From bb72148b2bbc026336d832edcb7bf9e2bde827df Mon Sep 17 00:00:00 2001
From: Masahiro Yamada <yamada.m@jp.panasonic.com>
Date: Fri, 24 Oct 2014 17:00:10 +0900
Subject: [PATCH] serial: UniPhier: add .pending handler
Without .pending handler, tstc() function always returns 1.
Signed-off-by: Masahiro Yamada <yamada.m@jp.panasonic.com>
---
drivers/serial/serial_uniphier.c | 11 +++++++++++
1 file changed, 11 insertions(+)
diff --git a/drivers/serial/serial_uniphier.c b/drivers/serial/serial_uniphier.c
index 9114b3ed60..faa69f0a27 100644
--- a/drivers/serial/serial_uniphier.c
+++ b/drivers/serial/serial_uniphier.c
@@ -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) = {
--
2.39.5