| 1 | /* SPDX-License-Identifier: GPL-2.0 */ |
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| 2 | #ifndef _DRXK_H_ |
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| 3 | #define _DRXK_H_ |
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| 4 | |
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| 5 | #include <linux/types.h> |
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| 6 | #include <linux/i2c.h> |
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| 7 | |
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| 8 | /** |
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| 9 | * struct drxk_config - Configure the initial parameters for DRX-K |
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| 10 | * |
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| 11 | * @adr: I2C address of the DRX-K |
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| 12 | * @parallel_ts: True means that the device uses parallel TS, |
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| 13 | * Serial otherwise. |
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| 14 | * @dynamic_clk: True means that the clock will be dynamically |
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| 15 | * adjusted. Static clock otherwise. |
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| 16 | * @enable_merr_cfg: Enable SIO_PDR_PERR_CFG/SIO_PDR_MVAL_CFG. |
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| 17 | * @single_master: Device is on the single master mode |
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| 18 | * @no_i2c_bridge: Don't switch the I2C bridge to talk with tuner |
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| 19 | * @antenna_gpio: GPIO bit used to control the antenna |
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| 20 | * @antenna_dvbt: GPIO bit for changing antenna to DVB-C. A value of 1 |
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| 21 | * means that 1=DVBC, 0 = DVBT. Zero means the opposite. |
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| 22 | * @mpeg_out_clk_strength: DRXK Mpeg output clock drive strength. |
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| 23 | * @chunk_size: maximum size for I2C messages |
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| 24 | * @microcode_name: Name of the firmware file with the microcode |
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| 25 | * @qam_demod_parameter_count: The number of parameters used for the command |
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| 26 | * to set the demodulator parameters. All |
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| 27 | * firmwares are using the 2-parameter command. |
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| 28 | * An exception is the ``drxk_a3.mc`` firmware, |
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| 29 | * which uses the 4-parameter command. |
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| 30 | * A value of 0 (default) or lower indicates that |
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| 31 | * the correct number of parameters will be |
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| 32 | * automatically detected. |
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| 33 | * |
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| 34 | * On the ``*_gpio`` vars, bit 0 is UIO-1, bit 1 is UIO-2 and bit 2 is |
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| 35 | * UIO-3. |
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| 36 | */ |
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| 37 | struct drxk_config { |
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| 38 | u8 adr; |
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| 39 | bool single_master; |
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| 40 | bool no_i2c_bridge; |
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| 41 | bool parallel_ts; |
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| 42 | bool dynamic_clk; |
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| 43 | bool enable_merr_cfg; |
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| 44 | |
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| 45 | bool antenna_dvbt; |
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| 46 | u16 antenna_gpio; |
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| 47 | |
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| 48 | u8 mpeg_out_clk_strength; |
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| 49 | int chunk_size; |
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| 50 | |
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| 51 | const char *microcode_name; |
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| 52 | int qam_demod_parameter_count; |
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| 53 | }; |
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| 54 | |
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| 55 | #if IS_REACHABLE(CONFIG_DVB_DRXK) |
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| 56 | /** |
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| 57 | * drxk_attach - Attach a drxk demod |
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| 58 | * |
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| 59 | * @config: pointer to &struct drxk_config with demod configuration. |
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| 60 | * @i2c: i2c adapter to use. |
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| 61 | * |
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| 62 | * return: FE pointer on success, NULL on failure. |
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| 63 | */ |
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| 64 | extern struct dvb_frontend *drxk_attach(const struct drxk_config *config, |
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| 65 | struct i2c_adapter *i2c); |
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| 66 | #else |
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| 67 | static inline struct dvb_frontend *drxk_attach(const struct drxk_config *config, |
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| 68 | struct i2c_adapter *i2c) |
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| 69 | { |
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| 70 | printk(KERN_WARNING "%s: driver disabled by Kconfig\n" , __func__); |
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| 71 | return NULL; |
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| 72 | } |
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| 73 | #endif |
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| 74 | |
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| 75 | #endif |
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| 76 | |
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