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- // SPDX-License-Identifier: GPL-2.0+
- /*
- * Copyright (C) 2016 Freescale Semiconductor, Inc.
- * Copyright 2017~2018 NXP
- *
- */
- #include <linux/bits.h>
- #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_hw_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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