text: /*
   * twl4030_madc.h - Header for TWL4030 MADC
   *
   * Copyright (C) 2011 Texas Instruments Incorporated - http://www.ti.com/
   * J Keerthy <j-keerthy@ti.com>
   *
   * This program is free software; you can redistribute it and/or
   * modify it under the terms of the GNU General Public License
   * version 2 as published by the Free Software Foundation.
   *
   * 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, write to the Free Software
   * Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA
   * 02110-1301 USA
   *
   */
  
  #ifndef _TWL4030_MADC_H
  #define _TWL4030_MADC_H
  
  struct twl4030_madc_conversion_method {
  	u8 sel;
  	u8 avg;
  	u8 rbase;
  	u8 ctrl;
  };
  
  #define TWL4030_MADC_MAX_CHANNELS 16
  
  /*
   * twl4030_madc_request- madc request packet for channel conversion
   * @channels:	16 bit bitmap for individual channels
   * @do_avgP:	sample the input channel for 4 consecutive cycles
   * @method:	RT, SW1, SW2
   * @type:	Polling or interrupt based method
   */
  
  struct twl4030_madc_request {
  	unsigned long channels;
  	u16 do_avg;
  	u16 method;
  	u16 type;
  	bool active;
  	bool result_pending;
  	int rbuf[TWL4030_MADC_MAX_CHANNELS];
  	void (*func_cb)(int len, int channels, int *buf);
  };
  
  enum conversion_methods {
  	TWL4030_MADC_RT,
  	TWL4030_MADC_SW1,
  	TWL4030_MADC_SW2,
  	TWL4030_MADC_NUM_METHODS
  };
  
  enum sample_type {
  	TWL4030_MADC_WAIT,
  	TWL4030_MADC_IRQ_ONESHOT,
  	TWL4030_MADC_IRQ_REARM
  };
  
  #define TWL4030_MADC_CTRL1		0x00
  #define TWL4030_MADC_CTRL2		0x01
  
  #define TWL4030_MADC_RTSELECT_LSB	0x02
  #define TWL4030_MADC_SW1SELECT_LSB	0x06
  #define TWL4030_MADC_SW2SELECT_LSB	0x0A
  
  #define TWL4030_MADC_RTAVERAGE_LSB	0x04
  #define TWL4030_MADC_SW1AVERAGE_LSB	0x08
  #define TWL4030_MADC_SW2AVERAGE_LSB	0x0C
  
  #define TWL4030_MADC_CTRL_SW1		0x12
  #define TWL4030_MADC_CTRL_SW2		0x13
  
  #define TWL4030_MADC_RTCH0_LSB		0x17
  #define TWL4030_MADC_GPCH0_LSB		0x37
  
  #define TWL4030_MADC_MADCON	(1 << 0)	/* MADC power on */
  #define TWL4030_MADC_BUSY	(1 << 0)	/* MADC busy */
  /* MADC conversion completion */
  #define TWL4030_MADC_EOC_SW	(1 << 1)
  /* MADC SWx start conversion */
  #define TWL4030_MADC_SW_START	(1 << 5)
  #define TWL4030_MADC_ADCIN0	(1 << 0)
  #define TWL4030_MADC_ADCIN1	(1 << 1)
  #define TWL4030_MADC_ADCIN2	(1 << 2)
  #define TWL4030_MADC_ADCIN3	(1 << 3)
  #define TWL4030_MADC_ADCIN4	(1 << 4)
  #define TWL4030_MADC_ADCIN5	(1 << 5)
  #define TWL4030_MADC_ADCIN6	(1 << 6)
  #define TWL4030_MADC_ADCIN7	(1 << 7)
  #define TWL4030_MADC_ADCIN8	(1 << 8)
  #define TWL4030_MADC_ADCIN9	(1 << 9)
  #define TWL4030_MADC_ADCIN10	(1 << 10)
  #define TWL4030_MADC_ADCIN11	(1 << 11)
  #define TWL4030_MADC_ADCIN12	(1 << 12)
  #define TWL4030_MADC_ADCIN13	(1 << 13)
  #define TWL4030_MADC_ADCIN14	(1 << 14)
  #define TWL4030_MADC_ADCIN15	(1 << 15)
  
  /* Fixed channels */
  #define TWL4030_MADC_BTEMP	TWL4030_MADC_ADCIN1
  #define TWL4030_MADC_VBUS	TWL4030_MADC_ADCIN8
  #define TWL4030_MADC_VBKB	TWL4030_MADC_ADCIN9
  #define TWL4030_MADC_ICHG	TWL4030_MADC_ADCIN10
  #define TWL4030_MADC_VCHG	TWL4030_MADC_ADCIN11
  #define TWL4030_MADC_VBAT	TWL4030_MADC_ADCIN12
  
  /* Step size and prescaler ratio */
  #define TEMP_STEP_SIZE          147
  #define TEMP_PSR_R              100
  #define CURR_STEP_SIZE		147
  #define CURR_PSR_R1		44
  #define CURR_PSR_R2		88
  
  #define TWL4030_BCI_BCICTL1	0x23
  #define TWL4030_BCI_CGAIN	0x020
  #define TWL4030_BCI_MESBAT	(1 << 1)
  #define TWL4030_BCI_TYPEN	(1 << 4)
  #define TWL4030_BCI_ITHEN	(1 << 3)
  
  #define REG_BCICTL2             0x024
  #define TWL4030_BCI_ITHSENS	0x007
  
  /* Register and bits for GPBR1 register */
  #define TWL4030_REG_GPBR1		0x0c
  #define TWL4030_GPBR1_MADC_HFCLK_EN	(1 << 7)
  
  struct twl4030_madc_user_parms {
  	int channel;
  	int average;
  	int status;
  	u16 result;
  };
  
  int twl4030_madc_conversion(struct twl4030_madc_request *conv);
  int twl4030_get_madc_conversion(int channel_no);
  #endif
  