xref: /openbmc/linux/sound/soc/pxa/mmp-sspa.c (revision 598d2dce)
1 // SPDX-License-Identifier: GPL-2.0-or-later
2 /*
3  * linux/sound/soc/pxa/mmp-sspa.c
4  * Base on pxa2xx-ssp.c
5  *
6  * Copyright (C) 2011 Marvell International Ltd.
7  */
8 #include <linux/init.h>
9 #include <linux/module.h>
10 #include <linux/platform_device.h>
11 #include <linux/delay.h>
12 #include <linux/clk.h>
13 #include <linux/slab.h>
14 #include <linux/io.h>
15 #include <linux/dmaengine.h>
16 #include <linux/pm_runtime.h>
17 
18 #include <sound/core.h>
19 #include <sound/pcm.h>
20 #include <sound/initval.h>
21 #include <sound/pcm_params.h>
22 #include <sound/soc.h>
23 #include <sound/pxa2xx-lib.h>
24 #include <sound/dmaengine_pcm.h>
25 #include "mmp-sspa.h"
26 
27 /*
28  * SSPA audio private data
29  */
30 struct sspa_priv {
31 	void __iomem *tx_base;
32 	void __iomem *rx_base;
33 
34 	struct snd_dmaengine_dai_dma_data playback_dma_data;
35 	struct snd_dmaengine_dai_dma_data capture_dma_data;
36 	struct clk *clk;
37 	struct clk *audio_clk;
38 	struct clk *sysclk;
39 
40 	int running_cnt;
41 	u32 sp;
42 	u32 ctrl;
43 };
44 
mmp_sspa_tx_enable(struct sspa_priv * sspa)45 static void mmp_sspa_tx_enable(struct sspa_priv *sspa)
46 {
47 	unsigned int sspa_sp = sspa->sp;
48 
49 	sspa_sp &= ~SSPA_SP_MSL;
50 	sspa_sp |= SSPA_SP_S_EN;
51 	sspa_sp |= SSPA_SP_WEN;
52 	__raw_writel(sspa_sp, sspa->tx_base + SSPA_SP);
53 }
54 
mmp_sspa_tx_disable(struct sspa_priv * sspa)55 static void mmp_sspa_tx_disable(struct sspa_priv *sspa)
56 {
57 	unsigned int sspa_sp = sspa->sp;
58 
59 	sspa_sp &= ~SSPA_SP_MSL;
60 	sspa_sp &= ~SSPA_SP_S_EN;
61 	sspa_sp |= SSPA_SP_WEN;
62 	__raw_writel(sspa_sp, sspa->tx_base + SSPA_SP);
63 }
64 
mmp_sspa_rx_enable(struct sspa_priv * sspa)65 static void mmp_sspa_rx_enable(struct sspa_priv *sspa)
66 {
67 	unsigned int sspa_sp = sspa->sp;
68 
69 	sspa_sp |= SSPA_SP_S_EN;
70 	sspa_sp |= SSPA_SP_WEN;
71 	__raw_writel(sspa_sp, sspa->rx_base + SSPA_SP);
72 }
73 
mmp_sspa_rx_disable(struct sspa_priv * sspa)74 static void mmp_sspa_rx_disable(struct sspa_priv *sspa)
75 {
76 	unsigned int sspa_sp = sspa->sp;
77 
78 	sspa_sp &= ~SSPA_SP_S_EN;
79 	sspa_sp |= SSPA_SP_WEN;
80 	__raw_writel(sspa_sp, sspa->rx_base + SSPA_SP);
81 }
82 
mmp_sspa_startup(struct snd_pcm_substream * substream,struct snd_soc_dai * dai)83 static int mmp_sspa_startup(struct snd_pcm_substream *substream,
84 	struct snd_soc_dai *dai)
85 {
86 	struct sspa_priv *sspa = snd_soc_dai_get_drvdata(dai);
87 
88 	clk_prepare_enable(sspa->sysclk);
89 	clk_prepare_enable(sspa->clk);
90 
91 	return 0;
92 }
93 
mmp_sspa_shutdown(struct snd_pcm_substream * substream,struct snd_soc_dai * dai)94 static void mmp_sspa_shutdown(struct snd_pcm_substream *substream,
95 	struct snd_soc_dai *dai)
96 {
97 	struct sspa_priv *sspa = snd_soc_dai_get_drvdata(dai);
98 
99 	clk_disable_unprepare(sspa->clk);
100 	clk_disable_unprepare(sspa->sysclk);
101 }
102 
103 /*
104  * Set the SSP ports SYSCLK.
