From 22a10bca280073f81e9e2d9fed6f90a3bcf00236 Mon Sep 17 00:00:00 2001 From: Stephen Boyd Date: Thu, 11 Jun 2015 17:37:03 -0700 Subject: regulator: Add system_load constraint Some regulators have a fixed load that isn't captured by consumers that the kernel knows about. Add a constraint to support this. Signed-off-by: Stephen Boyd Signed-off-by: Mark Brown --- include/linux/regulator/machine.h | 3 +++ 1 file changed, 3 insertions(+) (limited to 'include/linux') diff --git a/include/linux/regulator/machine.h b/include/linux/regulator/machine.h index b07562e082c4..01526559c8c3 100644 --- a/include/linux/regulator/machine.h +++ b/include/linux/regulator/machine.h @@ -75,6 +75,7 @@ struct regulator_state { * * @min_uA: Smallest current consumers may set. * @max_uA: Largest current consumers may set. + * @system_load: Load that isn't captured by any consumer requests. * * @valid_modes_mask: Mask of modes which may be configured by consumers. * @valid_ops_mask: Operations which may be performed by consumers. @@ -112,6 +113,8 @@ struct regulation_constraints { int min_uA; int max_uA; + int system_load; + /* valid regulator operating modes for this machine */ unsigned int valid_modes_mask; -- cgit v1.2.3 From 23c779b9f9161d6568d3b2fca06e70ad182c480c Mon Sep 17 00:00:00 2001 From: Stephen Boyd Date: Thu, 11 Jun 2015 17:37:04 -0700 Subject: regulator: Add pull down support Some regulators need to be configured to pull down a resistor when the regulator is disabled. Add an op (set_pull_down) and a DT property + constraint to support this. Signed-off-by: Stephen Boyd Signed-off-by: Mark Brown --- include/linux/regulator/driver.h | 5 +++++ include/linux/regulator/machine.h | 2 ++ 2 files changed, 7 insertions(+) (limited to 'include/linux') diff --git a/include/linux/regulator/driver.h b/include/linux/regulator/driver.h index fffa688ac3a7..76144a337ff7 100644 --- a/include/linux/regulator/driver.h +++ b/include/linux/regulator/driver.h @@ -121,6 +121,9 @@ struct regulator_linear_range { * @set_suspend_mode: Set the operating mode for the regulator when the * system is suspended. * + * @set_pull_down: Configure the regulator to pull down when the regulator + * is disabled. + * * This struct describes regulator operations which can be implemented by * regulator chip drivers. */ @@ -187,6 +190,8 @@ struct regulator_ops { /* set regulator suspend operating mode (defined in consumer.h) */ int (*set_suspend_mode) (struct regulator_dev *, unsigned int mode); + + int (*set_pull_down) (struct regulator_dev *); }; /* diff --git a/include/linux/regulator/machine.h b/include/linux/regulator/machine.h index 01526559c8c3..8ffb0619a03c 100644 --- a/include/linux/regulator/machine.h +++ b/include/linux/regulator/machine.h @@ -87,6 +87,7 @@ struct regulator_state { * applied. * @apply_uV: Apply the voltage constraint when initialising. * @ramp_disable: Disable ramp delay when initialising or when setting voltage. + * @pull_down: Enable pull down when regulator is disabled. * * @input_uV: Input voltage for regulator when supplied by another regulator. * @@ -141,6 +142,7 @@ struct regulation_constraints { unsigned boot_on:1; /* bootloader/firmware enabled regulator */ unsigned apply_uV:1; /* apply uV constraint if min == max */ unsigned ramp_disable:1; /* disable ramp delay */ + unsigned pull_down:1; /* pull down resistor when regulator off */ }; /** -- cgit v1.2.3 From 57f66b78860968fc7eddc9ce25f8e57f7e5000bd Mon Sep 17 00:00:00 2001 From: Stephen Boyd Date: Thu, 11 Jun 2015 17:37:05 -0700 Subject: regulator: Add soft start support Some regulators support a "soft start" feature where