svn commit: r356803 - head/sys/dev/extres/regulator

[Emmanuel Vadot]

Author: manu
Date: Thu Jan 16 20:52:26 2020
New Revision: 356803
URL: https://svnweb.freebsd.org/changeset/base/356803

Log:
  regulator_fixed: Add a get_voltage method
  
  Some consumer cannot know the voltage of the regulator without it.
  While here, refuse to attach is min_voltage != max_voltage, it
  shouldn't happens anyway.
  
  Reviewed by:	mmel
  MFC after:	1 month
  Differential Revision:	https://reviews.freebsd.org/D23003

Modified:
  head/sys/dev/extres/regulator/regulator_fixed.c

Modified: head/sys/dev/extres/regulator/regulator_fixed.c
==============================================================================
--- head/sys/dev/extres/regulator/regulator_fixed.c	Thu Jan 16 20:19:20 2020	(r356802)
+++ head/sys/dev/extres/regulator/regulator_fixed.c	Thu Jan 16 20:52:26 2020	(r356803)
@@ -73,6 +73,7 @@ static int regnode_fixed_enable(struct regnode *regnod
     int *udelay);
 static int regnode_fixed_status(struct regnode *regnode, int *status);
 static int regnode_fixed_stop(struct regnode *regnode, int *udelay);
+static int regnode_fixed_get_voltage(struct regnode *regnode, int *uvolt);
 
 static regnode_method_t regnode_fixed_methods[] = {
 	/* Regulator interface */
@@ -80,6 +81,7 @@ static regnode_method_t regnode_fixed_methods[] = {
 	REGNODEMETHOD(regnode_enable,		regnode_fixed_enable),
 	REGNODEMETHOD(regnode_status,		regnode_fixed_status),
 	REGNODEMETHOD(regnode_stop,		regnode_fixed_stop),
+	REGNODEMETHOD(regnode_get_voltage,	regnode_fixed_get_voltage),
 	REGNODEMETHOD(regnode_check_voltage,	regnode_method_check_voltage),
 	REGNODEMETHOD_END
 };
@@ -280,6 +282,16 @@ regnode_fixed_status(struct regnode *regnode, int *sta
 	return (rv);
 }
 
+static int
+regnode_fixed_get_voltage(struct regnode *regnode, int *uvolt)
+{
+	struct regnode_fixed_sc *sc;
+
+	sc = regnode_get_softc(regnode);
+	*uvolt = sc->param->min_uvolt;
+	return (0);
+}
+
 int
 regnode_fixed_register(device_t dev, struct regnode_fixed_init_def *init_def)
 {
@@ -382,6 +394,10 @@ regfix_parse_fdt(struct regfix_softc * sc)
 		return(rv);
 	}
 
+	if (init_def->std_param.min_uvolt != init_def->std_param.max_uvolt) {
+		device_printf(sc->dev, "min_uvolt != max_uvolt\n");
+		return (ENXIO);
+	}
 	/* Fixed regulator uses 'startup-delay-us' property for enable_delay */
 	rv = OF_getencprop(node, "startup-delay-us",
 	   &init_def->std_param.enable_delay,