From: Masahiro Yamada <yamada.m@jp.panasonic.com>
Date: Fri, 24 Oct 2014 08:00:10 +0000 (+0900)
Subject: serial: UniPhier: add .pending handler
X-Git-Url: http://git.lede-project.org./?a=commitdiff_plain;h=bb72148b2bbc026336d832edcb7bf9e2bde827df;p=project%2Fbcm63xx%2Fu-boot.git

serial: UniPhier: add .pending handler

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

Signed-off-by: Masahiro Yamada <yamada.m@jp.panasonic.com>
---

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) = {