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Felipe Balbi550a7372008-07-24 12:27:36 +03001/*
2 * Copyright (C) 2005-2007 by Texas Instruments
3 * Some code has been taken from tusb6010.c
4 * Copyrights for that are attributable to:
5 * Copyright (C) 2006 Nokia Corporation
Felipe Balbi550a7372008-07-24 12:27:36 +03006 * Tony Lindgren <tony@atomide.com>
7 *
8 * This file is part of the Inventra Controller Driver for Linux.
9 *
10 * The Inventra Controller Driver for Linux is free software; you
11 * can redistribute it and/or modify it under the terms of the GNU
12 * General Public License version 2 as published by the Free Software
13 * Foundation.
14 *
15 * The Inventra Controller Driver for Linux is distributed in
16 * the hope that it will be useful, but WITHOUT ANY WARRANTY;
17 * without even the implied warranty of MERCHANTABILITY or
18 * FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public
19 * License for more details.
20 *
21 * You should have received a copy of the GNU General Public License
22 * along with The Inventra Controller Driver for Linux ; if not,
23 * write to the Free Software Foundation, Inc., 59 Temple Place,
24 * Suite 330, Boston, MA 02111-1307 USA
25 *
26 */
27#include <linux/module.h>
28#include <linux/kernel.h>
29#include <linux/sched.h>
Felipe Balbi550a7372008-07-24 12:27:36 +030030#include <linux/init.h>
31#include <linux/list.h>
Felipe Balbi550a7372008-07-24 12:27:36 +030032#include <linux/io.h>
Kishon Vijay Abraham I00a0b1d2012-09-11 14:39:40 +053033#include <linux/of.h>
Felipe Balbidc098862010-12-01 15:01:11 +020034#include <linux/platform_device.h>
35#include <linux/dma-mapping.h>
Hema HK207b0e12011-02-17 12:07:22 +053036#include <linux/pm_runtime.h>
37#include <linux/err.h>
NeilBrown12a19b52012-08-13 12:32:58 +100038#include <linux/delay.h>
Tony Lindgren80555552015-11-30 21:37:12 -080039#include <linux/usb/musb.h>
Kishon Vijay Abraham I14da6992014-03-06 16:38:37 +020040#include <linux/phy/omap_control_phy.h>
Roger Quadros8934d3e2013-10-03 18:12:34 +030041#include <linux/of_platform.h>
Felipe Balbi550a7372008-07-24 12:27:36 +030042
Felipe Balbi550a7372008-07-24 12:27:36 +030043#include "musb_core.h"
44#include "omap2430.h"
45
Felipe Balbia3cee122010-12-02 09:27:29 +020046struct omap2430_glue {
47 struct device *dev;
48 struct platform_device *musb;
Tony Lindgren80555552015-11-30 21:37:12 -080049 enum musb_vbus_id_status status;
Kishon Vijay Abraham I1e5acb82012-06-22 17:40:51 +053050 struct work_struct omap_musb_mailbox_work;
Kishon Vijay Abraham Ica784be2013-01-25 15:54:00 +053051 struct device *control_otghs;
Tony Lindgren21f77be2016-05-31 10:05:15 -050052 bool cable_connected;
53 bool enabled;
54 bool powered;
Felipe Balbia3cee122010-12-02 09:27:29 +020055};
Felipe Balbic20aebb2010-12-02 12:44:40 +020056#define glue_to_musb(g) platform_get_drvdata(g->musb)
Felipe Balbia3cee122010-12-02 09:27:29 +020057
Aaro Koskinen4b58ed12013-03-05 13:04:24 +020058static struct omap2430_glue *_glue;
Kishon Vijay Abraham Ic9721432012-06-22 17:40:52 +053059
Felipe Balbi743411b2010-12-01 13:22:05 +020060static void omap2430_musb_set_vbus(struct musb *musb, int is_on)
Felipe Balbi550a7372008-07-24 12:27:36 +030061{
Heikki Krogerusd445b6d2012-02-13 13:24:15 +020062 struct usb_otg *otg = musb->xceiv->otg;
Felipe Balbi550a7372008-07-24 12:27:36 +030063 u8 devctl;
Hema HK594632e2010-12-10 18:10:51 +053064 unsigned long timeout = jiffies + msecs_to_jiffies(1000);
Felipe Balbi550a7372008-07-24 12:27:36 +030065 /* HDRC controls CPEN, but beware current surges during device
66 * connect. They can trigger transient overcurrent conditions
67 * that must be ignored.
68 */
69
70 devctl = musb_readb(musb->mregs, MUSB_DEVCTL);
71
72 if (is_on) {
Antoine Tenarte47d9252014-10-30 18:41:13 +010073 if (musb->xceiv->otg->state == OTG_STATE_A_IDLE) {
NeilBrown12a19b52012-08-13 12:32:58 +100074 int loops = 100;
Hema HK594632e2010-12-10 18:10:51 +053075 /* start the session */
76 devctl |= MUSB_DEVCTL_SESSION;
77 musb_writeb(musb->mregs, MUSB_DEVCTL, devctl);
78 /*
79 * Wait for the musb to set as A device to enable the
80 * VBUS
81 */
Sergei Shtylyov5a805302014-10-24 00:34:12 +040082 while (musb_readb(musb->mregs, MUSB_DEVCTL) &
83 MUSB_DEVCTL_BDEVICE) {
Felipe Balbi550a7372008-07-24 12:27:36 +030084
NeilBrown12a19b52012-08-13 12:32:58 +100085 mdelay(5);
Hema HK594632e2010-12-10 18:10:51 +053086 cpu_relax();
87
NeilBrown12a19b52012-08-13 12:32:58 +100088 if (time_after(jiffies, timeout)
89 || loops-- <= 0) {
Hema HK594632e2010-12-10 18:10:51 +053090 dev_err(musb->controller,
91 "configured as A device timeout");
Hema HK594632e2010-12-10 18:10:51 +053092 break;
93 }
94 }
95
Kishon Vijay Abraham Ibb467cf2013-03-14 11:53:56 +053096 otg_set_vbus(otg, 1);
Hema HK594632e2010-12-10 18:10:51 +053097 } else {
98 musb->is_active = 1;
Heikki Krogerusd445b6d2012-02-13 13:24:15 +020099 otg->default_a = 1;
Antoine Tenarte47d9252014-10-30 18:41:13 +0100100 musb->xceiv->otg->state = OTG_STATE_A_WAIT_VRISE;
Hema HK594632e2010-12-10 18:10:51 +0530101 devctl |= MUSB_DEVCTL_SESSION;
102 MUSB_HST_MODE(musb);
103 }
Felipe Balbi550a7372008-07-24 12:27:36 +0300104 } else {
105 musb->is_active = 0;
106
107 /* NOTE: we're skipping A_WAIT_VFALL -> A_IDLE and
108 * jumping right to B_IDLE...
