diff options
Diffstat (limited to 'drivers/clk/sunxi-ng/ccu_gate.c')
| -rw-r--r-- | drivers/clk/sunxi-ng/ccu_gate.c | 29 |
1 files changed, 18 insertions, 11 deletions
diff --git a/drivers/clk/sunxi-ng/ccu_gate.c b/drivers/clk/sunxi-ng/ccu_gate.c index cd069d5da215..30673fe4e3c2 100644 --- a/drivers/clk/sunxi-ng/ccu_gate.c +++ b/drivers/clk/sunxi-ng/ccu_gate.c @@ -1,14 +1,11 @@ +// SPDX-License-Identifier: GPL-2.0-or-later /* * Copyright (C) 2016 Maxime Ripard * Maxime Ripard <maxime.ripard@free-electrons.com> - * - * This program is free software; you can redistribute it and/or - * modify it under the terms of the GNU General Public License as - * published by the Free Software Foundation; either version 2 of - * the License, or (at your option) any later version. */ #include <linux/clk-provider.h> +#include <linux/io.h> #include "ccu_gate.h" @@ -23,10 +20,13 @@ void ccu_gate_helper_disable(struct ccu_common *common, u32 gate) spin_lock_irqsave(common->lock, flags); reg = readl(common->base + common->reg); + if (common->features & CCU_FEATURE_UPDATE_BIT) + reg |= CCU_SUNXI_UPDATE_BIT; writel(reg & ~gate, common->base + common->reg); spin_unlock_irqrestore(common->lock, flags); } +EXPORT_SYMBOL_NS_GPL(ccu_gate_helper_disable, "SUNXI_CCU"); static void ccu_gate_disable(struct clk_hw *hw) { @@ -46,12 +46,15 @@ int ccu_gate_helper_enable(struct ccu_common *common, u32 gate) spin_lock_irqsave(common->lock, flags); reg = readl(common->base + common->reg); + if (common->features & CCU_FEATURE_UPDATE_BIT) + reg |= CCU_SUNXI_UPDATE_BIT; writel(reg | gate, common->base + common->reg); spin_unlock_irqrestore(common->lock, flags); return 0; } +EXPORT_SYMBOL_NS_GPL(ccu_gate_helper_enable, "SUNXI_CCU"); static int ccu_gate_enable(struct clk_hw *hw) { @@ -67,6 +70,7 @@ int ccu_gate_helper_is_enabled(struct ccu_common *common, u32 gate) return readl(common->base + common->reg) & gate; } +EXPORT_SYMBOL_NS_GPL(ccu_gate_helper_is_enabled, "SUNXI_CCU"); static int ccu_gate_is_enabled(struct clk_hw *hw) { @@ -87,8 +91,8 @@ static unsigned long ccu_gate_recalc_rate(struct clk_hw *hw, return rate; } -static long ccu_gate_round_rate(struct clk_hw *hw, unsigned long rate, - unsigned long *prate) +static int ccu_gate_determine_rate(struct clk_hw *hw, + struct clk_rate_request *req) { struct ccu_gate *cg = hw_to_ccu_gate(hw); int div = 1; @@ -97,14 +101,16 @@ static long ccu_gate_round_rate(struct clk_hw *hw, unsigned long rate, div = cg->common.prediv; if (clk_hw_get_flags(hw) & CLK_SET_RATE_PARENT) { - unsigned long best_parent = rate; + unsigned long best_parent = req->rate; if (cg->common.features & CCU_FEATURE_ALL_PREDIV) best_parent *= div; - *prate = clk_hw_round_rate(clk_hw_get_parent(hw), best_parent); + req->best_parent_rate = clk_hw_round_rate(clk_hw_get_parent(hw), best_parent); } - return *prate / div; + req->rate = req->best_parent_rate / div; + + return 0; } static int ccu_gate_set_rate(struct clk_hw *hw, unsigned long rate, @@ -123,7 +129,8 @@ const struct clk_ops ccu_gate_ops = { .disable = ccu_gate_disable, .enable = ccu_gate_enable, .is_enabled = ccu_gate_is_enabled, - .round_rate = ccu_gate_round_rate, + .determine_rate = ccu_gate_determine_rate, .set_rate = ccu_gate_set_rate, .recalc_rate = ccu_gate_recalc_rate, }; +EXPORT_SYMBOL_NS_GPL(ccu_gate_ops, "SUNXI_CCU"); |