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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;
Heikki Krogerusd445b6d2012-02-13 13:24:15 +020080 otg->default_a = 1;
Antoine Tenarte47d9252014-10-30 18:41:13 +010081 musb->xceiv->otg->state = OTG_STATE_A_WAIT_VRISE;
Hema HK594632e2010-12-10 18:10:51 +053082 devctl |= MUSB_DEVCTL_SESSION;
83 MUSB_HST_MODE(musb);
84 }
Felipe Balbi550a7372008-07-24 12:27:36 +030085 } else {
86 musb->is_active = 0;
87
88 /* NOTE: we're skipping A_WAIT_VFALL -> A_IDLE and
89 * jumping right to B_IDLE...
90 */
91
Heikki Krogerusd445b6d2012-02-13 13:24:15 +020092 otg->default_a = 0;
Antoine Tenarte47d9252014-10-30 18:41:13 +010093 musb->xceiv->otg->state = OTG_STATE_B_IDLE;
Felipe Balbi550a7372008-07-24 12:27:36 +030094 devctl &= ~MUSB_DEVCTL_SESSION;
95
96 MUSB_DEV_MODE(musb);
97 }
98 musb_writeb(musb->mregs, MUSB_DEVCTL, devctl);
99
Felipe Balbi5c8a86e2011-05-11 12:44:08 +0300100 dev_dbg(musb->controller, "VBUS %s, devctl %02x "
Felipe Balbi550a7372008-07-24 12:27:36 +0300101 /* otg %3x conf %08x prcm %08x */ "\n",
Antoine Tenarte47d9252014-10-30 18:41:13 +0100102 usb_otg_state_string(musb->xceiv->otg->state),
Felipe Balbi550a7372008-07-24 12:27:36 +0300103 musb_readb(musb->mregs, MUSB_DEVCTL));
104}
Felipe Balbi550a7372008-07-24 12:27:36 +0300105
Felipe Balbic20aebb2010-12-02 12:44:40 +0200106static inline void omap2430_low_level_exit(struct musb *musb)
107{
108 u32 l;
109
110 /* in any role */
111 l = musb_readl(musb->mregs, OTG_FORCESTDBY);
112 l |= ENABLEFORCE; /* enable MSTANDBY */
113 musb_writel(musb->mregs, OTG_FORCESTDBY, l);
Felipe Balbic20aebb2010-12-02 12:44:40 +0200114}
115
116static inline void omap2430_low_level_init(struct musb *musb)
117{
118 u32 l;
119
Felipe Balbic20aebb2010-12-02 12:44:40 +0200120 l = musb_readl(musb->mregs, OTG_FORCESTDBY);
121 l &= ~ENABLEFORCE; /* disable MSTANDBY */
122 musb_writel(musb->mregs, OTG_FORCESTDBY, l);
123}
124
Tony Lindgren12b7db22016-05-31 10:05:19 -0500125static int omap2430_musb_mailbox(enum musb_vbus_id_status status)
Hema HK594632e2010-12-10 18:10:51 +0530126{
Kishon Vijay Abraham Ic9721432012-06-22 17:40:52 +0530127 struct omap2430_glue *glue = _glue;
Vikram Pandita712d8ef2011-08-12 07:38:51 -0700128
Aaro Koskinenf8c4b0e2013-03-05 13:04:23 +0200129 if (!glue) {
130 pr_err("%s: musb core is not yet initialized\n", __func__);
Tony Lindgren12b7db22016-05-31 10:05:19 -0500131 return -EPROBE_DEFER;
Aaro Koskinenf8c4b0e2013-03-05 13:04:23 +0200132 }
133 glue->status = status;
134
135 if (!glue_to_musb(glue)) {
Aaro Koskinen80ab72e2012-12-23 01:24:51 +0200136 pr_err("%s: musb core is not yet ready\n", __func__);
Tony Lindgren12b7db22016-05-31 10:05:19 -0500137 return -EPROBE_DEFER;
Kishon Vijay Abraham Ic9721432012-06-22 17:40:52 +0530138 }
139
Kishon Vijay Abraham I1e5acb82012-06-22 17:40:51 +0530140 schedule_work(&glue->omap_musb_mailbox_work);
Tony Lindgren12b7db22016-05-31 10:05:19 -0500141
142 return 0;
Vikram Pandita712d8ef2011-08-12 07:38:51 -0700143}
144
Kishon Vijay Abraham Ic9721432012-06-22 17:40:52 +0530145static void omap_musb_set_mailbox(struct omap2430_glue *glue)
Vikram Pandita712d8ef2011-08-12 07:38:51 -0700146{
Kishon Vijay Abraham I1e5acb82012-06-22 17:40:51 +0530147 struct musb *musb = glue_to_musb(glue);
