1 | // SPDX-License-Identifier: GPL-2.0-or-later |
2 | /* |
3 | * ALSA driver for ATI IXP 150/200/250 AC97 modem controllers |
4 | * |
5 | * Copyright (c) 2004 Takashi Iwai <tiwai@suse.de> |
6 | */ |
7 | |
8 | #include <linux/io.h> |
9 | #include <linux/delay.h> |
10 | #include <linux/interrupt.h> |
11 | #include <linux/init.h> |
12 | #include <linux/pci.h> |
13 | #include <linux/slab.h> |
14 | #include <linux/module.h> |
15 | #include <linux/mutex.h> |
16 | #include <sound/core.h> |
17 | #include <sound/pcm.h> |
18 | #include <sound/pcm_params.h> |
19 | #include <sound/info.h> |
20 | #include <sound/ac97_codec.h> |
21 | #include <sound/initval.h> |
22 | |
23 | MODULE_AUTHOR("Takashi Iwai <tiwai@suse.de>" ); |
24 | MODULE_DESCRIPTION("ATI IXP MC97 controller" ); |
25 | MODULE_LICENSE("GPL" ); |
26 | |
27 | static int index = -2; /* Exclude the first card */ |
28 | static char *id = SNDRV_DEFAULT_STR1; /* ID for this card */ |
29 | static int ac97_clock = 48000; |
30 | |
31 | module_param(index, int, 0444); |
32 | MODULE_PARM_DESC(index, "Index value for ATI IXP controller." ); |
33 | module_param(id, charp, 0444); |
34 | MODULE_PARM_DESC(id, "ID string for ATI IXP controller." ); |
35 | module_param(ac97_clock, int, 0444); |
36 | MODULE_PARM_DESC(ac97_clock, "AC'97 codec clock (default 48000Hz)." ); |
37 | |
38 | /* just for backward compatibility */ |
39 | static bool enable; |
40 | module_param(enable, bool, 0444); |
41 | |
42 | |
43 | /* |
44 | */ |
45 | |
46 | #define ATI_REG_ISR 0x00 /* interrupt source */ |
47 | #define ATI_REG_ISR_MODEM_IN_XRUN (1U<<0) |
48 | #define ATI_REG_ISR_MODEM_IN_STATUS (1U<<1) |
49 | #define ATI_REG_ISR_MODEM_OUT1_XRUN (1U<<2) |
50 | #define ATI_REG_ISR_MODEM_OUT1_STATUS (1U<<3) |
51 | #define ATI_REG_ISR_MODEM_OUT2_XRUN (1U<<4) |
52 | #define ATI_REG_ISR_MODEM_OUT2_STATUS (1U<<5) |
53 | #define ATI_REG_ISR_MODEM_OUT3_XRUN (1U<<6) |
54 | #define ATI_REG_ISR_MODEM_OUT3_STATUS (1U<<7) |
55 | #define ATI_REG_ISR_PHYS_INTR (1U<<8) |
56 | #define ATI_REG_ISR_PHYS_MISMATCH (1U<<9) |
57 | #define ATI_REG_ISR_CODEC0_NOT_READY (1U<<10) |
58 | #define ATI_REG_ISR_CODEC1_NOT_READY (1U<<11) |
59 | #define ATI_REG_ISR_CODEC2_NOT_READY (1U<<12) |
60 | #define ATI_REG_ISR_NEW_FRAME (1U<<13) |
61 | #define ATI_REG_ISR_MODEM_GPIO_DATA (1U<<14) |
62 | |
63 | #define ATI_REG_IER 0x04 /* interrupt enable */ |
64 | #define ATI_REG_IER_MODEM_IN_XRUN_EN (1U<<0) |
65 | #define ATI_REG_IER_MODEM_STATUS_EN (1U<<1) |
66 | #define ATI_REG_IER_MODEM_OUT1_XRUN_EN (1U<<2) |
67 | #define ATI_REG_IER_MODEM_OUT2_XRUN_EN (1U<<4) |
68 | #define ATI_REG_IER_MODEM_OUT3_XRUN_EN (1U<<6) |
69 | #define ATI_REG_IER_PHYS_INTR_EN (1U<<8) |
70 | #define ATI_REG_IER_PHYS_MISMATCH_EN (1U<<9) |
71 | #define ATI_REG_IER_CODEC0_INTR_EN (1U<<10) |
72 | #define ATI_REG_IER_CODEC1_INTR_EN (1U<<11) |
73 | #define ATI_REG_IER_CODEC2_INTR_EN (1U<<12) |
74 | #define ATI_REG_IER_NEW_FRAME_EN (1U<<13) /* (RO */ |
75 | #define ATI_REG_IER_MODEM_GPIO_DATA_EN (1U<<14) /* (WO) modem is running */ |
76 | #define ATI_REG_IER_MODEM_SET_BUS_BUSY (1U<<15) |
77 | |
78 | #define ATI_REG_CMD 0x08 /* command */ |
79 | #define ATI_REG_CMD_POWERDOWN (1U<<0) |
80 | #define ATI_REG_CMD_MODEM_RECEIVE_EN (1U<<1) /* modem only */ |
81 | #define ATI_REG_CMD_MODEM_SEND1_EN (1U<<2) /* modem only */ |
82 | #define ATI_REG_CMD_MODEM_SEND2_EN (1U<<3) /* modem only */ |
83 | #define ATI_REG_CMD_MODEM_SEND3_EN (1U<<4) /* modem only */ |
84 | #define ATI_REG_CMD_MODEM_STATUS_MEM (1U<<5) /* modem only */ |
85 | #define ATI_REG_CMD_MODEM_IN_DMA_EN (1U<<8) /* modem only */ |
86 | #define ATI_REG_CMD_MODEM_OUT_DMA1_EN (1U<<9) /* modem only */ |
87 | #define ATI_REG_CMD_MODEM_OUT_DMA2_EN (1U<<10) /* modem only */ |
88 | #define ATI_REG_CMD_MODEM_OUT_DMA3_EN (1U<<11) /* modem only */ |
89 | #define ATI_REG_CMD_AUDIO_PRESENT (1U<<20) |
90 | #define ATI_REG_CMD_MODEM_GPIO_THRU_DMA (1U<<22) /* modem only */ |
91 | #define ATI_REG_CMD_LOOPBACK_EN (1U<<23) |
92 | #define ATI_REG_CMD_PACKED_DIS (1U<<24) |
93 | #define ATI_REG_CMD_BURST_EN (1U<<25) |
94 | #define ATI_REG_CMD_PANIC_EN (1U<<26) |
95 | #define ATI_REG_CMD_MODEM_PRESENT (1U<<27) |
96 | #define ATI_REG_CMD_ACLINK_ACTIVE (1U<<28) |
97 | #define ATI_REG_CMD_AC_SOFT_RESET (1U<<29) |
98 | #define ATI_REG_CMD_AC_SYNC (1U<<30) |
99 | #define ATI_REG_CMD_AC_RESET (1U<<31) |
100 | |
101 | #define ATI_REG_PHYS_OUT_ADDR 0x0c |
102 | #define ATI_REG_PHYS_OUT_CODEC_MASK (3U<<0) |
103 | #define ATI_REG_PHYS_OUT_RW (1U<<2) |
104 | #define ATI_REG_PHYS_OUT_ADDR_EN (1U<<8) |
105 | #define ATI_REG_PHYS_OUT_ADDR_SHIFT 9 |
106 | #define ATI_REG_PHYS_OUT_DATA_SHIFT 16 |
107 | |
108 | #define ATI_REG_PHYS_IN_ADDR 0x10 |
109 | #define ATI_REG_PHYS_IN_READ_FLAG (1U<<8) |
110 | #define ATI_REG_PHYS_IN_ADDR_SHIFT 9 |
111 | #define ATI_REG_PHYS_IN_DATA_SHIFT 16 |
112 | |
113 | #define ATI_REG_SLOTREQ 0x14 |
114 | |
115 | #define ATI_REG_COUNTER 0x18 |
116 | #define ATI_REG_COUNTER_SLOT (3U<<0) /* slot # */ |
117 | #define ATI_REG_COUNTER_BITCLOCK (31U<<8) |
118 | |
119 | #define ATI_REG_IN_FIFO_THRESHOLD 0x1c |
120 | |
121 | #define ATI_REG_MODEM_IN_DMA_LINKPTR 0x20 |
122 | #define ATI_REG_MODEM_IN_DMA_DT_START 0x24 /* RO */ |
123 | #define ATI_REG_MODEM_IN_DMA_DT_NEXT 0x28 /* RO */ |
124 | #define ATI_REG_MODEM_IN_DMA_DT_CUR 0x2c /* RO */ |
125 | #define ATI_REG_MODEM_IN_DMA_DT_SIZE 0x30 |
126 | #define ATI_REG_MODEM_OUT_FIFO 0x34 /* output threshold */ |
