         chip->dma1_start = runtime->dma_addr;
703 
704         mono = (runtime->channels > 1) ? 0 : 1;
705         is8 = snd_pcm_format_width(runtime->format) == 16 ? 0 : 1;
706         u = snd_pcm_format_unsigned(runtime->format);
707 
708         chip->dma1_shift = 2 - mono - is8;
709 
710         count = 0x10000 - count;
711  
712         /* reset */
713         snd_es1938_reset_fifo(chip);
714         
715         snd_es1938_bits(chip, ESS_CMD_ANALOGCONTROL, 0x03, (mono ? 2 : 1));
716 
717         /* set clock and counters */
718         snd_es1938_rate_set(chip, substream, DAC1);
719         snd_es1938_write(chip, ESS_CMD_DMACNTRELOADL, count & 0xff);
720         snd_es1938_write(chip, ESS_CMD_DMACNTRELOADH, count >> 8);
721 
722         /* initialized and configure DAC */
723         snd_es1938_write(chip, ESS_CMD_SETFORMAT, u ? 0x80 : 0x00);
724         snd_es1938_write(chip, ESS_CMD_SETFORMAT, u ? 0x51 : 0x71);
725         snd_es1938_write(chip, ESS_CMD_SETFORMAT2, 
726                          0x90 | (mono ? 0x40 : 0x08) |
727                          (is8 ? 0x00 : 0x04) | (u ? 0x00 : 0x20));
728 
729         /* program DMA */
730         snd_es1938_playback2_setdma(chip);
731         
732         return 0;
733 }
734 
735 static int snd_es1938_playback_prepare(struct snd_pcm_substream *substream)
736 {
737         switch (substream->number) {
738         case 0:
739                 return snd_es1938_playback1_prepare(substream);
740         case 1:
741                 return snd_es1938_playback2_prepare(substream);
742         }
743         snd_BUG();
744         return -EINVAL;
745 }
746 
747 /* during the incrementing of dma counters the DMA register reads sometimes
748    returns garbage. To ensure a valid hw pointer, the following checks which
749    should be very unlikely to fail are used:
750    - is the current DMA address in the valid DMA range ?
751    - is the sum of DMA address and DMA counter pointing to the last DMA byte ?
752    One can argue this could differ by one byte depending on which register is
753    updated first, so the implementation below allows for that.
754 */
755 static snd_pcm_uframes_t snd_es1938_capture_pointer(struct snd_pcm_substream *substream)
756 {
757         struct es1938 *chip = snd_pcm_substream_chip(substream);
758         size_t ptr;
759 #if 0
760         size_t old, new;
761         /* This stuff is *needed*, don't ask why - AB */
762         old = inw(SLDM_REG(chip, DMACOUNT));
763         while ((new = inw(SLDM_REG(chip, DMACOUNT))) != old)
764                 old = new;
765         ptr = chip->dma1_size - 1 - new;
766 #else
767         size_t count;
768         unsigned int diff;
769 
770         ptr = inl(SLDM_REG(chip, DMAADDR));
771         count = inw(SLDM_REG(chip, DMACOUNT));
772         diff = chip->dma1_start + chip->dma1_size - ptr - count;
773 
774         if (diff > 3 || ptr < chip->dma1_start
775               || ptr >= chip->dma1_start+chip->dma1_size)
776           ptr = chip->last_capture_dmaaddr;            /* bad, use last saved */
777         else
778           chip->last_capture_dmaaddr = ptr;            /* good, remember it */
779 
780         ptr -= chip->dma1_start;
781 #endif
782         return ptr >> chip->dma1_shift;
783 }
784 
785 static snd_pcm_uframes_t snd_es1938_playback1_pointer(struct snd_pcm_substream *substream)
786 {
787         struct es1938 *chip = snd_pcm_substream_chip(substream);
788         size_t ptr;
789 #if 1
790         ptr = chip->dma2_size - inw(SLIO_REG(chip, AUDIO2DMACOUNT));
791 #else
792         ptr = inl(SLIO_REG(chip, AUDIO2DMAADDR)) - chip->dma2_start;
793 #endif
794         return ptr >> chip->dma2_shift;
795 }
796 
797 static snd_pcm_uframes_t snd_es1938_playback2_pointer(struct snd_pcm_substream *substream)
798 {
799         struct es1938 *chip = snd_pcm_substream_chip(substream);
800         size_t ptr;
801         size_t old, new;
802 #if 1
803         /* This stuff is *needed*, don't ask why - AB */
804         old = inw(SLDM_REG(chip, DMACOUNT));
805         while ((new = inw(SLDM_REG(chip, DMACOUNT))) != old)
806                 old = new;
807         ptr = chip->dma1_size - 1 - new;
808 #else
809         ptr = inl(SLDM_REG(chip, DMAADDR)) - chip->dma1_start;
810 #endif
811         return ptr >> chip->dma1_shift;
812 }
813 
814 static snd_pcm_uframes_t snd_es1938_playback_pointer(struct snd_pcm_substream *substream)
815 {
816         switch (substream->number) {
817         case 0:
818                 return snd_es1938_playback1_pointer(substream);
819         case 1:
820                 return snd_es1938_playback2_pointer(substream);
821         }
822         snd_BUG();
823         return -EINVAL;
824 }
825 
826 static int snd_es1938_capture_copy(struct snd_pcm_substream *substream,
827                                    int channel, unsigned long pos,
828                                    void __user *dst, unsigned long count)
829 {
830         struct snd_pcm_runtime *runtime = substream->runtime;
831         struct es1938 *chip = snd_pcm_substream_chip(substream);
832 
833         if (snd_BUG_ON(pos + count > chip->dma1_size))
834                 return -EINVAL;
835         if (pos + count < chip->dma1_size) {
836                 if (copy_to_user(dst, runtime->dma_area + pos + 1, count))
837                         return -EFAULT;
838         } else {
839                 if (copy_to_user(dst, runtime->dma_area + pos + 1, count - 1))
840                         return -EFAULT;
841                 if (put_user(runtime->dma_area[0],
842                              ((unsigned char __user *)dst) + count - 1))
843                         return -EFAULT;
844         }
845         return 0;
846 }
847 
848 static int snd_es1938_capture_copy_kernel(struct snd_pcm_substream *substream,
849                                           int channel, unsigned long pos,
850                                           void *dst, unsigned long count)
851 {
852         struct snd_pcm_runtime *runtime = substream->runtime;
