1 /* SPDX-License-Identifier: GPL-2.0 */
3  * ci.h - common structures, functions, and macros of the ChipIdea driver
5  * Copyright (C) 2008 Chipidea - MIPS Technologies, Inc. All rights reserved.
17 #include <linux/usb/otg-fsm.h>
18 #include <linux/usb/otg.h>
75  * struct ci_hw_ep - endpoint representation
126  * struct ci_role_driver - host/gadget role driver
140  * struct hw_bank - hardware register mapping representation
160  * struct ci_hdrc - chipidea device representation
167  * @is_otg: if the device is otg-capable
168  * @fsm: otg finite state machine
169  * @otg_fsm_hrtimer: hrtimer for otg fsm timers
170  * @hr_timeouts: time out list for active otg fsm timers
171  * @enabled_otg_timer_bits: bits of enabled otg timers
188  * @remote_wakeup: host-enabled remote wakeup
206  * @rev: The revision number for controller
217 	struct usb_otg			otg;  member
260 	enum ci_revision		rev;  member
266 	BUG_ON(ci->role >= CI_ROLE_END || !ci->roles[ci->role]);  in ci_role()
267 	return ci->roles[ci->role];  in ci_role()
275 		return -EINVAL;  in ci_role_start()
277 	if (!ci->roles[role])  in ci_role_start()
278 		return -ENXIO;  in ci_role_start()
280 	ret = ci->roles[role]->start(ci);  in ci_role_start()
282 		ci->role = role;  in ci_role_start()
288 	enum ci_role role = ci->role;  in ci_role_stop()
293 	ci->role = CI_ROLE_END;  in ci_role_stop()
295 	ci->roles[role]->stop(ci);  in ci_role_stop()
300 	if (ci->role == CI_ROLE_HOST)  in ci_role_to_usb_role()
302 	else if (ci->role == CI_ROLE_GADGET && ci->vbus_active)  in ci_role_to_usb_role()
328 	return ioread32(ci->hw_bank.abs + offset) & mask;  in hw_read_id_reg()
342 		data = (ioread32(ci->hw_bank.abs + offset) & ~mask)  in hw_write_id_reg()
345 	iowrite32(data, ci->hw_bank.abs + offset);  in hw_write_id_reg()
358 	return ioread32(ci->hw_bank.regmap[reg]) & mask;  in hw_read()
375 	if (ci->imx28_write_fix)  in __hw_write()
392 		data = (ioread32(ci->hw_bank.regmap[reg]) & ~mask)  in hw_write()
395 	__hw_write(ci, data, ci->hw_bank.regmap[reg]);  in hw_write()
409 	u32 val = ioread32(ci->hw_bank.regmap[reg]) & mask;  in hw_test_and_clear()
411 	__hw_write(ci, val, ci->hw_bank.regmap[reg]);  in hw_test_and_clear()
434  * ci_otg_is_fsm_mode: runtime check if otg controller
435  * is in otg fsm mode.
442 	struct usb_otg_caps *otg_caps = &ci->platdata->ci_otg_caps;  in ci_otg_is_fsm_mode()
444 	return ci->is_otg && ci->roles[CI_ROLE_HOST] &&  in ci_otg_is_fsm_mode()
445 		ci->roles[CI_ROLE_GADGET] && (otg_caps->srp_support ||  in ci_otg_is_fsm_mode()
446 		otg_caps->hnp_support || otg_caps->adp_support);  in ci_otg_is_fsm_mode()