drivers/media/dvb-frontends/m88ds3103.h

   1 /*
   2  * Montage Technology M88DS3103/M88RS6000 demodulator driver
   3  *
   4  * Copyright (C) 2013 Antti Palosaari <crope@iki.fi>
   5  *
   6  *    This program is free software; you can redistribute it and/or modify
   7  *    it under the terms of the GNU General Public License as published by
   8  *    the Free Software Foundation; either version 2 of the License, or
   9  *    (at your option) any later version.
  10  *
  11  *    This program is distributed in the hope that it will be useful,
  12  *    but WITHOUT ANY WARRANTY; without even the implied warranty of
  13  *    MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
  14  *    GNU General Public License for more details.
  15  */
  16
  17 #ifndef M88DS3103_H
  18 #define M88DS3103_H
  19
  20 #include <linux/dvb/frontend.h>
  21
  22 /*
  23  * I2C address
  24  * 0x68,
  25  */
  26
  27 /**
  28  * enum m88ds3103_ts_mode - TS connection mode
  29  * @M88DS3103_TS_SERIAL:        TS output pin D0, normal
  30  * @M88DS3103_TS_SERIAL_D7:     TS output pin D7
  31  * @M88DS3103_TS_PARALLEL:      TS Parallel mode
  32  * @M88DS3103_TS_CI:            TS CI Mode
  33  */
  34 enum m88ds3103_ts_mode {
  35         M88DS3103_TS_SERIAL,
  36         M88DS3103_TS_SERIAL_D7,
  37         M88DS3103_TS_PARALLEL,
  38         M88DS3103_TS_CI
  39 };
  40
  41 /**
  42  * enum m88ds3103_clock_out
  43  * @M88DS3103_CLOCK_OUT_DISABLED:       Clock output is disabled
  44  * @M88DS3103_CLOCK_OUT_ENABLED:        Clock output is enabled with crystal
  45  *                                      clock.
  46  * @M88DS3103_CLOCK_OUT_ENABLED_DIV2:   Clock output is enabled with half
  47  *                                      crystal clock.
  48  */
  49 enum m88ds3103_clock_out {
  50         M88DS3103_CLOCK_OUT_DISABLED,
  51         M88DS3103_CLOCK_OUT_ENABLED,
  52         M88DS3103_CLOCK_OUT_ENABLED_DIV2
  53 };
  54
  55 /**
  56  * struct m88ds3103_platform_data - Platform data for the m88ds3103 driver
  57  * @clk: Clock frequency.
  58  * @i2c_wr_max: Max bytes I2C adapter can write at once.
  59  * @ts_mode: TS mode.
  60  * @ts_clk: TS clock (KHz).
  61  * @ts_clk_pol: TS clk polarity. 1-active at falling edge; 0-active at rising
  62  *  edge.
  63  * @spec_inv: Input spectrum inversion.
  64  * @agc: AGC configuration.
  65  * @agc_inv: AGC polarity.
  66  * @clk_out: Clock output.
  67  * @envelope_mode: DiSEqC envelope mode.
  68  * @lnb_hv_pol: LNB H/V pin polarity. 0: pin high set to VOLTAGE_18, pin low to
  69  *  set VOLTAGE_13. 1: pin high set to VOLTAGE_13, pin low to set VOLTAGE_18.
  70  * @lnb_en_pol: LNB enable pin polarity. 0: pin high to disable, pin low to
  71  *  enable. 1: pin high to enable, pin low to disable.
  72  * @get_dvb_frontend: Get DVB frontend.
  73  * @get_i2c_adapter: Get I2C adapter.