853         struct es1938 *chip = snd_pcm_substream_chip(substream);
854 
855         if (snd_BUG_ON(pos + count > chip->dma1_size))
856                 return -EINVAL;
857         if (pos + count < chip->dma1_size) {
858                 memcpy(dst, runtime->dma_area + pos + 1, count);
859         } else {
860                 memcpy(dst, runtime->dma_area + pos + 1, count - 1);
861                 runtime->dma_area[0] = *((unsigned char *)dst + count - 1);
862         }
863         return 0;
864 }
865 
866 /*
867  * buffer management
868  */
869 static int snd_es1938_pcm_hw_params(struct snd_pcm_substream *substream,
870                                     struct snd_pcm_hw_params *hw_params)
871 
872 {
873         int err;
874 
875         if ((err = snd_pcm_lib_malloc_pages(substream, params_buffer_bytes(hw_params))) < 0)
876                 return err;
877         return 0;
878 }
879 
880 static int snd_es1938_pcm_hw_free(struct snd_pcm_substream *substream)
881 {
882         return snd_pcm_lib_free_pages(substream);
883 }
884 
885 /* ----------------------------------------------------------------------
886  * Audio1 Capture (ADC)
887  * ----------------------------------------------------------------------*/
888 static const struct snd_pcm_hardware snd_es1938_capture =
889 {
890         .info =                 (SNDRV_PCM_INFO_INTERLEAVED |
891                                 SNDRV_PCM_INFO_BLOCK_TRANSFER),
892         .formats =              (SNDRV_PCM_FMTBIT_U8 | SNDRV_PCM_FMTBIT_S16_LE |
893                                  SNDRV_PCM_FMTBIT_S8 | SNDRV_PCM_FMTBIT_U16_LE),
894         .rates =                SNDRV_PCM_RATE_CONTINUOUS | SNDRV_PCM_RATE_8000_48000,
895         .rate_min =             6000,
896         .rate_max =             48000,
897         .channels_min =         1,
898         .channels_max =         2,
899         .buffer_bytes_max =     0x8000,       /* DMA controller screws on higher values */
900         .period_bytes_min =     64,
901         .period_bytes_max =     0x8000,
902         .periods_min =          1,
903         .periods_max =          1024,
904         .fifo_size =            256,
905 };
906 
907 /* -----------------------------------------------------------------------
908  * Audio2 Playback (DAC)
909  * -----------------------------------------------------------------------*/
910 static const struct snd_pcm_hardware snd_es1938_playback =
911 {
912         .info =                 (SNDRV_PCM_INFO_MMAP | SNDRV_PCM_INFO_INTERLEAVED |
913                                  SNDRV_PCM_INFO_BLOCK_TRANSFER |
914                                  SNDRV_PCM_INFO_MMAP_VALID),
915         .formats =              (SNDRV_PCM_FMTBIT_U8 | SNDRV_PCM_FMTBIT_S16_LE |
916                                  SNDRV_PCM_FMTBIT_S8 | SNDRV_PCM_FMTBIT_U16_LE),
917         .rates =                SNDRV_PCM_RATE_CONTINUOUS | SNDRV_PCM_RATE_8000_48000,
918         .rate_min =             6000,
919         .rate_max =             48000,
920         .channels_min =         1,
921         .channels_max =         2,
922         .buffer_bytes_max =     0x8000,       /* DMA controller screws on higher values */
923         .period_bytes_min =     64,
924         .period_bytes_max =     0x8000,
925         .periods_min =          1,
926         .periods_max =          1024,
927         .fifo_size =            256,
928 };
929 
930 static int snd_es1938_capture_open(struct snd_pcm_substream *substream)
931 {
932         struct es1938 *chip = snd_pcm_substream_chip(substream);
933         struct snd_pcm_runtime *runtime = substream->runtime;
934 
935         if (chip->playback2_substream)
936                 return -EAGAIN;
937         chip->capture_substream = substream;
938         runtime->hw = snd_es1938_capture;
939         snd_pcm_hw_constraint_ratnums(runtime, 0, SNDRV_PCM_HW_PARAM_RATE,
940                                       &hw_constraints_clocks);
941         snd_pcm_hw_constraint_minmax(runtime, SNDRV_PCM_HW_PARAM_BUFFER_BYTES, 0, 0xff00);
942         return 0;
943 }
944 
945 static int snd_es1938_playback_open(struct snd_pcm_substream *substream)
946 {
947         struct es1938 *chip = snd_pcm_substream_chip(substream);
948         struct snd_pcm_runtime *runtime = substream->runtime;
949 
950         switch (substream->number) {
951         case 0:
952                 chip->playback1_substream = substream;
953                 break;
954         case 1:
955                 if (chip->capture_substream)
956                         return -EAGAIN;
957                 chip->playback2_substream = substream;
958                 break;
959         default:
960                 snd_BUG();
961                 return -EINVAL;
962         }
963         runtime->hw = snd_es1938_playback;
964         snd_pcm_hw_constraint_ratnums(runtime, 0, SNDRV_PCM_HW_PARAM_RATE,
965                                       &hw_constraints_clocks);
966         snd_pcm_hw_constraint_minmax(runtime, SNDRV_PCM_HW_PARAM_BUFFER_BYTES, 0, 0xff00);
967         return 0;
968 }
969 
970 static int snd_es1938_capture_close(struct snd_pcm_substream *substream)
971 {
972         struct es1938 *chip = snd_pcm_substream_chip(substream);
973 
974         chip->capture_substream = NULL;
975         return 0;
976 }
977 
978 static int snd_es1938_playback_close(struct snd_pcm_substream *substream)
979 {
980         struct es1938 *chip = snd_pcm_substream_chip(substream);
981 
982         switch (substream->number) {
983         case 0:
984                 chip->playback1_substream = NULL;
985                 break;
986         case 1:
987                 chip->playback2_substream = NULL;
988                 break;
989         default:
990                 snd_BUG();
991                 return -EINVAL;
992         }
993         return 0;
994 }
995 
996 static const struct snd_pcm_ops snd_es1938_playback_ops = {
997         .open =         snd_es1938_playback_open,
998         .close =        snd_es1938_playback_close,
999         .ioctl =        snd_pcm_lib_ioctl,
