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// SPDX-License-Identifier: GPL-2.0+
//
// OWL composite clock driver
//
// Copyright (c) 2014 Actions Semi Inc.
// Author: David Liu <liuwei@actions-semi.com>
//
// Copyright (c) 2018 Linaro Ltd.
// Author: Manivannan Sadhasivam <manivannan.sadhasivam@linaro.org>
#include <linux/clk-provider.h>
#include <linux/regmap.h>
#include "owl-composite.h"
static u8 owl_comp_get_parent(struct clk_hw *hw)
{
struct owl_composite *comp = hw_to_owl_comp(hw);
return owl_mux_helper_get_parent(&comp->common, &comp->mux_hw);
}
static int owl_comp_set_parent(struct clk_hw *hw, u8 index)
{
struct owl_composite *comp = hw_to_owl_comp(hw);
return owl_mux_helper_set_parent(&comp->common, &comp->mux_hw, index);
}
static void owl_comp_disable(struct clk_hw *hw)
{
struct owl_composite *comp = hw_to_owl_comp(hw);
struct owl_clk_common *common = &comp->common;
owl_gate_set(common, &comp->gate_hw, false);
}
static int owl_comp_enable(struct clk_hw *hw)
{
struct owl_composite *comp = hw_to_owl_comp(hw);
struct owl_clk_common *common = &comp->common;
owl_gate_set(common, &comp->gate_hw, true);
return 0;
}
static int owl_comp_is_enabled(struct clk_hw *hw)
{
struct owl_composite *comp = hw_to_owl_comp(hw);
struct owl_clk_common *common = &comp->common;
return owl_gate_clk_is_enabled(common, &comp->gate_hw);
}
static int owl_comp_div_determine_rate(struct clk_hw *hw,
struct clk_rate_request *req)
{
struct owl_composite *comp = hw_to_owl_comp(hw);
long rate;
rate = owl_divider_helper_round_rate(&comp->common, &comp->rate.div_hw,
req->rate, &req->best_parent_rate);
if (rate < 0)
return rate;
req->rate = rate;
return 0;
}
static unsigned long owl_comp_div_recalc_rate(struct clk_hw *hw,
unsigned long parent_rate)
{
struct owl_composite *comp = hw_to_owl_comp(hw);
return owl_divider_helper_recalc_rate(&comp->common, &comp->rate.div_hw,
parent_rate);
}
static int owl_comp_div_set_rate(struct clk_hw *hw, unsigned long rate,
unsigned long parent_rate)
{
struct owl_composite *comp = hw_to_owl_comp(hw);
return owl_divider_helper_set_rate(&comp->common, &comp->rate.div_hw,
rate, parent_rate);
}
static int owl_comp_fact_determine_rate(struct clk_hw *hw,
struct clk_rate_request *req)
{
struct owl_composite *comp = hw_to_owl_comp(hw);
long rate;
rate = owl_factor_helper_round_rate(&comp->common,
&comp->rate.factor_hw,
req->rate, &req->best_parent_rate);
if (rate < 0)
return rate;
req->rate = rate;
return 0;
}
static unsigned long owl_comp_fact_recalc_rate(struct clk_hw *hw,
unsigned long parent_rate)
{
struct owl_composite *comp = hw_to_owl_comp(hw);
return owl_factor_helper_recalc_rate(&comp->common,
&comp->rate.factor_hw,
parent_rate);
}
static int owl_comp_fact_set_rate(struct clk_hw *hw, unsigned long rate,
unsigned long parent_rate)
{
struct owl_composite *comp = hw_to_owl_comp(hw);
return owl_factor_helper_set_rate(&comp->common,
&comp->rate.factor_hw,
rate, parent_rate);
}
static long owl_comp_fix_fact_round_rate(struct clk_hw *hw, unsigned long rate,
unsigned long *parent_rate)
{
struct owl_composite *comp = hw_to_owl_comp(hw);
struct clk_fixed_factor *fix_fact_hw = &comp->rate.fix_fact_hw;
return comp->fix_fact_ops->round_rate(&fix_fact_hw->hw, rate, parent_rate);
}
static unsigned long owl_comp_fix_fact_recalc_rate(struct clk_hw *hw,
unsigned long parent_rate)
{
struct owl_composite *comp = hw_to_owl_comp(hw);
struct clk_fixed_factor *fix_fact_hw = &comp->rate.fix_fact_hw;
return comp->fix_fact_ops->recalc_rate(&fix_fact_hw->hw, parent_rate);
}
static int owl_comp_fix_fact_set_rate(struct clk_hw *hw, unsigned long rate,
unsigned long parent_rate)
{
/*
* We must report success but we can do so unconditionally because
* owl_comp_fix_fact_round_rate returns values that ensure this call is
* a nop.
*/
return 0;
}
const struct clk_ops owl_comp_div_ops = {
/* mux_ops */
.get_parent = owl_comp_get_parent,
.set_parent = owl_comp_set_parent,
/* gate_ops */
.disable = owl_comp_disable,
.enable = owl_comp_enable,
.is_enabled = owl_comp_is_enabled,
/* div_ops */
.determine_rate = owl_comp_div_determine_rate,
.recalc_rate = owl_comp_div_recalc_rate,
.set_rate = owl_comp_div_set_rate,
};
const struct clk_ops owl_comp_fact_ops = {
/* mux_ops */
.get_parent = owl_comp_get_parent,
.set_parent = owl_comp_set_parent,
/* gate_ops */
.disable = owl_comp_disable,
.enable = owl_comp_enable,
.is_enabled = owl_comp_is_enabled,
/* fact_ops */
.determine_rate = owl_comp_fact_determine_rate,
.recalc_rate = owl_comp_fact_recalc_rate,
.set_rate = owl_comp_fact_set_rate,
};
const struct clk_ops owl_comp_fix_fact_ops = {
/* gate_ops */
.disable = owl_comp_disable,
.enable = owl_comp_enable,
.is_enabled = owl_comp_is_enabled,
/* fix_fact_ops */
.round_rate = owl_comp_fix_fact_round_rate,
.recalc_rate = owl_comp_fix_fact_recalc_rate,
.set_rate = owl_comp_fix_fact_set_rate,
};
const struct clk_ops owl_comp_pass_ops = {
/* mux_ops */
.determine_rate = clk_hw_determine_rate_no_reparent,
.get_parent = owl_comp_get_parent,
.set_parent = owl_comp_set_parent,
/* gate_ops */
.disable = owl_comp_disable,
.enable = owl_comp_enable,
.is_enabled = owl_comp_is_enabled,
};
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