1 // SPDX-License-Identifier: GPL-2.0+
11 #include <asm-generic/gpio.h>
22  * struct i2c_mux_gpio_priv - private data for i2c mux gpio
26  * @gpios: the mux-gpios array
27  * @n_gpios: num of gpios in mux-gpios
28  * @idle: the value of idle-state
33 	struct gpio_desc *gpios;  member
45 	for (i = 0; i < priv->n_gpios; i++) {  in i2c_mux_gpio_select()
46 		ret = dm_gpio_set_value(&priv->gpios[i], (channel >> i) & 1);  in i2c_mux_gpio_select()
60 	for (i = 0; i < priv->n_gpios; i++) {  in i2c_mux_gpio_deselect()
61 		ret = dm_gpio_set_value(&priv->gpios[i], (priv->idle >> i) & 1);  in i2c_mux_gpio_deselect()
71 	const void *fdt = gd->fdt_blob;  in i2c_mux_gpio_probe()
73 	struct i2c_mux_gpio_priv *mux = dev_get_priv(dev);  in i2c_mux_gpio_probe()  local
74 	struct gpio_desc *gpios;  in i2c_mux_gpio_probe()  local
78 	mux->n_values = fdtdec_get_child_count(fdt, node);  in i2c_mux_gpio_probe()
79 	values = devm_kzalloc(dev, sizeof(*mux->values) * mux->n_values,  in i2c_mux_gpio_probe()
83 		return -ENOMEM;  in i2c_mux_gpio_probe()
87 		*(values + i) = fdtdec_get_uint(fdt, subnode, "reg", -1);  in i2c_mux_gpio_probe()
91 	mux->values = values;  in i2c_mux_gpio_probe()
93 	mux->idle = fdtdec_get_uint(fdt, node, "idle-state", -1);  in i2c_mux_gpio_probe()
95 	mux->n_gpios = gpio_get_list_count(dev, "mux-gpios");  in i2c_mux_gpio_probe()
96 	if (mux->n_gpios < 0) {  in i2c_mux_gpio_probe()
97 		dev_err(dev, "Missing mux-gpios property\n");  in i2c_mux_gpio_probe()
98 		return -EINVAL;  in i2c_mux_gpio_probe()
101 	gpios = devm_kzalloc(dev, sizeof(struct gpio_desc) * mux->n_gpios,  in i2c_mux_gpio_probe()
103 	if (!gpios) {  in i2c_mux_gpio_probe()
104 		dev_err(dev, "Cannot allocate gpios array\n");  in i2c_mux_gpio_probe()
105 		return -ENOMEM;  in i2c_mux_gpio_probe()
108 	ret = gpio_request_list_by_name(dev, "mux-gpios", gpios, mux->n_gpios,  in i2c_mux_gpio_probe()
111 		dev_err(dev, "Failed to request mux-gpios\n");  in i2c_mux_gpio_probe()
115 	mux->gpios = gpios;  in i2c_mux_gpio_probe()
126 	{ .compatible = "i2c-mux-gpio", },