109 */
110
Heikki Krogerusd445b6d2012-02-13 13:24:15 +0200111 otg->default_a = 0;
Antoine Tenarte47d9252014-10-30 18:41:13 +0100112 musb->xceiv->otg->state = OTG_STATE_B_IDLE;
Felipe Balbi550a7372008-07-24 12:27:36 +0300113 devctl &= ~MUSB_DEVCTL_SESSION;
114
115 MUSB_DEV_MODE(musb);
116 }
117 musb_writeb(musb->mregs, MUSB_DEVCTL, devctl);
118
Felipe Balbi5c8a86e2011-05-11 12:44:08 +0300119 dev_dbg(musb->controller, "VBUS %s, devctl %02x "
Felipe Balbi550a7372008-07-24 12:27:36 +0300120 /* otg %3x conf %08x prcm %08x */ "\n",
Antoine Tenarte47d9252014-10-30 18:41:13 +0100121 usb_otg_state_string(musb->xceiv->otg->state),
Felipe Balbi550a7372008-07-24 12:27:36 +0300122 musb_readb(musb->mregs, MUSB_DEVCTL));
123}
Felipe Balbi550a7372008-07-24 12:27:36 +0300124
Felipe Balbic20aebb2010-12-02 12:44:40 +0200125static inline void omap2430_low_level_exit(struct musb *musb)
126{
127 u32 l;
128
129 /* in any role */
130 l = musb_readl(musb->mregs, OTG_FORCESTDBY);
131 l |= ENABLEFORCE; /* enable MSTANDBY */
132 musb_writel(musb->mregs, OTG_FORCESTDBY, l);
Felipe Balbic20aebb2010-12-02 12:44:40 +0200133}
134
135static inline void omap2430_low_level_init(struct musb *musb)
136{
137 u32 l;
138
Felipe Balbic20aebb2010-12-02 12:44:40 +0200139 l = musb_readl(musb->mregs, OTG_FORCESTDBY);
140 l &= ~ENABLEFORCE; /* disable MSTANDBY */
141 musb_writel(musb->mregs, OTG_FORCESTDBY, l);
142}
143
Tony Lindgren21f77be2016-05-31 10:05:15 -0500144/*
145 * We can get multiple cable events so we need to keep track
146 * of the power state. Only keep power enabled if USB cable is
147 * connected and a gadget is started.
148 */
149static void omap2430_set_power(struct musb *musb, bool enabled, bool cable)
150{
151 struct device *dev = musb->controller;
152 struct omap2430_glue *glue = dev_get_drvdata(dev->parent);
153 bool power_up;
154 int res;
155
156 if (glue->enabled != enabled)
157 glue->enabled = enabled;
158
159 if (glue->cable_connected != cable)
160 glue->cable_connected = cable;
161
162 power_up = glue->enabled && glue->cable_connected;
163 if (power_up == glue->powered) {
164 dev_warn(musb->controller, "power state already %i\n",
165 power_up);
166 return;
167 }
168
169 glue->powered = power_up;
170
171 if (power_up) {
172 res = pm_runtime_get_sync(musb->controller);
173 if (res < 0) {
174 dev_err(musb->controller, "could not enable: %i", res);
175 glue->powered = false;
176 }
177 } else {
178 pm_runtime_mark_last_busy(musb->controller);
179 pm_runtime_put_autosuspend(musb->controller);
180 }
181}
182
Tony Lindgren12b7db22016-05-31 10:05:19 -0500183static int omap2430_musb_mailbox(enum musb_vbus_id_status status)
Hema HK594632e2010-12-10 18:10:51 +0530184{
Kishon Vijay Abraham Ic9721432012-06-22 17:40:52 +0530185 struct omap2430_glue *glue = _glue;
Vikram Pandita712d8ef2011-08-12 07:38:51 -0700186
Aaro Koskinenf8c4b0e2013-03-05 13:04:23 +0200187 if (!glue) {
188 pr_err("%s: musb core is not yet initialized\n", __func__);
Tony Lindgren12b7db22016-05-31 10:05:19 -0500189 return -EPROBE_DEFER;
Aaro Koskinenf8c4b0e2013-03-05 13:04:23 +0200190 }
191 glue->status = status;
192
193 if (!glue_to_musb(glue)) {
Aaro Koskinen80ab72e2012-12-23 01:24:51 +0200194 pr_err("%s: musb core is not yet ready\n", __func__);
Tony Lindgren12b7db22016-05-31 10:05:19 -0500195 return -EPROBE_DEFER;
Kishon Vijay Abraham Ic9721432012-06-22 17:40:52 +0530196 }
197
Kishon Vijay Abraham I1e5acb82012-06-22 17:40:51 +0530198 schedule_work(&glue->omap_musb_mailbox_work);
Tony Lindgren12b7db22016-05-31 10:05:19 -0500199
200 return 0;
Vikram Pandita712d8ef2011-08-12 07:38:51 -0700201}
202
Kishon Vijay Abraham Ic9721432012-06-22 17:40:52 +0530203static void omap_musb_set_mailbox(struct omap2430_glue *glue)
Vikram Pandita712d8ef2011-08-12 07:38:51 -0700204{
Kishon Vijay Abraham I1e5acb82012-06-22 17:40:51 +0530205 struct musb *musb = glue_to_musb(glue);
Hema HK594632e2010-12-10 18:10:51 +0530206 struct device *dev = musb->controller;