127 | #define ATI_REG_MODEM_OUT1_DMA_THRESHOLD_MASK (0xf<<16) |
128 | #define ATI_REG_MODEM_OUT1_DMA_THRESHOLD_SHIFT 16 |
129 | #define ATI_REG_MODEM_OUT_DMA1_LINKPTR 0x38 |
130 | #define ATI_REG_MODEM_OUT_DMA2_LINKPTR 0x3c |
131 | #define ATI_REG_MODEM_OUT_DMA3_LINKPTR 0x40 |
132 | #define ATI_REG_MODEM_OUT_DMA1_DT_START 0x44 |
133 | #define ATI_REG_MODEM_OUT_DMA1_DT_NEXT 0x48 |
134 | #define ATI_REG_MODEM_OUT_DMA1_DT_CUR 0x4c |
135 | #define ATI_REG_MODEM_OUT_DMA2_DT_START 0x50 |
136 | #define ATI_REG_MODEM_OUT_DMA2_DT_NEXT 0x54 |
137 | #define ATI_REG_MODEM_OUT_DMA2_DT_CUR 0x58 |
138 | #define ATI_REG_MODEM_OUT_DMA3_DT_START 0x5c |
139 | #define ATI_REG_MODEM_OUT_DMA3_DT_NEXT 0x60 |
140 | #define ATI_REG_MODEM_OUT_DMA3_DT_CUR 0x64 |
141 | #define ATI_REG_MODEM_OUT_DMA12_DT_SIZE 0x68 |
142 | #define ATI_REG_MODEM_OUT_DMA3_DT_SIZE 0x6c |
143 | #define ATI_REG_MODEM_OUT_FIFO_USED 0x70 |
144 | #define ATI_REG_MODEM_OUT_GPIO 0x74 |
145 | #define ATI_REG_MODEM_OUT_GPIO_EN 1 |
146 | #define ATI_REG_MODEM_OUT_GPIO_DATA_SHIFT 5 |
147 | #define ATI_REG_MODEM_IN_GPIO 0x78 |
148 | |
149 | #define ATI_REG_MODEM_MIRROR 0x7c |
150 | #define ATI_REG_AUDIO_MIRROR 0x80 |
151 | |
152 | #define ATI_REG_MODEM_FIFO_FLUSH 0x88 |
153 | #define ATI_REG_MODEM_FIFO_OUT1_FLUSH (1U<<0) |
154 | #define ATI_REG_MODEM_FIFO_OUT2_FLUSH (1U<<1) |
155 | #define ATI_REG_MODEM_FIFO_OUT3_FLUSH (1U<<2) |
156 | #define ATI_REG_MODEM_FIFO_IN_FLUSH (1U<<3) |
157 | |
158 | /* LINKPTR */ |
159 | #define ATI_REG_LINKPTR_EN (1U<<0) |
160 | |
161 | #define ATI_MAX_DESCRIPTORS 256 /* max number of descriptor packets */ |
162 | |
163 | |
164 | struct atiixp_modem; |
165 | |
166 | /* |
167 | * DMA packate descriptor |
168 | */ |
169 | |
170 | struct atiixp_dma_desc { |
171 | __le32 addr; /* DMA buffer address */ |
172 | u16 status; /* status bits */ |
173 | u16 size; /* size of the packet in dwords */ |
174 | __le32 next; /* address of the next packet descriptor */ |
175 | }; |
176 | |
177 | /* |
178 | * stream enum |
179 | */ |
180 | enum { ATI_DMA_PLAYBACK, ATI_DMA_CAPTURE, NUM_ATI_DMAS }; /* DMAs */ |
181 | enum { ATI_PCM_OUT, ATI_PCM_IN, NUM_ATI_PCMS }; /* AC97 pcm slots */ |
182 | enum { ATI_PCMDEV_ANALOG, NUM_ATI_PCMDEVS }; /* pcm devices */ |
183 | |
184 | #define NUM_ATI_CODECS 3 |
185 | |
186 | |
187 | /* |
188 | * constants and callbacks for each DMA type |
189 | */ |
190 | struct atiixp_dma_ops { |
191 | int type; /* ATI_DMA_XXX */ |
192 | unsigned int llp_offset; /* LINKPTR offset */ |
193 | unsigned int dt_cur; /* DT_CUR offset */ |
194 | /* called from open callback */ |
195 | void (*enable_dma)(struct atiixp_modem *chip, int on); |
196 | /* called from trigger (START/STOP) */ |
197 | void (*enable_transfer)(struct atiixp_modem *chip, int on); |
198 | /* called from trigger (STOP only) */ |
199 | void (*flush_dma)(struct atiixp_modem *chip); |
200 | }; |
201 | |
202 | /* |
203 | * DMA stream |
204 | */ |
205 | struct atiixp_dma { |
206 | const struct atiixp_dma_ops *ops; |
207 | struct snd_dma_buffer desc_buf; |
208 | struct snd_pcm_substream *substream; /* assigned PCM substream */ |
209 | unsigned int buf_addr, buf_bytes; /* DMA buffer address, bytes */ |
210 | unsigned int period_bytes, periods; |
211 | int opened; |
212 | int running; |
213 | int pcm_open_flag; |
214 | int ac97_pcm_type; /* index # of ac97_pcm to access, -1 = not used */ |
215 | }; |
216 | |
217 | /* |
218 | * ATI IXP chip |
219 | */ |
220 | struct atiixp_modem { |
221 | struct snd_card *card; |
222 | struct pci_dev *pci; |
223 | |
224 | struct resource *res; /* memory i/o */ |
225 | unsigned long addr; |
226 | void __iomem *remap_addr; |
227 | int irq; |
228 | |
229 | struct snd_ac97_bus *ac97_bus; |
230 | struct snd_ac97 *ac97[NUM_ATI_CODECS]; |
231 | |
232 | spinlock_t reg_lock; |
233 | |
234 | struct atiixp_dma dmas[NUM_ATI_DMAS]; |
235 | struct ac97_pcm *pcms[NUM_ATI_PCMS]; |
236 | struct snd_pcm *pcmdevs[NUM_ATI_PCMDEVS]; |
237 | |
238 | int max_channels; /* max. channels for PCM out */ |
239 | |
240 | unsigned int codec_not_ready_bits; /* for codec detection */ |
241 | |
242 | int spdif_over_aclink; /* passed from the module option */ |
243 | struct mutex open_mutex; /* playback open mutex */ |
244 | }; |
245 | |
246 | |
247 | /* |
248 | */ |
249 | static const struct pci_device_id snd_atiixp_ids[] = { |
250 | { PCI_VDEVICE(ATI, 0x434d), 0 }, /* SB200 */ |
251 | { PCI_VDEVICE(ATI, 0x4378), 0 }, /* SB400 */ |
252 | { 0, } |
253 | }; |
254 | |
255 | MODULE_DEVICE_TABLE(pci, snd_atiixp_ids); |
256 | |
257 | |
258 | /* |
259 | * lowlevel functions |
260 | */ |
261 | |
262 | /* |
263 | * update the bits of the given register. |
264 | * return 1 if the bits changed. |
265 | */ |
266 | static int snd_atiixp_update_bits(struct atiixp_modem *chip, unsigned int reg, |
267 | unsigned int mask, unsigned int value) |
268 | { |
269 | void __iomem *addr = chip->remap_addr + reg; |
270 | unsigned int data, old_data; |
271 | old_data = data = readl(addr); |
272 | data &= ~mask; |
273 | data |= value; |
274 | if (old_data == data) |
275 | return 0; |
276 | writel(val: data, addr); |
277 | return 1; |
278 | } |
279 | |
280 | /* |
281 | * macros for easy use |
282 | */ |
283 | #define atiixp_write(chip,reg,value) \ |
284 | writel(value, chip->remap_addr + ATI_REG_##reg) |
285 | #define atiixp_read(chip,reg) \ |
286 | readl(chip->remap_addr + ATI_REG_##reg) |
287 | #define atiixp_update(chip,reg,mask,val) \ |
