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linux-stable/drivers/regulator/tps65910-regulator.c
Linus Torvalds 4b78147468 MFD changes for 3.5 
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Merge tag 'mfd-3.5-1' of git://git.kernel.org/pub/scm/linux/kernel/git/sameo/mfd-2.6

Pull MFD changes from Samuel Ortiz:
 "Besides the usual cleanups, this one brings:

   * Support for 5 new chipsets: Intel's ICH LPC and SCH Centerton,
     ST-E's STAX211, Samsung's MAX77693 and TI's LM3533.

   * Device tree support for the twl6040, tps65910, da9502 and ab8500
     drivers.

   * Fairly big tps56910, ab8500 and db8500 updates.

   * i2c support for mc13xxx.

   * Our regular update for the wm8xxx driver from Mark."

Fix up various conflicts with other trees, largely due to ab5500 removal
etc.

* tag 'mfd-3.5-1' of git://git.kernel.org/pub/scm/linux/kernel/git/sameo/mfd-2.6: (106 commits)
  mfd: Fix build break of max77693 by adding REGMAP_I2C option
  mfd: Fix twl6040 build failure
  mfd: Fix max77693 build failure
  mfd: ab8500-core should depend on MFD_DB8500_PRCMU
  gpio: tps65910: dt: process gpio specific device node info
  mfd: Remove the parsing of dt info for tps65910 gpio
  mfd: Save device node parsed platform data for tps65910 sub devices
  mfd: Add r_select to lm3533 platform data
  gpio: Add Intel Centerton support to gpio-sch
  mfd: Emulate active low IRQs as well as active high IRQs for wm831x
  mfd: Mark two lm3533 zone registers as volatile
  mfd: Fix return type of lm533 attribute is_visible
  mfd: Enable Device Tree support in the ab8500-pwm driver
  mfd: Enable Device Tree support in the ab8500-sysctrl driver
  mfd: Add support for Device Tree to twl6040
  mfd: Register the twl6040 child for the ASoC codec unconditionally
  mfd: Allocate twl6040 IRQ numbers dynamically
  mfd: twl6040 code cleanup in interrupt initialization part
  mfd: Enable ab8500-gpadc driver for Device Tree
  mfd: Prevent unassigned pointer from being used in ab8500-gpadc driver
  ...
2012-05-29 11:53:11 -07:00

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/*
* tps65910.c -- TI tps65910
*
* Copyright 2010 Texas Instruments Inc.
*
* Author: Graeme Gregory <gg@slimlogic.co.uk>
* Author: Jorge Eduardo Candelaria <jedu@slimlogic.co.uk>
*
* 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.
*
*/
#include <linux/kernel.h>
#include <linux/module.h>
#include <linux/init.h>
#include <linux/err.h>
#include <linux/platform_device.h>
#include <linux/regulator/driver.h>
#include <linux/regulator/machine.h>
#include <linux/slab.h>
#include <linux/gpio.h>
#include <linux/mfd/tps65910.h>
#include <linux/regulator/of_regulator.h>
#define TPS65910_SUPPLY_STATE_ENABLED 0x1
#define EXT_SLEEP_CONTROL (TPS65910_SLEEP_CONTROL_EXT_INPUT_EN1 | \
TPS65910_SLEEP_CONTROL_EXT_INPUT_EN2 | \
TPS65910_SLEEP_CONTROL_EXT_INPUT_EN3 | \
TPS65911_SLEEP_CONTROL_EXT_INPUT_SLEEP)
/* supported VIO voltages in millivolts */
static const u16 VIO_VSEL_table[] = {
1500, 1800, 2500, 3300,
};
/* VSEL tables for TPS65910 specific LDOs and dcdc's */
/* supported VDD3 voltages in millivolts */
static const u16 VDD3_VSEL_table[] = {
5000,
};
/* supported VDIG1 voltages in millivolts */
static const u16 VDIG1_VSEL_table[] = {
1200, 1500, 1800, 2700,
};
/* supported VDIG2 voltages in millivolts */
static const u16 VDIG2_VSEL_table[] = {
1000, 1100, 1200, 1800,
};
/* supported VPLL voltages in millivolts */
static const u16 VPLL_VSEL_table[] = {
1000, 1100, 1800, 2500,
};
/* supported VDAC voltages in millivolts */
static const u16 VDAC_VSEL_table[] = {
1800, 2600, 2800, 2850,
};
/* supported VAUX1 voltages in millivolts */
static const u16 VAUX1_VSEL_table[] = {
1800, 2500, 2800, 2850,
};
/* supported VAUX2 voltages in millivolts */
static const u16 VAUX2_VSEL_table[] = {
1800, 2800, 2900, 3300,
};
/* supported VAUX33 voltages in millivolts */
static const u16 VAUX33_VSEL_table[] = {
1800, 2000, 2800, 3300,
};
/* supported VMMC voltages in millivolts */
static const u16 VMMC_VSEL_table[] = {
1800, 2800, 3000, 3300,
};
struct tps_info {
const char *name;
unsigned min_uV;
unsigned max_uV;
u8 n_voltages;
const u16 *voltage_table;
int enable_time_us;
};
static struct tps_info tps65910_regs[] = {
{
.name = "vrtc",
.enable_time_us = 2200,
},
{
.name = "vio",
.min_uV = 1500000,
.max_uV = 3300000,
.n_voltages = ARRAY_SIZE(VIO_VSEL_table),
.voltage_table = VIO_VSEL_table,
