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23#include <linux/slab.h>
24#include <linux/vmalloc.h>
25#include <linux/delay.h>
26#include <sound/core.h>
27#include <sound/asoundef.h>
28#include "pdaudiocf.h"
29
30
31
32
33
34
35
36static struct page *snd_pcm_get_vmalloc_page(struct snd_pcm_substream *subs, unsigned long offset)
37{
38 void *pageptr = subs->runtime->dma_area + offset;
39 return vmalloc_to_page(pageptr);
40}
41
42
43
44
45
46static int snd_pcm_alloc_vmalloc_buffer(struct snd_pcm_substream *subs, size_t size)
47{
48 struct snd_pcm_runtime *runtime = subs->runtime;
49 if (runtime->dma_area) {
50 if (runtime->dma_bytes >= size)
51 return 0;
52 vfree(runtime->dma_area);
53 }
54 runtime->dma_area = vmalloc_32(size);
55 if (! runtime->dma_area)
56 return -ENOMEM;
57 runtime->dma_bytes = size;
58 return 0;
59}
60
61
62
63
64
65static int snd_pcm_free_vmalloc_buffer(struct snd_pcm_substream *subs)
66{
67 struct snd_pcm_runtime *runtime = subs->runtime;
68
69 vfree(runtime->dma_area);
70 runtime->dma_area = NULL;
71 return 0;
72}
73
74
75
76
77static int pdacf_pcm_clear_sram(struct snd_pdacf *chip)
78{
79 int max_loop = 64 * 1024;
80
81 while (inw(chip->port + PDAUDIOCF_REG_RDP) != inw(chip->port + PDAUDIOCF_REG_WDP)) {
82 if (max_loop-- < 0)
83 return -EIO;
84 inw(chip->port + PDAUDIOCF_REG_MD);
85 }
86 return 0;
87}
88
89
90
91
92static int pdacf_pcm_trigger(struct snd_pcm_substream *subs, int cmd)
93{
94 struct snd_pdacf *chip = snd_pcm_substream_chip(subs);
95 struct snd_pcm_runtime *runtime = subs->runtime;
96 int inc, ret = 0, rate;
97 unsigned short mask, val, tmp;
98
99 if (chip->chip_status & PDAUDIOCF_STAT_IS_STALE)
100 return -EBUSY;
101
102 switch (cmd) {
103 case SNDRV_PCM_TRIGGER_START:
104 chip->pcm_hwptr = 0;
105 chip->pcm_tdone = 0;
106
107 case SNDRV_PCM_TRIGGER_PAUSE_RELEASE:
108 case SNDRV_PCM_TRIGGER_RESUME:
109 mask = 0;
110 val = PDAUDIOCF_RECORD;
111 inc = 1;
112 rate = snd_ak4117_check_rate_and_errors(chip->ak4117, AK4117_CHECK_NO_STAT|AK4117_CHECK_NO_RATE);
113 break;
114 case SNDRV_PCM_TRIGGER_STOP:
115 case SNDRV_PCM_TRIGGER_PAUSE_PUSH:
116 case SNDRV_PCM_TRIGGER_SUSPEND:
117 mask = PDAUDIOCF_RECORD;
118 val = 0;
119 inc = -1;
120 rate = 0;
121 break;
122 default:
123 return -EINVAL;
124 }
125 spin_lock(&chip->reg_lock);
126 chip->pcm_running += inc;
127 tmp = pdacf_reg_read(chip, PDAUDIOCF_REG_SCR);
128 if (chip->pcm_running) {
129 if ((chip->ak4117->rcs0 & AK4117_UNLCK) || runtime->rate != rate) {
130 chip->pcm_running -= inc;
131 ret = -EIO;
132 goto __end;
133 }
134 }
135 tmp &= ~mask;
136 tmp |= val;
137 pdacf_reg_write(chip, PDAUDIOCF_REG_SCR, tmp);
