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linux/drivers/regulator/mc13783-regulator.c
Andres Salomon 4ec1b54c4d mfd: mfd_cell is now implicitly available to mc13xxx drivers 
The cell's platform_data is now accessed with a helper function;
change clients to use that, and remove the now-unused data_size.

Note that mfd-core no longer makes a copy of platform_data, but the
mc13xxx-core driver creates the pdata structures on the stack.  In
order to get around that, the various ARM mach types that set the
pdata have been changed to hold the variable in static (global) memory.
Also note that __initdata references in aforementioned pdata structs
have been dropped.

Signed-off-by: Andres Salomon <dilinger@queued.net>
Signed-off-by: Samuel Ortiz <sameo@linux.intel.com>
2011-03-23 10:41:54 +01:00

421 lines
13 KiB
C
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/*
* Regulator Driver for Freescale MC13783 PMIC
*
* Copyright 2010 Yong Shen <yong.shen@linaro.org>
* Copyright (C) 2008 Sascha Hauer, Pengutronix <s.hauer@pengutronix.de>
* Copyright 2009 Alberto Panizzo <maramaopercheseimorto@gmail.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.
*/
#include <linux/mfd/mc13783.h>
#include <linux/regulator/machine.h>
#include <linux/regulator/driver.h>
#include <linux/platform_device.h>
#include <linux/kernel.h>
#include <linux/mfd/core.h>
#include <linux/slab.h>
#include <linux/init.h>
#include <linux/err.h>
#include "mc13xxx.h"
#define MC13783_REG_SWITCHERS5 29
#define MC13783_REG_SWITCHERS5_SW3EN (1 << 20)
#define MC13783_REG_SWITCHERS5_SW3VSEL 18
#define MC13783_REG_SWITCHERS5_SW3VSEL_M (3 << 18)
#define MC13783_REG_REGULATORSETTING0 30
#define MC13783_REG_REGULATORSETTING0_VIOLOVSEL 2
#define MC13783_REG_REGULATORSETTING0_VDIGVSEL 4
#define MC13783_REG_REGULATORSETTING0_VGENVSEL 6
#define MC13783_REG_REGULATORSETTING0_VRFDIGVSEL 9
#define MC13783_REG_REGULATORSETTING0_VRFREFVSEL 11
#define MC13783_REG_REGULATORSETTING0_VRFCPVSEL 13
#define MC13783_REG_REGULATORSETTING0_VSIMVSEL 14
#define MC13783_REG_REGULATORSETTING0_VESIMVSEL 15
#define MC13783_REG_REGULATORSETTING0_VCAMVSEL 16
#define MC13783_REG_REGULATORSETTING0_VIOLOVSEL_M (3 << 2)
#define MC13783_REG_REGULATORSETTING0_VDIGVSEL_M (3 << 4)
#define MC13783_REG_REGULATORSETTING0_VGENVSEL_M (7 << 6)
#define MC13783_REG_REGULATORSETTING0_VRFDIGVSEL_M (3 << 9)
#define MC13783_REG_REGULATORSETTING0_VRFREFVSEL_M (3 << 11)
#define MC13783_REG_REGULATORSETTING0_VRFCPVSEL_M (1 << 13)
#define MC13783_REG_REGULATORSETTING0_VSIMVSEL_M (1 << 14)
#define MC13783_REG_REGULATORSETTING0_VESIMVSEL_M (1 << 15)
#define MC13783_REG_REGULATORSETTING0_VCAMVSEL_M (7 << 16)
#define MC13783_REG_REGULATORSETTING1 31
#define MC13783_REG_REGULATORSETTING1_VVIBVSEL 0
#define MC13783_REG_REGULATORSETTING1_VRF1VSEL 2
#define MC13783_REG_REGULATORSETTING1_VRF2VSEL 4
#define MC13783_REG_REGULATORSETTING1_VMMC1VSEL 6
#define MC13783_REG_REGULATORSETTING1_VMMC2VSEL 9
#define MC13783_REG_REGULATORSETTING1_VVIBVSEL_M (3 << 0)
#define MC13783_REG_REGULATORSETTING1_VRF1VSEL_M (3 << 2)
#define MC13783_REG_REGULATORSETTING1_VRF2VSEL_M (3 << 4)
#define MC13783_REG_REGULATORSETTING1_VMMC1VSEL_M (7 << 6)
#define MC13783_REG_REGULATORSETTING1_VMMC2VSEL_M (7 << 9)
