drivers/phy/samsung/phy-samsung-usb2.h

   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 exynos5420_usb2_phy_config;
  70 extern const struct samsung_usb2_phy_config s5pv210_usb2_phy_config;
  71 #endif