Tony Lindgrenae909fe2016-09-12 21:48:30 -0500148 struct musb_hdrc_platform_data *pdata =
149 dev_get_platdata(musb->controller);
Hema HK594632e2010-12-10 18:10:51 +0530150 struct omap_musb_board_data *data = pdata->board_data;
Kishon Vijay Abraham Ic83a8542012-06-22 17:40:53 +0530151 struct usb_otg *otg = musb->xceiv->otg;
Tony Lindgren21f77be2016-05-31 10:05:15 -0500152
Tony Lindgrenae909fe2016-09-12 21:48:30 -0500153 pm_runtime_get_sync(musb->controller);
Kishon Vijay Abraham Ic9721432012-06-22 17:40:52 +0530154 switch (glue->status) {
Tony Lindgren80555552015-11-30 21:37:12 -0800155 case MUSB_ID_GROUND:
Tony Lindgrenae909fe2016-09-12 21:48:30 -0500156 dev_dbg(musb->controller, "ID GND\n");
Hema HK594632e2010-12-10 18:10:51 +0530157
Kishon Vijay Abraham Ic83a8542012-06-22 17:40:53 +0530158 otg->default_a = true;
Antoine Tenarte47d9252014-10-30 18:41:13 +0100159 musb->xceiv->otg->state = OTG_STATE_A_IDLE;
Kishon Vijay Abraham Ic9721432012-06-22 17:40:52 +0530160 musb->xceiv->last_event = USB_EVENT_ID;
Felipe Balbi032ec492011-11-24 15:46:26 +0200161 if (musb->gadget_driver) {
Kishon Vijay Abraham Ica784be2013-01-25 15:54:00 +0530162 omap_control_usb_set_mode(glue->control_otghs,
163 USB_MODE_HOST);
Hema HK70045c52011-02-28 15:05:29 +0530164 omap2430_musb_set_vbus(musb, 1);
Hema HK594632e2010-12-10 18:10:51 +0530165 }
166 break;
167
Tony Lindgren80555552015-11-30 21:37:12 -0800168 case MUSB_VBUS_VALID:
Tony Lindgrenae909fe2016-09-12 21:48:30 -0500169 dev_dbg(musb->controller, "VBUS Connect\n");
Hema HK594632e2010-12-10 18:10:51 +0530170
Kishon Vijay Abraham Ic83a8542012-06-22 17:40:53 +0530171 otg->default_a = false;
Antoine Tenarte47d9252014-10-30 18:41:13 +0100172 musb->xceiv->otg->state = OTG_STATE_B_IDLE;
Kishon Vijay Abraham Ic9721432012-06-22 17:40:52 +0530173 musb->xceiv->last_event = USB_EVENT_VBUS;
Kishon Vijay Abraham Ica784be2013-01-25 15:54:00 +0530174 omap_control_usb_set_mode(glue->control_otghs, USB_MODE_DEVICE);
Hema HK594632e2010-12-10 18:10:51 +0530175 break;
176
Tony Lindgren80555552015-11-30 21:37:12 -0800177 case MUSB_ID_FLOAT:
178 case MUSB_VBUS_OFF:
Tony Lindgrenae909fe2016-09-12 21:48:30 -0500179 dev_dbg(musb->controller, "VBUS Disconnect\n");
Hema HK594632e2010-12-10 18:10:51 +0530180
Kishon Vijay Abraham Ic9721432012-06-22 17:40:52 +0530181 musb->xceiv->last_event = USB_EVENT_NONE;
Tony Lindgren21f77be2016-05-31 10:05:15 -0500182 if (musb->gadget_driver)
Grazvydas Ignotas2c1fe892013-03-24 17:36:54 +0200183 omap2430_musb_set_vbus(musb, 0);
Hema HK7acc6192011-02-28 14:19:34 +0530184
Kishon Vijay Abraham Ibb467cf2013-03-14 11:53:56 +0530185 if (data->interface_type == MUSB_INTERFACE_UTMI)
186 otg_set_vbus(musb->xceiv->otg, 0);
187
Kishon Vijay Abraham Ica784be2013-01-25 15:54:00 +0530188 omap_control_usb_set_mode(glue->control_otghs,
189 USB_MODE_DISCONNECT);
Hema HK594632e2010-12-10 18:10:51 +0530190 break;
191 default:
Tony Lindgrenae909fe2016-09-12 21:48:30 -0500192 dev_dbg(musb->controller, "ID float\n");
Hema HK594632e2010-12-10 18:10:51 +0530193 }
Tony Lindgrenae909fe2016-09-12 21:48:30 -0500194 pm_runtime_mark_last_busy(musb->controller);
195 pm_runtime_put_autosuspend(musb->controller);
Pali Rohár6fa71782013-09-18 19:03:34 +0200196 atomic_notifier_call_chain(&musb->xceiv->notifier,
197 musb->xceiv->last_event, NULL);