.enable_time_us = 350,
},
{
.name = "vdd1",
.min_uV = 600000,
.max_uV = 4500000,
.enable_time_us = 350,
},
{
.name = "vdd2",
.min_uV = 600000,
.max_uV = 4500000,
.enable_time_us = 350,
},
{
.name = "vdd3",
.min_uV = 5000000,
.max_uV = 5000000,
.n_voltages = ARRAY_SIZE(VDD3_VSEL_table),
.voltage_table = VDD3_VSEL_table,
.enable_time_us = 200,
},
{
.name = "vdig1",
.min_uV = 1200000,
.max_uV = 2700000,
.n_voltages = ARRAY_SIZE(VDIG1_VSEL_table),
.voltage_table = VDIG1_VSEL_table,
.enable_time_us = 100,
},
{
.name = "vdig2",
.min_uV = 1000000,
.max_uV = 1800000,
.n_voltages = ARRAY_SIZE(VDIG2_VSEL_table),
.voltage_table = VDIG2_VSEL_table,
.enable_time_us = 100,
},
{
.name = "vpll",
.min_uV = 1000000,
.max_uV = 2500000,
.n_voltages = ARRAY_SIZE(VPLL_VSEL_table),
.voltage_table = VPLL_VSEL_table,
.enable_time_us = 100,
},
{
.name = "vdac",
.min_uV = 1800000,
.max_uV = 2850000,
.n_voltages = ARRAY_SIZE(VDAC_VSEL_table),
.voltage_table = VDAC_VSEL_table,
.enable_time_us = 100,
},
{
.name = "vaux1",
.min_uV = 1800000,
.max_uV = 2850000,
.n_voltages = ARRAY_SIZE(VAUX1_VSEL_table),
.voltage_table = VAUX1_VSEL_table,
.enable_time_us = 100,
},
{
.name = "vaux2",
.min_uV = 1800000,
.max_uV = 3300000,
.n_voltages = ARRAY_SIZE(VAUX2_VSEL_table),
.voltage_table = VAUX2_VSEL_table,
.enable_time_us = 100,
},
{
.name = "vaux33",
.min_uV = 1800000,
.max_uV = 3300000,
.n_voltages = ARRAY_SIZE(VAUX33_VSEL_table),
.voltage_table = VAUX33_VSEL_table,
.enable_time_us = 100,
},
{
.name = "vmmc",
.min_uV = 1800000,
.max_uV = 3300000,
.n_voltages = ARRAY_SIZE(VMMC_VSEL_table),
.voltage_table = VMMC_VSEL_table,
.enable_time_us = 100,
},
};
static struct tps_info tps65911_regs[] = {
{
.name = "vrtc",
.enable_time_us = 2200,
},
{
.name = "vio",
.min_uV = 1500000,
.max_uV = 3300000,
.n_voltages = ARRAY_SIZE(VIO_VSEL_table),
.voltage_table = VIO_VSEL_table,
.enable_time_us = 350,
},
{
.name = "vdd1",
.min_uV = 600000,
.max_uV = 4500000,
.n_voltages = 73,
.enable_time_us = 350,
},
{
.name = "vdd2",
.min_uV = 600000,
.max_uV = 4500000,
.n_voltages = 73,
.enable_time_us = 350,
},
{
.name = "vddctrl",
.min_uV = 600000,
.max_uV = 1400000,
.n_voltages = 65,
.enable_time_us = 900,
},
{
.name = "ldo1",
.min_uV = 1000000,
.max_uV = 3300000,
.n_voltages = 47,
.enable_time_us = 420,
},
{
.name = "ldo2",
.min_uV = 1000000,
.max_uV = 3300000,
.n_voltages = 47,
.enable_time_us = 420,
},
{
.name = "ldo3",
.min_uV = 1000000,
.max_uV = 3300000,
.n_voltages = 24,
.enable_time_us = 230,
},
{
.name = "ldo4",
.min_uV = 1000000,
.max_uV = 3300000,
.n_voltages = 47,
.enable_time_us = 230,
},
{
.name = "ldo5",
.min_uV = 1000000,
.max_uV = 3300000,
.n_voltages = 24,
.enable_time_us = 230,
},
{
.name = "ldo6",
.min_uV = 1000000,
.max_uV = 3300000,
.n_voltages = 24,
.enable_time_us = 230,
},
{
.name = "ldo7",
.min_uV = 1000000,
.max_uV = 3300000,
.n_voltages = 24,
.enable_time_us = 230,
},
{
.name = "ldo8",
.min_uV = 1000000,
.max_uV = 3300000,
.n_voltages = 24,
.enable_time_us = 230,
},
};
#define EXT_CONTROL_REG_BITS(id, regs_offs, bits) (((regs_offs) << 8) | (bits))
static unsigned int tps65910_ext_sleep_control[] = {
0,
EXT_CONTROL_REG_BITS(VIO, 1, 0),
EXT_CONTROL_REG_BITS(VDD1, 1, 1),
EXT_CONTROL_REG_BITS(VDD2, 1, 2),
EXT_CONTROL_REG_BITS(VDD3, 1, 3),
EXT_CONTROL_REG_BITS(VDIG1, 0, 1),
EXT_CONTROL_REG_BITS(VDIG2, 0, 2),
EXT_CONTROL_REG_BITS(VPLL, 0, 6),
EXT_CONTROL_REG_BITS(VDAC, 0, 7),
EXT_CONTROL_REG_BITS(VAUX1, 0, 3),
EXT_CONTROL_REG_BITS(VAUX2, 0, 4),
EXT_CONTROL_REG_BITS(VAUX33, 0, 5),
EXT_CONTROL_REG_BITS(VMMC, 0, 0),
};
static unsigned int tps65911_ext_sleep_control[] = {
0,
EXT_CONTROL_REG_BITS(VIO, 1, 0),
EXT_CONTROL_REG_BITS(VDD1, 1, 1),
EXT_CONTROL_REG_BITS(VDD2, 1, 2),
EXT_CONTROL_REG_BITS(VDDCTRL, 1, 3),
EXT_CONTROL_REG_BITS(LDO1, 0, 1),
EXT_CONTROL_REG_BITS(LDO2, 0, 2),
EXT_CONTROL_REG_BITS(LDO3, 0, 7),
EXT_CONTROL_REG_BITS(LDO4, 0, 6),
EXT_CONTROL_REG_BITS(LDO5, 0, 3),
EXT_CONTROL_REG_BITS(LDO6, 0, 0),
EXT_CONTROL_REG_BITS(LDO7, 0, 5),
EXT_CONTROL_REG_BITS(LDO8, 0, 4),
};
struct tps65910_reg {
struct regulator_desc *desc;
struct tps65910 *mfd;
struct regulator_dev **rdev;
struct tps_info **info;
struct mutex mutex;
int num_regulators;
int mode;
int (*get_ctrl_reg)(int);
unsigned int *ext_sleep_control;
unsigned int board_ext_control[TPS65910_NUM_REGS];
};
static inline int tps65910_read(struct tps65910_reg *pmic, u8 reg)
{
unsigned int val;