105  */
mmp_sspa_set_dai_sysclk(struct snd_soc_dai * cpu_dai,int clk_id,unsigned int freq,int dir)106 static int mmp_sspa_set_dai_sysclk(struct snd_soc_dai *cpu_dai,
107 				    int clk_id, unsigned int freq, int dir)
108 {
109 	struct sspa_priv *sspa = snd_soc_dai_get_drvdata(cpu_dai);
110 	struct device *dev = cpu_dai->component->dev;
111 	int ret = 0;
112 
113 	if (dev->of_node)
114 		return -ENOTSUPP;
115 
116 	switch (clk_id) {
117 	case MMP_SSPA_CLK_AUDIO:
118 		ret = clk_set_rate(sspa->audio_clk, freq);
119 		if (ret)
120 			return ret;
121 		break;
122 	case MMP_SSPA_CLK_PLL:
123 	case MMP_SSPA_CLK_VCXO:
124 		/* not support yet */
125 		return -EINVAL;
126 	default:
127 		return -EINVAL;
128 	}
129 
130 	return 0;
131 }
132 
mmp_sspa_set_dai_pll(struct snd_soc_dai * cpu_dai,int pll_id,int source,unsigned int freq_in,unsigned int freq_out)133 static int mmp_sspa_set_dai_pll(struct snd_soc_dai *cpu_dai, int pll_id,
134 				 int source, unsigned int freq_in,
135 				 unsigned int freq_out)
136 {
137 	struct sspa_priv *sspa = snd_soc_dai_get_drvdata(cpu_dai);
138 	struct device *dev = cpu_dai->component->dev;
139 	int ret = 0;
140 
141 	if (dev->of_node)
142 		return -ENOTSUPP;
143 
144 	switch (pll_id) {
145 	case MMP_SYSCLK:
146 		ret = clk_set_rate(sspa->sysclk, freq_out);
147 		if (ret)
148 			return ret;
149 		break;
150 	case MMP_SSPA_CLK:
151 		ret = clk_set_rate(sspa->clk, freq_out);
152 		if (ret)
153 			return ret;
154 		break;
155 	default:
156 		return -ENODEV;
157 	}
158 
159 	return 0;
160 }
161 
162 /*
163  * Set up the sspa dai format.
164  */
mmp_sspa_set_dai_fmt(struct snd_soc_dai * cpu_dai,unsigned int fmt)165 static int mmp_sspa_set_dai_fmt(struct snd_soc_dai *cpu_dai,
166 				 unsigned int fmt)
167 {
168 	struct sspa_priv *sspa = snd_soc_dai_get_drvdata(cpu_dai);
169 
170 	/* reset port settings */
171 	sspa->sp   = SSPA_SP_WEN | SSPA_SP_S_RST | SSPA_SP_FFLUSH;
172 	sspa->ctrl = 0;
173 
174 	switch (fmt & SND_SOC_DAIFMT_CLOCK_PROVIDER_MASK) {
175 	case SND_SOC_DAIFMT_BP_FP:
176 		sspa->sp |= SSPA_SP_MSL;
177 		break;
178 	case SND_SOC_DAIFMT_BC_FC:
179 		break;
180 	default:
181 		return -EINVAL;
182 	}
183 
184 	switch (fmt & SND_SOC_DAIFMT_INV_MASK) {
185 	case SND_SOC_DAIFMT_NB_NF:
186 		sspa->sp |= SSPA_SP_FSP;
187 		break;
188 	default:
189 		return -EINVAL;
190 	}
191 
192 	switch (fmt & SND_SOC_DAIFMT_FORMAT_MASK) {
193 	case SND_SOC_DAIFMT_I2S:
194 		sspa->ctrl |= SSPA_CTL_XDATDLY(1);
195 		break;
196 	default:
197 		return -EINVAL;
198 	}
199 
200 	/* Since we are configuring the timings for the format by hand
201 	 * we have to defer some things until hw_params() where we
202 	 * know parameters like the sample size.
