linux-kernel - [RFC/RFT PATCH 0/5] Clean up UFS(-qcom) MCQ situation

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Message-Id: <20250704-topic-qcom_ufs_mcq_cleanup-v1-0-c70d01b3d334@oss.qualcomm.com>
Date: Fri, 04 Jul 2025 19:36:08 +0200
From: Konrad Dybcio <konradybcio@...nel.org>
To: Manivannan Sadhasivam <mani@...nel.org>, 
 "James E.J. Bottomley" <James.Bottomley@...senPartnership.com>, 
 "Martin K. Petersen" <martin.petersen@...cle.com>, 
 Asutosh Das <quic_asutoshd@...cinc.com>, 
 Bart Van Assche <bvanassche@....org>, 
 Stanley Chu <stanley.chu@...iatek.com>
Cc: Marijn Suijten <marijn.suijten@...ainline.org>, 
 Can Guo <quic_cang@...cinc.com>, Nitin Rawat <quic_nitirawa@...cinc.com>, 
 linux-arm-msm@...r.kernel.org, linux-scsi@...r.kernel.org, 
 linux-kernel@...r.kernel.org, 
 Konrad Dybcio <konrad.dybcio@....qualcomm.com>
Subject: [RFC/RFT PATCH 0/5] Clean up UFS(-qcom) MCQ situation

The initial implementation was quite messy, including requesting
regions that do not really exist in hardware (or at least not in the
way they were described).

As we have no users (and the corresponding dt-bindings were never even
accepted), remove a whole lot of boilerplate code and clean up the
software's expectations.

Note that this revision does not fix the bindings defficiency yet.

Compile-tested only & not the best code I've written, but I'm looking
for feedback whether this approach is acceptable.

Signed-off-by: Konrad Dybcio <konrad.dybcio@....qualcomm.com>
---
Konrad Dybcio (5):
      ufs: ufs-qcom: Fix UFS base region name in MCQ case
      ufs: ufs-qcom: Remove inferred MCQ mappings
      ufs: ufs-qcom: Don't try to map inexistent regions
      ufs: ufs-qcom: Rename "mcq_sqd" to "mcq_opr"
      ufs: ufs-qcom: Kill ufshcd_res_info

 drivers/ufs/host/ufs-qcom.c      | 151 ++++++++++-----------------------------
 drivers/ufs/host/ufs-qcom.h      |   4 ++
 drivers/ufs/host/ufshcd-pltfrm.c |   4 +-
 include/ufs/ufshcd.h             |  26 +------
 4 files changed, 45 insertions(+), 140 deletions(-)
---
base-commit: 26ffb3d6f02cd0935fb9fa3db897767beee1cb2a
change-id: 20250704-topic-qcom_ufs_mcq_cleanup-3e7614ae06a8

Best regards,
-- 
Konrad Dybcio <konrad.dybcio@....qualcomm.com>