4  * SPDX-License-Identifier: Apache-2.0
18 #define MCP4728_DAC_MAX_VAL			((1U << MCP4728_RESOLUTION) - 1U)
40 	if (channel_cfg->channel_id >= MCP4728_MAX_CHANNEL) {  in mcp4728_channel_setup()
41 		return -ENOTSUP;  in mcp4728_channel_setup()
44 	if (channel_cfg->resolution != MCP4728_RESOLUTION) {  in mcp4728_channel_setup()
45 		return -ENOTSUP;  in mcp4728_channel_setup()
48 	if (channel_cfg->internal) {  in mcp4728_channel_setup()
49 		return -ENOTSUP;  in mcp4728_channel_setup()
55 static int mcp4728_write_value(const struct device *dev, uint8_t channel, uint32_t value)  in mcp4728_write_value()  argument
57 	const struct mcp4728_config *config = (struct mcp4728_config *)dev->config;  in mcp4728_write_value()
61 	if (channel >= MCP4728_MAX_CHANNEL) {  in mcp4728_write_value()
62 		return -ENOTSUP;  in mcp4728_write_value()
66 		return -ENOTSUP;  in mcp4728_write_value()
69 	/* Multi-Write Command: Write Multiple DAC Input Registers. */  in mcp4728_write_value()
71 			(channel << MCP4728_MULTI_WRITE_CHANNEL_POS);  in mcp4728_write_value()
72 	tx_data[1] = (config->voltage_reference[channel] << MCP4728_MULTI_WRITE_REFERENCE_POS) |  in mcp4728_write_value()
73 			((config->power_down[channel] & MCP4728_MULTI_WRITE_POWER_DOWN_MASK)  in mcp4728_write_value()
75 			((config->gain[channel] << MCP4728_MULTI_WRITE_GAIN_POS)) |  in mcp4728_write_value()
79 	ret = i2c_write_dt(&config->bus, tx_data, sizeof(tx_data));  in mcp4728_write_value()
86 	const struct mcp4728_config *config = dev->config;  in dac_mcp4728_init()
88 	if (!device_is_ready(config->bus.bus)) {  in dac_mcp4728_init()
89 		LOG_ERR("%s device not found", config->bus.bus->name);  in dac_mcp4728_init()
90 		return -ENODEV;  in dac_mcp4728_init()