203 	 */
204 	return 0;
205 }
206 
207 /*
208  * Set the SSPA audio DMA parameters and sample size.
209  * Can be called multiple times by oss emulation.
210  */
mmp_sspa_hw_params(struct snd_pcm_substream * substream,struct snd_pcm_hw_params * params,struct snd_soc_dai * dai)211 static int mmp_sspa_hw_params(struct snd_pcm_substream *substream,
212 			       struct snd_pcm_hw_params *params,
213 			       struct snd_soc_dai *dai)
214 {
215 	struct sspa_priv *sspa = snd_soc_dai_get_drvdata(dai);
216 	struct device *dev = dai->component->dev;
217 	u32 sspa_ctrl = sspa->ctrl;
218 	int bits;
219 	int bitval;
220 
221 	switch (params_format(params)) {
222 	case SNDRV_PCM_FORMAT_S8:
223 		bits = 8;
224 		bitval = SSPA_CTL_8_BITS;
225 		break;
226 	case SNDRV_PCM_FORMAT_S16_LE:
227 		bits = 16;
228 		bitval = SSPA_CTL_16_BITS;
229 		break;
230 	case SNDRV_PCM_FORMAT_S24_3LE:
231 		bits = 24;
232 		bitval = SSPA_CTL_24_BITS;
233 		break;
234 	case SNDRV_PCM_FORMAT_S32_LE:
235 		bits = 32;
236 		bitval = SSPA_CTL_32_BITS;
237 		break;
238 	default:
239 		return -EINVAL;
240 	}
241 
242 	sspa_ctrl &= ~SSPA_CTL_XPH;
243 	if (dev->of_node || params_channels(params) == 2)
244 		sspa_ctrl |= SSPA_CTL_XPH;
245 
246 	sspa_ctrl &= ~SSPA_CTL_XWDLEN1_MASK;
247 	sspa_ctrl |= SSPA_CTL_XWDLEN1(bitval);
248 
249 	sspa_ctrl &= ~SSPA_CTL_XWDLEN2_MASK;
250 	sspa_ctrl |= SSPA_CTL_XWDLEN2(bitval);
251 
252 	sspa_ctrl &= ~SSPA_CTL_XSSZ1_MASK;
253 	sspa_ctrl |= SSPA_CTL_XSSZ1(bitval);
254 
255 	sspa_ctrl &= ~SSPA_CTL_XSSZ2_MASK;
256 	sspa_ctrl |= SSPA_CTL_XSSZ2(bitval);
257 
258 	sspa->sp &= ~SSPA_SP_FWID_MASK;
259 	sspa->sp |= SSPA_SP_FWID(bits - 1);
260 
261 	sspa->sp &= ~SSPA_TXSP_FPER_MASK;
262 	sspa->sp |= SSPA_TXSP_FPER(bits * 2 - 1);
263 
264 	if (dev->of_node) {
265 		clk_set_rate(sspa->clk, params_rate(params) *
266 					params_channels(params) * bits);
267 	}
268 
269 	if (substream->stream == SNDRV_PCM_STREAM_PLAYBACK) {
270 		__raw_writel(sspa_ctrl, sspa->tx_base + SSPA_CTL);
271 		__raw_writel(0x1, sspa->tx_base + SSPA_FIFO_UL);
272 	} else {
273 		__raw_writel(sspa_ctrl, sspa->rx_base + SSPA_CTL);
274 		__raw_writel(0x0, sspa->rx_base + SSPA_FIFO_UL);
275 	}
276 
277 	return 0;
278 }
279 
mmp_sspa_trigger(struct snd_pcm_substream * substream,int cmd,struct snd_soc_dai * dai)280 static int mmp_sspa_trigger(struct snd_pcm_substream *substream, int cmd,
281 			     struct snd_soc_dai *dai)
282 {
283 	struct sspa_priv *sspa = snd_soc_dai_get_drvdata(dai);
284 	int ret = 0;
285 
286 	switch (cmd) {
287 	case SNDRV_PCM_TRIGGER_START:
288 	case SNDRV_PCM_TRIGGER_RESUME:
289 	case SNDRV_PCM_TRIGGER_PAUSE_RELEASE:
290 		/*
291 		 * whatever playback or capture, must enable rx.
292 		 * this is a hw issue, so need check if rx has been
293 		 * enabled or not; if has been enabled by another
294 		 * stream, do not enable again.
