From mboxrd@z Thu Jan 1 00:00:00 1970 Received: from smtp.kernel.org (aws-us-west-2-korg-mail-1.web.codeaurora.org [10.30.226.201]) (using TLSv1.2 with cipher ECDHE-RSA-AES256-GCM-SHA384 (256/256 bits)) (No client certificate requested) by smtp.subspace.kernel.org (Postfix) with ESMTPS id 884A11A70F; Mon, 27 Nov 2023 11:45:58 +0000 (UTC) Authentication-Results: smtp.subspace.kernel.org; dkim=pass (2048-bit key) header.d=kernel.org header.i=@kernel.org header.b="UeV3OYey" Received: by smtp.kernel.org (Postfix) with ESMTPSA id 22067C433C8; Mon, 27 Nov 2023 11:45:53 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=kernel.org; s=k20201202; t=1701085558; bh=/SPiK+nM81I2NeYQHSsmaqOtUX9qlKShEsdKW1Xgo54=; h=From:To:Cc:Subject:Date:In-Reply-To:References:From; b=UeV3OYeyFIr9Ll7fbpmmGpyz3uKF6e8h1RE9Ih3UtcFmzDu0xe7stOLB1kFa45cHP 7W8ETpegQt1J09gK3AsGsrDpQkD7B+S6Ay/ql3oI3xwDpgkq4ytSAZ097Hf2mPStFA O/r00GFVG3GFyOip9cnRuvAVkRI2s8sazdq8BN7xqAE4zcRQ6JGxm7rcG/MmyB+/B3 galFOVHPSFyvL5PB+8HKkS3gc9Knb59lyOum3+FCZRrTu30n97RVYwvMKZvLP9u2YR QTsrz80hpMJwNYudGnXE1aYUctgC4m7yEFwRhJN3wmx2sfTPMWnsuKTaLy0U+TKwwH 71Bmx6gOs7bNw== From: djakov@kernel.org To: linux@roeck-us.net, sam@gentoo.org, gregkh@linuxfoundation.org Cc: akpm@linux-foundation.org, allen.lkml@gmail.com, conor@kernel.org, f.fainelli@gmail.com, jonathanh@nvidia.com, linux-kernel@vger.kernel.org, lkft-triage@lists.linaro.org, patches@kernelci.org, patches@lists.linux.dev, pavel@denx.de, rwarsow@gmx.de, shuah@kernel.org, srw@sladewatkins.net, stable@vger.kernel.org, sudipm.mukherjee@gmail.com, torvalds@linux-foundation.org, djakov@kernel.org Subject: [PATCH 5.10] interconnect: qcom: Add support for mask-based BCMs Date: Mon, 27 Nov 2023 13:45:51 +0200 Message-Id: <20231127114551.1043891-1-djakov@kernel.org> X-Mailer: git-send-email 2.34.1 In-Reply-To: <05678c48-bac1-4f17-99f8-21b566c17a6e@roeck-us.net> References: <05678c48-bac1-4f17-99f8-21b566c17a6e@roeck-us.net> Precedence: bulk X-Mailing-List: stable@vger.kernel.org List-Id: List-Subscribe: List-Unsubscribe: MIME-Version: 1.0 Content-Transfer-Encoding: 8bit From: Georgi Djakov From: Mike Tipton [ Upstream commit d8630f050d3fd2079f8617dd6c00c6509109c755 ] 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: https://git.codelinaro.org/clo/la/kernel/msm-5.15/-/commit/2d1573e0206998151b342e6b52a4c0f7234d7e36 Signed-off-by: Mike Tipton [narmstrong: removed copyright change from original commit] Signed-off-by: Neil Armstrong Reviewed-by: Konrad Dybcio Link: https://lore.kernel.org/r/20230619-topic-sm8550-upstream-interconnect-mask-vote-v2-1-709474b151cc@linaro.org Fixes: fafc114a468e ("interconnect: qcom: Add SM8450 interconnect provider driver") Fixes: 2d1f95ab9feb ("interconnect: qcom: Add SC7180 interconnect provider driver") Signed-off-by: Georgi Djakov --- There is a build error reported in the 5.10.201 stable tree (arm64 allmodconfig), which is caused by a patch that has a dependency we missed to backport. This is the missing patch that we need to get into 5.10.202 to fix the build failure. Thanks to Guenter and Sam for reporting that! drivers/interconnect/qcom/bcm-voter.c | 5 +++++ drivers/interconnect/qcom/icc-rpmh.h | 2 ++ 2 files changed, 7 insertions(+) diff --git a/drivers/interconnect/qcom/bcm-voter.c b/drivers/interconnect/qcom/bcm-voter.c index 3c0809095a31..320e418cf753 100644 --- a/drivers/interconnect/qcom/bcm-voter.c +++ b/drivers/interconnect/qcom/bcm-voter.c @@ -90,6 +90,11 @@ 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 && diff --git a/drivers/interconnect/qcom/icc-rpmh.h b/drivers/interconnect/qcom/icc-rpmh.h index e5f61ab989e7..029a350c2884 100644 --- a/drivers/interconnect/qcom/icc-rpmh.h +++ b/drivers/interconnect/qcom/icc-rpmh.h @@ -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;