ohci-pxa27x.c revision b8ad5c370640886792487be7835810f204388c95
1/*
2 * OHCI HCD (Host Controller Driver) for USB.
3 *
4 * (C) Copyright 1999 Roman Weissgaerber <weissg@vienna.at>
5 * (C) Copyright 2000-2002 David Brownell <dbrownell@users.sourceforge.net>
6 * (C) Copyright 2002 Hewlett-Packard Company
7 *
8 * Bus Glue for pxa27x
9 *
10 * Written by Christopher Hoover <ch@hpl.hp.com>
11 * Based on fragments of previous driver by Russell King et al.
12 *
13 * Modified for LH7A404 from ohci-sa1111.c
14 *  by Durgesh Pattamatta <pattamattad@sharpsec.com>
15 *
16 * Modified for pxa27x from ohci-lh7a404.c
17 *  by Nick Bane <nick@cecomputing.co.uk> 26-8-2004
18 *
19 * This file is licenced under the GPL.
20 */
21
22#include <linux/clk.h>
23#include <linux/device.h>
24#include <linux/io.h>
25#include <linux/kernel.h>
26#include <linux/module.h>
27#include <linux/of_platform.h>
28#include <linux/of_gpio.h>
29#include <linux/platform_data/usb-ohci-pxa27x.h>
30#include <linux/platform_data/usb-pxa3xx-ulpi.h>
31#include <linux/platform_device.h>
32#include <linux/signal.h>
33#include <linux/usb.h>
34#include <linux/usb/hcd.h>
35#include <linux/usb/otg.h>
36
37#include <mach/hardware.h>
38
39#include "ohci.h"
40
41#define DRIVER_DESC "OHCI PXA27x/PXA3x driver"
42
43/*
44 * UHC: USB Host Controller (OHCI-like) register definitions
45 */
46#define UHCREV		(0x0000) /* UHC HCI Spec Revision */
47#define UHCHCON		(0x0004) /* UHC Host Control Register */
48#define UHCCOMS		(0x0008) /* UHC Command Status Register */
49#define UHCINTS		(0x000C) /* UHC Interrupt Status Register */
50#define UHCINTE		(0x0010) /* UHC Interrupt Enable */
51#define UHCINTD		(0x0014) /* UHC Interrupt Disable */
52#define UHCHCCA		(0x0018) /* UHC Host Controller Comm. Area */
53#define UHCPCED		(0x001C) /* UHC Period Current Endpt Descr */
54#define UHCCHED		(0x0020) /* UHC Control Head Endpt Descr */
55#define UHCCCED		(0x0024) /* UHC Control Current Endpt Descr */
56#define UHCBHED		(0x0028) /* UHC Bulk Head Endpt Descr */
57#define UHCBCED		(0x002C) /* UHC Bulk Current Endpt Descr */
58#define UHCDHEAD	(0x0030) /* UHC Done Head */
59#define UHCFMI		(0x0034) /* UHC Frame Interval */
60#define UHCFMR		(0x0038) /* UHC Frame Remaining */
61#define UHCFMN		(0x003C) /* UHC Frame Number */
62#define UHCPERS		(0x0040) /* UHC Periodic Start */
63#define UHCLS		(0x0044) /* UHC Low Speed Threshold */
64
65#define UHCRHDA		(0x0048) /* UHC Root Hub Descriptor A */
66#define UHCRHDA_NOCP	(1 << 12)	/* No over current protection */
67#define UHCRHDA_OCPM	(1 << 11)	/* Over Current Protection Mode */
68#define UHCRHDA_POTPGT(x) \
69			(((x) & 0xff) << 24) /* Power On To Power Good Time */
