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Greg Kroah-Hartman5fd54ac2017-11-03 11:28:30 +01001// SPDX-License-Identifier: GPL-2.0
Felipe Balbi550a7372008-07-24 12:27:36 +03002/*
3 * Copyright (C) 2005-2007 by Texas Instruments
4 * Some code has been taken from tusb6010.c
5 * Copyrights for that are attributable to:
6 * Copyright (C) 2006 Nokia Corporation
Felipe Balbi550a7372008-07-24 12:27:36 +03007 * Tony Lindgren <tony@atomide.com>
8 *
9 * This file is part of the Inventra Controller Driver for Linux.
Felipe Balbi550a7372008-07-24 12:27:36 +030010 */
11#include <linux/module.h>
12#include <linux/kernel.h>
13#include <linux/sched.h>
Felipe Balbi550a7372008-07-24 12:27:36 +030014#include <linux/init.h>
15#include <linux/list.h>
Felipe Balbi550a7372008-07-24 12:27:36 +030016#include <linux/io.h>
Kishon Vijay Abraham I00a0b1d2012-09-11 14:39:40 +053017#include <linux/of.h>
Felipe Balbidc098862010-12-01 15:01:11 +020018#include <linux/platform_device.h>
19#include <linux/dma-mapping.h>
Hema HK207b0e12011-02-17 12:07:22 +053020#include <linux/pm_runtime.h>
21#include <linux/err.h>
NeilBrown12a19b52012-08-13 12:32:58 +100022#include <linux/delay.h>
Tony Lindgren80555552015-11-30 21:37:12 -080023#include <linux/usb/musb.h>
Kishon Vijay Abraham I14da6992014-03-06 16:38:37 +020024#include <linux/phy/omap_control_phy.h>
Roger Quadros8934d3e2013-10-03 18:12:34 +030025#include <linux/of_platform.h>
Felipe Balbi550a7372008-07-24 12:27:36 +030026
Felipe Balbi550a7372008-07-24 12:27:36 +030027#include "musb_core.h"
28#include "omap2430.h"
29
Felipe Balbia3cee122010-12-02 09:27:29 +020030struct omap2430_glue {
31 struct device *dev;
32 struct platform_device *musb;
Tony Lindgren80555552015-11-30 21:37:12 -080033 enum musb_vbus_id_status status;
Kishon Vijay Abraham I1e5acb82012-06-22 17:40:51 +053034 struct work_struct omap_musb_mailbox_work;
Kishon Vijay Abraham Ica784be2013-01-25 15:54:00 +053035 struct device *control_otghs;
Felipe Balbia3cee122010-12-02 09:27:29 +020036};
Felipe Balbic20aebb2010-12-02 12:44:40 +020037#define glue_to_musb(g) platform_get_drvdata(g->musb)
Felipe Balbia3cee122010-12-02 09:27:29 +020038
Aaro Koskinen4b58ed12013-03-05 13:04:24 +020039static struct omap2430_glue *_glue;
Kishon Vijay Abraham Ic9721432012-06-22 17:40:52 +053040
Felipe Balbi743411b2010-12-01 13:22:05 +020041static void omap2430_musb_set_vbus(struct musb *musb, int is_on)
Felipe Balbi550a7372008-07-24 12:27:36 +030042{
Heikki Krogerusd445b6d2012-02-13 13:24:15 +020043 struct usb_otg *otg = musb->xceiv->otg;
Felipe Balbi550a7372008-07-24 12:27:36 +030044 u8 devctl;
Hema HK594632e2010-12-10 18:10:51 +053045 unsigned long timeout = jiffies + msecs_to_jiffies(1000);
Felipe Balbi550a7372008-07-24 12:27:36 +030046 /* HDRC controls CPEN, but beware current surges during device
47 * connect. They can trigger transient overcurrent conditions
48 * that must be ignored.
49 */
50
51 devctl = musb_readb(musb->mregs, MUSB_DEVCTL);
52
53 if (is_on) {
Antoine Tenarte47d9252014-10-30 18:41:13 +010054 if (musb->xceiv->otg->state == OTG_STATE_A_IDLE) {
NeilBrown12a19b52012-08-13 12:32:58 +100055 int loops = 100;
Hema HK594632e2010-12-10 18:10:51 +053056 /* start the session */
57 devctl |= MUSB_DEVCTL_SESSION;
58 musb_writeb(musb->mregs, MUSB_DEVCTL, devctl);
59 /*
60 * Wait for the musb to set as A device to enable the
61 * VBUS
62 */
Sergei Shtylyov5a805302014-10-24 00:34:12 +040063 while (musb_readb(musb->mregs, MUSB_DEVCTL) &
64 MUSB_DEVCTL_BDEVICE) {
Felipe Balbi550a7372008-07-24 12:27:36 +030065
NeilBrown12a19b52012-08-13 12:32:58 +100066 mdelay(5);
Hema HK594632e2010-12-10 18:10:51 +053067 cpu_relax();
68
NeilBrown12a19b52012-08-13 12:32:58 +100069 if (time_after(jiffies, timeout)
70 || loops-- <= 0) {
Hema HK594632e2010-12-10 18:10:51 +053071 dev_err(musb->controller,
72 "configured as A device timeout");
Hema HK594632e2010-12-10 18:10:51 +053073 break;
74 }
75 }
76
Kishon Vijay Abraham Ibb467cf2013-03-14 11:53:56 +053077 otg_set_vbus(otg, 1);
Hema HK594632e2010-12-10 18:10:51 +053078 } else {
79 musb->is_active = 1;
Antoine Tenarte47d9252014-10-30 18:41:13 +010080 musb->xceiv->otg->state = OTG_STATE_A_WAIT_VRISE;
Hema HK594632e2010-12-10 18:10:51 +053081 devctl |= MUSB_DEVCTL_SESSION;
82 MUSB_HST_MODE(musb);
83 }
Felipe Balbi550a7372008-07-24 12:27:36 +030084 } else {
85 musb->is_active = 0;
86
87 /* NOTE: we're skipping A_WAIT_VFALL -> A_IDLE and
88 * jumping right to B_IDLE...