Jingoo Hanc1a7d672013-07-30 17:03:12 +0900207 struct musb_hdrc_platform_data *pdata = dev_get_platdata(dev);
Hema HK594632e2010-12-10 18:10:51 +0530208 struct omap_musb_board_data *data = pdata->board_data;
Kishon Vijay Abraham Ic83a8542012-06-22 17:40:53 +0530209 struct usb_otg *otg = musb->xceiv->otg;
Tony Lindgren21f77be2016-05-31 10:05:15 -0500210 bool cable_connected;
211
212 cable_connected = ((glue->status == MUSB_ID_GROUND) ||
213 (glue->status == MUSB_VBUS_VALID));
214
215 if (cable_connected)
216 omap2430_set_power(musb, glue->enabled, cable_connected);
Hema HK594632e2010-12-10 18:10:51 +0530217
Kishon Vijay Abraham Ic9721432012-06-22 17:40:52 +0530218 switch (glue->status) {
Tony Lindgren80555552015-11-30 21:37:12 -0800219 case MUSB_ID_GROUND:
Kishon Vijay Abraham Ic9721432012-06-22 17:40:52 +0530220 dev_dbg(dev, "ID GND\n");
Hema HK594632e2010-12-10 18:10:51 +0530221
Kishon Vijay Abraham Ic83a8542012-06-22 17:40:53 +0530222 otg->default_a = true;
Antoine Tenarte47d9252014-10-30 18:41:13 +0100223 musb->xceiv->otg->state = OTG_STATE_A_IDLE;
Kishon Vijay Abraham Ic9721432012-06-22 17:40:52 +0530224 musb->xceiv->last_event = USB_EVENT_ID;
Felipe Balbi032ec492011-11-24 15:46:26 +0200225 if (musb->gadget_driver) {
Kishon Vijay Abraham Ica784be2013-01-25 15:54:00 +0530226 omap_control_usb_set_mode(glue->control_otghs,
227 USB_MODE_HOST);
Hema HK70045c52011-02-28 15:05:29 +0530228 omap2430_musb_set_vbus(musb, 1);
Hema HK594632e2010-12-10 18:10:51 +0530229 }
230 break;
231
Tony Lindgren80555552015-11-30 21:37:12 -0800232 case MUSB_VBUS_VALID:
Kishon Vijay Abraham Ic9721432012-06-22 17:40:52 +0530233 dev_dbg(dev, "VBUS Connect\n");
Hema HK594632e2010-12-10 18:10:51 +0530234
Kishon Vijay Abraham Ic83a8542012-06-22 17:40:53 +0530235 otg->default_a = false;
Antoine Tenarte47d9252014-10-30 18:41:13 +0100236 musb->xceiv->otg->state = OTG_STATE_B_IDLE;
Kishon Vijay Abraham Ic9721432012-06-22 17:40:52 +0530237 musb->xceiv->last_event = USB_EVENT_VBUS;
Kishon Vijay Abraham Ica784be2013-01-25 15:54:00 +0530238 omap_control_usb_set_mode(glue->control_otghs, USB_MODE_DEVICE);
Hema HK594632e2010-12-10 18:10:51 +0530239 break;
240
Tony Lindgren80555552015-11-30 21:37:12 -0800241 case MUSB_ID_FLOAT:
242 case MUSB_VBUS_OFF:
Kishon Vijay Abraham Ic9721432012-06-22 17:40:52 +0530243 dev_dbg(dev, "VBUS Disconnect\n");
Hema HK594632e2010-12-10 18:10:51 +0530244
Kishon Vijay Abraham Ic9721432012-06-22 17:40:52 +0530245 musb->xceiv->last_event = USB_EVENT_NONE;
Tony Lindgren21f77be2016-05-31 10:05:15 -0500246 if (musb->gadget_driver)
Grazvydas Ignotas2c1fe892013-03-24 17:36:54 +0200247 omap2430_musb_set_vbus(musb, 0);
Hema HK7acc6192011-02-28 14:19:34 +0530248
Kishon Vijay Abraham Ibb467cf2013-03-14 11:53:56 +0530249 if (data->interface_type == MUSB_INTERFACE_UTMI)
250 otg_set_vbus(musb->xceiv->otg, 0);
251
Kishon Vijay Abraham Ica784be2013-01-25 15:54:00 +0530252 omap_control_usb_set_mode(glue->control_otghs,
253 USB_MODE_DISCONNECT);
Hema HK594632e2010-12-10 18:10:51 +0530254 break;
255 default:
Kishon Vijay Abraham Ic9721432012-06-22 17:40:52 +0530256 dev_dbg(dev, "ID float\n");
Hema HK594632e2010-12-10 18:10:51 +0530257 }
Pali Rohár6fa71782013-09-18 19:03:34 +0200258
Tony Lindgren21f77be2016-05-31 10:05:15 -0500259 if (!cable_connected)
260 omap2430_set_power(musb, glue->enabled, cable_connected);
261
Pali Rohár6fa71782013-09-18 19:03:34 +0200262 atomic_notifier_call_chain(&musb->xceiv->notifier,
263 musb->xceiv->last_event, NULL);
Hema HK594632e2010-12-10 18:10:51 +0530264}
265
Kishon Vijay Abraham Ic9721432012-06-22 17:40:52 +0530266
267static void omap_musb_mailbox_work(struct work_struct *mailbox_work)
268{
269 struct omap2430_glue *glue = container_of(mailbox_work,
270 struct omap2430_glue, omap_musb_mailbox_work);
Felipe Balbi8b2bc2c2014-04-07 10:58:01 -0500271
Kishon Vijay Abraham Ic9721432012-06-22 17:40:52 +0530272 omap_musb_set_mailbox(glue);
273}
