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| author | Oleksij Rempel <linux@rempel-privat.de> | 2017-09-06 16:44:10 +0200 |
|---|---|---|
| committer | Sascha Hauer <s.hauer@pengutronix.de> | 2017-09-08 08:25:23 +0200 |
| commit | 9ee91ad1c938ff577b3925baf2c41614608b819c (patch) | |
| tree | 70345f6c5527d34a3ad2142aa6805ac274c94af4 /drivers/serial | |
| parent | e2cea82facc9cd5302600de9e92fe40e956c263f (diff) | |
| download | barebox-9ee91ad1c938ff577b3925baf2c41614608b819c.tar.gz barebox-9ee91ad1c938ff577b3925baf2c41614608b819c.tar.xz | |
serial: ns16550: provide big-endian support
we need it at least for QCA AR9344
Signed-off-by: Oleksij Rempel <linux@rempel-privat.de>
Signed-off-by: Sascha Hauer <s.hauer@pengutronix.de>
Diffstat (limited to 'drivers/serial')
| -rw-r--r-- | drivers/serial/serial_ns16550.c | 19 |
1 files 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", |