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1/* SPDX-License-Identifier: GPL-2.0 */2#ifndef __LM7000_H3#define __LM7000_H4 5/* Sanyo LM7000 tuner chip control6 *7 * Copyright 2012 Ondrej Zary <linux@rainbow-software.org>8 * based on radio-aimslab.c by M. Kirkwood9 * and radio-sf16fmi.c by M. Kirkwood and Petr Vandrovec10 */11 12#define LM7000_DATA (1 << 0)13#define LM7000_CLK (1 << 1)14#define LM7000_CE (1 << 2)15 16#define LM7000_FM_100 (0 << 20)17#define LM7000_FM_50 (1 << 20)18#define LM7000_FM_25 (2 << 20)19#define LM7000_BIT_FM (1 << 23)20 21static inline void lm7000_set_freq(u32 freq, void *handle,22 void (*set_pins)(void *handle, u8 pins))23{24 int i;25 u8 data;26 u32 val;27 28 freq += 171200; /* Add 10.7 MHz IF */29 freq /= 400; /* Convert to 25 kHz units */30 val = freq | LM7000_FM_25 | LM7000_BIT_FM;31 /* write the 24-bit register, starting with LSB */32 for (i = 0; i < 24; i++) {33 data = val & (1 << i) ? LM7000_DATA : 0;34 set_pins(handle, data | LM7000_CE);35 udelay(2);36 set_pins(handle, data | LM7000_CE | LM7000_CLK);37 udelay(2);38 set_pins(handle, data | LM7000_CE);39 udelay(2);40 }41 set_pins(handle, 0);42}43 44#endif /* __LM7000_H */45