Hema HK594632e2010-12-10 18:10:51 +0530198}
199
Kishon Vijay Abraham Ic9721432012-06-22 17:40:52 +0530200
201static void omap_musb_mailbox_work(struct work_struct *mailbox_work)
202{
203 struct omap2430_glue *glue = container_of(mailbox_work,
204 struct omap2430_glue, omap_musb_mailbox_work);
Felipe Balbi8b2bc2c2014-04-07 10:58:01 -0500205
Kishon Vijay Abraham Ic9721432012-06-22 17:40:52 +0530206 omap_musb_set_mailbox(glue);
207}
208
Philippe De Swertbaef6532012-11-06 15:32:13 +0200209static irqreturn_t omap2430_musb_interrupt(int irq, void *__hci)
210{
211 unsigned long flags;
212 irqreturn_t retval = IRQ_NONE;
213 struct musb *musb = __hci;
214
215 spin_lock_irqsave(&musb->lock, flags);
216
217 musb->int_usb = musb_readb(musb->mregs, MUSB_INTRUSB);
218 musb->int_tx = musb_readw(musb->mregs, MUSB_INTRTX);
219 musb->int_rx = musb_readw(musb->mregs, MUSB_INTRRX);
220
221 if (musb->int_usb || musb->int_tx || musb->int_rx)
222 retval = musb_interrupt(musb);
223
224 spin_unlock_irqrestore(&musb->lock, flags);
225
226 return retval;
227}
228
Felipe Balbi743411b2010-12-01 13:22:05 +0200229static int omap2430_musb_init(struct musb *musb)
Felipe Balbi550a7372008-07-24 12:27:36 +0300230{
Shubhrajyoti Dad579692012-03-22 12:48:06 +0530231 u32 l;
232 int status = 0;
Hema Kalliguddiea65df52010-09-22 19:27:40 -0500233 struct device *dev = musb->controller;
Kishon Vijay Abraham Ic9721432012-06-22 17:40:52 +0530234 struct omap2430_glue *glue = dev_get_drvdata(dev->parent);
Jingoo Hanc1a7d672013-07-30 17:03:12 +0900235 struct musb_hdrc_platform_data *plat = dev_get_platdata(dev);
Hema Kalliguddiea65df52010-09-22 19:27:40 -0500236 struct omap_musb_board_data *data = plat->board_data;
Felipe Balbi550a7372008-07-24 12:27:36 +0300237
David Brownell84e250f2009-03-31 12:30:04 -0700238 /* We require some kind of external transceiver, hooked
239 * up through ULPI. TWL4030-family PMICs include one,
240 * which needs a driver, drivers aren't always needed.
241 */
Kishon Vijay Abraham I3e3101d2013-09-27 11:53:30 +0530242 if (dev->parent->of_node) {
243 musb->phy = devm_phy_get(dev->parent, "usb2-phy");
244
245 /* We can't totally remove musb->xceiv as of now because
246 * musb core uses xceiv.state and xceiv.otg. Once we have
247 * a separate state machine to handle otg, these can be moved
248 * out of xceiv and then we can start using the generic PHY
249 * framework
250 */
Kishon Vijay Abraham Ib16604f2013-01-25 08:03:26 +0530251 musb->xceiv = devm_usb_get_phy_by_phandle(dev->parent,
252 "usb-phy", 0);
Kishon Vijay Abraham I3e3101d2013-09-27 11:53:30 +0530253 } else {
Kishon Vijay Abraham Ib16604f2013-01-25 08:03:26 +0530254 musb->xceiv = devm_usb_get_phy_dev(dev, 0);
Kishon Vijay Abraham I3e3101d2013-09-27 11:53:30 +0530255 musb->phy = devm_phy_get(dev, "usb");
256 }
Kishon Vijay Abraham Ib16604f2013-01-25 08:03:26 +0530257
Felipe Balbia90199b2013-03-15 10:57:40 +0200258 if (IS_ERR(musb->xceiv)) {
259 status = PTR_ERR(musb->xceiv);
260
261 if (status == -ENXIO)
262 return status;
263
Ladislav Michldc66ba82016-11-21 08:59:26 -0600264 dev_dbg(dev, "HS USB OTG: no transceiver configured\n");
Ming Lei25736e02013-01-04 23:13:58 +0800265 return -EPROBE_DEFER;
David Brownell84e250f2009-03-31 12:30:04 -0700266 }
267
Kishon Vijay Abraham I3e3101d2013-09-27 11:53:30 +0530268 if (IS_ERR(musb->phy)) {
