diff options
Diffstat (limited to 'drivers/media/dvb-frontends/drxk.h')
| -rw-r--r-- | drivers/media/dvb-frontends/drxk.h | 75 |
1 files changed, 75 insertions, 0 deletions
diff --git a/drivers/media/dvb-frontends/drxk.h b/drivers/media/dvb-frontends/drxk.h new file mode 100644 index 000000000..69fdca00f --- /dev/null +++ b/drivers/media/dvb-frontends/drxk.h @@ -0,0 +1,75 @@ +/* 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 |