1000         .hw_params =    snd_es1938_pcm_hw_params,
1001         .hw_free =      snd_es1938_pcm_hw_free,
1002         .prepare =      snd_es1938_playback_prepare,
1003         .trigger =      snd_es1938_playback_trigger,
1004         .pointer =      snd_es1938_playback_pointer,
1005 };
1006 
1007 static const struct snd_pcm_ops snd_es1938_capture_ops = {
1008         .open =         snd_es1938_capture_open,
1009         .close =        snd_es1938_capture_close,
1010         .ioctl =        snd_pcm_lib_ioctl,
1011         .hw_params =    snd_es1938_pcm_hw_params,
1012         .hw_free =      snd_es1938_pcm_hw_free,
1013         .prepare =      snd_es1938_capture_prepare,
1014         .trigger =      snd_es1938_capture_trigger,
1015         .pointer =      snd_es1938_capture_pointer,
1016         .copy_user =    snd_es1938_capture_copy,
1017         .copy_kernel =  snd_es1938_capture_copy_kernel,
1018 };
1019 
1020 static int snd_es1938_new_pcm(struct es1938 *chip, int device)
1021 {
1022         struct snd_pcm *pcm;
1023         int err;
1024 
1025         if ((err = snd_pcm_new(chip->card, "es-1938-1946", device, 2, 1, &pcm)) < 0)
1026                 return err;
1027         snd_pcm_set_ops(pcm, SNDRV_PCM_STREAM_PLAYBACK, &snd_es1938_playback_ops);
1028         snd_pcm_set_ops(pcm, SNDRV_PCM_STREAM_CAPTURE, &snd_es1938_capture_ops);
1029         
1030         pcm->private_data = chip;
1031         pcm->info_flags = 0;
1032         strcpy(pcm->name, "ESS Solo-1");
1033 
1034         snd_pcm_lib_preallocate_pages_for_all(pcm, SNDRV_DMA_TYPE_DEV,
1035                                               snd_dma_pci_data(chip->pci), 64*1024, 64*1024);
1036 
1037         chip->pcm = pcm;
1038         return 0;
1039 }
1040 
1041 /* -------------------------------------------------------------------
1042  * 
1043  *                       *** Mixer part ***
1044  */
1045 
1046 static int snd_es1938_info_mux(struct snd_kcontrol *kcontrol,
1047                                struct snd_ctl_elem_info *uinfo)
1048 {
1049         static const char * const texts[8] = {
1050                 "Mic", "Mic Master", "CD", "AOUT",
1051                 "Mic1", "Mix", "Line", "Master"
1052         };
1053 
1054         return snd_ctl_enum_info(uinfo, 1, 8, texts);
1055 }
1056 
1057 static int snd_es1938_get_mux(struct snd_kcontrol *kcontrol,
1058                               struct snd_ctl_elem_value *ucontrol)
1059 {
1060         struct es1938 *chip = snd_kcontrol_chip(kcontrol);
1061         ucontrol->value.enumerated.item[0] = snd_es1938_mixer_read(chip, 0x1c) & 0x07;
1062         return 0;
1063 }
1064 
1065 static int snd_es1938_put_mux(struct snd_kcontrol *kcontrol,
1066                               struct snd_ctl_elem_value *ucontrol)
1067 {
1068         struct es1938 *chip = snd_kcontrol_chip(kcontrol);
1069         unsigned char val = ucontrol->value.enumerated.item[0];
1070         
1071         if (val > 7)
1072                 return -EINVAL;
1073         return snd_es1938_mixer_bits(chip, 0x1c, 0x07, val) != val;
1074 }
1075 
1076 #define snd_es1938_info_spatializer_enable      snd_ctl_boolean_mono_info
1077 
1078 static int snd_es1938_get_spatializer_enable(struct snd_kcontrol *kcontrol,
1079                                              struct snd_ctl_elem_value *ucontrol)
1080 {
1081         struct es1938 *chip = snd_kcontrol_chip(kcontrol);
1082         unsigned char val = snd_es1938_mixer_read(chip, 0x50);
1083         ucontrol->value.integer.value[0] = !!(val & 8);
1084         return 0;
1085 }
1086 
1087 static int snd_es1938_put_spatializer_enable(struct snd_kcontrol *kcontrol,
1088                                              struct snd_ctl_elem_value *ucontrol)
1089 {
1090         struct es1938 *chip = snd_kcontrol_chip(kcontrol);
1091         unsigned char oval, nval;
1092         int change;
1093         nval = ucontrol->value.integer.value[0] ? 0x0c : 0x04;
1094         oval = snd_es1938_mixer_read(chip, 0x50) & 0x0c;
1095         change = nval != oval;
1096         if (change) {
1097                 snd_es1938_mixer_write(chip, 0x50, nval & ~0x04);
1098                 snd_es1938_mixer_write(chip, 0x50, nval);
1099         }
1100         return change;
1101 }
1102 
1103 static int snd_es1938_info_hw_volume(struct snd_kcontrol *kcontrol,
1104                                      struct snd_ctl_elem_info *uinfo)
1105 {
1106         uinfo->type = SNDRV_CTL_ELEM_TYPE_INTEGER;
1107         uinfo->count = 2;
1108         uinfo->value.integer.min = 0;
1109         uinfo->value.integer.max = 63;
1110         return 0;
1111 }
1112 
1113 static int snd_es1938_get_hw_volume(struct snd_kcontrol *kcontrol,
1114                                     struct snd_ctl_elem_value *ucontrol)
1115 {
1116         struct es1938 *chip = snd_kcontrol_chip(kcontrol);
1117         ucontrol->value.integer.value[0] = snd_es1938_mixer_read(chip, 0x61) & 0x3f;
1118         ucontrol->value.integer.value[1] = snd_es1938_mixer_read(chip, 0x63) & 0x3f;
1119         return 0;
1120 }
1121 
1122 #define snd_es1938_info_hw_switch               snd_ctl_boolean_stereo_info
1123 
1124 static int snd_es1938_get_hw_switch(struct snd_kcontrol *kcontrol,
1125                                     struct snd_ctl_elem_value *ucontrol)
1126 {
1127         struct es1938 *chip = snd_kcontrol_chip(kcontrol);
1128         ucontrol->value.integer.value[0] = !(snd_es1938_mixer_read(chip, 0x61) & 0x40);
1129         ucontrol->value.integer.value[1] = !(snd_es1938_mixer_read(chip, 0x63) & 0x40);
1130         return 0;
1131 }
1132 
1133 static void snd_es1938_hwv_free(struct snd_kcontrol *kcontrol)
1134 {
1135         struct es1938 *chip = snd_kcontrol_chip(kcontrol);
1136         chip->master_volume = NULL;
1137         chip->master_switch = NULL;
1138         chip->hw_volume = NULL;
1139         chip->hw_switch = NULL;
1140 }
1141 
1142 static int snd_es1938_reg_bits(struct es1938 *chip, unsigned char reg,
1143                                unsigned char mask, unsigned char val)
1144 {
1145         if (reg < 0xa0)