int err;
err = tps65910_reg_read(pmic->mfd, reg, &val);
if (err)
return err;
return val;
}
static int tps65910_modify_bits(struct tps65910_reg *pmic, u8 reg,
u8 set_mask, u8 clear_mask)
{
int err, data;
mutex_lock(&pmic->mutex);
data = tps65910_read(pmic, reg);
if (data < 0) {
dev_err(pmic->mfd->dev, "Read from reg 0x%x failed\n", reg);
err = data;
goto out;
}
data &= ~clear_mask;
data |= set_mask;
err = tps65910_reg_write(pmic->mfd, reg, data);
if (err)
dev_err(pmic->mfd->dev, "Write for reg 0x%x failed\n", reg);
out:
mutex_unlock(&pmic->mutex);
return err;
}
static int tps65910_reg_read_locked(struct tps65910_reg *pmic, u8 reg)
{
int data;
mutex_lock(&pmic->mutex);
data = tps65910_read(pmic, reg);
if (data < 0)
dev_err(pmic->mfd->dev, "Read from reg 0x%x failed\n", reg);
mutex_unlock(&pmic->mutex);
return data;
}
static int tps65910_reg_write_locked(struct tps65910_reg *pmic, u8 reg, u8 val)
{
int err;
mutex_lock(&pmic->mutex);
err = tps65910_reg_write(pmic->mfd, reg, val);
if (err < 0)
dev_err(pmic->mfd->dev, "Write for reg 0x%x failed\n", reg);
mutex_unlock(&pmic->mutex);
return err;
}
static int tps65910_get_ctrl_register(int id)
{
switch (id) {
case TPS65910_REG_VRTC:
return TPS65910_VRTC;
case TPS65910_REG_VIO:
return TPS65910_VIO;
case TPS65910_REG_VDD1:
return TPS65910_VDD1;
case TPS65910_REG_VDD2:
return TPS65910_VDD2;
case TPS65910_REG_VDD3:
return TPS65910_VDD3;
case TPS65910_REG_VDIG1:
return TPS65910_VDIG1;
case TPS65910_REG_VDIG2:
return TPS65910_VDIG2;
case TPS65910_REG_VPLL:
return TPS65910_VPLL;
case TPS65910_REG_VDAC:
return TPS65910_VDAC;
case TPS65910_REG_VAUX1:
return TPS65910_VAUX1;
case TPS65910_REG_VAUX2:
return TPS65910_VAUX2;
case TPS65910_REG_VAUX33:
return TPS65910_VAUX33;
case TPS65910_REG_VMMC:
return TPS65910_VMMC;
default:
return -EINVAL;
}
}
static int tps65911_get_ctrl_register(int id)
{
switch (id) {
case TPS65910_REG_VRTC:
return TPS65910_VRTC;
case TPS65910_REG_VIO:
return TPS65910_VIO;
case TPS65910_REG_VDD1:
return TPS65910_VDD1;
case TPS65910_REG_VDD2:
return TPS65910_VDD2;
case TPS65911_REG_VDDCTRL:
return TPS65911_VDDCTRL;
case TPS65911_REG_LDO1:
return TPS65911_LDO1;
case TPS65911_REG_LDO2:
return TPS65911_LDO2;
case TPS65911_REG_LDO3:
return TPS65911_LDO3;
case TPS65911_REG_LDO4:
return TPS65911_LDO4;
case TPS65911_REG_LDO5:
return TPS65911_LDO5;
case TPS65911_REG_LDO6:
return TPS65911_LDO6;
case TPS65911_REG_LDO7:
return TPS65911_LDO7;
case TPS65911_REG_LDO8:
return TPS65911_LDO8;
default:
return -EINVAL;
}
}
static int tps65910_enable_time(struct regulator_dev *dev)
{
struct tps65910_reg *pmic = rdev_get_drvdata(dev);
int id = rdev_get_id(dev);
return pmic->info[id]->enable_time_us;
}
static int tps65910_set_mode(struct regulator_dev *dev, unsigned int mode)
{
struct tps65910_reg *pmic = rdev_get_drvdata(dev);
struct tps65910 *mfd = pmic->mfd;
int reg, value, id = rdev_get_id(dev);
reg = pmic->get_ctrl_reg(id);
if (reg < 0)
return reg;
switch (mode) {
case REGULATOR_MODE_NORMAL:
return tps65910_modify_bits(pmic, reg, LDO_ST_ON_BIT,
LDO_ST_MODE_BIT);
case REGULATOR_MODE_IDLE:
value = LDO_ST_ON_BIT | LDO_ST_MODE_BIT;
return tps65910_reg_set_bits(mfd, reg, value);
case REGULATOR_MODE_STANDBY:
return tps65910_reg_clear_bits(mfd, reg, LDO_ST_ON_BIT);
}
return -EINVAL;
}
static unsigned int tps65910_get_mode(struct regulator_dev *dev)
{
struct tps65910_reg *pmic = rdev_get_drvdata(dev);
int reg, value, id = rdev_get_id(dev);
reg = pmic->get_ctrl_reg(id);
if (reg < 0)
return reg;
value = tps65910_reg_read_locked(pmic, reg);
if (value < 0)
return value;
if (!(value & LDO_ST_ON_BIT))
return REGULATOR_MODE_STANDBY;
else if (value & LDO_ST_MODE_BIT)
return REGULATOR_MODE_IDLE;
else
return REGULATOR_MODE_NORMAL;
}
static int tps65910_get_voltage_dcdc_sel(struct regulator_dev *dev)
{
struct tps65910_reg *pmic = rdev_get_drvdata(dev);
int id = rdev_get_id(dev);
int opvsel = 0, srvsel = 0, vselmax = 0, mult = 0, sr = 0;
switch (id) {
case TPS65910_REG_VDD1:
opvsel = tps65910_reg_read_locked(pmic, TPS65910_VDD1_OP);
mult = tps65910_reg_read_locked(pmic, TPS65910_VDD1);
mult = (mult & VDD1_VGAIN_SEL_MASK) >> VDD1_VGAIN_SEL_SHIFT;
srvsel = tps65910_reg_read_locked(pmic, TPS65910_VDD1_SR);
sr = opvsel & VDD1_OP_CMD_MASK;
opvsel &= VDD1_OP_SEL_MASK;
srvsel &= VDD1_SR_SEL_MASK;
vselmax = 75;
break;
case TPS65910_REG_VDD2:
opvsel = tps65910_reg_read_locked(pmic, TPS65910_VDD2_OP);
