adc: ti_adc108s102: Remove driver as its bit-rotted
Nothing builds this driver and the driver hasn't been updated to the new ADC api so it does not compile. Remove it sinces its effectively dead code. Signed-off-by: Kumar Gala <kumar.gala@linaro.org>
This commit is contained in:
Kumar Gala
Anas Nashif
parent
121d68f379
commit
a8d0e5af07
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@ -3,7 +3,6 @@ zephyr_library()
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zephyr_library_sources_ifdef(CONFIG_ADC_DW adc_dw.c)
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zephyr_library_sources_ifdef(CONFIG_ADC_MCUX_ADC16 adc_mcux_adc16.c)
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zephyr_library_sources_ifdef(CONFIG_ADC_SAM_AFEC adc_sam_afec.c)
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zephyr_library_sources_ifdef(CONFIG_ADC_TI_ADC108S102 adc_ti_adc108s102.c)
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zephyr_library_sources_ifdef(CONFIG_ADC_NRFX_ADC adc_nrfx_adc.c)
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zephyr_library_sources_ifdef(CONFIG_ADC_NRFX_SAADC adc_nrfx_saadc.c)
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zephyr_library_sources_ifdef(CONFIG_ADC_INTEL_QUARK_D2000 adc_intel_quark_d2000.c)
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@ -75,8 +75,6 @@ source "drivers/adc/Kconfig.nrfx"
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source "drivers/adc/Kconfig.sam_afec"
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source "drivers/adc/Kconfig.ti_adc108s102"
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source "drivers/adc/Kconfig.intel_quark"
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endif # ADC
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@ -1,36 +0,0 @@
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# Kconfig - ADC configuration options
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#
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# Copyright (c) 2015 Intel Corporation
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#
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# SPDX-License-Identifier: Apache-2.0
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#
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menuconfig ADC_TI_ADC108S102
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bool "TI adc108s102 chip driver"
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select SPI
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select ADC_0
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help
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Enable support for TI's ADC chip adc108s102 driver.
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if ADC_TI_ADC108S102
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config ADC_TI_ADC108S102_SPI_PORT_NAME
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string "Master SPI port name"
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default ""
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help
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Master SPI port name through which adc108s102 chip is accessed.
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config ADC_TI_ADC108S102_SPI_FREQ
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int "Master SPI port max frequency"
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default 0
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help
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Master SPI port frequency used to access adc108s102 chip.
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config ADC_TI_ADC108S102_SPI_SLAVE
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int "SPI slave slot"
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default 0
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help
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adc108s102 chip's SPI slave number on master SPI port.
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endif # ADC_TI_ADC108S102
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@ -1,241 +0,0 @@
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/* adc-ti-adc108s102.c - TI's ADC 108s102 driver implementation */
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/*
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* Copyright (c) 2015 Intel Corporation
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*
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* SPDX-License-Identifier: Apache-2.0
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*/
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#include <errno.h>
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#include <kernel.h>
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#include <misc/util.h>
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#include <string.h>
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#include <init.h>
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#include "adc_ti_adc108s102.h"
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#define LOG_LEVEL CONFIG_ADC_LOG_LEVEL
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#include <logging/log.h>
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LOG_MODULE_REGISTER(adc_ti_adc108s102);
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static inline int _ti_adc108s102_sampling(struct device *dev)
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{
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struct ti_adc108s102_data *adc = dev->driver_data;
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const struct spi_buf tx_buf = {
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.buf = adc->cmd_buffer,
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.len = ADC108S102_CMD_BUFFER_SIZE
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};
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const struct spi_buf_set tx = {
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.buffers = &tx_buf,
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.count = 1
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};
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const struct spi_buf rx_buf = {
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.buf = adc->sampling_buffer,
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.len = ADC108S102_SAMPLING_BUFFER_SIZE
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};
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const struct spi_buf_set rx = {
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.buffers = &rx_buf,
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.count = 1
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};
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LOG_DBG("Sampling!");
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return spi_transceive(adc->spi, &adc->spi_cfg, &tx, &rx);
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}
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static inline void _ti_adc108s102_handle_result(struct device *dev)
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{
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struct ti_adc108s102_data *adc = dev->driver_data;
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struct adc_seq_table *seq_table = adc->seq_table;
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struct ti_adc108s102_chan *chan;
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struct adc_seq_entry *entry;
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u32_t s_i, i;
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LOG_DBG("_ti_adc108s102_handle_result()");
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for (i = 0, s_i = 1; i < seq_table->num_entries; i++, s_i++) {
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entry = &seq_table->entries[i];
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chan = &adc->chans[entry->channel_id];
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if (entry->buffer_length - chan->buf_idx == 0) {
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continue;
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}
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*((u16_t *)(entry->buffer+chan->buf_idx)) =
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ADC108S102_RESULT(adc->sampling_buffer[s_i]);
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chan->buf_idx += 2;
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}
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}
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static inline s32_t _ti_adc108s102_prepare(struct device *dev)
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{
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struct ti_adc108s102_data *adc = dev->driver_data;
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struct adc_seq_table *seq_table = adc->seq_table;
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struct ti_adc108s102_chan *chan;
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s32_t sampling_delay = 0;
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u32_t i;
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adc->cmd_buf_len = 0;
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adc->sampling_buf_len = 1; /* Counting the dummy byte */