89 */
90
Antoine Tenarte47d9252014-10-30 18:41:13 +010091 musb->xceiv->otg->state = OTG_STATE_B_IDLE;
Felipe Balbi550a7372008-07-24 12:27:36 +030092 devctl &= ~MUSB_DEVCTL_SESSION;
93
94 MUSB_DEV_MODE(musb);
95 }
96 musb_writeb(musb->mregs, MUSB_DEVCTL, devctl);
97
Felipe Balbi5c8a86e2011-05-11 12:44:08 +030098 dev_dbg(musb->controller, "VBUS %s, devctl %02x "
Felipe Balbi550a7372008-07-24 12:27:36 +030099 /* otg %3x conf %08x prcm %08x */ "\n",
Antoine Tenarte47d9252014-10-30 18:41:13 +0100100 usb_otg_state_string(musb->xceiv->otg->state),
Felipe Balbi550a7372008-07-24 12:27:36 +0300101 musb_readb(musb->mregs, MUSB_DEVCTL));
102}
Felipe Balbi550a7372008-07-24 12:27:36 +0300103
Felipe Balbic20aebb2010-12-02 12:44:40 +0200104static inline void omap2430_low_level_exit(struct musb *musb)
105{
106 u32 l;
107
108 /* in any role */
109 l = musb_readl(musb->mregs, OTG_FORCESTDBY);
110 l |= ENABLEFORCE; /* enable MSTANDBY */
111 musb_writel(musb->mregs, OTG_FORCESTDBY, l);
Felipe Balbic20aebb2010-12-02 12:44:40 +0200112}
113
114static inline void omap2430_low_level_init(struct musb *musb)
115{
116 u32 l;
117
Felipe Balbic20aebb2010-12-02 12:44:40 +0200118 l = musb_readl(musb->mregs, OTG_FORCESTDBY);
119 l &= ~ENABLEFORCE; /* disable MSTANDBY */
120 musb_writel(musb->mregs, OTG_FORCESTDBY, l);
121}
122
Tony Lindgren12b7db22016-05-31 10:05:19 -0500123static int omap2430_musb_mailbox(enum musb_vbus_id_status status)
Hema HK594632e2010-12-10 18:10:51 +0530124{
Kishon Vijay Abraham Ic9721432012-06-22 17:40:52 +0530125 struct omap2430_glue *glue = _glue;
Vikram Pandita712d8ef2011-08-12 07:38:51 -0700126
Aaro Koskinenf8c4b0e2013-03-05 13:04:23 +0200127 if (!glue) {
128 pr_err("%s: musb core is not yet initialized\n", __func__);
Tony Lindgren12b7db22016-05-31 10:05:19 -0500129 return -EPROBE_DEFER;
Aaro Koskinenf8c4b0e2013-03-05 13:04:23 +0200130 }
131 glue->status = status;
132
133 if (!glue_to_musb(glue)) {
Aaro Koskinen80ab72e2012-12-23 01:24:51 +0200134 pr_err("%s: musb core is not yet ready\n", __func__);
Tony Lindgren12b7db22016-05-31 10:05:19 -0500135 return -EPROBE_DEFER;
Kishon Vijay Abraham Ic9721432012-06-22 17:40:52 +0530136 }
137
Kishon Vijay Abraham I1e5acb82012-06-22 17:40:51 +0530138 schedule_work(&glue->omap_musb_mailbox_work);
Tony Lindgren12b7db22016-05-31 10:05:19 -0500139
140 return 0;
Vikram Pandita712d8ef2011-08-12 07:38:51 -0700141}
142
Kishon Vijay Abraham Ic9721432012-06-22 17:40:52 +0530143static void omap_musb_set_mailbox(struct omap2430_glue *glue)
Vikram Pandita712d8ef2011-08-12 07:38:51 -0700144{
Kishon Vijay Abraham I1e5acb82012-06-22 17:40:51 +0530145 struct musb *musb = glue_to_musb(glue);
Tony Lindgrenae909fe2016-09-12 21:48:30 -0500146 struct musb_hdrc_platform_data *pdata =
147 dev_get_platdata(musb->controller);
Hema HK594632e2010-12-10 18:10:51 +0530148 struct omap_musb_board_data *data = pdata->board_data;
Tony Lindgren21f77be2016-05-31 10:05:15 -0500149
Tony Lindgrenae909fe2016-09-12 21:48:30 -0500150 pm_runtime_get_sync(musb->controller);
Kishon Vijay Abraham Ic9721432012-06-22 17:40:52 +0530151 switch (glue->status) {
Tony Lindgren80555552015-11-30 21:37:12 -0800152 case MUSB_ID_GROUND:
Tony Lindgrenae909fe2016-09-12 21:48:30 -0500153 dev_dbg(musb->controller, "ID GND\n");
Hema HK594632e2010-12-10 18:10:51 +0530154
Antoine Tenarte47d9252014-10-30 18:41:13 +0100155 musb->xceiv->otg->state = OTG_STATE_A_IDLE;
Kishon Vijay Abraham Ic9721432012-06-22 17:40:52 +0530156 musb->xceiv->last_event = USB_EVENT_ID;
