Merge branch 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/viro/vfs-2.6

[cascardo/linux.git] / drivers / sh / clk-cpg.c

diff --git a/drivers/sh/clk-cpg.c b/drivers/sh/clk-cpg.c
index f5c80ba..8c024b9 100644 (file)
--- a/drivers/sh/clk-cpg.c
+++ b/drivers/sh/clk-cpg.c
@@ -68,6 +68,39 @@ static unsigned long sh_clk_div6_recalc(struct clk *clk)
        return clk->freq_table[idx].frequency;
 }
 
+static int sh_clk_div6_set_parent(struct clk *clk, struct clk *parent)
+{
+       struct clk_div_mult_table *table = &sh_clk_div6_table;
+       u32 value;
+       int ret, i;
+
+       if (!clk->parent_table || !clk->parent_num)
+               return -EINVAL;
+
+       /* Search the parent */
+       for (i = 0; i < clk->parent_num; i++)
+               if (clk->parent_table[i] == parent)
+                       break;
+
+       if (i == clk->parent_num)
+               return -ENODEV;
+
+       ret = clk_reparent(clk, parent);
+       if (ret < 0)
+               return ret;
+
+       value = __raw_readl(clk->enable_reg) &
+               ~(((1 << clk->src_width) - 1) << clk->src_shift);
+
+       __raw_writel(value | (i << clk->src_shift), clk->enable_reg);
+
+       /* Rebuild the frequency table */
+       clk_rate_table_build(clk, clk->freq_table, table->nr_divisors,
+                            table, &clk->arch_flags);
+
+       return 0;
+}
+
 static int sh_clk_div6_set_rate(struct clk *clk,
                                unsigned long rate, int algo_id)
 {
@@ -117,7 +150,17 @@ static struct clk_ops sh_clk_div6_clk_ops = {
        .disable        = sh_clk_div6_disable,
 };
 
-int __init sh_clk_div6_register(struct clk *clks, int nr)
+static struct clk_ops sh_clk_div6_reparent_clk_ops = {
+       .recalc         = sh_clk_div6_recalc,
+       .round_rate     = sh_clk_div_round_rate,
+       .set_rate       = sh_clk_div6_set_rate,
+       .enable         = sh_clk_div6_enable,
+       .disable        = sh_clk_div6_disable,
+       .set_parent     = sh_clk_div6_set_parent,
+};
+
+static int __init sh_clk_div6_register_ops(struct clk *clks, int nr,
+                                          struct clk_ops *ops)
 {
        struct clk *clkp;
        void *freq_table;
@@ -136,7 +179,7 @@ int __init sh_clk_div6_register(struct clk *clks, int nr)
        for (k = 0; !ret && (k < nr); k++) {
                clkp = clks + k;
 
-               clkp->ops = &sh_clk_div6_clk_ops;
+               clkp->ops = ops;
                clkp->id = -1;
                clkp->freq_table = freq_table + (k * freq_table_size);
                clkp->freq_table[nr_divs].frequency = CPUFREQ_TABLE_END;
@@ -147,6 +190,17 @@ int __init sh_clk_div6_register(struct clk *clks, int nr)
        return ret;
 }
 
+int __init sh_clk_div6_register(struct clk *clks, int nr)
+{
+       return sh_clk_div6_register_ops(clks, nr, &sh_clk_div6_clk_ops);
+}
+
+int __init sh_clk_div6_reparent_register(struct clk *clks, int nr)
+{
+       return sh_clk_div6_register_ops(clks, nr,
+                                       &sh_clk_div6_reparent_clk_ops);
+}
+
 static unsigned long sh_clk_div4_recalc(struct clk *clk)
 {
        struct clk_div4_table *d4t = clk->priv;