cachepc-linux

Fork of AMDESE/linux with modifications for CachePC side-channel attack
git clone https://git.sinitax.com/sinitax/cachepc-linux
Log | Files | Refs | README | LICENSE | sfeed.txt

lm7000.h (1097B)

      1/* SPDX-License-Identifier: GPL-2.0 */
      2#ifndef __LM7000_H
      3#define __LM7000_H
      4
      5/* Sanyo LM7000 tuner chip control
      6 *
      7 * Copyright 2012 Ondrej Zary <linux@rainbow-software.org>
      8 * based on radio-aimslab.c by M. Kirkwood
      9 * and radio-sf16fmi.c by M. Kirkwood and Petr Vandrovec
     10 */
     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 */