--- /dev/null
+Maxim MAX77693 multi-function device
+
+MAX77693 is a Multifunction device with the following submodules:
+- PMIC,
+- CHARGER,
+- LED,
+- MUIC,
+- HAPTIC
+
+It is interfaced to host controller using i2c.
+This document describes the bindings for the mfd device.
+
+Required properties:
+- compatible : Must be "maxim,max77693".
+- reg : Specifies the i2c slave address of PMIC block.
+- interrupts : This i2c device has an IRQ line connected to the main SoC.
+- interrupt-parent : The parent interrupt controller.
+
+Optional properties:
+- regulators : The regulators of max77693 have to be instantiated under subnod
+ named "regulators" using the following format.
+
+ regulators {
+ regualtor-compatible = ESAFEOUT1/ESAFEOUT2/CHARGER
+ standard regulator constratints[*].
+ };
+
+ [*] refer Documentation/devicetree/bindings/regulator/regulator.txt
+
+Example:
+ max77693@66 {
+ compatible = "maxim,max77693";
+ reg = <0x66>;
+ interrupt-parent = <&gpx1>;
+ interrupts = <5 2>;
+
+ regulators {
+ esafeout@1 {
+ regulator-compatible = "ESAFEOUT1";
+ regulator-name = "ESAFEOUT1";
+ regulator-boot-on;
+ };
+ esafeout@2 {
+ regulator-compatible = "ESAFEOUT2";
+ regulator-name = "ESAFEOUT2";
+ };
+ charger@0 {
+ regulator-compatible = "CHARGER";
+ regulator-name = "CHARGER";
+ regulator-min-microamp = <60000>;
+ regulator-max-microamp = <2580000>;
+ regulator-boot-on;
+ };
+ };
+ };
--- /dev/null
+Binding for TI/National Semiconductor LP872x Driver
+
+Required properties:
+ - compatible: "ti,lp8720" or "ti,lp8725"
+ - reg: I2C slave address. 0x7d = LP8720, 0x7a = LP8725
+
+Optional properties:
+ - ti,general-config: the value of LP872X_GENERAL_CFG register (u8)
+ (LP8720)
+ bit[2]: BUCK output voltage control by external DVS pin or register
+ 1 = external pin, 0 = bit7 of register 08h
+ bit[1]: sleep control by external DVS pin or register
+ 1 = external pin, 0 = bit6 of register 08h
+ bit[0]: time step unit(usec). 1 = 25, 0 = 50
+
+ (LP8725)
+ bit[7:6]: time step unit(usec). 00 = 32, 01 = 64, 10 = 128, 11 = 256
+ bit[4]: BUCK2 enable control. 1 = enable, 0 = disable
+ bit[3]: BUCK2 output voltage register address. 1 = 0Ah, 0 = 0Bh
+ bit[2]: BUCK1 output voltage control by external DVS pin or register
+ 1 = register 08h, 0 = DVS
+ bit[1]: LDO sleep control. 1 = sleep mode, 0 = normal
+ bit[0]: BUCK1 enable control, 1 = enable, 0 = disable
+
+ For more details, please see the datasheet.
+
+ - ti,update-config: define it when LP872X_GENERAL_CFG register should be set
+ - ti,dvs-gpio: GPIO specifier for external DVS pin control of LP872x devices.
+ - ti,dvs-vsel: DVS selector. 0 = SEL_V1, 1 = SEL_V2.
+ - ti,dvs-state: initial DVS pin state. 0 = DVS_LOW, 1 = DVS_HIGH.
+
+ Sub nodes for regulator_init_data
+ LP8720 has maximum 6 nodes. (child name: ldo1 ~ 5 and buck)
+ LP8725 has maximum 9 nodes. (child name: ldo1 ~ 5, lilo1,2 and buck1,2)
+ For more details, please see the following binding document.
+ (Documentation/devicetree/bindings/regulator/regulator.txt)
+
+Datasheet
+ - LP8720: http://www.ti.com/lit/ds/symlink/lp8720.pdf
+ - LP8725: http://www.ti.com/lit/ds/symlink/lp8725.pdf
+
+Example 1) LP8720
+
+lp8720@7d {
+ compatible = "ti,lp8720";
+ reg = <0x7d>;
+
+ /* external DVS pin used, timestep is 25usec */
+ ti,general-config = /bits/ 8 <0x03>;
+ ti,update-config;
+
+ /*
+ * The dvs-gpio depends on the processor environment.
+ * For example, following GPIO specifier means GPIO134 in OMAP4.
+ */
+ ti,dvs-gpio = <&gpio5 6 0>;
+ ti,dvs-vsel = /bits/ 8 <1>; /* SEL_V2 */
+ ti,dvs-state = /bits/ 8 <1>; /* DVS_HIGH */
+
+ vaf: ldo1 {
+ regulator-min-microvolt = <1200000>;
+ regulator-max-microvolt = <3300000>;
+ };
+
+ vmmc: ldo2 {
+ regulator-min-microvolt = <1200000>;
+ regulator-max-microvolt = <3300000>;
+ };
+
+ vcam_io: ldo3 {
+ regulator-min-microvolt = <1200000>;
+ regulator-max-microvolt = <3300000>;
+ regulator-boot-on;
+ };
+
+ vcam_core: ldo4 {
+ regulator-min-microvolt = <800000>;
+ regulator-max-microvolt = <2850000>;
+ regulator-boot-on;
+ };
+
+ vcam: ldo5 {
+ regulator-min-microvolt = <1200000>;
+ regulator-max-microvolt = <3300000>;
+ };
+
+ vcc: buck {
+ regulator-name = "VBUCK";
+ regulator-min-microvolt = <800000>;
+ regulator-max-microvolt = <2300000>;
+ };
+};
+
+Example 2) LP8725
+
+lp8725@7a {
+ compatible = "ti,lp8725";
+ reg = <0x7a>;
+
+ /* Enable BUCK1,2, no DVS, normal LDO mode, timestep is 256usec */
+ ti,general-config = /bits/ 8 <0xdd>;
+ ti,update-config;
+
+ vcam_io: ldo1 {
+ regulator-min-microvolt = <1200000>;
+ regulator-max-microvolt = <3300000>;
+ };
+
+ vcam_core: ldo2 {
+ regulator-min-microvolt = <1200000>;
+ regulator-max-microvolt = <3300000>;
+ };
+
+ vcam: ldo3 {
+ regulator-min-microvolt = <1200000>;
+ regulator-max-microvolt = <3300000>;
+ };
+
+ vcmmb_io: ldo4 {
+ regulator-min-microvolt = <1200000>;
+ regulator-max-microvolt = <3300000>;
+ regulator-boot-on;
+ };
+
+ vcmmb_core: ldo5 {
+ regulator-min-microvolt = <1200000>;
+ regulator-max-microvolt = <3300000>;
+ regulator-boot-on;
+ };
+
+ vaux1: lilo1 {
+ regulator-name = "VAUX1";
+ regulator-min-microvolt = <800000>;
+ regulator-max-microvolt = <3300000>;
+ };
+
+ vaux2: lilo2 {
+ regulator-name = "VAUX2";
+ regulator-min-microvolt = <800000>;
+ regulator-max-microvolt = <3300000>;
+ };
+
+ vcc1: buck1 {
+ regulator-name = "VBUCK1";
+ regulator-min-microvolt = <800000>;
+ regulator-max-microvolt = <3000000>;
+ regulator-min-microamp = <460000>;
+ regulator-max-microamp = <1370000>;
+ regulator-boot-on;
+ };
+
+ vcc2: buck2 {
+ regulator-name = "VBUCK2";
+ regulator-min-microvolt = <800000>;
+ regulator-max-microvolt = <3000000>;
+ regulator-min-microamp = <460000>;
+ regulator-max-microamp = <1370000>;
+ regulator-boot-on;
+ };
+};
--- /dev/null
+* Maxim MAX8973 Voltage Regulator
+
+Required properties:
+
+- compatible: must be "maxim,max8973"
+- reg: the i2c slave address of the regulator. It should be 0x1b.
+
+Any standard regulator properties can be used to configure the single max8973
+DCDC.
+
+Example:
+
+ max8973@1b {
+ compatible = "maxim,max8973";
+ reg = <0x1b>;
+
+ regulator-min-microvolt = <935000>;
+ regulator-max-microvolt = <1200000>;
+ regulator-boot-on;
+ regulator-always-on;
+ };
- regulator-max-microamp: largest current consumers may set
- regulator-always-on: boolean, regulator should never be disabled
- regulator-boot-on: bootloader/firmware enabled regulator
+- regulator-allow-bypass: allow the regulator to go into bypass mode
- <name>-supply: phandle to the parent supply/regulator node
- regulator-ramp-delay: ramp delay for regulator(in uV/uS)
--- /dev/null
+Adaptive Body Bias(ABB) SoC internal LDO regulator for Texas Instruments SoCs
+
+Required Properties:
+- compatible: Should be one of:
+ - "ti,abb-v1" for older SoCs like OMAP3
+ - "ti,abb-v2" for newer SoCs like OMAP4, OMAP5
+- reg: Address and length of the register set for the device. It contains
+ the information of registers in the same order as described by reg-names
+- reg-names: Should contain the reg names
+ - "base-address" - contains base address of ABB module
+ - "int-address" - contains address of interrupt register for ABB module
+ (also see Optional properties)
+- #address-cell: should be 0
+- #size-cell: should be 0
+- clocks: should point to the clock node used by ABB module
+- ti,settling-time: Settling time in uSecs from SoC documentation for ABB module
+ to settle down(target time for SR2_WTCNT_VALUE).
+- ti,clock-cycles: SoC specific data about count of system ti,clock-cycles used for
+ computing settling time from SoC Documentation for ABB module(clock
+ cycles for SR2_WTCNT_VALUE).
+- ti,tranxdone-status-mask: Mask to the int-register to write-to-clear mask
+ indicating LDO tranxdone (operation complete).
+- ti,abb_info: An array of 6-tuples u32 items providing information about ABB
+ configuration needed per operational voltage of the device.
+ Each item consists of the following in the same order:
+ volt: voltage in uV - Only used to index ABB information.
+ ABB mode: one of the following:
+ 0-bypass
+ 1-Forward Body Bias(FBB)
+ 3-Reverse Body Bias(RBB)
+ efuse: (see Optional properties)
+ RBB enable efuse Mask: (See Optional properties)
+ FBB enable efuse Mask: (See Optional properties)
+ Vset value efuse Mask: (See Optional properties)
+
+ NOTE: If more than 1 entry is present, then regulator is setup to change
+ voltage, allowing for various modes to be selected indexed off
+ the regulator. Further, ABB LDOs are considered always-on by
+ default.
+
+Optional Properties:
+- reg-names: In addition to the required properties, the following are optional
+ - "efuse-address" - Contains efuse base address used to pick up ABB info.
+ - "ldo-address" - Contains address of ABB LDO overide register address.
+ "efuse-address" is required for this.
+- ti,ldovbb-vset-mask - Required if ldo-address is set, mask for LDO override
+ register to provide override vset value.
+- ti,ldovbb-override-mask - Required if ldo-address is set, mask for LDO
+ override register to enable override vset value.