Ladislav Michl71127a72016-11-21 08:59:25 -0600269 dev_err(dev, "HS USB OTG: no PHY configured\n");
Kishon Vijay Abraham I3e3101d2013-09-27 11:53:30 +0530270 return PTR_ERR(musb->phy);
271 }
Philippe De Swertbaef6532012-11-06 15:32:13 +0200272 musb->isr = omap2430_musb_interrupt;
Tony Lindgrena83e17d2016-05-31 10:05:16 -0500273 phy_init(musb->phy);
Tony Lindgrend8e5f0e2016-10-19 12:03:39 -0500274 phy_power_on(musb->phy);
Philippe De Swertbaef6532012-11-06 15:32:13 +0200275
Felipe Balbi8573e6a2010-01-21 15:33:53 +0200276 l = musb_readl(musb->mregs, OTG_INTERFSEL);
Maulik Mankadde2e1b02010-03-12 10:29:07 +0200277
278 if (data->interface_type == MUSB_INTERFACE_UTMI) {
279 /* OMAP4 uses Internal PHY GS70 which uses UTMI interface */
280 l &= ~ULPI_12PIN; /* Disable ULPI */
281 l |= UTMI_8BIT; /* Enable UTMI */
282 } else {
283 l |= ULPI_12PIN;
284 }
285
Felipe Balbi8573e6a2010-01-21 15:33:53 +0200286 musb_writel(musb->mregs, OTG_INTERFSEL, l);
Felipe Balbi550a7372008-07-24 12:27:36 +0300287
Ladislav Michl71127a72016-11-21 08:59:25 -0600288 dev_dbg(dev, "HS USB OTG: revision 0x%x, sysconfig 0x%02x, "
Felipe Balbi550a7372008-07-24 12:27:36 +0300289 "sysstatus 0x%x, intrfsel 0x%x, simenable 0x%x\n",
Felipe Balbi8573e6a2010-01-21 15:33:53 +0200290 musb_readl(musb->mregs, OTG_REVISION),
291 musb_readl(musb->mregs, OTG_SYSCONFIG),
292 musb_readl(musb->mregs, OTG_SYSSTATUS),
293 musb_readl(musb->mregs, OTG_INTERFSEL),
294 musb_readl(musb->mregs, OTG_SIMENABLE));
Felipe Balbi550a7372008-07-24 12:27:36 +0300295
Tony Lindgren80555552015-11-30 21:37:12 -0800296 if (glue->status != MUSB_UNKNOWN)
Kishon Vijay Abraham Ic9721432012-06-22 17:40:52 +0530297 omap_musb_set_mailbox(glue);
298
Felipe Balbi550a7372008-07-24 12:27:36 +0300299 return 0;
300}
301
Hema HK002eda12011-02-17 12:06:10 +0530302static void omap2430_musb_enable(struct musb *musb)
303{
304 u8 devctl;
305 unsigned long timeout = jiffies + msecs_to_jiffies(1000);
306 struct device *dev = musb->controller;
Kishon Vijay Abraham Ic9721432012-06-22 17:40:52 +0530307 struct omap2430_glue *glue = dev_get_drvdata(dev->parent);
Jingoo Hanc1a7d672013-07-30 17:03:12 +0900308 struct musb_hdrc_platform_data *pdata = dev_get_platdata(dev);
Hema HK002eda12011-02-17 12:06:10 +0530309 struct omap_musb_board_data *data = pdata->board_data;
310
Tony Lindgrena83e17d2016-05-31 10:05:16 -0500311
Kishon Vijay Abraham Ic9721432012-06-22 17:40:52 +0530312 switch (glue->status) {
Hema HK002eda12011-02-17 12:06:10 +0530313
Tony Lindgren80555552015-11-30 21:37:12 -0800314 case MUSB_ID_GROUND:
Kishon Vijay Abraham Ica784be2013-01-25 15:54:00 +0530315 omap_control_usb_set_mode(glue->control_otghs, USB_MODE_HOST);
Felipe Contreras08dec562011-12-19 22:17:50 +0200316 if (data->interface_type != MUSB_INTERFACE_UTMI)
317 break;
318 devctl = musb_readb(musb->mregs, MUSB_DEVCTL);
319 /* start the session */
320 devctl |= MUSB_DEVCTL_SESSION;
321 musb_writeb(musb->mregs, MUSB_DEVCTL, devctl);
322 while (musb_readb(musb->mregs, MUSB_DEVCTL) &
323 MUSB_DEVCTL_BDEVICE) {
324 cpu_relax();
Hema HK002eda12011-02-17 12:06:10 +0530325
Felipe Contreras08dec562011-12-19 22:17:50 +0200326 if (time_after(jiffies, timeout)) {
327 dev_err(dev, "configured as A device timeout");
328 break;
