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From:   Benjamin Bara <bbara93@gmail.com>
Date:   Tue, 20 Jun 2023 22:02:55 +0200
Subject: [PATCH RFC v4 02/13] regulator: add getter for active monitors
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In-Reply-To: <20230419-dynamic-vmon-v4-0-4d3734e62ada@skidata.com>
To:     Liam Girdwood <lgirdwood@gmail.com>,
        Mark Brown <broonie@kernel.org>
Cc:     support.opensource@diasemi.com,
        DLG-Adam.Ward.opensource@dm.renesas.com,
        Martin Fuzzey <martin.fuzzey@flowbird.group>,
        linux-kernel@vger.kernel.org,
        Matti Vaittinen <mazziesaccount@gmail.com>,
        Benjamin Bara <benjamin.bara@skidata.com>
Precedence: bulk

From: Benjamin Bara <benjamin.bara@skidata.com>

Add an op to get all active monitors of a regulator. This is useful to
find out if any monitor is turned on, of which the device-tree is not
aware of (e.g. by bootloader or OTP).

Signed-off-by: Benjamin Bara <benjamin.bara@skidata.com>
---
 include/linux/regulator/driver.h | 10 ++++++++++
 1 file changed, 10 insertions(+)

diff --git a/include/linux/regulator/driver.h b/include/linux/regulator/driver.h
index d3b4a3d4514a..9a9163cae769 100644
--- a/include/linux/regulator/driver.h
+++ b/include/linux/regulator/driver.h
@@ -25,6 +25,13 @@ struct regulator_config;
 struct regulator_init_data;
 struct regulator_enable_gpio;
 
+#define REGULATOR_MONITOR_NONE 0x0
+#define REGULATOR_MONITOR_OVER_CURRENT 0x1
+#define REGULATOR_MONITOR_OVER_VOLTAGE 0x2
+#define REGULATOR_MONITOR_UNDER_VOLTAGE 0x4
+#define REGULATOR_MONITOR_OVER_TEMPERATURE 0x8
+#define REGULATOR_MONITOR_ALL 0xF
+
 enum regulator_status {
 	REGULATOR_STATUS_OFF,
 	REGULATOR_STATUS_ON,
@@ -112,6 +119,8 @@ enum regulator_detection_severity {
  * @set_thermal_protection: Support enabling of and setting limits for over
  *	temperature situation detection.Detection can be configured for same
  *	severities as over current protection. Units of degree Kelvin.
+ * @get_active_protections: Get all enabled monitors of a regulator. OR'ed val
+ *	of REGULATOR_MONITOR_*.
  *
  * @set_active_discharge: Set active discharge enable/disable of regulators.
  *
@@ -183,6 +192,7 @@ struct regulator_ops {
 					    int severity, bool enable);
 	int (*set_thermal_protection)(struct regulator_dev *, int lim,
 				      int severity, bool enable);
+	int (*get_active_protections)(struct regulator_dev *dev, unsigned int *state);
 	int (*set_active_discharge)(struct regulator_dev *, bool enable);
 
 	/* enable/disable regulator */

-- 
2.34.1