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// SPDX-License-Identifier: GPL-2.0+
/*
* Copyright (C) 2016 Freescale Semiconductor, Inc.
* Copyright 2017~2018 NXP
*
*/
#include <linux/clk-provider.h>
#include <linux/err.h>
#include <linux/slab.h>
#include "clk.h"
#define PCG_PCS_SHIFT 24
#define PCG_PCS_MASK 0x7
#define PCG_CGC_SHIFT 30
#define PCG_FRAC_SHIFT 3
#define PCG_FRAC_WIDTH 1
#define PCG_FRAC_MASK BIT(3)
#define PCG_PCD_SHIFT 0
#define PCG_PCD_WIDTH 3
#define PCG_PCD_MASK 0x7
struct clk_hw *imx7ulp_clk_composite(const char *name,
const char * const *parent_names,
int num_parents, bool mux_present,
bool rate_present, bool gate_present,
void __iomem *reg)
{
struct clk_hw *mux_hw = NULL, *fd_hw = NULL, *gate_hw = NULL;
struct clk_fractional_divider *fd = NULL;
struct clk_gate *gate = NULL;
struct clk_mux *mux = NULL;
struct clk_hw *hw;
if (mux_present) {
mux = kzalloc(sizeof(*mux), GFP_KERNEL);
if (!mux)
return ERR_PTR(-ENOMEM);
mux_hw = &mux->hw;
mux->reg = reg;
mux->shift = PCG_PCS_SHIFT;
mux->mask = PCG_PCS_MASK;
}
if (rate_present) {
fd = kzalloc(sizeof(*fd), GFP_KERNEL);
if (!fd) {
kfree(mux);
return ERR_PTR(-ENOMEM);
}
fd_hw = &fd->hw;
fd->reg = reg;
fd->mshift = PCG_FRAC_SHIFT;
fd->mwidth = PCG_FRAC_WIDTH;
fd->mmask = PCG_FRAC_MASK;
fd->nshift = PCG_PCD_SHIFT;
fd->nwidth = PCG_PCD_WIDTH;
fd->nmask = PCG_PCD_MASK;
fd->flags = CLK_FRAC_DIVIDER_ZERO_BASED;
}
if (gate_present) {
gate = kzalloc(sizeof(*gate), GFP_KERNEL);
if (!gate) {
kfree(mux);
kfree(fd);
return ERR_PTR(-ENOMEM);
}
gate_hw = &gate->hw;
gate->reg = reg;
gate->bit_idx = PCG_CGC_SHIFT;
}
hw = clk_hw_register_composite(NULL, name, parent_names, num_parents,
mux_hw, &clk_mux_ops, fd_hw,
&clk_fractional_divider_ops, gate_hw,
&clk_gate_ops, CLK_SET_RATE_GATE |
CLK_SET_PARENT_GATE);
if (IS_ERR(hw)) {
kfree(mux);
kfree(fd);
kfree(gate);
}
return hw;
}
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