arm: tegra: usb_phy: add common phy interface

Refactored the phy interface to scale multiple usb
phy hardware versions and for ease of maintenance.

Bug 887361

Change-Id: I08ea9e728f760ca123af7777d3ffabbd71a1aa99
Signed-off-by: Rakesh Bodla <rbodla@nvidia.com>
Reviewed-on: http://git-master/r/103598
Reviewed-by: Automatic_Commit_Validation_User
Reviewed-by: Venkat Moganty <vmoganty@nvidia.com>

1 files changed, 104 insertions, 0 deletions

diff --git a/arch/arm/mach-tegra/tegra_usb_phy.h b/arch/arm/mach-tegra/tegra_usb_phy.h
new file mode 100644
index 000000000000..36b88db94f52
--- /dev/null
+++ b/arch/arm/mach-tegra/tegra_usb_phy.h
@@ -0,0 +1,104 @@
+/*
+ * arch/arm/mach-tegra/include/mach/tegra_usb_phy.h
+ *
+ * Copyright (C) 2011 NVIDIA Corporation.
+ *
+ * This software is licensed under the terms of the GNU General Public
+ * License version 2, as published by the Free Software Foundation, and
+ * may be copied, distributed, and modified under those terms.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+ * GNU General Public License for more details.
+ *
+ */
+
+#ifndef __MACH_TEGRA_USB_PHY_H
+#define __MACH_TEGRA_USB_PHY_H
+
+/**
+ * defines USB port speeds supported in USB2.0
+ */
+enum usb_phy_port_speed {
+	USB_PHY_PORT_SPEED_FULL = 0,
+	USB_PHY_PORT_SPEED_LOW,
+	USB_PHY_PORT_SPEED_HIGH,
+	USB_PHY_PORT_SPEED_UNKNOWN,
+};
+
+/**
+ * defines structure for oscillator dependent parameters
+ */
+struct tegra_xtal_freq {
+	int freq;
+	u8 enable_delay;
+	u8 stable_count;
+	u8 active_delay;
+	u16 xtal_freq_count;
+	u16 debounce;
+	u8 pdtrk_count;
+};
+
+/**
+ * pre decleration of the usb phy data structure
+ */
+struct tegra_usb_phy;
+
+/**
+ * defines function pointers used for differnt phy interfaces
+ */
+struct tegra_usb_phy_ops {
+	int (*open)(struct tegra_usb_phy *phy);
+	void (*close)(struct tegra_usb_phy *phy);
+	int (*irq)(struct tegra_usb_phy *phy);
+	int (*init)(struct tegra_usb_phy *phy);
+	int (*reset)(struct tegra_usb_phy *phy);
+	int (*pre_suspend)(struct tegra_usb_phy *phy);
+	int (*suspend)(struct tegra_usb_phy *phy);
+	int (*post_suspend)(struct tegra_usb_phy *phy);
+	int (*pre_resume)(struct tegra_usb_phy *phy, bool remote_wakeup);
+	int (*resume)(struct tegra_usb_phy *phy);
+	int (*post_resume)(struct tegra_usb_phy *phy);
+	int (*port_power)(struct tegra_usb_phy *phy);
+	int (*bus_reset)(struct tegra_usb_phy *phy);
+	int (*power_off)(struct tegra_usb_phy *phy);
+	int (*power_on)(struct tegra_usb_phy *phy);
+	bool (*charger_detect)(struct tegra_usb_phy *phy);
+};
+
+/**
+ * defines usb phy data structure
+ */
+struct tegra_usb_phy {
+	struct platform_device *pdev;
+	struct tegra_usb_platform_data *pdata;
+	struct clk *pllu_clk;
+	struct clk *ctrlr_clk;
+	struct clk *ulpi_clk;
+	struct clk *utmi_pad_clk;
+	struct clk *emc_clk;
+	struct clk *sys_clk;
+	struct regulator *vdd_reg;
+	struct regulator *vbus_reg;
+	struct tegra_usb_phy_ops *ops;
+	struct tegra_xtal_freq *freq;
+	struct otg_transceiver *ulpi_vp;
+	enum usb_phy_port_speed port_speed;
+	signed char utmi_xcvr_setup;
+	void __iomem *regs;
+	int inst;
+	bool phy_clk_on;
+	bool phy_power_on;
+	bool remote_wakeup;
+	bool hw_accessible;
+};
+
+int usb_phy_reg_status_wait(void __iomem *reg, u32 mask,
+		u32 result, u32 timeout);
+
+int tegra3_usb_phy_init_ops(struct tegra_usb_phy *phy);
+int tegra2_usb_phy_init_ops(struct tegra_usb_phy *phy);
+
+
+#endif /* __MACH_TEGRA_USB_PHY_H */