[PATCH 08/13] PCI: dwc: Move MSI interrupt setup into DWC common code
Rob Herring
robh at kernel.org
Thu Oct 29 07:46:41 AEDT 2020
Platforms using the built-in DWC MSI controller all have a dedicated
interrupt with "msi" name or at index 0, so let's move setting up the
interrupt to the common DWC code.
spear13xx and dra7xx are the 2 oddballs with muxed interrupts, so
we need to prevent configuring the MSI interrupt by setting msi_irq
to negative.
Cc: Jingoo Han <jingoohan1 at gmail.com>
Cc: Lorenzo Pieralisi <lorenzo.pieralisi at arm.com>
Cc: Bjorn Helgaas <bhelgaas at google.com>
Cc: Kukjin Kim <kgene at kernel.org>
Cc: Krzysztof Kozlowski <krzk at kernel.org>
Cc: Richard Zhu <hongxing.zhu at nxp.com>
Cc: Lucas Stach <l.stach at pengutronix.de>
Cc: Shawn Guo <shawnguo at kernel.org>
Cc: Sascha Hauer <s.hauer at pengutronix.de>
Cc: Pengutronix Kernel Team <kernel at pengutronix.de>
Cc: Fabio Estevam <festevam at gmail.com>
Cc: NXP Linux Team <linux-imx at nxp.com>
Cc: Yue Wang <yue.wang at Amlogic.com>
Cc: Kevin Hilman <khilman at baylibre.com>
Cc: Neil Armstrong <narmstrong at baylibre.com>
Cc: Jerome Brunet <jbrunet at baylibre.com>
Cc: Martin Blumenstingl <martin.blumenstingl at googlemail.com>
Cc: Jesper Nilsson <jesper.nilsson at axis.com>
Cc: Gustavo Pimentel <gustavo.pimentel at synopsys.com>
Cc: Xiaowei Song <songxiaowei at hisilicon.com>
Cc: Binghui Wang <wangbinghui at hisilicon.com>
Cc: Stanimir Varbanov <svarbanov at mm-sol.com>
Cc: Andy Gross <agross at kernel.org>
Cc: Bjorn Andersson <bjorn.andersson at linaro.org>
Cc: Pratyush Anand <pratyush.anand at gmail.com>
Cc: Thierry Reding <thierry.reding at gmail.com>
Cc: Jonathan Hunter <jonathanh at nvidia.com>
Cc: Kunihiko Hayashi <hayashi.kunihiko at socionext.com>
Cc: Masahiro Yamada <yamada.masahiro at socionext.com>
Cc: linux-samsung-soc at vger.kernel.org
Cc: linux-amlogic at lists.infradead.org
Cc: linux-arm-kernel at axis.com
Cc: linux-arm-msm at vger.kernel.org
Cc: linux-tegra at vger.kernel.org
Signed-off-by: Rob Herring <robh at kernel.org>
---
drivers/pci/controller/dwc/pci-dra7xx.c | 3 +++
drivers/pci/controller/dwc/pci-exynos.c | 6 -----
drivers/pci/controller/dwc/pci-imx6.c | 6 -----
drivers/pci/controller/dwc/pci-meson.c | 6 -----
drivers/pci/controller/dwc/pcie-artpec6.c | 6 -----
.../pci/controller/dwc/pcie-designware-host.c | 11 +++++++++-
.../pci/controller/dwc/pcie-designware-plat.c | 6 -----
drivers/pci/controller/dwc/pcie-histb.c | 6 -----
drivers/pci/controller/dwc/pcie-kirin.c | 22 -------------------
drivers/pci/controller/dwc/pcie-qcom.c | 8 -------
drivers/pci/controller/dwc/pcie-spear13xx.c | 1 +