+- ti,abb_opp_sel: Addendum to the description in required properties
+ efuse: Mandatory if 'efuse-address' register is defined. Provides offset
+ from efuse-address to pick up ABB characteristics. Set to 0 if
+ 'efuse-address' is not defined.
+ RBB enable efuse Mask: Optional if 'efuse-address' register is defined.
+ 'ABB mode' is force set to RBB mode if value at "efuse-address"
+ + efuse maps to RBB mask. Set to 0 to ignore this.
+ FBB enable efuse Mask: Optional if 'efuse-address' register is defined.
+ 'ABB mode' is force set to FBB mode if value at "efuse-address"
+ + efuse maps to FBB mask (valid only if RBB mask does not match)
+ Set to 0 to ignore this.
+ Vset value efuse Mask: Mandatory if ldo-address is set. Picks up from
+ efuse the value to set in 'ti,ldovbb-vset-mask' at ldo-address.
+
+Example #1: Simplest configuration (no efuse data, hard coded ABB table):
+abb_x: regulator-abb-x {
+ compatible = "ti,abb-v1";
+ regulator-name = "abb_x";
+ #address-cell = <0>;
+ #size-cells = <0>;
+ reg = <0x483072f0 0x8>, <0x48306818 0x4>;
+ reg-names = "base-address", "int-address";
+ ti,tranxdone-status-mask = <0x4000000>;
+ clocks = <&sysclk>;
+ ti,settling-time = <30>;
+ ti,clock-cycles = <8>;
+ ti,abb_info = <
+ /* uV ABB efuse rbb_m fbb_m vset_m */
+ 1012500 0 0 0 0 0 /* Bypass */
+ 1200000 3 0 0 0 0 /* RBB mandatory */
+ 1320000 1 0 0 0 0 /* FBB mandatory */
+ >;
+};
+
+Example #2: Efuse bits contain ABB mode setting (no LDO override capability)
+abb_y: regulator-abb-y {
+ compatible = "ti,abb-v2";
+ regulator-name = "abb_y";
+ #address-cell = <0>;
+ #size-cells = <0>;
+ reg = <0x4a307bd0 0x8>, <0x4a306014 0x4>, <0x4A002268 0x8>;
+ reg-names = "base-address", "int-address", "efuse-address";
+ ti,tranxdone-status-mask = <0x4000000>;
+ clocks = <&sysclk>;
+ ti,settling-time = <50>;
+ ti,clock-cycles = <16>;
+ ti,abb_info = <
+ /* uV ABB efuse rbb_m fbb_m vset_m */
+ 975000 0 0 0 0 0 /* Bypass */
+ 1012500 0 0 0x40000 0 0 /* RBB optional */
+ 1200000 0 0x4 0 0x40000 0 /* FBB optional */
+ 1320000 1 0 0 0 0 /* FBB mandatory */
+ >;
+};
+
+Example #3: Efuse bits contain ABB mode setting and LDO override capability
+abb_z: regulator-abb-z {
+ compatible = "ti,abb-v2";
+ regulator-name = "abb_z";
+ #address-cell = <0>;
+ #size-cells = <0>;
+ reg = <0x4ae07ce4 0x8>, <0x4ae06010 0x4>,
+ <0x4a002194 0x8>, <0x4ae0C314 0x4>;
+ reg-names = "base-address", "int-address",
+ "efuse-address", "ldo-address";
+ ti,tranxdone-status-mask = <0x8000000>;
+ /* LDOVBBMM_MUX_CTRL */
+ ti,ldovbb-override-mask = <0x400>;
+ /* LDOVBBMM_VSET_OUT */
+ ti,ldovbb-vset-mask = <0x1F>;
+ clocks = <&sysclk>;
+ ti,settling-time = <50>;
+ ti,clock-cycles = <16>;
+ ti,abb_info = <
+ /* uV ABB efuse rbb_m fbb_m vset_m */
+ 975000 0 0 0 0 0 /* Bypass */
+ 1200000 0 0x4 0 0x40000 0x1f00 /* FBB optional, vset */
+ >;
+};
{
struct pm8607_regulator_info *info = platform_get_drvdata(pdev);
- platform_set_drvdata(pdev, NULL);
regulator_unregister(info->regulator);
return 0;
}
via I2C bus. The provided regulator is suitable for
Exynos-4 chips to control VARM and VINT voltages.
+config REGULATOR_MAX77693
+ tristate "Maxim MAX77693 regulator"
+ depends on MFD_MAX77693
+ help
+ This driver controls a Maxim 77693 regulator via I2C bus.
+ The regulators include two LDOs, 'SAFEOUT1', 'SAFEOUT2'
+ and one current regulator 'CHARGER'. This is suitable for
+ Exynos-4x12 chips.
+
config REGULATOR_PCAP
tristate "Motorola PCAP2 regulator driver"
depends on EZX_PCAP
This driver supports the voltage regulators provided by
this family of companion chips.
+config REGULATOR_TI_ABB
+ bool "TI Adaptive Body Bias on-chip LDO"
+ depends on ARCH_OMAP
+ help
+ Select this option to support Texas Instruments' on-chip Adaptive Body
+ Bias (ABB) LDO regulators. It is recommended that this option be
+ enabled on required TI SoC. Certain Operating Performance Points
+ on TI SoCs may be unstable without enabling this as it provides
+ device specific optimized bias to allow/optimize functionality.
+
config REGULATOR_VEXPRESS
tristate "Versatile Express regulators"
depends on VEXPRESS_CONFIG
obj-$(CONFIG_REGULATOR_88PM8607) += 88pm8607.o
obj-$(CONFIG_REGULATOR_AAT2870) += aat2870-regulator.o
obj-$(CONFIG_REGULATOR_AB3100) += ab3100.o
-obj-$(CONFIG_REGULATOR_AB8500) += ab8500.o ab8500-ext.o
+obj-$(CONFIG_REGULATOR_AB8500) += ab8500-ext.o ab8500.o
obj-$(CONFIG_REGULATOR_AD5398) += ad5398.o
obj-$(CONFIG_REGULATOR_ANATOP) += anatop-regulator.o
obj-$(CONFIG_REGULATOR_ARIZONA) += arizona-micsupp.o arizona-ldo1.o
obj-$(CONFIG_REGULATOR_MAX8997) += max8997.o
obj-$(CONFIG_REGULATOR_MAX8998) += max8998.o
obj-$(CONFIG_REGULATOR_MAX77686) += max77686.o
+obj-$(CONFIG_REGULATOR_MAX77693) += max77693.o
obj-$(CONFIG_REGULATOR_MC13783) += mc13783-regulator.o
obj-$(CONFIG_REGULATOR_MC13892) += mc13892-regulator.o
obj-$(CONFIG_REGULATOR_MC13XXX_CORE) += mc13xxx-regulator-core.o
obj-$(CONFIG_REGULATOR_TPS65912) += tps65912-regulator.o
obj-$(CONFIG_REGULATOR_TPS80031) += tps80031-regulator.o
obj-$(CONFIG_REGULATOR_TWL4030) += twl-regulator.o
+obj-$(CONFIG_REGULATOR_TI_ABB) += ti-abb-regulator.o
obj-$(CONFIG_REGULATOR_VEXPRESS) += vexpress.o
obj-$(CONFIG_REGULATOR_WM831X) += wm831x-dcdc.o
obj-$(CONFIG_REGULATOR_WM831X) += wm831x-isink.o
#include <linux/kernel.h>
#include <linux/err.h>
#include <linux/module.h>
+#include <linux/of.h>
#include <linux/platform_device.h>
#include <linux/regulator/driver.h>
#include <linux/regulator/machine.h>
+#include <linux/regulator/of_regulator.h>
#include <linux/mfd/abx500.h>
#include <linux/mfd/abx500/ab8500.h>
#include <linux/regulator/ab8500.h>
return ret;
}
+static int ab8500_ext_set_voltage(struct regulator_dev *rdev, int min_uV,
+ int max_uV, unsigned *selector)
+{
+ struct regulation_constraints *regu_constraints = rdev->constraints;
+
+ if (!regu_constraints) {
+ dev_err(rdev_get_dev(rdev), "No regulator constraints\n");
+ return -EINVAL;
+ }
+
+ if (regu_constraints->min_uV == min_uV &&
+ regu_constraints->max_uV == max_uV)
+ return 0;
+
+ dev_err(rdev_get_dev(rdev),
+ "Requested min %duV max %duV != constrained min %duV max %duV\n",
+ min_uV, max_uV,
+ regu_constraints->min_uV, regu_constraints->max_uV);
+
+ return -EINVAL;
+}
+
static int ab8500_ext_list_voltage(struct regulator_dev *rdev,
unsigned selector)
{
.is_enabled = ab8500_ext_regulator_is_enabled,
.set_mode = ab8500_ext_regulator_set_mode,
.get_mode = ab8500_ext_regulator_get_mode,
+ .set_voltage = ab8500_ext_set_voltage,
.list_voltage = ab8500_ext_list_voltage,
};
},
};
-int ab8500_ext_regulator_init(struct platform_device *pdev)
+static struct of_regulator_match ab8500_ext_regulator_match[] = {
+ { .name = "ab8500_ext1", .driver_data = (void *) AB8500_EXT_SUPPLY1, },
+ { .name = "ab8500_ext2", .driver_data = (void *) AB8500_EXT_SUPPLY2, },
+ { .name = "ab8500_ext3", .driver_data = (void *) AB8500_EXT_SUPPLY3, },
+};
+
+static int ab8500_ext_regulator_probe(struct platform_device *pdev)
{
struct ab8500 *ab8500 = dev_get_drvdata(pdev->dev.parent);
struct ab8500_platform_data *ppdata;
struct ab8500_regulator_platform_data *pdata;
+ struct device_node *np = pdev->dev.of_node;
struct regulator_config config = { };
int i, err;
+ if (np) {
+ err = of_regulator_match(&pdev->dev, np,
+ ab8500_ext_regulator_match,
+ ARRAY_SIZE(ab8500_ext_regulator_match));
+ if (err < 0) {
+ dev_err(&pdev->dev,
+ "Error parsing regulator init data: %d\n", err);
+ return err;
+ }
+ }
+
if (!ab8500) {
dev_err(&pdev->dev, "null mfd parent\n");
return -EINVAL;
}
+
ppdata = dev_get_platdata(ab8500->dev);
if (!ppdata) {
dev_err(&pdev->dev, "null parent pdata\n");
pdata->ext_regulator[i].driver_data;
config.dev = &pdev->dev;
- config.init_data = &pdata->ext_regulator[i];
config.driver_data = info;
+ config.of_node = ab8500_ext_regulator_match[i].of_node;
+ config.init_data = (np) ?
