4  * SPDX-License-Identifier: Apache-2.0
30  * The new Atmel DFP headers provide mode-specific interrupt register field
54 BUILD_ASSERT(USB_MAXIMUM_SPEED, "low-speed is not supported");
75 	PMC->CKGR_UCKR |= CKGR_UCKR_UPLLEN;  in usb_dc_enable_clock()
78 	while (!(PMC->PMC_SR & PMC_SR_LOCKU)) {  in usb_dc_enable_clock()
83 	if ((USBHS->USBHS_DEVCTRL & USBHS_DEVCTRL_SPDCONF_Msk)  in usb_dc_enable_clock()
86 		PMC->PMC_MCKR &= ~PMC_MCKR_UPLLDIV2;  in usb_dc_enable_clock()
87 		PMC->PMC_USB = PMC_USB_USBDIV(9) | PMC_USB_USBS;  in usb_dc_enable_clock()
90 		PMC->PMC_SCER |= PMC_SCER_USBCLK;  in usb_dc_enable_clock()
98 	PMC->PMC_SCER &= ~PMC_SCER_USBCLK;  in usb_dc_disable_clock()
101 	PMC->CKGR_UCKR &= ~CKGR_UCKR_UPLLEN;  in usb_dc_disable_clock()
107 	return (USBHS->USBHS_DEVCTRL & USBHS_DEVCTRL_DETACH) == 0;  in usb_dc_is_attached()
110 /* Check if an endpoint is configured */
113 	return USBHS->USBHS_DEVEPTISR[ep_idx] & USBHS_DEVEPTISR_CFGOK;  in usb_dc_ep_is_configured()
116 /* Check if an endpoint is enabled */
119 	return USBHS->USBHS_DEVEPT & BIT(USBHS_DEVEPT_EPEN0_Pos + ep_idx);  in usb_dc_ep_is_enabled()
122 /* Reset and endpoint */
125 	USBHS->USBHS_DEVEPT |= BIT(USBHS_DEVEPT_EPRST0_Pos + ep_idx);  in usb_dc_ep_reset()
126 	USBHS->USBHS_DEVEPT &= ~BIT(USBHS_DEVEPT_EPRST0_Pos + ep_idx);  in usb_dc_ep_reset()
130 /* Enable endpoint interrupts, depending of the type and direction */
134 		/* Control endpoint: enable SETUP and OUT */  in usb_dc_ep_enable_interrupts()
135 		USBHS->USBHS_DEVEPTIER[ep_idx] = USBHS_DEVEPTIER_CTRL_RXSTPES;  in usb_dc_ep_enable_interrupts()
136 		USBHS->USBHS_DEVEPTIER[ep_idx] = USBHS_DEVEPTIER_RXOUTES;  in usb_dc_ep_enable_interrupts()
137 	} else if ((USBHS->USBHS_DEVEPTCFG[ep_idx] & USBHS_DEVEPTCFG_EPDIR_Msk)  in usb_dc_ep_enable_interrupts()
139 		/* IN direction: acknowledge FIFO empty interrupt */  in usb_dc_ep_enable_interrupts()
140 		USBHS->USBHS_DEVEPTICR[ep_idx] = USBHS_DEVEPTICR_TXINIC;  in usb_dc_ep_enable_interrupts()
141 		USBHS->USBHS_DEVEPTIER[ep_idx] = USBHS_DEVEPTIER_TXINES;  in usb_dc_ep_enable_interrupts()
144 		USBHS->USBHS_DEVEPTIER[ep_idx] = USBHS_DEVEPTIER_RXOUTES;  in usb_dc_ep_enable_interrupts()
148 /* Reset the endpoint FIFO pointer to the beginning of the endpoint memory */
157 /* Fetch a byte from the endpoint FIFO */
163 /* Put a byte from the endpoint FIFO */
169 /* Handle interrupts on a control endpoint */
172 	uint32_t sr = USBHS->USBHS_DEVEPTISR[0] & USBHS->USBHS_DEVEPTIMR[0];  in usb_dc_ep0_isr()
173 	uint32_t dev_ctrl = USBHS->USBHS_DEVCTRL;  in usb_dc_ep0_isr()
186 		/* Disable the interrupt */  in usb_dc_ep0_isr()
187 		USBHS->USBHS_DEVEPTIDR[0] = USBHS_DEVEPTIDR_TXINEC;  in usb_dc_ep0_isr()
199 			USBHS->USBHS_DEVCTRL = dev_ctrl | USBHS_DEVCTRL_ADDEN;  in usb_dc_ep0_isr()
204 /* Handle interrupts on a non-control endpoint */
207 	uint32_t sr = USBHS->USBHS_DEVEPTISR[ep_idx] &  in usb_dc_ep_isr()
