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Commit 295c08bc authored by Sascha Hauer's avatar Sascha Hauer Committed by Samuel Ortiz
Browse files

regulator: Add Freescale MC13783 driver 



This driver provides basic support for the voltage regulators
integrated into the Freescale MC13783 PMIC. It is currently
only possible to enable/disable outputs, not to actually
set the voltage.

Signed-off-by: default avatarSascha Hauer <s.hauer@pengutronix.de>
Signed-off-by: default avatarLiam Girdwood <lrg@slimlogic.co.uk>
Signed-off-by: default avatarSamuel Ortiz <sameo@linux.intel.com>
parent 8238addc

drivers/regulator/Kconfig

+8 −0
Original line number Diff line number Diff line
@@ -131,4 +131,12 @@ config REGULATOR_PCAP 
	 This driver provides support for the voltage regulators of the

	 PCAP2 PMIC.



config REGULATOR_MC13783

	tristate "Support regulators on Freescale MC13783 PMIC"

	depends on MFD_MC13783

	help

	  Say y here to support the regulators found on the Freescale MC13783

	  PMIC.



endif

drivers/regulator/Makefile

+1 −0
Original line number Diff line number Diff line
@@ -20,5 +20,6 @@ obj-$(CONFIG_REGULATOR_WM8400) += wm8400-regulator.o 
obj-$(CONFIG_REGULATOR_DA903X)	+= da903x.o

obj-$(CONFIG_REGULATOR_PCF50633) += pcf50633-regulator.o

obj-$(CONFIG_REGULATOR_PCAP) += pcap-regulator.o

obj-$(CONFIG_REGULATOR_MC13783) += mc13783.o



ccflags-$(CONFIG_REGULATOR_DEBUG) += -DDEBUG

drivers/regulator/mc13783.c

0 → 100644
+410 −0
Original line number Diff line number Diff line 
/*

 * Regulator Driver for Freescale MC13783 PMIC

 *

 * Copyright (C) 2008 Sascha Hauer, Pengutronix <s.hauer@pengutronix.de>

 *

 * 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.

 */



#include <linux/mfd/mc13783-private.h>

#include <linux/regulator/machine.h>

#include <linux/regulator/driver.h>

#include <linux/platform_device.h>

#include <linux/mfd/mc13783.h>

#include <linux/kernel.h>

#include <linux/init.h>

#include <linux/err.h>



struct mc13783_regulator {

	struct regulator_desc desc;

	int reg;

	int enable_bit;

};



static struct regulator_ops mc13783_regulator_ops;



