aboutsummaryrefslogtreecommitdiff
path: root/drivers/serial/sh-sci.h
diff options
context:
space:
mode:
authorNobuhiro Iwamatsu <iwamatsu.nobuhiro@renesas.com>2008-10-03 17:37:31 +0900
committerPaul Mundt <lethal@linux-sh.org>2008-10-20 11:46:17 +0900
commitba1d28181c586deec468cc6ae558c0c099f1b956 (patch)
tree488430d14a3886e84a04c10c7e6f3a8a8ed34d7c /drivers/serial/sh-sci.h
parentf400f510df4e29bd00ffe07981ec703070cb9e19 (diff)
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/sh-sci.h')
-rw-r--r--drivers/serial/sh-sci.h9
1 files changed, 8 insertions, 1 deletions
diff --git a/drivers/serial/sh-sci.h b/drivers/serial/sh-sci.h
index 511c10d4218..7cd28b22680 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 */