#define MC13783_REG_REGULATORMODE0 32
#define MC13783_REG_REGULATORMODE0_VAUDIOEN (1 << 0)
#define MC13783_REG_REGULATORMODE0_VIOHIEN (1 << 3)
#define MC13783_REG_REGULATORMODE0_VIOLOEN (1 << 6)
#define MC13783_REG_REGULATORMODE0_VDIGEN (1 << 9)
#define MC13783_REG_REGULATORMODE0_VGENEN (1 << 12)
#define MC13783_REG_REGULATORMODE0_VRFDIGEN (1 << 15)
#define MC13783_REG_REGULATORMODE0_VRFREFEN (1 << 18)
#define MC13783_REG_REGULATORMODE0_VRFCPEN (1 << 21)
#define MC13783_REG_REGULATORMODE1 33
#define MC13783_REG_REGULATORMODE1_VSIMEN (1 << 0)
#define MC13783_REG_REGULATORMODE1_VESIMEN (1 << 3)
#define MC13783_REG_REGULATORMODE1_VCAMEN (1 << 6)
#define MC13783_REG_REGULATORMODE1_VRFBGEN (1 << 9)
#define MC13783_REG_REGULATORMODE1_VVIBEN (1 << 11)
#define MC13783_REG_REGULATORMODE1_VRF1EN (1 << 12)
#define MC13783_REG_REGULATORMODE1_VRF2EN (1 << 15)
#define MC13783_REG_REGULATORMODE1_VMMC1EN (1 << 18)
#define MC13783_REG_REGULATORMODE1_VMMC2EN (1 << 21)
#define MC13783_REG_POWERMISC 34
#define MC13783_REG_POWERMISC_GPO1EN (1 << 6)
#define MC13783_REG_POWERMISC_GPO2EN (1 << 8)
#define MC13783_REG_POWERMISC_GPO3EN (1 << 10)
#define MC13783_REG_POWERMISC_GPO4EN (1 << 12)
#define MC13783_REG_POWERMISC_PWGT1SPIEN (1 << 15)
#define MC13783_REG_POWERMISC_PWGT2SPIEN (1 << 16)
#define MC13783_REG_POWERMISC_PWGTSPI_M (3 << 15)
/* Voltage Values */
static const int mc13783_sw3_val[] = {
5000000, 5000000, 5000000, 5500000,
};
static const int mc13783_vaudio_val[] = {
2775000,
};
static const int mc13783_viohi_val[] = {
2775000,
};
static const int mc13783_violo_val[] = {
1200000, 1300000, 1500000, 1800000,
};
static const int mc13783_vdig_val[] = {
1200000, 1300000, 1500000, 1800000,
};
static const int mc13783_vgen_val[] = {
1200000, 1300000, 1500000, 1800000,
1100000, 2000000, 2775000, 2400000,
};
static const int mc13783_vrfdig_val[] = {
1200000, 1500000, 1800000, 1875000,
};
static const int mc13783_vrfref_val[] = {
2475000, 2600000, 2700000, 2775000,
};
static const int mc13783_vrfcp_val[] = {
2700000, 2775000,
};
static const int mc13783_vsim_val[] = {
1800000, 2900000, 3000000,
};
static const int mc13783_vesim_val[] = {
1800000, 2900000,
};
static const int mc13783_vcam_val[] = {
1500000, 1800000, 2500000, 2550000,
2600000, 2750000, 2800000, 3000000,
};
static const int mc13783_vrfbg_val[] = {
1250000,
};
static const int mc13783_vvib_val[] = {
1300000, 1800000, 2000000, 3000000,
};
static const int mc13783_vmmc_val[] = {
1600000, 1800000, 2000000, 2600000,
2700000, 2800000, 2900000, 3000000,
};
static const int mc13783_vrf_val[] = {
1500000, 1875000, 2700000, 2775000,
};
static const int mc13783_gpo_val[] = {
3100000,
};
static const int mc13783_pwgtdrv_val[] = {
5500000,
};
static struct regulator_ops mc13783_gpo_regulator_ops;
#define MC13783_DEFINE(prefix, name, reg, vsel_reg, voltages) \
MC13xxx_DEFINE(MC13783_REG_, name, reg, vsel_reg, voltages, \
mc13xxx_regulator_ops)
#define MC13783_FIXED_DEFINE(prefix, name, reg, voltages) \
MC13xxx_FIXED_DEFINE(MC13783_REG_, name, reg, voltages, \
mc13xxx_fixed_regulator_ops)
#define MC13783_GPO_DEFINE(prefix, name, reg, voltages) \
MC13xxx_GPO_DEFINE(MC13783_REG_, name, reg, voltages, \
mc13783_gpo_regulator_ops)
#define MC13783_DEFINE_SW(_name, _reg, _vsel_reg, _voltages) \