208 		   USBHS->USBHS_DEVEPTIMR[ep_idx];  in usb_dc_ep_isr()
213 		/* Acknowledge the interrupt */  in usb_dc_ep_isr()
214 		USBHS->USBHS_DEVEPTICR[ep_idx] = USBHS_DEVEPTICR_RXOUTIC;  in usb_dc_ep_isr()
223 		/* Acknowledge the interrupt */  in usb_dc_ep_isr()
224 		USBHS->USBHS_DEVEPTICR[ep_idx] = USBHS_DEVEPTICR_TXINIC;  in usb_dc_ep_isr()
232 /* Top level interrupt handler */
235 	uint32_t sr = USBHS->USBHS_DEVISR & USBHS->USBHS_DEVIMR;  in usb_dc_isr()
237 	/* End of resume interrupt */  in usb_dc_isr()
239 		/* Acknowledge the interrupt */  in usb_dc_isr()
240 		USBHS->USBHS_DEVICR = USBHS_DEVICR_EORSMC;  in usb_dc_isr()
246 	/* End of reset interrupt */  in usb_dc_isr()
248 		/* Acknowledge the interrupt */  in usb_dc_isr()
249 		USBHS->USBHS_DEVICR = USBHS_DEVICR_EORSTC;  in usb_dc_isr()
263 			 * when it receives the EORST.  Re-enable interrupts.  in usb_dc_isr()
268 		/* Free all endpoint memory */  in usb_dc_isr()
271 			USBHS->USBHS_DEVEPTCFG[idx] &= ~USBHS_DEVEPTCFG_ALLOC;  in usb_dc_isr()
278 	/* Suspend interrupt */  in usb_dc_isr()
280 		/* Acknowledge the interrupt */  in usb_dc_isr()
281 		USBHS->USBHS_DEVICR = USBHS_DEVICR_SUSPC;  in usb_dc_isr()
288 	/* SOF interrupt */  in usb_dc_isr()
290 		/* Acknowledge the interrupt */  in usb_dc_isr()
291 		USBHS->USBHS_DEVICR = USBHS_DEVICR_SOFC;  in usb_dc_isr()
298 	/* EP0 endpoint interrupt */  in usb_dc_isr()
303 	/* Other endpoints interrupt */  in usb_dc_isr()
322 	USBHS->USBHS_CTRL = USBHS_CTRL_UIMOD | USBHS_CTRL_USBE |  in usb_dc_attach()
329 	/* high-speed */  in usb_dc_attach()
332 	/* full-speed */  in usb_dc_attach()
335 	USBHS->USBHS_DEVCTRL = regval;  in usb_dc_attach()
341 	USBHS->USBHS_CTRL = USBHS_CTRL_UIMOD | USBHS_CTRL_USBE;  in usb_dc_attach()
344 	USBHS->USBHS_DEVIER = USBHS_DEVIER_EORSMES;  in usb_dc_attach()
345 	USBHS->USBHS_DEVIER = USBHS_DEVIER_EORSTES;  in usb_dc_attach()
346 	USBHS->USBHS_DEVIER = USBHS_DEVIER_SUSPES;  in usb_dc_attach()
348 	USBHS->USBHS_DEVIER = USBHS_DEVIER_SOFES;  in usb_dc_attach()
351 	/* Connect and enable the interrupt */  in usb_dc_attach()
357 	USBHS->USBHS_DEVCTRL &= ~USBHS_DEVCTRL_DETACH;  in usb_dc_attach()
369 	USBHS->USBHS_DEVCTRL |= USBHS_DEVCTRL_DETACH;  in usb_dc_detach()
375 	USBHS->USBHS_CTRL = USBHS_CTRL_UIMOD | USBHS_CTRL_FRZCLK;  in usb_dc_detach()
381 	/* Disable interrupt */  in usb_dc_detach()
392 	USBHS->USBHS_CTRL = USBHS_CTRL_UIMOD | USBHS_CTRL_FRZCLK;  in usb_dc_reset()
408 	USBHS->USBHS_DEVCTRL &= ~(USBHS_DEVCTRL_UADD_Msk | USBHS_DEVCTRL_ADDEN);  in usb_dc_set_address()
409 	USBHS->USBHS_DEVCTRL |= USBHS_DEVCTRL_UADD(addr);  in usb_dc_set_address()
423 /* Check endpoint capabilities */
426 	uint8_t ep_idx = USB_EP_GET_IDX(cfg->ep_addr);  in usb_dc_ep_check_cap()
429 		LOG_ERR("endpoint index/address out of range");  in usb_dc_ep_check_cap()
430 		return -1;  in usb_dc_ep_check_cap()
434 		if (cfg->ep_type != USB_DC_EP_CONTROL) {  in usb_dc_ep_check_cap()