mult = tps65910_reg_read_locked(pmic, TPS65910_VDD2);
mult = (mult & VDD2_VGAIN_SEL_MASK) >> VDD2_VGAIN_SEL_SHIFT;
srvsel = tps65910_reg_read_locked(pmic, TPS65910_VDD2_SR);
sr = opvsel & VDD2_OP_CMD_MASK;
opvsel &= VDD2_OP_SEL_MASK;
srvsel &= VDD2_SR_SEL_MASK;
vselmax = 75;
break;
case TPS65911_REG_VDDCTRL:
opvsel = tps65910_reg_read_locked(pmic, TPS65911_VDDCTRL_OP);
srvsel = tps65910_reg_read_locked(pmic, TPS65911_VDDCTRL_SR);
sr = opvsel & VDDCTRL_OP_CMD_MASK;
opvsel &= VDDCTRL_OP_SEL_MASK;
srvsel &= VDDCTRL_SR_SEL_MASK;
vselmax = 64;
break;
}
/* multiplier 0 == 1 but 2,3 normal */
if (!mult)
mult=1;
if (sr) {
/* normalise to valid range */
if (srvsel < 3)
srvsel = 3;
if (srvsel > vselmax)
srvsel = vselmax;
return srvsel - 3;
} else {
/* normalise to valid range*/
if (opvsel < 3)
opvsel = 3;
if (opvsel > vselmax)
opvsel = vselmax;
return opvsel - 3;
}
return -EINVAL;
}
static int tps65910_get_voltage_sel(struct regulator_dev *dev)
{
struct tps65910_reg *pmic = rdev_get_drvdata(dev);
int reg, value, id = rdev_get_id(dev);
reg = pmic->get_ctrl_reg(id);
if (reg < 0)
return reg;
value = tps65910_reg_read_locked(pmic, reg);
if (value < 0)
return value;
switch (id) {
case TPS65910_REG_VIO:
case TPS65910_REG_VDIG1:
case TPS65910_REG_VDIG2:
case TPS65910_REG_VPLL:
case TPS65910_REG_VDAC:
case TPS65910_REG_VAUX1:
case TPS65910_REG_VAUX2:
case TPS65910_REG_VAUX33:
case TPS65910_REG_VMMC:
value &= LDO_SEL_MASK;
value >>= LDO_SEL_SHIFT;
break;
default:
return -EINVAL;
}
return value;
}
static int tps65910_get_voltage_vdd3(struct regulator_dev *dev)
{
return 5 * 1000 * 1000;
}
static int tps65911_get_voltage_sel(struct regulator_dev *dev)
{
struct tps65910_reg *pmic = rdev_get_drvdata(dev);
int id = rdev_get_id(dev);
u8 value, reg;
reg = pmic->get_ctrl_reg(id);
value = tps65910_reg_read_locked(pmic, reg);
switch (id) {
case TPS65911_REG_LDO1:
case TPS65911_REG_LDO2:
case TPS65911_REG_LDO4:
value &= LDO1_SEL_MASK;
value >>= LDO_SEL_SHIFT;
break;
case TPS65911_REG_LDO3:
case TPS65911_REG_LDO5:
case TPS65911_REG_LDO6:
case TPS65911_REG_LDO7:
case TPS65911_REG_LDO8:
value &= LDO3_SEL_MASK;
value >>= LDO_SEL_SHIFT;
break;
case TPS65910_REG_VIO:
value &= LDO_SEL_MASK;
value >>= LDO_SEL_SHIFT;
break;
default:
return -EINVAL;
}
return value;
}
static int tps65910_set_voltage_dcdc_sel(struct regulator_dev *dev,
unsigned selector)
{
struct tps65910_reg *pmic = rdev_get_drvdata(dev);
int id = rdev_get_id(dev), vsel;
int dcdc_mult = 0;
switch (id) {
case TPS65910_REG_VDD1:
dcdc_mult = (selector / VDD1_2_NUM_VOLT_FINE) + 1;
if (dcdc_mult == 1)
dcdc_mult--;
vsel = (selector % VDD1_2_NUM_VOLT_FINE) + 3;
tps65910_modify_bits(pmic, TPS65910_VDD1,
(dcdc_mult << VDD1_VGAIN_SEL_SHIFT),
VDD1_VGAIN_SEL_MASK);
tps65910_reg_write_locked(pmic, TPS65910_VDD1_OP, vsel);
break;
case TPS65910_REG_VDD2:
dcdc_mult = (selector / VDD1_2_NUM_VOLT_FINE) + 1;
if (dcdc_mult == 1)
dcdc_mult--;
vsel = (selector % VDD1_2_NUM_VOLT_FINE) + 3;
tps65910_modify_bits(pmic, TPS65910_VDD2,
(dcdc_mult << VDD2_VGAIN_SEL_SHIFT),
VDD1_VGAIN_SEL_MASK);
tps65910_reg_write_locked(pmic, TPS65910_VDD2_OP, vsel);
break;
case TPS65911_REG_VDDCTRL:
vsel = selector + 3;
tps65910_reg_write_locked(pmic, TPS65911_VDDCTRL_OP, vsel);
}
return 0;
}
static int tps65910_set_voltage_sel(struct regulator_dev *dev,
unsigned selector)
{
struct tps65910_reg *pmic = rdev_get_drvdata(dev);
int reg, id = rdev_get_id(dev);
reg = pmic->get_ctrl_reg(id);
if (reg < 0)
return reg;
switch (id) {
case TPS65910_REG_VIO:
case TPS65910_REG_VDIG1:
case TPS65910_REG_VDIG2:
case TPS65910_REG_VPLL:
case TPS65910_REG_VDAC:
case TPS65910_REG_VAUX1:
case TPS65910_REG_VAUX2:
case TPS65910_REG_VAUX33:
case TPS65910_REG_VMMC:
return tps65910_modify_bits(pmic, reg,
(selector << LDO_SEL_SHIFT), LDO_SEL_MASK);
}
return -EINVAL;
}
static int tps65911_set_voltage_sel(struct regulator_dev *dev,
unsigned selector)
{
struct tps65910_reg *pmic = rdev_get_drvdata(dev);
int reg, id = rdev_get_id(dev);
reg = pmic->get_ctrl_reg(id);
if (reg < 0)
return reg;
switch (id) {
case TPS65911_REG_LDO1:
case TPS65911_REG_LDO2:
case TPS65911_REG_LDO4:
return tps65910_modify_bits(pmic, reg,
(selector << LDO_SEL_SHIFT), LDO1_SEL_MASK);
case TPS65911_REG_LDO3:
case TPS65911_REG_LDO5:
case TPS65911_REG_LDO6:
case TPS65911_REG_LDO7:
case TPS65911_REG_LDO8:
return tps65910_modify_bits(pmic, reg,
(selector << LDO_SEL_SHIFT), LDO3_SEL_MASK);
