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9b4ffa48 | 1 | /* |
9ac25594 | 2 | * Driver for audio on multifunction CS5535/6 companion device |
9b4ffa48 JK |
3 | * Copyright (C) Jaya Kumar |
4 | * | |
5 | * Based on Jaroslav Kysela and Takashi Iwai's examples. | |
6 | * This work was sponsored by CIS(M) Sdn Bhd. | |
7 | * | |
8 | * This program is free software; you can redistribute it and/or modify | |
9 | * it under the terms of the GNU General Public License as published by | |
10 | * the Free Software Foundation; either version 2 of the License, or | |
11 | * (at your option) any later version. | |
12 | * | |
13 | * This program is distributed in the hope that it will be useful, | |
14 | * but WITHOUT ANY WARRANTY; without even the implied warranty of | |
15 | * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the | |
16 | * GNU General Public License for more details. | |
17 | * | |
18 | * You should have received a copy of the GNU General Public License | |
19 | * along with this program; if not, write to the Free Software | |
20 | * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA | |
21 | * | |
22 | */ | |
23 | ||
24 | #include <linux/delay.h> | |
25 | #include <linux/interrupt.h> | |
26 | #include <linux/init.h> | |
27 | #include <linux/pci.h> | |
28 | #include <linux/slab.h> | |
29 | #include <linux/moduleparam.h> | |
30 | #include <asm/io.h> | |
9b4ffa48 JK |
31 | #include <sound/core.h> |
32 | #include <sound/control.h> | |
33 | #include <sound/pcm.h> | |
34 | #include <sound/rawmidi.h> | |
35 | #include <sound/ac97_codec.h> | |
36 | #include <sound/initval.h> | |
37 | #include <sound/asoundef.h> | |
38 | #include "cs5535audio.h" | |
39 | ||
40 | #define DRIVER_NAME "cs5535audio" | |
41 | ||
9ac25594 JK |
42 | static char *ac97_quirk; |
43 | module_param(ac97_quirk, charp, 0444); | |
44 | MODULE_PARM_DESC(ac97_quirk, "AC'97 board specific workarounds."); | |
45 | ||
46 | static struct ac97_quirk ac97_quirks[] __devinitdata = { | |
47 | #if 0 /* Not yet confirmed if all 5536 boards are HP only */ | |
48 | { | |
49 | .subvendor = PCI_VENDOR_ID_AMD, | |
50 | .subdevice = PCI_DEVICE_ID_AMD_CS5536_AUDIO, | |
51 | .name = "AMD RDK", | |
52 | .type = AC97_TUNE_HP_ONLY | |
53 | }, | |
54 | #endif | |
55 | {} | |
56 | }; | |
9b4ffa48 | 57 | |
302e4c2f TI |
58 | static int index[SNDRV_CARDS] = SNDRV_DEFAULT_IDX; |
59 | static char *id[SNDRV_CARDS] = SNDRV_DEFAULT_STR; | |
60 | static int enable[SNDRV_CARDS] = SNDRV_DEFAULT_ENABLE_PNP; | |
9b4ffa48 | 61 | |
302e4c2f | 62 | module_param_array(index, int, NULL, 0444); |
1dbfd8c5 | 63 | MODULE_PARM_DESC(index, "Index value for " DRIVER_NAME); |
302e4c2f | 64 | module_param_array(id, charp, NULL, 0444); |
1dbfd8c5 | 65 | MODULE_PARM_DESC(id, "ID string for " DRIVER_NAME); |
302e4c2f TI |
66 | module_param_array(enable, bool, NULL, 0444); |
67 | MODULE_PARM_DESC(enable, "Enable " DRIVER_NAME); | |
1dbfd8c5 | 68 | |
cebe41d4 | 69 | static DEFINE_PCI_DEVICE_TABLE(snd_cs5535audio_ids) = { |
9ac25594 JK |
70 | { PCI_DEVICE(PCI_VENDOR_ID_NS, PCI_DEVICE_ID_NS_CS5535_AUDIO) }, |
