Lines Matching refs:up
60 static inline unsigned int ar933x_uart_read(struct ar933x_uart_port *up, in ar933x_uart_read() argument
63 return readl(up->port.membase + offset); in ar933x_uart_read()
66 static inline void ar933x_uart_write(struct ar933x_uart_port *up, in ar933x_uart_write() argument
69 writel(value, up->port.membase + offset); in ar933x_uart_write()
72 static inline void ar933x_uart_rmw(struct ar933x_uart_port *up, in ar933x_uart_rmw() argument
79 t = ar933x_uart_read(up, offset); in ar933x_uart_rmw()
82 ar933x_uart_write(up, offset, t); in ar933x_uart_rmw()
85 static inline void ar933x_uart_rmw_set(struct ar933x_uart_port *up, in ar933x_uart_rmw_set() argument
89 ar933x_uart_rmw(up, offset, 0, val); in ar933x_uart_rmw_set()
92 static inline void ar933x_uart_rmw_clear(struct ar933x_uart_port *up, in ar933x_uart_rmw_clear() argument
96 ar933x_uart_rmw(up, offset, val, 0); in ar933x_uart_rmw_clear()
99 static inline void ar933x_uart_start_tx_interrupt(struct ar933x_uart_port *up) in ar933x_uart_start_tx_interrupt() argument
101 up->ier |= AR933X_UART_INT_TX_EMPTY; in ar933x_uart_start_tx_interrupt()
102 ar933x_uart_write(up, AR933X_UART_INT_EN_REG, up->ier); in ar933x_uart_start_tx_interrupt()
105 static inline void ar933x_uart_stop_tx_interrupt(struct ar933x_uart_port *up) in ar933x_uart_stop_tx_interrupt() argument
107 up->ier &= ~AR933X_UART_INT_TX_EMPTY; in ar933x_uart_stop_tx_interrupt()
108 ar933x_uart_write(up, AR933X_UART_INT_EN_REG, up->ier); in ar933x_uart_stop_tx_interrupt()
111 static inline void ar933x_uart_putc(struct ar933x_uart_port *up, int ch) in ar933x_uart_putc() argument
117 ar933x_uart_write(up, AR933X_UART_DATA_REG, rdata); in ar933x_uart_putc()
122 struct ar933x_uart_port *up = in ar933x_uart_tx_empty() local
127 spin_lock_irqsave(&up->port.lock, flags); in ar933x_uart_tx_empty()
128 rdata = ar933x_uart_read(up, AR933X_UART_DATA_REG); in ar933x_uart_tx_empty()
129 spin_unlock_irqrestore(&up->port.lock, flags); in ar933x_uart_tx_empty()
145 struct ar933x_uart_port *up = in ar933x_uart_start_tx() local
148 ar933x_uart_start_tx_interrupt(up); in ar933x_uart_start_tx()
153 struct ar933x_uart_port *up = in ar933x_uart_stop_tx() local
156 ar933x_uart_stop_tx_interrupt(up); in ar933x_uart_stop_tx()
161 struct ar933x_uart_port *up = in ar933x_uart_stop_rx() local
164 up->ier &= ~AR933X_UART_INT_RX_VALID; in ar933x_uart_stop_rx()
165 ar933x_uart_write(up, AR933X_UART_INT_EN_REG, up->ier); in ar933x_uart_stop_rx()
170 struct ar933x_uart_port *up = in ar933x_uart_break_ctl() local
174 spin_lock_irqsave(&up->port.lock, flags); in ar933x_uart_break_ctl()
176 ar933x_uart_rmw_set(up, AR933X_UART_CS_REG, in ar933x_uart_break_ctl()
179 ar933x_uart_rmw_clear(up, AR933X_UART_CS_REG, in ar933x_uart_break_ctl()
181 spin_unlock_irqrestore(&up->port.lock, flags); in ar933x_uart_break_ctl()
239 struct ar933x_uart_port *up = in ar933x_uart_set_termios() local
265 baud = uart_get_baud_rate(port, new, old, up->min_baud, up->max_baud); in ar933x_uart_set_termios()
272 spin_lock_irqsave(&up->port.lock, flags); in ar933x_uart_set_termios()
275 ar933x_uart_rmw_clear(up, AR933X_UART_CS_REG, in ar933x_uart_set_termios()
281 up->port.ignore_status_mask = 0; in ar933x_uart_set_termios()
285 up->port.ignore_status_mask |= AR933X_DUMMY_STATUS_RD; in ar933x_uart_set_termios()
287 ar933x_uart_write(up, AR933X_UART_CLOCK_REG, in ar933x_uart_set_termios()