Felipe Balbi032ec492011-11-24 15:46:26 +0200157 if (musb->gadget_driver) {
Kishon Vijay Abraham Ica784be2013-01-25 15:54:00 +0530158 omap_control_usb_set_mode(glue->control_otghs,
159 USB_MODE_HOST);
Hema HK70045c52011-02-28 15:05:29 +0530160 omap2430_musb_set_vbus(musb, 1);
Hema HK594632e2010-12-10 18:10:51 +0530161 }
162 break;
163
Tony Lindgren80555552015-11-30 21:37:12 -0800164 case MUSB_VBUS_VALID:
Tony Lindgrenae909fe2016-09-12 21:48:30 -0500165 dev_dbg(musb->controller, "VBUS Connect\n");
Hema HK594632e2010-12-10 18:10:51 +0530166
Antoine Tenarte47d9252014-10-30 18:41:13 +0100167 musb->xceiv->otg->state = OTG_STATE_B_IDLE;
Kishon Vijay Abraham Ic9721432012-06-22 17:40:52 +0530168 musb->xceiv->last_event = USB_EVENT_VBUS;
Kishon Vijay Abraham Ica784be2013-01-25 15:54:00 +0530169 omap_control_usb_set_mode(glue->control_otghs, USB_MODE_DEVICE);
Hema HK594632e2010-12-10 18:10:51 +0530170 break;
171
Tony Lindgren80555552015-11-30 21:37:12 -0800172 case MUSB_ID_FLOAT:
173 case MUSB_VBUS_OFF:
Tony Lindgrenae909fe2016-09-12 21:48:30 -0500174 dev_dbg(musb->controller, "VBUS Disconnect\n");
Hema HK594632e2010-12-10 18:10:51 +0530175
Kishon Vijay Abraham Ic9721432012-06-22 17:40:52 +0530176 musb->xceiv->last_event = USB_EVENT_NONE;
Tony Lindgren21f77be2016-05-31 10:05:15 -0500177 if (musb->gadget_driver)
Grazvydas Ignotas2c1fe892013-03-24 17:36:54 +0200178 omap2430_musb_set_vbus(musb, 0);
Hema HK7acc6192011-02-28 14:19:34 +0530179
Kishon Vijay Abraham Ibb467cf2013-03-14 11:53:56 +0530180 if (data->interface_type == MUSB_INTERFACE_UTMI)
181 otg_set_vbus(musb->xceiv->otg, 0);
182
Kishon Vijay Abraham Ica784be2013-01-25 15:54:00 +0530183 omap_control_usb_set_mode(glue->control_otghs,
184 USB_MODE_DISCONNECT);
Hema HK594632e2010-12-10 18:10:51 +0530185 break;
186 default:
Tony Lindgrenae909fe2016-09-12 21:48:30 -0500187 dev_dbg(musb->controller, "ID float\n");
Hema HK594632e2010-12-10 18:10:51 +0530188 }
Tony Lindgrenae909fe2016-09-12 21:48:30 -0500189 pm_runtime_mark_last_busy(musb->controller);
190 pm_runtime_put_autosuspend(musb->controller);
Pali Rohár6fa71782013-09-18 19:03:34 +0200191 atomic_notifier_call_chain(&musb->xceiv->notifier,
192 musb->xceiv->last_event, NULL);
Hema HK594632e2010-12-10 18:10:51 +0530193}
194
Kishon Vijay Abraham Ic9721432012-06-22 17:40:52 +0530195
196static void omap_musb_mailbox_work(struct work_struct *mailbox_work)
197{
198 struct omap2430_glue *glue = container_of(mailbox_work,
199 struct omap2430_glue, omap_musb_mailbox_work);
Felipe Balbi8b2bc2c2014-04-07 10:58:01 -0500200
Kishon Vijay Abraham Ic9721432012-06-22 17:40:52 +0530201 omap_musb_set_mailbox(glue);
202}
203
Philippe De Swertbaef6532012-11-06 15:32:13 +0200204static irqreturn_t omap2430_musb_interrupt(int irq, void *__hci)
205{
206 unsigned long flags;
207 irqreturn_t retval = IRQ_NONE;
208 struct musb *musb = __hci;
209
210 spin_lock_irqsave(&musb->lock, flags);
211
212 musb->int_usb = musb_readb(musb->mregs, MUSB_INTRUSB);
213 musb->int_tx = musb_readw(musb->mregs, MUSB_INTRTX);
214 musb->int_rx = musb_readw(musb->mregs, MUSB_INTRRX);
215
216 if (musb->int_usb || musb->int_tx || musb->int_rx)
217 retval = musb_interrupt(musb);
218
219 spin_unlock_irqrestore(&musb->lock, flags);
220
221 return retval;
222}
223
Felipe Balbi743411b2010-12-01 13:22:05 +0200224static int omap2430_musb_init(struct musb *musb)
Felipe Balbi550a7372008-07-24 12:27:36 +0300225{
Shubhrajyoti Dad579692012-03-22 12:48:06 +0530226 u32 l;
227 int status = 0;
