Lines Matching refs:up
57 static inline unsigned int ar933x_uart_read(struct ar933x_uart_port *up,
60 return readl(up->port.membase + offset);
63 static inline void ar933x_uart_write(struct ar933x_uart_port *up,
66 writel(value, up->port.membase + offset);
69 static inline void ar933x_uart_rmw(struct ar933x_uart_port *up,
76 t = ar933x_uart_read(up, offset);
79 ar933x_uart_write(up, offset, t);
82 static inline void ar933x_uart_rmw_set(struct ar933x_uart_port *up,
86 ar933x_uart_rmw(up, offset, 0, val);
89 static inline void ar933x_uart_rmw_clear(struct ar933x_uart_port *up,
93 ar933x_uart_rmw(up, offset, val, 0);
96 static inline void ar933x_uart_start_tx_interrupt(struct ar933x_uart_port *up)
98 up->ier |= AR933X_UART_INT_TX_EMPTY;
99 ar933x_uart_write(up, AR933X_UART_INT_EN_REG, up->ier);
102 static inline void ar933x_uart_stop_tx_interrupt(struct ar933x_uart_port *up)
104 up->ier &= ~AR933X_UART_INT_TX_EMPTY;
105 ar933x_uart_write(up, AR933X_UART_INT_EN_REG, up->ier);
108 static inline void ar933x_uart_start_rx_interrupt(struct ar933x_uart_port *up)
110 up->ier |= AR933X_UART_INT_RX_VALID;
111 ar933x_uart_write(up, AR933X_UART_INT_EN_REG, up->ier);
114 static inline void ar933x_uart_stop_rx_interrupt(struct ar933x_uart_port *up)
116 up->ier &= ~AR933X_UART_INT_RX_VALID;
117 ar933x_uart_write(up, AR933X_UART_INT_EN_REG, up->ier);
120 static inline void ar933x_uart_putc(struct ar933x_uart_port *up, int ch)
126 ar933x_uart_write(up, AR933X_UART_DATA_REG, rdata);
131 struct ar933x_uart_port *up =
136 spin_lock_irqsave(&up->port.lock, flags);
137 rdata = ar933x_uart_read(up, AR933X_UART_DATA_REG);
138 spin_unlock_irqrestore(&up->port.lock, flags);
145 struct ar933x_uart_port *up =
149 mctrl_gpio_get(up->gpios, &ret);
156 struct ar933x_uart_port *up =
159 mctrl_gpio_set(up->gpios, mctrl);
164 struct ar933x_uart_port *up =
167 ar933x_uart_start_tx_interrupt(up);
170 static void ar933x_uart_wait_tx_complete(struct ar933x_uart_port *up)
175 /* Wait up to 60ms for the character(s) to be sent. */
177 status = ar933x_uart_read(up, AR933X_UART_CS_REG);
184 dev_err(up->port.dev, "waiting for TX timed out\n");
187 static void ar933x_uart_rx_flush(struct ar933x_uart_port *up)
192 ar933x_uart_write(up, AR933X_UART_INT_REG, AR933X_UART_INT_RX_VALID);
196 ar933x_uart_write(up, AR933X_UART_DATA_REG, AR933X_UART_DATA_RX_CSR);
197 status = ar933x_uart_read(up, AR933X_UART_DATA_REG);
203 struct ar933x_uart_port *up =
206 ar933x_uart_stop_tx_interrupt(up);
211 struct ar933x_uart_port *up =
214 ar933x_uart_stop_rx_interrupt(up);
219 struct ar933x_uart_port *up =
223 spin_lock_irqsave(&up->port.lock, flags);
225 ar933x_uart_rmw_set(up, AR933X_UART_CS_REG,
228 ar933x_uart_rmw_clear(up, AR933X_UART_CS_REG,
230 spin_unlock_irqrestore(&up->port.lock, flags);
288 struct ar933x_uart_port *up =
314 baud = uart_get_baud_rate(port, new, old, up->min_baud, up->max_baud);
321 spin_lock_irqsave(&up->port.lock, flags);
324 ar933x_uart_rmw_clear(up, AR933X_UART_CS_REG,
330 up->port.ignore_status_mask = 0;
334 up->port.ignore_status_mask |= AR933X_DUMMY_STATUS_RD;
336 ar933x_uart_write(up, AR933X_UART_CLOCK_REG,
340 ar933x_uart_rmw(up, AR933X_UART_CS_REG, AR933X_UART_CS_PARITY_M, cs);
343 ar933x_uart_rmw_set(up, AR933X_UART_CS_REG,
347 ar933x_uart_rmw_set(up, AR933X_UART_CS_REG,
351 ar933x_uart_rmw(up, AR933X_UART_CS_REG,
355 spin_unlock_irqrestore(&up->port.lock, flags);
361 static void ar933x_uart_rx_chars(struct ar933x_uart_port *up)
363 struct tty_port *port = &up->port.state->port;
370 rdata = ar933x_uart_read(up, AR933X_UART_DATA_REG);
375 ar933x_uart_write(up, AR933X_UART_DATA_REG,
378 up->port.icount.rx++;
381 if (uart_handle_sysrq_char(&up->port, ch))
384 if ((up->port.ignore_status_mask & AR933X_DUMMY_STATUS_RD) == 0)
388 spin_unlock(&up->port.lock);
390 spin_lock(&up->port.lock);
393 static void ar933x_uart_tx_chars(struct ar933x_uart_port *up)
395 struct circ_buf *xmit = &up->port.state->xmit;
396 struct serial_rs485 *rs485conf = &up->port.rs485;
