52 #define ADRF6780_LO_EN_MSK			BIT(1)
66 #define ADRF6780_ADC_EN_MSK			BIT(1)
91 static int __adrf6780_spi_read(struct adrf6780_state *st, unsigned int reg,  in __adrf6780_spi_read()  argument
97 	st->data[0] = 0x80 | (reg << 1);  in __adrf6780_spi_read()
98 	st->data[1] = 0x0;  in __adrf6780_spi_read()
99 	st->data[2] = 0x0;  in __adrf6780_spi_read()
101 	t.rx_buf = &st->data[0];  in __adrf6780_spi_read()
102 	t.tx_buf = &st->data[0];  in __adrf6780_spi_read()
105 	ret = spi_sync_transfer(st->spi, &t, 1);  in __adrf6780_spi_read()
109 	*val = (get_unaligned_be24(&st->data[0]) >> 1) & GENMASK(15, 0);  in __adrf6780_spi_read()
114 static int adrf6780_spi_read(struct adrf6780_state *st, unsigned int reg,  in adrf6780_spi_read()  argument
119 	mutex_lock(&st->lock);  in adrf6780_spi_read()
120 	ret = __adrf6780_spi_read(st, reg, val);  in adrf6780_spi_read()
121 	mutex_unlock(&st->lock);  in adrf6780_spi_read()
126 static int __adrf6780_spi_write(struct adrf6780_state *st,  in __adrf6780_spi_write()  argument
130 	put_unaligned_be24((val << 1) | (reg << 17), &st->data[0]);  in __adrf6780_spi_write()
132 	return spi_write(st->spi, &st->data[0], 3);  in __adrf6780_spi_write()
135 static int adrf6780_spi_write(struct adrf6780_state *st, unsigned int reg,  in adrf6780_spi_write()  argument
140 	mutex_lock(&st->lock);  in adrf6780_spi_write()
141 	ret = __adrf6780_spi_write(st, reg, val);  in adrf6780_spi_write()
142 	mutex_unlock(&st->lock);  in adrf6780_spi_write()
147 static int __adrf6780_spi_update_bits(struct adrf6780_state *st,  in __adrf6780_spi_update_bits()  argument
154 	ret = __adrf6780_spi_read(st, reg, &data);  in __adrf6780_spi_update_bits()
160 	return __adrf6780_spi_write(st, reg, temp);  in __adrf6780_spi_update_bits()
163 static int adrf6780_spi_update_bits(struct adrf6780_state *st, unsigned int reg,  in adrf6780_spi_update_bits()  argument
168 	mutex_lock(&st->lock);  in adrf6780_spi_update_bits()
169 	ret = __adrf6780_spi_update_bits(st, reg, mask, val);  in adrf6780_spi_update_bits()
170 	mutex_unlock(&st->lock);  in adrf6780_spi_update_bits()
175 static int adrf6780_read_adc_raw(struct adrf6780_state *st, unsigned int *read_val)  in adrf6780_read_adc_raw()  argument
179 	mutex_lock(&st->lock);  in adrf6780_read_adc_raw()
181 	ret = __adrf6780_spi_update_bits(st, ADRF6780_REG_ADC_CONTROL,  in adrf6780_read_adc_raw()
185 					 FIELD_PREP(ADRF6780_ADC_EN_MSK, 1) |  in adrf6780_read_adc_raw()
186 					 FIELD_PREP(ADRF6780_ADC_CLOCK_EN_MSK, 1) |  in adrf6780_read_adc_raw()
187 					 FIELD_PREP(ADRF6780_ADC_START_MSK, 1));  in adrf6780_read_adc_raw()
194 	ret = __adrf6780_spi_read(st, ADRF6780_REG_ADC_OUTPUT, read_val);  in adrf6780_read_adc_raw()
203 	ret = __adrf6780_spi_update_bits(st, ADRF6780_REG_ADC_CONTROL,  in adrf6780_read_adc_raw()
209 	ret = __adrf6780_spi_read(st, ADRF6780_REG_ADC_OUTPUT, read_val);  in adrf6780_read_adc_raw()
212 	mutex_unlock(&st->lock);  in adrf6780_read_adc_raw()
269 	struct adrf6780_state *st = iio_priv(indio_dev);  in adrf6780_write_raw()  local
273 		return adrf6780_spi_write(st, ADRF6780_REG_LINEARIZE, val);  in adrf6780_write_raw()
277 			return adrf6780_spi_update_bits(st,  in adrf6780_write_raw()
282 			return adrf6780_spi_update_bits(st,  in adrf6780_write_raw()
299 	struct adrf6780_state *st = iio_priv(indio_dev);  in adrf6780_reg_access()  local
302 		return adrf6780_spi_read(st, reg, read_val);  in adrf6780_reg_access()
304 		return adrf6780_spi_write(st, reg, write_val);  in adrf6780_reg_access()
316 	.indexed = 1,					\
323 	.output = 1,					\
324 	.indexed = 1,					\
331 	.modified = 1,						\
332 	.output = 1,						\
333 	.indexed = 1,						\
346 static int adrf6780_reset(struct adrf6780_state *st)  in adrf6780_reset()  argument
