blob: 3e24749597359108a723410be8e213961916b6aa [file] [log] [blame]
Greg Kroah-Hartman5fd54ac2017-11-03 11:28:30 +01001// SPDX-License-Identifier: GPL-1.0+
Linus Torvalds1da177e2005-04-16 15:20:36 -07002/*
3 * OHCI HCD (Host Controller Driver) for USB.
4 *
5 * (C) Copyright 1999 Roman Weissgaerber <weissg@vienna.at>
6 * (C) Copyright 2000-2002 David Brownell <dbrownell@users.sourceforge.net>
7 * (C) Copyright 2002 Hewlett-Packard Company
8 *
9 * Bus Glue for pxa27x
10 *
11 * Written by Christopher Hoover <ch@hpl.hp.com>
12 * Based on fragments of previous driver by Russell King et al.
13 *
14 * Modified for LH7A404 from ohci-sa1111.c
15 * by Durgesh Pattamatta <pattamattad@sharpsec.com>
16 *
17 * Modified for pxa27x from ohci-lh7a404.c
18 * by Nick Bane <nick@cecomputing.co.uk> 26-8-2004
19 *
20 * This file is licenced under the GPL.
21 */
22
eric miaoa8bcf412007-12-12 08:53:25 +080023#include <linux/clk.h>
Manjunath Goudarb8ad5c32013-09-21 16:38:46 +053024#include <linux/device.h>
Daniel Mack98763882013-11-15 14:19:02 +010025#include <linux/dma-mapping.h>
Manjunath Goudarb8ad5c32013-09-21 16:38:46 +053026#include <linux/io.h>
27#include <linux/kernel.h>
28#include <linux/module.h>
Daniel Mack1139b452012-07-30 09:29:12 +020029#include <linux/of_platform.h>
30#include <linux/of_gpio.h>
Arnd Bergmann293b2da2012-08-24 15:16:48 +020031#include <linux/platform_data/usb-ohci-pxa27x.h>
32#include <linux/platform_data/usb-pxa3xx-ulpi.h>
Manjunath Goudarb8ad5c32013-09-21 16:38:46 +053033#include <linux/platform_device.h>
Laurent Pinchartcecabe52014-04-16 18:00:11 +020034#include <linux/regulator/consumer.h>
Manjunath Goudarb8ad5c32013-09-21 16:38:46 +053035#include <linux/signal.h>
36#include <linux/usb.h>
37#include <linux/usb/hcd.h>
38#include <linux/usb/otg.h>
39
40#include <mach/hardware.h>
41
42#include "ohci.h"
43
44#define DRIVER_DESC "OHCI PXA27x/PXA3x driver"
Linus Torvalds1da177e2005-04-16 15:20:36 -070045
Eric Miao596050b2008-09-27 16:12:32 +080046/*
47 * UHC: USB Host Controller (OHCI-like) register definitions
48 */
Eric Miao0c392ed2008-10-04 12:57:21 +080049#define UHCREV (0x0000) /* UHC HCI Spec Revision */
50#define UHCHCON (0x0004) /* UHC Host Control Register */
51#define UHCCOMS (0x0008) /* UHC Command Status Register */
52#define UHCINTS (0x000C) /* UHC Interrupt Status Register */
53#define UHCINTE (0x0010) /* UHC Interrupt Enable */
54#define UHCINTD (0x0014) /* UHC Interrupt Disable */
55#define UHCHCCA (0x0018) /* UHC Host Controller Comm. Area */
56#define UHCPCED (0x001C) /* UHC Period Current Endpt Descr */
57#define UHCCHED (0x0020) /* UHC Control Head Endpt Descr */
58#define UHCCCED (0x0024) /* UHC Control Current Endpt Descr */
59#define UHCBHED (0x0028) /* UHC Bulk Head Endpt Descr */
60#define UHCBCED (0x002C) /* UHC Bulk Current Endpt Descr */
61#define UHCDHEAD (0x0030) /* UHC Done Head */
62#define UHCFMI (0x0034) /* UHC Frame Interval */
63#define UHCFMR (0x0038) /* UHC Frame Remaining */
64#define UHCFMN (0x003C) /* UHC Frame Number */
65#define UHCPERS (0x0040) /* UHC Periodic Start */
66#define UHCLS (0x0044) /* UHC Low Speed Threshold */
Eric Miao596050b2008-09-27 16:12:32 +080067
Eric Miao0c392ed2008-10-04 12:57:21 +080068#define UHCRHDA (0x0048) /* UHC Root Hub Descriptor A */
Eric Miao596050b2008-09-27 16:12:32 +080069#define UHCRHDA_NOCP (1 << 12) /* No over current protection */
70#define UHCRHDA_OCPM (1 << 11) /* Over Current Protection Mode */
71#define UHCRHDA_POTPGT(x) \
