serial: sh-sci: Add support SCIF of SH7723
PATCH 1/1 serial: sh-sci: Add support SCIF of SH7723
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 <[email protected]>
--- drivers/serial/sh-sci.h | 9 ++++++++- 1 files changed, 8 insertions(+), 1 deletions(-)
drivers/serial/sh-sci.h +8 -1
@@ -791,7 +791,14 @@ 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) (((CONFIG_CPU_CLOCK*1000/32)/bps)-1)#elif defined(CONFIG_SUPERH64 )
-- 1.5.6.3
Quoted 6 lines · Nobuhiro Iwamatsu
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 <[email protected]>
Ok, applied. I have a large rewrite of sh-sci pending, but there is no harm in merging this for 2.6.28.