288 | snd_atiixp_update_bits(chip, ATI_REG_##reg, mask, val) |
289 | |
290 | /* |
291 | * handling DMA packets |
292 | * |
293 | * we allocate a linear buffer for the DMA, and split it to each packet. |
294 | * in a future version, a scatter-gather buffer should be implemented. |
295 | */ |
296 | |
297 | #define ATI_DESC_LIST_SIZE \ |
298 | PAGE_ALIGN(ATI_MAX_DESCRIPTORS * sizeof(struct atiixp_dma_desc)) |
299 | |
300 | /* |
301 | * build packets ring for the given buffer size. |
302 | * |
303 | * IXP handles the buffer descriptors, which are connected as a linked |
304 | * list. although we can change the list dynamically, in this version, |
305 | * a static RING of buffer descriptors is used. |
306 | * |
307 | * the ring is built in this function, and is set up to the hardware. |
308 | */ |
309 | static int atiixp_build_dma_packets(struct atiixp_modem *chip, |
310 | struct atiixp_dma *dma, |
311 | struct snd_pcm_substream *substream, |
312 | unsigned int periods, |
313 | unsigned int period_bytes) |
314 | { |
315 | unsigned int i; |
316 | u32 addr, desc_addr; |
317 | unsigned long flags; |
318 | |
319 | if (periods > ATI_MAX_DESCRIPTORS) |
320 | return -ENOMEM; |
321 | |
322 | if (dma->desc_buf.area == NULL) { |
323 | if (snd_dma_alloc_pages(SNDRV_DMA_TYPE_DEV, dev: &chip->pci->dev, |
324 | ATI_DESC_LIST_SIZE, dmab: &dma->desc_buf) < 0) |
325 | return -ENOMEM; |
326 | dma->period_bytes = dma->periods = 0; /* clear */ |
327 | } |
328 | |
329 | if (dma->periods == periods && dma->period_bytes == period_bytes) |
330 | return 0; |
331 | |
332 | /* reset DMA before changing the descriptor table */ |
333 | spin_lock_irqsave(&chip->reg_lock, flags); |
334 | writel(val: 0, addr: chip->remap_addr + dma->ops->llp_offset); |
335 | dma->ops->enable_dma(chip, 0); |
336 | dma->ops->enable_dma(chip, 1); |
337 | spin_unlock_irqrestore(lock: &chip->reg_lock, flags); |
338 | |
339 | /* fill the entries */ |
340 | addr = (u32)substream->runtime->dma_addr; |
341 | desc_addr = (u32)dma->desc_buf.addr; |
342 | for (i = 0; i < periods; i++) { |
343 | struct atiixp_dma_desc *desc; |
344 | desc = &((struct atiixp_dma_desc *)dma->desc_buf.area)[i]; |
345 | desc->addr = cpu_to_le32(addr); |
346 | desc->status = 0; |
347 | desc->size = period_bytes >> 2; /* in dwords */ |
348 | desc_addr += sizeof(struct atiixp_dma_desc); |
349 | if (i == periods - 1) |
350 | desc->next = cpu_to_le32((u32)dma->desc_buf.addr); |
351 | else |
352 | desc->next = cpu_to_le32(desc_addr); |
353 | addr += period_bytes; |
354 | } |
355 | |
356 | writel(val: (u32)dma->desc_buf.addr | ATI_REG_LINKPTR_EN, |
357 | addr: chip->remap_addr + dma->ops->llp_offset); |
358 | |
359 | dma->period_bytes = period_bytes; |
360 | dma->periods = periods; |
361 | |
362 | return 0; |
363 | } |
364 | |
365 | /* |
366 | * remove the ring buffer and release it if assigned |
367 | */ |
368 | static void atiixp_clear_dma_packets(struct atiixp_modem *chip, |
369 | struct atiixp_dma *dma, |
370 | struct snd_pcm_substream *substream) |
371 | { |
372 | if (dma->desc_buf.area) { |
373 | writel(val: 0, addr: chip->remap_addr + dma->ops->llp_offset); |
374 | snd_dma_free_pages(dmab: &dma->desc_buf); |
375 | dma->desc_buf.area = NULL; |
376 | } |
377 | } |
378 | |
379 | /* |
380 | * AC97 interface |
381 | */ |
382 | static int snd_atiixp_acquire_codec(struct atiixp_modem *chip) |
383 | { |
384 | int timeout = 1000; |
385 | |
386 | while (atiixp_read(chip, PHYS_OUT_ADDR) & ATI_REG_PHYS_OUT_ADDR_EN) { |
387 | if (! timeout--) { |
388 | dev_warn(chip->card->dev, "codec acquire timeout\n" ); |
389 | return -EBUSY; |
390 | } |
391 | udelay(1); |
392 | } |
393 | return 0; |
394 | } |
395 | |
396 | static unsigned short snd_atiixp_codec_read(struct atiixp_modem *chip, |
397 | unsigned short codec, |
398 | unsigned short reg) |
399 | { |
400 | unsigned int data; |
401 | int timeout; |
402 | |
403 | if (snd_atiixp_acquire_codec(chip) < 0) |
404 | return 0xffff; |
405 | data = (reg << ATI_REG_PHYS_OUT_ADDR_SHIFT) | |
406 | ATI_REG_PHYS_OUT_ADDR_EN | |
407 | ATI_REG_PHYS_OUT_RW | |
408 | codec; |
409 | atiixp_write(chip, PHYS_OUT_ADDR, data); |
410 | if (snd_atiixp_acquire_codec(chip) < 0) |
411 | return 0xffff; |
412 | timeout = 1000; |
413 | do { |
414 | data = atiixp_read(chip, PHYS_IN_ADDR); |
415 | if (data & ATI_REG_PHYS_IN_READ_FLAG) |
416 | return data >> ATI_REG_PHYS_IN_DATA_SHIFT; |
417 | udelay(1); |
418 | } while (--timeout); |
419 | /* time out may happen during reset */ |
420 | if (reg < 0x7c) |
421 | dev_warn(chip->card->dev, "codec read timeout (reg %x)\n" , reg); |
422 | return 0xffff; |
423 | } |
424 | |
425 | |
426 | static void snd_atiixp_codec_write(struct atiixp_modem *chip, |
427 | unsigned short codec, |
428 | unsigned short reg, unsigned short val) |
429 | { |
430 | unsigned int data; |
431 | |
432 | if (snd_atiixp_acquire_codec(chip) < 0) |
433 | return; |
434 | data = ((unsigned int)val << ATI_REG_PHYS_OUT_DATA_SHIFT) | |
435 | ((unsigned int)reg << ATI_REG_PHYS_OUT_ADDR_SHIFT) | |
436 | ATI_REG_PHYS_OUT_ADDR_EN | codec; |
437 | atiixp_write(chip, PHYS_OUT_ADDR, data); |
438 | } |
439 | |
440 | |
441 | static unsigned short snd_atiixp_ac97_read(struct snd_ac97 *ac97, |
442 | unsigned short reg) |
443 | { |
444 | struct atiixp_modem *chip = ac97->private_data; |
445 | return snd_atiixp_codec_read(chip, codec: ac97->num, reg); |
446 | |
447 | } |
448 | |
