67 static int mtk_uart_probe(struct uart_bas *bas);
68 static void mtk_uart_init(struct uart_bas *bas, int, int, int, int);
69 static void mtk_uart_term(struct uart_bas *bas);
70 static void mtk_uart_putc(struct uart_bas *bas, int);
71 static int mtk_uart_rxready(struct uart_bas *bas);
72 static int mtk_uart_getc(struct uart_bas *bas, struct mtx *);
89 mtk_uart_probe(struct uart_bas *bas)  in mtk_uart_probe()  argument
95 mtk_uart_init(struct uart_bas *bas, int baudrate, int databits,  in mtk_uart_init()  argument
125 	if (bas->rclk && baudrate) {  in mtk_uart_init()
126         	uart_setreg(bas, UART_CDDL_REG, bas->rclk/16/baudrate);  in mtk_uart_init()
127 		uart_barrier(bas);  in mtk_uart_init()
130         uart_setreg(bas, UART_LCR_REG, databits |  in mtk_uart_init()
133 	uart_barrier(bas);  in mtk_uart_init()
137 mtk_uart_term(struct uart_bas *bas)  in mtk_uart_term()  argument
139         uart_setreg(bas, UART_MCR_REG, 0);  in mtk_uart_term()
140 	uart_barrier(bas);  in mtk_uart_term()
144 mtk_uart_putc(struct uart_bas *bas, int c)  in mtk_uart_putc()  argument
149 	while (!(uart_getreg(bas, UART_LSR_REG) & UART_LSR_THRE));  in mtk_uart_putc()
150 	uart_setreg(bas, UART_TX_REG, c);  in mtk_uart_putc()
151 	uart_barrier(bas);  in mtk_uart_putc()
152 	while (!(uart_getreg(bas, UART_LSR_REG) & UART_LSR_THRE));  in mtk_uart_putc()
156 mtk_uart_rxready(struct uart_bas *bas)  in mtk_uart_rxready()  argument
158 	if (uart_getreg(bas, UART_LSR_REG) & UART_LSR_DR)  in mtk_uart_rxready()
164 mtk_uart_getc(struct uart_bas *bas, struct mtx *hwmtx)  in mtk_uart_getc()  argument
170 	while (!(uart_getreg(bas, UART_LSR_REG) & UART_LSR_DR)) {  in mtk_uart_getc()
176 	c = uart_getreg(bas, UART_RX_REG);  in mtk_uart_getc()
256 	struct uart_bas *bas = &sc->sc_bas;  in mtk_uart_disable_txintr()  local
259 	cr = uart_getreg(bas, UART_IER_REG);  in mtk_uart_disable_txintr()
261 	uart_setreg(bas, UART_IER_REG, cr);  in mtk_uart_disable_txintr()
262 	uart_barrier(bas);  in mtk_uart_disable_txintr()
271 	struct uart_bas *bas = &sc->sc_bas;  in mtk_uart_enable_txintr()  local
274 	cr = uart_getreg(bas, UART_IER_REG);  in mtk_uart_enable_txintr()
276 	uart_setreg(bas, UART_IER_REG, cr);  in mtk_uart_enable_txintr()
277 	uart_barrier(bas);  in mtk_uart_enable_txintr()
283 	struct uart_bas *bas;  in mtk_uart_bus_attach()  local
287 	bas = &sc->sc_bas;  in mtk_uart_bus_attach()
289 	if (!bas->rclk) {  in mtk_uart_bus_attach()
290 		bas->rclk = mtk_soc_get_uartclk();  in mtk_uart_bus_attach()
295 		mtk_uart_init(bas, di->baudrate, di->databits, di->stopbits,  in mtk_uart_bus_attach()
298 		mtk_uart_init(bas, 57600, 8, 1, 0);  in mtk_uart_bus_attach()
307 	uart_setreg(bas, UART_FCR_REG,  in mtk_uart_bus_attach()
308 	    uart_getreg(bas, UART_FCR_REG) |  in mtk_uart_bus_attach()
310 	uart_barrier(bas);  in mtk_uart_bus_attach()
313 	uart_setreg(bas, UART_IER_REG,  in mtk_uart_bus_attach()
315 	uart_barrier(bas);  in mtk_uart_bus_attach()
329 	struct uart_bas *bas = &sc->sc_bas;  in mtk_uart_bus_flush()  local
330 	uint32_t fcr = uart_getreg(bas, UART_FCR_REG);  in mtk_uart_bus_flush()
333 		uart_setreg(bas, UART_FCR_REG, fcr|UART_FCR_TXRST);  in mtk_uart_bus_flush()
334 		uart_barrier(bas);  in mtk_uart_bus_flush()
337 		uart_setreg(bas, UART_FCR_REG, fcr|UART_FCR_RXRST);  in mtk_uart_bus_flush()
338 		uart_barrier(bas);  in mtk_uart_bus_flush()
340 	uart_setreg(bas, UART_FCR_REG, fcr);  in mtk_uart_bus_flush()
341 	uart_barrier(bas);  in mtk_uart_bus_flush()
371 	struct uart_bas *bas;  in mtk_uart_bus_ioctl()  local
374 	bas = &sc->sc_bas;  in mtk_uart_bus_ioctl()
382 		divisor = uart_getreg(bas, UART_CDDL_REG);  in mtk_uart_bus_ioctl()
383 		baudrate = bas->rclk / (divisor * 16);  in mtk_uart_bus_ioctl()
397 	struct uart_bas *bas;  in mtk_uart_bus_ipend()  local
403 	bas = &sc->sc_bas;  in mtk_uart_bus_ipend()
471 	struct uart_bas *bas;  in mtk_uart_bus_receive()  local
475 	bas = &sc->sc_bas;  in mtk_uart_bus_receive()
477 	lsr = uart_getreg(bas, UART_LSR_REG);  in mtk_uart_bus_receive()
484 		xc = uart_getreg(bas, UART_RX_REG);  in mtk_uart_bus_receive()
491 		uart_barrier(bas);  in mtk_uart_bus_receive()
493 		lsr = uart_getreg(bas, UART_LSR_REG);  in mtk_uart_bus_receive()
510 	struct uart_bas *bas = &sc->sc_bas;  in mtk_uart_bus_transmit()  local
515 	bas = &sc->sc_bas;  in mtk_uart_bus_transmit()
517 	while ((uart_getreg(bas, UART_LSR_REG) & UART_LSR_THRE) == 0);  in mtk_uart_bus_transmit()
520 		uart_setreg(bas, UART_TX_REG, sc->sc_txbuf[i]);  in mtk_uart_bus_transmit()
521 		uart_barrier(bas);  in mtk_uart_bus_transmit()
531 	struct uart_bas *bas = &sc->sc_bas;  in mtk_uart_bus_grab()  local
535 	usc->ier = uart_getreg(bas, UART_IER_REG);  in mtk_uart_bus_grab()
536 	uart_setreg(bas, UART_IER_REG, usc->ier & usc->ier_mask);  in mtk_uart_bus_grab()
537 	uart_barrier(bas);  in mtk_uart_bus_grab()
545 	struct uart_bas *bas = &sc->sc_bas;  in mtk_uart_bus_ungrab()  local
548 	uart_setreg(bas, UART_IER_REG, usc->ier);  in mtk_uart_bus_ungrab()
549 	uart_barrier(bas);  in mtk_uart_bus_ungrab()