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serial: liteuart: separate rx loop from poll timer

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Convert the rx loop into its own dedicated function, and (for now)
call it from the poll timer. This is in preparation for adding irq
support to the receive path.

Signed-off-by: Gabriel Somlo <gsomlo@gmail.com>
Reviewed-by: Ilpo Järvinen <ilpo.jarvinen@linux.intel.com>
Reviewed-by: Jiri Slaby <jirislaby@kernel.org>
Link: https://lore.kernel.org/r/20221123130500.1030189-11-gsomlo@gmail.com
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
This commit is contained in:
Gabriel Somlo 2022-11-23 08:04:56 -05:00 committed by Greg Kroah-Hartman
parent a774aa4580
commit 5dcceabe8e
1 changed files with 9 additions and 3 deletions
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12
drivers/tty/serial/liteuart.c
View file

@ -68,10 +68,8 @@ static struct uart_driver liteuart_driver = {
#endif
};
static void liteuart_timer(struct timer_list *t)
static void liteuart_rx_chars(struct uart_port *port)
{
struct liteuart_port *uart = from_timer(uart, t, timer);
struct uart_port *port = &uart->port;
unsigned char __iomem *membase = port->membase;
u8 ch;
@ -88,6 +86,14 @@ static void liteuart_timer(struct timer_list *t)
}
tty_flip_buffer_push(&port->state->port);
}
static void liteuart_timer(struct timer_list *t)
{
struct liteuart_port *uart = from_timer(uart, t, timer);
struct uart_port *port = &uart->port;
liteuart_rx_chars(port);
mod_timer(&uart->timer, jiffies + uart_poll_timeout(port));
}