cachepc-linux

Fork of AMDESE/linux with modifications for CachePC side-channel attack
git clone https://git.sinitax.com/sinitax/cachepc-linux
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radio-tea5777.h (2303B)

      1/* SPDX-License-Identifier: GPL-2.0-or-later */
      2#ifndef __RADIO_TEA5777_H
      3#define __RADIO_TEA5777_H
      4
      5/*
      6 *   v4l2 driver for TEA5777 Philips AM/FM radio tuner chips
      7 *
      8 *	Copyright (c) 2012 Hans de Goede <hdegoede@redhat.com>
      9 *
     10 *   Based on the ALSA driver for TEA5757/5759 Philips AM/FM radio tuner chips:
     11 *
     12 *	Copyright (c) 2004 Jaroslav Kysela <perex@perex.cz>
     13 *	Copyright (c) 2012 Hans de Goede <hdegoede@redhat.com>
     14 */
     15
     16#include <linux/videodev2.h>
     17#include <media/v4l2-ctrls.h>
     18#include <media/v4l2-dev.h>
     19#include <media/v4l2-device.h>
     20
     21#define TEA575X_FMIF	10700
     22#define TEA575X_AMIF	  450
     23
     24struct radio_tea5777;
     25
     26struct radio_tea5777_ops {
     27	/*
     28	 * Write the 6 bytes large write register of the tea5777
     29	 *
     30	 * val represents the 6 write registers, with byte 1 from the
     31	 * datasheet being the most significant byte (so byte 5 of the u64),
     32	 * and byte 6 from the datasheet being the least significant byte.
     33	 *
     34	 * returns 0 on success.
     35	 */
     36	int (*write_reg)(struct radio_tea5777 *tea, u64 val);
     37	/*
     38	 * Read the 3 bytes large read register of the tea5777
     39	 *
     40	 * The read value gets returned in val, akin to write_reg, byte 1 from
     41	 * the datasheet is stored as the most significant byte (so byte 2 of
     42	 * the u32), and byte 3 from the datasheet gets stored as the least
     43	 * significant byte (iow byte 0 of the u32).
     44	 *
     45	 * returns 0 on success.
     46	 */
     47	int (*read_reg)(struct radio_tea5777 *tea, u32 *val);
     48};
     49
     50struct radio_tea5777 {
     51	struct v4l2_device *v4l2_dev;
     52	struct v4l2_file_operations fops;
     53	struct video_device vd;		/* video device */
     54	bool has_am;			/* Device can tune to AM freqs */
     55	bool write_before_read;		/* must write before read quirk */
     56	bool needs_write;		/* for write before read quirk */
     57	u32 band;			/* current band */
     58	u32 freq;			/* current frequency */
     59	u32 audmode;			/* last set audmode */
     60	u32 seek_rangelow;		/* current hwseek limits */
     61	u32 seek_rangehigh;
     62	u32 read_reg;
     63	u64 write_reg;
     64	struct mutex mutex;
     65	const struct radio_tea5777_ops *ops;
     66	void *private_data;
     67	u8 card[32];
     68	u8 bus_info[32];
     69	struct v4l2_ctrl_handler ctrl_handler;
     70};
     71
     72int radio_tea5777_init(struct radio_tea5777 *tea, struct module *owner);
     73void radio_tea5777_exit(struct radio_tea5777 *tea);
     74int radio_tea5777_set_freq(struct radio_tea5777 *tea);
     75
     76#endif /* __RADIO_TEA5777_H */