Hema Kalliguddiea65df52010-09-22 19:27:40 -0500228 struct device *dev = musb->controller;
Kishon Vijay Abraham Ic9721432012-06-22 17:40:52 +0530229 struct omap2430_glue *glue = dev_get_drvdata(dev->parent);
Jingoo Hanc1a7d672013-07-30 17:03:12 +0900230 struct musb_hdrc_platform_data *plat = dev_get_platdata(dev);
Hema Kalliguddiea65df52010-09-22 19:27:40 -0500231 struct omap_musb_board_data *data = plat->board_data;
Felipe Balbi550a7372008-07-24 12:27:36 +0300232
David Brownell84e250f2009-03-31 12:30:04 -0700233 /* We require some kind of external transceiver, hooked
234 * up through ULPI. TWL4030-family PMICs include one,
235 * which needs a driver, drivers aren't always needed.
236 */
Johan Hovold5ee17872018-04-18 11:26:22 +0200237 musb->phy = devm_phy_get(dev->parent, "usb2-phy");
Kishon Vijay Abraham I3e3101d2013-09-27 11:53:30 +0530238
Johan Hovold5ee17872018-04-18 11:26:22 +0200239 /* We can't totally remove musb->xceiv as of now because
240 * musb core uses xceiv.state and xceiv.otg. Once we have
241 * a separate state machine to handle otg, these can be moved
242 * out of xceiv and then we can start using the generic PHY
243 * framework
244 */
245 musb->xceiv = devm_usb_get_phy_by_phandle(dev->parent, "usb-phy", 0);
Kishon Vijay Abraham Ib16604f2013-01-25 08:03:26 +0530246
Felipe Balbia90199b2013-03-15 10:57:40 +0200247 if (IS_ERR(musb->xceiv)) {
248 status = PTR_ERR(musb->xceiv);
249
250 if (status == -ENXIO)
251 return status;
252
Ladislav Michldc66ba82016-11-21 08:59:26 -0600253 dev_dbg(dev, "HS USB OTG: no transceiver configured\n");
Ming Lei25736e02013-01-04 23:13:58 +0800254 return -EPROBE_DEFER;
David Brownell84e250f2009-03-31 12:30:04 -0700255 }
256
Kishon Vijay Abraham I3e3101d2013-09-27 11:53:30 +0530257 if (IS_ERR(musb->phy)) {
Ladislav Michl71127a72016-11-21 08:59:25 -0600258 dev_err(dev, "HS USB OTG: no PHY configured\n");
Kishon Vijay Abraham I3e3101d2013-09-27 11:53:30 +0530259 return PTR_ERR(musb->phy);
260 }
Philippe De Swertbaef6532012-11-06 15:32:13 +0200261 musb->isr = omap2430_musb_interrupt;
Tony Lindgrena83e17d2016-05-31 10:05:16 -0500262 phy_init(musb->phy);
Tony Lindgrend8e5f0e2016-10-19 12:03:39 -0500263 phy_power_on(musb->phy);
Philippe De Swertbaef6532012-11-06 15:32:13 +0200264
Felipe Balbi8573e6a2010-01-21 15:33:53 +0200265 l = musb_readl(musb->mregs, OTG_INTERFSEL);
Maulik Mankadde2e1b02010-03-12 10:29:07 +0200266
267 if (data->interface_type == MUSB_INTERFACE_UTMI) {
268 /* OMAP4 uses Internal PHY GS70 which uses UTMI interface */
269 l &= ~ULPI_12PIN; /* Disable ULPI */
270 l |= UTMI_8BIT; /* Enable UTMI */
271 } else {
272 l |= ULPI_12PIN;
273 }
274
Felipe Balbi8573e6a2010-01-21 15:33:53 +0200275 musb_writel(musb->mregs, OTG_INTERFSEL, l);
Felipe Balbi550a7372008-07-24 12:27:36 +0300276
Ladislav Michl71127a72016-11-21 08:59:25 -0600277 dev_dbg(dev, "HS USB OTG: revision 0x%x, sysconfig 0x%02x, "
Felipe Balbi550a7372008-07-24 12:27:36 +0300278 "sysstatus 0x%x, intrfsel 0x%x, simenable 0x%x\n",
Felipe Balbi8573e6a2010-01-21 15:33:53 +0200279 musb_readl(musb->mregs, OTG_REVISION),
280 musb_readl(musb->mregs, OTG_SYSCONFIG),
281 musb_readl(musb->mregs, OTG_SYSSTATUS),
282 musb_readl(musb->mregs, OTG_INTERFSEL),
283 musb_readl(musb->mregs, OTG_SIMENABLE));
Felipe Balbi550a7372008-07-24 12:27:36 +0300284
Tony Lindgren80555552015-11-30 21:37:12 -0800285 if (glue->status != MUSB_UNKNOWN)
Kishon Vijay Abraham Ic9721432012-06-22 17:40:52 +0530286 omap_musb_set_mailbox(glue);
287
Felipe Balbi550a7372008-07-24 12:27:36 +0300288 return 0;