72 (((x) & 0xff) << 24) /* Power On To Power Good Time */
73
Eric Miao0c392ed2008-10-04 12:57:21 +080074#define UHCRHDB (0x004C) /* UHC Root Hub Descriptor B */
75#define UHCRHS (0x0050) /* UHC Root Hub Status */
76#define UHCRHPS1 (0x0054) /* UHC Root Hub Port 1 Status */
77#define UHCRHPS2 (0x0058) /* UHC Root Hub Port 2 Status */
78#define UHCRHPS3 (0x005C) /* UHC Root Hub Port 3 Status */
Eric Miao596050b2008-09-27 16:12:32 +080079
Eric Miao0c392ed2008-10-04 12:57:21 +080080#define UHCSTAT (0x0060) /* UHC Status Register */
Eric Miao596050b2008-09-27 16:12:32 +080081#define UHCSTAT_UPS3 (1 << 16) /* USB Power Sense Port3 */
82#define UHCSTAT_SBMAI (1 << 15) /* System Bus Master Abort Interrupt*/
83#define UHCSTAT_SBTAI (1 << 14) /* System Bus Target Abort Interrupt*/
84#define UHCSTAT_UPRI (1 << 13) /* USB Port Resume Interrupt */
85#define UHCSTAT_UPS2 (1 << 12) /* USB Power Sense Port 2 */
86#define UHCSTAT_UPS1 (1 << 11) /* USB Power Sense Port 1 */
87#define UHCSTAT_HTA (1 << 10) /* HCI Target Abort */
88#define UHCSTAT_HBA (1 << 8) /* HCI Buffer Active */
89#define UHCSTAT_RWUE (1 << 7) /* HCI Remote Wake Up Event */
90
Eric Miao0c392ed2008-10-04 12:57:21 +080091#define UHCHR (0x0064) /* UHC Reset Register */
Eric Miao596050b2008-09-27 16:12:32 +080092#define UHCHR_SSEP3 (1 << 11) /* Sleep Standby Enable for Port3 */
93#define UHCHR_SSEP2 (1 << 10) /* Sleep Standby Enable for Port2 */
94#define UHCHR_SSEP1 (1 << 9) /* Sleep Standby Enable for Port1 */
95#define UHCHR_PCPL (1 << 7) /* Power control polarity low */
96#define UHCHR_PSPL (1 << 6) /* Power sense polarity low */
97#define UHCHR_SSE (1 << 5) /* Sleep Standby Enable */
98#define UHCHR_UIT (1 << 4) /* USB Interrupt Test */
99#define UHCHR_SSDC (1 << 3) /* Simulation Scale Down Clock */
100#define UHCHR_CGR (1 << 2) /* Clock Generation Reset */
101#define UHCHR_FHR (1 << 1) /* Force Host Controller Reset */
102#define UHCHR_FSBIR (1 << 0) /* Force System Bus Iface Reset */
103
Eric Miao0c392ed2008-10-04 12:57:21 +0800104#define UHCHIE (0x0068) /* UHC Interrupt Enable Register*/
Eric Miao596050b2008-09-27 16:12:32 +0800105#define UHCHIE_UPS3IE (1 << 14) /* Power Sense Port3 IntEn */
106#define UHCHIE_UPRIE (1 << 13) /* Port Resume IntEn */
107#define UHCHIE_UPS2IE (1 << 12) /* Power Sense Port2 IntEn */
108#define UHCHIE_UPS1IE (1 << 11) /* Power Sense Port1 IntEn */
109#define UHCHIE_TAIE (1 << 10) /* HCI Interface Transfer Abort
110 Interrupt Enable*/
111#define UHCHIE_HBAIE (1 << 8) /* HCI Buffer Active IntEn */
112#define UHCHIE_RWIE (1 << 7) /* Remote Wake-up IntEn */
113
Eric Miao0c392ed2008-10-04 12:57:21 +0800114#define UHCHIT (0x006C) /* UHC Interrupt Test register */
Eric Miao596050b2008-09-27 16:12:32 +0800115
Linus Torvalds1da177e2005-04-16 15:20:36 -0700116#define PXA_UHC_MAX_PORTNUM 3
117
Manjunath Goudarb8ad5c32013-09-21 16:38:46 +0530118static const char hcd_name[] = "ohci-pxa27x";
Linus Torvalds1da177e2005-04-16 15:20:36 -0700119
Manjunath Goudarb8ad5c32013-09-21 16:38:46 +0530120static struct hc_driver __read_mostly ohci_pxa27x_hc_driver;
121
122struct pxa27x_ohci {
Eric Miao0c392ed2008-10-04 12:57:21 +0800123 struct clk *clk;
124 void __iomem *mmio_base;
Laurent Pinchartcecabe52014-04-16 18:00:11 +0200125 struct regulator *vbus[3];
126 bool vbus_enabled[3];
Eric Miao0c392ed2008-10-04 12:57:21 +0800127};
128
Manjunath Goudarb8ad5c32013-09-21 16:38:46 +0530129#define to_pxa27x_ohci(hcd) (struct pxa27x_ohci *)(hcd_to_ohci(hcd)->priv)