static struct mc13783_regulator mc13783_regulators[] = {

	[MC13783_SW_SW3] = {

		.desc = {

			.name	= "SW_SW3",

			.ops	= &mc13783_regulator_ops,

			.type	= REGULATOR_VOLTAGE,

			.id	= MC13783_SW_SW3,

			.owner	= THIS_MODULE,

		},

		.reg = MC13783_REG_SWITCHERS_5,

		.enable_bit = MC13783_SWCTRL_SW3_EN,

	},

	[MC13783_SW_PLL] = {

		.desc = {

			.name	= "SW_PLL",

			.ops	= &mc13783_regulator_ops,

			.type	= REGULATOR_VOLTAGE,

			.id	= MC13783_SW_PLL,

			.owner	= THIS_MODULE,

		},

		.reg = MC13783_REG_SWITCHERS_4,

		.enable_bit = MC13783_SWCTRL_PLL_EN,

	},

	[MC13783_REGU_VAUDIO] = {

		.desc = {

			.name	= "REGU_VAUDIO",

			.ops	= &mc13783_regulator_ops,

			.type	= REGULATOR_VOLTAGE,

			.id	= MC13783_REGU_VAUDIO,

			.owner	= THIS_MODULE,

		},

		.reg = MC13783_REG_REGULATOR_MODE_0,

		.enable_bit = MC13783_REGCTRL_VAUDIO_EN,

	},

	[MC13783_REGU_VIOHI] = {

		.desc = {

			.name	= "REGU_VIOHI",

			.ops	= &mc13783_regulator_ops,

			.type	= REGULATOR_VOLTAGE,

			.id	= MC13783_REGU_VIOHI,

			.owner	= THIS_MODULE,

		},

		.reg = MC13783_REG_REGULATOR_MODE_0,

		.enable_bit = MC13783_REGCTRL_VIOHI_EN,

	},

	[MC13783_REGU_VIOLO] = {

		.desc = {

			.name	= "REGU_VIOLO",

			.ops	= &mc13783_regulator_ops,

			.type	= REGULATOR_VOLTAGE,

			.id	= MC13783_REGU_VIOLO,

			.owner	= THIS_MODULE,

		},

		.reg = MC13783_REG_REGULATOR_MODE_0,

		.enable_bit = MC13783_REGCTRL_VIOLO_EN,

	},

	[MC13783_REGU_VDIG] = {

		.desc = {

			.name	= "REGU_VDIG",

			.ops	= &mc13783_regulator_ops,

			.type	= REGULATOR_VOLTAGE,

			.id	= MC13783_REGU_VDIG,

			.owner	= THIS_MODULE,

		},

		.reg = MC13783_REG_REGULATOR_MODE_0,

		.enable_bit = MC13783_REGCTRL_VDIG_EN,

	},

	[MC13783_REGU_VGEN] = {

		.desc = {

			.name	= "REGU_VGEN",

			.ops	= &mc13783_regulator_ops,

			.type	= REGULATOR_VOLTAGE,

			.id	= MC13783_REGU_VGEN,

			.owner	= THIS_MODULE,

		},

		.reg = MC13783_REG_REGULATOR_MODE_0,

		.enable_bit = MC13783_REGCTRL_VGEN_EN,

	},

	[MC13783_REGU_VRFDIG] = {

		.desc = {

			.name	= "REGU_VRFDIG",

			.ops	= &mc13783_regulator_ops,

			.type	= REGULATOR_VOLTAGE,

			.id	= MC13783_REGU_VRFDIG,

			.owner	= THIS_MODULE,

		},

		.reg = MC13783_REG_REGULATOR_MODE_0,

		.enable_bit = MC13783_REGCTRL_VRFDIG_EN,

	},

	[MC13783_REGU_VRFREF] = {

		.desc = {

			.name	= "REGU_VRFREF",

			.ops	= &mc13783_regulator_ops,

			.type	= REGULATOR_VOLTAGE,

			.id	= MC13783_REGU_VRFREF,

			.owner	= THIS_MODULE,

		},

		.reg = MC13783_REG_REGULATOR_MODE_0,

		.enable_bit = MC13783_REGCTRL_VRFREF_EN,

	},

	[MC13783_REGU_VRFCP] = {

		.desc = {

			.name	= "REGU_VRFCP",

			.ops	= &mc13783_regulator_ops,

			.type	= REGULATOR_VOLTAGE,

			.id	= MC13783_REGU_VRFCP,

			.owner	= THIS_MODULE,

		},

		.reg = MC13783_REG_REGULATOR_MODE_0,

		.enable_bit = MC13783_REGCTRL_VRFCP_EN,

	},

	[MC13783_REGU_VSIM] = {

		.desc = {

			.name	= "REGU_VSIM",

			.ops	= &mc13783_regulator_ops,

			.type	= REGULATOR_VOLTAGE,

			.id	= MC13783_REGU_VSIM,

			.owner	= THIS_MODULE,

		},

		.reg = MC13783_REG_REGULATOR_MODE_1,

		.enable_bit = MC13783_REGCTRL_VSIM_EN,

	},

	[MC13783_REGU_VESIM] = {

		.desc = {

			.name	= "REGU_VESIM",

			.ops	= &mc13783_regulator_ops,

			.type	= REGULATOR_VOLTAGE,

			.id	= MC13783_REGU_VESIM,

			.owner	= THIS_MODULE,

		},

