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authorLinus Walleij <linus.walleij@stericsson.com>2009-09-09 11:31:00 +0200
committerSamuel Ortiz <sameo@linux.intel.com>2009-09-17 09:47:25 +0200
commitd619bc143e311a738113dbbe7792bd032403939f (patch)
treef5a7bebf4058761a223dba7ffc7057d70d17245b /include/linux/mfd
parentbd207cfb0011389d55827b3f3181c60e8c3c7148 (diff)
regulator: AB3100 support
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>
Diffstat (limited to 'include/linux/mfd')
-rw-r--r--include/linux/mfd/ab3100.h28
1 files changed, 28 insertions, 0 deletions
diff --git a/include/linux/mfd/ab3100.h b/include/linux/mfd/ab3100.h
index 3ead5cfb638..e9aa4c9d749 100644
--- a/include/linux/mfd/ab3100.h
+++ b/include/linux/mfd/ab3100.h
@@ -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,