153 lines
4.0 KiB
C
153 lines
4.0 KiB
C
/*
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* Hisilicon Hi3620 clock gate driver
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*
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* Copyright (c) 2012-2013 Hisilicon Limited.
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* Copyright (c) 2012-2013 Linaro Limited.
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*
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* Author: Haojian Zhuang <haojian.zhuang@linaro.org>
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* Xin Li <li.xin@linaro.org>
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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 as published by
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* the Free Software Foundation; either version 2 of the License, or
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* (at your option) any later version.
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*
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* This program is distributed in the hope that it will be useful,
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* but WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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* GNU General Public License for more details.
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*
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* You should have received a copy of the GNU General Public License along
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* with this program; if not, write to the Free Software Foundation, Inc.,
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* 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA.
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*
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*/
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#ifndef __HISI_CLK_H
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#define __HISI_CLK_H
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#include <linux/clk-provider.h>
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#include <linux/io.h>
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#include <linux/spinlock.h>
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struct platform_device;
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struct hisi_clock_data {
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struct clk_onecell_data clk_data;
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void __iomem *base;
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};
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struct hisi_fixed_rate_clock {
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unsigned int id;
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char *name;
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const char *parent_name;
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unsigned long flags;
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unsigned long fixed_rate;
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};
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struct hisi_fixed_factor_clock {
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unsigned int id;
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char *name;
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const char *parent_name;
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unsigned long mult;
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unsigned long div;
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unsigned long flags;
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};
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struct hisi_mux_clock {
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unsigned int id;
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const char *name;
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const char *const *parent_names;
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u8 num_parents;
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unsigned long flags;
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unsigned long offset;
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u8 shift;
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u8 width;
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u8 mux_flags;
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u32 *table;
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const char *alias;
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};
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struct hisi_divider_clock {
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unsigned int id;
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const char *name;
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const char *parent_name;
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unsigned long flags;
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unsigned long offset;
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u8 shift;
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u8 width;
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u8 div_flags;
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struct clk_div_table *table;
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const char *alias;
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};
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struct hi6220_divider_clock {
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unsigned int id;
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const char *name;
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const char *parent_name;
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unsigned long flags;
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unsigned long offset;
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u8 shift;
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u8 width;
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u32 mask_bit;
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const char *alias;
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};
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struct hisi_gate_clock {
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unsigned int id;
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const char *name;
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const char *parent_name;
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unsigned long flags;
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unsigned long offset;
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u8 bit_idx;
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u8 gate_flags;
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const char *alias;
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};
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struct clk *hisi_register_clkgate_sep(struct device *, const char *,
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const char *, unsigned long,
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void __iomem *, u8,
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u8, spinlock_t *);
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struct clk *hi6220_register_clkdiv(struct device *dev, const char *name,
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const char *parent_name, unsigned long flags, void __iomem *reg,
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u8 shift, u8 width, u32 mask_bit, spinlock_t *lock);
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struct hisi_clock_data *hisi_clk_alloc(struct platform_device *, int);
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struct hisi_clock_data *hisi_clk_init(struct device_node *, int);
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int hisi_clk_register_fixed_rate(const struct hisi_fixed_rate_clock *,
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int, struct hisi_clock_data *);
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int hisi_clk_register_fixed_factor(const struct hisi_fixed_factor_clock *,
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int, struct hisi_clock_data *);
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int hisi_clk_register_mux(const struct hisi_mux_clock *, int,
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struct hisi_clock_data *);
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int hisi_clk_register_divider(const struct hisi_divider_clock *,
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int, struct hisi_clock_data *);
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int hisi_clk_register_gate(const struct hisi_gate_clock *,
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int, struct hisi_clock_data *);
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void hisi_clk_register_gate_sep(const struct hisi_gate_clock *,
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int, struct hisi_clock_data *);
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void hi6220_clk_register_divider(const struct hi6220_divider_clock *,
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int, struct hisi_clock_data *);
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#define hisi_clk_unregister(type) \
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static inline \
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void hisi_clk_unregister_##type(const struct hisi_##type##_clock *clks, \
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int nums, struct hisi_clock_data *data) \
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{ \
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struct clk **clocks = data->clk_data.clks; \
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int i; \
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for (i = 0; i < nums; i++) { \
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int id = clks[i].id; \
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if (clocks[id]) \
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clk_unregister_##type(clocks[id]); \
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} \
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}
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hisi_clk_unregister(fixed_rate)
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hisi_clk_unregister(fixed_factor)
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hisi_clk_unregister(mux)
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hisi_clk_unregister(divider)
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hisi_clk_unregister(gate)
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#endif /* __HISI_CLK_H */
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