[PATCH 6/9] usb: xhci: 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/usb/host/xhci-tegra.c | 38 ++++++++++++++++++++++++++------------
 1 file changed, 26 insertions(+), 12 deletions(-)

diff --git a/drivers/usb/host/xhci-tegra.c b/drivers/usb/host/xhci-tegra.c
index d2214d309e96..122b711929ef 100644
--- a/drivers/usb/host/xhci-tegra.c
+++ b/drivers/usb/host/xhci-tegra.c
@@ -292,6 +292,7 @@ struct tegra_xusb {
 	struct reset_control *host_rst;
 	struct reset_control *ss_rst;
 
+	struct tegra_pmc *pmc;
 	struct device *genpd_dev_host;
 	struct device *genpd_dev_ss;
 	bool use_genpd;
@@ -1188,20 +1189,23 @@ static int tegra_xusb_unpowergate_partitions(struct tegra_xusb *tegra)
 			return rc;
 		}
 	} else {
-		rc = tegra_powergate_sequence_power_up(TEGRA_POWERGATE_XUSBA,
-							tegra->ss_clk,
-							tegra->ss_rst);
+		rc = tegra_pmc_powergate_sequence_power_up(tegra->pmc,
+							   TEGRA_POWERGATE_XUSBA,
+							   tegra->ss_clk,
+							   tegra->ss_rst);
 		if (rc < 0) {
 			dev_err(dev, "failed to enable XUSB SS partition\n");
 			return rc;
 		}
 
-		rc = tegra_powergate_sequence_power_up(TEGRA_POWERGATE_XUSBC,
-							tegra->host_clk,
-							tegra->host_rst);
+		rc = tegra_pmc_powergate_sequence_power_up(tegra->pmc,
+							   TEGRA_POWERGATE_XUSBC,
+							   tegra->host_clk,
+							   tegra->host_rst);
 		if (rc < 0) {
 			dev_err(dev, "failed to enable XUSB Host partition\n");
-			tegra_powergate_power_off(TEGRA_POWERGATE_XUSBA);
+			tegra_pmc_powergate_power_off(tegra->pmc,
+						      TEGRA_POWERGATE_XUSBA);
 			return rc;
 		}
 	}
@@ -1228,18 +1232,21 @@ static int tegra_xusb_powergate_partitions(struct tegra_xusb *tegra)
 			return rc;
 		}
 	} else {
-		rc = tegra_powergate_power_off(TEGRA_POWERGATE_XUSBC);
+		rc = tegra_pmc_powergate_power_off(tegra->pmc,
+						   TEGRA_POWERGATE_XUSBC);
 		if (rc < 0) {
 			dev_err(dev, "failed to disable XUSB Host partition\n");
 			return rc;
 		}
 
-		rc = tegra_powergate_power_off(TEGRA_POWERGATE_XUSBA);
+		rc = tegra_pmc_powergate_power_off(tegra->pmc,
+						   TEGRA_POWERGATE_XUSBA);
 		if (rc < 0) {
 			dev_err(dev, "failed to disable XUSB SS partition\n");
-			tegra_powergate_sequence_power_up(TEGRA_POWERGATE_XUSBC,
-							  tegra->host_clk,
-							  tegra->host_rst);
+			tegra_pmc_powergate_sequence_power_up(tegra->pmc,
+							      TEGRA_POWERGATE_XUSBC,
+							      tegra->host_clk,
+							      tegra->host_rst);
 			return rc;
 		}
 	}
@@ -1733,6 +1740,13 @@ static int tegra_xusb_probe(struct platform_device *pdev)
 				err);
 			goto put_padctl;
 		}
+
+		tegra->pmc = devm_tegra_pmc_get(&pdev->dev);
+		if (IS_ERR(tegra->pmc)) {
+			err = dev_err_probe(&pdev->dev, PTR_ERR(tegra->pmc),
+					    "failed to get PMC\n");
+			goto put_padctl;
+		}
 	} else {
 		err = tegra_xusb_powerdomain_init(&pdev->dev, tegra);
 		if (err)

-- 
2.52.0