linux-imx

/*

 * 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 "ccu_gate.h"

​

void ccu_gate_helper_disable(struct ccu_common *common, u32 gate)

{

    unsigned long flags;

    u32 reg;

​

    if (!gate)

        return;

​

    spin_lock_irqsave(common->lock, flags);

​

    reg = readl(common->base + common->reg);

    writel(reg & ~gate, common->base + common->reg);

​

    spin_unlock_irqrestore(common->lock, flags);

}

​

static void ccu_gate_disable(struct clk_hw *hw)

{

    struct ccu_gate *cg = hw_to_ccu_gate(hw);

​

    return ccu_gate_helper_disable(&cg->common, cg->enable);

}

​

int ccu_gate_helper_enable(struct ccu_common *common, u32 gate)

{

    unsigned long flags;

    u32 reg;

​

    if (!gate)

        return 0;

​

    spin_lock_irqsave(common->lock, flags);

​

    reg = readl(common->base + common->reg);

    writel(reg | gate, common->base + common->reg);

​

    spin_unlock_irqrestore(common->lock, flags);

​

    return 0;

}

​

static int ccu_gate_enable(struct clk_hw *hw)

{

    struct ccu_gate *cg = hw_to_ccu_gate(hw);

​

    return ccu_gate_helper_enable(&cg->common, cg->enable);

}

​

int ccu_gate_helper_is_enabled(struct ccu_common *common, u32 gate)