linux/drivers/regulator/twl-regulator.c
Linus Torvalds e6b5be2be4 Driver core patches for 3.19-rc1
Here's the set of driver core patches for 3.19-rc1.
 
 They are dominated by the removal of the .owner field in platform
 drivers.  They touch a lot of files, but they are "simple" changes, just
 removing a line in a structure.
 
 Other than that, a few minor driver core and debugfs changes.  There are
 some ath9k patches coming in through this tree that have been acked by
 the wireless maintainers as they relied on the debugfs changes.
 
 Everything has been in linux-next for a while.
 
 Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
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Merge tag 'driver-core-3.19-rc1' of git://git.kernel.org/pub/scm/linux/kernel/git/gregkh/driver-core

Pull driver core update from Greg KH:
 "Here's the set of driver core patches for 3.19-rc1.

  They are dominated by the removal of the .owner field in platform
  drivers.  They touch a lot of files, but they are "simple" changes,
  just removing a line in a structure.

  Other than that, a few minor driver core and debugfs changes.  There
  are some ath9k patches coming in through this tree that have been
  acked by the wireless maintainers as they relied on the debugfs
  changes.

  Everything has been in linux-next for a while"

* tag 'driver-core-3.19-rc1' of git://git.kernel.org/pub/scm/linux/kernel/git/gregkh/driver-core: (324 commits)
  Revert "ath: ath9k: use debugfs_create_devm_seqfile() helper for seq_file entries"
  fs: debugfs: add forward declaration for struct device type
  firmware class: Deletion of an unnecessary check before the function call "vunmap"
  firmware loader: fix hung task warning dump
  devcoredump: provide a one-way disable function
  device: Add dev_<level>_once variants
  ath: ath9k: use debugfs_create_devm_seqfile() helper for seq_file entries
  ath: use seq_file api for ath9k debugfs files
  debugfs: add helper function to create device related seq_file
  drivers/base: cacheinfo: remove noisy error boot message
  Revert "core: platform: add warning if driver has no owner"
  drivers: base: support cpu cache information interface to userspace via sysfs
  drivers: base: add cpu_device_create to support per-cpu devices
  topology: replace custom attribute macros with standard DEVICE_ATTR*
  cpumask: factor out show_cpumap into separate helper function
  driver core: Fix unbalanced device reference in drivers_probe
  driver core: fix race with userland in device_add()
  sysfs/kernfs: make read requests on pre-alloc files use the buffer.
  sysfs/kernfs: allow attributes to request write buffer be pre-allocated.
  fs: sysfs: return EGBIG on write if offset is larger than file size
  ...
2014-12-14 16:10:09 -08:00

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/*
* twl-regulator.c -- support regulators in twl4030/twl6030 family chips
*
* Copyright (C) 2008 David Brownell
*
* 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/module.h>
#include <linux/string.h>
#include <linux/slab.h>
#include <linux/init.h>
#include <linux/err.h>
#include <linux/platform_device.h>
#include <linux/of.h>
#include <linux/of_device.h>
#include <linux/regulator/driver.h>
#include <linux/regulator/machine.h>
#include <linux/regulator/of_regulator.h>
#include <linux/i2c/twl.h>
/*
* The TWL4030/TW5030/TPS659x0/TWL6030 family chips include power management, a
* USB OTG transceiver, an RTC, ADC, PWM, and lots more. Some versions
* include an audio codec, battery charger, and more voltage regulators.
* These chips are often used in OMAP-based systems.
*
* This driver implements software-based resource control for various
* voltage regulators. This is usually augmented with state machine
* based control.
*/
struct twlreg_info {
/* start of regulator's PM_RECEIVER control register bank */
u8 base;
/* twl resource ID, for resource control state machine */
u8 id;
/* voltage in mV = table[VSEL]; table_len must be a power-of-two */
u8 table_len;
const u16 *table;
/* State REMAP default configuration */
u8 remap;
/* chip constraints on regulator behavior */
u16 min_mV;
u16 max_mV;
u8 flags;
/* used by regulator core */
struct regulator_desc desc;
/* chip specific features */
unsigned long features;
/*
* optional override functions for voltage set/get
* these are currently only used for SMPS regulators
*/
int (*get_voltage)(void *data);
int (*set_voltage)(void *data, int target_uV);
/* data passed from board for external get/set voltage */
void *data;
};
/* LDO control registers ... offset is from the base of its register bank.
* The first three registers of all power resource banks help hardware to
* manage the various resource groups.
*/
/* Common offset in TWL4030/6030 */
#define VREG_GRP 0
/* TWL4030 register offsets */
#define VREG_TYPE 1
#define VREG_REMAP 2
#define VREG_DEDICATED 3 /* LDO control */
#define VREG_VOLTAGE_SMPS_4030 9
/* TWL6030 register offsets */
#define VREG_TRANS 1
#define VREG_STATE 2
#define VREG_VOLTAGE 3
#define VREG_VOLTAGE_SMPS 4
/* TWL6030 Misc register offsets */
#define VREG_BC_ALL 1
#define VREG_BC_REF 2
#define VREG_BC_PROC 3
#define VREG_BC_CLK_RST 4
/* TWL6030 LDO register values for CFG_STATE */
#define TWL6030_CFG_STATE_OFF 0x00
#define TWL6030_CFG_STATE_ON 0x01
#define TWL6030_CFG_STATE_OFF2 0x02
#define TWL6030_CFG_STATE_SLEEP 0x03
#define TWL6030_CFG_STATE_GRP_SHIFT 5
#define TWL6030_CFG_STATE_APP_SHIFT 2
#define TWL6030_CFG_STATE_APP_MASK (0x03 << TWL6030_CFG_STATE_APP_SHIFT)
#define TWL6030_CFG_STATE_APP(v) (((v) & TWL6030_CFG_STATE_APP_MASK) >>\
TWL6030_CFG_STATE_APP_SHIFT)
/* Flags for SMPS Voltage reading */
#define SMPS_OFFSET_EN BIT(0)
#define SMPS_EXTENDED_EN BIT(1)
/* twl6032 SMPS EPROM values */
#define TWL6030_SMPS_OFFSET 0xB0
#define TWL6030_SMPS_MULT 0xB3
#define SMPS_MULTOFFSET_SMPS4 BIT(0)
#define SMPS_MULTOFFSET_VIO BIT(1)
#define SMPS_MULTOFFSET_SMPS3 BIT(6)
static inline int
twlreg_read(struct twlreg_info *info, unsigned slave_subgp, unsigned offset)
{
u8 value;
int status;
status = twl_i2c_read_u8(slave_subgp,
&value, info->base + offset);
return (status < 0) ? status : value;
}
static inline int
twlreg_write(struct twlreg_info *info, unsigned slave_subgp, unsigned offset,
u8 value)
{
return twl_i2c_write_u8(slave_subgp,
value, info->base + offset);
}
/*----------------------------------------------------------------------*/
/* generic power resource operations, which work on all regulators */
static int twlreg_grp(struct regulator_dev *rdev)
{
return twlreg_read(rdev_get_drvdata(rdev), TWL_MODULE_PM_RECEIVER,
VREG_GRP);
}
/*
* Enable/disable regulators by joining/leaving the P1 (processor) group.