449 | static void snd_atiixp_ac97_write(struct snd_ac97 *ac97, unsigned short reg, |
450 | unsigned short val) |
451 | { |
452 | struct atiixp_modem *chip = ac97->private_data; |
453 | if (reg == AC97_GPIO_STATUS) { |
454 | atiixp_write(chip, MODEM_OUT_GPIO, |
455 | (val << ATI_REG_MODEM_OUT_GPIO_DATA_SHIFT) | ATI_REG_MODEM_OUT_GPIO_EN); |
456 | return; |
457 | } |
458 | snd_atiixp_codec_write(chip, codec: ac97->num, reg, val); |
459 | } |
460 | |
461 | /* |
462 | * reset AC link |
463 | */ |
464 | static int snd_atiixp_aclink_reset(struct atiixp_modem *chip) |
465 | { |
466 | int timeout; |
467 | |
468 | /* reset powerdoewn */ |
469 | if (atiixp_update(chip, CMD, ATI_REG_CMD_POWERDOWN, 0)) |
470 | udelay(10); |
471 | |
472 | /* perform a software reset */ |
473 | atiixp_update(chip, CMD, ATI_REG_CMD_AC_SOFT_RESET, ATI_REG_CMD_AC_SOFT_RESET); |
474 | atiixp_read(chip, CMD); |
475 | udelay(10); |
476 | atiixp_update(chip, CMD, ATI_REG_CMD_AC_SOFT_RESET, 0); |
477 | |
478 | timeout = 10; |
479 | while (! (atiixp_read(chip, CMD) & ATI_REG_CMD_ACLINK_ACTIVE)) { |
480 | /* do a hard reset */ |
481 | atiixp_update(chip, CMD, ATI_REG_CMD_AC_SYNC|ATI_REG_CMD_AC_RESET, |
482 | ATI_REG_CMD_AC_SYNC); |
483 | atiixp_read(chip, CMD); |
484 | msleep(msecs: 1); |
485 | atiixp_update(chip, CMD, ATI_REG_CMD_AC_RESET, ATI_REG_CMD_AC_RESET); |
486 | if (!--timeout) { |
487 | dev_err(chip->card->dev, "codec reset timeout\n" ); |
488 | break; |
489 | } |
490 | } |
491 | |
492 | /* deassert RESET and assert SYNC to make sure */ |
493 | atiixp_update(chip, CMD, ATI_REG_CMD_AC_SYNC|ATI_REG_CMD_AC_RESET, |
494 | ATI_REG_CMD_AC_SYNC|ATI_REG_CMD_AC_RESET); |
495 | |
496 | return 0; |
497 | } |
498 | |
499 | static int snd_atiixp_aclink_down(struct atiixp_modem *chip) |
500 | { |
501 | // if (atiixp_read(chip, MODEM_MIRROR) & 0x1) /* modem running, too? */ |
502 | // return -EBUSY; |
503 | atiixp_update(chip, CMD, |
504 | ATI_REG_CMD_POWERDOWN | ATI_REG_CMD_AC_RESET, |
505 | ATI_REG_CMD_POWERDOWN); |
506 | return 0; |
507 | } |
508 | |
509 | /* |
510 | * auto-detection of codecs |
511 | * |
512 | * the IXP chip can generate interrupts for the non-existing codecs. |
513 | * NEW_FRAME interrupt is used to make sure that the interrupt is generated |
514 | * even if all three codecs are connected. |
515 | */ |
516 | |
517 | #define ALL_CODEC_NOT_READY \ |
518 | (ATI_REG_ISR_CODEC0_NOT_READY |\ |
519 | ATI_REG_ISR_CODEC1_NOT_READY |\ |
520 | ATI_REG_ISR_CODEC2_NOT_READY) |
521 | #define CODEC_CHECK_BITS (ALL_CODEC_NOT_READY|ATI_REG_ISR_NEW_FRAME) |
522 | |
523 | static int snd_atiixp_codec_detect(struct atiixp_modem *chip) |
524 | { |
525 | int timeout; |
526 | |
527 | chip->codec_not_ready_bits = 0; |
528 | atiixp_write(chip, IER, CODEC_CHECK_BITS); |
529 | /* wait for the interrupts */ |
530 | timeout = 50; |
531 | while (timeout-- > 0) { |
532 | msleep(msecs: 1); |
533 | if (chip->codec_not_ready_bits) |
534 | break; |
535 | } |
536 | atiixp_write(chip, IER, 0); /* disable irqs */ |
537 | |
538 | if ((chip->codec_not_ready_bits & ALL_CODEC_NOT_READY) == ALL_CODEC_NOT_READY) { |
539 | dev_err(chip->card->dev, "no codec detected!\n" ); |
540 | return -ENXIO; |
541 | } |
542 | return 0; |
543 | } |
544 | |
545 | |
546 | /* |
547 | * enable DMA and irqs |
548 | */ |
549 | static int snd_atiixp_chip_start(struct atiixp_modem *chip) |
550 | { |
551 | unsigned int reg; |
552 | |
553 | /* set up spdif, enable burst mode */ |
554 | reg = atiixp_read(chip, CMD); |
555 | reg |= ATI_REG_CMD_BURST_EN; |
556 | if(!(reg & ATI_REG_CMD_MODEM_PRESENT)) |
557 | reg |= ATI_REG_CMD_MODEM_PRESENT; |
558 | atiixp_write(chip, CMD, reg); |
559 | |
560 | /* clear all interrupt source */ |
561 | atiixp_write(chip, ISR, 0xffffffff); |
562 | /* enable irqs */ |
563 | atiixp_write(chip, IER, |
564 | ATI_REG_IER_MODEM_STATUS_EN | |
565 | ATI_REG_IER_MODEM_IN_XRUN_EN | |
566 | ATI_REG_IER_MODEM_OUT1_XRUN_EN); |
567 | return 0; |
568 | } |
569 | |
570 | |
571 | /* |
572 | * disable DMA and IRQs |
573 | */ |
574 | static int snd_atiixp_chip_stop(struct atiixp_modem *chip) |
575 | { |
576 | /* clear interrupt source */ |
577 | atiixp_write(chip, ISR, atiixp_read(chip, ISR)); |
578 | /* disable irqs */ |
579 | atiixp_write(chip, IER, 0); |
580 | return 0; |
581 | } |
582 | |
583 | |
584 | /* |
585 | * PCM section |
586 | */ |
587 | |
588 | /* |
589 | * pointer callback simplly reads XXX_DMA_DT_CUR register as the current |
590 | * position. when SG-buffer is implemented, the offset must be calculated |
591 | * correctly... |
592 | */ |
593 | static snd_pcm_uframes_t snd_atiixp_pcm_pointer(struct snd_pcm_substream *substream) |
594 | { |
595 | struct atiixp_modem *chip = snd_pcm_substream_chip(substream); |
596 | struct snd_pcm_runtime *runtime = substream->runtime; |
597 | struct atiixp_dma *dma = runtime->private_data; |
598 | unsigned int curptr; |
599 | int timeout = 1000; |
600 | |
601 | while (timeout--) { |
602 | curptr = readl(addr: chip->remap_addr + dma->ops->dt_cur); |
603 | if (curptr < dma->buf_addr) |
604 | continue; |
605 | curptr -= dma->buf_addr; |
606 | if (curptr >= dma->buf_bytes) |
607 | continue; |
608 | return bytes_to_frames(runtime, size: curptr); |
609 | } |
610 | dev_dbg(chip->card->dev, "invalid DMA pointer read 0x%x (buf=%x)\n" , |
611 | readl(chip->remap_addr + dma->ops->dt_cur), dma->buf_addr); |
612 | return 0; |
613 | } |
614 | |
615 | /* |