71 | { PCI_DEVICE(PCI_VENDOR_ID_AMD, PCI_DEVICE_ID_AMD_CS5536_AUDIO) }, | |
9b4ffa48 JK |
72 | {} |
73 | }; | |
74 | ||
75 | MODULE_DEVICE_TABLE(pci, snd_cs5535audio_ids); | |
76 | ||
66f8df6b | 77 | static void wait_till_cmd_acked(struct cs5535audio *cs5535au, unsigned long timeout) |
9b4ffa48 | 78 | { |
3e873174 | 79 | unsigned int tmp; |
9b4ffa48 JK |
80 | do { |
81 | tmp = cs_readl(cs5535au, ACC_CODEC_CNTL); | |
82 | if (!(tmp & CMD_NEW)) | |
83 | break; | |
1037593c | 84 | udelay(1); |
9b4ffa48 JK |
85 | } while (--timeout); |
86 | if (!timeout) | |
87 | snd_printk(KERN_ERR "Failure writing to cs5535 codec\n"); | |
88 | } | |
89 | ||
66f8df6b TI |
90 | static unsigned short snd_cs5535audio_codec_read(struct cs5535audio *cs5535au, |
91 | unsigned short reg) | |
9b4ffa48 | 92 | { |
3e873174 | 93 | unsigned int regdata; |
66f8df6b | 94 | unsigned int timeout; |
3e873174 | 95 | unsigned int val; |
9b4ffa48 | 96 | |
3e873174 | 97 | regdata = ((unsigned int) reg) << 24; |
9b4ffa48 JK |
98 | regdata |= ACC_CODEC_CNTL_RD_CMD; |
99 | regdata |= CMD_NEW; | |
100 | ||
101 | cs_writel(cs5535au, ACC_CODEC_CNTL, regdata); | |
1037593c | 102 | wait_till_cmd_acked(cs5535au, 50); |
9b4ffa48 JK |
103 | |
104 | timeout = 50; | |
105 | do { | |
106 | val = cs_readl(cs5535au, ACC_CODEC_STATUS); | |
3e873174 | 107 | if ((val & STS_NEW) && reg == (val >> 24)) |
9b4ffa48 | 108 | break; |
1037593c | 109 | udelay(1); |
9b4ffa48 JK |
110 | } while (--timeout); |
111 | if (!timeout) | |
40a4f7a0 JK |
112 | snd_printk(KERN_ERR "Failure reading codec reg 0x%x," |
113 | "Last value=0x%x\n", reg, val); | |
9b4ffa48 | 114 | |
3e873174 | 115 | return (unsigned short) val; |
9b4ffa48 JK |
116 | } |
117 | ||
66f8df6b TI |
118 | static void snd_cs5535audio_codec_write(struct cs5535audio *cs5535au, |
119 | unsigned short reg, unsigned short val) | |
9b4ffa48 | 120 | { |
3e873174 | 121 | unsigned int regdata; |
9b4ffa48 | 122 | |
3e873174 TI |
123 | regdata = ((unsigned int) reg) << 24; |
124 | regdata |= val; | |
9b4ffa48 JK |
125 | regdata &= CMD_MASK; |
126 | regdata |= CMD_NEW; | |
127 | regdata &= ACC_CODEC_CNTL_WR_CMD; | |
128 | ||
129 | cs_writel(cs5535au, ACC_CODEC_CNTL, regdata); | |
130 | wait_till_cmd_acked(cs5535au, 50); | |
131 | } | |
132 | ||
66f8df6b TI |
133 | static void snd_cs5535audio_ac97_codec_write(struct snd_ac97 *ac97, |
134 | unsigned short reg, unsigned short val) | |
9b4ffa48 | 135 | { |
66f8df6b | 136 | struct cs5535audio *cs5535au = ac97->private_data; |
9b4ffa48 JK |
137 | snd_cs5535audio_codec_write(cs5535au, reg, val); |
138 | } | |
139 | ||
66f8df6b TI |
140 | static unsigned short snd_cs5535audio_ac97_codec_read(struct snd_ac97 *ac97, |
141 | unsigned short reg) | |
9b4ffa48 | 142 | { |
66f8df6b | 143 | struct cs5535audio *cs5535au = ac97->private_data; |
9b4ffa48 JK |
144 | return snd_cs5535audio_codec_read(cs5535au, reg); |
145 | } | |
146 | ||
5be55be5 | 147 | static int __devinit snd_cs5535audio_mixer(struct cs5535audio *cs5535au) |
9b4ffa48 | 148 | { |
66f8df6b TI |
149 | struct snd_card *card = cs5535au->card; |
150 | struct snd_ac97_bus *pbus; | |
