63 lines
1.5 KiB
C
Executable File
63 lines
1.5 KiB
C
Executable File
#include<clk/clk_plat.h>
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#include<clk/clk.h>
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/*
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* DOC: basic fixed-rate clock that cannot gate
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*
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* Traits of this clock:
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* prepare - clk_(un)prepare only ensures parents are prepared
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* enable - clk_enable only ensures parents are enabled
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* rate - rate is always a fixed value. No clk_set_rate support
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* parent - fixed parent. No clk_set_parent support
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*/
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#define to_clk_fixed_rate(_hw) container_of(_hw, struct clk_fixed_rate, hw)
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static unsigned long clk_fixed_rate_recalc_rate(struct clk_hw *hw,
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unsigned long parent_rate)
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{
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return to_clk_fixed_rate(hw)->fixed_rate;
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}
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struct clk_ops clk_fixed_rate_ops = {
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.recalc_rate = clk_fixed_rate_recalc_rate,
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};
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struct clk *clk_register_fixed_rate(void *dev, const char *name,
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const char *parent_name, unsigned long flags,
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unsigned long fixed_rate)
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{
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struct clk_fixed_rate *fixed;
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struct clk *clk;
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struct clk_init_data init;
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/* allocate fixed-rate clock */
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fixed = malloc(sizeof(struct clk_fixed_rate));
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if (fixed)
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memset(fixed,0,sizeof(struct clk_fixed_rate));
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else {
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printf("%s: could not allocate fixed rate clk\n", __func__);
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return NULL;
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}
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init.name = name;
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init.ops = &clk_fixed_rate_ops;
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init.flags = flags | CLK_IS_BASIC;
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init.parent_names = (parent_name ? &parent_name: NULL);
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init.num_parents = (parent_name ? 1 : 0);
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/* struct clk_fixed_rate assignments */
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fixed->fixed_rate = fixed_rate;
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fixed->hw.init = &init;
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/* register the clock */
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clk = clk_register(&fixed->hw);
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if (NULL == clk)
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free(fixed);
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return clk;
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}
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