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TOMOYO Linux Cross Reference
Linux/sound/pci/maestro3.c

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  1 // SPDX-License-Identifier: GPL-2.0-or-later
  2 /*
  3  * Driver for ESS Maestro3/Allegro (ES1988) soundcards.
  4  * Copyright (c) 2000 by Zach Brown <zab@zabbo.net>
  5  *                       Takashi Iwai <tiwai@suse.de>
  6  *
  7  * Most of the hardware init stuffs are based on maestro3 driver for
  8  * OSS/Free by Zach Brown.  Many thanks to Zach!
  9  *
 10  * ChangeLog:
 11  * Aug. 27, 2001
 12  *     - Fixed deadlock on capture
 13  *     - Added Canyon3D-2 support by Rob Riggs <rob@pangalactic.org>
 14  */
 15  
 16 #define CARD_NAME "ESS Maestro3/Allegro/Canyon3D-2"
 17 #define DRIVER_NAME "Maestro3"
 18 
 19 #include <linux/io.h>
 20 #include <linux/delay.h>
 21 #include <linux/interrupt.h>
 22 #include <linux/init.h>
 23 #include <linux/pci.h>
 24 #include <linux/dma-mapping.h>
 25 #include <linux/slab.h>
 26 #include <linux/vmalloc.h>
 27 #include <linux/module.h>
 28 #include <linux/firmware.h>
 29 #include <linux/input.h>
 30 #include <sound/core.h>
 31 #include <sound/info.h>
 32 #include <sound/control.h>
 33 #include <sound/pcm.h>
 34 #include <sound/mpu401.h>
 35 #include <sound/ac97_codec.h>
 36 #include <sound/initval.h>
 37 #include <asm/byteorder.h>
 38 
 39 MODULE_AUTHOR("Zach Brown <zab@zabbo.net>, Takashi Iwai <tiwai@suse.de>");
 40 MODULE_DESCRIPTION("ESS Maestro3 PCI");
 41 MODULE_LICENSE("GPL");
 42 MODULE_FIRMWARE("ess/maestro3_assp_kernel.fw");
 43 MODULE_FIRMWARE("ess/maestro3_assp_minisrc.fw");
 44 
 45 static int index[SNDRV_CARDS] = SNDRV_DEFAULT_IDX;      /* Index 0-MAX */
 46 static char *id[SNDRV_CARDS] = SNDRV_DEFAULT_STR;       /* ID for this card */
 47 static bool enable[SNDRV_CARDS] = SNDRV_DEFAULT_ENABLE_PNP; /* all enabled */
 48 static bool external_amp[SNDRV_CARDS] = {[0 ... (SNDRV_CARDS - 1)] = 1};
 49 static int amp_gpio[SNDRV_CARDS] = {[0 ... (SNDRV_CARDS - 1)] = -1};
 50 
 51 module_param_array(index, int, NULL, 0444);
 52 MODULE_PARM_DESC(index, "Index value for " CARD_NAME " soundcard.");
 53 module_param_array(id, charp, NULL, 0444);
 54 MODULE_PARM_DESC(id, "ID string for " CARD_NAME " soundcard.");
 55 module_param_array(enable, bool, NULL, 0444);
 56 MODULE_PARM_DESC(enable, "Enable this soundcard.");
 57 module_param_array(external_amp, bool, NULL, 0444);
 58 MODULE_PARM_DESC(external_amp, "Enable external amp for " CARD_NAME " soundcard.");
 59 module_param_array(amp_gpio, int, NULL, 0444);
 60 MODULE_PARM_DESC(amp_gpio, "GPIO pin number for external amp. (default = -1)");
 61 
 62 #define MAX_PLAYBACKS   2
 63 #define MAX_CAPTURES    1
 64 #define NR_DSPS         (MAX_PLAYBACKS + MAX_CAPTURES)
 65 
 66 
 67 /*
 68  * maestro3 registers
 69  */
 70 
 71 /* Allegro PCI configuration registers */
 72 #define PCI_LEGACY_AUDIO_CTRL   0x40
 73 #define SOUND_BLASTER_ENABLE    0x00000001
 74 #define FM_SYNTHESIS_ENABLE     0x00000002
 75 #define GAME_PORT_ENABLE        0x00000004
 76 #define MPU401_IO_ENABLE        0x00000008
 77 #define MPU401_IRQ_ENABLE       0x00000010
 78 #define ALIAS_10BIT_IO          0x00000020
 79 #define SB_DMA_MASK             0x000000C0
 80 #define SB_DMA_0                0x00000040
 81 #define SB_DMA_1                0x00000040
 82 #define SB_DMA_R                0x00000080
 83 #define SB_DMA_3                0x000000C0
 84 #define SB_IRQ_MASK             0x00000700
 85 #define SB_IRQ_5                0x00000000
 86 #define SB_IRQ_7                0x00000100
 87 #define SB_IRQ_9                0x00000200
 88 #define SB_IRQ_10               0x00000300
 89 #define MIDI_IRQ_MASK           0x00003800
 90 #define SERIAL_IRQ_ENABLE       0x00004000
 91 #define DISABLE_LEGACY          0x00008000
 92 
 93 #define PCI_ALLEGRO_CONFIG      0x50
 94 #define SB_ADDR_240             0x00000004
 95 #define MPU_ADDR_MASK           0x00000018
 96 #define MPU_ADDR_330            0x00000000
 97 #define MPU_ADDR_300            0x00000008
 98 #define MPU_ADDR_320            0x00000010
 99 #define MPU_ADDR_340            0x00000018
100 #define USE_PCI_TIMING          0x00000040
101 #define POSTED_WRITE_ENABLE     0x00000080
102 #define DMA_POLICY_MASK         0x00000700
103 #define DMA_DDMA                0x00000000
104 #define DMA_TDMA                0x00000100
105 #define DMA_PCPCI               0x00000200
106 #define DMA_WBDMA16             0x00000400
107 #define DMA_WBDMA4              0x00000500
108 #define DMA_WBDMA2              0x00000600
109 #define DMA_WBDMA1              0x00000700
110 #define DMA_SAFE_GUARD          0x00000800
111 #define HI_PERF_GP_ENABLE       0x00001000
112 #define PIC_SNOOP_MODE_0        0x00002000
113 #define PIC_SNOOP_MODE_1        0x00004000
114 #define SOUNDBLASTER_IRQ_MASK   0x00008000
115 #define RING_IN_ENABLE          0x00010000
116 #define SPDIF_TEST_MODE         0x00020000
117 #define CLK_MULT_MODE_SELECT_2  0x00040000
118 #define EEPROM_WRITE_ENABLE     0x00080000
119 #define CODEC_DIR_IN            0x00100000
120 #define HV_BUTTON_FROM_GD       0x00200000
121 #define REDUCED_DEBOUNCE        0x00400000
122 #define HV_CTRL_ENABLE          0x00800000
123 #define SPDIF_ENABLE            0x01000000
124 #define CLK_DIV_SELECT          0x06000000
125 #define CLK_DIV_BY_48           0x00000000
126 #define CLK_DIV_BY_49           0x02000000
127 #define CLK_DIV_BY_50           0x04000000
128 #define CLK_DIV_RESERVED        0x06000000
129 #define PM_CTRL_ENABLE          0x08000000
130 #define CLK_MULT_MODE_SELECT    0x30000000
131 #define CLK_MULT_MODE_SHIFT     28
132 #define CLK_MULT_MODE_0         0x00000000
133 #define CLK_MULT_MODE_1         0x10000000
134 #define CLK_MULT_MODE_2         0x20000000
135 #define CLK_MULT_MODE_3         0x30000000
136 #define INT_CLK_SELECT          0x40000000
137 #define INT_CLK_MULT_RESET      0x80000000
138 
139 /* M3 */
140 #define INT_CLK_SRC_NOT_PCI     0x00100000
141 #define INT_CLK_MULT_ENABLE     0x80000000
142 
143 #define PCI_ACPI_CONTROL        0x54
144 #define PCI_ACPI_D0             0x00000000
145 #define PCI_ACPI_D1             0xB4F70000
146 #define PCI_ACPI_D2             0xB4F7B4F7
147 
148 #define PCI_USER_CONFIG         0x58
149 #define EXT_PCI_MASTER_ENABLE   0x00000001
150 #define SPDIF_OUT_SELECT        0x00000002
151 #define TEST_PIN_DIR_CTRL       0x00000004
152 #define AC97_CODEC_TEST         0x00000020
153 #define TRI_STATE_BUFFER        0x00000080
154 #define IN_CLK_12MHZ_SELECT     0x00000100
155 #define MULTI_FUNC_DISABLE      0x00000200
156 #define EXT_MASTER_PAIR_SEL     0x00000400
157 #define PCI_MASTER_SUPPORT      0x00000800
158 #define STOP_CLOCK_ENABLE       0x00001000
159 #define EAPD_DRIVE_ENABLE       0x00002000
160 #define REQ_TRI_STATE_ENABLE    0x00004000
161 #define REQ_LOW_ENABLE          0x00008000
162 #define MIDI_1_ENABLE           0x00010000
163 #define MIDI_2_ENABLE           0x00020000
164 #define SB_AUDIO_SYNC           0x00040000
165 #define HV_CTRL_TEST            0x00100000
166 #define SOUNDBLASTER_TEST       0x00400000
167 
168 #define PCI_USER_CONFIG_C       0x5C
169 
170 #define PCI_DDMA_CTRL           0x60
171 #define DDMA_ENABLE             0x00000001
172 
173 
174 /* Allegro registers */
175 #define HOST_INT_CTRL           0x18
176 #define SB_INT_ENABLE           0x0001
177 #define MPU401_INT_ENABLE       0x0002
178 #define ASSP_INT_ENABLE         0x0010
179 #define RING_INT_ENABLE         0x0020
180 #define HV_INT_ENABLE           0x0040
181 #define CLKRUN_GEN_ENABLE       0x0100
182 #define HV_CTRL_TO_PME          0x0400
183 #define SOFTWARE_RESET_ENABLE   0x8000
184 
185 /*
186  * should be using the above defines, probably.
187  */
188 #define REGB_ENABLE_RESET               0x01
189 #define REGB_STOP_CLOCK                 0x10
190 
191 #define HOST_INT_STATUS         0x1A
192 #define SB_INT_PENDING          0x01
193 #define MPU401_INT_PENDING      0x02
194 #define ASSP_INT_PENDING        0x10
195 #define RING_INT_PENDING        0x20
196 #define HV_INT_PENDING          0x40
197 
198 #define HARDWARE_VOL_CTRL       0x1B
199 #define SHADOW_MIX_REG_VOICE    0x1C
200 #define HW_VOL_COUNTER_VOICE    0x1D
201 #define SHADOW_MIX_REG_MASTER   0x1E
202 #define HW_VOL_COUNTER_MASTER   0x1F
203 
204 #define CODEC_COMMAND           0x30
205 #define CODEC_READ_B            0x80
206 
207 #define CODEC_STATUS            0x30
208 #define CODEC_BUSY_B            0x01
209 
210 #define CODEC_DATA              0x32
211 
212 #define RING_BUS_CTRL_A         0x36
213 #define RAC_PME_ENABLE          0x0100
214 #define RAC_SDFS_ENABLE         0x0200
215 #define LAC_PME_ENABLE          0x0400
216 #define LAC_SDFS_ENABLE         0x0800
217 #define SERIAL_AC_LINK_ENABLE   0x1000
218 #define IO_SRAM_ENABLE          0x2000
219 #define IIS_INPUT_ENABLE        0x8000
220 
221 #define RING_BUS_CTRL_B         0x38
222 #define SECOND_CODEC_ID_MASK    0x0003
223 #define SPDIF_FUNC_ENABLE       0x0010
224 #define SECOND_AC_ENABLE        0x0020
225 #define SB_MODULE_INTF_ENABLE   0x0040
226 #define SSPE_ENABLE             0x0040
227 #define M3I_DOCK_ENABLE         0x0080
228 
229 #define SDO_OUT_DEST_CTRL       0x3A
230 #define COMMAND_ADDR_OUT        0x0003
231 #define PCM_LR_OUT_LOCAL        0x0000
232 #define PCM_LR_OUT_REMOTE       0x0004
233 #define PCM_LR_OUT_MUTE         0x0008
234 #define PCM_LR_OUT_BOTH         0x000C
235 #define LINE1_DAC_OUT_LOCAL     0x0000
236 #define LINE1_DAC_OUT_REMOTE    0x0010
237 #define LINE1_DAC_OUT_MUTE      0x0020
238 #define LINE1_DAC_OUT_BOTH      0x0030
239 #define PCM_CLS_OUT_LOCAL       0x0000
240 #define PCM_CLS_OUT_REMOTE      0x0040
241 #define PCM_CLS_OUT_MUTE        0x0080
242 #define PCM_CLS_OUT_BOTH        0x00C0
243 #define PCM_RLF_OUT_LOCAL       0x0000
244 #define PCM_RLF_OUT_REMOTE      0x0100
245 #define PCM_RLF_OUT_MUTE        0x0200
246 #define PCM_RLF_OUT_BOTH        0x0300
247 #define LINE2_DAC_OUT_LOCAL     0x0000
248 #define LINE2_DAC_OUT_REMOTE    0x0400
249 #define LINE2_DAC_OUT_MUTE      0x0800
250 #define LINE2_DAC_OUT_BOTH      0x0C00
251 #define HANDSET_OUT_LOCAL       0x0000
252 #define HANDSET_OUT_REMOTE      0x1000
253 #define HANDSET_OUT_MUTE        0x2000
254 #define HANDSET_OUT_BOTH        0x3000
255 #define IO_CTRL_OUT_LOCAL       0x0000
256 #define IO_CTRL_OUT_REMOTE      0x4000
257 #define IO_CTRL_OUT_MUTE        0x8000
258 #define IO_CTRL_OUT_BOTH        0xC000
259 
260 #define SDO_IN_DEST_CTRL        0x3C
261 #define STATUS_ADDR_IN          0x0003
262 #define PCM_LR_IN_LOCAL         0x0000
263 #define PCM_LR_IN_REMOTE        0x0004
264 #define PCM_LR_RESERVED         0x0008
265 #define PCM_LR_IN_BOTH          0x000C
266 #define LINE1_ADC_IN_LOCAL      0x0000
267 #define LINE1_ADC_IN_REMOTE     0x0010
268 #define LINE1_ADC_IN_MUTE       0x0020
269 #define MIC_ADC_IN_LOCAL        0x0000
270 #define MIC_ADC_IN_REMOTE       0x0040
271 #define MIC_ADC_IN_MUTE         0x0080
272 #define LINE2_DAC_IN_LOCAL      0x0000
273 #define LINE2_DAC_IN_REMOTE     0x0400
274 #define LINE2_DAC_IN_MUTE       0x0800
275 #define HANDSET_IN_LOCAL        0x0000
276 #define HANDSET_IN_REMOTE       0x1000
277 #define HANDSET_IN_MUTE         0x2000
278 #define IO_STATUS_IN_LOCAL      0x0000
279 #define IO_STATUS_IN_REMOTE     0x4000
280 
281 #define SPDIF_IN_CTRL           0x3E
282 #define SPDIF_IN_ENABLE         0x0001
283 
284 #define GPIO_DATA               0x60
285 #define GPIO_DATA_MASK          0x0FFF
286 #define GPIO_HV_STATUS          0x3000
287 #define GPIO_PME_STATUS         0x4000
288 
289 #define GPIO_MASK               0x64
290 #define GPIO_DIRECTION          0x68
291 #define GPO_PRIMARY_AC97        0x0001
292 #define GPI_LINEOUT_SENSE       0x0004
293 #define GPO_SECONDARY_AC97      0x0008
294 #define GPI_VOL_DOWN            0x0010
295 #define GPI_VOL_UP              0x0020
296 #define GPI_IIS_CLK             0x0040
297 #define GPI_IIS_LRCLK           0x0080
298 #define GPI_IIS_DATA            0x0100
299 #define GPI_DOCKING_STATUS      0x0100
300 #define GPI_HEADPHONE_SENSE     0x0200
301 #define GPO_EXT_AMP_SHUTDOWN    0x1000
302 
303 #define GPO_EXT_AMP_M3          1       /* default m3 amp */
304 #define GPO_EXT_AMP_ALLEGRO     8       /* default allegro amp */
305 
306 /* M3 */
307 #define GPO_M3_EXT_AMP_SHUTDN   0x0002
308 
309 #define ASSP_INDEX_PORT         0x80