+ ab8500_ext_regulator_match[i].init_data :
+ &pdata->ext_regulator[i];
/* register regulator with framework */
info->rdev = regulator_register(&info->desc, &config);
return 0;
}
-void ab8500_ext_regulator_exit(struct platform_device *pdev)
+static int ab8500_ext_regulator_remove(struct platform_device *pdev)
{
int i;
regulator_unregister(info->rdev);
}
+
+ return 0;
+}
+
+static struct platform_driver ab8500_ext_regulator_driver = {
+ .probe = ab8500_ext_regulator_probe,
+ .remove = ab8500_ext_regulator_remove,
+ .driver = {
+ .name = "ab8500-ext-regulator",
+ .owner = THIS_MODULE,
+ },
+};
+
+static int __init ab8500_ext_regulator_init(void)
+{
+ int ret;
+
+ ret = platform_driver_register(&ab8500_ext_regulator_driver);
+ if (ret)
+ pr_err("Failed to register ab8500 ext regulator: %d\n", ret);
+
+ return ret;
+}
+subsys_initcall(ab8500_ext_regulator_init);
+
+static void __exit ab8500_ext_regulator_exit(void)
+{
+ platform_driver_unregister(&ab8500_ext_regulator_driver);
}
+module_exit(ab8500_ext_regulator_exit);
MODULE_LICENSE("GPL v2");
MODULE_AUTHOR("Bengt Jonsson <bengt.g.jonsson@stericsson.com>");
.n_voltages = ARRAY_SIZE(ldo_vauxn_voltages),
.volt_table = ldo_vauxn_voltages,
.enable_time = 200,
+ .supply_name = "vin",
},
.load_lp_uA = 5000,
.update_bank = 0x04,
.n_voltages = ARRAY_SIZE(ldo_vauxn_voltages),
.volt_table = ldo_vauxn_voltages,
.enable_time = 200,
+ .supply_name = "vin",
},
.load_lp_uA = 5000,
.update_bank = 0x04,
.n_voltages = ARRAY_SIZE(ldo_vaux3_voltages),
.volt_table = ldo_vaux3_voltages,
.enable_time = 450,
+ .supply_name = "vin",
},
.load_lp_uA = 5000,
.update_bank = 0x04,
return err;
}
- if (!is_ab8505(ab8500)) {
- /* register external regulators (before Vaux1, 2 and 3) */
- err = ab8500_ext_regulator_init(pdev);
- if (err)
- return err;
- }
-
/* register all regulators */
for (i = 0; i < abx500_regulator.info_size; i++) {
err = ab8500_regulator_register(pdev, &pdata->regulator[i],
i, NULL);
- if (err < 0) {
- if (!is_ab8505(ab8500))
- ab8500_ext_regulator_exit(pdev);
+ if (err < 0)
return err;
- }
}
return 0;
static int ab8500_regulator_remove(struct platform_device *pdev)
{
int i, err;
- struct ab8500 *ab8500 = dev_get_drvdata(pdev->dev.parent);
for (i = 0; i < abx500_regulator.info_size; i++) {
struct ab8500_regulator_info *info = NULL;
regulator_unregister(info->regulator);
}
- /* remove external regulators (after Vaux1, 2 and 3) */
- if (!is_ab8505(ab8500))
- ab8500_ext_regulator_exit(pdev);
-
/* remove regulator debug */
err = ab8500_regulator_debug_exit(pdev);
if (err)
}
EXPORT_SYMBOL_GPL(regulator_list_voltage);
+/**
+ * regulator_get_linear_step - return the voltage step size between VSEL values
+ * @regulator: regulator source
+ *
+ * Returns the voltage step size between VSEL values for linear
+ * regulators, or return 0 if the regulator isn't a linear regulator.
+ */
+unsigned int regulator_get_linear_step(struct regulator *regulator)
+{
+ struct regulator_dev *rdev = regulator->rdev;
+
+ return rdev->desc->uV_step;
+}
+EXPORT_SYMBOL_GPL(regulator_get_linear_step);
+
/**
* regulator_is_supported_voltage - check if a voltage range can be supported
*
if (i == 0)
config.init_data = init_data;
else
- config.init_data = 0;
+ config.init_data = NULL;
config.driver_data = pmic;
pmic->rdev[i] = regulator_register(&isl_rd[i], &config);
return -ENODEV;
}
- lp3971 = kzalloc(sizeof(struct lp3971), GFP_KERNEL);
+ lp3971 = devm_kzalloc(&i2c->dev, sizeof(struct lp3971), GFP_KERNEL);
if (lp3971 == NULL)
return -ENOMEM;
ret = -ENODEV;
if (ret < 0) {
dev_err(&i2c->dev, "failed to detect device\n");
- goto err_detect;
+ return ret;
}
ret = setup_regulators(lp3971, pdata);
if (ret < 0)
- goto err_detect;
+ return ret;
i2c_set_clientdata(i2c, lp3971);
return 0;
-
-err_detect:
- kfree(lp3971);
- return ret;
}
static int lp3971_i2c_remove(struct i2c_client *i2c)
regulator_unregister(lp3971->rdev[i]);
kfree(lp3971->rdev);
- kfree(lp3971);
return 0;
}
return -ENODEV;
}
- lp3972 = kzalloc(sizeof(struct lp3972), GFP_KERNEL);
+ lp3972 = devm_kzalloc(&i2c->dev, sizeof(struct lp3972), GFP_KERNEL);
if (!lp3972)
return -ENOMEM;
}
if (ret < 0) {
dev_err(&i2c->dev, "failed to detect device. ret = %d\n", ret);
- goto err_detect;
+ return ret;
}
ret = setup_regulators(lp3972, pdata);
if (ret < 0)
- goto err_detect;
+ return ret;
i2c_set_clientdata(i2c, lp3972);
return 0;
-
-err_detect:
- kfree(lp3972);
- return ret;
}
static int lp3972_i2c_remove(struct i2c_client *i2c)
for (i = 0; i < lp3972->num_regulators; i++)
regulator_unregister(lp3972->rdev[i]);
kfree(lp3972->rdev);
- kfree(lp3972);
return 0;
}
#include <linux/regulator/lp872x.h>
#include <linux/regulator/driver.h>
#include <linux/platform_device.h>
+#include <linux/of.h>
+#include <linux/of_gpio.h>
+#include <linux/regulator/of_regulator.h>
/* Registers : LP8720/8725 shared */
#define LP872X_GENERAL_CFG 0x00
gpio = dvs->gpio;
if (!gpio_is_valid(gpio)) {
- dev_err(lp->dev, "invalid gpio: %d\n", gpio);
- return -EINVAL;
+ dev_warn(lp->dev, "invalid gpio: %d\n", gpio);
+ goto set_default_dvs_mode;
}
pinstate = dvs->init_state;
.max_register = MAX_REGISTERS,
};
+#ifdef CONFIG_OF
+
+#define LP872X_VALID_OPMODE (REGULATOR_MODE_FAST | REGULATOR_MODE_NORMAL)
+
+static struct of_regulator_match lp8720_matches[] = {
+ { .name = "ldo1", .driver_data = (void *)LP8720_ID_LDO1, },
+ { .name = "ldo2", .driver_data = (void *)LP8720_ID_LDO2, },
+ { .name = "ldo3", .driver_data = (void *)LP8720_ID_LDO3, },
+ { .name = "ldo4", .driver_data = (void *)LP8720_ID_LDO4, },
+ { .name = "ldo5", .driver_data = (void *)LP8720_ID_LDO5, },
+ { .name = "buck", .driver_data = (void *)LP8720_ID_BUCK, },
+};
+
+static struct of_regulator_match lp8725_matches[] = {
+ { .name = "ldo1", .driver_data = (void *)LP8725_ID_LDO1, },
+ { .name = "ldo2", .driver_data = (void *)LP8725_ID_LDO2, },
+ { .name = "ldo3", .driver_data = (void *)LP8725_ID_LDO3, },
+ { .name = "ldo4", .driver_data = (void *)LP8725_ID_LDO4, },
+ { .name = "ldo5", .driver_data = (void *)LP8725_ID_LDO5, },
+ { .name = "lilo1", .driver_data = (void *)LP8725_ID_LILO1, },
+ { .name = "lilo2", .driver_data = (void *)LP8725_ID_LILO2, },
+ { .name = "buck1", .driver_data = (void *)LP8725_ID_BUCK1, },
+ { .name = "buck2", .driver_data = (void *)LP8725_ID_BUCK2, },
+};
+
+static struct lp872x_platform_data
+*lp872x_populate_pdata_from_dt(struct device *dev, enum lp872x_id which)
+{
+ struct device_node *np = dev->of_node;
+ struct lp872x_platform_data *pdata;
+ struct of_regulator_match *match;
+ struct regulator_init_data *d;
+ int num_matches;
+ int count;
+ int i;
+ u8 dvs_state;
+
+ pdata = devm_kzalloc(dev, sizeof(*pdata), GFP_KERNEL);
+ if (!pdata)
+ goto out;
+
+ of_property_read_u8(np, "ti,general-config", &pdata->general_config);
+ if (of_find_property(np, "ti,update-config", NULL))
+ pdata->update_config = true;
+
+ pdata->dvs = devm_kzalloc(dev, sizeof(struct lp872x_dvs), GFP_KERNEL);
+ if (!pdata->dvs)
+ goto out;
+
+ pdata->dvs->gpio = of_get_named_gpio(np, "ti,dvs-gpio", 0);
+ of_property_read_u8(np, "ti,dvs-vsel", (u8 *)&pdata->dvs->vsel);
+ of_property_read_u8(np, "ti,dvs-state", &dvs_state);
+ pdata->dvs->init_state = dvs_state ? DVS_HIGH : DVS_LOW;
+
+ if (of_get_child_count(np) == 0)
+ goto out;
+
+ switch (which) {
+ case LP8720:
+ match = lp8720_matches;
+ num_matches = ARRAY_SIZE(lp8720_matches);
+ break;
+ case LP8725:
+ match = lp8725_matches;
+ num_matches = ARRAY_SIZE(lp8725_matches);
+ break;
+ default:
+ goto out;
+ }
+
+ count = of_regulator_match(dev, np, match, num_matches);
+ if (count <= 0)
+ goto out;
+
+ for (i = 0; i < num_matches; i++) {
+ pdata->regulator_data[i].id = (int)match[i].driver_data;
+ pdata->regulator_data[i].init_data = match[i].init_data;
+
+ /* Operation mode configuration for buck/buck1/buck2 */
+ if (strncmp(match[i].name, "buck", 4))
+ continue;
+
+ d = pdata->regulator_data[i].init_data;
+ d->constraints.valid_modes_mask |= LP872X_VALID_OPMODE;
+ d->constraints.valid_ops_mask |= REGULATOR_CHANGE_MODE;
+ }
+out:
+ return pdata;
+}
+#else
+static struct lp872x_platform_data
+*lp872x_populate_pdata_from_dt(struct device *dev, enum lp872x_id which)
+{
+ return NULL;
+}
+#endif
+
static int lp872x_probe(struct i2c_client *cl, const struct i2c_device_id *id)
{
struct lp872x *lp;
[LP8725] = LP8725_NUM_REGULATORS,
};
+ if (cl->dev.of_node)
+ cl->dev.platform_data = lp872x_populate_pdata_from_dt(&cl->dev,
+ (enum lp872x_id)id->driver_data);
+
lp = devm_kzalloc(&cl->dev, sizeof(struct lp872x), GFP_KERNEL);
if (!lp)
goto err_mem;
return 0;
}
+static const struct of_device_id lp872x_dt_ids[] = {
+ { .compatible = "ti,lp8720", },
+ { .compatible = "ti,lp8725", },
+ { }
+};
+MODULE_DEVICE_TABLE(of, lp872x_dt_ids);
+
static const struct i2c_device_id lp872x_ids[] = {
{"lp8720", LP8720},
{"lp8725", LP8725},
.driver = {
.name = "lp872x",
.owner = THIS_MODULE,
+ .of_match_table = of_match_ptr(lp872x_dt_ids),
},
.probe = lp872x_probe,
.remove = lp872x_remove,
#include <linux/interrupt.h>
#include <linux/gpio.h>
#include <linux/regmap.h>
-#include <linux/delay.h>
#include <linux/uaccess.h>
#include <linux/regulator/driver.h>