case TPS65910_REG_VIO:
return tps65910_modify_bits(pmic, reg,
(selector << LDO_SEL_SHIFT), LDO_SEL_MASK);
}
return -EINVAL;
}
static int tps65910_list_voltage_dcdc(struct regulator_dev *dev,
unsigned selector)
{
int volt, mult = 1, id = rdev_get_id(dev);
switch (id) {
case TPS65910_REG_VDD1:
case TPS65910_REG_VDD2:
mult = (selector / VDD1_2_NUM_VOLT_FINE) + 1;
volt = VDD1_2_MIN_VOLT +
(selector % VDD1_2_NUM_VOLT_FINE) * VDD1_2_OFFSET;
break;
case TPS65911_REG_VDDCTRL:
volt = VDDCTRL_MIN_VOLT + (selector * VDDCTRL_OFFSET);
break;
default:
BUG();
return -EINVAL;
}
return volt * 100 * mult;
}
static int tps65910_list_voltage(struct regulator_dev *dev,
unsigned selector)
{
struct tps65910_reg *pmic = rdev_get_drvdata(dev);
int id = rdev_get_id(dev), voltage;
if (id < TPS65910_REG_VIO || id > TPS65910_REG_VMMC)
return -EINVAL;
if (selector >= pmic->info[id]->n_voltages)
return -EINVAL;
else
voltage = pmic->info[id]->voltage_table[selector] * 1000;
return voltage;
}
static int tps65911_list_voltage(struct regulator_dev *dev, unsigned selector)
{
struct tps65910_reg *pmic = rdev_get_drvdata(dev);
int step_mv = 0, id = rdev_get_id(dev);
switch(id) {
case TPS65911_REG_LDO1:
case TPS65911_REG_LDO2:
case TPS65911_REG_LDO4:
/* The first 5 values of the selector correspond to 1V */
if (selector < 5)
selector = 0;
else
selector -= 4;
step_mv = 50;
break;
case TPS65911_REG_LDO3:
case TPS65911_REG_LDO5:
case TPS65911_REG_LDO6:
case TPS65911_REG_LDO7:
case TPS65911_REG_LDO8:
/* The first 3 values of the selector correspond to 1V */
if (selector < 3)
selector = 0;
else
selector -= 2;
step_mv = 100;
break;
case TPS65910_REG_VIO:
return pmic->info[id]->voltage_table[selector] * 1000;
default:
return -EINVAL;
}
return (LDO_MIN_VOLT + selector * step_mv) * 1000;
}
static int tps65910_set_voltage_dcdc_time_sel(struct regulator_dev *dev,
unsigned int old_selector, unsigned int new_selector)
{
int id = rdev_get_id(dev);
int old_volt, new_volt;
old_volt = tps65910_list_voltage_dcdc(dev, old_selector);
if (old_volt < 0)
return old_volt;
new_volt = tps65910_list_voltage_dcdc(dev, new_selector);
if (new_volt < 0)
return new_volt;
/* VDD1 and VDD2 are 12.5mV/us, VDDCTRL is 100mV/20us */
switch (id) {
case TPS65910_REG_VDD1:
case TPS65910_REG_VDD2:
return DIV_ROUND_UP(abs(old_volt - new_volt), 12500);
case TPS65911_REG_VDDCTRL:
return DIV_ROUND_UP(abs(old_volt - new_volt), 5000);
}
return -EINVAL;
}
/* Regulator ops (except VRTC) */
static struct regulator_ops tps65910_ops_dcdc = {
.is_enabled = regulator_is_enabled_regmap,
.enable = regulator_enable_regmap,
.disable = regulator_disable_regmap,
.enable_time = tps65910_enable_time,
.set_mode = tps65910_set_mode,
.get_mode = tps65910_get_mode,
.get_voltage_sel = tps65910_get_voltage_dcdc_sel,
.set_voltage_sel = tps65910_set_voltage_dcdc_sel,
.set_voltage_time_sel = tps65910_set_voltage_dcdc_time_sel,
.list_voltage = tps65910_list_voltage_dcdc,
};
static struct regulator_ops tps65910_ops_vdd3 = {
.is_enabled = regulator_is_enabled_regmap,
.enable = regulator_enable_regmap,
.disable = regulator_disable_regmap,
.enable_time = tps65910_enable_time,
.set_mode = tps65910_set_mode,
.get_mode = tps65910_get_mode,
.get_voltage = tps65910_get_voltage_vdd3,
.list_voltage = tps65910_list_voltage,
};
static struct regulator_ops tps65910_ops = {
.is_enabled = regulator_is_enabled_regmap,
.enable = regulator_enable_regmap,
.disable = regulator_disable_regmap,
.enable_time = tps65910_enable_time,
.set_mode = tps65910_set_mode,
.get_mode = tps65910_get_mode,
.get_voltage_sel = tps65910_get_voltage_sel,
.set_voltage_sel = tps65910_set_voltage_sel,
.list_voltage = tps65910_list_voltage,
};
static struct regulator_ops tps65911_ops = {
.is_enabled = regulator_is_enabled_regmap,
.enable = regulator_enable_regmap,
.disable = regulator_disable_regmap,
.enable_time = tps65910_enable_time,
.set_mode = tps65910_set_mode,
.get_mode = tps65910_get_mode,
.get_voltage_sel = tps65911_get_voltage_sel,
.set_voltage_sel = tps65911_set_voltage_sel,
.list_voltage = tps65911_list_voltage,
};
static int tps65910_set_ext_sleep_config(struct tps65910_reg *pmic,
int id, int ext_sleep_config)
{
struct tps65910 *mfd = pmic->mfd;
u8 regoffs = (pmic->ext_sleep_control[id] >> 8) & 0xFF;
u8 bit_pos = (1 << pmic->ext_sleep_control[id] & 0xFF);
int ret;
/*
* Regulator can not be control from multiple external input EN1, EN2
* and EN3 together.
