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Linux/sound/pci/als4000.c

  1 /*
  2  *  card-als4000.c - driver for Avance Logic ALS4000 based soundcards.
  3  *  Copyright (C) 2000 by Bart Hartgers <bart@etpmod.phys.tue.nl>,
  4  *                        Jaroslav Kysela <perex@perex.cz>
  5  *  Copyright (C) 2002, 2008 by Andreas Mohr <hw7oshyuv3001@sneakemail.com>
  6  *
  7  *  Framework borrowed from Massimo Piccioni's card-als100.c.
  8  *
  9  *
 10  *  This program is free software; you can redistribute it and/or modify
 11  *  it under the terms of the GNU General Public License as published by
 12  *  the Free Software Foundation; either version 2 of the License, or
 13  *  (at your option) any later version.
 14  *
 15  *  This program is distributed in the hope that it will be useful,
 16  *  but WITHOUT ANY WARRANTY; without even the implied warranty of
 17  *  MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
 18  *  GNU General Public License for more details.
 19 
 20  *  You should have received a copy of the GNU General Public License
 21  *  along with this program; if not, write to the Free Software
 22  *  Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA  02111-1307 USA
 23  *
 24  * NOTES
 25  *
 26  *  Since Avance does not provide any meaningful documentation, and I
 27  *  bought an ALS4000 based soundcard, I was forced to base this driver
 28  *  on reverse engineering.
 29  *
 30  *  Note: this is no longer true (thank you!):
 31  *  pretty verbose chip docu (ALS4000a.PDF) can be found on the ALSA web site.
 32  *  Page numbers stated anywhere below with the "SPECS_PAGE:" tag
 33  *  refer to: ALS4000a.PDF specs Ver 1.0, May 28th, 1998.
 34  *
 35  *  The ALS4000 seems to be the PCI-cousin of the ALS100. It contains an
 36  *  ALS100-like SB DSP/mixer, an OPL3 synth, a MPU401 and a gameport 
 37  *  interface. These subsystems can be mapped into ISA io-port space, 
 38  *  using the PCI-interface. In addition, the PCI-bit provides DMA and IRQ 
 39  *  services to the subsystems.
 40  * 
 41  * While ALS4000 is very similar to a SoundBlaster, the differences in
 42  * DMA and capturing require more changes to the SoundBlaster than
 43  * desirable, so I made this separate driver.
 44  * 
 45  * The ALS4000 can do real full duplex playback/capture.
 46  *
 47  * FMDAC:
 48  * - 0x4f -> port 0x14
 49  * - port 0x15 |= 1
 50  *
 51  * Enable/disable 3D sound:
 52  * - 0x50 -> port 0x14
 53  * - change bit 6 (0x40) of port 0x15
 54  *
 55  * Set QSound:
 56  * - 0xdb -> port 0x14
 57  * - set port 0x15:
 58  *   0x3e (mode 3), 0x3c (mode 2), 0x3a (mode 1), 0x38 (mode 0)
 59  *
 60  * Set KSound:
 61  * - value -> some port 0x0c0d
 62  *
 63  * ToDo:
 64  * - by default, don't enable legacy game and use PCI game I/O
 65  * - power management? (card can do voice wakeup according to datasheet!!)
 66  */
 67 
 68 #include <asm/io.h>
 69 #include <linux/init.h>
 70 #include <linux/pci.h>
 71 #include <linux/gameport.h>
 72 #include <linux/module.h>
 73 #include <linux/dma-mapping.h>
 74 #include <sound/core.h>
 75 #include <sound/pcm.h>
 76 #include <sound/rawmidi.h>
 77 #include <sound/mpu401.h>
 78 #include <sound/opl3.h>
 79 #include <sound/sb.h>
 80 #include <sound/initval.h>
 81 
 82 MODULE_AUTHOR("Bart Hartgers <bart@etpmod.phys.tue.nl>, Andreas Mohr");
 83 MODULE_DESCRIPTION("Avance Logic ALS4000");
 84 MODULE_LICENSE("GPL");
 85 MODULE_SUPPORTED_DEVICE("{{Avance Logic,ALS4000}}");
 86 
 87 #if defined(CONFIG_GAMEPORT) || (defined(MODULE) && defined(CONFIG_GAMEPORT_MODULE))
 88 #define SUPPORT_JOYSTICK 1
 89 #endif
 90 
 91 static int index[SNDRV_CARDS] = SNDRV_DEFAULT_IDX;      /* Index 0-MAX */
 92 static char *id[SNDRV_CARDS] = SNDRV_DEFAULT_STR;       /* ID for this card */
 93 static bool enable[SNDRV_CARDS] = SNDRV_DEFAULT_ENABLE_PNP;     /* Enable this card */
 94 #ifdef SUPPORT_JOYSTICK
 95 static int joystick_port[SNDRV_CARDS];
 96 #endif
 97 
 98 module_param_array(index, int, NULL, 0444);
 99 MODULE_PARM_DESC(index, "Index value for ALS4000 soundcard.");
100 module_param_array(id, charp, NULL, 0444);
101 MODULE_PARM_DESC(id, "ID string for ALS4000 soundcard.");
102 module_param_array(enable, bool, NULL, 0444);
103 MODULE_PARM_DESC(enable, "Enable ALS4000 soundcard.");
104 #ifdef SUPPORT_JOYSTICK
105 module_param_array(joystick_port, int, NULL, 0444);
106 MODULE_PARM_DESC(joystick_port, "Joystick port address for ALS4000 soundcard. (0 = disabled)");
107 #endif
108 
109 struct snd_card_als4000 {
110         /* most frequent access first */
111         unsigned long iobase;
112         struct pci_dev *pci;
113         struct snd_sb *chip;
114 #ifdef SUPPORT_JOYSTICK
115         struct gameport *gameport;
116 #endif
117 };
118 
119 static const struct pci_device_id snd_als4000_ids[] = {