295 		 */
296 		if (!sspa->running_cnt)
297 			mmp_sspa_rx_enable(sspa);
298 
299 		if (substream->stream == SNDRV_PCM_STREAM_PLAYBACK)
300 			mmp_sspa_tx_enable(sspa);
301 
302 		sspa->running_cnt++;
303 		break;
304 
305 	case SNDRV_PCM_TRIGGER_STOP:
306 	case SNDRV_PCM_TRIGGER_SUSPEND:
307 	case SNDRV_PCM_TRIGGER_PAUSE_PUSH:
308 		sspa->running_cnt--;
309 
310 		if (substream->stream == SNDRV_PCM_STREAM_PLAYBACK)
311 			mmp_sspa_tx_disable(sspa);
312 
313 		/* have no capture stream, disable rx port */
314 		if (!sspa->running_cnt)
315 			mmp_sspa_rx_disable(sspa);
316 		break;
317 
318 	default:
319 		ret = -EINVAL;
320 	}
321 
322 	return ret;
323 }
324 
mmp_sspa_probe(struct snd_soc_dai * dai)325 static int mmp_sspa_probe(struct snd_soc_dai *dai)
326 {
327 	struct sspa_priv *sspa = dev_get_drvdata(dai->dev);
328 
329 	snd_soc_dai_init_dma_data(dai,
330 				&sspa->playback_dma_data,
331 				&sspa->capture_dma_data);
332 
333 	return 0;
334 }
335 
336 #define MMP_SSPA_RATES SNDRV_PCM_RATE_8000_192000
337 #define MMP_SSPA_FORMATS (SNDRV_PCM_FMTBIT_S8 | \
338 		SNDRV_PCM_FMTBIT_S16_LE | \
339 		SNDRV_PCM_FMTBIT_S24_3LE | \
340 		SNDRV_PCM_FMTBIT_S32_LE)
341 
342 static const struct snd_soc_dai_ops mmp_sspa_dai_ops = {
343 	.probe		= mmp_sspa_probe,
344 	.startup	= mmp_sspa_startup,
345 	.shutdown	= mmp_sspa_shutdown,
346 	.trigger	= mmp_sspa_trigger,
347 	.hw_params	= mmp_sspa_hw_params,
348 	.set_sysclk	= mmp_sspa_set_dai_sysclk,
349 	.set_pll	= mmp_sspa_set_dai_pll,
350 	.set_fmt	= mmp_sspa_set_dai_fmt,
351 };
352 
353 static struct snd_soc_dai_driver mmp_sspa_dai = {
354 	.playback = {
355 		.channels_min = 1,
356 		.channels_max = 128,
357 		.rates = MMP_SSPA_RATES,
358 		.formats = MMP_SSPA_FORMATS,
359 	},
360 	.capture = {
361 		.channels_min = 1,
362 		.channels_max = 2,
363 		.rates = MMP_SSPA_RATES,
364 		.formats = MMP_SSPA_FORMATS,
365 	},
366 	.ops = &mmp_sspa_dai_ops,
367 };
368 
369 #define MMP_PCM_INFO (SNDRV_PCM_INFO_MMAP |	\
370 		SNDRV_PCM_INFO_MMAP_VALID |	\
371 		SNDRV_PCM_INFO_INTERLEAVED |	\
372 		SNDRV_PCM_INFO_PAUSE |		\
373 		SNDRV_PCM_INFO_RESUME |		\
374 		SNDRV_PCM_INFO_NO_PERIOD_WAKEUP)
375 
376 static const struct snd_pcm_hardware mmp_pcm_hardware[] = {
377 	{
378 		.info			= MMP_PCM_INFO,
379 		.period_bytes_min	= 1024,
380 		.period_bytes_max	= 2048,
381 		.periods_min		= 2,
382 		.periods_max		= 32,
383 		.buffer_bytes_max	= 4096,
384 		.fifo_size		= 32,
385 	},
386 	{
387 		.info			= MMP_PCM_INFO,
388 		.period_bytes_min	= 1024,
389 		.period_bytes_max	= 2048,
390 		.periods_min		= 2,
391 		.periods_max		= 32,
392 		.buffer_bytes_max	= 4096,
393 		.fifo_size		= 32,
394 	},
395 };
396 
397 static const struct snd_dmaengine_pcm_config mmp_pcm_config = {
398 	.prepare_slave_config = snd_dmaengine_pcm_prepare_slave_config,
399 	.pcm_hardware = mmp_pcm_hardware,
400 	.prealloc_buffer_size = 4096,
401 };
402 
