Merge tag 'clk-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/clk/linux

[cascardo/linux.git] / drivers / clk / at91 / clk-slow.c

diff --git a/drivers/clk/at91/clk-slow.c b/drivers/clk/at91/clk-slow.c
index 402b45d..61090b1 100644 (file)
--- a/drivers/clk/at91/clk-slow.c
+++ b/drivers/clk/at91/clk-slow.c
@@ -12,17 +12,11 @@
 
 #include <linux/clk-provider.h>
 #include <linux/clkdev.h>
-#include <linux/slab.h>
 #include <linux/clk/at91_pmc.h>
 #include <linux/delay.h>
 #include <linux/of.h>
-#include <linux/of_address.h>
-#include <linux/of_irq.h>
-#include <linux/io.h>
-#include <linux/interrupt.h>
-#include <linux/irq.h>
-#include <linux/sched.h>
-#include <linux/wait.h>
+#include <linux/mfd/syscon.h>
+#include <linux/regmap.h>
 
 #include "pmc.h"
 #include "sckc.h"
@@ -58,7 +52,7 @@ struct clk_slow_rc_osc {
 
 struct clk_sam9260_slow {
        struct clk_hw hw;
-       struct at91_pmc *pmc;
+       struct regmap *regmap;
 };
 
 #define to_clk_sam9260_slow(hw) container_of(hw, struct clk_sam9260_slow, hw)
@@ -388,8 +382,11 @@ void __init of_at91sam9x5_clk_slow_setup(struct device_node *np,
 static u8 clk_sam9260_slow_get_parent(struct clk_hw *hw)
 {
        struct clk_sam9260_slow *slowck = to_clk_sam9260_slow(hw);
+       unsigned int status;
 
-       return !!(pmc_read(slowck->pmc, AT91_PMC_SR) & AT91_PMC_OSCSEL);
+       regmap_read(slowck->regmap, AT91_PMC_SR, &status);
+
+       return status & AT91_PMC_OSCSEL ? 1 : 0;
 }
 
 static const struct clk_ops sam9260_slow_ops = {
@@ -397,7 +394,7 @@ static const struct clk_ops sam9260_slow_ops = {
 };
 
 static struct clk * __init
-at91_clk_register_sam9260_slow(struct at91_pmc *pmc,
+at91_clk_register_sam9260_slow(struct regmap *regmap,
                               const char *name,
                               const char **parent_names,
                               int num_parents)
@@ -406,7 +403,7 @@ at91_clk_register_sam9260_slow(struct at91_pmc *pmc,
        struct clk *clk = NULL;
        struct clk_init_data init;
 
-       if (!pmc || !name)
+       if (!name)
                return ERR_PTR(-EINVAL);
 
        if (!parent_names || !num_parents)
@@ -423,7 +420,7 @@ at91_clk_register_sam9260_slow(struct at91_pmc *pmc,
        init.flags = 0;
 
        slowck->hw.init = &init;
-       slowck->pmc = pmc;
+       slowck->regmap = regmap;
 
        clk = clk_register(NULL, &slowck->hw);
        if (IS_ERR(clk))
@@ -432,26 +429,32 @@ at91_clk_register_sam9260_slow(struct at91_pmc *pmc,
        return clk;
 }
 
-void __init of_at91sam9260_clk_slow_setup(struct device_node *np,
-                                         struct at91_pmc *pmc)
+static void __init of_at91sam9260_clk_slow_setup(struct device_node *np)
 {
        struct clk *clk;
        const char *parent_names[2];
        unsigned int num_parents;
        const char *name = np->name;
+       struct regmap *regmap;
 
        num_parents = of_clk_get_parent_count(np);
        if (num_parents != 2)
                return;
 
        of_clk_parent_fill(np, parent_names, num_parents);
+       regmap = syscon_node_to_regmap(of_get_parent(np));
+       if (IS_ERR(regmap))
+               return;
 
        of_property_read_string(np, "clock-output-names", &name);
 
-       clk = at91_clk_register_sam9260_slow(pmc, name, parent_names,
+       clk = at91_clk_register_sam9260_slow(regmap, name, parent_names,
                                             num_parents);
        if (IS_ERR(clk))
                return;
 
        of_clk_add_provider(np, of_clk_src_simple_get, clk);
 }
+
+CLK_OF_DECLARE(at91sam9260_clk_slow, "atmel,at91sam9260-clk-slow",
+              of_at91sam9260_clk_slow_setup);