151 | struct snd_ac97_template ac97; | |
9b4ffa48 | 152 | int err; |
66f8df6b | 153 | static struct snd_ac97_bus_ops ops = { |
9b4ffa48 JK |
154 | .write = snd_cs5535audio_ac97_codec_write, |
155 | .read = snd_cs5535audio_ac97_codec_read, | |
156 | }; | |
157 | ||
158 | if ((err = snd_ac97_bus(card, 0, &ops, NULL, &pbus)) < 0) | |
159 | return err; | |
160 | ||
161 | memset(&ac97, 0, sizeof(ac97)); | |
b035ce0f JK |
162 | ac97.scaps = AC97_SCAP_AUDIO | AC97_SCAP_SKIP_MODEM |
163 | | AC97_SCAP_POWER_SAVE; | |
9b4ffa48 JK |
164 | ac97.private_data = cs5535au; |
165 | ac97.pci = cs5535au->pci; | |
9b4ffa48 | 166 | |
3556d184 AS |
167 | /* set any OLPC-specific scaps */ |
168 | olpc_prequirks(card, &ac97); | |
169 | ||
9b4ffa48 | 170 | if ((err = snd_ac97_mixer(pbus, &ac97, &cs5535au->ac97)) < 0) { |
3e873174 | 171 | snd_printk(KERN_ERR "mixer failed\n"); |
9b4ffa48 JK |
172 | return err; |
173 | } | |
174 | ||
9ac25594 JK |
175 | snd_ac97_tune_hardware(cs5535au->ac97, ac97_quirks, ac97_quirk); |
176 | ||
57d4bf6d JK |
177 | err = olpc_quirks(card, cs5535au->ac97); |
178 | if (err < 0) { | |
179 | snd_printk(KERN_ERR "olpc quirks failed\n"); | |
180 | return err; | |
181 | } | |
182 | ||
9b4ffa48 JK |
183 | return 0; |
184 | } | |
185 | ||
66f8df6b | 186 | static void process_bm0_irq(struct cs5535audio *cs5535au) |
9b4ffa48 JK |
187 | { |
188 | u8 bm_stat; | |
189 | spin_lock(&cs5535au->reg_lock); | |
190 | bm_stat = cs_readb(cs5535au, ACC_BM0_STATUS); | |
191 | spin_unlock(&cs5535au->reg_lock); | |
192 | if (bm_stat & EOP) { | |
66f8df6b | 193 | struct cs5535audio_dma *dma; |
9b4ffa48 JK |
194 | dma = cs5535au->playback_substream->runtime->private_data; |
195 | snd_pcm_period_elapsed(cs5535au->playback_substream); | |
196 | } else { | |
197 | snd_printk(KERN_ERR "unexpected bm0 irq src, bm_stat=%x\n", | |
198 | bm_stat); | |
199 | } | |
200 | } | |
201 | ||
66f8df6b | 202 | static void process_bm1_irq(struct cs5535audio *cs5535au) |
9b4ffa48 JK |
203 | { |
204 | u8 bm_stat; | |
205 | spin_lock(&cs5535au->reg_lock); | |
206 | bm_stat = cs_readb(cs5535au, ACC_BM1_STATUS); | |
207 | spin_unlock(&cs5535au->reg_lock); | |
208 | if (bm_stat & EOP) { | |
66f8df6b | 209 | struct cs5535audio_dma *dma; |
9b4ffa48 JK |
210 | dma = cs5535au->capture_substream->runtime->private_data; |
211 | snd_pcm_period_elapsed(cs5535au->capture_substream); | |
212 | } | |
213 | } | |
214 | ||
7d12e780 | 215 | static irqreturn_t snd_cs5535audio_interrupt(int irq, void *dev_id) |
9b4ffa48 JK |
216 | { |
217 | u16 acc_irq_stat; | |
9b4ffa48 | 218 | unsigned char count; |
66f8df6b | 219 | struct cs5535audio *cs5535au = dev_id; |
9b4ffa48 JK |
220 | |
221 | if (cs5535au == NULL) | |
222 | return IRQ_NONE; | |
223 | ||
224 | acc_irq_stat = cs_readw(cs5535au, ACC_IRQ_STATUS); | |
225 | ||
226 | if (!acc_irq_stat) | |
227 | return IRQ_NONE; | |
4ea24163 | 228 | for (count = 0; count < 4; count++) { |
3e873174 | 229 | if (acc_irq_stat & (1 << count)) { |
9b4ffa48 JK |
230 | switch (count) { |
231 | case IRQ_STS: | |
232 | cs_readl(cs5535au, ACC_GPIO_STATUS); | |