Hema HK002eda12011-02-17 12:06:10 +0530329 }
330 }
331 break;
332
Tony Lindgren80555552015-11-30 21:37:12 -0800333 case MUSB_VBUS_VALID:
Kishon Vijay Abraham Ica784be2013-01-25 15:54:00 +0530334 omap_control_usb_set_mode(glue->control_otghs, USB_MODE_DEVICE);
Hema HK002eda12011-02-17 12:06:10 +0530335 break;
336
337 default:
338 break;
339 }
340}
341
342static void omap2430_musb_disable(struct musb *musb)
343{
Kishon Vijay Abraham Ic9721432012-06-22 17:40:52 +0530344 struct device *dev = musb->controller;
345 struct omap2430_glue *glue = dev_get_drvdata(dev->parent);
346
Tony Lindgren80555552015-11-30 21:37:12 -0800347 if (glue->status != MUSB_UNKNOWN)
Kishon Vijay Abraham Ica784be2013-01-25 15:54:00 +0530348 omap_control_usb_set_mode(glue->control_otghs,
349 USB_MODE_DISCONNECT);
Felipe Balbi550a7372008-07-24 12:27:36 +0300350}
351
Felipe Balbi743411b2010-12-01 13:22:05 +0200352static int omap2430_musb_exit(struct musb *musb)
Felipe Balbi550a7372008-07-24 12:27:36 +0300353{
Tony Lindgrena83e17d2016-05-31 10:05:16 -0500354 struct device *dev = musb->controller;
355 struct omap2430_glue *glue = dev_get_drvdata(dev->parent);
Felipe Balbi550a7372008-07-24 12:27:36 +0300356
Felipe Balbic20aebb2010-12-02 12:44:40 +0200357 omap2430_low_level_exit(musb);
Tony Lindgrend8e5f0e2016-10-19 12:03:39 -0500358 phy_power_off(musb->phy);
Kishon Vijay Abraham I3e3101d2013-09-27 11:53:30 +0530359 phy_exit(musb->phy);
Tony Lindgrena83e17d2016-05-31 10:05:16 -0500360 musb->phy = NULL;
361 cancel_work_sync(&glue->omap_musb_mailbox_work);
Felipe Balbic20aebb2010-12-02 12:44:40 +0200362
Felipe Balbi550a7372008-07-24 12:27:36 +0300363 return 0;
364}
Felipe Balbi743411b2010-12-01 13:22:05 +0200365
Felipe Balbif7ec9432010-12-02 09:48:58 +0200366static const struct musb_platform_ops omap2430_ops = {
Tony Lindgrenf8e9f34f2015-05-01 12:29:27 -0700367 .quirks = MUSB_DMA_INVENTRA,
Tony Lindgren7f6283e2015-05-01 12:29:28 -0700368#ifdef CONFIG_USB_INVENTRA_DMA
369 .dma_init = musbhs_dma_controller_create,
370 .dma_exit = musbhs_dma_controller_destroy,
371#endif
Felipe Balbi743411b2010-12-01 13:22:05 +0200372 .init = omap2430_musb_init,
373 .exit = omap2430_musb_exit,
374
Felipe Balbi743411b2010-12-01 13:22:05 +0200375 .set_vbus = omap2430_musb_set_vbus,
Hema HK002eda12011-02-17 12:06:10 +0530376
377 .enable = omap2430_musb_enable,
378 .disable = omap2430_musb_disable,
Tony Lindgren80555552015-11-30 21:37:12 -0800379
380 .phy_callback = omap2430_musb_mailbox,
Felipe Balbi743411b2010-12-01 13:22:05 +0200381};
Felipe Balbidc098862010-12-01 15:01:11 +0200382
383static u64 omap2430_dmamask = DMA_BIT_MASK(32);
384
Bill Pemberton41ac7b32012-11-19 13:21:48 -0500385static int omap2430_probe(struct platform_device *pdev)
Felipe Balbidc098862010-12-01 15:01:11 +0200386{
Kishon Vijay Abraham Ic1f01be2013-07-17 10:51:22 +0300387 struct resource musb_resources[3];
Jingoo Hanc1a7d672013-07-30 17:03:12 +0900388 struct musb_hdrc_platform_data *pdata = dev_get_platdata(&pdev->dev);
Kishon Vijay Abraham I00a0b1d2012-09-11 14:39:40 +0530389 struct omap_musb_board_data *data;
Felipe Balbidc098862010-12-01 15:01:11 +0200390 struct platform_device *musb;
Felipe Balbia3cee122010-12-02 09:27:29 +0200391 struct omap2430_glue *glue;
Kishon Vijay Abraham I00a0b1d2012-09-11 14:39:40 +0530392 struct device_node *np = pdev->dev.of_node;