120         { 0x4005, 0x4000, PCI_ANY_ID, PCI_ANY_ID, 0, 0, 0, },   /* ALS4000 */
121         { 0, }
122 };
123 
124 MODULE_DEVICE_TABLE(pci, snd_als4000_ids);
125 
126 enum als4k_iobase_t {
127         /* IOx: B == Byte, W = Word, D = DWord; SPECS_PAGE: 37 */
128         ALS4K_IOD_00_AC97_ACCESS = 0x00,
129         ALS4K_IOW_04_AC97_READ = 0x04,
130         ALS4K_IOB_06_AC97_STATUS = 0x06,
131         ALS4K_IOB_07_IRQSTATUS = 0x07,
132         ALS4K_IOD_08_GCR_DATA = 0x08,
133         ALS4K_IOB_0C_GCR_INDEX = 0x0c,
134         ALS4K_IOB_0E_IRQTYPE_SB_CR1E_MPU = 0x0e,
135         ALS4K_IOB_10_ADLIB_ADDR0 = 0x10,
136         ALS4K_IOB_11_ADLIB_ADDR1 = 0x11,
137         ALS4K_IOB_12_ADLIB_ADDR2 = 0x12,
138         ALS4K_IOB_13_ADLIB_ADDR3 = 0x13,
139         ALS4K_IOB_14_MIXER_INDEX = 0x14,
140         ALS4K_IOB_15_MIXER_DATA = 0x15,
141         ALS4K_IOB_16_ESP_RESET = 0x16,
142         ALS4K_IOB_16_ACK_FOR_CR1E = 0x16, /* 2nd function */
143         ALS4K_IOB_18_OPL_ADDR0 = 0x18,
144         ALS4K_IOB_19_OPL_ADDR1 = 0x19,
145         ALS4K_IOB_1A_ESP_RD_DATA = 0x1a,
146         ALS4K_IOB_1C_ESP_CMD_DATA = 0x1c,
147         ALS4K_IOB_1C_ESP_WR_STATUS = 0x1c, /* 2nd function */
148         ALS4K_IOB_1E_ESP_RD_STATUS8 = 0x1e,
149         ALS4K_IOB_1F_ESP_RD_STATUS16 = 0x1f,
150         ALS4K_IOB_20_ESP_GAMEPORT_200 = 0x20,
151         ALS4K_IOB_21_ESP_GAMEPORT_201 = 0x21,
152         ALS4K_IOB_30_MIDI_DATA = 0x30,
153         ALS4K_IOB_31_MIDI_STATUS = 0x31,
154         ALS4K_IOB_31_MIDI_COMMAND = 0x31, /* 2nd function */
155 };
156 
157 enum als4k_iobase_0e_t {
158         ALS4K_IOB_0E_MPU_IRQ = 0x10,
159         ALS4K_IOB_0E_CR1E_IRQ = 0x40,
160         ALS4K_IOB_0E_SB_DMA_IRQ = 0x80,
161 };
162 
163 enum als4k_gcr_t { /* all registers 32bit wide; SPECS_PAGE: 38 to 42 */
164         ALS4K_GCR8C_MISC_CTRL = 0x8c,
165         ALS4K_GCR90_TEST_MODE_REG = 0x90,
166         ALS4K_GCR91_DMA0_ADDR = 0x91,
167         ALS4K_GCR92_DMA0_MODE_COUNT = 0x92,
168         ALS4K_GCR93_DMA1_ADDR = 0x93,
169         ALS4K_GCR94_DMA1_MODE_COUNT = 0x94,
170         ALS4K_GCR95_DMA3_ADDR = 0x95,
171         ALS4K_GCR96_DMA3_MODE_COUNT = 0x96,
172         ALS4K_GCR99_DMA_EMULATION_CTRL = 0x99,
173         ALS4K_GCRA0_FIFO1_CURRENT_ADDR = 0xa0,
174         ALS4K_GCRA1_FIFO1_STATUS_BYTECOUNT = 0xa1,
175         ALS4K_GCRA2_FIFO2_PCIADDR = 0xa2,
176         ALS4K_GCRA3_FIFO2_COUNT = 0xa3,
177         ALS4K_GCRA4_FIFO2_CURRENT_ADDR = 0xa4,
178         ALS4K_GCRA5_FIFO1_STATUS_BYTECOUNT = 0xa5,
179         ALS4K_GCRA6_PM_CTRL = 0xa6,
180         ALS4K_GCRA7_PCI_ACCESS_STORAGE = 0xa7,
181         ALS4K_GCRA8_LEGACY_CFG1 = 0xa8,
182         ALS4K_GCRA9_LEGACY_CFG2 = 0xa9,
183         ALS4K_GCRFF_DUMMY_SCRATCH = 0xff,
184 };
185 
186 enum als4k_gcr8c_t {
187         ALS4K_GCR8C_IRQ_MASK_CTRL_ENABLE = 0x8000,
188         ALS4K_GCR8C_CHIP_REV_MASK = 0xf0000
189 };
190 
191 static inline void snd_als4k_iobase_writeb(unsigned long iobase,
192                                                 enum als4k_iobase_t reg,
193                                                 u8 val)
194 {
195         outb(val, iobase + reg);
196 }
197 
198 static inline void snd_als4k_iobase_writel(unsigned long iobase,
199                                                 enum als4k_iobase_t reg,
200                                                 u32 val)
201 {
202         outl(val, iobase + reg);
203 }
204 
205 static inline u8 snd_als4k_iobase_readb(unsigned long iobase,
206                                                 enum als4k_iobase_t reg)
207 {
208         return inb(iobase + reg);
209 }
210 
211 static inline u32 snd_als4k_iobase_readl(unsigned long iobase,
212                                                 enum als4k_iobase_t reg)
213 {
214         return inl(iobase + reg);
215 }
216 
217 static inline void snd_als4k_gcr_write_addr(unsigned long iobase,
218                                                  enum als4k_gcr_t reg,
219                                                  u32 val)
220 {
221         snd_als4k_iobase_writeb(iobase, ALS4K_IOB_0C_GCR_INDEX, reg);
222         snd_als4k_iobase_writel(iobase, ALS4K_IOD_08_GCR_DATA, val);
223 }
224 
225 static inline void snd_als4k_gcr_write(struct snd_sb *sb,
226                                          enum als4k_gcr_t reg,
227                                          u32 val)
228 {
229         snd_als4k_gcr_write_addr(sb->alt_port, reg, val);
230 }       
231 
232 static inline u32 snd_als4k_gcr_read_addr(unsigned long iobase,
233                                                  enum als4k_gcr_t reg)
234 {
235         /* SPECS_PAGE: 37/38 */
236         snd_als4k_iobase_writeb(iobase, ALS4K_IOB_0C_GCR_INDEX, reg);
237         return snd_als4k_iobase_readl(iobase, ALS4K_IOD_08_GCR_DATA);
238 }
239 
240 static inline u32 snd_als4k_gcr_read(struct snd_sb *sb, enum als4k_gcr_t reg)
