From mboxrd@z Thu Jan 1 00:00:00 1970 From: Rajendra Nayak Subject: Re: [PATCH 4/7] soc: qcom: rpmpd: Add support for get/set performance state Date: Fri, 16 Mar 2018 11:22:05 +0530 Message-ID: <36687f34-449d-643c-251f-4469322db21e@codeaurora.org> References: <20180316040824.21472-1-rnayak@codeaurora.org> <20180316040824.21472-5-rnayak@codeaurora.org> <20180316043535.GQ15832@vireshk-i7> Mime-Version: 1.0 Content-Type: text/plain; charset=utf-8 Content-Transfer-Encoding: 7bit Return-path: In-Reply-To: <20180316043535.GQ15832@vireshk-i7> Content-Language: en-US Sender: linux-kernel-owner@vger.kernel.org To: Viresh Kumar Cc: sboyd@kernel.org, andy.gross@linaro.org, ulf.hansson@linaro.org, devicetree@vger.kernel.org, linux-arm-msm@vger.kernel.org, linux-kernel@vger.kernel.org List-Id: linux-arm-msm@vger.kernel.org On 03/16/2018 10:05 AM, Viresh Kumar wrote: > On 16-03-18, 09:38, Rajendra Nayak wrote: >> 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 >> Signed-off-by: Viresh Kumar >> --- >> 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 >> #include >> #include >> +#include >> #include >> >> #include >> @@ -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); > > Don't we want to error out or do something else in case of an error ? yes, I missed the error checks, will add. -- Qualcomm Innovation Center, Inc. is a member of Code Aurora Forum, hosted by The Linux Foundation