		.reg = MC13783_REG_REGULATOR_MODE_1,

		.enable_bit = MC13783_REGCTRL_VESIM_EN,

	},

	[MC13783_REGU_VCAM] = {

		.desc = {

			.name	= "REGU_VCAM",

			.ops	= &mc13783_regulator_ops,

			.type	= REGULATOR_VOLTAGE,

			.id	= MC13783_REGU_VCAM,

			.owner	= THIS_MODULE,

		},

		.reg = MC13783_REG_REGULATOR_MODE_1,

		.enable_bit = MC13783_REGCTRL_VCAM_EN,

	},

	[MC13783_REGU_VRFBG] = {

		.desc = {

			.name	= "REGU_VRFBG",

			.ops	= &mc13783_regulator_ops,

			.type	= REGULATOR_VOLTAGE,

			.id	= MC13783_REGU_VRFBG,

			.owner	= THIS_MODULE,

		},

		.reg = MC13783_REG_REGULATOR_MODE_1,

		.enable_bit = MC13783_REGCTRL_VRFBG_EN,

	},

	[MC13783_REGU_VVIB] = {

		.desc = {

			.name	= "REGU_VVIB",

			.ops	= &mc13783_regulator_ops,

			.type	= REGULATOR_VOLTAGE,

			.id	= MC13783_REGU_VVIB,

			.owner	= THIS_MODULE,

		},

		.reg = MC13783_REG_REGULATOR_MODE_1,

		.enable_bit = MC13783_REGCTRL_VVIB_EN,

	},

	[MC13783_REGU_VRF1] = {

		.desc = {

			.name	= "REGU_VRF1",

			.ops	= &mc13783_regulator_ops,

			.type	= REGULATOR_VOLTAGE,

			.id	= MC13783_REGU_VRF1,

			.owner	= THIS_MODULE,

		},

		.reg = MC13783_REG_REGULATOR_MODE_1,

		.enable_bit = MC13783_REGCTRL_VRF1_EN,

	},

	[MC13783_REGU_VRF2] = {

		.desc = {

			.name	= "REGU_VRF2",

			.ops	= &mc13783_regulator_ops,

			.type	= REGULATOR_VOLTAGE,

			.id	= MC13783_REGU_VRF2,

			.owner	= THIS_MODULE,

		},

		.reg = MC13783_REG_REGULATOR_MODE_1,

		.enable_bit = MC13783_REGCTRL_VRF2_EN,

	},

	[MC13783_REGU_VMMC1] = {

		.desc = {

			.name	= "REGU_VMMC1",

			.ops	= &mc13783_regulator_ops,

			.type	= REGULATOR_VOLTAGE,

			.id	= MC13783_REGU_VMMC1,

			.owner	= THIS_MODULE,

		},

		.reg = MC13783_REG_REGULATOR_MODE_1,

		.enable_bit = MC13783_REGCTRL_VMMC1_EN,

	},

	[MC13783_REGU_VMMC2] = {

		.desc = {

			.name	= "REGU_VMMC2",

			.ops	= &mc13783_regulator_ops,

			.type	= REGULATOR_VOLTAGE,

			.id	= MC13783_REGU_VMMC2,

			.owner	= THIS_MODULE,

		},

		.reg = MC13783_REG_REGULATOR_MODE_1,

		.enable_bit = MC13783_REGCTRL_VMMC2_EN,

	},

	[MC13783_REGU_GPO1] = {

		.desc = {

			.name	= "REGU_GPO1",

			.ops	= &mc13783_regulator_ops,

			.type	= REGULATOR_VOLTAGE,

			.id	= MC13783_REGU_GPO1,

			.owner	= THIS_MODULE,

		},

		.reg = MC13783_REG_POWER_MISCELLANEOUS,

		.enable_bit = MC13783_REGCTRL_GPO1_EN,

	},

	[MC13783_REGU_GPO2] = {

		.desc = {

			.name	= "REGU_GPO2",

			.ops	= &mc13783_regulator_ops,

			.type	= REGULATOR_VOLTAGE,

			.id	= MC13783_REGU_GPO2,

			.owner	= THIS_MODULE,

		},

		.reg = MC13783_REG_POWER_MISCELLANEOUS,

		.enable_bit = MC13783_REGCTRL_GPO2_EN,

	},

	[MC13783_REGU_GPO3] = {

		.desc = {

			.name	= "REGU_GPO3",

			.ops	= &mc13783_regulator_ops,

			.type	= REGULATOR_VOLTAGE,

			.id	= MC13783_REGU_GPO3,

			.owner	= THIS_MODULE,

		},

		.reg = MC13783_REG_POWER_MISCELLANEOUS,

		.enable_bit = MC13783_REGCTRL_GPO3_EN,

	},

	[MC13783_REGU_GPO4] = {

		.desc = {

			.name	= "REGU_GPO4",

			.ops	= &mc13783_regulator_ops,

			.type	= REGULATOR_VOLTAGE,

			.id	= MC13783_REGU_GPO4,

			.owner	= THIS_MODULE,

		},

		.reg = MC13783_REG_POWER_MISCELLANEOUS,

		.enable_bit = MC13783_REGCTRL_GPO4_EN,

	},

};



struct mc13783_priv {

	struct regulator_desc desc[ARRAY_SIZE(mc13783_regulators)];

	struct mc13783 *mc13783;

	struct regulator_dev *regulators[0];