* We assume nobody else is updating the DEV_GRP registers.
*/
/* definition for 4030 family */
#define P3_GRP_4030 BIT(7) /* "peripherals" */
#define P2_GRP_4030 BIT(6) /* secondary processor, modem, etc */
#define P1_GRP_4030 BIT(5) /* CPU/Linux */
/* definition for 6030 family */
#define P3_GRP_6030 BIT(2) /* secondary processor, modem, etc */
#define P2_GRP_6030 BIT(1) /* "peripherals" */
#define P1_GRP_6030 BIT(0) /* CPU/Linux */
static int twl4030reg_is_enabled(struct regulator_dev *rdev)
{
int state = twlreg_grp(rdev);
if (state < 0)
return state;
return state & P1_GRP_4030;
}
static int twl6030reg_is_enabled(struct regulator_dev *rdev)
{
struct twlreg_info *info = rdev_get_drvdata(rdev);
int grp = 0, val;
if (!(twl_class_is_6030() && (info->features & TWL6032_SUBCLASS))) {
grp = twlreg_grp(rdev);
if (grp < 0)
return grp;
grp &= P1_GRP_6030;
} else {
grp = 1;
}
val = twlreg_read(info, TWL_MODULE_PM_RECEIVER, VREG_STATE);
val = TWL6030_CFG_STATE_APP(val);
return grp && (val == TWL6030_CFG_STATE_ON);
}
static int twl4030reg_enable(struct regulator_dev *rdev)
{
struct twlreg_info *info = rdev_get_drvdata(rdev);
int grp;
int ret;
grp = twlreg_grp(rdev);
if (grp < 0)
return grp;
grp |= P1_GRP_4030;
ret = twlreg_write(info, TWL_MODULE_PM_RECEIVER, VREG_GRP, grp);
return ret;
}
static int twl6030reg_enable(struct regulator_dev *rdev)
{
struct twlreg_info *info = rdev_get_drvdata(rdev);
int grp = 0;
int ret;
if (!(twl_class_is_6030() && (info->features & TWL6032_SUBCLASS)))
grp = twlreg_grp(rdev);
if (grp < 0)
return grp;
ret = twlreg_write(info, TWL_MODULE_PM_RECEIVER, VREG_STATE,
grp << TWL6030_CFG_STATE_GRP_SHIFT |
TWL6030_CFG_STATE_ON);
return ret;
}
static int twl4030reg_disable(struct regulator_dev *rdev)
{
struct twlreg_info *info = rdev_get_drvdata(rdev);
int grp;
int ret;
grp = twlreg_grp(rdev);
if (grp < 0)
return grp;
grp &= ~(P1_GRP_4030 | P2_GRP_4030 | P3_GRP_4030);
ret = twlreg_write(info, TWL_MODULE_PM_RECEIVER, VREG_GRP, grp);
return ret;
}
static int twl6030reg_disable(struct regulator_dev *rdev)
{
struct twlreg_info *info = rdev_get_drvdata(rdev);
int grp = 0;
int ret;
if (!(twl_class_is_6030() && (info->features & TWL6032_SUBCLASS)))
grp = P1_GRP_6030 | P2_GRP_6030 | P3_GRP_6030;
/* For 6030, set the off state for all grps enabled */
ret = twlreg_write(info, TWL_MODULE_PM_RECEIVER, VREG_STATE,
(grp) << TWL6030_CFG_STATE_GRP_SHIFT |
TWL6030_CFG_STATE_OFF);
return ret;
}
static int twl4030reg_get_status(struct regulator_dev *rdev)
{
int state = twlreg_grp(rdev);
if (state < 0)
return state;
state &= 0x0f;
/* assume state != WARM_RESET; we'd not be running... */
if (!state)
return REGULATOR_STATUS_OFF;
return (state & BIT(3))
? REGULATOR_STATUS_NORMAL
: REGULATOR_STATUS_STANDBY;
}
static int twl6030reg_get_status(struct regulator_dev *rdev)
{
struct twlreg_info *info = rdev_get_drvdata(rdev);
int val;
val = twlreg_grp(rdev);
if (val < 0)
return val;
val = twlreg_read(info, TWL_MODULE_PM_RECEIVER, VREG_STATE);
switch (TWL6030_CFG_STATE_APP(val)) {
case TWL6030_CFG_STATE_ON:
return REGULATOR_STATUS_NORMAL;
case TWL6030_CFG_STATE_SLEEP:
return REGULATOR_STATUS_STANDBY;
case TWL6030_CFG_STATE_OFF:
case TWL6030_CFG_STATE_OFF2:
default:
break;
}
return REGULATOR_STATUS_OFF;
}
static int twl4030reg_set_mode(struct regulator_dev *rdev, unsigned mode)
{
struct twlreg_info *info = rdev_get_drvdata(rdev);
unsigned message;
int status;
/* We can only set the mode through state machine commands... */
switch (mode) {
case REGULATOR_MODE_NORMAL:
message = MSG_SINGULAR(DEV_GRP_P1, info->id, RES_STATE_ACTIVE);
break;
case REGULATOR_MODE_STANDBY:
message = MSG_SINGULAR(DEV_GRP_P1, info->id, RES_STATE_SLEEP);
break;
default:
return -EINVAL;
}
/* Ensure the resource is associated with some group */
status = twlreg_grp(rdev);
if (status < 0)
return status;
if (!(status & (P3_GRP_4030 | P2_GRP_4030 | P1_GRP_4030)))
return -EACCES;
status = twl_i2c_write_u8(TWL_MODULE_PM_MASTER,
message >> 8, TWL4030_PM_MASTER_PB_WORD_MSB);
if (status < 0)
return status;
return twl_i2c_write_u8(TWL_MODULE_PM_MASTER,
message & 0xff, TWL4030_PM_MASTER_PB_WORD_LSB);
}
static int twl6030reg_set_mode(struct regulator_dev *rdev, unsigned mode)
{
struct twlreg_info *info = rdev_get_drvdata(rdev);
int grp = 0;
int val;
if (!(twl_class_is_6030() && (info->features & TWL6032_SUBCLASS)))
grp = twlreg_grp(rdev);
if (grp < 0)
return grp;
/* Compose the state register settings */
