regulator: anatop-regulator: Convert to use syscon to access anatop register

Using syscon to access anatop register.

Acked-by: Mark Brown <broonie@opensource.wolfsonmicro.com>
Acked-by: Stephen Warren <swarren@wwwdotorg.org>
Signed-off-by: Dong Aisheng <dong.aisheng@linaro.org>
Signed-off-by: Samuel Ortiz <sameo@linux.intel.com>

2 files changed, 22 insertions, 11 deletions

diff --git a/drivers/regulator/Kconfig b/drivers/regulator/Kconfig
index 4e932cc695e9..2ae1d97fac1e 100644
--- a/drivers/regulator/Kconfig
+++ b/drivers/regulator/Kconfig
@@ -112,7 +112,7 @@ config REGULATOR_DA9052
 
 config REGULATOR_ANATOP
         tristate "Freescale i.MX on-chip ANATOP LDO regulators"
-        depends on MFD_ANATOP
+        depends on MFD_SYSCON
         help
           Say y here to support Freescale i.MX on-chip ANATOP LDOs
           regulators. It is recommended that this option be
diff --git a/drivers/regulator/anatop-regulator.c b/drivers/regulator/anatop-regulator.c
index e9c2085f9dfb..596535dd917a 100644
--- a/drivers/regulator/anatop-regulator.c
+++ b/drivers/regulator/anatop-regulator.c
@@ -21,19 +21,20 @@
 #include <linux/slab.h>
 #include <linux/device.h>
 #include <linux/module.h>
+#include <linux/mfd/syscon.h>
 #include <linux/err.h>
 #include <linux/io.h>
 #include <linux/platform_device.h>
 #include <linux/of.h>
 #include <linux/of_address.h>
-#include <linux/mfd/anatop.h>
+#include <linux/regmap.h>
 #include <linux/regulator/driver.h>
 #include <linux/regulator/of_regulator.h>
 
 struct anatop_regulator {
         const char *name;
         u32 control_reg;
-        struct anatop *mfd;
+        struct regmap *anatop;
         int vol_bit_shift;
         int vol_bit_width;
         int min_bit_val;
@@ -43,7 +44,8 @@ struct anatop_regulator {
         struct regulator_init_data *initdata;
 };
 
-static int anatop_set_voltage_sel(struct regulator_dev *reg, unsigned selector)
+static int anatop_regmap_set_voltage_sel(struct regulator_dev *reg,
+                                        unsigned selector)
 {
         struct anatop_regulator *anatop_reg = rdev_get_drvdata(reg);
         u32 val, mask;
@@ -56,12 +58,13 @@ static int anatop_set_voltage_sel(struct regulator_dev *reg, unsigned selector)
         mask = ((1 << anatop_reg->vol_bit_width) - 1) <<
                 anatop_reg->vol_bit_shift;
         val <<= anatop_reg->vol_bit_shift;
-        anatop_write_reg(anatop_reg->mfd, anatop_reg->control_reg, val, mask);
+        regmap_update_bits(anatop_reg->anatop, anatop_reg->control_reg,
+                                mask, val);
 
         return 0;
 }
 
-static int anatop_get_voltage_sel(struct regulator_dev *reg)
+static int anatop_regmap_get_voltage_sel(struct regulator_dev *reg)
 {
         struct anatop_regulator *anatop_reg = rdev_get_drvdata(reg);
         u32 val;
@@ -69,7 +72,7 @@ static int anatop_get_voltage_sel(struct regulator_dev *reg)
         if (!anatop_reg->control_reg)
                 return -ENOTSUPP;
 
-        val = anatop_read_reg(anatop_reg->mfd, anatop_reg->control_reg);
+        regmap_read(anatop_reg->anatop, anatop_reg->control_reg, &val);
         val = (val & ((1 << anatop_reg->vol_bit_width) - 1)) >>
                 anatop_reg->vol_bit_shift;
 
@@ -77,8 +80,8 @@ static int anatop_get_voltage_sel(struct regulator_dev *reg)
 }
 
 static struct regulator_ops anatop_rops = {
-        .set_voltage_sel = anatop_set_voltage_sel,
-        .get_voltage_sel = anatop_get_voltage_sel,
+        .set_voltage_sel = anatop_regmap_set_voltage_sel,
+        .get_voltage_sel = anatop_regmap_get_voltage_sel,
         .list_voltage = regulator_list_voltage_linear,
         .map_voltage = regulator_map_voltage_linear,
 };
@@ -87,11 +90,11 @@ static int __devinit anatop_regulator_probe(struct platform_device *pdev)
 {
         struct device *dev = &pdev->dev;
         struct device_node *np = dev->of_node;
+        struct device_node *anatop_np;
         struct regulator_desc *rdesc;
         struct regulator_dev *rdev;
         struct anatop_regulator *sreg;
         struct regulator_init_data *initdata;
-        struct anatop *anatopmfd = dev_get_drvdata(pdev->dev.parent);
         struct regulator_config config = { };
         int ret = 0;
 
@@ -108,7 +111,15 @@ static int __devinit anatop_regulator_probe(struct platform_device *pdev)
         rdesc->ops = &anatop_rops;
         rdesc->type = REGULATOR_VOLTAGE;
         rdesc->owner = THIS_MODULE;
-        sreg->mfd = anatopmfd;
+
+        anatop_np = of_get_parent(np);
+        if (!anatop_np)
+                return -ENODEV;
+        sreg->anatop = syscon_node_to_regmap(anatop_np);
+        of_node_put(anatop_np);
+        if (IS_ERR(sreg->anatop))
+                return PTR_ERR(sreg->anatop);
+
         ret = of_property_read_u32(np, "anatop-reg-offset",
                                    &sreg->control_reg);
         if (ret) {