ARM: OMAP4: clock: Convert to common clk

Convert all OMAP4 specific platform files to use COMMON clk
and keep all the changes under the CONFIG_COMMON_CLK macro check
so it does not break any existing code. At a later point switch
to COMMON clk and get rid of all old/legacy code.

This converts all apis which will be called directly from COMMON
clk to take a struct clk_hw parameter, and all the internal platform
apis to take a struct clk_hw_omap parameter.

Changes are based off the original patch from Mike Turquette.

Signed-off-by: Rajendra Nayak <rnayak@ti.com>
[paul@pwsan.com: created new omap2_clksel_find_parent_index() rather than
 modifying omap2_init_clksel_parent(); moved clkhwops_iclk_wait to
 clkt_iclk.c to fix OMAP4-only builds; added clk-provider.h include to clock.h
 to try to fix some 3430-builds]
[mturquette@ti.com: squash patch for omap2_clkops_{en,dis}able_clkdm;
 omap2_dflt_clk_is_enabled should not enable clocks]
Signed-off-by: Mike Turquette <mturquette@ti.com>
[paul@pwsan.com: fix compiler warning; update to apply; added kerneldoc on
 non-trivial new functions; added the dpll3xxx clockdomain modifications]
Signed-off-by: Paul Walmsley <paul@pwsan.com>

1 files changed, 38 insertions, 0 deletions

diff --git a/arch/arm/mach-omap2/dpll44xx.c b/arch/arm/mach-omap2/dpll44xx.c
index 5854da168a9c..aa75a3c10026 100644
--- a/arch/arm/mach-omap2/dpll44xx.c
+++ b/arch/arm/mach-omap2/dpll44xx.c
@@ -21,7 +21,11 @@
 #include "cm-regbits-44xx.h"
 
 /* Supported only on OMAP4 */
+#ifdef CONFIG_COMMON_CLK
+int omap4_dpllmx_gatectrl_read(struct clk_hw_omap *clk)
+#else
 int omap4_dpllmx_gatectrl_read(struct clk *clk)
+#endif
 {
         u32 v;
         u32 mask;
@@ -40,7 +44,11 @@ int omap4_dpllmx_gatectrl_read(struct clk *clk)
         return v;
 }
 
+#ifdef CONFIG_COMMON_CLK
+void omap4_dpllmx_allow_gatectrl(struct clk_hw_omap *clk)
+#else
 void omap4_dpllmx_allow_gatectrl(struct clk *clk)
+#endif
 {
         u32 v;
         u32 mask;
@@ -58,7 +66,11 @@ void omap4_dpllmx_allow_gatectrl(struct clk *clk)
         __raw_writel(v, clk->clksel_reg);
 }
 
+#ifdef CONFIG_COMMON_CLK
+void omap4_dpllmx_deny_gatectrl(struct clk_hw_omap *clk)
+#else
 void omap4_dpllmx_deny_gatectrl(struct clk *clk)
+#endif
 {
         u32 v;
         u32 mask;
@@ -76,10 +88,17 @@ void omap4_dpllmx_deny_gatectrl(struct clk *clk)
         __raw_writel(v, clk->clksel_reg);
 }
 
+#ifdef CONFIG_COMMON_CLK
+const struct clk_hw_omap_ops clkhwops_omap4_dpllmx = {
+        .allow_idle     = omap4_dpllmx_allow_gatectrl,
+        .deny_idle      = omap4_dpllmx_deny_gatectrl,
+};
+#else
 const struct clkops clkops_omap4_dpllmx_ops = {
         .allow_idle     = omap4_dpllmx_allow_gatectrl,
         .deny_idle      = omap4_dpllmx_deny_gatectrl,
 };
+#endif
 
 /**
  * omap4_dpll_regm4xen_recalc - compute DPLL rate, considering REGM4XEN bit
@@ -90,8 +109,15 @@ const struct clkops clkops_omap4_dpllmx_ops = {
  * OMAP4 ABE DPLL.  Returns the DPLL's output rate (before M-dividers)
  * upon success, or 0 upon error.
  */
+#ifdef CONFIG_COMMON_CLK
+unsigned long omap4_dpll_regm4xen_recalc(struct clk_hw *hw,
+                        unsigned long parent_rate)
+{
+        struct clk_hw_omap *clk = to_clk_hw_omap(hw);
+#else
 unsigned long omap4_dpll_regm4xen_recalc(struct clk *clk)
 {
+#endif
         u32 v;
         unsigned long rate;
         struct dpll_data *dd;
@@ -123,8 +149,16 @@ unsigned long omap4_dpll_regm4xen_recalc(struct clk *clk)
  * M-dividers) upon success, -EINVAL if @clk is null or not a DPLL, or
  * ~0 if an error occurred in omap2_dpll_round_rate().
  */
+#ifdef CONFIG_COMMON_CLK
+long omap4_dpll_regm4xen_round_rate(struct clk_hw *hw,
+                                    unsigned long target_rate,
+                                    unsigned long *parent_rate)
+{
+        struct clk_hw_omap *clk = to_clk_hw_omap(hw);
+#else
 long omap4_dpll_regm4xen_round_rate(struct clk *clk, unsigned long target_rate)
 {
+#endif
         u32 v;
         struct dpll_data *dd;
         long r;
@@ -140,7 +174,11 @@ long omap4_dpll_regm4xen_round_rate(struct clk *clk, unsigned long target_rate)
         if (v)
                 target_rate = target_rate / OMAP4430_REGM4XEN_MULT;
 
+#ifdef CONFIG_COMMON_CLK
+        r = omap2_dpll_round_rate(hw, target_rate, NULL);
+#else
         r = omap2_dpll_round_rate(clk, target_rate);
+#endif
         if (r == ~0)
                 return r;