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soc: qcom: rpmpd: Add support for get/set performance state
Add support for the .set_performace_state() and .opp_to_performance_state() callbacks in the rpmpd driver. Reviewed-by: Ulf Hansson <ulf.hansson@linaro.org> Reviewed-by: Stephen Boyd <swboyd@chromium.org> Signed-off-by: Rajendra Nayak <rnayak@codeaurora.org> Signed-off-by: Viresh Kumar <viresh.kumar@linaro.org> Signed-off-by: Bjorn Andersson <bjorn.andersson@linaro.org> Signed-off-by: Andy Gross <andy.gross@linaro.org>
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@ -10,6 +10,7 @@
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#include <linux/of.h>
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#include <linux/of_device.h>
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#include <linux/platform_device.h>
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#include <linux/pm_opp.h>
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#include <linux/soc/qcom/smd-rpm.h>
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#include <dt-bindings/mfd/qcom-rpm.h>
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@ -26,6 +27,8 @@
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#define KEY_ENABLE 0x6e657773 /* swen */
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#define KEY_FLOOR_CORNER 0x636676 /* vfc */
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#define MAX_RPMPD_STATE 6
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#define DEFINE_RPMPD_CORNER_SMPA(_platform, _name, _active, r_id) \
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static struct rpmpd _platform##_##_active; \
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static struct rpmpd _platform##_##_name = { \
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@ -218,6 +221,36 @@ static int rpmpd_power_off(struct generic_pm_domain *domain)
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return ret;
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}
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static int rpmpd_set_performance(struct generic_pm_domain *domain,
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unsigned int state)
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{
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int ret = 0;
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struct rpmpd *pd = domain_to_rpmpd(domain);
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if (state > MAX_RPMPD_STATE)
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goto out;
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mutex_lock(&rpmpd_lock);
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pd->corner = state;
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if (!pd->enabled && pd->key != KEY_FLOOR_CORNER)
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goto out;
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ret = rpmpd_aggregate_corner(pd);
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out:
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mutex_unlock(&rpmpd_lock);
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return ret;
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}
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static unsigned int rpmpd_get_performance(struct generic_pm_domain *genpd,
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struct dev_pm_opp *opp)
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{
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return dev_pm_opp_get_level(opp);
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}
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static int rpmpd_probe(struct platform_device *pdev)
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{
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int i;
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@ -258,6 +291,8 @@ static int rpmpd_probe(struct platform_device *pdev)
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rpmpds[i]->rpm = rpm;
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rpmpds[i]->pd.power_off = rpmpd_power_off;
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rpmpds[i]->pd.power_on = rpmpd_power_on;
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rpmpds[i]->pd.set_performance_state = rpmpd_set_performance;
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rpmpds[i]->pd.opp_to_performance_state = rpmpd_get_performance;
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pm_genpd_init(&rpmpds[i]->pd, NULL, true);
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data->domains[i] = &rpmpds[i]->pd;
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