9.2.2. Frontend drivers¶

9.2.2.1. Frontend attach headers¶

struct a8293_platform_data¶: Platform data for the a8293 driver

Definition:

struct a8293_platform_data {
    struct dvb_frontend *dvb_frontend;
    int volt_slew_nanos_per_mv;
};

Members

dvb_frontend: DVB frontend.
volt_slew_nanos_per_mv: Slew rate when increasing LNB voltage, in nanoseconds per millivolt.

struct af9013_platform_data¶: Platform data for the af9013 driver

Definition:

struct af9013_platform_data {
    u32 clk;
#define AF9013_TUNER_MXL5003D      3 ;
#define AF9013_TUNER_MXL5005D     13 ;
#define AF9013_TUNER_MXL5005R     30 ;
#define AF9013_TUNER_ENV77H11D5  129 ;
#define AF9013_TUNER_MT2060      130 ;
#define AF9013_TUNER_MC44S803    133 ;
#define AF9013_TUNER_QT1010      134 ;
#define AF9013_TUNER_UNKNOWN     140 ;
#define AF9013_TUNER_MT2060_2    147 ;
#define AF9013_TUNER_TDA18271    156 ;
#define AF9013_TUNER_QT1010A     162 ;
#define AF9013_TUNER_MXL5007T    177 ;
#define AF9013_TUNER_TDA18218    179 ;
    u8 tuner;
    u32 if_frequency;
#define AF9013_TS_MODE_USB       0;
#define AF9013_TS_MODE_PARALLEL  1;
#define AF9013_TS_MODE_SERIAL    2;
    u8 ts_mode;
    u8 ts_output_pin;
    bool spec_inv;
    u8 api_version[4];
#define AF9013_GPIO_ON (1 << 0);
#define AF9013_GPIO_EN (1 << 1);
#define AF9013_GPIO_O  (1 << 2);
#define AF9013_GPIO_I  (1 << 3);
#define AF9013_GPIO_LO (AF9013_GPIO_ON|AF9013_GPIO_EN);
#define AF9013_GPIO_HI (AF9013_GPIO_ON|AF9013_GPIO_EN|AF9013_GPIO_O);
#define AF9013_GPIO_TUNER_ON  (AF9013_GPIO_ON|AF9013_GPIO_EN);
#define AF9013_GPIO_TUNER_OFF (AF9013_GPIO_ON|AF9013_GPIO_EN|AF9013_GPIO_O);
    u8 gpio[4];
    struct dvb_frontend* (*get_dvb_frontend)(struct i2c_client *);
    struct i2c_adapter* (*get_i2c_adapter)(struct i2c_client *);
    int (*pid_filter_ctrl)(struct dvb_frontend *, int);
    int (*pid_filter)(struct dvb_frontend *, u8, u16, int);
};

Members

clk: Clock frequency.
tuner: Used tuner model.
if_frequency: IF frequency.
ts_mode: TS mode.
ts_output_pin: TS output pin.
spec_inv: Input spectrum inverted.
api_version: Firmware API version.
gpio: GPIOs.
get_dvb_frontend: Get DVB frontend callback.
get_i2c_adapter: Get I2C adapter.
pid_filter_ctrl: Control PID filter.
pid_filter: Set PID to PID filter.

struct ascot2e_config¶: the configuration of Ascot2E tuner driver

Definition:

struct ascot2e_config {
    u8 i2c_address;
    u8 xtal_freq_mhz;
    void *set_tuner_priv;
    int (*set_tuner_callback)(void *, int);
};

Members

i2c_address: I2C address of the tuner
xtal_freq_mhz: Oscillator frequency, MHz
set_tuner_priv: Callback function private context
set_tuner_callback: Callback function that notifies the parent driver which tuner is active now

struct dvb_frontend *ascot2e_attach(struct dvb_frontend *fe, const struct ascot2e_config *config, struct i2c_adapter *i2c)¶: Attach an ascot2e tuner

Parameters

struct dvb_frontend *fe: frontend to be attached
const struct ascot2e_config *config: pointer to struct ascot2e_config with tuner configuration.
struct i2c_adapter *i2c: i2c adapter to use.

