linux-kernel - Re: [PATCH v8 0/9] PCI: mediatek: fixup find_port, enable

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Date:   Thu, 18 Oct 2018 09:26:24 +0800
From:   Honghui Zhang <honghui.zhang@...iatek.com>
To:     Lorenzo Pieralisi <lorenzo.pieralisi@....com>
CC:     <bhelgaas@...gle.com>, <linux-arm-kernel@...ts.infradead.org>,
        <linux-mediatek@...ts.infradead.org>, <linux-pci@...r.kernel.org>,
        <linux-kernel@...r.kernel.org>, <ryder.lee@...iatek.com>,
        <ulf.hansson@...aro.org>, <marc.zyngier@....com>,
        <matthias.bgg@...il.com>, <devicetree@...r.kernel.org>,
        <yingjoe.chen@...iatek.com>, <eddie.huang@...iatek.com>,
        <youlin.pei@...iatek.com>, <yt.shen@...iatek.com>,
        <jianjun.wang@...iatek.com>, <yong.wu@...iatek.com>
Subject: Re: [PATCH v8 0/9] PCI: mediatek: fixup find_port, enable_msi and
 add PM, module support

On Wed, 2018-10-17 at 16:19 +0100, Lorenzo Pieralisi wrote:
> On Mon, Oct 15, 2018 at 04:08:51PM +0800, honghui.zhang@...iatek.com wrote:
> > From: Honghui Zhang <honghui.zhang@...iatek.com>
> > 
> > This patchset includes misc patchs:
> > 
> > The patch 1 fixup the mtk_pcie_find_port logic which will cause system
> > could not touch the EP's configuration space that connected to PCIe slot 1.
> > 
> > The patch 2 fixup the class type for MT7622.
> > The patch 6 fixup the enable msi logic, the operation to enable MSI
> > should be after system clock is enabled. Call mtk_pcie_enable_msi in
> > mtk_pcie_startup_port_v2 since the clock was all enabled at that time.
> > 
> > The patch 7 was rebased and refactor of the v4 patch[1], changes are:
> >  -Add PM support for MT7622.
> >  -Using mtk_pcie_enable_port to re-establish the link when resumed.
> >  -Rebased on this patchset.
> > 
> > The patch 9 add loadable kernel module support.
> > 
> > [1] https://patchwork.kernel.org/patch/10479079
> 
> I have pushed out (after basically rewriting all commit logs and
> squashing two patches) this version of the patchset to my pci/mediatek
> branch for v4.20, keeping in mind that you must follow-up with Bjorn on
> this patch:

Thanks for your great help with this serial.

> 
> https://patchwork.ozlabs.org/patch/984668/
> 
> that we shall still consider for v4.21.
> 
> Lorenzo
> 
> > Change since v7:
> >  - Add Acked-by tags from Ryder Lee.
> >  - Add Fix tags for patch 2(Fix calss type for MT7622 as PCI_CLASS_BRIDGE_PCI)
> >    and patch 6(Fixup enable MSI logic by enable MSI after clock enabled)
> > 
> > Change since v6:
> >  - Remove the pci_unmap_iospace when remove the device since the
> >    devm_pci_remap_iospace is an devm_ version.
> >  - Commit message changed for patch 2(Fix class type for MT7622 as PCI_CLASS_BRIDGE_PCI).
> >  - Capitilizing "MSI" and "PM" in the patch title.
> > 
> > Change since v5:
> >  - A bit improvement of mtk_pcie_find_port suggest by Lorenzo.
> >    MSI after clock enabled).
> >  - Add Acked-by tags from Ryder.
> > 
> > Change since v4:
> >  - Add patch 2 to fixup class type for MT7622.
> >  - Add patch 3 to remove the redundant dev->pm_domain check
> >  - Add patch 4 to covert to use pci_host_probe
> >  - Add patch 5 to re-arrange the function define, this is a prepare patch for
> >    fixup the enable_msi logic, no functional changed have been made by this one.
> >  - Add patch 8 to save the GIC IRQ in mtk_pcie_port as a prepare patch for tear
> >    down the irq when remove the kernel module.
> >  - Re-arrange the find_port flow suggest by Lorenzo to make the code parse easier
> >    for the patch 1.
> >  - Remove the .pm_support in mtk_pcie_soc in patch 7 since if system pm was not
> >    supported, then those pm callbacks will never be executed for MT7622. So the
> >    .pm_support is not needed.
> > 
> > Change since v3:
> >  - Remove pm_runtime_XXX ops in suspend and resume callbacks in the third patch.
> >  - Rebase to 4.19-rc1.
> > 
> > Change since v2:
> >  - Fix the list_for_each_entry_safe parameter error.
> >  - Add Ryder's Acked-by flag.
> > 
> > Change since v1:
> >  - A bit of code refact of the first patch suggested by Andy Shevchenko, and
> >    commit message updated.
> > 
> > Honghui Zhang (9):
> >   PCI: mediatek: Using slot's devfn for compare to fix
> >     mtk_pcie_find_port logic
> >   PCI: mediatek: Fix class type for MT7622 as PCI_CLASS_BRIDGE_PCI
> >   PCI: mediatek: Remove the redundant dev->pm_domain check
> >   PCI: mediatek: Convert to use pci_host_probe()
> >   PCI: mediatek: Move the mtk_pcie_startup_port_v2 function's define
> >     after mtk_pcie_setup_irq
> >   PCI: mediatek: Fixup enable MSI logic by enable MSI after clock
> >     enabled
> >   PCI: mediatek: Add system PM support for MT2712 and MT7622
> >   PCI: mediatek: Save the GIC IRQ in mtk_pcie_port
> >   PCI: mediatek: Add loadable kernel module support
> > 
> >  drivers/pci/controller/Kconfig         |   2 +-
> >  drivers/pci/controller/pcie-mediatek.c | 319 +++++++++++++++++++++------------
> >  2 files changed, 204 insertions(+), 117 deletions(-)
> > 
> > -- 
> > 2.6.4
> >