Lines Matching full:cdns
27 * @cdns: pointer to context structure
32 int cdns3_set_mode(struct cdns3 *cdns, enum usb_dr_mode mode) in cdns3_set_mode() argument
43 dev_dbg(cdns->dev, "Set controller to OTG mode\n"); in cdns3_set_mode()
44 if (cdns->version == CDNS3_CONTROLLER_V1) { in cdns3_set_mode()
45 reg = readl(&cdns->otg_v1_regs->override); in cdns3_set_mode()
47 writel(reg, &cdns->otg_v1_regs->override); in cdns3_set_mode()
49 reg = readl(&cdns->otg_v0_regs->ctrl1); in cdns3_set_mode()
51 writel(reg, &cdns->otg_v0_regs->ctrl1); in cdns3_set_mode()
62 dev_err(cdns->dev, "Unsupported mode of operation %d\n", mode); in cdns3_set_mode()
69 int cdns3_get_id(struct cdns3 *cdns) in cdns3_get_id() argument
73 id = readl(&cdns->otg_regs->sts) & OTGSTS_ID_VALUE; in cdns3_get_id()
74 dev_dbg(cdns->dev, "OTG ID: %d", id); in cdns3_get_id()
79 int cdns3_get_vbus(struct cdns3 *cdns) in cdns3_get_vbus() argument
83 vbus = !!(readl(&cdns->otg_regs->sts) & OTGSTS_VBUS_VALID); in cdns3_get_vbus()
84 dev_dbg(cdns->dev, "OTG VBUS: %d", vbus); in cdns3_get_vbus()
89 int cdns3_is_host(struct cdns3 *cdns) in cdns3_is_host() argument
91 if (cdns->dr_mode == USB_DR_MODE_HOST) in cdns3_is_host()
93 else if (!cdns3_get_id(cdns)) in cdns3_is_host()
99 int cdns3_is_device(struct cdns3 *cdns) in cdns3_is_device() argument
101 if (cdns->dr_mode == USB_DR_MODE_PERIPHERAL) in cdns3_is_device()
103 else if (cdns->dr_mode == USB_DR_MODE_OTG) in cdns3_is_device()
104 if (cdns3_get_id(cdns)) in cdns3_is_device()
112 * @cdns: Pointer to controller context structure
117 int cdns3_drd_switch_host(struct cdns3 *cdns, int on) in cdns3_drd_switch_host() argument
124 writel(OTGCMD_HOST_BUS_REQ | reg, &cdns->otg_regs->cmd); in cdns3_drd_switch_host()
126 dev_dbg(cdns->dev, "Waiting till Host mode is turned on\n"); in cdns3_drd_switch_host()
127 ret = readl_poll_timeout_atomic(&cdns->otg_regs->sts, val, in cdns3_drd_switch_host()
131 dev_err(cdns->dev, "timeout waiting for xhci_ready\n"); in cdns3_drd_switch_host()
137 &cdns->otg_regs->cmd); in cdns3_drd_switch_host()
139 readl_poll_timeout_atomic(&cdns->otg_regs->state, val, in cdns3_drd_switch_host()
149 * @cdns: Pointer to controller context structure
154 int cdns3_drd_switch_gadget(struct cdns3 *cdns, int on) in cdns3_drd_switch_gadget() argument
161 writel(OTGCMD_DEV_BUS_REQ | reg, &cdns->otg_regs->cmd); in cdns3_drd_switch_gadget()
163 dev_dbg(cdns->dev, "Waiting till Device mode is turned on\n"); in cdns3_drd_switch_gadget()
165 ret = readl_poll_timeout_atomic(&cdns->otg_regs->sts, val, in cdns3_drd_switch_gadget()
169 dev_err(cdns->dev, "timeout waiting for dev_ready\n"); in cdns3_drd_switch_gadget()
