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- /* SPDX-License-Identifier: GPL-2.0 */
- /*
- * Copyright (c) 2017, Linaro Limited
- * Author: Georgi Djakov <[email protected]>
- */
- #ifndef __QCOM_CLK_REGMAP_MUX_DIV_H__
- #define __QCOM_CLK_REGMAP_MUX_DIV_H__
- #include <linux/clk-provider.h>
- #include "clk-regmap.h"
- /**
- * struct mux_div_clk - combined mux/divider clock
- * @reg_offset: offset of the mux/divider register
- * @hid_width: number of bits in half integer divider
- * @hid_shift: lowest bit of hid value field
- * @src_width: number of bits in source select
- * @src_shift: lowest bit of source select field
- * @div: the divider raw configuration value
- * @src: the mux index which will be used if the clock is enabled
- * @safe_src: the safe source mux value we switch to, while the main PLL is
- * reconfigured
- * @safe_div: the safe divider value that we set, while the main PLL is
- * reconfigured
- * @safe_freq: When switching rates from A to B, the mux div clock will
- * instead switch from A -> safe_freq -> B. This allows the
- * mux_div clock to change rates while enabled, even if this
- * behavior is not supported by the parent clocks.
- * If changing the rate of parent A also causes the rate of
- * parent B to change, then safe_freq must be defined.
- * safe_freq is expected to have a source clock which is always
- * on and runs at only one rate.
- * @parent_map: pointer to parent_map struct
- * @clkr: handle between common and hardware-specific interfaces
- * @pclk: the input PLL clock
- * @clk_nb: clock notifier for rate changes of the input PLL
- */
- struct clk_regmap_mux_div {
- u32 reg_offset;
- u32 hid_width;
- u32 hid_shift;
- u32 src_width;
- u32 src_shift;
- u32 div;
- u32 src;
- u32 safe_src;
- u32 safe_div;
- unsigned long safe_freq;
- const struct parent_map *parent_map;
- struct clk_regmap clkr;
- struct clk *pclk;
- struct notifier_block clk_nb;
- };
- extern const struct clk_ops clk_regmap_mux_div_ops;
- extern int mux_div_set_src_div(struct clk_regmap_mux_div *md, u32 src, u32 div);
- int mux_div_get_src_div(struct clk_regmap_mux_div *md, u32 *src, u32 *div);
- #endif
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