310 #define ASSP_MEMORY_PORT        0x82
311 #define ASSP_DATA_PORT          0x84
312 
313 #define MPU401_DATA_PORT        0x98
314 #define MPU401_STATUS_PORT      0x99
315 
316 #define CLK_MULT_DATA_PORT      0x9C
317 
318 #define ASSP_CONTROL_A          0xA2
319 #define ASSP_0_WS_ENABLE        0x01
320 #define ASSP_CTRL_A_RESERVED1   0x02
321 #define ASSP_CTRL_A_RESERVED2   0x04
322 #define ASSP_CLK_49MHZ_SELECT   0x08
323 #define FAST_PLU_ENABLE         0x10
324 #define ASSP_CTRL_A_RESERVED3   0x20
325 #define DSP_CLK_36MHZ_SELECT    0x40
326 
327 #define ASSP_CONTROL_B          0xA4
328 #define RESET_ASSP              0x00
329 #define RUN_ASSP                0x01
330 #define ENABLE_ASSP_CLOCK       0x00
331 #define STOP_ASSP_CLOCK         0x10
332 #define RESET_TOGGLE            0x40
333 
334 #define ASSP_CONTROL_C          0xA6
335 #define ASSP_HOST_INT_ENABLE    0x01
336 #define FM_ADDR_REMAP_DISABLE   0x02
337 #define HOST_WRITE_PORT_ENABLE  0x08
338 
339 #define ASSP_HOST_INT_STATUS    0xAC
340 #define DSP2HOST_REQ_PIORECORD  0x01
341 #define DSP2HOST_REQ_I2SRATE    0x02
342 #define DSP2HOST_REQ_TIMER      0x04
343 
344 /*
345  * ASSP control regs
346  */
347 #define DSP_PORT_TIMER_COUNT    0x06
348 
349 #define DSP_PORT_MEMORY_INDEX   0x80
350 
351 #define DSP_PORT_MEMORY_TYPE    0x82
352 #define MEMTYPE_INTERNAL_CODE   0x0002
353 #define MEMTYPE_INTERNAL_DATA   0x0003
354 #define MEMTYPE_MASK            0x0003
355 
356 #define DSP_PORT_MEMORY_DATA    0x84
357 
358 #define DSP_PORT_CONTROL_REG_A  0xA2
359 #define DSP_PORT_CONTROL_REG_B  0xA4
360 #define DSP_PORT_CONTROL_REG_C  0xA6
361 
362 #define REV_A_CODE_MEMORY_BEGIN         0x0000
363 #define REV_A_CODE_MEMORY_END           0x0FFF
364 #define REV_A_CODE_MEMORY_UNIT_LENGTH   0x0040
365 #define REV_A_CODE_MEMORY_LENGTH        (REV_A_CODE_MEMORY_END - REV_A_CODE_MEMORY_BEGIN + 1)
366 
367 #define REV_B_CODE_MEMORY_BEGIN         0x0000
368 #define REV_B_CODE_MEMORY_END           0x0BFF
369 #define REV_B_CODE_MEMORY_UNIT_LENGTH   0x0040
370 #define REV_B_CODE_MEMORY_LENGTH        (REV_B_CODE_MEMORY_END - REV_B_CODE_MEMORY_BEGIN + 1)
371 
372 #define REV_A_DATA_MEMORY_BEGIN         0x1000
373 #define REV_A_DATA_MEMORY_END           0x2FFF
374 #define REV_A_DATA_MEMORY_UNIT_LENGTH   0x0080
375 #define REV_A_DATA_MEMORY_LENGTH        (REV_A_DATA_MEMORY_END - REV_A_DATA_MEMORY_BEGIN + 1)
376 
377 #define REV_B_DATA_MEMORY_BEGIN         0x1000
378 #define REV_B_DATA_MEMORY_END           0x2BFF
379 #define REV_B_DATA_MEMORY_UNIT_LENGTH   0x0080
380 #define REV_B_DATA_MEMORY_LENGTH        (REV_B_DATA_MEMORY_END - REV_B_DATA_MEMORY_BEGIN + 1)
381 
382 
383 #define NUM_UNITS_KERNEL_CODE          16
384 #define NUM_UNITS_KERNEL_DATA           2
385 
386 #define NUM_UNITS_KERNEL_CODE_WITH_HSP 16
387 #define NUM_UNITS_KERNEL_DATA_WITH_HSP  5
388 
389 /*
390  * Kernel data layout
391  */
392 
393 #define DP_SHIFT_COUNT                  7
394 
395 #define KDATA_BASE_ADDR                 0x1000
396 #define KDATA_BASE_ADDR2                0x1080
397 
398 #define KDATA_TASK0                     (KDATA_BASE_ADDR + 0x0000)
399 #define KDATA_TASK1                     (KDATA_BASE_ADDR + 0x0001)
400 #define KDATA_TASK2                     (KDATA_BASE_ADDR + 0x0002)
401 #define KDATA_TASK3                     (KDATA_BASE_ADDR + 0x0003)
402 #define KDATA_TASK4                     (KDATA_BASE_ADDR + 0x0004)
403 #define KDATA_TASK5                     (KDATA_BASE_ADDR + 0x0005)
404 #define KDATA_TASK6                     (KDATA_BASE_ADDR + 0x0006)
405 #define KDATA_TASK7                     (KDATA_BASE_ADDR + 0x0007)
406 #define KDATA_TASK_ENDMARK              (KDATA_BASE_ADDR + 0x0008)
407 
408 #define KDATA_CURRENT_TASK              (KDATA_BASE_ADDR + 0x0009)
409 #define KDATA_TASK_SWITCH               (KDATA_BASE_ADDR + 0x000A)
410 
411 #define KDATA_INSTANCE0_POS3D           (KDATA_BASE_ADDR + 0x000B)
412 #define KDATA_INSTANCE1_POS3D           (KDATA_BASE_ADDR + 0x000C)
413 #define KDATA_INSTANCE2_POS3D           (KDATA_BASE_ADDR + 0x000D)
414 #define KDATA_INSTANCE3_POS3D           (KDATA_BASE_ADDR + 0x000E)
415 #define KDATA_INSTANCE4_POS3D           (KDATA_BASE_ADDR + 0x000F)
416 #define KDATA_INSTANCE5_POS3D           (KDATA_BASE_ADDR + 0x0010)
417 #define KDATA_INSTANCE6_POS3D           (KDATA_BASE_ADDR + 0x0011)
418 #define KDATA_INSTANCE7_POS3D           (KDATA_BASE_ADDR + 0x0012)
419 #define KDATA_INSTANCE8_POS3D           (KDATA_BASE_ADDR + 0x0013)
420 #define KDATA_INSTANCE_POS3D_ENDMARK    (KDATA_BASE_ADDR + 0x0014)
421 
422 #define KDATA_INSTANCE0_SPKVIRT         (KDATA_BASE_ADDR + 0x0015)
423 #define KDATA_INSTANCE_SPKVIRT_ENDMARK  (KDATA_BASE_ADDR + 0x0016)
424 
425 #define KDATA_INSTANCE0_SPDIF           (KDATA_BASE_ADDR + 0x0017)
426 #define KDATA_INSTANCE_SPDIF_ENDMARK    (KDATA_BASE_ADDR + 0x0018)
427 
428 #define KDATA_INSTANCE0_MODEM           (KDATA_BASE_ADDR + 0x0019)
429 #define KDATA_INSTANCE_MODEM_ENDMARK    (KDATA_BASE_ADDR + 0x001A)
430 
431 #define KDATA_INSTANCE0_SRC             (KDATA_BASE_ADDR + 0x001B)
432 #define KDATA_INSTANCE1_SRC             (KDATA_BASE_ADDR + 0x001C)
433 #define KDATA_INSTANCE_SRC_ENDMARK      (KDATA_BASE_ADDR + 0x001D)
434 
435 #define KDATA_INSTANCE0_MINISRC         (KDATA_BASE_ADDR + 0x001E)
436 #define KDATA_INSTANCE1_MINISRC         (KDATA_BASE_ADDR + 0x001F)
437 #define KDATA_INSTANCE2_MINISRC         (KDATA_BASE_ADDR + 0x0020)
438 #define KDATA_INSTANCE3_MINISRC         (KDATA_BASE_ADDR + 0x0021)
439 #define KDATA_INSTANCE_MINISRC_ENDMARK  (KDATA_BASE_ADDR + 0x0022)
440 
441 #define KDATA_INSTANCE0_CPYTHRU         (KDATA_BASE_ADDR + 0x0023)
442 #define KDATA_INSTANCE1_CPYTHRU         (KDATA_BASE_ADDR + 0x0024)
443 #define KDATA_INSTANCE_CPYTHRU_ENDMARK  (KDATA_BASE_ADDR + 0x0025)
444 
445 #define KDATA_CURRENT_DMA               (KDATA_BASE_ADDR + 0x0026)
446 #define KDATA_DMA_SWITCH                (KDATA_BASE_ADDR + 0x0027)
447 #define KDATA_DMA_ACTIVE                (KDATA_BASE_ADDR + 0x0028)
448 
449 #define KDATA_DMA_XFER0                 (KDATA_BASE_ADDR + 0x0029)
450 #define KDATA_DMA_XFER1                 (KDATA_BASE_ADDR + 0x002A)
451 #define KDATA_DMA_XFER2                 (KDATA_BASE_ADDR + 0x002B)
452 #define KDATA_DMA_XFER3                 (KDATA_BASE_ADDR + 0x002C)
453 #define KDATA_DMA_XFER4                 (KDATA_BASE_ADDR + 0x002D)
454 #define KDATA_DMA_XFER5                 (KDATA_BASE_ADDR + 0x002E)
455 #define KDATA_DMA_XFER6                 (KDATA_BASE_ADDR + 0x002F)
456 #define KDATA_DMA_XFER7                 (KDATA_BASE_ADDR + 0x0030)
457 #define KDATA_DMA_XFER8                 (KDATA_BASE_ADDR + 0x0031)
458 #define KDATA_DMA_XFER_ENDMARK          (KDATA_BASE_ADDR + 0x0032)
459 
460 #define KDATA_I2S_SAMPLE_COUNT          (KDATA_BASE_ADDR + 0x0033)
461 #define KDATA_I2S_INT_METER             (KDATA_BASE_ADDR + 0x0034)
462 #define KDATA_I2S_ACTIVE                (KDATA_BASE_ADDR + 0x0035)
463 
464 #define KDATA_TIMER_COUNT_RELOAD        (KDATA_BASE_ADDR + 0x0036)
465 #define KDATA_TIMER_COUNT_CURRENT       (KDATA_BASE_ADDR + 0x0037)
466 
467 #define KDATA_HALT_SYNCH_CLIENT         (KDATA_BASE_ADDR + 0x0038)
468 #define KDATA_HALT_SYNCH_DMA            (KDATA_BASE_ADDR + 0x0039)
469 #define KDATA_HALT_ACKNOWLEDGE          (KDATA_BASE_ADDR + 0x003A)
470 
471 #define KDATA_ADC1_XFER0                (KDATA_BASE_ADDR + 0x003B)
472 #define KDATA_ADC1_XFER_ENDMARK         (KDATA_BASE_ADDR + 0x003C)
473 #define KDATA_ADC1_LEFT_VOLUME                  (KDATA_BASE_ADDR + 0x003D)
474 #define KDATA_ADC1_RIGHT_VOLUME                 (KDATA_BASE_ADDR + 0x003E)
475 #define KDATA_ADC1_LEFT_SUR_VOL                 (KDATA_BASE_ADDR + 0x003F)
476 #define KDATA_ADC1_RIGHT_SUR_VOL                (KDATA_BASE_ADDR + 0x0040)
477 
478 #define KDATA_ADC2_XFER0                (KDATA_BASE_ADDR + 0x0041)
479 #define KDATA_ADC2_XFER_ENDMARK         (KDATA_BASE_ADDR + 0x0042)
480 #define KDATA_ADC2_LEFT_VOLUME                  (KDATA_BASE_ADDR + 0x0043)
481 #define KDATA_ADC2_RIGHT_VOLUME                 (KDATA_BASE_ADDR + 0x0044)
482 #define KDATA_ADC2_LEFT_SUR_VOL                 (KDATA_BASE_ADDR + 0x0045)
483 #define KDATA_ADC2_RIGHT_SUR_VOL                (KDATA_BASE_ADDR + 0x0046)
484 
485 #define KDATA_CD_XFER0                                  (KDATA_BASE_ADDR + 0x0047)                                      
486 #define KDATA_CD_XFER_ENDMARK                   (KDATA_BASE_ADDR + 0x0048)
487 #define KDATA_CD_LEFT_VOLUME                    (KDATA_BASE_ADDR + 0x0049)
488 #define KDATA_CD_RIGHT_VOLUME                   (KDATA_BASE_ADDR + 0x004A)
489 #define KDATA_CD_LEFT_SUR_VOL                   (KDATA_BASE_ADDR + 0x004B)
490 #define KDATA_CD_RIGHT_SUR_VOL                  (KDATA_BASE_ADDR + 0x004C)
491 
492 #define KDATA_MIC_XFER0                                 (KDATA_BASE_ADDR + 0x004D)
493 #define KDATA_MIC_XFER_ENDMARK                  (KDATA_BASE_ADDR + 0x004E)
494 #define KDATA_MIC_VOLUME                                (KDATA_BASE_ADDR + 0x004F)
495 #define KDATA_MIC_SUR_VOL                               (KDATA_BASE_ADDR + 0x0050)
496 
497 #define KDATA_I2S_XFER0                 (KDATA_BASE_ADDR + 0x0051)
498 #define KDATA_I2S_XFER_ENDMARK          (KDATA_BASE_ADDR + 0x0052)
499 
500 #define KDATA_CHI_XFER0                 (KDATA_BASE_ADDR + 0x0053)
501 #define KDATA_CHI_XFER_ENDMARK          (KDATA_BASE_ADDR + 0x0054)
502 
503 #define KDATA_SPDIF_XFER                (KDATA_BASE_ADDR + 0x0055)
504 #define KDATA_SPDIF_CURRENT_FRAME       (KDATA_BASE_ADDR + 0x0056)
505 #define KDATA_SPDIF_FRAME0              (KDATA_BASE_ADDR + 0x0057)
506 #define KDATA_SPDIF_FRAME1              (KDATA_BASE_ADDR + 0x0058)
507 #define KDATA_SPDIF_FRAME2              (KDATA_BASE_ADDR + 0x0059)
508 
509 #define KDATA_SPDIF_REQUEST             (KDATA_BASE_ADDR + 0x005A)
510 #define KDATA_SPDIF_TEMP                (KDATA_BASE_ADDR + 0x005B)
511 
512 #define KDATA_SPDIFIN_XFER0             (KDATA_BASE_ADDR + 0x005C)
513 #define KDATA_SPDIFIN_XFER_ENDMARK      (KDATA_BASE_ADDR + 0x005D)
514 #define KDATA_SPDIFIN_INT_METER         (KDATA_BASE_ADDR + 0x005E)
515 
516 #define KDATA_DSP_RESET_COUNT           (KDATA_BASE_ADDR + 0x005F)
517 #define KDATA_DEBUG_OUTPUT              (KDATA_BASE_ADDR + 0x0060)
518 
519 #define KDATA_KERNEL_ISR_LIST           (KDATA_BASE_ADDR + 0x0061)
520 
521 #define KDATA_KERNEL_ISR_CBSR1          (KDATA_BASE_ADDR + 0x0062)
522 #define KDATA_KERNEL_ISR_CBER1          (KDATA_BASE_ADDR + 0x0063)
523 #define KDATA_KERNEL_ISR_CBCR           (KDATA_BASE_ADDR + 0x0064)
524 #define KDATA_KERNEL_ISR_AR0            (KDATA_BASE_ADDR + 0x0065)
525 #define KDATA_KERNEL_ISR_AR1            (KDATA_BASE_ADDR + 0x0066)
526 #define KDATA_KERNEL_ISR_AR2            (KDATA_BASE_ADDR + 0x0067)
527 #define KDATA_KERNEL_ISR_AR3            (KDATA_BASE_ADDR + 0x0068)
528 #define KDATA_KERNEL_ISR_AR4            (KDATA_BASE_ADDR + 0x0069)
529 #define KDATA_KERNEL_ISR_AR5            (KDATA_BASE_ADDR + 0x006A)
530 #define KDATA_KERNEL_ISR_BRCR           (KDATA_BASE_ADDR + 0x006B)
531 #define KDATA_KERNEL_ISR_PASR           (KDATA_BASE_ADDR + 0x006C)
532 #define KDATA_KERNEL_ISR_PAER           (KDATA_BASE_ADDR + 0x006D)
533 
534 #define KDATA_CLIENT_SCRATCH0           (KDATA_BASE_ADDR + 0x006E)
535 #define KDATA_CLIENT_SCRATCH1           (KDATA_BASE_ADDR + 0x006F)
536 #define KDATA_KERNEL_SCRATCH            (KDATA_BASE_ADDR + 0x0070)
537 #define KDATA_KERNEL_ISR_SCRATCH        (KDATA_BASE_ADDR + 0x0071)
538 
539 #define KDATA_OUEUE_LEFT                (KDATA_BASE_ADDR + 0x0072)
540 #define KDATA_QUEUE_RIGHT               (KDATA_BASE_ADDR + 0x0073)
541 
542 #define KDATA_ADC1_REQUEST              (KDATA_BASE_ADDR + 0x0074)
543 #define KDATA_ADC2_REQUEST              (KDATA_BASE_ADDR + 0x0075)
544 #define KDATA_CD_REQUEST                                (KDATA_BASE_ADDR + 0x0076)
545 #define KDATA_MIC_REQUEST                               (KDATA_BASE_ADDR + 0x0077)
546 
547 #define KDATA_ADC1_MIXER_REQUEST        (KDATA_BASE_ADDR + 0x0078)
548 #define KDATA_ADC2_MIXER_REQUEST        (KDATA_BASE_ADDR + 0x0079)
549 #define KDATA_CD_MIXER_REQUEST                  (KDATA_BASE_ADDR + 0x007A)
550 #define KDATA_MIC_MIXER_REQUEST                 (KDATA_BASE_ADDR + 0x007B)
551 #define KDATA_MIC_SYNC_COUNTER                  (KDATA_BASE_ADDR + 0x007C)
552 
553 /*
554  * second 'segment' (?) reserved for mixer
555  * buffers..
