linux-imx

/*

 * clk-flexgen.c

 *

 * Copyright (C) ST-Microelectronics SA 2013

 * Author:  Maxime Coquelin <maxime.coquelin@st.com> for ST-Microelectronics.

 * License terms:  GNU General Public License (GPL), version 2  */

​

#include <linux/clk.h>

#include <linux/clk-provider.h>

#include <linux/module.h>

#include <linux/slab.h>

#include <linux/io.h>

#include <linux/err.h>

#include <linux/string.h>

#include <linux/of.h>

#include <linux/of_address.h>

​

struct clkgen_data {

    unsigned long flags;

    bool mode;

};

​

struct flexgen {

    struct clk_hw hw;

​

    /* Crossbar */

    struct clk_mux mux;

    /* Pre-divisor's gate */

    struct clk_gate pgate;

    /* Pre-divisor */

    struct clk_divider pdiv;

    /* Final divisor's gate */

    struct clk_gate fgate;

    /* Final divisor */

    struct clk_divider fdiv;

    /* Asynchronous mode control */

    struct clk_gate sync;

    /* hw control flags */

    bool control_mode;

};

​

#define to_flexgen(_hw) container_of(_hw, struct flexgen, hw)

#define to_clk_gate(_hw) container_of(_hw, struct clk_gate, hw)

​

static int flexgen_enable(struct clk_hw *hw)

{

    struct flexgen *flexgen = to_flexgen(hw);

    struct clk_hw *pgate_hw = &flexgen->pgate.hw;

    struct clk_hw *fgate_hw = &flexgen->fgate.hw;

​

    __clk_hw_set_clk(pgate_hw, hw);

    __clk_hw_set_clk(fgate_hw, hw);

​

    clk_gate_ops.enable(pgate_hw);

​

    clk_gate_ops.enable(fgate_hw);

​

    pr_debug("%s: flexgen output enabled\n", clk_hw_get_name(hw));

    return 0;

}

​

static void flexgen_disable(struct clk_hw *hw)

{