val = grp << TWL6030_CFG_STATE_GRP_SHIFT;
/* We can only set the mode through state machine commands... */
switch (mode) {
case REGULATOR_MODE_NORMAL:
val |= TWL6030_CFG_STATE_ON;
break;
case REGULATOR_MODE_STANDBY:
val |= TWL6030_CFG_STATE_SLEEP;
break;
default:
return -EINVAL;
}
return twlreg_write(info, TWL_MODULE_PM_RECEIVER, VREG_STATE, val);
}
/*----------------------------------------------------------------------*/
/*
* Support for adjustable-voltage LDOs uses a four bit (or less) voltage
* select field in its control register. We use tables indexed by VSEL
* to record voltages in milliVolts. (Accuracy is about three percent.)
*
* Note that VSEL values for VAUX2 changed in twl5030 and newer silicon;
* currently handled by listing two slightly different VAUX2 regulators,
* only one of which will be configured.
*
* VSEL values documented as "TI cannot support these values" are flagged
* in these tables as UNSUP() values; we normally won't assign them.
*
* VAUX3 at 3V is incorrectly listed in some TI manuals as unsupported.
* TI are revising the twl5030/tps659x0 specs to support that 3.0V setting.
*/
#define UNSUP_MASK 0x8000
#define UNSUP(x) (UNSUP_MASK | (x))
#define IS_UNSUP(info, x) \
((UNSUP_MASK & (x)) && \
!((info)->features & TWL4030_ALLOW_UNSUPPORTED))
#define LDO_MV(x) (~UNSUP_MASK & (x))
static const u16 VAUX1_VSEL_table[] = {
UNSUP(1500), UNSUP(1800), 2500, 2800,
3000, 3000, 3000, 3000,
};
static const u16 VAUX2_4030_VSEL_table[] = {
UNSUP(1000), UNSUP(1000), UNSUP(1200), 1300,
1500, 1800, UNSUP(1850), 2500,
UNSUP(2600), 2800, UNSUP(2850), UNSUP(3000),
UNSUP(3150), UNSUP(3150), UNSUP(3150), UNSUP(3150),
};
static const u16 VAUX2_VSEL_table[] = {
1700, 1700, 1900, 1300,
1500, 1800, 2000, 2500,
2100, 2800, 2200, 2300,
2400, 2400, 2400, 2400,
};
static const u16 VAUX3_VSEL_table[] = {
1500, 1800, 2500, 2800,
3000, 3000, 3000, 3000,
};
static const u16 VAUX4_VSEL_table[] = {
700, 1000, 1200, UNSUP(1300),
1500, 1800, UNSUP(1850), 2500,
UNSUP(2600), 2800, UNSUP(2850), UNSUP(3000),
UNSUP(3150), UNSUP(3150), UNSUP(3150), UNSUP(3150),
};
static const u16 VMMC1_VSEL_table[] = {
1850, 2850, 3000, 3150,
};
static const u16 VMMC2_VSEL_table[] = {
UNSUP(1000), UNSUP(1000), UNSUP(1200), UNSUP(1300),
UNSUP(1500), UNSUP(1800), 1850, UNSUP(2500),
2600, 2800, 2850, 3000,
3150, 3150, 3150, 3150,
};
static const u16 VPLL1_VSEL_table[] = {
1000, 1200, 1300, 1800,
UNSUP(2800), UNSUP(3000), UNSUP(3000), UNSUP(3000),
};
static const u16 VPLL2_VSEL_table[] = {
700, 1000, 1200, 1300,
UNSUP(1500), 1800, UNSUP(1850), UNSUP(2500),
UNSUP(2600), UNSUP(2800), UNSUP(2850), UNSUP(3000),
UNSUP(3150), UNSUP(3150), UNSUP(3150), UNSUP(3150),
};
static const u16 VSIM_VSEL_table[] = {
UNSUP(1000), UNSUP(1200), UNSUP(1300), 1800,
2800, 3000, 3000, 3000,
};
static const u16 VDAC_VSEL_table[] = {
1200, 1300, 1800, 1800,
};
static const u16 VIO_VSEL_table[] = {
1800, 1850,
};
static const u16 VINTANA2_VSEL_table[] = {
2500, 2750,
};
static int twl4030ldo_list_voltage(struct regulator_dev *rdev, unsigned index)
{
struct twlreg_info *info = rdev_get_drvdata(rdev);
int mV = info->table[index];
return IS_UNSUP(info, mV) ? 0 : (LDO_MV(mV) * 1000);
}
static int
twl4030ldo_set_voltage_sel(struct regulator_dev *rdev, unsigned selector)
{
struct twlreg_info *info = rdev_get_drvdata(rdev);
return twlreg_write(info, TWL_MODULE_PM_RECEIVER, VREG_VOLTAGE,
selector);
}
static int twl4030ldo_get_voltage_sel(struct regulator_dev *rdev)
{
struct twlreg_info *info = rdev_get_drvdata(rdev);
int vsel = twlreg_read(info, TWL_MODULE_PM_RECEIVER, VREG_VOLTAGE);
if (vsel < 0)
return vsel;
vsel &= info->table_len - 1;
return vsel;
}
static struct regulator_ops twl4030ldo_ops = {
.list_voltage = twl4030ldo_list_voltage,
.set_voltage_sel = twl4030ldo_set_voltage_sel,
.get_voltage_sel = twl4030ldo_get_voltage_sel,
.enable = twl4030reg_enable,
.disable = twl4030reg_disable,
.is_enabled = twl4030reg_is_enabled,
.set_mode = twl4030reg_set_mode,
.get_status = twl4030reg_get_status,
};
static int
twl4030smps_set_voltage(struct regulator_dev *rdev, int min_uV, int max_uV,
unsigned *selector)
{
struct twlreg_info *info = rdev_get_drvdata(rdev);
int vsel = DIV_ROUND_UP(min_uV - 600000, 12500);
if (info->set_voltage) {
return info->set_voltage(info->data, min_uV);
} else {
twlreg_write(info, TWL_MODULE_PM_RECEIVER,
VREG_VOLTAGE_SMPS_4030, vsel);
}
return 0;
}
static int twl4030smps_get_voltage(struct regulator_dev *rdev)