#include <linux/regulator/machine.h>
{
struct lp8788_buck *buck = platform_get_drvdata(pdev);
- platform_set_drvdata(pdev, NULL);
regulator_unregister(buck->regulator);
return 0;
{
struct lp8788_ldo *ldo = platform_get_drvdata(pdev);
- platform_set_drvdata(pdev, NULL);
regulator_unregister(ldo->regulator);
return 0;
{
struct lp8788_ldo *ldo = platform_get_drvdata(pdev);
- platform_set_drvdata(pdev, NULL);
regulator_unregister(ldo->regulator);
return 0;
#include <linux/kernel.h>
#include <linux/bug.h>
-#include <linux/delay.h>
#include <linux/err.h>
#include <linux/gpio.h>
#include <linux/slab.h>
--- /dev/null
+/*
+ * max77693.c - Regulator driver for the Maxim 77693
+ *
+ * Copyright (C) 2013 Samsung Electronics
+ * Jonghwa Lee <jonghwa3.lee@samsung.com>
+ *
+ * This program is free software; you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License as published by
+ * the Free Software Foundation; either version 2 of the License, or
+ * (at your option) any later version.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
+ * GNU General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with this program; if not, write to the Free Software
+ * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
+ *
+ * This driver is based on max77686.c
+ */
+
+#include <linux/err.h>
+#include <linux/slab.h>
+#include <linux/platform_device.h>
+#include <linux/module.h>
+#include <linux/export.h>
+#include <linux/regulator/driver.h>
+#include <linux/regulator/machine.h>
+#include <linux/mfd/max77693.h>
+#include <linux/mfd/max77693-private.h>
+#include <linux/regulator/of_regulator.h>
+
+#define CHGIN_ILIM_STEP_20mA 20000
+
+struct max77693_pmic_dev {
+ struct device *dev;
+ struct max77693_dev *iodev;
+ int num_regulators;
+ struct regulator_dev **rdev;
+};
+
+/* CHARGER regulator ops */
+/* CHARGER regulator uses two bits for enabling */
+static int max77693_chg_is_enabled(struct regulator_dev *rdev)
+{
+ int ret;
+ u8 val;
+
+ ret = max77693_read_reg(rdev->regmap, rdev->desc->enable_reg, &val);
+ if (ret)
+ return ret;
+
+ return (val & rdev->desc->enable_mask) == rdev->desc->enable_mask;
+}
+
+/*
+ * CHARGER regulator - Min : 20mA, Max : 2580mA, step : 20mA
+ * 0x00, 0x01, 0x2, 0x03 = 60 mA
+ * 0x04 ~ 0x7E = (60 + (X - 3) * 20) mA
+ */
+static int max77693_chg_get_current_limit(struct regulator_dev *rdev)
+{
+ unsigned int chg_min_uA = rdev->constraints->min_uA;
+ unsigned int chg_max_uA = rdev->constraints->max_uA;
+ u8 reg, sel;
+ unsigned int val;
+ int ret;
+
+ ret = max77693_read_reg(rdev->regmap,
+ MAX77693_CHG_REG_CHG_CNFG_09, ®);
+ if (ret < 0)
+ return ret;
+
+ sel = reg & CHG_CNFG_09_CHGIN_ILIM_MASK;
+
+ /* the first four codes for charger current are all 60mA */
+ if (sel <= 3)
+ sel = 0;
+ else
+ sel -= 3;
+
+ val = chg_min_uA + CHGIN_ILIM_STEP_20mA * sel;
+ if (val > chg_max_uA)
+ return -EINVAL;
+
+ return val;
+}
+
+static int max77693_chg_set_current_limit(struct regulator_dev *rdev,
+ int min_uA, int max_uA)
+{
+ unsigned int chg_min_uA = rdev->constraints->min_uA;
+ int sel = 0;
+
+ while (chg_min_uA + CHGIN_ILIM_STEP_20mA * sel < min_uA)
+ sel++;
+
+ if (chg_min_uA + CHGIN_ILIM_STEP_20mA * sel > max_uA)
+ return -EINVAL;
+
+ /* the first four codes for charger current are all 60mA */
+ sel += 3;
+
+ return max77693_write_reg(rdev->regmap,
+ MAX77693_CHG_REG_CHG_CNFG_09, sel);
+}
+/* end of CHARGER regulator ops */
+
+static const unsigned int max77693_safeout_table[] = {
+ 4850000,
+ 4900000,
+ 4950000,
+ 3300000,
+};
+
+static struct regulator_ops max77693_safeout_ops = {
+ .list_voltage = regulator_list_voltage_table,
+ .is_enabled = regulator_is_enabled_regmap,
+ .enable = regulator_enable_regmap,
+ .disable = regulator_disable_regmap,
+ .get_voltage_sel = regulator_get_voltage_sel_regmap,
+ .set_voltage_sel = regulator_set_voltage_sel_regmap,
+};
+
+static struct regulator_ops max77693_charger_ops = {
+ .is_enabled = max77693_chg_is_enabled,
+ .enable = regulator_enable_regmap,
+ .disable = regulator_disable_regmap,
+ .get_current_limit = max77693_chg_get_current_limit,
+ .set_current_limit = max77693_chg_set_current_limit,
+};
+
+#define regulator_desc_esafeout(_num) { \
+ .name = "ESAFEOUT"#_num, \
+ .id = MAX77693_ESAFEOUT##_num, \
+ .n_voltages = 4, \
+ .ops = &max77693_safeout_ops, \
+ .type = REGULATOR_VOLTAGE, \
+ .volt_table = max77693_safeout_table, \
+ .vsel_reg = MAX77693_CHG_REG_SAFEOUT_CTRL, \
+ .vsel_mask = SAFEOUT_CTRL_SAFEOUT##_num##_MASK, \
+ .enable_reg = MAX77693_CHG_REG_SAFEOUT_CTRL, \
+ .enable_mask = SAFEOUT_CTRL_ENSAFEOUT##_num##_MASK , \
+}
+
+static struct regulator_desc regulators[] = {
+ regulator_desc_esafeout(1),
+ regulator_desc_esafeout(2),
+ {
+ .name = "CHARGER",
+ .id = MAX77693_CHARGER,
+ .ops = &max77693_charger_ops,
+ .type = REGULATOR_CURRENT,
+ .owner = THIS_MODULE,
+ .enable_reg = MAX77693_CHG_REG_CHG_CNFG_00,
+ .enable_mask = CHG_CNFG_00_CHG_MASK |
+ CHG_CNFG_00_BUCK_MASK,
+ },
+};
+
+#ifdef CONFIG_OF
+static int max77693_pmic_dt_parse_rdata(struct device *dev,
+ struct max77693_regulator_data **rdata)
+{
+ struct device_node *np;
+ struct of_regulator_match *rmatch;
+ struct max77693_regulator_data *tmp;
+ int i, matched = 0;
+
+ np = of_find_node_by_name(dev->parent->of_node, "regulators");
+ if (!np)
+ return -EINVAL;
+
+ rmatch = devm_kzalloc(dev,
+ sizeof(*rmatch) * ARRAY_SIZE(regulators), GFP_KERNEL);
+ if (!rmatch)
+ return -ENOMEM;
+
+ for (i = 0; i < ARRAY_SIZE(regulators); i++)
+ rmatch[i].name = regulators[i].name;
+
+ matched = of_regulator_match(dev, np, rmatch, ARRAY_SIZE(regulators));
+ if (matched <= 0)
+ return matched;
+ *rdata = devm_kzalloc(dev, sizeof(**rdata) * matched, GFP_KERNEL);
+ if (!(*rdata))
+ return -ENOMEM;
+
+ tmp = *rdata;
+
+ for (i = 0; i < matched; i++) {
+ tmp->initdata = rmatch[i].init_data;
+ tmp->of_node = rmatch[i].of_node;
+ tmp->id = regulators[i].id;
+ tmp++;
+ }
+
+ return matched;
+}
+#else
+static int max77693_pmic_dt_parse_rdata(struct device *dev,
+ struct max77693_regulator_data **rdata)
+{
+ return 0;
+}
+#endif /* CONFIG_OF */
+
+static int max77693_pmic_init_rdata(struct device *dev,
+ struct max77693_regulator_data **rdata)
+{
+ struct max77693_platform_data *pdata;
+ int num_regulators = 0;
+
+ pdata = dev_get_platdata(dev->parent);
+ if (pdata) {
+ *rdata = pdata->regulators;
+ num_regulators = pdata->num_regulators;
+ }
+
+ if (!(*rdata) && dev->parent->of_node)
+ num_regulators = max77693_pmic_dt_parse_rdata(dev, rdata);
+
+ return num_regulators;
+}
+
+static int max77693_pmic_probe(struct platform_device *pdev)
+{
+ struct max77693_dev *iodev = dev_get_drvdata(pdev->dev.parent);
+ struct max77693_pmic_dev *max77693_pmic;
+ struct max77693_regulator_data *rdata = NULL;
+ int num_rdata, i, ret;
+ struct regulator_config config;
+
+ num_rdata = max77693_pmic_init_rdata(&pdev->dev, &rdata);
+ if (!rdata || num_rdata <= 0) {
+ dev_err(&pdev->dev, "No init data supplied.\n");
+ return -ENODEV;
+ }
+
+ max77693_pmic = devm_kzalloc(&pdev->dev,
+ sizeof(struct max77693_pmic_dev),
+ GFP_KERNEL);
+ if (!max77693_pmic)
+ return -ENOMEM;
+
+ max77693_pmic->rdev = devm_kzalloc(&pdev->dev,
+ sizeof(struct regulator_dev *) * num_rdata,
+ GFP_KERNEL);
+ if (!max77693_pmic->rdev)
+ return -ENOMEM;
+
+ max77693_pmic->dev = &pdev->dev;
+ max77693_pmic->iodev = iodev;
+ max77693_pmic->num_regulators = num_rdata;
+
+ config.dev = &pdev->dev;
+ config.regmap = iodev->regmap;
+ config.driver_data = max77693_pmic;
+ platform_set_drvdata(pdev, max77693_pmic);
+
+ for (i = 0; i < max77693_pmic->num_regulators; i++) {
+ int id = rdata[i].id;
+
+ config.init_data = rdata[i].initdata;
+ config.of_node = rdata[i].of_node;
+
+ max77693_pmic->rdev[i] = regulator_register(®ulators[id],
+ &config);
+ if (IS_ERR(max77693_pmic->rdev[i])) {
+ ret = PTR_ERR(max77693_pmic->rdev[i]);
+ dev_err(max77693_pmic->dev,
+ "Failed to initialize regulator-%d\n", id);
+ max77693_pmic->rdev[i] = NULL;
+ goto err;
+ }
+ }
+
+ return 0;
+ err:
+ while (--i >= 0)
+ regulator_unregister(max77693_pmic->rdev[i]);
+
+ return ret;
+}
+
+static int max77693_pmic_remove(struct platform_device *pdev)
+{
+ struct max77693_pmic_dev *max77693_pmic = platform_get_drvdata(pdev);
+ struct regulator_dev **rdev = max77693_pmic->rdev;
+ int i;
+
+ for (i = 0; i < max77693_pmic->num_regulators; i++)
+ if (rdev[i])
+ regulator_unregister(rdev[i]);
+
+ return 0;
+}
+
+static const struct platform_device_id max77693_pmic_id[] = {
+ {"max77693-pmic", 0},
+ {},
+};
+
+MODULE_DEVICE_TABLE(platform, max77693_pmic_id);
+
+static struct platform_driver max77693_pmic_driver = {
+ .driver = {
+ .name = "max77693-pmic",
+ .owner = THIS_MODULE,
+ },
+ .probe = max77693_pmic_probe,
+ .remove = max77693_pmic_remove,
+ .id_table = max77693_pmic_id,
+};
+
+module_platform_driver(max77693_pmic_driver);
+
+MODULE_DESCRIPTION("MAXIM MAX77693 regulator driver");
+MODULE_AUTHOR("Jonghwa Lee <jonghwa3.lee@samsung.com>");
+MODULE_LICENSE("GPL");
{
struct regulator_dev *rdev = platform_get_drvdata(pdev);
- platform_set_drvdata(pdev, NULL);
regulator_unregister(rdev);
return 0;
