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9b4ffa48 JK |
1 | /* |
2 | * Driver for audio on multifunction CS5535 companion device | |
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 | * todo: add be fmt support, spdif, pm | |
23 | */ | |
24 | ||
25 | #include <linux/init.h> | |
26 | #include <linux/slab.h> | |
27 | #include <linux/pci.h> | |
28 | #include <sound/driver.h> | |
29 | #include <sound/core.h> | |
30 | #include <sound/control.h> | |
31 | #include <sound/initval.h> | |
32 | #include <sound/asoundef.h> | |
33 | #include <sound/pcm.h> | |
34 | #include <sound/pcm_params.h> | |
35 | #include <sound/ac97_codec.h> | |
36 | #include "cs5535audio.h" | |
37 | ||
66f8df6b | 38 | static struct snd_pcm_hardware snd_cs5535audio_playback = |
9b4ffa48 JK |
39 | { |
40 | .info = ( | |
41 | SNDRV_PCM_INFO_MMAP | | |
42 | SNDRV_PCM_INFO_INTERLEAVED | | |
43 | SNDRV_PCM_INFO_BLOCK_TRANSFER | | |
44 | SNDRV_PCM_INFO_MMAP_VALID | | |
45 | SNDRV_PCM_INFO_PAUSE | | |
9ac25594 | 46 | SNDRV_PCM_INFO_RESUME |
9b4ffa48 JK |
47 | ), |
48 | .formats = ( | |
49 | SNDRV_PCM_FMTBIT_S16_LE | |
50 | ), | |
51 | .rates = ( | |
52 | SNDRV_PCM_RATE_CONTINUOUS | | |
53 | SNDRV_PCM_RATE_8000_48000 | |
54 | ), | |
55 | .rate_min = 4000, | |
56 | .rate_max = 48000, | |
57 | .channels_min = 2, | |
58 | .channels_max = 2, | |
59 | .buffer_bytes_max = (128*1024), | |
60 | .period_bytes_min = 64, | |
61 | .period_bytes_max = (64*1024 - 16), | |
62 | .periods_min = 1, | |
63 | .periods_max = CS5535AUDIO_MAX_DESCRIPTORS, | |
64 | .fifo_size = 0, | |
65 | }; | |
66 | ||
66f8df6b | 67 | static struct snd_pcm_hardware snd_cs5535audio_capture = |
9b4ffa48 JK |
68 | { |
69 | .info = ( | |
70 | SNDRV_PCM_INFO_MMAP | | |
71 | SNDRV_PCM_INFO_INTERLEAVED | | |
72 | SNDRV_PCM_INFO_BLOCK_TRANSFER | | |
b83f346b | 73 | SNDRV_PCM_INFO_MMAP_VALID |
9b4ffa48 JK |
74 | ), |
75 | .formats = ( | |
76 | SNDRV_PCM_FMTBIT_S16_LE | |
77 | ), | |
78 | .rates = ( | |
79 | SNDRV_PCM_RATE_CONTINUOUS | | |
80 | SNDRV_PCM_RATE_8000_48000 | |
81 | ), | |
82 | .rate_min = 4000, | |
83 | .rate_max = 48000, | |
84 | .channels_min = 2, | |
85 | .channels_max = 2, | |
86 | .buffer_bytes_max = (128*1024), | |
87 | .period_bytes_min = 64, | |
88 | .period_bytes_max = (64*1024 - 16), | |
89 | .periods_min = 1, | |
90 | .periods_max = CS5535AUDIO_MAX_DESCRIPTORS, | |
91 | .fifo_size = 0, | |
92 | }; | |
93 | ||
66f8df6b | 94 | static int snd_cs5535audio_playback_open(struct snd_pcm_substream *substream) |
9b4ffa48 JK |
95 | { |
96 | int err; | |
66f8df6b TI |
97 | struct cs5535audio *cs5535au = snd_pcm_substream_chip(substream); |
98 | struct snd_pcm_runtime *runtime = substream->runtime; | |
9b4ffa48 JK |
99 | |
100 | runtime->hw = snd_cs5535audio_playback; | |
101 | cs5535au->playback_substream = substream; | |