eric miaoa8bcf412007-12-12 08:53:25 +0800130
Linus Torvalds1da177e2005-04-16 15:20:36 -0700131/*
132 PMM_NPS_MODE -- PMM Non-power switching mode
133 Ports are powered continuously.
134
135 PMM_GLOBAL_MODE -- PMM global switching mode
136 All ports are powered at the same time.
137
138 PMM_PERPORT_MODE -- PMM per port switching mode
139 Ports are powered individually.
140 */
Manjunath Goudarb8ad5c32013-09-21 16:38:46 +0530141static int pxa27x_ohci_select_pmm(struct pxa27x_ohci *pxa_ohci, int mode)
Linus Torvalds1da177e2005-04-16 15:20:36 -0700142{
Manjunath Goudarb8ad5c32013-09-21 16:38:46 +0530143 uint32_t uhcrhda = __raw_readl(pxa_ohci->mmio_base + UHCRHDA);
144 uint32_t uhcrhdb = __raw_readl(pxa_ohci->mmio_base + UHCRHDB);
Eric Miao0c392ed2008-10-04 12:57:21 +0800145
146 switch (mode) {
Linus Torvalds1da177e2005-04-16 15:20:36 -0700147 case PMM_NPS_MODE:
Eric Miao0c392ed2008-10-04 12:57:21 +0800148 uhcrhda |= RH_A_NPS;
David Brownelldd9048a2006-12-05 03:18:31 -0800149 break;
Linus Torvalds1da177e2005-04-16 15:20:36 -0700150 case PMM_GLOBAL_MODE:
Eric Miao0c392ed2008-10-04 12:57:21 +0800151 uhcrhda &= ~(RH_A_NPS & RH_A_PSM);
Linus Torvalds1da177e2005-04-16 15:20:36 -0700152 break;
153 case PMM_PERPORT_MODE:
Eric Miao0c392ed2008-10-04 12:57:21 +0800154 uhcrhda &= ~(RH_A_NPS);
155 uhcrhda |= RH_A_PSM;
Linus Torvalds1da177e2005-04-16 15:20:36 -0700156
157 /* Set port power control mask bits, only 3 ports. */
Eric Miao0c392ed2008-10-04 12:57:21 +0800158 uhcrhdb |= (0x7<<17);
Linus Torvalds1da177e2005-04-16 15:20:36 -0700159 break;
160 default:
161 printk( KERN_ERR
David Brownelldd9048a2006-12-05 03:18:31 -0800162 "Invalid mode %d, set to non-power switch mode.\n",
Linus Torvalds1da177e2005-04-16 15:20:36 -0700163 mode );
164
Eric Miao0c392ed2008-10-04 12:57:21 +0800165 uhcrhda |= RH_A_NPS;
Linus Torvalds1da177e2005-04-16 15:20:36 -0700166 }
167
Manjunath Goudarb8ad5c32013-09-21 16:38:46 +0530168 __raw_writel(uhcrhda, pxa_ohci->mmio_base + UHCRHDA);
169 __raw_writel(uhcrhdb, pxa_ohci->mmio_base + UHCRHDB);
Linus Torvalds1da177e2005-04-16 15:20:36 -0700170 return 0;
171}
172
Laurent Pinchartcecabe52014-04-16 18:00:11 +0200173static int pxa27x_ohci_set_vbus_power(struct pxa27x_ohci *pxa_ohci,
174 unsigned int port, bool enable)
175{
176 struct regulator *vbus = pxa_ohci->vbus[port];
177 int ret = 0;
178
179 if (IS_ERR_OR_NULL(vbus))
180 return 0;
181
182 if (enable && !pxa_ohci->vbus_enabled[port])
183 ret = regulator_enable(vbus);
184 else if (!enable && pxa_ohci->vbus_enabled[port])
185 ret = regulator_disable(vbus);
186
187 if (ret < 0)
188 return ret;
189
190 pxa_ohci->vbus_enabled[port] = enable;
191
192 return 0;
193}
194
195static int pxa27x_ohci_hub_control(struct usb_hcd *hcd, u16 typeReq, u16 wValue,
196 u16 wIndex, char *buf, u16 wLength)
197{
198 struct pxa27x_ohci *pxa_ohci = to_pxa27x_ohci(hcd);
199 int ret;
200
201 switch (typeReq) {
202 case SetPortFeature:
203 case ClearPortFeature:
204 if (!wIndex || wIndex > 3)
205 return -EPIPE;
206
207 if (wValue != USB_PORT_FEAT_POWER)
208 break;
209
210 ret = pxa27x_ohci_set_vbus_power(pxa_ohci, wIndex - 1,
211 typeReq == SetPortFeature);
212 if (ret)
213 return ret;
214 break;
215 }
216
217 return ohci_hub_control(hcd, typeReq, wValue, wIndex, buf, wLength);
218}
Linus Torvalds1da177e2005-04-16 15:20:36 -0700219/*-------------------------------------------------------------------------*/
220
Manjunath Goudarb8ad5c32013-09-21 16:38:46 +0530221static inline void pxa27x_setup_hc(struct pxa27x_ohci *pxa_ohci,
Eric Miao0c392ed2008-10-04 12:57:21 +0800222 struct pxaohci_platform_data *inf)
Eric Miao097b5332008-09-27 15:49:57 +0800223{
Manjunath Goudarb8ad5c32013-09-21 16:38:46 +0530224 uint32_t uhchr = __raw_readl(pxa_ohci->mmio_base + UHCHR);
225 uint32_t uhcrhda = __raw_readl(pxa_ohci->mmio_base + UHCRHDA);
Eric Miao097b5332008-09-27 15:49:57 +0800226
227 if (inf->flags & ENABLE_PORT1)
228 uhchr &= ~UHCHR_SSEP1;
229
230 if (inf->flags & ENABLE_PORT2)
231 uhchr &= ~UHCHR_SSEP2;
232
233 if (inf->flags & ENABLE_PORT3)
234 uhchr &= ~UHCHR_SSEP3;
235
236 if (inf->flags & POWER_CONTROL_LOW)
237 uhchr |= UHCHR_PCPL;
238
239 if (inf->flags & POWER_SENSE_LOW)
240 uhchr |= UHCHR_PSPL;
241
242 if (inf->flags & NO_OC_PROTECTION)
243 uhcrhda |= UHCRHDA_NOCP;
Aric Blumer7b4361f2009-07-30 13:26:58 -0400244 else
245 uhcrhda &= ~UHCRHDA_NOCP;
Eric Miao097b5332008-09-27 15:49:57 +0800246
247 if (inf->flags & OC_MODE_PERPORT)
248 uhcrhda |= UHCRHDA_OCPM;
Aric Blumer7b4361f2009-07-30 13:26:58 -0400249 else