289}
290
Hema HK002eda12011-02-17 12:06:10 +0530291static void omap2430_musb_enable(struct musb *musb)
292{
293 u8 devctl;
294 unsigned long timeout = jiffies + msecs_to_jiffies(1000);
295 struct device *dev = musb->controller;
Kishon Vijay Abraham Ic9721432012-06-22 17:40:52 +0530296 struct omap2430_glue *glue = dev_get_drvdata(dev->parent);
Jingoo Hanc1a7d672013-07-30 17:03:12 +0900297 struct musb_hdrc_platform_data *pdata = dev_get_platdata(dev);
Hema HK002eda12011-02-17 12:06:10 +0530298 struct omap_musb_board_data *data = pdata->board_data;
299
Tony Lindgrena83e17d2016-05-31 10:05:16 -0500300
Kishon Vijay Abraham Ic9721432012-06-22 17:40:52 +0530301 switch (glue->status) {
Hema HK002eda12011-02-17 12:06:10 +0530302
Tony Lindgren80555552015-11-30 21:37:12 -0800303 case MUSB_ID_GROUND:
Kishon Vijay Abraham Ica784be2013-01-25 15:54:00 +0530304 omap_control_usb_set_mode(glue->control_otghs, USB_MODE_HOST);
Felipe Contreras08dec562011-12-19 22:17:50 +0200305 if (data->interface_type != MUSB_INTERFACE_UTMI)
306 break;
307 devctl = musb_readb(musb->mregs, MUSB_DEVCTL);
308 /* start the session */
309 devctl |= MUSB_DEVCTL_SESSION;
310 musb_writeb(musb->mregs, MUSB_DEVCTL, devctl);
311 while (musb_readb(musb->mregs, MUSB_DEVCTL) &
312 MUSB_DEVCTL_BDEVICE) {
313 cpu_relax();
Hema HK002eda12011-02-17 12:06:10 +0530314
Felipe Contreras08dec562011-12-19 22:17:50 +0200315 if (time_after(jiffies, timeout)) {
316 dev_err(dev, "configured as A device timeout");
317 break;
Hema HK002eda12011-02-17 12:06:10 +0530318 }
319 }
320 break;
321
Tony Lindgren80555552015-11-30 21:37:12 -0800322 case MUSB_VBUS_VALID:
Kishon Vijay Abraham Ica784be2013-01-25 15:54:00 +0530323 omap_control_usb_set_mode(glue->control_otghs, USB_MODE_DEVICE);
Hema HK002eda12011-02-17 12:06:10 +0530324 break;
325
326 default:
327 break;
328 }
329}
330
331static void omap2430_musb_disable(struct musb *musb)
332{
Kishon Vijay Abraham Ic9721432012-06-22 17:40:52 +0530333 struct device *dev = musb->controller;
334 struct omap2430_glue *glue = dev_get_drvdata(dev->parent);
335
Tony Lindgren80555552015-11-30 21:37:12 -0800336 if (glue->status != MUSB_UNKNOWN)
Kishon Vijay Abraham Ica784be2013-01-25 15:54:00 +0530337 omap_control_usb_set_mode(glue->control_otghs,
338 USB_MODE_DISCONNECT);
Felipe Balbi550a7372008-07-24 12:27:36 +0300339}
340
Felipe Balbi743411b2010-12-01 13:22:05 +0200341static int omap2430_musb_exit(struct musb *musb)
Felipe Balbi550a7372008-07-24 12:27:36 +0300342{
Tony Lindgrena83e17d2016-05-31 10:05:16 -0500343 struct device *dev = musb->controller;
344 struct omap2430_glue *glue = dev_get_drvdata(dev->parent);
Felipe Balbi550a7372008-07-24 12:27:36 +0300345
Felipe Balbic20aebb2010-12-02 12:44:40 +0200346 omap2430_low_level_exit(musb);
Tony Lindgrend8e5f0e2016-10-19 12:03:39 -0500347 phy_power_off(musb->phy);
Kishon Vijay Abraham I3e3101d2013-09-27 11:53:30 +0530348 phy_exit(musb->phy);
Tony Lindgrena83e17d2016-05-31 10:05:16 -0500349 musb->phy = NULL;
350 cancel_work_sync(&glue->omap_musb_mailbox_work);
Felipe Balbic20aebb2010-12-02 12:44:40 +0200351
Felipe Balbi550a7372008-07-24 12:27:36 +0300352 return 0;
353}
Felipe Balbi743411b2010-12-01 13:22:05 +0200354
Felipe Balbif7ec9432010-12-02 09:48:58 +0200355static const struct musb_platform_ops omap2430_ops = {
Tony Lindgrenf8e9f34f2015-05-01 12:29:27 -0700356 .quirks = MUSB_DMA_INVENTRA,
Tony Lindgren7f6283e2015-05-01 12:29:28 -0700357#ifdef CONFIG_USB_INVENTRA_DMA
358 .dma_init = musbhs_dma_controller_create,
