blob: a44680d64f9b479dc62b30520a901fd569af135e [file] [log] [blame]
David Brownell9ebd9612008-12-18 12:25:44 -08001/*
2 * twl4030_usb - TWL4030 USB transceiver, talking to OMAP OTG controller
3 *
4 * Copyright (C) 2004-2007 Texas Instruments
5 * Copyright (C) 2008 Nokia Corporation
6 * Contact: Felipe Balbi <felipe.balbi@nokia.com>
7 *
8 * This program is free software; you can redistribute it and/or modify
9 * it under the terms of the GNU General Public License as published by
10 * the Free Software Foundation; either version 2 of the License, or
11 * (at your option) any later version.
12 *
13 * This program is distributed in the hope that it will be useful,
14 * but WITHOUT ANY WARRANTY; without even the implied warranty of
15 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
16 * GNU General Public License for more details.
17 *
18 * You should have received a copy of the GNU General Public License
19 * along with this program; if not, write to the Free Software
20 * Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.
21 *
22 * Current status:
23 * - HS USB ULPI mode works.
24 * - 3-pin mode support may be added in future.
25 */
26
27#include <linux/module.h>
28#include <linux/init.h>
29#include <linux/interrupt.h>
30#include <linux/platform_device.h>
David Brownell9ebd9612008-12-18 12:25:44 -080031#include <linux/workqueue.h>
32#include <linux/io.h>
33#include <linux/delay.h>
34#include <linux/usb/otg.h>
Kishon Vijay Abraham I6747caa2013-09-27 11:53:27 +053035#include <linux/phy/phy.h>
Tony Lindgren96be39a2014-08-20 12:07:00 -070036#include <linux/pm_runtime.h>
Tony Lindgren80555552015-11-30 21:37:12 -080037#include <linux/usb/musb.h>
Heikki Krogerus92a6e6b2010-03-31 10:18:05 +030038#include <linux/usb/ulpi.h>
Wolfram Sanga2054252017-08-14 18:34:24 +020039#include <linux/mfd/twl.h>
Jouni Hogander66760162009-02-20 14:02:31 +020040#include <linux/regulator/consumer.h>
41#include <linux/err.h>
Tejun Heo5a0e3ad2010-03-24 17:04:11 +090042#include <linux/slab.h>
David Brownell9ebd9612008-12-18 12:25:44 -080043
44/* Register defines */
45
David Brownell9ebd9612008-12-18 12:25:44 -080046#define MCPC_CTRL 0x30
David Brownell9ebd9612008-12-18 12:25:44 -080047#define MCPC_CTRL_RTSOL (1 << 7)
48#define MCPC_CTRL_EXTSWR (1 << 6)
49#define MCPC_CTRL_EXTSWC (1 << 5)
50#define MCPC_CTRL_VOICESW (1 << 4)
51#define MCPC_CTRL_OUT64K (1 << 3)
52#define MCPC_CTRL_RTSCTSSW (1 << 2)
53#define MCPC_CTRL_HS_UART (1 << 0)
54
55#define MCPC_IO_CTRL 0x33
David Brownell9ebd9612008-12-18 12:25:44 -080056#define MCPC_IO_CTRL_MICBIASEN (1 << 5)
57#define MCPC_IO_CTRL_CTS_NPU (1 << 4)
58#define MCPC_IO_CTRL_RXD_PU (1 << 3)
59#define MCPC_IO_CTRL_TXDTYP (1 << 2)
60#define MCPC_IO_CTRL_CTSTYP (1 << 1)
61#define MCPC_IO_CTRL_RTSTYP (1 << 0)
62
63#define MCPC_CTRL2 0x36
David Brownell9ebd9612008-12-18 12:25:44 -080064#define MCPC_CTRL2_MCPC_CK_EN (1 << 0)
65
66#define OTHER_FUNC_CTRL 0x80
David Brownell9ebd9612008-12-18 12:25:44 -080067#define OTHER_FUNC_CTRL_BDIS_ACON_EN (1 << 4)
68#define OTHER_FUNC_CTRL_FIVEWIRE_MODE (1 << 2)
69
70#define OTHER_IFC_CTRL 0x83
David Brownell9ebd9612008-12-18 12:25:44 -080071#define OTHER_IFC_CTRL_OE_INT_EN (1 << 6)
72#define OTHER_IFC_CTRL_CEA2011_MODE (1 << 5)
73#define OTHER_IFC_CTRL_FSLSSERIALMODE_4PIN (1 << 4)
74#define OTHER_IFC_CTRL_HIZ_ULPI_60MHZ_OUT (1 << 3)
75#define OTHER_IFC_CTRL_HIZ_ULPI (1 << 2)
76#define OTHER_IFC_CTRL_ALT_INT_REROUTE (1 << 0)
77
78#define OTHER_INT_EN_RISE 0x86
David Brownell9ebd9612008-12-18 12:25:44 -080079#define OTHER_INT_EN_FALL 0x89
David Brownell9ebd9612008-12-18 12:25:44 -080080#define OTHER_INT_STS 0x8C
81#define OTHER_INT_LATCH 0x8D
82#define OTHER_INT_VB_SESS_VLD (1 << 7)
83#define OTHER_INT_DM_HI (1 << 6) /* not valid for "latch" reg */
84#define OTHER_INT_DP_HI (1 << 5) /* not valid for "latch" reg */
85#define OTHER_INT_BDIS_ACON (1 << 3) /* not valid for "fall" regs */
86#define OTHER_INT_MANU (1 << 1)
87#define OTHER_INT_ABNORMAL_STRESS (1 << 0)
88
89#define ID_STATUS 0x96
90#define ID_RES_FLOAT (1 << 4)
91#define ID_RES_440K (1 << 3)
92#define ID_RES_200K (1 << 2)
93#define ID_RES_102K (1 << 1)
94#define ID_RES_GND (1 << 0)
95
96#define POWER_CTRL 0xAC
David Brownell9ebd9612008-12-18 12:25:44 -080097#define POWER_CTRL_OTG_ENAB (1 << 5)
98
99#define OTHER_IFC_CTRL2 0xAF
David Brownell9ebd9612008-12-18 12:25:44 -0800100#define OTHER_IFC_CTRL2_ULPI_STP_LOW (1 << 4)
101#define OTHER_IFC_CTRL2_ULPI_TXEN_POL (1 << 3)
102#define OTHER_IFC_CTRL2_ULPI_4PIN_2430 (1 << 2)
103#define OTHER_IFC_CTRL2_USB_INT_OUTSEL_MASK (3 << 0) /* bits 0 and 1 */
104#define OTHER_IFC_CTRL2_USB_INT_OUTSEL_INT1N (0 << 0)
105#define OTHER_IFC_CTRL2_USB_INT_OUTSEL_INT2N (1 << 0)
106
107#define REG_CTRL_EN 0xB2
David Brownell9ebd9612008-12-18 12:25:44 -0800108#define REG_CTRL_ERROR 0xB5
