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authorRoger Quadros <ext-roger.quadros@nokia.com>2009-08-06 19:37:29 +0300
committerLiam Girdwood <lrg@slimlogic.co.uk>2009-09-22 13:32:41 +0100
commit86d9884b6a3646bc24e57430f1f694c5171c1bf6 (patch)
tree958c38b9538a53ac0a638bce9ebf5faf595e95c3 /include/linux/regulator
parenta6576cff1801e2f1a9f328f02bd4cbcab7b03f91 (diff)
regulator: Add GPIO enable control to fixed voltage regulator driver
Now fixed regulators that have their enable pin connected to a GPIO line can use the fixed regulator driver for regulator enable/disable control. The GPIO number and polarity information is passed through platform data. GPIO enable control is achieved using gpiolib. Signed-off-by: Roger Quadros <ext-roger.quadros@nokia.com> Reviewed-by: Philipp Zabel <philipp.zabel@gmail.com> Reviewed-by: Felipe Balbi <felipe.balbi@nokia.com> Acked-by: Mark Brown <broonie@opensource.wolfsonmicro.com> Signed-off-by: Liam Girdwood <lrg@slimlogic.co.uk>
Diffstat (limited to 'include/linux/regulator')
-rw-r--r--include/linux/regulator/fixed.h24
1 files changed, 24 insertions, 0 deletions
diff --git a/include/linux/regulator/fixed.h b/include/linux/regulator/fixed.h
index 91b4da31f1b..e94a4a1c7c8 100644
--- a/include/linux/regulator/fixed.h
+++ b/include/linux/regulator/fixed.h
@@ -5,6 +5,9 @@
*
* Author: Mark Brown <broonie@opensource.wolfsonmicro.com>
*
+ * Copyright (c) 2009 Nokia Corporation
+ * Roger Quadros <ext-roger.quadros@nokia.com>
+ *
* 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
@@ -16,9 +19,30 @@
struct regulator_init_data;
+/**
+ * struct fixed_voltage_config - fixed_voltage_config structure
+ * @supply_name: Name of the regulator supply
+ * @microvolts: Output voltage of regulator
+ * @gpio: GPIO to use for enable control
+ * set to -EINVAL if not used
+ * @enable_high: Polarity of enable GPIO
+ * 1 = Active high, 0 = Active low
+ * @enabled_at_boot: Whether regulator has been enabled at
+ * boot or not. 1 = Yes, 0 = No
+ * This is used to keep the regulator at
+ * the default state
+ * @init_data: regulator_init_data
+ *
+ * This structure contains fixed voltage regulator configuration
+ * information that must be passed by platform code to the fixed
+ * voltage regulator driver.
+ */
struct fixed_voltage_config {
const char *supply_name;
int microvolts;
+ int gpio;
+ unsigned enable_high:1;
+ unsigned enabled_at_boot:1;
struct regulator_init_data *init_data;
};