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interconnect: qcom: Add support for mask-based BCMs

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Some BCMs aren't directly associated with the data path (i.e. ACV) and
therefore don't communicate using BW. Instead, they are simply
enabled/disabled with a simple bit mask. Add support for these.

Origin commit retrieved from:
2d1573e020

Signed-off-by: Mike Tipton <mdtipton@codeaurora.org>
[narmstrong: removed copyright change from original commit]
Signed-off-by: Neil Armstrong <neil.armstrong@linaro.org>
Reviewed-by: Konrad Dybcio <konrad.dybcio@linaro.org>
Link: https://lore.kernel.org/r/20230619-topic-sm8550-upstream-interconnect-mask-vote-v2-1-709474b151cc@linaro.org
Fixes: fafc114a46 ("interconnect: qcom: Add SM8450 interconnect provider driver")
Signed-off-by: Georgi Djakov <djakov@kernel.org>
This commit is contained in:
Mike Tipton 2023-06-23 14:50:42 +02:00 committed by Georgi Djakov
parent 06c2afb862
commit d8630f050d
2 changed files with 7 additions and 0 deletions
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5
drivers/interconnect/qcom/bcm-voter.c
View file

@ -83,6 +83,11 @@ static void bcm_aggregate(struct qcom_icc_bcm *bcm)
temp = agg_peak[bucket] * bcm->vote_scale;
bcm->vote_y[bucket] = bcm_div(temp, bcm->aux_data.unit);
if (bcm->enable_mask && (bcm->vote_x[bucket] || bcm->vote_y[bucket])) {
bcm->vote_x[bucket] = 0;
bcm->vote_y[bucket] = bcm->enable_mask;
}
}
if (bcm->keepalive && bcm->vote_x[QCOM_ICC_BUCKET_AMC] == 0 &&

2
drivers/interconnect/qcom/icc-rpmh.h
View file

@ -81,6 +81,7 @@ struct qcom_icc_node {
* @vote_x: aggregated threshold values, represents sum_bw when @type is bw bcm
* @vote_y: aggregated threshold values, represents peak_bw when @type is bw bcm
* @vote_scale: scaling factor for vote_x and vote_y
* @enable_mask: optional mask to send as vote instead of vote_x/vote_y
* @dirty: flag used to indicate whether the bcm needs to be committed
* @keepalive: flag used to indicate whether a keepalive is required
* @aux_data: auxiliary data used when calculating threshold values and
@ -97,6 +98,7 @@ struct qcom_icc_bcm {
u64 vote_x[QCOM_ICC_NUM_BUCKETS];
u64 vote_y[QCOM_ICC_NUM_BUCKETS];
u64 vote_scale;
u32 enable_mask;
bool dirty;
bool keepalive;
struct bcm_db aux_data;