349 	struct spi_device *spi = st->spi;  in adrf6780_reset()
351 	ret = __adrf6780_spi_update_bits(st, ADRF6780_REG_CONTROL,  in adrf6780_reset()
353 					 FIELD_PREP(ADRF6780_SOFT_RESET_MSK, 1));  in adrf6780_reset()
359 	ret = __adrf6780_spi_update_bits(st, ADRF6780_REG_CONTROL,  in adrf6780_reset()
370 static int adrf6780_init(struct adrf6780_state *st)  in adrf6780_init()  argument
374 	struct spi_device *spi = st->spi;  in adrf6780_init()
377 	ret = adrf6780_reset(st);  in adrf6780_init()
381 	ret = __adrf6780_spi_read(st, ADRF6780_REG_CONTROL, &chip_id);  in adrf6780_init()
401 	enable_reg = FIELD_PREP(ADRF6780_VGA_BUFFER_EN_MSK, st->vga_buff_en) |  in adrf6780_init()
402 			FIELD_PREP(ADRF6780_DETECTOR_EN_MSK, 1) |  in adrf6780_init()
403 			FIELD_PREP(ADRF6780_LO_BUFFER_EN_MSK, st->lo_buff_en) |  in adrf6780_init()
404 			FIELD_PREP(ADRF6780_IF_MODE_EN_MSK, st->if_mode_en) |  in adrf6780_init()
405 			FIELD_PREP(ADRF6780_IQ_MODE_EN_MSK, st->iq_mode_en) |  in adrf6780_init()
406 			FIELD_PREP(ADRF6780_LO_X2_EN_MSK, st->lo_x2_en) |  in adrf6780_init()
407 			FIELD_PREP(ADRF6780_LO_PPF_EN_MSK, st->lo_ppf_en) |  in adrf6780_init()
408 			FIELD_PREP(ADRF6780_LO_EN_MSK, st->lo_en) |  in adrf6780_init()
409 			FIELD_PREP(ADRF6780_UC_BIAS_EN_MSK, st->uc_bias_en);  in adrf6780_init()
411 	ret = __adrf6780_spi_update_bits(st, ADRF6780_REG_ENABLE,  in adrf6780_init()
416 	ret = __adrf6780_spi_update_bits(st, ADRF6780_REG_LO_PATH,  in adrf6780_init()
418 					 FIELD_PREP(ADRF6780_LO_SIDEBAND_MSK, st->lo_sideband));  in adrf6780_init()
422 	return __adrf6780_spi_update_bits(st, ADRF6780_REG_ADC_CONTROL,  in adrf6780_init()
424 		FIELD_PREP(ADRF6780_VDET_OUTPUT_SELECT_MSK, st->vdet_out_en));  in adrf6780_init()
427 static void adrf6780_properties_parse(struct adrf6780_state *st)  in adrf6780_properties_parse()  argument
429 	struct spi_device *spi = st->spi;  in adrf6780_properties_parse()
431 	st->vga_buff_en = device_property_read_bool(&spi->dev, "adi,vga-buff-en");  in adrf6780_properties_parse()
432 	st->lo_buff_en = device_property_read_bool(&spi->dev, "adi,lo-buff-en");  in adrf6780_properties_parse()
433 	st->if_mode_en = device_property_read_bool(&spi->dev, "adi,if-mode-en");  in adrf6780_properties_parse()
434 	st->iq_mode_en = device_property_read_bool(&spi->dev, "adi,iq-mode-en");  in adrf6780_properties_parse()
435 	st->lo_x2_en = device_property_read_bool(&spi->dev, "adi,lo-x2-en");  in adrf6780_properties_parse()
436 	st->lo_ppf_en = device_property_read_bool(&spi->dev, "adi,lo-ppf-en");  in adrf6780_properties_parse()
437 	st->lo_en = device_property_read_bool(&spi->dev, "adi,lo-en");  in adrf6780_properties_parse()
438 	st->uc_bias_en = device_property_read_bool(&spi->dev, "adi,uc-bias-en");  in adrf6780_properties_parse()
439 	st->lo_sideband = device_property_read_bool(&spi->dev, "adi,lo-sideband");  in adrf6780_properties_parse()
440 	st->vdet_out_en = device_property_read_bool(&spi->dev, "adi,vdet-out-en");  in adrf6780_properties_parse()
452 	struct adrf6780_state *st;  in adrf6780_probe()  local
455 	indio_dev = devm_iio_device_alloc(&spi->dev, sizeof(*st));  in adrf6780_probe()
459 	st = iio_priv(indio_dev);  in adrf6780_probe()
466 	st->spi = spi;  in adrf6780_probe()
468 	adrf6780_properties_parse(st);  in adrf6780_probe()
470 	st->clkin = devm_clk_get_enabled(&spi->dev, "lo_in");  in adrf6780_probe()
471 	if (IS_ERR(st->clkin))  in adrf6780_probe()
472 		return dev_err_probe(&spi->dev, PTR_ERR(st->clkin),  in adrf6780_probe()
475 	mutex_init(&st->lock);  in adrf6780_probe()
477 	ret = adrf6780_init(st);  in adrf6780_probe()
481 	ret = devm_add_action_or_reset(&spi->dev, adrf6780_powerdown, st);  in adrf6780_probe()