102 | runtime->private_data = &(cs5535au->dmas[CS5535AUDIO_DMA_PLAYBACK]); | |
9b4ffa48 JK |
103 | if ((err = snd_pcm_hw_constraint_integer(runtime, |
104 | SNDRV_PCM_HW_PARAM_PERIODS)) < 0) | |
105 | return err; | |
106 | ||
107 | return 0; | |
108 | } | |
109 | ||
66f8df6b | 110 | static int snd_cs5535audio_playback_close(struct snd_pcm_substream *substream) |
9b4ffa48 JK |
111 | { |
112 | return 0; | |
113 | } | |
114 | ||
115 | #define CS5535AUDIO_DESC_LIST_SIZE \ | |
66f8df6b | 116 | PAGE_ALIGN(CS5535AUDIO_MAX_DESCRIPTORS * sizeof(struct cs5535audio_dma_desc)) |
9b4ffa48 | 117 | |
66f8df6b TI |
118 | static int cs5535audio_build_dma_packets(struct cs5535audio *cs5535au, |
119 | struct cs5535audio_dma *dma, | |
120 | struct snd_pcm_substream *substream, | |
121 | unsigned int periods, | |
122 | unsigned int period_bytes) | |
9b4ffa48 JK |
123 | { |
124 | unsigned int i; | |
125 | u32 addr, desc_addr, jmpprd_addr; | |
66f8df6b | 126 | struct cs5535audio_dma_desc *lastdesc; |
9b4ffa48 JK |
127 | |
128 | if (periods > CS5535AUDIO_MAX_DESCRIPTORS) | |
129 | return -ENOMEM; | |
130 | ||
131 | if (dma->desc_buf.area == NULL) { | |
132 | if (snd_dma_alloc_pages(SNDRV_DMA_TYPE_DEV, | |
133 | snd_dma_pci_data(cs5535au->pci), | |
134 | CS5535AUDIO_DESC_LIST_SIZE+1, | |
135 | &dma->desc_buf) < 0) | |
136 | return -ENOMEM; | |
137 | dma->period_bytes = dma->periods = 0; | |
138 | } | |
139 | ||
140 | if (dma->periods == periods && dma->period_bytes == period_bytes) | |
141 | return 0; | |
142 | ||
d6e05edc | 143 | /* the u32 cast is okay because in snd*create we successfully told |
9b4ffa48 JK |
144 | pci alloc that we're only 32 bit capable so the uppper will be 0 */ |
145 | addr = (u32) substream->runtime->dma_addr; | |
146 | desc_addr = (u32) dma->desc_buf.addr; | |
147 | for (i = 0; i < periods; i++) { | |
66f8df6b TI |
148 | struct cs5535audio_dma_desc *desc = |
149 | &((struct cs5535audio_dma_desc *) dma->desc_buf.area)[i]; | |
9b4ffa48 | 150 | desc->addr = cpu_to_le32(addr); |
3e873174 TI |
151 | desc->size = cpu_to_le32(period_bytes); |
152 | desc->ctlreserved = cpu_to_le32(PRD_EOP); | |
66f8df6b | 153 | desc_addr += sizeof(struct cs5535audio_dma_desc); |
9b4ffa48 JK |
154 | addr += period_bytes; |
155 | } | |
156 | /* we reserved one dummy descriptor at the end to do the PRD jump */ | |
66f8df6b | 157 | lastdesc = &((struct cs5535audio_dma_desc *) dma->desc_buf.area)[periods]; |
9b4ffa48 JK |
158 | lastdesc->addr = cpu_to_le32((u32) dma->desc_buf.addr); |
159 | lastdesc->size = 0; | |
3e873174 | 160 | lastdesc->ctlreserved = cpu_to_le32(PRD_JMP); |
9b4ffa48 | 161 | jmpprd_addr = cpu_to_le32(lastdesc->addr + |
66f8df6b | 162 | (sizeof(struct cs5535audio_dma_desc)*periods)); |
9b4ffa48 JK |
163 | |
164 | dma->period_bytes = period_bytes; | |
