OMAP2+ clock: clean up clkt_clksel.c

This patch cleans up arch/arm/mach-omap2/clkt_clksel.c.  It:

- makes several functions static that are not called outside the file;

- adds documentation;

- makes some code paths easier to read (hopefully), by breaking up
  compound statements and removing redundant checks;

- converts some pr_err()s that indicate clock tree data problems into WARN()s,
  so they are more likely to be noticed;

- and moves omap2_clk_round_rate() back into mach-omap2/clock.c, its proper
  home, since it is not clksel-specific.

Signed-off-by: Paul Walmsley <paul@pwsan.com>

1 files changed, 9 insertions, 0 deletions

diff --git a/arch/arm/mach-omap2/clock.c b/arch/arm/mach-omap2/clock.c
index a6d0b34b7990..605f531783a8 100644
--- a/arch/arm/mach-omap2/clock.c
+++ b/arch/arm/mach-omap2/clock.c
@@ -334,6 +334,15 @@ oce_err1:
 	return ret;
 }
 
+/* Given a clock and a rate apply a clock specific rounding function */
+long omap2_clk_round_rate(struct clk *clk, unsigned long rate)
+{
+	if (clk->round_rate)
+		return clk->round_rate(clk, rate);
+
+	return clk->rate;
+}
+
 /* Set the clock rate for a clock source */
 int omap2_clk_set_rate(struct clk *clk, unsigned long rate)
 {