556  */
557 
558 #define KDATA_MIXER_WORD0               (KDATA_BASE_ADDR2 + 0x0000)
559 #define KDATA_MIXER_WORD1               (KDATA_BASE_ADDR2 + 0x0001)
560 #define KDATA_MIXER_WORD2               (KDATA_BASE_ADDR2 + 0x0002)
561 #define KDATA_MIXER_WORD3               (KDATA_BASE_ADDR2 + 0x0003)
562 #define KDATA_MIXER_WORD4               (KDATA_BASE_ADDR2 + 0x0004)
563 #define KDATA_MIXER_WORD5               (KDATA_BASE_ADDR2 + 0x0005)
564 #define KDATA_MIXER_WORD6               (KDATA_BASE_ADDR2 + 0x0006)
565 #define KDATA_MIXER_WORD7               (KDATA_BASE_ADDR2 + 0x0007)
566 #define KDATA_MIXER_WORD8               (KDATA_BASE_ADDR2 + 0x0008)
567 #define KDATA_MIXER_WORD9               (KDATA_BASE_ADDR2 + 0x0009)
568 #define KDATA_MIXER_WORDA               (KDATA_BASE_ADDR2 + 0x000A)
569 #define KDATA_MIXER_WORDB               (KDATA_BASE_ADDR2 + 0x000B)
570 #define KDATA_MIXER_WORDC               (KDATA_BASE_ADDR2 + 0x000C)
571 #define KDATA_MIXER_WORDD               (KDATA_BASE_ADDR2 + 0x000D)
572 #define KDATA_MIXER_WORDE               (KDATA_BASE_ADDR2 + 0x000E)
573 #define KDATA_MIXER_WORDF               (KDATA_BASE_ADDR2 + 0x000F)
574 
575 #define KDATA_MIXER_XFER0               (KDATA_BASE_ADDR2 + 0x0010)
576 #define KDATA_MIXER_XFER1               (KDATA_BASE_ADDR2 + 0x0011)
577 #define KDATA_MIXER_XFER2               (KDATA_BASE_ADDR2 + 0x0012)
578 #define KDATA_MIXER_XFER3               (KDATA_BASE_ADDR2 + 0x0013)
579 #define KDATA_MIXER_XFER4               (KDATA_BASE_ADDR2 + 0x0014)
580 #define KDATA_MIXER_XFER5               (KDATA_BASE_ADDR2 + 0x0015)
581 #define KDATA_MIXER_XFER6               (KDATA_BASE_ADDR2 + 0x0016)
582 #define KDATA_MIXER_XFER7               (KDATA_BASE_ADDR2 + 0x0017)
583 #define KDATA_MIXER_XFER8               (KDATA_BASE_ADDR2 + 0x0018)
584 #define KDATA_MIXER_XFER9               (KDATA_BASE_ADDR2 + 0x0019)
585 #define KDATA_MIXER_XFER_ENDMARK        (KDATA_BASE_ADDR2 + 0x001A)
586 
587 #define KDATA_MIXER_TASK_NUMBER         (KDATA_BASE_ADDR2 + 0x001B)
588 #define KDATA_CURRENT_MIXER             (KDATA_BASE_ADDR2 + 0x001C)
589 #define KDATA_MIXER_ACTIVE              (KDATA_BASE_ADDR2 + 0x001D)
590 #define KDATA_MIXER_BANK_STATUS         (KDATA_BASE_ADDR2 + 0x001E)
591 #define KDATA_DAC_LEFT_VOLUME           (KDATA_BASE_ADDR2 + 0x001F)
592 #define KDATA_DAC_RIGHT_VOLUME          (KDATA_BASE_ADDR2 + 0x0020)
593 
594 #define MAX_INSTANCE_MINISRC            (KDATA_INSTANCE_MINISRC_ENDMARK - KDATA_INSTANCE0_MINISRC)
595 #define MAX_VIRTUAL_DMA_CHANNELS        (KDATA_DMA_XFER_ENDMARK - KDATA_DMA_XFER0)
596 #define MAX_VIRTUAL_MIXER_CHANNELS      (KDATA_MIXER_XFER_ENDMARK - KDATA_MIXER_XFER0)
597 #define MAX_VIRTUAL_ADC1_CHANNELS       (KDATA_ADC1_XFER_ENDMARK - KDATA_ADC1_XFER0)
598 
599 /*
600  * client data area offsets
601  */
602 #define CDATA_INSTANCE_READY            0x00
603 
604 #define CDATA_HOST_SRC_ADDRL            0x01
605 #define CDATA_HOST_SRC_ADDRH            0x02
606 #define CDATA_HOST_SRC_END_PLUS_1L      0x03
607 #define CDATA_HOST_SRC_END_PLUS_1H      0x04
608 #define CDATA_HOST_SRC_CURRENTL         0x05
609 #define CDATA_HOST_SRC_CURRENTH         0x06
610 
611 #define CDATA_IN_BUF_CONNECT            0x07
612 #define CDATA_OUT_BUF_CONNECT           0x08
613 
614 #define CDATA_IN_BUF_BEGIN              0x09
615 #define CDATA_IN_BUF_END_PLUS_1         0x0A
616 #define CDATA_IN_BUF_HEAD               0x0B
617 #define CDATA_IN_BUF_TAIL               0x0C
618 #define CDATA_OUT_BUF_BEGIN             0x0D
619 #define CDATA_OUT_BUF_END_PLUS_1        0x0E
620 #define CDATA_OUT_BUF_HEAD              0x0F
621 #define CDATA_OUT_BUF_TAIL              0x10
622 
623 #define CDATA_DMA_CONTROL               0x11
624 #define CDATA_RESERVED                  0x12
625 
626 #define CDATA_FREQUENCY                 0x13
627 #define CDATA_LEFT_VOLUME               0x14
628 #define CDATA_RIGHT_VOLUME              0x15
629 #define CDATA_LEFT_SUR_VOL              0x16
630 #define CDATA_RIGHT_SUR_VOL             0x17
631 
632 #define CDATA_HEADER_LEN                0x18
633 
634 #define SRC3_DIRECTION_OFFSET           CDATA_HEADER_LEN
635 #define SRC3_MODE_OFFSET                (CDATA_HEADER_LEN + 1)
636 #define SRC3_WORD_LENGTH_OFFSET         (CDATA_HEADER_LEN + 2)
637 #define SRC3_PARAMETER_OFFSET           (CDATA_HEADER_LEN + 3)
638 #define SRC3_COEFF_ADDR_OFFSET          (CDATA_HEADER_LEN + 8)
639 #define SRC3_FILTAP_ADDR_OFFSET         (CDATA_HEADER_LEN + 10)
640 #define SRC3_TEMP_INBUF_ADDR_OFFSET     (CDATA_HEADER_LEN + 16)
641 #define SRC3_TEMP_OUTBUF_ADDR_OFFSET    (CDATA_HEADER_LEN + 17)
642 
643 #define MINISRC_IN_BUFFER_SIZE   ( 0x50 * 2 )
644 #define MINISRC_OUT_BUFFER_SIZE  ( 0x50 * 2 * 2)
645 #define MINISRC_TMP_BUFFER_SIZE  ( 112 + ( MINISRC_BIQUAD_STAGE * 3 + 4 ) * 2 * 2 )
646 #define MINISRC_BIQUAD_STAGE    2
647 #define MINISRC_COEF_LOC          0x175
648 
649 #define DMACONTROL_BLOCK_MASK           0x000F
650 #define  DMAC_BLOCK0_SELECTOR           0x0000
651 #define  DMAC_BLOCK1_SELECTOR           0x0001
652 #define  DMAC_BLOCK2_SELECTOR           0x0002
653 #define  DMAC_BLOCK3_SELECTOR           0x0003
654 #define  DMAC_BLOCK4_SELECTOR           0x0004
655 #define  DMAC_BLOCK5_SELECTOR           0x0005
656 #define  DMAC_BLOCK6_SELECTOR           0x0006
657 #define  DMAC_BLOCK7_SELECTOR           0x0007
658 #define  DMAC_BLOCK8_SELECTOR           0x0008
659 #define  DMAC_BLOCK9_SELECTOR           0x0009
660 #define  DMAC_BLOCKA_SELECTOR           0x000A
661 #define  DMAC_BLOCKB_SELECTOR           0x000B
662 #define  DMAC_BLOCKC_SELECTOR           0x000C
663 #define  DMAC_BLOCKD_SELECTOR           0x000D
664 #define  DMAC_BLOCKE_SELECTOR           0x000E
665 #define  DMAC_BLOCKF_SELECTOR           0x000F
666 #define DMACONTROL_PAGE_MASK            0x00F0
667 #define  DMAC_PAGE0_SELECTOR            0x0030
668 #define  DMAC_PAGE1_SELECTOR            0x0020
669 #define  DMAC_PAGE2_SELECTOR            0x0010
670 #define  DMAC_PAGE3_SELECTOR            0x0000
671 #define DMACONTROL_AUTOREPEAT           0x1000
672 #define DMACONTROL_STOPPED              0x2000
673 #define DMACONTROL_DIRECTION            0x0100
674 
675 /*
676  * an arbitrary volume we set the internal
677  * volume settings to so that the ac97 volume
678  * range is a little less insane.  0x7fff is 
679  * max.
680  */
681 #define ARB_VOLUME ( 0x6800 )
682 
683 /*
684  */
685 
686 struct m3_list {
687         int curlen;
688         int mem_addr;
689         int max;
690 };
691 
692 struct m3_dma {
693 
694         int number;
695         struct snd_pcm_substream *substream;
696 
697         struct assp_instance {
698                 unsigned short code, data;
699         } inst;
700 
701         int running;
702         int opened;
703 
704         unsigned long buffer_addr;
705         int dma_size;
706         int period_size;
707         unsigned int hwptr;
708         int count;
709 
710         int index[3];
711         struct m3_list *index_list[3];
712 
713         int in_lists;
714         
715         struct list_head list;
716 
717 };
718     
719 struct snd_m3 {
720         
721         struct snd_card *card;
722 
723         unsigned long iobase;
724 
725         int irq;
726         unsigned int allegro_flag : 1;
727 
728         struct snd_ac97 *ac97;
729 
730         struct snd_pcm *pcm;
731 
732         struct pci_dev *pci;
733 
734         int dacs_active;
735         int timer_users;
736 
737         struct m3_list  msrc_list;
738         struct m3_list  mixer_list;
739         struct m3_list  adc1_list;
740         struct m3_list  dma_list;
741 
742         /* for storing reset state..*/
743         u8 reset_state;
744 
745         int external_amp;
746         int amp_gpio;   /* gpio pin #  for external amp, -1 = default */
747         unsigned int hv_config;         /* hardware-volume config bits */
748         unsigned irda_workaround :1;    /* avoid to touch 0x10 on GPIO_DIRECTION
749                                            (e.g. for IrDA on Dell Inspirons) */
750         unsigned is_omnibook :1;        /* Do HP OmniBook GPIO magic? */
751 
752         /* midi */
753         struct snd_rawmidi *rmidi;
754 
755         /* pcm streams */
756         int num_substreams;
757         struct m3_dma *substreams;
758 
759         spinlock_t reg_lock;
760 
761 #ifdef CONFIG_SND_MAESTRO3_INPUT
762         struct input_dev *input_dev;
763         char phys[64];                  /* physical device path */
764 #else
765         struct snd_kcontrol *master_switch;
766         struct snd_kcontrol *master_volume;
767 #endif
768         struct work_struct hwvol_work;
769 
770         unsigned int in_suspend;
771 
772         u16 *suspend_mem;
773 
774         const struct firmware *assp_kernel_image;
775         const struct firmware *assp_minisrc_image;
776 };
777 
778 /*
779  * pci ids
780  */
781 static const struct pci_device_id snd_m3_ids[] = {
782         {PCI_VENDOR_ID_ESS, PCI_DEVICE_ID_ESS_ALLEGRO_1, PCI_ANY_ID, PCI_ANY_ID,
783          PCI_CLASS_MULTIMEDIA_AUDIO << 8, 0xffff00, 0},
784         {PCI_VENDOR_ID_ESS, PCI_DEVICE_ID_ESS_ALLEGRO, PCI_ANY_ID, PCI_ANY_ID,
785          PCI_CLASS_MULTIMEDIA_AUDIO << 8, 0xffff00, 0},
786         {PCI_VENDOR_ID_ESS, PCI_DEVICE_ID_ESS_CANYON3D_2LE, PCI_ANY_ID, PCI_ANY_ID,
787          PCI_CLASS_MULTIMEDIA_AUDIO << 8, 0xffff00, 0},
788         {PCI_VENDOR_ID_ESS, PCI_DEVICE_ID_ESS_CANYON3D_2, PCI_ANY_ID, PCI_ANY_ID,
789          PCI_CLASS_MULTIMEDIA_AUDIO << 8, 0xffff00, 0},
790         {PCI_VENDOR_ID_ESS, PCI_DEVICE_ID_ESS_MAESTRO3, PCI_ANY_ID, PCI_ANY_ID,
791          PCI_CLASS_MULTIMEDIA_AUDIO << 8, 0xffff00, 0},
792         {PCI_VENDOR_ID_ESS, PCI_DEVICE_ID_ESS_MAESTRO3_1, PCI_ANY_ID, PCI_ANY_ID,
793          PCI_CLASS_MULTIMEDIA_AUDIO << 8, 0xffff00, 0},
794         {PCI_VENDOR_ID_ESS, PCI_DEVICE_ID_ESS_MAESTRO3_HW, PCI_ANY_ID, PCI_ANY_ID,
795          PCI_CLASS_MULTIMEDIA_AUDIO << 8, 0xffff00, 0},
796         {PCI_VENDOR_ID_ESS, PCI_DEVICE_ID_ESS_MAESTRO3_2, PCI_ANY_ID, PCI_ANY_ID,
797          PCI_CLASS_MULTIMEDIA_AUDIO << 8, 0xffff00, 0},
798         {0,},
799 };
800 
801 MODULE_DEVICE_TABLE(pci, snd_m3_ids);
802 
803 static const struct snd_pci_quirk m3_amp_quirk_list[] = {
804         SND_PCI_QUIRK(0x0E11, 0x0094, "Compaq Evo N600c", 0x0c),
805         SND_PCI_QUIRK(0x10f7, 0x833e, "Panasonic CF-28", 0x0d),
806         SND_PCI_QUIRK(0x10f7, 0x833d, "Panasonic CF-72", 0x0d),
807         SND_PCI_QUIRK(0x1033, 0x80f1, "NEC LM800J/7", 0x03),
808         SND_PCI_QUIRK(0x1509, 0x1740, "LEGEND ZhaoYang 3100CF", 0x03),
809         { } /* END */
810 };
811 
812 static const struct snd_pci_quirk m3_irda_quirk_list[] = {
813         SND_PCI_QUIRK(0x1028, 0x00b0, "Dell Inspiron 4000", 1),
814         SND_PCI_QUIRK(0x1028, 0x00a4, "Dell Inspiron 8000", 1),
815         SND_PCI_QUIRK(0x1028, 0x00e6, "Dell Inspiron 8100", 1),
816         { } /* END */
817 };
818 
819 /* hardware volume quirks */
820 static const struct snd_pci_quirk m3_hv_quirk_list[] = {
821         /* Allegro chips */
822         SND_PCI_QUIRK(0x0E11, 0x002E, NULL, HV_CTRL_ENABLE | HV_BUTTON_FROM_GD),
823         SND_PCI_QUIRK(0x0E11, 0x0094, NULL, HV_CTRL_ENABLE | HV_BUTTON_FROM_GD),
824         SND_PCI_QUIRK(0x0E11, 0xB112, NULL, HV_CTRL_ENABLE | HV_BUTTON_FROM_GD),
825         SND_PCI_QUIRK(0x0E11, 0xB114, NULL, HV_CTRL_ENABLE | HV_BUTTON_FROM_GD),
826         SND_PCI_QUIRK(0x103C, 0x0012, NULL, HV_CTRL_ENABLE | HV_BUTTON_FROM_GD),
827         SND_PCI_QUIRK(0x103C, 0x0018, NULL, HV_CTRL_ENABLE | HV_BUTTON_FROM_GD),
828         SND_PCI_QUIRK(0x103C, 0x001C, NULL, HV_CTRL_ENABLE | HV_BUTTON_FROM_GD),
829         SND_PCI_QUIRK(0x103C, 0x001D, NULL, HV_CTRL_ENABLE | HV_BUTTON_FROM_GD),
830         SND_PCI_QUIRK(0x103C, 0x001E, NULL, HV_CTRL_ENABLE | HV_BUTTON_FROM_GD),
831         SND_PCI_QUIRK(0x107B, 0x3350, NULL, HV_CTRL_ENABLE | HV_BUTTON_FROM_GD),
832         SND_PCI_QUIRK(0x10F7, 0x8338, NULL, HV_CTRL_ENABLE | HV_BUTTON_FROM_GD),
833         SND_PCI_QUIRK(0x10F7, 0x833C, NULL, HV_CTRL_ENABLE | HV_BUTTON_FROM_GD),
834         SND_PCI_QUIRK(0x10F7, 0x833D, NULL, HV_CTRL_ENABLE | HV_BUTTON_FROM_GD),
835         SND_PCI_QUIRK(0x10F7, 0x833E, NULL, HV_CTRL_ENABLE | HV_BUTTON_FROM_GD),
836         SND_PCI_QUIRK(0x10F7, 0x833F, NULL, HV_CTRL_ENABLE | HV_BUTTON_FROM_GD),
837         SND_PCI_QUIRK(0x13BD, 0x1018, NULL, HV_CTRL_ENABLE | HV_BUTTON_FROM_GD),
838         SND_PCI_QUIRK(0x13BD, 0x1019, NULL, HV_CTRL_ENABLE | HV_BUTTON_FROM_GD),
839         SND_PCI_QUIRK(0x13BD, 0x101A, NULL, HV_CTRL_ENABLE | HV_BUTTON_FROM_GD),
840         SND_PCI_QUIRK(0x14FF, 0x0F03, NULL, HV_CTRL_ENABLE | HV_BUTTON_FROM_GD),
841         SND_PCI_QUIRK(0x14FF, 0x0F04, NULL, HV_CTRL_ENABLE | HV_BUTTON_FROM_GD),
842         SND_PCI_QUIRK(0x14FF, 0x0F05, NULL, HV_CTRL_ENABLE | HV_BUTTON_FROM_GD),
843         SND_PCI_QUIRK(0x156D, 0xB400, NULL, HV_CTRL_ENABLE | HV_BUTTON_FROM_GD),
844         SND_PCI_QUIRK(0x156D, 0xB795, NULL, HV_CTRL_ENABLE | HV_BUTTON_FROM_GD),
845         SND_PCI_QUIRK(0x156D, 0xB797, NULL, HV_CTRL_ENABLE | HV_BUTTON_FROM_GD),
846         SND_PCI_QUIRK(0x156D, 0xC700, NULL, HV_CTRL_ENABLE | HV_BUTTON_FROM_GD),
847         SND_PCI_QUIRK(0x1033, 0x80F1, NULL,
848                       HV_CTRL_ENABLE | HV_BUTTON_FROM_GD | REDUCED_DEBOUNCE),
849         SND_PCI_QUIRK(0x103C, 0x001A, NULL, /* HP OmniBook 6100 */
850                       HV_CTRL_ENABLE | HV_BUTTON_FROM_GD | REDUCED_DEBOUNCE),
851         SND_PCI_QUIRK(0x107B, 0x340A, NULL,
852                       HV_CTRL_ENABLE | HV_BUTTON_FROM_GD | REDUCED_DEBOUNCE),
853         SND_PCI_QUIRK(0x107B, 0x3450, NULL,
854                       HV_CTRL_ENABLE | HV_BUTTON_FROM_GD | REDUCED_DEBOUNCE),
855         SND_PCI_QUIRK(0x109F, 0x3134, NULL,