109#define ULPI_I2C_CONFLICT_INTEN (1 << 0)
110
111#define OTHER_FUNC_CTRL2 0xB8
David Brownell9ebd9612008-12-18 12:25:44 -0800112#define OTHER_FUNC_CTRL2_VBAT_TIMER_EN (1 << 0)
113
114/* following registers do not have separate _clr and _set registers */
115#define VBUS_DEBOUNCE 0xC0
116#define ID_DEBOUNCE 0xC1
117#define VBAT_TIMER 0xD3
118#define PHY_PWR_CTRL 0xFD
119#define PHY_PWR_PHYPWD (1 << 0)
120#define PHY_CLK_CTRL 0xFE
121#define PHY_CLK_CTRL_CLOCKGATING_EN (1 << 2)
122#define PHY_CLK_CTRL_CLK32K_EN (1 << 1)
123#define REQ_PHY_DPLL_CLK (1 << 0)
124#define PHY_CLK_CTRL_STS 0xFF
125#define PHY_DPLL_CLK (1 << 0)
126
Peter Ujfalusi9d94e162012-11-13 10:43:38 +0100127/* In module TWL_MODULE_PM_MASTER */
David Brownelldef6f8b2009-03-31 12:26:10 -0700128#define STS_HW_CONDITIONS 0x0F
David Brownell9ebd9612008-12-18 12:25:44 -0800129
Peter Ujfalusi9d94e162012-11-13 10:43:38 +0100130/* In module TWL_MODULE_PM_RECEIVER */
David Brownell9ebd9612008-12-18 12:25:44 -0800131#define VUSB_DEDICATED1 0x7D
132#define VUSB_DEDICATED2 0x7E
133#define VUSB1V5_DEV_GRP 0x71
134#define VUSB1V5_TYPE 0x72
135#define VUSB1V5_REMAP 0x73
136#define VUSB1V8_DEV_GRP 0x74
137#define VUSB1V8_TYPE 0x75
138#define VUSB1V8_REMAP 0x76
139#define VUSB3V1_DEV_GRP 0x77
140#define VUSB3V1_TYPE 0x78
141#define VUSB3V1_REMAP 0x79
142
143/* In module TWL4030_MODULE_INTBR */
144#define PMBR1 0x0D
145#define GPIO_USB_4PIN_ULPI_2430C (3 << 0)
146
NeilBrown56301df2015-04-16 18:03:04 +1000147/*
148 * If VBUS is valid or ID is ground, then we know a
149 * cable is present and we need to be runtime-enabled
150 */
Tony Lindgren80555552015-11-30 21:37:12 -0800151static inline bool cable_present(enum musb_vbus_id_status stat)
NeilBrown56301df2015-04-16 18:03:04 +1000152{
Tony Lindgren80555552015-11-30 21:37:12 -0800153 return stat == MUSB_VBUS_VALID ||
154 stat == MUSB_ID_GROUND;
NeilBrown56301df2015-04-16 18:03:04 +1000155}
156
David Brownell9ebd9612008-12-18 12:25:44 -0800157struct twl4030_usb {
Heikki Krogerus74d4aa42012-02-13 13:24:11 +0200158 struct usb_phy phy;
David Brownell9ebd9612008-12-18 12:25:44 -0800159 struct device *dev;
160
Jouni Hogander66760162009-02-20 14:02:31 +0200161 /* TWL4030 internal USB regulator supplies */
162 struct regulator *usb1v5;
163 struct regulator *usb1v8;
164 struct regulator *usb3v1;
165
David Brownell9ebd9612008-12-18 12:25:44 -0800166 /* for vbus reporting with irqs disabled */
Tony Lindgrendcc35b22014-08-27 16:28:11 -0700167 struct mutex lock;
David Brownell9ebd9612008-12-18 12:25:44 -0800168
169 /* pin configuration */
170 enum twl4030_usb_mode usb_mode;
171
172 int irq;
Tony Lindgren80555552015-11-30 21:37:12 -0800173 enum musb_vbus_id_status linkstat;
Matthias Kaehlckea87103a2011-04-01 23:02:07 +0200174 bool vbus_supplied;
Andreas Kemnade78489c72016-08-22 21:24:22 +0200175 bool musb_mailbox_pending;
Grazvydas Ignotas249751f2013-03-17 20:23:24 +0200176
177 struct delayed_work id_workaround_work;
David Brownell9ebd9612008-12-18 12:25:44 -0800178};
179
180/* internal define on top of container_of */
Heikki Krogerus74d4aa42012-02-13 13:24:11 +0200181#define phy_to_twl(x) container_of((x), struct twl4030_usb, phy)
David Brownell9ebd9612008-12-18 12:25:44 -0800182
183/*-------------------------------------------------------------------------*/
184
185static int twl4030_i2c_write_u8_verify(struct twl4030_usb *twl,
186 u8 module, u8 data, u8 address)
187{
Dan Carpenterdf674ef2017-06-30 11:01:47 +0300188 u8 check = 0xFF;
David Brownell9ebd9612008-12-18 12:25:44 -0800189
Balaji T Kfc7b92f2009-12-13 21:23:33 +0100190 if ((twl_i2c_write_u8(module, data, address) >= 0) &&
191 (twl_i2c_read_u8(module, &check, address) >= 0) &&
David Brownell9ebd9612008-12-18 12:25:44 -0800192 (check == data))
193 return 0;
194 dev_dbg(twl->dev, "Write%d[%d,0x%x] wrote %02x but read %02x\n",
195 1, module, address, check, data);
196
197 /* Failed once: Try again */
Balaji T Kfc7b92f2009-12-13 21:23:33 +0100198 if ((twl_i2c_write_u8(module, data, address) >= 0) &&
199 (twl_i2c_read_u8(module, &check, address) >= 0) &&
David Brownell9ebd9612008-12-18 12:25:44 -0800200 (check == data))
201 return 0;
202 dev_dbg(twl->dev, "Write%d[%d,0x%x] wrote %02x but read %02x\n",
203 2, module, address, check, data);
204
205 /* Failed again: Return error */
206 return -EBUSY;
207}
208
209#define twl4030_usb_write_verify(twl, address, data) \
Peter Ujfalusi9d94e162012-11-13 10:43:38 +0100210 twl4030_i2c_write_u8_verify(twl, TWL_MODULE_USB, (data), (address))
David Brownell9ebd9612008-12-18 12:25:44 -0800211
212static inline int twl4030_usb_write(struct twl4030_usb *twl,
213 u8 address, u8 data)
214{
215 int ret = 0;
216
Peter Ujfalusi9d94e162012-11-13 10:43:38 +0100217 ret = twl_i2c_write_u8(TWL_MODULE_USB, data, address);
