10 #include <zephyr/drivers/adc.h>
13 #include <reg/adc.h>
22 	/* ADC Register base address */
23 	struct adc_regs *adc;  member
36 /* ADC local functions */
61 /* ADC Sample Flow (by using adc_context.h api function)
62  *  1. Start ADC sampling (set up flag ctx->sync)
64  *  2. Wait ADC sample finish (by monitor flag ctx->sync)
66  *  3. Finish ADC sample (isr clear flag ctx->sync)
76 		LOG_ERR("Invalid ADC channels.");  in adc_kb1200_start_read()
79 	/* Fixed 10 bit resolution of ene ADC */  in adc_kb1200_start_read()
81 		LOG_ERR("Unfixed 10 bit ADC resolution.");  in adc_kb1200_start_read()
86 		LOG_ERR("ADC buffer size too small.");  in adc_kb1200_start_read()
95 	/* Inform adc start sampling */  in adc_kb1200_start_read()
97 	/* Since kb1200 adc has no irq. So need polling the adc conversion  in adc_kb1200_start_read()
98 	 * flag to be valid, then record adc value.  in adc_kb1200_start_read()
100 	uint32_t channels = (config->adc->ADCCFG & ADC_CHANNEL_BIT_MASK) >> ADC_CHANNEL_BIT_POS;  in adc_kb1200_start_read()
109 		while (config->adc->ADCDAT[ch_num] & ADC_INVALID_VALUE) {  in adc_kb1200_start_read()
113 				LOG_ERR("ADC busy timeout...");  in adc_kb1200_start_read()
118 		/* check buffer size is enough then record adc value */  in adc_kb1200_start_read()
120 			*data->buffer = (uint16_t)(config->adc->ADCDAT[ch_num]);  in adc_kb1200_start_read()
130 	/* Besause polling the adc conversion flag. don't need wait_for_completion*/  in adc_kb1200_start_read()
132 	/* Inform adc sampling is done */  in adc_kb1200_start_read()
137 /* ADC api functions */
165 	LOG_DBG("ADC channel %d configured.", channel_cfg->channel_id);  in adc_kb1200_channel_setup()
196 /* ADC api function (using by adc_context.H function) */
204 	config->adc->ADCCFG = (config->adc->ADCCFG & ~ADC_CHANNEL_BIT_MASK) |  in adc_context_start_sampling()
206 	config->adc->ADCCFG |= ADC_FUNCTION_ENABLE;  in adc_context_start_sampling()
218 static DEVICE_API(adc, adc_kb1200_api) = {
234 	/* Configure pin-mux for ADC device */  in adc_kb1200_init()
237 		LOG_ERR("ADC pinctrl setup failed (%d).", ret);  in adc_kb1200_init()
252 		.adc = (struct adc_regs *)DT_INST_REG_ADDR(inst),                                  \