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serial: UniPhier: add .pending handler

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Without .pending handler, tstc() function always returns 1.

Signed-off-by: Masahiro Yamada <yamada.m@jp.panasonic.com>
This commit is contained in:
Masahiro Yamada 2014-10-24 17:00:10 +09:00
parent 59ca5537be
commit bb72148b2b
1 changed files with 11 additions and 0 deletions
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11
drivers/serial/serial_uniphier.c
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@ -93,6 +93,16 @@ static int uniphier_serial_putc(struct udevice *dev, const char c)
return 0;
}
static int uniphier_serial_pending(struct udevice *dev, bool input)
{
struct uniphier_serial __iomem *port = uniphier_serial_port(dev);
if (input)
return readb(&port->lsr) & UART_LSR_DR;
else
return !(readb(&port->lsr) & UART_LSR_THRE);
}
int uniphier_serial_probe(struct udevice *dev)
{
struct uniphier_serial_private_data *priv = dev_get_priv(dev);
@ -134,6 +144,7 @@ static const struct dm_serial_ops uniphier_serial_ops = {
.setbrg = uniphier_serial_setbrg,
.getc = uniphier_serial_getc,
.putc = uniphier_serial_putc,
.pending = uniphier_serial_pending,
};
U_BOOT_DRIVER(uniphier_serial) = {