241 {
242         return snd_als4k_gcr_read_addr(sb->alt_port, reg);
243 }
244 
245 enum als4k_cr_t { /* all registers 8bit wide; SPECS_PAGE: 20 to 23 */
246         ALS4K_CR0_SB_CONFIG = 0x00,
247         ALS4K_CR2_MISC_CONTROL = 0x02,
248         ALS4K_CR3_CONFIGURATION = 0x03,
249         ALS4K_CR17_FIFO_STATUS = 0x17,
250         ALS4K_CR18_ESP_MAJOR_VERSION = 0x18,
251         ALS4K_CR19_ESP_MINOR_VERSION = 0x19,
252         ALS4K_CR1A_MPU401_UART_MODE_CONTROL = 0x1a,
253         ALS4K_CR1C_FIFO2_BLOCK_LENGTH_LO = 0x1c,
254         ALS4K_CR1D_FIFO2_BLOCK_LENGTH_HI = 0x1d,
255         ALS4K_CR1E_FIFO2_CONTROL = 0x1e, /* secondary PCM FIFO (recording) */
256         ALS4K_CR3A_MISC_CONTROL = 0x3a,
257         ALS4K_CR3B_CRC32_BYTE0 = 0x3b, /* for testing, activate via CR3A */
258         ALS4K_CR3C_CRC32_BYTE1 = 0x3c,
259         ALS4K_CR3D_CRC32_BYTE2 = 0x3d,
260         ALS4K_CR3E_CRC32_BYTE3 = 0x3e,
261 };
262 
263 enum als4k_cr0_t {
264         ALS4K_CR0_DMA_CONTIN_MODE_CTRL = 0x02, /* IRQ/FIFO controlled for 0/1 */
265         ALS4K_CR0_DMA_90H_MODE_CTRL = 0x04, /* IRQ/FIFO controlled for 0/1 */
266         ALS4K_CR0_MX80_81_REG_WRITE_ENABLE = 0x80,
267 };
268 
269 static inline void snd_als4_cr_write(struct snd_sb *chip,
270                                         enum als4k_cr_t reg,
271                                         u8 data)
272 {
273         /* Control Register is reg | 0xc0 (bit 7, 6 set) on sbmixer_index
274          * NOTE: assumes chip->mixer_lock to be locked externally already!
275          * SPECS_PAGE: 6 */
276         snd_sbmixer_write(chip, reg | 0xc0, data);
277 }
278 
279 static inline u8 snd_als4_cr_read(struct snd_sb *chip,
280                                         enum als4k_cr_t reg)
281 {
282         /* NOTE: assumes chip->mixer_lock to be locked externally already! */
283         return snd_sbmixer_read(chip, reg | 0xc0);
284 }
285 
286 
287 
288 static void snd_als4000_set_rate(struct snd_sb *chip, unsigned int rate)
289 {
290         if (!(chip->mode & SB_RATE_LOCK)) {
291                 snd_sbdsp_command(chip, SB_DSP_SAMPLE_RATE_OUT);
292                 snd_sbdsp_command(chip, rate>>8);
293                 snd_sbdsp_command(chip, rate);
294         }
295 }
296 
297 static inline void snd_als4000_set_capture_dma(struct snd_sb *chip,
298                                                dma_addr_t addr, unsigned size)
299 {
300         /* SPECS_PAGE: 40 */
301         snd_als4k_gcr_write(chip, ALS4K_GCRA2_FIFO2_PCIADDR, addr);
302         snd_als4k_gcr_write(chip, ALS4K_GCRA3_FIFO2_COUNT, (size-1));
303 }
304 
305 static inline void snd_als4000_set_playback_dma(struct snd_sb *chip,
306                                                 dma_addr_t addr,
307                                                 unsigned size)
308 {
309         /* SPECS_PAGE: 38 */
310         snd_als4k_gcr_write(chip, ALS4K_GCR91_DMA0_ADDR, addr);
311         snd_als4k_gcr_write(chip, ALS4K_GCR92_DMA0_MODE_COUNT,
312                                                         (size-1)|0x180000);
313 }
314 
315 #define ALS4000_FORMAT_SIGNED   (1<<0)
316 #define ALS4000_FORMAT_16BIT    (1<<1)
317 #define ALS4000_FORMAT_STEREO   (1<<2)
318 
319 static int snd_als4000_get_format(struct snd_pcm_runtime *runtime)
320 {
321         int result;
322 
323         result = 0;
324         if (snd_pcm_format_signed(runtime->format))
325                 result |= ALS4000_FORMAT_SIGNED;
326         if (snd_pcm_format_physical_width(runtime->format) == 16)
327                 result |= ALS4000_FORMAT_16BIT;
328         if (runtime->channels > 1)
329                 result |= ALS4000_FORMAT_STEREO;
330         return result;
331 }
332 
333 /* structure for setting up playback */
334 static const struct {
335         unsigned char dsp_cmd, dma_on, dma_off, format;
336 } playback_cmd_vals[]={
337 /* ALS4000_FORMAT_U8_MONO */
338 { SB_DSP4_OUT8_AI, SB_DSP_DMA8_ON, SB_DSP_DMA8_OFF, SB_DSP4_MODE_UNS_MONO },
339 /* ALS4000_FORMAT_S8_MONO */    
340 { SB_DSP4_OUT8_AI, SB_DSP_DMA8_ON, SB_DSP_DMA8_OFF, SB_DSP4_MODE_SIGN_MONO },
341 /* ALS4000_FORMAT_U16L_MONO */
342 { SB_DSP4_OUT16_AI, SB_DSP_DMA16_ON, SB_DSP_DMA16_OFF, SB_DSP4_MODE_UNS_MONO },
343 /* ALS4000_FORMAT_S16L_MONO */
344 { SB_DSP4_OUT16_AI, SB_DSP_DMA16_ON, SB_DSP_DMA16_OFF, SB_DSP4_MODE_SIGN_MONO },
345 /* ALS4000_FORMAT_U8_STEREO */
346 { SB_DSP4_OUT8_AI, SB_DSP_DMA8_ON, SB_DSP_DMA8_OFF, SB_DSP4_MODE_UNS_STEREO },
347 /* ALS4000_FORMAT_S8_STEREO */  
348 { SB_DSP4_OUT8_AI, SB_DSP_DMA8_ON, SB_DSP_DMA8_OFF, SB_DSP4_MODE_SIGN_STEREO },
349 /* ALS4000_FORMAT_U16L_STEREO */
350 { SB_DSP4_OUT16_AI, SB_DSP_DMA16_ON, SB_DSP_DMA16_OFF, SB_DSP4_MODE_UNS_STEREO },
351 /* ALS4000_FORMAT_S16L_STEREO */
352 { SB_DSP4_OUT16_AI, SB_DSP_DMA16_ON, SB_DSP_DMA16_OFF, SB_DSP4_MODE_SIGN_STEREO },
353 };
