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authorDmitry Osipenko <digetx@gmail.com>2019-12-18 21:55:35 +0300
committerThierry Reding <treding@nvidia.com>2020-01-10 17:42:58 +0300
commit45f019a684253910064699395649c7869a203777 (patch)
tree2d4821ecda3d5ea448a7007326ffa01da65ed51c /drivers/soc/tegra
parent19d41e5e9c6863ada69e4f6d006634e60987c7ac (diff)
downloadlinux-45f019a684253910064699395649c7869a203777.tar.xz
soc/tegra: regulators: Do nothing if voltage is unchanged
There is no need to re-apply the same voltage. This change is just a minor cleanup. Signed-off-by: Dmitry Osipenko <digetx@gmail.com> Signed-off-by: Thierry Reding <treding@nvidia.com>
Diffstat (limited to 'drivers/soc/tegra')
-rw-r--r--drivers/soc/tegra/regulators-tegra20.c8
-rw-r--r--drivers/soc/tegra/regulators-tegra30.c6
2 files changed, 13 insertions, 1 deletions
diff --git a/drivers/soc/tegra/regulators-tegra20.c b/drivers/soc/tegra/regulators-tegra20.c
index ea0eede48802..367a71a3cd10 100644
--- a/drivers/soc/tegra/regulators-tegra20.c
+++ b/drivers/soc/tegra/regulators-tegra20.c
@@ -162,6 +162,9 @@ static int tegra20_core_rtc_update(struct tegra_regulator_coupler *tegra,
core_target_uV = max(rtc_uV - max_spread, core_target_uV);
}
+ if (core_uV == core_target_uV)
+ goto update_rtc;
+
err = regulator_set_voltage_rdev(core_rdev,
core_target_uV,
core_max_uV,
@@ -170,7 +173,7 @@ static int tegra20_core_rtc_update(struct tegra_regulator_coupler *tegra,
return err;
core_uV = core_target_uV;
-
+update_rtc:
if (rtc_uV < rtc_min_uV) {
rtc_target_uV = min(rtc_uV + max_spread, rtc_min_uV);
rtc_target_uV = min(core_uV + max_spread, rtc_target_uV);
@@ -179,6 +182,9 @@ static int tegra20_core_rtc_update(struct tegra_regulator_coupler *tegra,
rtc_target_uV = max(core_uV - max_spread, rtc_target_uV);
}
+ if (rtc_uV == rtc_target_uV)
+ continue;
+
err = regulator_set_voltage_rdev(rtc_rdev,
rtc_target_uV,
rtc_max_uV,
diff --git a/drivers/soc/tegra/regulators-tegra30.c b/drivers/soc/tegra/regulators-tegra30.c
index 8e623ff18e70..7f21f31de09d 100644
--- a/drivers/soc/tegra/regulators-tegra30.c
+++ b/drivers/soc/tegra/regulators-tegra30.c
@@ -209,6 +209,9 @@ static int tegra30_voltage_update(struct tegra_regulator_coupler *tegra,
cpu_target_uV = max(core_uV - max_spread, cpu_target_uV);
}
+ if (cpu_uV == cpu_target_uV)
+ goto update_core;
+
err = regulator_set_voltage_rdev(cpu_rdev,
cpu_target_uV,
cpu_max_uV,
@@ -231,6 +234,9 @@ update_core:
core_target_uV = max(core_target_uV, core_uV - core_max_step);
}
+ if (core_uV == core_target_uV)
+ continue;
+
err = regulator_set_voltage_rdev(core_rdev,
core_target_uV,
core_max_uV,