MC13783_DEFINE(REG, _name, _reg, _vsel_reg, _voltages)
#define MC13783_DEFINE_REGU(_name, _reg, _vsel_reg, _voltages) \
MC13783_DEFINE(REG, _name, _reg, _vsel_reg, _voltages)
static struct mc13xxx_regulator mc13783_regulators[] = {
MC13783_DEFINE_SW(SW3, SWITCHERS5, SWITCHERS5, mc13783_sw3_val),
MC13783_FIXED_DEFINE(REG, VAUDIO, REGULATORMODE0, mc13783_vaudio_val),
MC13783_FIXED_DEFINE(REG, VIOHI, REGULATORMODE0, mc13783_viohi_val),
MC13783_DEFINE_REGU(VIOLO, REGULATORMODE0, REGULATORSETTING0, \
mc13783_violo_val),
MC13783_DEFINE_REGU(VDIG, REGULATORMODE0, REGULATORSETTING0, \
mc13783_vdig_val),
MC13783_DEFINE_REGU(VGEN, REGULATORMODE0, REGULATORSETTING0, \
mc13783_vgen_val),
MC13783_DEFINE_REGU(VRFDIG, REGULATORMODE0, REGULATORSETTING0, \
mc13783_vrfdig_val),
MC13783_DEFINE_REGU(VRFREF, REGULATORMODE0, REGULATORSETTING0, \
mc13783_vrfref_val),
MC13783_DEFINE_REGU(VRFCP, REGULATORMODE0, REGULATORSETTING0, \
mc13783_vrfcp_val),
MC13783_DEFINE_REGU(VSIM, REGULATORMODE1, REGULATORSETTING0, \
mc13783_vsim_val),
MC13783_DEFINE_REGU(VESIM, REGULATORMODE1, REGULATORSETTING0, \
mc13783_vesim_val),
MC13783_DEFINE_REGU(VCAM, REGULATORMODE1, REGULATORSETTING0, \
mc13783_vcam_val),
MC13783_FIXED_DEFINE(REG, VRFBG, REGULATORMODE1, mc13783_vrfbg_val),
MC13783_DEFINE_REGU(VVIB, REGULATORMODE1, REGULATORSETTING1, \
mc13783_vvib_val),
MC13783_DEFINE_REGU(VRF1, REGULATORMODE1, REGULATORSETTING1, \
mc13783_vrf_val),
MC13783_DEFINE_REGU(VRF2, REGULATORMODE1, REGULATORSETTING1, \
mc13783_vrf_val),
MC13783_DEFINE_REGU(VMMC1, REGULATORMODE1, REGULATORSETTING1, \
mc13783_vmmc_val),
MC13783_DEFINE_REGU(VMMC2, REGULATORMODE1, REGULATORSETTING1, \
mc13783_vmmc_val),
MC13783_GPO_DEFINE(REG, GPO1, POWERMISC, mc13783_gpo_val),
MC13783_GPO_DEFINE(REG, GPO2, POWERMISC, mc13783_gpo_val),
MC13783_GPO_DEFINE(REG, GPO3, POWERMISC, mc13783_gpo_val),
MC13783_GPO_DEFINE(REG, GPO4, POWERMISC, mc13783_gpo_val),
MC13783_GPO_DEFINE(REG, PWGT1SPI, POWERMISC, mc13783_pwgtdrv_val),
MC13783_GPO_DEFINE(REG, PWGT2SPI, POWERMISC, mc13783_pwgtdrv_val),
};
static int mc13783_powermisc_rmw(struct mc13xxx_regulator_priv *priv, u32 mask,
u32 val)
{
struct mc13xxx *mc13783 = priv->mc13xxx;
int ret;
u32 valread;
BUG_ON(val & ~mask);
ret = mc13xxx_reg_read(mc13783, MC13783_REG_POWERMISC, &valread);
if (ret)
return ret;
/* Update the stored state for Power Gates. */
priv->powermisc_pwgt_state =
(priv->powermisc_pwgt_state & ~mask) | val;
priv->powermisc_pwgt_state &= MC13783_REG_POWERMISC_PWGTSPI_M;
/* Construct the new register value */
valread = (valread & ~mask) | val;
/* Overwrite the PWGTxEN with the stored version */
valread = (valread & ~MC13783_REG_POWERMISC_PWGTSPI_M) |
priv->powermisc_pwgt_state;
return mc13xxx_reg_write(mc13783, MC13783_REG_POWERMISC, valread);
}
static int mc13783_gpo_regulator_enable(struct regulator_dev *rdev)
{
struct mc13xxx_regulator_priv *priv = rdev_get_drvdata(rdev);
struct mc13xxx_regulator *mc13xxx_regulators = priv->mc13xxx_regulators;
int id = rdev_get_id(rdev);
int ret;
u32 en_val = mc13xxx_regulators[id].enable_bit;
dev_dbg(rdev_get_dev(rdev), "%s id: %d\n", __func__, id);
/* Power Gate enable value is 0 */
if (id == MC13783_REG_PWGT1SPI ||
id == MC13783_REG_PWGT2SPI)
en_val = 0;