165 | dma->periods = periods; | |
166 | spin_lock_irq(&cs5535au->reg_lock); | |
167 | dma->ops->disable_dma(cs5535au); | |
168 | dma->ops->setup_prd(cs5535au, jmpprd_addr); | |
169 | spin_unlock_irq(&cs5535au->reg_lock); | |
170 | return 0; | |
171 | } | |
172 | ||
66f8df6b | 173 | static void cs5535audio_playback_enable_dma(struct cs5535audio *cs5535au) |
9b4ffa48 JK |
174 | { |
175 | cs_writeb(cs5535au, ACC_BM0_CMD, BM_CTL_EN); | |
176 | } | |
177 | ||
66f8df6b | 178 | static void cs5535audio_playback_disable_dma(struct cs5535audio *cs5535au) |
9b4ffa48 JK |
179 | { |
180 | cs_writeb(cs5535au, ACC_BM0_CMD, 0); | |
181 | } | |
182 | ||
66f8df6b | 183 | static void cs5535audio_playback_pause_dma(struct cs5535audio *cs5535au) |
9b4ffa48 JK |
184 | { |
185 | cs_writeb(cs5535au, ACC_BM0_CMD, BM_CTL_PAUSE); | |
186 | } | |
187 | ||
66f8df6b TI |
188 | static void cs5535audio_playback_setup_prd(struct cs5535audio *cs5535au, |
189 | u32 prd_addr) | |
9b4ffa48 JK |
190 | { |
191 | cs_writel(cs5535au, ACC_BM0_PRD, prd_addr); | |
192 | } | |
193 | ||
9ac25594 JK |
194 | static u32 cs5535audio_playback_read_prd(struct cs5535audio *cs5535au) |
195 | { | |
196 | return cs_readl(cs5535au, ACC_BM0_PRD); | |
197 | } | |
198 | ||
66f8df6b | 199 | static u32 cs5535audio_playback_read_dma_pntr(struct cs5535audio *cs5535au) |
9b4ffa48 JK |
200 | { |
201 | return cs_readl(cs5535au, ACC_BM0_PNTR); | |
202 | } | |
203 | ||
66f8df6b | 204 | static void cs5535audio_capture_enable_dma(struct cs5535audio *cs5535au) |
9b4ffa48 JK |
205 | { |
206 | cs_writeb(cs5535au, ACC_BM1_CMD, BM_CTL_EN); | |
207 | } | |
208 | ||
66f8df6b | 209 | static void cs5535audio_capture_disable_dma(struct cs5535audio *cs5535au) |
9b4ffa48 JK |
210 | { |
211 | cs_writeb(cs5535au, ACC_BM1_CMD, 0); | |
212 | } | |
213 | ||
66f8df6b | 214 | static void cs5535audio_capture_pause_dma(struct cs5535audio *cs5535au) |
9b4ffa48 JK |
215 | { |
216 | cs_writeb(cs5535au, ACC_BM1_CMD, BM_CTL_PAUSE); | |
217 | } | |
218 | ||
66f8df6b TI |
219 | static void cs5535audio_capture_setup_prd(struct cs5535audio *cs5535au, |
220 | u32 prd_addr) | |
9b4ffa48 JK |
221 | { |
222 | cs_writel(cs5535au, ACC_BM1_PRD, prd_addr); | |
223 | } | |
224 | ||
9ac25594 JK |
225 | static u32 cs5535audio_capture_read_prd(struct cs5535audio *cs5535au) |
226 | { | |
227 | return cs_readl(cs5535au, ACC_BM1_PRD); | |
228 | } | |
229 | ||
66f8df6b | 230 | static u32 cs5535audio_capture_read_dma_pntr(struct cs5535audio *cs5535au) |
9b4ffa48 JK |
231 | { |
232 | return cs_readl(cs5535au, ACC_BM1_PNTR); | |
233 | } | |
234 | ||
66f8df6b TI |
235 | static void cs5535audio_clear_dma_packets(struct cs5535audio *cs5535au, |
236 | struct cs5535audio_dma *dma, | |
237 | struct snd_pcm_substream *substream) | |
9b4ffa48 JK |
238 | { |
