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| author | Nobuhiro Iwamatsu <iwamatsu.nobuhiro@renesas.com> | 2008-10-03 17:37:31 +0900 |
|---|---|---|
| committer | Paul Mundt <lethal@linux-sh.org> | 2008-10-20 11:46:17 +0900 |
| commit | ba1d28181c586deec468cc6ae558c0c099f1b956 (patch) | |
| tree | 488430d14a3886e84a04c10c7e6f3a8a8ed34d7c /drivers/serial | |
| parent | f400f510df4e29bd00ffe07981ec703070cb9e19 (diff) | |
| download | linux-ba1d28181c586deec468cc6ae558c0c099f1b956.tar.gz linux-ba1d28181c586deec468cc6ae558c0c099f1b956.tar.bz2 linux-ba1d28181c586deec468cc6ae558c0c099f1b956.zip | |
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 <iwamatsu.nobuhiro@renesas.com>
Signed-off-by: Paul Mundt <lethal@linux-sh.org>
Diffstat (limited to 'drivers/serial')
| -rw-r--r-- | drivers/serial/sh-sci.h | 9 |
1 files changed, 8 insertions, 1 deletions
diff --git a/drivers/serial/sh-sci.h b/drivers/serial/sh-sci.h index 511c10d42187..7cd28b226800 100644 --- a/drivers/serial/sh-sci.h +++ b/drivers/serial/sh-sci.h @@ -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 */ |