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apatard@mandriva.comf9b95982010-05-31 13:49:14 +02001/*
2 * kirkwood-i2s.c
3 *
4 * (c) 2010 Arnaud Patard <apatard@mandriva.com>
Arnaud Patard (Rtp)69737892010-09-09 14:10:33 +02005 * (c) 2010 Arnaud Patard <arnaud.patard@rtp-net.org>
apatard@mandriva.comf9b95982010-05-31 13:49:14 +02006 *
7 * This program is free software; you can redistribute it and/or modify it
8 * under the terms of the GNU General Public License as published by the
9 * Free Software Foundation; either version 2 of the License, or (at your
10 * option) any later version.
11 */
12
13#include <linux/init.h>
14#include <linux/module.h>
15#include <linux/platform_device.h>
16#include <linux/io.h>
17#include <linux/slab.h>
18#include <linux/mbus.h>
19#include <linux/delay.h>
20#include <sound/pcm.h>
21#include <sound/pcm_params.h>
22#include <sound/soc.h>
23#include <plat/audio.h>
apatard@mandriva.comf9b95982010-05-31 13:49:14 +020024#include "kirkwood.h"
25
26#define DRV_NAME "kirkwood-i2s"
27
28#define KIRKWOOD_I2S_RATES \
29 (SNDRV_PCM_RATE_44100 | \
30 SNDRV_PCM_RATE_48000 | SNDRV_PCM_RATE_96000)
31#define KIRKWOOD_I2S_FORMATS \
32 (SNDRV_PCM_FMTBIT_S16_LE | \
33 SNDRV_PCM_FMTBIT_S24_LE | \
34 SNDRV_PCM_FMTBIT_S32_LE)
35
apatard@mandriva.comf9b95982010-05-31 13:49:14 +020036static int kirkwood_i2s_set_fmt(struct snd_soc_dai *cpu_dai,
37 unsigned int fmt)
38{
Liam Girdwoodf0fba2a2010-03-17 20:15:21 +000039 struct kirkwood_dma_data *priv = snd_soc_dai_get_drvdata(cpu_dai);
apatard@mandriva.comf9b95982010-05-31 13:49:14 +020040 unsigned long mask;
41 unsigned long value;
42
43 switch (fmt & SND_SOC_DAIFMT_FORMAT_MASK) {
44 case SND_SOC_DAIFMT_RIGHT_J:
45 mask = KIRKWOOD_I2S_CTL_RJ;
46 break;
47 case SND_SOC_DAIFMT_LEFT_J:
48 mask = KIRKWOOD_I2S_CTL_LJ;
49 break;
50 case SND_SOC_DAIFMT_I2S:
51 mask = KIRKWOOD_I2S_CTL_I2S;
52 break;
53 default:
54 return -EINVAL;
55 }
56
57 /*
58 * Set same format for playback and record
59 * This avoids some troubles.
60 */
61 value = readl(priv->io+KIRKWOOD_I2S_PLAYCTL);
62 value &= ~KIRKWOOD_I2S_CTL_JUST_MASK;
63 value |= mask;
64 writel(value, priv->io+KIRKWOOD_I2S_PLAYCTL);
65
66 value = readl(priv->io+KIRKWOOD_I2S_RECCTL);
67 value &= ~KIRKWOOD_I2S_CTL_JUST_MASK;
68 value |= mask;
69 writel(value, priv->io+KIRKWOOD_I2S_RECCTL);
70
71 return 0;
72}
73
74static inline void kirkwood_set_dco(void __iomem *io, unsigned long rate)
75{
76 unsigned long value;
77
78 value = KIRKWOOD_DCO_CTL_OFFSET_0;
79 switch (rate) {
80 default:
81 case 44100:
82 value |= KIRKWOOD_DCO_CTL_FREQ_11;
83 break;
84 case 48000:
85 value |= KIRKWOOD_DCO_CTL_FREQ_12;
86 break;
87 case 96000:
88 value |= KIRKWOOD_DCO_CTL_FREQ_24;
89 break;
90 }
91 writel(value, io + KIRKWOOD_DCO_CTL);
92
93 /* wait for dco locked */
94 do {
95 cpu_relax();
96 value = readl(io + KIRKWOOD_DCO_SPCR_STATUS);
97 value &= KIRKWOOD_DCO_SPCR_STATUS;
