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 
21 #define KHZ 1000
22 #define MHZ (KHZ * KHZ)
23 
24 struct samsung_usb2_phy_driver;
25 struct samsung_usb2_phy_instance;
26 struct samsung_usb2_phy_config;
27 
28 struct samsung_usb2_phy_instance {
29 	const struct samsung_usb2_common_phy *cfg;
30 	struct phy *phy;
31 	struct samsung_usb2_phy_driver *drv;
32 	int int_cnt;
33 	int ext_cnt;
34 };
35 
36 struct samsung_usb2_phy_driver {
37 	const struct samsung_usb2_phy_config *cfg;
38 	struct clk *clk;
39 	struct clk *ref_clk;
40 	unsigned long ref_rate;
41 	u32 ref_reg_val;
42 	struct device *dev;
43 	void __iomem *reg_phy;
44 	struct regmap *reg_pmu;
45 	struct regmap *reg_sys;
46 	spinlock_t lock;
47 	struct samsung_usb2_phy_instance instances[0];
48 };
49 
50 struct samsung_usb2_common_phy {
51 	int (*power_on)(struct samsung_usb2_phy_instance *);
52 	int (*power_off)(struct samsung_usb2_phy_instance *);
53 	unsigned int id;
54 	char *label;
55 };
56 
57 
58 struct samsung_usb2_phy_config {
59 	const struct samsung_usb2_common_phy *phys;
60 	int (*rate_to_clk)(unsigned long, u32 *);
61 	unsigned int num_phys;
62 	bool has_mode_switch;
63 	bool has_refclk_sel;
64 };
65 
66 extern const struct samsung_usb2_phy_config exynos3250_usb2_phy_config;
67 extern const struct samsung_usb2_phy_config exynos4210_usb2_phy_config;
68 extern const struct samsung_usb2_phy_config exynos4x12_usb2_phy_config;
69 extern const struct samsung_usb2_phy_config exynos5250_usb2_phy_config;
70 extern const struct samsung_usb2_phy_config s5pv210_usb2_phy_config;
71 #endif
72