274
Philippe De Swertbaef6532012-11-06 15:32:13 +0200275static irqreturn_t omap2430_musb_interrupt(int irq, void *__hci)
276{
277 unsigned long flags;
278 irqreturn_t retval = IRQ_NONE;
279 struct musb *musb = __hci;
280
281 spin_lock_irqsave(&musb->lock, flags);
282
283 musb->int_usb = musb_readb(musb->mregs, MUSB_INTRUSB);
284 musb->int_tx = musb_readw(musb->mregs, MUSB_INTRTX);
285 musb->int_rx = musb_readw(musb->mregs, MUSB_INTRRX);
286
287 if (musb->int_usb || musb->int_tx || musb->int_rx)
288 retval = musb_interrupt(musb);
289
290 spin_unlock_irqrestore(&musb->lock, flags);
291
292 return retval;
293}
294
Felipe Balbi743411b2010-12-01 13:22:05 +0200295static int omap2430_musb_init(struct musb *musb)
Felipe Balbi550a7372008-07-24 12:27:36 +0300296{
Shubhrajyoti Dad579692012-03-22 12:48:06 +0530297 u32 l;
298 int status = 0;
Hema Kalliguddiea65df52010-09-22 19:27:40 -0500299 struct device *dev = musb->controller;
Kishon Vijay Abraham Ic9721432012-06-22 17:40:52 +0530300 struct omap2430_glue *glue = dev_get_drvdata(dev->parent);
Jingoo Hanc1a7d672013-07-30 17:03:12 +0900301 struct musb_hdrc_platform_data *plat = dev_get_platdata(dev);
Hema Kalliguddiea65df52010-09-22 19:27:40 -0500302 struct omap_musb_board_data *data = plat->board_data;
Felipe Balbi550a7372008-07-24 12:27:36 +0300303
David Brownell84e250f2009-03-31 12:30:04 -0700304 /* We require some kind of external transceiver, hooked
305 * up through ULPI. TWL4030-family PMICs include one,
306 * which needs a driver, drivers aren't always needed.
307 */
Kishon Vijay Abraham I3e3101d2013-09-27 11:53:30 +0530308 if (dev->parent->of_node) {
309 musb->phy = devm_phy_get(dev->parent, "usb2-phy");
310
311 /* We can't totally remove musb->xceiv as of now because
312 * musb core uses xceiv.state and xceiv.otg. Once we have
313 * a separate state machine to handle otg, these can be moved
314 * out of xceiv and then we can start using the generic PHY
315 * framework
316 */
Kishon Vijay Abraham Ib16604f2013-01-25 08:03:26 +0530317 musb->xceiv = devm_usb_get_phy_by_phandle(dev->parent,
318 "usb-phy", 0);
Kishon Vijay Abraham I3e3101d2013-09-27 11:53:30 +0530319 } else {
Kishon Vijay Abraham Ib16604f2013-01-25 08:03:26 +0530320 musb->xceiv = devm_usb_get_phy_dev(dev, 0);
Kishon Vijay Abraham I3e3101d2013-09-27 11:53:30 +0530321 musb->phy = devm_phy_get(dev, "usb");
322 }
Kishon Vijay Abraham Ib16604f2013-01-25 08:03:26 +0530323
Felipe Balbia90199b2013-03-15 10:57:40 +0200324 if (IS_ERR(musb->xceiv)) {
325 status = PTR_ERR(musb->xceiv);
326
327 if (status == -ENXIO)
328 return status;
329
David Brownell84e250f2009-03-31 12:30:04 -0700330 pr_err("HS USB OTG: no transceiver configured\n");
Ming Lei25736e02013-01-04 23:13:58 +0800331 return -EPROBE_DEFER;
David Brownell84e250f2009-03-31 12:30:04 -0700332 }
333
Kishon Vijay Abraham I3e3101d2013-09-27 11:53:30 +0530334 if (IS_ERR(musb->phy)) {
335 pr_err("HS USB OTG: no PHY configured\n");
336 return PTR_ERR(musb->phy);
337 }
Philippe De Swertbaef6532012-11-06 15:32:13 +0200338 musb->isr = omap2430_musb_interrupt;
Tony Lindgrena83e17d2016-05-31 10:05:16 -0500339 phy_init(musb->phy);
Philippe De Swertbaef6532012-11-06 15:32:13 +0200340
Felipe Balbi8573e6a2010-01-21 15:33:53 +0200341 l = musb_readl(musb->mregs, OTG_INTERFSEL);
Maulik Mankadde2e1b02010-03-12 10:29:07 +0200342
343 if (data->interface_type == MUSB_INTERFACE_UTMI) {
344 /* OMAP4 uses Internal PHY GS70 which uses UTMI interface */
345 l &= ~ULPI_12PIN; /* Disable ULPI */
346 l |= UTMI_8BIT; /* Enable UTMI */
347 } else {
348 l |= ULPI_12PIN;
349 }
350
Felipe Balbi8573e6a2010-01-21 15:33:53 +0200351 musb_writel(musb->mregs, OTG_INTERFSEL, l);
Felipe Balbi550a7372008-07-24 12:27:36 +0300352
353 pr_debug("HS USB OTG: revision 0x%x, sysconfig 0x%02x, "
354 "sysstatus 0x%x, intrfsel 0x%x, simenable 0x%x\n",
Felipe Balbi8573e6a2010-01-21 15:33:53 +0200355 musb_readl(musb->mregs, OTG_REVISION),
356 musb_readl(musb->mregs, OTG_SYSCONFIG),