the voltage ramps up slowly when the regulator is enabled. Add an op (set_soft_start) and a DT property + constraint to support this. Signed-off-by: Stephen Boyd Signed-off-by: Mark Brown --- include/linux/regulator/driver.h | 2 ++ include/linux/regulator/machine.h | 1 + 2 files changed, 3 insertions(+) (limited to 'include/linux') diff --git a/include/linux/regulator/driver.h b/include/linux/regulator/driver.h index 76144a337ff7..e0635d0894aa 100644 --- a/include/linux/regulator/driver.h +++ b/include/linux/regulator/driver.h @@ -161,6 +161,8 @@ struct regulator_ops { unsigned int old_selector, unsigned int new_selector); + int (*set_soft_start) (struct regulator_dev *); + /* report regulator status ... most other accessors report * control inputs, this reports results of combining inputs * from Linux (and other sources) with the actual load. diff --git a/include/linux/regulator/machine.h b/include/linux/regulator/machine.h index 8ffb0619a03c..7f7d0a3fe1e1 100644 --- a/include/linux/regulator/machine.h +++ b/include/linux/regulator/machine.h @@ -142,6 +142,7 @@ struct regulation_constraints { unsigned boot_on:1; /* bootloader/firmware enabled regulator */ unsigned apply_uV:1; /* apply uV constraint if min == max */ unsigned ramp_disable:1; /* disable ramp delay */ + unsigned soft_start:1; /* ramp voltage slowly */ unsigned pull_down:1; /* pull down resistor when regulator off */ }; -- cgit v1.2.3 From 36e4f839de59b6216a16cdf5c1d3263f4dbd9421 Mon Sep 17 00:00:00 2001 From: Stephen Boyd Date: Thu, 11 Jun 2015 17:37:06 -0700 Subject: regulator: Add input current limit support Some regulators can limit their input current (typically annotated as ilim). Add an op (set_input_current_limit) and a DT property + constraint to support this. Signed-off-by: Stephen Boyd Signed-off-by: Mark Brown --- include/linux/regulator/driver.h | 3 +++ include/linux/regulator/machine.h | 2 ++ 2 files changed, 5 insertions(+) (limited to 'include/linux') diff --git a/include/linux/regulator/driver.h b/include/linux/regulator/driver.h index e0635d0894aa..125264f8be93 100644 --- a/include/linux/regulator/driver.h +++ b/include/linux/regulator/driver.h @@ -91,6 +91,7 @@ struct regulator_linear_range { * @set_current_limit: Configure a limit for a current-limited regulator. * The driver should select the current closest to max_uA. * @get_current_limit: Get the configured limit for a current-limited regulator. + * @set_input_current_limit: Configure an input limit. * * @set_mode: Set the configured operating mode for the regulator. * @get_mode: Get the configured operating mode for the regulator. @@ -145,6 +146,8 @@ struct regulator_ops { int min_uA, int max_uA); int (*get_current_limit) (struct regulator_dev *); + int (*set_input_current_limit) (struct regulator_dev *, int lim_uA); + /* enable/disable regulator */ int (*enable) (struct regulator_dev *); int (*disable) (struct regulator_dev *); diff --git a/include/linux/regulator/machine.h b/include/linux/regulator/machine.h index 7f7d0a3fe1e1..85a3b457de51 100644 --- a/include/linux/regulator/machine.h +++ b/include/linux/regulator/machine.h @@ -75,6 +75,7 @@ struct regulator_state { * * @min_uA: Smallest current consumers may set. * @max_uA: Largest current consumers may set. + * @ilim_uA: Maximum input current. * @system_load: Load that isn't captured by any consumer requests. * * @valid_modes_mask: Mask of modes which may be configured by consumers. @@ -113,6 +114,7 @@ struct regulation_constraints { /* current output range (inclusive) - for current control */ int min_uA; int max_uA; + int ilim_uA; int system_load; -- cgit v1.2.3