1 /* SPDX-License-Identifier: GPL-2.0-only */ 2 3 #ifndef _ZL3073X_SYNTH_H 4 #define _ZL3073X_SYNTH_H 5 6 #include <linux/bitfield.h> 7 #include <linux/math64.h> 8 #include <linux/stddef.h> 9 #include <linux/types.h> 10 11 #include "regs.h" 12 13 struct zl3073x_dev; 14 15 /** 16 * struct zl3073x_synth - synthesizer state 17 * @freq_mult: frequency multiplier 18 * @freq_base: frequency base 19 * @freq_m: frequency numerator 20 * @freq_n: frequency denominator 21 * @ctrl: synth control 22 */ 23 struct zl3073x_synth { 24 struct_group(inv, /* Invariants */ 25 u32 freq_mult; 26 u16 freq_base; 27 u16 freq_m; 28 u16 freq_n; 29 u8 ctrl; 30 ); 31 }; 32 33 int zl3073x_synth_state_fetch(struct zl3073x_dev *zldev, u8 synth_id); 34 35 const struct zl3073x_synth *zl3073x_synth_state_get(struct zl3073x_dev *zldev, 36 u8 synth_id); 37 38 /** 39 * zl3073x_synth_dpll_get - get DPLL ID the synth is driven by 40 * @synth: pointer to synth state 41 * 42 * Return: ID of DPLL the given synthetizer is driven by 43 */ 44 static inline u8 zl3073x_synth_dpll_get(const struct zl3073x_synth *synth) 45 { 46 return FIELD_GET(ZL_SYNTH_CTRL_DPLL_SEL, synth->ctrl); 47 } 48 49 /** 50 * zl3073x_synth_freq_get - get synth current freq 51 * @synth: pointer to synth state 52 * 53 * Return: frequency of given synthetizer 54 */ 55 static inline u32 zl3073x_synth_freq_get(const struct zl3073x_synth *synth) 56 { 57 return mul_u64_u32_div(synth->freq_base * synth->freq_m, 58 synth->freq_mult, synth->freq_n); 59 } 60 61 /** 62 * zl3073x_synth_is_enabled - check if the given synth is enabled 63 * @synth: pointer to synth state 64 * 65 * Return: true if synth is enabled, false otherwise 66 */ 67 static inline bool zl3073x_synth_is_enabled(const struct zl3073x_synth *synth) 68 { 69 return FIELD_GET(ZL_SYNTH_CTRL_EN, synth->ctrl); 70 } 71 72 #endif /* _ZL3073X_SYNTH_H */ 73