Lines Matching +full:otg +full:- +full:id
1 // SPDX-License-Identifier: GPL-2.0
5 * Copyright (C) 2018-2019 Cadence.
17 #include <linux/usb/otg.h>
25 * cdns3_set_mode - change mode of OTG Core
41 dev_dbg(cdns->dev, "Set controller to OTG mode\n"); in cdns3_set_mode()
42 if (cdns->version == CDNS3_CONTROLLER_V1) { in cdns3_set_mode()
43 reg = readl(&cdns->otg_v1_regs->override); in cdns3_set_mode()
45 writel(reg, &cdns->otg_v1_regs->override); in cdns3_set_mode()
53 if (cdns->phyrst_a_enable) { in cdns3_set_mode()
54 reg = readl(&cdns->otg_v1_regs->phyrst_cfg); in cdns3_set_mode()
56 writel(reg, &cdns->otg_v1_regs->phyrst_cfg); in cdns3_set_mode()
59 reg = readl(&cdns->otg_v0_regs->ctrl1); in cdns3_set_mode()
61 writel(reg, &cdns->otg_v0_regs->ctrl1); in cdns3_set_mode()
72 dev_err(cdns->dev, "Unsupported mode of operation %d\n", mode); in cdns3_set_mode()
73 return -EINVAL; in cdns3_set_mode()
81 int id; in cdns3_get_id() local
83 id = readl(&cdns->otg_regs->sts) & OTGSTS_ID_VALUE; in cdns3_get_id()
84 dev_dbg(cdns->dev, "OTG ID: %d", id); in cdns3_get_id()
86 return id; in cdns3_get_id()
93 vbus = !!(readl(&cdns->otg_regs->sts) & OTGSTS_VBUS_VALID); in cdns3_get_vbus()
94 dev_dbg(cdns->dev, "OTG VBUS: %d", vbus); in cdns3_get_vbus()
101 if (cdns->dr_mode == USB_DR_MODE_HOST) in cdns3_is_host()
111 if (cdns->dr_mode == USB_DR_MODE_PERIPHERAL) in cdns3_is_device()
113 else if (cdns->dr_mode == USB_DR_MODE_OTG) in cdns3_is_device()
121 * cdns3_otg_disable_irq - Disable all OTG interrupts
126 writel(0, &cdns->otg_regs->ien); in cdns3_otg_disable_irq()
130 * cdns3_otg_enable_irq - enable id and sess_valid interrupts
136 OTGIEN_VBUSVALID_FALL_INT, &cdns->otg_regs->ien); in cdns3_otg_enable_irq()
140 * cdns3_drd_host_on - start host.
152 &cdns->otg_regs->cmd); in cdns3_drd_host_on()
154 dev_dbg(cdns->dev, "Waiting till Host mode is turned on\n"); in cdns3_drd_host_on()
155 ret = readl_poll_timeout_atomic(&cdns->otg_regs->sts, val, in cdns3_drd_host_on()
159 dev_err(cdns->dev, "timeout waiting for xhci_ready\n"); in cdns3_drd_host_on()
161 phy_set_mode(cdns->usb3_phy, PHY_MODE_USB_HOST); in cdns3_drd_host_on()
166 * cdns3_drd_host_off - stop host.
175 &cdns->otg_regs->cmd); in cdns3_drd_host_off()
178 readl_poll_timeout_atomic(&cdns->otg_regs->state, val, in cdns3_drd_host_off()
181 phy_set_mode(cdns->usb3_phy, PHY_MODE_INVALID); in cdns3_drd_host_off()
185 * cdns3_drd_gadget_on - start gadget.
195 /* switch OTG core */ in cdns3_drd_gadget_on()
196 writel(OTGCMD_DEV_BUS_REQ | reg, &cdns->otg_regs->cmd); in cdns3_drd_gadget_on()
198 dev_dbg(cdns->dev, "Waiting till Device mode is turned on\n"); in cdns3_drd_gadget_on()
200 ret = readl_poll_timeout_atomic(&cdns->otg_regs->sts, val, in cdns3_drd_gadget_on()
204 dev_err(cdns->dev, "timeout waiting for dev_ready\n"); in cdns3_drd_gadget_on()
208 phy_set_mode(cdns->usb3_phy, PHY_MODE_USB_DEVICE); in cdns3_drd_gadget_on()
213 * cdns3_drd_gadget_off - stop gadget.