435 			LOG_ERR("pre-selected as control endpoint");  in usb_dc_ep_check_cap()
436 			return -1;  in usb_dc_ep_check_cap()
439 		if (USB_EP_GET_DIR(cfg->ep_addr) != USB_EP_DIR_IN) {  in usb_dc_ep_check_cap()
440 			LOG_INF("pre-selected as IN endpoint");  in usb_dc_ep_check_cap()
441 			return -1;  in usb_dc_ep_check_cap()
444 		if (USB_EP_GET_DIR(cfg->ep_addr) != USB_EP_DIR_OUT) {  in usb_dc_ep_check_cap()
445 			LOG_INF("pre-selected as OUT endpoint");  in usb_dc_ep_check_cap()
446 			return -1;  in usb_dc_ep_check_cap()
450 	if (cfg->ep_mps < 1 || cfg->ep_mps > 1024 ||  in usb_dc_ep_check_cap()
451 	    (cfg->ep_type == USB_DC_EP_CONTROL && cfg->ep_mps > 64)) {  in usb_dc_ep_check_cap()
452 		LOG_ERR("invalid endpoint size");  in usb_dc_ep_check_cap()
453 		return -1;  in usb_dc_ep_check_cap()
459 /* Configure endpoint */
462 	uint8_t ep_idx = USB_EP_GET_IDX(cfg->ep_addr);  in usb_dc_ep_configure()
469 		return -EINVAL;  in usb_dc_ep_configure()
474 		return -ENODEV;  in usb_dc_ep_configure()
478 		LOG_WRN("endpoint already configured & enabled 0x%x", ep_idx);  in usb_dc_ep_configure()
479 		return -EBUSY;  in usb_dc_ep_configure()
482 	LOG_INF("Configure ep %x, mps %d, type %d", cfg->ep_addr, cfg->ep_mps,  in usb_dc_ep_configure()
483 		cfg->ep_type);  in usb_dc_ep_configure()
485 	/* Reset the endpoint */  in usb_dc_ep_configure()
487 	/* Initialize the endpoint FIFO */  in usb_dc_ep_configure()
490 	/* Map the endpoint type */  in usb_dc_ep_configure()
491 	switch (cfg->ep_type) {  in usb_dc_ep_configure()
505 		return -EINVAL;  in usb_dc_ep_configure()
508 	/* Map the endpoint direction */  in usb_dc_ep_configure()
509 	if (USB_EP_DIR_IS_OUT(cfg->ep_addr) ||  in usb_dc_ep_configure()
510 	    cfg->ep_type == USB_DC_EP_CONTROL) {  in usb_dc_ep_configure()
517 	 * Map the endpoint size to the buffer size. Only power of 2 buffer  in usb_dc_ep_configure()
520 	log2ceil_mps = 32 - __builtin_clz((MAX(cfg->ep_mps, 8) << 1) - 1) - 1;  in usb_dc_ep_configure()
521 	regval |= USBHS_DEVEPTCFG_EPSIZE(log2ceil_mps - 3);  in usb_dc_ep_configure()
522 	dev_data.ep_data[ep_idx].mps = cfg->ep_mps;  in usb_dc_ep_configure()
525 	if (cfg->ep_type == USB_DC_EP_ISOCHRONOUS) {  in usb_dc_ep_configure()
531 	/* Configure the endpoint */  in usb_dc_ep_configure()
532 	USBHS->USBHS_DEVEPTCFG[ep_idx] = regval;  in usb_dc_ep_configure()
541 	for (int i = NUM_OF_EP_MAX - 1; i > ep_idx; i--) {  in usb_dc_ep_configure()
550 			USBHS->USBHS_DEVEPTCFG[i] &= ~USBHS_DEVEPTCFG_ALLOC;  in usb_dc_ep_configure()
557 			USBHS->USBHS_DEVEPTCFG[i] |= USBHS_DEVEPTCFG_ALLOC;  in usb_dc_ep_configure()
564 	/* Check that the endpoint is correctly configured */  in usb_dc_ep_configure()
566 		LOG_ERR("endpoint configuration failed");  in usb_dc_ep_configure()
567 		return -EINVAL;  in usb_dc_ep_configure()
573 /* Set stall condition for the selected endpoint */
