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twl4030-madc.h
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/* * 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 * @raw: Return raw value, do not convert it */ struct twl4030_madc_request { unsigned long channels; bool do_avg; u16 method; u16 type; bool active; bool result_pending; bool raw; 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