{
struct twlreg_info *info = rdev_get_drvdata(rdev);
int vsel;
if (info->get_voltage)
return info->get_voltage(info->data);
vsel = twlreg_read(info, TWL_MODULE_PM_RECEIVER,
VREG_VOLTAGE_SMPS_4030);
return vsel * 12500 + 600000;
}
static struct regulator_ops twl4030smps_ops = {
.set_voltage = twl4030smps_set_voltage,
.get_voltage = twl4030smps_get_voltage,
};
static int twl6030coresmps_set_voltage(struct regulator_dev *rdev, int min_uV,
int max_uV, unsigned *selector)
{
struct twlreg_info *info = rdev_get_drvdata(rdev);
if (info->set_voltage)
return info->set_voltage(info->data, min_uV);
return -ENODEV;
}
static int twl6030coresmps_get_voltage(struct regulator_dev *rdev)
{
struct twlreg_info *info = rdev_get_drvdata(rdev);
if (info->get_voltage)
return info->get_voltage(info->data);
return -ENODEV;
}
static struct regulator_ops twl6030coresmps_ops = {
.set_voltage = twl6030coresmps_set_voltage,
.get_voltage = twl6030coresmps_get_voltage,
};
static int twl6030ldo_list_voltage(struct regulator_dev *rdev, unsigned sel)
{
struct twlreg_info *info = rdev_get_drvdata(rdev);
switch (sel) {
case 0:
return 0;
case 1 ... 24:
/* Linear mapping from 00000001 to 00011000:
* Absolute voltage value = 1.0 V + 0.1 V × (sel 00000001)
*/
return (info->min_mV + 100 * (sel - 1)) * 1000;
case 25 ... 30:
return -EINVAL;
case 31:
return 2750000;
default:
return -EINVAL;
}
}
static int
twl6030ldo_set_voltage_sel(struct regulator_dev *rdev, unsigned selector)
{
struct twlreg_info *info = rdev_get_drvdata(rdev);
return twlreg_write(info, TWL_MODULE_PM_RECEIVER, VREG_VOLTAGE,
selector);
}
static int twl6030ldo_get_voltage_sel(struct regulator_dev *rdev)
{
struct twlreg_info *info = rdev_get_drvdata(rdev);
int vsel = twlreg_read(info, TWL_MODULE_PM_RECEIVER, VREG_VOLTAGE);
return vsel;
}
static struct regulator_ops twl6030ldo_ops = {
.list_voltage = twl6030ldo_list_voltage,
.set_voltage_sel = twl6030ldo_set_voltage_sel,
.get_voltage_sel = twl6030ldo_get_voltage_sel,
.enable = twl6030reg_enable,
.disable = twl6030reg_disable,
.is_enabled = twl6030reg_is_enabled,
.set_mode = twl6030reg_set_mode,
.get_status = twl6030reg_get_status,
};
/*----------------------------------------------------------------------*/
static struct regulator_ops twl4030fixed_ops = {
.list_voltage = regulator_list_voltage_linear,
.enable = twl4030reg_enable,
.disable = twl4030reg_disable,
.is_enabled = twl4030reg_is_enabled,
.set_mode = twl4030reg_set_mode,
.get_status = twl4030reg_get_status,
};
static struct regulator_ops twl6030fixed_ops = {
.list_voltage = regulator_list_voltage_linear,
.enable = twl6030reg_enable,
.disable = twl6030reg_disable,
.is_enabled = twl6030reg_is_enabled,
.set_mode = twl6030reg_set_mode,
.get_status = twl6030reg_get_status,
};
/*
* SMPS status and control
*/
static int twl6030smps_list_voltage(struct regulator_dev *rdev, unsigned index)
{
struct twlreg_info *info = rdev_get_drvdata(rdev);
int voltage = 0;
switch (info->flags) {
case SMPS_OFFSET_EN:
voltage = 100000;
/* fall through */
case 0:
switch (index) {
case 0:
voltage = 0;
break;
case 58:
voltage = 1350 * 1000;
break;
case 59:
voltage = 1500 * 1000;
break;
case 60:
voltage = 1800 * 1000;
break;
case 61:
voltage = 1900 * 1000;
break;
case 62:
voltage = 2100 * 1000;
break;
default:
voltage += (600000 + (12500 * (index - 1)));
}
break;
case SMPS_EXTENDED_EN:
switch (index) {
case 0:
voltage = 0;
break;
case 58:
voltage = 2084 * 1000;
break;
case 59:
voltage = 2315 * 1000;
break;
case 60:
voltage = 2778 * 1000;
break;
case 61:
voltage = 2932 * 1000;
break;
case 62:
voltage = 3241 * 1000;
break;
default:
voltage = (1852000 + (38600 * (index - 1)));
}
break;
case SMPS_OFFSET_EN | SMPS_EXTENDED_EN:
switch (index) {
case 0:
voltage = 0;
break;
case 58:
voltage = 4167 * 1000;
break;
case 59:
voltage = 2315 * 1000;
break;
case 60:
voltage = 2778 * 1000;
break;
case 61:
voltage = 2932 * 1000;
break;
case 62:
voltage = 3241 * 1000;
break;
default:
voltage = (2161000 + (38600 * (index - 1)));
}
break;
}
return voltage;
}
static int twl6030smps_map_voltage(struct regulator_dev *rdev, int min_uV,
int max_uV)
{
struct twlreg_info *info = rdev_get_drvdata(rdev);
int vsel = 0;
switch (info->flags) {
case 0:
if (min_uV == 0)
vsel = 0;
else if ((min_uV >= 600000) && (min_uV <= 1300000)) {
vsel = DIV_ROUND_UP(min_uV - 600000, 12500);
vsel++;
}
/* Values 1..57 for vsel are linear and can be calculated
* values 58..62 are non linear.