393 struct musb_hdrc_config *config;
Tony Lindgren606bf4d2015-02-04 06:28:49 -0800394 int ret = -ENOMEM, val;
Felipe Balbidc098862010-12-01 15:01:11 +0200395
Kishon Vijay Abraham Ib1183c22012-06-22 17:40:54 +0530396 glue = devm_kzalloc(&pdev->dev, sizeof(*glue), GFP_KERNEL);
Peter Chenaf1bdfc2014-10-14 15:56:08 +0800397 if (!glue)
Felipe Balbia3cee122010-12-02 09:27:29 +0200398 goto err0;
Felipe Balbia3cee122010-12-02 09:27:29 +0200399
Sebastian Andrzej Siewior2f771162012-10-31 16:12:43 +0100400 musb = platform_device_alloc("musb-hdrc", PLATFORM_DEVID_AUTO);
401 if (!musb) {
402 dev_err(&pdev->dev, "failed to allocate musb device\n");
Kishon Vijay Abraham Ib1183c22012-06-22 17:40:54 +0530403 goto err0;
Felipe Balbidc098862010-12-01 15:01:11 +0200404 }
405
406 musb->dev.parent = &pdev->dev;
407 musb->dev.dma_mask = &omap2430_dmamask;
408 musb->dev.coherent_dma_mask = omap2430_dmamask;
409
Felipe Balbia3cee122010-12-02 09:27:29 +0200410 glue->dev = &pdev->dev;
411 glue->musb = musb;
Tony Lindgren80555552015-11-30 21:37:12 -0800412 glue->status = MUSB_UNKNOWN;
Roger Quadros8934d3e2013-10-03 18:12:34 +0300413 glue->control_otghs = ERR_PTR(-ENODEV);
Felipe Balbia3cee122010-12-02 09:27:29 +0200414
Kishon Vijay Abraham I00a0b1d2012-09-11 14:39:40 +0530415 if (np) {
Roger Quadros8934d3e2013-10-03 18:12:34 +0300416 struct device_node *control_node;
417 struct platform_device *control_pdev;
418
Kishon Vijay Abraham I00a0b1d2012-09-11 14:39:40 +0530419 pdata = devm_kzalloc(&pdev->dev, sizeof(*pdata), GFP_KERNEL);
Peter Chenaf1bdfc2014-10-14 15:56:08 +0800420 if (!pdata)
Sebastian Andrzej Siewior2f771162012-10-31 16:12:43 +0100421 goto err2;
Kishon Vijay Abraham I00a0b1d2012-09-11 14:39:40 +0530422
423 data = devm_kzalloc(&pdev->dev, sizeof(*data), GFP_KERNEL);
Peter Chenaf1bdfc2014-10-14 15:56:08 +0800424 if (!data)
Sebastian Andrzej Siewior2f771162012-10-31 16:12:43 +0100425 goto err2;
Kishon Vijay Abraham I00a0b1d2012-09-11 14:39:40 +0530426
427 config = devm_kzalloc(&pdev->dev, sizeof(*config), GFP_KERNEL);
Peter Chenaf1bdfc2014-10-14 15:56:08 +0800428 if (!config)
Sebastian Andrzej Siewior2f771162012-10-31 16:12:43 +0100429 goto err2;
Kishon Vijay Abraham I00a0b1d2012-09-11 14:39:40 +0530430
431 of_property_read_u32(np, "mode", (u32 *)&pdata->mode);
Kishon Vijay Abraham Ieee44da2013-03-07 18:51:46 +0530432 of_property_read_u32(np, "interface-type",
Kishon Vijay Abraham I00a0b1d2012-09-11 14:39:40 +0530433 (u32 *)&data->interface_type);
Kishon Vijay Abraham Ieee44da2013-03-07 18:51:46 +0530434 of_property_read_u32(np, "num-eps", (u32 *)&config->num_eps);
435 of_property_read_u32(np, "ram-bits", (u32 *)&config->ram_bits);
Kishon Vijay Abraham I00a0b1d2012-09-11 14:39:40 +0530436 of_property_read_u32(np, "power", (u32 *)&pdata->power);
Tony Lindgren606bf4d2015-02-04 06:28:49 -0800437
438 ret = of_property_read_u32(np, "multipoint", &val);
439 if (!ret && val)
440 config->multipoint = true;
Kishon Vijay Abraham I00a0b1d2012-09-11 14:39:40 +0530441
442 pdata->board_data = data;
443 pdata->config = config;
Kishon Vijay Abraham I00a0b1d2012-09-11 14:39:40 +0530444
Roger Quadros8934d3e2013-10-03 18:12:34 +0300445 control_node = of_parse_phandle(np, "ctrl-module", 0);
446 if (control_node) {
