| lists.openwall.net | lists / announce owl-users owl-dev john-users john-dev passwdqc-users yescrypt popa3d-users / oss-security kernel-hardening musl sabotage tlsify passwords / crypt-dev xvendor / Bugtraq Full-Disclosure linux-kernel linux-netdev linux-ext4 linux-hardening linux-cve-announce PHC | |
|
Open Source and information security mailing list archives
| ||
|
Date: Sun, 25 Feb 2024 14:59:33 +0000
From: Mark Brown <broonie@...nel.org>
To: Liam Girdwood <lgirdwood@...il.com>
Cc: linux-kernel@...r.kernel.org, Markus Reichl <m.reichl@...etechno.de>,
Mark Brown <broonie@...nel.org>
Subject: [PATCH 7/8] regulator: mp8859: Report slew rate
The MP8859 implements voltage changes at the rate of 1mV/us, tell the core
about this so that it can provide appropriate delays on voltage changes.
Signed-off-by: Mark Brown <broonie@...nel.org>
---
drivers/regulator/mp8859.c | 15 +++++++++++++++
1 file changed, 15 insertions(+)
diff --git a/drivers/regulator/mp8859.c b/drivers/regulator/mp8859.c
index fc1636d69bca..3e849e1a172f 100644
--- a/drivers/regulator/mp8859.c
+++ b/drivers/regulator/mp8859.c
@@ -81,6 +81,20 @@ static int mp8859_get_voltage_sel(struct regulator_dev *rdev)
return val;
}
+static int mp8859_set_voltage_time_sel(struct regulator_dev *rdev,
+ unsigned int from, unsigned int to)
+{
+ int change;
+
+ /* The voltage ramps at 1mV/uS, selectors are 10mV */
+ if (from > to)
+ change = from - to;
+ else
+ change = to - from;
+
+ return change * 10 * 1000;
+}
+
static unsigned int mp8859_get_mode(struct regulator_dev *rdev)
{
unsigned int val;
@@ -220,6 +234,7 @@ static const struct regulator_ops mp8859_ops = {
.set_voltage_sel = mp8859_set_voltage_sel,
.get_voltage_sel = mp8859_get_voltage_sel,
.list_voltage = regulator_list_voltage_linear_range,
+ .set_voltage_time_sel = mp8859_set_voltage_time_sel,
.enable = regulator_enable_regmap,
.disable = regulator_disable_regmap,
.is_enabled = regulator_is_enabled_regmap,
--
2.39.2
Powered by blists - more mailing lists