Techwizz/kernel-fxtec-pro1x
1
0
Fork 0
Code Issues Pull requests Projects Releases Packages Wiki Activity

serial: sh-sci: Add support SCIF of SH7723

Browse source 
SH7723 has two types of SCIF (SCIF and SCIFA).
The current sh-sci driver supports only SCIFA, and calculation methods of SCBRR
are different.
This patch support this methods.

Signed-off-by: Nobuhiro Iwamatsu <iwamatsu.nobuhiro@renesas.com>
Signed-off-by: Paul Mundt <lethal@linux-sh.org>
This commit is contained in:
Nobuhiro Iwamatsu 2008-10-03 17:37:31 +09:00 committed by Paul Mundt
parent f400f510df
commit ba1d28181c
1 changed files with 8 additions and 1 deletions
Show stats Download patch file Download diff file Expand all files Collapse all files

9
drivers/serial/sh-sci.h
View file

@ -789,7 +789,14 @@ static inline int sci_rxd_in(struct uart_port *port)
defined(CONFIG_CPU_SUBTYPE_SH7721)
#define SCBRR_VALUE(bps, clk) (((clk*2)+16*bps)/(32*bps)-1)
#elif defined(CONFIG_CPU_SUBTYPE_SH7723)
#define SCBRR_VALUE(bps, clk) (((clk*2)+16*bps)/(16*bps)-1)
static inline int scbrr_calc(struct uart_port *port, int bps, int clk)
{
if (port->type == PORT_SCIF)
return (clk+16*bps)/(32*bps)-1;
else
return ((clk*2)+16*bps)/(16*bps)-1;
}
#define SCBRR_VALUE(bps, clk) scbrr_calc(port, bps, clk)
#elif defined(__H8300H__) || defined(__H8300S__)
#define SCBRR_VALUE(bps, clk) (((clk*1000/32)/bps)-1)
#else /* Generic SH */