Lines Matching defs:cdns
25 * @cdns: pointer to context structure
30 static int cdns3_set_mode(struct cdns3 *cdns, enum usb_dr_mode mode)
41 dev_dbg(cdns->dev, "Set controller to OTG mode\n");
43 if (cdns->version == CDNSP_CONTROLLER_V2)
44 override_reg = &cdns->otg_cdnsp_regs->override;
45 else if (cdns->version == CDNS3_CONTROLLER_V1)
46 override_reg = &cdns->otg_v1_regs->override;
48 override_reg = &cdns->otg_v0_regs->ctrl1;
52 if (cdns->version != CDNS3_CONTROLLER_V0)
59 if (cdns->version == CDNS3_CONTROLLER_V1) {
66 if (cdns->phyrst_a_enable) {
67 reg = readl(&cdns->otg_v1_regs->phyrst_cfg);
69 writel(reg, &cdns->otg_v1_regs->phyrst_cfg);
81 dev_err(cdns->dev, "Unsupported mode of operation %d\n", mode);
88 int cdns3_get_id(struct cdns3 *cdns)
92 id = readl(&cdns->otg_regs->sts) & OTGSTS_ID_VALUE;
93 dev_dbg(cdns->dev, "OTG ID: %d", id);
98 int cdns3_get_vbus(struct cdns3 *cdns)
102 vbus = !!(readl(&cdns->otg_regs->sts) & OTGSTS_VBUS_VALID);
103 dev_dbg(cdns->dev, "OTG VBUS: %d", vbus);
108 bool cdns3_is_host(struct cdns3 *cdns)
110 if (cdns->dr_mode == USB_DR_MODE_HOST)
112 else if (cdns3_get_id(cdns) == CDNS3_ID_HOST)
118 bool cdns3_is_device(struct cdns3 *cdns)
120 if (cdns->dr_mode == USB_DR_MODE_PERIPHERAL)
122 else if (cdns->dr_mode == USB_DR_MODE_OTG)
123 if (cdns3_get_id(cdns) == CDNS3_ID_PERIPHERAL)
131 * @cdns: Pointer to controller context structure
133 static void cdns3_otg_disable_irq(struct cdns3 *cdns)
135 writel(0, &cdns->otg_irq_regs->ien);
140 * @cdns: Pointer to controller context structure
142 static void cdns3_otg_enable_irq(struct cdns3 *cdns)
145 OTGIEN_VBUSVALID_FALL_INT, &cdns->otg_irq_regs->ien);
150 * @cdns: Pointer to controller context structure.
154 int cdns3_drd_host_on(struct cdns3 *cdns)
161 &cdns->otg_regs->cmd);
163 if (cdns->version == CDNSP_CONTROLLER_V2)
168 dev_dbg(cdns->dev, "Waiting till Host mode is turned on\n");
169 ret = readl_poll_timeout_atomic(&cdns->otg_regs->sts, val,
173 dev_err(cdns->dev, "timeout waiting for xhci_ready\n");
175 phy_set_mode(cdns->usb3_phy, PHY_MODE_USB_HOST);
181 * @cdns: Pointer to controller context structure.
183 void cdns3_drd_host_off(struct cdns3 *cdns)
189 &cdns->otg_regs->cmd);
192 readl_poll_timeout_atomic(&cdns->otg_regs->state, val,
195 phy_set_mode(cdns->usb3_phy, PHY_MODE_INVALID);
200 * @cdns: Pointer to controller context structure.
204 int cdns3_drd_gadget_on(struct cdns3 *cdns)
211 writel(OTGCMD_DEV_BUS_REQ | reg, &cdns->otg_regs->cmd);
213 dev_dbg(cdns->dev, "Waiting till Device mode is turned on\n");
215 if (cdns->version == CDNSP_CONTROLLER_V2)
220 ret = readl_poll_timeout_atomic(&cdns->otg_regs->sts, val,
223 dev_err(cdns->dev, "timeout waiting for dev_ready\n");
227 phy_set_mode(cdns->usb3_phy, PHY_MODE_USB_DEVICE);
233 * @cdns: Pointer to controller context structure.