357 musb_readl(musb->mregs, OTG_SYSSTATUS),
358 musb_readl(musb->mregs, OTG_INTERFSEL),
359 musb_readl(musb->mregs, OTG_SIMENABLE));
Felipe Balbi550a7372008-07-24 12:27:36 +0300360
Tony Lindgren80555552015-11-30 21:37:12 -0800361 if (glue->status != MUSB_UNKNOWN)
Kishon Vijay Abraham Ic9721432012-06-22 17:40:52 +0530362 omap_musb_set_mailbox(glue);
363
Felipe Balbi550a7372008-07-24 12:27:36 +0300364 return 0;
365}
366
Hema HK002eda12011-02-17 12:06:10 +0530367static void omap2430_musb_enable(struct musb *musb)
368{
369 u8 devctl;
370 unsigned long timeout = jiffies + msecs_to_jiffies(1000);
371 struct device *dev = musb->controller;
Kishon Vijay Abraham Ic9721432012-06-22 17:40:52 +0530372 struct omap2430_glue *glue = dev_get_drvdata(dev->parent);
Jingoo Hanc1a7d672013-07-30 17:03:12 +0900373 struct musb_hdrc_platform_data *pdata = dev_get_platdata(dev);
Hema HK002eda12011-02-17 12:06:10 +0530374 struct omap_musb_board_data *data = pdata->board_data;
375
Tony Lindgrena83e17d2016-05-31 10:05:16 -0500376 if (!WARN_ON(!musb->phy))
377 phy_power_on(musb->phy);
378
Tony Lindgren21f77be2016-05-31 10:05:15 -0500379 omap2430_set_power(musb, true, glue->cable_connected);
380
Kishon Vijay Abraham Ic9721432012-06-22 17:40:52 +0530381 switch (glue->status) {
Hema HK002eda12011-02-17 12:06:10 +0530382
Tony Lindgren80555552015-11-30 21:37:12 -0800383 case MUSB_ID_GROUND:
Kishon Vijay Abraham Ica784be2013-01-25 15:54:00 +0530384 omap_control_usb_set_mode(glue->control_otghs, USB_MODE_HOST);
Felipe Contreras08dec562011-12-19 22:17:50 +0200385 if (data->interface_type != MUSB_INTERFACE_UTMI)
386 break;
387 devctl = musb_readb(musb->mregs, MUSB_DEVCTL);
388 /* start the session */
389 devctl |= MUSB_DEVCTL_SESSION;
390 musb_writeb(musb->mregs, MUSB_DEVCTL, devctl);
391 while (musb_readb(musb->mregs, MUSB_DEVCTL) &
392 MUSB_DEVCTL_BDEVICE) {
393 cpu_relax();
Hema HK002eda12011-02-17 12:06:10 +0530394
Felipe Contreras08dec562011-12-19 22:17:50 +0200395 if (time_after(jiffies, timeout)) {
396 dev_err(dev, "configured as A device timeout");
397 break;
Hema HK002eda12011-02-17 12:06:10 +0530398 }
399 }
400 break;
401
Tony Lindgren80555552015-11-30 21:37:12 -0800402 case MUSB_VBUS_VALID:
Kishon Vijay Abraham Ica784be2013-01-25 15:54:00 +0530403 omap_control_usb_set_mode(glue->control_otghs, USB_MODE_DEVICE);
Hema HK002eda12011-02-17 12:06:10 +0530404 break;
405
406 default:
407 break;
408 }
409}
410
411static void omap2430_musb_disable(struct musb *musb)
412{
Kishon Vijay Abraham Ic9721432012-06-22 17:40:52 +0530413 struct device *dev = musb->controller;
414 struct omap2430_glue *glue = dev_get_drvdata(dev->parent);
415
Tony Lindgrena83e17d2016-05-31 10:05:16 -0500416 if (!WARN_ON(!musb->phy))
417 phy_power_off(musb->phy);
418
Tony Lindgren80555552015-11-30 21:37:12 -0800419 if (glue->status != MUSB_UNKNOWN)
Kishon Vijay Abraham Ica784be2013-01-25 15:54:00 +0530420 omap_control_usb_set_mode(glue->control_otghs,
421 USB_MODE_DISCONNECT);
Tony Lindgren21f77be2016-05-31 10:05:15 -0500422
423 omap2430_set_power(musb, false, glue->cable_connected);
Felipe Balbi550a7372008-07-24 12:27:36 +0300424}
425
Felipe Balbi743411b2010-12-01 13:22:05 +0200426static int omap2430_musb_exit(struct musb *musb)
Felipe Balbi550a7372008-07-24 12:27:36 +0300427{
Tony Lindgrena83e17d2016-05-31 10:05:16 -0500428 struct device *dev = musb->controller;
429 struct omap2430_glue *glue = dev_get_drvdata(dev->parent);
Felipe Balbi550a7372008-07-24 12:27:36 +0300430
Felipe Balbic20aebb2010-12-02 12:44:40 +0200431 omap2430_low_level_exit(musb);
Kishon Vijay Abraham I3e3101d2013-09-27 11:53:30 +0530432 phy_exit(musb->phy);
Tony Lindgrena83e17d2016-05-31 10:05:16 -0500433 musb->phy = NULL;
434 cancel_work_sync(&glue->omap_musb_mailbox_work);
Felipe Balbic20aebb2010-12-02 12:44:40 +0200435
Felipe Balbi550a7372008-07-24 12:27:36 +0300436 return 0;
437}
Felipe Balbi743411b2010-12-01 13:22:05 +0200438