*/
else if ((min_uV > 1900000) && (min_uV <= 2100000))
vsel = 62;
else if ((min_uV > 1800000) && (min_uV <= 1900000))
vsel = 61;
else if ((min_uV > 1500000) && (min_uV <= 1800000))
vsel = 60;
else if ((min_uV > 1350000) && (min_uV <= 1500000))
vsel = 59;
else if ((min_uV > 1300000) && (min_uV <= 1350000))
vsel = 58;
else
return -EINVAL;
break;
case SMPS_OFFSET_EN:
if (min_uV == 0)
vsel = 0;
else if ((min_uV >= 700000) && (min_uV <= 1420000)) {
vsel = DIV_ROUND_UP(min_uV - 700000, 12500);
vsel++;
}
/* Values 1..57 for vsel are linear and can be calculated
* values 58..62 are non linear.
*/
else if ((min_uV > 1900000) && (min_uV <= 2100000))
vsel = 62;
else if ((min_uV > 1800000) && (min_uV <= 1900000))
vsel = 61;
else if ((min_uV > 1350000) && (min_uV <= 1800000))
vsel = 60;
else if ((min_uV > 1350000) && (min_uV <= 1500000))
vsel = 59;
else if ((min_uV > 1300000) && (min_uV <= 1350000))
vsel = 58;
else
return -EINVAL;
break;
case SMPS_EXTENDED_EN:
if (min_uV == 0) {
vsel = 0;
} else if ((min_uV >= 1852000) && (max_uV <= 4013600)) {
vsel = DIV_ROUND_UP(min_uV - 1852000, 38600);
vsel++;
}
break;
case SMPS_OFFSET_EN|SMPS_EXTENDED_EN:
if (min_uV == 0) {
vsel = 0;
} else if ((min_uV >= 2161000) && (min_uV <= 4321000)) {
vsel = DIV_ROUND_UP(min_uV - 2161000, 38600);
vsel++;
}
break;
}
return vsel;
}
static int twl6030smps_set_voltage_sel(struct regulator_dev *rdev,
unsigned int selector)
{
struct twlreg_info *info = rdev_get_drvdata(rdev);
return twlreg_write(info, TWL_MODULE_PM_RECEIVER, VREG_VOLTAGE_SMPS,
selector);
}
static int twl6030smps_get_voltage_sel(struct regulator_dev *rdev)
{
struct twlreg_info *info = rdev_get_drvdata(rdev);
return twlreg_read(info, TWL_MODULE_PM_RECEIVER, VREG_VOLTAGE_SMPS);
}
static struct regulator_ops twlsmps_ops = {
.list_voltage = twl6030smps_list_voltage,
.map_voltage = twl6030smps_map_voltage,
.set_voltage_sel = twl6030smps_set_voltage_sel,
.get_voltage_sel = twl6030smps_get_voltage_sel,
.enable = twl6030reg_enable,
.disable = twl6030reg_disable,
.is_enabled = twl6030reg_is_enabled,
.set_mode = twl6030reg_set_mode,
.get_status = twl6030reg_get_status,
};
/*----------------------------------------------------------------------*/
#define TWL4030_FIXED_LDO(label, offset, mVolts, num, turnon_delay, \
remap_conf) \
TWL_FIXED_LDO(label, offset, mVolts, num, turnon_delay, \
remap_conf, TWL4030, twl4030fixed_ops)
#define TWL6030_FIXED_LDO(label, offset, mVolts, turnon_delay) \
TWL_FIXED_LDO(label, offset, mVolts, 0x0, turnon_delay, \
0x0, TWL6030, twl6030fixed_ops)
#define TWL4030_ADJUSTABLE_LDO(label, offset, num, turnon_delay, remap_conf) \
static const struct twlreg_info TWL4030_INFO_##label = { \
.base = offset, \
.id = num, \
.table_len = ARRAY_SIZE(label##_VSEL_table), \
.table = label##_VSEL_table, \
.remap = remap_conf, \
.desc = { \
.name = #label, \
.id = TWL4030_REG_##label, \
.n_voltages = ARRAY_SIZE(label##_VSEL_table), \
.ops = &twl4030ldo_ops, \
.type = REGULATOR_VOLTAGE, \
.owner = THIS_MODULE, \
.enable_time = turnon_delay, \
}, \
}
#define TWL4030_ADJUSTABLE_SMPS(label, offset, num, turnon_delay, remap_conf) \
static const struct twlreg_info TWL4030_INFO_##label = { \
.base = offset, \
.id = num, \
.remap = remap_conf, \
.desc = { \
.name = #label, \
.id = TWL4030_REG_##label, \
.ops = &twl4030smps_ops, \
.type = REGULATOR_VOLTAGE, \
.owner = THIS_MODULE, \
.enable_time = turnon_delay, \
}, \
}
#define TWL6030_ADJUSTABLE_SMPS(label) \
static const struct twlreg_info TWL6030_INFO_##label = { \
.desc = { \
.name = #label, \
.id = TWL6030_REG_##label, \
.ops = &twl6030coresmps_ops, \
.type = REGULATOR_VOLTAGE, \