400 if (uart_tx_stopped(&up->port))
404 (up->port.x_char || !uart_circ_empty(xmit))) {
405 ar933x_uart_stop_rx_interrupt(up);
406 gpiod_set_value(up->rts_gpiod, !!(rs485conf->flags & SER_RS485_RTS_ON_SEND));
410 count = up->port.fifosize;
414 rdata = ar933x_uart_read(up, AR933X_UART_DATA_REG);
418 if (up->port.x_char) {
419 ar933x_uart_putc(up, up->port.x_char);
420 up->port.icount.tx++;
421 up->port.x_char = 0;
428 ar933x_uart_putc(up, xmit->buf[xmit->tail]);
431 up->port.icount.tx++;
435 uart_write_wakeup(&up->port);
438 ar933x_uart_start_tx_interrupt(up);
440 ar933x_uart_wait_tx_complete(up);
441 ar933x_uart_rx_flush(up);
442 ar933x_uart_start_rx_interrupt(up);
443 gpiod_set_value(up->rts_gpiod, !!(rs485conf->flags & SER_RS485_RTS_AFTER_SEND));
449 struct ar933x_uart_port *up = dev_id;
452 status = ar933x_uart_read(up, AR933X_UART_CS_REG);
456 spin_lock(&up->port.lock);
458 status = ar933x_uart_read(up, AR933X_UART_INT_REG);
459 status &= ar933x_uart_read(up, AR933X_UART_INT_EN_REG);
462 ar933x_uart_write(up, AR933X_UART_INT_REG,
464 ar933x_uart_rx_chars(up);
468 ar933x_uart_write(up, AR933X_UART_INT_REG,
470 ar933x_uart_stop_tx_interrupt(up);
471 ar933x_uart_tx_chars(up);
474 spin_unlock(&up->port.lock);
481 struct ar933x_uart_port *up =
486 ret = request_irq(up->port.irq, ar933x_uart_interrupt,
487 up->port.irqflags, dev_name(up->port.dev), up);
491 spin_lock_irqsave(&up->port.lock, flags);
494 ar933x_uart_rmw_set(up, AR933X_UART_CS_REG,
498 ar933x_uart_rmw_set(up, AR933X_UART_CS_REG,
502 ar933x_uart_start_rx_interrupt(up);
504 spin_unlock_irqrestore(&up->port.lock, flags);
511 struct ar933x_uart_port *up =
515 up->ier = 0;
516 ar933x_uart_write(up, AR933X_UART_INT_EN_REG, up->ier);
519 ar933x_uart_rmw_clear(up, AR933X_UART_CS_REG,
522 free_irq(up->port.irq, up);
550 struct ar933x_uart_port *up =
560 if (ser->baud_base < up->min_baud ||
561 ser->baud_base > up->max_baud)
588 struct ar933x_uart_port *up =
592 !up->rts_gpiod) {
598 gpiod_set_value(up->rts_gpiod,
609 static void ar933x_uart_wait_xmitr(struct ar933x_uart_port *up)
614 /* Wait up to 60ms for the character(s) to be sent. */
616 status = ar933x_uart_read(up, AR933X_UART_DATA_REG);
625 struct ar933x_uart_port *up =
628 ar933x_uart_wait_xmitr(up);
629 ar933x_uart_putc(up, ch);
635 struct ar933x_uart_port *up = ar933x_console_ports[co->index];
642 if (up->port.sysrq)
645 locked = spin_trylock(&up->port.lock);
647 spin_lock(&up->port.lock);
652 int_en = ar933x_uart_read(up, AR933X_UART_INT_EN_REG);
653 ar933x_uart_write(up, AR933X_UART_INT_EN_REG, 0);
655 uart_console_write(&up->port, s, count, ar933x_uart_console_putchar);
661 ar933x_uart_wait_xmitr(up);
662 ar933x_uart_write(up, AR933X_UART_INT_EN_REG, int_en);
664 ar933x_uart_write(up, AR933X_UART_INT_REG, AR933X_UART_INT_ALLINTS);
667 spin_unlock(&up->port.lock);
674 struct ar933x_uart_port *up;
683 up = ar933x_console_ports[co->index];
684 if (!up)
690 return uart_set_options(&up->port, co, baud, parity, bits, flow);
714 struct ar933x_uart_port *up;
746 up = devm_kzalloc(&pdev->dev, sizeof(struct ar933x_uart_port),
748 if (!up)
751 up->clk = devm_clk_get(&pdev->dev, "uart");
752 if (IS_ERR(up->clk)) {
754 return PTR_ERR(up->clk);
757 port = &up->port;
764 ret = clk_prepare_enable(up->clk);
768 port->uartclk = clk_get_rate(up->clk);
787 up->min_baud = max_t(unsigned int, baud, AR933X_UART_MIN_BAUD);
790 up->max_baud = min_t(unsigned int, baud, AR933X_UART_MAX_BAUD);
796 up->gpios = mctrl_gpio_init(port, 0);
797 if (IS_ERR(up->gpios) && PTR_ERR(up->gpios) != -ENOSYS) {
798 ret = PTR_ERR(up->gpios);
802 up->rts_gpiod = mctrl_gpio_to_gpiod(up->gpios, UART_GPIO_RTS);
805 !up->rts_gpiod) {
811 ar933x_console_ports[up->port.line] = up;
814 ret = uart_add_one_port(&ar933x_uart_driver, &up->port);
818 platform_set_drvdata(pdev, up);
822 clk_disable_unprepare(up->clk);
828 struct ar933x_uart_port *up;
830 up = platform_get_drvdata(pdev);
832 if (up) {
833 uart_remove_one_port(&ar933x_uart_driver, &up->port);
834 clk_disable_unprepare(up->clk);