354 #define playback_cmd(chip) (playback_cmd_vals[(chip)->playback_format])
355 
356 /* structure for setting up capture */
357 enum { CMD_WIDTH8=0x04, CMD_SIGNED=0x10, CMD_MONO=0x80, CMD_STEREO=0xA0 };
358 static const unsigned char capture_cmd_vals[]=
359 {
360 CMD_WIDTH8|CMD_MONO,                    /* ALS4000_FORMAT_U8_MONO */
361 CMD_WIDTH8|CMD_SIGNED|CMD_MONO,         /* ALS4000_FORMAT_S8_MONO */    
362 CMD_MONO,                               /* ALS4000_FORMAT_U16L_MONO */
363 CMD_SIGNED|CMD_MONO,                    /* ALS4000_FORMAT_S16L_MONO */
364 CMD_WIDTH8|CMD_STEREO,                  /* ALS4000_FORMAT_U8_STEREO */
365 CMD_WIDTH8|CMD_SIGNED|CMD_STEREO,       /* ALS4000_FORMAT_S8_STEREO */  
366 CMD_STEREO,                             /* ALS4000_FORMAT_U16L_STEREO */
367 CMD_SIGNED|CMD_STEREO,                  /* ALS4000_FORMAT_S16L_STEREO */
368 };      
369 #define capture_cmd(chip) (capture_cmd_vals[(chip)->capture_format])
370 
371 static int snd_als4000_hw_params(struct snd_pcm_substream *substream,
372                                  struct snd_pcm_hw_params *hw_params)
373 {
374         return snd_pcm_lib_malloc_pages(substream, params_buffer_bytes(hw_params));
375 }
376 
377 static int snd_als4000_hw_free(struct snd_pcm_substream *substream)
378 {
379         snd_pcm_lib_free_pages(substream);
380         return 0;
381 }
382 
383 static int snd_als4000_capture_prepare(struct snd_pcm_substream *substream)
384 {
385         struct snd_sb *chip = snd_pcm_substream_chip(substream);
386         struct snd_pcm_runtime *runtime = substream->runtime;
387         unsigned long size;
388         unsigned count;
389 
390         chip->capture_format = snd_als4000_get_format(runtime);
391                 
392         size = snd_pcm_lib_buffer_bytes(substream);
393         count = snd_pcm_lib_period_bytes(substream);
394         
395         if (chip->capture_format & ALS4000_FORMAT_16BIT)
396                 count >>= 1;
397         count--;
398 
399         spin_lock_irq(&chip->reg_lock);
400         snd_als4000_set_rate(chip, runtime->rate);
401         snd_als4000_set_capture_dma(chip, runtime->dma_addr, size);
402         spin_unlock_irq(&chip->reg_lock);
403         spin_lock_irq(&chip->mixer_lock);
404         snd_als4_cr_write(chip, ALS4K_CR1C_FIFO2_BLOCK_LENGTH_LO, count & 0xff);
405         snd_als4_cr_write(chip, ALS4K_CR1D_FIFO2_BLOCK_LENGTH_HI, count >> 8);
406         spin_unlock_irq(&chip->mixer_lock);
407         return 0;
408 }
409 
410 static int snd_als4000_playback_prepare(struct snd_pcm_substream *substream)
411 {
412         struct snd_sb *chip = snd_pcm_substream_chip(substream);
413         struct snd_pcm_runtime *runtime = substream->runtime;
414         unsigned long size;
415         unsigned count;
416 
417         chip->playback_format = snd_als4000_get_format(runtime);
418         
419         size = snd_pcm_lib_buffer_bytes(substream);
420         count = snd_pcm_lib_period_bytes(substream);
421         
422         if (chip->playback_format & ALS4000_FORMAT_16BIT)
423                 count >>= 1;
424         count--;
425         
426         /* FIXME: from second playback on, there's a lot more clicks and pops
427          * involved here than on first playback. Fiddling with
428          * tons of different settings didn't help (DMA, speaker on/off,
429          * reordering, ...). Something seems to get enabled on playback
430          * that I haven't found out how to disable again, which then causes
431          * the switching pops to reach the speakers the next time here. */
432         spin_lock_irq(&chip->reg_lock);
433         snd_als4000_set_rate(chip, runtime->rate);
434         snd_als4000_set_playback_dma(chip, runtime->dma_addr, size);
435         
436         /* SPEAKER_ON not needed, since dma_on seems to also enable speaker */
437         /* snd_sbdsp_command(chip, SB_DSP_SPEAKER_ON); */
438         snd_sbdsp_command(chip, playback_cmd(chip).dsp_cmd);
439         snd_sbdsp_command(chip, playback_cmd(chip).format);
440         snd_sbdsp_command(chip, count & 0xff);
441         snd_sbdsp_command(chip, count >> 8);
442         snd_sbdsp_command(chip, playback_cmd(chip).dma_off);    
443         spin_unlock_irq(&chip->reg_lock);
444         
445         return 0;
446 }
447 
448 static int snd_als4000_capture_trigger(struct snd_pcm_substream *substream, int cmd)
449 {
450         struct snd_sb *chip = snd_pcm_substream_chip(substream);
451         int result = 0;
452         
453         /* FIXME race condition in here!!!
454            chip->mode non-atomic update gets consistently protected
455            by reg_lock always, _except_ for this place!!
456            Probably need to take reg_lock as outer (or inner??) lock, too.
457            (or serialize both lock operations? probably not, though... - racy?)