138 __end:
139 spin_unlock(&chip->reg_lock);
140 snd_ak4117_check_rate_and_errors(chip->ak4117, AK4117_CHECK_NO_RATE);
141 return ret;
142}
143
144
145
146
147static int pdacf_pcm_hw_params(struct snd_pcm_substream *subs,
148 struct snd_pcm_hw_params *hw_params)
149{
150 return snd_pcm_alloc_vmalloc_buffer(subs, params_buffer_bytes(hw_params));
151}
152
153
154
155
156static int pdacf_pcm_hw_free(struct snd_pcm_substream *subs)
157{
158 return snd_pcm_free_vmalloc_buffer(subs);
159}
160
161
162
163
164static int pdacf_pcm_prepare(struct snd_pcm_substream *subs)
165{
166 struct snd_pdacf *chip = snd_pcm_substream_chip(subs);
167 struct snd_pcm_runtime *runtime = subs->runtime;
168 u16 val, nval, aval;
169
170 if (chip->chip_status & PDAUDIOCF_STAT_IS_STALE)
171 return -EBUSY;
172
173 chip->pcm_channels = runtime->channels;
174
175 chip->pcm_little = snd_pcm_format_little_endian(runtime->format) > 0;
176#ifdef SNDRV_LITTLE_ENDIAN
177 chip->pcm_swab = snd_pcm_format_big_endian(runtime->format) > 0;
178#else
179 chip->pcm_swab = chip->pcm_little;
180#endif
181
182 if (snd_pcm_format_unsigned(runtime->format))
183 chip->pcm_xor = 0x80008000;
184
185 if (pdacf_pcm_clear_sram(chip) < 0)
186 return -EIO;
187
188 val = nval = pdacf_reg_read(chip, PDAUDIOCF_REG_SCR);
189 nval &= ~(PDAUDIOCF_DATAFMT0|PDAUDIOCF_DATAFMT1);
190 switch (runtime->format) {
191 case SNDRV_PCM_FORMAT_S16_LE:
192 case SNDRV_PCM_FORMAT_S16_BE:
193 break;
194 default:
195 nval |= PDAUDIOCF_DATAFMT0 | PDAUDIOCF_DATAFMT1;
196 break;
197 }
198 aval = 0;
199 chip->pcm_sample = 4;
200 switch (runtime->format) {
201 case SNDRV_PCM_FORMAT_S16_LE:
202 case SNDRV_PCM_FORMAT_S16_BE:
203 aval = AK4117_DIF_16R;
204 chip->pcm_frame = 2;
205 chip->pcm_sample = 2;
206 break;
207 case SNDRV_PCM_FORMAT_S24_3LE:
208 case SNDRV_PCM_FORMAT_S24_3BE:
209 chip->pcm_sample = 3;
210
211 default:
212 aval = AK4117_DIF_24R;
213 chip->pcm_frame = 3;
214 chip->pcm_xor &= 0xffff0000;
215 break;
216 }
217
218 if (val != nval) {
219 snd_ak4117_reg_write(chip->ak4117, AK4117_REG_IO, AK4117_DIF2|AK4117_DIF1|AK4117_DIF0, aval);
220 pdacf_reg_write(chip, PDAUDIOCF_REG_SCR, nval);
221 }
222
223 val = pdacf_reg_read(chip, PDAUDIOCF_REG_IER);
224 val &= ~(PDAUDIOCF_IRQLVLEN1);
225 val |= PDAUDIOCF_IRQLVLEN0;
226 pdacf_reg_write(chip, PDAUDIOCF_REG_IER, val);
227
228 chip->pcm_size = runtime->buffer_size;
229 chip->pcm_period = runtime->period_size;
230 chip->pcm_area = runtime->dma_area;
231
232 return 0;
233}
234
235
236
237
238
239
240static struct snd_pcm_hardware pdacf_pcm_capture_hw = {
241 .info = (SNDRV_PCM_INFO_MMAP | SNDRV_PCM_INFO_INTERLEAVED |
