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ee9c15ca0f
The round_rate() clk ops is deprecated, so migrate this driver from round_rate() to determine_rate() using the Coccinelle semantic patch on the cover letter of this series. Signed-off-by: Brian Masney <bmasney@redhat.com> Reviewed-by: Maxime Ripard <mripard@kernel.org> Link: https://patch.msgid.link/20250703-clk-cocci-drop-round-rate-v1-7-3a8da898367e@redhat.com Signed-off-by: Chen-Yu Tsai <wens@csie.org>
136 lines
3.1 KiB
C
136 lines
3.1 KiB
C
// SPDX-License-Identifier: GPL-2.0-or-later
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/*
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* Copyright (C) 2016 Maxime Ripard
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* Maxime Ripard <maxime.ripard@free-electrons.com>
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*/
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#include <linux/clk-provider.h>
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#include <linux/io.h>
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#include "ccu_gate.h"
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void ccu_gate_helper_disable(struct ccu_common *common, u32 gate)
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{
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unsigned long flags;
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u32 reg;
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if (!gate)
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return;
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spin_lock_irqsave(common->lock, flags);
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reg = readl(common->base + common->reg);
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if (common->features & CCU_FEATURE_UPDATE_BIT)
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reg |= CCU_SUNXI_UPDATE_BIT;
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writel(reg & ~gate, common->base + common->reg);
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spin_unlock_irqrestore(common->lock, flags);
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}
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EXPORT_SYMBOL_NS_GPL(ccu_gate_helper_disable, "SUNXI_CCU");
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static void ccu_gate_disable(struct clk_hw *hw)
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{
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struct ccu_gate *cg = hw_to_ccu_gate(hw);
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return ccu_gate_helper_disable(&cg->common, cg->enable);
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}
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int ccu_gate_helper_enable(struct ccu_common *common, u32 gate)
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{
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unsigned long flags;
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u32 reg;
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if (!gate)
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return 0;
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spin_lock_irqsave(common->lock, flags);
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reg = readl(common->base + common->reg);
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if (common->features & CCU_FEATURE_UPDATE_BIT)
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reg |= CCU_SUNXI_UPDATE_BIT;
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writel(reg | gate, common->base + common->reg);
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spin_unlock_irqrestore(common->lock, flags);
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return 0;
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}
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EXPORT_SYMBOL_NS_GPL(ccu_gate_helper_enable, "SUNXI_CCU");
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static int ccu_gate_enable(struct clk_hw *hw)
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{
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struct ccu_gate *cg = hw_to_ccu_gate(hw);
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return ccu_gate_helper_enable(&cg->common, cg->enable);
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}
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int ccu_gate_helper_is_enabled(struct ccu_common *common, u32 gate)
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{
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if (!gate)
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return 1;
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return readl(common->base + common->reg) & gate;
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}
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EXPORT_SYMBOL_NS_GPL(ccu_gate_helper_is_enabled, "SUNXI_CCU");
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static int ccu_gate_is_enabled(struct clk_hw *hw)
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{
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struct ccu_gate *cg = hw_to_ccu_gate(hw);
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return ccu_gate_helper_is_enabled(&cg->common, cg->enable);
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}
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static unsigned long ccu_gate_recalc_rate(struct clk_hw *hw,
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unsigned long parent_rate)
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{
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struct ccu_gate *cg = hw_to_ccu_gate(hw);
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unsigned long rate = parent_rate;
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if (cg->common.features & CCU_FEATURE_ALL_PREDIV)
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rate /= cg->common.prediv;
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return rate;
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}
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static int ccu_gate_determine_rate(struct clk_hw *hw,
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struct clk_rate_request *req)
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{
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struct ccu_gate *cg = hw_to_ccu_gate(hw);
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int div = 1;
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if (cg->common.features & CCU_FEATURE_ALL_PREDIV)
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div = cg->common.prediv;
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if (clk_hw_get_flags(hw) & CLK_SET_RATE_PARENT) {
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unsigned long best_parent = req->rate;
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if (cg->common.features & CCU_FEATURE_ALL_PREDIV)
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best_parent *= div;
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req->best_parent_rate = clk_hw_round_rate(clk_hw_get_parent(hw), best_parent);
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}
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req->rate = req->best_parent_rate / div;
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return 0;
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}
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static int ccu_gate_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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* clk_factor_round_rate returns values that ensure this call is a
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* nop.
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*/
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return 0;
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}
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const struct clk_ops ccu_gate_ops = {
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.disable = ccu_gate_disable,
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.enable = ccu_gate_enable,
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.is_enabled = ccu_gate_is_enabled,
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.determine_rate = ccu_gate_determine_rate,
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.set_rate = ccu_gate_set_rate,
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.recalc_rate = ccu_gate_recalc_rate,
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};
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EXPORT_SYMBOL_NS_GPL(ccu_gate_ops, "SUNXI_CCU");
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