98 } while (value == 0);
99}
100
Liam Girdwoodf0fba2a2010-03-17 20:15:21 +0000101static int kirkwood_i2s_startup(struct snd_pcm_substream *substream,
102 struct snd_soc_dai *dai)
103{
104 struct kirkwood_dma_data *priv = snd_soc_dai_get_drvdata(dai);
105
106 snd_soc_dai_set_dma_data(dai, substream, priv);
107 return 0;
108}
109
apatard@mandriva.comf9b95982010-05-31 13:49:14 +0200110static int kirkwood_i2s_hw_params(struct snd_pcm_substream *substream,
111 struct snd_pcm_hw_params *params,
112 struct snd_soc_dai *dai)
113{
Liam Girdwoodf0fba2a2010-03-17 20:15:21 +0000114 struct kirkwood_dma_data *priv = snd_soc_dai_get_drvdata(dai);
apatard@mandriva.comf9b95982010-05-31 13:49:14 +0200115 unsigned int i2s_reg, reg;
116 unsigned long i2s_value, value;
117
118 if (substream->stream == SNDRV_PCM_STREAM_PLAYBACK) {
119 i2s_reg = KIRKWOOD_I2S_PLAYCTL;
120 reg = KIRKWOOD_PLAYCTL;
121 } else {
122 i2s_reg = KIRKWOOD_I2S_RECCTL;
123 reg = KIRKWOOD_RECCTL;
124 }
125
126 /* set dco conf */
127 kirkwood_set_dco(priv->io, params_rate(params));
128
129 i2s_value = readl(priv->io+i2s_reg);
130 i2s_value &= ~KIRKWOOD_I2S_CTL_SIZE_MASK;
131
132 value = readl(priv->io+reg);
133 value &= ~KIRKWOOD_PLAYCTL_SIZE_MASK;
134
135 /*
136 * Size settings in play/rec i2s control regs and play/rec control
137 * regs must be the same.
138 */
139 switch (params_format(params)) {
140 case SNDRV_PCM_FORMAT_S16_LE:
141 i2s_value |= KIRKWOOD_I2S_CTL_SIZE_16;
142 value |= KIRKWOOD_PLAYCTL_SIZE_16_C;
143 break;
144 /*
145 * doesn't work... S20_3LE != kirkwood 20bit format ?
146 *
147 case SNDRV_PCM_FORMAT_S20_3LE:
148 i2s_value |= KIRKWOOD_I2S_CTL_SIZE_20;
149 value |= KIRKWOOD_PLAYCTL_SIZE_20;
150 break;
151 */
152 case SNDRV_PCM_FORMAT_S24_LE:
153 i2s_value |= KIRKWOOD_I2S_CTL_SIZE_24;
154 value |= KIRKWOOD_PLAYCTL_SIZE_24;
155 break;
156 case SNDRV_PCM_FORMAT_S32_LE:
157 i2s_value |= KIRKWOOD_I2S_CTL_SIZE_32;
158 value |= KIRKWOOD_PLAYCTL_SIZE_32;
159 break;
160 default:
161 return -EINVAL;
162 }
arnaud.patard@rtp-net.orgdfe4c932010-07-11 23:28:31 +0200163
164 if (substream->stream == SNDRV_PCM_STREAM_PLAYBACK) {
165 value &= ~KIRKWOOD_PLAYCTL_MONO_MASK;
166 if (params_channels(params) == 1)
167 value |= KIRKWOOD_PLAYCTL_MONO_BOTH;
168 else
169 value |= KIRKWOOD_PLAYCTL_MONO_OFF;
170 }
171
apatard@mandriva.comf9b95982010-05-31 13:49:14 +0200172 writel(i2s_value, priv->io+i2s_reg);
173 writel(value, priv->io+reg);
174
175 return 0;
176}
177
178static int kirkwood_i2s_play_trigger(struct snd_pcm_substream *substream,
179 int cmd, struct snd_soc_dai *dai)
180{
Liam Girdwoodf0fba2a2010-03-17 20:15:21 +0000181 struct kirkwood_dma_data *priv = snd_soc_dai_get_drvdata(dai);
apatard@mandriva.comf9b95982010-05-31 13:49:14 +0200182 unsigned long value;
183
184 /*
185 * specs says KIRKWOOD_PLAYCTL must be read 2 times before
186 * changing it. So read 1 time here and 1 later.
