serial: sh-sci: Simplify baud rate calculation algorithms

Rewrite the baud rate register value calculations in easier to read
forms. The computed value isn't modified.

Signed-off-by: Laurent Pinchart <laurent.pinchart+renesas@ideasonboard.com>
Acked-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Signed-off-by: Simon Horman <horms+renesas@verge.net.au>

1 files changed, 4 insertions, 4 deletions

diff --git a/include/linux/serial_sci.h b/include/linux/serial_sci.h
index babc5fe070b9..12cf50c1c047 100644
--- a/include/linux/serial_sci.h
+++ b/include/linux/serial_sci.h
@@ -11,10 +11,10 @@
 #define SCIx_NOT_SUPPORTED      (-1)
 
 enum {
-        SCBRR_ALGO_1,           /* ((clk + 16 * bps) / (16 * bps) - 1) */
-        SCBRR_ALGO_2,           /* ((clk + 16 * bps) / (32 * bps) - 1) */
-        SCBRR_ALGO_3,           /* (((clk * 2) + 16 * bps) / (16 * bps) - 1) */
-        SCBRR_ALGO_4,           /* (((clk * 2) + 16 * bps) / (32 * bps) - 1) */
+        SCBRR_ALGO_1,           /* clk / (16 * bps) */
+        SCBRR_ALGO_2,           /* DIV_ROUND_CLOSEST(clk, 32 * bps) - 1 */
+        SCBRR_ALGO_3,           /* clk / (8 * bps) */
+        SCBRR_ALGO_4,           /* DIV_ROUND_CLOSEST(clk, 16 * bps) - 1 */
         SCBRR_ALGO_6,           /* HSCIF variable sample rate algorithm */
 };