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path: root/drivers/pci/dwc/pcie-histb.c
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Diffstat (limited to 'drivers/pci/dwc/pcie-histb.c')
-rw-r--r--drivers/pci/dwc/pcie-histb.c43
1 files changed, 24 insertions, 19 deletions
diff --git a/drivers/pci/dwc/pcie-histb.c b/drivers/pci/dwc/pcie-histb.c
index 70b5c0b108bf..3611d6ce9a92 100644
--- a/drivers/pci/dwc/pcie-histb.c
+++ b/drivers/pci/dwc/pcie-histb.c
@@ -61,6 +61,7 @@ struct histb_pcie {
struct reset_control *bus_reset;
void __iomem *ctrl;
int reset_gpio;
+ struct regulator *vpcie;
};
static u32 histb_pcie_readl(struct histb_pcie *histb_pcie, u32 reg)
@@ -207,13 +208,6 @@ static struct dw_pcie_host_ops histb_pcie_host_ops = {
.host_init = histb_pcie_host_init,
};
-static irqreturn_t histb_pcie_msi_irq_handler(int irq, void *arg)
-{
- struct pcie_port *pp = arg;
-
- return dw_handle_msi_irq(pp);
-}
-
static void histb_pcie_host_disable(struct histb_pcie *hipcie)
{
reset_control_assert(hipcie->soft_reset);
@@ -227,6 +221,9 @@ static void histb_pcie_host_disable(struct histb_pcie *hipcie)
if (gpio_is_valid(hipcie->reset_gpio))
gpio_set_value_cansleep(hipcie->reset_gpio, 0);
+
+ if (hipcie->vpcie)
+ regulator_disable(hipcie->vpcie);
}
static int histb_pcie_host_enable(struct pcie_port *pp)
@@ -237,6 +234,14 @@ static int histb_pcie_host_enable(struct pcie_port *pp)
int ret;
/* power on PCIe device if have */
+ if (hipcie->vpcie) {
+ ret = regulator_enable(hipcie->vpcie);
+ if (ret) {
+ dev_err(dev, "failed to enable regulator: %d\n", ret);
+ return ret;
+ }
+ }
+
if (gpio_is_valid(hipcie->reset_gpio))
gpio_set_value_cansleep(hipcie->reset_gpio, 1);
@@ -276,13 +281,14 @@ static int histb_pcie_host_enable(struct pcie_port *pp)
return 0;
err_aux_clk:
- clk_disable_unprepare(hipcie->aux_clk);
-err_pipe_clk:
clk_disable_unprepare(hipcie->pipe_clk);
-err_sys_clk:
+err_pipe_clk:
clk_disable_unprepare(hipcie->sys_clk);
-err_bus_clk:
+err_sys_clk:
clk_disable_unprepare(hipcie->bus_clk);
+err_bus_clk:
+ if (hipcie->vpcie)
+ regulator_disable(hipcie->vpcie);
return ret;
}
@@ -332,6 +338,13 @@ static int histb_pcie_probe(struct platform_device *pdev)
return PTR_ERR(pci->dbi_base);
}
+ hipcie->vpcie = devm_regulator_get_optional(dev, "vpcie");
+ if (IS_ERR(hipcie->vpcie)) {
+ if (PTR_ERR(hipcie->vpcie) == -EPROBE_DEFER)
+ return -EPROBE_DEFER;
+ hipcie->vpcie = NULL;
+ }
+
hipcie->reset_gpio = of_get_named_gpio_flags(np,
"reset-gpios", 0, &of_flags);
if (of_flags & OF_GPIO_ACTIVE_LOW)
@@ -393,14 +406,6 @@ static int histb_pcie_probe(struct platform_device *pdev)
dev_err(dev, "Failed to get MSI IRQ\n");
return pp->msi_irq;
}
-
- ret = devm_request_irq(dev, pp->msi_irq,
- histb_pcie_msi_irq_handler,
- IRQF_SHARED, "histb-pcie-msi", pp);
- if (ret) {
- dev_err(dev, "cannot request MSI IRQ\n");
- return ret;
- }
}
hipcie->phy = devm_phy_get(dev, "phy");