447 control_pdev = of_find_device_by_node(control_node);
448 if (!control_pdev) {
449 dev_err(&pdev->dev, "Failed to get control device\n");
450 ret = -EINVAL;
451 goto err2;
452 }
453 glue->control_otghs = &control_pdev->dev;
Kishon Vijay Abraham Ica784be2013-01-25 15:54:00 +0530454 }
Kishon Vijay Abraham Ica784be2013-01-25 15:54:00 +0530455 }
Felipe Balbif7ec9432010-12-02 09:48:58 +0200456 pdata->platform_ops = &omap2430_ops;
457
Felipe Balbia3cee122010-12-02 09:27:29 +0200458 platform_set_drvdata(pdev, glue);
Felipe Balbidc098862010-12-01 15:01:11 +0200459
Kishon Vijay Abraham Ic9721432012-06-22 17:40:52 +0530460 /*
461 * REVISIT if we ever have two instances of the wrapper, we will be
462 * in big trouble
463 */
464 _glue = glue;
465
Kishon Vijay Abraham I1e5acb82012-06-22 17:40:51 +0530466 INIT_WORK(&glue->omap_musb_mailbox_work, omap_musb_mailbox_work);
467
Sebastian Andrzej Siewior3a0ddc72013-06-25 09:41:02 +0200468 memset(musb_resources, 0x00, sizeof(*musb_resources) *
Felipe Balbi09fc7d22013-04-24 17:21:42 +0300469 ARRAY_SIZE(musb_resources));
470
471 musb_resources[0].name = pdev->resource[0].name;
472 musb_resources[0].start = pdev->resource[0].start;
473 musb_resources[0].end = pdev->resource[0].end;
474 musb_resources[0].flags = pdev->resource[0].flags;
475
476 musb_resources[1].name = pdev->resource[1].name;
477 musb_resources[1].start = pdev->resource[1].start;
478 musb_resources[1].end = pdev->resource[1].end;
479 musb_resources[1].flags = pdev->resource[1].flags;
480
Kishon Vijay Abraham Ic1f01be2013-07-17 10:51:22 +0300481 musb_resources[2].name = pdev->resource[2].name;
482 musb_resources[2].start = pdev->resource[2].start;
483 musb_resources[2].end = pdev->resource[2].end;
484 musb_resources[2].flags = pdev->resource[2].flags;
485
Felipe Balbi09fc7d22013-04-24 17:21:42 +0300486 ret = platform_device_add_resources(musb, musb_resources,
487 ARRAY_SIZE(musb_resources));
Felipe Balbidc098862010-12-01 15:01:11 +0200488 if (ret) {
489 dev_err(&pdev->dev, "failed to add resources\n");
B, Ravi65b3d522012-08-31 11:09:49 +0000490 goto err2;
Felipe Balbidc098862010-12-01 15:01:11 +0200491 }
492
493 ret = platform_device_add_data(musb, pdata, sizeof(*pdata));
494 if (ret) {
495 dev_err(&pdev->dev, "failed to add platform_data\n");
B, Ravi65b3d522012-08-31 11:09:49 +0000496 goto err2;
Felipe Balbidc098862010-12-01 15:01:11 +0200497 }
498
Tony Lindgren87326e82016-05-31 10:05:20 -0500499 pm_runtime_enable(glue->dev);
Kishon Vijay Abraham I3006dc82012-03-21 21:30:20 +0530500
Felipe Balbidc098862010-12-01 15:01:11 +0200501 ret = platform_device_add(musb);
502 if (ret) {
503 dev_err(&pdev->dev, "failed to register musb device\n");
Tony Lindgren536d5992016-11-16 13:21:25 -0600504 goto err3;
Felipe Balbidc098862010-12-01 15:01:11 +0200505 }
506
507 return 0;
508
Tony Lindgren536d5992016-11-16 13:21:25 -0600509err3:
510 pm_runtime_disable(glue->dev);
511
B, Ravi65b3d522012-08-31 11:09:49 +0000512err2:
Kishon Vijay Abraham Ib1183c22012-06-22 17:40:54 +0530513 platform_device_put(musb);
Felipe Balbia3cee122010-12-02 09:27:29 +0200514
Felipe Balbidc098862010-12-01 15:01:11 +0200515err0:
516 return ret;
517}
518
Bill Pembertonfb4e98a2012-11-19 13:26:20 -0500519static int omap2430_remove(struct platform_device *pdev)
Felipe Balbidc098862010-12-01 15:01:11 +0200520{