.owner = THIS_MODULE, \
}, \
}
#define TWL6030_ADJUSTABLE_LDO(label, offset, min_mVolts, max_mVolts) \
static const struct twlreg_info TWL6030_INFO_##label = { \
.base = offset, \
.min_mV = min_mVolts, \
.max_mV = max_mVolts, \
.desc = { \
.name = #label, \
.id = TWL6030_REG_##label, \
.n_voltages = 32, \
.ops = &twl6030ldo_ops, \
.type = REGULATOR_VOLTAGE, \
.owner = THIS_MODULE, \
}, \
}
#define TWL6032_ADJUSTABLE_LDO(label, offset, min_mVolts, max_mVolts) \
static const struct twlreg_info TWL6032_INFO_##label = { \
.base = offset, \
.min_mV = min_mVolts, \
.max_mV = max_mVolts, \
.desc = { \
.name = #label, \
.id = TWL6032_REG_##label, \
.n_voltages = 32, \
.ops = &twl6030ldo_ops, \
.type = REGULATOR_VOLTAGE, \
.owner = THIS_MODULE, \
}, \
}
#define TWL_FIXED_LDO(label, offset, mVolts, num, turnon_delay, remap_conf, \
family, operations) \
static const struct twlreg_info TWLFIXED_INFO_##label = { \
.base = offset, \
.id = num, \
.min_mV = mVolts, \
.remap = remap_conf, \
.desc = { \
.name = #label, \
.id = family##_REG_##label, \
.n_voltages = 1, \
.ops = &operations, \
.type = REGULATOR_VOLTAGE, \
.owner = THIS_MODULE, \
.min_uV = mVolts * 1000, \
.enable_time = turnon_delay, \
}, \
}
#define TWL6032_ADJUSTABLE_SMPS(label, offset) \
static const struct twlreg_info TWLSMPS_INFO_##label = { \
.base = offset, \
.min_mV = 600, \
.max_mV = 2100, \
.desc = { \
.name = #label, \
.id = TWL6032_REG_##label, \
.n_voltages = 63, \
.ops = &twlsmps_ops, \
.type = REGULATOR_VOLTAGE, \
.owner = THIS_MODULE, \
}, \
}
/*
* We list regulators here if systems need some level of
* software control over them after boot.
*/
TWL4030_ADJUSTABLE_LDO(VAUX1, 0x17, 1, 100, 0x08);
TWL4030_ADJUSTABLE_LDO(VAUX2_4030, 0x1b, 2, 100, 0x08);
TWL4030_ADJUSTABLE_LDO(VAUX2, 0x1b, 2, 100, 0x08);
TWL4030_ADJUSTABLE_LDO(VAUX3, 0x1f, 3, 100, 0x08);
TWL4030_ADJUSTABLE_LDO(VAUX4, 0x23, 4, 100, 0x08);
TWL4030_ADJUSTABLE_LDO(VMMC1, 0x27, 5, 100, 0x08);
TWL4030_ADJUSTABLE_LDO(VMMC2, 0x2b, 6, 100, 0x08);
TWL4030_ADJUSTABLE_LDO(VPLL1, 0x2f, 7, 100, 0x00);
TWL4030_ADJUSTABLE_LDO(VPLL2, 0x33, 8, 100, 0x08);
TWL4030_ADJUSTABLE_LDO(VSIM, 0x37, 9, 100, 0x00);
TWL4030_ADJUSTABLE_LDO(VDAC, 0x3b, 10, 100, 0x08);
TWL4030_ADJUSTABLE_LDO(VINTANA2, 0x43, 12, 100, 0x08);
TWL4030_ADJUSTABLE_LDO(VIO, 0x4b, 14, 1000, 0x08);
TWL4030_ADJUSTABLE_SMPS(VDD1, 0x55, 15, 1000, 0x08);
TWL4030_ADJUSTABLE_SMPS(VDD2, 0x63, 16, 1000, 0x08);
/* VUSBCP is managed *only* by the USB subchip */
/* 6030 REG with base as PMC Slave Misc : 0x0030 */
/* Turnon-delay and remap configuration values for 6030 are not
verified since the specification is not public */
TWL6030_ADJUSTABLE_SMPS(VDD1);
TWL6030_ADJUSTABLE_SMPS(VDD2);
TWL6030_ADJUSTABLE_SMPS(VDD3);
TWL6030_ADJUSTABLE_LDO(VAUX1_6030, 0x54, 1000, 3300);
TWL6030_ADJUSTABLE_LDO(VAUX2_6030, 0x58, 1000, 3300);
TWL6030_ADJUSTABLE_LDO(VAUX3_6030, 0x5c, 1000, 3300);
TWL6030_ADJUSTABLE_LDO(VMMC, 0x68, 1000, 3300);
TWL6030_ADJUSTABLE_LDO(VPP, 0x6c, 1000, 3300);
TWL6030_ADJUSTABLE_LDO(VUSIM, 0x74, 1000, 3300);
/* 6025 are renamed compared to 6030 versions */
TWL6032_ADJUSTABLE_LDO(LDO2, 0x54, 1000, 3300);
TWL6032_ADJUSTABLE_LDO(LDO4, 0x58, 1000, 3300);
TWL6032_ADJUSTABLE_LDO(LDO3, 0x5c, 1000, 3300);
TWL6032_ADJUSTABLE_LDO(LDO5, 0x68, 1000, 3300);
TWL6032_ADJUSTABLE_LDO(LDO1, 0x6c, 1000, 3300);
TWL6032_ADJUSTABLE_LDO(LDO7, 0x74, 1000, 3300);
TWL6032_ADJUSTABLE_LDO(LDO6, 0x60, 1000, 3300);
TWL6032_ADJUSTABLE_LDO(LDOLN, 0x64, 1000, 3300);
TWL6032_ADJUSTABLE_LDO(LDOUSB, 0x70, 1000, 3300);
TWL4030_FIXED_LDO(VINTANA1, 0x3f, 1500, 11, 100, 0x08);
