1 /*
2  * Samsung SoC USB 1.1/2.0 PHY driver
3  *
4  * Copyright (C) 2013 Samsung Electronics Co., Ltd.
5  * Author: Kamil Debski <k.debski@samsung.com>
6  *
7  * This program is free software; you can redistribute it and/or modify
8  * it under the terms of the GNU General Public License version 2 as
9  * published by the Free Software Foundation.
10  */
11 
12 #ifndef _PHY_EXYNOS_USB2_H
13 #define _PHY_EXYNOS_USB2_H
14 
15 #include <linux/clk.h>
16 #include <linux/phy/phy.h>
17 #include <linux/device.h>
18 #include <linux/regmap.h>
19 #include <linux/spinlock.h>
20 #include <linux/regulator/consumer.h>
21 
22 #define KHZ 1000
23 #define MHZ (KHZ * KHZ)
24 
25 struct samsung_usb2_phy_driver;
26 struct samsung_usb2_phy_instance;
27 struct samsung_usb2_phy_config;
28 
29 struct samsung_usb2_phy_instance {
30 	const struct samsung_usb2_common_phy *cfg;
31 	struct phy *phy;
32 	struct samsung_usb2_phy_driver *drv;
33 	int int_cnt;
34 	int ext_cnt;
35 };
36 
37 struct samsung_usb2_phy_driver {
38 	const struct samsung_usb2_phy_config *cfg;
39 	struct clk *clk;
40 	struct clk *ref_clk;
41 	struct regulator *vbus;
42 	unsigned long ref_rate;
43 	u32 ref_reg_val;
44 	struct device *dev;
45 	void __iomem *reg_phy;
46 	struct regmap *reg_pmu;
47 	struct regmap *reg_sys;
48 	spinlock_t lock;
49 	struct samsung_usb2_phy_instance instances[0];
50 };
51 
52 struct samsung_usb2_common_phy {
53 	int (*power_on)(struct samsung_usb2_phy_instance *);
54 	int (*power_off)(struct samsung_usb2_phy_instance *);
55 	unsigned int id;
56 	char *label;
57 };
58 
59 
60 struct samsung_usb2_phy_config {
61 	const struct samsung_usb2_common_phy *phys;
62 	int (*rate_to_clk)(unsigned long, u32 *);
63 	unsigned int num_phys;
64 	bool has_mode_switch;
65 	bool has_refclk_sel;
66 };
67 
68 extern const struct samsung_usb2_phy_config exynos3250_usb2_phy_config;
69 extern const struct samsung_usb2_phy_config exynos4210_usb2_phy_config;
70 extern const struct samsung_usb2_phy_config exynos4x12_usb2_phy_config;
71 extern const struct samsung_usb2_phy_config exynos5250_usb2_phy_config;
72 extern const struct samsung_usb2_phy_config s5pv210_usb2_phy_config;
73 #endif
74