usb: phy: tegra: don't call into tegra-ehci directly

Both phy-tegra-usb.c and ehci-tegra.c export symbols used by the other one,
which does not work if one of them or both are loadable modules, resulting
in an error like:

drivers/built-in.o: In function `utmi_phy_clk_disable':
drivers/usb/phy/phy-tegra-usb.c:302: undefined reference to `tegra_ehci_set_phcd'
drivers/built-in.o: In function `utmi_phy_clk_enable':
drivers/usb/phy/phy-tegra-usb.c:324: undefined reference to `tegra_ehci_set_phcd'
drivers/built-in.o: In function `utmi_phy_power_on':
drivers/usb/phy/phy-tegra-usb.c:447: undefined reference to `tegra_ehci_set_pts'

This turns the interface into a one-way dependency by letting the tegra ehci
driver pass two function pointers for callbacks that need to be called by
the phy driver.

Signed-off-by: Arnd Bergmann <arnd@arndb.de>
Cc: Venu Byravarasu <vbyravarasu@nvidia.com>
Cc: Alan Stern <stern@rowland.harvard.edu>
Cc: Felipe Balbi <balbi@ti.com>
Cc: Stephen Warren <swarren@nvidia.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>

1 files changed, 5 insertions, 5 deletions

diff --git a/include/linux/usb/tegra_usb_phy.h b/include/linux/usb/tegra_usb_phy.h
index 9ebebe90692..1b7519a8c0b 100644
--- a/include/linux/usb/tegra_usb_phy.h
+++ b/include/linux/usb/tegra_usb_phy.h
@@ -61,10 +61,14 @@ struct tegra_usb_phy {
 	struct device *dev;
 	bool is_legacy_phy;
 	bool is_ulpi_phy;
+	void (*set_pts)(struct usb_phy *x, u8 pts_val);
+	void (*set_phcd)(struct usb_phy *x, bool enable);
 };
 
 struct tegra_usb_phy *tegra_usb_phy_open(struct device *dev, int instance,
-	void __iomem *regs, void *config, enum tegra_usb_phy_mode phy_mode);
+	void __iomem *regs, void *config, enum tegra_usb_phy_mode phy_mode,
+	void (*set_pts)(struct usb_phy *x, u8 pts_val),
+	void (*set_phcd)(struct usb_phy *x, bool enable));
 
 void tegra_usb_phy_preresume(struct usb_phy *phy);
 
@@ -75,8 +79,4 @@ void tegra_ehci_phy_restore_start(struct usb_phy *phy,
 
 void tegra_ehci_phy_restore_end(struct usb_phy *phy);
 
-void tegra_ehci_set_pts(struct usb_phy *x, u8 pts_val);
-
-void tegra_ehci_set_phcd(struct usb_phy *x, bool enable);
-
 #endif /* __TEGRA_USB_PHY_H */