David Brownell9ebd9612008-12-18 12:25:44 -0800218 if (ret < 0)
219 dev_dbg(twl->dev,
220 "TWL4030:USB:Write[0x%x] Error %d\n", address, ret);
221 return ret;
222}
223
224static inline int twl4030_readb(struct twl4030_usb *twl, u8 module, u8 address)
225{
226 u8 data;
227 int ret = 0;
228
Balaji T Kfc7b92f2009-12-13 21:23:33 +0100229 ret = twl_i2c_read_u8(module, &data, address);
David Brownell9ebd9612008-12-18 12:25:44 -0800230 if (ret >= 0)
231 ret = data;
232 else
233 dev_dbg(twl->dev,
234 "TWL4030:readb[0x%x,0x%x] Error %d\n",
235 module, address, ret);
236
237 return ret;
238}
239
240static inline int twl4030_usb_read(struct twl4030_usb *twl, u8 address)
241{
Peter Ujfalusi9d94e162012-11-13 10:43:38 +0100242 return twl4030_readb(twl, TWL_MODULE_USB, address);
David Brownell9ebd9612008-12-18 12:25:44 -0800243}
244
245/*-------------------------------------------------------------------------*/
246
247static inline int
248twl4030_usb_set_bits(struct twl4030_usb *twl, u8 reg, u8 bits)
249{
Heikki Krogerus92a6e6b2010-03-31 10:18:05 +0300250 return twl4030_usb_write(twl, ULPI_SET(reg), bits);
David Brownell9ebd9612008-12-18 12:25:44 -0800251}
252
253static inline int
254twl4030_usb_clear_bits(struct twl4030_usb *twl, u8 reg, u8 bits)
255{
Heikki Krogerus92a6e6b2010-03-31 10:18:05 +0300256 return twl4030_usb_write(twl, ULPI_CLR(reg), bits);
David Brownell9ebd9612008-12-18 12:25:44 -0800257}
258
259/*-------------------------------------------------------------------------*/
260
Grazvydas Ignotasf65f4f42013-03-24 17:36:53 +0200261static bool twl4030_is_driving_vbus(struct twl4030_usb *twl)
262{
263 int ret;
264
265 ret = twl4030_usb_read(twl, PHY_CLK_CTRL_STS);
266 if (ret < 0 || !(ret & PHY_DPLL_CLK))
267 /*
268 * if clocks are off, registers are not updated,
269 * but we can assume we don't drive VBUS in this case
270 */
271 return false;
272
273 ret = twl4030_usb_read(twl, ULPI_OTG_CTRL);
274 if (ret < 0)
275 return false;
276
277 return (ret & (ULPI_OTG_DRVVBUS | ULPI_OTG_CHRGVBUS)) ? true : false;
278}
279
Tony Lindgren80555552015-11-30 21:37:12 -0800280static enum musb_vbus_id_status
Kishon Vijay Abraham Ic9721432012-06-22 17:40:52 +0530281 twl4030_usb_linkstat(struct twl4030_usb *twl)
David Brownell9ebd9612008-12-18 12:25:44 -0800282{
283 int status;
Tony Lindgren80555552015-11-30 21:37:12 -0800284 enum musb_vbus_id_status linkstat = MUSB_UNKNOWN;
David Brownell9ebd9612008-12-18 12:25:44 -0800285
Matthias Kaehlckea87103a2011-04-01 23:02:07 +0200286 twl->vbus_supplied = false;
287
David Brownelldef6f8b2009-03-31 12:26:10 -0700288 /*
289 * For ID/VBUS sensing, see manual section 15.4.8 ...
290 * except when using only battery backup power, two
291 * comparators produce VBUS_PRES and ID_PRES signals,
292 * which don't match docs elsewhere. But ... BIT(7)
293 * and BIT(2) of STS_HW_CONDITIONS, respectively, do
294 * seem to match up. If either is true the USB_PRES
295 * signal is active, the OTG module is activated, and
296 * its interrupt may be raised (may wake the system).
297 */
Peter Ujfalusi9d94e162012-11-13 10:43:38 +0100298 status = twl4030_readb(twl, TWL_MODULE_PM_MASTER, STS_HW_CONDITIONS);
David Brownell9ebd9612008-12-18 12:25:44 -0800299 if (status < 0)
300 dev_err(twl->dev, "USB link status err %d\n", status);
David Brownelldef6f8b2009-03-31 12:26:10 -0700301 else if (status & (BIT(7) | BIT(2))) {
Grazvydas Ignotasf65f4f42013-03-24 17:36:53 +0200302 if (status & BIT(7)) {
303 if (twl4030_is_driving_vbus(twl))
304 status &= ~BIT(7);
305 else
306 twl->vbus_supplied = true;
307 }
Matthias Kaehlckea87103a2011-04-01 23:02:07 +0200308
David Brownelldef6f8b2009-03-31 12:26:10 -0700309 if (status & BIT(2))
Tony Lindgren80555552015-11-30 21:37:12 -0800310 linkstat = MUSB_ID_GROUND;
Grazvydas Ignotasf65f4f42013-03-24 17:36:53 +0200311 else if (status & BIT(7))
Tony Lindgren80555552015-11-30 21:37:12 -0800312 linkstat = MUSB_VBUS_VALID;
Grazvydas Ignotasf65f4f42013-03-24 17:36:53 +0200313 else
Tony Lindgren80555552015-11-30 21:37:12 -0800314 linkstat = MUSB_VBUS_OFF;
Kishon Vijay Abraham Ic9721432012-06-22 17:40:52 +0530315 } else {
Tony Lindgren80555552015-11-30 21:37:12 -0800316 if (twl->linkstat != MUSB_UNKNOWN)
317 linkstat = MUSB_VBUS_OFF;
Kishon Vijay Abraham Ic9721432012-06-22 17:40:52 +0530318 }
David Brownell9ebd9612008-12-18 12:25:44 -0800319
Matt Ranostay9d052aa2016-09-20 19:58:04 -0700320 kobject_uevent(&twl->dev->kobj, linkstat == MUSB_VBUS_VALID
321 ? KOBJ_ONLINE : KOBJ_OFFLINE);
322
David Brownell9ebd9612008-12-18 12:25:44 -0800323 dev_dbg(twl->dev, "HW_CONDITIONS 0x%02x/%d; link %d\n",
324 status, status, linkstat);
325
326 /* REVISIT this assumes host and peripheral controllers
327 * are registered, and that both are active...