Felipe Balbif7ec9432010-12-02 09:48:58 +0200439static const struct musb_platform_ops omap2430_ops = {
Tony Lindgrenf8e9f34f2015-05-01 12:29:27 -0700440 .quirks = MUSB_DMA_INVENTRA,
Tony Lindgren7f6283e2015-05-01 12:29:28 -0700441#ifdef CONFIG_USB_INVENTRA_DMA
442 .dma_init = musbhs_dma_controller_create,
443 .dma_exit = musbhs_dma_controller_destroy,
444#endif
Felipe Balbi743411b2010-12-01 13:22:05 +0200445 .init = omap2430_musb_init,
446 .exit = omap2430_musb_exit,
447
Felipe Balbi743411b2010-12-01 13:22:05 +0200448 .set_vbus = omap2430_musb_set_vbus,
Hema HK002eda12011-02-17 12:06:10 +0530449
450 .enable = omap2430_musb_enable,
451 .disable = omap2430_musb_disable,
Tony Lindgren80555552015-11-30 21:37:12 -0800452
453 .phy_callback = omap2430_musb_mailbox,
Felipe Balbi743411b2010-12-01 13:22:05 +0200454};
Felipe Balbidc098862010-12-01 15:01:11 +0200455
456static u64 omap2430_dmamask = DMA_BIT_MASK(32);
457
Bill Pemberton41ac7b32012-11-19 13:21:48 -0500458static int omap2430_probe(struct platform_device *pdev)
Felipe Balbidc098862010-12-01 15:01:11 +0200459{
Kishon Vijay Abraham Ic1f01be2013-07-17 10:51:22 +0300460 struct resource musb_resources[3];
Jingoo Hanc1a7d672013-07-30 17:03:12 +0900461 struct musb_hdrc_platform_data *pdata = dev_get_platdata(&pdev->dev);
Kishon Vijay Abraham I00a0b1d2012-09-11 14:39:40 +0530462 struct omap_musb_board_data *data;
Felipe Balbidc098862010-12-01 15:01:11 +0200463 struct platform_device *musb;
Felipe Balbia3cee122010-12-02 09:27:29 +0200464 struct omap2430_glue *glue;
Kishon Vijay Abraham I00a0b1d2012-09-11 14:39:40 +0530465 struct device_node *np = pdev->dev.of_node;
466 struct musb_hdrc_config *config;
Tony Lindgren606bf4d2015-02-04 06:28:49 -0800467 int ret = -ENOMEM, val;
Felipe Balbidc098862010-12-01 15:01:11 +0200468
Kishon Vijay Abraham Ib1183c22012-06-22 17:40:54 +0530469 glue = devm_kzalloc(&pdev->dev, sizeof(*glue), GFP_KERNEL);
Peter Chenaf1bdfc2014-10-14 15:56:08 +0800470 if (!glue)
Felipe Balbia3cee122010-12-02 09:27:29 +0200471 goto err0;
Felipe Balbia3cee122010-12-02 09:27:29 +0200472
Sebastian Andrzej Siewior2f771162012-10-31 16:12:43 +0100473 musb = platform_device_alloc("musb-hdrc", PLATFORM_DEVID_AUTO);
474 if (!musb) {
475 dev_err(&pdev->dev, "failed to allocate musb device\n");
Kishon Vijay Abraham Ib1183c22012-06-22 17:40:54 +0530476 goto err0;
Felipe Balbidc098862010-12-01 15:01:11 +0200477 }
478
479 musb->dev.parent = &pdev->dev;
480 musb->dev.dma_mask = &omap2430_dmamask;
481 musb->dev.coherent_dma_mask = omap2430_dmamask;
482
Felipe Balbia3cee122010-12-02 09:27:29 +0200483 glue->dev = &pdev->dev;
484 glue->musb = musb;
Tony Lindgren80555552015-11-30 21:37:12 -0800485 glue->status = MUSB_UNKNOWN;
Roger Quadros8934d3e2013-10-03 18:12:34 +0300486 glue->control_otghs = ERR_PTR(-ENODEV);
Felipe Balbia3cee122010-12-02 09:27:29 +0200487
Kishon Vijay Abraham I00a0b1d2012-09-11 14:39:40 +0530488 if (np) {
Roger Quadros8934d3e2013-10-03 18:12:34 +0300489 struct device_node *control_node;
490 struct platform_device *control_pdev;
491
Kishon Vijay Abraham I00a0b1d2012-09-11 14:39:40 +0530492 pdata = devm_kzalloc(&pdev->dev, sizeof(*pdata), GFP_KERNEL);
Peter Chenaf1bdfc2014-10-14 15:56:08 +0800493 if (!pdata)
Sebastian Andrzej Siewior2f771162012-10-31 16:12:43 +0100494 goto err2;
Kishon Vijay Abraham I00a0b1d2012-09-11 14:39:40 +0530495
496 data = devm_kzalloc(&pdev->dev, sizeof(*data), GFP_KERNEL);
Peter Chenaf1bdfc2014-10-14 15:56:08 +0800497 if (!data)
Sebastian Andrzej Siewior2f771162012-10-31 16:12:43 +0100498 goto err2;
Kishon Vijay Abraham I00a0b1d2012-09-11 14:39:40 +0530499
500 config = devm_kzalloc(&pdev->dev, sizeof(*config), GFP_KERNEL);
Peter Chenaf1bdfc2014-10-14 15:56:08 +0800501 if (!config)
Sebastian Andrzej Siewior2f771162012-10-31 16:12:43 +0100502 goto err2;
Kishon Vijay Abraham I00a0b1d2012-09-11 14:39:40 +0530503
504 of_property_read_u32(np, "mode", (u32 *)&pdata->mode);