242 SNDRV_PCM_INFO_PAUSE | SNDRV_PCM_INFO_RESUME |
243 SNDRV_PCM_INFO_MMAP_VALID),
244 .formats = SNDRV_PCM_FMTBIT_S16_LE | SNDRV_PCM_FMTBIT_S16_BE |
245 SNDRV_PCM_FMTBIT_S24_3LE | SNDRV_PCM_FMTBIT_S24_3BE |
246 SNDRV_PCM_FMTBIT_S32_LE | SNDRV_PCM_FMTBIT_S32_BE,
247 .rates = SNDRV_PCM_RATE_32000 |
248 SNDRV_PCM_RATE_44100 |
249 SNDRV_PCM_RATE_48000 |
250 SNDRV_PCM_RATE_88200 |
251 SNDRV_PCM_RATE_96000 |
252 SNDRV_PCM_RATE_176400 |
253 SNDRV_PCM_RATE_192000,
254 .rate_min = 32000,
255 .rate_max = 192000,
256 .channels_min = 1,
257 .channels_max = 2,
258 .buffer_bytes_max = (512*1024),
259 .period_bytes_min = 8*1024,
260 .period_bytes_max = (64*1024),
261 .periods_min = 2,
262 .periods_max = 128,
263 .fifo_size = 0,
264};
265
266
267
268
269
270static int pdacf_pcm_capture_open(struct snd_pcm_substream *subs)
271{
272 struct snd_pcm_runtime *runtime = subs->runtime;
273 struct snd_pdacf *chip = snd_pcm_substream_chip(subs);
274
275 if (chip->chip_status & PDAUDIOCF_STAT_IS_STALE)
276 return -EBUSY;
277
278 runtime->hw = pdacf_pcm_capture_hw;
279 runtime->private_data = chip;
280 chip->pcm_substream = subs;
281
282 return 0;
283}
284
285
286
287
288static int pdacf_pcm_capture_close(struct snd_pcm_substream *subs)
289{
290 struct snd_pdacf *chip = snd_pcm_substream_chip(subs);
291
292 if (!chip)
293 return -EINVAL;
294 pdacf_reinit(chip, 0);
295 chip->pcm_substream = NULL;
296 return 0;
297}
298
299
300
301
302
303static snd_pcm_uframes_t pdacf_pcm_capture_pointer(struct snd_pcm_substream *subs)
304{
305 struct snd_pdacf *chip = snd_pcm_substream_chip(subs);
306 return chip->pcm_hwptr;
307}
308
309
310
311
312static struct snd_pcm_ops pdacf_pcm_capture_ops = {
313 .open = pdacf_pcm_capture_open,
314 .close = pdacf_pcm_capture_close,
315 .ioctl = snd_pcm_lib_ioctl,
316 .hw_params = pdacf_pcm_hw_params,
317 .hw_free = pdacf_pcm_hw_free,
318 .prepare = pdacf_pcm_prepare,
319 .trigger = pdacf_pcm_trigger,
320 .pointer = pdacf_pcm_capture_pointer,
321 .page = snd_pcm_get_vmalloc_page,
322};
323
324
325
326
327
328int snd_pdacf_pcm_new(struct snd_pdacf *chip)
329{
330 struct snd_pcm *pcm;
331 int err;
332
333 err = snd_pcm_new(chip->card, "PDAudioCF", 0, 0, 1, &pcm);
334 if (err < 0)
335 return err;
336
337 snd_pcm_set_ops(pcm, SNDRV_PCM_STREAM_CAPTURE, &pdacf_pcm_capture_ops);
338
339 pcm->private_data = chip;
340 pcm->info_flags = 0;
341 strcpy(pcm->name, chip->card->shortname);
342 chip->pcm = pcm;
343
344 err = snd_ak4117_build(chip->ak4117, pcm->streams[SNDRV_PCM_STREAM_CAPTURE].substream);
345 if (err < 0)
346 return err;
347
348 return 0;
349}
350