Return

FE pointer on success, NULL on failure.

struct cxd2820r_platform_data¶: Platform data for the cxd2820r driver

Definition:

struct cxd2820r_platform_data {
    u8 ts_mode;
    bool ts_clk_inv;
    bool if_agc_polarity;
    bool spec_inv;
    int **gpio_chip_base;
    struct dvb_frontend* (*get_dvb_frontend)(struct i2c_client *);
};

Members

ts_mode: TS mode.
ts_clk_inv: TS clock inverted.
if_agc_polarity: IF AGC polarity.
spec_inv: Input spectrum inverted.
gpio_chip_base: GPIO.
get_dvb_frontend: Get DVB frontend.

struct cxd2820r_config¶: configuration for cxd2020r demod

Definition:

struct cxd2820r_config {
    u8 i2c_address;
    u8 ts_mode;
    bool ts_clock_inv;
    bool if_agc_polarity;
    bool spec_inv;
};

Members

i2c_address: Demodulator I2C address. Driver determines DVB-C slave I2C address automatically from master address. Default: none, must set. Values: 0x6c, 0x6d.
ts_mode: TS output mode. Default: none, must set. Values: FIXME?
ts_clock_inv: TS clock inverted. Default: 0. Values: 0, 1.
if_agc_polarity: Default: 0. Values: 0, 1
spec_inv: Spectrum inversion. Default: 0. Values: 0, 1.

struct dvb_frontend *cxd2820r_attach(const struct cxd2820r_config *config, struct i2c_adapter *i2c, int *gpio_chip_base)¶: Attach a cxd2820r demod

Parameters

const struct cxd2820r_config *config: pointer to struct cxd2820r_config with demod configuration.
struct i2c_adapter *i2c: i2c adapter to use.
int *gpio_chip_base: if zero, disables GPIO setting. Otherwise, if CONFIG_GPIOLIB is set dynamically allocate gpio base; if is not set, use its value to setup the GPIO pins.

Return

FE pointer on success, NULL on failure.

struct drxk_config¶: Configure the initial parameters for DRX-K

Definition:

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;
};

Members

adr: I2C address of the DRX-K
single_master: Device is on the single master mode
no_i2c_bridge: Don’t switch the I2C bridge to talk with tuner
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.
antenna_dvbt: GPIO bit for changing antenna to DVB-C. A value of 1 means that 1=DVBC, 0 = DVBT. Zero means the opposite.
antenna_gpio: GPIO bit used to control the antenna
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.

Description

On the *_gpio vars, bit 0 is UIO-1, bit 1 is UIO-2 and bit 2 is UIO-3.

struct dvb_frontend *drxk_attach(const struct drxk_config *config, struct i2c_adapter *i2c)¶: Attach a drxk demod

Parameters

const struct drxk_config *config: pointer to struct drxk_config with demod configuration.
struct i2c_adapter *i2c: i2c adapter to use.

Return

FE pointer on success, NULL on failure.

struct dvb_frontend *dvb_pll_attach(struct dvb_frontend *fe, int pll_addr, struct i2c_adapter *i2c, unsigned int pll_desc_id)¶: Attach a dvb-pll to the supplied frontend structure.

Parameters

struct dvb_frontend *fe: Frontend to attach to.
int pll_addr: i2c address of the PLL (if used).
struct i2c_adapter *i2c: i2c adapter to use (set to NULL if not used).
unsigned int pll_desc_id: dvb_pll_desc to use.