1146                 return snd_es1938_mixer_bits(chip, reg, mask, val);
1147         else
1148                 return snd_es1938_bits(chip, reg, mask, val);
1149 }
1150 
1151 static int snd_es1938_reg_read(struct es1938 *chip, unsigned char reg)
1152 {
1153         if (reg < 0xa0)
1154                 return snd_es1938_mixer_read(chip, reg);
1155         else
1156                 return snd_es1938_read(chip, reg);
1157 }
1158 
1159 #define ES1938_SINGLE_TLV(xname, xindex, reg, shift, mask, invert, xtlv)    \
1160 { .iface = SNDRV_CTL_ELEM_IFACE_MIXER, \
1161   .access = SNDRV_CTL_ELEM_ACCESS_READWRITE | SNDRV_CTL_ELEM_ACCESS_TLV_READ,\
1162   .name = xname, .index = xindex, \
1163   .info = snd_es1938_info_single, \
1164   .get = snd_es1938_get_single, .put = snd_es1938_put_single, \
1165   .private_value = reg | (shift << 8) | (mask << 16) | (invert << 24), \
1166   .tlv = { .p = xtlv } }
1167 #define ES1938_SINGLE(xname, xindex, reg, shift, mask, invert) \
1168 { .iface = SNDRV_CTL_ELEM_IFACE_MIXER, .name = xname, .index = xindex, \
1169   .info = snd_es1938_info_single, \
1170   .get = snd_es1938_get_single, .put = snd_es1938_put_single, \
1171   .private_value = reg | (shift << 8) | (mask << 16) | (invert << 24) }
1172 
1173 static int snd_es1938_info_single(struct snd_kcontrol *kcontrol,
1174                                   struct snd_ctl_elem_info *uinfo)
1175 {
1176         int mask = (kcontrol->private_value >> 16) & 0xff;
1177 
1178         uinfo->type = mask == 1 ? SNDRV_CTL_ELEM_TYPE_BOOLEAN : SNDRV_CTL_ELEM_TYPE_INTEGER;
1179         uinfo->count = 1;
1180         uinfo->value.integer.min = 0;
1181         uinfo->value.integer.max = mask;
1182         return 0;
1183 }
1184 
1185 static int snd_es1938_get_single(struct snd_kcontrol *kcontrol,
1186                                  struct snd_ctl_elem_value *ucontrol)
1187 {
1188         struct es1938 *chip = snd_kcontrol_chip(kcontrol);
1189         int reg = kcontrol->private_value & 0xff;
1190         int shift = (kcontrol->private_value >> 8) & 0xff;
1191         int mask = (kcontrol->private_value >> 16) & 0xff;
1192         int invert = (kcontrol->private_value >> 24) & 0xff;
1193         int val;
1194         
1195         val = snd_es1938_reg_read(chip, reg);
1196         ucontrol->value.integer.value[0] = (val >> shift) & mask;
1197         if (invert)
1198                 ucontrol->value.integer.value[0] = mask - ucontrol->value.integer.value[0];
1199         return 0;
1200 }
1201 
1202 static int snd_es1938_put_single(struct snd_kcontrol *kcontrol,
1203                                  struct snd_ctl_elem_value *ucontrol)
1204 {
1205         struct es1938 *chip = snd_kcontrol_chip(kcontrol);
1206         int reg = kcontrol->private_value & 0xff;
1207         int shift = (kcontrol->private_value >> 8) & 0xff;
1208         int mask = (kcontrol->private_value >> 16) & 0xff;
1209         int invert = (kcontrol->private_value >> 24) & 0xff;
1210         unsigned char val;
1211         
1212         val = (ucontrol->value.integer.value[0] & mask);
1213         if (invert)
1214                 val = mask - val;
1215         mask <<= shift;
1216         val <<= shift;
1217         return snd_es1938_reg_bits(chip, reg, mask, val) != val;
1218 }
1219 
1220 #define ES1938_DOUBLE_TLV(xname, xindex, left_reg, right_reg, shift_left, shift_right, mask, invert, xtlv) \
1221 { .iface = SNDRV_CTL_ELEM_IFACE_MIXER, \
1222   .access = SNDRV_CTL_ELEM_ACCESS_READWRITE | SNDRV_CTL_ELEM_ACCESS_TLV_READ,\
1223   .name = xname, .index = xindex, \
1224   .info = snd_es1938_info_double, \
1225   .get = snd_es1938_get_double, .put = snd_es1938_put_double, \
1226   .private_value = left_reg | (right_reg << 8) | (shift_left << 16) | (shift_right << 19) | (mask << 24) | (invert << 22), \
1227   .tlv = { .p = xtlv } }
1228 #define ES1938_DOUBLE(xname, xindex, left_reg, right_reg, shift_left, shift_right, mask, invert) \
1229 { .iface = SNDRV_CTL_ELEM_IFACE_MIXER, .name = xname, .index = xindex, \
1230   .info = snd_es1938_info_double, \
1231   .get = snd_es1938_get_double, .put = snd_es1938_put_double, \
1232   .private_value = left_reg | (right_reg << 8) | (shift_left << 16) | (shift_right << 19) | (mask << 24) | (invert << 22) }
1233 
1234 static int snd_es1938_info_double(struct snd_kcontrol *kcontrol,
1235                                   struct snd_ctl_elem_info *uinfo)
1236 {
1237         int mask = (kcontrol->private_value >> 24) & 0xff;
1238 
1239         uinfo->type = mask == 1 ? SNDRV_CTL_ELEM_TYPE_BOOLEAN : SNDRV_CTL_ELEM_TYPE_INTEGER;
1240         uinfo->count = 2;
1241         uinfo->value.integer.min = 0;
1242         uinfo->value.integer.max = mask;
1243         return 0;
1244 }
1245 
1246 static int snd_es1938_get_double(struct snd_kcontrol *kcontrol,
1247                                  struct snd_ctl_elem_value *ucontrol)
1248 {
1249         struct es1938 *chip = snd_kcontrol_chip(kcontrol);
1250         int left_reg = kcontrol->private_value & 0xff;
1251         int right_reg = (kcontrol->private_value >> 8) & 0xff;
1252         int shift_left = (kcontrol->private_value >> 16) & 0x07;
1253         int shift_right = (kcontrol->private_value >> 19) & 0x07;
1254         int mask = (kcontrol->private_value >> 24) & 0xff;
1255         int invert = (kcontrol->private_value >> 22) & 1;
1256         unsigned char left, right;
1257         
1258         left = snd_es1938_reg_read(chip, left_reg);
1259         if (left_reg != right_reg)
1260                 right = snd_es1938_reg_read(chip, right_reg);
1261         else
1262                 right = left;
1263         ucontrol->value.integer.value[0] = (left >> shift_left) & mask;
1264         ucontrol->value.integer.value[1] = (right >> shift_right) & mask;
1265         if (invert) {
1266                 ucontrol->value.integer.value[0] = mask - ucontrol->value.integer.value[0];
1267                 ucontrol->value.integer.value[1] = mask - ucontrol->value.integer.value[1];
1268         }
1269         return 0;
1270 }
1271 
