Lines Matching refs:port
71 struct uart_port port;
78 static inline struct mps2_uart_port *to_mps2_port(struct uart_port *port)
80 return container_of(port, struct mps2_uart_port, port);
83 static void mps2_uart_write8(struct uart_port *port, u8 val, unsigned int off)
85 struct mps2_uart_port *mps_port = to_mps2_port(port);
87 writeb(val, mps_port->port.membase + off);
90 static u8 mps2_uart_read8(struct uart_port *port, unsigned int off)
92 struct mps2_uart_port *mps_port = to_mps2_port(port);
94 return readb(mps_port->port.membase + off);
97 static void mps2_uart_write32(struct uart_port *port, u32 val, unsigned int off)
99 struct mps2_uart_port *mps_port = to_mps2_port(port);
101 writel_relaxed(val, mps_port->port.membase + off);
104 static unsigned int mps2_uart_tx_empty(struct uart_port *port)
106 u8 status = mps2_uart_read8(port, UARTn_STATE);
111 static void mps2_uart_set_mctrl(struct uart_port *port, unsigned int mctrl)
115 static unsigned int mps2_uart_get_mctrl(struct uart_port *port)
120 static void mps2_uart_stop_tx(struct uart_port *port)
122 u8 control = mps2_uart_read8(port, UARTn_CTRL);
126 mps2_uart_write8(port, control, UARTn_CTRL);
129 static void mps2_uart_tx_chars(struct uart_port *port)
133 uart_port_tx(port, ch,
134 mps2_uart_tx_empty(port),
135 mps2_uart_write8(port, ch, UARTn_DATA));
138 static void mps2_uart_start_tx(struct uart_port *port)
140 u8 control = mps2_uart_read8(port, UARTn_CTRL);
144 mps2_uart_write8(port, control, UARTn_CTRL);
153 mps2_uart_tx_chars(port);
156 static void mps2_uart_stop_rx(struct uart_port *port)
158 u8 control = mps2_uart_read8(port, UARTn_CTRL);
162 mps2_uart_write8(port, control, UARTn_CTRL);
165 static void mps2_uart_break_ctl(struct uart_port *port, int ctl)
169 static void mps2_uart_rx_chars(struct uart_port *port)
171 struct tty_port *tport = &port->state->port;
173 while (mps2_uart_read8(port, UARTn_STATE) & UARTn_STATE_RX_FULL) {
174 u8 rxdata = mps2_uart_read8(port, UARTn_DATA);
176 port->icount.rx++;
177 tty_insert_flip_char(&port->state->port, rxdata, TTY_NORMAL);
185 struct uart_port *port = data;
186 u8 irqflag = mps2_uart_read8(port, UARTn_INT);
191 spin_lock(&port->lock);
193 mps2_uart_write8(port, UARTn_INT_RX, UARTn_INT);
194 mps2_uart_rx_chars(port);
196 spin_unlock(&port->lock);
203 struct uart_port *port = data;
204 u8 irqflag = mps2_uart_read8(port, UARTn_INT);
209 spin_lock(&port->lock);
211 mps2_uart_write8(port, UARTn_INT_TX, UARTn_INT);
212 mps2_uart_tx_chars(port);
214 spin_unlock(&port->lock);
222 struct uart_port *port = data;
223 u8 irqflag = mps2_uart_read8(port, UARTn_INT);
225 spin_lock(&port->lock);
228 struct tty_port *tport = &port->state->port;
230 mps2_uart_write8(port, UARTn_INT_RX_OVERRUN, UARTn_INT);
231 port->icount.overrun++;
243 mps2_uart_write8(port, UARTn_INT_TX_OVERRUN, UARTn_INT);
247 spin_unlock(&port->lock);
266 static int mps2_uart_startup(struct uart_port *port)
268 struct mps2_uart_port *mps_port = to_mps2_port(port);
269 u8 control = mps2_uart_read8(port, UARTn_CTRL);
274 mps2_uart_write8(port, control, UARTn_CTRL);