579 		LOG_ERR("wrong endpoint index/address");  in usb_dc_ep_set_stall()
580 		return -EINVAL;  in usb_dc_ep_set_stall()
583 	USBHS->USBHS_DEVEPTIER[ep_idx] = USBHS_DEVEPTIER_CTRL_STALLRQS;  in usb_dc_ep_set_stall()
589 /* Clear stall condition for the selected endpoint */
595 		LOG_ERR("wrong endpoint index/address");  in usb_dc_ep_clear_stall()
596 		return -EINVAL;  in usb_dc_ep_clear_stall()
599 	USBHS->USBHS_DEVEPTIDR[ep_idx] = USBHS_DEVEPTIDR_CTRL_STALLRQC;  in usb_dc_ep_clear_stall()
605 /* Check if the selected endpoint is stalled */
611 		LOG_ERR("wrong endpoint index/address");  in usb_dc_ep_is_stalled()
612 		return -EINVAL;  in usb_dc_ep_is_stalled()
616 		return -EINVAL;  in usb_dc_ep_is_stalled()
619 	*stalled = (USBHS->USBHS_DEVEPTIMR[ep_idx] &  in usb_dc_ep_is_stalled()
626 /* Halt the selected endpoint */
632 /* Enable the selected endpoint */
638 		LOG_ERR("wrong endpoint index/address");  in usb_dc_ep_enable()
639 		return -EINVAL;  in usb_dc_ep_enable()
643 		LOG_ERR("endpoint not configured");  in usb_dc_ep_enable()
644 		return -ENODEV;  in usb_dc_ep_enable()
647 	/* Enable endpoint */  in usb_dc_ep_enable()
648 	USBHS->USBHS_DEVEPT |= BIT(USBHS_DEVEPT_EPEN0_Pos + ep_idx);  in usb_dc_ep_enable()
650 	/* Enable endpoint interrupts */  in usb_dc_ep_enable()
651 	USBHS->USBHS_DEVIER = BIT(USBHS_DEVIER_PEP_0_Pos + ep_idx);  in usb_dc_ep_enable()
653 	/* Enable SETUP, IN or OUT endpoint interrupts */  in usb_dc_ep_enable()
661 /* Disable the selected endpoint */
667 		LOG_ERR("wrong endpoint index/address");  in usb_dc_ep_disable()
668 		return -EINVAL;  in usb_dc_ep_disable()
671 	/* Disable endpoint interrupt */  in usb_dc_ep_disable()
672 	USBHS->USBHS_DEVIDR = BIT(USBHS_DEVIDR_PEP_0_Pos + ep_idx);  in usb_dc_ep_disable()
674 	/* Disable endpoint and SETUP, IN or OUT interrupts */  in usb_dc_ep_disable()
675 	USBHS->USBHS_DEVEPT &= ~BIT(USBHS_DEVEPT_EPEN0_Pos + ep_idx);  in usb_dc_ep_disable()
682 /* Flush the selected endpoint */
688 		LOG_ERR("wrong endpoint index/address");  in usb_dc_ep_flush()
689 		return -EINVAL;  in usb_dc_ep_flush()
693 		LOG_ERR("endpoint not enabled");  in usb_dc_ep_flush()
694 		return -ENODEV;  in usb_dc_ep_flush()
697 	/* Disable the IN interrupt */  in usb_dc_ep_flush()
698 	USBHS->USBHS_DEVEPTIDR[ep_idx] = USBHS_DEVEPTIDR_TXINEC;  in usb_dc_ep_flush()
701 	if (USBHS->USBHS_DEVEPTISR[ep_idx] & USBHS_DEVEPTISR_NBUSYBK_Msk) {  in usb_dc_ep_flush()
702 		USBHS->USBHS_DEVEPTIER[ep_idx] = USBHS_DEVEPTIER_KILLBKS;  in usb_dc_ep_flush()
704 		while (USBHS->USBHS_DEVEPTIMR[ep_idx] &  in usb_dc_ep_flush()
710 	/* Reset the endpoint */  in usb_dc_ep_flush()
713 	/* Re-enable interrupts */  in usb_dc_ep_flush()
720 /* Write data to the specified endpoint */
727 		LOG_ERR("wrong endpoint index/address");  in usb_dc_ep_write()
728 		return -EINVAL;  in usb_dc_ep_write()
732 		LOG_ERR("endpoint not enabled");  in usb_dc_ep_write()
733 		return -ENODEV;  in usb_dc_ep_write()
