Lines Matching +full:otg +full:- +full:rev
1 // SPDX-License-Identifier: GPL-2.0
5 * Copyright (C) 2018-2020 Cadence.
16 #include <linux/usb/otg.h>
24 * cdns3_set_mode - change mode of OTG Core
41 dev_dbg(cdns->dev, "Set controller to OTG mode\n"); in cdns3_set_mode()
43 if (cdns->version == CDNSP_CONTROLLER_V2) in cdns3_set_mode()
44 override_reg = &cdns->otg_cdnsp_regs->override; in cdns3_set_mode()
45 else if (cdns->version == CDNS3_CONTROLLER_V1) in cdns3_set_mode()
46 override_reg = &cdns->otg_v1_regs->override; in cdns3_set_mode()
48 override_reg = &cdns->otg_v0_regs->ctrl1; in cdns3_set_mode()
52 if (cdns->version != CDNS3_CONTROLLER_V0) in cdns3_set_mode()
59 if (cdns->version == CDNS3_CONTROLLER_V1) { in cdns3_set_mode()
66 if (cdns->phyrst_a_enable) { in cdns3_set_mode()
67 reg = readl(&cdns->otg_v1_regs->phyrst_cfg); in cdns3_set_mode()
69 writel(reg, &cdns->otg_v1_regs->phyrst_cfg); in cdns3_set_mode()
81 dev_err(cdns->dev, "Unsupported mode of operation %d\n", mode); in cdns3_set_mode()
82 return -EINVAL; in cdns3_set_mode()
92 id = readl(&cdns->otg_regs->sts) & OTGSTS_ID_VALUE; in cdns3_get_id()
93 dev_dbg(cdns->dev, "OTG ID: %d", id); in cdns3_get_id()
102 vbus = !!(readl(&cdns->otg_regs->sts) & OTGSTS_VBUS_VALID); in cdns3_get_vbus()
103 dev_dbg(cdns->dev, "OTG VBUS: %d", vbus); in cdns3_get_vbus()
110 if (cdns->dr_mode == USB_DR_MODE_HOST) in cdns3_is_host()
120 if (cdns->dr_mode == USB_DR_MODE_PERIPHERAL) in cdns3_is_device()
122 else if (cdns->dr_mode == USB_DR_MODE_OTG) in cdns3_is_device()
130 * cdns3_otg_disable_irq - Disable all OTG interrupts
135 writel(0, &cdns->otg_irq_regs->ien); in cdns3_otg_disable_irq()
139 * cdns3_otg_enable_irq - enable id and sess_valid interrupts
145 OTGIEN_VBUSVALID_FALL_INT, &cdns->otg_irq_regs->ien); in cdns3_otg_enable_irq()
149 * cdns3_drd_host_on - start host.
161 &cdns->otg_regs->cmd); in cdns3_drd_host_on()
163 if (cdns->version == CDNSP_CONTROLLER_V2) in cdns3_drd_host_on()
168 dev_dbg(cdns->dev, "Waiting till Host mode is turned on\n"); in cdns3_drd_host_on()
169 ret = readl_poll_timeout_atomic(&cdns->otg_regs->sts, val, in cdns3_drd_host_on()
173 dev_err(cdns->dev, "timeout waiting for xhci_ready\n"); in cdns3_drd_host_on()
175 phy_set_mode(cdns->usb3_phy, PHY_MODE_USB_HOST); in cdns3_drd_host_on()
180 * cdns3_drd_host_off - stop host.
189 &cdns->otg_regs->cmd); in cdns3_drd_host_off()
192 readl_poll_timeout_atomic(&cdns->otg_regs->state, val, in cdns3_drd_host_off()
195 phy_set_mode(cdns->usb3_phy, PHY_MODE_INVALID); in cdns3_drd_host_off()
199 * cdns3_drd_gadget_on - start gadget.
210 /* switch OTG core */ in cdns3_drd_gadget_on()
211 writel(OTGCMD_DEV_BUS_REQ | reg, &cdns->otg_regs->cmd); in cdns3_drd_gadget_on()
213 dev_dbg(cdns->dev, "Waiting till Device mode is turned on\n"); in cdns3_drd_gadget_on()
215 if (cdns->version == CDNSP_CONTROLLER_V2) in cdns3_drd_gadget_on()
220 ret = readl_poll_timeout_atomic(&cdns->otg_regs->sts, val, in cdns3_drd_gadget_on()
223 dev_err(cdns->dev, "timeout waiting for dev_ready\n"); in cdns3_drd_gadget_on()
227 phy_set_mode(cdns->usb3_phy, PHY_MODE_USB_DEVICE); in cdns3_drd_gadget_on()
232 * cdns3_drd_gadget_off - stop gadget.
