From: Oleksij Rempel <o.rempel@pengutronix.de>
To: l.stach@pengutronix.de
Cc: Oleksij Rempel <o.rempel@pengutronix.de>, barebox@lists.infradead.org
Subject: [PATCH v1 2/2] serial: ns16550: provide big-endian support
Date: Thu, 27 Jul 2017 07:00:55 +0200 [thread overview]
Message-ID: <20170727050055.14188-2-o.rempel@pengutronix.de> (raw)
In-Reply-To: <20170727050055.14188-1-o.rempel@pengutronix.de>
we need it at least for QCA AR9344
Signed-off-by: Oleksij Rempel <o.rempel@pengutronix.de>
---
drivers/serial/serial_ns16550.c | 19 +++++++++++++++++--
1 file changed, 17 insertions(+), 2 deletions(-)
diff --git a/drivers/serial/serial_ns16550.c b/drivers/serial/serial_ns16550.c
index a8953cd99d..4d73ea8b87 100644
--- a/drivers/serial/serial_ns16550.c
+++ b/drivers/serial/serial_ns16550.c
@@ -94,6 +94,16 @@ static void ns16550_write_reg_mmio_32(struct ns16550_priv *priv, uint8_t val, un
writel(val, priv->mmiobase + offset);
}
+static uint8_t ns16550_read_reg_mmio_32be(struct ns16550_priv *priv, unsigned offset)
+{
+ return ioread32be(priv->mmiobase + offset);
+}
+
+static void ns16550_write_reg_mmio_32be(struct ns16550_priv *priv, uint8_t val, unsigned offset)
+{
+ iowrite32be(val, priv->mmiobase + offset);
+}
+
static uint8_t ns16550_read_reg_ioport_8(struct ns16550_priv *priv, unsigned offset)
{
return inb(priv->iobase + offset);
@@ -305,8 +315,13 @@ static void ns16550_probe_dt(struct device_d *dev, struct ns16550_priv *priv)
priv->write_reg = ns16550_write_reg_mmio_16;
break;
case 4:
- priv->read_reg = ns16550_read_reg_mmio_32;
- priv->write_reg = ns16550_write_reg_mmio_32;
+ if (of_device_is_big_endian(np)) {
+ priv->read_reg = ns16550_read_reg_mmio_32be;
+ priv->write_reg = ns16550_write_reg_mmio_32be;
+ } else {
+ priv->read_reg = ns16550_read_reg_mmio_32;
+ priv->write_reg = ns16550_write_reg_mmio_32;
+ }
break;
default:
dev_err(dev, "unsupported reg-io-width (%d)\n",
--
2.11.0
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next prev parent reply other threads:[~2017-07-27 5:01 UTC|newest]
Thread overview: 5+ messages / expand[flat|nested] mbox.gz Atom feed top
2017-07-27 5:00 [PATCH v1 1/2] of: base: port of_device_is_big_endian from linux Oleksij Rempel
2017-07-27 5:00 ` Oleksij Rempel [this message]
2017-07-31 10:03 ` [PATCH v1 2/2] serial: ns16550: provide big-endian support Lucas Stach
2017-08-01 10:55 ` Oleksij Rempel
2017-07-31 10:02 ` [PATCH v1 1/2] of: base: port of_device_is_big_endian from linux Lucas Stach
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