TWL4030_FIXED_LDO(VINTDIG, 0x47, 1500, 13, 100, 0x08);
TWL4030_FIXED_LDO(VUSB1V5, 0x71, 1500, 17, 100, 0x08);
TWL4030_FIXED_LDO(VUSB1V8, 0x74, 1800, 18, 100, 0x08);
TWL4030_FIXED_LDO(VUSB3V1, 0x77, 3100, 19, 150, 0x08);
TWL6030_FIXED_LDO(VANA, 0x50, 2100, 0);
TWL6030_FIXED_LDO(VCXIO, 0x60, 1800, 0);
TWL6030_FIXED_LDO(VDAC, 0x64, 1800, 0);
TWL6030_FIXED_LDO(VUSB, 0x70, 3300, 0);
TWL6030_FIXED_LDO(V1V8, 0x16, 1800, 0);
TWL6030_FIXED_LDO(V2V1, 0x1c, 2100, 0);
TWL6032_ADJUSTABLE_SMPS(SMPS3, 0x34);
TWL6032_ADJUSTABLE_SMPS(SMPS4, 0x10);
TWL6032_ADJUSTABLE_SMPS(VIO, 0x16);
static u8 twl_get_smps_offset(void)
{
u8 value;
twl_i2c_read_u8(TWL_MODULE_PM_RECEIVER, &value,
TWL6030_SMPS_OFFSET);
return value;
}
static u8 twl_get_smps_mult(void)
{
u8 value;
twl_i2c_read_u8(TWL_MODULE_PM_RECEIVER, &value,
TWL6030_SMPS_MULT);
return value;
}
#define TWL_OF_MATCH(comp, family, label) \
{ \
.compatible = comp, \
.data = &family##_INFO_##label, \
}
#define TWL4030_OF_MATCH(comp, label) TWL_OF_MATCH(comp, TWL4030, label)
#define TWL6030_OF_MATCH(comp, label) TWL_OF_MATCH(comp, TWL6030, label)
#define TWL6032_OF_MATCH(comp, label) TWL_OF_MATCH(comp, TWL6032, label)
#define TWLFIXED_OF_MATCH(comp, label) TWL_OF_MATCH(comp, TWLFIXED, label)
#define TWLSMPS_OF_MATCH(comp, label) TWL_OF_MATCH(comp, TWLSMPS, label)
static const struct of_device_id twl_of_match[] = {
TWL4030_OF_MATCH("ti,twl4030-vaux1", VAUX1),
TWL4030_OF_MATCH("ti,twl4030-vaux2", VAUX2_4030),
TWL4030_OF_MATCH("ti,twl5030-vaux2", VAUX2),
TWL4030_OF_MATCH("ti,twl4030-vaux3", VAUX3),
TWL4030_OF_MATCH("ti,twl4030-vaux4", VAUX4),
TWL4030_OF_MATCH("ti,twl4030-vmmc1", VMMC1),
TWL4030_OF_MATCH("ti,twl4030-vmmc2", VMMC2),
TWL4030_OF_MATCH("ti,twl4030-vpll1", VPLL1),
TWL4030_OF_MATCH("ti,twl4030-vpll2", VPLL2),
TWL4030_OF_MATCH("ti,twl4030-vsim", VSIM),
TWL4030_OF_MATCH("ti,twl4030-vdac", VDAC),
TWL4030_OF_MATCH("ti,twl4030-vintana2", VINTANA2),
TWL4030_OF_MATCH("ti,twl4030-vio", VIO),
TWL4030_OF_MATCH("ti,twl4030-vdd1", VDD1),
TWL4030_OF_MATCH("ti,twl4030-vdd2", VDD2),
TWL6030_OF_MATCH("ti,twl6030-vdd1", VDD1),
TWL6030_OF_MATCH("ti,twl6030-vdd2", VDD2),
TWL6030_OF_MATCH("ti,twl6030-vdd3", VDD3),
TWL6030_OF_MATCH("ti,twl6030-vaux1", VAUX1_6030),
TWL6030_OF_MATCH("ti,twl6030-vaux2", VAUX2_6030),
TWL6030_OF_MATCH("ti,twl6030-vaux3", VAUX3_6030),
TWL6030_OF_MATCH("ti,twl6030-vmmc", VMMC),
TWL6030_OF_MATCH("ti,twl6030-vpp", VPP),
TWL6030_OF_MATCH("ti,twl6030-vusim", VUSIM),
TWL6032_OF_MATCH("ti,twl6032-ldo2", LDO2),
TWL6032_OF_MATCH("ti,twl6032-ldo4", LDO4),
TWL6032_OF_MATCH("ti,twl6032-ldo3", LDO3),
TWL6032_OF_MATCH("ti,twl6032-ldo5", LDO5),
TWL6032_OF_MATCH("ti,twl6032-ldo1", LDO1),
TWL6032_OF_MATCH("ti,twl6032-ldo7", LDO7),
TWL6032_OF_MATCH("ti,twl6032-ldo6", LDO6),
TWL6032_OF_MATCH("ti,twl6032-ldoln", LDOLN),
TWL6032_OF_MATCH("ti,twl6032-ldousb", LDOUSB),
TWLFIXED_OF_MATCH("ti,twl4030-vintana1", VINTANA1),
TWLFIXED_OF_MATCH("ti,twl4030-vintdig", VINTDIG),
TWLFIXED_OF_MATCH("ti,twl4030-vusb1v5", VUSB1V5),
TWLFIXED_OF_MATCH("ti,twl4030-vusb1v8", VUSB1V8),
TWLFIXED_OF_MATCH("ti,twl4030-vusb3v1", VUSB3V1),
TWLFIXED_OF_MATCH("ti,twl6030-vana", VANA),
TWLFIXED_OF_MATCH("ti,twl6030-vcxio", VCXIO),
TWLFIXED_OF_MATCH("ti,twl6030-vdac", VDAC),
TWLFIXED_OF_MATCH("ti,twl6030-vusb", VUSB),
TWLFIXED_OF_MATCH("ti,twl6030-v1v8", V1V8),
TWLFIXED_OF_MATCH("ti,twl6030-v2v1", V2V1),
TWLSMPS_OF_MATCH("ti,twl6032-smps3", SMPS3),
TWLSMPS_OF_MATCH("ti,twl6032-smps4", SMPS4),
TWLSMPS_OF_MATCH("ti,twl6032-vio", VIO),
{},
};
MODULE_DEVICE_TABLE(of, twl_of_match);
static int twlreg_probe(struct platform_device *pdev)
{
int i, id;
struct twlreg_info *info;