856                       HV_CTRL_ENABLE | HV_BUTTON_FROM_GD | REDUCED_DEBOUNCE),
857         SND_PCI_QUIRK(0x109F, 0x3161, NULL,
858                       HV_CTRL_ENABLE | HV_BUTTON_FROM_GD | REDUCED_DEBOUNCE),
859         SND_PCI_QUIRK(0x144D, 0x3280, NULL,
860                       HV_CTRL_ENABLE | HV_BUTTON_FROM_GD | REDUCED_DEBOUNCE),
861         SND_PCI_QUIRK(0x144D, 0x3281, NULL,
862                       HV_CTRL_ENABLE | HV_BUTTON_FROM_GD | REDUCED_DEBOUNCE),
863         SND_PCI_QUIRK(0x144D, 0xC002, NULL,
864                       HV_CTRL_ENABLE | HV_BUTTON_FROM_GD | REDUCED_DEBOUNCE),
865         SND_PCI_QUIRK(0x144D, 0xC003, NULL,
866                       HV_CTRL_ENABLE | HV_BUTTON_FROM_GD | REDUCED_DEBOUNCE),
867         SND_PCI_QUIRK(0x1509, 0x1740, NULL,
868                       HV_CTRL_ENABLE | HV_BUTTON_FROM_GD | REDUCED_DEBOUNCE),
869         SND_PCI_QUIRK(0x1610, 0x0010, NULL,
870                       HV_CTRL_ENABLE | HV_BUTTON_FROM_GD | REDUCED_DEBOUNCE),
871         SND_PCI_QUIRK(0x1042, 0x1042, NULL, HV_CTRL_ENABLE),
872         SND_PCI_QUIRK(0x107B, 0x9500, NULL, HV_CTRL_ENABLE),
873         SND_PCI_QUIRK(0x14FF, 0x0F06, NULL, HV_CTRL_ENABLE),
874         SND_PCI_QUIRK(0x1558, 0x8586, NULL, HV_CTRL_ENABLE),
875         SND_PCI_QUIRK(0x161F, 0x2011, NULL, HV_CTRL_ENABLE),
876         /* Maestro3 chips */
877         SND_PCI_QUIRK(0x103C, 0x000E, NULL, HV_CTRL_ENABLE),
878         SND_PCI_QUIRK(0x103C, 0x0010, NULL, HV_CTRL_ENABLE),
879         SND_PCI_QUIRK(0x103C, 0x0011, NULL, HV_CTRL_ENABLE),
880         SND_PCI_QUIRK(0x103C, 0x001B, NULL, HV_CTRL_ENABLE),
881         SND_PCI_QUIRK(0x104D, 0x80A6, NULL, HV_CTRL_ENABLE),
882         SND_PCI_QUIRK(0x104D, 0x80AA, NULL, HV_CTRL_ENABLE),
883         SND_PCI_QUIRK(0x107B, 0x5300, NULL, HV_CTRL_ENABLE),
884         SND_PCI_QUIRK(0x110A, 0x1998, NULL, HV_CTRL_ENABLE),
885         SND_PCI_QUIRK(0x13BD, 0x1015, NULL, HV_CTRL_ENABLE),
886         SND_PCI_QUIRK(0x13BD, 0x101C, NULL, HV_CTRL_ENABLE),
887         SND_PCI_QUIRK(0x13BD, 0x1802, NULL, HV_CTRL_ENABLE),
888         SND_PCI_QUIRK(0x1599, 0x0715, NULL, HV_CTRL_ENABLE),
889         SND_PCI_QUIRK(0x5643, 0x5643, NULL, HV_CTRL_ENABLE),
890         SND_PCI_QUIRK(0x144D, 0x3260, NULL, HV_CTRL_ENABLE | REDUCED_DEBOUNCE),
891         SND_PCI_QUIRK(0x144D, 0x3261, NULL, HV_CTRL_ENABLE | REDUCED_DEBOUNCE),
892         SND_PCI_QUIRK(0x144D, 0xC000, NULL, HV_CTRL_ENABLE | REDUCED_DEBOUNCE),
893         SND_PCI_QUIRK(0x144D, 0xC001, NULL, HV_CTRL_ENABLE | REDUCED_DEBOUNCE),
894         { } /* END */
895 };
896 
897 /* HP Omnibook quirks */
898 static const struct snd_pci_quirk m3_omnibook_quirk_list[] = {
899         SND_PCI_QUIRK_ID(0x103c, 0x0010), /* HP OmniBook 6000 */
900         SND_PCI_QUIRK_ID(0x103c, 0x0011), /* HP OmniBook 500 */
901         { } /* END */
902 };
903 
904 /*
905  * lowlevel functions
906  */
907 
908 static inline void snd_m3_outw(struct snd_m3 *chip, u16 value, unsigned long reg)
909 {
910         outw(value, chip->iobase + reg);
911 }
912 
913 static inline u16 snd_m3_inw(struct snd_m3 *chip, unsigned long reg)
914 {
915         return inw(chip->iobase + reg);
916 }
917 
918 static inline void snd_m3_outb(struct snd_m3 *chip, u8 value, unsigned long reg)
919 {
920         outb(value, chip->iobase + reg);
921 }
922 
923 static inline u8 snd_m3_inb(struct snd_m3 *chip, unsigned long reg)
924 {
925         return inb(chip->iobase + reg);
926 }
927 
928 /*
929  * access 16bit words to the code or data regions of the dsp's memory.
930  * index addresses 16bit words.
931  */
932 static u16 snd_m3_assp_read(struct snd_m3 *chip, u16 region, u16 index)
933 {
934         snd_m3_outw(chip, region & MEMTYPE_MASK, DSP_PORT_MEMORY_TYPE);
935         snd_m3_outw(chip, index, DSP_PORT_MEMORY_INDEX);
936         return snd_m3_inw(chip, DSP_PORT_MEMORY_DATA);
937 }
938 
939 static void snd_m3_assp_write(struct snd_m3 *chip, u16 region, u16 index, u16 data)
940 {
941         snd_m3_outw(chip, region & MEMTYPE_MASK, DSP_PORT_MEMORY_TYPE);
942         snd_m3_outw(chip, index, DSP_PORT_MEMORY_INDEX);
943         snd_m3_outw(chip, data, DSP_PORT_MEMORY_DATA);
944 }
945 
946 static void snd_m3_assp_halt(struct snd_m3 *chip)
947 {
948         chip->reset_state = snd_m3_inb(chip, DSP_PORT_CONTROL_REG_B) & ~REGB_STOP_CLOCK;
949         msleep(10);
950         snd_m3_outb(chip, chip->reset_state & ~REGB_ENABLE_RESET, DSP_PORT_CONTROL_REG_B);
951 }
952 
953 static void snd_m3_assp_continue(struct snd_m3 *chip)
954 {
955         snd_m3_outb(chip, chip->reset_state | REGB_ENABLE_RESET, DSP_PORT_CONTROL_REG_B);
956 }
957 
958 
959 /*
960  * This makes me sad. the maestro3 has lists
961  * internally that must be packed.. 0 terminates,
962  * apparently, or maybe all unused entries have
963  * to be 0, the lists have static lengths set
964  * by the binary code images.
965  */
966 
967 static int snd_m3_add_list(struct snd_m3 *chip, struct m3_list *list, u16 val)
968 {
969         snd_m3_assp_write(chip, MEMTYPE_INTERNAL_DATA,
970                           list->mem_addr + list->curlen,
971                           val);
972         return list->curlen++;
973 }
974 
975 static void snd_m3_remove_list(struct snd_m3 *chip, struct m3_list *list, int index)
976 {
977         u16  val;
978         int lastindex = list->curlen - 1;
979 
980         if (index != lastindex) {
981                 val = snd_m3_assp_read(chip, MEMTYPE_INTERNAL_DATA,
982                                        list->mem_addr + lastindex);
983                 snd_m3_assp_write(chip, MEMTYPE_INTERNAL_DATA,
984                                   list->mem_addr + index,
985                                   val);
986         }
987 
988         snd_m3_assp_write(chip, MEMTYPE_INTERNAL_DATA,
989                           list->mem_addr + lastindex,
990                           0);
991 
992         list->curlen--;
993 }
994 
995 static void snd_m3_inc_timer_users(struct snd_m3 *chip)
996 {
997         chip->timer_users++;
998         if (chip->timer_users != 1) 
999                 return;
1000 
1001         snd_m3_assp_write(chip, MEMTYPE_INTERNAL_DATA,
1002                           KDATA_TIMER_COUNT_RELOAD,
1003                           240);
1004 
1005         snd_m3_assp_write(chip, MEMTYPE_INTERNAL_DATA,
1006                           KDATA_TIMER_COUNT_CURRENT,
1007                           240);
1008 
1009         snd_m3_outw(chip,
1010                     snd_m3_inw(chip, HOST_INT_CTRL) | CLKRUN_GEN_ENABLE,
1011                     HOST_INT_CTRL);
1012 }
1013 
1014 static void snd_m3_dec_timer_users(struct snd_m3 *chip)
1015 {
1016         chip->timer_users--;
1017         if (chip->timer_users > 0)  
1018                 return;
1019 
1020         snd_m3_assp_write(chip, MEMTYPE_INTERNAL_DATA,
1021                           KDATA_TIMER_COUNT_RELOAD,
1022                           0);
1023 
1024         snd_m3_assp_write(chip, MEMTYPE_INTERNAL_DATA,
1025                           KDATA_TIMER_COUNT_CURRENT,
1026                           0);
1027 
1028         snd_m3_outw(chip,
1029                     snd_m3_inw(chip, HOST_INT_CTRL) & ~CLKRUN_GEN_ENABLE,
1030                     HOST_INT_CTRL);
1031 }
1032 
1033 /*
1034  * start/stop
1035  */
1036 
1037 /* spinlock held! */
1038 static int snd_m3_pcm_start(struct snd_m3 *chip, struct m3_dma *s,
1039                             struct snd_pcm_substream *subs)
1040 {
1041         if (! s || ! subs)
1042                 return -EINVAL;
1043 
1044         snd_m3_inc_timer_users(chip);
1045         switch (subs->stream) {
1046         case SNDRV_PCM_STREAM_PLAYBACK:
1047                 chip->dacs_active++;
1048                 snd_m3_assp_write(chip, MEMTYPE_INTERNAL_DATA,
1049                                   s->inst.data + CDATA_INSTANCE_READY, 1);
1050                 snd_m3_assp_write(chip, MEMTYPE_INTERNAL_DATA,
1051                                   KDATA_MIXER_TASK_NUMBER,
1052                                   chip->dacs_active);
1053                 break;
1054         case SNDRV_PCM_STREAM_CAPTURE:
1055                 snd_m3_assp_write(chip, MEMTYPE_INTERNAL_DATA,
1056                                   KDATA_ADC1_REQUEST, 1);
1057                 snd_m3_assp_write(chip, MEMTYPE_INTERNAL_DATA,
1058                                   s->inst.data + CDATA_INSTANCE_READY, 1);
1059                 break;
1060         }
1061         return 0;
1062 }
1063 
1064 /* spinlock held! */
1065 static int snd_m3_pcm_stop(struct snd_m3 *chip, struct m3_dma *s,
1066                            struct snd_pcm_substream *subs)
1067 {
1068         if (! s || ! subs)
1069                 return -EINVAL;
1070 
1071         snd_m3_assp_write(chip, MEMTYPE_INTERNAL_DATA,
1072                           s->inst.data + CDATA_INSTANCE_READY, 0);
1073         snd_m3_dec_timer_users(chip);
1074         switch (subs->stream) {
1075         case SNDRV_PCM_STREAM_PLAYBACK:
1076                 chip->dacs_active--;
1077                 snd_m3_assp_write(chip, MEMTYPE_INTERNAL_DATA,
1078                                   KDATA_MIXER_TASK_NUMBER, 
1079                                   chip->dacs_active);
1080                 break;
1081         case SNDRV_PCM_STREAM_CAPTURE:
1082                 snd_m3_assp_write(chip, MEMTYPE_INTERNAL_DATA,
1083                                   KDATA_ADC1_REQUEST, 0);
1084                 break;
1085         }
1086         return 0;
1087 }
1088 
1089 static int
1090 snd_m3_pcm_trigger(struct snd_pcm_substream *subs, int cmd)
1091 {
1092         struct snd_m3 *chip = snd_pcm_substream_chip(subs);
1093         struct m3_dma *s = subs->runtime->private_data;
1094         int err = -EINVAL;
1095 
1096         if (snd_BUG_ON(!s))
1097                 return -ENXIO;
1098 
1099         spin_lock(&chip->reg_lock);
1100         switch (cmd) {
1101         case SNDRV_PCM_TRIGGER_START:
1102         case SNDRV_PCM_TRIGGER_RESUME:
1103                 if (s->running)
1104                         err = -EBUSY;
1105                 else {
1106                         s->running = 1;
1107                         err = snd_m3_pcm_start(chip, s, subs);
1108                 }
1109                 break;
1110         case SNDRV_PCM_TRIGGER_STOP:
1111         case SNDRV_PCM_TRIGGER_SUSPEND:
1112                 if (! s->running)
1113                         err = 0; /* should return error? */
1114                 else {
1115                         s->running = 0;
1116                         err = snd_m3_pcm_stop(chip, s, subs);
1117                 }
1118                 break;
1119         }
1120         spin_unlock(&chip->reg_lock);
1121         return err;
1122 }
1123 
1124 /*
1125  * setup
1126  */
1127 static void 
1128 snd_m3_pcm_setup1(struct snd_m3 *chip, struct m3_dma *s, struct snd_pcm_substream *subs)
1129 {
1130         int dsp_in_size, dsp_out_size, dsp_in_buffer, dsp_out_buffer;
1131         struct snd_pcm_runtime *runtime = subs->runtime;
1132 
1133         if (subs->stream == SNDRV_PCM_STREAM_PLAYBACK) {
1134                 dsp_in_size = MINISRC_IN_BUFFER_SIZE - (0x20 * 2);
1135                 dsp_out_size = MINISRC_OUT_BUFFER_SIZE - (0x20 * 2);
1136         } else {
1137                 dsp_in_size = MINISRC_IN_BUFFER_SIZE - (0x10 * 2);
1138                 dsp_out_size = MINISRC_OUT_BUFFER_SIZE - (0x10 * 2);
1139         }
1140         dsp_in_buffer = s->inst.data + (MINISRC_TMP_BUFFER_SIZE / 2);
1141         dsp_out_buffer = dsp_in_buffer + (dsp_in_size / 2) + 1;
1142 
1143         s->dma_size = frames_to_bytes(runtime, runtime->buffer_size);
1144         s->period_size = frames_to_bytes(runtime, runtime->period_size);
1145         s->hwptr = 0;
1146         s->count = 0;
1147 
1148 #define LO(x) ((x) & 0xffff)
1149 #define HI(x) LO((x) >> 16)
1150 
1151         /* host dma buffer pointers */
1152         snd_m3_assp_write(chip, MEMTYPE_INTERNAL_DATA,
1153                           s->inst.data + CDATA_HOST_SRC_ADDRL,
1154                           LO(s->buffer_addr));
1155 
1156         snd_m3_assp_write(chip, MEMTYPE_INTERNAL_DATA,
1157                           s->inst.data + CDATA_HOST_SRC_ADDRH,
1158                           HI(s->buffer_addr));
1159 
1160         snd_m3_assp_write(chip, MEMTYPE_INTERNAL_DATA,
1161                           s->inst.data + CDATA_HOST_SRC_END_PLUS_1L,
1162                           LO(s->buffer_addr + s->dma_size));
1163 
1164         snd_m3_assp_write(chip, MEMTYPE_INTERNAL_DATA,
1165                           s->inst.data + CDATA_HOST_SRC_END_PLUS_1H,
1166                           HI(s->buffer_addr + s->dma_size));
1167 
1168         snd_m3_assp_write(chip, MEMTYPE_INTERNAL_DATA,
1169                           s->inst.data + CDATA_HOST_SRC_CURRENTL,
1170                           LO(s->buffer_addr));
1171 
1172         snd_m3_assp_write(chip, MEMTYPE_INTERNAL_DATA,
1173                           s->inst.data + CDATA_HOST_SRC_CURRENTH,
1174                           HI(s->buffer_addr));
1175 #undef LO
1176 #undef HI
1177 
1178         /* dsp buffers */
1179 
1180         snd_m3_assp_write(chip, MEMTYPE_INTERNAL_DATA,
1181                           s->inst.data + CDATA_IN_BUF_BEGIN,
1182                           dsp_in_buffer);
1183 
1184         snd_m3_assp_write(chip, MEMTYPE_INTERNAL_DATA,
1185                           s->inst.data + CDATA_IN_BUF_END_PLUS_1,
1186                           dsp_in_buffer + (dsp_in_size / 2));
1187 
1188         snd_m3_assp_write(chip, MEMTYPE_INTERNAL_DATA,
1189                           s->inst.data + CDATA_IN_BUF_HEAD,
1190                           dsp_in_buffer);
1191     
1192         snd_m3_assp_write(chip, MEMTYPE_INTERNAL_DATA,
1193                           s->inst.data + CDATA_IN_BUF_TAIL,
1194                           dsp_in_buffer);