291 ar933x_uart_rmw(up, AR933X_UART_CS_REG, AR933X_UART_CS_PARITY_M, cs); in ar933x_uart_set_termios()
294 ar933x_uart_rmw_set(up, AR933X_UART_CS_REG, in ar933x_uart_set_termios()
298 ar933x_uart_rmw(up, AR933X_UART_CS_REG, in ar933x_uart_set_termios()
302 spin_unlock_irqrestore(&up->port.lock, flags); in ar933x_uart_set_termios()
308 static void ar933x_uart_rx_chars(struct ar933x_uart_port *up) in ar933x_uart_rx_chars() argument
310 struct tty_port *port = &up->port.state->port; in ar933x_uart_rx_chars()
317 rdata = ar933x_uart_read(up, AR933X_UART_DATA_REG); in ar933x_uart_rx_chars()
322 ar933x_uart_write(up, AR933X_UART_DATA_REG, in ar933x_uart_rx_chars()
325 up->port.icount.rx++; in ar933x_uart_rx_chars()
328 if (uart_handle_sysrq_char(&up->port, ch)) in ar933x_uart_rx_chars()
331 if ((up->port.ignore_status_mask & AR933X_DUMMY_STATUS_RD) == 0) in ar933x_uart_rx_chars()
335 spin_unlock(&up->port.lock); in ar933x_uart_rx_chars()
337 spin_lock(&up->port.lock); in ar933x_uart_rx_chars()
340 static void ar933x_uart_tx_chars(struct ar933x_uart_port *up) in ar933x_uart_tx_chars() argument
342 struct circ_buf *xmit = &up->port.state->xmit; in ar933x_uart_tx_chars()
345 if (uart_tx_stopped(&up->port)) in ar933x_uart_tx_chars()
348 count = up->port.fifosize; in ar933x_uart_tx_chars()
352 rdata = ar933x_uart_read(up, AR933X_UART_DATA_REG); in ar933x_uart_tx_chars()
356 if (up->port.x_char) { in ar933x_uart_tx_chars()
357 ar933x_uart_putc(up, up->port.x_char); in ar933x_uart_tx_chars()
358 up->port.icount.tx++; in ar933x_uart_tx_chars()
359 up->port.x_char = 0; in ar933x_uart_tx_chars()
366 ar933x_uart_putc(up, xmit->buf[xmit->tail]); in ar933x_uart_tx_chars()
369 up->port.icount.tx++; in ar933x_uart_tx_chars()
373 uart_write_wakeup(&up->port); in ar933x_uart_tx_chars()
376 ar933x_uart_start_tx_interrupt(up); in ar933x_uart_tx_chars()
381 struct ar933x_uart_port *up = dev_id; in ar933x_uart_interrupt() local
384 status = ar933x_uart_read(up, AR933X_UART_CS_REG); in ar933x_uart_interrupt()
388 spin_lock(&up->port.lock); in ar933x_uart_interrupt()
390 status = ar933x_uart_read(up, AR933X_UART_INT_REG); in ar933x_uart_interrupt()
391 status &= ar933x_uart_read(up, AR933X_UART_INT_EN_REG); in ar933x_uart_interrupt()
394 ar933x_uart_write(up, AR933X_UART_INT_REG, in ar933x_uart_interrupt()
396 ar933x_uart_rx_chars(up); in ar933x_uart_interrupt()
400 ar933x_uart_write(up, AR933X_UART_INT_REG, in ar933x_uart_interrupt()
402 ar933x_uart_stop_tx_interrupt(up); in ar933x_uart_interrupt()
403 ar933x_uart_tx_chars(up); in ar933x_uart_interrupt()
406 spin_unlock(&up->port.lock); in ar933x_uart_interrupt()
413 struct ar933x_uart_port *up = in ar933x_uart_startup() local
418 ret = request_irq(up->port.irq, ar933x_uart_interrupt, in ar933x_uart_startup()
419 up->port.irqflags, dev_name(up->port.dev), up); in ar933x_uart_startup()
423 spin_lock_irqsave(&up->port.lock, flags); in ar933x_uart_startup()
426 ar933x_uart_rmw_set(up, AR933X_UART_CS_REG, in ar933x_uart_startup()
430 up->ier = AR933X_UART_INT_RX_VALID; in ar933x_uart_startup()
431 ar933x_uart_write(up, AR933X_UART_INT_EN_REG, up->ier); in ar933x_uart_startup()
433 spin_unlock_irqrestore(&up->port.lock, flags); in ar933x_uart_startup()
440 struct ar933x_uart_port *up = in ar933x_uart_shutdown() local
444 up->ier = 0; in ar933x_uart_shutdown()
445 ar933x_uart_write(up, AR933X_UART_INT_EN_REG, up->ier); in ar933x_uart_shutdown()
