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87e392164a
Refactor mvebu_clk_gating_setup() to use a common spinlock instead of a unique lock for every instance of a struct clk_gating_ctrl object. This will be used later for a separate mux clock type that shares a register with gate clock types and needs to use the same lock to protect access to the register. Cc: Andrew Lunn <andrew@lunn.ch> Tested-by: Andrew Lunn <andrew@lunn.ch> Signed-off-by: Mike Turquette <mturquette@linaro.org>
51 lines
1.2 KiB
C
51 lines
1.2 KiB
C
/*
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* Marvell EBU SoC common clock handling
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*
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* Copyright (C) 2012 Marvell
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*
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* Gregory CLEMENT <gregory.clement@free-electrons.com>
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* Sebastian Hesselbarth <sebastian.hesselbarth@gmail.com>
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* Andrew Lunn <andrew@lunn.ch>
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*
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* This file is licensed under the terms of the GNU General Public
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* License version 2. This program is licensed "as is" without any
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* warranty of any kind, whether express or implied.
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*/
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#ifndef __CLK_MVEBU_COMMON_H_
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#define __CLK_MVEBU_COMMON_H_
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#include <linux/kernel.h>
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extern spinlock_t ctrl_gating_lock;
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struct device_node;
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struct coreclk_ratio {
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int id;
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const char *name;
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};
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struct coreclk_soc_desc {
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u32 (*get_tclk_freq)(void __iomem *sar);
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u32 (*get_cpu_freq)(void __iomem *sar);
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void (*get_clk_ratio)(void __iomem *sar, int id, int *mult, int *div);
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const struct coreclk_ratio *ratios;
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int num_ratios;
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};
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struct clk_gating_soc_desc {
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const char *name;
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const char *parent;
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int bit_idx;
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unsigned long flags;
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};
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void __init mvebu_coreclk_setup(struct device_node *np,
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const struct coreclk_soc_desc *desc);
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void __init mvebu_clk_gating_setup(struct device_node *np,
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const struct clk_gating_soc_desc *desc);
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#endif
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