616 | * XRUN detected, and stop the PCM substream |
617 | */ |
618 | static void snd_atiixp_xrun_dma(struct atiixp_modem *chip, |
619 | struct atiixp_dma *dma) |
620 | { |
621 | if (! dma->substream || ! dma->running) |
622 | return; |
623 | dev_dbg(chip->card->dev, "XRUN detected (DMA %d)\n" , dma->ops->type); |
624 | snd_pcm_stop_xrun(substream: dma->substream); |
625 | } |
626 | |
627 | /* |
628 | * the period ack. update the substream. |
629 | */ |
630 | static void snd_atiixp_update_dma(struct atiixp_modem *chip, |
631 | struct atiixp_dma *dma) |
632 | { |
633 | if (! dma->substream || ! dma->running) |
634 | return; |
635 | snd_pcm_period_elapsed(substream: dma->substream); |
636 | } |
637 | |
638 | /* set BUS_BUSY interrupt bit if any DMA is running */ |
639 | /* call with spinlock held */ |
640 | static void snd_atiixp_check_bus_busy(struct atiixp_modem *chip) |
641 | { |
642 | unsigned int bus_busy; |
643 | if (atiixp_read(chip, CMD) & (ATI_REG_CMD_MODEM_SEND1_EN | |
644 | ATI_REG_CMD_MODEM_RECEIVE_EN)) |
645 | bus_busy = ATI_REG_IER_MODEM_SET_BUS_BUSY; |
646 | else |
647 | bus_busy = 0; |
648 | atiixp_update(chip, IER, ATI_REG_IER_MODEM_SET_BUS_BUSY, bus_busy); |
649 | } |
650 | |
651 | /* common trigger callback |
652 | * calling the lowlevel callbacks in it |
653 | */ |
654 | static int snd_atiixp_pcm_trigger(struct snd_pcm_substream *substream, int cmd) |
655 | { |
656 | struct atiixp_modem *chip = snd_pcm_substream_chip(substream); |
657 | struct atiixp_dma *dma = substream->runtime->private_data; |
658 | int err = 0; |
659 | |
660 | if (snd_BUG_ON(!dma->ops->enable_transfer || |
661 | !dma->ops->flush_dma)) |
662 | return -EINVAL; |
663 | |
664 | spin_lock(lock: &chip->reg_lock); |
665 | switch(cmd) { |
666 | case SNDRV_PCM_TRIGGER_START: |
667 | dma->ops->enable_transfer(chip, 1); |
668 | dma->running = 1; |
669 | break; |
670 | case SNDRV_PCM_TRIGGER_STOP: |
671 | dma->ops->enable_transfer(chip, 0); |
672 | dma->running = 0; |
673 | break; |
674 | default: |
675 | err = -EINVAL; |
676 | break; |
677 | } |
678 | if (! err) { |
679 | snd_atiixp_check_bus_busy(chip); |
680 | if (cmd == SNDRV_PCM_TRIGGER_STOP) { |
681 | dma->ops->flush_dma(chip); |
682 | snd_atiixp_check_bus_busy(chip); |
683 | } |
684 | } |
685 | spin_unlock(lock: &chip->reg_lock); |
686 | return err; |
687 | } |
688 | |
689 | |
690 | /* |
691 | * lowlevel callbacks for each DMA type |
692 | * |
693 | * every callback is supposed to be called in chip->reg_lock spinlock |
694 | */ |
695 | |
696 | /* flush FIFO of analog OUT DMA */ |
697 | static void atiixp_out_flush_dma(struct atiixp_modem *chip) |
698 | { |
699 | atiixp_write(chip, MODEM_FIFO_FLUSH, ATI_REG_MODEM_FIFO_OUT1_FLUSH); |
700 | } |
701 | |
702 | /* enable/disable analog OUT DMA */ |
703 | static void atiixp_out_enable_dma(struct atiixp_modem *chip, int on) |
704 | { |
705 | unsigned int data; |
706 | data = atiixp_read(chip, CMD); |
707 | if (on) { |
708 | if (data & ATI_REG_CMD_MODEM_OUT_DMA1_EN) |
709 | return; |
710 | atiixp_out_flush_dma(chip); |
711 | data |= ATI_REG_CMD_MODEM_OUT_DMA1_EN; |
712 | } else |
713 | data &= ~ATI_REG_CMD_MODEM_OUT_DMA1_EN; |
714 | atiixp_write(chip, CMD, data); |
715 | } |
716 | |
717 | /* start/stop transfer over OUT DMA */ |
718 | static void atiixp_out_enable_transfer(struct atiixp_modem *chip, int on) |
719 | { |
720 | atiixp_update(chip, CMD, ATI_REG_CMD_MODEM_SEND1_EN, |
721 | on ? ATI_REG_CMD_MODEM_SEND1_EN : 0); |
722 | } |
723 | |
724 | /* enable/disable analog IN DMA */ |
725 | static void atiixp_in_enable_dma(struct atiixp_modem *chip, int on) |
726 | { |
727 | atiixp_update(chip, CMD, ATI_REG_CMD_MODEM_IN_DMA_EN, |
728 | on ? ATI_REG_CMD_MODEM_IN_DMA_EN : 0); |
729 | } |
730 | |
731 | /* start/stop analog IN DMA */ |
732 | static void atiixp_in_enable_transfer(struct atiixp_modem *chip, int on) |
733 | { |
734 | if (on) { |
735 | unsigned int data = atiixp_read(chip, CMD); |
736 | if (! (data & ATI_REG_CMD_MODEM_RECEIVE_EN)) { |
737 | data |= ATI_REG_CMD_MODEM_RECEIVE_EN; |
738 | atiixp_write(chip, CMD, data); |
739 | } |
740 | } else |
741 | atiixp_update(chip, CMD, ATI_REG_CMD_MODEM_RECEIVE_EN, 0); |
742 | } |
743 | |
744 | /* flush FIFO of analog IN DMA */ |
745 | static void atiixp_in_flush_dma(struct atiixp_modem *chip) |
746 | { |
747 | atiixp_write(chip, MODEM_FIFO_FLUSH, ATI_REG_MODEM_FIFO_IN_FLUSH); |
748 | } |
749 | |
750 | /* set up slots and formats for analog OUT */ |
751 | static int snd_atiixp_playback_prepare(struct snd_pcm_substream *substream) |
752 | { |
753 | struct atiixp_modem *chip = snd_pcm_substream_chip(substream); |
754 | unsigned int data; |
755 | |
756 | spin_lock_irq(lock: &chip->reg_lock); |
757 | /* set output threshold */ |
758 | data = atiixp_read(chip, MODEM_OUT_FIFO); |
759 | data &= ~ATI_REG_MODEM_OUT1_DMA_THRESHOLD_MASK; |
760 | data |= 0x04 << ATI_REG_MODEM_OUT1_DMA_THRESHOLD_SHIFT; |
761 | atiixp_write(chip, MODEM_OUT_FIFO, data); |
762 | spin_unlock_irq(lock: &chip->reg_lock); |
763 | return 0; |
764 | } |
765 | |
766 | /* set up slots and formats for analog IN */ |
767 | static int snd_atiixp_capture_prepare(struct snd_pcm_substream *substream) |
768 | { |
769 | return 0; |
770 | } |
771 | |
772 | /* |
773 | * hw_params - allocate the buffer and set up buffer descriptors |
774 | */ |
775 | static int snd_atiixp_pcm_hw_params(struct snd_pcm_substream *substream, |
776 | struct snd_pcm_hw_params *hw_params) |
