From 06fb01373cae0bbf9af3a2b49e29c4341a5ba311 Mon Sep 17 00:00:00 2001 From: Kamil Debski Date: Thu, 6 Mar 2014 12:16:48 +0100 Subject: phy: Add new Exynos USB 2.0 PHY driver Add a new driver for the Exynos USB 2.0 PHY. The new driver uses the generic PHY framework. The driver includes support for the Exynos 4x10 and 4x12 SoC families. Signed-off-by: Kamil Debski Reviewed-by: Tomasz Figa Signed-off-by: Kishon Vijay Abraham I --- drivers/phy/phy-samsung-usb2.h | 66 ++++++++++++++++++++++++++++++++++++++++++ 1 file changed, 66 insertions(+) create mode 100644 drivers/phy/phy-samsung-usb2.h (limited to 'drivers/phy/phy-samsung-usb2.h') diff --git a/drivers/phy/phy-samsung-usb2.h b/drivers/phy/phy-samsung-usb2.h new file mode 100644 index 000000000000..51a16016a214 --- /dev/null +++ b/drivers/phy/phy-samsung-usb2.h @@ -0,0 +1,66 @@ +/* + * Samsung SoC USB 1.1/2.0 PHY driver + * + * Copyright (C) 2013 Samsung Electronics Co., Ltd. + * Author: Kamil Debski + * + * This program is free software; you can redistribute it and/or modify + * it under the terms of the GNU General Public License version 2 as + * published by the Free Software Foundation. + */ + +#ifndef _PHY_EXYNOS_USB2_H +#define _PHY_EXYNOS_USB2_H + +#include +#include +#include +#include +#include + +#define KHZ 1000 +#define MHZ (KHZ * KHZ) + +struct samsung_usb2_phy_driver; +struct samsung_usb2_phy_instance; +struct samsung_usb2_phy_config; + +struct samsung_usb2_phy_instance { + const struct samsung_usb2_common_phy *cfg; + struct phy *phy; + struct samsung_usb2_phy_driver *drv; + bool enabled; +}; + +struct samsung_usb2_phy_driver { + const struct samsung_usb2_phy_config *cfg; + struct clk *clk; + struct clk *ref_clk; + unsigned long ref_rate; + u32 ref_reg_val; + struct device *dev; + void __iomem *reg_phy; + struct regmap *reg_pmu; + struct regmap *reg_sys; + spinlock_t lock; + struct samsung_usb2_phy_instance instances[0]; +}; + +struct samsung_usb2_common_phy { + int (*power_on)(struct samsung_usb2_phy_instance *); + int (*power_off)(struct samsung_usb2_phy_instance *); + unsigned int id; + char *label; +}; + + +struct samsung_usb2_phy_config { + const struct samsung_usb2_common_phy *phys; + int (*rate_to_clk)(unsigned long, u32 *); + unsigned int num_phys; + bool has_mode_switch; +}; + +extern const struct samsung_usb2_phy_config exynos4210_usb2_phy_config; +extern const struct samsung_usb2_phy_config exynos4x12_usb2_phy_config; +#endif -- cgit v1.2.3