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Merge branch 'pci/controller/exynos'

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- Use devm_clk_bulk_get_all_enable() to simplify clock setup (Shradha Todi)

* pci/controller/exynos:
  PCI: exynos: Adapt to use bulk clock APIs
This commit is contained in:
Bjorn Helgaas 2024-07-19 10:10:27 -05:00
commit da3552d225
1 changed files with 4 additions and 50 deletions
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54
drivers/pci/controller/dwc/pci-exynos.c
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@ -54,43 +54,11 @@
struct exynos_pcie {
struct dw_pcie pci;
void __iomem *elbi_base;
struct clk *clk;
struct clk *bus_clk;
struct clk_bulk_data *clks;
struct phy *phy;
struct regulator_bulk_data supplies[2];
};
static int exynos_pcie_init_clk_resources(struct exynos_pcie *ep)
{
struct device *dev = ep->pci.dev;
int ret;
ret = clk_prepare_enable(ep->clk);
if (ret) {
dev_err(dev, "cannot enable pcie rc clock");
return ret;
}
ret = clk_prepare_enable(ep->bus_clk);
if (ret) {
dev_err(dev, "cannot enable pcie bus clock");
goto err_bus_clk;
}
return 0;
err_bus_clk:
clk_disable_unprepare(ep->clk);
return ret;
}
static void exynos_pcie_deinit_clk_resources(struct exynos_pcie *ep)
{
clk_disable_unprepare(ep->bus_clk);
clk_disable_unprepare(ep->clk);
}
static void exynos_pcie_writel(void __iomem *base, u32 val, u32 reg)
{
writel(val, base + reg);
@ -332,17 +300,9 @@ static int exynos_pcie_probe(struct platform_device *pdev)
if (IS_ERR(ep->elbi_base))
return PTR_ERR(ep->elbi_base);
ep->clk = devm_clk_get(dev, "pcie");
if (IS_ERR(ep->clk)) {
dev_err(dev, "Failed to get pcie rc clock\n");
return PTR_ERR(ep->clk);
}
ep->bus_clk = devm_clk_get(dev, "pcie_bus");
if (IS_ERR(ep->bus_clk)) {
dev_err(dev, "Failed to get pcie bus clock\n");
return PTR_ERR(ep->bus_clk);
}
ret = devm_clk_bulk_get_all_enable(dev, &ep->clks);
if (ret < 0)
return ret;
ep->supplies[0].supply = "vdd18";
ep->supplies[1].supply = "vdd10";
@ -351,10 +311,6 @@ static int exynos_pcie_probe(struct platform_device *pdev)
if (ret)
return ret;
ret = exynos_pcie_init_clk_resources(ep);
if (ret)
return ret;
ret = regulator_bulk_enable(ARRAY_SIZE(ep->supplies), ep->supplies);
if (ret)
return ret;
@ -369,7 +325,6 @@ static int exynos_pcie_probe(struct platform_device *pdev)
fail_probe:
phy_exit(ep->phy);
exynos_pcie_deinit_clk_resources(ep);
regulator_bulk_disable(ARRAY_SIZE(ep->supplies), ep->supplies);
return ret;
@ -383,7 +338,6 @@ static void exynos_pcie_remove(struct platform_device *pdev)
exynos_pcie_assert_core_reset(ep);
phy_power_off(ep->phy);
phy_exit(ep->phy);
exynos_pcie_deinit_clk_resources(ep);
regulator_bulk_disable(ARRAY_SIZE(ep->supplies), ep->supplies);
}