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| author | Cristian Marussi <cristian.marussi@arm.com> | 2022-03-30 16:05:50 +0100 |
|---|---|---|
| committer | Sudeep Holla <sudeep.holla@arm.com> | 2022-04-28 18:22:53 +0100 |
| commit | 3630cd8130ce0b2a607db09a1995e5bf99053ae1 (patch) | |
| tree | 1cc15938f741fc4075ef4a9a27dc335ce5f8483f /drivers/firmware/arm_scmi/perf.c | |
| parent | 79d2ea9244180bf76537c23406d838db955a57b5 (diff) | |
| download | lwn-3630cd8130ce0b2a607db09a1995e5bf99053ae1.tar.gz lwn-3630cd8130ce0b2a607db09a1995e5bf99053ae1.zip | |
firmware: arm_scmi: Add SCMI v3.1 perf power-cost in microwatts
Add SCMI v3.1 internal support for parsing message attributes reporting
the capability of a performance domain to report power-cost in microwatts.
Link: https://lore.kernel.org/r/20220330150551.2573938-22-cristian.marussi@arm.com
Cc: Lukasz Luba <lukasz.luba@arm.com>
Reviewed-by: Lukasz Luba <lukasz.luba@arm.com>
Signed-off-by: Cristian Marussi <cristian.marussi@arm.com>
Signed-off-by: Sudeep Holla <sudeep.holla@arm.com>
Diffstat (limited to 'drivers/firmware/arm_scmi/perf.c')
| -rw-r--r-- | drivers/firmware/arm_scmi/perf.c | 4 |
1 files changed, 4 insertions, 0 deletions
diff --git a/drivers/firmware/arm_scmi/perf.c b/drivers/firmware/arm_scmi/perf.c index e1aa0ed67971..65ffda5495d6 100644 --- a/drivers/firmware/arm_scmi/perf.c +++ b/drivers/firmware/arm_scmi/perf.c @@ -45,6 +45,7 @@ struct scmi_msg_resp_perf_attributes { __le16 num_domains; __le16 flags; #define POWER_SCALE_IN_MILLIWATT(x) ((x) & BIT(0)) +#define POWER_SCALE_IN_MICROWATT(x) ((x) & BIT(1)) __le32 stats_addr_low; __le32 stats_addr_high; __le32 stats_size; @@ -170,6 +171,7 @@ struct scmi_perf_info { u32 version; int num_domains; bool power_scale_mw; + bool power_scale_uw; u64 stats_addr; u32 stats_size; struct perf_dom_info *dom_info; @@ -200,6 +202,8 @@ static int scmi_perf_attributes_get(const struct scmi_protocol_handle *ph, pi->num_domains = le16_to_cpu(attr->num_domains); pi->power_scale_mw = POWER_SCALE_IN_MILLIWATT(flags); + if (PROTOCOL_REV_MAJOR(pi->version) >= 0x3) + pi->power_scale_uw = POWER_SCALE_IN_MICROWATT(flags); pi->stats_addr = le32_to_cpu(attr->stats_addr_low) | (u64)le32_to_cpu(attr->stats_addr_high) << 32; pi->stats_size = le32_to_cpu(attr->stats_size); |