#ifndef _E4K_TUNER_H
  #define _E4K_TUNER_H
  
  /*
   * Elonics E4000 tuner driver
   *
   * (C) 2011-2012 by Harald Welte <laforge@gnumonks.org>
   * (C) 2012 by Sylvain Munaut <tnt@246tNt.com>
   * (C) 2012 by Hoernchen <la@tfc-server.de>
   *
   * All Rights Reserved
   *
   * This program is free software; you can redistribute it and/or modify
   * it under the terms of the GNU General Public License as published by
   * the Free Software Foundation; either version 2 of the License, or
   * (at your option) any later version.
   *
   * This program is distributed in the hope that it will be useful,
   * but WITHOUT ANY WARRANTY; without even the implied warranty of
   * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
   * GNU General Public License for more details.
   *
   * You should have received a copy of the GNU General Public License
   * along with this program.  If not, see <http://www.gnu.org/licenses/>.
   */
  
  #define E4K_I2C_ADDR	0xc8
  #define E4K_CHECK_ADDR	0x02
  #define E4K_CHECK_VAL	0x40
  
  enum e4k_reg {
  	E4K_REG_MASTER1		= 0x00,
  	E4K_REG_MASTER2		= 0x01,
  	E4K_REG_MASTER3		= 0x02,
  	E4K_REG_MASTER4		= 0x03,
  	E4K_REG_MASTER5		= 0x04,
  	E4K_REG_CLK_INP		= 0x05,
  	E4K_REG_REF_CLK		= 0x06,
  	E4K_REG_SYNTH1		= 0x07,
  	E4K_REG_SYNTH2		= 0x08,
  	E4K_REG_SYNTH3		= 0x09,
  	E4K_REG_SYNTH4		= 0x0a,
  	E4K_REG_SYNTH5		= 0x0b,
  	E4K_REG_SYNTH6		= 0x0c,
  	E4K_REG_SYNTH7		= 0x0d,
  	E4K_REG_SYNTH8		= 0x0e,
  	E4K_REG_SYNTH9		= 0x0f,
  	E4K_REG_FILT1		= 0x10,
  	E4K_REG_FILT2		= 0x11,
  	E4K_REG_FILT3		= 0x12,
  	// gap
  	E4K_REG_GAIN1		= 0x14,
  	E4K_REG_GAIN2		= 0x15,
  	E4K_REG_GAIN3		= 0x16,
  	E4K_REG_GAIN4		= 0x17,
  	// gap
  	E4K_REG_AGC1		= 0x1a,
  	E4K_REG_AGC2		= 0x1b,
  	E4K_REG_AGC3		= 0x1c,
  	E4K_REG_AGC4		= 0x1d,
  	E4K_REG_AGC5		= 0x1e,
  	E4K_REG_AGC6		= 0x1f,
  	E4K_REG_AGC7		= 0x20,
  	E4K_REG_AGC8		= 0x21,
  	// gap
  	E4K_REG_AGC11		= 0x24,
  	E4K_REG_AGC12		= 0x25,
  	// gap
  	E4K_REG_DC1		= 0x29,
  	E4K_REG_DC2		= 0x2a,
  	E4K_REG_DC3		= 0x2b,
  	E4K_REG_DC4		= 0x2c,
  	E4K_REG_DC5		= 0x2d,
  	E4K_REG_DC6		= 0x2e,
  	E4K_REG_DC7		= 0x2f,
  	E4K_REG_DC8		= 0x30,
  	// gap
  	E4K_REG_QLUT0		= 0x50,
  	E4K_REG_QLUT1		= 0x51,
  	E4K_REG_QLUT2		= 0x52,
  	E4K_REG_QLUT3		= 0x53,
  	// gap
  	E4K_REG_ILUT0		= 0x60,
  	E4K_REG_ILUT1		= 0x61,
  	E4K_REG_ILUT2		= 0x62,
  	E4K_REG_ILUT3		= 0x63,
  	// gap
  	E4K_REG_DCTIME1		= 0x70,
  	E4K_REG_DCTIME2		= 0x71,
  	E4K_REG_DCTIME3		= 0x72,
  	E4K_REG_DCTIME4		= 0x73,
  	E4K_REG_PWM1		= 0x74,
  	E4K_REG_PWM2		= 0x75,
  	E4K_REG_PWM3		= 0x76,
  	E4K_REG_PWM4		= 0x77,
  	E4K_REG_BIAS		= 0x78,
  	E4K_REG_CLKOUT_PWDN	= 0x7a,
  	E4K_REG_CHFILT_CALIB	= 0x7b,
  	E4K_REG_I2C_REG_ADDR	= 0x7d,
  	// FIXME
  };
  
  #define E4K_MASTER1_RESET	(1 << 0)
  #define E4K_MASTER1_NORM_STBY	(1 << 1)
  #define E4K_MASTER1_POR_DET	(1 << 2)
  
  #define E4K_SYNTH1_PLL_LOCK	(1 << 0)
  #define E4K_SYNTH1_BAND_SHIF	1
  
  #define E4K_SYNTH7_3PHASE_EN	(1 << 3)
  
  #define E4K_SYNTH8_VCOCAL_UPD	(1 << 2)
  
  #define E4K_FILT3_DISABLE	(1 << 5)
  
  #define E4K_AGC1_LIN_MODE	(1 << 4)
  #define E4K_AGC1_LNA_UPDATE	(1 << 5)
  #define E4K_AGC1_LNA_G_LOW	(1 << 6)
  #define E4K_AGC1_LNA_G_HIGH	(1 << 7)
  
