On 11/12/2014, 09:46 AM, Kevin Cernekee wrote:
> With a few tweaks, the PXA serial driver can handle other 16550A clones.
> Add a fifo-size DT property to override the FIFO depth (BCM7xxx uses 32),
> and {native,big}-endian properties similar to regmap to support SoCs that
> have BE or "automagic endian" registers.
>
> Signed-off-by: Kevin Cernekee <cernekee@xxxxxxxxx>
> ---
> drivers/tty/serial/pxa.c | 16 ++++++++++++++--
> 1 file changed, 14 insertions(+), 2 deletions(-)
>
> diff --git a/drivers/tty/serial/pxa.c b/drivers/tty/serial/pxa.c
> index 21b7d8b..78ed7ee 100644
> --- a/drivers/tty/serial/pxa.c
> +++ b/drivers/tty/serial/pxa.c
> @@ -60,13 +60,19 @@ struct uart_pxa_port {
> static inline unsigned int serial_in(struct uart_pxa_port *up, int offset)
> {
> offset <<= 2;
> - return readl(up->port.membase + offset);
> + if (!up->port.big_endian)
> + return readl(up->port.membase + offset);
> + else
> + return ioread32be(up->port.membase + offset);
This needn't fly IMO, unless you map the space using iomap (not ioremap).
--
js
suse labs
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