86fde21f3b
The driver has to implement the logic in an interrupt based manner. Applying the changes to the existing drivers. Changing ADC's API and implementation as well to follow those changes. Change-Id: Ie0c3e3e318f619ade6be935adb064a25446cc29c Signed-off-by: Tomasz Bursztyka <tomasz.bursztyka@linux.intel.com>
63 lines
1.9 KiB
C
63 lines
1.9 KiB
C
/* adc-ti-adc108s102.h - Private */
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/*
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* Copyright (c) 2015 Intel Corporation
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*
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* Licensed under the Apache License, Version 2.0 (the "License");
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* you may not use this file except in compliance with the License.
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* You may obtain a copy of the License at
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*
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* http://www.apache.org/licenses/LICENSE-2.0
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*
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* Unless required by applicable law or agreed to in writing, software
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* distributed under the License is distributed on an "AS IS" BASIS,
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* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
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* See the License for the specific language governing permissions and
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* limitations under the License.
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*/
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#ifndef __ADC108S102_PRIV_H__
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#define __ADC108S102_PRIV_H__
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#include <spi.h>
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#include <adc.h>
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#include <misc/byteorder.h>
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/* Internal return code */
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#define ADC108S102_DONE (-1)
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/* 8 chans maximum + 1 dummy, 16 bits per-chans -> 18 bytes */
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#define ADC108S102_CMD_BUFFER_SIZE 9
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/* 1 dummy + 8 results maximum, 16 bits per-chans -> 18 bytes */
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#define ADC108S102_SAMPLING_BUFFER_SIZE 9
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#define ADC108S102_CHANNELS 8
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#define ADC108S102_CHANNELS_SIZE \
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(ADC108S102_CHANNELS * sizeof(uint32_t))
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#define ADC108S102_CHANNEL_CMD(_channel_) \
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sys_cpu_to_be16((_channel_ << 8) << 3)
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#define ADC108S102_RESULT_MASK 0xfff /* 12 bits resolution */
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#define ADC108S102_RESULT(_res_) \
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(sys_be16_to_cpu(_res_) & ADC108S102_RESULT_MASK)
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struct ti_adc108s102_config {
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const char *spi_port;
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uint32_t spi_config_flags;
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uint32_t spi_freq;
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uint32_t spi_slave;
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};
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struct ti_adc108s102_chan {
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uint32_t buf_idx;
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};
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struct ti_adc108s102_data {
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uint16_t cmd_buffer[ADC108S102_CMD_BUFFER_SIZE];
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uint8_t cmd_buf_len;
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uint16_t sampling_buffer[ADC108S102_SAMPLING_BUFFER_SIZE];
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uint8_t sampling_buf_len;
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struct device *spi;
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struct ti_adc108s102_chan chans[ADC108S102_CHANNELS];
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struct adc_seq_table *seq_table;
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};
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#endif /* __ADC108S102_PRIV_H__ */
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