*/
if (ext_sleep_config & EXT_SLEEP_CONTROL) {
int en_count;
en_count = ((ext_sleep_config &
TPS65910_SLEEP_CONTROL_EXT_INPUT_EN1) != 0);
en_count += ((ext_sleep_config &
TPS65910_SLEEP_CONTROL_EXT_INPUT_EN2) != 0);
en_count += ((ext_sleep_config &
TPS65910_SLEEP_CONTROL_EXT_INPUT_EN3) != 0);
en_count += ((ext_sleep_config &
TPS65911_SLEEP_CONTROL_EXT_INPUT_SLEEP) != 0);
if (en_count > 1) {
dev_err(mfd->dev,
"External sleep control flag is not proper\n");
return -EINVAL;
}
}
pmic->board_ext_control[id] = ext_sleep_config;
/* External EN1 control */
if (ext_sleep_config & TPS65910_SLEEP_CONTROL_EXT_INPUT_EN1)
ret = tps65910_reg_set_bits(mfd,
TPS65910_EN1_LDO_ASS + regoffs, bit_pos);
else
ret = tps65910_reg_clear_bits(mfd,
TPS65910_EN1_LDO_ASS + regoffs, bit_pos);
if (ret < 0) {
dev_err(mfd->dev,
"Error in configuring external control EN1\n");
return ret;
}
/* External EN2 control */
if (ext_sleep_config & TPS65910_SLEEP_CONTROL_EXT_INPUT_EN2)
ret = tps65910_reg_set_bits(mfd,
TPS65910_EN2_LDO_ASS + regoffs, bit_pos);
else
ret = tps65910_reg_clear_bits(mfd,
TPS65910_EN2_LDO_ASS + regoffs, bit_pos);
if (ret < 0) {
dev_err(mfd->dev,
"Error in configuring external control EN2\n");
return ret;
}
/* External EN3 control for TPS65910 LDO only */
if ((tps65910_chip_id(mfd) == TPS65910) &&
(id >= TPS65910_REG_VDIG1)) {
if (ext_sleep_config & TPS65910_SLEEP_CONTROL_EXT_INPUT_EN3)
ret = tps65910_reg_set_bits(mfd,
TPS65910_EN3_LDO_ASS + regoffs, bit_pos);
else
ret = tps65910_reg_clear_bits(mfd,
TPS65910_EN3_LDO_ASS + regoffs, bit_pos);
if (ret < 0) {
dev_err(mfd->dev,
"Error in configuring external control EN3\n");
return ret;
}
}
/* Return if no external control is selected */
if (!(ext_sleep_config & EXT_SLEEP_CONTROL)) {
/* Clear all sleep controls */
ret = tps65910_reg_clear_bits(mfd,
TPS65910_SLEEP_KEEP_LDO_ON + regoffs, bit_pos);
if (!ret)
ret = tps65910_reg_clear_bits(mfd,
TPS65910_SLEEP_SET_LDO_OFF + regoffs, bit_pos);
if (ret < 0)
dev_err(mfd->dev,
"Error in configuring SLEEP register\n");
return ret;
}
/*
* For regulator that has separate operational and sleep register make
* sure that operational is used and clear sleep register to turn
* regulator off when external control is inactive
*/
if ((id == TPS65910_REG_VDD1) ||
(id == TPS65910_REG_VDD2) ||
((id == TPS65911_REG_VDDCTRL) &&
(tps65910_chip_id(mfd) == TPS65911))) {
int op_reg_add = pmic->get_ctrl_reg(id) + 1;
int sr_reg_add = pmic->get_ctrl_reg(id) + 2;
int opvsel = tps65910_reg_read_locked(pmic, op_reg_add);
int srvsel = tps65910_reg_read_locked(pmic, sr_reg_add);
if (opvsel & VDD1_OP_CMD_MASK) {
u8 reg_val = srvsel & VDD1_OP_SEL_MASK;
ret = tps65910_reg_write_locked(pmic, op_reg_add,
reg_val);
if (ret < 0) {
dev_err(mfd->dev,
"Error in configuring op register\n");
return ret;
}
}
ret = tps65910_reg_write_locked(pmic, sr_reg_add, 0);
if (ret < 0) {
dev_err(mfd->dev, "Error in settting sr register\n");
return ret;
}
}
ret = tps65910_reg_clear_bits(mfd,
TPS65910_SLEEP_KEEP_LDO_ON + regoffs, bit_pos);
if (!ret) {
if (ext_sleep_config & TPS65911_SLEEP_CONTROL_EXT_INPUT_SLEEP)
ret = tps65910_reg_set_bits(mfd,
TPS65910_SLEEP_SET_LDO_OFF + regoffs, bit_pos);
else
ret = tps65910_reg_clear_bits(mfd,
TPS65910_SLEEP_SET_LDO_OFF + regoffs, bit_pos);
}
if (ret < 0)
dev_err(mfd->dev,
"Error in configuring SLEEP register\n");
return ret;
}
#ifdef CONFIG_OF
static struct of_regulator_match tps65910_matches[] = {
{ .name = "vrtc", .driver_data = (void *) &tps65910_regs[0] },
{ .name = "vio", .driver_data = (void *) &tps65910_regs[1] },
{ .name = "vdd1", .driver_data = (void *) &tps65910_regs[2] },
{ .name = "vdd2", .driver_data = (void *) &tps65910_regs[3] },
{ .name = "vdd3", .driver_data = (void *) &tps65910_regs[4] },
{ .name = "vdig1", .driver_data = (void *) &tps65910_regs[5] },
{ .name = "vdig2", .driver_data = (void *) &tps65910_regs[6] },
{ .name = "vpll", .driver_data = (void *) &tps65910_regs[7] },
{ .name = "vdac", .driver_data = (void *) &tps65910_regs[8] },
{ .name = "vaux1", .driver_data = (void *) &tps65910_regs[9] },
{ .name = "vaux2", .driver_data = (void *) &tps65910_regs[10] },
{ .name = "vaux33", .driver_data = (void *) &tps65910_regs[11] },
{ .name = "vmmc", .driver_data = (void *) &tps65910_regs[12] },
};