Return

Frontend pointer on success, NULL on failure

struct helene_config¶: the configuration of ‘Helene’ tuner driver

Definition:

struct helene_config {
    u8 i2c_address;
    u8 xtal_freq_mhz;
    void *set_tuner_priv;
    int (*set_tuner_callback)(void *, int);
    enum helene_xtal xtal;
    struct dvb_frontend *fe;
};

Members

i2c_address: I2C address of the tuner
xtal_freq_mhz: Oscillator frequency, MHz
set_tuner_priv: Callback function private context
set_tuner_callback: Callback function that notifies the parent driver which tuner is active now
xtal: Cristal frequency as described by enum helene_xtal
fe: Frontend for which connects this tuner

struct dvb_frontend *helene_attach(struct dvb_frontend *fe, const struct helene_config *config, struct i2c_adapter *i2c)¶: Attach a helene tuner (terrestrial and cable standards)

Parameters

struct dvb_frontend *fe: frontend to be attached
const struct helene_config *config: pointer to struct helene_config with tuner configuration.
struct i2c_adapter *i2c: i2c adapter to use.

Return

FE pointer on success, NULL on failure.

struct dvb_frontend *helene_attach_s(struct dvb_frontend *fe, const struct helene_config *config, struct i2c_adapter *i2c)¶: Attach a helene tuner (satellite standards)

Parameters

struct dvb_frontend *fe: frontend to be attached
const struct helene_config *config: pointer to struct helene_config with tuner configuration.
struct i2c_adapter *i2c: i2c adapter to use.

Return

FE pointer on success, NULL on failure.

struct horus3a_config¶: the configuration of Horus3A tuner driver

Definition:

struct horus3a_config {
    u8 i2c_address;
    u8 xtal_freq_mhz;
    void *set_tuner_priv;
    int (*set_tuner_callback)(void *, int);
};

Members

i2c_address: I2C address of the tuner
xtal_freq_mhz: Oscillator frequency, MHz
set_tuner_priv: Callback function private context
set_tuner_callback: Callback function that notifies the parent driver which tuner is active now

struct dvb_frontend *horus3a_attach(struct dvb_frontend *fe, const struct horus3a_config *config, struct i2c_adapter *i2c)¶: Attach a horus3a tuner

Parameters

struct dvb_frontend *fe: frontend to be attached
const struct horus3a_config *config: pointer to struct helene_config with tuner configuration.
struct i2c_adapter *i2c: i2c adapter to use.

Return

FE pointer on success, NULL on failure.

struct ix2505v_config¶: ix2505 attachment configuration

Definition:

struct ix2505v_config {
    u8 tuner_address;
    u8 tuner_gain;
    u8 tuner_chargepump;
    int min_delay_ms;
    u8 tuner_write_only;
};

Members

tuner_address: tuner address
tuner_gain: Baseband AMP gain control 0/1=0dB(default) 2=-2bB 3=-4dB
tuner_chargepump: Charge pump output +/- 0=120 1=260 2=555 3=1200(default)
min_delay_ms: delay after tune
tuner_write_only: disables reads

struct dvb_frontend *ix2505v_attach(struct dvb_frontend *fe, const struct ix2505v_config *config, struct i2c_adapter *i2c)¶: Attach a ix2505v tuner to the supplied frontend structure.

Parameters

struct dvb_frontend *fe: Frontend to attach to.
const struct ix2505v_config *config: pointer to struct ix2505v_config
struct i2c_adapter *i2c: pointer to struct i2c_adapter.

Return

FE pointer on success, NULL on failure.

enum m88ds3103_ts_mode¶: TS connection mode

Constants

M88DS3103_TS_SERIAL: TS output pin D0, normal
M88DS3103_TS_SERIAL_D7: TS output pin D7
M88DS3103_TS_PARALLEL: TS Parallel mode
M88DS3103_TS_CI: TS CI Mode

enum m88ds3103_clock_out¶

Constants

M88DS3103_CLOCK_OUT_DISABLED: Clock output is disabled
M88DS3103_CLOCK_OUT_ENABLED: Clock output is enabled with crystal clock.
M88DS3103_CLOCK_OUT_ENABLED_DIV2: Clock output is enabled with half crystal clock.