239 | snd_dma_free_pages(&dma->desc_buf); | |
240 | dma->desc_buf.area = NULL; | |
241 | } | |
242 | ||
66f8df6b TI |
243 | static int snd_cs5535audio_hw_params(struct snd_pcm_substream *substream, |
244 | struct snd_pcm_hw_params *hw_params) | |
9b4ffa48 | 245 | { |
66f8df6b TI |
246 | struct cs5535audio *cs5535au = snd_pcm_substream_chip(substream); |
247 | struct cs5535audio_dma *dma = substream->runtime->private_data; | |
9b4ffa48 JK |
248 | int err; |
249 | ||
250 | err = snd_pcm_lib_malloc_pages(substream, | |
251 | params_buffer_bytes(hw_params)); | |
252 | if (err < 0) | |
253 | return err; | |
254 | dma->buf_addr = substream->runtime->dma_addr; | |
255 | dma->buf_bytes = params_buffer_bytes(hw_params); | |
256 | ||
257 | err = cs5535audio_build_dma_packets(cs5535au, dma, substream, | |
66f8df6b TI |
258 | params_periods(hw_params), |
259 | params_period_bytes(hw_params)); | |
9b4ffa48 JK |
260 | return err; |
261 | } | |
262 | ||
66f8df6b | 263 | static int snd_cs5535audio_hw_free(struct snd_pcm_substream *substream) |
9b4ffa48 | 264 | { |
66f8df6b TI |
265 | struct cs5535audio *cs5535au = snd_pcm_substream_chip(substream); |
266 | struct cs5535audio_dma *dma = substream->runtime->private_data; | |
9b4ffa48 JK |
267 | |
268 | cs5535audio_clear_dma_packets(cs5535au, dma, substream); | |
269 | return snd_pcm_lib_free_pages(substream); | |
270 | } | |
271 | ||
66f8df6b | 272 | static int snd_cs5535audio_playback_prepare(struct snd_pcm_substream *substream) |
9b4ffa48 | 273 | { |
66f8df6b | 274 | struct cs5535audio *cs5535au = snd_pcm_substream_chip(substream); |
9b4ffa48 | 275 | return snd_ac97_set_rate(cs5535au->ac97, AC97_PCM_FRONT_DAC_RATE, |
66f8df6b | 276 | substream->runtime->rate); |
9b4ffa48 JK |
277 | } |
278 | ||
66f8df6b | 279 | static int snd_cs5535audio_trigger(struct snd_pcm_substream *substream, int cmd) |
9b4ffa48 | 280 | { |
66f8df6b TI |
281 | struct cs5535audio *cs5535au = snd_pcm_substream_chip(substream); |
282 | struct cs5535audio_dma *dma = substream->runtime->private_data; | |
3e873174 | 283 | int err = 0; |
9b4ffa48 | 284 | |
3e873174 | 285 | spin_lock(&cs5535au->reg_lock); |
9b4ffa48 | 286 | switch (cmd) { |
3e873174 TI |
287 | case SNDRV_PCM_TRIGGER_PAUSE_PUSH: |
288 | dma->ops->pause_dma(cs5535au); | |
289 | break; | |
290 | case SNDRV_PCM_TRIGGER_PAUSE_RELEASE: | |
291 | dma->ops->enable_dma(cs5535au); | |
292 | break; | |
293 | case SNDRV_PCM_TRIGGER_START: | |
294 | dma->ops->enable_dma(cs5535au); | |
295 | break; | |
9ac25594 JK |
296 | case SNDRV_PCM_TRIGGER_RESUME: |
297 | dma->ops->enable_dma(cs5535au); | |
298 | dma->suspended = 0; | |
299 | break; | |
3e873174 TI |
300 | case SNDRV_PCM_TRIGGER_STOP: |
301 | dma->ops->disable_dma(cs5535au); | |
302 | break; | |
9ac25594 JK |
303 | case SNDRV_PCM_TRIGGER_SUSPEND: |