  #define E4K_AGC6_LNA_CAL_REQ	(1 << 4)
  
  #define E4K_AGC7_MIX_GAIN_AUTO	(1 << 0)
  #define E4K_AGC7_GAIN_STEP_5dB	(1 << 5)
  
  #define E4K_AGC8_SENS_LIN_AUTO	(1 << 0)
  
  #define E4K_AGC11_LNA_GAIN_ENH	(1 << 0)
  
  #define E4K_DC1_CAL_REQ		(1 << 0)
  
  #define E4K_DC5_I_LUT_EN	(1 << 0)
  #define E4K_DC5_Q_LUT_EN	(1 << 1)
  #define E4K_DC5_RANGE_DET_EN	(1 << 2)
  #define E4K_DC5_RANGE_EN	(1 << 3)
  #define E4K_DC5_TIMEVAR_EN	(1 << 4)
  
  #define E4K_CLKOUT_DISABLE	0x96
  
  #define E4K_CHFCALIB_CMD	(1 << 0)
  
  #define E4K_AGC1_MOD_MASK	0xF
  
  enum e4k_agc_mode {
  	E4K_AGC_MOD_SERIAL		= 0x0,
  	E4K_AGC_MOD_IF_PWM_LNA_SERIAL	= 0x1,
  	E4K_AGC_MOD_IF_PWM_LNA_AUTONL	= 0x2,
  	E4K_AGC_MOD_IF_PWM_LNA_SUPERV	= 0x3,
  	E4K_AGC_MOD_IF_SERIAL_LNA_PWM	= 0x4,
  	E4K_AGC_MOD_IF_PWM_LNA_PWM	= 0x5,
  	E4K_AGC_MOD_IF_DIG_LNA_SERIAL	= 0x6,
  	E4K_AGC_MOD_IF_DIG_LNA_AUTON	= 0x7,
  	E4K_AGC_MOD_IF_DIG_LNA_SUPERV	= 0x8,
  	E4K_AGC_MOD_IF_SERIAL_LNA_AUTON	= 0x9,
  	E4K_AGC_MOD_IF_SERIAL_LNA_SUPERV = 0xa,
  };
  
  enum e4k_band {
  	E4K_BAND_VHF2	= 0,
  	E4K_BAND_VHF3	= 1,
  	E4K_BAND_UHF	= 2,
  	E4K_BAND_L	= 3,
  };
  
  enum e4k_mixer_filter_bw {
  	E4K_F_MIX_BW_27M	= 0,
  	E4K_F_MIX_BW_4M6	= 8,
  	E4K_F_MIX_BW_4M2	= 9,
  	E4K_F_MIX_BW_3M8	= 10,
  	E4K_F_MIX_BW_3M4	= 11,
  	E4K_F_MIX_BW_3M		= 12,
  	E4K_F_MIX_BW_2M7	= 13,
  	E4K_F_MIX_BW_2M3	= 14,
  	E4K_F_MIX_BW_1M9	= 15,
  };
  
  enum e4k_if_filter {
  	E4K_IF_FILTER_MIX,
  	E4K_IF_FILTER_CHAN,
  	E4K_IF_FILTER_RC
  };
  struct e4k_pll_params {
  	uint32_t fosc;
  	uint32_t intended_flo;
  	uint32_t flo;
  	uint16_t x;
  	uint8_t z;
  	uint8_t r;
  	uint8_t r_idx;
  	uint8_t threephase;
  };
  
  struct e4k_state {
  	void *i2c_dev;
  	uint8_t i2c_addr;
  	enum e4k_band band;
  	struct e4k_pll_params vco;
  	void *rtl_dev;
  };
  
  int e4k_init(struct e4k_state *e4k);
  int e4k_standby(struct e4k_state *e4k, int enable);
  int e4k_if_gain_set(struct e4k_state *e4k, uint8_t stage, int8_t value);
  int e4k_mixer_gain_set(struct e4k_state *e4k, int8_t value);
  int e4k_commonmode_set(struct e4k_state *e4k, int8_t value);
  int e4k_tune_freq(struct e4k_state *e4k, uint32_t freq);
  int e4k_tune_params(struct e4k_state *e4k, struct e4k_pll_params *p);
  uint32_t e4k_compute_pll_params(struct e4k_pll_params *oscp, uint32_t fosc, uint32_t intended_flo);
  int e4k_if_filter_bw_get(struct e4k_state *e4k, enum e4k_if_filter filter);
  int e4k_if_filter_bw_set(struct e4k_state *e4k, enum e4k_if_filter filter,
  		         uint32_t bandwidth);
  int e4k_if_filter_chan_enable(struct e4k_state *e4k, int on);
  int e4k_rf_filter_set(struct e4k_state *e4k);
  
  int e4k_manual_dc_offset(struct e4k_state *e4k, int8_t iofs, int8_t irange, int8_t qofs, int8_t qrange);
  int e4k_dc_offset_calibrate(struct e4k_state *e4k);
  int e4k_dc_offset_gen_table(struct e4k_state *e4k);
  
  int e4k_set_lna_gain(struct e4k_state *e4k, int32_t gain);
  int e4k_enable_manual_gain(struct e4k_state *e4k, uint8_t manual);
  int e4k_set_enh_gain(struct e4k_state *e4k, int32_t gain);
  #endif /* _E4K_TUNER_H */