ARM: OMAP2xxx: clock: add APLL rate recalculation functions

OMAP2420 and OMAP2430 chips each have two on-chip APLLs.  When locked,
one APLL generates a 96 MHz rate; the other, a 54 MHz rate.
Previously we treated these clocks as fixed-rate clocks at the locked
rates, but this isn't quite right.  The locked rate should be returned
when the APLL is locked, and a zero rate should be returned when the
APLL is stopped.  This patch adds the infrastructure that will be used
by the CCF changes.

Signed-off-by: Paul Walmsley <paul@pwsan.com>
Signed-off-by: Mike Turquette <mturquette@ti.com>
Cc: Rajendra Nayak <rnayak@ti.com>

1 files changed, 4 insertions, 0 deletions

diff --git a/arch/arm/mach-omap2/clock2xxx.h b/arch/arm/mach-omap2/clock2xxx.h
index 58581511d795..82147c49a8de 100644
--- a/arch/arm/mach-omap2/clock2xxx.h
+++ b/arch/arm/mach-omap2/clock2xxx.h
@@ -27,6 +27,10 @@ unsigned long omap2_dpllcore_recalc(struct clk_hw *hw,
 int omap2_reprogram_dpllcore(struct clk_hw *clk, unsigned long rate,
                              unsigned long parent_rate);
 void omap2xxx_clkt_dpllcore_init(struct clk_hw *hw);
+unsigned long omap2_clk_apll54_recalc(struct clk_hw *hw,
+                                      unsigned long parent_rate);
+unsigned long omap2_clk_apll96_recalc(struct clk_hw *hw,
+                                      unsigned long parent_rate);
 #else
 unsigned long omap2_table_mpu_recalc(struct clk *clk);
 int omap2_select_table_rate(struct clk *clk, unsigned long rate);