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/*
* include/linux/i2c/twl6030-gpadc.h
*
* TWL6030 GPADC module driver header
*
* Copyright (C) 2009 Texas Instruments Inc.
* Nishant Kamat <nskamat@ti.com>
*
* Based on twl4030-madc.h
* Copyright (C) 2008 Nokia Corporation
* Mikko Ylinen <mikko.k.ylinen@nokia.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 _TWL6030_GPADC_H
#define _TWL6030_GPADC_H
struct twl6030_gpadc_conversion_method {
u8 sel;
u8 rbase;
u8 ctrl;
u8 enable;
u8 mask;
};
#define TWL6030_GPADC_MAX_CHANNELS 17
#define TWL6032_GPADC_MAX_CHANNELS 19
/* Define this as the biggest of all chips using this driver */
#define GPADC_MAX_CHANNELS TWL6032_GPADC_MAX_CHANNELS
/*
* raw_code - raw adc value
* raw_channel_value - adc * channel gain
* code - calibrated adc value
*/
struct twl6030_value {
int raw_code;
int raw_channel_value;
int code;
};
struct twl6030_gpadc_request {
u32 channels;
u16 do_avg;
u16 method;
u16 type;
int active;
int result_pending;
int rbuf[TWL6032_GPADC_MAX_CHANNELS];
void (*func_cb)(struct twl6030_gpadc_request *req);
struct twl6030_value buf[TWL6032_GPADC_MAX_CHANNELS];
};
enum conversion_methods {
TWL6030_GPADC_RT,
TWL6030_GPADC_SW2,
TWL6030_GPADC_NUM_METHODS
};
enum sample_type {
TWL6030_GPADC_WAIT,
TWL6030_GPADC_IRQ_ONESHOT,
TWL6030_GPADC_IRQ_REARM
};
#define TWL6030_GPADC_CTRL 0x00 /* 0x2e */
#define TWL6030_GPADC_CTRL2 0x01 /* 0x2f */
#define TWL6030_GPADC_RTSELECT_LSB 0x02 /* 0x30 */
#define TWL6030_GPADC_RTSELECT_ISB 0x03
#define TWL6030_GPADC_RTSELECT_MSB 0x04
#define TWL6032_GPADC_RTSELECT_LSB 0x04 /* 0x32 */
#define TWL6032_GPADC_RTSELECT_ISB 0x05
#define TWL6032_GPADC_RTSELECT_MSB 0x06
#define TWL6030_GPADC_CTRL_P1 0x05
#define TWL6030_GPADC_CTRL_P2 0x06
#define TWL6032_GPADC_GPSELECT_ISB 0x07
#define TWL6032_GPADC_CTRL_P1 0x08
#define TWL6032_RTCH0_LSB 0x09
#define TWL6032_RTCH0_MSB 0x0a
#define TWL6032_RTCH1_LSB 0x0b
#define TWL6032_RTCH1_MSB 0x0c
#define TWL6032_GPCH0_LSB 0x0d
#define TWL6032_GPCH0_MSB 0x0e
#define TWL6030_GPADC_CTRL_P1_SP1 (1 << 3)
#define TWL6030_GPADC_CTRL_P1_EOCRT (1 << 2)
#define TWL6030_GPADC_CTRL_P1_EOCP1 (1 << 1)
#define TWL6030_GPADC_CTRL_P1_BUSY (1 << 0)
#define TWL6030_GPADC_CTRL_P2_SP2 (1 << 2)
#define TWL6030_GPADC_CTRL_P2_EOCP2 (1 << 1)
#define TWL6030_GPADC_CTRL_P1_BUSY (1 << 0)
#define TWL6030_GPADC_EOC_SW (1 << 1)
#define TWL6030_GPADC_BUSY (1 << 0)
#define TWL6030_GPADC_RTCH0_LSB (0x07)
#define TWL6030_GPADC_GPCH0_LSB (0x29)
/* Fixed channels */
#define TWL6030_GPADC_CTRL_TEMP1_EN (1 << 0) /* input ch 1 */
#define TWL6030_GPADC_CTRL_TEMP2_EN (1 << 1) /* input ch 4 */
#define TWL6030_GPADC_CTRL_SCALER_EN (1 << 2) /* input ch 2 */
#define TWL6030_GPADC_CTRL_SCALER_DIV4 (1 << 3)
#define TWL6030_GPADC_CTRL_SCALER_EN_CH11 (1 << 4) /* input ch 11 */
#define TWL6030_GPADC_CTRL_TEMP1_EN_MONITOR (1 << 5)
#define TWL6030_GPADC_CTRL_TEMP2_EN_MONITOR (1 << 6)
#define TWL6030_GPADC_CTRL_ISOURCE_EN (1 << 7)
#define TWL6030_GPADC_CTRL2_REMSENSE_0 (1 << 0)
#define TWL6030_GPADC_CTRL2_REMSENSE_1 (1 << 1)
#define TWL6030_GPADC_CTRL2_SCALER_EN_CH18 (1 << 2)
#define TWL6030_GPADC_CTRL2_VBAT_SCALER_DIV4 (1 << 3)
#define TWL6030_GPADC_RT_SW1_EOC_MASK (1 << 5)
#define TWL6030_GPADC_SW2_EOC_MASK (1 << 6)
#define TWL6032_GPADC_RT_EOC_MASK (1 << 4)
#define TWL6032_GPADC_SW_EOC_MASK (1 << 5)
#define TWL6030_GPADC_IOC_MAGIC '`'
#define TWL6030_GPADC_IOCX_ADC_RAW_READ _IO(TWL6030_GPADC_IOC_MAGIC, 0)
#define TWL6030_GPADC_IOCX_ADC_READ _IO(TWL6030_GPADC_IOC_MAGIC+1, 0)
struct twl6030_gpadc_user_parms {
int channel;
int status;
u16 result;
};
int twl6030_gpadc_conversion(struct twl6030_gpadc_request *conv);
#endif
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