#include <linux/module.h>
#include <linux/init.h>
#include <linux/err.h>
+#include <linux/of.h>
#include <linux/platform_device.h>
#include <linux/regulator/driver.h>
#include <linux/regulator/machine.h>
#include <linux/regulator/max8973-regulator.h>
+#include <linux/regulator/of_regulator.h>
#include <linux/gpio.h>
#include <linux/i2c.h>
#include <linux/slab.h>
int curr_vout_reg;
int curr_gpio_val;
bool valid_dvs_gpio;
+ struct regulator_ops ops;
};
/*
REGULATOR_MODE_FAST : REGULATOR_MODE_NORMAL;
}
-static struct regulator_ops max8973_dcdc_ops = {
+static const struct regulator_ops max8973_dcdc_ops = {
.get_voltage_sel = max8973_dcdc_get_voltage_sel,
.set_voltage_sel = max8973_dcdc_set_voltage_sel,
.list_voltage = regulator_list_voltage_linear,
int ret;
pdata = client->dev.platform_data;
- if (!pdata) {
+
+ if (!pdata && !client->dev.of_node) {
dev_err(&client->dev, "No Platform data");
return -EIO;
}
}
i2c_set_clientdata(client, max);
+ max->ops = max8973_dcdc_ops;
max->dev = &client->dev;
max->desc.name = id->name;
max->desc.id = 0;
- max->desc.ops = &max8973_dcdc_ops;
+ max->desc.ops = &max->ops;
max->desc.type = REGULATOR_VOLTAGE;
max->desc.owner = THIS_MODULE;
max->desc.min_uV = MAX8973_MIN_VOLATGE;
max->desc.uV_step = MAX8973_VOLATGE_STEP;
max->desc.n_voltages = MAX8973_BUCK_N_VOLTAGE;
- if (!pdata->enable_ext_control) {
+ if (!pdata || !pdata->enable_ext_control) {
max->desc.enable_reg = MAX8973_VOUT;
max->desc.enable_mask = MAX8973_VOUT_ENABLE;
- max8973_dcdc_ops.enable = regulator_enable_regmap;
- max8973_dcdc_ops.disable = regulator_disable_regmap;
- max8973_dcdc_ops.is_enabled = regulator_is_enabled_regmap;
+ max->ops.enable = regulator_enable_regmap;
+ max->ops.disable = regulator_disable_regmap;
+ max->ops.is_enabled = regulator_is_enabled_regmap;
+ }
+
+ if (pdata) {
+ max->dvs_gpio = pdata->dvs_gpio;
+ max->enable_external_control = pdata->enable_ext_control;
+ max->curr_gpio_val = pdata->dvs_def_state;
+ max->curr_vout_reg = MAX8973_VOUT + pdata->dvs_def_state;
+ } else {
+ max->dvs_gpio = -EINVAL;
+ max->curr_vout_reg = MAX8973_VOUT;
}
- max->enable_external_control = pdata->enable_ext_control;
- max->dvs_gpio = pdata->dvs_gpio;
- max->curr_gpio_val = pdata->dvs_def_state;
- max->curr_vout_reg = MAX8973_VOUT + pdata->dvs_def_state;
max->lru_index[0] = max->curr_vout_reg;
- max->valid_dvs_gpio = false;
if (gpio_is_valid(max->dvs_gpio)) {
int gpio_flags;
max->lru_index[i] = i;
max->lru_index[0] = max->curr_vout_reg;
max->lru_index[max->curr_vout_reg] = 0;
+ } else {
+ max->valid_dvs_gpio = false;
}
- ret = max8973_init_dcdc(max, pdata);
- if (ret < 0) {
- dev_err(max->dev, "Max8973 Init failed, err = %d\n", ret);
- return ret;
+ if (pdata) {
+ ret = max8973_init_dcdc(max, pdata);
+ if (ret < 0) {
+ dev_err(max->dev, "Max8973 Init failed, err = %d\n", ret);
+ return ret;
+ }
}
config.dev = &client->dev;
- config.init_data = pdata->reg_init_data;
+ config.init_data = pdata ? pdata->reg_init_data :
+ of_get_regulator_init_data(&client->dev, client->dev.of_node);
config.driver_data = max;
config.of_node = client->dev.of_node;
config.regmap = max->regmap;
struct mc13xxx_regulator_priv *priv = platform_get_drvdata(pdev);
int i;
- platform_set_drvdata(pdev, NULL);
-
for (i = 0; i < priv->num_regulators; i++)
regulator_unregister(priv->regulators[i]);
struct mc13xxx_regulator_priv *priv = platform_get_drvdata(pdev);
int i;
- platform_set_drvdata(pdev, NULL);
-
for (i = 0; i < priv->num_regulators; i++)
regulator_unregister(priv->regulators[i]);
else /* status change should be possible if not always on. */
constraints->valid_ops_mask |= REGULATOR_CHANGE_STATUS;
+ if (of_property_read_bool(np, "regulator-allow-bypass"))
+ constraints->valid_ops_mask |= REGULATOR_CHANGE_BYPASS;
+
ramp_delay = of_get_property(np, "regulator-ramp-delay", NULL);
if (ramp_delay)
constraints->ramp_delay = be32_to_cpu(*ramp_delay);
struct regulator_dev *rdev = platform_get_drvdata(pdev);
regulator_unregister(rdev);
- platform_set_drvdata(pdev, NULL);
return 0;
}
{
struct regulator_dev *rdev = platform_get_drvdata(pdev);
- platform_set_drvdata(pdev, NULL);
regulator_unregister(rdev);
return 0;
*/
#include <linux/bug.h>
-#include <linux/delay.h>
#include <linux/err.h>
#include <linux/gpio.h>
#include <linux/slab.h>
--- /dev/null
+/*
+ * Texas Instruments SoC Adaptive Body Bias(ABB) Regulator
+ *
+ * Copyright (C) 2011 Texas Instruments, Inc.
+ * Mike Turquette <mturquette@ti.com>
+ *
+ * Copyright (C) 2012-2013 Texas Instruments, Inc.
+ * Andrii Tseglytskyi <andrii.tseglytskyi@ti.com>
+ * Nishanth Menon <nm@ti.com>
+ *
+ * This program is free software; you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License version 2 as
+ * published by the Free Software Foundation.
+ *
+ * This program is distributed "as is" WITHOUT ANY WARRANTY of any
+ * kind, whether express or implied; without even the implied warranty
+ * of MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
+ * GNU General Public License for more details.
+ */
+#include <linux/clk.h>
+#include <linux/delay.h>
+#include <linux/err.h>
+#include <linux/io.h>
+#include <linux/module.h>
+#include <linux/of_device.h>
+#include <linux/of.h>
+#include <linux/platform_device.h>
+#include <linux/regulator/driver.h>
+#include <linux/regulator/machine.h>
+#include <linux/regulator/of_regulator.h>
+
+/*
+ * ABB LDO operating states:
+ * NOMINAL_OPP: bypasses the ABB LDO
+ * FAST_OPP: sets ABB LDO to Forward Body-Bias
+ * SLOW_OPP: sets ABB LDO to Reverse Body-Bias
+ */
+#define TI_ABB_NOMINAL_OPP 0
+#define TI_ABB_FAST_OPP 1
+#define TI_ABB_SLOW_OPP 3
+
+/**
+ * struct ti_abb_info - ABB information per voltage setting
+ * @opp_sel: one of TI_ABB macro
+ * @vset: (optional) vset value that LDOVBB needs to be overriden with.
+ *
+ * Array of per voltage entries organized in the same order as regulator_desc's
+ * volt_table list. (selector is used to index from this array)
+ */
+struct ti_abb_info {
+ u32 opp_sel;
+ u32 vset;
+};
+
+/**
+ * struct ti_abb_reg - Register description for ABB block
+ * @setup_reg: setup register offset from base
+ * @control_reg: control register offset from base
+ * @sr2_wtcnt_value_mask: setup register- sr2_wtcnt_value mask
+ * @fbb_sel_mask: setup register- FBB sel mask
+ * @rbb_sel_mask: setup register- RBB sel mask
+ * @sr2_en_mask: setup register- enable mask
+ * @opp_change_mask: control register - mask to trigger LDOVBB change
+ * @opp_sel_mask: control register - mask for mode to operate
+ */
+struct ti_abb_reg {
+ u32 setup_reg;
+ u32 control_reg;
+
+ /* Setup register fields */
+ u32 sr2_wtcnt_value_mask;
+ u32 fbb_sel_mask;
+ u32 rbb_sel_mask;
+ u32 sr2_en_mask;
+
+ /* Control register fields */
+ u32 opp_change_mask;
+ u32 opp_sel_mask;
+};
+
+/**
+ * struct ti_abb - ABB instance data
+ * @rdesc: regulator descriptor
+ * @clk: clock(usually sysclk) supplying ABB block
+ * @base: base address of ABB block
+ * @int_base: interrupt register base address
+ * @efuse_base: (optional) efuse base address for ABB modes
+ * @ldo_base: (optional) LDOVBB vset override base address
+ * @regs: pointer to struct ti_abb_reg for ABB block
+ * @txdone_mask: mask on int_base for tranxdone interrupt
+ * @ldovbb_override_mask: mask to ldo_base for overriding default LDO VBB
+ * vset with value from efuse
+ * @ldovbb_vset_mask: mask to ldo_base for providing the VSET override
+ * @info: array to per voltage ABB configuration
+ * @current_info_idx: current index to info
+ * @settling_time: SoC specific settling time for LDO VBB
+ */
+struct ti_abb {
+ struct regulator_desc rdesc;
+ struct clk *clk;
+ void __iomem *base;
+ void __iomem *int_base;
+ void __iomem *efuse_base;
+ void __iomem *ldo_base;
+
+ const struct ti_abb_reg *regs;
+ u32 txdone_mask;
+ u32 ldovbb_override_mask;
+ u32 ldovbb_vset_mask;
+
+ struct ti_abb_info *info;
+ int current_info_idx;
+
+ u32 settling_time;
+};
+
+/**
+ * ti_abb_rmw() - handy wrapper to set specific register bits
+ * @mask: mask for register field
+ * @value: value shifted to mask location and written
+ * @offset: offset of register
+ * @base: base address
+ *
+ * Return: final register value (may be unused)
+ */
+static inline u32 ti_abb_rmw(u32 mask, u32 value, u32 offset,
+ void __iomem *base)
+{
+ u32 val;
+
+ val = readl(base + offset);
+ val &= ~mask;
+ val |= (value << __ffs(mask)) & mask;
+ writel(val, base + offset);
+
+ return val;
+}
+
+/**
+ * ti_abb_check_txdone() - handy wrapper to check ABB tranxdone status
+ * @abb: pointer to the abb instance
+ *
+ * Return: true or false
+ */
+static inline bool ti_abb_check_txdone(const struct ti_abb *abb)
+{
+ return !!(readl(abb->int_base) & abb->txdone_mask);
+}
+
+/**
+ * ti_abb_clear_txdone() - handy wrapper to clear ABB tranxdone status
+ * @abb: pointer to the abb instance
+ */
+static inline void ti_abb_clear_txdone(const struct ti_abb *abb)
+{
+ writel(abb->txdone_mask, abb->int_base);
+};
+
+/**
+ * ti_abb_wait_tranx() - waits for ABB tranxdone event
+ * @dev: device
+ * @abb: pointer to the abb instance
+ *
+ * Return: 0 on success or -ETIMEDOUT if the event is not cleared on time.
