76 lines
2.4 KiB
C
76 lines
2.4 KiB
C
/*
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* Copyright (C) 2013 Allwinnertech, kevin.z.m <kevin@allwinnertech.com>
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*
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* This program is free software; you can redistribute it and/or modify
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* it under the terms of the GNU General Public License version 2 as
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* published by the Free Software Foundation.
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*
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* Adjustable factor-based clock implementation
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*/
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#ifndef __MACH_SUNXI_CLK_SUNXI_H
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#define __MACH_SUNXI_CLK_SUNXI_H
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#define to_clk_factor(_hw) container_of(_hw, struct sunxi_clk_factors, hw)
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#define SETMASK(width, shift) ((width?((-1U) >> (32-width)):0) << (shift))
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#define CLRMASK(width, shift) (~(SETMASK(width, shift)))
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#define GET_BITS(shift, width, reg) \
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(((reg) & SETMASK(width, shift)) >> (shift))
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#define SET_BITS(shift, width, reg, val) \
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(((reg) & CLRMASK(width, shift)) | (val << (shift)))
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#define __SUNXI_ALL_CLK_IGNORE_UNUSED__ 1
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struct sunxi_reg_ops {
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u32 (*reg_readl)(void __iomem *reg);
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void (*reg_writel)(u32 val, void __iomem *reg);
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};
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#ifdef CONFIG_PM_SLEEP
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struct sunxi_factor_clk_reg_cache {
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struct list_head node;
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void __iomem *config_reg;
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u32 config_value;
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void __iomem *sdmpat_reg;
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u32 sdmpat_value;
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};
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struct sunxi_periph_clk_reg_cache {
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struct list_head node;
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void __iomem *mux_reg;
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u32 mux_value;
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void __iomem *divider_reg;
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u32 divider_value;
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void __iomem *gate_enable_reg;
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u32 gate_enable_value;
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void __iomem *gate_reset_reg;
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u32 gate_reset_value;
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void __iomem *gate_bus_reg;
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u32 gate_bus_value;
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void __iomem *gate_dram_reg;
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u32 gate_dram_value;
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};
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extern struct list_head clk_periph_reg_cache_list;
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extern struct list_head clk_factor_reg_cache_list;
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void sunxi_factor_clk_save(struct sunxi_factor_clk_reg_cache *factor_clk_reg);
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void sunxi_factor_clk_restore(struct sunxi_factor_clk_reg_cache *factor_clk_reg);
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void sunxi_periph_clk_save(struct sunxi_periph_clk_reg_cache *periph_clk_reg);
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void sunxi_periph_clk_restore(struct sunxi_periph_clk_reg_cache *periph_clk_reg);
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#endif
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extern spinlock_t clk_lock;
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extern void __iomem *sunxi_clk_base;
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extern void __iomem *sunxi_clk_cpus_base;
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extern void __iomem *sunxi_clk_rtc_base;
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void __init sunxi_clocks_init(struct device_node *node);
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void __init sunxi_cpu_clocks_init(struct device_node *node);
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struct factor_init_data *sunxi_clk_get_factor_by_name(const char *name);
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struct periph_init_data *sunxi_clk_get_periph_by_name(const char *name);
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struct periph_init_data *sunxi_clk_get_periph_rtc_by_name(const char *name);
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struct periph_init_data *sunxi_clk_get_periph_cpus_by_name(const char *name);
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#endif
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