1195 
1196         snd_m3_assp_write(chip, MEMTYPE_INTERNAL_DATA,
1197                           s->inst.data + CDATA_OUT_BUF_BEGIN,
1198                           dsp_out_buffer);
1199 
1200         snd_m3_assp_write(chip, MEMTYPE_INTERNAL_DATA,
1201                           s->inst.data + CDATA_OUT_BUF_END_PLUS_1,
1202                           dsp_out_buffer + (dsp_out_size / 2));
1203 
1204         snd_m3_assp_write(chip, MEMTYPE_INTERNAL_DATA,
1205                           s->inst.data + CDATA_OUT_BUF_HEAD,
1206                           dsp_out_buffer);
1207 
1208         snd_m3_assp_write(chip, MEMTYPE_INTERNAL_DATA,
1209                           s->inst.data + CDATA_OUT_BUF_TAIL,
1210                           dsp_out_buffer);
1211 }
1212 
1213 static void snd_m3_pcm_setup2(struct snd_m3 *chip, struct m3_dma *s,
1214                               struct snd_pcm_runtime *runtime)
1215 {
1216         u32 freq;
1217 
1218         /* 
1219          * put us in the lists if we're not already there
1220          */
1221         if (! s->in_lists) {
1222                 s->index[0] = snd_m3_add_list(chip, s->index_list[0],
1223                                               s->inst.data >> DP_SHIFT_COUNT);
1224                 s->index[1] = snd_m3_add_list(chip, s->index_list[1],
1225                                               s->inst.data >> DP_SHIFT_COUNT);
1226                 s->index[2] = snd_m3_add_list(chip, s->index_list[2],
1227                                               s->inst.data >> DP_SHIFT_COUNT);
1228                 s->in_lists = 1;
1229         }
1230 
1231         /* write to 'mono' word */
1232         snd_m3_assp_write(chip, MEMTYPE_INTERNAL_DATA,
1233                           s->inst.data + SRC3_DIRECTION_OFFSET + 1, 
1234                           runtime->channels == 2 ? 0 : 1);
1235         /* write to '8bit' word */
1236         snd_m3_assp_write(chip, MEMTYPE_INTERNAL_DATA,
1237                           s->inst.data + SRC3_DIRECTION_OFFSET + 2, 
1238                           snd_pcm_format_width(runtime->format) == 16 ? 0 : 1);
1239 
1240         /* set up dac/adc rate */
1241         freq = DIV_ROUND_CLOSEST(runtime->rate << 15, 48000);
1242         if (freq) 
1243                 freq--;
1244 
1245         snd_m3_assp_write(chip, MEMTYPE_INTERNAL_DATA,
1246                           s->inst.data + CDATA_FREQUENCY,
1247                           freq);
1248 }
1249 
1250 
1251 static const struct play_vals {
1252         u16 addr, val;
1253 } pv[] = {
1254         {CDATA_LEFT_VOLUME, ARB_VOLUME},
1255         {CDATA_RIGHT_VOLUME, ARB_VOLUME},
1256         {SRC3_DIRECTION_OFFSET, 0} ,
1257         /* +1, +2 are stereo/16 bit */
1258         {SRC3_DIRECTION_OFFSET + 3, 0x0000}, /* fraction? */
1259         {SRC3_DIRECTION_OFFSET + 4, 0}, /* first l */
1260         {SRC3_DIRECTION_OFFSET + 5, 0}, /* first r */
1261         {SRC3_DIRECTION_OFFSET + 6, 0}, /* second l */
1262         {SRC3_DIRECTION_OFFSET + 7, 0}, /* second r */
1263         {SRC3_DIRECTION_OFFSET + 8, 0}, /* delta l */
1264         {SRC3_DIRECTION_OFFSET + 9, 0}, /* delta r */
1265         {SRC3_DIRECTION_OFFSET + 10, 0x8000}, /* round */
1266         {SRC3_DIRECTION_OFFSET + 11, 0xFF00}, /* higher bute mark */
1267         {SRC3_DIRECTION_OFFSET + 13, 0}, /* temp0 */
1268         {SRC3_DIRECTION_OFFSET + 14, 0}, /* c fraction */
1269         {SRC3_DIRECTION_OFFSET + 15, 0}, /* counter */
1270         {SRC3_DIRECTION_OFFSET + 16, 8}, /* numin */
1271         {SRC3_DIRECTION_OFFSET + 17, 50*2}, /* numout */
1272         {SRC3_DIRECTION_OFFSET + 18, MINISRC_BIQUAD_STAGE - 1}, /* numstage */
1273         {SRC3_DIRECTION_OFFSET + 20, 0}, /* filtertap */
1274         {SRC3_DIRECTION_OFFSET + 21, 0} /* booster */
1275 };
1276 
1277 
1278 /* the mode passed should be already shifted and masked */
1279 static void
1280 snd_m3_playback_setup(struct snd_m3 *chip, struct m3_dma *s,
1281                       struct snd_pcm_substream *subs)
1282 {
1283         unsigned int i;
1284 
1285         /*
1286          * some per client initializers
1287          */
1288 
1289         snd_m3_assp_write(chip, MEMTYPE_INTERNAL_DATA,
1290                           s->inst.data + SRC3_DIRECTION_OFFSET + 12,
1291                           s->inst.data + 40 + 8);
1292 
1293         snd_m3_assp_write(chip, MEMTYPE_INTERNAL_DATA,
1294                           s->inst.data + SRC3_DIRECTION_OFFSET + 19,
1295                           s->inst.code + MINISRC_COEF_LOC);
1296 
1297         /* enable or disable low pass filter? */
1298         snd_m3_assp_write(chip, MEMTYPE_INTERNAL_DATA,
1299                           s->inst.data + SRC3_DIRECTION_OFFSET + 22,
1300                           subs->runtime->rate > 45000 ? 0xff : 0);
1301     
1302         /* tell it which way dma is going? */
1303         snd_m3_assp_write(chip, MEMTYPE_INTERNAL_DATA,
1304                           s->inst.data + CDATA_DMA_CONTROL,
1305                           DMACONTROL_AUTOREPEAT + DMAC_PAGE3_SELECTOR + DMAC_BLOCKF_SELECTOR);
1306 
1307         /*
1308          * set an armload of static initializers
1309          */
1310         for (i = 0; i < ARRAY_SIZE(pv); i++) 
1311                 snd_m3_assp_write(chip, MEMTYPE_INTERNAL_DATA,
1312                                   s->inst.data + pv[i].addr, pv[i].val);
1313 }
1314 
1315 /*
1316  *    Native record driver 
1317  */
1318 static const struct rec_vals {
1319         u16 addr, val;
1320 } rv[] = {
1321         {CDATA_LEFT_VOLUME, ARB_VOLUME},
1322         {CDATA_RIGHT_VOLUME, ARB_VOLUME},
1323         {SRC3_DIRECTION_OFFSET, 1} ,
1324         /* +1, +2 are stereo/16 bit */
1325         {SRC3_DIRECTION_OFFSET + 3, 0x0000}, /* fraction? */
1326         {SRC3_DIRECTION_OFFSET + 4, 0}, /* first l */
1327         {SRC3_DIRECTION_OFFSET + 5, 0}, /* first r */
1328         {SRC3_DIRECTION_OFFSET + 6, 0}, /* second l */
1329         {SRC3_DIRECTION_OFFSET + 7, 0}, /* second r */
1330         {SRC3_DIRECTION_OFFSET + 8, 0}, /* delta l */
1331         {SRC3_DIRECTION_OFFSET + 9, 0}, /* delta r */
1332         {SRC3_DIRECTION_OFFSET + 10, 0x8000}, /* round */
1333         {SRC3_DIRECTION_OFFSET + 11, 0xFF00}, /* higher bute mark */
1334         {SRC3_DIRECTION_OFFSET + 13, 0}, /* temp0 */
1335         {SRC3_DIRECTION_OFFSET + 14, 0}, /* c fraction */
1336         {SRC3_DIRECTION_OFFSET + 15, 0}, /* counter */
1337         {SRC3_DIRECTION_OFFSET + 16, 50},/* numin */
1338         {SRC3_DIRECTION_OFFSET + 17, 8}, /* numout */
1339         {SRC3_DIRECTION_OFFSET + 18, 0}, /* numstage */
1340         {SRC3_DIRECTION_OFFSET + 19, 0}, /* coef */
1341         {SRC3_DIRECTION_OFFSET + 20, 0}, /* filtertap */
1342         {SRC3_DIRECTION_OFFSET + 21, 0}, /* booster */
1343         {SRC3_DIRECTION_OFFSET + 22, 0xff} /* skip lpf */
1344 };
1345 
1346 static void
1347 snd_m3_capture_setup(struct snd_m3 *chip, struct m3_dma *s, struct snd_pcm_substream *subs)
1348 {
1349         unsigned int i;
1350 
1351         /*
1352          * some per client initializers
1353          */
1354 
1355         snd_m3_assp_write(chip, MEMTYPE_INTERNAL_DATA,
1356                           s->inst.data + SRC3_DIRECTION_OFFSET + 12,
1357                           s->inst.data + 40 + 8);
1358 
1359         /* tell it which way dma is going? */
1360         snd_m3_assp_write(chip, MEMTYPE_INTERNAL_DATA,
1361                           s->inst.data + CDATA_DMA_CONTROL,
1362                           DMACONTROL_DIRECTION + DMACONTROL_AUTOREPEAT + 
1363                           DMAC_PAGE3_SELECTOR + DMAC_BLOCKF_SELECTOR);
1364 
1365         /*
1366          * set an armload of static initializers
1367          */
1368         for (i = 0; i < ARRAY_SIZE(rv); i++) 
1369                 snd_m3_assp_write(chip, MEMTYPE_INTERNAL_DATA,
1370                                   s->inst.data + rv[i].addr, rv[i].val);
1371 }
1372 
1373 static int snd_m3_pcm_hw_params(struct snd_pcm_substream *substream,
1374                                 struct snd_pcm_hw_params *hw_params)
1375 {
1376         struct m3_dma *s = substream->runtime->private_data;
1377 
1378         /* set buffer address */
1379         s->buffer_addr = substream->runtime->dma_addr;
1380         if (s->buffer_addr & 0x3) {
1381                 dev_err(substream->pcm->card->dev, "oh my, not aligned\n");
1382                 s->buffer_addr = s->buffer_addr & ~0x3;
1383         }
1384         return 0;
1385 }
1386 
1387 static int snd_m3_pcm_hw_free(struct snd_pcm_substream *substream)
1388 {
1389         struct m3_dma *s;
1390         
1391         if (substream->runtime->private_data == NULL)
1392                 return 0;
1393         s = substream->runtime->private_data;
1394         s->buffer_addr = 0;
1395         return 0;
1396 }
1397 
1398 static int
1399 snd_m3_pcm_prepare(struct snd_pcm_substream *subs)
1400 {
1401         struct snd_m3 *chip = snd_pcm_substream_chip(subs);
1402         struct snd_pcm_runtime *runtime = subs->runtime;
1403         struct m3_dma *s = runtime->private_data;
1404 
1405         if (snd_BUG_ON(!s))
1406                 return -ENXIO;
1407 
1408         if (runtime->format != SNDRV_PCM_FORMAT_U8 &&
1409             runtime->format != SNDRV_PCM_FORMAT_S16_LE)
1410                 return -EINVAL;
1411         if (runtime->rate > 48000 ||
1412             runtime->rate < 8000)
1413                 return -EINVAL;
1414 
1415         spin_lock_irq(&chip->reg_lock);
1416 
1417         snd_m3_pcm_setup1(chip, s, subs);
1418 
1419         if (subs->stream == SNDRV_PCM_STREAM_PLAYBACK)
1420                 snd_m3_playback_setup(chip, s, subs);
1421         else
1422                 snd_m3_capture_setup(chip, s, subs);
1423 
1424         snd_m3_pcm_setup2(chip, s, runtime);
1425 
1426         spin_unlock_irq(&chip->reg_lock);
1427 
1428         return 0;
1429 }
1430 
1431 /*
1432  * get current pointer
1433  */
1434 static unsigned int
1435 snd_m3_get_pointer(struct snd_m3 *chip, struct m3_dma *s, struct snd_pcm_substream *subs)
1436 {
1437         u16 hi = 0, lo = 0;
1438         int retry = 10;
1439         u32 addr;
1440 
1441         /*
1442          * try and get a valid answer
1443          */
1444         while (retry--) {
1445                 hi =  snd_m3_assp_read(chip, MEMTYPE_INTERNAL_DATA,
1446                                        s->inst.data + CDATA_HOST_SRC_CURRENTH);
1447 
1448                 lo = snd_m3_assp_read(chip, MEMTYPE_INTERNAL_DATA,
1449                                       s->inst.data + CDATA_HOST_SRC_CURRENTL);
1450 
1451                 if (hi == snd_m3_assp_read(chip, MEMTYPE_INTERNAL_DATA,
1452                                            s->inst.data + CDATA_HOST_SRC_CURRENTH))
1453                         break;
1454         }
1455         addr = lo | ((u32)hi<<16);
1456         return (unsigned int)(addr - s->buffer_addr);
1457 }
1458 
1459 static snd_pcm_uframes_t
1460 snd_m3_pcm_pointer(struct snd_pcm_substream *subs)
1461 {
1462         struct snd_m3 *chip = snd_pcm_substream_chip(subs);
1463         unsigned int ptr;
1464         struct m3_dma *s = subs->runtime->private_data;
1465 
1466         if (snd_BUG_ON(!s))
1467                 return 0;
1468 
1469         spin_lock(&chip->reg_lock);
1470         ptr = snd_m3_get_pointer(chip, s, subs);
1471         spin_unlock(&chip->reg_lock);
1472         return bytes_to_frames(subs->runtime, ptr);
1473 }
1474 
1475 
1476 /* update pointer */
1477 /* spinlock held! */
1478 static void snd_m3_update_ptr(struct snd_m3 *chip, struct m3_dma *s)
1479 {
1480         struct snd_pcm_substream *subs = s->substream;
1481         unsigned int hwptr;
1482         int diff;
1483 
1484         if (! s->running)
1485                 return;
1486 
1487         hwptr = snd_m3_get_pointer(chip, s, subs);
1488 
1489         /* try to avoid expensive modulo divisions */
1490         if (hwptr >= s->dma_size)
1491                 hwptr %= s->dma_size;
1492 
1493         diff = s->dma_size + hwptr - s->hwptr;
1494         if (diff >= s->dma_size)
1495                 diff %= s->dma_size;
1496 
1497         s->hwptr = hwptr;
1498         s->count += diff;
1499 
1500         if (s->count >= (signed)s->period_size) {
1501 
1502                 if (s->count < 2 * (signed)s->period_size)
1503                         s->count -= (signed)s->period_size;
1504                 else
1505                         s->count %= s->period_size;
1506 
1507                 spin_unlock(&chip->reg_lock);
1508                 snd_pcm_period_elapsed(subs);
1509                 spin_lock(&chip->reg_lock);
1510         }
1511 }
1512 
1513 /* The m3's hardware volume works by incrementing / decrementing 2 counters
1514    (without wrap around) in response to volume button presses and then
1515    generating an interrupt. The pair of counters is stored in bits 1-3 and 5-7
1516    of a byte wide register. The meaning of bits 0 and 4 is unknown. */
1517 static void snd_m3_update_hw_volume(struct work_struct *work)
1518 {
1519         struct snd_m3 *chip = container_of(work, struct snd_m3, hwvol_work);
1520         int x, val;
1521 
1522         /* Figure out which volume control button was pushed,
1523            based on differences from the default register
1524            values. */
1525         x = inb(chip->iobase + SHADOW_MIX_REG_VOICE) & 0xee;
1526 
1527         /* Reset the volume counters to 4. Tests on the allegro integrated
1528            into a Compaq N600C laptop, have revealed that:
1529            1) Writing any value will result in the 2 counters being reset to
1530               4 so writing 0x88 is not strictly necessary
1531            2) Writing to any of the 4 involved registers will reset all 4