235 void cdns3_drd_gadget_off(struct cdns3 *cdns)
246 &cdns->otg_regs->cmd);
248 readl_poll_timeout_atomic(&cdns->otg_regs->state, val,
251 phy_set_mode(cdns->usb3_phy, PHY_MODE_INVALID);
256 * @cdns: Pointer to controller context structure
260 static int cdns3_init_otg_mode(struct cdns3 *cdns)
264 cdns3_otg_disable_irq(cdns);
266 writel(~0, &cdns->otg_irq_regs->ivect);
268 ret = cdns3_set_mode(cdns, USB_DR_MODE_OTG);
272 cdns3_otg_enable_irq(cdns);
279 * @cdns: Pointer to controller context structure
283 int cdns3_drd_update_mode(struct cdns3 *cdns)
287 switch (cdns->dr_mode) {
289 ret = cdns3_set_mode(cdns, USB_DR_MODE_PERIPHERAL);
292 ret = cdns3_set_mode(cdns, USB_DR_MODE_HOST);
295 ret = cdns3_init_otg_mode(cdns);
298 dev_err(cdns->dev, "Unsupported mode of operation %d\n",
299 cdns->dr_mode);
308 struct cdns3 *cdns = data;
310 cdns3_hw_role_switch(cdns);
326 struct cdns3 *cdns = data;
329 if (cdns->dr_mode != USB_DR_MODE_OTG)
332 if (cdns->in_lpm)
335 reg = readl(&cdns->otg_irq_regs->ivect);
341 dev_dbg(cdns->dev, "OTG IRQ: new ID: %d\n",
342 cdns3_get_id(cdns));
348 dev_dbg(cdns->dev, "OTG IRQ: new VBUS: %d\n",
349 cdns3_get_vbus(cdns));
354 writel(~0, &cdns->otg_irq_regs->ivect);
358 int cdns3_drd_init(struct cdns3 *cdns)
364 regs = devm_ioremap_resource(cdns->dev, &cdns->otg_res);
377 cdns->otg_v0_regs = regs;
378 if (!readl(&cdns->otg_v0_regs->cmd)) {
379 cdns->version = CDNS3_CONTROLLER_V0;
380 cdns->otg_v1_regs = NULL;
381 cdns->otg_cdnsp_regs = NULL;
382 cdns->otg_regs = regs;
383 cdns->otg_irq_regs = (struct cdns3_otg_irq_regs *)
384 &cdns->otg_v0_regs->ien;
385 writel(1, &cdns->otg_v0_regs->simulate);
386 dev_dbg(cdns->dev, "DRD version v0 (%08x)\n",
387 readl(&cdns->otg_v0_regs->version));
389 cdns->otg_v0_regs = NULL;
390 cdns->otg_v1_regs = regs;
391 cdns->otg_cdnsp_regs = regs;
393 cdns->otg_regs = (void *)&cdns->otg_v1_regs->cmd;
395 if (cdns->otg_cdnsp_regs->did == OTG_CDNSP_DID) {
396 cdns->otg_irq_regs = (struct cdns3_otg_irq_regs *)
397 &cdns->otg_cdnsp_regs->ien;
398 cdns->version = CDNSP_CONTROLLER_V2;
400 cdns->otg_irq_regs = (struct cdns3_otg_irq_regs *)
401 &cdns->otg_v1_regs->ien;
402 writel(1, &cdns->otg_v1_regs->simulate);
403 cdns->version = CDNS3_CONTROLLER_V1;
406 dev_dbg(cdns->dev, "DRD version v1 (ID: %08x, rev: %08x)\n",
407 readl(&cdns->otg_v1_regs->did),
408 readl(&cdns->otg_v1_regs->rid));
411 state = OTGSTS_STRAP(readl(&cdns->otg_regs->sts));
414 cdns->dr_mode = USB_DR_MODE_OTG;
416 if ((cdns->version == CDNSP_CONTROLLER_V2 &&
418 (cdns->version != CDNSP_CONTROLLER_V2 &&
420 dev_dbg(cdns->dev, "Controller strapped to HOST\n");
421 cdns->dr_mode = USB_DR_MODE_HOST;
422 } else if ((cdns->version == CDNSP_CONTROLLER_V2 &&
424 (cdns->version != CDNSP_CONTROLLER_V2 &&
426 dev_dbg(cdns->dev, "Controller strapped to PERIPHERAL\n");
427 cdns->dr_mode = USB_DR_MODE_PERIPHERAL;
430 ret = devm_request_threaded_irq(cdns->dev, cdns->otg_irq,
434 dev_name(cdns->dev), cdns);
436 dev_err(cdns->dev, "couldn't get otg_irq\n");
440 state = readl(&cdns->otg_regs->sts);
442 dev_err(cdns->dev, "Cadence USB3 OTG device not ready\n");
449 int cdns3_drd_exit(struct cdns3 *cdns)
451 cdns3_otg_disable_irq(cdns);