Lines Matching refs:port
72 struct uart_port port;
79 static inline struct mps2_uart_port *to_mps2_port(struct uart_port *port)
81 return container_of(port, struct mps2_uart_port, port);
84 static void mps2_uart_write8(struct uart_port *port, u8 val, unsigned int off)
86 struct mps2_uart_port *mps_port = to_mps2_port(port);
88 writeb(val, mps_port->port.membase + off);
91 static u8 mps2_uart_read8(struct uart_port *port, unsigned int off)
93 struct mps2_uart_port *mps_port = to_mps2_port(port);
95 return readb(mps_port->port.membase + off);
98 static void mps2_uart_write32(struct uart_port *port, u32 val, unsigned int off)
100 struct mps2_uart_port *mps_port = to_mps2_port(port);
102 writel_relaxed(val, mps_port->port.membase + off);
105 static unsigned int mps2_uart_tx_empty(struct uart_port *port)
107 u8 status = mps2_uart_read8(port, UARTn_STATE);
112 static void mps2_uart_set_mctrl(struct uart_port *port, unsigned int mctrl)
116 static unsigned int mps2_uart_get_mctrl(struct uart_port *port)
121 static void mps2_uart_stop_tx(struct uart_port *port)
123 u8 control = mps2_uart_read8(port, UARTn_CTRL);
127 mps2_uart_write8(port, control, UARTn_CTRL);
130 static void mps2_uart_tx_chars(struct uart_port *port)
132 struct circ_buf *xmit = &port->state->xmit;
134 while (!(mps2_uart_read8(port, UARTn_STATE) & UARTn_STATE_TX_FULL)) {
135 if (port->x_char) {
136 mps2_uart_write8(port, port->x_char, UARTn_DATA);
137 port->x_char = 0;
138 port->icount.tx++;
142 if (uart_circ_empty(xmit) || uart_tx_stopped(port))
145 mps2_uart_write8(port, xmit->buf[xmit->tail], UARTn_DATA);
147 port->icount.tx++;
151 uart_write_wakeup(port);
154 mps2_uart_stop_tx(port);
157 static void mps2_uart_start_tx(struct uart_port *port)
159 u8 control = mps2_uart_read8(port, UARTn_CTRL);
163 mps2_uart_write8(port, control, UARTn_CTRL);
172 mps2_uart_tx_chars(port);
175 static void mps2_uart_stop_rx(struct uart_port *port)
177 u8 control = mps2_uart_read8(port, UARTn_CTRL);
181 mps2_uart_write8(port, control, UARTn_CTRL);
184 static void mps2_uart_break_ctl(struct uart_port *port, int ctl)
188 static void mps2_uart_rx_chars(struct uart_port *port)
190 struct tty_port *tport = &port->state->port;
192 while (mps2_uart_read8(port, UARTn_STATE) & UARTn_STATE_RX_FULL) {
193 u8 rxdata = mps2_uart_read8(port, UARTn_DATA);
195 port->icount.rx++;
196 tty_insert_flip_char(&port->state->port, rxdata, TTY_NORMAL);
204 struct uart_port *port = data;
205 u8 irqflag = mps2_uart_read8(port, UARTn_INT);
210 spin_lock(&port->lock);
212 mps2_uart_write8(port, UARTn_INT_RX, UARTn_INT);
213 mps2_uart_rx_chars(port);
215 spin_unlock(&port->lock);
222 struct uart_port *port = data;
223 u8 irqflag = mps2_uart_read8(port, UARTn_INT);
228 spin_lock(&port->lock);
230 mps2_uart_write8(port, UARTn_INT_TX, UARTn_INT);
231 mps2_uart_tx_chars(port);
233 spin_unlock(&port->lock);
241 struct uart_port *port = data;
242 u8 irqflag = mps2_uart_read8(port, UARTn_INT);
244 spin_lock(&port->lock);
247 struct tty_port *tport = &port->state->port;
249 mps2_uart_write8(port, UARTn_INT_RX_OVERRUN, UARTn_INT);
250 port->icount.overrun++;
262 mps2_uart_write8(port, UARTn_INT_TX_OVERRUN, UARTn_INT);
266 spin_unlock(&port->lock);
285 static int mps2_uart_startup(struct uart_port *port)
