arm: ux500: implement clk_set_rate for some multimedia clocks

This patch implements clk_set_rate (and clk_round_rate)
for lcdclk, tvclk, and hdmiclk, as well as some
infrastructure needed by this and coming changes.

ST Ericsson ID: 343004, 359227
ST Ericsson FOSS-OUT ID: trivial
ST Ericsson Linux next: -

Change-Id: I8eddef534724cd11aaad4a867d217f5df31a5302
Signed-off-by: Mattias Nilsson <mattias.i.nilsson@stericsson.com>
Reviewed-on: http://gerrit.lud.stericsson.com/gerrit/30913
Reviewed-by: Jonas ABERG <jonas.aberg@stericsson.com>
Reviewed-on: http://gerrit.lud.stericsson.com/gerrit/32139
Tested-by: Jonas ABERG <jonas.aberg@stericsson.com>

1 files changed, 12 insertions, 0 deletions

diff --git a/include/linux/mfd/dbx500-prcmu.h b/include/linux/mfd/dbx500-prcmu.h
index a0be8cba9fd..98367ad7d2b 100644
--- a/include/linux/mfd/dbx500-prcmu.h
+++ b/include/linux/mfd/dbx500-prcmu.h
@@ -291,6 +291,8 @@ static inline int prcmu_request_clock(u8 clock, bool enable)
 }
 
 unsigned long prcmu_clock_rate(u8 clock);
+long prcmu_round_clock_rate(u8 clock, unsigned long rate);
+int prcmu_set_clock_rate(u8 clock, unsigned long rate);
 
 int prcmu_set_ape_opp(u8 opp);
 int prcmu_get_ape_opp(void);
@@ -410,6 +412,16 @@ static inline int prcmu_request_clock(u8 clock, bool enable)
 	return 0;
 }
 
+static inline long prcmu_round_clock_rate(u8 clock, unsigned long rate)
+{
+	return 0;
+}
+
+static inline int prcmu_set_clock_rate(u8 clock, unsigned long rate)
+{
+	return 0;
+}
+
 static inline unsigned long prcmu_clock_rate(u8 clock)
 {
 	return 0;