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| author | Viresh Kumar <viresh.kumar@linaro.org> | 2022-06-10 08:32:04 +0200 |
|---|---|---|
| committer | Viresh Kumar <viresh.kumar@linaro.org> | 2022-07-12 17:05:20 +0200 |
| commit | 2083da24eb56ce622332946800a67a7449d85fe5 (patch) | |
| tree | 5e66680874d4ddaa82f9bda53a8ef2bc5f243c13 /drivers/opp/opp.h | |
| parent | dt-bindings: opp: accept array of frequencies (diff) | |
| download | linux-2083da24eb56ce622332946800a67a7449d85fe5.tar.xz linux-2083da24eb56ce622332946800a67a7449d85fe5.zip | |
OPP: Allow multiple clocks for a device
This patch adds support to allow multiple clocks for a device.
The design is pretty much similar to how this is done for regulators,
and platforms can supply their own version of the config_clks() callback
if they have multiple clocks for their device. The core manages the
calls via opp_table->config_clks() eventually.
We have kept both "clk" and "clks" fields in the OPP table structure and
the reason is provided as a comment in _opp_set_clknames(). The same
isn't done for "rates" though and we use rates[0] at most of the places
now.
Co-developed-by: Krzysztof Kozlowski <krzysztof.kozlowski@linaro.org>
Signed-off-by: Krzysztof Kozlowski <krzysztof.kozlowski@linaro.org>
Tested-by: Jon Hunter <jonathanh@nvidia.com>
Tested-by: Dmitry Osipenko <dmitry.osipenko@collabora.com>
Tested-by: Manivannan Sadhasivam <manivannan.sadhasivam@linaro.org>
Signed-off-by: Viresh Kumar <viresh.kumar@linaro.org>
Diffstat (limited to 'drivers/opp/opp.h')
| -rw-r--r-- | drivers/opp/opp.h | 16 |
1 files changed, 10 insertions, 6 deletions
diff --git a/drivers/opp/opp.h b/drivers/opp/opp.h index e481bdb59499..816009eaafee 100644 --- a/drivers/opp/opp.h +++ b/drivers/opp/opp.h @@ -79,7 +79,7 @@ struct opp_config_data { * @suspend: true if suspend OPP * @removed: flag indicating that OPP's reference is dropped by OPP core. * @pstate: Device's power domain's performance state. - * @rate: Frequency in hertz + * @rates: Frequencies in hertz * @level: Performance level * @supplies: Power supplies voltage/current values * @bandwidth: Interconnect bandwidth values @@ -102,7 +102,7 @@ struct dev_pm_opp { bool suspend; bool removed; unsigned int pstate; - unsigned long rate; + unsigned long *rates; unsigned int level; struct dev_pm_opp_supply *supplies; @@ -170,8 +170,10 @@ enum opp_table_access { * @supported_hw: Array of version number to support. * @supported_hw_count: Number of elements in supported_hw array. * @prop_name: A name to postfix to many DT properties, while parsing them. - * @clk_configured: Clock name is configured by the platform. - * @clk: Device's clock handle + * @config_clks: Platform specific config_clks() callback. + * @clks: Device's clock handles, for multiple clocks. + * @clk: Device's clock handle, for single clock. + * @clk_count: Number of clocks. * @config_regulators: Platform specific config_regulators() callback. * @regulators: Supply regulators * @regulator_count: Number of power supply regulators. Its value can be -1 @@ -220,8 +222,10 @@ struct opp_table { unsigned int *supported_hw; unsigned int supported_hw_count; const char *prop_name; - bool clk_configured; + config_clks_t config_clks; + struct clk **clks; struct clk *clk; + int clk_count; config_regulators_t config_regulators; struct regulator **regulators; int regulator_count; @@ -246,7 +250,7 @@ struct opp_table *_find_opp_table(struct device *dev); struct opp_device *_add_opp_dev(const struct device *dev, struct opp_table *opp_table); struct dev_pm_opp *_opp_allocate(struct opp_table *opp_table); void _opp_free(struct dev_pm_opp *opp); -int _opp_compare_key(struct dev_pm_opp *opp1, struct dev_pm_opp *opp2); +int _opp_compare_key(struct opp_table *opp_table, struct dev_pm_opp *opp1, struct dev_pm_opp *opp2); int _opp_add(struct device *dev, struct dev_pm_opp *new_opp, struct opp_table *opp_table); int _opp_add_v1(struct opp_table *opp_table, struct device *dev, unsigned long freq, long u_volt, bool dynamic); void _dev_pm_opp_cpumask_remove_table(const struct cpumask *cpumask, int last_cpu); |