drivers/mux/adg792a.c

1 // SPDX-License-Identifier: GPL-2.0
3  * Multiplexer driver for Analog Devices ADG792A/G Triple 4:1 mux
36 	struct i2c_client *i2c = to_i2c_client(mux->chip->dev.parent);  in adg792a_set()
39 	if (mux->chip->controllers == 1) {  in adg792a_set()
63 	struct device *dev = &i2c->dev;  in adg792a_probe()
70 	if (!i2c_check_functionality(i2c->adapter, I2C_FUNC_SMBUS_BYTE_DATA))  in adg792a_probe()
71 		return -ENODEV;  in adg792a_probe()
73 	ret = device_property_read_u32(dev, "#mux-control-cells", &cells);  in adg792a_probe()
77 		return -EINVAL;  in adg792a_probe()
83 	mux_chip->ops = &adg792a_ops;  in adg792a_probe()
89 	ret = device_property_read_u32_array(dev, "idle-state",  in adg792a_probe()
91 					     mux_chip->controllers);  in adg792a_probe()
98 	for (i = 0; i < mux_chip->controllers; ++i) {  in adg792a_probe()
99 		struct mux_control *mux = &mux_chip->mux[i];  in adg792a_probe()
101 		mux->states = 4;  in adg792a_probe()
106 		case 0 ... 4:  in adg792a_probe()
107 			mux->idle_state = idle_state[i];  in adg792a_probe()
110 			dev_err(dev, "invalid idle-state %d\n", idle_state[i]);  in adg792a_probe()
111 			return -EINVAL;  in adg792a_probe()
120 		dev_info(dev, "3x single pole quadruple throw muxes registered\n");  in adg792a_probe()
122 		dev_info(dev, "triple pole quadruple throw mux registered\n");  in adg792a_probe()
151 MODULE_DESCRIPTION("Analog Devices ADG792A/G Triple 4:1 mux driver");