1532               of them (and reading them always returns the same value for all
1533               of them)
1534            It could be that a maestro deviates from this, so leave the code
1535            as is. */
1536         outb(0x88, chip->iobase + SHADOW_MIX_REG_VOICE);
1537         outb(0x88, chip->iobase + HW_VOL_COUNTER_VOICE);
1538         outb(0x88, chip->iobase + SHADOW_MIX_REG_MASTER);
1539         outb(0x88, chip->iobase + HW_VOL_COUNTER_MASTER);
1540 
1541         /* Ignore spurious HV interrupts during suspend / resume, this avoids
1542            mistaking them for a mute button press. */
1543         if (chip->in_suspend)
1544                 return;
1545 
1546 #ifndef CONFIG_SND_MAESTRO3_INPUT
1547         if (!chip->master_switch || !chip->master_volume)
1548                 return;
1549 
1550         val = snd_ac97_read(chip->ac97, AC97_MASTER);
1551         switch (x) {
1552         case 0x88:
1553                 /* The counters have not changed, yet we've received a HV
1554                    interrupt. According to tests run by various people this
1555                    happens when pressing the mute button. */
1556                 val ^= 0x8000;
1557                 break;
1558         case 0xaa:
1559                 /* counters increased by 1 -> volume up */
1560                 if ((val & 0x7f) > 0)
1561                         val--;
1562                 if ((val & 0x7f00) > 0)
1563                         val -= 0x0100;
1564                 break;
1565         case 0x66:
1566                 /* counters decreased by 1 -> volume down */
1567                 if ((val & 0x7f) < 0x1f)
1568                         val++;
1569                 if ((val & 0x7f00) < 0x1f00)
1570                         val += 0x0100;
1571                 break;
1572         }
1573         if (snd_ac97_update(chip->ac97, AC97_MASTER, val))
1574                 snd_ctl_notify(chip->card, SNDRV_CTL_EVENT_MASK_VALUE,
1575                                &chip->master_switch->id);
1576 #else
1577         if (!chip->input_dev)
1578                 return;
1579 
1580         val = 0;
1581         switch (x) {
1582         case 0x88:
1583                 /* The counters have not changed, yet we've received a HV
1584                    interrupt. According to tests run by various people this
1585                    happens when pressing the mute button. */
1586                 val = KEY_MUTE;
1587                 break;
1588         case 0xaa:
1589                 /* counters increased by 1 -> volume up */
1590                 val = KEY_VOLUMEUP;
1591                 break;
1592         case 0x66:
1593                 /* counters decreased by 1 -> volume down */
1594                 val = KEY_VOLUMEDOWN;
1595                 break;
1596         }
1597 
1598         if (val) {
1599                 input_report_key(chip->input_dev, val, 1);
1600                 input_sync(chip->input_dev);
1601                 input_report_key(chip->input_dev, val, 0);
1602                 input_sync(chip->input_dev);
1603         }
1604 #endif
1605 }
1606 
1607 static irqreturn_t snd_m3_interrupt(int irq, void *dev_id)
1608 {
1609         struct snd_m3 *chip = dev_id;
1610         u8 status;
1611         int i;
1612 
1613         status = inb(chip->iobase + HOST_INT_STATUS);
1614 
1615         if (status == 0xff)
1616                 return IRQ_NONE;
1617 
1618         if (status & HV_INT_PENDING)
1619                 schedule_work(&chip->hwvol_work);
1620 
1621         /*
1622          * ack an assp int if its running
1623          * and has an int pending
1624          */
1625         if (status & ASSP_INT_PENDING) {
1626                 u8 ctl = inb(chip->iobase + ASSP_CONTROL_B);
1627                 if (!(ctl & STOP_ASSP_CLOCK)) {
1628                         ctl = inb(chip->iobase + ASSP_HOST_INT_STATUS);
1629                         if (ctl & DSP2HOST_REQ_TIMER) {
1630                                 outb(DSP2HOST_REQ_TIMER, chip->iobase + ASSP_HOST_INT_STATUS);
1631                                 /* update adc/dac info if it was a timer int */
1632                                 spin_lock(&chip->reg_lock);
1633                                 for (i = 0; i < chip->num_substreams; i++) {
1634                                         struct m3_dma *s = &chip->substreams[i];
1635                                         if (s->running)
1636                                                 snd_m3_update_ptr(chip, s);
1637                                 }
1638                                 spin_unlock(&chip->reg_lock);
1639                         }
1640                 }
1641         }
1642 
1643 #if 0 /* TODO: not supported yet */
1644         if ((status & MPU401_INT_PENDING) && chip->rmidi)
1645                 snd_mpu401_uart_interrupt(irq, chip->rmidi->private_data, regs);
1646 #endif
1647 
1648         /* ack ints */
1649         outb(status, chip->iobase + HOST_INT_STATUS);
1650 
1651         return IRQ_HANDLED;
1652 }
1653 
1654 
1655 /*
1656  */
1657 
1658 static const struct snd_pcm_hardware snd_m3_playback =
1659 {
1660         .info =                 (SNDRV_PCM_INFO_MMAP |
1661                                  SNDRV_PCM_INFO_INTERLEAVED |
1662                                  SNDRV_PCM_INFO_MMAP_VALID |
1663                                  SNDRV_PCM_INFO_BLOCK_TRANSFER |
1664                                  /*SNDRV_PCM_INFO_PAUSE |*/
1665                                  SNDRV_PCM_INFO_RESUME),
1666         .formats =              SNDRV_PCM_FMTBIT_U8 | SNDRV_PCM_FMTBIT_S16_LE,
1667         .rates =                SNDRV_PCM_RATE_CONTINUOUS | SNDRV_PCM_RATE_8000_48000,
1668         .rate_min =             8000,
1669         .rate_max =             48000,
1670         .channels_min =         1,
1671         .channels_max =         2,
1672         .buffer_bytes_max =     (512*1024),
1673         .period_bytes_min =     64,
1674         .period_bytes_max =     (512*1024),
1675         .periods_min =          1,
1676         .periods_max =          1024,
1677 };
1678 
1679 static const struct snd_pcm_hardware snd_m3_capture =
1680 {
1681         .info =                 (SNDRV_PCM_INFO_MMAP |
1682                                  SNDRV_PCM_INFO_INTERLEAVED |
1683                                  SNDRV_PCM_INFO_MMAP_VALID |
1684                                  SNDRV_PCM_INFO_BLOCK_TRANSFER |
1685                                  /*SNDRV_PCM_INFO_PAUSE |*/
1686                                  SNDRV_PCM_INFO_RESUME),
1687         .formats =              SNDRV_PCM_FMTBIT_U8 | SNDRV_PCM_FMTBIT_S16_LE,
1688         .rates =                SNDRV_PCM_RATE_CONTINUOUS | SNDRV_PCM_RATE_8000_48000,
1689         .rate_min =             8000,
1690         .rate_max =             48000,
1691         .channels_min =         1,
1692         .channels_max =         2,
1693         .buffer_bytes_max =     (512*1024),
1694         .period_bytes_min =     64,
1695         .period_bytes_max =     (512*1024),
1696         .periods_min =          1,
1697         .periods_max =          1024,
1698 };
1699 
1700 
1701 /*
1702  */
1703 
1704 static int
1705 snd_m3_substream_open(struct snd_m3 *chip, struct snd_pcm_substream *subs)
1706 {
1707         int i;
1708         struct m3_dma *s;
1709 
1710         spin_lock_irq(&chip->reg_lock);
1711         for (i = 0; i < chip->num_substreams; i++) {
1712                 s = &chip->substreams[i];
1713                 if (! s->opened)
1714                         goto __found;
1715         }
1716         spin_unlock_irq(&chip->reg_lock);
1717         return -ENOMEM;
1718 __found:
1719         s->opened = 1;
1720         s->running = 0;
1721         spin_unlock_irq(&chip->reg_lock);
1722 
1723         subs->runtime->private_data = s;
1724         s->substream = subs;
1725 
1726         /* set list owners */
1727         if (subs->stream == SNDRV_PCM_STREAM_PLAYBACK) {
1728                 s->index_list[0] = &chip->mixer_list;
1729         } else
1730                 s->index_list[0] = &chip->adc1_list;
1731         s->index_list[1] = &chip->msrc_list;
1732         s->index_list[2] = &chip->dma_list;
1733 
1734         return 0;
1735 }
1736 
1737 static void
1738 snd_m3_substream_close(struct snd_m3 *chip, struct snd_pcm_substream *subs)
1739 {
1740         struct m3_dma *s = subs->runtime->private_data;
1741 
1742         if (s == NULL)
1743                 return; /* not opened properly */
1744 
1745         spin_lock_irq(&chip->reg_lock);
1746         if (s->substream && s->running)
1747                 snd_m3_pcm_stop(chip, s, s->substream); /* does this happen? */
1748         if (s->in_lists) {
1749                 snd_m3_remove_list(chip, s->index_list[0], s->index[0]);
1750                 snd_m3_remove_list(chip, s->index_list[1], s->index[1]);
1751                 snd_m3_remove_list(chip, s->index_list[2], s->index[2]);
1752                 s->in_lists = 0;
1753         }
1754         s->running = 0;
1755         s->opened = 0;
1756         spin_unlock_irq(&chip->reg_lock);
1757 }
1758 
1759 static int
1760 snd_m3_playback_open(struct snd_pcm_substream *subs)
1761 {
1762         struct snd_m3 *chip = snd_pcm_substream_chip(subs);
1763         struct snd_pcm_runtime *runtime = subs->runtime;
1764         int err;
1765 
1766         err = snd_m3_substream_open(chip, subs);
1767         if (err < 0)
1768                 return err;
1769 
1770         runtime->hw = snd_m3_playback;
1771 
1772         return 0;
1773 }
1774 
1775 static int
1776 snd_m3_playback_close(struct snd_pcm_substream *subs)
1777 {
1778         struct snd_m3 *chip = snd_pcm_substream_chip(subs);
1779 
1780         snd_m3_substream_close(chip, subs);
1781         return 0;
1782 }
1783 
1784 static int
1785 snd_m3_capture_open(struct snd_pcm_substream *subs)
1786 {
1787         struct snd_m3 *chip = snd_pcm_substream_chip(subs);
1788         struct snd_pcm_runtime *runtime = subs->runtime;
1789         int err;
1790 
1791         err = snd_m3_substream_open(chip, subs);
1792         if (err < 0)
1793                 return err;
1794 
1795         runtime->hw = snd_m3_capture;
1796 
1797         return 0;
1798 }
1799 
1800 static int
1801 snd_m3_capture_close(struct snd_pcm_substream *subs)
1802 {
1803         struct snd_m3 *chip = snd_pcm_substream_chip(subs);
1804 
1805         snd_m3_substream_close(chip, subs);
1806         return 0;
1807 }
1808 
1809 /*
1810  * create pcm instance
1811  */
1812 
1813 static const struct snd_pcm_ops snd_m3_playback_ops = {
1814         .open =         snd_m3_playback_open,
1815         .close =        snd_m3_playback_close,
1816         .hw_params =    snd_m3_pcm_hw_params,
1817         .hw_free =      snd_m3_pcm_hw_free,
1818         .prepare =      snd_m3_pcm_prepare,
1819         .trigger =      snd_m3_pcm_trigger,
1820         .pointer =      snd_m3_pcm_pointer,
1821 };
1822 
1823 static const struct snd_pcm_ops snd_m3_capture_ops = {
1824         .open =         snd_m3_capture_open,
1825         .close =        snd_m3_capture_close,
1826         .hw_params =    snd_m3_pcm_hw_params,
1827         .hw_free =      snd_m3_pcm_hw_free,
1828         .prepare =      snd_m3_pcm_prepare,
1829         .trigger =      snd_m3_pcm_trigger,
1830         .pointer =      snd_m3_pcm_pointer,
1831 };
1832 
1833 static int
1834 snd_m3_pcm(struct snd_m3 * chip, int device)
1835 {
1836         struct snd_pcm *pcm;
1837         int err;
1838 
1839         err = snd_pcm_new(chip->card, chip->card->driver, device,
1840                           MAX_PLAYBACKS, MAX_CAPTURES, &pcm);
1841         if (err < 0)
1842                 return err;
1843 
1844         snd_pcm_set_ops(pcm, SNDRV_PCM_STREAM_PLAYBACK, &snd_m3_playback_ops);
1845         snd_pcm_set_ops(pcm, SNDRV_PCM_STREAM_CAPTURE, &snd_m3_capture_ops);
1846 
1847         pcm->private_data = chip;
1848         pcm->info_flags = 0;
1849         strcpy(pcm->name, chip->card->driver);
1850         chip->pcm = pcm;
1851         
1852         snd_pcm_set_managed_buffer_all(pcm, SNDRV_DMA_TYPE_DEV,
1853                                        &chip->pci->dev, 64*1024, 64*1024);
1854 
1855         return 0;
1856 }
1857 
1858 
1859 /*
1860  * ac97 interface
1861  */
1862 
1863 /*
1864  * Wait for the ac97 serial bus to be free.
1865  * return nonzero if the bus is still busy.
1866  */
1867 static int snd_m3_ac97_wait(struct snd_m3 *chip)
1868 {
1869         int i = 10000;
1870 
1871         do {
1872                 if (! (snd_m3_inb(chip, 0x30) & 1))
1873                         return 0;
1874                 cpu_relax();
1875         } while (i-- > 0);
1876 
1877         dev_err(chip->card->dev, "ac97 serial bus busy\n");
1878         return 1;
1879 }
1880 
1881 static unsigned short
1882 snd_m3_ac97_read(struct snd_ac97 *ac97, unsigned short reg)
1883 {
1884         struct snd_m3 *chip = ac97->private_data;
1885         unsigned short data = 0xffff;
1886 
1887         if (snd_m3_ac97_wait(chip))
1888                 goto fail;
1889         snd_m3_outb(chip, 0x80 | (reg & 0x7f), CODEC_COMMAND);
1890         if (snd_m3_ac97_wait(chip))
1891                 goto fail;
1892         data = snd_m3_inw(chip, CODEC_DATA);
1893 fail:
1894         return data;
1895 }
1896 
1897 static void
1898 snd_m3_ac97_write(struct snd_ac97 *ac97, unsigned short reg, unsigned short val)
1899 {
1900         struct snd_m3 *chip = ac97->private_data;
1901 
1902         if (snd_m3_ac97_wait(chip))
1903                 return;
1904         snd_m3_outw(chip, val, CODEC_DATA);
1905         snd_m3_outb(chip, reg & 0x7f, CODEC_COMMAND);
1906         /*
1907          * Workaround for buggy ES1988 integrated AC'97 codec. It remains silent
1908          * until the MASTER volume or mute is touched (alsactl restore does not
1909          * work).
