1 // SPDX-License-Identifier: GPL-2.0
3  * MUSB OTG driver virtual root hub support
6  * Copyright (C) 2005-2006 by Texas Instruments
7  * Copyright (C) 2006-2007 Nokia Corporation
29 	spin_lock_irqsave(&musb->lock, flags);  in musb_host_finish_resume()
31 	power = musb_readb(musb->mregs, MUSB_POWER);  in musb_host_finish_resume()
34 	musb_writeb(musb->mregs, MUSB_POWER, power);  in musb_host_finish_resume()
41 	musb->is_active = 1;  in musb_host_finish_resume()
42 	musb->port1_status &= ~(USB_PORT_STAT_SUSPEND | MUSB_PORT_STAT_RESUME);  in musb_host_finish_resume()
43 	musb->port1_status |= USB_PORT_STAT_C_SUSPEND << 16;  in musb_host_finish_resume()
44 	usb_hcd_poll_rh_status(musb->hcd);  in musb_host_finish_resume()
48 	spin_unlock_irqrestore(&musb->lock, flags);  in musb_host_finish_resume()
54 	void __iomem	*mbase = musb->mregs;  in musb_port_suspend()
69 			return -EBUSY;  in musb_port_suspend()
79 				if (retries-- < 1)  in musb_port_suspend()
86 		musb->port1_status |= USB_PORT_STAT_SUSPEND;  in musb_port_suspend()
87 		switch (musb_get_state(musb)) {  in musb_port_suspend()
90 			musb->is_active = musb->xceiv &&  in musb_port_suspend()
91 				musb->xceiv->otg->host->b_hnp_enable;  in musb_port_suspend()
92 			if (musb->is_active)  in musb_port_suspend()
93 				mod_timer(&musb->otg_timer, jiffies  in musb_port_suspend()
100 			musb->is_active = musb->xceiv &&  in musb_port_suspend()
101 				musb->xceiv->otg->host->b_hnp_enable;  in musb_port_suspend()
115 		musb->port1_status |= MUSB_PORT_STAT_RESUME;  in musb_port_suspend()
116 		schedule_delayed_work(&musb->finish_resume_work,  in musb_port_suspend()
125 	void __iomem	*mbase = musb->mregs;  in musb_port_reset()
129 		musb->port1_status &= ~USB_PORT_STAT_RESET;  in musb_port_reset()
149 			long remain = (unsigned long) musb->rh_timer - jiffies;  in musb_port_reset()
151 			if (musb->rh_timer > 0 && remain > 0) {  in musb_port_reset()
154 					&musb->deassert_reset_work, remain);  in musb_port_reset()
162 			schedule_delayed_work(&musb->deassert_reset_work,  in musb_port_reset()
171 		musb->port1_status |= USB_PORT_STAT_RESET;  in musb_port_reset()
172 		musb->port1_status &= ~USB_PORT_STAT_ENABLE;  in musb_port_reset()
173 		schedule_delayed_work(&musb->deassert_reset_work,  in musb_port_reset()
184 			musb_dbg(musb, "high-speed device connected");  in musb_port_reset()
185 			musb->port1_status |= USB_PORT_STAT_HIGH_SPEED;  in musb_port_reset()
188 		musb->port1_status &= ~USB_PORT_STAT_RESET;  in musb_port_reset()
189 		musb->port1_status |= USB_PORT_STAT_ENABLE  in musb_port_reset()
192 		usb_hcd_poll_rh_status(musb->hcd);  in musb_port_reset()
194 		musb->vbuserr_retry = VBUSERR_RETRY_COUNT;  in musb_port_reset()
200 	musb->port1_status = USB_PORT_STAT_POWER  in musb_root_disconnect()
203 	usb_hcd_poll_rh_status(musb->hcd);  in musb_root_disconnect()
204 	musb->is_active = 0;  in musb_root_disconnect()
206 	switch (musb_get_state(musb)) {  in musb_root_disconnect()
208 		if (musb->xceiv && musb->xceiv->otg->host->b_hnp_enable) {  in musb_root_disconnect()
210 			musb->g.is_a_peripheral = 1;  in musb_root_disconnect()
216 		musb->is_active = 0;  in musb_root_disconnect()
229 /*---------------------------------------------------------------------*/
231 /* Caller may or may not hold musb->lock */
238 	if (musb->port1_status & 0xffff0000) {  in musb_hub_status_data()
248 	 * In host-only mode we start a connection right away. In OTG mode  in musb_has_gadget()
256 	return musb->port_mode == MUSB_HOST;  in musb_has_gadget()
274 	spin_lock_irqsave(&musb->lock, flags);  in musb_hub_control()
277 		spin_unlock_irqrestore(&musb->lock, flags);  in musb_hub_control()
278 		return -ESHUTDOWN;  in musb_hub_control()
285 	switch (typeReq) {  in musb_hub_control()
288 		switch (wValue) {  in musb_hub_control()
300 		switch (wValue) {  in musb_hub_control()
307 			if (!hcd->self.is_b_host)  in musb_hub_control()
320 		musb->port1_status &= ~(1 << wValue);  in musb_hub_control()
326 		desc->bDescLength = 9;  in musb_hub_control()
327 		desc->bDescriptorType = USB_DT_HUB;  in musb_hub_control()
328 		desc->bNbrPorts = 1;  in musb_hub_control()
329 		desc->wHubCharacteristics = cpu_to_le16(  in musb_hub_control()
330 			HUB_CHAR_INDV_PORT_LPSM /* per-port power switching */  in musb_hub_control()
333 		desc->bPwrOn2PwrGood = 5;	/* msec/2 */  in musb_hub_control()
334 		desc->bHubContrCurrent = 0;  in musb_hub_control()
337 		desc->u.hs.DeviceRemovable[0] = 0x02;	/* port 1 */  in musb_hub_control()
338 		desc->u.hs.DeviceRemovable[1] = 0xff;  in musb_hub_control()
349 		put_unaligned(cpu_to_le32(musb->port1_status  in musb_hub_control()
354 		musb_dbg(musb, "port status %08x", musb->port1_status);  in musb_hub_control()
360 		switch (wValue) {  in musb_hub_control()
364 			 * magic side effects from incompletely-described  in musb_hub_control()
369 			 * initialization logic, e.g. for OTG, or change any  in musb_hub_control()
370 			 * logic relating to VBUS power-up.  in musb_hub_control()
372 			if (!hcd->self.is_b_host && musb_has_gadget(musb))  in musb_hub_control()
386 			switch (wIndex) {  in musb_hub_control()
409 				musb_writeb(musb->mregs, MUSB_DEVCTL,  in musb_hub_control()
419 			musb_writeb(musb->mregs, MUSB_TESTMODE, temp);  in musb_hub_control()
425 		musb->port1_status |= 1 << wValue;  in musb_hub_control()
431 		retval = -EPIPE;  in musb_hub_control()
433 	spin_unlock_irqrestore(&musb->lock, flags);  in musb_hub_control()