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regulator: AB3100 support

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This adds support for the regulators found in the AB3100
Mixed-Signal IC.

It further also defines platform data for the ST-Ericsson
U300 platform and extends the AB3100 MFD driver so that
platform/board data with regulation constraints and an init
function can be passed down all the way from the board to
the regulators.

Signed-off-by: Linus Walleij <linus.walleij@stericsson.com>
Acked-by: Mark Brown <broonie@opensource.wolfsonmicro.com>
Signed-off-by: Liam Girdwood <lrg@slimlogic.co.uk>
Signed-off-by: Samuel Ortiz <sameo@linux.intel.com>
This commit is contained in:
Linus Walleij
2009-09-09 11:31:00 +02:00
committed by Samuel Ortiz
parent bd207cfb00
commit d619bc143e
5 changed files with 736 additions and 0 deletions
Download Patch File Download Diff File Expand all files Collapse all files
drivers/mfd/ab3100-core.c
+4
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@@ -837,6 +837,8 @@ static int __init ab3100_probe(struct i2c_client *client,
const struct i2c_device_id *id)
{
struct ab3100 *ab3100;
struct ab3100_platform_data *ab3100_plf_data =
client->dev.platform_data;
int err;
int i;
@@ -920,6 +922,8 @@ static int __init ab3100_probe(struct i2c_client *client,
for (i = 0; i < ARRAY_SIZE(ab3100_platform_devs); i++) {
ab3100_platform_devs[i]->dev.parent =
&client->dev;
ab3100_platform_devs[i]->dev.platform_data =
ab3100_plf_data;
platform_set_drvdata(ab3100_platform_devs[i], ab3100);
}
drivers/regulator/Kconfig
+9
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@@ -138,5 +138,14 @@ config REGULATOR_MC13783
Say y here to support the regulators found on the Freescale MC13783
PMIC.
config REGULATOR_AB3100
tristate "ST-Ericsson AB3100 Regulator functions"
depends on AB3100_CORE
default y if AB3100_CORE
help
These regulators correspond to functionality in the
AB3100 analog baseband dealing with power regulators
for the system.
endif
drivers/regulator/Makefile
+1
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@@ -21,5 +21,6 @@ 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
obj-$(CONFIG_REGULATOR_AB3100) += ab3100.o
ccflags-$(CONFIG_REGULATOR_DEBUG) += -DDEBUG
drivers/regulator/ab3100.c
+694
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File diff suppressed because it is too large Load Diff
include/linux/mfd/ab3100.h
+28
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@@ -7,6 +7,7 @@
#include <linux/device.h>
#include <linux/workqueue.h>
#include <linux/regulator/machine.h>
#ifndef MFD_AB3100_H
#define MFD_AB3100_H
@@ -57,6 +58,14 @@
#define AB3100_STR_BATT_REMOVAL (0x40)
#define AB3100_STR_VBUS (0x80)
/*
* AB3100 contains 8 regulators, one external regulator controller
* and a buck converter, further the LDO E and buck converter can
* have separate settings if they are in sleep mode, this is
* modeled as a separate regulator.
*/
#define AB3100_NUM_REGULATORS 10
/**
* struct ab3100
* @access_mutex: lock out concurrent accesses to the AB3100 registers
@@ -87,6 +96,25 @@ struct ab3100 {
bool startup_events_read;
};
/**
* struct ab3100_platform_data
* Data supplied to initialize board connections to the AB3100
* @reg_constraints: regulator constraints for target board
* the order of these constraints are: LDO A, C, D, E,
* F, G, H, K, EXT and BUCK.
* @reg_initvals: initial values for the regulator registers
* plus two sleep settings for LDO E and the BUCK converter.
* exactly AB3100_NUM_REGULATORS+2 values must be sent in.
* Order: LDO A, C, E, E sleep, F, G, H, K, EXT, BUCK,
* BUCK sleep, LDO D. (LDO D need to be initialized last.)
* @external_voltage: voltage level of the external regulator.
*/
struct ab3100_platform_data {
struct regulator_init_data reg_constraints[AB3100_NUM_REGULATORS];
u8 reg_initvals[AB3100_NUM_REGULATORS+2];
int external_voltage;
};
int ab3100_set_register_interruptible(struct ab3100 *ab3100, u8 reg, u8 regval);
int ab3100_get_register_interruptible(struct ab3100 *ab3100, u8 reg, u8 *regval);
int ab3100_get_register_page_interruptible(struct ab3100 *ab3100,