458         */
459         spin_lock(&chip->mixer_lock);
460         switch (cmd) {
461         case SNDRV_PCM_TRIGGER_START:
462         case SNDRV_PCM_TRIGGER_RESUME:
463                 chip->mode |= SB_RATE_LOCK_CAPTURE;
464                 snd_als4_cr_write(chip, ALS4K_CR1E_FIFO2_CONTROL,
465                                                          capture_cmd(chip));
466                 break;
467         case SNDRV_PCM_TRIGGER_STOP:
468         case SNDRV_PCM_TRIGGER_SUSPEND:
469                 chip->mode &= ~SB_RATE_LOCK_CAPTURE;
470                 snd_als4_cr_write(chip, ALS4K_CR1E_FIFO2_CONTROL,
471                                                          capture_cmd(chip));
472                 break;
473         default:
474                 result = -EINVAL;
475                 break;
476         }
477         spin_unlock(&chip->mixer_lock);
478         return result;
479 }
480 
481 static int snd_als4000_playback_trigger(struct snd_pcm_substream *substream, int cmd)
482 {
483         struct snd_sb *chip = snd_pcm_substream_chip(substream);
484         int result = 0;
485 
486         spin_lock(&chip->reg_lock);
487         switch (cmd) {
488         case SNDRV_PCM_TRIGGER_START:
489         case SNDRV_PCM_TRIGGER_RESUME:
490                 chip->mode |= SB_RATE_LOCK_PLAYBACK;
491                 snd_sbdsp_command(chip, playback_cmd(chip).dma_on);
492                 break;
493         case SNDRV_PCM_TRIGGER_STOP:
494         case SNDRV_PCM_TRIGGER_SUSPEND:
495                 snd_sbdsp_command(chip, playback_cmd(chip).dma_off);
496                 chip->mode &= ~SB_RATE_LOCK_PLAYBACK;
497                 break;
498         default:
499                 result = -EINVAL;
500                 break;
501         }
502         spin_unlock(&chip->reg_lock);
503         return result;
504 }
505 
506 static snd_pcm_uframes_t snd_als4000_capture_pointer(struct snd_pcm_substream *substream)
507 {
508         struct snd_sb *chip = snd_pcm_substream_chip(substream);
509         unsigned int result;
510 
511         spin_lock(&chip->reg_lock);     
512         result = snd_als4k_gcr_read(chip, ALS4K_GCRA4_FIFO2_CURRENT_ADDR);
513         spin_unlock(&chip->reg_lock);
514         result &= 0xffff;
515         return bytes_to_frames( substream->runtime, result );
516 }
517 
518 static snd_pcm_uframes_t snd_als4000_playback_pointer(struct snd_pcm_substream *substream)
519 {
520         struct snd_sb *chip = snd_pcm_substream_chip(substream);
521         unsigned result;
522 
523         spin_lock(&chip->reg_lock);     
524         result = snd_als4k_gcr_read(chip, ALS4K_GCRA0_FIFO1_CURRENT_ADDR);
525         spin_unlock(&chip->reg_lock);
526         result &= 0xffff;
527         return bytes_to_frames( substream->runtime, result );
528 }
529 
530 /* FIXME: this IRQ routine doesn't really support IRQ sharing (we always
531  * return IRQ_HANDLED no matter whether we actually had an IRQ flag or not).
532  * ALS4000a.PDF writes that while ACKing IRQ in PCI block will *not* ACK
533  * the IRQ in the SB core, ACKing IRQ in SB block *will* ACK the PCI IRQ
534  * register (alt_port + ALS4K_IOB_0E_IRQTYPE_SB_CR1E_MPU). Probably something
535  * could be optimized here to query/write one register only...
536  * And even if both registers need to be queried, then there's still the
537  * question of whether it's actually correct to ACK PCI IRQ before reading
538  * SB IRQ like we do now, since ALS4000a.PDF mentions that PCI IRQ will *clear*
539  * SB IRQ status.
540  * (hmm, SPECS_PAGE: 38 mentions it the other way around!)
541  * And do we *really* need the lock here for *reading* SB_DSP4_IRQSTATUS??
542  * */
543 static irqreturn_t snd_als4000_interrupt(int irq, void *dev_id)
544 {
545         struct snd_sb *chip = dev_id;
546         unsigned pci_irqstatus;
547         unsigned sb_irqstatus;
548 
549         /* find out which bit of the ALS4000 PCI block produced the interrupt,
550            SPECS_PAGE: 38, 5 */
551         pci_irqstatus = snd_als4k_iobase_readb(chip->alt_port,
552                                  ALS4K_IOB_0E_IRQTYPE_SB_CR1E_MPU);
553         if ((pci_irqstatus & ALS4K_IOB_0E_SB_DMA_IRQ)
554          && (chip->playback_substream)) /* playback */
555                 snd_pcm_period_elapsed(chip->playback_substream);
556         if ((pci_irqstatus & ALS4K_IOB_0E_CR1E_IRQ)
557          && (chip->capture_substream)) /* capturing */
558                 snd_pcm_period_elapsed(chip->capture_substream);
559         if ((pci_irqstatus & ALS4K_IOB_0E_MPU_IRQ)
560          && (chip->rmidi)) /* MPU401 interrupt */
561                 snd_mpu401_uart_interrupt(irq, chip->rmidi->private_data);
562         /* ACK the PCI block IRQ */
563         snd_als4k_iobase_writeb(chip->alt_port,
564                          ALS4K_IOB_0E_IRQTYPE_SB_CR1E_MPU, pci_irqstatus);
565         
566         spin_lock(&chip->mixer_lock);
567         /* SPECS_PAGE: 20 */
568         sb_irqstatus = snd_sbmixer_read(chip, SB_DSP4_IRQSTATUS);
569         spin_unlock(&chip->mixer_lock);
570         
571         if (sb_irqstatus & SB_IRQTYPE_8BIT)
572                 snd_sb_ack_8bit(chip);
573         if (sb_irqstatus & SB_IRQTYPE_16BIT)
574                 snd_sb_ack_16bit(chip);
575         if (sb_irqstatus & SB_IRQTYPE_MPUIN)
576                 inb(chip->mpu_port);
577         if (sb_irqstatus & ALS4K_IRQTYPE_CR1E_DMA)
578                 snd_als4k_iobase_readb(chip->alt_port,
579                                         ALS4K_IOB_16_ACK_FOR_CR1E);
580 
581         /* dev_dbg(chip->card->dev, "als4000: irq 0x%04x 0x%04x\n",
582                                          pci_irqstatus, sb_irqstatus); */
583 
584         /* only ack the things we actually handled above */
585         return IRQ_RETVAL(
586              (pci_irqstatus & (ALS4K_IOB_0E_SB_DMA_IRQ|ALS4K_IOB_0E_CR1E_IRQ|
587                                 ALS4K_IOB_0E_MPU_IRQ))
588           || (sb_irqstatus & (SB_IRQTYPE_8BIT|SB_IRQTYPE_16BIT|
