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/* Copyright 2015 The ChromiumOS Authors
* Use of this source code is governed by a BSD-style license that can be
* found in the LICENSE file.
*/
/* G781 temperature sensor module for Chrome EC */
#ifndef __CROS_EC_TEMP_SENSOR_BD99992GW_H
#define __CROS_EC_TEMP_SENSOR_BD99992GW_H
#define BD99992GW_I2C_ADDR_FLAGS 0x30
/* ADC channels */
enum bd99992gw_adc_channel {
BD99992GW_ADC_CHANNEL_NONE = -1,
BD99992GW_ADC_CHANNEL_BATTERY = 0,
BD99992GW_ADC_CHANNEL_AC = 1,
BD99992GW_ADC_CHANNEL_SYSTHERM0 = 2,
BD99992GW_ADC_CHANNEL_SYSTHERM1 = 3,
BD99992GW_ADC_CHANNEL_SYSTHERM2 = 4,
BD99992GW_ADC_CHANNEL_SYSTHERM3 = 5,
BD99992GW_ADC_CHANNEL_DIE_TEMP = 6,
BD99992GW_ADC_CHANNEL_VDC = 7,
BD99992GW_ADC_CHANNEL_COUNT = 8,
};
/* Registers */
#define BD99992GW_REG_IRQLVL1 0x02
#define BD99992GW_IRQLVL1_ADC BIT(1) /* ADC IRQ asserted */
#define BD99992GW_REG_ADC1INT 0x03
#define BD99992GW_ADC1INT_RND BIT(0) /* RR cycle completed */
#define BD99992GW_REG_MADC1INT 0x0a
#define BD99992GW_MADC1INT_RND BIT(0) /* RR cycle mask */
#define BD99992GW_REG_IRQLVL1MSK 0x13
#define BD99992GW_IRQLVL1MSK_MADC BIT(1) /* ADC IRQ mask */
#define BD99992GW_REG_ADC1CNTL1 0x80
#define BD99992GW_ADC1CNTL1_SLP27MS (0x6 << 3) /* 27ms between pass */
#define BD99992GW_ADC1CNTL1_NOLOOP (0x7 << 3) /* Single loop pass only */
#define BD99992GW_ADC1CNTL1_ADPAUSE BIT(2) /* ADC pause */
#define BD99992GW_ADC1CNTL1_ADSTRT BIT(1) /* ADC start */
#define BD99992GW_ADC1CNTL1_ADEN BIT(0) /* ADC enable */
#define BD99992GW_REG_ADC1CNTL2 0x81
#define BD99992GW_ADC1CNTL2_ADCTHERM BIT(0) /* Enable ADC sequencing */
/* ADC1 Pointer file regs - assign to proper bd99992gw_adc_channel */
#define BD99992GW_ADC_POINTER_REG_COUNT 8
#define BD99992GW_REG_ADC1ADDR0 0x82
#define BD99992GW_REG_ADC1ADDR1 0x83
#define BD99992GW_REG_ADC1ADDR2 0x84
#define BD99992GW_REG_ADC1ADDR3 0x85
#define BD99992GW_REG_ADC1ADDR4 0x86
#define BD99992GW_REG_ADC1ADDR5 0x87
#define BD99992GW_REG_ADC1ADDR6 0x88
#define BD99992GW_REG_ADC1ADDR7 0x89
#define BD99992GW_ADC1ADDR_STOP BIT(3) /* Last conversion channel */
/* Result registers */
#define BD99992GW_REG_ADC1DATA0L 0x95
#define BD99992GW_REG_ADC1DATA0H 0x96
#define BD99992GW_REG_ADC1DATA1L 0x97
#define BD99992GW_REG_ADC1DATA1H 0x98
#define BD99992GW_REG_ADC1DATA2L 0x99
#define BD99992GW_REG_ADC1DATA2H 0x9a
#define BD99992GW_REG_ADC1DATA3L 0x9b
#define BD99992GW_REG_ADC1DATA3H 0x9c
#define BD99992GW_REG_ADC1DATA4L 0x9d
#define BD99992GW_REG_ADC1DATA4H 0x9e
#define BD99992GW_REG_ADC1DATA5L 0x9f
#define BD99992GW_REG_ADC1DATA5H 0xa0
#define BD99992GW_REG_ADC1DATA6L 0xa1
#define BD99992GW_REG_ADC1DATA6H 0xa2
#define BD99992GW_REG_ADC1DATA7L 0xa3
#define BD99992GW_REG_ADC1DATA7H 0xa4
/**
* Get the latest value from the sensor.
*
* @param idx ADC channel to read.
* @param temp_ptr Destination for temperature in K.
*
* @return EC_SUCCESS if successful, non-zero if error.
*/
int bd99992gw_get_val(int idx, int *temp_ptr);
#endif /* __CROS_EC_TEMP_SENSOR_BD99992GW_H */
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