const struct twlreg_info *template;
struct regulator_init_data *initdata;
struct regulation_constraints *c;
struct regulator_dev *rdev;
struct twl_regulator_driver_data *drvdata;
const struct of_device_id *match;
struct regulator_config config = { };
match = of_match_device(twl_of_match, &pdev->dev);
if (match) {
template = match->data;
id = template->desc.id;
initdata = of_get_regulator_init_data(&pdev->dev,
pdev->dev.of_node,
&template->desc);
drvdata = NULL;
} else {
id = pdev->id;
initdata = dev_get_platdata(&pdev->dev);
for (i = 0, template = NULL; i < ARRAY_SIZE(twl_of_match); i++) {
template = twl_of_match[i].data;
if (template && template->desc.id == id)
break;
}
if (i == ARRAY_SIZE(twl_of_match))
return -ENODEV;
drvdata = initdata->driver_data;
if (!drvdata)
return -EINVAL;
}
if (!template)
return -ENODEV;
if (!initdata)
return -EINVAL;
info = devm_kmemdup(&pdev->dev, template, sizeof(*info), GFP_KERNEL);
if (!info)
return -ENOMEM;
if (drvdata) {
/* copy the driver data into regulator data */
info->features = drvdata->features;
info->data = drvdata->data;
info->set_voltage = drvdata->set_voltage;
info->get_voltage = drvdata->get_voltage;
}
/* Constrain board-specific capabilities according to what
* this driver and the chip itself can actually do.
*/
c = &initdata->constraints;
c->valid_modes_mask &= REGULATOR_MODE_NORMAL | REGULATOR_MODE_STANDBY;
c->valid_ops_mask &= REGULATOR_CHANGE_VOLTAGE
| REGULATOR_CHANGE_MODE
| REGULATOR_CHANGE_STATUS;
switch (id) {
case TWL4030_REG_VIO:
case TWL4030_REG_VDD1:
case TWL4030_REG_VDD2:
case TWL4030_REG_VPLL1:
case TWL4030_REG_VINTANA1:
case TWL4030_REG_VINTANA2:
case TWL4030_REG_VINTDIG:
c->always_on = true;
break;
default:
break;
}
switch (id) {
case TWL6032_REG_SMPS3:
if (twl_get_smps_mult() & SMPS_MULTOFFSET_SMPS3)
info->flags |= SMPS_EXTENDED_EN;
if (twl_get_smps_offset() & SMPS_MULTOFFSET_SMPS3)
info->flags |= SMPS_OFFSET_EN;
break;
case TWL6032_REG_SMPS4:
if (twl_get_smps_mult() & SMPS_MULTOFFSET_SMPS4)
info->flags |= SMPS_EXTENDED_EN;
if (twl_get_smps_offset() & SMPS_MULTOFFSET_SMPS4)
info->flags |= SMPS_OFFSET_EN;
break;
case TWL6032_REG_VIO:
if (twl_get_smps_mult() & SMPS_MULTOFFSET_VIO)
info->flags |= SMPS_EXTENDED_EN;
if (twl_get_smps_offset() & SMPS_MULTOFFSET_VIO)
info->flags |= SMPS_OFFSET_EN;
break;
}
config.dev = &pdev->dev;
config.init_data = initdata;
config.driver_data = info;
config.of_node = pdev->dev.of_node;
rdev = devm_regulator_register(&pdev->dev, &info->desc, &config);
if (IS_ERR(rdev)) {
dev_err(&pdev->dev, "can't register %s, %ld\n",
info->desc.name, PTR_ERR(rdev));
return PTR_ERR(rdev);
}
platform_set_drvdata(pdev, rdev);
if (twl_class_is_4030())
twlreg_write(info, TWL_MODULE_PM_RECEIVER, VREG_REMAP,
info->remap);
/* NOTE: many regulators support short-circuit IRQs (presentable
* as REGULATOR_OVER_CURRENT notifications?) configured via:
* - SC_CONFIG
* - SC_DETECT1 (vintana2, vmmc1/2, vaux1/2/3/4)
* - SC_DETECT2 (vusb, vdac, vio, vdd1/2, vpll2)
* - IT_CONFIG
*/
return 0;
}
MODULE_ALIAS("platform:twl_reg");
static struct platform_driver twlreg_driver = {
.probe = twlreg_probe,
/* NOTE: short name, to work around driver model truncation of
* "twl_regulator.12" (and friends) to "twl_regulator.1".
*/
.driver = {
.name = "twl_reg",
.of_match_table = of_match_ptr(twl_of_match),
},
};
static int __init twlreg_init(void)
{
return platform_driver_register(&twlreg_driver);
}
subsys_initcall(twlreg_init);
static void __exit twlreg_exit(void)
{
platform_driver_unregister(&twlreg_driver);
}
module_exit(twlreg_exit)
MODULE_DESCRIPTION("TWL regulator driver");
MODULE_LICENSE("GPL");