drivers/pci/controller/dwc/pcie-tegra194.c | 8 -------
drivers/pci/controller/dwc/pcie-uniphier.c | 6 -----
13 files changed, 14 insertions(+), 81 deletions(-)
diff --git a/drivers/pci/controller/dwc/pci-dra7xx.c b/drivers/pci/controller/dwc/pci-dra7xx.c
index 4d0c35a4aa59..6b75c68dddb5 100644
--- a/drivers/pci/controller/dwc/pci-dra7xx.c
+++ b/drivers/pci/controller/dwc/pci-dra7xx.c
@@ -489,6 +489,9 @@ static int __init dra7xx_add_pcie_port(struct dra7xx_pcie *dra7xx,
if (pp->irq < 0)
return pp->irq;
+ /* MSI IRQ is muxed */
+ pp->msi_irq = -ENODEV;
+
ret = dra7xx_pcie_init_irq_domain(pp);
if (ret < 0)
return ret;
diff --git a/drivers/pci/controller/dwc/pci-exynos.c b/drivers/pci/controller/dwc/pci-exynos.c
index 242683cde04a..7734394953e5 100644
--- a/drivers/pci/controller/dwc/pci-exynos.c
+++ b/drivers/pci/controller/dwc/pci-exynos.c
@@ -415,12 +415,6 @@ static int __init exynos_add_pcie_port(struct exynos_pcie *ep,
return ret;
}
- if (IS_ENABLED(CONFIG_PCI_MSI)) {
- pp->msi_irq = platform_get_irq(pdev, 0);
- if (pp->msi_irq < 0)
- return pp->msi_irq;
- }
-
pp->ops = &exynos_pcie_host_ops;
ret = dw_pcie_host_init(pp);
diff --git a/drivers/pci/controller/dwc/pci-imx6.c b/drivers/pci/controller/dwc/pci-imx6.c
index 7dd137d62dca..1b979c956fcd 100644
--- a/drivers/pci/controller/dwc/pci-imx6.c
+++ b/drivers/pci/controller/dwc/pci-imx6.c
@@ -853,12 +853,6 @@ static int imx6_add_pcie_port(struct imx6_pcie *imx6_pcie,
struct device *dev = &pdev->dev;
int ret;
- if (IS_ENABLED(CONFIG_PCI_MSI)) {
- pp->msi_irq = platform_get_irq_byname(pdev, "msi");
- if (pp->msi_irq < 0)
- return pp->msi_irq;
- }
-
pp->ops = &imx6_pcie_host_ops;
ret = dw_pcie_host_init(pp);
diff --git a/drivers/pci/controller/dwc/pci-meson.c b/drivers/pci/controller/dwc/pci-meson.c
index 1913dc2c8fa0..10d65b3093e4 100644
--- a/drivers/pci/controller/dwc/pci-meson.c
+++ b/drivers/pci/controller/dwc/pci-meson.c
@@ -405,12 +405,6 @@ static int meson_add_pcie_port(struct meson_pcie *mp,
struct device *dev = &pdev->dev;
int ret;
- if (IS_ENABLED(CONFIG_PCI_MSI)) {
- pp->msi_irq = platform_get_irq(pdev, 0);
- if (pp->msi_irq < 0)
- return pp->msi_irq;
- }
-
pp->ops = &meson_pcie_host_ops;
ret = dw_pcie_host_init(pp);
diff --git a/drivers/pci/controller/dwc/pcie-artpec6.c b/drivers/pci/controller/dwc/pcie-artpec6.c
index 52ad7909cd0c..a5239a58cee0 100644
--- a/drivers/pci/controller/dwc/pcie-artpec6.c
+++ b/drivers/pci/controller/dwc/pcie-artpec6.c
@@ -348,12 +348,6 @@ static int artpec6_add_pcie_port(struct artpec6_pcie *artpec6_pcie,
struct device *dev = pci->dev;
int ret;
- if (IS_ENABLED(CONFIG_PCI_MSI)) {
