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clk: actions: Add composite clock support
Add support for Actions Semi composite clock. This clock consists of gate, mux, divider, factor and fixed factor clocks. Signed-off-by: Manivannan Sadhasivam <manivannan.sadhasivam@linaro.org> Signed-off-by: Stephen Boyd <sboyd@kernel.org>
This commit is contained in:
Manivannan Sadhasivam
Stephen Boyd
parent
c535196446
commit
bb150645ab
@ -5,3 +5,4 @@ clk-owl-y += owl-gate.o
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clk-owl-y += owl-mux.o
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clk-owl-y += owl-divider.o
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clk-owl-y += owl-factor.o
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clk-owl-y += owl-composite.o
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199
drivers/clk/actions/owl-composite.c
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199
drivers/clk/actions/owl-composite.c
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@ -0,0 +1,199 @@
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// SPDX-License-Identifier: GPL-2.0+
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//
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// OWL composite clock driver
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//
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// Copyright (c) 2014 Actions Semi Inc.
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// Author: David Liu <liuwei@actions-semi.com>
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//
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// Copyright (c) 2018 Linaro Ltd.
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// Author: Manivannan Sadhasivam <manivannan.sadhasivam@linaro.org>
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#include <linux/clk-provider.h>
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#include <linux/regmap.h>
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#include "owl-composite.h"
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static u8 owl_comp_get_parent(struct clk_hw *hw)
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{
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struct owl_composite *comp = hw_to_owl_comp(hw);
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return owl_mux_helper_get_parent(&comp->common, &comp->mux_hw);
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}
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static int owl_comp_set_parent(struct clk_hw *hw, u8 index)
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{
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struct owl_composite *comp = hw_to_owl_comp(hw);
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return owl_mux_helper_set_parent(&comp->common, &comp->mux_hw, index);
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}
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static void owl_comp_disable(struct clk_hw *hw)
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{
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struct owl_composite *comp = hw_to_owl_comp(hw);
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struct owl_clk_common *common = &comp->common;
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owl_gate_set(common, &comp->gate_hw, false);
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}
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static int owl_comp_enable(struct clk_hw *hw)
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{
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struct owl_composite *comp = hw_to_owl_comp(hw);
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struct owl_clk_common *common = &comp->common;
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owl_gate_set(common, &comp->gate_hw, true);
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return 0;
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}
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static int owl_comp_is_enabled(struct clk_hw *hw)
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{
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struct owl_composite *comp = hw_to_owl_comp(hw);
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struct owl_clk_common *common = &comp->common;
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return owl_gate_clk_is_enabled(common, &comp->gate_hw);
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}
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static long owl_comp_div_round_rate(struct clk_hw *hw, unsigned long rate,
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unsigned long *parent_rate)
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{
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struct owl_composite *comp = hw_to_owl_comp(hw);
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return owl_divider_helper_round_rate(&comp->common, &comp->rate.div_hw,
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rate, parent_rate);
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}
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static unsigned long owl_comp_div_recalc_rate(struct clk_hw *hw,
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unsigned long parent_rate)
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{
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struct owl_composite *comp = hw_to_owl_comp(hw);
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return owl_divider_helper_recalc_rate(&comp->common, &comp->rate.div_hw,
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parent_rate);
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}
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static int owl_comp_div_set_rate(struct clk_hw *hw, unsigned long rate,
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unsigned long parent_rate)
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{
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struct owl_composite *comp = hw_to_owl_comp(hw);
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return owl_divider_helper_set_rate(&comp->common, &comp->rate.div_hw,
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rate, parent_rate);
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}
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static long owl_comp_fact_round_rate(struct clk_hw *hw, unsigned long rate,
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unsigned long *parent_rate)
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{
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struct owl_composite *comp = hw_to_owl_comp(hw);
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return owl_factor_helper_round_rate(&comp->common,
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&comp->rate.factor_hw,
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rate, parent_rate);
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}
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static unsigned long owl_comp_fact_recalc_rate(struct clk_hw *hw,
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unsigned long parent_rate)
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{
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struct owl_composite *comp = hw_to_owl_comp(hw);