187 */
188 value = readl(priv->io + KIRKWOOD_PLAYCTL);
189
190 switch (cmd) {
191 case SNDRV_PCM_TRIGGER_START:
192 /* stop audio, enable interrupts */
193 value = readl(priv->io + KIRKWOOD_PLAYCTL);
194 value |= KIRKWOOD_PLAYCTL_PAUSE;
195 writel(value, priv->io + KIRKWOOD_PLAYCTL);
196
197 value = readl(priv->io + KIRKWOOD_INT_MASK);
198 value |= KIRKWOOD_INT_CAUSE_PLAY_BYTES;
199 writel(value, priv->io + KIRKWOOD_INT_MASK);
200
201 /* configure audio & enable i2s playback */
202 value = readl(priv->io + KIRKWOOD_PLAYCTL);
203 value &= ~KIRKWOOD_PLAYCTL_BURST_MASK;
arnaud.patard@rtp-net.orgb424ec92010-07-11 23:28:32 +0200204 value &= ~(KIRKWOOD_PLAYCTL_PAUSE | KIRKWOOD_PLAYCTL_I2S_MUTE
205 | KIRKWOOD_PLAYCTL_SPDIF_EN);
apatard@mandriva.comf9b95982010-05-31 13:49:14 +0200206
207 if (priv->burst == 32)
208 value |= KIRKWOOD_PLAYCTL_BURST_32;
209 else
210 value |= KIRKWOOD_PLAYCTL_BURST_128;
211 value |= KIRKWOOD_PLAYCTL_I2S_EN;
212 writel(value, priv->io + KIRKWOOD_PLAYCTL);
213 break;
214
215 case SNDRV_PCM_TRIGGER_STOP:
216 /* stop audio, disable interrupts */
217 value = readl(priv->io + KIRKWOOD_PLAYCTL);
arnaud.patard@rtp-net.orgb424ec92010-07-11 23:28:32 +0200218 value |= KIRKWOOD_PLAYCTL_PAUSE | KIRKWOOD_PLAYCTL_I2S_MUTE;
apatard@mandriva.comf9b95982010-05-31 13:49:14 +0200219 writel(value, priv->io + KIRKWOOD_PLAYCTL);
220
221 value = readl(priv->io + KIRKWOOD_INT_MASK);
222 value &= ~KIRKWOOD_INT_CAUSE_PLAY_BYTES;
223 writel(value, priv->io + KIRKWOOD_INT_MASK);
224
225 /* disable all playbacks */
226 value = readl(priv->io + KIRKWOOD_PLAYCTL);
227 value &= ~(KIRKWOOD_PLAYCTL_I2S_EN | KIRKWOOD_PLAYCTL_SPDIF_EN);
228 writel(value, priv->io + KIRKWOOD_PLAYCTL);
229 break;
230
231 case SNDRV_PCM_TRIGGER_PAUSE_PUSH:
232 case SNDRV_PCM_TRIGGER_SUSPEND:
233 value = readl(priv->io + KIRKWOOD_PLAYCTL);
arnaud.patard@rtp-net.orgb424ec92010-07-11 23:28:32 +0200234 value |= KIRKWOOD_PLAYCTL_PAUSE | KIRKWOOD_PLAYCTL_I2S_MUTE;
apatard@mandriva.comf9b95982010-05-31 13:49:14 +0200235 writel(value, priv->io + KIRKWOOD_PLAYCTL);
236 break;
237
238 case SNDRV_PCM_TRIGGER_RESUME:
239 case SNDRV_PCM_TRIGGER_PAUSE_RELEASE:
240 value = readl(priv->io + KIRKWOOD_PLAYCTL);
arnaud.patard@rtp-net.orgb424ec92010-07-11 23:28:32 +0200241 value &= ~(KIRKWOOD_PLAYCTL_PAUSE | KIRKWOOD_PLAYCTL_I2S_MUTE);
apatard@mandriva.comf9b95982010-05-31 13:49:14 +0200242 writel(value, priv->io + KIRKWOOD_PLAYCTL);
243 break;
244
245 default:
246 return -EINVAL;
247 }
248
249 return 0;
250}
251
252static int kirkwood_i2s_rec_trigger(struct snd_pcm_substream *substream,
253 int cmd, struct snd_soc_dai *dai)
254{
Liam Girdwoodf0fba2a2010-03-17 20:15:21 +0000255 struct kirkwood_dma_data *priv = snd_soc_dai_get_drvdata(dai);
apatard@mandriva.comf9b95982010-05-31 13:49:14 +0200256 unsigned long value;