250 uhcrhda &= ~UHCRHDA_OCPM;
Eric Miao097b5332008-09-27 15:49:57 +0800251
252 if (inf->power_on_delay) {
253 uhcrhda &= ~UHCRHDA_POTPGT(0xff);
254 uhcrhda |= UHCRHDA_POTPGT(inf->power_on_delay / 2);
255 }
256
Manjunath Goudarb8ad5c32013-09-21 16:38:46 +0530257 __raw_writel(uhchr, pxa_ohci->mmio_base + UHCHR);
258 __raw_writel(uhcrhda, pxa_ohci->mmio_base + UHCRHDA);
Eric Miao0c392ed2008-10-04 12:57:21 +0800259}
260
Manjunath Goudarb8ad5c32013-09-21 16:38:46 +0530261static inline void pxa27x_reset_hc(struct pxa27x_ohci *pxa_ohci)
Eric Miao0c392ed2008-10-04 12:57:21 +0800262{
Manjunath Goudarb8ad5c32013-09-21 16:38:46 +0530263 uint32_t uhchr = __raw_readl(pxa_ohci->mmio_base + UHCHR);
Eric Miao0c392ed2008-10-04 12:57:21 +0800264
Manjunath Goudarb8ad5c32013-09-21 16:38:46 +0530265 __raw_writel(uhchr | UHCHR_FHR, pxa_ohci->mmio_base + UHCHR);
Eric Miao0c392ed2008-10-04 12:57:21 +0800266 udelay(11);
Manjunath Goudarb8ad5c32013-09-21 16:38:46 +0530267 __raw_writel(uhchr & ~UHCHR_FHR, pxa_ohci->mmio_base + UHCHR);
Eric Miao097b5332008-09-27 15:49:57 +0800268}
269
Eric Miao59376cc2010-07-14 21:17:25 +0800270#ifdef CONFIG_PXA27x
Eric Miao0cb0b0d2008-10-04 12:45:39 +0800271extern void pxa27x_clear_otgph(void);
272#else
273#define pxa27x_clear_otgph() do {} while (0)
274#endif
275
Manjunath Goudarb8ad5c32013-09-21 16:38:46 +0530276static int pxa27x_start_hc(struct pxa27x_ohci *pxa_ohci, struct device *dev)
Linus Torvalds1da177e2005-04-16 15:20:36 -0700277{
Arvind Yadavaf06d002017-06-28 10:21:28 +0530278 int retval;
Richard Purdie81f280e2005-11-12 14:22:11 +0000279 struct pxaohci_platform_data *inf;
Eric Miao0c392ed2008-10-04 12:57:21 +0800280 uint32_t uhchr;
Manjunath Goudarb8ad5c32013-09-21 16:38:46 +0530281 struct usb_hcd *hcd = dev_get_drvdata(dev);
Richard Purdie81f280e2005-11-12 14:22:11 +0000282
Jingoo Hand4f09e22013-07-30 19:59:40 +0900283 inf = dev_get_platdata(dev);
Richard Purdie81f280e2005-11-12 14:22:11 +0000284
Arvind Yadavaf06d002017-06-28 10:21:28 +0530285 retval = clk_prepare_enable(pxa_ohci->clk);
286 if (retval)
287 return retval;
Linus Torvalds1da177e2005-04-16 15:20:36 -0700288
Manjunath Goudarb8ad5c32013-09-21 16:38:46 +0530289 pxa27x_reset_hc(pxa_ohci);
Linus Torvalds1da177e2005-04-16 15:20:36 -0700290
Manjunath Goudarb8ad5c32013-09-21 16:38:46 +0530291 uhchr = __raw_readl(pxa_ohci->mmio_base + UHCHR) | UHCHR_FSBIR;
292 __raw_writel(uhchr, pxa_ohci->mmio_base + UHCHR);
Eric Miao0c392ed2008-10-04 12:57:21 +0800293
Manjunath Goudarb8ad5c32013-09-21 16:38:46 +0530294 while (__raw_readl(pxa_ohci->mmio_base + UHCHR) & UHCHR_FSBIR)
Linus Torvalds1da177e2005-04-16 15:20:36 -0700295 cpu_relax();
296
Manjunath Goudarb8ad5c32013-09-21 16:38:46 +0530297 pxa27x_setup_hc(pxa_ohci, inf);
Eric Miao097b5332008-09-27 15:49:57 +0800298
Richard Purdie81f280e2005-11-12 14:22:11 +0000299 if (inf->init)
300 retval = inf->init(dev);
Linus Torvalds1da177e2005-04-16 15:20:36 -0700301
Arvind Yadavaf06d002017-06-28 10:21:28 +0530302 if (retval < 0) {
303 clk_disable_unprepare(pxa_ohci->clk);
Richard Purdie81f280e2005-11-12 14:22:11 +0000304 return retval;
Arvind Yadavaf06d002017-06-28 10:21:28 +0530305 }
Linus Torvalds1da177e2005-04-16 15:20:36 -0700306
Igor Grinberg6dc3ae82010-07-27 15:06:59 +0300307 if (cpu_is_pxa3xx())
Manjunath Goudarb8ad5c32013-09-21 16:38:46 +0530308 pxa3xx_u2d_start_hc(&hcd->self);
Igor Grinberg6dc3ae82010-07-27 15:06:59 +0300309
Manjunath Goudarb8ad5c32013-09-21 16:38:46 +0530310 uhchr = __raw_readl(pxa_ohci->mmio_base + UHCHR) & ~UHCHR_SSE;
311 __raw_writel(uhchr, pxa_ohci->mmio_base + UHCHR);
312 __raw_writel(UHCHIE_UPRIE | UHCHIE_RWIE, pxa_ohci->mmio_base + UHCHIE);
David Brownell155faf52005-08-31 11:54:09 -0700313
314 /* Clear any OTG Pin Hold */
Eric Miao0cb0b0d2008-10-04 12:45:39 +0800315 pxa27x_clear_otgph();
Richard Purdie81f280e2005-11-12 14:22:11 +0000316 return 0;
Linus Torvalds1da177e2005-04-16 15:20:36 -0700317}
318
Manjunath Goudarb8ad5c32013-09-21 16:38:46 +0530319static void pxa27x_stop_hc(struct pxa27x_ohci *pxa_ohci, struct device *dev)
Linus Torvalds1da177e2005-04-16 15:20:36 -0700320{
Richard Purdie81f280e2005-11-12 14:22:11 +0000321 struct pxaohci_platform_data *inf;
Manjunath Goudarb8ad5c32013-09-21 16:38:46 +0530322 struct usb_hcd *hcd = dev_get_drvdata(dev);
Eric Miao0c392ed2008-10-04 12:57:21 +0800323 uint32_t uhccoms;
Richard Purdie81f280e2005-11-12 14:22:11 +0000324
Jingoo Hand4f09e22013-07-30 19:59:40 +0900325 inf = dev_get_platdata(dev);
Richard Purdie81f280e2005-11-12 14:22:11 +0000326