328 */
329
David Brownell9ebd9612008-12-18 12:25:44 -0800330 return linkstat;
331}
332
333static void twl4030_usb_set_mode(struct twl4030_usb *twl, int mode)
334{
335 twl->usb_mode = mode;
336
337 switch (mode) {
338 case T2_USB_MODE_ULPI:
Heikki Krogerus92a6e6b2010-03-31 10:18:05 +0300339 twl4030_usb_clear_bits(twl, ULPI_IFC_CTRL,
340 ULPI_IFC_CTRL_CARKITMODE);
David Brownell9ebd9612008-12-18 12:25:44 -0800341 twl4030_usb_set_bits(twl, POWER_CTRL, POWER_CTRL_OTG_ENAB);
Heikki Krogerus92a6e6b2010-03-31 10:18:05 +0300342 twl4030_usb_clear_bits(twl, ULPI_FUNC_CTRL,
343 ULPI_FUNC_CTRL_XCVRSEL_MASK |
344 ULPI_FUNC_CTRL_OPMODE_MASK);
David Brownell9ebd9612008-12-18 12:25:44 -0800345 break;
346 case -1:
347 /* FIXME: power on defaults */
348 break;
349 default:
350 dev_err(twl->dev, "unsupported T2 transceiver mode %d\n",
351 mode);
352 break;
Sachin Kamated093e62014-02-03 13:55:04 +0530353 }
David Brownell9ebd9612008-12-18 12:25:44 -0800354}
355
356static void twl4030_i2c_access(struct twl4030_usb *twl, int on)
357{
358 unsigned long timeout;
359 int val = twl4030_usb_read(twl, PHY_CLK_CTRL);
360
361 if (val >= 0) {
362 if (on) {
363 /* enable DPLL to access PHY registers over I2C */
364 val |= REQ_PHY_DPLL_CLK;
365 WARN_ON(twl4030_usb_write_verify(twl, PHY_CLK_CTRL,
366 (u8)val) < 0);
367
368 timeout = jiffies + HZ;
369 while (!(twl4030_usb_read(twl, PHY_CLK_CTRL_STS) &
370 PHY_DPLL_CLK)
371 && time_before(jiffies, timeout))
372 udelay(10);
373 if (!(twl4030_usb_read(twl, PHY_CLK_CTRL_STS) &
374 PHY_DPLL_CLK))
375 dev_err(twl->dev, "Timeout setting T2 HSUSB "
376 "PHY DPLL clock\n");
377 } else {
378 /* let ULPI control the DPLL clock */
379 val &= ~REQ_PHY_DPLL_CLK;
380 WARN_ON(twl4030_usb_write_verify(twl, PHY_CLK_CTRL,
381 (u8)val) < 0);
382 }
383 }
384}
385
Ming Leifc8f2a72010-09-06 23:27:09 +0800386static void __twl4030_phy_power(struct twl4030_usb *twl, int on)
387{
388 u8 pwr = twl4030_usb_read(twl, PHY_PWR_CTRL);
389
390 if (on)
391 pwr &= ~PHY_PWR_PHYPWD;
392 else
393 pwr |= PHY_PWR_PHYPWD;
394
395 WARN_ON(twl4030_usb_write_verify(twl, PHY_PWR_CTRL, pwr) < 0);
396}
397
Arnd Bergmann8073fb82016-03-02 16:24:08 +0100398static int __maybe_unused twl4030_usb_runtime_suspend(struct device *dev)
Kishon Vijay Abraham I6747caa2013-09-27 11:53:27 +0530399{
Tony Lindgren96be39a2014-08-20 12:07:00 -0700400 struct twl4030_usb *twl = dev_get_drvdata(dev);
Kishon Vijay Abraham I6747caa2013-09-27 11:53:27 +0530401
Tony Lindgren96be39a2014-08-20 12:07:00 -0700402 dev_dbg(twl->dev, "%s\n", __func__);
Kishon Vijay Abraham If1ddc24c92013-09-27 11:53:31 +0530403
Tony Lindgrenbad8e332014-08-27 16:28:09 -0700404 __twl4030_phy_power(twl, 0);
405 regulator_disable(twl->usb1v5);
406 regulator_disable(twl->usb1v8);
407 regulator_disable(twl->usb3v1);
Tony Lindgren96be39a2014-08-20 12:07:00 -0700408
Kishon Vijay Abraham I6747caa2013-09-27 11:53:27 +0530409 return 0;
410}
411
Arnd Bergmann8073fb82016-03-02 16:24:08 +0100412static int __maybe_unused twl4030_usb_runtime_resume(struct device *dev)
Ming Leifc8f2a72010-09-06 23:27:09 +0800413{
Tony Lindgren96be39a2014-08-20 12:07:00 -0700414 struct twl4030_usb *twl = dev_get_drvdata(dev);
Tony Lindgrenbad8e332014-08-27 16:28:09 -0700415 int res;
Tony Lindgren96be39a2014-08-20 12:07:00 -0700416
417 dev_dbg(twl->dev, "%s\n", __func__);
Tony Lindgren96be39a2014-08-20 12:07:00 -0700418
Tony Lindgrenbad8e332014-08-27 16:28:09 -0700419 res = regulator_enable(twl->usb3v1);
420 if (res)
421 dev_err(twl->dev, "Failed to enable usb3v1\n");
422
423 res = regulator_enable(twl->usb1v8);
424 if (res)
425 dev_err(twl->dev, "Failed to enable usb1v8\n");
426
427 /*
428 * Disabling usb3v1 regulator (= writing 0 to VUSB3V1_DEV_GRP
429 * in twl4030) resets the VUSB_DEDICATED2 register. This reset
430 * enables VUSB3V1_SLEEP bit that remaps usb3v1 ACTIVE state to
431 * SLEEP. We work around this by clearing the bit after usv3v1
432 * is re-activated. This ensures that VUSB3V1 is really active.