304 | dma->ops->disable_dma(cs5535au); | |
305 | dma->suspended = 1; | |
306 | break; | |
3e873174 TI |
307 | default: |
308 | snd_printk(KERN_ERR "unhandled trigger\n"); | |
309 | err = -EINVAL; | |
310 | break; | |
9b4ffa48 | 311 | } |
3e873174 TI |
312 | spin_unlock(&cs5535au->reg_lock); |
313 | return err; | |
9b4ffa48 JK |
314 | } |
315 | ||
66f8df6b | 316 | static snd_pcm_uframes_t snd_cs5535audio_pcm_pointer(struct snd_pcm_substream |
9b4ffa48 JK |
317 | *substream) |
318 | { | |
66f8df6b | 319 | struct cs5535audio *cs5535au = snd_pcm_substream_chip(substream); |
9b4ffa48 | 320 | u32 curdma; |
66f8df6b | 321 | struct cs5535audio_dma *dma; |
9b4ffa48 JK |
322 | |
323 | dma = substream->runtime->private_data; | |
324 | curdma = dma->ops->read_dma_pntr(cs5535au); | |
325 | if (curdma < dma->buf_addr) { | |
326 | snd_printk(KERN_ERR "curdma=%x < %x bufaddr.\n", | |
327 | curdma, dma->buf_addr); | |
328 | return 0; | |
329 | } | |
330 | curdma -= dma->buf_addr; | |
331 | if (curdma >= dma->buf_bytes) { | |
332 | snd_printk(KERN_ERR "diff=%x >= %x buf_bytes.\n", | |
333 | curdma, dma->buf_bytes); | |
334 | return 0; | |
335 | } | |
336 | return bytes_to_frames(substream->runtime, curdma); | |
337 | } | |
338 | ||
66f8df6b | 339 | static int snd_cs5535audio_capture_open(struct snd_pcm_substream *substream) |
9b4ffa48 JK |
340 | { |
341 | int err; | |
66f8df6b TI |
342 | struct cs5535audio *cs5535au = snd_pcm_substream_chip(substream); |
343 | struct snd_pcm_runtime *runtime = substream->runtime; | |
9b4ffa48 JK |
344 | |
345 | runtime->hw = snd_cs5535audio_capture; | |
346 | cs5535au->capture_substream = substream; | |
347 | runtime->private_data = &(cs5535au->dmas[CS5535AUDIO_DMA_CAPTURE]); | |
9b4ffa48 JK |
348 | if ((err = snd_pcm_hw_constraint_integer(runtime, |
349 | SNDRV_PCM_HW_PARAM_PERIODS)) < 0) | |
350 | return err; | |
351 | return 0; | |
352 | } | |
353 | ||
66f8df6b | 354 | static int snd_cs5535audio_capture_close(struct snd_pcm_substream *substream) |
9b4ffa48 JK |
355 | { |
356 | return 0; | |
357 | } | |
358 | ||
66f8df6b | 359 | static int snd_cs5535audio_capture_prepare(struct snd_pcm_substream *substream) |
9b4ffa48 | 360 | { |
66f8df6b | 361 | struct cs5535audio *cs5535au = snd_pcm_substream_chip(substream); |
9b4ffa48 | 362 | return snd_ac97_set_rate(cs5535au->ac97, AC97_PCM_LR_ADC_RATE, |
66f8df6b | 363 | substream->runtime->rate); |
9b4ffa48 JK |
364 | } |
365 | ||
66f8df6b | 366 | static struct snd_pcm_ops snd_cs5535audio_playback_ops = { |
9b4ffa48 JK |
367 | .open = snd_cs5535audio_playback_open, |
368 | .close = snd_cs5535audio_playback_close, | |
369 | .ioctl = snd_pcm_lib_ioctl, | |
370 | .hw_params = snd_cs5535audio_hw_params, | |
371 | .hw_free = snd_cs5535audio_hw_free, | |
372 | .prepare = snd_cs5535audio_playback_prepare, | |