  74  */
  75 struct m88ds3103_platform_data {
  76         u32 clk;
  77         u16 i2c_wr_max;
  78         enum m88ds3103_ts_mode ts_mode;
  79         u32 ts_clk;
  80         enum m88ds3103_clock_out clk_out;
  81         u8 ts_clk_pol:1;
  82         u8 spec_inv:1;
  83         u8 agc;
  84         u8 agc_inv:1;
  85         u8 envelope_mode:1;
  86         u8 lnb_hv_pol:1;
  87         u8 lnb_en_pol:1;
  88
  89         struct dvb_frontend* (*get_dvb_frontend)(struct i2c_client *);
  90         struct i2c_adapter* (*get_i2c_adapter)(struct i2c_client *);
  91
  92 /* private: For legacy media attach wrapper. Do not set value. */
  93         u8 attach_in_use:1;
  94 };
  95
  96 /**
  97  * struct m88ds3103_config - m88ds3102 configuration
  98  *
  99  * @i2c_addr:   I2C address. Default: none, must set. Example: 0x68, ...
 100  * @clock:      Device's clock. Default: none, must set. Example: 27000000
 101  * @i2c_wr_max: Max bytes I2C provider is asked to write at once.
 102  *              Default: none, must set. Example: 33, 65, ...
 103  * @ts_mode:    TS output mode, as defined by &enum m88ds3103_ts_mode.
 104  *              Default: M88DS3103_TS_SERIAL.
 105  * @ts_clk:     TS clk in KHz. Default: 0.
 106  * @ts_clk_pol: TS clk polarity.Default: 0.
 107  *              1-active at falling edge; 0-active at rising edge.
 108  * @spec_inv:   Spectrum inversion. Default: 0.
 109  * @agc_inv:    AGC polarity. Default: 0.
 110  * @clock_out:  Clock output, as defined by &enum m88ds3103_clock_out.
 111  *              Default: M88DS3103_CLOCK_OUT_DISABLED.
 112  * @envelope_mode: DiSEqC envelope mode. Default: 0.
 113  * @agc:        AGC configuration. Default: none, must set.
 114  * @lnb_hv_pol: LNB H/V pin polarity. Default: 0. Values:
 115  *              1: pin high set to VOLTAGE_13, pin low to set VOLTAGE_18;
 116  *              0: pin high set to VOLTAGE_18, pin low to set VOLTAGE_13.
 117  * @lnb_en_pol: LNB enable pin polarity. Default: 0. Values:
 118  *              1: pin high to enable, pin low to disable;
 119  *              0: pin high to disable, pin low to enable.
 120  */
 121 struct m88ds3103_config {
 122         u8 i2c_addr;
 123         u32 clock;
 124         u16 i2c_wr_max;
 125         u8 ts_mode;
 126         u32 ts_clk;
 127         u8 ts_clk_pol:1;
 128         u8 spec_inv:1;
 129         u8 agc_inv:1;
 130         u8 clock_out;
 131         u8 envelope_mode:1;
 132         u8 agc;
 133         u8 lnb_hv_pol:1;
 134         u8 lnb_en_pol:1;
 135 };
 136
 137 #if defined(CONFIG_DVB_M88DS3103) || \
 138                 (defined(CONFIG_DVB_M88DS3103_MODULE) && defined(MODULE))
 139 /**
 140  * Attach a m88ds3103 demod
 141  *
 142  * @config: pointer to &struct m88ds3103_config with demod configuration.
 143  * @i2c: i2c adapter to use.
 144  * @tuner_i2c: on success, returns the I2C adapter associated with
 145  *              m88ds3103 tuner.
 146  *
 147  * return: FE pointer on success, NULL on failure.
 148  * Note: Do not add new m88ds3103_attach() users! Use I2C bindings instead.
 149  */
 150 extern struct dvb_frontend *m88ds3103_attach(
 151                 const struct m88ds3103_config *config,
 152                 struct i2c_adapter *i2c,
 153                 struct i2c_adapter **tuner_i2c);
 154 extern int m88ds3103_get_agc_pwm(struct dvb_frontend *fe, u8 *_agc_pwm);
 155 #else
 156 static inline struct dvb_frontend *m88ds3103_attach(
 157                 const struct m88ds3103_config *config,
 158                 struct i2c_adapter *i2c,
 159                 struct i2c_adapter **tuner_i2c)
 160 {
 161         pr_warn("%s: driver disabled by Kconfig\n", __func__);
 162         return NULL;
 163 }
 164 #define m88ds3103_get_agc_pwm NULL
 165 #endif
 166
 167 #endif