433 */
434 twl_i2c_write_u8(TWL_MODULE_PM_RECEIVER, 0, VUSB_DEDICATED2);
435
436 res = regulator_enable(twl->usb1v5);
437 if (res)
438 dev_err(twl->dev, "Failed to enable usb1v5\n");
439
440 __twl4030_phy_power(twl, 1);
441 twl4030_usb_write(twl, PHY_CLK_CTRL,
442 twl4030_usb_read(twl, PHY_CLK_CTRL) |
443 (PHY_CLK_CTRL_CLOCKGATING_EN |
444 PHY_CLK_CTRL_CLK32K_EN));
Tony Lindgren96be39a2014-08-20 12:07:00 -0700445
Andreas Kemnadeb78ea842016-08-25 00:27:59 +0200446 twl4030_i2c_access(twl, 1);
447 twl4030_usb_set_mode(twl, twl->usb_mode);
448 if (twl->usb_mode == T2_USB_MODE_ULPI)
449 twl4030_i2c_access(twl, 0);
450 /*
451 * According to the TPS65950 TRM, there has to be at least 50ms
452 * delay between setting POWER_CTRL_OTG_ENAB and enabling charging
453 * so wait here so that a fully enabled phy can be expected after
454 * resume
455 */
456 msleep(50);
Tony Lindgren96be39a2014-08-20 12:07:00 -0700457 return 0;
458}
459
460static int twl4030_phy_power_off(struct phy *phy)
461{
462 struct twl4030_usb *twl = phy_get_drvdata(phy);
463
464 dev_dbg(twl->dev, "%s\n", __func__);
Tony Lindgren96be39a2014-08-20 12:07:00 -0700465
466 return 0;
David Brownell9ebd9612008-12-18 12:25:44 -0800467}
468
Kishon Vijay Abraham If1ddc24c92013-09-27 11:53:31 +0530469static int twl4030_phy_power_on(struct phy *phy)
David Brownell9ebd9612008-12-18 12:25:44 -0800470{
Kishon Vijay Abraham If1ddc24c92013-09-27 11:53:31 +0530471 struct twl4030_usb *twl = phy_get_drvdata(phy);
472
Ming Leifc8f2a72010-09-06 23:27:09 +0800473 dev_dbg(twl->dev, "%s\n", __func__);
Tony Lindgren96be39a2014-08-20 12:07:00 -0700474 pm_runtime_get_sync(twl->dev);
Tony Lindgren12b7db22016-05-31 10:05:19 -0500475 schedule_delayed_work(&twl->id_workaround_work, HZ);
Tony Lindgrenf7c4a462016-11-16 13:21:27 -0600476 pm_runtime_mark_last_busy(twl->dev);
477 pm_runtime_put_autosuspend(twl->dev);
Grazvydas Ignotas249751f2013-03-17 20:23:24 +0200478
Kishon Vijay Abraham I6747caa2013-09-27 11:53:27 +0530479 return 0;
480}
481
Jouni Hogander66760162009-02-20 14:02:31 +0200482static int twl4030_usb_ldo_init(struct twl4030_usb *twl)
David Brownell9ebd9612008-12-18 12:25:44 -0800483{
484 /* Enable writing to power configuration registers */
Peter Ujfalusi9d94e162012-11-13 10:43:38 +0100485 twl_i2c_write_u8(TWL_MODULE_PM_MASTER, TWL4030_PM_MASTER_KEY_CFG1,
486 TWL4030_PM_MASTER_PROTECT_KEY);
Felipe Balbie7944d82010-08-18 09:19:37 +0300487
Peter Ujfalusi9d94e162012-11-13 10:43:38 +0100488 twl_i2c_write_u8(TWL_MODULE_PM_MASTER, TWL4030_PM_MASTER_KEY_CFG2,
489 TWL4030_PM_MASTER_PROTECT_KEY);
David Brownell9ebd9612008-12-18 12:25:44 -0800490
Ming Leifc8f2a72010-09-06 23:27:09 +0800491 /* Keep VUSB3V1 LDO in sleep state until VBUS/ID change detected*/
Peter Ujfalusi9d94e162012-11-13 10:43:38 +0100492 /*twl_i2c_write_u8(TWL_MODULE_PM_RECEIVER, 0, VUSB_DEDICATED2);*/
David Brownell9ebd9612008-12-18 12:25:44 -0800493
494 /* input to VUSB3V1 LDO is from VBAT, not VBUS */
Peter Ujfalusi9d94e162012-11-13 10:43:38 +0100495 twl_i2c_write_u8(TWL_MODULE_PM_RECEIVER, 0x14, VUSB_DEDICATED1);
David Brownell9ebd9612008-12-18 12:25:44 -0800496
Jouni Hogander66760162009-02-20 14:02:31 +0200497 /* Initialize 3.1V regulator */
Peter Ujfalusi9d94e162012-11-13 10:43:38 +0100498 twl_i2c_write_u8(TWL_MODULE_PM_RECEIVER, 0, VUSB3V1_DEV_GRP);
Jouni Hogander66760162009-02-20 14:02:31 +0200499
Kishon Vijay Abraham I91669022013-03-15 18:58:51 +0530500 twl->usb3v1 = devm_regulator_get(twl->dev, "usb3v1");
Jouni Hogander66760162009-02-20 14:02:31 +0200501 if (IS_ERR(twl->usb3v1))
502 return -ENODEV;
503
Peter Ujfalusi9d94e162012-11-13 10:43:38 +0100504 twl_i2c_write_u8(TWL_MODULE_PM_RECEIVER, 0, VUSB3V1_TYPE);
David Brownell9ebd9612008-12-18 12:25:44 -0800505
Jouni Hogander66760162009-02-20 14:02:31 +0200506 /* Initialize 1.5V regulator */
Peter Ujfalusi9d94e162012-11-13 10:43:38 +0100507 twl_i2c_write_u8(TWL_MODULE_PM_RECEIVER, 0, VUSB1V5_DEV_GRP);
Jouni Hogander66760162009-02-20 14:02:31 +0200508
Kishon Vijay Abraham I91669022013-03-15 18:58:51 +0530509 twl->usb1v5 = devm_regulator_get(twl->dev, "usb1v5");
Jouni Hogander66760162009-02-20 14:02:31 +0200510 if (IS_ERR(twl->usb1v5))
Kishon Vijay Abraham I91669022013-03-15 18:58:51 +0530511 return -ENODEV;
Jouni Hogander66760162009-02-20 14:02:31 +0200512
Peter Ujfalusi9d94e162012-11-13 10:43:38 +0100513 twl_i2c_write_u8(TWL_MODULE_PM_RECEIVER, 0, VUSB1V5_TYPE);
David Brownell9ebd9612008-12-18 12:25:44 -0800514
Jouni Hogander66760162009-02-20 14:02:31 +0200515 /* Initialize 1.8V regulator */
Peter Ujfalusi9d94e162012-11-13 10:43:38 +0100516 twl_i2c_write_u8(TWL_MODULE_PM_RECEIVER, 0, VUSB1V8_DEV_GRP);
Jouni Hogander66760162009-02-20 14:02:31 +0200517
Kishon Vijay Abraham I91669022013-03-15 18:58:51 +0530518 twl->usb1v8 = devm_regulator_get(twl->dev, "usb1v8");
Jouni Hogander66760162009-02-20 14:02:31 +0200519 if (IS_ERR(twl->usb1v8))
Kishon Vijay Abraham I91669022013-03-15 18:58:51 +0530520 return -ENODEV;
Jouni Hogander66760162009-02-20 14:02:31 +0200521
Peter Ujfalusi9d94e162012-11-13 10:43:38 +0100522 twl_i2c_write_u8(TWL_MODULE_PM_RECEIVER, 0, VUSB1V8_TYPE);
David Brownell9ebd9612008-12-18 12:25:44 -0800523
524 /* disable access to power configuration registers */
Peter Ujfalusi9d94e162012-11-13 10:43:38 +0100525 twl_i2c_write_u8(TWL_MODULE_PM_MASTER, 0,
526 TWL4030_PM_MASTER_PROTECT_KEY);
Jouni Hogander66760162009-02-20 14:02:31 +0200527
528 return 0;
David Brownell9ebd9612008-12-18 12:25:44 -0800529}
530
531static ssize_t twl4030_usb_vbus_show(struct device *dev,