777 | { |
778 | struct atiixp_modem *chip = snd_pcm_substream_chip(substream); |
779 | struct atiixp_dma *dma = substream->runtime->private_data; |
780 | int err; |
781 | int i; |
782 | |
783 | dma->buf_addr = substream->runtime->dma_addr; |
784 | dma->buf_bytes = params_buffer_bytes(p: hw_params); |
785 | |
786 | err = atiixp_build_dma_packets(chip, dma, substream, |
787 | periods: params_periods(p: hw_params), |
788 | period_bytes: params_period_bytes(p: hw_params)); |
789 | if (err < 0) |
790 | return err; |
791 | |
792 | /* set up modem rate */ |
793 | for (i = 0; i < NUM_ATI_CODECS; i++) { |
794 | if (! chip->ac97[i]) |
795 | continue; |
796 | snd_ac97_write(ac97: chip->ac97[i], AC97_LINE1_RATE, value: params_rate(p: hw_params)); |
797 | snd_ac97_write(ac97: chip->ac97[i], AC97_LINE1_LEVEL, value: 0); |
798 | } |
799 | |
800 | return err; |
801 | } |
802 | |
803 | static int snd_atiixp_pcm_hw_free(struct snd_pcm_substream *substream) |
804 | { |
805 | struct atiixp_modem *chip = snd_pcm_substream_chip(substream); |
806 | struct atiixp_dma *dma = substream->runtime->private_data; |
807 | |
808 | atiixp_clear_dma_packets(chip, dma, substream); |
809 | return 0; |
810 | } |
811 | |
812 | |
813 | /* |
814 | * pcm hardware definition, identical for all DMA types |
815 | */ |
816 | static const struct snd_pcm_hardware snd_atiixp_pcm_hw = |
817 | { |
818 | .info = (SNDRV_PCM_INFO_MMAP | SNDRV_PCM_INFO_INTERLEAVED | |
819 | SNDRV_PCM_INFO_BLOCK_TRANSFER | |
820 | SNDRV_PCM_INFO_MMAP_VALID), |
821 | .formats = SNDRV_PCM_FMTBIT_S16_LE, |
822 | .rates = (SNDRV_PCM_RATE_8000 | |
823 | SNDRV_PCM_RATE_16000 | |
824 | SNDRV_PCM_RATE_KNOT), |
825 | .rate_min = 8000, |
826 | .rate_max = 16000, |
827 | .channels_min = 2, |
828 | .channels_max = 2, |
829 | .buffer_bytes_max = 256 * 1024, |
830 | .period_bytes_min = 32, |
831 | .period_bytes_max = 128 * 1024, |
832 | .periods_min = 2, |
833 | .periods_max = ATI_MAX_DESCRIPTORS, |
834 | }; |
835 | |
836 | static int snd_atiixp_pcm_open(struct snd_pcm_substream *substream, |
837 | struct atiixp_dma *dma, int pcm_type) |
838 | { |
839 | struct atiixp_modem *chip = snd_pcm_substream_chip(substream); |
840 | struct snd_pcm_runtime *runtime = substream->runtime; |
841 | int err; |
842 | static const unsigned int rates[] = { 8000, 9600, 12000, 16000 }; |
843 | static const struct snd_pcm_hw_constraint_list hw_constraints_rates = { |
844 | .count = ARRAY_SIZE(rates), |
845 | .list = rates, |
846 | .mask = 0, |
847 | }; |
848 | |
849 | if (snd_BUG_ON(!dma->ops || !dma->ops->enable_dma)) |
850 | return -EINVAL; |
851 | |
852 | if (dma->opened) |
853 | return -EBUSY; |
854 | dma->substream = substream; |
855 | runtime->hw = snd_atiixp_pcm_hw; |
856 | dma->ac97_pcm_type = pcm_type; |
857 | err = snd_pcm_hw_constraint_list(runtime, cond: 0, SNDRV_PCM_HW_PARAM_RATE, |
858 | l: &hw_constraints_rates); |
859 | if (err < 0) |
860 | return err; |
861 | err = snd_pcm_hw_constraint_integer(runtime, SNDRV_PCM_HW_PARAM_PERIODS); |
862 | if (err < 0) |
863 | return err; |
864 | runtime->private_data = dma; |
865 | |
866 | /* enable DMA bits */ |
867 | spin_lock_irq(lock: &chip->reg_lock); |
868 | dma->ops->enable_dma(chip, 1); |
869 | spin_unlock_irq(lock: &chip->reg_lock); |
870 | dma->opened = 1; |
871 | |
872 | return 0; |
873 | } |
874 | |
875 | static int snd_atiixp_pcm_close(struct snd_pcm_substream *substream, |
876 | struct atiixp_dma *dma) |
877 | { |
878 | struct atiixp_modem *chip = snd_pcm_substream_chip(substream); |
879 | /* disable DMA bits */ |
880 | if (snd_BUG_ON(!dma->ops || !dma->ops->enable_dma)) |
881 | return -EINVAL; |
882 | spin_lock_irq(lock: &chip->reg_lock); |
883 | dma->ops->enable_dma(chip, 0); |
884 | spin_unlock_irq(lock: &chip->reg_lock); |
885 | dma->substream = NULL; |
886 | dma->opened = 0; |
887 | return 0; |
888 | } |
889 | |
890 | /* |
891 | */ |
892 | static int snd_atiixp_playback_open(struct snd_pcm_substream *substream) |
893 | { |
894 | struct atiixp_modem *chip = snd_pcm_substream_chip(substream); |
895 | int err; |
896 | |
897 | mutex_lock(&chip->open_mutex); |
898 | err = snd_atiixp_pcm_open(substream, dma: &chip->dmas[ATI_DMA_PLAYBACK], pcm_type: 0); |
899 | mutex_unlock(lock: &chip->open_mutex); |
900 | if (err < 0) |
901 | return err; |
902 | return 0; |
903 | } |
904 | |
905 | static int snd_atiixp_playback_close(struct snd_pcm_substream *substream) |
906 | { |
907 | struct atiixp_modem *chip = snd_pcm_substream_chip(substream); |
908 | int err; |
909 | mutex_lock(&chip->open_mutex); |
910 | err = snd_atiixp_pcm_close(substream, dma: &chip->dmas[ATI_DMA_PLAYBACK]); |
911 | mutex_unlock(lock: &chip->open_mutex); |
912 | return err; |
913 | } |
914 | |
915 | static int snd_atiixp_capture_open(struct snd_pcm_substream *substream) |
916 | { |
917 | struct atiixp_modem *chip = snd_pcm_substream_chip(substream); |
918 | return snd_atiixp_pcm_open(substream, dma: &chip->dmas[ATI_DMA_CAPTURE], pcm_type: 1); |
919 | } |
920 | |
921 | static int snd_atiixp_capture_close(struct snd_pcm_substream *substream) |
922 | { |
923 | struct atiixp_modem *chip = snd_pcm_substream_chip(substream); |
924 | return snd_atiixp_pcm_close(substream, dma: &chip->dmas[ATI_DMA_CAPTURE]); |
925 | } |
926 | |
927 | |
928 | /* AC97 playback */ |
929 | static const struct snd_pcm_ops snd_atiixp_playback_ops = { |
930 | .open = snd_atiixp_playback_open, |
931 | .close = snd_atiixp_playback_close, |