static struct of_regulator_match tps65911_matches[] = {
{ .name = "vrtc", .driver_data = (void *) &tps65911_regs[0] },
{ .name = "vio", .driver_data = (void *) &tps65911_regs[1] },
{ .name = "vdd1", .driver_data = (void *) &tps65911_regs[2] },
{ .name = "vdd2", .driver_data = (void *) &tps65911_regs[3] },
{ .name = "vddctrl", .driver_data = (void *) &tps65911_regs[4] },
{ .name = "ldo1", .driver_data = (void *) &tps65911_regs[5] },
{ .name = "ldo2", .driver_data = (void *) &tps65911_regs[6] },
{ .name = "ldo3", .driver_data = (void *) &tps65911_regs[7] },
{ .name = "ldo4", .driver_data = (void *) &tps65911_regs[8] },
{ .name = "ldo5", .driver_data = (void *) &tps65911_regs[9] },
{ .name = "ldo6", .driver_data = (void *) &tps65911_regs[10] },
{ .name = "ldo7", .driver_data = (void *) &tps65911_regs[11] },
{ .name = "ldo8", .driver_data = (void *) &tps65911_regs[12] },
};
static struct tps65910_board *tps65910_parse_dt_reg_data(
struct platform_device *pdev,
struct of_regulator_match **tps65910_reg_matches)
{
struct tps65910_board *pmic_plat_data;
struct tps65910 *tps65910 = dev_get_drvdata(pdev->dev.parent);
struct device_node *np = pdev->dev.parent->of_node;
struct device_node *regulators;
struct of_regulator_match *matches;
unsigned int prop;
int idx = 0, ret, count;
pmic_plat_data = devm_kzalloc(&pdev->dev, sizeof(*pmic_plat_data),
GFP_KERNEL);
if (!pmic_plat_data) {
dev_err(&pdev->dev, "Failure to alloc pdata for regulators.\n");
return NULL;
}
regulators = of_find_node_by_name(np, "regulators");
if (!regulators) {
dev_err(&pdev->dev, "regulator node not found\n");
return NULL;
}
switch (tps65910_chip_id(tps65910)) {
case TPS65910:
count = ARRAY_SIZE(tps65910_matches);
matches = tps65910_matches;
break;
case TPS65911:
count = ARRAY_SIZE(tps65911_matches);
matches = tps65911_matches;
break;
default:
dev_err(&pdev->dev, "Invalid tps chip version\n");
return NULL;
}
ret = of_regulator_match(pdev->dev.parent, regulators, matches, count);
if (ret < 0) {
dev_err(&pdev->dev, "Error parsing regulator init data: %d\n",
ret);
return NULL;
}
*tps65910_reg_matches = matches;
for (idx = 0; idx < count; idx++) {
if (!matches[idx].init_data || !matches[idx].of_node)
continue;
pmic_plat_data->tps65910_pmic_init_data[idx] =
matches[idx].init_data;
ret = of_property_read_u32(matches[idx].of_node,
"ti,regulator-ext-sleep-control", &prop);
if (!ret)
pmic_plat_data->regulator_ext_sleep_control[idx] = prop;
}
return pmic_plat_data;
}
#else
static inline struct tps65910_board *tps65910_parse_dt_reg_data(
struct platform_device *pdev,
struct of_regulator_match **tps65910_reg_matches)
{
*tps65910_reg_matches = NULL;
return 0;
}
#endif
static __devinit int tps65910_probe(struct platform_device *pdev)
{
struct tps65910 *tps65910 = dev_get_drvdata(pdev->dev.parent);
struct regulator_config config = { };
struct tps_info *info;
struct regulator_init_data *reg_data;
struct regulator_dev *rdev;
struct tps65910_reg *pmic;
struct tps65910_board *pmic_plat_data;
struct of_regulator_match *tps65910_reg_matches = NULL;
int i, err;
pmic_plat_data = dev_get_platdata(tps65910->dev);
if (!pmic_plat_data && tps65910->dev->of_node)
pmic_plat_data = tps65910_parse_dt_reg_data(pdev,
&tps65910_reg_matches);
if (!pmic_plat_data) {
dev_err(&pdev->dev, "Platform data not found\n");
return -EINVAL;
}
pmic = devm_kzalloc(&pdev->dev, sizeof(*pmic), GFP_KERNEL);
if (!pmic) {
dev_err(&pdev->dev, "Memory allocation failed for pmic\n");
return -ENOMEM;
}
mutex_init(&pmic->mutex);
pmic->mfd = tps65910;
platform_set_drvdata(pdev, pmic);
/* Give control of all register to control port */
tps65910_reg_set_bits(pmic->mfd, TPS65910_DEVCTRL,
DEVCTRL_SR_CTL_I2C_SEL_MASK);
switch(tps65910_chip_id(tps65910)) {
case TPS65910:
pmic->get_ctrl_reg = &tps65910_get_ctrl_register;
pmic->num_regulators = ARRAY_SIZE(tps65910_regs);
pmic->ext_sleep_control = tps65910_ext_sleep_control;
info = tps65910_regs;
break;
case TPS65911:
pmic->get_ctrl_reg = &tps65911_get_ctrl_register;
pmic->num_regulators = ARRAY_SIZE(tps65911_regs);
pmic->ext_sleep_control = tps65911_ext_sleep_control;
info = tps65911_regs;
break;
default:
dev_err(&pdev->dev, "Invalid tps chip version\n");
return -ENODEV;
}
pmic->desc = devm_kzalloc(&pdev->dev, pmic->num_regulators *
sizeof(struct regulator_desc), GFP_KERNEL);
