[PATCH 5/9] PCI: tegra: Explicitly specify PMC instance to use

[Thierry Reding]

From: Thierry Reding <treding@xxxxxxxxxx>

Currently the kernel relies on a global variable to reference the PMC
context. Use an explicit lookup for the PMC and pass that to the public
PMC APIs.

Signed-off-by: Thierry Reding <treding@xxxxxxxxxx>
---
 drivers/pci/controller/pci-tegra.c | 20 +++++++++++++++-----
 1 file changed, 15 insertions(+), 5 deletions(-)

diff --git a/drivers/pci/controller/pci-tegra.c b/drivers/pci/controller/pci-tegra.c
index 512309763d1f..2c6c521e6901 100644
--- a/drivers/pci/controller/pci-tegra.c
+++ b/drivers/pci/controller/pci-tegra.c
@@ -340,6 +340,8 @@ struct tegra_pcie {
 	struct reset_control *afi_rst;
 	struct reset_control *pcie_xrst;
 
+	struct tegra_pmc *pmc;
+
 	bool legacy_phy;
 	struct phy *phy;
 
@@ -1165,7 +1167,7 @@ static void tegra_pcie_power_off(struct tegra_pcie *pcie)
 	clk_disable_unprepare(pcie->afi_clk);
 
 	if (!dev->pm_domain)
-		tegra_powergate_power_off(TEGRA_POWERGATE_PCIE);
+		tegra_pmc_powergate_power_off(pcie->pmc, TEGRA_POWERGATE_PCIE);
 
 	err = regulator_bulk_disable(pcie->num_supplies, pcie->supplies);
 	if (err < 0)
@@ -1183,7 +1185,7 @@ static int tegra_pcie_power_on(struct tegra_pcie *pcie)
 	reset_control_assert(pcie->pex_rst);
 
 	if (!dev->pm_domain)
-		tegra_powergate_power_off(TEGRA_POWERGATE_PCIE);
+		tegra_pmc_powergate_power_off(pcie->pmc, TEGRA_POWERGATE_PCIE);
 
 	/* enable regulators */
 	err = regulator_bulk_enable(pcie->num_supplies, pcie->supplies);
@@ -1191,12 +1193,14 @@ static int tegra_pcie_power_on(struct tegra_pcie *pcie)
 		dev_err(dev, "failed to enable regulators: %d\n", err);
 
 	if (!dev->pm_domain) {
-		err = tegra_powergate_power_on(TEGRA_POWERGATE_PCIE);
+		err = tegra_pmc_powergate_power_on(pcie->pmc,
+						   TEGRA_POWERGATE_PCIE);
 		if (err) {
 			dev_err(dev, "failed to power ungate: %d\n", err);
 			goto regulator_disable;
 		}
-		err = tegra_powergate_remove_clamping(TEGRA_POWERGATE_PCIE);
+		err = tegra_pmc_powergate_remove_clamping(pcie->pmc,
+							  TEGRA_POWERGATE_PCIE);
 		if (err) {
 			dev_err(dev, "failed to remove clamp: %d\n", err);
 			goto powergate;
@@ -1234,7 +1238,7 @@ static int tegra_pcie_power_on(struct tegra_pcie *pcie)
 	clk_disable_unprepare(pcie->afi_clk);
 powergate:
 	if (!dev->pm_domain)
-		tegra_powergate_power_off(TEGRA_POWERGATE_PCIE);
+		tegra_pmc_powergate_power_off(pcie->pmc, TEGRA_POWERGATE_PCIE);
 regulator_disable:
 	regulator_bulk_disable(pcie->num_supplies, pcie->supplies);
 
@@ -1432,6 +1436,12 @@ static int tegra_pcie_get_resources(struct tegra_pcie *pcie)
 		return err;
 	}
 
+	pcie->pmc = devm_tegra_pmc_get(dev);
+	if (IS_ERR(pcie->pmc)) {
+		dev_err_probe(dev, PTR_ERR(pcie->pmc), "failed to get PMC\n");
+		return err;
+	}
+
 	if (soc->program_uphy) {
 		err = tegra_pcie_phys_get(pcie);
 		if (err < 0) {

-- 
2.52.0