70
71#define UHCRHDB		(0x004C) /* UHC Root Hub Descriptor B */
72#define UHCRHS		(0x0050) /* UHC Root Hub Status */
73#define UHCRHPS1	(0x0054) /* UHC Root Hub Port 1 Status */
74#define UHCRHPS2	(0x0058) /* UHC Root Hub Port 2 Status */
75#define UHCRHPS3	(0x005C) /* UHC Root Hub Port 3 Status */
76
77#define UHCSTAT		(0x0060) /* UHC Status Register */
78#define UHCSTAT_UPS3	(1 << 16)	/* USB Power Sense Port3 */
79#define UHCSTAT_SBMAI	(1 << 15)	/* System Bus Master Abort Interrupt*/
80#define UHCSTAT_SBTAI	(1 << 14)	/* System Bus Target Abort Interrupt*/
81#define UHCSTAT_UPRI	(1 << 13)	/* USB Port Resume Interrupt */
82#define UHCSTAT_UPS2	(1 << 12)	/* USB Power Sense Port 2 */
83#define UHCSTAT_UPS1	(1 << 11)	/* USB Power Sense Port 1 */
84#define UHCSTAT_HTA	(1 << 10)	/* HCI Target Abort */
85#define UHCSTAT_HBA	(1 << 8)	/* HCI Buffer Active */
86#define UHCSTAT_RWUE	(1 << 7)	/* HCI Remote Wake Up Event */
87
88#define UHCHR           (0x0064) /* UHC Reset Register */
89#define UHCHR_SSEP3	(1 << 11)	/* Sleep Standby Enable for Port3 */
90#define UHCHR_SSEP2	(1 << 10)	/* Sleep Standby Enable for Port2 */
91#define UHCHR_SSEP1	(1 << 9)	/* Sleep Standby Enable for Port1 */
92#define UHCHR_PCPL	(1 << 7)	/* Power control polarity low */
93#define UHCHR_PSPL	(1 << 6)	/* Power sense polarity low */
94#define UHCHR_SSE	(1 << 5)	/* Sleep Standby Enable */
95#define UHCHR_UIT	(1 << 4)	/* USB Interrupt Test */
96#define UHCHR_SSDC	(1 << 3)	/* Simulation Scale Down Clock */
97#define UHCHR_CGR	(1 << 2)	/* Clock Generation Reset */
98#define UHCHR_FHR	(1 << 1)	/* Force Host Controller Reset */
99#define UHCHR_FSBIR	(1 << 0)	/* Force System Bus Iface Reset */
100
101#define UHCHIE          (0x0068) /* UHC Interrupt Enable Register*/
102#define UHCHIE_UPS3IE	(1 << 14)	/* Power Sense Port3 IntEn */
103#define UHCHIE_UPRIE	(1 << 13)	/* Port Resume IntEn */
104#define UHCHIE_UPS2IE	(1 << 12)	/* Power Sense Port2 IntEn */
105#define UHCHIE_UPS1IE	(1 << 11)	/* Power Sense Port1 IntEn */
106#define UHCHIE_TAIE	(1 << 10)	/* HCI Interface Transfer Abort
107					   Interrupt Enable*/
108#define UHCHIE_HBAIE	(1 << 8)	/* HCI Buffer Active IntEn */
109#define UHCHIE_RWIE	(1 << 7)	/* Remote Wake-up IntEn */
110
111#define UHCHIT          (0x006C) /* UHC Interrupt Test register */
112
113#define PXA_UHC_MAX_PORTNUM    3
114
115static const char hcd_name[] = "ohci-pxa27x";
116
117static struct hc_driver __read_mostly ohci_pxa27x_hc_driver;
118
119struct pxa27x_ohci {
120	struct clk	*clk;
121	void __iomem	*mmio_base;
122};
123
124#define to_pxa27x_ohci(hcd)	(struct pxa27x_ohci *)(hcd_to_ohci(hcd)->priv)