257
258 value = readl(priv->io + KIRKWOOD_RECCTL);
259
260 switch (cmd) {
261 case SNDRV_PCM_TRIGGER_START:
262 /* stop audio, enable interrupts */
263 value = readl(priv->io + KIRKWOOD_RECCTL);
264 value |= KIRKWOOD_RECCTL_PAUSE;
265 writel(value, priv->io + KIRKWOOD_RECCTL);
266
267 value = readl(priv->io + KIRKWOOD_INT_MASK);
268 value |= KIRKWOOD_INT_CAUSE_REC_BYTES;
269 writel(value, priv->io + KIRKWOOD_INT_MASK);
270
271 /* configure audio & enable i2s record */
272 value = readl(priv->io + KIRKWOOD_RECCTL);
273 value &= ~KIRKWOOD_RECCTL_BURST_MASK;
274 value &= ~KIRKWOOD_RECCTL_MONO;
arnaud.patard@rtp-net.orgb424ec92010-07-11 23:28:32 +0200275 value &= ~(KIRKWOOD_RECCTL_PAUSE | KIRKWOOD_RECCTL_MUTE
276 | KIRKWOOD_RECCTL_SPDIF_EN);
apatard@mandriva.comf9b95982010-05-31 13:49:14 +0200277
278 if (priv->burst == 32)
279 value |= KIRKWOOD_RECCTL_BURST_32;
280 else
281 value |= KIRKWOOD_RECCTL_BURST_128;
282 value |= KIRKWOOD_RECCTL_I2S_EN;
283
284 writel(value, priv->io + KIRKWOOD_RECCTL);
285 break;
286
287 case SNDRV_PCM_TRIGGER_STOP:
288 /* stop audio, disable interrupts */
289 value = readl(priv->io + KIRKWOOD_RECCTL);
arnaud.patard@rtp-net.orgb424ec92010-07-11 23:28:32 +0200290 value |= KIRKWOOD_RECCTL_PAUSE | KIRKWOOD_RECCTL_MUTE;
apatard@mandriva.comf9b95982010-05-31 13:49:14 +0200291 writel(value, priv->io + KIRKWOOD_RECCTL);
292
293 value = readl(priv->io + KIRKWOOD_INT_MASK);
294 value &= ~KIRKWOOD_INT_CAUSE_REC_BYTES;
295 writel(value, priv->io + KIRKWOOD_INT_MASK);
296
297 /* disable all records */
298 value = readl(priv->io + KIRKWOOD_RECCTL);
299 value &= ~(KIRKWOOD_RECCTL_I2S_EN | KIRKWOOD_RECCTL_SPDIF_EN);
300 writel(value, priv->io + KIRKWOOD_RECCTL);
301 break;
302
303 case SNDRV_PCM_TRIGGER_PAUSE_PUSH:
304 case SNDRV_PCM_TRIGGER_SUSPEND:
305 value = readl(priv->io + KIRKWOOD_RECCTL);
arnaud.patard@rtp-net.orgb424ec92010-07-11 23:28:32 +0200306 value |= KIRKWOOD_RECCTL_PAUSE | KIRKWOOD_RECCTL_MUTE;
apatard@mandriva.comf9b95982010-05-31 13:49:14 +0200307 writel(value, priv->io + KIRKWOOD_RECCTL);
308 break;
309
310 case SNDRV_PCM_TRIGGER_RESUME:
311 case SNDRV_PCM_TRIGGER_PAUSE_RELEASE:
312 value = readl(priv->io + KIRKWOOD_RECCTL);
arnaud.patard@rtp-net.orgb424ec92010-07-11 23:28:32 +0200313 value &= ~(KIRKWOOD_RECCTL_PAUSE | KIRKWOOD_RECCTL_MUTE);
apatard@mandriva.comf9b95982010-05-31 13:49:14 +0200314 writel(value, priv->io + KIRKWOOD_RECCTL);
315 break;
316
317 default:
318 return -EINVAL;
apatard@mandriva.comf9b95982010-05-31 13:49:14 +0200319 }
320
321 return 0;
322}
323
324static int kirkwood_i2s_trigger(struct snd_pcm_substream *substream, int cmd,
325 struct snd_soc_dai *dai)
326{
327 if (substream->stream == SNDRV_PCM_STREAM_PLAYBACK)
328 return kirkwood_i2s_play_trigger(substream, cmd, dai);
329 else
330 return kirkwood_i2s_rec_trigger(substream, cmd, dai);
