linux-kernel - [PATCH v7 0/4] PCI: endpoint: add D-state change notifier support

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Message-ID: <20240710-dstate_notifier-v7-0-8d45d87b2b24@quicinc.com>
Date: Wed, 10 Jul 2024 16:38:13 +0530
From: Krishna chaitanya chundru <quic_krichai@...cinc.com>
To: Manivannan Sadhasivam <manivannan.sadhasivam@...aro.org>,
        Krzysztof Wilczyński <kw@...ux.com>,
        Kishon Vijay Abraham I
	<kishon@...nel.org>,
        Bjorn Helgaas <bhelgaas@...gle.com>, Jonathan Corbet
	<corbet@....net>,
        Lorenzo Pieralisi <lpieralisi@...nel.org>,
        Rob Herring
	<robh@...nel.org>
CC: <linux-pci@...r.kernel.org>, <linux-doc@...r.kernel.org>,
        <linux-kernel@...r.kernel.org>, <linux-arm-msm@...r.kernel.org>,
        <mhi@...ts.linux.dev>, <quic_vbadigan@...cinc.com>,
        <quic_ramkri@...cinc.com>, <quic_nitegupt@...cinc.com>,
        <quic_skananth@...cinc.com>, <quic_parass@...cinc.com>,
        "Krishna chaitanya
 chundru" <quic_krichai@...cinc.com>,
        Manivannan Sadhasivam <mani@...nel.org>
Subject: [PATCH v7 0/4] PCI: endpoint: add D-state change notifier support

In this series we added the support to nofity the EPF driver
whenever there is change in the D-state if the EPF driver
registered for it.

This series needed by the following series for epf driver to know
whether link is in D3Cold or D3hot to wake the host because EPF driver
needs to send PME when the link is D3hot and toggle wake when the link
is in D3Cold('PCI: EPC: Add support to wake up host from D3 states').

The following link is for older series a newer series will be sent after
rebasing on this series.
https://lore.kernel.org/linux-pci/1690952359-8625-4-git-send-email-quic_krichai@quicinc.com/T/

Signed-off-by: Krishna chaitanya chundru <quic_krichai@...cinc.com>
---
Changes from v6:
	- Rebased on linux next.
	- Link to v6: https://lore.kernel.org/all/20230908-dstate_change-v6-0-b414a6edd765@quicinc.com/T/
Changes from v5:
	- Fixed compilation errors & removed checks in the dstate_notify()
	  function as suggested by bjorn.

---
Krishna chaitanya chundru (4):
      PCI: endpoint: Add D-state change notifier support
      PCI: qcom-ep: Add support for D-state change notification
      PCI: qcom-ep: Print D-state name to distinguish D3hot/D3cold
      PCI: epf-mhi: Add support for handling D-state notify from EPC

 Documentation/PCI/endpoint/pci-endpoint.rst  |  3 +++
 drivers/pci/controller/dwc/pcie-qcom-ep.c    | 10 ++++++++--
 drivers/pci/endpoint/functions/pci-epf-mhi.c | 11 +++++++++++
 drivers/pci/endpoint/pci-epc-core.c          | 24 ++++++++++++++++++++++++
 include/linux/mhi_ep.h                       |  3 +++
 include/linux/pci-epc.h                      |  2 ++
 include/linux/pci-epf.h                      |  2 ++
 7 files changed, 53 insertions(+), 2 deletions(-)
---
base-commit: 82d01fe6ee52086035b201cfa1410a3b04384257
change-id: 20240710-dstate_notifier-2c2f4e2b4eed

Best regards,
-- 
Krishna chaitanya chundru <quic_krichai@...cinc.com>