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>

5 files changed, 43 insertions, 43 deletions

diff --git a/arch/arm/boot/dts/imx6q.dtsi b/arch/arm/boot/dts/imx6q.dtsi
index bea21bc1aadd..52ed4d1ff4ed 100644
--- a/arch/arm/boot/dts/imx6q.dtsi
+++ b/arch/arm/boot/dts/imx6q.dtsi
@@ -378,8 +378,8 @@
                                 interrupts = <0 87 0x04 0 88 0x04>;
                         };
 
-                        anatop@020c8000 {
-                                compatible = "fsl,imx6q-anatop";
+                        anatop: anatop@020c8000 {
+                                compatible = "fsl,imx6q-anatop", "syscon", "simple-bus";
                                 reg = <0x020c8000 0x1000>;
                                 interrupts = <0 49 0x04 0 54 0x04 0 127 0x04>;
 
diff --git a/arch/arm/mach-imx/Kconfig b/arch/arm/mach-imx/Kconfig
index afd542ad6f97..7bba253fd2bb 100644
--- a/arch/arm/mach-imx/Kconfig
+++ b/arch/arm/mach-imx/Kconfig
@@ -839,7 +839,7 @@ config SOC_IMX6Q
         select HAVE_IMX_MMDC
         select HAVE_IMX_SRC
         select HAVE_SMP
-        select MFD_ANATOP
+        select MFD_SYSCON
         select PINCTRL
         select PINCTRL_IMX6Q
 
diff --git a/arch/arm/mach-imx/mach-imx6q.c b/arch/arm/mach-imx/mach-imx6q.c
index 5ec0608f2a76..8d7c14140744 100644
--- a/arch/arm/mach-imx/mach-imx6q.c
+++ b/arch/arm/mach-imx/mach-imx6q.c
@@ -24,8 +24,9 @@
 #include <linux/of_platform.h>
 #include <linux/pinctrl/machine.h>
 #include <linux/phy.h>
+#include <linux/regmap.h>
 #include <linux/micrel_phy.h>
-#include <linux/mfd/anatop.h>
+#include <linux/mfd/syscon.h>
 #include <asm/cpuidle.h>
 #include <asm/smp_twd.h>
 #include <asm/hardware/cache-l2x0.h>
@@ -120,20 +121,7 @@ static void __init imx6q_sabrelite_init(void)
 
 static void __init imx6q_usb_init(void)
 {
-        struct device_node *np;
-        struct platform_device *pdev = NULL;
-        struct anatop *adata = NULL;
-
-        np = of_find_compatible_node(NULL, NULL, "fsl,imx6q-anatop");
-        if (np)
-                pdev = of_find_device_by_node(np);
-        if (pdev)
-                adata = platform_get_drvdata(pdev);
-        if (!adata) {
-                if (np)
-                        of_node_put(np);
-                return;
-        }
+        struct regmap *anatop;
 
 #define HW_ANADIG_USB1_CHRG_DETECT              0x000001b0
 #define HW_ANADIG_USB2_CHRG_DETECT              0x00000210
@@ -141,20 +129,21 @@ static void __init imx6q_usb_init(void)
 #define BM_ANADIG_USB_CHRG_DETECT_EN_B          0x00100000
 #define BM_ANADIG_USB_CHRG_DETECT_CHK_CHRG_B    0x00080000
 
-        /*
-         * The external charger detector needs to be disabled,
-         * or the signal at DP will be poor
-         */
-        anatop_write_reg(adata, HW_ANADIG_USB1_CHRG_DETECT,
-                        BM_ANADIG_USB_CHRG_DETECT_EN_B
-                        | BM_ANADIG_USB_CHRG_DETECT_CHK_CHRG_B,
-                        ~0);
-        anatop_write_reg(adata, HW_ANADIG_USB2_CHRG_DETECT,
-                        BM_ANADIG_USB_CHRG_DETECT_EN_B |
-                        BM_ANADIG_USB_CHRG_DETECT_CHK_CHRG_B,
-                        ~0);
-
-        of_node_put(np);
+        anatop = syscon_regmap_lookup_by_compatible("fsl,imx6q-anatop");
+        if (!IS_ERR(anatop)) {
+                /*
+                 * The external charger detector needs to be disabled,
+                 * or the signal at DP will be poor
+                 */
+                regmap_write(anatop, HW_ANADIG_USB1_CHRG_DETECT,
+                                BM_ANADIG_USB_CHRG_DETECT_EN_B
+                                | BM_ANADIG_USB_CHRG_DETECT_CHK_CHRG_B);
+                regmap_write(anatop, HW_ANADIG_USB2_CHRG_DETECT,
+                                BM_ANADIG_USB_CHRG_DETECT_EN_B |
+                                BM_ANADIG_USB_CHRG_DETECT_CHK_CHRG_B);
+        } else {
+                pr_warn("failed to find fsl,imx6q-anatop regmap\n");
+        }
 }
 
 static void __init imx6q_init_machine(void)
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) {