Igor Grinberg6dc3ae82010-07-27 15:06:59 +0300327 if (cpu_is_pxa3xx())
Manjunath Goudarb8ad5c32013-09-21 16:38:46 +0530328 pxa3xx_u2d_stop_hc(&hcd->self);
Igor Grinberg6dc3ae82010-07-27 15:06:59 +0300329
Richard Purdie81f280e2005-11-12 14:22:11 +0000330 if (inf->exit)
331 inf->exit(dev);
332
Manjunath Goudarb8ad5c32013-09-21 16:38:46 +0530333 pxa27x_reset_hc(pxa_ohci);
Linus Torvalds1da177e2005-04-16 15:20:36 -0700334
Eric Miao0c392ed2008-10-04 12:57:21 +0800335 /* Host Controller Reset */
Manjunath Goudarb8ad5c32013-09-21 16:38:46 +0530336 uhccoms = __raw_readl(pxa_ohci->mmio_base + UHCCOMS) | 0x01;
337 __raw_writel(uhccoms, pxa_ohci->mmio_base + UHCCOMS);
Linus Torvalds1da177e2005-04-16 15:20:36 -0700338 udelay(10);
339
Manjunath Goudarb8ad5c32013-09-21 16:38:46 +0530340 clk_disable_unprepare(pxa_ohci->clk);
Linus Torvalds1da177e2005-04-16 15:20:36 -0700341}
342
Daniel Mack1139b452012-07-30 09:29:12 +0200343#ifdef CONFIG_OF
344static const struct of_device_id pxa_ohci_dt_ids[] = {
345 { .compatible = "marvell,pxa-ohci" },
346 { }
347};
348
349MODULE_DEVICE_TABLE(of, pxa_ohci_dt_ids);
350
Bill Pemberton41ac7b32012-11-19 13:21:48 -0500351static int ohci_pxa_of_init(struct platform_device *pdev)
Daniel Mack1139b452012-07-30 09:29:12 +0200352{
353 struct device_node *np = pdev->dev.of_node;
354 struct pxaohci_platform_data *pdata;
355 u32 tmp;
Russell King22d9d8e2013-06-10 16:28:49 +0100356 int ret;
Daniel Mack1139b452012-07-30 09:29:12 +0200357
358 if (!np)
359 return 0;
360
361 /* Right now device-tree probed devices don't get dma_mask set.
362 * Since shared usb code relies on it, set it here for now.
363 * Once we have dma capability bindings this can go away.
364 */
Russell Kinge1fd7342013-06-27 12:36:37 +0100365 ret = dma_coerce_mask_and_coherent(&pdev->dev, DMA_BIT_MASK(32));
Russell King22d9d8e2013-06-10 16:28:49 +0100366 if (ret)
367 return ret;
Daniel Mack1139b452012-07-30 09:29:12 +0200368
369 pdata = devm_kzalloc(&pdev->dev, sizeof(*pdata), GFP_KERNEL);
370 if (!pdata)
371 return -ENOMEM;
372
Saurabh Sengar144e38c2015-11-16 18:18:33 +0530373 if (of_property_read_bool(np, "marvell,enable-port1"))
Daniel Mack1139b452012-07-30 09:29:12 +0200374 pdata->flags |= ENABLE_PORT1;
Saurabh Sengar144e38c2015-11-16 18:18:33 +0530375 if (of_property_read_bool(np, "marvell,enable-port2"))
Daniel Mack1139b452012-07-30 09:29:12 +0200376 pdata->flags |= ENABLE_PORT2;
Saurabh Sengar144e38c2015-11-16 18:18:33 +0530377 if (of_property_read_bool(np, "marvell,enable-port3"))
Daniel Mack1139b452012-07-30 09:29:12 +0200378 pdata->flags |= ENABLE_PORT3;
Saurabh Sengar144e38c2015-11-16 18:18:33 +0530379 if (of_property_read_bool(np, "marvell,port-sense-low"))
Daniel Mack1139b452012-07-30 09:29:12 +0200380 pdata->flags |= POWER_SENSE_LOW;
Saurabh Sengar144e38c2015-11-16 18:18:33 +0530381 if (of_property_read_bool(np, "marvell,power-control-low"))
Daniel Mack1139b452012-07-30 09:29:12 +0200382 pdata->flags |= POWER_CONTROL_LOW;
Saurabh Sengar144e38c2015-11-16 18:18:33 +0530383 if (of_property_read_bool(np, "marvell,no-oc-protection"))
Daniel Mack1139b452012-07-30 09:29:12 +0200384 pdata->flags |= NO_OC_PROTECTION;
Saurabh Sengar144e38c2015-11-16 18:18:33 +0530385 if (of_property_read_bool(np, "marvell,oc-mode-perport"))
Daniel Mack1139b452012-07-30 09:29:12 +0200386 pdata->flags |= OC_MODE_PERPORT;
387 if (!of_property_read_u32(np, "marvell,power-on-delay", &tmp))
388 pdata->power_on_delay = tmp;
389 if (!of_property_read_u32(np, "marvell,port-mode", &tmp))
390 pdata->port_mode = tmp;
391 if (!of_property_read_u32(np, "marvell,power-budget", &tmp))
392 pdata->power_budget = tmp;
393
394 pdev->dev.platform_data = pdata;
395
396 return 0;
397}
398#else
Bill Pemberton41ac7b32012-11-19 13:21:48 -0500399static int ohci_pxa_of_init(struct platform_device *pdev)
Daniel Mack1139b452012-07-30 09:29:12 +0200400{
401 return 0;
402}
403#endif
Linus Torvalds1da177e2005-04-16 15:20:36 -0700404
405/*-------------------------------------------------------------------------*/
406
407/* configure so an HC device and id are always provided */
408/* always called with process context; sleeping is OK */
409
410
411/**
Manjunath Goudarc9e82b02016-12-01 21:23:04 +0000412 * ohci_hcd_pxa27x_probe - initialize pxa27x-based HCDs
Linus Torvalds1da177e2005-04-16 15:20:36 -0700413 * Context: !in_interrupt()
414 *
415 * Allocates basic resources for this USB host controller, and
416 * then invokes the start() method for the HCD associated with it
417 * through the hotplug entry's driver_data.