589                                 SB_IRQTYPE_MPUIN|ALS4K_IRQTYPE_CR1E_DMA))
590         );
591 }
592 
593 /*****************************************************************/
594 
595 static struct snd_pcm_hardware snd_als4000_playback =
596 {
597         .info =                 (SNDRV_PCM_INFO_MMAP | SNDRV_PCM_INFO_INTERLEAVED |
598                                  SNDRV_PCM_INFO_MMAP_VALID),
599         .formats =              SNDRV_PCM_FMTBIT_S8 | SNDRV_PCM_FMTBIT_U8 |
600                                 SNDRV_PCM_FMTBIT_S16_LE | SNDRV_PCM_FMTBIT_U16_LE,      /* formats */
601         .rates =                SNDRV_PCM_RATE_CONTINUOUS | SNDRV_PCM_RATE_8000_48000,
602         .rate_min =             4000,
603         .rate_max =             48000,
604         .channels_min =         1,
605         .channels_max =         2,
606         .buffer_bytes_max =     65536,
607         .period_bytes_min =     64,
608         .period_bytes_max =     65536,
609         .periods_min =          1,
610         .periods_max =          1024,
611         .fifo_size =            0
612 };
613 
614 static struct snd_pcm_hardware snd_als4000_capture =
615 {
616         .info =                 (SNDRV_PCM_INFO_MMAP | SNDRV_PCM_INFO_INTERLEAVED |
617                                  SNDRV_PCM_INFO_MMAP_VALID),
618         .formats =              SNDRV_PCM_FMTBIT_S8 | SNDRV_PCM_FMTBIT_U8 |
619                                 SNDRV_PCM_FMTBIT_S16_LE | SNDRV_PCM_FMTBIT_U16_LE,      /* formats */
620         .rates =                SNDRV_PCM_RATE_CONTINUOUS | SNDRV_PCM_RATE_8000_48000,
621         .rate_min =             4000,
622         .rate_max =             48000,
623         .channels_min =         1,
624         .channels_max =         2,
625         .buffer_bytes_max =     65536,
626         .period_bytes_min =     64,
627         .period_bytes_max =     65536,
628         .periods_min =          1,
629         .periods_max =          1024,
630         .fifo_size =            0
631 };
632 
633 /*****************************************************************/
634 
635 static int snd_als4000_playback_open(struct snd_pcm_substream *substream)
636 {
637         struct snd_sb *chip = snd_pcm_substream_chip(substream);
638         struct snd_pcm_runtime *runtime = substream->runtime;
639 
640         chip->playback_substream = substream;
641         runtime->hw = snd_als4000_playback;
642         return 0;
643 }
644 
645 static int snd_als4000_playback_close(struct snd_pcm_substream *substream)
646 {
647         struct snd_sb *chip = snd_pcm_substream_chip(substream);
648 
649         chip->playback_substream = NULL;
650         snd_pcm_lib_free_pages(substream);
651         return 0;
652 }
653 
654 static int snd_als4000_capture_open(struct snd_pcm_substream *substream)
655 {
656         struct snd_sb *chip = snd_pcm_substream_chip(substream);
657         struct snd_pcm_runtime *runtime = substream->runtime;
658 
659         chip->capture_substream = substream;
660         runtime->hw = snd_als4000_capture;
661         return 0;
662 }
663 
664 static int snd_als4000_capture_close(struct snd_pcm_substream *substream)
665 {
666         struct snd_sb *chip = snd_pcm_substream_chip(substream);
667 
668         chip->capture_substream = NULL;
669         snd_pcm_lib_free_pages(substream);
670         return 0;
671 }
672 
673 /******************************************************************/
674 
675 static struct snd_pcm_ops snd_als4000_playback_ops = {
676         .open =         snd_als4000_playback_open,
677         .close =        snd_als4000_playback_close,
678         .ioctl =        snd_pcm_lib_ioctl,
679         .hw_params =    snd_als4000_hw_params,
680         .hw_free =      snd_als4000_hw_free,
681         .prepare =      snd_als4000_playback_prepare,
682         .trigger =      snd_als4000_playback_trigger,
683         .pointer =      snd_als4000_playback_pointer
684 };
685 
686 static struct snd_pcm_ops snd_als4000_capture_ops = {
687         .open =         snd_als4000_capture_open,
688         .close =        snd_als4000_capture_close,
689         .ioctl =        snd_pcm_lib_ioctl,
690         .hw_params =    snd_als4000_hw_params,
691         .hw_free =      snd_als4000_hw_free,
692         .prepare =      snd_als4000_capture_prepare,
693         .trigger =      snd_als4000_capture_trigger,
694         .pointer =      snd_als4000_capture_pointer
695 };
696 
697 static int snd_als4000_pcm(struct snd_sb *chip, int device)
698 {
699         struct snd_pcm *pcm;
700         int err;
701 
702         err = snd_pcm_new(chip->card, "ALS4000 DSP", device, 1, 1, &pcm);
703         if (err < 0)
704                 return err;
705         pcm->private_data = chip;
706         pcm->info_flags = SNDRV_PCM_INFO_JOINT_DUPLEX;
707         snd_pcm_set_ops(pcm, SNDRV_PCM_STREAM_PLAYBACK, &snd_als4000_playback_ops);
708         snd_pcm_set_ops(pcm, SNDRV_PCM_STREAM_CAPTURE, &snd_als4000_capture_ops);
709 
710         snd_pcm_lib_preallocate_pages_for_all(pcm, SNDRV_DMA_TYPE_DEV, snd_dma_pci_data(chip->pci),
711                                               64*1024, 64*1024);
712 
713         chip->pcm = pcm;
714 
715         return 0;
716 }
717 
718 /******************************************************************/
719 
720 static void snd_als4000_set_addr(unsigned long iobase,
721                                         unsigned int sb_io,
722                                         unsigned int mpu_io,
723                                         unsigned int opl_io,
724                                         unsigned int game_io)
725 {
726         u32 cfg1 = 0;
727         u32 cfg2 = 0;
728 
729         if (mpu_io > 0)
730                 cfg2 |= (mpu_io | 1) << 16;
731         if (sb_io > 0)
732                 cfg2 |= (sb_io | 1);
733         if (game_io > 0)
734                 cfg1 |= (game_io | 1) << 16;
735         if (opl_io > 0)
736                 cfg1 |= (opl_io | 1);
737         snd_als4k_gcr_write_addr(iobase, ALS4K_GCRA8_LEGACY_CFG1, cfg1);