359 .dma_exit = musbhs_dma_controller_destroy,
360#endif
Felipe Balbi743411b2010-12-01 13:22:05 +0200361 .init = omap2430_musb_init,
362 .exit = omap2430_musb_exit,
363
Felipe Balbi743411b2010-12-01 13:22:05 +0200364 .set_vbus = omap2430_musb_set_vbus,
Hema HK002eda12011-02-17 12:06:10 +0530365
366 .enable = omap2430_musb_enable,
367 .disable = omap2430_musb_disable,
Tony Lindgren80555552015-11-30 21:37:12 -0800368
369 .phy_callback = omap2430_musb_mailbox,
Felipe Balbi743411b2010-12-01 13:22:05 +0200370};
Felipe Balbidc098862010-12-01 15:01:11 +0200371
372static u64 omap2430_dmamask = DMA_BIT_MASK(32);
373
Bill Pemberton41ac7b32012-11-19 13:21:48 -0500374static int omap2430_probe(struct platform_device *pdev)
Felipe Balbidc098862010-12-01 15:01:11 +0200375{
Kishon Vijay Abraham Ic1f01be2013-07-17 10:51:22 +0300376 struct resource musb_resources[3];
Jingoo Hanc1a7d672013-07-30 17:03:12 +0900377 struct musb_hdrc_platform_data *pdata = dev_get_platdata(&pdev->dev);
Kishon Vijay Abraham I00a0b1d2012-09-11 14:39:40 +0530378 struct omap_musb_board_data *data;
Felipe Balbidc098862010-12-01 15:01:11 +0200379 struct platform_device *musb;
Felipe Balbia3cee122010-12-02 09:27:29 +0200380 struct omap2430_glue *glue;
Kishon Vijay Abraham I00a0b1d2012-09-11 14:39:40 +0530381 struct device_node *np = pdev->dev.of_node;
382 struct musb_hdrc_config *config;
Johan Hovold5ee17872018-04-18 11:26:22 +0200383 struct device_node *control_node;
384 struct platform_device *control_pdev;
Tony Lindgren606bf4d2015-02-04 06:28:49 -0800385 int ret = -ENOMEM, val;
Felipe Balbidc098862010-12-01 15:01:11 +0200386
Johan Hovold5ee17872018-04-18 11:26:22 +0200387 if (!np)
388 return -ENODEV;
389
Kishon Vijay Abraham Ib1183c22012-06-22 17:40:54 +0530390 glue = devm_kzalloc(&pdev->dev, sizeof(*glue), GFP_KERNEL);
Peter Chenaf1bdfc2014-10-14 15:56:08 +0800391 if (!glue)
Felipe Balbia3cee122010-12-02 09:27:29 +0200392 goto err0;
Felipe Balbia3cee122010-12-02 09:27:29 +0200393
Sebastian Andrzej Siewior2f771162012-10-31 16:12:43 +0100394 musb = platform_device_alloc("musb-hdrc", PLATFORM_DEVID_AUTO);
395 if (!musb) {
396 dev_err(&pdev->dev, "failed to allocate musb device\n");
Kishon Vijay Abraham Ib1183c22012-06-22 17:40:54 +0530397 goto err0;
Felipe Balbidc098862010-12-01 15:01:11 +0200398 }
399
400 musb->dev.parent = &pdev->dev;
401 musb->dev.dma_mask = &omap2430_dmamask;
402 musb->dev.coherent_dma_mask = omap2430_dmamask;
403
Felipe Balbia3cee122010-12-02 09:27:29 +0200404 glue->dev = &pdev->dev;
405 glue->musb = musb;
Tony Lindgren80555552015-11-30 21:37:12 -0800406 glue->status = MUSB_UNKNOWN;
Roger Quadros8934d3e2013-10-03 18:12:34 +0300407 glue->control_otghs = ERR_PTR(-ENODEV);
Felipe Balbia3cee122010-12-02 09:27:29 +0200408
Johan Hovold5ee17872018-04-18 11:26:22 +0200409 pdata = devm_kzalloc(&pdev->dev, sizeof(*pdata), GFP_KERNEL);
410 if (!pdata)
411 goto err2;
Roger Quadros8934d3e2013-10-03 18:12:34 +0300412
Johan Hovold5ee17872018-04-18 11:26:22 +0200413 data = devm_kzalloc(&pdev->dev, sizeof(*data), GFP_KERNEL);
414 if (!data)
415 goto err2;
416
417 config = devm_kzalloc(&pdev->dev, sizeof(*config), GFP_KERNEL);
418 if (!config)
419 goto err2;
420
421 of_property_read_u32(np, "mode", (u32 *)&pdata->mode);
422 of_property_read_u32(np, "interface-type",
423 (u32 *)&data->interface_type);
424 of_property_read_u32(np, "num-eps", (u32 *)&config->num_eps);
425 of_property_read_u32(np, "ram-bits", (u32 *)&config->ram_bits);
426 of_property_read_u32(np, "power", (u32 *)&pdata->power);
