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Subject[PATCH 4/7] regulator: anatop-regulator: convert to use imx-syscon to access anatop register
Date
From: Dong Aisheng <dong.aisheng@linaro.org>

Using standard imx syscon API to access anatop register.

Signed-off-by: Dong Aisheng <dong.aisheng@linaro.org>
---
arch/arm/boot/dts/imx6q.dtsi | 6 ++++++
drivers/regulator/Kconfig | 2 +-
drivers/regulator/anatop-regulator.c | 17 +++++++++++------
3 files changed, 18 insertions(+), 7 deletions(-)
diff --git a/arch/arm/boot/dts/imx6q.dtsi b/arch/arm/boot/dts/imx6q.dtsi
index 7732b70..7076be0 100644
--- a/arch/arm/boot/dts/imx6q.dtsi
+++ b/arch/arm/boot/dts/imx6q.dtsi
@@ -395,6 +395,7 @@
anatop-min-bit-val = <4>;
anatop-min-voltage = <800000>;
anatop-max-voltage = <1375000>;
+ fsl,anatop = <&anatop>;
};

regulator-3p0@120 {
@@ -409,6 +410,7 @@
anatop-min-bit-val = <0>;
anatop-min-voltage = <2625000>;
anatop-max-voltage = <3400000>;
+ fsl,anatop = <&anatop>;
};

regulator-2p5@130 {
@@ -423,6 +425,7 @@
anatop-min-bit-val = <0>;
anatop-min-voltage = <2000000>;
anatop-max-voltage = <2750000>;
+ fsl,anatop = <&anatop>;
};

regulator-vddcore@140 {
@@ -437,6 +440,7 @@
anatop-min-bit-val = <1>;
anatop-min-voltage = <725000>;
anatop-max-voltage = <1450000>;
+ fsl,anatop = <&anatop>;
};

regulator-vddpu@140 {
@@ -451,6 +455,7 @@
anatop-min-bit-val = <1>;
anatop-min-voltage = <725000>;
anatop-max-voltage = <1450000>;
+ fsl,anatop = <&anatop>;
};

regulator-vddsoc@140 {
@@ -465,6 +470,7 @@
anatop-min-bit-val = <1>;
anatop-min-voltage = <725000>;
anatop-max-voltage = <1450000>;
+ fsl,anatop = <&anatop>;
};
};

diff --git a/drivers/regulator/Kconfig b/drivers/regulator/Kconfig
index 4e932cc..7ceea1a 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_IMX_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 ce0fe72..e0b9ef1 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/imx-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 device_node *anatop;
int vol_bit_shift;
int vol_bit_width;
int min_bit_val;
@@ -56,7 +57,8 @@ 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);
+ imx_syscon_update_bits(anatop_reg->anatop, anatop_reg->control_reg,
+ mask, val);

return 0;
}
@@ -69,7 +71,7 @@ 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);
+ imx_syscon_read(anatop_reg->anatop, anatop_reg->control_reg, &val);
mask = ((1 << anatop_reg->vol_bit_width) - 1) <<
anatop_reg->vol_bit_shift;
val = (val & mask) >> anatop_reg->vol_bit_shift;
@@ -92,7 +94,6 @@ static int __devinit anatop_regulator_probe(struct platform_device *pdev)
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;

@@ -109,7 +110,11 @@ 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;
+
+ sreg->anatop = of_parse_phandle(np, "fsl,anatop", 0);
+ if (!sreg->anatop)
+ return -ENODEV;
+
ret = of_property_read_u32(np, "anatop-reg-offset",
&sreg->control_reg);
if (ret) {
--
1.7.0.4



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