Messages in this thread Patch in this message | | | From | Viresh Kumar <> | Subject | [PATCH V3 2/4] opp: Reuse the enabled flag in !target_freq path | Date | Thu, 20 Aug 2020 13:26:32 +0530 |
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The OPP core needs to track if the resources of devices are enabled/configured or not, as it disables the resources when target_freq is set to 0.
Handle that with the new enabled flag and remove otherwise complex conditional statements.
Signed-off-by: Viresh Kumar <viresh.kumar@linaro.org> --- drivers/opp/core.c | 29 +++++++++++------------------ 1 file changed, 11 insertions(+), 18 deletions(-)
diff --git a/drivers/opp/core.c b/drivers/opp/core.c index 6f43ef4945b7..0b437d483b75 100644 --- a/drivers/opp/core.c +++ b/drivers/opp/core.c @@ -886,22 +886,18 @@ int dev_pm_opp_set_rate(struct device *dev, unsigned long target_freq) } if (unlikely(!target_freq)) { + ret = 0; + + if (!opp_table->enabled) + goto put_opp_table; + /* * Some drivers need to support cases where some platforms may * have OPP table for the device, while others don't and * opp_set_rate() just needs to behave like clk_set_rate(). */ - if (!_get_opp_count(opp_table)) { - ret = 0; - goto put_opp_table; - } - - if (!opp_table->required_opp_tables && !opp_table->regulators && - !opp_table->paths) { - dev_err(dev, "target frequency can't be 0\n"); - ret = -EINVAL; + if (!_get_opp_count(opp_table)) goto put_opp_table; - } ret = _set_opp_bw(opp_table, NULL, dev, true); if (ret) @@ -931,14 +927,11 @@ int dev_pm_opp_set_rate(struct device *dev, unsigned long target_freq) old_freq = clk_get_rate(clk); /* Return early if nothing to do */ - if (old_freq == freq) { - if (!opp_table->required_opp_tables && !opp_table->regulators && - !opp_table->paths) { - dev_dbg(dev, "%s: old/new frequencies (%lu Hz) are same, nothing to do\n", - __func__, freq); - ret = 0; - goto put_opp_table; - } + if (opp_table->enabled && old_freq == freq) { + dev_dbg(dev, "%s: old/new frequencies (%lu Hz) are same, nothing to do\n", + __func__, freq); + ret = 0; + goto put_opp_table; } /* -- 2.25.0.rc1.19.g042ed3e048af
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