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Subject[PATCH 12/19] PCI: keystone: Invoke pm_runtime APIs to enable clock
Date
Invoke pm_runtime APIs to enable clocks and remove explicit
clock enabling using clk_prepare_enable().

Signed-off-by: Kishon Vijay Abraham I <kishon@ti.com>
---
drivers/pci/controller/dwc/pci-keystone.c | 28 ++++++++++-------------
1 file changed, 12 insertions(+), 16 deletions(-)

diff --git a/drivers/pci/controller/dwc/pci-keystone.c b/drivers/pci/controller/dwc/pci-keystone.c
index bf37609ad75b..891bdfc5921c 100644
--- a/drivers/pci/controller/dwc/pci-keystone.c
+++ b/drivers/pci/controller/dwc/pci-keystone.c
@@ -96,7 +96,6 @@

struct keystone_pcie {
struct dw_pcie *pci;
- struct clk *clk;
/* PCI Device ID */
u32 device_id;
int num_legacy_host_irqs;
@@ -993,26 +992,22 @@ static int __init ks_pcie_probe(struct platform_device *pdev)
}

platform_set_drvdata(pdev, ks_pcie);
- ks_pcie->clk = devm_clk_get(dev, "pcie");
- if (IS_ERR(ks_pcie->clk)) {
- dev_err(dev, "Failed to get pcie rc clock\n");
- ret = PTR_ERR(ks_pcie->clk);
- goto err_phy;
+ pm_runtime_enable(dev);
+ ret = pm_runtime_get_sync(dev);
+ if (ret < 0) {
+ dev_err(dev, "pm_runtime_get_sync failed\n");
+ goto err_get_sync;
}

- ret = clk_prepare_enable(ks_pcie->clk);
- if (ret)
- goto err_phy;
-
ret = ks_pcie_add_pcie_port(ks_pcie, pdev);
if (ret < 0)
- goto fail_clk;
+ goto err_get_sync;

return 0;
-fail_clk:
- clk_disable_unprepare(ks_pcie->clk);

-err_phy:
+err_get_sync:
+ pm_runtime_put(dev);
+ pm_runtime_disable(dev);
ks_pcie_disable_phy(ks_pcie);

err_link:
@@ -1027,10 +1022,11 @@ static int __exit ks_pcie_remove(struct platform_device *pdev)
struct keystone_pcie *ks_pcie = platform_get_drvdata(pdev);
struct device_link **link = ks_pcie->link;
int num_lanes = ks_pcie->num_lanes;
+ struct device *dev = &pdev->dev;

- clk_disable_unprepare(ks_pcie->clk);
+ pm_runtime_put(dev);
+ pm_runtime_disable(dev);
ks_pcie_disable_phy(ks_pcie);
-
while (num_lanes--)
device_link_del(link[num_lanes]);

--
2.17.1
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