331
332 return 0;
333}
334
Liam Girdwoodf0fba2a2010-03-17 20:15:21 +0000335static int kirkwood_i2s_probe(struct snd_soc_dai *dai)
apatard@mandriva.comf9b95982010-05-31 13:49:14 +0200336{
Liam Girdwoodf0fba2a2010-03-17 20:15:21 +0000337 struct kirkwood_dma_data *priv = snd_soc_dai_get_drvdata(dai);
apatard@mandriva.comf9b95982010-05-31 13:49:14 +0200338 unsigned long value;
339 unsigned int reg_data;
340
341 /* put system in a "safe" state : */
342 /* disable audio interrupts */
343 writel(0xffffffff, priv->io + KIRKWOOD_INT_CAUSE);
344 writel(0, priv->io + KIRKWOOD_INT_MASK);
345
346 reg_data = readl(priv->io + 0x1200);
347 reg_data &= (~(0x333FF8));
348 reg_data |= 0x111D18;
349 writel(reg_data, priv->io + 0x1200);
350
351 msleep(500);
352
353 reg_data = readl(priv->io + 0x1200);
354 reg_data &= (~(0x333FF8));
355 reg_data |= 0x111D18;
356 writel(reg_data, priv->io + 0x1200);
357
358 /* disable playback/record */
359 value = readl(priv->io + KIRKWOOD_PLAYCTL);
360 value &= ~(KIRKWOOD_PLAYCTL_I2S_EN|KIRKWOOD_PLAYCTL_SPDIF_EN);
361 writel(value, priv->io + KIRKWOOD_PLAYCTL);
362
363 value = readl(priv->io + KIRKWOOD_RECCTL);
364 value &= ~(KIRKWOOD_RECCTL_I2S_EN | KIRKWOOD_RECCTL_SPDIF_EN);
365 writel(value, priv->io + KIRKWOOD_RECCTL);
366
367 return 0;
368
369}
370
Liam Girdwoodf0fba2a2010-03-17 20:15:21 +0000371static int kirkwood_i2s_remove(struct snd_soc_dai *dai)
apatard@mandriva.comf9b95982010-05-31 13:49:14 +0200372{
Liam Girdwoodf0fba2a2010-03-17 20:15:21 +0000373 return 0;
apatard@mandriva.comf9b95982010-05-31 13:49:14 +0200374}
375
376static struct snd_soc_dai_ops kirkwood_i2s_dai_ops = {
Liam Girdwoodf0fba2a2010-03-17 20:15:21 +0000377 .startup = kirkwood_i2s_startup,
apatard@mandriva.comf9b95982010-05-31 13:49:14 +0200378 .trigger = kirkwood_i2s_trigger,
379 .hw_params = kirkwood_i2s_hw_params,
380 .set_fmt = kirkwood_i2s_set_fmt,
381};
382
383
Liam Girdwoodf0fba2a2010-03-17 20:15:21 +0000384static struct snd_soc_dai_driver kirkwood_i2s_dai = {
apatard@mandriva.comf9b95982010-05-31 13:49:14 +0200385 .probe = kirkwood_i2s_probe,
386 .remove = kirkwood_i2s_remove,
387 .playback = {
388 .channels_min = 1,
389 .channels_max = 2,
390 .rates = KIRKWOOD_I2S_RATES,
391 .formats = KIRKWOOD_I2S_FORMATS,},
392 .capture = {
393 .channels_min = 1,
394 .channels_max = 2,
395 .rates = KIRKWOOD_I2S_RATES,
396 .formats = KIRKWOOD_I2S_FORMATS,},
397 .ops = &kirkwood_i2s_dai_ops,
398};
apatard@mandriva.comf9b95982010-05-31 13:49:14 +0200399
400static __devinit int kirkwood_i2s_dev_probe(struct platform_device *pdev)
401{
402 struct resource *mem;
403 struct kirkwood_asoc_platform_data *data =
404 pdev->dev.platform_data;
Liam Girdwoodf0fba2a2010-03-17 20:15:21 +0000405 struct kirkwood_dma_data *priv;
apatard@mandriva.comf9b95982010-05-31 13:49:14 +0200406 int err;
