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| author | Masahiro Yamada <yamada.m@jp.panasonic.com> | 2014-10-24 17:00:10 +0900 |
|---|---|---|
| committer | Masahiro Yamada <yamada.m@jp.panasonic.com> | 2014-10-29 22:53:42 +0900 |
| commit | bb72148b2bbc026336d832edcb7bf9e2bde827df (patch) | |
| tree | 7771b75631115598efeff1e37c32fa99b9860bca /drivers/serial/serial_uniphier.c | |
| parent | 59ca5537be1f17abd6d36dffb5a522b89f36163a (diff) | |
| download | u-boot-imx-bb72148b2bbc026336d832edcb7bf9e2bde827df.zip u-boot-imx-bb72148b2bbc026336d832edcb7bf9e2bde827df.tar.gz u-boot-imx-bb72148b2bbc026336d832edcb7bf9e2bde827df.tar.bz2 | |
serial: UniPhier: add .pending handler
Without .pending handler, tstc() function always returns 1.
Signed-off-by: Masahiro Yamada <yamada.m@jp.panasonic.com>
Diffstat (limited to 'drivers/serial/serial_uniphier.c')
| -rw-r--r-- | drivers/serial/serial_uniphier.c | 11 |
1 files changed, 11 insertions, 0 deletions
diff --git a/drivers/serial/serial_uniphier.c b/drivers/serial/serial_uniphier.c index 9114b3e..faa69f0 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) = { |