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| author | Vidya Sagar <vidyas@nvidia.com> | 2022-07-21 19:50:49 +0530 |
|---|---|---|
| committer | Bjorn Helgaas <bhelgaas@google.com> | 2022-07-22 17:14:57 -0500 |
| commit | bb617cbd81513092ae48ff7dfcaf766312b57bcf (patch) | |
| tree | 6ae42fa0972b37ce5fb712b402823334735dc613 /drivers/pci | |
| parent | 4fb8e46c1bc4ee16d8b4ec53933b2ed46e31e158 (diff) | |
| download | linux-stable-bb617cbd81513092ae48ff7dfcaf766312b57bcf.tar.gz linux-stable-bb617cbd81513092ae48ff7dfcaf766312b57bcf.tar.bz2 linux-stable-bb617cbd81513092ae48ff7dfcaf766312b57bcf.zip | |
PCI: tegra194: Clean up the exit path for Endpoint mode
Clean up the exit path during .remove() and .shutdown() calls when in
Endpoint mode.
Link: https://lore.kernel.org/r/20220721142052.25971-14-vidyas@nvidia.com
Signed-off-by: Vidya Sagar <vidyas@nvidia.com>
Signed-off-by: Bjorn Helgaas <bhelgaas@google.com>
Diffstat (limited to 'drivers/pci')
| -rw-r--r-- | drivers/pci/controller/dwc/pcie-tegra194.c | 45 |
1 files changed, 31 insertions, 14 deletions
diff --git a/drivers/pci/controller/dwc/pcie-tegra194.c b/drivers/pci/controller/dwc/pcie-tegra194.c index f82c70be72ef..39f7ae61fdc6 100644 --- a/drivers/pci/controller/dwc/pcie-tegra194.c +++ b/drivers/pci/controller/dwc/pcie-tegra194.c @@ -2145,12 +2145,18 @@ static int tegra_pcie_dw_remove(struct platform_device *pdev) { struct tegra_pcie_dw *pcie = platform_get_drvdata(pdev); - if (!pcie->link_state) - return 0; + if (pcie->mode == DW_PCIE_RC_TYPE) { + if (!pcie->link_state) + return 0; + + debugfs_remove_recursive(pcie->debugfs); + tegra_pcie_deinit_controller(pcie); + pm_runtime_put_sync(pcie->dev); + } else { + disable_irq(pcie->pex_rst_irq); + pex_ep_event_pex_rst_assert(pcie); + } - debugfs_remove_recursive(pcie->debugfs); - tegra_pcie_deinit_controller(pcie); - pm_runtime_put_sync(pcie->dev); pm_runtime_disable(pcie->dev); tegra_bpmp_put(pcie->bpmp); if (pcie->pex_refclk_sel_gpiod) @@ -2164,6 +2170,11 @@ static int tegra_pcie_dw_suspend_late(struct device *dev) struct tegra_pcie_dw *pcie = dev_get_drvdata(dev); u32 val; + if (pcie->mode == DW_PCIE_EP_TYPE) { + dev_err(dev, "Failed to Suspend as Tegra PCIe is in EP mode\n"); + return -EPERM; + } + if (!pcie->link_state) return 0; @@ -2251,18 +2262,24 @@ static void tegra_pcie_dw_shutdown(struct platform_device *pdev) { struct tegra_pcie_dw *pcie = platform_get_drvdata(pdev); - if (!pcie->link_state) - return; + if (pcie->mode == DW_PCIE_RC_TYPE) { + if (!pcie->link_state) + return; - debugfs_remove_recursive(pcie->debugfs); - tegra_pcie_downstream_dev_to_D0(pcie); + debugfs_remove_recursive(pcie->debugfs); + tegra_pcie_downstream_dev_to_D0(pcie); - disable_irq(pcie->pci.pp.irq); - if (IS_ENABLED(CONFIG_PCI_MSI)) - disable_irq(pcie->pci.pp.msi_irq); + disable_irq(pcie->pci.pp.irq); + if (IS_ENABLED(CONFIG_PCI_MSI)) + disable_irq(pcie->pci.pp.msi_irq); - tegra_pcie_dw_pme_turnoff(pcie); - tegra_pcie_unconfig_controller(pcie); + tegra_pcie_dw_pme_turnoff(pcie); + tegra_pcie_unconfig_controller(pcie); + pm_runtime_put_sync(pcie->dev); + } else { + disable_irq(pcie->pex_rst_irq); + pex_ep_event_pex_rst_assert(pcie); + } } static const struct tegra_pcie_dw_of_data tegra_pcie_dw_rc_of_data = { |