125
126/*
127  PMM_NPS_MODE -- PMM Non-power switching mode
128      Ports are powered continuously.
129
130  PMM_GLOBAL_MODE -- PMM global switching mode
131      All ports are powered at the same time.
132
133  PMM_PERPORT_MODE -- PMM per port switching mode
134      Ports are powered individually.
135 */
136static int pxa27x_ohci_select_pmm(struct pxa27x_ohci *pxa_ohci, int mode)
137{
138	uint32_t uhcrhda = __raw_readl(pxa_ohci->mmio_base + UHCRHDA);
139	uint32_t uhcrhdb = __raw_readl(pxa_ohci->mmio_base + UHCRHDB);
140
141	switch (mode) {
142	case PMM_NPS_MODE:
143		uhcrhda |= RH_A_NPS;
144		break;
145	case PMM_GLOBAL_MODE:
146		uhcrhda &= ~(RH_A_NPS & RH_A_PSM);
147		break;
148	case PMM_PERPORT_MODE:
149		uhcrhda &= ~(RH_A_NPS);
150		uhcrhda |= RH_A_PSM;
151
152		/* Set port power control mask bits, only 3 ports. */
153		uhcrhdb |= (0x7<<17);
154		break;
155	default:
156		printk( KERN_ERR
157			"Invalid mode %d, set to non-power switch mode.\n",
158			mode );
159
160		uhcrhda |= RH_A_NPS;
161	}
162
163	__raw_writel(uhcrhda, pxa_ohci->mmio_base + UHCRHDA);
164	__raw_writel(uhcrhdb, pxa_ohci->mmio_base + UHCRHDB);
165	return 0;
166}
167
168/*-------------------------------------------------------------------------*/
169
170static inline void pxa27x_setup_hc(struct pxa27x_ohci *pxa_ohci,
171				   struct pxaohci_platform_data *inf)
172{
173	uint32_t uhchr = __raw_readl(pxa_ohci->mmio_base + UHCHR);
174	uint32_t uhcrhda = __raw_readl(pxa_ohci->mmio_base + UHCRHDA);
175
176	if (inf->flags & ENABLE_PORT1)
177		uhchr &= ~UHCHR_SSEP1;
178
179	if (inf->flags & ENABLE_PORT2)
180		uhchr &= ~UHCHR_SSEP2;
181
182	if (inf->flags & ENABLE_PORT3)
183		uhchr &= ~UHCHR_SSEP3;
184
185	if (inf->flags & POWER_CONTROL_LOW)
186		uhchr |= UHCHR_PCPL;
187
188	if (inf->flags & POWER_SENSE_LOW)
189		uhchr |= UHCHR_PSPL;
190
191	if (inf->flags & NO_OC_PROTECTION)
192		uhcrhda |= UHCRHDA_NOCP;
193	else
194		uhcrhda &= ~UHCRHDA_NOCP;
195
196	if (inf->flags & OC_MODE_PERPORT)
197		uhcrhda |= UHCRHDA_OCPM;
198	else
199		uhcrhda &= ~UHCRHDA_OCPM;
200
201	if (inf->power_on_delay) {
202		uhcrhda &= ~UHCRHDA_POTPGT(0xff);
203		uhcrhda |= UHCRHDA_POTPGT(inf->power_on_delay / 2);
204	}
205
206	__raw_writel(uhchr, pxa_ohci->mmio_base + UHCHR);
207	__raw_writel(uhcrhda, pxa_ohci->mmio_base + UHCRHDA);
208}
209
210static inline void pxa27x_reset_hc(struct pxa27x_ohci *pxa_ohci)
211{
212	uint32_t uhchr = __raw_readl(pxa_ohci->mmio_base + UHCHR);
213
214	__raw_writel(uhchr | UHCHR_FHR, pxa_ohci->mmio_base + UHCHR);
215	udelay(11);
216	__raw_writel(uhchr & ~UHCHR_FHR, pxa_ohci->mmio_base + UHCHR);
217}
218
219#ifdef CONFIG_PXA27x
220extern void pxa27x_clear_otgph(void);
221#else
222#define pxa27x_clear_otgph()	do {} while (0)
223#endif
224
225static int pxa27x_start_hc(struct pxa27x_ohci *pxa_ohci, struct device *dev)
226{
227	int retval = 0;
228	struct pxaohci_platform_data *inf;
229	uint32_t uhchr;
230	struct usb_hcd *hcd = dev_get_drvdata(dev);
231
232	inf = dev_get_platdata(dev);
233
234	clk_prepare_enable(pxa_ohci->clk);
235
236	pxa27x_reset_hc(pxa_ohci);
237
238	uhchr = __raw_readl(pxa_ohci->mmio_base + UHCHR) | UHCHR_FSBIR;
239	__raw_writel(uhchr, pxa_ohci->mmio_base + UHCHR);
240
241	while (__raw_readl(pxa_ohci->mmio_base + UHCHR) & UHCHR_FSBIR)
242		cpu_relax();
243
244	pxa27x_setup_hc(pxa_ohci, inf);
245
246	if (inf->init)
247		retval = inf->init(dev);
248
249	if (retval < 0)
250		return retval;
251
252	if (cpu_is_pxa3xx())
