linux-kernel - [PATCH v3 0/3] Add sysfs entry to EDL mode

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Message-Id: <1713170945-44640-1-git-send-email-quic_qianyu@quicinc.com>
Date: Mon, 15 Apr 2024 16:49:02 +0800
From: Qiang Yu <quic_qianyu@...cinc.com>
To: mani@...nel.org, quic_jhugo@...cinc.com
Cc: mhi@...ts.linux.dev, linux-arm-msm@...r.kernel.org,
        linux-kernel@...r.kernel.org, quic_cang@...cinc.com,
        quic_mrana@...cinc.com, Qiang Yu <quic_qianyu@...cinc.com>
Subject: [PATCH v3 0/3] Add sysfs entry to EDL mode

Add EDL sysfs entry for mhi controller that provides edl_trigger callback.
Add mhi_pci_generic_edl_trigger for qualcomm sdx55,sdx65 and sdx75 as
edl_trigger callback.

v2->v3:
1. Update Documentation/ABI/stable/sysfs-bus-mhi with description of
   force_edl sysfs entry.

2. Add comments about edl_trigger callback in mhi_controller struct.

3. Follow reverse christmas tree in mhi_pci_generic_edl_trigger.

4. Add a new API in MHI to allow controller to get CHDB address and avoid
   duplicating the definition of CHDBOFF.

v1->v2:
1. Move all process needed by qualcomm sdx55,sdx65,sdx75 to enter EDL into
   mhi_pci_generic_edl_trigger() as the callback to edl_trigger.

2. MHI stack creates EDL sysfs entry to invoke edl_trigger callback so
   that devices need different mechanism to enter EDL can provide its own
   edl_trigger callabck .

Qiang Yu (3):
  bus: mhi: host: Add sysfs entry to force device to enter EDL
  bus: mhi: host: Add a new API for getting channel doorbell address
  bus: mhi: host: pci_generic: Add edl callback to enter EDL

 Documentation/ABI/stable/sysfs-bus-mhi | 11 ++++++++
 drivers/bus/mhi/host/init.c            | 35 +++++++++++++++++++++++++
 drivers/bus/mhi/host/main.c            | 17 ++++++++++++
 drivers/bus/mhi/host/pci_generic.c     | 47 ++++++++++++++++++++++++++++++++++
 include/linux/mhi.h                    |  9 +++++++
 5 files changed, 119 insertions(+)

-- 
2.7.4