diff options
| author | Viresh Kumar <viresh.kumar@linaro.org> | 2016-02-09 05:00:34 (GMT) |
|---|---|---|
| committer | Rafael J. Wysocki <rafael.j.wysocki@intel.com> | 2016-02-10 00:11:53 (GMT) |
| commit | 7d34d56ef3349cd5f29cf7aab6650f3414fa81b9 (patch) | |
| tree | f4080b4da251ec01a6b973a672254f7bc7dca2c6 | |
| parent | 9f8ea969d5cfdd4353d2adb004e8e2286b984369 (diff) | |
| download | linux-7d34d56ef3349cd5f29cf7aab6650f3414fa81b9.tar.xz | |
PM / OPP: Disable OPPs that aren't supported by the regulator
Disable any OPPs where the connected regulator isn't able to provide the
specified voltage.
Signed-off-by: Viresh Kumar <viresh.kumar@linaro.org>
Reviewed-by: Stephen Boyd <sboyd@codeaurora.org>
Signed-off-by: Rafael J. Wysocki <rafael.j.wysocki@intel.com>
| -rw-r--r-- | drivers/base/power/opp/core.c | 22 |
1 files changed, 22 insertions, 0 deletions
diff --git a/drivers/base/power/opp/core.c b/drivers/base/power/opp/core.c index 1e22b71..71545be 100644 --- a/drivers/base/power/opp/core.c +++ b/drivers/base/power/opp/core.c @@ -687,6 +687,22 @@ static struct dev_pm_opp *_allocate_opp(struct device *dev, return opp; } +static bool _opp_supported_by_regulators(struct dev_pm_opp *opp, + struct device_opp *dev_opp) +{ + struct regulator *reg = dev_opp->regulator; + + if (!IS_ERR(reg) && + !regulator_is_supported_voltage(reg, opp->u_volt_min, + opp->u_volt_max)) { + pr_warn("%s: OPP minuV: %lu maxuV: %lu, not supported by regulator\n", + __func__, opp->u_volt_min, opp->u_volt_max); + return false; + } + + return true; +} + static int _opp_add(struct device *dev, struct dev_pm_opp *new_opp, struct device_opp *dev_opp) { @@ -728,6 +744,12 @@ static int _opp_add(struct device *dev, struct dev_pm_opp *new_opp, dev_err(dev, "%s: Failed to register opp to debugfs (%d)\n", __func__, ret); + if (!_opp_supported_by_regulators(new_opp, dev_opp)) { + new_opp->available = false; + dev_warn(dev, "%s: OPP not supported by regulators (%lu)\n", + __func__, new_opp->rate); + } + return 0; } |