253		pxa3xx_u2d_start_hc(&hcd->self);
254
255	uhchr = __raw_readl(pxa_ohci->mmio_base + UHCHR) & ~UHCHR_SSE;
256	__raw_writel(uhchr, pxa_ohci->mmio_base + UHCHR);
257	__raw_writel(UHCHIE_UPRIE | UHCHIE_RWIE, pxa_ohci->mmio_base + UHCHIE);
258
259	/* Clear any OTG Pin Hold */
260	pxa27x_clear_otgph();
261	return 0;
262}
263
264static void pxa27x_stop_hc(struct pxa27x_ohci *pxa_ohci, struct device *dev)
265{
266	struct pxaohci_platform_data *inf;
267	struct usb_hcd *hcd = dev_get_drvdata(dev);
268	uint32_t uhccoms;
269
270	inf = dev_get_platdata(dev);
271
272	if (cpu_is_pxa3xx())
273		pxa3xx_u2d_stop_hc(&hcd->self);
274
275	if (inf->exit)
276		inf->exit(dev);
277
278	pxa27x_reset_hc(pxa_ohci);
279
280	/* Host Controller Reset */
281	uhccoms = __raw_readl(pxa_ohci->mmio_base + UHCCOMS) | 0x01;
282	__raw_writel(uhccoms, pxa_ohci->mmio_base + UHCCOMS);
283	udelay(10);
284
285	clk_disable_unprepare(pxa_ohci->clk);
286}
287
288#ifdef CONFIG_OF
289static const struct of_device_id pxa_ohci_dt_ids[] = {
290	{ .compatible = "marvell,pxa-ohci" },
291	{ }
292};
293
294MODULE_DEVICE_TABLE(of, pxa_ohci_dt_ids);
295
296static int ohci_pxa_of_init(struct platform_device *pdev)
297{
298	struct device_node *np = pdev->dev.of_node;
299	struct pxaohci_platform_data *pdata;
300	u32 tmp;
301
302	if (!np)
303		return 0;
304
305	/* Right now device-tree probed devices don't get dma_mask set.
306	 * Since shared usb code relies on it, set it here for now.
307	 * Once we have dma capability bindings this can go away.
308	 */
309	if (!pdev->dev.dma_mask)
310		pdev->dev.dma_mask = &pdev->dev.coherent_dma_mask;
311	if (!pdev->dev.coherent_dma_mask)
312		pdev->dev.coherent_dma_mask = DMA_BIT_MASK(32);
313
314	pdata = devm_kzalloc(&pdev->dev, sizeof(*pdata), GFP_KERNEL);
315	if (!pdata)
316		return -ENOMEM;
317
318	if (of_get_property(np, "marvell,enable-port1", NULL))
319		pdata->flags |= ENABLE_PORT1;
320	if (of_get_property(np, "marvell,enable-port2", NULL))
321		pdata->flags |= ENABLE_PORT2;
322	if (of_get_property(np, "marvell,enable-port3", NULL))
323		pdata->flags |= ENABLE_PORT3;
324	if (of_get_property(np, "marvell,port-sense-low", NULL))
325		pdata->flags |= POWER_SENSE_LOW;
326	if (of_get_property(np, "marvell,power-control-low", NULL))
327		pdata->flags |= POWER_CONTROL_LOW;
328	if (of_get_property(np, "marvell,no-oc-protection", NULL))
329		pdata->flags |= NO_OC_PROTECTION;
330	if (of_get_property(np, "marvell,oc-mode-perport", NULL))
331		pdata->flags |= OC_MODE_PERPORT;
332	if (!of_property_read_u32(np, "marvell,power-on-delay", &tmp))
333		pdata->power_on_delay = tmp;
334	if (!of_property_read_u32(np, "marvell,port-mode", &tmp))
335		pdata->port_mode = tmp;
336	if (!of_property_read_u32(np, "marvell,power-budget", &tmp))
337		pdata->power_budget = tmp;
338
339	pdev->dev.platform_data = pdata;
340
341	return 0;
342}
343#else
344static int ohci_pxa_of_init(struct platform_device *pdev)
345{
346	return 0;
347}
348#endif
349
350/*-------------------------------------------------------------------------*/
351
352/* configure so an HC device and id are always provided */
353/* always called with process context; sleeping is OK */
354
355
356/**
357 * usb_hcd_pxa27x_probe - initialize pxa27x-based HCDs
358 * Context: !in_interrupt()
359 *
360 * Allocates basic resources for this USB host controller, and
361 * then invokes the start() method for the HCD associated with it
362 * through the hotplug entry's driver_data.