mc13xxx_lock(priv->mc13xxx);
ret = mc13783_powermisc_rmw(priv, mc13xxx_regulators[id].enable_bit,
en_val);
mc13xxx_unlock(priv->mc13xxx);
return ret;
}
static int mc13783_gpo_regulator_disable(struct regulator_dev *rdev)
{
struct mc13xxx_regulator_priv *priv = rdev_get_drvdata(rdev);
struct mc13xxx_regulator *mc13xxx_regulators = priv->mc13xxx_regulators;
int id = rdev_get_id(rdev);
int ret;
u32 dis_val = 0;
dev_dbg(rdev_get_dev(rdev), "%s id: %d\n", __func__, id);
/* Power Gate disable value is 1 */
if (id == MC13783_REG_PWGT1SPI ||
id == MC13783_REG_PWGT2SPI)
dis_val = mc13xxx_regulators[id].enable_bit;
mc13xxx_lock(priv->mc13xxx);
ret = mc13783_powermisc_rmw(priv, mc13xxx_regulators[id].enable_bit,
dis_val);
mc13xxx_unlock(priv->mc13xxx);
return ret;
}
static int mc13783_gpo_regulator_is_enabled(struct regulator_dev *rdev)
{
struct mc13xxx_regulator_priv *priv = rdev_get_drvdata(rdev);
struct mc13xxx_regulator *mc13xxx_regulators = priv->mc13xxx_regulators;
int ret, id = rdev_get_id(rdev);
unsigned int val;
mc13xxx_lock(priv->mc13xxx);
ret = mc13xxx_reg_read(priv->mc13xxx, mc13xxx_regulators[id].reg, &val);
mc13xxx_unlock(priv->mc13xxx);
if (ret)
return ret;
/* Power Gates state is stored in powermisc_pwgt_state
* where the meaning of bits is negated */
val = (val & ~MC13783_REG_POWERMISC_PWGTSPI_M) |
(priv->powermisc_pwgt_state ^ MC13783_REG_POWERMISC_PWGTSPI_M);
return (val & mc13xxx_regulators[id].enable_bit) != 0;
}
static struct regulator_ops mc13783_gpo_regulator_ops = {
.enable = mc13783_gpo_regulator_enable,
.disable = mc13783_gpo_regulator_disable,
.is_enabled = mc13783_gpo_regulator_is_enabled,
.list_voltage = mc13xxx_regulator_list_voltage,
.set_voltage = mc13xxx_fixed_regulator_set_voltage,
.get_voltage = mc13xxx_fixed_regulator_get_voltage,
};
static int __devinit mc13783_regulator_probe(struct platform_device *pdev)
{
struct mc13xxx_regulator_priv *priv;
struct mc13xxx *mc13783 = dev_get_drvdata(pdev->dev.parent);
struct mc13783_regulator_platform_data *pdata = mfd_get_data(pdev);
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) +
pdata->num_regulators * sizeof(priv->regulators[0]),
GFP_KERNEL);
if (!priv)
return -ENOMEM;
priv->mc13xxx_regulators = mc13783_regulators;
priv->mc13xxx = mc13783;
for (i = 0; i < pdata->num_regulators; i++) {
init_data = &pdata->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 mc13xxx_regulator_priv *priv = platform_get_drvdata(pdev);
struct mc13783_regulator_platform_data *pdata = mfd_get_data(pdev);
int i;
platform_set_drvdata(pdev, NULL);
for (i = 0; i < pdata->num_regulators; i++)
regulator_unregister(priv->regulators[i]);
kfree(priv);
return 0;
}
static struct platform_driver mc13783_regulator_driver = {
.driver = {
.name = "mc13783-regulator",
.owner = THIS_MODULE,
},
.remove = __devexit_p(mc13783_regulator_remove),
.probe = mc13783_regulator_probe,
};
static int __init mc13783_regulator_init(void)
{
return platform_driver_register(&mc13783_regulator_driver);
}
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 v2");
MODULE_AUTHOR("Sascha Hauer <s.hauer@pengutronix.de>");
MODULE_DESCRIPTION("Regulator Driver for Freescale MC13783 PMIC");
MODULE_ALIAS("platform:mc13783-regulator");
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