From 45dd0e55317ccb27fe8eae639275c2b3a2fb52e5 Mon Sep 17 00:00:00 2001 From: Stephen Boyd Date: Thu, 6 Aug 2015 16:07:42 +0530 Subject: clk: qcom: Add support for GDSCs GDSCs (Global Distributed Switch Controllers) are responsible for safely collapsing and restoring power to peripherals in the SoC. These are best modelled as power domains using genpd and given the registers are scattered throughout the clock controller register space, its best to have the support added through the clock driver. Signed-off-by: Stephen Boyd Signed-off-by: Rajendra Nayak Signed-off-by: Stephen Boyd --- drivers/clk/qcom/gdsc.h | 46 ++++++++++++++++++++++++++++++++++++++++++++++ 1 file changed, 46 insertions(+) create mode 100644 drivers/clk/qcom/gdsc.h (limited to 'drivers/clk/qcom/gdsc.h') diff --git a/drivers/clk/qcom/gdsc.h b/drivers/clk/qcom/gdsc.h new file mode 100644 index 000000000000..f578a0cce425 --- /dev/null +++ b/drivers/clk/qcom/gdsc.h @@ -0,0 +1,46 @@ +/* + * Copyright (c) 2015, The Linux Foundation. All rights reserved. + * + * This program is free software; you can redistribute it and/or modify + * it under the terms of the GNU General Public License version 2 and + * only version 2 as published by the Free Software Foundation. + * + * This program is distributed in the hope that it will be useful, + * but WITHOUT ANY WARRANTY; without even the implied warranty of + * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the + * GNU General Public License for more details. + */ + +#ifndef __QCOM_GDSC_H__ +#define __QCOM_GDSC_H__ + +#include +#include + +struct regmap; + +/** + * struct gdsc - Globally Distributed Switch Controller + * @pd: generic power domain + * @regmap: regmap for MMIO accesses + * @gdscr: gsdc control register + */ +struct gdsc { + struct generic_pm_domain pd; + struct regmap *regmap; + unsigned int gdscr; +}; + +#ifdef CONFIG_QCOM_GDSC +int gdsc_register(struct device *, struct gdsc **, size_t n, struct regmap *); +void gdsc_unregister(struct device *); +#else +static inline int gdsc_register(struct device *d, struct gdsc **g, size_t n, + struct regmap *r) +{ + return -ENOSYS; +} + +static inline void gdsc_unregister(struct device *d) {}; +#endif /* CONFIG_QCOM_GDSC */ +#endif /* __QCOM_GDSC_H__ */ -- cgit v1.2.3