Merge tag 'regulator-v5.8' of git://git.kernel.org/pub/scm/linux/kernel/git/broonie/regulator

Pull regulator updates from Mark Brown:
 "The big change in this release is that Matti Vaittinen has factored
  out the linear ranges support into a separate library in lib/ since it
  is also useful for at least the power subsystem (and most likely
  others too), it helps subsystems which need to map register values
  into more useful real world values do so with minimal per-driver code.

   - Factoring out of the linear ranges support into a library in lib/
     from Matti Vaittinen.

   - Trace points for bypass mode.

   - Use the consumer name in debugfs to make it easier to understand.

   - New drivers for Maxim MAX77826 and MAX8998"

* tag 'regulator-v5.8' of git://git.kernel.org/pub/scm/linux/kernel/git/broonie/regulator: (23 commits)
  regulator: max8998: max8998_set_current_limit() can be static
  dt-bindings: regulator: Convert anatop regulator to json-schema
  regulator: core: Add regulator bypass trace points
  regulator: extract voltage balancing code to the separate function
  regulator/mfd: max8998: Document charger regulator
  regulator: max8998: Add charger regulator
  MAINTAINERS: Add maintainer entry for linear ranges helper
  regulator: bd718x7: remove voltage change restriction from BD71847 LDOs
  lib: linear_ranges: Add missing MODULE_LICENSE()
  regulator: use linear_ranges helper
  power: supply: bd70528: rename linear_range to avoid collision
  lib/test_linear_ranges: add a test for the 'linear_ranges'
  lib: add linear ranges helpers
  regulator: db8500-prcmu: Use true,false for bool variable
  regulator: bd718x7: remove voltage change restriction from BD71847
  regulator: max77826: Remove erroneous additionalProperties
  regulator: qcom-rpmh: Fix typos in pm8150 and pm8150l
  regulator: Document bindings for max77826
  regulator: max77826: Add max77826 regulator driver
  regulator: tps80031: remove redundant assignment to variables ret and val
  ...

1 files changed, 48 insertions, 0 deletions

diff --git a/include/linux/linear_range.h b/include/linux/linear_range.h
new file mode 100644
index 000000000000..17b5943727d5
--- /dev/null
+++ b/include/linux/linear_range.h
@@ -0,0 +1,48 @@
+/* SPDX-License-Identifier: GPL-2.0 */
+/* Copyright (C) 2020 ROHM Semiconductors */
+
+#ifndef LINEAR_RANGE_H
+#define LINEAR_RANGE_H
+
+#include <linux/types.h>
+
+/**
+ * struct linear_range - table of selector - value pairs
+ *
+ * Define a lookup-table for range of values. Intended to help when looking
+ * for a register value matching certaing physical measure (like voltage).
+ * Usable when increment of one in register always results a constant increment
+ * of the physical measure (like voltage).
+ *
+ * @min:  Lowest value in range
+ * @min_sel: Lowest selector for range
+ * @max_sel: Highest selector for range
+ * @step: Value step size
+ */
+struct linear_range {
+	unsigned int min;
+	unsigned int min_sel;
+	unsigned int max_sel;
+	unsigned int step;
+};
+
+unsigned int linear_range_values_in_range(const struct linear_range *r);
+unsigned int linear_range_values_in_range_array(const struct linear_range *r,
+						int ranges);
+unsigned int linear_range_get_max_value(const struct linear_range *r);
+
+int linear_range_get_value(const struct linear_range *r, unsigned int selector,
+			   unsigned int *val);
+int linear_range_get_value_array(const struct linear_range *r, int ranges,
+				 unsigned int selector, unsigned int *val);
+int linear_range_get_selector_low(const struct linear_range *r,
+				  unsigned int val, unsigned int *selector,
+				  bool *found);
+int linear_range_get_selector_high(const struct linear_range *r,
+				   unsigned int val, unsigned int *selector,
+				   bool *found);
+int linear_range_get_selector_low_array(const struct linear_range *r,
+					int ranges, unsigned int val,
+					unsigned int *selector, bool *found);
+
+#endif