407
408 priv = kzalloc(sizeof(struct kirkwood_dma_data), GFP_KERNEL);
409 if (!priv) {
410 dev_err(&pdev->dev, "allocation failed\n");
411 err = -ENOMEM;
412 goto error;
413 }
Liam Girdwoodf0fba2a2010-03-17 20:15:21 +0000414 dev_set_drvdata(&pdev->dev, priv);
apatard@mandriva.comf9b95982010-05-31 13:49:14 +0200415
416 mem = platform_get_resource(pdev, IORESOURCE_MEM, 0);
417 if (!mem) {
418 dev_err(&pdev->dev, "platform_get_resource failed\n");
419 err = -ENXIO;
420 goto err_alloc;
421 }
422
423 priv->mem = request_mem_region(mem->start, SZ_16K, DRV_NAME);
424 if (!priv->mem) {
425 dev_err(&pdev->dev, "request_mem_region failed\n");
426 err = -EBUSY;
427 goto error;
428 }
429
430 priv->io = ioremap(priv->mem->start, SZ_16K);
431 if (!priv->io) {
432 dev_err(&pdev->dev, "ioremap failed\n");
433 err = -ENOMEM;
434 goto err_iomem;
435 }
436
437 priv->irq = platform_get_irq(pdev, 0);
438 if (priv->irq <= 0) {
439 dev_err(&pdev->dev, "platform_get_irq failed\n");
440 err = -ENXIO;
441 goto err_ioremap;
442 }
443
444 if (!data || !data->dram) {
445 dev_err(&pdev->dev, "no platform data ?!\n");
446 err = -EINVAL;
447 goto err_ioremap;
448 }
449
450 priv->dram = data->dram;
451 priv->burst = data->burst;
452
Liam Girdwoodf0fba2a2010-03-17 20:15:21 +0000453 return snd_soc_register_dai(&pdev->dev, &kirkwood_i2s_dai);
apatard@mandriva.comf9b95982010-05-31 13:49:14 +0200454
455err_ioremap:
456 iounmap(priv->io);
457err_iomem:
458 release_mem_region(priv->mem->start, SZ_16K);
459err_alloc:
460 kfree(priv);
461error:
462 return err;
463}
464
465static __devexit int kirkwood_i2s_dev_remove(struct platform_device *pdev)
466{
Liam Girdwoodf0fba2a2010-03-17 20:15:21 +0000467 struct kirkwood_dma_data *priv = dev_get_drvdata(&pdev->dev);
468
469 snd_soc_unregister_dai(&pdev->dev);
470 iounmap(priv->io);
471 release_mem_region(priv->mem->start, SZ_16K);
472 kfree(priv);
473
apatard@mandriva.comf9b95982010-05-31 13:49:14 +0200474 return 0;
475}
476
477static struct platform_driver kirkwood_i2s_driver = {
478 .probe = kirkwood_i2s_dev_probe,
479 .remove = kirkwood_i2s_dev_remove,
480 .driver = {
481 .name = DRV_NAME,
482 .owner = THIS_MODULE,
483 },
484};
485
486static int __init kirkwood_i2s_init(void)
487{
488 return platform_driver_register(&kirkwood_i2s_driver);
489}
490module_init(kirkwood_i2s_init);
491
492static void __exit kirkwood_i2s_exit(void)
493{
494 platform_driver_unregister(&kirkwood_i2s_driver);
495}
496module_exit(kirkwood_i2s_exit);
497
498/* Module information */
Arnaud Patard (Rtp)69737892010-09-09 14:10:33 +0200499MODULE_AUTHOR("Arnaud Patard, <arnaud.patard@rtp-net.org>");
apatard@mandriva.comf9b95982010-05-31 13:49:14 +0200500MODULE_DESCRIPTION("Kirkwood I2S SoC Interface");
501MODULE_LICENSE("GPL");
502MODULE_ALIAS("platform:kirkwood-i2s");