277 ret = request_irq(port->irq, mps2_uart_combinedirq, 0,
281 dev_err(port->dev, "failed to register combinedirq (%d)\n", ret);
285 ret = request_irq(port->irq, mps2_uart_oerrirq, IRQF_SHARED,
289 dev_err(port->dev, "failed to register oerrirq (%d)\n", ret);
296 dev_err(port->dev, "failed to register rxirq (%d)\n", ret);
303 dev_err(port->dev, "failed to register txirq (%d)\n", ret);
311 mps2_uart_write8(port, control, UARTn_CTRL);
318 free_irq(port->irq, mps_port);
323 static void mps2_uart_shutdown(struct uart_port *port)
325 struct mps2_uart_port *mps_port = to_mps2_port(port);
326 u8 control = mps2_uart_read8(port, UARTn_CTRL);
330 mps2_uart_write8(port, control, UARTn_CTRL);
337 free_irq(port->irq, mps_port);
341 mps2_uart_set_termios(struct uart_port *port, struct ktermios *termios,
353 baud = uart_get_baud_rate(port, termios, old,
354 DIV_ROUND_CLOSEST(port->uartclk, UARTn_BAUDDIV_MASK),
355 DIV_ROUND_CLOSEST(port->uartclk, 16));
357 bauddiv = DIV_ROUND_CLOSEST(port->uartclk, baud);
359 spin_lock_irqsave(&port->lock, flags);
361 uart_update_timeout(port, termios->c_cflag, baud);
362 mps2_uart_write32(port, bauddiv, UARTn_BAUDDIV);
364 spin_unlock_irqrestore(&port->lock, flags);
370 static const char *mps2_uart_type(struct uart_port *port)
372 return (port->type == PORT_MPS2UART) ? DRIVER_NAME : NULL;
375 static void mps2_uart_release_port(struct uart_port *port)
379 static int mps2_uart_request_port(struct uart_port *port)
384 static void mps2_uart_config_port(struct uart_port *port, int type)
386 if (type & UART_CONFIG_TYPE && !mps2_uart_request_port(port))
387 port->type = PORT_MPS2UART;
390 static int mps2_uart_verify_port(struct uart_port *port, struct serial_struct *serinfo)
416 static void mps2_uart_console_putchar(struct uart_port *port, unsigned char ch)
418 while (mps2_uart_read8(port, UARTn_STATE) & UARTn_STATE_TX_FULL)
421 mps2_uart_write8(port, ch, UARTn_DATA);
427 struct uart_port *port = &mps_port->port;
429 uart_console_write(port, s, cnt, mps2_uart_console_putchar);
451 return uart_set_options(&mps_port->port, co, baud, parity, bits, flow);
468 static void mps2_early_putchar(struct uart_port *port, unsigned char ch)
470 while (readb(port->membase + UARTn_STATE) & UARTn_STATE_TX_FULL)
473 writeb((unsigned char)ch, port->membase + UARTn_DATA);
480 uart_console_write(&dev->port, s, n, mps2_early_putchar);
486 if (!device->port.membase)
530 mps_port->port.line = id;
541 mps_port->port.membase = devm_platform_get_and_ioremap_resource(pdev, 0, &res);
542 if (IS_ERR(mps_port->port.membase))
543 return PTR_ERR(mps_port->port.membase);
545 mps_port->port.mapbase = res->start;
546 mps_port->port.mapsize = resource_size(res);
547 mps_port->port.iotype = UPIO_MEM;
548 mps_port->port.flags = UPF_BOOT_AUTOCONF;
549 mps_port->port.fifosize = 1;
550 mps_port->port.ops = &mps2_uart_pops;
551 mps_port->port.dev = &pdev->dev;
561 mps_port->port.uartclk = clk_get_rate(mps_port->clk);
567 mps_port->port.irq = platform_get_irq(pdev, 0);
571 mps_port->port.irq = platform_get_irq(pdev, 2);
595 ret = uart_add_one_port(&mps2_uart_driver, &mps_port->port);