180 &cdns->otg_regs->cmd); in cdns3_drd_switch_gadget()
182 readl_poll_timeout_atomic(&cdns->otg_regs->state, val, in cdns3_drd_switch_gadget()
192 * @cdns: Pointer to controller context structure
196 static int cdns3_init_otg_mode(struct cdns3 *cdns) in cdns3_init_otg_mode() argument
201 writel(~0, &cdns->otg_regs->ivect); in cdns3_init_otg_mode()
203 ret = cdns3_set_mode(cdns, USB_DR_MODE_OTG); in cdns3_init_otg_mode()
212 * @cdns: Pointer to controller context structure
216 int cdns3_drd_update_mode(struct cdns3 *cdns) in cdns3_drd_update_mode() argument
220 switch (cdns->dr_mode) { in cdns3_drd_update_mode()
222 ret = cdns3_set_mode(cdns, USB_DR_MODE_PERIPHERAL); in cdns3_drd_update_mode()
225 ret = cdns3_set_mode(cdns, USB_DR_MODE_HOST); in cdns3_drd_update_mode()
228 ret = cdns3_init_otg_mode(cdns); in cdns3_drd_update_mode()
231 dev_err(cdns->dev, "Unsupported mode of operation %d\n", in cdns3_drd_update_mode()
232 cdns->dr_mode); in cdns3_drd_update_mode()
239 int cdns3_drd_init(struct cdns3 *cdns) in cdns3_drd_init() argument
245 regs = dev_remap_addr_name(cdns->dev, "otg"); in cdns3_drd_init()
258 cdns->otg_v0_regs = regs; in cdns3_drd_init()
259 if (!readl(&cdns->otg_v0_regs->cmd)) { in cdns3_drd_init()
260 cdns->version = CDNS3_CONTROLLER_V0; in cdns3_drd_init()
261 cdns->otg_v1_regs = NULL; in cdns3_drd_init()
262 cdns->otg_regs = regs; in cdns3_drd_init()
263 writel(1, &cdns->otg_v0_regs->simulate); in cdns3_drd_init()
264 dev_info(cdns->dev, "DRD version v0 (%08x)\n", in cdns3_drd_init()
265 readl(&cdns->otg_v0_regs->version)); in cdns3_drd_init()
267 cdns->otg_v0_regs = NULL; in cdns3_drd_init()
268 cdns->otg_v1_regs = regs; in cdns3_drd_init()
269 cdns->otg_regs = (void *)&cdns->otg_v1_regs->cmd; in cdns3_drd_init()
270 cdns->version = CDNS3_CONTROLLER_V1; in cdns3_drd_init()
271 writel(1, &cdns->otg_v1_regs->simulate); in cdns3_drd_init()
272 dev_info(cdns->dev, "DRD version v1 (ID: %08x, rev: %08x)\n", in cdns3_drd_init()
273 readl(&cdns->otg_v1_regs->did), in cdns3_drd_init()
274 readl(&cdns->otg_v1_regs->rid)); in cdns3_drd_init()
277 state = OTGSTS_STRAP(readl(&cdns->otg_regs->sts)); in cdns3_drd_init()
280 cdns->dr_mode = USB_DR_MODE_OTG; in cdns3_drd_init()
282 dev_dbg(cdns->dev, "Controller strapped to HOST\n"); in cdns3_drd_init()
283 cdns->dr_mode = USB_DR_MODE_HOST; in cdns3_drd_init()
285 dev_dbg(cdns->dev, "Controller strapped to PERIPHERAL\n"); in cdns3_drd_init()
286 cdns->dr_mode = USB_DR_MODE_PERIPHERAL; in cdns3_drd_init()
289 state = readl(&cdns->otg_regs->sts); in cdns3_drd_init()
291 dev_err(cdns->dev, "Cadence USB3 OTG device not ready\n"); in cdns3_drd_init()
298 int cdns3_drd_exit(struct cdns3 *cdns) in cdns3_drd_exit() argument