418 *
419 */
Manjunath Goudarc9e82b02016-12-01 21:23:04 +0000420static int ohci_hcd_pxa27x_probe(struct platform_device *pdev)
Linus Torvalds1da177e2005-04-16 15:20:36 -0700421{
Eric Miao84bab732008-10-03 22:37:21 +0800422 int retval, irq;
Linus Torvalds1da177e2005-04-16 15:20:36 -0700423 struct usb_hcd *hcd;
Richard Purdie81f280e2005-11-12 14:22:11 +0000424 struct pxaohci_platform_data *inf;
Manjunath Goudarb8ad5c32013-09-21 16:38:46 +0530425 struct pxa27x_ohci *pxa_ohci;
426 struct ohci_hcd *ohci;
Eric Miao84bab732008-10-03 22:37:21 +0800427 struct resource *r;
Eric Miao0c392ed2008-10-04 12:57:21 +0800428 struct clk *usb_clk;
Laurent Pinchartcecabe52014-04-16 18:00:11 +0200429 unsigned int i;
Linus Torvalds1da177e2005-04-16 15:20:36 -0700430
Daniel Mack1139b452012-07-30 09:29:12 +0200431 retval = ohci_pxa_of_init(pdev);
432 if (retval)
433 return retval;
434
Jingoo Hand4f09e22013-07-30 19:59:40 +0900435 inf = dev_get_platdata(&pdev->dev);
Richard Purdie81f280e2005-11-12 14:22:11 +0000436
437 if (!inf)
438 return -ENODEV;
439
Eric Miao84bab732008-10-03 22:37:21 +0800440 irq = platform_get_irq(pdev, 0);
441 if (irq < 0) {
442 pr_err("no resource of IORESOURCE_IRQ");
Robert Jarzmikc3853d52016-02-13 23:10:49 +0100443 return irq;
Linus Torvalds1da177e2005-04-16 15:20:36 -0700444 }
445
Jingoo Hanf1080e42013-12-11 16:26:21 +0900446 usb_clk = devm_clk_get(&pdev->dev, NULL);
eric miaoa8bcf412007-12-12 08:53:25 +0800447 if (IS_ERR(usb_clk))
448 return PTR_ERR(usb_clk);
449
Manjunath Goudarc9e82b02016-12-01 21:23:04 +0000450 hcd = usb_create_hcd(&ohci_pxa27x_hc_driver, &pdev->dev, "pxa27x");
Jingoo Hanf1080e42013-12-11 16:26:21 +0900451 if (!hcd)
452 return -ENOMEM;
Eric Miao84bab732008-10-03 22:37:21 +0800453
454 r = platform_get_resource(pdev, IORESOURCE_MEM, 0);
Jingoo Hanf1080e42013-12-11 16:26:21 +0900455 hcd->regs = devm_ioremap_resource(&pdev->dev, r);
456 if (IS_ERR(hcd->regs)) {
457 retval = PTR_ERR(hcd->regs);
458 goto err;
Linus Torvalds1da177e2005-04-16 15:20:36 -0700459 }
Varka Bhadram15c85d92014-11-04 07:51:17 +0530460 hcd->rsrc_start = r->start;
461 hcd->rsrc_len = resource_size(r);
Linus Torvalds1da177e2005-04-16 15:20:36 -0700462
Eric Miao0c392ed2008-10-04 12:57:21 +0800463 /* initialize "struct pxa27x_ohci" */
Manjunath Goudarb8ad5c32013-09-21 16:38:46 +0530464 pxa_ohci = to_pxa27x_ohci(hcd);
465 pxa_ohci->clk = usb_clk;
466 pxa_ohci->mmio_base = (void __iomem *)hcd->regs;
Eric Miao0c392ed2008-10-04 12:57:21 +0800467
Laurent Pinchartcecabe52014-04-16 18:00:11 +0200468 for (i = 0; i < 3; ++i) {
469 char name[6];
470
471 if (!(inf->flags & (ENABLE_PORT1 << i)))
472 continue;
473
474 sprintf(name, "vbus%u", i + 1);
475 pxa_ohci->vbus[i] = devm_regulator_get(&pdev->dev, name);
476 }
477
Manjunath Goudarb8ad5c32013-09-21 16:38:46 +0530478 retval = pxa27x_start_hc(pxa_ohci, &pdev->dev);
479 if (retval < 0) {
Richard Purdie81f280e2005-11-12 14:22:11 +0000480 pr_debug("pxa27x_start_hc failed");
Jingoo Hanf1080e42013-12-11 16:26:21 +0900481 goto err;
Richard Purdie81f280e2005-11-12 14:22:11 +0000482 }
Linus Torvalds1da177e2005-04-16 15:20:36 -0700483
484 /* Select Power Management Mode */
Manjunath Goudarb8ad5c32013-09-21 16:38:46 +0530485 pxa27x_ohci_select_pmm(pxa_ohci, inf->port_mode);
Linus Torvalds1da177e2005-04-16 15:20:36 -0700486
Richard Purdie0c27c5d2006-06-08 22:44:07 +0100487 if (inf->power_budget)
488 hcd->power_budget = inf->power_budget;
489
Manjunath Goudarb8ad5c32013-09-21 16:38:46 +0530490 /* The value of NDP in roothub_a is incorrect on this hardware */
491 ohci = hcd_to_ohci(hcd);
492 ohci->num_ports = 3;