932 | .hw_params = snd_atiixp_pcm_hw_params, |
933 | .hw_free = snd_atiixp_pcm_hw_free, |
934 | .prepare = snd_atiixp_playback_prepare, |
935 | .trigger = snd_atiixp_pcm_trigger, |
936 | .pointer = snd_atiixp_pcm_pointer, |
937 | }; |
938 | |
939 | /* AC97 capture */ |
940 | static const struct snd_pcm_ops snd_atiixp_capture_ops = { |
941 | .open = snd_atiixp_capture_open, |
942 | .close = snd_atiixp_capture_close, |
943 | .hw_params = snd_atiixp_pcm_hw_params, |
944 | .hw_free = snd_atiixp_pcm_hw_free, |
945 | .prepare = snd_atiixp_capture_prepare, |
946 | .trigger = snd_atiixp_pcm_trigger, |
947 | .pointer = snd_atiixp_pcm_pointer, |
948 | }; |
949 | |
950 | static const struct atiixp_dma_ops snd_atiixp_playback_dma_ops = { |
951 | .type = ATI_DMA_PLAYBACK, |
952 | .llp_offset = ATI_REG_MODEM_OUT_DMA1_LINKPTR, |
953 | .dt_cur = ATI_REG_MODEM_OUT_DMA1_DT_CUR, |
954 | .enable_dma = atiixp_out_enable_dma, |
955 | .enable_transfer = atiixp_out_enable_transfer, |
956 | .flush_dma = atiixp_out_flush_dma, |
957 | }; |
958 | |
959 | static const struct atiixp_dma_ops snd_atiixp_capture_dma_ops = { |
960 | .type = ATI_DMA_CAPTURE, |
961 | .llp_offset = ATI_REG_MODEM_IN_DMA_LINKPTR, |
962 | .dt_cur = ATI_REG_MODEM_IN_DMA_DT_CUR, |
963 | .enable_dma = atiixp_in_enable_dma, |
964 | .enable_transfer = atiixp_in_enable_transfer, |
965 | .flush_dma = atiixp_in_flush_dma, |
966 | }; |
967 | |
968 | static int snd_atiixp_pcm_new(struct atiixp_modem *chip) |
969 | { |
970 | struct snd_pcm *pcm; |
971 | int err; |
972 | |
973 | /* initialize constants */ |
974 | chip->dmas[ATI_DMA_PLAYBACK].ops = &snd_atiixp_playback_dma_ops; |
975 | chip->dmas[ATI_DMA_CAPTURE].ops = &snd_atiixp_capture_dma_ops; |
976 | |
977 | /* PCM #0: analog I/O */ |
978 | err = snd_pcm_new(card: chip->card, id: "ATI IXP MC97" , device: ATI_PCMDEV_ANALOG, playback_count: 1, capture_count: 1, rpcm: &pcm); |
979 | if (err < 0) |
980 | return err; |
981 | snd_pcm_set_ops(pcm, direction: SNDRV_PCM_STREAM_PLAYBACK, ops: &snd_atiixp_playback_ops); |
982 | snd_pcm_set_ops(pcm, direction: SNDRV_PCM_STREAM_CAPTURE, ops: &snd_atiixp_capture_ops); |
983 | pcm->dev_class = SNDRV_PCM_CLASS_MODEM; |
984 | pcm->private_data = chip; |
985 | strcpy(p: pcm->name, q: "ATI IXP MC97" ); |
986 | chip->pcmdevs[ATI_PCMDEV_ANALOG] = pcm; |
987 | |
988 | snd_pcm_set_managed_buffer_all(pcm, SNDRV_DMA_TYPE_DEV, |
989 | data: &chip->pci->dev, size: 64*1024, max: 128*1024); |
990 | |
991 | return 0; |
992 | } |
993 | |
994 | |
995 | |
996 | /* |
997 | * interrupt handler |
998 | */ |
999 | static irqreturn_t snd_atiixp_interrupt(int irq, void *dev_id) |
1000 | { |
1001 | struct atiixp_modem *chip = dev_id; |
1002 | unsigned int status; |
1003 | |
1004 | status = atiixp_read(chip, ISR); |
1005 | |
1006 | if (! status) |
1007 | return IRQ_NONE; |
1008 | |
1009 | /* process audio DMA */ |
1010 | if (status & ATI_REG_ISR_MODEM_OUT1_XRUN) |
1011 | snd_atiixp_xrun_dma(chip, dma: &chip->dmas[ATI_DMA_PLAYBACK]); |
1012 | else if (status & ATI_REG_ISR_MODEM_OUT1_STATUS) |
1013 | snd_atiixp_update_dma(chip, dma: &chip->dmas[ATI_DMA_PLAYBACK]); |
1014 | if (status & ATI_REG_ISR_MODEM_IN_XRUN) |
1015 | snd_atiixp_xrun_dma(chip, dma: &chip->dmas[ATI_DMA_CAPTURE]); |
1016 | else if (status & ATI_REG_ISR_MODEM_IN_STATUS) |
1017 | snd_atiixp_update_dma(chip, dma: &chip->dmas[ATI_DMA_CAPTURE]); |
1018 | |
1019 | /* for codec detection */ |
1020 | if (status & CODEC_CHECK_BITS) { |
1021 | unsigned int detected; |
1022 | detected = status & CODEC_CHECK_BITS; |
1023 | spin_lock(lock: &chip->reg_lock); |
1024 | chip->codec_not_ready_bits |= detected; |
1025 | atiixp_update(chip, IER, detected, 0); /* disable the detected irqs */ |
1026 | spin_unlock(lock: &chip->reg_lock); |
1027 | } |
1028 | |
1029 | /* ack */ |
1030 | atiixp_write(chip, ISR, status); |
1031 | |
1032 | return IRQ_HANDLED; |
1033 | } |
1034 | |
1035 | |
1036 | /* |
1037 | * ac97 mixer section |
1038 | */ |
1039 | |
1040 | static int snd_atiixp_mixer_new(struct atiixp_modem *chip, int clock) |
1041 | { |
1042 | struct snd_ac97_bus *pbus; |
1043 | struct snd_ac97_template ac97; |
1044 | int i, err; |
1045 | int codec_count; |
1046 | static const struct snd_ac97_bus_ops ops = { |
1047 | .write = snd_atiixp_ac97_write, |
1048 | .read = snd_atiixp_ac97_read, |
1049 | }; |
1050 | static const unsigned int codec_skip[NUM_ATI_CODECS] = { |
1051 | ATI_REG_ISR_CODEC0_NOT_READY, |
1052 | ATI_REG_ISR_CODEC1_NOT_READY, |
1053 | ATI_REG_ISR_CODEC2_NOT_READY, |
1054 | }; |
1055 | |
1056 | if (snd_atiixp_codec_detect(chip) < 0) |
1057 | return -ENXIO; |
1058 | |
1059 | err = snd_ac97_bus(card: chip->card, num: 0, ops: &ops, private_data: chip, rbus: &pbus); |
1060 | if (err < 0) |
1061 | return err; |
1062 | pbus->clock = clock; |
1063 | chip->ac97_bus = pbus; |
1064 | |
1065 | codec_count = 0; |
1066 | for (i = 0; i < NUM_ATI_CODECS; i++) { |
1067 | if (chip->codec_not_ready_bits & codec_skip[i]) |
1068 | continue; |
1069 | memset(&ac97, 0, sizeof(ac97)); |
1070 | ac97.private_data = chip; |
1071 | ac97.pci = chip->pci; |
1072 | ac97.num = i; |
1073 | ac97.scaps = AC97_SCAP_SKIP_AUDIO | AC97_SCAP_POWER_SAVE; |
1074 | err = snd_ac97_mixer(bus: pbus, template: &ac97, rac97: &chip->ac97[i]); |
1075 | if (err < 0) { |
1076 | chip->ac97[i] = NULL; /* to be sure */ |
1077 | dev_dbg(chip->card->dev, |
1078 | "codec %d not available for modem\n" , i); |