mmp_pcm_mmap(struct snd_soc_component * component,struct snd_pcm_substream * substream,struct vm_area_struct * vma)403 static int mmp_pcm_mmap(struct snd_soc_component *component,
404 			struct snd_pcm_substream *substream,
405 			struct vm_area_struct *vma)
406 {
407 	vm_flags_set(vma, VM_DONTEXPAND | VM_DONTDUMP);
408 	vma->vm_page_prot = pgprot_noncached(vma->vm_page_prot);
409 	return remap_pfn_range(vma, vma->vm_start,
410 		substream->dma_buffer.addr >> PAGE_SHIFT,
411 		vma->vm_end - vma->vm_start, vma->vm_page_prot);
412 }
413 
mmp_sspa_open(struct snd_soc_component * component,struct snd_pcm_substream * substream)414 static int mmp_sspa_open(struct snd_soc_component *component,
415 			 struct snd_pcm_substream *substream)
416 {
417 	struct sspa_priv *sspa = snd_soc_component_get_drvdata(component);
418 
419 	pm_runtime_get_sync(component->dev);
420 
421 	/* we can only change the settings if the port is not in use */
422 	if ((__raw_readl(sspa->tx_base + SSPA_SP) & SSPA_SP_S_EN) ||
423 	    (__raw_readl(sspa->rx_base + SSPA_SP) & SSPA_SP_S_EN)) {
424 		dev_err(component->dev,
425 			"can't change hardware dai format: stream is in use\n");
426 		return -EBUSY;
427 	}
428 
429 	__raw_writel(sspa->sp, sspa->tx_base + SSPA_SP);
430 	__raw_writel(sspa->sp, sspa->rx_base + SSPA_SP);
431 
432 	sspa->sp &= ~(SSPA_SP_S_RST | SSPA_SP_FFLUSH);
433 	__raw_writel(sspa->sp, sspa->tx_base + SSPA_SP);
434 	__raw_writel(sspa->sp, sspa->rx_base + SSPA_SP);
435 
436 	/*
437 	 * FIXME: hw issue, for the tx serial port,
438 	 * can not config the master/slave mode;
439 	 * so must clean this bit.
440 	 * The master/slave mode has been set in the
441 	 * rx port.
442 	 */
443 	__raw_writel(sspa->sp & ~SSPA_SP_MSL, sspa->tx_base + SSPA_SP);
444 
445 	__raw_writel(sspa->ctrl, sspa->tx_base + SSPA_CTL);
446 	__raw_writel(sspa->ctrl, sspa->rx_base + SSPA_CTL);
447 
448 	return 0;
449 }
450 
mmp_sspa_close(struct snd_soc_component * component,struct snd_pcm_substream * substream)451 static int mmp_sspa_close(struct snd_soc_component *component,
452 			  struct snd_pcm_substream *substream)
453 {
454 	pm_runtime_put_sync(component->dev);
455 	return 0;
456 }
457 
458 static const struct snd_soc_component_driver mmp_sspa_component = {
459 	.name			= "mmp-sspa",
460 	.mmap			= mmp_pcm_mmap,
461 	.open			= mmp_sspa_open,
462 	.close			= mmp_sspa_close,
463 	.legacy_dai_naming	= 1,
464 };
465 
asoc_mmp_sspa_probe(struct platform_device * pdev)466 static int asoc_mmp_sspa_probe(struct platform_device *pdev)
467 {
468 	struct sspa_priv *sspa;
469 	int ret;
470 
471 	sspa = devm_kzalloc(&pdev->dev,
472 				sizeof(struct sspa_priv), GFP_KERNEL);
473 	if (!sspa)
474 		return -ENOMEM;
475 
476 	if (pdev->dev.of_node) {
477 		sspa->rx_base = devm_platform_ioremap_resource(pdev, 0);
478 		if (IS_ERR(sspa->rx_base))
479 			return PTR_ERR(sspa->rx_base);
480 
481 		sspa->tx_base = devm_platform_ioremap_resource(pdev, 1);
482 		if (IS_ERR(sspa->tx_base))