737 		LOG_ERR("wrong endpoint direction");  in usb_dc_ep_write()
738 		return -EINVAL;  in usb_dc_ep_write()
741 	if ((USBHS->USBHS_DEVEPTIMR[ep_idx] & USBHS_DEVEPTIMR_CTRL_STALLRQ)  in usb_dc_ep_write()
743 		LOG_WRN("endpoint is stalled");  in usb_dc_ep_write()
744 		return -EBUSY;  in usb_dc_ep_write()
756 		 * Control endpoint: clear the interrupt flag to send the data,  in usb_dc_ep_write()
757 		 * and re-enable the interrupts to trigger an interrupt at the  in usb_dc_ep_write()
760 		USBHS->USBHS_DEVEPTICR[ep_idx] = USBHS_DEVEPTICR_TXINIC;  in usb_dc_ep_write()
761 		USBHS->USBHS_DEVEPTIER[ep_idx] = USBHS_DEVEPTIER_TXINES;  in usb_dc_ep_write()
764 		 * Other endpoint types: clear the FIFO control flag to send  in usb_dc_ep_write()
767 		USBHS->USBHS_DEVEPTIDR[ep_idx] = USBHS_DEVEPTIDR_FIFOCONC;  in usb_dc_ep_write()
778 /* Read data from the specified endpoint */
798 	if (!(USBHS->USBHS_DEVEPTISR[ep_idx] & USBHS_DEVEPTISR_RWALL)) {  in usb_dc_ep_read()
806 /* Set callback function for the specified endpoint */
812 		LOG_ERR("wrong endpoint index/address");  in usb_dc_ep_set_callback()
813 		return -EINVAL;  in usb_dc_ep_set_callback()
826 /* Read data from the specified endpoint */
831 	uint32_t data_len = (USBHS->USBHS_DEVEPTISR[ep_idx] &  in usb_dc_ep_read_wait()
835 		LOG_ERR("wrong endpoint index/address");  in usb_dc_ep_read_wait()
836 		return -EINVAL;  in usb_dc_ep_read_wait()
840 		LOG_ERR("endpoint not enabled");  in usb_dc_ep_read_wait()
841 		return -ENODEV;  in usb_dc_ep_read_wait()
845 		LOG_ERR("wrong endpoint direction");  in usb_dc_ep_read_wait()
846 		return -EINVAL;  in usb_dc_ep_read_wait()
849 	if ((USBHS->USBHS_DEVEPTIMR[ep_idx] & USBHS_DEVEPTIMR_CTRL_STALLRQ)  in usb_dc_ep_read_wait()
851 		LOG_WRN("endpoint is stalled");  in usb_dc_ep_read_wait()
852 		return -EBUSY;  in usb_dc_ep_read_wait()
885 /* Continue reading data from the endpoint */
891 		LOG_ERR("wrong endpoint index/address");  in usb_dc_ep_read_continue()
892 		return -EINVAL;  in usb_dc_ep_read_continue()
896 		LOG_ERR("endpoint not enabled");  in usb_dc_ep_read_continue()
897 		return -ENODEV;  in usb_dc_ep_read_continue()
901 		LOG_ERR("wrong endpoint direction");  in usb_dc_ep_read_continue()
902 		return -EINVAL;  in usb_dc_ep_read_continue()
907 		 * Control endpoint: clear the interrupt flag to send the data.  in usb_dc_ep_read_continue()
911 		USBHS->USBHS_DEVEPTICR[ep_idx] = USBHS_DEVEPTICR_RXOUTIC;  in usb_dc_ep_read_continue()
912 		USBHS->USBHS_DEVEPTICR[ep_idx] = USBHS_DEVEPTICR_CTRL_RXSTPIC;  in usb_dc_ep_read_continue()
915 		 * Other endpoint types: clear the FIFO control flag to  in usb_dc_ep_read_continue()
918 		USBHS->USBHS_DEVEPTIDR[ep_idx] = USBHS_DEVEPTIDR_FIFOCONC;  in usb_dc_ep_read_continue()
925 /* Endpoint max packet size (mps) */
931 		LOG_ERR("wrong endpoint index/address");  in usb_dc_ep_mps()
932 		return -EINVAL;  in usb_dc_ep_mps()