373 | .trigger = snd_cs5535audio_trigger, | |
374 | .pointer = snd_cs5535audio_pcm_pointer, | |
375 | }; | |
376 | ||
66f8df6b | 377 | static struct snd_pcm_ops snd_cs5535audio_capture_ops = { |
9b4ffa48 JK |
378 | .open = snd_cs5535audio_capture_open, |
379 | .close = snd_cs5535audio_capture_close, | |
380 | .ioctl = snd_pcm_lib_ioctl, | |
381 | .hw_params = snd_cs5535audio_hw_params, | |
382 | .hw_free = snd_cs5535audio_hw_free, | |
383 | .prepare = snd_cs5535audio_capture_prepare, | |
384 | .trigger = snd_cs5535audio_trigger, | |
385 | .pointer = snd_cs5535audio_pcm_pointer, | |
386 | }; | |
387 | ||
66f8df6b | 388 | static struct cs5535audio_dma_ops snd_cs5535audio_playback_dma_ops = { |
9b4ffa48 JK |
389 | .type = CS5535AUDIO_DMA_PLAYBACK, |
390 | .enable_dma = cs5535audio_playback_enable_dma, | |
391 | .disable_dma = cs5535audio_playback_disable_dma, | |
392 | .setup_prd = cs5535audio_playback_setup_prd, | |
9ac25594 | 393 | .read_prd = cs5535audio_playback_read_prd, |
9b4ffa48 JK |
394 | .pause_dma = cs5535audio_playback_pause_dma, |
395 | .read_dma_pntr = cs5535audio_playback_read_dma_pntr, | |
396 | }; | |
397 | ||
66f8df6b | 398 | static struct cs5535audio_dma_ops snd_cs5535audio_capture_dma_ops = { |
9b4ffa48 JK |
399 | .type = CS5535AUDIO_DMA_CAPTURE, |
400 | .enable_dma = cs5535audio_capture_enable_dma, | |
401 | .disable_dma = cs5535audio_capture_disable_dma, | |
402 | .setup_prd = cs5535audio_capture_setup_prd, | |
9ac25594 | 403 | .read_prd = cs5535audio_capture_read_prd, |
9b4ffa48 JK |
404 | .pause_dma = cs5535audio_capture_pause_dma, |
405 | .read_dma_pntr = cs5535audio_capture_read_dma_pntr, | |
406 | }; | |
407 | ||
66f8df6b | 408 | int __devinit snd_cs5535audio_pcm(struct cs5535audio *cs5535au) |
9b4ffa48 | 409 | { |
66f8df6b | 410 | struct snd_pcm *pcm; |
9b4ffa48 JK |
411 | int err; |
412 | ||
413 | err = snd_pcm_new(cs5535au->card, "CS5535 Audio", 0, 1, 1, &pcm); | |
414 | if (err < 0) | |
415 | return err; | |
416 | ||
417 | cs5535au->dmas[CS5535AUDIO_DMA_PLAYBACK].ops = | |
418 | &snd_cs5535audio_playback_dma_ops; | |
419 | cs5535au->dmas[CS5535AUDIO_DMA_CAPTURE].ops = | |
420 | &snd_cs5535audio_capture_dma_ops; | |
421 | snd_pcm_set_ops(pcm, SNDRV_PCM_STREAM_PLAYBACK, | |
422 | &snd_cs5535audio_playback_ops); | |
423 | snd_pcm_set_ops(pcm, SNDRV_PCM_STREAM_CAPTURE, | |
424 | &snd_cs5535audio_capture_ops); | |
425 | ||
426 | pcm->private_data = cs5535au; | |
9b4ffa48 JK |
427 | pcm->info_flags = 0; |
428 | strcpy(pcm->name, "CS5535 Audio"); | |
429 | ||
430 | snd_pcm_lib_preallocate_pages_for_all(pcm, SNDRV_DMA_TYPE_DEV, | |
431 | snd_dma_pci_data(cs5535au->pci), | |
432 | 64*1024, 128*1024); | |
9ac25594 | 433 | cs5535au->pcm = pcm; |
9b4ffa48 JK |
434 | |
435 | return 0; | |
436 | } | |
437 |