+ */
+static int ti_abb_wait_txdone(struct device *dev, struct ti_abb *abb)
+{
+ int timeout = 0;
+ bool status;
+
+ while (timeout++ <= abb->settling_time) {
+ status = ti_abb_check_txdone(abb);
+ if (status)
+ break;
+
+ udelay(1);
+ }
+
+ if (timeout > abb->settling_time) {
+ dev_warn_ratelimited(dev,
+ "%s:TRANXDONE timeout(%duS) int=0x%08x\n",
+ __func__, timeout, readl(abb->int_base));
+ return -ETIMEDOUT;
+ }
+
+ return 0;
+}
+
+/**
+ * ti_abb_clear_all_txdone() - clears ABB tranxdone event
+ * @dev: device
+ * @abb: pointer to the abb instance
+ *
+ * Return: 0 on success or -ETIMEDOUT if the event is not cleared on time.
+ */
+static int ti_abb_clear_all_txdone(struct device *dev, const struct ti_abb *abb)
+{
+ int timeout = 0;
+ bool status;
+
+ while (timeout++ <= abb->settling_time) {
+ ti_abb_clear_txdone(abb);
+
+ status = ti_abb_check_txdone(abb);
+ if (!status)
+ break;
+
+ udelay(1);
+ }
+
+ if (timeout > abb->settling_time) {
+ dev_warn_ratelimited(dev,
+ "%s:TRANXDONE timeout(%duS) int=0x%08x\n",
+ __func__, timeout, readl(abb->int_base));
+ return -ETIMEDOUT;
+ }
+
+ return 0;
+}
+
+/**
+ * ti_abb_program_ldovbb() - program LDOVBB register for override value
+ * @dev: device
+ * @abb: pointer to the abb instance
+ * @info: ABB info to program
+ */
+static void ti_abb_program_ldovbb(struct device *dev, const struct ti_abb *abb,
+ struct ti_abb_info *info)
+{
+ u32 val;
+
+ val = readl(abb->ldo_base);
+ /* clear up previous values */
+ val &= ~(abb->ldovbb_override_mask | abb->ldovbb_vset_mask);
+
+ switch (info->opp_sel) {
+ case TI_ABB_SLOW_OPP:
+ case TI_ABB_FAST_OPP:
+ val |= abb->ldovbb_override_mask;
+ val |= info->vset << __ffs(abb->ldovbb_vset_mask);
+ break;
+ }
+
+ writel(val, abb->ldo_base);
+}
+
+/**
+ * ti_abb_set_opp() - Setup ABB and LDO VBB for required bias
+ * @rdev: regulator device
+ * @abb: pointer to the abb instance
+ * @info: ABB info to program
+ *
+ * Return: 0 on success or appropriate error value when fails
+ */
+static int ti_abb_set_opp(struct regulator_dev *rdev, struct ti_abb *abb,
+ struct ti_abb_info *info)
+{
+ const struct ti_abb_reg *regs = abb->regs;
+ struct device *dev = &rdev->dev;
+ int ret;
+
+ ret = ti_abb_clear_all_txdone(dev, abb);
+ if (ret)
+ goto out;
+
+ ti_abb_rmw(regs->fbb_sel_mask | regs->rbb_sel_mask, 0, regs->setup_reg,
+ abb->base);
+
+ switch (info->opp_sel) {
+ case TI_ABB_SLOW_OPP:
+ ti_abb_rmw(regs->rbb_sel_mask, 1, regs->setup_reg, abb->base);
+ break;
+ case TI_ABB_FAST_OPP:
+ ti_abb_rmw(regs->fbb_sel_mask, 1, regs->setup_reg, abb->base);
+ break;
+ }
+
+ /* program next state of ABB ldo */
+ ti_abb_rmw(regs->opp_sel_mask, info->opp_sel, regs->control_reg,
+ abb->base);
+
+ /* program LDO VBB vset override if needed */
+ if (abb->ldo_base)
+ ti_abb_program_ldovbb(dev, abb, info);
+
+ /* Initiate ABB ldo change */
+ ti_abb_rmw(regs->opp_change_mask, 1, regs->control_reg, abb->base);
+
+ /* Wait for ABB LDO to complete transition to new Bias setting */
+ ret = ti_abb_wait_txdone(dev, abb);
+ if (ret)
+ goto out;
+
+ ret = ti_abb_clear_all_txdone(dev, abb);
+ if (ret)
+ goto out;
+
+out:
+ return ret;
+}
+
+/**
+ * ti_abb_set_voltage_sel() - regulator accessor function to set ABB LDO
+ * @rdev: regulator device
+ * @sel: selector to index into required ABB LDO settings (maps to
+ * regulator descriptor's volt_table)
+ *
+ * Return: 0 on success or appropriate error value when fails
+ */
+static int ti_abb_set_voltage_sel(struct regulator_dev *rdev, unsigned sel)
+{
+ const struct regulator_desc *desc = rdev->desc;
+ struct ti_abb *abb = rdev_get_drvdata(rdev);
+ struct device *dev = &rdev->dev;
+ struct ti_abb_info *info, *oinfo;
+ int ret = 0;
+
+ if (!abb) {
+ dev_err_ratelimited(dev, "%s: No regulator drvdata\n",
+ __func__);
+ return -ENODEV;
+ }
+
+ if (!desc->n_voltages || !abb->info) {
+ dev_err_ratelimited(dev,
+ "%s: No valid voltage table entries?\n",
+ __func__);
+ return -EINVAL;
+ }
+
+ if (sel >= desc->n_voltages) {
+ dev_err(dev, "%s: sel idx(%d) >= n_voltages(%d)\n", __func__,
+ sel, desc->n_voltages);
+ return -EINVAL;
+ }
+
+ /* If we are in the same index as we were, nothing to do here! */
+ if (sel == abb->current_info_idx) {
+ dev_dbg(dev, "%s: Already at sel=%d\n", __func__, sel);
+ return ret;
+ }
+
+ /* If data is exactly the same, then just update index, no change */
+ info = &abb->info[sel];
+ oinfo = &abb->info[abb->current_info_idx];
+ if (!memcmp(info, oinfo, sizeof(*info))) {
+ dev_dbg(dev, "%s: Same data new idx=%d, old idx=%d\n", __func__,
+ sel, abb->current_info_idx);
+ goto out;
+ }
+
+ ret = ti_abb_set_opp(rdev, abb, info);
+
+out:
+ if (!ret)
+ abb->current_info_idx = sel;
+ else
+ dev_err_ratelimited(dev,
+ "%s: Volt[%d] idx[%d] mode[%d] Fail(%d)\n",
+ __func__, desc->volt_table[sel], sel,
+ info->opp_sel, ret);
+ return ret;
+}
+
+/**
+ * ti_abb_get_voltage_sel() - Regulator accessor to get current ABB LDO setting
+ * @rdev: regulator device
+ *
+ * Return: 0 on success or appropriate error value when fails
+ */
+static int ti_abb_get_voltage_sel(struct regulator_dev *rdev)
+{
+ const struct regulator_desc *desc = rdev->desc;
+ struct ti_abb *abb = rdev_get_drvdata(rdev);
+ struct device *dev = &rdev->dev;
+
+ if (!abb) {
+ dev_err_ratelimited(dev, "%s: No regulator drvdata\n",
+ __func__);
+ return -ENODEV;
+ }
+
+ if (!desc->n_voltages || !abb->info) {
+ dev_err_ratelimited(dev,
+ "%s: No valid voltage table entries?\n",
+ __func__);
+ return -EINVAL;
+ }
+
+ if (abb->current_info_idx >= (int)desc->n_voltages) {
+ dev_err(dev, "%s: Corrupted data? idx(%d) >= n_voltages(%d)\n",
+ __func__, abb->current_info_idx, desc->n_voltages);
+ return -EINVAL;
+ }
+
+ return abb->current_info_idx;
+}
+
+/**
+ * ti_abb_init_timings() - setup ABB clock timing for the current platform
+ * @dev: device
+ * @abb: pointer to the abb instance
+ *
+ * Return: 0 if timing is updated, else returns error result.
+ */
+static int ti_abb_init_timings(struct device *dev, struct ti_abb *abb)
+{
+ u32 clock_cycles;
+ u32 clk_rate, sr2_wt_cnt_val, cycle_rate;
+ const struct ti_abb_reg *regs = abb->regs;
+ int ret;
+ char *pname = "ti,settling-time";
+
+ /* read device tree properties */
+ ret = of_property_read_u32(dev->of_node, pname, &abb->settling_time);
+ if (ret) {
+ dev_err(dev, "Unable to get property '%s'(%d)\n", pname, ret);
+ return ret;
+ }
+
+ /* ABB LDO cannot be settle in 0 time */
+ if (!abb->settling_time) {
+ dev_err(dev, "Invalid property:'%s' set as 0!\n", pname);
+ return -EINVAL;
+ }
+
+ pname = "ti,clock-cycles";
+ ret = of_property_read_u32(dev->of_node, pname, &clock_cycles);
+ if (ret) {
+ dev_err(dev, "Unable to get property '%s'(%d)\n", pname, ret);
+ return ret;
+ }
+ /* ABB LDO cannot be settle in 0 clock cycles */
+ if (!clock_cycles) {
+ dev_err(dev, "Invalid property:'%s' set as 0!\n", pname);
+ return -EINVAL;
+ }
+
+ abb->clk = devm_clk_get(dev, NULL);
+ if (IS_ERR(abb->clk)) {
+ ret = PTR_ERR(abb->clk);
+ dev_err(dev, "%s: Unable to get clk(%d)\n", __func__, ret);
+ return ret;
+ }
+
+ /*
+ * SR2_WTCNT_VALUE is the settling time for the ABB ldo after a
+ * transition and must be programmed with the correct time at boot.
+ * The value programmed into the register is the number of SYS_CLK
+ * clock cycles that match a given wall time profiled for the ldo.
