zephyr/drivers/adc/adc_ti_adc108s102.h

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/* adc-ti-adc108s102.h - Private */
/*
* Copyright (c) 2015 Intel Corporation
*
* Licensed under the Apache License, Version 2.0 (the "License");
* you may not use this file except in compliance with the License.
* You may obtain a copy of the License at
*
* http://www.apache.org/licenses/LICENSE-2.0
*
* Unless required by applicable law or agreed to in writing, software
* distributed under the License is distributed on an "AS IS" BASIS,
* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
* See the License for the specific language governing permissions and
* limitations under the License.
*/
#ifndef __ADC108S102_PRIV_H__
#define __ADC108S102_PRIV_H__
#include <spi.h>
#include <adc.h>
#include <misc/byteorder.h>
#ifdef __cplusplus
extern "C" {
#endif
/* Internal return code */
#define ADC108S102_DONE (-1)
/* 8 chans maximum + 1 dummy, 16 bits per-chans -> 18 bytes */
#define ADC108S102_CMD_BUFFER_SIZE 9
/* 1 dummy + 8 results maximum, 16 bits per-chans -> 18 bytes */
#define ADC108S102_SAMPLING_BUFFER_SIZE 9
#define ADC108S102_CHANNELS 8
#define ADC108S102_CHANNELS_SIZE \
(ADC108S102_CHANNELS * sizeof(uint32_t))
#define ADC108S102_CHANNEL_CMD(_channel_) \
sys_cpu_to_be16((_channel_ << 8) << 3)
#define ADC108S102_RESULT_MASK 0xfff /* 12 bits resolution */
#define ADC108S102_RESULT(_res_) \
(sys_be16_to_cpu(_res_) & ADC108S102_RESULT_MASK)
struct ti_adc108s102_config {
const char *spi_port;
uint32_t spi_config_flags;
uint32_t spi_freq;
uint32_t spi_slave;
};
struct ti_adc108s102_chan {
uint32_t buf_idx;
};
struct ti_adc108s102_data {
uint16_t cmd_buffer[ADC108S102_CMD_BUFFER_SIZE];
uint16_t sampling_buffer[ADC108S102_SAMPLING_BUFFER_SIZE];
struct device *spi;
struct ti_adc108s102_chan chans[ADC108S102_CHANNELS];
struct adc_seq_table *seq_table;
uint8_t cmd_buf_len;
uint8_t sampling_buf_len;
uint8_t stride[2];
};
#ifdef __cplusplus
}
#endif
#endif /* __ADC108S102_PRIV_H__ */