1910          */
1911         if (ac97->id == 0x45838308 && reg == AC97_MASTER) {
1912                 snd_m3_ac97_wait(chip);
1913                 snd_m3_outw(chip, val, CODEC_DATA);
1914                 snd_m3_outb(chip, reg & 0x7f, CODEC_COMMAND);
1915         }
1916 }
1917 
1918 
1919 static void snd_m3_remote_codec_config(struct snd_m3 *chip, int isremote)
1920 {
1921         int io = chip->iobase;
1922         u16 tmp;
1923 
1924         isremote = isremote ? 1 : 0;
1925 
1926         tmp = inw(io + RING_BUS_CTRL_B) & ~SECOND_CODEC_ID_MASK;
1927         /* enable dock on Dell Latitude C810 */
1928         if (chip->pci->subsystem_vendor == 0x1028 &&
1929             chip->pci->subsystem_device == 0x00e5)
1930                 tmp |= M3I_DOCK_ENABLE;
1931         outw(tmp | isremote, io + RING_BUS_CTRL_B);
1932         outw((inw(io + SDO_OUT_DEST_CTRL) & ~COMMAND_ADDR_OUT) | isremote,
1933              io + SDO_OUT_DEST_CTRL);
1934         outw((inw(io + SDO_IN_DEST_CTRL) & ~STATUS_ADDR_IN) | isremote,
1935              io + SDO_IN_DEST_CTRL);
1936 }
1937 
1938 /* 
1939  * hack, returns non zero on err 
1940  */
1941 static int snd_m3_try_read_vendor(struct snd_m3 *chip)
1942 {
1943         u16 ret;
1944 
1945         if (snd_m3_ac97_wait(chip))
1946                 return 1;
1947 
1948         snd_m3_outb(chip, 0x80 | (AC97_VENDOR_ID1 & 0x7f), 0x30);
1949 
1950         if (snd_m3_ac97_wait(chip))
1951                 return 1;
1952 
1953         ret = snd_m3_inw(chip, 0x32);
1954 
1955         return (ret == 0) || (ret == 0xffff);
1956 }
1957 
1958 static void snd_m3_ac97_reset(struct snd_m3 *chip)
1959 {
1960         u16 dir;
1961         int delay1 = 0, delay2 = 0, i;
1962         int io = chip->iobase;
1963 
1964         if (chip->allegro_flag) {
1965                 /*
1966                  * the onboard codec on the allegro seems 
1967                  * to want to wait a very long time before
1968                  * coming back to life 
1969                  */
1970                 delay1 = 50;
1971                 delay2 = 800;
1972         } else {
1973                 /* maestro3 */
1974                 delay1 = 20;
1975                 delay2 = 500;
1976         }
1977 
1978         for (i = 0; i < 5; i++) {
1979                 dir = inw(io + GPIO_DIRECTION);
1980                 if (!chip->irda_workaround)
1981                         dir |= 0x10; /* assuming pci bus master? */
1982 
1983                 snd_m3_remote_codec_config(chip, 0);
1984 
1985                 outw(IO_SRAM_ENABLE, io + RING_BUS_CTRL_A);
1986                 udelay(20);
1987 
1988                 outw(dir & ~GPO_PRIMARY_AC97 , io + GPIO_DIRECTION);
1989                 outw(~GPO_PRIMARY_AC97 , io + GPIO_MASK);
1990                 outw(0, io + GPIO_DATA);
1991                 outw(dir | GPO_PRIMARY_AC97, io + GPIO_DIRECTION);
1992 
1993                 schedule_timeout_uninterruptible(msecs_to_jiffies(delay1));
1994 
1995                 outw(GPO_PRIMARY_AC97, io + GPIO_DATA);
1996                 udelay(5);
1997                 /* ok, bring back the ac-link */
1998                 outw(IO_SRAM_ENABLE | SERIAL_AC_LINK_ENABLE, io + RING_BUS_CTRL_A);
1999                 outw(~0, io + GPIO_MASK);
2000 
2001                 schedule_timeout_uninterruptible(msecs_to_jiffies(delay2));
2002 
2003                 if (! snd_m3_try_read_vendor(chip))
2004                         break;
2005 
2006                 delay1 += 10;
2007                 delay2 += 100;
2008 
2009                 dev_dbg(chip->card->dev,
2010                         "retrying codec reset with delays of %d and %d ms\n",
2011                            delay1, delay2);
2012         }
2013 
2014 #if 0
2015         /* more gung-ho reset that doesn't
2016          * seem to work anywhere :)
2017          */
2018         tmp = inw(io + RING_BUS_CTRL_A);
2019         outw(RAC_SDFS_ENABLE|LAC_SDFS_ENABLE, io + RING_BUS_CTRL_A);
2020         msleep(20);
2021         outw(tmp, io + RING_BUS_CTRL_A);
2022         msleep(50);
2023 #endif
2024 }
2025 
2026 static int snd_m3_mixer(struct snd_m3 *chip)
2027 {
2028         struct snd_ac97_bus *pbus;
2029         struct snd_ac97_template ac97;
2030         int err;
2031         static const struct snd_ac97_bus_ops ops = {
2032                 .write = snd_m3_ac97_write,
2033                 .read = snd_m3_ac97_read,
2034         };
2035 
2036         err = snd_ac97_bus(chip->card, 0, &ops, NULL, &pbus);
2037         if (err < 0)
2038                 return err;
2039         
2040         memset(&ac97, 0, sizeof(ac97));
2041         ac97.private_data = chip;
2042         err = snd_ac97_mixer(pbus, &ac97, &chip->ac97);
2043         if (err < 0)
2044                 return err;
2045 
2046         /* seems ac97 PCM needs initialization.. hack hack.. */
2047         snd_ac97_write(chip->ac97, AC97_PCM, 0x8000 | (15 << 8) | 15);
2048         schedule_timeout_uninterruptible(msecs_to_jiffies(100));
2049         snd_ac97_write(chip->ac97, AC97_PCM, 0);
2050 
2051 #ifndef CONFIG_SND_MAESTRO3_INPUT
2052         chip->master_switch = snd_ctl_find_id_mixer(chip->card,
2053                                                     "Master Playback Switch");
2054         chip->master_volume = snd_ctl_find_id_mixer(chip->card,
2055                                                     "Master Playback Volume");
2056 #endif
2057 
2058         return 0;
2059 }
2060 
2061 
2062 /*
2063  * initialize ASSP
2064  */
2065 
2066 #define MINISRC_LPF_LEN 10
2067 static const u16 minisrc_lpf[MINISRC_LPF_LEN] = {
2068         0X0743, 0X1104, 0X0A4C, 0XF88D, 0X242C,
2069         0X1023, 0X1AA9, 0X0B60, 0XEFDD, 0X186F
2070 };
2071 
2072 static void snd_m3_assp_init(struct snd_m3 *chip)
2073 {
2074         unsigned int i;
2075         const __le16 *data;
2076 
2077         /* zero kernel data */
2078         for (i = 0; i < (REV_B_DATA_MEMORY_UNIT_LENGTH * NUM_UNITS_KERNEL_DATA) / 2; i++)
2079                 snd_m3_assp_write(chip, MEMTYPE_INTERNAL_DATA, 
2080                                   KDATA_BASE_ADDR + i, 0);
2081 
2082         /* zero mixer data? */
2083         for (i = 0; i < (REV_B_DATA_MEMORY_UNIT_LENGTH * NUM_UNITS_KERNEL_DATA) / 2; i++)
2084                 snd_m3_assp_write(chip, MEMTYPE_INTERNAL_DATA,
2085                                   KDATA_BASE_ADDR2 + i, 0);
2086 
2087         /* init dma pointer */
2088         snd_m3_assp_write(chip, MEMTYPE_INTERNAL_DATA,
2089                           KDATA_CURRENT_DMA,
2090                           KDATA_DMA_XFER0);
2091 
2092         /* write kernel into code memory.. */
2093         data = (const __le16 *)chip->assp_kernel_image->data;
2094         for (i = 0 ; i * 2 < chip->assp_kernel_image->size; i++) {
2095                 snd_m3_assp_write(chip, MEMTYPE_INTERNAL_CODE, 
2096                                   REV_B_CODE_MEMORY_BEGIN + i,
2097                                   le16_to_cpu(data[i]));
2098         }
2099 
2100         /*
2101          * We only have this one client and we know that 0x400
2102          * is free in our kernel's mem map, so lets just
2103          * drop it there.  It seems that the minisrc doesn't
2104          * need vectors, so we won't bother with them..
2105          */
2106         data = (const __le16 *)chip->assp_minisrc_image->data;
2107         for (i = 0; i * 2 < chip->assp_minisrc_image->size; i++) {
2108                 snd_m3_assp_write(chip, MEMTYPE_INTERNAL_CODE, 
2109                                   0x400 + i, le16_to_cpu(data[i]));
2110         }
2111 
2112         /*
2113          * write the coefficients for the low pass filter?
2114          */
2115         for (i = 0; i < MINISRC_LPF_LEN ; i++) {
2116                 snd_m3_assp_write(chip, MEMTYPE_INTERNAL_CODE,
2117                                   0x400 + MINISRC_COEF_LOC + i,
2118                                   minisrc_lpf[i]);
2119         }
2120 
2121         snd_m3_assp_write(chip, MEMTYPE_INTERNAL_CODE,
2122                           0x400 + MINISRC_COEF_LOC + MINISRC_LPF_LEN,
2123                           0x8000);
2124 
2125         /*
2126          * the minisrc is the only thing on
2127          * our task list..
2128          */
2129         snd_m3_assp_write(chip, MEMTYPE_INTERNAL_DATA, 
2130                           KDATA_TASK0,
2131                           0x400);
2132 
2133         /*
2134          * init the mixer number..
2135          */
2136 
2137         snd_m3_assp_write(chip, MEMTYPE_INTERNAL_DATA,
2138                           KDATA_MIXER_TASK_NUMBER,0);
2139 
2140         /*
2141          * EXTREME KERNEL MASTER VOLUME
2142          */
2143         snd_m3_assp_write(chip, MEMTYPE_INTERNAL_DATA,
2144                           KDATA_DAC_LEFT_VOLUME, ARB_VOLUME);
2145         snd_m3_assp_write(chip, MEMTYPE_INTERNAL_DATA,
2146                           KDATA_DAC_RIGHT_VOLUME, ARB_VOLUME);
2147 
2148         chip->mixer_list.curlen = 0;
2149         chip->mixer_list.mem_addr = KDATA_MIXER_XFER0;
2150         chip->mixer_list.max = MAX_VIRTUAL_MIXER_CHANNELS;
2151         chip->adc1_list.curlen = 0;
2152         chip->adc1_list.mem_addr = KDATA_ADC1_XFER0;
2153         chip->adc1_list.max = MAX_VIRTUAL_ADC1_CHANNELS;
2154         chip->dma_list.curlen = 0;
2155         chip->dma_list.mem_addr = KDATA_DMA_XFER0;
2156         chip->dma_list.max = MAX_VIRTUAL_DMA_CHANNELS;
2157         chip->msrc_list.curlen = 0;
2158         chip->msrc_list.mem_addr = KDATA_INSTANCE0_MINISRC;
2159         chip->msrc_list.max = MAX_INSTANCE_MINISRC;
2160 }
2161 
2162 
2163 static int snd_m3_assp_client_init(struct snd_m3 *chip, struct m3_dma *s, int index)
2164 {
2165         int data_bytes = 2 * ( MINISRC_TMP_BUFFER_SIZE / 2 + 
2166                                MINISRC_IN_BUFFER_SIZE / 2 +
2167                                1 + MINISRC_OUT_BUFFER_SIZE / 2 + 1 );
2168         int address, i;
2169 
2170         /*
2171          * the revb memory map has 0x1100 through 0x1c00
2172          * free.  
2173          */
2174 
2175         /*
2176          * align instance address to 256 bytes so that its
2177          * shifted list address is aligned.
2178          * list address = (mem address >> 1) >> 7;
2179          */
2180         data_bytes = ALIGN(data_bytes, 256);
2181         address = 0x1100 + ((data_bytes/2) * index);
2182 
2183         if ((address + (data_bytes/2)) >= 0x1c00) {
2184                 dev_err(chip->card->dev,
2185                         "no memory for %d bytes at ind %d (addr 0x%x)\n",
2186                            data_bytes, index, address);
2187                 return -ENOMEM;
2188         }
2189 
2190         s->number = index;
2191         s->inst.code = 0x400;
2192         s->inst.data = address;
2193 
2194         for (i = data_bytes / 2; i > 0; address++, i--) {
2195                 snd_m3_assp_write(chip, MEMTYPE_INTERNAL_DATA,
2196                                   address, 0);
2197         }
2198 
2199         return 0;
2200 }
2201 
2202 
2203 /* 
2204  * this works for the reference board, have to find
2205  * out about others
2206  *
2207  * this needs more magic for 4 speaker, but..
2208  */
2209 static void
2210 snd_m3_amp_enable(struct snd_m3 *chip, int enable)
2211 {
2212         int io = chip->iobase;
2213         u16 gpo, polarity;
2214 
2215         if (! chip->external_amp)
2216                 return;
2217 
2218         polarity = enable ? 0 : 1;
2219         polarity = polarity << chip->amp_gpio;
2220         gpo = 1 << chip->amp_gpio;
2221 
2222         outw(~gpo, io + GPIO_MASK);
2223 
2224         outw(inw(io + GPIO_DIRECTION) | gpo,
2225              io + GPIO_DIRECTION);
2226 
2227         outw((GPO_SECONDARY_AC97 | GPO_PRIMARY_AC97 | polarity),
2228              io + GPIO_DATA);
2229 
2230         outw(0xffff, io + GPIO_MASK);
2231 }
2232 
2233 static void
2234 snd_m3_hv_init(struct snd_m3 *chip)
2235 {
2236         unsigned long io = chip->iobase;
2237         u16 val = GPI_VOL_DOWN | GPI_VOL_UP;
2238 
2239         if (!chip->is_omnibook)
2240                 return;
2241 
2242         /*
2243          * Volume buttons on some HP OmniBook laptops
2244          * require some GPIO magic to work correctly.