Kishon Vijay Abraham Ieee44da2013-03-07 18:51:46 +0530505 of_property_read_u32(np, "interface-type",
Kishon Vijay Abraham I00a0b1d2012-09-11 14:39:40 +0530506 (u32 *)&data->interface_type);
Kishon Vijay Abraham Ieee44da2013-03-07 18:51:46 +0530507 of_property_read_u32(np, "num-eps", (u32 *)&config->num_eps);
508 of_property_read_u32(np, "ram-bits", (u32 *)&config->ram_bits);
Kishon Vijay Abraham I00a0b1d2012-09-11 14:39:40 +0530509 of_property_read_u32(np, "power", (u32 *)&pdata->power);
Tony Lindgren606bf4d2015-02-04 06:28:49 -0800510
511 ret = of_property_read_u32(np, "multipoint", &val);
512 if (!ret && val)
513 config->multipoint = true;
Kishon Vijay Abraham I00a0b1d2012-09-11 14:39:40 +0530514
515 pdata->board_data = data;
516 pdata->config = config;
Kishon Vijay Abraham I00a0b1d2012-09-11 14:39:40 +0530517
Roger Quadros8934d3e2013-10-03 18:12:34 +0300518 control_node = of_parse_phandle(np, "ctrl-module", 0);
519 if (control_node) {
520 control_pdev = of_find_device_by_node(control_node);
521 if (!control_pdev) {
522 dev_err(&pdev->dev, "Failed to get control device\n");
523 ret = -EINVAL;
524 goto err2;
525 }
526 glue->control_otghs = &control_pdev->dev;
Kishon Vijay Abraham Ica784be2013-01-25 15:54:00 +0530527 }
Kishon Vijay Abraham Ica784be2013-01-25 15:54:00 +0530528 }
Felipe Balbif7ec9432010-12-02 09:48:58 +0200529 pdata->platform_ops = &omap2430_ops;
530
Felipe Balbia3cee122010-12-02 09:27:29 +0200531 platform_set_drvdata(pdev, glue);
Felipe Balbidc098862010-12-01 15:01:11 +0200532
Kishon Vijay Abraham Ic9721432012-06-22 17:40:52 +0530533 /*
534 * REVISIT if we ever have two instances of the wrapper, we will be
535 * in big trouble
536 */
537 _glue = glue;
538
Kishon Vijay Abraham I1e5acb82012-06-22 17:40:51 +0530539 INIT_WORK(&glue->omap_musb_mailbox_work, omap_musb_mailbox_work);
540
Sebastian Andrzej Siewior3a0ddc72013-06-25 09:41:02 +0200541 memset(musb_resources, 0x00, sizeof(*musb_resources) *
Felipe Balbi09fc7d22013-04-24 17:21:42 +0300542 ARRAY_SIZE(musb_resources));
543
544 musb_resources[0].name = pdev->resource[0].name;
545 musb_resources[0].start = pdev->resource[0].start;
546 musb_resources[0].end = pdev->resource[0].end;
547 musb_resources[0].flags = pdev->resource[0].flags;
548
549 musb_resources[1].name = pdev->resource[1].name;
550 musb_resources[1].start = pdev->resource[1].start;
551 musb_resources[1].end = pdev->resource[1].end;
552 musb_resources[1].flags = pdev->resource[1].flags;
553
Kishon Vijay Abraham Ic1f01be2013-07-17 10:51:22 +0300554 musb_resources[2].name = pdev->resource[2].name;
555 musb_resources[2].start = pdev->resource[2].start;
556 musb_resources[2].end = pdev->resource[2].end;
557 musb_resources[2].flags = pdev->resource[2].flags;
558
Felipe Balbi09fc7d22013-04-24 17:21:42 +0300559 ret = platform_device_add_resources(musb, musb_resources,
560 ARRAY_SIZE(musb_resources));
Felipe Balbidc098862010-12-01 15:01:11 +0200561 if (ret) {
562 dev_err(&pdev->dev, "failed to add resources\n");
B, Ravi65b3d522012-08-31 11:09:49 +0000563 goto err2;
Felipe Balbidc098862010-12-01 15:01:11 +0200564 }
565
566 ret = platform_device_add_data(musb, pdata, sizeof(*pdata));
567 if (ret) {
568 dev_err(&pdev->dev, "failed to add platform_data\n");
B, Ravi65b3d522012-08-31 11:09:49 +0000569 goto err2;
Felipe Balbidc098862010-12-01 15:01:11 +0200570 }
571
Tony Lindgren87326e82016-05-31 10:05:20 -0500572 pm_runtime_enable(glue->dev);
573 pm_runtime_use_autosuspend(glue->dev);
574 pm_runtime_set_autosuspend_delay(glue->dev, 500);
Kishon Vijay Abraham I3006dc82012-03-21 21:30:20 +0530575
Felipe Balbidc098862010-12-01 15:01:11 +0200576 ret = platform_device_add(musb);
577 if (ret) {
578 dev_err(&pdev->dev, "failed to register musb device\n");
B, Ravi65b3d522012-08-31 11:09:49 +0000579 goto err2;
Felipe Balbidc098862010-12-01 15:01:11 +0200580 }
581
582 return 0;
583
B, Ravi65b3d522012-08-31 11:09:49 +0000584err2:
Kishon Vijay Abraham Ib1183c22012-06-22 17:40:54 +0530585 platform_device_put(musb);
