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