532 struct device_attribute *attr, char *buf)
533{
534 struct twl4030_usb *twl = dev_get_drvdata(dev);
David Brownell9ebd9612008-12-18 12:25:44 -0800535 int ret = -EINVAL;
536
Tony Lindgrendcc35b22014-08-27 16:28:11 -0700537 mutex_lock(&twl->lock);
David Brownell9ebd9612008-12-18 12:25:44 -0800538 ret = sprintf(buf, "%s\n",
Matthias Kaehlckea87103a2011-04-01 23:02:07 +0200539 twl->vbus_supplied ? "on" : "off");
Tony Lindgrendcc35b22014-08-27 16:28:11 -0700540 mutex_unlock(&twl->lock);
David Brownell9ebd9612008-12-18 12:25:44 -0800541
542 return ret;
543}
544static DEVICE_ATTR(vbus, 0444, twl4030_usb_vbus_show, NULL);
545
546static irqreturn_t twl4030_usb_irq(int irq, void *_twl)
547{
548 struct twl4030_usb *twl = _twl;
Tony Lindgren80555552015-11-30 21:37:12 -0800549 enum musb_vbus_id_status status;
Grazvydas Ignotas249751f2013-03-17 20:23:24 +0200550 bool status_changed = false;
Tony Lindgren12b7db22016-05-31 10:05:19 -0500551 int err;
David Brownell9ebd9612008-12-18 12:25:44 -0800552
David Brownell9ebd9612008-12-18 12:25:44 -0800553 status = twl4030_usb_linkstat(twl);
Grazvydas Ignotas249751f2013-03-17 20:23:24 +0200554
Tony Lindgrendcc35b22014-08-27 16:28:11 -0700555 mutex_lock(&twl->lock);
Grazvydas Ignotas249751f2013-03-17 20:23:24 +0200556 if (status >= 0 && status != twl->linkstat) {
NeilBrown56301df2015-04-16 18:03:04 +1000557 status_changed =
558 cable_present(twl->linkstat) !=
559 cable_present(status);
Grazvydas Ignotas249751f2013-03-17 20:23:24 +0200560 twl->linkstat = status;
Grazvydas Ignotas249751f2013-03-17 20:23:24 +0200561 }
Tony Lindgrendcc35b22014-08-27 16:28:11 -0700562 mutex_unlock(&twl->lock);
Grazvydas Ignotas249751f2013-03-17 20:23:24 +0200563
564 if (status_changed) {
David Brownell9ebd9612008-12-18 12:25:44 -0800565 /* FIXME add a set_power() method so that B-devices can
566 * configure the charger appropriately. It's not always
567 * correct to consume VBUS power, and how much current to
568 * consume is a function of the USB configuration chosen
569 * by the host.
570 *
571 * REVISIT usb_gadget_vbus_connect(...) as needed, ditto
572 * its disconnect() sibling, when changing to/from the
573 * USB_LINK_VBUS state. musb_hdrc won't care until it
574 * starts to handle softconnect right.
575 */
NeilBrown56301df2015-04-16 18:03:04 +1000576 if (cable_present(status)) {
577 pm_runtime_get_sync(twl->dev);
Tony Lindgren96be39a2014-08-20 12:07:00 -0700578 } else {
NeilBrown56301df2015-04-16 18:03:04 +1000579 pm_runtime_mark_last_busy(twl->dev);
580 pm_runtime_put_autosuspend(twl->dev);
Tony Lindgren96be39a2014-08-20 12:07:00 -0700581 }
Andreas Kemnade78489c72016-08-22 21:24:22 +0200582 twl->musb_mailbox_pending = true;
583 }
584 if (twl->musb_mailbox_pending) {
Tony Lindgren12b7db22016-05-31 10:05:19 -0500585 err = musb_mailbox(status);
Andreas Kemnade78489c72016-08-22 21:24:22 +0200586 if (!err)
587 twl->musb_mailbox_pending = false;
David Brownell9ebd9612008-12-18 12:25:44 -0800588 }
Tony Lindgren85601b82014-08-24 17:44:22 +0530589
590 /* don't schedule during sleep - irq works right then */
Tony Lindgren80555552015-11-30 21:37:12 -0800591 if (status == MUSB_ID_GROUND && pm_runtime_active(twl->dev)) {
Tony Lindgren85601b82014-08-24 17:44:22 +0530592 cancel_delayed_work(&twl->id_workaround_work);
593 schedule_delayed_work(&twl->id_workaround_work, HZ);
594 }
595
596 if (irq)
597 sysfs_notify(&twl->dev->kobj, NULL, "vbus");
David Brownell9ebd9612008-12-18 12:25:44 -0800598
599 return IRQ_HANDLED;
600}
601
Grazvydas Ignotas249751f2013-03-17 20:23:24 +0200602static void twl4030_id_workaround_work(struct work_struct *work)
Ming Leifc8f2a72010-09-06 23:27:09 +0800603{
Grazvydas Ignotas249751f2013-03-17 20:23:24 +0200604 struct twl4030_usb *twl = container_of(work, struct twl4030_usb,
605 id_workaround_work.work);
Ming Leifc8f2a72010-09-06 23:27:09 +0800606
Tony Lindgren85601b82014-08-24 17:44:22 +0530607 twl4030_usb_irq(0, twl);
Grazvydas Ignotas249751f2013-03-17 20:23:24 +0200608}
609
Kishon Vijay Abraham If1ddc24c92013-09-27 11:53:31 +0530610static int twl4030_phy_init(struct phy *phy)
Ming Leifc8f2a72010-09-06 23:27:09 +0800611{
Kishon Vijay Abraham If1ddc24c92013-09-27 11:53:31 +0530612 struct twl4030_usb *twl = phy_get_drvdata(phy);
Ming Leifc8f2a72010-09-06 23:27:09 +0800613
Tony Lindgren96be39a2014-08-20 12:07:00 -0700614 pm_runtime_get_sync(twl->dev);
Tony Lindgren12b7db22016-05-31 10:05:19 -0500615 twl->linkstat = MUSB_UNKNOWN;
616 schedule_delayed_work(&twl->id_workaround_work, HZ);
Tony Lindgren96be39a2014-08-20 12:07:00 -0700617 pm_runtime_mark_last_busy(twl->dev);
618 pm_runtime_put_autosuspend(twl->dev);
619
Kishon Vijay Abraham I817e5f32013-03-15 18:58:52 +0530620 return 0;
Ming Leifc8f2a72010-09-06 23:27:09 +0800621}
622
Heikki Krogerus74d4aa42012-02-13 13:24:11 +0200623static int twl4030_set_peripheral(struct usb_otg *otg,
624 struct usb_gadget *gadget)
David Brownell9ebd9612008-12-18 12:25:44 -0800625{
Heikki Krogerus74d4aa42012-02-13 13:24:11 +0200626 if (!otg)
David Brownell9ebd9612008-12-18 12:25:44 -0800627 return -ENODEV;
628
Heikki Krogerus74d4aa42012-02-13 13:24:11 +0200629 otg->gadget = gadget;
David Brownell9ebd9612008-12-18 12:25:44 -0800630 if (!gadget)
Felipe Balbi8b9ca272014-11-07 09:06:04 -0600631 otg->state = OTG_STATE_UNDEFINED;
David Brownell9ebd9612008-12-18 12:25:44 -0800632
633 return 0;
634}
635
Heikki Krogerus74d4aa42012-02-13 13:24:11 +0200636static int twl4030_set_host(struct usb_otg *otg, struct usb_bus *host)
