1 /* SPDX-License-Identifier: GPL-2.0-only */
2 /*
3  * rl6231.h - RL6231 class device shared support
4  *
5  * Copyright 2014 Realtek Semiconductor Corp.
6  *
7  * Author: Oder Chiou <oder_chiou@realtek.com>
8  */
9 
10 #ifndef __RL6231_H__
11 #define __RL6231_H__
12 
13 #define RL6231_PLL_INP_MAX	40000000
14 #define RL6231_PLL_INP_MIN	256000
15 #define RL6231_PLL_N_MAX	0x1ff
16 #define RL6231_PLL_K_MAX	0x1f
17 #define RL6231_PLL_M_MAX	0xf
18 
19 struct rl6231_pll_code {
20 	bool m_bp; /* Indicates bypass m code or not. */
21 	int m_code;
22 	int n_code;
23 	int k_code;
24 };
25 
26 int rl6231_calc_dmic_clk(int rate);
27 int rl6231_pll_calc(const unsigned int freq_in,
28 	const unsigned int freq_out, struct rl6231_pll_code *pll_code);
29 int rl6231_get_clk_info(int sclk, int rate);
30 int rl6231_get_pre_div(struct regmap *map, unsigned int reg, int sft);
31 
32 #endif /* __RL6231_H__ */
33