Linus Torvalds1da177e2005-04-16 15:20:36 -0700493
Yong Zhangb5dd18d2011-09-07 16:10:52 +0800494 retval = usb_add_hcd(hcd, irq, 0);
Peter Chen3c9740a2013-11-05 10:46:02 +0800495 if (retval == 0) {
496 device_wakeup_enable(hcd->self.controller);
Linus Torvalds1da177e2005-04-16 15:20:36 -0700497 return retval;
Peter Chen3c9740a2013-11-05 10:46:02 +0800498 }
Linus Torvalds1da177e2005-04-16 15:20:36 -0700499
Manjunath Goudarb8ad5c32013-09-21 16:38:46 +0530500 pxa27x_stop_hc(pxa_ohci, &pdev->dev);
Jingoo Hanf1080e42013-12-11 16:26:21 +0900501 err:
Linus Torvalds1da177e2005-04-16 15:20:36 -0700502 usb_put_hcd(hcd);
503 return retval;
504}
505
506
507/* may be called without controller electrically present */
508/* may be called with controller, bus, and devices active */
509
510/**
Manjunath Goudarc9e82b02016-12-01 21:23:04 +0000511 * ohci_hcd_pxa27x_remove - shutdown processing for pxa27x-based HCDs
Linus Torvalds1da177e2005-04-16 15:20:36 -0700512 * @dev: USB Host Controller being removed
513 * Context: !in_interrupt()
514 *
Manjunath Goudarc9e82b02016-12-01 21:23:04 +0000515 * Reverses the effect of ohci_hcd_pxa27x_probe(), first invoking
Linus Torvalds1da177e2005-04-16 15:20:36 -0700516 * the HCD's stop() method. It is always called from a thread
517 * context, normally "rmmod", "apmd", or something similar.
518 *
519 */
Manjunath Goudarc9e82b02016-12-01 21:23:04 +0000520static int ohci_hcd_pxa27x_remove(struct platform_device *pdev)
Linus Torvalds1da177e2005-04-16 15:20:36 -0700521{
Manjunath Goudarc9e82b02016-12-01 21:23:04 +0000522 struct usb_hcd *hcd = platform_get_drvdata(pdev);
Manjunath Goudarb8ad5c32013-09-21 16:38:46 +0530523 struct pxa27x_ohci *pxa_ohci = to_pxa27x_ohci(hcd);
Laurent Pinchartcecabe52014-04-16 18:00:11 +0200524 unsigned int i;
Eric Miao0c392ed2008-10-04 12:57:21 +0800525
Linus Torvalds1da177e2005-04-16 15:20:36 -0700526 usb_remove_hcd(hcd);
Manjunath Goudarb8ad5c32013-09-21 16:38:46 +0530527 pxa27x_stop_hc(pxa_ohci, &pdev->dev);
Laurent Pinchartcecabe52014-04-16 18:00:11 +0200528
529 for (i = 0; i < 3; ++i)
530 pxa27x_ohci_set_vbus_power(pxa_ohci, i, false);
531
Linus Torvalds1da177e2005-04-16 15:20:36 -0700532 usb_put_hcd(hcd);
Manjunath Goudarc9e82b02016-12-01 21:23:04 +0000533 return 0;
Linus Torvalds1da177e2005-04-16 15:20:36 -0700534}
535
536/*-------------------------------------------------------------------------*/
537
Mike Rapoportb7f3f592009-07-21 17:49:39 +0300538#ifdef CONFIG_PM
539static int ohci_hcd_pxa27x_drv_suspend(struct device *dev)
Linus Torvalds1da177e2005-04-16 15:20:36 -0700540{
Mike Rapoportb7f3f592009-07-21 17:49:39 +0300541 struct usb_hcd *hcd = dev_get_drvdata(dev);
Manjunath Goudarb8ad5c32013-09-21 16:38:46 +0530542 struct pxa27x_ohci *pxa_ohci = to_pxa27x_ohci(hcd);
543 struct ohci_hcd *ohci = hcd_to_ohci(hcd);
Manjunath Goudar4ceaa892013-10-04 09:58:15 +0530544 bool do_wakeup = device_may_wakeup(dev);
545 int ret;
546
Richard Purdie2e1dcc12005-11-12 14:22:14 +0000547
Manjunath Goudarb8ad5c32013-09-21 16:38:46 +0530548 if (time_before(jiffies, ohci->next_statechange))
Richard Purdie2e1dcc12005-11-12 14:22:14 +0000549 msleep(5);
Manjunath Goudarb8ad5c32013-09-21 16:38:46 +0530550 ohci->next_statechange = jiffies;
Richard Purdie2e1dcc12005-11-12 14:22:14 +0000551
Manjunath Goudar4ceaa892013-10-04 09:58:15 +0530552 ret = ohci_suspend(hcd, do_wakeup);
553 if (ret)
554 return ret;
555
Manjunath Goudarb8ad5c32013-09-21 16:38:46 +0530556 pxa27x_stop_hc(pxa_ohci, dev);
Manjunath Goudar4ceaa892013-10-04 09:58:15 +0530557 return ret;
Linus Torvalds1da177e2005-04-16 15:20:36 -0700558}
559