- pp->msi_irq = platform_get_irq_byname(pdev, "msi");
- if (pp->msi_irq < 0)
- return pp->msi_irq;
- }
-
pp->ops = &artpec6_pcie_host_ops;
ret = dw_pcie_host_init(pp);
diff --git a/drivers/pci/controller/dwc/pcie-designware-host.c b/drivers/pci/controller/dwc/pcie-designware-host.c
index 1bd6a9762426..0f77e4d4b385 100644
--- a/drivers/pci/controller/dwc/pcie-designware-host.c
+++ b/drivers/pci/controller/dwc/pcie-designware-host.c
@@ -373,13 +373,22 @@ int dw_pcie_host_init(struct pcie_port *pp)
}
if (!pp->ops->msi_host_init) {
+ if (!pp->msi_irq) {
+ pp->msi_irq = platform_get_irq_byname(pdev, "msi");
+ if (pp->msi_irq < 0) {
+ pp->msi_irq = platform_get_irq(pdev, 0);
+ if (pp->msi_irq < 0)
+ return pp->msi_irq;
+ }
+ }
+
pp->msi_irq_chip = &dw_pci_msi_bottom_irq_chip;
ret = dw_pcie_allocate_domains(pp);
if (ret)
return ret;
- if (pp->msi_irq)
+ if (pp->msi_irq > 0)
irq_set_chained_handler_and_data(pp->msi_irq,
dw_chained_msi_isr,
pp);
diff --git a/drivers/pci/controller/dwc/pcie-designware-plat.c b/drivers/pci/controller/dwc/pcie-designware-plat.c
index 13fede1d4157..3da38ac6a87a 100644
--- a/drivers/pci/controller/dwc/pcie-designware-plat.c
+++ b/drivers/pci/controller/dwc/pcie-designware-plat.c
@@ -116,12 +116,6 @@ static int dw_plat_add_pcie_port(struct dw_plat_pcie *dw_plat_pcie,
if (pp->irq < 0)
return pp->irq;
- if (IS_ENABLED(CONFIG_PCI_MSI)) {
- pp->msi_irq = platform_get_irq(pdev, 0);
- if (pp->msi_irq < 0)
- return pp->msi_irq;
- }
-
pp->num_vectors = MAX_MSI_IRQS;
pp->ops = &dw_plat_pcie_host_ops;
diff --git a/drivers/pci/controller/dwc/pcie-histb.c b/drivers/pci/controller/dwc/pcie-histb.c
index afc1abbe49aa..777e24902afb 100644
--- a/drivers/pci/controller/dwc/pcie-histb.c
+++ b/drivers/pci/controller/dwc/pcie-histb.c
@@ -400,12 +400,6 @@ static int histb_pcie_probe(struct platform_device *pdev)
return PTR_ERR(hipcie->bus_reset);
}
- if (IS_ENABLED(CONFIG_PCI_MSI)) {
- pp->msi_irq = platform_get_irq_byname(pdev, "msi");
- if (pp->msi_irq < 0)
- return pp->msi_irq;
- }
-
hipcie->phy = devm_phy_get(dev, "phy");
if (IS_ERR(hipcie->phy)) {
dev_info(dev, "no pcie-phy found\n");
diff --git a/drivers/pci/controller/dwc/pcie-kirin.c b/drivers/pci/controller/dwc/pcie-kirin.c
index 3042a23cf09a..ba03dbca7885 100644
--- a/drivers/pci/controller/dwc/pcie-kirin.c
+++ b/drivers/pci/controller/dwc/pcie-kirin.c
@@ -439,31 +439,9 @@ static const struct dw_pcie_host_ops kirin_pcie_host_ops = {
.host_init = kirin_pcie_host_init,
};
-static int kirin_pcie_add_msi(struct dw_pcie *pci,
- struct platform_device *pdev)
-{
- int irq;
-
- if (IS_ENABLED(CONFIG_PCI_MSI)) {
