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/* SPDX-License-Identifier: GPL-2.0 */ #ifndef _DRXK_H_ #define _DRXK_H_ #include <linux/types.h> #include <linux/i2c.h> /** * struct drxk_config - Configure the initial parameters for DRX-K * * @adr: I2C address of the DRX-K * @parallel_ts: True means that the device uses parallel TS, * Serial otherwise. * @dynamic_clk: True means that the clock will be dynamically * adjusted. Static clock otherwise. * @enable_merr_cfg: Enable SIO_PDR_PERR_CFG/SIO_PDR_MVAL_CFG. * @single_master: Device is on the single master mode * @no_i2c_bridge: Don't switch the I2C bridge to talk with tuner * @antenna_gpio: GPIO bit used to control the antenna * @antenna_dvbt: GPIO bit for changing antenna to DVB-C. A value of 1 * means that 1=DVBC, 0 = DVBT. Zero means the opposite. * @mpeg_out_clk_strength: DRXK Mpeg output clock drive strength. * @chunk_size: maximum size for I2C messages * @microcode_name: Name of the firmware file with the microcode * @qam_demod_parameter_count: The number of parameters used for the command * to set the demodulator parameters. All * firmwares are using the 2-parameter command. * An exception is the ``drxk_a3.mc`` firmware, * which uses the 4-parameter command. * A value of 0 (default) or lower indicates that * the correct number of parameters will be * automatically detected. * * On the ``*_gpio`` vars, bit 0 is UIO-1, bit 1 is UIO-2 and bit 2 is * UIO-3. */ struct drxk_config { u8 adr; bool single_master; bool no_i2c_bridge; bool parallel_ts; bool dynamic_clk; bool enable_merr_cfg; bool antenna_dvbt; u16 antenna_gpio; u8 mpeg_out_clk_strength; int chunk_size; const char *microcode_name; int qam_demod_parameter_count; }; #if IS_REACHABLE(CONFIG_DVB_DRXK) /** * drxk_attach - Attach a drxk demod * * @config: pointer to &struct drxk_config with demod configuration. * @i2c: i2c adapter to use. * * return: FE pointer on success, NULL on failure. */ extern struct dvb_frontend *drxk_attach(const struct drxk_config *config, struct i2c_adapter *i2c); #else static inline struct dvb_frontend *drxk_attach(const struct drxk_config *config, struct i2c_adapter *i2c) { printk(KERN_WARNING "%s: driver disabled by Kconfig\n", __func__); return NULL; } #endif #endif |