struct m88ds3103_platform_data¶: Platform data for the m88ds3103 driver

Definition:

struct m88ds3103_platform_data {
    u32 clk;
    u16 i2c_wr_max;
    enum m88ds3103_ts_mode ts_mode;
    u32 ts_clk;
    enum m88ds3103_clock_out clk_out;
    u8 ts_clk_pol:1;
    u8 spec_inv:1;
    u8 agc;
    u8 agc_inv:1;
    u8 envelope_mode:1;
    u8 lnb_hv_pol:1;
    u8 lnb_en_pol:1;
    struct dvb_frontend* (*get_dvb_frontend)(struct i2c_client *);
    struct i2c_adapter* (*get_i2c_adapter)(struct i2c_client *);
};

Members

clk: Clock frequency.
i2c_wr_max: Max bytes I2C adapter can write at once.
ts_mode: TS mode.
ts_clk: TS clock (KHz).
clk_out: Clock output.
ts_clk_pol: TS clk polarity. 1-active at falling edge; 0-active at rising edge.
spec_inv: Input spectrum inversion.
agc: AGC configuration.
agc_inv: AGC polarity.
envelope_mode: DiSEqC envelope mode.
lnb_hv_pol: LNB H/V pin polarity. 0: pin high set to VOLTAGE_18, pin low to set VOLTAGE_13. 1: pin high set to VOLTAGE_13, pin low to set VOLTAGE_18.
lnb_en_pol: LNB enable pin polarity. 0: pin high to disable, pin low to enable. 1: pin high to enable, pin low to disable.
get_dvb_frontend: Get DVB frontend.
get_i2c_adapter: Get I2C adapter.

struct m88ds3103_config¶: m88ds3102 configuration

Definition:

struct m88ds3103_config {
    u8 i2c_addr;
    u32 clock;
    u16 i2c_wr_max;
    u8 ts_mode;
    u32 ts_clk;
    u8 ts_clk_pol:1;
    u8 spec_inv:1;
    u8 agc_inv:1;
    u8 clock_out;
    u8 envelope_mode:1;
    u8 agc;
    u8 lnb_hv_pol:1;
    u8 lnb_en_pol:1;
};

Members

i2c_addr: I2C address. Default: none, must set. Example: 0x68, ...
clock: Device’s clock. Default: none, must set. Example: 27000000
i2c_wr_max: Max bytes I2C provider is asked to write at once. Default: none, must set. Example: 33, 65, ...
ts_mode: TS output mode, as defined by enum m88ds3103_ts_mode. Default: M88DS3103_TS_SERIAL.
ts_clk: TS clk in KHz. Default: 0.
ts_clk_pol: TS clk polarity.Default: 0. 1-active at falling edge; 0-active at rising edge.
spec_inv: Spectrum inversion. Default: 0.
agc_inv: AGC polarity. Default: 0.
clock_out: Clock output, as defined by enum m88ds3103_clock_out. Default: M88DS3103_CLOCK_OUT_DISABLED.
envelope_mode: DiSEqC envelope mode. Default: 0.
agc: AGC configuration. Default: none, must set.
lnb_hv_pol: LNB H/V pin polarity. Default: 0. Values: 1: pin high set to VOLTAGE_13, pin low to set VOLTAGE_18; 0: pin high set to VOLTAGE_18, pin low to set VOLTAGE_13.
lnb_en_pol: LNB enable pin polarity. Default: 0. Values: 1: pin high to enable, pin low to disable; 0: pin high to disable, pin low to enable.

struct dvb_frontend *m88ds3103_attach(const struct m88ds3103_config *config, struct i2c_adapter *i2c, struct i2c_adapter **tuner_i2c)¶: Attach a m88ds3103 demod

Parameters

const struct m88ds3103_config *config: pointer to struct m88ds3103_config with demod configuration.
struct i2c_adapter *i2c: i2c adapter to use.
struct i2c_adapter **tuner_i2c: on success, returns the I2C adapter associated with m88ds3103 tuner.

Return

FE pointer on success, NULL on failure.

