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Diffstat (limited to 'include/soc/sprd/adc.h')
| -rw-r--r-- | include/soc/sprd/adc.h | 144 |
1 files changed, 144 insertions, 0 deletions
diff --git a/include/soc/sprd/adc.h b/include/soc/sprd/adc.h new file mode 100644 index 00000000..46473272 --- /dev/null +++ b/include/soc/sprd/adc.h @@ -0,0 +1,144 @@ +/* + * Copyright (C) 2012 Spreadtrum Communications Inc. + * + * This software is licensed under the terms of the GNU General Public + * License version 2, as published by the Free Software Foundation, and + * may be copied, distributed, and modified under those terms. + * + * 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. + * + ************************************************ + * Automatically generated C config: don't edit * + ************************************************ + */ + +#ifndef __CTL_ADC_H__ +#define __CTL_ADC_H__ + +/* adc channel definition */ +#define ADC_CHANNEL_INVALID -1 +enum adc_channel { + ADC_CHANNEL_0 = 0, //ADCI0 + ADC_CHANNEL_1 = 1, //ADCI1 + ADC_CHANNEL_2 = 2, //ADCI2 + ADC_CHANNEL_3 = 3, //ADCI3 + ADC_CHANNEL_PROG = 4, + ADC_CHANNEL_VBAT = 5, + ADC_CHANNEL_VCHGSEN = 6, + ADC_CHANNEL_VCHGBG = 7, + ADC_CHANNEL_ISENSE = 8, + ADC_CHANNEL_TPYD = 9, + ADC_CHANNEL_TPYU = 10, + ADC_CHANNEL_TPXR = 11, + ADC_CHANNEL_TPXL = 12, + ADC_CHANNEL_DCDCCORE = 13, + ADC_CHANNEL_DCDCARM = 14, + ADC_CHANNEL_DCDCMEM = 15, + ADC_CHANNEL_DCDCLDO = 16, +#if defined(CONFIG_ARCH_SC8825) + ADC_CHANNEL_VBATBK = 17, + ADC_CHANNEL_HEADMIC = 18, + ADC_CHANNEL_LDO0 = 19, /* ldo rf/abb/cama */ + ADC_CHANNEL_LDO1 = 20, /* ldo v3v/v28/vsim0/vsim1/cammot/sd0/usb/dvdd18/v25 */ + ADC_CHANNEL_LDO2 = 21, /* ldo camio/camcore/cmmb1v2/cmmb1v8/v18/sd1/sd3/ */ + ADC_MAX = 21, +#elif defined(CONFIG_ARCH_SCX35) + ADC_CHANNEL_DCDCGPU = 17, + ADC_CHANNEL_DCDCWRF = 18, + ADC_CHANNEL_VBATBK = 19, + ADC_CHANNEL_HEADMIC = 20, + ADC_CHANNEL_LDO0 = 21, + ADC_CHANNEL_LDO1 = 22, + ADC_CHANNEL_LDO2 = 23, + ADC_CHANNEL_WHTLED = 24, + ADC_CHANNEL_OTP = 25, + ADC_CHANNEL_LPLDO0 = 26, /*SIM0/SIM1/SIM2/EMMCCORE/VDD28/VDD25/USB, Low power mode reference*/ + ADC_CHANNEL_LPLDO1 = 27, /*CAMD/EMMCIO/VDD18/AVDD18/CAMIO/CLSG, Low power mode reference*/ + ADC_CHANNEL_LPLDO2 = 28, /*RF0/RF1/RF2/CAMA/SD/CAMMOT, Low power mode reference*/ + ADC_CHANNEL_WHTLED_VFB = 29, + ADC_CHANNEL_USBDP = 30, + ADC_CHANNEL_USBDM = 31, + ADC_MAX = 31, +#endif +}; + +struct adc_sample_data { + int sample_num; /* from 1 to 15 */ + int sample_bits; /*0: 10bits mode, 1:12 bits mode */ + int signal_mode; /*0:resistance,1:capacitance */ + int sample_speed; /*0:quick mode, 1: slow mode */ + int scale; /*0:little scale, 1:big scale */ + int hw_channel_delay; /*0:disable, 1:enable */ + int channel_id; /*channel id of software, Or dedicatid hw channel number */ + int channel_type; /*0: software, 1: slow hardware , 2: fast hardware */ + int *pbuf; +}; + +void sci_adc_init(void); +void sci_adc_dump_register(void); + +/* +* Use this interface to get adc values and you can config adc sample behavior. +* The max number adc value is 16 now, Pls notice the return value; +*/ +int sci_adc_get_values(struct adc_sample_data *adc); + +/* + * get adc channel voltage divider ratio. + */ +void sci_adc_get_vol_ratio(unsigned int channel_id, int scale, unsigned int* div_numerators, + unsigned int* div_denominators ); + +/* + * get mux adc channel voltage divider ratio. + */ +unsigned int sci_adc_get_ratio(unsigned int channel_id, int scale, int mux); + + +/* + * Use this interface to get one adc value and this function have set default + * adc sample behavior. + */ +static inline int sci_adc_get_value(unsigned int channel, int scale) +{ + struct adc_sample_data adc; + int32_t result[1]; + + adc.channel_id = channel; + adc.channel_type = 0; + adc.hw_channel_delay = 0; + adc.pbuf = &result[0]; + adc.sample_bits = 1; + adc.sample_num = 1; + adc.sample_speed = 0; + adc.scale = scale; + adc.signal_mode = 0; + + if (0 != sci_adc_get_values(&adc)) { + printk("sci_adc_get_value, return error\n"); + sci_adc_dump_register(); + BUG(); + } + + return result[0]; +} + +/* + * get adc channel raw data + */ +int sci_get_adc_data(unsigned int channel, unsigned int scale); + +/* + * get adc channel voltage + */ +int sci_adc_vol_request(unsigned int channel, int scale, int mux, int* adc_data); + +/* + * Use this interface to get adc value by current sense + */ +int sci_adc_get_value_by_isen(unsigned int channel, int scale, int isen); + +#endif |