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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cxd2820r.h (3129B)

      1/* SPDX-License-Identifier: GPL-2.0-or-later */
      2/*
      3 * Sony CXD2820R demodulator driver
      4 *
      5 * Copyright (C) 2010 Antti Palosaari <crope@iki.fi>
      6 */
      7
      8
      9#ifndef CXD2820R_H
     10#define CXD2820R_H
     11
     12#include <linux/dvb/frontend.h>
     13
     14#define CXD2820R_GPIO_D (0 << 0) /* disable */
     15#define CXD2820R_GPIO_E (1 << 0) /* enable */
     16#define CXD2820R_GPIO_O (0 << 1) /* output */
     17#define CXD2820R_GPIO_I (1 << 1) /* input */
     18#define CXD2820R_GPIO_L (0 << 2) /* output low */
     19#define CXD2820R_GPIO_H (1 << 2) /* output high */
     20
     21#define CXD2820R_TS_SERIAL        0x08
     22#define CXD2820R_TS_SERIAL_MSB    0x28
     23#define CXD2820R_TS_PARALLEL      0x30
     24#define CXD2820R_TS_PARALLEL_MSB  0x70
     25
     26/*
     27 * I2C address: 0x6c, 0x6d
     28 */
     29
     30/**
     31 * struct cxd2820r_platform_data - Platform data for the cxd2820r driver
     32 * @ts_mode: TS mode.
     33 * @ts_clk_inv: TS clock inverted.
     34 * @if_agc_polarity: IF AGC polarity.
     35 * @spec_inv: Input spectrum inverted.
     36 * @gpio_chip_base: GPIO.
     37 * @get_dvb_frontend: Get DVB frontend.
     38 */
     39struct cxd2820r_platform_data {
     40	u8 ts_mode;
     41	bool ts_clk_inv;
     42	bool if_agc_polarity;
     43	bool spec_inv;
     44	int **gpio_chip_base;
     45
     46	struct dvb_frontend* (*get_dvb_frontend)(struct i2c_client *);
     47/* private: For legacy media attach wrapper. Do not set value. */
     48	bool attach_in_use;
     49};
     50
     51/**
     52 * struct cxd2820r_config - configuration for cxd2020r demod
     53 *
     54 * @i2c_address: Demodulator I2C address. Driver determines DVB-C slave I2C
     55 *		 address automatically from master address.
     56 *		 Default: none, must set. Values: 0x6c, 0x6d.
     57 * @ts_mode:	TS output mode. Default: none, must set. Values: FIXME?
     58 * @ts_clock_inv: TS clock inverted. Default: 0. Values: 0, 1.
     59 * @if_agc_polarity: Default: 0. Values: 0, 1
     60 * @spec_inv:	Spectrum inversion. Default: 0. Values: 0, 1.
     61 */
     62struct cxd2820r_config {
     63	/* Demodulator I2C address.
     64	 * Driver determines DVB-C slave I2C address automatically from master
     65	 * address.
     66	 * Default: none, must set
     67	 * Values: 0x6c, 0x6d
     68	 */
     69	u8 i2c_address;
     70
     71	/* TS output mode.
     72	 * Default: none, must set.
     73	 * Values:
     74	 */
     75	u8 ts_mode;
     76
     77	/* TS clock inverted.
     78	 * Default: 0
     79	 * Values: 0, 1
     80	 */
     81	bool ts_clock_inv;
     82
     83	/* IF AGC polarity.
     84	 * Default: 0
     85	 * Values: 0, 1
     86	 */
     87	bool if_agc_polarity;
     88
     89	/* Spectrum inversion.
     90	 * Default: 0
     91	 * Values: 0, 1
     92	 */
     93	bool spec_inv;
     94};
     95
     96
     97#if IS_REACHABLE(CONFIG_DVB_CXD2820R)
     98/**
     99 * cxd2820r_attach - Attach a cxd2820r demod
    100 *
    101 * @config: pointer to &struct cxd2820r_config with demod configuration.
    102 * @i2c: i2c adapter to use.
    103 * @gpio_chip_base: if zero, disables GPIO setting. Otherwise, if
    104 *		    CONFIG_GPIOLIB is set dynamically allocate
    105 *		    gpio base; if is not set, use its value to
    106 *		    setup the GPIO pins.
    107 *
    108 * return: FE pointer on success, NULL on failure.
    109 */
    110extern struct dvb_frontend *cxd2820r_attach(
    111	const struct cxd2820r_config *config,
    112	struct i2c_adapter *i2c,
    113	int *gpio_chip_base
    114);
    115#else
    116static inline struct dvb_frontend *cxd2820r_attach(
    117	const struct cxd2820r_config *config,
    118	struct i2c_adapter *i2c,
    119	int *gpio_chip_base
    120)
    121{
    122	printk(KERN_WARNING "%s: driver disabled by Kconfig\n", __func__);
    123	return NULL;
    124}
    125
    126#endif
    127
    128#endif /* CXD2820R_H */