+ * This value depends on:
+ * settling time of ldo in micro-seconds (varies per OMAP family)
+ * # of clock cycles per SYS_CLK period (varies per OMAP family)
+ * the SYS_CLK frequency in MHz (varies per board)
+ * The formula is:
+ *
+ * ldo settling time (in micro-seconds)
+ * SR2_WTCNT_VALUE = ------------------------------------------
+ * (# system clock cycles) * (sys_clk period)
+ *
+ * Put another way:
+ *
+ * SR2_WTCNT_VALUE = settling time / (# SYS_CLK cycles / SYS_CLK rate))
+ *
+ * To avoid dividing by zero multiply both "# clock cycles" and
+ * "settling time" by 10 such that the final result is the one we want.
+ */
+
+ /* Convert SYS_CLK rate to MHz & prevent divide by zero */
+ clk_rate = DIV_ROUND_CLOSEST(clk_get_rate(abb->clk), 1000000);
+
+ /* Calculate cycle rate */
+ cycle_rate = DIV_ROUND_CLOSEST(clock_cycles * 10, clk_rate);
+
+ /* Calulate SR2_WTCNT_VALUE */
+ sr2_wt_cnt_val = DIV_ROUND_CLOSEST(abb->settling_time * 10, cycle_rate);
+
+ dev_dbg(dev, "%s: Clk_rate=%ld, sr2_cnt=0x%08x\n", __func__,
+ clk_get_rate(abb->clk), sr2_wt_cnt_val);
+
+ ti_abb_rmw(regs->sr2_wtcnt_value_mask, sr2_wt_cnt_val, regs->setup_reg,
+ abb->base);
+
+ return 0;
+}
+
+/**
+ * ti_abb_init_table() - Initialize ABB table from device tree
+ * @dev: device
+ * @abb: pointer to the abb instance
+ * @rinit_data: regulator initdata
+ *
+ * Return: 0 on success or appropriate error value when fails
+ */
+static int ti_abb_init_table(struct device *dev, struct ti_abb *abb,
+ struct regulator_init_data *rinit_data)
+{
+ struct ti_abb_info *info;
+ const struct property *prop;
+ const __be32 *abb_info;
+ const u32 num_values = 6;
+ char *pname = "ti,abb_info";
+ u32 num_entries, i;
+ unsigned int *volt_table;
+ int min_uV = INT_MAX, max_uV = 0;
+ struct regulation_constraints *c = &rinit_data->constraints;
+
+ prop = of_find_property(dev->of_node, pname, NULL);
+ if (!prop) {
+ dev_err(dev, "No '%s' property?\n", pname);
+ return -ENODEV;
+ }
+
+ if (!prop->value) {
+ dev_err(dev, "Empty '%s' property?\n", pname);
+ return -ENODATA;
+ }
+
+ /*
+ * Each abb_info is a set of n-tuple, where n is num_values, consisting
+ * of voltage and a set of detection logic for ABB information for that
+ * voltage to apply.
+ */
+ num_entries = prop->length / sizeof(u32);
+ if (!num_entries || (num_entries % num_values)) {
+ dev_err(dev, "All '%s' list entries need %d vals\n", pname,
+ num_values);
+ return -EINVAL;
+ }
+ num_entries /= num_values;
+
+ info = devm_kzalloc(dev, sizeof(*info) * num_entries, GFP_KERNEL);
+ if (!info) {
+ dev_err(dev, "Can't allocate info table for '%s' property\n",
+ pname);
+ return -ENOMEM;
+ }
+ abb->info = info;
+
+ volt_table = devm_kzalloc(dev, sizeof(unsigned int) * num_entries,
+ GFP_KERNEL);
+ if (!volt_table) {
+ dev_err(dev, "Can't allocate voltage table for '%s' property\n",
+ pname);
+ return -ENOMEM;
+ }
+
+ abb->rdesc.n_voltages = num_entries;
+ abb->rdesc.volt_table = volt_table;
+ /* We do not know where the OPP voltage is at the moment */
+ abb->current_info_idx = -EINVAL;
+
+ abb_info = prop->value;
+ for (i = 0; i < num_entries; i++, info++, volt_table++) {
+ u32 efuse_offset, rbb_mask, fbb_mask, vset_mask;
+ u32 efuse_val;
+
+ /* NOTE: num_values should equal to entries picked up here */
+ *volt_table = be32_to_cpup(abb_info++);
+ info->opp_sel = be32_to_cpup(abb_info++);
+ efuse_offset = be32_to_cpup(abb_info++);
+ rbb_mask = be32_to_cpup(abb_info++);
+ fbb_mask = be32_to_cpup(abb_info++);
+ vset_mask = be32_to_cpup(abb_info++);
+
+ dev_dbg(dev,
+ "[%d]v=%d ABB=%d ef=0x%x rbb=0x%x fbb=0x%x vset=0x%x\n",
+ i, *volt_table, info->opp_sel, efuse_offset, rbb_mask,
+ fbb_mask, vset_mask);
+
+ /* Find min/max for voltage set */
+ if (min_uV > *volt_table)
+ min_uV = *volt_table;
+ if (max_uV < *volt_table)
+ max_uV = *volt_table;
+
+ if (!abb->efuse_base) {
+ /* Ignore invalid data, but warn to help cleanup */
+ if (efuse_offset || rbb_mask || fbb_mask || vset_mask)
+ dev_err(dev, "prop '%s': v=%d,bad efuse/mask\n",
+ pname, *volt_table);
+ goto check_abb;
+ }
+
+ efuse_val = readl(abb->efuse_base + efuse_offset);
+
+ /* Use ABB recommendation from Efuse */
+ if (efuse_val & rbb_mask)
+ info->opp_sel = TI_ABB_SLOW_OPP;
+ else if (efuse_val & fbb_mask)
+ info->opp_sel = TI_ABB_FAST_OPP;
+ else if (rbb_mask || fbb_mask)
+ info->opp_sel = TI_ABB_NOMINAL_OPP;
+
+ dev_dbg(dev,
+ "[%d]v=%d efusev=0x%x final ABB=%d\n",
+ i, *volt_table, efuse_val, info->opp_sel);
+
+ /* Use recommended Vset bits from Efuse */
+ if (!abb->ldo_base) {
+ if (vset_mask)
+ dev_err(dev, "prop'%s':v=%d vst=%x LDO base?\n",
+ pname, *volt_table, vset_mask);
+ continue;
+ }
+ info->vset = efuse_val & vset_mask >> __ffs(vset_mask);
+ dev_dbg(dev, "[%d]v=%d vset=%x\n", i, *volt_table, info->vset);
+check_abb:
+ switch (info->opp_sel) {
+ case TI_ABB_NOMINAL_OPP:
+ case TI_ABB_FAST_OPP:
+ case TI_ABB_SLOW_OPP:
+ /* Valid values */
+ break;
+ default:
+ dev_err(dev, "%s:[%d]v=%d, ABB=%d is invalid! Abort!\n",
+ __func__, i, *volt_table, info->opp_sel);
+ return -EINVAL;
+ }
+ }
+
+ /* Setup the min/max voltage constraints from the supported list */
+ c->min_uV = min_uV;
+ c->max_uV = max_uV;
+
+ return 0;
+}
+
+static struct regulator_ops ti_abb_reg_ops = {
+ .list_voltage = regulator_list_voltage_table,
+
+ .set_voltage_sel = ti_abb_set_voltage_sel,
+ .get_voltage_sel = ti_abb_get_voltage_sel,
+};
+
+/* Default ABB block offsets, IF this changes in future, create new one */
+static const struct ti_abb_reg abb_regs_v1 = {
+ /* WARNING: registers are wrongly documented in TRM */
+ .setup_reg = 0x04,
+ .control_reg = 0x00,
+
+ .sr2_wtcnt_value_mask = (0xff << 8),
+ .fbb_sel_mask = (0x01 << 2),
+ .rbb_sel_mask = (0x01 << 1),
+ .sr2_en_mask = (0x01 << 0),
+
+ .opp_change_mask = (0x01 << 2),
+ .opp_sel_mask = (0x03 << 0),
+};
+
+static const struct ti_abb_reg abb_regs_v2 = {
+ .setup_reg = 0x00,
+ .control_reg = 0x04,
+
+ .sr2_wtcnt_value_mask = (0xff << 8),
+ .fbb_sel_mask = (0x01 << 2),
+ .rbb_sel_mask = (0x01 << 1),
+ .sr2_en_mask = (0x01 << 0),
+
+ .opp_change_mask = (0x01 << 2),
+ .opp_sel_mask = (0x03 << 0),
+};
+
+static const struct of_device_id ti_abb_of_match[] = {
+ {.compatible = "ti,abb-v1", .data = &abb_regs_v1},
+ {.compatible = "ti,abb-v2", .data = &abb_regs_v2},
+ { },
+};
+
+MODULE_DEVICE_TABLE(of, ti_abb_of_match);
+
+/**
+ * ti_abb_probe() - Initialize an ABB ldo instance
+ * @pdev: ABB platform device
+ *
+ * Initializes an individual ABB LDO for required Body-Bias. ABB is used to
+ * addional bias supply to SoC modules for power savings or mandatory stability
+ * configuration at certain Operating Performance Points(OPPs).
+ *
+ * Return: 0 on success or appropriate error value when fails
+ */
+static int ti_abb_probe(struct platform_device *pdev)
+{
+ struct device *dev = &pdev->dev;
+ const struct of_device_id *match;
+ struct resource *res;
+ struct ti_abb *abb;
+ struct regulator_init_data *initdata = NULL;
+ struct regulator_dev *rdev = NULL;
+ struct regulator_desc *desc;
+ struct regulation_constraints *c;
+ struct regulator_config config = { };
+ char *pname;
+ int ret = 0;
+
+ match = of_match_device(ti_abb_of_match, dev);
+ if (!match) {
+ /* We do not expect this to happen */
+ ret = -ENODEV;
+ dev_err(dev, "%s: Unable to match device\n", __func__);
+ goto err;
+ }
+ if (!match->data) {
+ ret = -EINVAL;
+ dev_err(dev, "%s: Bad data in match\n", __func__);
+ goto err;
+ }
+
+ abb = devm_kzalloc(dev, sizeof(struct ti_abb), GFP_KERNEL);
+ if (!abb) {
+ dev_err(dev, "%s: Unable to allocate ABB struct\n", __func__);
+ ret = -ENOMEM;
+ goto err;
+ }
+ abb->regs = match->data;
+
+ /* Map ABB resources */
+ pname = "base-address";
+ res = platform_get_resource_byname(pdev, IORESOURCE_MEM, pname);
+ if (!res) {
+ dev_err(dev, "Missing '%s' IO resource\n", pname);
+ ret = -ENODEV;
+ goto err;
+ }
+ abb->base = devm_ioremap_resource(dev, res);
+ if (IS_ERR(abb->base)) {
+ ret = PTR_ERR(abb->base);
+ goto err;
+ }
+
+ pname = "int-address";
+ res = platform_get_resource_byname(pdev, IORESOURCE_MEM, pname);
+ if (!res) {
+ dev_err(dev, "Missing '%s' IO resource\n", pname);
+ ret = -ENODEV;
+ goto err;
+ }
+ /*
+ * We may have shared interrupt register offsets which are
+ * write-1-to-clear between domains ensuring exclusivity.