233 | break; | |
234 | case WU_IRQ_STS: | |
235 | cs_readl(cs5535au, ACC_GPIO_STATUS); | |
236 | break; | |
237 | case BM0_IRQ_STS: | |
238 | process_bm0_irq(cs5535au); | |
239 | break; | |
240 | case BM1_IRQ_STS: | |
241 | process_bm1_irq(cs5535au); | |
242 | break; | |
9b4ffa48 | 243 | default: |
4ea24163 AS |
244 | snd_printk(KERN_ERR "Unexpected irq src: " |
245 | "0x%x\n", acc_irq_stat); | |
9b4ffa48 JK |
246 | break; |
247 | } | |
248 | } | |
249 | } | |
250 | return IRQ_HANDLED; | |
251 | } | |
252 | ||
66f8df6b | 253 | static int snd_cs5535audio_free(struct cs5535audio *cs5535au) |
9b4ffa48 JK |
254 | { |
255 | synchronize_irq(cs5535au->irq); | |
256 | pci_set_power_state(cs5535au->pci, 3); | |
257 | ||
258 | if (cs5535au->irq >= 0) | |
259 | free_irq(cs5535au->irq, cs5535au); | |
260 | ||
261 | pci_release_regions(cs5535au->pci); | |
262 | pci_disable_device(cs5535au->pci); | |
263 | kfree(cs5535au); | |
264 | return 0; | |
265 | } | |
266 | ||
66f8df6b | 267 | static int snd_cs5535audio_dev_free(struct snd_device *device) |
9b4ffa48 | 268 | { |
66f8df6b | 269 | struct cs5535audio *cs5535au = device->device_data; |
9b4ffa48 JK |
270 | return snd_cs5535audio_free(cs5535au); |
271 | } | |
272 | ||
66f8df6b TI |
273 | static int __devinit snd_cs5535audio_create(struct snd_card *card, |
274 | struct pci_dev *pci, | |
275 | struct cs5535audio **rcs5535au) | |
9b4ffa48 | 276 | { |
66f8df6b | 277 | struct cs5535audio *cs5535au; |
9b4ffa48 JK |
278 | |
279 | int err; | |
66f8df6b | 280 | static struct snd_device_ops ops = { |
9b4ffa48 JK |
281 | .dev_free = snd_cs5535audio_dev_free, |
282 | }; | |
283 | ||
284 | *rcs5535au = NULL; | |
285 | if ((err = pci_enable_device(pci)) < 0) | |
286 | return err; | |
287 | ||
284901a9 YH |
288 | if (pci_set_dma_mask(pci, DMA_BIT_MASK(32)) < 0 || |
289 | pci_set_consistent_dma_mask(pci, DMA_BIT_MASK(32)) < 0) { | |
9b4ffa48 JK |
290 | printk(KERN_WARNING "unable to get 32bit dma\n"); |
291 | err = -ENXIO; | |
292 | goto pcifail; | |
293 | } | |
294 | ||
295 | cs5535au = kzalloc(sizeof(*cs5535au), GFP_KERNEL); | |
296 | if (cs5535au == NULL) { | |
297 | err = -ENOMEM; | |
298 | goto pcifail; | |
299 | } | |
300 | ||
301 | spin_lock_init(&cs5535au->reg_lock); | |
302 | cs5535au->card = card; | |
303 | cs5535au->pci = pci; | |
304 | cs5535au->irq = -1; | |
305 | ||
306 | if ((err = pci_request_regions(pci, "CS5535 Audio")) < 0) { | |
307 | kfree(cs5535au); | |
308 | goto pcifail; | |
309 | } | |
310 | ||
311 | cs5535au->port = pci_resource_start(pci, 0); | |
312 | ||
313 | if (request_irq(pci->irq, snd_cs5535audio_interrupt, | |
934c2b6d | 314 | IRQF_SHARED, KBUILD_MODNAME, cs5535au)) { |
ee419653 | 315 | snd_printk(KERN_ERR "unable to grab IRQ %d\n", pci->irq); |
9b4ffa48 JK |
316 | err = -EBUSY; |
317 | goto sndfail; | |
318 | } | |
319 | ||
320 | cs5535au->irq = pci->irq; | |
321 | pci_set_master(pci); | |
322 | ||
323 | if ((err = snd_device_new(card, SNDRV_DEV_LOWLEVEL, | |
66f8df6b | 324 | cs5535au, &ops)) < 0) |
9b4ffa48 JK |
325 | goto sndfail; |
326 | ||
327 | snd_card_set_dev(card, &pci->dev); | |
