diff options
Diffstat (limited to 'drivers/clk/qcom/gdsc.h')
| -rw-r--r-- | drivers/clk/qcom/gdsc.h | 85 |
1 files changed, 85 insertions, 0 deletions
diff --git a/drivers/clk/qcom/gdsc.h b/drivers/clk/qcom/gdsc.h new file mode 100644 index 000000000..bd1f2c780 --- /dev/null +++ b/drivers/clk/qcom/gdsc.h @@ -0,0 +1,85 @@ +/* + * Copyright (c) 2015, 2017-2018, 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 <linux/err.h> +#include <linux/pm_domain.h> + +struct regmap; +struct reset_controller_dev; + +/** + * struct gdsc - Globally Distributed Switch Controller + * @pd: generic power domain + * @regmap: regmap for MMIO accesses + * @gdscr: gsdc control register + * @gds_hw_ctrl: gds_hw_ctrl register + * @cxcs: offsets of branch registers to toggle mem/periph bits in + * @cxc_count: number of @cxcs + * @pwrsts: Possible powerdomain power states + * @resets: ids of resets associated with this gdsc + * @reset_count: number of @resets + * @rcdev: reset controller + */ +struct gdsc { + struct generic_pm_domain pd; + struct generic_pm_domain *parent; + struct regmap *regmap; + unsigned int gdscr; + unsigned int gds_hw_ctrl; + unsigned int clamp_io_ctrl; + unsigned int *cxcs; + unsigned int cxc_count; + const u8 pwrsts; +/* Powerdomain allowable state bitfields */ +#define PWRSTS_OFF BIT(0) +#define PWRSTS_RET BIT(1) +#define PWRSTS_ON BIT(2) +#define PWRSTS_OFF_ON (PWRSTS_OFF | PWRSTS_ON) +#define PWRSTS_RET_ON (PWRSTS_RET | PWRSTS_ON) + const u8 flags; +#define VOTABLE BIT(0) +#define CLAMP_IO BIT(1) +#define HW_CTRL BIT(2) +#define SW_RESET BIT(3) +#define AON_RESET BIT(4) +#define POLL_CFG_GDSCR BIT(5) +#define ALWAYS_ON BIT(6) + struct reset_controller_dev *rcdev; + unsigned int *resets; + unsigned int reset_count; +}; + +struct gdsc_desc { + struct device *dev; + struct gdsc **scs; + size_t num; +}; + +#ifdef CONFIG_QCOM_GDSC +int gdsc_register(struct gdsc_desc *desc, struct reset_controller_dev *, + struct regmap *); +void gdsc_unregister(struct gdsc_desc *desc); +#else +static inline int gdsc_register(struct gdsc_desc *desc, + struct reset_controller_dev *rcdev, + struct regmap *r) +{ + return -ENOSYS; +} + +static inline void gdsc_unregister(struct gdsc_desc *desc) {}; +#endif /* CONFIG_QCOM_GDSC */ +#endif /* __QCOM_GDSC_H__ */ |