};



static int mc13783_enable(struct regulator_dev *rdev)

{

	struct mc13783_priv *priv = rdev_get_drvdata(rdev);

	int id = rdev_get_id(rdev);



	dev_dbg(rdev_get_dev(rdev), "%s id: %d\n", __func__, id);



	return mc13783_set_bits(priv->mc13783, mc13783_regulators[id].reg,

			mc13783_regulators[id].enable_bit,

			mc13783_regulators[id].enable_bit);

}



static int mc13783_disable(struct regulator_dev *rdev)

{

	struct mc13783_priv *priv = rdev_get_drvdata(rdev);

	int id = rdev_get_id(rdev);



	dev_dbg(rdev_get_dev(rdev), "%s id: %d\n", __func__, id);



	return mc13783_set_bits(priv->mc13783, mc13783_regulators[id].reg,

			mc13783_regulators[id].enable_bit, 0);

}



static int mc13783_is_enabled(struct regulator_dev *rdev)

{

	struct mc13783_priv *priv = rdev_get_drvdata(rdev);

	int ret, id = rdev_get_id(rdev);

	unsigned int val;



	ret = mc13783_reg_read(priv->mc13783, mc13783_regulators[id].reg, &val);

	if (ret)

		return ret;



	return (val & mc13783_regulators[id].enable_bit) != 0;

}



static struct regulator_ops mc13783_regulator_ops = {

	.enable		= mc13783_enable,

	.disable	= mc13783_disable,

	.is_enabled	= mc13783_is_enabled,

};



static int __devinit mc13783_regulator_probe(struct platform_device *pdev)

{

	struct mc13783_priv *priv;

	struct mc13783 *mc13783 = dev_get_drvdata(pdev->dev.parent);

	struct mc13783_regulator_init_data *init_data;

	int i, ret;



	dev_dbg(&pdev->dev, "mc13783_regulator_probe id %d\n", pdev->id);



	priv = kzalloc(sizeof(*priv) + mc13783->num_regulators * sizeof(void *),

			GFP_KERNEL);

	if (!priv)

		return -ENOMEM;



	priv->mc13783 = mc13783;



	for (i = 0; i < mc13783->num_regulators; i++) {

		init_data = &mc13783->regulators[i];

		priv->regulators[i] = regulator_register(

				&mc13783_regulators[init_data->id].desc,

				&pdev->dev, init_data->init_data, priv);



		if (IS_ERR(priv->regulators[i])) {

			dev_err(&pdev->dev, "failed to register regulator %s\n",

				mc13783_regulators[i].desc.name);

			ret = PTR_ERR(priv->regulators[i]);

			goto err;

		}

	}



	platform_set_drvdata(pdev, priv);



	return 0;

err:

	while (--i >= 0)

		regulator_unregister(priv->regulators[i]);



	kfree(priv);



	return ret;

}



static int __devexit mc13783_regulator_remove(struct platform_device *pdev)

{

	struct mc13783_priv *priv = platform_get_drvdata(pdev);

	struct mc13783 *mc13783 = priv->mc13783;

	int i;



	for (i = 0; i < mc13783->num_regulators; i++)

		regulator_unregister(priv->regulators[i]);



	return 0;

}



static struct platform_driver mc13783_regulator_driver = {

	.driver	= {

		.name	= "mc13783-regulator",

		.owner	= THIS_MODULE,

	},

	.remove		= __devexit_p(mc13783_regulator_remove),

};



static int __init mc13783_regulator_init(void)

{

	return platform_driver_probe(&mc13783_regulator_driver,

			mc13783_regulator_probe);

}

subsys_initcall(mc13783_regulator_init);



static void __exit mc13783_regulator_exit(void)

{

	platform_driver_unregister(&mc13783_regulator_driver);

}

module_exit(mc13783_regulator_exit);



MODULE_LICENSE("GPL");

MODULE_AUTHOR("Sascha Hauer <s.hauer@pengutronix.de");

MODULE_DESCRIPTION("Regulator Driver for Freescale MC13783 PMIC");

MODULE_ALIAS("platform:mc13783-regulator");