Note

Do not add new m88ds3103_attach() users! Use I2C bindings instead.

struct mb86a20s_config¶: Define the per-device attributes of the frontend

Definition:

struct mb86a20s_config {
    u32 fclk;
    u8 demod_address;
    bool is_serial;
};

Members

fclk: Clock frequency. If zero, assumes the default (32.57142 Mhz)
demod_address: the demodulator’s i2c address
is_serial: if true, TS is serial. Otherwise, TS is parallel

struct dvb_frontend *mb86a20s_attach(const struct mb86a20s_config *config, struct i2c_adapter *i2c)¶: Attach a mb86a20s demod

Parameters

const struct mb86a20s_config *config: pointer to struct mb86a20s_config with demod configuration.
struct i2c_adapter *i2c: i2c adapter to use.

Return

FE pointer on success, NULL on failure.

struct mn88472_config¶: Platform data for the mn88472 driver

Definition:

struct mn88472_config {
    unsigned int xtal;
#define MN88472_TS_MODE_SERIAL      0;
#define MN88472_TS_MODE_PARALLEL    1;
    int ts_mode;
#define MN88472_TS_CLK_FIXED        0;
#define MN88472_TS_CLK_VARIABLE     1;
    int ts_clock;
    u16 i2c_wr_max;
    struct dvb_frontend **fe;
    struct dvb_frontend* (*get_dvb_frontend)(struct i2c_client *);
};

Members

xtal: Clock frequency.
ts_mode: TS mode.
ts_clock: TS clock config.
i2c_wr_max: Max number of bytes driver writes to I2C at once.
fe: pointer to a frontend pointer
get_dvb_frontend: Get DVB frontend callback.

struct rtl2830_platform_data¶: Platform data for the rtl2830 driver

Definition:

struct rtl2830_platform_data {
    u32 clk;
    bool spec_inv;
    u8 vtop;
    u8 krf;
    u8 agc_targ_val;
    struct dvb_frontend* (*get_dvb_frontend)(struct i2c_client *);
    struct i2c_adapter* (*get_i2c_adapter)(struct i2c_client *);
    int (*pid_filter)(struct dvb_frontend *, u8, u16, int);
    int (*pid_filter_ctrl)(struct dvb_frontend *, int);
};

Members

clk: Clock frequency (4000000, 16000000, 25000000, 28800000).
spec_inv: Spectrum inversion.
vtop: AGC take-over point.
krf: AGC ratio.
agc_targ_val: AGC.
get_dvb_frontend: Get DVB frontend.
get_i2c_adapter: Get I2C adapter.
pid_filter: Set PID to PID filter.
pid_filter_ctrl: Control PID filter.

struct rtl2832_platform_data¶: Platform data for the rtl2832 driver

Definition:

struct rtl2832_platform_data {
    u32 clk;
#define RTL2832_TUNER_FC2580    0x21;
#define RTL2832_TUNER_TUA9001   0x24;
#define RTL2832_TUNER_FC0012    0x26;
#define RTL2832_TUNER_E4000     0x27;
#define RTL2832_TUNER_FC0013    0x29;
#define RTL2832_TUNER_R820T     0x2a;
#define RTL2832_TUNER_R828D     0x2b;
#define RTL2832_TUNER_SI2157    0x2c;
    u8 tuner;
    struct dvb_frontend* (*get_dvb_frontend)(struct i2c_client *);
    struct i2c_adapter* (*get_i2c_adapter)(struct i2c_client *);
    int (*slave_ts_ctrl)(struct i2c_client *, bool);
    int (*pid_filter)(struct dvb_frontend *, u8, u16, int);
    int (*pid_filter_ctrl)(struct dvb_frontend *, int);
};

Members

clk: Clock frequency (4000000, 16000000, 25000000, 28800000).
tuner: Used tuner model.
get_dvb_frontend: Get DVB frontend.
get_i2c_adapter: Get I2C adapter.
slave_ts_ctrl: Control slave TS interface.
pid_filter: Set PID to PID filter.
pid_filter_ctrl: Control PID filter.