738         snd_als4k_gcr_write_addr(iobase, ALS4K_GCRA9_LEGACY_CFG2, cfg2);
739 }
740 
741 static void snd_als4000_configure(struct snd_sb *chip)
742 {
743         u8 tmp;
744         int i;
745 
746         /* do some more configuration */
747         spin_lock_irq(&chip->mixer_lock);
748         tmp = snd_als4_cr_read(chip, ALS4K_CR0_SB_CONFIG);
749         snd_als4_cr_write(chip, ALS4K_CR0_SB_CONFIG,
750                                 tmp|ALS4K_CR0_MX80_81_REG_WRITE_ENABLE);
751         /* always select DMA channel 0, since we do not actually use DMA
752          * SPECS_PAGE: 19/20 */
753         snd_sbmixer_write(chip, SB_DSP4_DMASETUP, SB_DMASETUP_DMA0);
754         snd_als4_cr_write(chip, ALS4K_CR0_SB_CONFIG,
755                                  tmp & ~ALS4K_CR0_MX80_81_REG_WRITE_ENABLE);
756         spin_unlock_irq(&chip->mixer_lock);
757         
758         spin_lock_irq(&chip->reg_lock);
759         /* enable interrupts */
760         snd_als4k_gcr_write(chip, ALS4K_GCR8C_MISC_CTRL,
761                                         ALS4K_GCR8C_IRQ_MASK_CTRL_ENABLE);
762 
763         /* SPECS_PAGE: 39 */
764         for (i = ALS4K_GCR91_DMA0_ADDR; i <= ALS4K_GCR96_DMA3_MODE_COUNT; ++i)
765                 snd_als4k_gcr_write(chip, i, 0);
766         /* enable burst mode to prevent dropouts during high PCI bus usage */
767         snd_als4k_gcr_write(chip, ALS4K_GCR99_DMA_EMULATION_CTRL,
768                 (snd_als4k_gcr_read(chip, ALS4K_GCR99_DMA_EMULATION_CTRL) & ~0x07) | 0x04);
769         spin_unlock_irq(&chip->reg_lock);
770 }
771 
772 #ifdef SUPPORT_JOYSTICK
773 static int snd_als4000_create_gameport(struct snd_card_als4000 *acard, int dev)
774 {
775         struct gameport *gp;
776         struct resource *r;
777         int io_port;
778 
779         if (joystick_port[dev] == 0)
780                 return -ENODEV;
781 
782         if (joystick_port[dev] == 1) { /* auto-detect */
783                 for (io_port = 0x200; io_port <= 0x218; io_port += 8) {
784                         r = request_region(io_port, 8, "ALS4000 gameport");
785                         if (r)
786                                 break;
787                 }
788         } else {
789                 io_port = joystick_port[dev];
790                 r = request_region(io_port, 8, "ALS4000 gameport");
791         }
792 
793         if (!r) {
794                 dev_warn(&acard->pci->dev, "cannot reserve joystick ports\n");
795                 return -EBUSY;
796         }
797 
798         acard->gameport = gp = gameport_allocate_port();
799         if (!gp) {
800                 dev_err(&acard->pci->dev, "cannot allocate memory for gameport\n");
801                 release_and_free_resource(r);
802                 return -ENOMEM;
803         }
804 
805         gameport_set_name(gp, "ALS4000 Gameport");
806         gameport_set_phys(gp, "pci%s/gameport0", pci_name(acard->pci));
807         gameport_set_dev_parent(gp, &acard->pci->dev);
808         gp->io = io_port;
809         gameport_set_port_data(gp, r);
810 
811         /* Enable legacy joystick port */
812         snd_als4000_set_addr(acard->iobase, 0, 0, 0, 1);
813 
814         gameport_register_port(acard->gameport);
815 
816         return 0;
817 }
818 
819 static void snd_als4000_free_gameport(struct snd_card_als4000 *acard)
820 {
821         if (acard->gameport) {
822                 struct resource *r = gameport_get_port_data(acard->gameport);
823 
824                 gameport_unregister_port(acard->gameport);
825                 acard->gameport = NULL;
826 
827                 /* disable joystick */
828                 snd_als4000_set_addr(acard->iobase, 0, 0, 0, 0);
829 
830                 release_and_free_resource(r);
831         }
832 }
833 #else
834 static inline int snd_als4000_create_gameport(struct snd_card_als4000 *acard, int dev) { return -ENOSYS; }
835 static inline void snd_als4000_free_gameport(struct snd_card_als4000 *acard) { }
836 #endif
837 
838 static void snd_card_als4000_free( struct snd_card *card )
839 {
840         struct snd_card_als4000 *acard = card->private_data;
841 
842         /* make sure that interrupts are disabled */
843         snd_als4k_gcr_write_addr(acard->iobase, ALS4K_GCR8C_MISC_CTRL, 0);
844         /* free resources */
845         snd_als4000_free_gameport(acard);
846         pci_release_regions(acard->pci);
847         pci_disable_device(acard->pci);
848 }
849 
850 static int snd_card_als4000_probe(struct pci_dev *pci,
851                                   const struct pci_device_id *pci_id)
852 {
853         static int dev;
854         struct snd_card *card;
855         struct snd_card_als4000 *acard;
856         unsigned long iobase;
857         struct snd_sb *chip;
858         struct snd_opl3 *opl3;
859         unsigned short word;
860         int err;
861 
862         if (dev >= SNDRV_CARDS)
863                 return -ENODEV;
864         if (!enable[dev]) {
865                 dev++;
866                 return -ENOENT;
867         }
868 
869         /* enable PCI device */
870         if ((err = pci_enable_device(pci)) < 0) {
871                 return err;
872         }
873         /* check, if we can restrict PCI DMA transfers to 24 bits */
874         if (pci_set_dma_mask(pci, DMA_BIT_MASK(24)) < 0 ||
875             pci_set_consistent_dma_mask(pci, DMA_BIT_MASK(24)) < 0) {
876                 dev_err(&pci->dev, "architecture does not support 24bit PCI busmaster DMA\n");
877                 pci_disable_device(pci);
878                 return -ENXIO;
879         }
880 
881         if ((err = pci_request_regions(pci, "ALS4000")) < 0) {
882                 pci_disable_device(pci);
883                 return err;
884         }
885         iobase = pci_resource_start(pci, 0);
886 
887         pci_read_config_word(pci, PCI_COMMAND, &word);
888         pci_write_config_word(pci, PCI_COMMAND, word | PCI_COMMAND_IO);
889         pci_set_master(pci);
890         
891         err = snd_card_new(&pci->dev, index[dev], id[dev], THIS_MODULE,