222 * before turning-off Device (DEV_BUS_DROP). in cdns3_drd_gadget_off()
227 &cdns->otg_regs->cmd); in cdns3_drd_gadget_off()
229 readl_poll_timeout_atomic(&cdns->otg_regs->state, val, in cdns3_drd_gadget_off()
232 phy_set_mode(cdns->usb3_phy, PHY_MODE_INVALID); in cdns3_drd_gadget_off()
236 * cdns3_init_otg_mode - initialize drd controller
247 writel(~0, &cdns->otg_regs->ivect); in cdns3_init_otg_mode()
259 * cdns3_drd_update_mode - initialize mode of operation
268 switch (cdns->dr_mode) { in cdns3_drd_update_mode()
279 dev_err(cdns->dev, "Unsupported mode of operation %d\n", in cdns3_drd_update_mode()
280 cdns->dr_mode); in cdns3_drd_update_mode()
281 return -EINVAL; in cdns3_drd_update_mode()
297 * cdns3_drd_irq - interrupt handler for OTG events
310 if (cdns->dr_mode != USB_DR_MODE_OTG) in cdns3_drd_irq()
313 if (cdns->in_lpm) in cdns3_drd_irq()
316 reg = readl(&cdns->otg_regs->ivect); in cdns3_drd_irq()
322 dev_dbg(cdns->dev, "OTG IRQ: new ID: %d\n", in cdns3_drd_irq()
329 dev_dbg(cdns->dev, "OTG IRQ: new VBUS: %d\n", in cdns3_drd_irq()
335 writel(~0, &cdns->otg_regs->ivect); in cdns3_drd_irq()
345 regs = devm_ioremap_resource(cdns->dev, &cdns->otg_res); in cdns3_drd_init()
354 * the first register contains device ID number which is not set to 0. in cdns3_drd_init()
358 cdns->otg_v0_regs = regs; in cdns3_drd_init()
359 if (!readl(&cdns->otg_v0_regs->cmd)) { in cdns3_drd_init()
360 cdns->version = CDNS3_CONTROLLER_V0; in cdns3_drd_init()
361 cdns->otg_v1_regs = NULL; in cdns3_drd_init()
362 cdns->otg_regs = regs; in cdns3_drd_init()
363 writel(1, &cdns->otg_v0_regs->simulate); in cdns3_drd_init()
364 dev_dbg(cdns->dev, "DRD version v0 (%08x)\n", in cdns3_drd_init()
365 readl(&cdns->otg_v0_regs->version)); in cdns3_drd_init()
367 cdns->otg_v0_regs = NULL; in cdns3_drd_init()
368 cdns->otg_v1_regs = regs; in cdns3_drd_init()
369 cdns->otg_regs = (void *)&cdns->otg_v1_regs->cmd; in cdns3_drd_init()
370 cdns->version = CDNS3_CONTROLLER_V1; in cdns3_drd_init()
371 writel(1, &cdns->otg_v1_regs->simulate); in cdns3_drd_init()
372 dev_dbg(cdns->dev, "DRD version v1 (ID: %08x, rev: %08x)\n", in cdns3_drd_init()
373 readl(&cdns->otg_v1_regs->did), in cdns3_drd_init()
374 readl(&cdns->otg_v1_regs->rid)); in cdns3_drd_init()
377 state = OTGSTS_STRAP(readl(&cdns->otg_regs->sts)); in cdns3_drd_init()
380 cdns->dr_mode = USB_DR_MODE_OTG; in cdns3_drd_init()
382 dev_dbg(cdns->dev, "Controller strapped to HOST\n"); in cdns3_drd_init()
383 cdns->dr_mode = USB_DR_MODE_HOST; in cdns3_drd_init()
385 dev_dbg(cdns->dev, "Controller strapped to PERIPHERAL\n"); in cdns3_drd_init()
386 cdns->dr_mode = USB_DR_MODE_PERIPHERAL; in cdns3_drd_init()
389 ret = devm_request_threaded_irq(cdns->dev, cdns->otg_irq, in cdns3_drd_init()
393 dev_name(cdns->dev), cdns); in cdns3_drd_init()
395 dev_err(cdns->dev, "couldn't get otg_irq\n"); in cdns3_drd_init()
399 state = readl(&cdns->otg_regs->sts); in cdns3_drd_init()
401 dev_err(cdns->dev, "Cadence USB3 OTG device not ready\n"); in cdns3_drd_init()
402 return -ENODEV; in cdns3_drd_init()