328 | ||
329 | *rcs5535au = cs5535au; | |
330 | return 0; | |
331 | ||
332 | sndfail: /* leave the device alive, just kill the snd */ | |
333 | snd_cs5535audio_free(cs5535au); | |
334 | return err; | |
335 | ||
336 | pcifail: | |
337 | pci_disable_device(pci); | |
338 | return err; | |
339 | } | |
340 | ||
341 | static int __devinit snd_cs5535audio_probe(struct pci_dev *pci, | |
66f8df6b | 342 | const struct pci_device_id *pci_id) |
9b4ffa48 JK |
343 | { |
344 | static int dev; | |
66f8df6b TI |
345 | struct snd_card *card; |
346 | struct cs5535audio *cs5535au; | |
9b4ffa48 JK |
347 | int err; |
348 | ||
349 | if (dev >= SNDRV_CARDS) | |
350 | return -ENODEV; | |
302e4c2f TI |
351 | if (!enable[dev]) { |
352 | dev++; | |
353 | return -ENOENT; | |
354 | } | |
9b4ffa48 | 355 | |
e58de7ba TI |
356 | err = snd_card_create(index[dev], id[dev], THIS_MODULE, 0, &card); |
357 | if (err < 0) | |
358 | return err; | |
9b4ffa48 JK |
359 | |
360 | if ((err = snd_cs5535audio_create(card, pci, &cs5535au)) < 0) | |
361 | goto probefail_out; | |
362 | ||
9ac25594 JK |
363 | card->private_data = cs5535au; |
364 | ||
9b4ffa48 JK |
365 | if ((err = snd_cs5535audio_mixer(cs5535au)) < 0) |
366 | goto probefail_out; | |
367 | ||
368 | if ((err = snd_cs5535audio_pcm(cs5535au)) < 0) | |
369 | goto probefail_out; | |
370 | ||
371 | strcpy(card->driver, DRIVER_NAME); | |
372 | ||
373 | strcpy(card->shortname, "CS5535 Audio"); | |
374 | sprintf(card->longname, "%s %s at 0x%lx, irq %i", | |
375 | card->shortname, card->driver, | |
376 | cs5535au->port, cs5535au->irq); | |
377 | ||
378 | if ((err = snd_card_register(card)) < 0) | |
379 | goto probefail_out; | |
380 | ||
381 | pci_set_drvdata(pci, card); | |
382 | dev++; | |
383 | return 0; | |
384 | ||
385 | probefail_out: | |
386 | snd_card_free(card); | |
387 | return err; | |
388 | } | |
389 | ||
390 | static void __devexit snd_cs5535audio_remove(struct pci_dev *pci) | |
391 | { | |
3c554946 | 392 | olpc_quirks_cleanup(); |
9b4ffa48 JK |
393 | snd_card_free(pci_get_drvdata(pci)); |
394 | pci_set_drvdata(pci, NULL); | |
395 | } | |
396 | ||
397 | static struct pci_driver driver = { | |
3733e424 | 398 | .name = KBUILD_MODNAME, |
9b4ffa48 JK |
399 | .id_table = snd_cs5535audio_ids, |
400 | .probe = snd_cs5535audio_probe, | |
401 | .remove = __devexit_p(snd_cs5535audio_remove), | |
9ac25594 JK |
402 | #ifdef CONFIG_PM |
403 | .suspend = snd_cs5535audio_suspend, | |
404 | .resume = snd_cs5535audio_resume, | |
405 | #endif | |
9b4ffa48 JK |
406 | }; |
407 | ||
408 | static int __init alsa_card_cs5535audio_init(void) | |
409 | { | |
e329113c | 410 | return pci_register_driver(&driver); |
9b4ffa48 JK |
411 | } |
412 | ||
413 | static void __exit alsa_card_cs5535audio_exit(void) | |
414 | { | |
415 | pci_unregister_driver(&driver); | |
416 | } | |
417 | ||
418 | module_init(alsa_card_cs5535audio_init) | |
419 | module_exit(alsa_card_cs5535audio_exit) | |
420 | ||
421 | MODULE_AUTHOR("Jaya Kumar"); | |
422 | MODULE_LICENSE("GPL"); | |
423 | MODULE_DESCRIPTION("CS5535 Audio"); | |
424 | MODULE_SUPPORTED_DEVICE("CS5535 Audio"); |