Felipe Balbia3cee122010-12-02 09:27:29 +0200586
Felipe Balbidc098862010-12-01 15:01:11 +0200587err0:
588 return ret;
589}
590
Bill Pembertonfb4e98a2012-11-19 13:26:20 -0500591static int omap2430_remove(struct platform_device *pdev)
Felipe Balbidc098862010-12-01 15:01:11 +0200592{
Tony Lindgren21f77be2016-05-31 10:05:15 -0500593 struct omap2430_glue *glue = platform_get_drvdata(pdev);
594 struct musb *musb = glue_to_musb(glue);
Felipe Balbidc098862010-12-01 15:01:11 +0200595
Tony Lindgren03e43522015-11-30 21:37:13 -0800596 pm_runtime_get_sync(glue->dev);
Kishon Vijay Abraham If039df52012-08-02 15:30:07 +0530597 platform_device_unregister(glue->musb);
Tony Lindgren21f77be2016-05-31 10:05:15 -0500598 omap2430_set_power(musb, false, false);
Tony Lindgren03e43522015-11-30 21:37:13 -0800599 pm_runtime_put_sync(glue->dev);
Tony Lindgren87326e82016-05-31 10:05:20 -0500600 pm_runtime_dont_use_autosuspend(glue->dev);
Tony Lindgren03e43522015-11-30 21:37:13 -0800601 pm_runtime_disable(glue->dev);
Felipe Balbidc098862010-12-01 15:01:11 +0200602
603 return 0;
604}
605
Felipe Balbic20aebb2010-12-02 12:44:40 +0200606#ifdef CONFIG_PM
Felipe Balbic20aebb2010-12-02 12:44:40 +0200607
Hema HK7acc6192011-02-28 14:19:34 +0530608static int omap2430_runtime_suspend(struct device *dev)
Felipe Balbic20aebb2010-12-02 12:44:40 +0200609{
610 struct omap2430_glue *glue = dev_get_drvdata(dev);
611 struct musb *musb = glue_to_musb(glue);
612
Tony Lindgrena83e17d2016-05-31 10:05:16 -0500613 if (!musb)
614 return 0;
Hema HKe25bec12011-09-07 09:19:24 -0700615
Tony Lindgrena83e17d2016-05-31 10:05:16 -0500616 musb->context.otg_interfsel = musb_readl(musb->mregs,
617 OTG_INTERFSEL);
618
619 omap2430_low_level_exit(musb);
Felipe Balbic20aebb2010-12-02 12:44:40 +0200620
621 return 0;
622}
623
Hema HK7acc6192011-02-28 14:19:34 +0530624static int omap2430_runtime_resume(struct device *dev)
Felipe Balbic20aebb2010-12-02 12:44:40 +0200625{
626 struct omap2430_glue *glue = dev_get_drvdata(dev);
627 struct musb *musb = glue_to_musb(glue);
Felipe Balbic20aebb2010-12-02 12:44:40 +0200628
Tony Lindgren8f2279d2015-10-28 10:16:04 -0700629 if (!musb)
Tony Lindgrena83e17d2016-05-31 10:05:16 -0500630 return 0;
Tony Lindgren8f2279d2015-10-28 10:16:04 -0700631
632 omap2430_low_level_init(musb);
633 musb_writel(musb->mregs, OTG_INTERFSEL,
634 musb->context.otg_interfsel);
Felipe Balbic20aebb2010-12-02 12:44:40 +0200635
636 return 0;
637}
638
639static struct dev_pm_ops omap2430_pm_ops = {
Hema HK7acc6192011-02-28 14:19:34 +0530640 .runtime_suspend = omap2430_runtime_suspend,
641 .runtime_resume = omap2430_runtime_resume,
Felipe Balbic20aebb2010-12-02 12:44:40 +0200642};
643
644#define DEV_PM_OPS (&omap2430_pm_ops)
645#else
646#define DEV_PM_OPS NULL
647#endif
648
Kishon Vijay Abraham I00a0b1d2012-09-11 14:39:40 +0530649#ifdef CONFIG_OF
650static const struct of_device_id omap2430_id_table[] = {
651 {
652 .compatible = "ti,omap4-musb"
653 },
654 {
655 .compatible = "ti,omap3-musb"
656 },
657 {},
658};
659MODULE_DEVICE_TABLE(of, omap2430_id_table);
660#endif
661
Felipe Balbidc098862010-12-01 15:01:11 +0200662static struct platform_driver omap2430_driver = {
Felipe Balbie9e8c852012-01-26 12:40:23 +0200663 .probe = omap2430_probe,
Bill Pemberton76904172012-11-19 13:21:08 -0500664 .remove = omap2430_remove,
Felipe Balbidc098862010-12-01 15:01:11 +0200665 .driver = {
666 .name = "musb-omap2430",
Felipe Balbic20aebb2010-12-02 12:44:40 +0200667 .pm = DEV_PM_OPS,
Kishon Vijay Abraham I00a0b1d2012-09-11 14:39:40 +0530668 .of_match_table = of_match_ptr(omap2430_id_table),
Felipe Balbidc098862010-12-01 15:01:11 +0200669 },
670};
671
Tony Lindgrenaec373c2016-05-31 10:05:22 -0500672module_platform_driver(omap2430_driver);
673
Felipe Balbidc098862010-12-01 15:01:11 +0200674MODULE_DESCRIPTION("OMAP2PLUS MUSB Glue Layer");
675MODULE_AUTHOR("Felipe Balbi <balbi@ti.com>");
676MODULE_LICENSE("GPL v2");