drivers: adc: adopt new count_bits util function (17c42550) · Commits · Wenxi XU / zephyr

drivers/adc/adc_sam.c

+4 −14

Changes for drivers/adc/adc_sam.c: 4 added lines, 14 removed lines.
Original line number	Diff line number	Diff line
		@@ -16,6 +16,7 @@

		#include <zephyr/logging/log.h>
		#include <zephyr/irq.h>
		#include <zephyr/sys/util.h>
		LOG_MODULE_REGISTER(adc_sam, CONFIG_ADC_LOG_LEVEL);

		#define SAM_ADC_NUM_CHANNELS 16
		@@ -51,18 +52,6 @@ struct adc_sam_data {
		uint8_t num_active_channels;
		};

		static uint8_t count_bits(uint32_t val)
		{
		uint8_t res = 0;

		while (val) {
		res += val & 1U;
		val >>= 1;
		}

		return res;
		}

		static int adc_sam_channel_setup(const struct device *dev,
		const struct adc_channel_cfg *channel_cfg)
		{
		@@ -156,7 +145,8 @@ static void adc_context_start_sampling(struct adc_context *ctx)
		const struct adc_sam_config *const cfg = data->dev->config;
		Adc *const adc = cfg->regs;

		data->num_active_channels = count_bits(ctx->sequence.channels);
		data->num_active_channels =
		count_bits(&ctx->sequence.channels, sizeof(ctx->sequence.channels));

		/* Disable all */
		adc->ADC_CHDR = 0xffff;
		@@ -222,7 +212,7 @@ static int start_read(const struct device *dev,
		return -EINVAL;
		}

		data->num_active_channels = count_bits(channels);
		data->num_active_channels = count_bits(&channels, sizeof(channels));

		error = check_buffer_size(sequence, data->num_active_channels);
		if (error) {