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Provide a hook to query whether they are supported, before invoke event_notifier_register. scmi_perf_notify_supported could be directly used here, so just move scmi_perf_notify_supported above perf_proto_ops and use it in perf_proto_ops. Signed-off-by: Peng Fan --- drivers/firmware/arm_scmi/perf.c | 37 +++++++++++++++++++------------------ include/linux/scmi_protocol.h | 3 +++ 2 files changed, 22 insertions(+), 18 deletions(-) diff --git a/drivers/firmware/arm_scmi/perf.c b/drivers/firmware/arm_scmi/perf.c index c7e5a34b254bf4e9c51c7be56803b6d851f0e1d6..ba990643edf0bcb5fc25253b4f52a5dc93b62a77 100644 --- a/drivers/firmware/arm_scmi/perf.c +++ b/drivers/firmware/arm_scmi/perf.c @@ -1068,24 +1068,6 @@ scmi_power_scale_get(const struct scmi_protocol_handle *ph) return pi->power_scale; } -static const struct scmi_perf_proto_ops perf_proto_ops = { - .num_domains_get = scmi_perf_num_domains_get, - .info_get = scmi_perf_info_get, - .limits_set = scmi_perf_limits_set, - .limits_get = scmi_perf_limits_get, - .level_set = scmi_perf_level_set, - .level_get = scmi_perf_level_get, - .transition_latency_get = scmi_dvfs_transition_latency_get, - .rate_limit_get = scmi_dvfs_rate_limit_get, - .device_opps_add = scmi_dvfs_device_opps_add, - .freq_set = scmi_dvfs_freq_set, - .freq_get = scmi_dvfs_freq_get, - .est_power_get = scmi_dvfs_est_power_get, - .fast_switch_possible = scmi_fast_switch_possible, - .fast_switch_rate_limit = scmi_fast_switch_rate_limit, - .power_scale_get = scmi_power_scale_get, -}; - static bool scmi_perf_notify_supported(const struct scmi_protocol_handle *ph, u8 evt_id, u32 src_id) { @@ -1107,6 +1089,25 @@ static bool scmi_perf_notify_supported(const struct scmi_protocol_handle *ph, return supported; } +static const struct scmi_perf_proto_ops perf_proto_ops = { + .num_domains_get = scmi_perf_num_domains_get, + .info_get = scmi_perf_info_get, + .limits_set = scmi_perf_limits_set, + .limits_get = scmi_perf_limits_get, + .level_set = scmi_perf_level_set, + .level_get = scmi_perf_level_get, + .transition_latency_get = scmi_dvfs_transition_latency_get, + .rate_limit_get = scmi_dvfs_rate_limit_get, + .device_opps_add = scmi_dvfs_device_opps_add, + .freq_set = scmi_dvfs_freq_set, + .freq_get = scmi_dvfs_freq_get, + .est_power_get = scmi_dvfs_est_power_get, + .fast_switch_possible = scmi_fast_switch_possible, + .fast_switch_rate_limit = scmi_fast_switch_rate_limit, + .power_scale_get = scmi_power_scale_get, + .notify_supported = scmi_perf_notify_supported, +}; + static int scmi_perf_set_notify_enabled(const struct scmi_protocol_handle *ph, u8 evt_id, u32 src_id, bool enable) { diff --git a/include/linux/scmi_protocol.h b/include/linux/scmi_protocol.h index aafaac1496b06a6e4f0ca32eee58a9edf7d4a70f..91865f0ebcbd4b15b55afd8c1a0d0614d6985daf 100644 --- a/include/linux/scmi_protocol.h +++ b/include/linux/scmi_protocol.h @@ -155,6 +155,7 @@ struct scmi_perf_domain_info { * successive fast_switching requests * @power_scale_get: indicates if the power values provided are in milliWatts * or in some other (abstract) scale + * @notify_supported: indicates if the event is supported */ struct scmi_perf_proto_ops { int (*num_domains_get)(const struct scmi_protocol_handle *ph); @@ -185,6 +186,8 @@ struct scmi_perf_proto_ops { int (*fast_switch_rate_limit)(const struct scmi_protocol_handle *ph, u32 domain, u32 *rate_limit); enum scmi_power_scale (*power_scale_get)(const struct scmi_protocol_handle *ph); + bool (*notify_supported)(const struct scmi_protocol_handle *ph, u8 evt_id, + u32 src_id); }; /**