diff options
Diffstat (limited to 'drivers/serial/amba-pl011.c')
-rw-r--r-- | drivers/serial/amba-pl011.c | 30 |
1 files changed, 30 insertions, 0 deletions
diff --git a/drivers/serial/amba-pl011.c b/drivers/serial/amba-pl011.c index 40604a092921..08adc1de4a79 100644 --- a/drivers/serial/amba-pl011.c +++ b/drivers/serial/amba-pl011.c | |||
@@ -314,6 +314,32 @@ static void pl011_break_ctl(struct uart_port *port, int break_state) | |||
314 | spin_unlock_irqrestore(&uap->port.lock, flags); | 314 | spin_unlock_irqrestore(&uap->port.lock, flags); |
315 | } | 315 | } |
316 | 316 | ||
317 | #ifdef CONFIG_CONSOLE_POLL | ||
318 | static int pl010_get_poll_char(struct uart_port *port) | ||
319 | { | ||
320 | struct uart_amba_port *uap = (struct uart_amba_port *)port; | ||
321 | unsigned int status; | ||
322 | |||
323 | do { | ||
324 | status = readw(uap->port.membase + UART01x_FR); | ||
325 | } while (status & UART01x_FR_RXFE); | ||
326 | |||
327 | return readw(uap->port.membase + UART01x_DR); | ||
328 | } | ||
329 | |||
330 | static void pl010_put_poll_char(struct uart_port *port, | ||
331 | unsigned char ch) | ||
332 | { | ||
333 | struct uart_amba_port *uap = (struct uart_amba_port *)port; | ||
334 | |||
335 | while (readw(uap->port.membase + UART01x_FR) & UART01x_FR_TXFF) | ||
336 | barrier(); | ||
337 | |||
338 | writew(ch, uap->port.membase + UART01x_DR); | ||
339 | } | ||
340 | |||
341 | #endif /* CONFIG_CONSOLE_POLL */ | ||
342 | |||
317 | static int pl011_startup(struct uart_port *port) | 343 | static int pl011_startup(struct uart_port *port) |
318 | { | 344 | { |
319 | struct uart_amba_port *uap = (struct uart_amba_port *)port; | 345 | struct uart_amba_port *uap = (struct uart_amba_port *)port; |
@@ -572,6 +598,10 @@ static struct uart_ops amba_pl011_pops = { | |||
572 | .request_port = pl010_request_port, | 598 | .request_port = pl010_request_port, |
573 | .config_port = pl010_config_port, | 599 | .config_port = pl010_config_port, |
574 | .verify_port = pl010_verify_port, | 600 | .verify_port = pl010_verify_port, |
601 | #ifdef CONFIG_CONSOLE_POLL | ||
602 | .poll_get_char = pl010_get_poll_char, | ||
603 | .poll_put_char = pl010_put_poll_char, | ||
604 | #endif | ||
575 | }; | 605 | }; |
576 | 606 | ||
577 | static struct uart_amba_port *amba_ports[UART_NR]; | 607 | static struct uart_amba_port *amba_ports[UART_NR]; |