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return owl_factor_helper_recalc_rate(&comp->common,
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&comp->rate.factor_hw,
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parent_rate);
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}
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static int owl_comp_fact_set_rate(struct clk_hw *hw, unsigned long rate,
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unsigned long parent_rate)
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{
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struct owl_composite *comp = hw_to_owl_comp(hw);
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return owl_factor_helper_set_rate(&comp->common,
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&comp->rate.factor_hw,
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rate, parent_rate);
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}
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static long owl_comp_fix_fact_round_rate(struct clk_hw *hw, unsigned long rate,
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unsigned long *parent_rate)
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{
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struct owl_composite *comp = hw_to_owl_comp(hw);
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struct clk_fixed_factor *fix_fact_hw = &comp->rate.fix_fact_hw;
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return comp->fix_fact_ops->round_rate(&fix_fact_hw->hw, rate, parent_rate);
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}
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static unsigned long owl_comp_fix_fact_recalc_rate(struct clk_hw *hw,
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unsigned long parent_rate)
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{
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struct owl_composite *comp = hw_to_owl_comp(hw);
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struct clk_fixed_factor *fix_fact_hw = &comp->rate.fix_fact_hw;
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return comp->fix_fact_ops->recalc_rate(&fix_fact_hw->hw, parent_rate);
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}
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static int owl_comp_fix_fact_set_rate(struct clk_hw *hw, unsigned long rate,
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unsigned long parent_rate)
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{
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/*
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* We must report success but we can do so unconditionally because
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* owl_comp_fix_fact_round_rate returns values that ensure this call is
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* a nop.
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*/
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return 0;
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}
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const struct clk_ops owl_comp_div_ops = {
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/* mux_ops */
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.get_parent = owl_comp_get_parent,
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.set_parent = owl_comp_set_parent,
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/* gate_ops */
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.disable = owl_comp_disable,
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.enable = owl_comp_enable,
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.is_enabled = owl_comp_is_enabled,
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/* div_ops */
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.round_rate = owl_comp_div_round_rate,
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.recalc_rate = owl_comp_div_recalc_rate,
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.set_rate = owl_comp_div_set_rate,
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};
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const struct clk_ops owl_comp_fact_ops = {
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/* mux_ops */
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.get_parent = owl_comp_get_parent,
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.set_parent = owl_comp_set_parent,
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/* gate_ops */
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.disable = owl_comp_disable,
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.enable = owl_comp_enable,
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.is_enabled = owl_comp_is_enabled,
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/* fact_ops */
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.round_rate = owl_comp_fact_round_rate,
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.recalc_rate = owl_comp_fact_recalc_rate,
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.set_rate = owl_comp_fact_set_rate,
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};
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const struct clk_ops owl_comp_fix_fact_ops = {
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/* gate_ops */
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.disable = owl_comp_disable,
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.enable = owl_comp_enable,
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.is_enabled = owl_comp_is_enabled,
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/* fix_fact_ops */
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.round_rate = owl_comp_fix_fact_round_rate,
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.recalc_rate = owl_comp_fix_fact_recalc_rate,
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.set_rate = owl_comp_fix_fact_set_rate,
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};
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const struct clk_ops owl_comp_pass_ops = {
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/* mux_ops */
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.get_parent = owl_comp_get_parent,
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.set_parent = owl_comp_set_parent,
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/* gate_ops */
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.disable = owl_comp_disable,
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.enable = owl_comp_enable,
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.is_enabled = owl_comp_is_enabled,
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};
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124
drivers/clk/actions/owl-composite.h
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124
drivers/clk/actions/owl-composite.h
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@ -0,0 +1,124 @@
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// SPDX-License-Identifier: GPL-2.0+
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//
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// OWL composite clock driver
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//
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// Copyright (c) 2014 Actions Semi Inc.
