sh: add pll_clk to sh7785

This patch converts the sh7785 pll implementation from the
all-in-one code in frqmr_recalc() and frqmr_build_rate_table()
to a separate struct clk. This allows us to remove the processor
specific multiplier and use generic rate table functions.

Signed-off-by: Magnus Damm <damm@igel.co.jp>
Signed-off-by: Paul Mundt <lethal@linux-sh.org>

diff --git a/arch/sh/kernel/cpu/sh4a/clock-sh7785.c b/arch/sh/kernel/cpu/sh4a/clock-sh7785.c
index cf042b5..7021ab0 100644 (file)
--- a/arch/sh/kernel/cpu/sh4a/clock-sh7785.c
+++ b/arch/sh/kernel/cpu/sh4a/clock-sh7785.c
@@ -56,12 +56,7 @@ static unsigned long frqmr_recalc(struct clk *clk)
 
        idx = (__raw_readl(FRQMR1) >> data->shift) & 0x000f;
 
-       /*
-        * XXX: PLL1 multiplier is locked for the default clock mode,
-        * when mode pin detection and configuration support is added,
-        * select the multiplier dynamically.
-        */
-       return clk->parent->rate * 36 / div2[idx];
+       return clk->parent->rate / div2[idx];
 }
 
 static void frqmr_build_rate_table(struct clk *clk)
@@ -75,7 +70,7 @@ static void frqmr_build_rate_table(struct clk *clk)
 
                data->freq_table[entry].index = entry;
                data->freq_table[entry].frequency =
-                       clk->parent->rate * 36 / div2[i];
+                       clk->parent->rate / div2[i];
 
                entry++;
        }
@@ -136,6 +131,20 @@ static struct clk_ops frqmr_clk_ops = {
        .round_rate             = frqmr_round_rate,
 };
 
+static unsigned long pll_recalc(struct clk *clk)
+{
+       /*
+        * XXX: PLL1 multiplier is locked for the default clock mode,
+        * when mode pin detection and configuration support is added,
+        * select the multiplier dynamically.
+        */
+       return clk->parent->rate * 36;
+}
+
+static struct clk_ops pll_clk_ops = {
+       .recalc         = pll_recalc,
+};
+
 /*
  * Default rate for the root input clock, reset this with clk_set_rate()
  * from the platform code.
@@ -146,11 +155,19 @@ static struct clk extal_clk = {
        .rate           = 33333333,
 };
 
+static struct clk pll_clk = {
+       .name           = "pll_clk",
+       .id             = -1,
+       .ops            = &pll_clk_ops,
+       .parent         = &extal_clk,
+       .flags          = CLK_ENABLE_ON_INIT,
+};
+
 static struct clk cpu_clk = {
        .name           = "cpu_clk",            /* Ick */
        .id             = -1,
        .ops            = &frqmr_clk_ops,
-       .parent         = &extal_clk,
+       .parent         = &pll_clk,
        .flags          = CLK_ENABLE_ON_INIT,
        .priv           = &ifc_data,
 };
@@ -159,7 +176,7 @@ static struct clk shyway_clk = {
        .name           = "shyway_clk",         /* SHck */
        .id             = -1,
        .ops            = &frqmr_clk_ops,
-       .parent         = &extal_clk,
+       .parent         = &pll_clk,
        .flags          = CLK_ENABLE_ON_INIT,
        .priv           = &sfc_data,
 };
@@ -168,7 +185,7 @@ static struct clk peripheral_clk = {
        .name           = "peripheral_clk",     /* Pck */
        .id             = -1,
        .ops            = &frqmr_clk_ops,
-       .parent         = &extal_clk,
+       .parent         = &pll_clk,
        .flags          = CLK_ENABLE_ON_INIT,
        .priv           = &pfc_data,
 };
@@ -177,7 +194,7 @@ static struct clk ddr_clk = {
        .name           = "ddr_clk",            /* DDRck */
        .id             = -1,
        .ops            = &frqmr_clk_ops,
-       .parent         = &extal_clk,
+       .parent         = &pll_clk,
        .flags          = CLK_ENABLE_ON_INIT,
        .priv           = &mfc_data,
 };
@@ -186,7 +203,7 @@ static struct clk bus_clk = {
        .name           = "bus_clk",            /* Bck */
        .id             = -1,
        .ops            = &frqmr_clk_ops,
-       .parent         = &extal_clk,
+       .parent         = &pll_clk,
        .flags          = CLK_ENABLE_ON_INIT,
        .priv           = &bfc_data,
 };
@@ -195,7 +212,7 @@ static struct clk ga_clk = {
        .name           = "ga_clk",             /* GAck */
        .id             = -1,
        .ops            = &frqmr_clk_ops,
-       .parent         = &extal_clk,
+       .parent         = &pll_clk,
        .priv           = &s2fc_data,
 };
 
@@ -203,7 +220,7 @@ static struct clk du_clk = {
        .name           = "du_clk",             /* DUck */
        .id             = -1,
        .ops            = &frqmr_clk_ops,
-       .parent         = &extal_clk,
+       .parent         = &pll_clk,
        .priv           = &s3fc_data,
 };
 
@@ -211,13 +228,14 @@ static struct clk umem_clk = {
        .name           = "umem_clk",           /* uck */
        .id             = -1,
        .ops            = &frqmr_clk_ops,
-       .parent         = &extal_clk,
+       .parent         = &pll_clk,
        .flags          = CLK_ENABLE_ON_INIT,
        .priv           = &ufc_data,
 };
 
 static struct clk *clks[] = {
        &extal_clk,
+       &pll_clk,
        &cpu_clk,
        &shyway_clk,
        &peripheral_clk,