if (!pmic->desc) {
dev_err(&pdev->dev, "Memory alloc fails for desc\n");
return -ENOMEM;
}
pmic->info = devm_kzalloc(&pdev->dev, pmic->num_regulators *
sizeof(struct tps_info *), GFP_KERNEL);
if (!pmic->info) {
dev_err(&pdev->dev, "Memory alloc fails for info\n");
return -ENOMEM;
}
pmic->rdev = devm_kzalloc(&pdev->dev, pmic->num_regulators *
sizeof(struct regulator_dev *), GFP_KERNEL);
if (!pmic->rdev) {
dev_err(&pdev->dev, "Memory alloc fails for rdev\n");
return -ENOMEM;
}
for (i = 0; i < pmic->num_regulators && i < TPS65910_NUM_REGS;
i++, info++) {
reg_data = pmic_plat_data->tps65910_pmic_init_data[i];
/* Regulator API handles empty constraints but not NULL
* constraints */
if (!reg_data)
continue;
/* Register the regulators */
pmic->info[i] = info;
pmic->desc[i].name = info->name;
pmic->desc[i].id = i;
pmic->desc[i].n_voltages = info->n_voltages;
if (i == TPS65910_REG_VDD1 || i == TPS65910_REG_VDD2) {
pmic->desc[i].ops = &tps65910_ops_dcdc;
pmic->desc[i].n_voltages = VDD1_2_NUM_VOLT_FINE *
VDD1_2_NUM_VOLT_COARSE;
} else if (i == TPS65910_REG_VDD3) {
if (tps65910_chip_id(tps65910) == TPS65910)
pmic->desc[i].ops = &tps65910_ops_vdd3;
else
pmic->desc[i].ops = &tps65910_ops_dcdc;
} else {
if (tps65910_chip_id(tps65910) == TPS65910)
pmic->desc[i].ops = &tps65910_ops;
else
pmic->desc[i].ops = &tps65911_ops;
}
err = tps65910_set_ext_sleep_config(pmic, i,
pmic_plat_data->regulator_ext_sleep_control[i]);
/*
* Failing on regulator for configuring externally control
* is not a serious issue, just throw warning.
*/
if (err < 0)
dev_warn(tps65910->dev,
"Failed to initialise ext control config\n");
pmic->desc[i].type = REGULATOR_VOLTAGE;
pmic->desc[i].owner = THIS_MODULE;
pmic->desc[i].enable_reg = pmic->get_ctrl_reg(i);
pmic->desc[i].enable_mask = TPS65910_SUPPLY_STATE_ENABLED;
config.dev = tps65910->dev;
config.init_data = reg_data;
config.driver_data = pmic;
config.regmap = tps65910->regmap;
if (tps65910_reg_matches)
config.of_node = tps65910_reg_matches[i].of_node;
rdev = regulator_register(&pmic->desc[i], &config);
if (IS_ERR(rdev)) {
dev_err(tps65910->dev,
"failed to register %s regulator\n",
pdev->name);
err = PTR_ERR(rdev);
goto err_unregister_regulator;
}
/* Save regulator for cleanup */
pmic->rdev[i] = rdev;
}
return 0;
err_unregister_regulator:
while (--i >= 0)
regulator_unregister(pmic->rdev[i]);
return err;
}
static int __devexit tps65910_remove(struct platform_device *pdev)
{
struct tps65910_reg *pmic = platform_get_drvdata(pdev);
int i;
for (i = 0; i < pmic->num_regulators; i++)
regulator_unregister(pmic->rdev[i]);
return 0;
}
static void tps65910_shutdown(struct platform_device *pdev)
{
struct tps65910_reg *pmic = platform_get_drvdata(pdev);
int i;
/*
* Before bootloader jumps to kernel, it makes sure that required
* external control signals are in desired state so that given rails
* can be configure accordingly.
* If rails are configured to be controlled from external control
* then before shutting down/rebooting the system, the external
* control configuration need to be remove from the rails so that
* its output will be available as per register programming even
* if external controls are removed. This is require when the POR
* value of the control signals are not in active state and before
* bootloader initializes it, the system requires the rail output
* to be active for booting.
*/
for (i = 0; i < pmic->num_regulators; i++) {
int err;
if (!pmic->rdev[i])
continue;
err = tps65910_set_ext_sleep_config(pmic, i, 0);
if (err < 0)
dev_err(&pdev->dev,
"Error in clearing external control\n");
}
}
static struct platform_driver tps65910_driver = {
.driver = {
.name = "tps65910-pmic",
.owner = THIS_MODULE,
},
.probe = tps65910_probe,
.remove = __devexit_p(tps65910_remove),
.shutdown = tps65910_shutdown,
};
static int __init tps65910_init(void)
{
return platform_driver_register(&tps65910_driver);
}
subsys_initcall(tps65910_init);
static void __exit tps65910_cleanup(void)
{
platform_driver_unregister(&tps65910_driver);
}
module_exit(tps65910_cleanup);
MODULE_AUTHOR("Graeme Gregory <gg@slimlogic.co.uk>");
MODULE_DESCRIPTION("TPS65910/TPS65911 voltage regulator driver");
MODULE_LICENSE("GPL v2");
MODULE_ALIAS("platform:tps65910-pmic");
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