1079 | continue; |
1080 | } |
1081 | codec_count++; |
1082 | } |
1083 | |
1084 | if (! codec_count) { |
1085 | dev_err(chip->card->dev, "no codec available\n" ); |
1086 | return -ENODEV; |
1087 | } |
1088 | |
1089 | /* snd_ac97_tune_hardware(chip->ac97, ac97_quirks); */ |
1090 | |
1091 | return 0; |
1092 | } |
1093 | |
1094 | |
1095 | /* |
1096 | * power management |
1097 | */ |
1098 | static int snd_atiixp_suspend(struct device *dev) |
1099 | { |
1100 | struct snd_card *card = dev_get_drvdata(dev); |
1101 | struct atiixp_modem *chip = card->private_data; |
1102 | int i; |
1103 | |
1104 | snd_power_change_state(card, SNDRV_CTL_POWER_D3hot); |
1105 | for (i = 0; i < NUM_ATI_CODECS; i++) |
1106 | snd_ac97_suspend(ac97: chip->ac97[i]); |
1107 | snd_atiixp_aclink_down(chip); |
1108 | snd_atiixp_chip_stop(chip); |
1109 | return 0; |
1110 | } |
1111 | |
1112 | static int snd_atiixp_resume(struct device *dev) |
1113 | { |
1114 | struct snd_card *card = dev_get_drvdata(dev); |
1115 | struct atiixp_modem *chip = card->private_data; |
1116 | int i; |
1117 | |
1118 | snd_atiixp_aclink_reset(chip); |
1119 | snd_atiixp_chip_start(chip); |
1120 | |
1121 | for (i = 0; i < NUM_ATI_CODECS; i++) |
1122 | snd_ac97_resume(ac97: chip->ac97[i]); |
1123 | |
1124 | snd_power_change_state(card, SNDRV_CTL_POWER_D0); |
1125 | return 0; |
1126 | } |
1127 | |
1128 | static DEFINE_SIMPLE_DEV_PM_OPS(snd_atiixp_pm, snd_atiixp_suspend, snd_atiixp_resume); |
1129 | |
1130 | /* |
1131 | * proc interface for register dump |
1132 | */ |
1133 | |
1134 | static void snd_atiixp_proc_read(struct snd_info_entry *entry, |
1135 | struct snd_info_buffer *buffer) |
1136 | { |
1137 | struct atiixp_modem *chip = entry->private_data; |
1138 | int i; |
1139 | |
1140 | for (i = 0; i < 256; i += 4) |
1141 | snd_iprintf(buffer, "%02x: %08x\n" , i, readl(chip->remap_addr + i)); |
1142 | } |
1143 | |
1144 | static void snd_atiixp_proc_init(struct atiixp_modem *chip) |
1145 | { |
1146 | snd_card_ro_proc_new(card: chip->card, name: "atiixp-modem" , private_data: chip, |
1147 | read: snd_atiixp_proc_read); |
1148 | } |
1149 | |
1150 | |
1151 | /* |
1152 | * destructor |
1153 | */ |
1154 | |
1155 | static void snd_atiixp_free(struct snd_card *card) |
1156 | { |
1157 | snd_atiixp_chip_stop(chip: card->private_data); |
1158 | } |
1159 | |
1160 | /* |
1161 | * constructor for chip instance |
1162 | */ |
1163 | static int snd_atiixp_init(struct snd_card *card, struct pci_dev *pci) |
1164 | { |
1165 | struct atiixp_modem *chip = card->private_data; |
1166 | int err; |
1167 | |
1168 | err = pcim_enable_device(pdev: pci); |
1169 | if (err < 0) |
1170 | return err; |
1171 | |
1172 | spin_lock_init(&chip->reg_lock); |
1173 | mutex_init(&chip->open_mutex); |
1174 | chip->card = card; |
1175 | chip->pci = pci; |
1176 | chip->irq = -1; |
1177 | err = pcim_iomap_regions(pdev: pci, mask: 1 << 0, name: "ATI IXP MC97" ); |
1178 | if (err < 0) |
1179 | return err; |
1180 | chip->addr = pci_resource_start(pci, 0); |
1181 | chip->remap_addr = pcim_iomap_table(pdev: pci)[0]; |
1182 | |
1183 | if (devm_request_irq(dev: &pci->dev, irq: pci->irq, handler: snd_atiixp_interrupt, |
1184 | IRQF_SHARED, KBUILD_MODNAME, dev_id: chip)) { |
1185 | dev_err(card->dev, "unable to grab IRQ %d\n" , pci->irq); |
1186 | return -EBUSY; |
1187 | } |
1188 | chip->irq = pci->irq; |
1189 | card->sync_irq = chip->irq; |
1190 | card->private_free = snd_atiixp_free; |
1191 | pci_set_master(dev: pci); |
1192 | |
1193 | return 0; |
1194 | } |
1195 | |
1196 | |
1197 | static int __snd_atiixp_probe(struct pci_dev *pci, |
1198 | const struct pci_device_id *pci_id) |
1199 | { |
1200 | struct snd_card *card; |
1201 | struct atiixp_modem *chip; |
1202 | int err; |
1203 | |
1204 | err = snd_devm_card_new(parent: &pci->dev, idx: index, xid: id, THIS_MODULE, |
1205 | extra_size: sizeof(*chip), card_ret: &card); |
1206 | if (err < 0) |
1207 | return err; |
1208 | chip = card->private_data; |
1209 | |
1210 | strcpy(p: card->driver, q: "ATIIXP-MODEM" ); |
1211 | strcpy(p: card->shortname, q: "ATI IXP Modem" ); |
1212 | err = snd_atiixp_init(card, pci); |
1213 | if (err < 0) |
1214 | return err; |
1215 | |
1216 | err = snd_atiixp_aclink_reset(chip); |
1217 | if (err < 0) |
1218 | return err; |
1219 | |
1220 | err = snd_atiixp_mixer_new(chip, clock: ac97_clock); |
1221 | if (err < 0) |
1222 | return err; |
1223 | |
1224 | err = snd_atiixp_pcm_new(chip); |
1225 | if (err < 0) |
1226 | return err; |
1227 | |
1228 | snd_atiixp_proc_init(chip); |
1229 | |
1230 | snd_atiixp_chip_start(chip); |
1231 | |
1232 | sprintf(buf: card->longname, fmt: "%s rev %x at 0x%lx, irq %i" , |
1233 | card->shortname, pci->revision, chip->addr, chip->irq); |
1234 | |
1235 | err = snd_card_register(card); |
1236 | if (err < 0) |
1237 | return err; |
1238 | |
1239 | pci_set_drvdata(pdev: pci, data: card); |
1240 | return 0; |
1241 | } |
1242 | |
1243 | static int snd_atiixp_probe(struct pci_dev *pci, |
1244 | const struct pci_device_id *pci_id) |
1245 | { |
1246 | return snd_card_free_on_error(dev: &pci->dev, ret: __snd_atiixp_probe(pci, pci_id)); |
1247 | } |
1248 | |
1249 | static struct pci_driver atiixp_modem_driver = { |
1250 | .name = KBUILD_MODNAME, |
1251 | .id_table = snd_atiixp_ids, |
1252 | .probe = snd_atiixp_probe, |
1253 | .driver = { |
1254 | .pm = &snd_atiixp_pm, |
1255 | }, |
1256 | }; |
1257 | |
1258 | module_pci_driver(atiixp_modem_driver); |
1259 | |