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Diffstat (limited to 'zephyr/shim/src/adc.c')
| -rw-r--r-- | zephyr/shim/src/adc.c | 83 |
1 files changed, 0 insertions, 83 deletions
diff --git a/zephyr/shim/src/adc.c b/zephyr/shim/src/adc.c deleted file mode 100644 index 4f66774466..0000000000 --- a/zephyr/shim/src/adc.c +++ /dev/null @@ -1,83 +0,0 @@ -/* Copyright 2021 The Chromium OS Authors. All rights reserved. - * Use of this source code is governed by a BSD-style license that can be - * found in the LICENSE file. - */ - -#include <drivers/adc.h> -#include <logging/log.h> -#include "adc.h" -#include "zephyr_adc.h" - -LOG_MODULE_REGISTER(shim_adc, LOG_LEVEL_ERR); - -#define ADC_NODE DT_NODELABEL(adc0) -const struct device *adc_dev; - -#define HAS_NAMED_ADC_CHANNELS DT_NODE_EXISTS(DT_INST(0, named_adc_channels)) - -#if HAS_NAMED_ADC_CHANNELS -#define ADC_CHANNEL_COMMA(node_id) \ - [ZSHIM_ADC_ID(node_id)] = { \ - .name = DT_LABEL(node_id), \ - .input_ch = DT_PROP(node_id, channel), \ - .factor_mul = DT_PROP(node_id, mul), \ - .factor_div = DT_PROP(node_id, div), \ - .channel_cfg = { \ - .channel_id = DT_PROP(node_id, channel), \ - .gain = DT_STRING_TOKEN(node_id, gain), \ - .reference = DT_STRING_TOKEN(node_id, reference), \ - .acquisition_time = \ - DT_PROP(node_id, acquisition_time), \ - .differential = DT_PROP(node_id, differential), \ - }, \ - }, -#ifdef CONFIG_ADC_CHANNELS_RUNTIME_CONFIG -struct adc_t adc_channels[] = { DT_FOREACH_CHILD( - DT_INST(0, named_adc_channels), ADC_CHANNEL_COMMA) }; -#else -const struct adc_t adc_channels[] = { DT_FOREACH_CHILD( - DT_INST(0, named_adc_channels), ADC_CHANNEL_COMMA) }; -#endif -#endif /* named_adc_channels */ - -static int init_device_bindings(const struct device *device) -{ - ARG_UNUSED(device); - adc_dev = DEVICE_DT_GET(ADC_NODE); - - if (!device_is_ready(adc_dev)) { - LOG_ERR("Error: device %s is not ready", adc_dev->name); - return -1; - } - -#if HAS_NAMED_ADC_CHANNELS - for (int i = 0; i < ARRAY_SIZE(adc_channels); i++) - adc_channel_setup(adc_dev, &adc_channels[i].channel_cfg); -#endif - - return 0; -} -SYS_INIT(init_device_bindings, POST_KERNEL, 51); - -int adc_read_channel(enum adc_channel ch) -{ - int ret = 0, rv; - struct adc_sequence seq = { - .options = NULL, - .channels = BIT(adc_channels[ch].input_ch), - .buffer = &ret, - .buffer_size = sizeof(ret), - .resolution = CONFIG_PLATFORM_EC_ADC_RESOLUTION, - .oversampling = CONFIG_PLATFORM_EC_ADC_OVERSAMPLING, - .calibrate = false, - }; - - rv = adc_read(adc_dev, &seq); - if (rv) - return rv; - - adc_raw_to_millivolts(adc_ref_internal(adc_dev), ADC_GAIN_1, - CONFIG_PLATFORM_EC_ADC_RESOLUTION, &ret); - ret = (ret * adc_channels[ch].factor_mul) / adc_channels[ch].factor_div; - return ret; -} |