- irq = platform_get_irq(pdev, 0);
- if (irq < 0)
- return irq;
-
- pci->pp.msi_irq = irq;
- }
-
- return 0;
-}
-
static int kirin_add_pcie_port(struct dw_pcie *pci,
struct platform_device *pdev)
{
- int ret;
-
- ret = kirin_pcie_add_msi(pci, pdev);
- if (ret)
- return ret;
-
pci->pp.ops = &kirin_pcie_host_ops;
return dw_pcie_host_init(&pci->pp);
diff --git a/drivers/pci/controller/dwc/pcie-qcom.c b/drivers/pci/controller/dwc/pcie-qcom.c
index 3b4f70b9f3f0..7ac08f0cae17 100644
--- a/drivers/pci/controller/dwc/pcie-qcom.c
+++ b/drivers/pci/controller/dwc/pcie-qcom.c
@@ -1424,14 +1424,6 @@ static int qcom_pcie_probe(struct platform_device *pdev)
pp->ops = &qcom_pcie_dw_ops;
- if (IS_ENABLED(CONFIG_PCI_MSI)) {
- pp->msi_irq = platform_get_irq_byname(pdev, "msi");
- if (pp->msi_irq < 0) {
- ret = pp->msi_irq;
- goto err_pm_runtime_put;
- }
- }
-
ret = phy_init(pcie->phy);
if (ret) {
pm_runtime_disable(&pdev->dev);
diff --git a/drivers/pci/controller/dwc/pcie-spear13xx.c b/drivers/pci/controller/dwc/pcie-spear13xx.c
index 1ed7e3501ff1..800c34a60a33 100644
--- a/drivers/pci/controller/dwc/pcie-spear13xx.c
+++ b/drivers/pci/controller/dwc/pcie-spear13xx.c
@@ -185,6 +185,7 @@ static int spear13xx_add_pcie_port(struct spear13xx_pcie *spear13xx_pcie,
}
pp->ops = &spear13xx_pcie_host_ops;
+ pp->msi_irq = -ENODEV;
ret = dw_pcie_host_init(pp);
if (ret) {
diff --git a/drivers/pci/controller/dwc/pcie-tegra194.c b/drivers/pci/controller/dwc/pcie-tegra194.c
index 5e2841f58700..77fc3ba3dec1 100644
--- a/drivers/pci/controller/dwc/pcie-tegra194.c
+++ b/drivers/pci/controller/dwc/pcie-tegra194.c
@@ -1554,14 +1554,6 @@ static int tegra_pcie_config_rp(struct tegra_pcie_dw *pcie)
char *name;
int ret;
- if (IS_ENABLED(CONFIG_PCI_MSI)) {
- pp->msi_irq = of_irq_get_byname(dev->of_node, "msi");
- if (!pp->msi_irq) {
- dev_err(dev, "Failed to get MSI interrupt\n");
- return -ENODEV;
- }
- }
-
pm_runtime_enable(dev);
ret = pm_runtime_get_sync(dev);
diff --git a/drivers/pci/controller/dwc/pcie-uniphier.c b/drivers/pci/controller/dwc/pcie-uniphier.c
index 33130fb4af90..6198bd106b8a 100644
--- a/drivers/pci/controller/dwc/pcie-uniphier.c
+++ b/drivers/pci/controller/dwc/pcie-uniphier.c
@@ -341,12 +341,6 @@ static int uniphier_add_pcie_port(struct uniphier_pcie_priv *priv,
pp->ops = &uniphier_pcie_host_ops;
- if (IS_ENABLED(CONFIG_PCI_MSI)) {
- pp->msi_irq = platform_get_irq_byname(pdev, "msi");
- if (pp->msi_irq < 0)
- return pp->msi_irq;
- }
-
ret = dw_pcie_host_init(pp);
if (ret) {
dev_err(dev, "Failed to initialize host (%d)\n", ret);
--
2.25.1
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