diff options
| author | Manivannan Sadhasivam <manivannan.sadhasivam@linaro.org> | 2023-07-20 08:40:53 +0300 |
|---|---|---|
| committer | Viresh Kumar <viresh.kumar@linaro.org> | 2023-07-24 10:52:39 +0300 |
| commit | 5f756d03e2c7db63c1df7148d7b1739f29ff1532 (patch) | |
| tree | 3505828ed917814c82989185a306006135f6680f /drivers/opp | |
| parent | 142e17c1c2b48e3fb4f024e62ab6dee18f268694 (diff) | |
| download | linux-5f756d03e2c7db63c1df7148d7b1739f29ff1532.tar.xz | |
OPP: Introduce dev_pm_opp_get_freq_indexed() API
In the case of devices with multiple clocks, drivers need to specify the
frequency index for the OPP framework to get the specific frequency within
the required OPP. So let's introduce the dev_pm_opp_get_freq_indexed() API
accepting the frequency index as an argument.
Signed-off-by: Manivannan Sadhasivam <manivannan.sadhasivam@linaro.org>
[ Viresh: Fixed potential access to NULL opp pointer ]
Signed-off-by: Viresh Kumar <viresh.kumar@linaro.org>
Diffstat (limited to 'drivers/opp')
| -rw-r--r-- | drivers/opp/core.c | 20 |
1 files changed, 20 insertions, 0 deletions
diff --git a/drivers/opp/core.c b/drivers/opp/core.c index cb4f47b341f9..07341050d57f 100644 --- a/drivers/opp/core.c +++ b/drivers/opp/core.c @@ -198,6 +198,26 @@ unsigned long dev_pm_opp_get_freq(struct dev_pm_opp *opp) EXPORT_SYMBOL_GPL(dev_pm_opp_get_freq); /** + * dev_pm_opp_get_freq_indexed() - Gets the frequency corresponding to an + * available opp with specified index + * @opp: opp for which frequency has to be returned for + * @index: index of the frequency within the required opp + * + * Return: frequency in hertz corresponding to the opp with specified index, + * else return 0 + */ +unsigned long dev_pm_opp_get_freq_indexed(struct dev_pm_opp *opp, u32 index) +{ + if (IS_ERR_OR_NULL(opp) || index >= opp->opp_table->clk_count) { + pr_err("%s: Invalid parameters\n", __func__); + return 0; + } + + return opp->rates[index]; +} +EXPORT_SYMBOL_GPL(dev_pm_opp_get_freq_indexed); + +/** * dev_pm_opp_get_level() - Gets the level corresponding to an available opp * @opp: opp for which level value has to be returned for * |