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>
20 #include <linux/ulpi/interface.h>
35 #define ID_ID				0x0
36 #define ID_HWGENERAL			0x4
37 #define ID_HWHOST			0x8
38 #define ID_HWDEVICE			0xc
39 #define ID_HWTXBUF			0x10
40 #define ID_HWRXBUF			0x14
41 #define ID_SBUSCFG			0x90
77  * struct ci_hw_ep - endpoint representation
110 	CI_ROLE_HOST = 0,
128  * struct ci_role_driver - host/gadget role driver
146  * struct hw_bank - hardware register mapping representation
166  * struct ci_hdrc - chipidea device representation
173  * @is_otg: if the device is otg-capable
195  * @remote_wakeup: host-enabled remote wakeup
200  * @ulpi: pointer to ULPI device, if any
201  * @ulpi_ops: ULPI read/write ops for this device
254 	struct ulpi			*ulpi;  member
274 	BUG_ON(ci->role >= CI_ROLE_END || !ci->roles[ci->role]);  in ci_role()
275 	return ci->roles[ci->role];  in ci_role()
283 		return -EINVAL;  in ci_role_start()
285 	if (!ci->roles[role])  in ci_role_start()
286 		return -ENXIO;  in ci_role_start()
288 	ret = ci->roles[role]->start(ci);  in ci_role_start()
292 	ci->role = role;  in ci_role_start()
294 	if (ci->usb_phy) {  in ci_role_start()
296 			usb_phy_set_event(ci->usb_phy, USB_EVENT_ID);  in ci_role_start()
299 			usb_phy_set_event(ci->usb_phy, USB_EVENT_NONE);  in ci_role_start()
307 	enum ci_role role = ci->role;  in ci_role_stop()
312 	ci->role = CI_ROLE_END;  in ci_role_stop()
314 	ci->roles[role]->stop(ci);  in ci_role_stop()
316 	if (ci->usb_phy)  in ci_role_stop()
317 		usb_phy_set_event(ci->usb_phy, USB_EVENT_NONE);  in ci_role_stop()
322 	if (ci->role == CI_ROLE_HOST)  in ci_role_to_usb_role()
324 	else if (ci->role == CI_ROLE_GADGET && ci->vbus_active)  in ci_role_to_usb_role()
350 	return ioread32(ci->hw_bank.abs + offset) & mask;  in hw_read_id_reg()
364 		data = (ioread32(ci->hw_bank.abs + offset) & ~mask)  in hw_write_id_reg()
367 	iowrite32(data, ci->hw_bank.abs + offset);  in hw_write_id_reg()
380 	return ioread32(ci->hw_bank.regmap[reg]) & mask;  in hw_read()
386 	__asm__ ("swp %0, %0, [%1]" : : "r"(val), "r"(addr));  in imx28_ci_writel()
397 	if (ci->imx28_write_fix)  in __hw_write()
414 		data = (ioread32(ci->hw_bank.regmap[reg]) & ~mask)  in hw_write()
417 	__hw_write(ci, data, ci->hw_bank.regmap[reg]);  in hw_write()
431 	u32 val = ioread32(ci->hw_bank.regmap[reg]) & mask;  in hw_test_and_clear()
433 	__hw_write(ci, val, ci->hw_bank.regmap[reg]);  in hw_test_and_clear()
449 	u32 val = hw_read(ci, reg, ~0);  in hw_test_and_write()
464 	struct usb_otg_caps *otg_caps = &ci->platdata->ci_otg_caps;  in ci_otg_is_fsm_mode()
466 	return ci->is_otg && ci->roles[CI_ROLE_HOST] &&  in ci_otg_is_fsm_mode()
467 		ci->roles[CI_ROLE_GADGET] && (otg_caps->srp_support ||  in ci_otg_is_fsm_mode()
468 		otg_caps->hnp_support || otg_caps->adp_support);  in ci_otg_is_fsm_mode()