287 struct mps2_uart_port *mps_port = to_mps2_port(port);
288 u8 control = mps2_uart_read8(port, UARTn_CTRL);
293 mps2_uart_write8(port, control, UARTn_CTRL);
296 ret = request_irq(port->irq, mps2_uart_combinedirq, 0,
300 dev_err(port->dev, "failed to register combinedirq (%d)\n", ret);
304 ret = request_irq(port->irq, mps2_uart_oerrirq, IRQF_SHARED,
308 dev_err(port->dev, "failed to register oerrirq (%d)\n", ret);
315 dev_err(port->dev, "failed to register rxirq (%d)\n", ret);
322 dev_err(port->dev, "failed to register txirq (%d)\n", ret);
330 mps2_uart_write8(port, control, UARTn_CTRL);
337 free_irq(port->irq, mps_port);
342 static void mps2_uart_shutdown(struct uart_port *port)
344 struct mps2_uart_port *mps_port = to_mps2_port(port);
345 u8 control = mps2_uart_read8(port, UARTn_CTRL);
349 mps2_uart_write8(port, control, UARTn_CTRL);
356 free_irq(port->irq, mps_port);
360 mps2_uart_set_termios(struct uart_port *port, struct ktermios *termios,
372 baud = uart_get_baud_rate(port, termios, old,
373 DIV_ROUND_CLOSEST(port->uartclk, UARTn_BAUDDIV_MASK),
374 DIV_ROUND_CLOSEST(port->uartclk, 16));
376 bauddiv = DIV_ROUND_CLOSEST(port->uartclk, baud);
378 spin_lock_irqsave(&port->lock, flags);
380 uart_update_timeout(port, termios->c_cflag, baud);
381 mps2_uart_write32(port, bauddiv, UARTn_BAUDDIV);
383 spin_unlock_irqrestore(&port->lock, flags);
389 static const char *mps2_uart_type(struct uart_port *port)
391 return (port->type == PORT_MPS2UART) ? DRIVER_NAME : NULL;
394 static void mps2_uart_release_port(struct uart_port *port)
398 static int mps2_uart_request_port(struct uart_port *port)
403 static void mps2_uart_config_port(struct uart_port *port, int type)
405 if (type & UART_CONFIG_TYPE && !mps2_uart_request_port(port))
406 port->type = PORT_MPS2UART;
409 static int mps2_uart_verify_port(struct uart_port *port, struct serial_struct *serinfo)
435 static void mps2_uart_console_putchar(struct uart_port *port, int ch)
437 while (mps2_uart_read8(port, UARTn_STATE) & UARTn_STATE_TX_FULL)
440 mps2_uart_write8(port, ch, UARTn_DATA);
446 struct uart_port *port = &mps_port->port;
448 uart_console_write(port, s, cnt, mps2_uart_console_putchar);
470 return uart_set_options(&mps_port->port, co, baud, parity, bits, flow);
487 static void mps2_early_putchar(struct uart_port *port, int ch)
489 while (readb(port->membase + UARTn_STATE) & UARTn_STATE_TX_FULL)
492 writeb((unsigned char)ch, port->membase + UARTn_DATA);
499 uart_console_write(&dev->port, s, n, mps2_early_putchar);
505 if (!device->port.membase)
549 mps_port->port.line = id;
561 mps_port->port.membase = devm_ioremap_resource(&pdev->dev, res);
562 if (IS_ERR(mps_port->port.membase))
563 return PTR_ERR(mps_port->port.membase);
565 mps_port->port.mapbase = res->start;
566 mps_port->port.mapsize = resource_size(res);
567 mps_port->port.iotype = UPIO_MEM;
568 mps_port->port.flags = UPF_BOOT_AUTOCONF;
569 mps_port->port.fifosize = 1;
570 mps_port->port.ops = &mps2_uart_pops;
571 mps_port->port.dev = &pdev->dev;
581 mps_port->port.uartclk = clk_get_rate(mps_port->clk);
587 mps_port->port.irq = platform_get_irq(pdev, 0);
591 mps_port->port.irq = platform_get_irq(pdev, 2);
615 ret = uart_add_one_port(&mps2_uart_driver, &mps_port->port);