1272 static int snd_es1938_put_double(struct snd_kcontrol *kcontrol,
1273                                  struct snd_ctl_elem_value *ucontrol)
1274 {
1275         struct es1938 *chip = snd_kcontrol_chip(kcontrol);
1276         int left_reg = kcontrol->private_value & 0xff;
1277         int right_reg = (kcontrol->private_value >> 8) & 0xff;
1278         int shift_left = (kcontrol->private_value >> 16) & 0x07;
1279         int shift_right = (kcontrol->private_value >> 19) & 0x07;
1280         int mask = (kcontrol->private_value >> 24) & 0xff;
1281         int invert = (kcontrol->private_value >> 22) & 1;
1282         int change;
1283         unsigned char val1, val2, mask1, mask2;
1284         
1285         val1 = ucontrol->value.integer.value[0] & mask;
1286         val2 = ucontrol->value.integer.value[1] & mask;
1287         if (invert) {
1288                 val1 = mask - val1;
1289                 val2 = mask - val2;
1290         }
1291         val1 <<= shift_left;
1292         val2 <<= shift_right;
1293         mask1 = mask << shift_left;
1294         mask2 = mask << shift_right;
1295         if (left_reg != right_reg) {
1296                 change = 0;
1297                 if (snd_es1938_reg_bits(chip, left_reg, mask1, val1) != val1)
1298                         change = 1;
1299                 if (snd_es1938_reg_bits(chip, right_reg, mask2, val2) != val2)
1300                         change = 1;
1301         } else {
1302                 change = (snd_es1938_reg_bits(chip, left_reg, mask1 | mask2, 
1303                                               val1 | val2) != (val1 | val2));
1304         }
1305         return change;
1306 }
1307 
1308 static const DECLARE_TLV_DB_RANGE(db_scale_master,
1309         0, 54, TLV_DB_SCALE_ITEM(-3600, 50, 1),
1310         54, 63, TLV_DB_SCALE_ITEM(-900, 100, 0),
1311 );
1312 
1313 static const DECLARE_TLV_DB_RANGE(db_scale_audio1,
1314         0, 8, TLV_DB_SCALE_ITEM(-3300, 300, 1),
1315         8, 15, TLV_DB_SCALE_ITEM(-900, 150, 0),
1316 );
1317 
1318 static const DECLARE_TLV_DB_RANGE(db_scale_audio2,
1319         0, 8, TLV_DB_SCALE_ITEM(-3450, 300, 1),
1320         8, 15, TLV_DB_SCALE_ITEM(-1050, 150, 0),
1321 );
1322 
1323 static const DECLARE_TLV_DB_RANGE(db_scale_mic,
1324         0, 8, TLV_DB_SCALE_ITEM(-2400, 300, 1),
1325         8, 15, TLV_DB_SCALE_ITEM(0, 150, 0),
1326 );
1327 
1328 static const DECLARE_TLV_DB_RANGE(db_scale_line,
1329         0, 8, TLV_DB_SCALE_ITEM(-3150, 300, 1),
1330         8, 15, TLV_DB_SCALE_ITEM(-750, 150, 0),
1331 );
1332 
1333 static const DECLARE_TLV_DB_SCALE(db_scale_capture, 0, 150, 0);
1334 
1335 static struct snd_kcontrol_new snd_es1938_controls[] = {
1336 ES1938_DOUBLE_TLV("Master Playback Volume", 0, 0x60, 0x62, 0, 0, 63, 0,
1337                   db_scale_master),
1338 ES1938_DOUBLE("Master Playback Switch", 0, 0x60, 0x62, 6, 6, 1, 1),
1339 {
1340         .iface = SNDRV_CTL_ELEM_IFACE_MIXER,
1341         .name = "Hardware Master Playback Volume",
1342         .access = SNDRV_CTL_ELEM_ACCESS_READ,
1343         .info = snd_es1938_info_hw_volume,
1344         .get = snd_es1938_get_hw_volume,
1345 },
1346 {
1347         .iface = SNDRV_CTL_ELEM_IFACE_MIXER,
1348         .access = (SNDRV_CTL_ELEM_ACCESS_READ |
1349                    SNDRV_CTL_ELEM_ACCESS_TLV_READ),
1350         .name = "Hardware Master Playback Switch",
1351         .info = snd_es1938_info_hw_switch,
1352         .get = snd_es1938_get_hw_switch,
1353         .tlv = { .p = db_scale_master },
1354 },
1355 ES1938_SINGLE("Hardware Volume Split", 0, 0x64, 7, 1, 0),
1356 ES1938_DOUBLE_TLV("Line Playback Volume", 0, 0x3e, 0x3e, 4, 0, 15, 0,
1357                   db_scale_line),
1358 ES1938_DOUBLE("CD Playback Volume", 0, 0x38, 0x38, 4, 0, 15, 0),
1359 ES1938_DOUBLE_TLV("FM Playback Volume", 0, 0x36, 0x36, 4, 0, 15, 0,
1360                   db_scale_mic),
1361 ES1938_DOUBLE_TLV("Mono Playback Volume", 0, 0x6d, 0x6d, 4, 0, 15, 0,
1362                   db_scale_line),
1363 ES1938_DOUBLE_TLV("Mic Playback Volume", 0, 0x1a, 0x1a, 4, 0, 15, 0,
1364                   db_scale_mic),
1365 ES1938_DOUBLE_TLV("Aux Playback Volume", 0, 0x3a, 0x3a, 4, 0, 15, 0,
1366                   db_scale_line),
1367 ES1938_DOUBLE_TLV("Capture Volume", 0, 0xb4, 0xb4, 4, 0, 15, 0,
1368                   db_scale_capture),
1369 ES1938_SINGLE("Beep Volume", 0, 0x3c, 0, 7, 0),
1370 ES1938_SINGLE("Record Monitor", 0, 0xa8, 3, 1, 0),
1371 ES1938_SINGLE("Capture Switch", 0, 0x1c, 4, 1, 1),
1372 {
1373         .iface = SNDRV_CTL_ELEM_IFACE_MIXER,
1374         .name = "Capture Source",
1375         .info = snd_es1938_info_mux,
1376         .get = snd_es1938_get_mux,
1377         .put = snd_es1938_put_mux,
1378 },
1379 ES1938_DOUBLE_TLV("Mono Input Playback Volume", 0, 0x6d, 0x6d, 4, 0, 15, 0,
1380                   db_scale_line),
1381 ES1938_DOUBLE_TLV("PCM Capture Volume", 0, 0x69, 0x69, 4, 0, 15, 0,
1382                   db_scale_audio2),
1383 ES1938_DOUBLE_TLV("Mic Capture Volume", 0, 0x68, 0x68, 4, 0, 15, 0,
1384                   db_scale_mic),
1385 ES1938_DOUBLE_TLV("Line Capture Volume", 0, 0x6e, 0x6e, 4, 0, 15, 0,
1386                   db_scale_line),
1387 ES1938_DOUBLE_TLV("FM Capture Volume", 0, 0x6b, 0x6b, 4, 0, 15, 0,
1388                   db_scale_mic),
1389 ES1938_DOUBLE_TLV("Mono Capture Volume", 0, 0x6f, 0x6f, 4, 0, 15, 0,
1390                   db_scale_line),
1391 ES1938_DOUBLE_TLV("CD Capture Volume", 0, 0x6a, 0x6a, 4, 0, 15, 0,
1392                   db_scale_line),
1393 ES1938_DOUBLE_TLV("Aux Capture Volume", 0, 0x6c, 0x6c, 4, 0, 15, 0,
1394                   db_scale_line),
1395 ES1938_DOUBLE_TLV("PCM Playback Volume", 0, 0x7c, 0x7c, 4, 0, 15, 0,
1396                   db_scale_audio2),
1397 ES1938_DOUBLE_TLV("PCM Playback Volume", 1, 0x14, 0x14, 4, 0, 15, 0,
1398                   db_scale_audio1),
1399 ES1938_SINGLE("3D Control - Level", 0, 0x52, 0, 63, 0),
1400 {
1401         .iface = SNDRV_CTL_ELEM_IFACE_MIXER,
1402         .name = "3D Control - Switch",
1403         .info = snd_es1938_info_spatializer_enable,