427
428 ret = of_property_read_u32(np, "multipoint", &val);
429 if (!ret && val)
430 config->multipoint = true;
431
432 pdata->board_data = data;
433 pdata->config = config;
434
435 control_node = of_parse_phandle(np, "ctrl-module", 0);
436 if (control_node) {
437 control_pdev = of_find_device_by_node(control_node);
438 if (!control_pdev) {
439 dev_err(&pdev->dev, "Failed to get control device\n");
440 ret = -EINVAL;
Sebastian Andrzej Siewior2f771162012-10-31 16:12:43 +0100441 goto err2;
Kishon Vijay Abraham Ica784be2013-01-25 15:54:00 +0530442 }
Johan Hovold5ee17872018-04-18 11:26:22 +0200443 glue->control_otghs = &control_pdev->dev;
Kishon Vijay Abraham Ica784be2013-01-25 15:54:00 +0530444 }
Johan Hovold5ee17872018-04-18 11:26:22 +0200445
Felipe Balbif7ec9432010-12-02 09:48:58 +0200446 pdata->platform_ops = &omap2430_ops;
447
Felipe Balbia3cee122010-12-02 09:27:29 +0200448 platform_set_drvdata(pdev, glue);
Felipe Balbidc098862010-12-01 15:01:11 +0200449
Kishon Vijay Abraham Ic9721432012-06-22 17:40:52 +0530450 /*
451 * REVISIT if we ever have two instances of the wrapper, we will be
452 * in big trouble
453 */
454 _glue = glue;
455
Kishon Vijay Abraham I1e5acb82012-06-22 17:40:51 +0530456 INIT_WORK(&glue->omap_musb_mailbox_work, omap_musb_mailbox_work);
457
Sebastian Andrzej Siewior3a0ddc72013-06-25 09:41:02 +0200458 memset(musb_resources, 0x00, sizeof(*musb_resources) *
Felipe Balbi09fc7d22013-04-24 17:21:42 +0300459 ARRAY_SIZE(musb_resources));
460
461 musb_resources[0].name = pdev->resource[0].name;
462 musb_resources[0].start = pdev->resource[0].start;
463 musb_resources[0].end = pdev->resource[0].end;
464 musb_resources[0].flags = pdev->resource[0].flags;
465
466 musb_resources[1].name = pdev->resource[1].name;
467 musb_resources[1].start = pdev->resource[1].start;
468 musb_resources[1].end = pdev->resource[1].end;
469 musb_resources[1].flags = pdev->resource[1].flags;
470
Kishon Vijay Abraham Ic1f01be2013-07-17 10:51:22 +0300471 musb_resources[2].name = pdev->resource[2].name;
472 musb_resources[2].start = pdev->resource[2].start;
473 musb_resources[2].end = pdev->resource[2].end;
474 musb_resources[2].flags = pdev->resource[2].flags;
475
Felipe Balbi09fc7d22013-04-24 17:21:42 +0300476 ret = platform_device_add_resources(musb, musb_resources,
477 ARRAY_SIZE(musb_resources));
Felipe Balbidc098862010-12-01 15:01:11 +0200478 if (ret) {
479 dev_err(&pdev->dev, "failed to add resources\n");
B, Ravi65b3d522012-08-31 11:09:49 +0000480 goto err2;
Felipe Balbidc098862010-12-01 15:01:11 +0200481 }
482
483 ret = platform_device_add_data(musb, pdata, sizeof(*pdata));
484 if (ret) {
485 dev_err(&pdev->dev, "failed to add platform_data\n");
B, Ravi65b3d522012-08-31 11:09:49 +0000486 goto err2;
Felipe Balbidc098862010-12-01 15:01:11 +0200487 }
488
Tony Lindgren87326e82016-05-31 10:05:20 -0500489 pm_runtime_enable(glue->dev);
Kishon Vijay Abraham I3006dc82012-03-21 21:30:20 +0530490
Felipe Balbidc098862010-12-01 15:01:11 +0200491 ret = platform_device_add(musb);
492 if (ret) {
493 dev_err(&pdev->dev, "failed to register musb device\n");
Tony Lindgren536d5992016-11-16 13:21:25 -0600494 goto err3;
Felipe Balbidc098862010-12-01 15:01:11 +0200495 }
496
497 return 0;
498
Tony Lindgren536d5992016-11-16 13:21:25 -0600499err3:
500 pm_runtime_disable(glue->dev);
501
B, Ravi65b3d522012-08-31 11:09:49 +0000502err2:
Kishon Vijay Abraham Ib1183c22012-06-22 17:40:54 +0530503 platform_device_put(musb);
Felipe Balbia3cee122010-12-02 09:27:29 +0200504