Mike Rapoportb7f3f592009-07-21 17:49:39 +0300560static int ohci_hcd_pxa27x_drv_resume(struct device *dev)
Linus Torvalds1da177e2005-04-16 15:20:36 -0700561{
Mike Rapoportb7f3f592009-07-21 17:49:39 +0300562 struct usb_hcd *hcd = dev_get_drvdata(dev);
Manjunath Goudarb8ad5c32013-09-21 16:38:46 +0530563 struct pxa27x_ohci *pxa_ohci = to_pxa27x_ohci(hcd);
Jingoo Hand4f09e22013-07-30 19:59:40 +0900564 struct pxaohci_platform_data *inf = dev_get_platdata(dev);
Manjunath Goudarb8ad5c32013-09-21 16:38:46 +0530565 struct ohci_hcd *ohci = hcd_to_ohci(hcd);
Richard Purdie2e1dcc12005-11-12 14:22:14 +0000566 int status;
567
Manjunath Goudarb8ad5c32013-09-21 16:38:46 +0530568 if (time_before(jiffies, ohci->next_statechange))
Richard Purdie2e1dcc12005-11-12 14:22:14 +0000569 msleep(5);
Manjunath Goudarb8ad5c32013-09-21 16:38:46 +0530570 ohci->next_statechange = jiffies;
Richard Purdie2e1dcc12005-11-12 14:22:14 +0000571
Manjunath Goudarb8ad5c32013-09-21 16:38:46 +0530572 status = pxa27x_start_hc(pxa_ohci, dev);
573 if (status < 0)
Richard Purdie2e1dcc12005-11-12 14:22:14 +0000574 return status;
575
Aric D. Blumera75d0482009-07-30 13:42:30 -0400576 /* Select Power Management Mode */
Manjunath Goudarb8ad5c32013-09-21 16:38:46 +0530577 pxa27x_ohci_select_pmm(pxa_ohci, inf->port_mode);
Aric D. Blumera75d0482009-07-30 13:42:30 -0400578
Florian Fainellicfa49b42012-10-08 15:11:29 +0200579 ohci_resume(hcd, false);
Linus Torvalds1da177e2005-04-16 15:20:36 -0700580 return 0;
581}
Mike Rapoportb7f3f592009-07-21 17:49:39 +0300582
Alexey Dobriyan47145212009-12-14 18:00:08 -0800583static const struct dev_pm_ops ohci_hcd_pxa27x_pm_ops = {
Mike Rapoportb7f3f592009-07-21 17:49:39 +0300584 .suspend = ohci_hcd_pxa27x_drv_suspend,
585 .resume = ohci_hcd_pxa27x_drv_resume,
586};
Richard Purdie2e1dcc12005-11-12 14:22:14 +0000587#endif
Linus Torvalds1da177e2005-04-16 15:20:36 -0700588
Russell King3ae5eae2005-11-09 22:32:44 +0000589static struct platform_driver ohci_hcd_pxa27x_driver = {
Manjunath Goudarc9e82b02016-12-01 21:23:04 +0000590 .probe = ohci_hcd_pxa27x_probe,
591 .remove = ohci_hcd_pxa27x_remove,
David Brownelldd9048a2006-12-05 03:18:31 -0800592 .shutdown = usb_hcd_platform_shutdown,
Russell King3ae5eae2005-11-09 22:32:44 +0000593 .driver = {
594 .name = "pxa27x-ohci",
Daniel Mack1139b452012-07-30 09:29:12 +0200595 .of_match_table = of_match_ptr(pxa_ohci_dt_ids),
Mike Rapoportb7f3f592009-07-21 17:49:39 +0300596#ifdef CONFIG_PM
597 .pm = &ohci_hcd_pxa27x_pm_ops,
598#endif
Russell King3ae5eae2005-11-09 22:32:44 +0000599 },
Linus Torvalds1da177e2005-04-16 15:20:36 -0700600};
601
Manjunath Goudarb8ad5c32013-09-21 16:38:46 +0530602static const struct ohci_driver_overrides pxa27x_overrides __initconst = {
603 .extra_priv_size = sizeof(struct pxa27x_ohci),
604};
605
606static int __init ohci_pxa27x_init(void)
607{
608 if (usb_disabled())
609 return -ENODEV;
610
611 pr_info("%s: " DRIVER_DESC "\n", hcd_name);
Laurent Pinchartcecabe52014-04-16 18:00:11 +0200612
Manjunath Goudarb8ad5c32013-09-21 16:38:46 +0530613 ohci_init_driver(&ohci_pxa27x_hc_driver, &pxa27x_overrides);
Laurent Pinchartcecabe52014-04-16 18:00:11 +0200614 ohci_pxa27x_hc_driver.hub_control = pxa27x_ohci_hub_control;
615
Manjunath Goudarb8ad5c32013-09-21 16:38:46 +0530616 return platform_driver_register(&ohci_hcd_pxa27x_driver);
617}
618module_init(ohci_pxa27x_init);
619
620static void __exit ohci_pxa27x_cleanup(void)
621{
622 platform_driver_unregister(&ohci_hcd_pxa27x_driver);
623}
624module_exit(ohci_pxa27x_cleanup);
625
626MODULE_DESCRIPTION(DRIVER_DESC);
627MODULE_LICENSE("GPL");
628MODULE_ALIAS("platform:pxa27x-ohci");