892                            sizeof(*acard) /* private_data: acard */,
893                            &card);
894         if (err < 0) {
895                 pci_release_regions(pci);
896                 pci_disable_device(pci);
897                 return err;
898         }
899 
900         acard = card->private_data;
901         acard->pci = pci;
902         acard->iobase = iobase;
903         card->private_free = snd_card_als4000_free;
904 
905         /* disable all legacy ISA stuff */
906         snd_als4000_set_addr(acard->iobase, 0, 0, 0, 0);
907 
908         if ((err = snd_sbdsp_create(card,
909                                     iobase + ALS4K_IOB_10_ADLIB_ADDR0,
910                                     pci->irq,
911                 /* internally registered as IRQF_SHARED in case of ALS4000 SB */
912                                     snd_als4000_interrupt,
913                                     -1,
914                                     -1,
915                                     SB_HW_ALS4000,
916                                     &chip)) < 0) {
917                 goto out_err;
918         }
919         acard->chip = chip;
920 
921         chip->pci = pci;
922         chip->alt_port = iobase;
923 
924         snd_als4000_configure(chip);
925 
926         strcpy(card->driver, "ALS4000");
927         strcpy(card->shortname, "Avance Logic ALS4000");
928         sprintf(card->longname, "%s at 0x%lx, irq %i",
929                 card->shortname, chip->alt_port, chip->irq);
930 
931         if ((err = snd_mpu401_uart_new( card, 0, MPU401_HW_ALS4000,
932                                         iobase + ALS4K_IOB_30_MIDI_DATA,
933                                         MPU401_INFO_INTEGRATED |
934                                         MPU401_INFO_IRQ_HOOK,
935                                         -1, &chip->rmidi)) < 0) {
936                 dev_err(&pci->dev, "no MPU-401 device at 0x%lx?\n",
937                                 iobase + ALS4K_IOB_30_MIDI_DATA);
938                 goto out_err;
939         }
940         /* FIXME: ALS4000 has interesting MPU401 configuration features
941          * at ALS4K_CR1A_MPU401_UART_MODE_CONTROL
942          * (pass-thru / UART switching, fast MIDI clock, etc.),
943          * however there doesn't seem to be an ALSA API for this...
944          * SPECS_PAGE: 21 */
945 
946         if ((err = snd_als4000_pcm(chip, 0)) < 0) {
947                 goto out_err;
948         }
949         if ((err = snd_sbmixer_new(chip)) < 0) {
950                 goto out_err;
951         }           
952 
953         if (snd_opl3_create(card,
954                                 iobase + ALS4K_IOB_10_ADLIB_ADDR0,
955                                 iobase + ALS4K_IOB_12_ADLIB_ADDR2,
956                             OPL3_HW_AUTO, 1, &opl3) < 0) {
957                 dev_err(&pci->dev, "no OPL device at 0x%lx-0x%lx?\n",
958                            iobase + ALS4K_IOB_10_ADLIB_ADDR0,
959                            iobase + ALS4K_IOB_12_ADLIB_ADDR2);
960         } else {
961                 if ((err = snd_opl3_hwdep_new(opl3, 0, 1, NULL)) < 0) {
962                         goto out_err;
963                 }
964         }
965 
966         snd_als4000_create_gameport(acard, dev);
967 
968         if ((err = snd_card_register(card)) < 0) {
969                 goto out_err;
970         }
971         pci_set_drvdata(pci, card);
972         dev++;
973         err = 0;
974         goto out;
975 
976 out_err:
977         snd_card_free(card);
978         
979 out:
980         return err;
981 }
982 
983 static void snd_card_als4000_remove(struct pci_dev *pci)
984 {
985         snd_card_free(pci_get_drvdata(pci));
986 }
987 
988 #ifdef CONFIG_PM_SLEEP
989 static int snd_als4000_suspend(struct device *dev)
990 {
991         struct pci_dev *pci = to_pci_dev(dev);
992         struct snd_card *card = dev_get_drvdata(dev);
993         struct snd_card_als4000 *acard = card->private_data;
994         struct snd_sb *chip = acard->chip;
995 
996         snd_power_change_state(card, SNDRV_CTL_POWER_D3hot);
997         
998         snd_pcm_suspend_all(chip->pcm);
999         snd_sbmixer_suspend(chip);
1000 
1001         pci_disable_device(pci);
1002         pci_save_state(pci);
1003         pci_set_power_state(pci, PCI_D3hot);
1004         return 0;
1005 }
1006 
1007 static int snd_als4000_resume(struct device *dev)
1008 {
1009         struct pci_dev *pci = to_pci_dev(dev);
1010         struct snd_card *card = dev_get_drvdata(dev);
1011         struct snd_card_als4000 *acard = card->private_data;
1012         struct snd_sb *chip = acard->chip;
1013 
1014         pci_set_power_state(pci, PCI_D0);
1015         pci_restore_state(pci);
1016         if (pci_enable_device(pci) < 0) {
1017                 dev_err(dev, "pci_enable_device failed, disabling device\n");
1018                 snd_card_disconnect(card);
1019                 return -EIO;
1020         }
1021         pci_set_master(pci);
1022 
1023         snd_als4000_configure(chip);
1024         snd_sbdsp_reset(chip);
1025         snd_sbmixer_resume(chip);
1026 
1027 #ifdef SUPPORT_JOYSTICK
1028         if (acard->gameport)
1029                 snd_als4000_set_addr(acard->iobase, 0, 0, 0, 1);
1030 #endif
1031 
1032         snd_power_change_state(card, SNDRV_CTL_POWER_D0);
1033         return 0;
1034 }
1035 
1036 static SIMPLE_DEV_PM_OPS(snd_als4000_pm, snd_als4000_suspend, snd_als4000_resume);
1037 #define SND_ALS4000_PM_OPS      &snd_als4000_pm
1038 #else
1039 #define SND_ALS4000_PM_OPS      NULL
1040 #endif /* CONFIG_PM_SLEEP */
1041 
1042 static struct pci_driver als4000_driver = {
1043         .name = KBUILD_MODNAME,
1044         .id_table = snd_als4000_ids,
1045         .probe = snd_card_als4000_probe,
1046         .remove = snd_card_als4000_remove,
1047         .driver = {
1048                 .pm = SND_ALS4000_PM_OPS,
1049         },
1050 };
1051 
1052 module_pci_driver(als4000_driver);
1053 

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