Messages in this thread Patch in this message |  | | From | Rajendra Nayak <> | Subject | [PATCH 4/7] soc: qcom: rpmpd: Add support for get/set performance state | Date | Fri, 16 Mar 2018 09:38:21 +0530 |
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With genpd now expecting powerdomain drivers supporting performance state to support get/set performance state callbacks, add support for it in the rpmpd driver.
Signed-off-by: Rajendra Nayak <rnayak@codeaurora.org> Signed-off-by: Viresh Kumar <viresh.kumar@linaro.org> --- drivers/soc/qcom/rpmpd.c | 42 ++++++++++++++++++++++++++++++++++++++++++ 1 file changed, 42 insertions(+)
diff --git a/drivers/soc/qcom/rpmpd.c b/drivers/soc/qcom/rpmpd.c index c8754d867c33..4058c5b450c6 100644 --- a/drivers/soc/qcom/rpmpd.c +++ b/drivers/soc/qcom/rpmpd.c @@ -14,6 +14,7 @@ #include <linux/of.h> #include <linux/of_device.h> #include <linux/platform_device.h> +#include <linux/pm_opp.h> #include <linux/soc/qcom/smd-rpm.h> #include <dt-bindings/mfd/qcom-rpm.h> @@ -29,6 +30,8 @@ #define KEY_ENABLE 0x6e657773 /* swen */ #define KEY_FLOOR_CORNER 0x636676 /* vfc */ +#define MAX_RPMPD_STATE 6 + #define DEFINE_RPMPD_CORN_SMPA(_platform, _name, _active, r_id) \ static struct rpmpd _platform##_##_active; \ static struct rpmpd _platform##_##_name = { \ @@ -222,6 +225,43 @@ static int rpmpd_power_off(struct generic_pm_domain *domain) return ret; } +static int rpmpd_set_performance(struct generic_pm_domain *domain, + unsigned int state) +{ + int ret = 0; + struct rpmpd *pd = domain_to_rpmpd(domain); + + mutex_lock(&rpmpd_lock); + + if (state > MAX_RPMPD_STATE) + goto out; + + pd->corner = state; + + if (!pd->enabled && (pd->key != KEY_FLOOR_CORNER)) + goto out; + + ret = rpmpd_aggregate_corner(pd); + +out: + mutex_unlock(&rpmpd_lock); + + return ret; +} + +static unsigned int rpmpd_get_performance(struct generic_pm_domain *genpd, + struct dev_pm_opp *opp) +{ + struct device_node *np; + unsigned int corner = 0; + + np = dev_pm_opp_get_of_node(opp); + of_property_read_u32(np, "qcom,level", &corner); + of_node_put(np); + + return corner; +} + static int rpmpd_probe(struct platform_device *pdev) { int i; @@ -259,6 +299,8 @@ static int rpmpd_probe(struct platform_device *pdev) rpmpds[i]->rpm = rpm; rpmpds[i]->pd.power_off = rpmpd_power_off; rpmpds[i]->pd.power_on = rpmpd_power_on; + rpmpds[i]->pd.set_performance_state = rpmpd_set_performance; + rpmpds[i]->pd.get_performance_state = rpmpd_get_performance; pm_genpd_init(&rpmpds[i]->pd, NULL, true); data->domains[i] = &rpmpds[i]->pd; -- QUALCOMM INDIA, on behalf of Qualcomm Innovation Center, Inc. is a member of Code Aurora Forum, hosted by The Linux Foundation
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