+ */
+ abb->int_base = devm_ioremap_nocache(dev, res->start,
+ resource_size(res));
+ if (!abb->int_base) {
+ dev_err(dev, "Unable to map '%s'\n", pname);
+ ret = -ENOMEM;
+ goto err;
+ }
+
+ /* Map Optional resources */
+ pname = "efuse-address";
+ res = platform_get_resource_byname(pdev, IORESOURCE_MEM, pname);
+ if (!res) {
+ dev_dbg(dev, "Missing '%s' IO resource\n", pname);
+ ret = -ENODEV;
+ goto skip_opt;
+ }
+
+ /*
+ * We may have shared efuse register offsets which are read-only
+ * between domains
+ */
+ abb->efuse_base = devm_ioremap_nocache(dev, res->start,
+ resource_size(res));
+ if (!abb->efuse_base) {
+ dev_err(dev, "Unable to map '%s'\n", pname);
+ ret = -ENOMEM;
+ goto err;
+ }
+
+ pname = "ldo-address";
+ res = platform_get_resource_byname(pdev, IORESOURCE_MEM, pname);
+ if (!res) {
+ dev_dbg(dev, "Missing '%s' IO resource\n", pname);
+ ret = -ENODEV;
+ goto skip_opt;
+ }
+ abb->ldo_base = devm_ioremap_resource(dev, res);
+ if (IS_ERR(abb->ldo_base)) {
+ ret = PTR_ERR(abb->ldo_base);
+ goto err;
+ }
+
+ /* IF ldo_base is set, the following are mandatory */
+ pname = "ti,ldovbb-override-mask";
+ ret =
+ of_property_read_u32(pdev->dev.of_node, pname,
+ &abb->ldovbb_override_mask);
+ if (ret) {
+ dev_err(dev, "Missing '%s' (%d)\n", pname, ret);
+ goto err;
+ }
+ if (!abb->ldovbb_override_mask) {
+ dev_err(dev, "Invalid property:'%s' set as 0!\n", pname);
+ ret = -EINVAL;
+ goto err;
+ }
+
+ pname = "ti,ldovbb-vset-mask";
+ ret =
+ of_property_read_u32(pdev->dev.of_node, pname,
+ &abb->ldovbb_vset_mask);
+ if (ret) {
+ dev_err(dev, "Missing '%s' (%d)\n", pname, ret);
+ goto err;
+ }
+ if (!abb->ldovbb_vset_mask) {
+ dev_err(dev, "Invalid property:'%s' set as 0!\n", pname);
+ ret = -EINVAL;
+ goto err;
+ }
+
+skip_opt:
+ pname = "ti,tranxdone-status-mask";
+ ret =
+ of_property_read_u32(pdev->dev.of_node, pname,
+ &abb->txdone_mask);
+ if (ret) {
+ dev_err(dev, "Missing '%s' (%d)\n", pname, ret);
+ goto err;
+ }
+ if (!abb->txdone_mask) {
+ dev_err(dev, "Invalid property:'%s' set as 0!\n", pname);
+ ret = -EINVAL;
+ goto err;
+ }
+
+ initdata = of_get_regulator_init_data(dev, pdev->dev.of_node);
+ if (!initdata) {
+ ret = -ENOMEM;
+ dev_err(dev, "%s: Unable to alloc regulator init data\n",
+ __func__);
+ goto err;
+ }
+
+ /* init ABB opp_sel table */
+ ret = ti_abb_init_table(dev, abb, initdata);
+ if (ret)
+ goto err;
+
+ /* init ABB timing */
+ ret = ti_abb_init_timings(dev, abb);
+ if (ret)
+ goto err;
+
+ desc = &abb->rdesc;
+ desc->name = dev_name(dev);
+ desc->owner = THIS_MODULE;
+ desc->type = REGULATOR_VOLTAGE;
+ desc->ops = &ti_abb_reg_ops;
+
+ c = &initdata->constraints;
+ if (desc->n_voltages > 1)
+ c->valid_ops_mask |= REGULATOR_CHANGE_VOLTAGE;
+ c->always_on = true;
+
+ config.dev = dev;
+ config.init_data = initdata;
+ config.driver_data = abb;
+ config.of_node = pdev->dev.of_node;
+
+ rdev = regulator_register(desc, &config);
+ if (IS_ERR(rdev)) {
+ ret = PTR_ERR(rdev);
+ dev_err(dev, "%s: failed to register regulator(%d)\n",
+ __func__, ret);
+ goto err;
+ }
+ platform_set_drvdata(pdev, rdev);
+
+ /* Enable the ldo if not already done by bootloader */
+ ti_abb_rmw(abb->regs->sr2_en_mask, 1, abb->regs->setup_reg, abb->base);
+
+ return 0;
+
+err:
+ dev_err(dev, "%s: Failed to initialize(%d)\n", __func__, ret);
+ return ret;
+}
+
+/**
+ * ti_abb_remove() - cleanups
+ * @pdev: ABB platform device
+ *
+ * Return: 0
+ */
+static int ti_abb_remove(struct platform_device *pdev)
+{
+ struct regulator_dev *rdev = platform_get_drvdata(pdev);
+
+ regulator_unregister(rdev);
+ return 0;
+}
+
+MODULE_ALIAS("platform:ti_abb");
+
+static struct platform_driver ti_abb_driver = {
+ .probe = ti_abb_probe,
+ .remove = ti_abb_remove,
+ .driver = {
+ .name = "ti_abb",
+ .owner = THIS_MODULE,
+ .of_match_table = of_match_ptr(ti_abb_of_match),
+ },
+};
+module_platform_driver(ti_abb_driver);
+
+MODULE_DESCRIPTION("Texas Instruments ABB LDO regulator driver");
+MODULE_AUTHOR("Texas Instruments Inc.");
+MODULE_LICENSE("GPL v2");
int chip_id;
pdata = client->dev.platform_data;
- chip_id = id->driver_data;
if (client->dev.of_node) {
const struct of_device_id *match;
chip_id = (int)match->data;
if (!pdata)
pdata = of_get_tps62360_platform_data(&client->dev);
+ } else if (id) {
+ chip_id = id->driver_data;
+ } else {
+ dev_err(&client->dev, "No device tree match or id table match found\n");
+ return -ENODEV;
}
if (!pdata) {
return -ENODEV;
}
- tps->desc.name = id->name;
+ tps->desc.name = client->name;
tps->desc.id = 0;
tps->desc.ops = &tps62360_dcdc_ops;
tps->desc.type = REGULATOR_VOLTAGE;
for (i = 0; i < TPS65217_NUM_REGULATOR; i++)
regulator_unregister(tps->rdev[i]);
- platform_set_drvdata(pdev, NULL);
-
return 0;
}
if (drvdata->enabled)
regulator_disable(drvdata->regulator);
- platform_set_drvdata(pdev, NULL);
-
return 0;
}
struct wm831x_dcdc *dcdc = platform_get_drvdata(pdev);
struct wm831x *wm831x = dcdc->wm831x;
- platform_set_drvdata(pdev, NULL);
-
free_irq(wm831x_irq(wm831x, platform_get_irq_byname(pdev, "HC")),
dcdc);
free_irq(wm831x_irq(wm831x, platform_get_irq_byname(pdev, "UV")),
{
struct wm831x_dcdc *dcdc = platform_get_drvdata(pdev);
- platform_set_drvdata(pdev, NULL);
-
free_irq(wm831x_irq(dcdc->wm831x, platform_get_irq_byname(pdev, "UV")),
dcdc);
regulator_unregister(dcdc->regulator);
{
struct wm831x_dcdc *dcdc = platform_get_drvdata(pdev);
- platform_set_drvdata(pdev, NULL);
-
free_irq(wm831x_irq(dcdc->wm831x, platform_get_irq_byname(pdev, "UV")),
dcdc);
regulator_unregister(dcdc->regulator);
{
struct wm831x_dcdc *dcdc = platform_get_drvdata(pdev);
- platform_set_drvdata(pdev, NULL);
regulator_unregister(dcdc->regulator);
return 0;
{
struct wm831x_isink *isink = platform_get_drvdata(pdev);
- platform_set_drvdata(pdev, NULL);
-
free_irq(wm831x_irq(isink->wm831x, platform_get_irq(pdev, 0)), isink);
regulator_unregister(isink->regulator);
{
struct wm831x_ldo *ldo = platform_get_drvdata(pdev);
- platform_set_drvdata(pdev, NULL);
-
free_irq(wm831x_irq(ldo->wm831x,
platform_get_irq_byname(pdev, "UV")), ldo);
regulator_unregister(ldo->regulator);
{
struct regulator_dev *rdev = platform_get_drvdata(pdev);
- platform_set_drvdata(pdev, NULL);
regulator_unregister(rdev);
return 0;
{
struct wm8994_ldo *ldo = platform_get_drvdata(pdev);
- platform_set_drvdata(pdev, NULL);
-
regulator_unregister(ldo->regulator);
return 0;
MAX77693_PMIC_REG_END,
};
+/* MAX77693 CHG_CNFG_00 register */
+#define CHG_CNFG_00_CHG_MASK 0x1
+#define CHG_CNFG_00_BUCK_MASK 0x4
+
+/* MAX77693 CHG_CNFG_09 Register */
+#define CHG_CNFG_09_CHGIN_ILIM_MASK 0x7F
+
+/* MAX77693 CHG_CTRL Register */
+#define SAFEOUT_CTRL_SAFEOUT1_MASK 0x3
+#define SAFEOUT_CTRL_SAFEOUT2_MASK 0xC
+#define SAFEOUT_CTRL_ENSAFEOUT1_MASK 0x40
+#define SAFEOUT_CTRL_ENSAFEOUT2_MASK 0x80
+
/* Slave addr = 0x4A: MUIC */
enum max77693_muic_reg {
MAX77693_MUIC_REG_ID = 0x00,
#ifndef __LINUX_MFD_MAX77693_H
#define __LINUX_MFD_MAX77693_H
+/* MAX77686 regulator IDs */
+enum max77693_regulators {
+ MAX77693_ESAFEOUT1 = 0,
+ MAX77693_ESAFEOUT2,
+ MAX77693_CHARGER,
+ MAX77693_REG_MAX,
+};
+
+struct max77693_regulator_data {
+ int id;
+ struct regulator_init_data *initdata;
+ struct device_node *of_node;
+};
+
struct max77693_reg_data {
u8 addr;
u8 data;
struct max77693_platform_data {
int wakeup;
+ /* regulator data */
+ struct max77693_regulator_data *regulators;
+ int num_regulators;
+
/* muic data */
struct max77693_muic_platform_data *muic_data;
};
}
#endif
-/* AB8500 external regulator functions. */
-int ab8500_ext_regulator_init(struct platform_device *pdev);
-void ab8500_ext_regulator_exit(struct platform_device *pdev);
-
#endif
int regulator_list_voltage(struct regulator *regulator, unsigned selector);
int regulator_is_supported_voltage(struct regulator *regulator,
int min_uV, int max_uV);
+unsigned int regulator_get_linear_step(struct regulator *regulator);
int regulator_set_voltage(struct regulator *regulator, int min_uV, int max_uV);
int regulator_set_voltage_time(struct regulator *regulator,
int old_uV, int new_uV);
projects / karo-tx-linux.git / commitdiff