Merge branch 'omap-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tmlind...

[pandora-kernel.git] / arch / arm / mach-omap2 / dpll3xxx.c

diff --git a/arch/arm/mach-omap2/dpll3xxx.c b/arch/arm/mach-omap2/dpll3xxx.c
index ebb888f..f77022b 100644 (file)
--- a/arch/arm/mach-omap2/dpll3xxx.c
+++ b/arch/arm/mach-omap2/dpll3xxx.c
@@ -32,9 +32,7 @@
 #include <plat/clock.h>
 
 #include "clock.h"
-#include "prm.h"
-#include "prm-regbits-34xx.h"
-#include "cm.h"
+#include "cm2xxx_3xxx.h"
 #include "cm-regbits-34xx.h"
 
 /* CM_AUTOIDLE_PLL*.AUTO_* bit values */
@@ -225,10 +223,9 @@ static int _omap3_noncore_dpll_stop(struct clk *clk)
 }
 
 /**
- * lookup_dco_sddiv -  Set j-type DPLL4 compensation variables
+ * _lookup_dco - Lookup DCO used by j-type DPLL
  * @clk: pointer to a DPLL struct clk
  * @dco: digital control oscillator selector
- * @sd_div: target sigma-delta divider
  * @m: DPLL multiplier to set
  * @n: DPLL divider to set
  *
@@ -237,11 +234,9 @@ static int _omap3_noncore_dpll_stop(struct clk *clk)
  * XXX This code is not needed for 3430/AM35xx; can it be optimized
  * out in non-multi-OMAP builds for those chips?
  */
-static void lookup_dco_sddiv(struct clk *clk, u8 *dco, u8 *sd_div, u16 m,
-                            u8 n)
+static void _lookup_dco(struct clk *clk, u8 *dco, u16 m, u8 n)
 {
-       unsigned long fint, clkinp, sd; /* watch out for overflow */
-       int mod1, mod2;
+       unsigned long fint, clkinp; /* watch out for overflow */
 
        clkinp = clk->parent->rate;
        fint = (clkinp / n) * m;
@@ -250,6 +245,27 @@ static void lookup_dco_sddiv(struct clk *clk, u8 *dco, u8 *sd_div, u16 m,
                *dco = 2;
        else
                *dco = 4;
+}
+
+/**
+ * _lookup_sddiv - Calculate sigma delta divider for j-type DPLL
+ * @clk: pointer to a DPLL struct clk
+ * @sd_div: target sigma-delta divider
+ * @m: DPLL multiplier to set
+ * @n: DPLL divider to set
+ *
+ * See 36xx TRM section 3.5.3.3.3.2 "Type B DPLL (Low-Jitter)"
+ *
+ * XXX This code is not needed for 3430/AM35xx; can it be optimized
+ * out in non-multi-OMAP builds for those chips?
+ */
+static void _lookup_sddiv(struct clk *clk, u8 *sd_div, u16 m, u8 n)
+{
+       unsigned long clkinp, sd; /* watch out for overflow */
+       int mod1, mod2;
+
+       clkinp = clk->parent->rate;
+
        /*
         * target sigma-delta to near 250MHz
         * sd = ceil[(m/(n+1)) * (clkinp_MHz / 250)]
@@ -278,6 +294,7 @@ static void lookup_dco_sddiv(struct clk *clk, u8 *dco, u8 *sd_div, u16 m,
 static int omap3_noncore_dpll_program(struct clk *clk, u16 m, u8 n, u16 freqsel)
 {
        struct dpll_data *dd = clk->dpll_data;
+       u8 dco, sd_div;
        u32 v;
 
        /* 3430 ES2 TRM: 4.7.6.9 DPLL Programming Sequence */
@@ -300,18 +317,16 @@ static int omap3_noncore_dpll_program(struct clk *clk, u16 m, u8 n, u16 freqsel)
        v |= m << __ffs(dd->mult_mask);
        v |= (n - 1) << __ffs(dd->div1_mask);
 
-       /*
-        * XXX This code is not needed for 3430/AM35XX; can it be optimized
-        * out in non-multi-OMAP builds for those chips?
-        */
-       if ((dd->flags & DPLL_J_TYPE) && !(dd->flags & DPLL_NO_DCO_SEL)) {
-               u8 dco, sd_div;
-               lookup_dco_sddiv(clk, &dco, &sd_div, m, n);
-               /* XXX This probably will need revision for OMAP4 */
-               v &= ~(OMAP3630_PERIPH_DPLL_DCO_SEL_MASK
-                       | OMAP3630_PERIPH_DPLL_SD_DIV_MASK);
-               v |= dco << __ffs(OMAP3630_PERIPH_DPLL_DCO_SEL_MASK);
-               v |= sd_div << __ffs(OMAP3630_PERIPH_DPLL_SD_DIV_MASK);
+       /* Configure dco and sd_div for dplls that have these fields */
+       if (dd->dco_mask) {
+               _lookup_dco(clk, &dco, m, n);
+               v &= ~(dd->dco_mask);
+               v |= dco << __ffs(dd->dco_mask);
+       }
+       if (dd->sddiv_mask) {
+               _lookup_sddiv(clk, &sd_div, m, n);
+               v &= ~(dd->sddiv_mask);
+               v |= sd_div << __ffs(dd->sddiv_mask);
        }
 
        __raw_writel(v, dd->mult_div1_reg);