Tony Lindgren21f77be2016-05-31 10:05:15 -0500521 struct omap2430_glue *glue = platform_get_drvdata(pdev);
Felipe Balbidc098862010-12-01 15:01:11 +0200522
Kishon Vijay Abraham If039df52012-08-02 15:30:07 +0530523 platform_device_unregister(glue->musb);
Tony Lindgren03e43522015-11-30 21:37:13 -0800524 pm_runtime_disable(glue->dev);
Felipe Balbidc098862010-12-01 15:01:11 +0200525
526 return 0;
527}
528
Felipe Balbic20aebb2010-12-02 12:44:40 +0200529#ifdef CONFIG_PM
Felipe Balbic20aebb2010-12-02 12:44:40 +0200530
Hema HK7acc6192011-02-28 14:19:34 +0530531static int omap2430_runtime_suspend(struct device *dev)
Felipe Balbic20aebb2010-12-02 12:44:40 +0200532{
533 struct omap2430_glue *glue = dev_get_drvdata(dev);
534 struct musb *musb = glue_to_musb(glue);
535
Tony Lindgrena83e17d2016-05-31 10:05:16 -0500536 if (!musb)
537 return 0;
Hema HKe25bec12011-09-07 09:19:24 -0700538
Tony Lindgrena83e17d2016-05-31 10:05:16 -0500539 musb->context.otg_interfsel = musb_readl(musb->mregs,
540 OTG_INTERFSEL);
541
542 omap2430_low_level_exit(musb);
Felipe Balbic20aebb2010-12-02 12:44:40 +0200543
544 return 0;
545}
546
Hema HK7acc6192011-02-28 14:19:34 +0530547static int omap2430_runtime_resume(struct device *dev)
Felipe Balbic20aebb2010-12-02 12:44:40 +0200548{
549 struct omap2430_glue *glue = dev_get_drvdata(dev);
550 struct musb *musb = glue_to_musb(glue);
Felipe Balbic20aebb2010-12-02 12:44:40 +0200551
Tony Lindgren8f2279d2015-10-28 10:16:04 -0700552 if (!musb)
Tony Lindgrena83e17d2016-05-31 10:05:16 -0500553 return 0;
Tony Lindgren8f2279d2015-10-28 10:16:04 -0700554
555 omap2430_low_level_init(musb);
556 musb_writel(musb->mregs, OTG_INTERFSEL,
557 musb->context.otg_interfsel);
Felipe Balbic20aebb2010-12-02 12:44:40 +0200558
559 return 0;
560}
561
Bhumika Goyalc0927fe2017-02-01 21:30:26 -0600562static const struct dev_pm_ops omap2430_pm_ops = {
Hema HK7acc6192011-02-28 14:19:34 +0530563 .runtime_suspend = omap2430_runtime_suspend,
564 .runtime_resume = omap2430_runtime_resume,
Felipe Balbic20aebb2010-12-02 12:44:40 +0200565};
566
567#define DEV_PM_OPS (&omap2430_pm_ops)
568#else
569#define DEV_PM_OPS NULL
570#endif
571
Kishon Vijay Abraham I00a0b1d2012-09-11 14:39:40 +0530572#ifdef CONFIG_OF
573static const struct of_device_id omap2430_id_table[] = {
574 {
575 .compatible = "ti,omap4-musb"
576 },
577 {
578 .compatible = "ti,omap3-musb"
579 },
580 {},
581};
582MODULE_DEVICE_TABLE(of, omap2430_id_table);
583#endif
584
Felipe Balbidc098862010-12-01 15:01:11 +0200585static struct platform_driver omap2430_driver = {
Felipe Balbie9e8c852012-01-26 12:40:23 +0200586 .probe = omap2430_probe,
Bill Pemberton76904172012-11-19 13:21:08 -0500587 .remove = omap2430_remove,
Felipe Balbidc098862010-12-01 15:01:11 +0200588 .driver = {
589 .name = "musb-omap2430",
Felipe Balbic20aebb2010-12-02 12:44:40 +0200590 .pm = DEV_PM_OPS,
Kishon Vijay Abraham I00a0b1d2012-09-11 14:39:40 +0530591 .of_match_table = of_match_ptr(omap2430_id_table),
Felipe Balbidc098862010-12-01 15:01:11 +0200592 },
593};
594
Tony Lindgrenaec373c2016-05-31 10:05:22 -0500595module_platform_driver(omap2430_driver);
596
Felipe Balbidc098862010-12-01 15:01:11 +0200597MODULE_DESCRIPTION("OMAP2PLUS MUSB Glue Layer");
598MODULE_AUTHOR("Felipe Balbi <balbi@ti.com>");
599MODULE_LICENSE("GPL v2");