241 * before turning-off Device (DEV_BUS_DROP). in cdns3_drd_gadget_off()
246 &cdns->otg_regs->cmd); in cdns3_drd_gadget_off()
248 readl_poll_timeout_atomic(&cdns->otg_regs->state, val, in cdns3_drd_gadget_off()
251 phy_set_mode(cdns->usb3_phy, PHY_MODE_INVALID); in cdns3_drd_gadget_off()
255 * cdns3_init_otg_mode - initialize drd controller
266 writel(~0, &cdns->otg_irq_regs->ivect); in cdns3_init_otg_mode()
278 * cdns3_drd_update_mode - initialize mode of operation
287 switch (cdns->dr_mode) { in cdns3_drd_update_mode()
298 dev_err(cdns->dev, "Unsupported mode of operation %d\n", in cdns3_drd_update_mode()
299 cdns->dr_mode); in cdns3_drd_update_mode()
300 return -EINVAL; in cdns3_drd_update_mode()
316 * cdns3_drd_irq - interrupt handler for OTG events
329 if (cdns->dr_mode != USB_DR_MODE_OTG) in cdns3_drd_irq()
332 if (cdns->in_lpm) in cdns3_drd_irq()
335 reg = readl(&cdns->otg_irq_regs->ivect); in cdns3_drd_irq()
341 dev_dbg(cdns->dev, "OTG IRQ: new ID: %d\n", in cdns3_drd_irq()
348 dev_dbg(cdns->dev, "OTG IRQ: new VBUS: %d\n", in cdns3_drd_irq()
354 writel(~0, &cdns->otg_irq_regs->ivect); in cdns3_drd_irq()
364 regs = devm_ioremap_resource(cdns->dev, &cdns->otg_res); in cdns3_drd_init()
377 cdns->otg_v0_regs = regs; in cdns3_drd_init()
378 if (!readl(&cdns->otg_v0_regs->cmd)) { in cdns3_drd_init()
379 cdns->version = CDNS3_CONTROLLER_V0; in cdns3_drd_init()
380 cdns->otg_v1_regs = NULL; in cdns3_drd_init()
381 cdns->otg_cdnsp_regs = NULL; in cdns3_drd_init()
382 cdns->otg_regs = regs; in cdns3_drd_init()
383 cdns->otg_irq_regs = (struct cdns3_otg_irq_regs *) in cdns3_drd_init()
384 &cdns->otg_v0_regs->ien; in cdns3_drd_init()
385 writel(1, &cdns->otg_v0_regs->simulate); in cdns3_drd_init()
386 dev_dbg(cdns->dev, "DRD version v0 (%08x)\n", in cdns3_drd_init()
387 readl(&cdns->otg_v0_regs->version)); in cdns3_drd_init()
389 cdns->otg_v0_regs = NULL; in cdns3_drd_init()
390 cdns->otg_v1_regs = regs; in cdns3_drd_init()
391 cdns->otg_cdnsp_regs = regs; in cdns3_drd_init()
393 cdns->otg_regs = (void *)&cdns->otg_v1_regs->cmd; in cdns3_drd_init()
395 if (cdns->otg_cdnsp_regs->did == OTG_CDNSP_DID) { in cdns3_drd_init()
396 cdns->otg_irq_regs = (struct cdns3_otg_irq_regs *) in cdns3_drd_init()
397 &cdns->otg_cdnsp_regs->ien; in cdns3_drd_init()
398 cdns->version = CDNSP_CONTROLLER_V2; in cdns3_drd_init()
400 cdns->otg_irq_regs = (struct cdns3_otg_irq_regs *) in cdns3_drd_init()
401 &cdns->otg_v1_regs->ien; in cdns3_drd_init()
402 writel(1, &cdns->otg_v1_regs->simulate); in cdns3_drd_init()
403 cdns->version = CDNS3_CONTROLLER_V1; in cdns3_drd_init()
406 dev_dbg(cdns->dev, "DRD version v1 (ID: %08x, rev: %08x)\n", in cdns3_drd_init()
407 readl(&cdns->otg_v1_regs->did), in cdns3_drd_init()
408 readl(&cdns->otg_v1_regs->rid)); in cdns3_drd_init()
411 state = OTGSTS_STRAP(readl(&cdns->otg_regs->sts)); in cdns3_drd_init()
414 cdns->dr_mode = USB_DR_MODE_OTG; in cdns3_drd_init()
416 if ((cdns->version == CDNSP_CONTROLLER_V2 && in cdns3_drd_init()
418 (cdns->version != CDNSP_CONTROLLER_V2 && in cdns3_drd_init()
420 dev_dbg(cdns->dev, "Controller strapped to HOST\n"); in cdns3_drd_init()
421 cdns->dr_mode = USB_DR_MODE_HOST; in cdns3_drd_init()
422 } else if ((cdns->version == CDNSP_CONTROLLER_V2 && in cdns3_drd_init()
424 (cdns->version != CDNSP_CONTROLLER_V2 && in cdns3_drd_init()
426 dev_dbg(cdns->dev, "Controller strapped to PERIPHERAL\n"); in cdns3_drd_init()
427 cdns->dr_mode = USB_DR_MODE_PERIPHERAL; in cdns3_drd_init()
430 ret = devm_request_threaded_irq(cdns->dev, cdns->otg_irq, in cdns3_drd_init()
434 dev_name(cdns->dev), cdns); in cdns3_drd_init()
436 dev_err(cdns->dev, "couldn't get otg_irq\n"); in cdns3_drd_init()
440 state = readl(&cdns->otg_regs->sts); in cdns3_drd_init()
442 dev_err(cdns->dev, "Cadence USB3 OTG device not ready\n"); in cdns3_drd_init()
443 return -ENODEV; in cdns3_drd_init()