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regulator: Support MAX8998/LP3974 DVS-GPIO

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The previous driver did not support BUCK1-DVS3, BUCK1-DVS4, and
BUCK2-DVS2 modes. This patch adds such modes and an option to block
setting buck1/2 voltages out of the preset values.

Signed-off-by: MyungJoo Ham <myungjoo.ham@samsung.com>
Signed-off-by: Kyungmin Park <kyungmin.park@samsung.com>
Acked-by: Mark Brown <broonie@opensource.wolfsonmicro.com>
Signed-off-by: Samuel Ortiz <sameo@linux.intel.com>
This commit is contained in:
MyungJoo Ham 2011-01-11 12:20:05 +01:00 • committed by Samuel Ortiz
parent 337ce5d1c5
commit 735a3d9efd
2 changed files with 87 additions and 26 deletions
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26
include/linux/mfd/max8998.h
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@ -70,12 +70,20 @@ struct max8998_regulator_data {
* @num_regulators: number of regultors used
* @irq_base: base IRQ number for max8998, required for IRQs
* @ono: power onoff IRQ number for max8998
* @buck1_max_voltage1: BUCK1 maximum alowed voltage register 1
* @buck1_max_voltage2: BUCK1 maximum alowed voltage register 2
* @buck2_max_voltage: BUCK2 maximum alowed voltage
* @buck_voltage_lock: Do NOT change the values of the following six
* registers set by buck?_voltage?. The voltage of BUCK1/2 cannot
* be other than the preset values.
* @buck1_voltage1: BUCK1 DVS mode 1 voltage register
* @buck1_voltage2: BUCK1 DVS mode 2 voltage register
* @buck1_voltage3: BUCK1 DVS mode 3 voltage register
* @buck1_voltage4: BUCK1 DVS mode 4 voltage register
* @buck2_voltage1: BUCK2 DVS mode 1 voltage register
* @buck2_voltage2: BUCK2 DVS mode 2 voltage register
* @buck1_set1: BUCK1 gpio pin 1 to set output voltage
* @buck1_set2: BUCK1 gpio pin 2 to set output voltage
* @buck1_default_idx: Default for BUCK1 gpio pin 1, 2
* @buck2_set3: BUCK2 gpio pin to set output voltage
* @buck2_default_idx: Default for BUCK2 gpio pin.
* @wakeup: Allow to wake up from suspend
* @rtc_delay: LP3974 RTC chip bug that requires delay after a register
* write before reading it.
@ -85,12 +93,18 @@ struct max8998_platform_data {
int num_regulators;
int irq_base;
int ono;
int buck1_max_voltage1;
int buck1_max_voltage2;
int buck2_max_voltage;
bool buck_voltage_lock;
int buck1_voltage1;
int buck1_voltage2;
int buck1_voltage3;
int buck1_voltage4;
int buck2_voltage1;
int buck2_voltage2;
int buck1_set1;
int buck1_set2;
int buck1_default_idx;
int buck2_set3;
int buck2_default_idx;
bool wakeup;
bool rtc_delay;
};