linux-kernel - [PATCH 02/11] soc: qcom: ubwc: add helper to get min

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Message-Id: <20260110-iris-ubwc-v1-2-dd70494dcd7b@oss.qualcomm.com>
Date: Sat, 10 Jan 2026 21:37:54 +0200
From: Dmitry Baryshkov <dmitry.baryshkov@....qualcomm.com>
To: Bjorn Andersson <andersson@...nel.org>,
        Konrad Dybcio <konradybcio@...nel.org>,
        Rob Clark <robin.clark@....qualcomm.com>,
        Dmitry Baryshkov <lumag@...nel.org>,
        Abhinav Kumar <abhinav.kumar@...ux.dev>,
        Jessica Zhang <jesszhan0024@...il.com>, Sean Paul <sean@...rly.run>,
        Marijn Suijten <marijn.suijten@...ainline.org>,
        David Airlie <airlied@...il.com>, Simona Vetter <simona@...ll.ch>,
        Akhil P Oommen <akhilpo@....qualcomm.com>,
        Vikash Garodia <vikash.garodia@....qualcomm.com>,
        Dikshita Agarwal <dikshita.agarwal@....qualcomm.com>,
        Bryan O'Donoghue <bod@...nel.org>,
        Mauro Carvalho Chehab <mchehab@...nel.org>
Cc: Konrad Dybcio <konrad.dybcio@....qualcomm.com>,
        linux-arm-msm@...r.kernel.org, linux-kernel@...r.kernel.org,
        dri-devel@...ts.freedesktop.org, freedreno@...ts.freedesktop.org,
        linux-media@...r.kernel.org
Subject: [PATCH 02/11] soc: qcom: ubwc: add helper to get min_acc length

MDSS and GPU drivers use different approaches to get min_acc length.
Add helper function that can be used by all the drivers.

Signed-off-by: Dmitry Baryshkov <dmitry.baryshkov@....qualcomm.com>
---
 include/linux/soc/qcom/ubwc.h | 7 +++++++
 1 file changed, 7 insertions(+)

diff --git a/include/linux/soc/qcom/ubwc.h b/include/linux/soc/qcom/ubwc.h
index f052e241736c..50d891493ac8 100644
--- a/include/linux/soc/qcom/ubwc.h
+++ b/include/linux/soc/qcom/ubwc.h
@@ -74,4 +74,11 @@ static inline bool qcom_ubwc_get_ubwc_mode(const struct qcom_ubwc_cfg_data *cfg)
 	return ret;
 }
 
+static inline bool qcom_ubwc_min_acc_length_64b(const struct qcom_ubwc_cfg_data *cfg)
+{
+	return cfg->ubwc_enc_version == UBWC_1_0 &&
+		(cfg->ubwc_dec_version == UBWC_2_0 ||
+		 cfg->ubwc_dec_version == UBWC_3_0);
+}
+
 #endif /* __QCOM_UBWC_H__ */

-- 
2.47.3