[U-Boot] [PATCH 04/14] serial: 16550: Add getfcr accessor

[Simon Glass]

On 25 November 2016 at 15:32, Marek Vasut <marex at denx.de> wrote:
> Add function which allows fetching the default FCR register setting
> from platform data for DM , while retaining old behavior for non-DM
> by returning UART_FCRVAL.
>
> Signed-off-by: Marek Vasut <marex at denx.de>
> Cc: Tom Rini <trini at konsulko.com>
> Cc: Simon Glass <sjg at chromium.org>
> ---
> V2: If CONFIG_DM_SERIAL and DEBUG_UART are enabled, the ns16550_getfcr()
>     can be invoked with NULL plat data . Check for this case and return
>     the default UART_FCRVAL then.
> V3: It turns out that if DEBUG_UART is defined, $port points directly to
>     hardware registers. Add additional ifdef to handle the case where
>     debug uart is enabled with DM_SERIAL correctly.
> V4: Use UART_FCRVAL in _debug_uart_init() directly
> ---
>  drivers/serial/ns16550.c | 18 ++++++++++++++++--
>  include/ns16550.h        |  1 +
>  2 files changed, 17 insertions(+), 2 deletions(-)

Reviewed-by: Simon Glass <sjg at chromium.org>