David Brownell9ebd9612008-12-18 12:25:44 -0800637{
Heikki Krogerus74d4aa42012-02-13 13:24:11 +0200638 if (!otg)
David Brownell9ebd9612008-12-18 12:25:44 -0800639 return -ENODEV;
640
Heikki Krogerus74d4aa42012-02-13 13:24:11 +0200641 otg->host = host;
David Brownell9ebd9612008-12-18 12:25:44 -0800642 if (!host)
Felipe Balbi8b9ca272014-11-07 09:06:04 -0600643 otg->state = OTG_STATE_UNDEFINED;
David Brownell9ebd9612008-12-18 12:25:44 -0800644
645 return 0;
646}
647
Kishon Vijay Abraham I6747caa2013-09-27 11:53:27 +0530648static const struct phy_ops ops = {
649 .init = twl4030_phy_init,
650 .power_on = twl4030_phy_power_on,
651 .power_off = twl4030_phy_power_off,
652 .owner = THIS_MODULE,
653};
654
Tony Lindgren96be39a2014-08-20 12:07:00 -0700655static const struct dev_pm_ops twl4030_usb_pm_ops = {
656 SET_RUNTIME_PM_OPS(twl4030_usb_runtime_suspend,
657 twl4030_usb_runtime_resume, NULL)
658};
659
Bill Pemberton41ac7b32012-11-19 13:21:48 -0500660static int twl4030_usb_probe(struct platform_device *pdev)
David Brownell9ebd9612008-12-18 12:25:44 -0800661{
Jingoo Han19f9e182013-07-30 17:02:13 +0900662 struct twl4030_usb_data *pdata = dev_get_platdata(&pdev->dev);
David Brownell9ebd9612008-12-18 12:25:44 -0800663 struct twl4030_usb *twl;
Kishon Vijay Abraham I6747caa2013-09-27 11:53:27 +0530664 struct phy *phy;
Jouni Hogander66760162009-02-20 14:02:31 +0200665 int status, err;
Heikki Krogerus74d4aa42012-02-13 13:24:11 +0200666 struct usb_otg *otg;
Kishon Vijay Abraham If8515f02012-09-06 20:27:09 +0530667 struct device_node *np = pdev->dev.of_node;
Kishon Vijay Abraham I6747caa2013-09-27 11:53:27 +0530668 struct phy_provider *phy_provider;
David Brownell9ebd9612008-12-18 12:25:44 -0800669
Sachin Kamatb6d790f2014-02-03 13:55:03 +0530670 twl = devm_kzalloc(&pdev->dev, sizeof(*twl), GFP_KERNEL);
David Brownell9ebd9612008-12-18 12:25:44 -0800671 if (!twl)
672 return -ENOMEM;
673
Kishon Vijay Abraham If8515f02012-09-06 20:27:09 +0530674 if (np)
675 of_property_read_u32(np, "usb_mode",
676 (enum twl4030_usb_mode *)&twl->usb_mode);
Kishon Vijay Abraham I6747caa2013-09-27 11:53:27 +0530677 else if (pdata) {
Kishon Vijay Abraham If8515f02012-09-06 20:27:09 +0530678 twl->usb_mode = pdata->usb_mode;
Kishon Vijay Abraham I6747caa2013-09-27 11:53:27 +0530679 } else {
Kishon Vijay Abraham If8515f02012-09-06 20:27:09 +0530680 dev_err(&pdev->dev, "twl4030 initialized without pdata\n");
681 return -EINVAL;
682 }
683
Sachin Kamatb6d790f2014-02-03 13:55:03 +0530684 otg = devm_kzalloc(&pdev->dev, sizeof(*otg), GFP_KERNEL);
Kishon Vijay Abraham Ib8a3efa2012-06-22 17:40:55 +0530685 if (!otg)
Heikki Krogerus74d4aa42012-02-13 13:24:11 +0200686 return -ENOMEM;
Heikki Krogerus74d4aa42012-02-13 13:24:11 +0200687
David Brownell9ebd9612008-12-18 12:25:44 -0800688 twl->dev = &pdev->dev;
689 twl->irq = platform_get_irq(pdev, 0);
Matthias Kaehlckea87103a2011-04-01 23:02:07 +0200690 twl->vbus_supplied = false;
Tony Lindgren80555552015-11-30 21:37:12 -0800691 twl->linkstat = MUSB_UNKNOWN;
Andreas Kemnade78489c72016-08-22 21:24:22 +0200692 twl->musb_mailbox_pending = false;
Heikki Krogerus74d4aa42012-02-13 13:24:11 +0200693
694 twl->phy.dev = twl->dev;
695 twl->phy.label = "twl4030";
696 twl->phy.otg = otg;
Kishon Vijay Abraham Ic11747f2013-01-25 08:03:24 +0530697 twl->phy.type = USB_PHY_TYPE_USB2;
Heikki Krogerus74d4aa42012-02-13 13:24:11 +0200698
Felipe Balbi8b9ca272014-11-07 09:06:04 -0600699 otg->usb_phy = &twl->phy;
Heikki Krogerus74d4aa42012-02-13 13:24:11 +0200700 otg->set_host = twl4030_set_host;
701 otg->set_peripheral = twl4030_set_peripheral;
David Brownell9ebd9612008-12-18 12:25:44 -0800702
Heikki Krogerusdbc98632014-11-19 17:28:21 +0200703 phy = devm_phy_create(twl->dev, NULL, &ops);
Kishon Vijay Abraham I6747caa2013-09-27 11:53:27 +0530704 if (IS_ERR(phy)) {
705 dev_dbg(&pdev->dev, "Failed to create PHY\n");
706 return PTR_ERR(phy);
707 }
708
709 phy_set_drvdata(phy, twl);
710
Kishon Vijay Abraham I64fe1892014-02-17 14:29:25 +0530711 phy_provider = devm_of_phy_provider_register(twl->dev,
712 of_phy_simple_xlate);
713 if (IS_ERR(phy_provider))
714 return PTR_ERR(phy_provider);
715
Tony Lindgrendcc35b22014-08-27 16:28:11 -0700716 /* init mutex for workqueue */
717 mutex_init(&twl->lock);
David Brownell9ebd9612008-12-18 12:25:44 -0800718
Grazvydas Ignotas249751f2013-03-17 20:23:24 +0200719 INIT_DELAYED_WORK(&twl->id_workaround_work, twl4030_id_workaround_work);
720
Jouni Hogander66760162009-02-20 14:02:31 +0200721 err = twl4030_usb_ldo_init(twl);
722 if (err) {
723 dev_err(&pdev->dev, "ldo init failed\n");
Jouni Hogander66760162009-02-20 14:02:31 +0200724 return err;
725 }
Kishon Vijay Abraham Ic11747f2013-01-25 08:03:24 +0530726 usb_add_phy_dev(&twl->phy);
David Brownell9ebd9612008-12-18 12:25:44 -0800727
728 platform_set_drvdata(pdev, twl);
729 if (device_create_file(&pdev->dev, &dev_attr_vbus))
730 dev_warn(&pdev->dev, "could not create sysfs file\n");
731
Pali Rohár80d2e762013-09-18 19:03:33 +0200732 ATOMIC_INIT_NOTIFIER_HEAD(&twl->phy.notifier);
733
Tony Lindgren96be39a2014-08-20 12:07:00 -0700734 pm_runtime_use_autosuspend(&pdev->dev);
735 pm_runtime_set_autosuspend_delay(&pdev->dev, 2000);
736 pm_runtime_enable(&pdev->dev);
Tony Lindgren58a66db2015-11-30 21:39:54 -0800737 pm_runtime_get_sync(&pdev->dev);
Tony Lindgren96be39a2014-08-20 12:07:00 -0700738
David Brownell9ebd9612008-12-18 12:25:44 -0800739 /* Our job is to use irqs and status from the power module
740 * to keep the transceiver disabled when nothing's connected.