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for (i = 0; i < seq_table->num_entries; i++) {
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struct adc_seq_entry *entry = &seq_table->entries[i];
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/* No more space in the buffer? */
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chan = &adc->chans[entry->channel_id];
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if (entry->buffer_length - chan->buf_idx == 0) {
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continue;
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}
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LOG_DBG("Requesting channel %d", entry->channel_id);
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adc->cmd_buffer[adc->cmd_buf_len] =
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ADC108S102_CHANNEL_CMD(entry->channel_id);
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adc->cmd_buf_len++;
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adc->sampling_buf_len++;
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sampling_delay = entry->sampling_delay;
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}
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if (adc->cmd_buf_len == 0) {
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return ADC108S102_DONE;
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}
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/* dummy cmd byte */
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adc->cmd_buffer[adc->cmd_buf_len] = 0;
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adc->cmd_buf_len++;
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LOG_DBG("ADC108S102 is prepared...");
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return sampling_delay;
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}
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static void ti_adc108s102_enable(struct device *dev)
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{
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ARG_UNUSED(dev);
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/*
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* There is nothing to be done. If there is no sampling going on,
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* the chip will put itself on power-saving mode (that is because
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* SPI will release CS)
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*/
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}
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static void ti_adc108s102_disable(struct device *dev)
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{
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ARG_UNUSED(dev);
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/* Same issue as with ti_adc108s102_enable() */
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}
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static inline int _verify_entries(struct adc_seq_table *seq_table)
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{
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struct adc_seq_entry *entry;
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u32_t chans_set = 0;
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int i;
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if (seq_table->num_entries >= ADC108S102_CMD_BUFFER_SIZE) {
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return 0;
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}
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for (i = 0; i < seq_table->num_entries; i++) {
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entry = &seq_table->entries[i];
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if (entry->sampling_delay <= 0 ||
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entry->channel_id >= ADC108S102_CHANNELS) {
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return 0;
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}
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if (!entry->buffer_length) {
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continue;
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}
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if (entry->buffer_length & 0x1) {
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return 0;
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}
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chans_set++;
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}
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return chans_set;
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}
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static int ti_adc108s102_read(struct device *dev,
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struct adc_seq_table *seq_table)
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{
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struct ti_adc108s102_data *adc = dev->driver_data;
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int ret = 0;
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s32_t delay;
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/* Resetting all internal channel data */
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(void)memset(adc->chans, 0, ADC108S102_CHANNELS_SIZE);
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if (_verify_entries(seq_table) == 0) {
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return -EINVAL;
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}
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adc->seq_table = seq_table;
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/* Sampling */
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while (1) {
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delay = _ti_adc108s102_prepare(dev);
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if (delay == ADC108S102_DONE) {
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break;
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}
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/* convert to milliseconds */
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delay = (s32_t)((MSEC_PER_SEC * (u64_t)delay) /
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CONFIG_SYS_CLOCK_TICKS_PER_SEC);
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k_sleep(delay);
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ret = _ti_adc108s102_sampling(dev);
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if (ret != 0) {
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break;
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}
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_ti_adc108s102_handle_result(dev);
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}
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return ret;
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}
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static const struct adc_driver_api ti_adc108s102_api = {
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.enable = ti_adc108s102_enable,
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.disable = ti_adc108s102_disable,
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.read = ti_adc108s102_read,
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};
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static int ti_adc108s102_init(struct device *dev)
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{
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struct ti_adc108s102_data *adc = dev->driver_data;
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adc->spi = device_get_binding(
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CONFIG_ADC_TI_ADC108S102_SPI_PORT_NAME);
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if (!adc->spi) {
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return -EINVAL;
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}
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adc->spi_cfg.operation = SPI_WORD_SET(16);
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adc->spi_cfg.frequency = CONFIG_ADC_TI_ADC108S102_SPI_FREQ;
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adc->spi_cfg.slave = CONFIG_ADC_TI_ADC108S102_SPI_SLAVE;
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LOG_DBG("ADC108s102 initialized");
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dev->driver_api = &ti_adc108s102_api;
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return 0;
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}
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#ifdef CONFIG_ADC_TI_ADC108S102
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static struct ti_adc108s102_data adc108s102_data;
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DEVICE_INIT(adc108s102, CONFIG_ADC_0_NAME,
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ti_adc108s102_init,
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&adc108s102_data, NULL,
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POST_KERNEL, CONFIG_ADC_INIT_PRIORITY);
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#endif /* CONFIG_ADC_TI_ADC108S102 */
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