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// SPDX-License-Identifier: GPL-2.0+
/*
* Copyright 2021 NXP
*
* Peng Fan <peng.fan@nxp.com>
*/
#include <linux/clk-provider.h>
#include <linux/errno.h>
#include <linux/export.h>
#include <linux/io.h>
#include <linux/slab.h>
#include "clk.h"
#define CCM_DIV_SHIFT 0
#define CCM_DIV_WIDTH 8
#define CCM_MUX_SHIFT 8
#define CCM_MUX_MASK 3
#define CCM_OFF_SHIFT 24
#define AUTHEN_OFFSET 0x30
#define TZ_NS_SHIFT 9
#define TZ_NS_MASK BIT(9)
struct clk_hw *imx93_clk_composite_flags(const char *name, const char * const *parent_names,
int num_parents, void __iomem *reg,
unsigned long flags)
{
struct clk_hw *hw = ERR_PTR(-ENOMEM), *mux_hw;
struct clk_hw *div_hw, *gate_hw;
struct clk_divider *div = NULL;
struct clk_gate *gate = NULL;
struct clk_mux *mux = NULL;
bool clk_ro = false;
mux = kzalloc(sizeof(*mux), GFP_KERNEL);
if (!mux)
goto fail;
mux_hw = &mux->hw;
mux->reg = reg;
mux->shift = CCM_MUX_SHIFT;
mux->mask = CCM_MUX_MASK;
mux->lock = &imx_ccm_lock;
div = kzalloc(sizeof(*div), GFP_KERNEL);
if (!div)
goto fail;
div_hw = &div->hw;
div->reg = reg;
div->shift = CCM_DIV_SHIFT;
div->width = CCM_DIV_WIDTH;
div->lock = &imx_ccm_lock;
div->flags = CLK_DIVIDER_ROUND_CLOSEST;
if (!(readl(reg + AUTHEN_OFFSET) & TZ_NS_MASK))
clk_ro = true;
if (clk_ro) {
hw = clk_hw_register_composite(NULL, name, parent_names, num_parents,
mux_hw, &clk_mux_ro_ops, div_hw,
&clk_divider_ro_ops, NULL, NULL, flags);
} else {
gate = kzalloc(sizeof(*gate), GFP_KERNEL);
if (!gate)
goto fail;
gate_hw = &gate->hw;
gate->reg = reg;
gate->bit_idx = CCM_OFF_SHIFT;
gate->lock = &imx_ccm_lock;
gate->flags = CLK_GATE_SET_TO_DISABLE;
hw = clk_hw_register_composite(NULL, name, parent_names, num_parents,
mux_hw, &clk_mux_ops, div_hw,
&clk_divider_ops, gate_hw,
&clk_gate_ops, flags | CLK_SET_RATE_NO_REPARENT);
}
if (IS_ERR(hw))
goto fail;
return hw;
fail:
kfree(gate);
kfree(div);
kfree(mux);
return ERR_CAST(hw);
}
EXPORT_SYMBOL_GPL(imx93_clk_composite_flags);
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