741 *
742 * FIXME we actually shouldn't start enabling it until the
743 * USB controller drivers have said they're ready, by calling
744 * set_host() and/or set_peripheral() ... OTG_capable boards
745 * need both handles, otherwise just one suffices.
746 */
Kishon Vijay Abraham I91669022013-03-15 18:58:51 +0530747 status = devm_request_threaded_irq(twl->dev, twl->irq, NULL,
748 twl4030_usb_irq, IRQF_TRIGGER_FALLING |
749 IRQF_TRIGGER_RISING | IRQF_ONESHOT, "twl4030_usb", twl);
David Brownell9ebd9612008-12-18 12:25:44 -0800750 if (status < 0) {
751 dev_dbg(&pdev->dev, "can't get IRQ %d, err %d\n",
752 twl->irq, status);
David Brownell9ebd9612008-12-18 12:25:44 -0800753 return status;
754 }
755
Heikki Krogerus61211b12014-11-19 17:28:19 +0200756 if (pdata)
757 err = phy_create_lookup(phy, "usb", "musb-hdrc.0");
758 if (err)
759 return err;
760
Tony Lindgren96be39a2014-08-20 12:07:00 -0700761 pm_runtime_mark_last_busy(&pdev->dev);
762 pm_runtime_put_autosuspend(twl->dev);
763
David Brownell9ebd9612008-12-18 12:25:44 -0800764 dev_info(&pdev->dev, "Initialized TWL4030 USB module\n");
765 return 0;
766}
767
Dmitry Torokhov39d35682013-02-24 00:55:07 -0800768static int twl4030_usb_remove(struct platform_device *pdev)
David Brownell9ebd9612008-12-18 12:25:44 -0800769{
770 struct twl4030_usb *twl = platform_get_drvdata(pdev);
771 int val;
772
Tony Lindgrenb241d312015-11-30 21:39:53 -0800773 usb_remove_phy(&twl->phy);
Tony Lindgren96be39a2014-08-20 12:07:00 -0700774 pm_runtime_get_sync(twl->dev);
Grazvydas Ignotas249751f2013-03-17 20:23:24 +0200775 cancel_delayed_work(&twl->id_workaround_work);
David Brownell9ebd9612008-12-18 12:25:44 -0800776 device_remove_file(twl->dev, &dev_attr_vbus);
777
778 /* set transceiver mode to power on defaults */
779 twl4030_usb_set_mode(twl, -1);
780
Tony Lindgren58a66db2015-11-30 21:39:54 -0800781 /* idle ulpi before powering off */
782 if (cable_present(twl->linkstat))
783 pm_runtime_put_noidle(twl->dev);
784 pm_runtime_mark_last_busy(twl->dev);
Tony Lindgren12b7db22016-05-31 10:05:19 -0500785 pm_runtime_dont_use_autosuspend(&pdev->dev);
786 pm_runtime_put_sync(twl->dev);
Tony Lindgren58a66db2015-11-30 21:39:54 -0800787 pm_runtime_disable(twl->dev);
788
David Brownell9ebd9612008-12-18 12:25:44 -0800789 /* autogate 60MHz ULPI clock,
790 * clear dpll clock request for i2c access,
791 * disable 32KHz
792 */
793 val = twl4030_usb_read(twl, PHY_CLK_CTRL);
794 if (val >= 0) {
795 val |= PHY_CLK_CTRL_CLOCKGATING_EN;
796 val &= ~(PHY_CLK_CTRL_CLK32K_EN | REQ_PHY_DPLL_CLK);
797 twl4030_usb_write(twl, PHY_CLK_CTRL, (u8)val);
798 }
799
800 /* disable complete OTG block */
801 twl4030_usb_clear_bits(twl, POWER_CTRL, POWER_CTRL_OTG_ENAB);
NeilBrown56301df2015-04-16 18:03:04 +1000802
David Brownell9ebd9612008-12-18 12:25:44 -0800803 return 0;
804}
805
Kishon Vijay Abraham If8515f02012-09-06 20:27:09 +0530806#ifdef CONFIG_OF
807static const struct of_device_id twl4030_usb_id_table[] = {
808 { .compatible = "ti,twl4030-usb" },
809 {}
810};
811MODULE_DEVICE_TABLE(of, twl4030_usb_id_table);
812#endif
813
David Brownell9ebd9612008-12-18 12:25:44 -0800814static struct platform_driver twl4030_usb_driver = {
815 .probe = twl4030_usb_probe,
Dmitry Torokhov39d35682013-02-24 00:55:07 -0800816 .remove = twl4030_usb_remove,
David Brownell9ebd9612008-12-18 12:25:44 -0800817 .driver = {
818 .name = "twl4030_usb",
Tony Lindgren96be39a2014-08-20 12:07:00 -0700819 .pm = &twl4030_usb_pm_ops,
Kishon Vijay Abraham If8515f02012-09-06 20:27:09 +0530820 .of_match_table = of_match_ptr(twl4030_usb_id_table),
David Brownell9ebd9612008-12-18 12:25:44 -0800821 },
822};
823
824static int __init twl4030_usb_init(void)
825{
826 return platform_driver_register(&twl4030_usb_driver);
827}
828subsys_initcall(twl4030_usb_init);
829
830static void __exit twl4030_usb_exit(void)
831{
832 platform_driver_unregister(&twl4030_usb_driver);
833}
834module_exit(twl4030_usb_exit);
835
836MODULE_ALIAS("platform:twl4030_usb");
837MODULE_AUTHOR("Texas Instruments, Inc, Nokia Corporation");
838MODULE_DESCRIPTION("TWL4030 USB transceiver driver");
839MODULE_LICENSE("GPL");