struct rtl2832_sdr_platform_data¶: Platform data for the rtl2832_sdr driver

Definition:

struct rtl2832_sdr_platform_data {
    u32 clk;
#define RTL2832_SDR_TUNER_FC2580    0x21;
#define RTL2832_SDR_TUNER_TUA9001   0x24;
#define RTL2832_SDR_TUNER_FC0012    0x26;
#define RTL2832_SDR_TUNER_E4000     0x27;
#define RTL2832_SDR_TUNER_FC0013    0x29;
#define RTL2832_SDR_TUNER_R820T     0x2a;
#define RTL2832_SDR_TUNER_R828D     0x2b;
    u8 tuner;
    struct regmap *regmap;
    struct dvb_frontend *dvb_frontend;
    struct v4l2_subdev *v4l2_subdev;
    struct dvb_usb_device *dvb_usb_device;
};

Members

clk: Clock frequency (4000000, 16000000, 25000000, 28800000).
tuner: Used tuner model.
regmap: pointer to struct regmap.
dvb_frontend: rtl2832 DVB frontend.
v4l2_subdev: Tuner v4l2 controls.
dvb_usb_device: DVB USB interface for USB streaming.

struct dvb_frontend *stb6000_attach(struct dvb_frontend *fe, int addr, struct i2c_adapter *i2c)¶: Attach a stb6000 tuner to the supplied frontend structure.

Parameters

struct dvb_frontend *fe: Frontend to attach to.
int addr: i2c address of the tuner.
struct i2c_adapter *i2c: i2c adapter to use.

Return

FE pointer on success, NULL on failure.

struct tda10071_platform_data¶: Platform data for the tda10071 driver

Definition:

struct tda10071_platform_data {
    u32 clk;
    u16 i2c_wr_max;
#define TDA10071_TS_SERIAL        0;
#define TDA10071_TS_PARALLEL      1;
    u8 ts_mode;
    bool spec_inv;
    u8 pll_multiplier;
    u8 tuner_i2c_addr;
    struct dvb_frontend* (*get_dvb_frontend)(struct i2c_client *);
};

Members

clk: Clock frequency.
i2c_wr_max: Max bytes I2C adapter can write at once.
ts_mode: TS mode.
spec_inv: Input spectrum inversion.
pll_multiplier: PLL multiplier.
tuner_i2c_addr: CX24118A tuner I2C address (0x14, 0x54, ...).
get_dvb_frontend: Get DVB frontend.

struct dvb_frontend *tda826x_attach(struct dvb_frontend *fe, int addr, struct i2c_adapter *i2c, int has_loopthrough)¶: Attach a tda826x tuner to the supplied frontend structure.

Parameters

struct dvb_frontend *fe: Frontend to attach to.
int addr: i2c address of the tuner.
struct i2c_adapter *i2c: i2c adapter to use.
int has_loopthrough: Set to 1 if the card has a loopthrough RF connector.

Return

FE pointer on success, NULL on failure.

struct zd1301_demod_platform_data¶: Platform data for the zd1301_demod driver

Definition:

struct zd1301_demod_platform_data {
    void *reg_priv;
    int (*reg_read)(void *, u16, u8 *);
    int (*reg_write)(void *, u16, u8);
};

Members

reg_priv: First argument of reg_read and reg_write callbacks.
reg_read: Register read callback.
reg_write: Register write callback.

struct dvb_frontend *zd1301_demod_get_dvb_frontend(struct platform_device *pdev)¶: Get pointer to DVB frontend

Parameters

struct platform_device *pdev: Pointer to platform device

Return

Pointer to DVB frontend which given platform device owns.

struct i2c_adapter *zd1301_demod_get_i2c_adapter(struct platform_device *pdev)¶: Get pointer to I2C adapter

Parameters

struct platform_device *pdev: Pointer to platform device

Return

Pointer to I2C adapter which given platform device owns.

struct dvb_frontend *zl10036_attach(struct dvb_frontend *fe, const struct zl10036_config *config, struct i2c_adapter *i2c)¶: Attach a zl10036 tuner to the supplied frontend structure.

Parameters

struct dvb_frontend *fe: Frontend to attach to.
const struct zl10036_config *config: zl10036_config structure.
struct i2c_adapter *i2c: pointer to struct i2c_adapter.

Return

FE pointer on success, NULL on failure.

The Linux Kernel

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9.2.2. Frontend drivers¶

9.2.2.1. Frontend attach headers¶