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// Author: David Liu <liuwei@actions-semi.com>
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//
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// Copyright (c) 2018 Linaro Ltd.
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// Author: Manivannan Sadhasivam <manivannan.sadhasivam@linaro.org>
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#ifndef _OWL_COMPOSITE_H_
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#define _OWL_COMPOSITE_H_
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#include "owl-common.h"
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#include "owl-mux.h"
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#include "owl-gate.h"
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#include "owl-factor.h"
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#include "owl-fixed-factor.h"
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#include "owl-divider.h"
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union owl_rate {
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struct owl_divider_hw div_hw;
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struct owl_factor_hw factor_hw;
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struct clk_fixed_factor fix_fact_hw;
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};
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struct owl_composite {
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struct owl_mux_hw mux_hw;
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struct owl_gate_hw gate_hw;
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union owl_rate rate;
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const struct clk_ops *fix_fact_ops;
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struct owl_clk_common common;
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};
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#define OWL_COMP_DIV(_struct, _name, _parent, \
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_mux, _gate, _div, _flags) \
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struct owl_composite _struct = { \
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.mux_hw = _mux, \
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.gate_hw = _gate, \
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.rate.div_hw = _div, \
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.common = { \
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.regmap = NULL, \
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.hw.init = CLK_HW_INIT_PARENTS(_name, \
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_parent, \
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&owl_comp_div_ops,\
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_flags), \
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}, \
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}
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#define OWL_COMP_DIV_FIXED(_struct, _name, _parent, \
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_gate, _div, _flags) \
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struct owl_composite _struct = { \
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.gate_hw = _gate, \
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.rate.div_hw = _div, \
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.common = { \
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.regmap = NULL, \
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.hw.init = CLK_HW_INIT(_name, \
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_parent, \
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&owl_comp_div_ops,\
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_flags), \
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}, \
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}
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#define OWL_COMP_FACTOR(_struct, _name, _parent, \
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_mux, _gate, _factor, _flags) \
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struct owl_composite _struct = { \
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.mux_hw = _mux, \
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.gate_hw = _gate, \
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.rate.factor_hw = _factor, \
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.common = { \
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.regmap = NULL, \
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.hw.init = CLK_HW_INIT_PARENTS(_name, \
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_parent, \
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&owl_comp_fact_ops,\
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_flags), \
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}, \
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}
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#define OWL_COMP_FIXED_FACTOR(_struct, _name, _parent, \
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_gate, _mul, _div, _flags) \
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struct owl_composite _struct = { \
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.gate_hw = _gate, \
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.rate.fix_fact_hw.mult = _mul, \
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.rate.fix_fact_hw.div = _div, \
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.fix_fact_ops = &clk_fixed_factor_ops, \
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.common = { \
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.regmap = NULL, \
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.hw.init = CLK_HW_INIT(_name, \
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_parent, \
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&owl_comp_fix_fact_ops,\
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_flags), \
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}, \
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}
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#define OWL_COMP_PASS(_struct, _name, _parent, \
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_mux, _gate, _flags) \
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struct owl_composite _struct = { \
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.mux_hw = _mux, \
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.gate_hw = _gate, \
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.common = { \
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.regmap = NULL, \
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.hw.init = CLK_HW_INIT_PARENTS(_name, \
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_parent, \
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&owl_comp_pass_ops,\
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_flags), \
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}, \
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}
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static inline struct owl_composite *hw_to_owl_comp(const struct clk_hw *hw)
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{
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struct owl_clk_common *common = hw_to_owl_clk_common(hw);
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return container_of(common, struct owl_composite, common);
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}
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extern const struct clk_ops owl_comp_div_ops;
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extern const struct clk_ops owl_comp_fact_ops;
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extern const struct clk_ops owl_comp_fix_fact_ops;
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extern const struct clk_ops owl_comp_pass_ops;
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extern const struct clk_ops clk_fixed_factor_ops;
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#endif /* _OWL_COMPOSITE_H_ */
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