serial: sh-sci: Move SCBRR calculation algo in to platform data.
This permits each port to select its own SCBRR calculation algorithm,
rather than having it all ifdef'ed in the header. There are presently
only 5 different variations that all parts fall under.
Signed-off-by: Paul Mundt <lethal@linux-sh.org>
diff --git a/include/linux/serial_sci.h b/include/linux/serial_sci.h
index f722a22..ff856b5 100644
--- a/include/linux/serial_sci.h
+++ b/include/linux/serial_sci.h
@@ -7,6 +7,14 @@
* Generic header for SuperH SCI(F) (used by sh/sh64/h8300 and related parts)
*/
+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_5, /* (((clk * 1000 / 32) / bps) - 1) */
+};
+
#define SCSCR_TIE (1 << 7)
#define SCSCR_RIE (1 << 6)
#define SCSCR_TE (1 << 5)
@@ -36,6 +44,7 @@
upf_t flags; /* UPF_* flags */
char *clk; /* clock string */
+ unsigned int scbrr_algo_id; /* SCBRR calculation algo */
unsigned int scscr; /* SCSCR initialization */
};