448 ar933x_uart_rmw_clear(up, AR933X_UART_CS_REG, in ar933x_uart_shutdown()
451 free_irq(up->port.irq, up); in ar933x_uart_shutdown()
479 struct ar933x_uart_port *up = in ar933x_uart_verify_port() local
489 if (ser->baud_base < up->min_baud || in ar933x_uart_verify_port()
490 ser->baud_base > up->max_baud) in ar933x_uart_verify_port()
517 static void ar933x_uart_wait_xmitr(struct ar933x_uart_port *up) in ar933x_uart_wait_xmitr() argument
524 status = ar933x_uart_read(up, AR933X_UART_DATA_REG); in ar933x_uart_wait_xmitr()
533 struct ar933x_uart_port *up = in ar933x_uart_console_putchar() local
536 ar933x_uart_wait_xmitr(up); in ar933x_uart_console_putchar()
537 ar933x_uart_putc(up, ch); in ar933x_uart_console_putchar()
543 struct ar933x_uart_port *up = ar933x_console_ports[co->index]; in ar933x_uart_console_write() local
550 if (up->port.sysrq) in ar933x_uart_console_write()
553 locked = spin_trylock(&up->port.lock); in ar933x_uart_console_write()
555 spin_lock(&up->port.lock); in ar933x_uart_console_write()
560 int_en = ar933x_uart_read(up, AR933X_UART_INT_EN_REG); in ar933x_uart_console_write()
561 ar933x_uart_write(up, AR933X_UART_INT_EN_REG, 0); in ar933x_uart_console_write()
563 uart_console_write(&up->port, s, count, ar933x_uart_console_putchar); in ar933x_uart_console_write()
569 ar933x_uart_wait_xmitr(up); in ar933x_uart_console_write()
570 ar933x_uart_write(up, AR933X_UART_INT_EN_REG, int_en); in ar933x_uart_console_write()
572 ar933x_uart_write(up, AR933X_UART_INT_REG, AR933X_UART_INT_ALLINTS); in ar933x_uart_console_write()
575 spin_unlock(&up->port.lock); in ar933x_uart_console_write()
582 struct ar933x_uart_port *up; in ar933x_uart_console_setup() local
591 up = ar933x_console_ports[co->index]; in ar933x_uart_console_setup()
592 if (!up) in ar933x_uart_console_setup()
598 return uart_set_options(&up->port, co, baud, parity, bits, flow); in ar933x_uart_console_setup()
611 static void ar933x_uart_add_console_port(struct ar933x_uart_port *up) in ar933x_uart_add_console_port() argument
616 ar933x_console_ports[up->port.line] = up; in ar933x_uart_add_console_port()
629 struct ar933x_uart_port *up; in ar933x_uart_probe() local
661 up = devm_kzalloc(&pdev->dev, sizeof(struct ar933x_uart_port), in ar933x_uart_probe()
663 if (!up) in ar933x_uart_probe()
666 up->clk = devm_clk_get(&pdev->dev, "uart"); in ar933x_uart_probe()
667 if (IS_ERR(up->clk)) { in ar933x_uart_probe()
669 return PTR_ERR(up->clk); in ar933x_uart_probe()
672 port = &up->port; in ar933x_uart_probe()
679 ret = clk_prepare_enable(up->clk); in ar933x_uart_probe()
683 port->uartclk = clk_get_rate(up->clk); in ar933x_uart_probe()
701 up->min_baud = max_t(unsigned int, baud, AR933X_UART_MIN_BAUD); in ar933x_uart_probe()
704 up->max_baud = min_t(unsigned int, baud, AR933X_UART_MAX_BAUD); in ar933x_uart_probe()
706 ar933x_uart_add_console_port(up); in ar933x_uart_probe()
708 ret = uart_add_one_port(&ar933x_uart_driver, &up->port); in ar933x_uart_probe()
712 platform_set_drvdata(pdev, up); in ar933x_uart_probe()
716 clk_disable_unprepare(up->clk); in ar933x_uart_probe()
722 struct ar933x_uart_port *up; in ar933x_uart_remove() local
724 up = platform_get_drvdata(pdev); in ar933x_uart_remove()
726 if (up) { in ar933x_uart_remove()
727 uart_remove_one_port(&ar933x_uart_driver, &up->port); in ar933x_uart_remove()
728 clk_disable_unprepare(up->clk); in ar933x_uart_remove()