264 				u16			csr;  in service_zero_data_request()  local
287 					csr  = musb_readw(regs, MUSB_TXCSR);  in service_zero_data_request()
288 					csr |= MUSB_TXCSR_CLRDATATOG |  in service_zero_data_request()
290 					csr &= ~(MUSB_TXCSR_P_SENDSTALL |  in service_zero_data_request()
293 					musb_writew(regs, MUSB_TXCSR, csr);  in service_zero_data_request()
295 					csr  = musb_readw(regs, MUSB_RXCSR);  in service_zero_data_request()
296 					csr |= MUSB_RXCSR_CLRDATATOG |  in service_zero_data_request()
298 					csr &= ~(MUSB_RXCSR_P_SENDSTALL |  in service_zero_data_request()
300 					musb_writew(regs, MUSB_RXCSR, csr);  in service_zero_data_request()
428 				u16			csr;  in service_zero_data_request()  local
446 					csr = musb_readw(regs, MUSB_TXCSR);  in service_zero_data_request()
447 					if (csr & MUSB_TXCSR_FIFONOTEMPTY)  in service_zero_data_request()
448 						csr |= MUSB_TXCSR_FLUSHFIFO;  in service_zero_data_request()
449 					csr |= MUSB_TXCSR_P_SENDSTALL  in service_zero_data_request()
452 					musb_writew(regs, MUSB_TXCSR, csr);  in service_zero_data_request()
454 					csr = musb_readw(regs, MUSB_RXCSR);  in service_zero_data_request()
455 					csr |= MUSB_RXCSR_P_SENDSTALL  in service_zero_data_request()
459 					musb_writew(regs, MUSB_RXCSR, csr);  in service_zero_data_request()
490 	u16			count, csr;  in ep0_rxstate()  local
512 		csr = MUSB_CSR0_P_SVDRXPKTRDY;  in ep0_rxstate()
515 			csr |= MUSB_CSR0_P_DATAEND;  in ep0_rxstate()
519 		csr = MUSB_CSR0_P_SVDRXPKTRDY | MUSB_CSR0_P_SENDSTALL;  in ep0_rxstate()
526 		musb->ackpend = csr;  in ep0_rxstate()
533 	musb_writew(regs, MUSB_CSR0, csr);  in ep0_rxstate()
547 	u16			csr = MUSB_CSR0_TXPKTRDY;  in ep0_txstate()  local
571 		csr |= MUSB_CSR0_P_DATAEND;  in ep0_txstate()
581 		musb->ackpend = csr;  in ep0_txstate()
590 	musb_writew(regs, MUSB_CSR0, csr);  in ep0_txstate()
668 	u16		csr;  in musb_g_ep0_irq()  local
675 	csr = musb_readw(regs, MUSB_CSR0);  in musb_g_ep0_irq()
679 			csr, len, decode_ep0stage(musb->ep0_state));  in musb_g_ep0_irq()
681 	if (csr & MUSB_CSR0_P_DATAEND) {  in musb_g_ep0_irq()
690 	if (csr & MUSB_CSR0_P_SENTSTALL) {  in musb_g_ep0_irq()
692 				csr & ~MUSB_CSR0_P_SENTSTALL);  in musb_g_ep0_irq()
695 		csr = musb_readw(regs, MUSB_CSR0);  in musb_g_ep0_irq()
699 	if (csr & MUSB_CSR0_P_SETUPEND) {  in musb_g_ep0_irq()
714 		csr = musb_readw(regs, MUSB_CSR0);  in musb_g_ep0_irq()
726 		if ((csr & MUSB_CSR0_TXPKTRDY) == 0) {  in musb_g_ep0_irq()
734 		if (csr & MUSB_CSR0_RXPKTRDY) {  in musb_g_ep0_irq()
779 		if (csr & MUSB_CSR0_RXPKTRDY)  in musb_g_ep0_irq()
799 		if (csr & MUSB_CSR0_RXPKTRDY) {  in musb_g_ep0_irq()
868 				handled, csr,  in musb_g_ep0_irq()
1022 	u16			csr;  in musb_g_ep0_halt()  local
1041 	csr = musb->ackpend;  in musb_g_ep0_halt()
1051 		csr = musb_readw(regs, MUSB_CSR0);  in musb_g_ep0_halt()
1060 		csr |= MUSB_CSR0_P_SENDSTALL;  in musb_g_ep0_halt()
1061 		musb_writew(regs, MUSB_CSR0, csr);  in musb_g_ep0_halt()