1404         .get = snd_es1938_get_spatializer_enable,
1405         .put = snd_es1938_put_spatializer_enable,
1406 },
1407 ES1938_SINGLE("Mic Boost (+26dB)", 0, 0x7d, 3, 1, 0)
1408 };
1409 
1410 
1411 /* ---------------------------------------------------------------------------- */
1412 /* ---------------------------------------------------------------------------- */
1413 
1414 /*
1415  * initialize the chip - used by resume callback, too
1416  */
1417 static void snd_es1938_chip_init(struct es1938 *chip)
1418 {
1419         /* reset chip */
1420         snd_es1938_reset(chip);
1421 
1422         /* configure native mode */
1423 
1424         /* enable bus master */
1425         pci_set_master(chip->pci);
1426 
1427         /* disable legacy audio */
1428         pci_write_config_word(chip->pci, SL_PCI_LEGACYCONTROL, 0x805f);
1429 
1430         /* set DDMA base */
1431         pci_write_config_word(chip->pci, SL_PCI_DDMACONTROL, chip->ddma_port | 1);
1432 
1433         /* set DMA/IRQ policy */
1434         pci_write_config_dword(chip->pci, SL_PCI_CONFIG, 0);
1435 
1436         /* enable Audio 1, Audio 2, MPU401 IRQ and HW volume IRQ*/
1437         outb(0xf0, SLIO_REG(chip, IRQCONTROL));
1438 
1439         /* reset DMA */
1440         outb(0, SLDM_REG(chip, DMACLEAR));
1441 }
1442 
1443 #ifdef CONFIG_PM_SLEEP
1444 /*
1445  * PM support
1446  */
1447 
1448 static unsigned char saved_regs[SAVED_REG_SIZE+1] = {
1449         0x14, 0x1a, 0x1c, 0x3a, 0x3c, 0x3e, 0x36, 0x38,
1450         0x50, 0x52, 0x60, 0x61, 0x62, 0x63, 0x64, 0x68,
1451         0x69, 0x6a, 0x6b, 0x6d, 0x6e, 0x6f, 0x7c, 0x7d,
1452         0xa8, 0xb4,
1453 };
1454 
1455 
1456 static int es1938_suspend(struct device *dev)
1457 {
1458         struct snd_card *card = dev_get_drvdata(dev);
1459         struct es1938 *chip = card->private_data;
1460         unsigned char *s, *d;
1461 
1462         snd_power_change_state(card, SNDRV_CTL_POWER_D3hot);
1463 
1464         /* save mixer-related registers */
1465         for (s = saved_regs, d = chip->saved_regs; *s; s++, d++)
1466                 *d = snd_es1938_reg_read(chip, *s);
1467 
1468         outb(0x00, SLIO_REG(chip, IRQCONTROL)); /* disable irqs */
1469         if (chip->irq >= 0) {
1470                 free_irq(chip->irq, chip);
1471                 chip->irq = -1;
1472         }
1473         return 0;
1474 }
1475 
1476 static int es1938_resume(struct device *dev)
1477 {
1478         struct pci_dev *pci = to_pci_dev(dev);
1479         struct snd_card *card = dev_get_drvdata(dev);
1480         struct es1938 *chip = card->private_data;
1481         unsigned char *s, *d;
1482 
1483         if (request_irq(pci->irq, snd_es1938_interrupt,
1484                         IRQF_SHARED, KBUILD_MODNAME, chip)) {
1485                 dev_err(dev, "unable to grab IRQ %d, disabling device\n",
1486                         pci->irq);
1487                 snd_card_disconnect(card);
1488                 return -EIO;
1489         }
1490         chip->irq = pci->irq;
1491         snd_es1938_chip_init(chip);
1492 
1493         /* restore mixer-related registers */
1494         for (s = saved_regs, d = chip->saved_regs; *s; s++, d++) {
1495                 if (*s < 0xa0)
1496                         snd_es1938_mixer_write(chip, *s, *d);
1497                 else
1498                         snd_es1938_write(chip, *s, *d);
1499         }
1500 
1501         snd_power_change_state(card, SNDRV_CTL_POWER_D0);
1502         return 0;
1503 }
1504 
1505 static SIMPLE_DEV_PM_OPS(es1938_pm, es1938_suspend, es1938_resume);
1506 #define ES1938_PM_OPS   &es1938_pm
1507 #else
1508 #define ES1938_PM_OPS   NULL
1509 #endif /* CONFIG_PM_SLEEP */
1510 
1511 #ifdef SUPPORT_JOYSTICK
1512 static int snd_es1938_create_gameport(struct es1938 *chip)
1513 {
1514         struct gameport *gp;
1515 
1516         chip->gameport = gp = gameport_allocate_port();
1517         if (!gp) {
1518                 dev_err(chip->card->dev,
1519                         "cannot allocate memory for gameport\n");
1520                 return -ENOMEM;
1521         }
1522 
1523         gameport_set_name(gp, "ES1938");
1524         gameport_set_phys(gp, "pci%s/gameport0", pci_name(chip->pci));
1525         gameport_set_dev_parent(gp, &chip->pci->dev);
1526         gp->io = chip->game_port;
1527 
1528         gameport_register_port(gp);
1529 
1530         return 0;
1531 }
1532 
1533 static void snd_es1938_free_gameport(struct es1938 *chip)
1534 {
1535         if (chip->gameport) {
1536                 gameport_unregister_port(chip->gameport);
1537                 chip->gameport = NULL;
1538         }
1539 }
1540 #else
1541 static inline int snd_es1938_create_gameport(struct es1938 *chip) { return -ENOSYS; }
1542 static inline void snd_es1938_free_gameport(struct es1938 *chip) { }
1543 #endif /* SUPPORT_JOYSTICK */
1544 
1545 static int snd_es1938_free(struct es1938 *chip)
1546 {
1547         /* disable irqs */
1548         outb(0x00, SLIO_REG(chip, IRQCONTROL));
1549         if (chip->rmidi)
1550                 snd_es1938_mixer_bits(chip, ESSSB_IREG_MPU401CONTROL, 0x40, 0);
1551 
1552         snd_es1938_free_gameport(chip);
1553 
1554         if (chip->irq >= 0)
1555                 free_irq(chip->irq, chip);
1556         pci_release_regions(chip->pci);
1557         pci_disable_device(chip->pci);
1558         kfree(chip);
1559         return 0;
1560 }
1561 
1562 static int snd_es1938_dev_free(struct snd_device *device)
1563 {
1564         struct es1938 *chip = device->device_data;
1565         return snd_es1938_free(chip);
1566 }
1567 
1568 static int snd_es1938_create(struct snd_card *card,
1569                              struct pci_dev *pci,
1570                              struct es1938 **rchip)
1571 {
1572         struct es1938 *chip;
1573         int err;
1574         static struct snd_device_ops ops = {
1575                 .dev_free =     snd_es1938_dev_free,
1576         };
1577 
1578         *rchip = NULL;
1579 
1580         /* enable PCI device */
1581         if ((err = pci_enable_device(pci)) < 0)