Felipe Balbidc098862010-12-01 15:01:11 +0200505err0:
506 return ret;
507}
508
Bill Pembertonfb4e98a2012-11-19 13:26:20 -0500509static int omap2430_remove(struct platform_device *pdev)
Felipe Balbidc098862010-12-01 15:01:11 +0200510{
Tony Lindgren21f77be2016-05-31 10:05:15 -0500511 struct omap2430_glue *glue = platform_get_drvdata(pdev);
Felipe Balbidc098862010-12-01 15:01:11 +0200512
Kishon Vijay Abraham If039df52012-08-02 15:30:07 +0530513 platform_device_unregister(glue->musb);
Tony Lindgren03e43522015-11-30 21:37:13 -0800514 pm_runtime_disable(glue->dev);
Felipe Balbidc098862010-12-01 15:01:11 +0200515
516 return 0;
517}
518
Felipe Balbic20aebb2010-12-02 12:44:40 +0200519#ifdef CONFIG_PM
Felipe Balbic20aebb2010-12-02 12:44:40 +0200520
Hema HK7acc6192011-02-28 14:19:34 +0530521static int omap2430_runtime_suspend(struct device *dev)
Felipe Balbic20aebb2010-12-02 12:44:40 +0200522{
523 struct omap2430_glue *glue = dev_get_drvdata(dev);
524 struct musb *musb = glue_to_musb(glue);
525
Tony Lindgrena83e17d2016-05-31 10:05:16 -0500526 if (!musb)
527 return 0;
Hema HKe25bec12011-09-07 09:19:24 -0700528
Tony Lindgrena83e17d2016-05-31 10:05:16 -0500529 musb->context.otg_interfsel = musb_readl(musb->mregs,
530 OTG_INTERFSEL);
531
532 omap2430_low_level_exit(musb);
Felipe Balbic20aebb2010-12-02 12:44:40 +0200533
534 return 0;
535}
536
Hema HK7acc6192011-02-28 14:19:34 +0530537static int omap2430_runtime_resume(struct device *dev)
Felipe Balbic20aebb2010-12-02 12:44:40 +0200538{
539 struct omap2430_glue *glue = dev_get_drvdata(dev);
540 struct musb *musb = glue_to_musb(glue);
Felipe Balbic20aebb2010-12-02 12:44:40 +0200541
Tony Lindgren8f2279d2015-10-28 10:16:04 -0700542 if (!musb)
Tony Lindgrena83e17d2016-05-31 10:05:16 -0500543 return 0;
Tony Lindgren8f2279d2015-10-28 10:16:04 -0700544
545 omap2430_low_level_init(musb);
546 musb_writel(musb->mregs, OTG_INTERFSEL,
547 musb->context.otg_interfsel);
Felipe Balbic20aebb2010-12-02 12:44:40 +0200548
549 return 0;
550}
551
Bhumika Goyalc0927fe2017-02-01 21:30:26 -0600552static const struct dev_pm_ops omap2430_pm_ops = {
Hema HK7acc6192011-02-28 14:19:34 +0530553 .runtime_suspend = omap2430_runtime_suspend,
554 .runtime_resume = omap2430_runtime_resume,
Felipe Balbic20aebb2010-12-02 12:44:40 +0200555};
556
557#define DEV_PM_OPS (&omap2430_pm_ops)
558#else
559#define DEV_PM_OPS NULL
560#endif
561
Kishon Vijay Abraham I00a0b1d2012-09-11 14:39:40 +0530562#ifdef CONFIG_OF
563static const struct of_device_id omap2430_id_table[] = {
564 {
565 .compatible = "ti,omap4-musb"
566 },
567 {
568 .compatible = "ti,omap3-musb"
569 },
570 {},
571};
572MODULE_DEVICE_TABLE(of, omap2430_id_table);
573#endif
574
Felipe Balbidc098862010-12-01 15:01:11 +0200575static struct platform_driver omap2430_driver = {
Felipe Balbie9e8c852012-01-26 12:40:23 +0200576 .probe = omap2430_probe,
Bill Pemberton76904172012-11-19 13:21:08 -0500577 .remove = omap2430_remove,
Felipe Balbidc098862010-12-01 15:01:11 +0200578 .driver = {
579 .name = "musb-omap2430",
Felipe Balbic20aebb2010-12-02 12:44:40 +0200580 .pm = DEV_PM_OPS,
Kishon Vijay Abraham I00a0b1d2012-09-11 14:39:40 +0530581 .of_match_table = of_match_ptr(omap2430_id_table),
Felipe Balbidc098862010-12-01 15:01:11 +0200582 },
583};
584
Tony Lindgrenaec373c2016-05-31 10:05:22 -0500585module_platform_driver(omap2430_driver);
586
Felipe Balbidc098862010-12-01 15:01:11 +0200587MODULE_DESCRIPTION("OMAP2PLUS MUSB Glue Layer");
588MODULE_AUTHOR("Felipe Balbi <balbi@ti.com>");
589MODULE_LICENSE("GPL v2");