363 *
364 */
365int usb_hcd_pxa27x_probe (const struct hc_driver *driver, struct platform_device *pdev)
366{
367	int retval, irq;
368	struct usb_hcd *hcd;
369	struct pxaohci_platform_data *inf;
370	struct pxa27x_ohci *pxa_ohci;
371	struct ohci_hcd *ohci;
372	struct resource *r;
373	struct clk *usb_clk;
374
375	retval = ohci_pxa_of_init(pdev);
376	if (retval)
377		return retval;
378
379	inf = dev_get_platdata(&pdev->dev);
380
381	if (!inf)
382		return -ENODEV;
383
384	irq = platform_get_irq(pdev, 0);
385	if (irq < 0) {
386		pr_err("no resource of IORESOURCE_IRQ");
387		return -ENXIO;
388	}
389
390	usb_clk = clk_get(&pdev->dev, NULL);
391	if (IS_ERR(usb_clk))
392		return PTR_ERR(usb_clk);
393
394	hcd = usb_create_hcd (driver, &pdev->dev, "pxa27x");
395	if (!hcd) {
396		retval = -ENOMEM;
397		goto err0;
398	}
399
400	r = platform_get_resource(pdev, IORESOURCE_MEM, 0);
401	if (!r) {
402		pr_err("no resource of IORESOURCE_MEM");
403		retval = -ENXIO;
404		goto err1;
405	}
406
407	hcd->rsrc_start = r->start;
408	hcd->rsrc_len = resource_size(r);
409
410	if (!request_mem_region(hcd->rsrc_start, hcd->rsrc_len, hcd_name)) {
411		pr_debug("request_mem_region failed");
412		retval = -EBUSY;
413		goto err1;
414	}
415
416	hcd->regs = ioremap(hcd->rsrc_start, hcd->rsrc_len);
417	if (!hcd->regs) {
418		pr_debug("ioremap failed");
419		retval = -ENOMEM;
420		goto err2;
421	}
422
423	/* initialize "struct pxa27x_ohci" */
424	pxa_ohci = to_pxa27x_ohci(hcd);
425	pxa_ohci->clk = usb_clk;
426	pxa_ohci->mmio_base = (void __iomem *)hcd->regs;
427
428	retval = pxa27x_start_hc(pxa_ohci, &pdev->dev);
429	if (retval < 0) {
430		pr_debug("pxa27x_start_hc failed");
431		goto err3;
432	}
433
434	/* Select Power Management Mode */
435	pxa27x_ohci_select_pmm(pxa_ohci, inf->port_mode);
436
437	if (inf->power_budget)
438		hcd->power_budget = inf->power_budget;
439
440	/* The value of NDP in roothub_a is incorrect on this hardware */
441	ohci = hcd_to_ohci(hcd);
442	ohci->num_ports = 3;
443
444	retval = usb_add_hcd(hcd, irq, 0);
445	if (retval == 0)
446		return retval;
447
448	pxa27x_stop_hc(pxa_ohci, &pdev->dev);
449 err3:
450	iounmap(hcd->regs);
451 err2:
452	release_mem_region(hcd->rsrc_start, hcd->rsrc_len);
453 err1:
454	usb_put_hcd(hcd);
455 err0:
456	clk_put(usb_clk);
457	return retval;
458}
459
460
461/* may be called without controller electrically present */
462/* may be called with controller, bus, and devices active */
463
464/**
465 * usb_hcd_pxa27x_remove - shutdown processing for pxa27x-based HCDs
466 * @dev: USB Host Controller being removed
467 * Context: !in_interrupt()
468 *
469 * Reverses the effect of usb_hcd_pxa27x_probe(), first invoking
470 * the HCD's stop() method.  It is always called from a thread
471 * context, normally "rmmod", "apmd", or something similar.