1582                 return err;
1583         /* check, if we can restrict PCI DMA transfers to 24 bits */
1584         if (dma_set_mask(&pci->dev, DMA_BIT_MASK(24)) < 0 ||
1585             dma_set_coherent_mask(&pci->dev, DMA_BIT_MASK(24)) < 0) {
1586                 dev_err(card->dev,
1587                         "architecture does not support 24bit PCI busmaster DMA\n");
1588                 pci_disable_device(pci);
1589                 return -ENXIO;
1590         }
1591 
1592         chip = kzalloc(sizeof(*chip), GFP_KERNEL);
1593         if (chip == NULL) {
1594                 pci_disable_device(pci);
1595                 return -ENOMEM;
1596         }
1597         spin_lock_init(&chip->reg_lock);
1598         spin_lock_init(&chip->mixer_lock);
1599         chip->card = card;
1600         chip->pci = pci;
1601         chip->irq = -1;
1602         if ((err = pci_request_regions(pci, "ESS Solo-1")) < 0) {
1603                 kfree(chip);
1604                 pci_disable_device(pci);
1605                 return err;
1606         }
1607         chip->io_port = pci_resource_start(pci, 0);
1608         chip->sb_port = pci_resource_start(pci, 1);
1609         chip->vc_port = pci_resource_start(pci, 2);
1610         chip->mpu_port = pci_resource_start(pci, 3);
1611         chip->game_port = pci_resource_start(pci, 4);
1612         if (request_irq(pci->irq, snd_es1938_interrupt, IRQF_SHARED,
1613                         KBUILD_MODNAME, chip)) {
1614                 dev_err(card->dev, "unable to grab IRQ %d\n", pci->irq);
1615                 snd_es1938_free(chip);
1616                 return -EBUSY;
1617         }
1618         chip->irq = pci->irq;
1619         dev_dbg(card->dev,
1620                 "create: io: 0x%lx, sb: 0x%lx, vc: 0x%lx, mpu: 0x%lx, game: 0x%lx\n",
1621                    chip->io_port, chip->sb_port, chip->vc_port, chip->mpu_port, chip->game_port);
1622 
1623         chip->ddma_port = chip->vc_port + 0x00;         /* fix from Thomas Sailer */
1624 
1625         snd_es1938_chip_init(chip);
1626 
1627         if ((err = snd_device_new(card, SNDRV_DEV_LOWLEVEL, chip, &ops)) < 0) {
1628                 snd_es1938_free(chip);
1629                 return err;
1630         }
1631 
1632         *rchip = chip;
1633         return 0;
1634 }
1635 
1636 /* --------------------------------------------------------------------
1637  * Interrupt handler
1638  * -------------------------------------------------------------------- */
1639 static irqreturn_t snd_es1938_interrupt(int irq, void *dev_id)
1640 {
1641         struct es1938 *chip = dev_id;
1642         unsigned char status, audiostatus;
1643         int handled = 0;
1644 
1645         status = inb(SLIO_REG(chip, IRQCONTROL));
1646 #if 0
1647         dev_dbg(chip->card->dev,
1648                 "Es1938debug - interrupt status: =0x%x\n", status);
1649 #endif
1650         
1651         /* AUDIO 1 */
1652         if (status & 0x10) {
1653 #if 0
1654                 dev_dbg(chip->card->dev,
1655                        "Es1938debug - AUDIO channel 1 interrupt\n");
1656                 dev_dbg(chip->card->dev,
1657                        "Es1938debug - AUDIO channel 1 DMAC DMA count: %u\n",
1658                        inw(SLDM_REG(chip, DMACOUNT)));
1659                 dev_dbg(chip->card->dev,
1660                        "Es1938debug - AUDIO channel 1 DMAC DMA base: %u\n",
1661                        inl(SLDM_REG(chip, DMAADDR)));
1662                 dev_dbg(chip->card->dev,
1663                        "Es1938debug - AUDIO channel 1 DMAC DMA status: 0x%x\n",
1664                        inl(SLDM_REG(chip, DMASTATUS)));
1665 #endif
1666                 /* clear irq */
1667                 handled = 1;
1668                 audiostatus = inb(SLSB_REG(chip, STATUS));
1669                 if (chip->active & ADC1)
1670                         snd_pcm_period_elapsed(chip->capture_substream);
1671                 else if (chip->active & DAC1)
1672                         snd_pcm_period_elapsed(chip->playback2_substream);
1673         }
1674         
1675         /* AUDIO 2 */
1676         if (status & 0x20) {
1677 #if 0
1678                 dev_dbg(chip->card->dev,
1679                        "Es1938debug - AUDIO channel 2 interrupt\n");
1680                 dev_dbg(chip->card->dev,
1681                        "Es1938debug - AUDIO channel 2 DMAC DMA count: %u\n",
1682                        inw(SLIO_REG(chip, AUDIO2DMACOUNT)));
1683                 dev_dbg(chip->card->dev,
1684                        "Es1938debug - AUDIO channel 2 DMAC DMA base: %u\n",
1685                        inl(SLIO_REG(chip, AUDIO2DMAADDR)));
1686 
1687 #endif
1688                 /* clear irq */
1689                 handled = 1;
1690                 snd_es1938_mixer_bits(chip, ESSSB_IREG_AUDIO2CONTROL2, 0x80, 0);
1691                 if (chip->active & DAC2)
1692                         snd_pcm_period_elapsed(chip->playback1_substream);
1693         }
1694 
1695         /* Hardware volume */
1696         if (status & 0x40) {
1697                 int split = snd_es1938_mixer_read(chip, 0x64) & 0x80;
1698                 handled = 1;
1699                 snd_ctl_notify(chip->card, SNDRV_CTL_EVENT_MASK_VALUE, &chip->hw_switch->id);
1700                 snd_ctl_notify(chip->card, SNDRV_CTL_EVENT_MASK_VALUE, &chip->hw_volume->id);
1701                 if (!split) {
1702                         snd_ctl_notify(chip->card, SNDRV_CTL_EVENT_MASK_VALUE,
1703                                        &chip->master_switch->id);
1704                         snd_ctl_notify(chip->card, SNDRV_CTL_EVENT_MASK_VALUE,
1705                                        &chip->master_volume->id);
1706                 }
1707                 /* ack interrupt */
1708                 snd_es1938_mixer_write(chip, 0x66, 0x00);
1709         }
1710 
1711         /* MPU401 */
1712         if (status & 0x80) {
1713                 // the following line is evil! It switches off MIDI interrupt handling after the first interrupt received.
