drivers/phy/phy-samsung-usb2.h

   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         bool enabled;
  33 };
  34
  35 struct samsung_usb2_phy_driver {
  36         const struct samsung_usb2_phy_config *cfg;
  37         struct clk *clk;
  38         struct clk *ref_clk;
  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[0];
  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 };
  63
  64 extern const struct samsung_usb2_phy_config exynos4210_usb2_phy_config;
  65 extern const struct samsung_usb2_phy_config exynos4x12_usb2_phy_config;
  66 extern const struct samsung_usb2_phy_config exynos5250_usb2_phy_config;
  67 #endif