472 *
473 */
474void usb_hcd_pxa27x_remove (struct usb_hcd *hcd, struct platform_device *pdev)
475{
476	struct pxa27x_ohci *pxa_ohci = to_pxa27x_ohci(hcd);
477
478	usb_remove_hcd(hcd);
479	pxa27x_stop_hc(pxa_ohci, &pdev->dev);
480	iounmap(hcd->regs);
481	release_mem_region(hcd->rsrc_start, hcd->rsrc_len);
482	clk_put(pxa_ohci->clk);
483	usb_put_hcd(hcd);
484}
485
486/*-------------------------------------------------------------------------*/
487
488static int ohci_hcd_pxa27x_drv_probe(struct platform_device *pdev)
489{
490	pr_debug ("In ohci_hcd_pxa27x_drv_probe");
491
492	if (usb_disabled())
493		return -ENODEV;
494
495	return usb_hcd_pxa27x_probe(&ohci_pxa27x_hc_driver, pdev);
496}
497
498static int ohci_hcd_pxa27x_drv_remove(struct platform_device *pdev)
499{
500	struct usb_hcd *hcd = platform_get_drvdata(pdev);
501
502	usb_hcd_pxa27x_remove(hcd, pdev);
503	return 0;
504}
505
506#ifdef CONFIG_PM
507static int ohci_hcd_pxa27x_drv_suspend(struct device *dev)
508{
509	struct usb_hcd *hcd = dev_get_drvdata(dev);
510	struct pxa27x_ohci *pxa_ohci = to_pxa27x_ohci(hcd);
511	struct ohci_hcd *ohci = hcd_to_ohci(hcd);
512
513	if (time_before(jiffies, ohci->next_statechange))
514		msleep(5);
515	ohci->next_statechange = jiffies;
516
517	pxa27x_stop_hc(pxa_ohci, dev);
518	return 0;
519}
520
521static int ohci_hcd_pxa27x_drv_resume(struct device *dev)
522{
523	struct usb_hcd *hcd = dev_get_drvdata(dev);
524	struct pxa27x_ohci *pxa_ohci = to_pxa27x_ohci(hcd);
525	struct pxaohci_platform_data *inf = dev_get_platdata(dev);
526	struct ohci_hcd *ohci = hcd_to_ohci(hcd);
527	int status;
528
529	if (time_before(jiffies, ohci->next_statechange))
530		msleep(5);
531	ohci->next_statechange = jiffies;
532
533	status = pxa27x_start_hc(pxa_ohci, dev);
534	if (status < 0)
535		return status;
536
537	/* Select Power Management Mode */
538	pxa27x_ohci_select_pmm(pxa_ohci, inf->port_mode);
539
540	ohci_resume(hcd, false);
541	return 0;
542}
543
544static const struct dev_pm_ops ohci_hcd_pxa27x_pm_ops = {
545	.suspend	= ohci_hcd_pxa27x_drv_suspend,
546	.resume		= ohci_hcd_pxa27x_drv_resume,
547};
548#endif
549
550static struct platform_driver ohci_hcd_pxa27x_driver = {
551	.probe		= ohci_hcd_pxa27x_drv_probe,
552	.remove		= ohci_hcd_pxa27x_drv_remove,
553	.shutdown	= usb_hcd_platform_shutdown,
554	.driver		= {
555		.name	= "pxa27x-ohci",
556		.owner	= THIS_MODULE,
557		.of_match_table = of_match_ptr(pxa_ohci_dt_ids),
558#ifdef CONFIG_PM
559		.pm	= &ohci_hcd_pxa27x_pm_ops,
560#endif
561	},
562};
563
564static const struct ohci_driver_overrides pxa27x_overrides __initconst = {
565	.extra_priv_size =      sizeof(struct pxa27x_ohci),
566};
567
568static int __init ohci_pxa27x_init(void)
569{
570	if (usb_disabled())
571		return -ENODEV;
572
573	pr_info("%s: " DRIVER_DESC "\n", hcd_name);
574	ohci_init_driver(&ohci_pxa27x_hc_driver, &pxa27x_overrides);
575	return platform_driver_register(&ohci_hcd_pxa27x_driver);
576}
577module_init(ohci_pxa27x_init);
578
579static void __exit ohci_pxa27x_cleanup(void)
580{
581	platform_driver_unregister(&ohci_hcd_pxa27x_driver);
582}
583module_exit(ohci_pxa27x_cleanup);
584
585MODULE_DESCRIPTION(DRIVER_DESC);
586MODULE_LICENSE("GPL");
587MODULE_ALIAS("platform:pxa27x-ohci");
588