1714                 // replacing the last 0 by 0x40 works for ESS-Solo1, but just doing nothing works as well!
1715                 // andreas@flying-snail.de
1716                 // snd_es1938_mixer_bits(chip, ESSSB_IREG_MPU401CONTROL, 0x40, 0); /* ack? */
1717                 if (chip->rmidi) {
1718                         handled = 1;
1719                         snd_mpu401_uart_interrupt(irq, chip->rmidi->private_data);
1720                 }
1721         }
1722         return IRQ_RETVAL(handled);
1723 }
1724 
1725 #define ES1938_DMA_SIZE 64
1726 
1727 static int snd_es1938_mixer(struct es1938 *chip)
1728 {
1729         struct snd_card *card;
1730         unsigned int idx;
1731         int err;
1732 
1733         card = chip->card;
1734 
1735         strcpy(card->mixername, "ESS Solo-1");
1736 
1737         for (idx = 0; idx < ARRAY_SIZE(snd_es1938_controls); idx++) {
1738                 struct snd_kcontrol *kctl;
1739                 kctl = snd_ctl_new1(&snd_es1938_controls[idx], chip);
1740                 switch (idx) {
1741                         case 0:
1742                                 chip->master_volume = kctl;
1743                                 kctl->private_free = snd_es1938_hwv_free;
1744                                 break;
1745                         case 1:
1746                                 chip->master_switch = kctl;
1747                                 kctl->private_free = snd_es1938_hwv_free;
1748                                 break;
1749                         case 2:
1750                                 chip->hw_volume = kctl;
1751                                 kctl->private_free = snd_es1938_hwv_free;
1752                                 break;
1753                         case 3:
1754                                 chip->hw_switch = kctl;
1755                                 kctl->private_free = snd_es1938_hwv_free;
1756                                 break;
1757                         }
1758                 if ((err = snd_ctl_add(card, kctl)) < 0)
1759                         return err;
1760         }
1761         return 0;
1762 }
1763        
1764 
1765 static int snd_es1938_probe(struct pci_dev *pci,
1766                             const struct pci_device_id *pci_id)
1767 {
1768         static int dev;
1769         struct snd_card *card;
1770         struct es1938 *chip;
1771         struct snd_opl3 *opl3;
1772         int idx, err;
1773 
1774         if (dev >= SNDRV_CARDS)
1775                 return -ENODEV;
1776         if (!enable[dev]) {
1777                 dev++;
1778                 return -ENOENT;
1779         }
1780 
1781         err = snd_card_new(&pci->dev, index[dev], id[dev], THIS_MODULE,
1782                            0, &card);
1783         if (err < 0)
1784                 return err;
1785         for (idx = 0; idx < 5; idx++) {
1786                 if (pci_resource_start(pci, idx) == 0 ||
1787                     !(pci_resource_flags(pci, idx) & IORESOURCE_IO)) {
1788                         snd_card_free(card);
1789                         return -ENODEV;
1790                 }
1791         }
1792         if ((err = snd_es1938_create(card, pci, &chip)) < 0) {
1793                 snd_card_free(card);
1794                 return err;
1795         }
1796         card->private_data = chip;
1797 
1798         strcpy(card->driver, "ES1938");
1799         strcpy(card->shortname, "ESS ES1938 (Solo-1)");
1800         sprintf(card->longname, "%s rev %i, irq %i",
1801                 card->shortname,
1802                 chip->revision,
1803                 chip->irq);
1804 
1805         if ((err = snd_es1938_new_pcm(chip, 0)) < 0) {
1806                 snd_card_free(card);
1807                 return err;
1808         }
1809         if ((err = snd_es1938_mixer(chip)) < 0) {
1810                 snd_card_free(card);
1811                 return err;
1812         }
1813         if (snd_opl3_create(card,
1814                             SLSB_REG(chip, FMLOWADDR),
1815                             SLSB_REG(chip, FMHIGHADDR),
1816                             OPL3_HW_OPL3, 1, &opl3) < 0) {
1817                 dev_err(card->dev, "OPL3 not detected at 0x%lx\n",
1818                            SLSB_REG(chip, FMLOWADDR));
1819         } else {
1820                 if ((err = snd_opl3_timer_new(opl3, 0, 1)) < 0) {
1821                         snd_card_free(card);
1822                         return err;
1823                 }
1824                 if ((err = snd_opl3_hwdep_new(opl3, 0, 1, NULL)) < 0) {
1825                         snd_card_free(card);
1826                         return err;
1827                 }
1828         }
1829         if (snd_mpu401_uart_new(card, 0, MPU401_HW_MPU401,
1830                                 chip->mpu_port,
1831                                 MPU401_INFO_INTEGRATED | MPU401_INFO_IRQ_HOOK,
1832                                 -1, &chip->rmidi) < 0) {
1833                 dev_err(card->dev, "unable to initialize MPU-401\n");
1834         } else {
1835                 // this line is vital for MIDI interrupt handling on ess-solo1
1836                 // andreas@flying-snail.de
1837                 snd_es1938_mixer_bits(chip, ESSSB_IREG_MPU401CONTROL, 0x40, 0x40);
1838         }
1839 
1840         snd_es1938_create_gameport(chip);
1841 
1842         if ((err = snd_card_register(card)) < 0) {
1843                 snd_card_free(card);
1844                 return err;
1845         }
1846 
1847         pci_set_drvdata(pci, card);
1848         dev++;
1849         return 0;
1850 }
1851 
1852 static void snd_es1938_remove(struct pci_dev *pci)
1853 {
1854         snd_card_free(pci_get_drvdata(pci));
1855 }
1856 
1857 static struct pci_driver es1938_driver = {
1858         .name = KBUILD_MODNAME,
1859         .id_table = snd_es1938_ids,
1860         .probe = snd_es1938_probe,
1861         .remove = snd_es1938_remove,
1862         .driver = {
1863                 .pm = ES1938_PM_OPS,
1864         },
1865 };
1866 
1867 module_pci_driver(es1938_driver);
1868 

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