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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drxk.h (2293B)

      1/* SPDX-License-Identifier: GPL-2.0 */
      2#ifndef _DRXK_H_
      3#define _DRXK_H_
      4
      5#include <linux/types.h>
      6#include <linux/i2c.h>
      7
      8/**
      9 * struct drxk_config - Configure the initial parameters for DRX-K
     10 *
     11 * @adr:		I2C address of the DRX-K
     12 * @parallel_ts:	True means that the device uses parallel TS,
     13 *			Serial otherwise.
     14 * @dynamic_clk:	True means that the clock will be dynamically
     15 *			adjusted. Static clock otherwise.
     16 * @enable_merr_cfg:	Enable SIO_PDR_PERR_CFG/SIO_PDR_MVAL_CFG.
     17 * @single_master:	Device is on the single master mode
     18 * @no_i2c_bridge:	Don't switch the I2C bridge to talk with tuner
     19 * @antenna_gpio:	GPIO bit used to control the antenna
     20 * @antenna_dvbt:	GPIO bit for changing antenna to DVB-C. A value of 1
     21 *			means that 1=DVBC, 0 = DVBT. Zero means the opposite.
     22 * @mpeg_out_clk_strength: DRXK Mpeg output clock drive strength.
     23 * @chunk_size:		maximum size for I2C messages
     24 * @microcode_name:	Name of the firmware file with the microcode
     25 * @qam_demod_parameter_count:	The number of parameters used for the command
     26 *				to set the demodulator parameters. All
     27 *				firmwares are using the 2-parameter command.
     28 *				An exception is the ``drxk_a3.mc`` firmware,
     29 *				which uses the 4-parameter command.
     30 *				A value of 0 (default) or lower indicates that
     31 *				the correct number of parameters will be
     32 *				automatically detected.
     33 *
     34 * On the ``*_gpio`` vars, bit 0 is UIO-1, bit 1 is UIO-2 and bit 2 is
     35 * UIO-3.
     36 */
     37struct drxk_config {
     38	u8	adr;
     39	bool	single_master;
     40	bool	no_i2c_bridge;
     41	bool	parallel_ts;
     42	bool	dynamic_clk;
     43	bool	enable_merr_cfg;
     44
     45	bool	antenna_dvbt;
     46	u16	antenna_gpio;
     47
     48	u8	mpeg_out_clk_strength;
     49	int	chunk_size;
     50
     51	const char	*microcode_name;
     52	int		 qam_demod_parameter_count;
     53};
     54
     55#if IS_REACHABLE(CONFIG_DVB_DRXK)
     56/**
     57 * drxk_attach - Attach a drxk demod
     58 *
     59 * @config: pointer to &struct drxk_config with demod configuration.
     60 * @i2c: i2c adapter to use.
     61 *
     62 * return: FE pointer on success, NULL on failure.
     63 */
     64extern struct dvb_frontend *drxk_attach(const struct drxk_config *config,
     65					struct i2c_adapter *i2c);
     66#else
     67static inline struct dvb_frontend *drxk_attach(const struct drxk_config *config,
     68					struct i2c_adapter *i2c)
     69{
     70	printk(KERN_WARNING "%s: driver disabled by Kconfig\n", __func__);
     71	return NULL;
     72}
     73#endif
     74
     75#endif