linux-kernel - [PATCH V5 0/3] Introduce the read-modify-write API to collect

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Message-ID: <20230720070408.1093698-1-quic_kathirav@quicinc.com>
Date:   Thu, 20 Jul 2023 12:34:05 +0530
From:   Kathiravan T <quic_kathirav@...cinc.com>
To:     Andy Gross <agross@...nel.org>,
        Bjorn Andersson <andersson@...nel.org>,
        Konrad Dybcio <konrad.dybcio@...aro.org>,
        Linus Walleij <linus.walleij@...aro.org>,
        Elliot Berman <quic_eberman@...cinc.com>,
        "Mukesh Ojha" <quic_mojha@...cinc.com>,
        Kalle Valo <kvalo@...nel.org>,
        Loic Poulain <loic.poulain@...aro.org>,
        <linux-arm-msm@...r.kernel.org>, <linux-kernel@...r.kernel.org>,
        <linux-gpio@...r.kernel.org>
CC:     <quic_srichara@...cinc.com>, <quic_sjaganat@...cinc.com>,
        <quic_anusha@...cinc.com>, <quic_saahtoma@...cinc.com>,
        Kathiravan T <quic_kathirav@...cinc.com>
Subject: [PATCH V5 0/3] Introduce the read-modify-write API to collect

On IPQ platforms, to collect the crashdump, we need to just modify the
DLOAD bit in the TCSR register. Current infrastructure, overwrites the
entire regiter value when enabling the crashdump feature, which leads to
crashdump not gets collected. This series introduce the
qcom_scm_io_update_field API to achieve the same.

Intially this approach is posted by Poovendhan[1], later Mukesh
integrated this patch in his minidump support series[2]. Based on the
current feedback on the minidump series, seems it will take sometime to
get into a good shape, in the meantime these patches doesn't have any
dependency with the minidump series. As discussed with the Mukesh[3],
posting these 3 patches to enable the crashdump on IPQ chipsets.

Since the current version of minidump series is V4, I'm posting this as
a V5. Please let me know if this should be V1.

[1]
https://lore.kernel.org/linux-arm-msm/20230113160012.14893-4-quic_poovendh@quicinc.com/

[2]
https://lore.kernel.org/linux-arm-msm/1676990381-18184-3-git-send-email-quic_mojha@quicinc.com/

[3]
https://lore.kernel.org/linux-arm-msm/d77f5601-2b08-a7c7-1400-7ab68b8add3a@quicinc.com/

Mukesh Ojha (3):
  firmware: qcom_scm: provide a read-modify-write function
  pinctrl: qcom: Use qcom_scm_io_update_field()
  firmware: scm: Modify only the download bits in TCSR register

 drivers/firmware/qcom_scm.c            | 26 ++++++++++++++++++++++++--
 drivers/pinctrl/qcom/pinctrl-msm.c     | 12 +++++-------
 include/linux/firmware/qcom/qcom_scm.h |  2 ++
 3 files changed, 31 insertions(+), 9 deletions(-)

-- 
2.34.1