OMAP2/3 clock: use symbolic constants in omap2_clk_wait_ready()

Convert the bare constants in the register arithmetic in
omap2_clk_wait_ready() to use meaningful symbolic names.

Signed-off-by: Paul Walmsley <paul@pwsan.com>
Signed-off-by: Tony Lindgren <tony@atomide.com>

diff --git a/arch/arm/mach-omap2/clock.c b/arch/arm/mach-omap2/clock.c
index 2bdd587..ebf2d7e 100644 (file)
--- a/arch/arm/mach-omap2/clock.c
+++ b/arch/arm/mach-omap2/clock.c
@@ -65,6 +65,13 @@
 #define ST_CORE_CLK_REF                        0x1
 #define ST_CORE_CLK_32K                        0x3
 
+/* Bitmask to isolate the register type of clk.enable_reg */
+#define PRCM_REGTYPE_MASK              0xf0
+/* various CM register type options */
+#define CM_FCLKEN_REGTYPE              0x00
+#define CM_ICLKEN_REGTYPE              0x10
+#define CM_IDLEST_REGTYPE              0x20
+
 u8 cpu_mask;
 
 /*-------------------------------------------------------------------------
@@ -301,12 +308,13 @@ static void omap2_clk_wait_ready(struct clk *clk)
        prcm_mod = reg & ~0xff;
        prcm_regid = reg & 0xff;
 
+       other_reg = reg & ~PRCM_REGTYPE_MASK;
+
+       /* If we are enabling an fclk, also test the iclk; and vice versa */
        if (prcm_regid >= CM_FCLKEN1 && prcm_regid <= OMAP24XX_CM_FCLKEN2)
-               other_reg = ((reg & ~0xf0) | 0x10); /* CM_ICLKEN* */
-       else if (prcm_regid >= CM_ICLKEN1 && prcm_regid <= OMAP24XX_CM_ICLKEN4)
-               other_reg = ((reg & ~0xf0) | 0x00); /* CM_FCLKEN* */
+               other_reg |= CM_ICLKEN_REGTYPE;
        else
-               return;
+               other_reg |= CM_FCLKEN_REGTYPE;
 
        /* Covers most of the cases - a few exceptions are below */
        other_bit = 1 << clk->enable_bit;
@@ -377,7 +385,8 @@ static void omap2_clk_wait_ready(struct clk *clk)
        if (!(__raw_readl((void __iomem *)other_reg) & other_bit))
                return;
 
-       idlest_reg = ((other_reg & ~0xf0) | 0x20); /* CM_IDLEST* */
+       idlest_reg = other_reg & ~PRCM_REGTYPE_MASK;
+       idlest_reg |= CM_IDLEST_REGTYPE;
 
        omap2_wait_clock_ready((void __iomem *)idlest_reg, idlest_bit,
                               clk->name);