From: "Michał Mirosław" <mirq-linux@rere.qmqm.pl>
To: Andrey Smirnov <andrew.smirnov@gmail.com>,
Guenter Roeck <linux@roeck-us.net>,
Sebastian Reichel <sebastian.reichel@collabora.com>
Cc: linux-kernel@vger.kernel.org, linux-pm@vger.kernel.org
Subject: [PATCH 6/7] power: supply: core: add output voltage measurements
Date: Thu, 02 Apr 2020 16:57:04 +0200 [thread overview]
Message-ID: <2e8bff71e2cedeca044d8265c8fb34b3e627eff8.1585837575.git.mirq-linux@rere.qmqm.pl> (raw)
In-Reply-To: <cover.1585837575.git.mirq-linux@rere.qmqm.pl>
Add support for supply output voltage to be measured and configured.
This might be different from the voltage on the storage element (battery).
Signed-off-by: Michał Mirosław <mirq-linux@rere.qmqm.pl>
---
drivers/power/supply/power_supply_hwmon.c | 25 +++++++++++++++++++++++
drivers/power/supply/power_supply_sysfs.c | 3 +++
include/linux/power_supply.h | 3 +++
3 files changed, 31 insertions(+)
diff --git a/drivers/power/supply/power_supply_hwmon.c b/drivers/power/supply/power_supply_hwmon.c
index c638750e0a18..781a265bd061 100644
--- a/drivers/power/supply/power_supply_hwmon.c
+++ b/drivers/power/supply/power_supply_hwmon.c
@@ -41,6 +41,20 @@ static int power_supply_hwmon_in1_to_property(u32 attr)
}
}
+static int power_supply_hwmon_in2_to_property(u32 attr)
+{
+ switch (attr) {
+ case hwmon_in_min:
+ return POWER_SUPPLY_PROP_OUTPUT_VOLTAGE_MIN;
+ case hwmon_in_max:
+ return POWER_SUPPLY_PROP_OUTPUT_VOLTAGE_MAX;
+ case hwmon_in_input:
+ return POWER_SUPPLY_PROP_OUTPUT_VOLTAGE_NOW;
+ default:
+ return -EINVAL;
+ }
+}
+
static int power_supply_hwmon_in_to_property(u32 attr, int channel)
{
switch (channel) {
@@ -48,6 +62,8 @@ static int power_supply_hwmon_in_to_property(u32 attr, int channel)
return power_supply_hwmon_in0_to_property(attr);
case 1:
return power_supply_hwmon_in1_to_property(attr);
+ case 2:
+ return power_supply_hwmon_in2_to_property(attr);
default:
return -EINVAL;
}
@@ -94,6 +110,7 @@ static int power_supply_hwmon_curr_to_property(u32 attr, int channel)
static const char *const ps_input_label[] = {
"battery",
"external source",
+ "load",
};
static const char *const ps_temp_label[] = {
@@ -404,6 +421,11 @@ static const struct hwmon_channel_info *power_supply_hwmon_info[] = {
HWMON_I_LABEL |
HWMON_I_MAX |
+ HWMON_I_INPUT,
+
+ HWMON_I_LABEL |
+ HWMON_I_MIN |
+ HWMON_I_MAX |
HWMON_I_INPUT),
NULL
@@ -474,6 +496,9 @@ int power_supply_add_hwmon_sysfs(struct power_supply *psy)
case POWER_SUPPLY_PROP_INPUT_CURRENT_LIMIT:
case POWER_SUPPLY_PROP_INPUT_VOLTAGE_NOW:
case POWER_SUPPLY_PROP_INPUT_VOLTAGE_LIMIT:
+ case POWER_SUPPLY_PROP_OUTPUT_VOLTAGE_MIN:
+ case POWER_SUPPLY_PROP_OUTPUT_VOLTAGE_MAX:
+ case POWER_SUPPLY_PROP_OUTPUT_VOLTAGE_NOW:
set_bit(prop, psyhw->props);
break;
default:
diff --git a/drivers/power/supply/power_supply_sysfs.c b/drivers/power/supply/power_supply_sysfs.c
index 1d1fb69516a8..fb6f113b52bb 100644
--- a/drivers/power/supply/power_supply_sysfs.c
+++ b/drivers/power/supply/power_supply_sysfs.c
@@ -278,6 +278,9 @@ static struct device_attribute power_supply_attrs[] = {
POWER_SUPPLY_ATTR(input_voltage_now),
POWER_SUPPLY_ATTR(input_voltage_limit),
POWER_SUPPLY_ATTR(input_power_limit),
+ POWER_SUPPLY_ATTR(output_voltage_now),
+ POWER_SUPPLY_ATTR(output_voltage_min),
+ POWER_SUPPLY_ATTR(output_voltage_max),
POWER_SUPPLY_ATTR(energy_full_design),
POWER_SUPPLY_ATTR(energy_empty_design),
POWER_SUPPLY_ATTR(energy_full),
diff --git a/include/linux/power_supply.h b/include/linux/power_supply.h
index 5313d1284aad..f1ff8d230488 100644
--- a/include/linux/power_supply.h
+++ b/include/linux/power_supply.h
@@ -132,6 +132,9 @@ enum power_supply_property {
POWER_SUPPLY_PROP_INPUT_VOLTAGE_NOW,
POWER_SUPPLY_PROP_INPUT_VOLTAGE_LIMIT,
POWER_SUPPLY_PROP_INPUT_POWER_LIMIT,
+ POWER_SUPPLY_PROP_OUTPUT_VOLTAGE_NOW,
+ POWER_SUPPLY_PROP_OUTPUT_VOLTAGE_MIN,
+ POWER_SUPPLY_PROP_OUTPUT_VOLTAGE_MAX,
POWER_SUPPLY_PROP_ENERGY_FULL_DESIGN,
POWER_SUPPLY_PROP_ENERGY_EMPTY_DESIGN,
POWER_SUPPLY_PROP_ENERGY_FULL,
--
2.20.1
next prev parent reply other threads:[~2020-04-02 14:57 UTC|newest]
Thread overview: 14+ messages / expand[flat|nested] mbox.gz Atom feed top
2020-04-02 14:57 [PATCH 0/7] power: supply: core: extensions and fixes Michał Mirosław
2020-04-02 14:57 ` [PATCH 1/7] power: supply: core: reduce power_supply_show_usb_type() parameters Michał Mirosław
2020-04-02 14:57 ` [PATCH 2/7] power: supply: core: allow to constify property lists Michał Mirosław
2020-04-03 19:16 ` kbuild test robot
2020-04-03 19:52 ` kbuild test robot
2020-04-02 14:57 ` [PATCH 3/7] power: supply: core: fix HWMON temperature labels Michał Mirosław
2020-04-02 14:52 ` Guenter Roeck
2020-04-02 15:00 ` Michał Mirosław
2020-04-02 18:29 ` Guenter Roeck
2020-04-03 15:53 ` Michał Mirosław
2020-04-02 14:57 ` [PATCH 4/7] power: supply: core: hide unused HWMON labels Michał Mirosław
2020-04-02 14:57 ` [PATCH 5/7] power: supply: core: add input voltage/current measurements Michał Mirosław
2020-04-02 14:57 ` Michał Mirosław [this message]
2020-04-02 14:57 ` [PATCH 7/7] power: supply: core: document measurement points Michał Mirosław
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