483 			return PTR_ERR(sspa->tx_base);
484 
485 		sspa->clk = devm_clk_get(&pdev->dev, "bitclk");
486 		if (IS_ERR(sspa->clk))
487 			return PTR_ERR(sspa->clk);
488 
489 		sspa->audio_clk = devm_clk_get(&pdev->dev, "audio");
490 		if (IS_ERR(sspa->audio_clk))
491 			return PTR_ERR(sspa->audio_clk);
492 	} else {
493 		struct resource *res;
494 
495 		res = platform_get_resource(pdev, IORESOURCE_IO, 0);
496 		if (res == NULL)
497 			return -ENODEV;
498 
499 		sspa->rx_base = devm_ioremap(&pdev->dev, res->start, 0x30);
500 		if (!sspa->rx_base)
501 			return -ENOMEM;
502 
503 		sspa->tx_base = devm_ioremap(&pdev->dev,
504 					     res->start + 0x80, 0x30);
505 		if (!sspa->tx_base)
506 			return -ENOMEM;
507 
508 		sspa->clk = devm_clk_get(&pdev->dev, NULL);
509 		if (IS_ERR(sspa->clk))
510 			return PTR_ERR(sspa->clk);
511 
512 		sspa->audio_clk = clk_get(NULL, "mmp-audio");
513 		if (IS_ERR(sspa->audio_clk))
514 			return PTR_ERR(sspa->audio_clk);
515 
516 		sspa->sysclk = clk_get(NULL, "mmp-sysclk");
517 		if (IS_ERR(sspa->sysclk)) {
518 			clk_put(sspa->audio_clk);
519 			return PTR_ERR(sspa->sysclk);
520 		}
521 	}
522 	platform_set_drvdata(pdev, sspa);
523 
524 	sspa->playback_dma_data.maxburst = 4;
525 	sspa->capture_dma_data.maxburst = 4;
526 	/* You know, these addresses are actually ignored. */
527 	sspa->capture_dma_data.addr = SSPA_D;
528 	sspa->playback_dma_data.addr = 0x80 + SSPA_D;
529 
530 	if (pdev->dev.of_node) {
531 		ret = devm_snd_dmaengine_pcm_register(&pdev->dev,
532 						      &mmp_pcm_config, 0);
533 		if (ret)
534 			return ret;
535 	}
536 
537 	ret = devm_snd_soc_register_component(&pdev->dev, &mmp_sspa_component,
538 					      &mmp_sspa_dai, 1);
539 	if (ret)
540 		return ret;
541 
542 	pm_runtime_enable(&pdev->dev);
543 	clk_prepare_enable(sspa->audio_clk);
544 
545 	return 0;
546 }
547 
asoc_mmp_sspa_remove(struct platform_device * pdev)548 static void asoc_mmp_sspa_remove(struct platform_device *pdev)
549 {
550 	struct sspa_priv *sspa = platform_get_drvdata(pdev);
551 
552 	clk_disable_unprepare(sspa->audio_clk);
553 	pm_runtime_disable(&pdev->dev);
554 
555 	if (pdev->dev.of_node)
556 		return;
557 
558 	clk_put(sspa->audio_clk);
559 	clk_put(sspa->sysclk);
560 }
561 
562 #ifdef CONFIG_OF
563 static const struct of_device_id mmp_sspa_of_match[] = {
564 	{ .compatible = "marvell,mmp-sspa" },
565 	{},
566 };
567 
568 MODULE_DEVICE_TABLE(of, mmp_sspa_of_match);
569 #endif
570 
571 static struct platform_driver asoc_mmp_sspa_driver = {
572 	.driver = {
573 		.name = "mmp-sspa-dai",
574 		.of_match_table = of_match_ptr(mmp_sspa_of_match),
575 	},
576 	.probe = asoc_mmp_sspa_probe,
577 	.remove_new = asoc_mmp_sspa_remove,
578 };
579 
580 module_platform_driver(asoc_mmp_sspa_driver);
581 
582 MODULE_AUTHOR("Leo Yan <leoy@marvell.com>");
583 MODULE_DESCRIPTION("MMP SSPA SoC Interface");
584 MODULE_LICENSE("GPL");
585 MODULE_ALIAS("platform:mmp-sspa-dai");
586