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Code Issues Releases Wiki Activity

opp: Remove bandwidth votes when target_freq is zero 

We already drop several votes when target_freq is set to zero, drop
bandwidth votes as well.

Reported-by: Sibi Sankar <sibis@codeaurora.org>
Reviewed-by: Georgi Djakov <georgi.djakov@linaro.org>
Tested-by: Georgi Djakov <georgi.djakov@linaro.org>
Reviewed-by: Sibi Sankar <sibis@codeaurora.org>
Tested-by: Sibi Sankar <sibis@codeaurora.org>
Signed-off-by: Viresh Kumar <viresh.kumar@linaro.org>
This commit is contained in:
Viresh Kumar 2020-05-27 09:33:44 +05:30
parent 8d45719caa
commit b00e667a6d
1 changed files with 37 additions and 12 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

49
drivers/opp/core.c
View File

@ -725,6 +725,34 @@ restore_voltage:
return ret;
}
static int _set_opp_bw(const struct opp_table *opp_table,
struct dev_pm_opp *opp, struct device *dev, bool remove)
{
u32 avg, peak;
int i, ret;
if (!opp_table->paths)
return 0;
for (i = 0; i < opp_table->path_count; i++) {
if (remove) {
avg = 0;
peak = 0;
} else {
avg = opp->bandwidth[i].avg;
peak = opp->bandwidth[i].peak;
}
ret = icc_set_bw(opp_table->paths[i], avg, peak);
if (ret) {
dev_err(dev, "Failed to %s bandwidth[%d]: %d\n",
remove ? "remove" : "set", i, ret);
return ret;
}
}
return 0;
}
static int _set_opp_custom(const struct opp_table *opp_table,
struct device *dev, unsigned long old_freq,
unsigned long freq,
@ -820,7 +848,7 @@ int dev_pm_opp_set_rate(struct device *dev, unsigned long target_freq)
unsigned long freq, old_freq, temp_freq;
struct dev_pm_opp *old_opp, *opp;
struct clk *clk;
int ret, i;
int ret;
opp_table = _find_opp_table(dev);
if (IS_ERR(opp_table)) {
@ -837,12 +865,17 @@ int dev_pm_opp_set_rate(struct device *dev, unsigned long target_freq)
if (!_get_opp_count(opp_table))
return 0;
if (!opp_table->required_opp_tables && !opp_table->regulators) {
if (!opp_table->required_opp_tables && !opp_table->regulators &&
!opp_table->paths) {
dev_err(dev, "target frequency can't be 0\n");
ret = -EINVAL;
goto put_opp_table;
}
ret = _set_opp_bw(opp_table, NULL, dev, true);
if (ret)
return ret;
if (opp_table->regulator_enabled) {
regulator_disable(opp_table->regulators[0]);
opp_table->regulator_enabled = false;
@ -932,16 +965,8 @@ int dev_pm_opp_set_rate(struct device *dev, unsigned long target_freq)
dev_err(dev, "Failed to set required opps: %d\n", ret);
}
if (!ret && opp_table->paths) {
for (i = 0; i < opp_table->path_count; i++) {
ret = icc_set_bw(opp_table->paths[i],
opp->bandwidth[i].avg,
opp->bandwidth[i].peak);
if (ret)
dev_err(dev, "Failed to set bandwidth[%d]: %d\n",
i, ret);
}
}
if (!ret)
ret = _set_opp_bw(opp_table, opp, dev, false);
put_opp:
dev_pm_opp_put(opp);