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Unverified Commit 90bc8ac2 authored by Claudiu Beznea's avatar Claudiu Beznea Committed by Mark Brown
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regulator: act8945a-regulator: unlock expert registers 

Unlock expert registers for act8945a.
This is based on orginal work of Boris Brezillon at [1].

[1] https://www.spinics.net/lists/kernel/msg2942960.html



Signed-off-by: default avatarClaudiu Beznea <claudiu.beznea@microchip.com>
Signed-off-by: default avatarMark Brown <broonie@kernel.org>
parent f306d760

drivers/regulator/act8945a-regulator.c

+12 −1
Original line number Diff line number Diff line
@@ -15,6 +15,7 @@ 
#include <linux/module.h>

#include <linux/of_device.h>

#include <linux/platform_device.h>

#include <linux/regmap.h>

#include <linux/regulator/driver.h>

#include <linux/regulator/machine.h>
@@ -23,6 +24,7 @@ 
 */

#define ACT8945A_SYS_MODE	0x00

#define ACT8945A_SYS_CTRL	0x01

#define ACT8945A_SYS_UNLK_REGS	0x0b

#define ACT8945A_DCDC1_VSET1	0x20

#define ACT8945A_DCDC1_VSET2	0x21

#define ACT8945A_DCDC1_CTRL	0x22
@@ -123,9 +125,17 @@ static int act8945a_pmic_probe(struct platform_device *pdev) 
	struct regulator_config config = { };

	const struct regulator_desc *regulators;

	struct regulator_dev *rdev;

	struct regmap *regmap;

	int i, num_regulators;

	bool voltage_select;



	regmap = dev_get_regmap(pdev->dev.parent, NULL);

	if (!regmap) {

		dev_err(&pdev->dev,

			"could not retrieve regmap from parent device\n");

		return -EINVAL;

	}



	voltage_select = of_property_read_bool(pdev->dev.parent->of_node,

					       "active-semi,vsel-high");
@@ -149,7 +159,8 @@ static int act8945a_pmic_probe(struct platform_device *pdev) 
		}

	}



	return 0;

	/* Unlock expert registers. */

	return regmap_write(regmap, ACT8945A_SYS_UNLK_REGS, 0xef);

}



static struct platform_driver act8945a_pmic_driver = {