2245          */
2246         outw(0xffff, io + GPIO_MASK);
2247         outw(0x0000, io + GPIO_DATA);
2248 
2249         outw(~val, io + GPIO_MASK);
2250         outw(inw(io + GPIO_DIRECTION) & ~val, io + GPIO_DIRECTION);
2251         outw(val, io + GPIO_MASK);
2252 
2253         outw(0xffff, io + GPIO_MASK);
2254 }
2255 
2256 static int
2257 snd_m3_chip_init(struct snd_m3 *chip)
2258 {
2259         struct pci_dev *pcidev = chip->pci;
2260         unsigned long io = chip->iobase;
2261         u32 n;
2262         u16 w;
2263         u8 t; /* makes as much sense as 'n', no? */
2264 
2265         pci_read_config_word(pcidev, PCI_LEGACY_AUDIO_CTRL, &w);
2266         w &= ~(SOUND_BLASTER_ENABLE|FM_SYNTHESIS_ENABLE|
2267                MPU401_IO_ENABLE|MPU401_IRQ_ENABLE|ALIAS_10BIT_IO|
2268                DISABLE_LEGACY);
2269         pci_write_config_word(pcidev, PCI_LEGACY_AUDIO_CTRL, w);
2270 
2271         pci_read_config_dword(pcidev, PCI_ALLEGRO_CONFIG, &n);
2272         n &= ~(HV_CTRL_ENABLE | REDUCED_DEBOUNCE | HV_BUTTON_FROM_GD);
2273         n |= chip->hv_config;
2274         /* For some reason we must always use reduced debounce. */
2275         n |= REDUCED_DEBOUNCE;
2276         n |= PM_CTRL_ENABLE | CLK_DIV_BY_49 | USE_PCI_TIMING;
2277         pci_write_config_dword(pcidev, PCI_ALLEGRO_CONFIG, n);
2278 
2279         outb(RESET_ASSP, chip->iobase + ASSP_CONTROL_B);
2280         pci_read_config_dword(pcidev, PCI_ALLEGRO_CONFIG, &n);
2281         n &= ~INT_CLK_SELECT;
2282         if (!chip->allegro_flag) {
2283                 n &= ~INT_CLK_MULT_ENABLE; 
2284                 n |= INT_CLK_SRC_NOT_PCI;
2285         }
2286         n &=  ~( CLK_MULT_MODE_SELECT | CLK_MULT_MODE_SELECT_2 );
2287         pci_write_config_dword(pcidev, PCI_ALLEGRO_CONFIG, n);
2288 
2289         if (chip->allegro_flag) {
2290                 pci_read_config_dword(pcidev, PCI_USER_CONFIG, &n);
2291                 n |= IN_CLK_12MHZ_SELECT;
2292                 pci_write_config_dword(pcidev, PCI_USER_CONFIG, n);
2293         }
2294 
2295         t = inb(chip->iobase + ASSP_CONTROL_A);
2296         t &= ~( DSP_CLK_36MHZ_SELECT  | ASSP_CLK_49MHZ_SELECT);
2297         t |= ASSP_CLK_49MHZ_SELECT;
2298         t |= ASSP_0_WS_ENABLE; 
2299         outb(t, chip->iobase + ASSP_CONTROL_A);
2300 
2301         snd_m3_assp_init(chip); /* download DSP code before starting ASSP below */
2302         outb(RUN_ASSP, chip->iobase + ASSP_CONTROL_B); 
2303 
2304         outb(0x00, io + HARDWARE_VOL_CTRL);
2305         outb(0x88, io + SHADOW_MIX_REG_VOICE);
2306         outb(0x88, io + HW_VOL_COUNTER_VOICE);
2307         outb(0x88, io + SHADOW_MIX_REG_MASTER);
2308         outb(0x88, io + HW_VOL_COUNTER_MASTER);
2309 
2310         return 0;
2311 } 
2312 
2313 static void
2314 snd_m3_enable_ints(struct snd_m3 *chip)
2315 {
2316         unsigned long io = chip->iobase;
2317         unsigned short val;
2318 
2319         /* TODO: MPU401 not supported yet */
2320         val = ASSP_INT_ENABLE /*| MPU401_INT_ENABLE*/;
2321         if (chip->hv_config & HV_CTRL_ENABLE)
2322                 val |= HV_INT_ENABLE;
2323         outb(val, chip->iobase + HOST_INT_STATUS);
2324         outw(val, io + HOST_INT_CTRL);
2325         outb(inb(io + ASSP_CONTROL_C) | ASSP_HOST_INT_ENABLE,
2326              io + ASSP_CONTROL_C);
2327 }
2328 
2329 
2330 /*
2331  */
2332 
2333 static void snd_m3_free(struct snd_card *card)
2334 {
2335         struct snd_m3 *chip = card->private_data;
2336         struct m3_dma *s;
2337         int i;
2338 
2339         cancel_work_sync(&chip->hwvol_work);
2340 
2341         if (chip->substreams) {
2342                 spin_lock_irq(&chip->reg_lock);
2343                 for (i = 0; i < chip->num_substreams; i++) {
2344                         s = &chip->substreams[i];
2345                         /* check surviving pcms; this should not happen though.. */
2346                         if (s->substream && s->running)
2347                                 snd_m3_pcm_stop(chip, s, s->substream);
2348                 }
2349                 spin_unlock_irq(&chip->reg_lock);
2350         }
2351         if (chip->iobase) {
2352                 outw(0, chip->iobase + HOST_INT_CTRL); /* disable ints */
2353         }
2354 
2355         vfree(chip->suspend_mem);
2356         release_firmware(chip->assp_kernel_image);
2357         release_firmware(chip->assp_minisrc_image);
2358 }
2359 
2360 
2361 /*
2362  * APM support
2363  */
2364 static int m3_suspend(struct device *dev)
2365 {
2366         struct snd_card *card = dev_get_drvdata(dev);
2367         struct snd_m3 *chip = card->private_data;
2368         int i, dsp_index;
2369 
2370         if (chip->suspend_mem == NULL)
2371                 return 0;
2372 
2373         chip->in_suspend = 1;
2374         cancel_work_sync(&chip->hwvol_work);
2375         snd_power_change_state(card, SNDRV_CTL_POWER_D3hot);
2376         snd_ac97_suspend(chip->ac97);
2377 
2378         msleep(10); /* give the assp a chance to idle.. */
2379 
2380         snd_m3_assp_halt(chip);
2381 
2382         /* save dsp image */
2383         dsp_index = 0;
2384         for (i = REV_B_CODE_MEMORY_BEGIN; i <= REV_B_CODE_MEMORY_END; i++)
2385                 chip->suspend_mem[dsp_index++] =
2386                         snd_m3_assp_read(chip, MEMTYPE_INTERNAL_CODE, i);
2387         for (i = REV_B_DATA_MEMORY_BEGIN ; i <= REV_B_DATA_MEMORY_END; i++)
2388                 chip->suspend_mem[dsp_index++] =
2389                         snd_m3_assp_read(chip, MEMTYPE_INTERNAL_DATA, i);
2390         return 0;
2391 }
2392 
2393 static int m3_resume(struct device *dev)
2394 {
2395         struct snd_card *card = dev_get_drvdata(dev);
2396         struct snd_m3 *chip = card->private_data;
2397         int i, dsp_index;
2398 
2399         if (chip->suspend_mem == NULL)
2400                 return 0;
2401 
2402         /* first lets just bring everything back. .*/
2403         snd_m3_outw(chip, 0, 0x54);
2404         snd_m3_outw(chip, 0, 0x56);
2405 
2406         snd_m3_chip_init(chip);
2407         snd_m3_assp_halt(chip);
2408         snd_m3_ac97_reset(chip);
2409 
2410         /* restore dsp image */
2411         dsp_index = 0;
2412         for (i = REV_B_CODE_MEMORY_BEGIN; i <= REV_B_CODE_MEMORY_END; i++)
2413                 snd_m3_assp_write(chip, MEMTYPE_INTERNAL_CODE, i, 
2414                                   chip->suspend_mem[dsp_index++]);
2415         for (i = REV_B_DATA_MEMORY_BEGIN ; i <= REV_B_DATA_MEMORY_END; i++)
2416                 snd_m3_assp_write(chip, MEMTYPE_INTERNAL_DATA, i, 
2417                                   chip->suspend_mem[dsp_index++]);
2418 
2419         /* tell the dma engine to restart itself */
2420         snd_m3_assp_write(chip, MEMTYPE_INTERNAL_DATA, 
2421                           KDATA_DMA_ACTIVE, 0);
2422 
2423         /* restore ac97 registers */
2424         snd_ac97_resume(chip->ac97);
2425 
2426         snd_m3_assp_continue(chip);
2427         snd_m3_enable_ints(chip);
2428         snd_m3_amp_enable(chip, 1);
2429 
2430         snd_m3_hv_init(chip);
2431 
2432         snd_power_change_state(card, SNDRV_CTL_POWER_D0);
2433         chip->in_suspend = 0;
2434         return 0;
2435 }
2436 
2437 static DEFINE_SIMPLE_DEV_PM_OPS(m3_pm, m3_suspend, m3_resume);
2438 
2439 #ifdef CONFIG_SND_MAESTRO3_INPUT
2440 static int snd_m3_input_register(struct snd_m3 *chip)
2441 {
2442         struct input_dev *input_dev;
2443         int err;
2444 
2445         input_dev = devm_input_allocate_device(&chip->pci->dev);
2446         if (!input_dev)
2447                 return -ENOMEM;
2448 
2449         snprintf(chip->phys, sizeof(chip->phys), "pci-%s/input0",
2450                  pci_name(chip->pci));
2451 
2452         input_dev->name = chip->card->driver;
2453         input_dev->phys = chip->phys;
2454         input_dev->id.bustype = BUS_PCI;
2455         input_dev->id.vendor  = chip->pci->vendor;
2456         input_dev->id.product = chip->pci->device;
2457         input_dev->dev.parent = &chip->pci->dev;
2458 
2459         __set_bit(EV_KEY, input_dev->evbit);
2460         __set_bit(KEY_MUTE, input_dev->keybit);
2461         __set_bit(KEY_VOLUMEDOWN, input_dev->keybit);
2462         __set_bit(KEY_VOLUMEUP, input_dev->keybit);
2463 
2464         err = input_register_device(input_dev);
2465         if (err)
2466                 return err;
2467 
2468         chip->input_dev = input_dev;
2469         return 0;
2470 }
2471 #endif /* CONFIG_INPUT */
2472 
2473 /*
2474  */
2475 
2476 static int
2477 snd_m3_create(struct snd_card *card, struct pci_dev *pci,
2478               int enable_amp,
2479               int amp_gpio)
2480 {
2481         struct snd_m3 *chip = card->private_data;
2482         int i, err;
2483         const struct snd_pci_quirk *quirk;
2484 
2485         if (pcim_enable_device(pci))
2486                 return -EIO;
2487 
2488         /* check, if we can restrict PCI DMA transfers to 28 bits */
2489         if (dma_set_mask_and_coherent(&pci->dev, DMA_BIT_MASK(28))) {
2490                 dev_err(card->dev,
2491                         "architecture does not support 28bit PCI busmaster DMA\n");
2492                 return -ENXIO;
2493         }
2494 
2495         spin_lock_init(&chip->reg_lock);
2496 
2497         switch (pci->device) {
2498         case PCI_DEVICE_ID_ESS_ALLEGRO:
2499         case PCI_DEVICE_ID_ESS_ALLEGRO_1:
2500         case PCI_DEVICE_ID_ESS_CANYON3D_2LE:
2501         case PCI_DEVICE_ID_ESS_CANYON3D_2:
2502                 chip->allegro_flag = 1;
2503                 break;
2504         }
2505 
2506         chip->card = card;
2507         chip->pci = pci;
2508         chip->irq = -1;
2509         INIT_WORK(&chip->hwvol_work, snd_m3_update_hw_volume);
2510         card->private_free = snd_m3_free;
2511 
2512         chip->external_amp = enable_amp;
2513         if (amp_gpio >= 0 && amp_gpio <= 0x0f)
2514                 chip->amp_gpio = amp_gpio;
2515         else {
2516                 quirk = snd_pci_quirk_lookup(pci, m3_amp_quirk_list);
2517                 if (quirk) {
2518                         dev_info(card->dev, "set amp-gpio for '%s'\n",
2519                                  snd_pci_quirk_name(quirk));
2520                         chip->amp_gpio = quirk->value;
2521                 } else if (chip->allegro_flag)
2522                         chip->amp_gpio = GPO_EXT_AMP_ALLEGRO;
2523                 else /* presumably this is for all 'maestro3's.. */
2524                         chip->amp_gpio = GPO_EXT_AMP_M3;
2525         }
2526 
2527         quirk = snd_pci_quirk_lookup(pci, m3_irda_quirk_list);
2528         if (quirk) {
2529                 dev_info(card->dev, "enabled irda workaround for '%s'\n",
2530                          snd_pci_quirk_name(quirk));
2531                 chip->irda_workaround = 1;
2532         }
2533         quirk = snd_pci_quirk_lookup(pci, m3_hv_quirk_list);
2534         if (quirk)
2535                 chip->hv_config = quirk->value;
2536         if (snd_pci_quirk_lookup(pci, m3_omnibook_quirk_list))
2537                 chip->is_omnibook = 1;
2538 
2539         chip->num_substreams = NR_DSPS;
2540         chip->substreams = devm_kcalloc(&pci->dev, chip->num_substreams,
2541                                         sizeof(struct m3_dma), GFP_KERNEL);
2542         if (!chip->substreams)
2543                 return -ENOMEM;
2544 
2545         err = request_firmware(&chip->assp_kernel_image,
2546                                "ess/maestro3_assp_kernel.fw", &pci->dev);
2547         if (err < 0)
2548                 return err;
2549 
2550         err = request_firmware(&chip->assp_minisrc_image,
2551                                "ess/maestro3_assp_minisrc.fw", &pci->dev);
2552         if (err < 0)
2553                 return err;
2554 
2555         err = pci_request_regions(pci, card->driver);
2556         if (err < 0)
2557                 return err;
2558 
2559         chip->iobase = pci_resource_start(pci, 0);
2560         
2561         /* just to be sure */
2562         pci_set_master(pci);
2563 
2564         snd_m3_chip_init(chip);
2565         snd_m3_assp_halt(chip);
2566 
2567         snd_m3_ac97_reset(chip);
2568 
2569         snd_m3_amp_enable(chip, 1);
2570 
2571         snd_m3_hv_init(chip);
2572 
2573         if (devm_request_irq(&pci->dev, pci->irq, snd_m3_interrupt, IRQF_SHARED,
2574                              KBUILD_MODNAME, chip)) {
2575                 dev_err(card->dev, "unable to grab IRQ %d\n", pci->irq);
2576                 return -ENOMEM;
2577         }
2578         chip->irq = pci->irq;
2579         card->sync_irq = chip->irq;
2580 
2581         if (IS_ENABLED(CONFIG_PM_SLEEP)) {
2582                 chip->suspend_mem =
2583                         vmalloc(array_size(sizeof(u16),
2584                                            REV_B_CODE_MEMORY_LENGTH +
2585                                            REV_B_DATA_MEMORY_LENGTH));
2586                 if (!chip->suspend_mem)
2587                         dev_warn(card->dev, "can't allocate apm buffer\n");
2588         }
2589 
2590         err = snd_m3_mixer(chip);
2591         if (err < 0)
2592                 return err;
2593 
2594         for (i = 0; i < chip->num_substreams; i++) {
2595                 struct m3_dma *s = &chip->substreams[i];
2596                 err = snd_m3_assp_client_init(chip, s, i);
2597                 if (err < 0)
2598                         return err;
2599         }
2600 
2601         err = snd_m3_pcm(chip, 0);
2602         if (err < 0)
2603                 return err;
2604 
2605 #ifdef CONFIG_SND_MAESTRO3_INPUT
2606         if (chip->hv_config & HV_CTRL_ENABLE) {
2607                 err = snd_m3_input_register(chip);
2608                 if (err)
2609                         dev_warn(card->dev,
2610                                  "Input device registration failed with error %i",
2611                                  err);
2612         }
2613 #endif
2614 
2615         snd_m3_enable_ints(chip);
2616         snd_m3_assp_continue(chip);
2617 
2618         return 0; 
2619 }
2620 
2621 /*
2622  */
2623 static int
2624 __snd_m3_probe(struct pci_dev *pci, const struct pci_device_id *pci_id)
2625 {
2626         static int dev;
2627         struct snd_card *card;
2628         struct snd_m3 *chip;
2629         int err;
2630 
2631         /* don't pick up modems */
2632         if (((pci->class >> 8) & 0xffff) != PCI_CLASS_MULTIMEDIA_AUDIO)
2633                 return -ENODEV;
2634 
2635         if (dev >= SNDRV_CARDS)
2636                 return -ENODEV;
2637         if (!enable[dev]) {
2638                 dev++;
2639                 return -ENOENT;
2640         }
2641 
2642         err = snd_devm_card_new(&pci->dev, index[dev], id[dev], THIS_MODULE,
2643                                 sizeof(*chip), &card);
2644         if (err < 0)
2645                 return err;
2646         chip = card->private_data;
2647 
2648         switch (pci->device) {
2649         case PCI_DEVICE_ID_ESS_ALLEGRO:
2650         case PCI_DEVICE_ID_ESS_ALLEGRO_1:
2651                 strcpy(card->driver, "Allegro");
2652                 break;
2653         case PCI_DEVICE_ID_ESS_CANYON3D_2LE:
2654         case PCI_DEVICE_ID_ESS_CANYON3D_2:
2655                 strcpy(card->driver, "Canyon3D-2");
2656                 break;
2657         default:
2658                 strcpy(card->driver, "Maestro3");
2659                 break;
2660         }
2661 
2662         err = snd_m3_create(card, pci, external_amp[dev], amp_gpio[dev]);
2663         if (err < 0)
2664                 return err;
2665 
2666         sprintf(card->shortname, "ESS %s PCI", card->driver);
2667         sprintf(card->longname, "%s at 0x%lx, irq %d",
2668                 card->shortname, chip->iobase, chip->irq);
2669 
2670         err = snd_card_register(card);
2671         if (err < 0)
2672                 return err;
2673 
2674 #if 0 /* TODO: not supported yet */
2675         /* TODO enable MIDI IRQ and I/O */
2676         err = snd_mpu401_uart_new(chip->card, 0, MPU401_HW_MPU401,
2677                                   chip->iobase + MPU401_DATA_PORT,
2678                                   MPU401_INFO_INTEGRATED | MPU401_INFO_IRQ_HOOK,
2679                                   -1, &chip->rmidi);
2680         if (err < 0)
2681                 dev_warn(card->dev, "no MIDI support.\n");
2682 #endif
2683 
2684         pci_set_drvdata(pci, card);
2685         dev++;
2686         return 0;
2687 }
2688 
2689 static int
2690 snd_m3_probe(struct pci_dev *pci, const struct pci_device_id *pci_id)
2691 {
2692         return snd_card_free_on_error(&pci->dev, __snd_m3_probe(pci, pci_id));
2693 }
2694 
2695 static struct pci_driver m3_driver = {
2696         .name = KBUILD_MODNAME,
2697         .id_table = snd_m3_ids,
2698         .probe = snd_m3_probe,
2699         .driver = {
2700                 .pm = &m3_pm,
2701         },
2702 };
2703         
2704 module_pci_driver(m3_driver);
2705 

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