Commit 91c2ff77 authored by Linus Torvalds's avatar Linus Torvalds
Browse files

Merge tag 'regulator-v3.17' of git://git.kernel.org/pub/scm/linux/kernel/git/broonie/regulator 

Pull regulator updates from Mark Brown:
 "A couple of nice new features this month, the ability to map
  regulators in order to allow voltage control by external coprocessors
  is something people have been asking for for a long time.

   - improved support for switch only "regulators", allowing current
     state to be read from the parent regulator but no setting.

   - support for obtaining the register access method used to set
     voltages, for use in systems which can offload control of this to a
     coprocessor (typically for DVFS).

   - support for Active-Semi AC8846, Dialog DA9211 and Texas Instruments
     TPS65917"

* tag 'regulator-v3.17' of git://git.kernel.org/pub/scm/linux/kernel/git/broonie/regulator: (58 commits)
  regulator: act8865: fix build when OF is not enabled
  regulator: act8865: add act8846 to DT binding documentation
  regulator: act8865: add support for act8846
  regulator: act8865: prepare support for other act88xx devices
  regulator: act8865: set correct number of regulators in pdata
  regulator: act8865: Remove error variable in act8865_pmic_probe
  regulator: act8865: fix parsing of platform data
  regulator: tps65090: Set voltage for fixed regulators
  regulator: core: Allow to get voltage count and list from parent
  regulator: core: Get voltage from parent if not available
  regulator: Add missing statics and inlines for stub functions
  regulator: lp872x: Don't set constraints within the regulator driver
  regmap: Fix return code for stub regmap_get_device()
  regulator: s2mps11: Update module description and Kconfig to add S2MPU02 support
  regulator: Add helpers for low-level register access
  regmap: Allow regmap_get_device() to be used by modules
  regmap: Add regmap_get_device
  regulator: da9211: Remove unnecessary devm_regulator_unregister() calls
  regulator: Add DT bindings for tps65218 PMIC regulators.
  regulator: da9211: new regulator driver
  ...
parents 1325b655 f955c8ba

Documentation/devicetree/bindings/mfd/palmas.txt

+2 −0
Original line number Diff line number Diff line
@@ -6,6 +6,7 @@ twl6037 (palmas) 
tps65913 (palmas)

tps65914 (palmas)

tps659038

tps65917



Required properties:

- compatible : Should be from the list
@@ -16,6 +17,7 @@ Required properties: 
  ti,tps65914

  ti,tps80036

  ti,tps659038

  ti,tps65917

and also the generic series names

  ti,palmas

- interrupt-controller : palmas has its own internal IRQs

Documentation/devicetree/bindings/regulator/act8865-regulator.txt

+5 −2
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ACT8865 regulator

ACT88xx regulators

-------------------



Required properties:

- compatible: "active-semi,act8865"

- compatible: "active-semi,act8846" or "active-semi,act8865"

- reg: I2C slave address



Any standard regulator properties can be used to configure the single regulator.



The valid names for regulators are:

	- for act8846:

	REG1, REG2, REG3, REG4, REG5, REG6, REG7, REG8, REG9, REG10, REG11, REG12

	- for act8865:

	DCDC_REG1, DCDC_REG2, DCDC_REG3, LDO_REG1, LDO_REG2, LDO_REG3, LDO_REG4.



Example:

Documentation/devicetree/bindings/regulator/palmas-pmic.txt

+1 −0
Original line number Diff line number Diff line
@@ -7,6 +7,7 @@ Required properties: 
  ti,twl6037-pmic

  ti,tps65913-pmic

  ti,tps65914-pmic

  ti,tps65917-pmic

and also the generic series names

  ti,palmas-pmic

- interrupt-parent : The parent interrupt controller which is palmas.

Documentation/devicetree/bindings/regulator/tps65218.txt

0 → 100644
+23 −0
Original line number Diff line number Diff line 
TPS65218 family of regulators



Required properties:

For tps65218 regulators/LDOs

- compatible:

  - "ti,tps65218-dcdc1" for DCDC1

  - "ti,tps65218-dcdc2" for DCDC2

  - "ti,tps65218-dcdc3" for DCDC3

  - "ti,tps65218-dcdc4" for DCDC4

  - "ti,tps65218-dcdc5" for DCDC5

  - "ti,tps65218-dcdc6" for DCDC6

  - "ti,tps65218-ldo1" for LDO1



Optional properties:

- Any optional property defined in bindings/regulator/regulator.txt



Example:



	xyz: regulator@0 {

		compatible = "ti,tps65218-dcdc1";

		regulator-min-microvolt  = <1000000>;

		regulator-max-microvolt  = <3000000>;

	};

Documentation/power/regulator/consumer.txt

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Original line number Diff line number Diff line
@@ -180,3 +180,38 @@ int regulator_unregister_notifier(struct regulator *regulator, 


Regulators use the kernel notifier framework to send event to their interested

consumers.



7. Regulator Direct Register Access

===================================

Some kinds of power management hardware or firmware are designed such that

they need to do low-level hardware access to regulators, with no involvement

from the kernel. Examples of such devices are:



- clocksource with a voltage-controlled oscillator and control logic to change

  the supply voltage over I2C to achieve a desired output clock rate

- thermal management firmware that can issue an arbitrary I2C transaction to

  perform system poweroff during overtemperature conditions



To set up such a device/firmware, various parameters like I2C address of the

regulator, addresses of various regulator registers etc. need to be configured

to it. The regulator framework provides the following helpers for querying

these details.



Bus-specific details, like I2C addresses or transfer rates are handled by the

regmap framework. To get the regulator's regmap (if supported), use :-



struct regmap *regulator_get_regmap(struct regulator *regulator);



To obtain the hardware register offset and bitmask for the regulator's voltage

selector register, use :-



int regulator_get_hardware_vsel_register(struct regulator *regulator,

					 unsigned *vsel_reg,

					 unsigned *vsel_mask);



To convert a regulator framework voltage selector code (used by

regulator_list_voltage) to a hardware-specific voltage selector that can be

directly written to the voltage selector register, use :-



int regulator_list_hardware_vsel(struct regulator *regulator,

				 unsigned selector);

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