These changes are the raw update to linux-4.4.6-rt14. Kernel sources

[kvmfornfv.git] / kernel / drivers / clk / at91 / clk-h32mx.c

diff --git a/kernel/drivers/clk/at91/clk-h32mx.c b/kernel/drivers/clk/at91/clk-h32mx.c
index 152dcb3..819f584 100644 (file)
--- a/kernel/drivers/clk/at91/clk-h32mx.c
+++ b/kernel/drivers/clk/at91/clk-h32mx.c
@@ -15,15 +15,9 @@
 #include <linux/clk-provider.h>
 #include <linux/clkdev.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/regmap.h>
+#include <linux/mfd/syscon.h>
 
 #include "pmc.h"
 
@@ -31,7 +25,7 @@
 
 struct clk_sama5d4_h32mx {
        struct clk_hw hw;
-       struct at91_pmc *pmc;
+       struct regmap *regmap;
 };
 
 #define to_clk_sama5d4_h32mx(hw) container_of(hw, struct clk_sama5d4_h32mx, hw)
@@ -40,8 +34,10 @@ static unsigned long clk_sama5d4_h32mx_recalc_rate(struct clk_hw *hw,
                                                 unsigned long parent_rate)
 {
        struct clk_sama5d4_h32mx *h32mxclk = to_clk_sama5d4_h32mx(hw);
+       unsigned int mckr;
 
-       if (pmc_read(h32mxclk->pmc, AT91_PMC_MCKR) & AT91_PMC_H32MXDIV)
+       regmap_read(h32mxclk->regmap, AT91_PMC_MCKR, &mckr);
+       if (mckr & AT91_PMC_H32MXDIV)
                return parent_rate / 2;
 
        if (parent_rate > H32MX_MAX_FREQ)
@@ -70,18 +66,16 @@ static int clk_sama5d4_h32mx_set_rate(struct clk_hw *hw, unsigned long rate,
                                    unsigned long parent_rate)
 {
        struct clk_sama5d4_h32mx *h32mxclk = to_clk_sama5d4_h32mx(hw);
-       struct at91_pmc *pmc = h32mxclk->pmc;
-       u32 tmp;
+       u32 mckr = 0;
 
        if (parent_rate != rate && (parent_rate / 2) != rate)
                return -EINVAL;
 
-       pmc_lock(pmc);
-       tmp = pmc_read(pmc, AT91_PMC_MCKR) & ~AT91_PMC_H32MXDIV;
        if ((parent_rate / 2) == rate)
-               tmp |= AT91_PMC_H32MXDIV;
-       pmc_write(pmc, AT91_PMC_MCKR, tmp);
-       pmc_unlock(pmc);
+               mckr = AT91_PMC_H32MXDIV;
+
+       regmap_update_bits(h32mxclk->regmap, AT91_PMC_MCKR,
+                          AT91_PMC_H32MXDIV, mckr);
 
        return 0;
 }
@@ -92,14 +86,18 @@ static const struct clk_ops h32mx_ops = {
        .set_rate = clk_sama5d4_h32mx_set_rate,
 };
 
-void __init of_sama5d4_clk_h32mx_setup(struct device_node *np,
-                                    struct at91_pmc *pmc)
+static void __init of_sama5d4_clk_h32mx_setup(struct device_node *np)
 {
        struct clk_sama5d4_h32mx *h32mxclk;
        struct clk_init_data init;
        const char *parent_name;
+       struct regmap *regmap;
        struct clk *clk;
 
+       regmap = syscon_node_to_regmap(of_get_parent(np));
+       if (IS_ERR(regmap))
+               return;
+
        h32mxclk = kzalloc(sizeof(*h32mxclk), GFP_KERNEL);
        if (!h32mxclk)
                return;
@@ -113,11 +111,15 @@ void __init of_sama5d4_clk_h32mx_setup(struct device_node *np,
        init.flags = CLK_SET_RATE_GATE;
 
        h32mxclk->hw.init = &init;
-       h32mxclk->pmc = pmc;
+       h32mxclk->regmap = regmap;
 
        clk = clk_register(NULL, &h32mxclk->hw);
-       if (!clk)
+       if (!clk) {
+               kfree(h32mxclk);
                return;
+       }
 
        of_clk_add_provider(np, of_clk_src_simple_get, clk);
 }
+CLK_OF_DECLARE(of_sama5d4_clk_h32mx_setup, "atmel,sama5d4-clk-h32mx",
+              of_sama5d4_clk_h32mx_setup);