44 	const struct i2c_arbitrator_data *arb = i2c_mux_priv(muxc);  in i2c_arbitrator_select()  local
48 	stop_time = jiffies + usecs_to_jiffies(arb->wait_free_us) + 1;  in i2c_arbitrator_select()
51 		gpiod_set_value(arb->our_gpio, 1);  in i2c_arbitrator_select()
52 		udelay(arb->slew_delay_us);  in i2c_arbitrator_select()
55 		stop_retry = jiffies + usecs_to_jiffies(arb->wait_retry_us) + 1;  in i2c_arbitrator_select()
57 			int gpio_val = gpiod_get_value(arb->their_gpio);  in i2c_arbitrator_select()
68 		gpiod_set_value(arb->our_gpio, 0);  in i2c_arbitrator_select()
70 		usleep_range(arb->wait_retry_us, arb->wait_retry_us * 2);  in i2c_arbitrator_select()
74 	gpiod_set_value(arb->our_gpio, 0);  in i2c_arbitrator_select()
75 	udelay(arb->slew_delay_us);  in i2c_arbitrator_select()
87 	const struct i2c_arbitrator_data *arb = i2c_mux_priv(muxc);  in i2c_arbitrator_deselect()  local
90 	gpiod_set_value(arb->our_gpio, 0);  in i2c_arbitrator_deselect()
91 	udelay(arb->slew_delay_us);  in i2c_arbitrator_deselect()
102 	struct i2c_arbitrator_data *arb;  in i2c_arbitrator_probe()  local
116 	muxc = i2c_mux_alloc(NULL, dev, 1, sizeof(*arb), I2C_MUX_ARBITRATOR,  in i2c_arbitrator_probe()
120 	arb = i2c_mux_priv(muxc);  in i2c_arbitrator_probe()
125 	arb->our_gpio = devm_gpiod_get(dev, "our-claim", GPIOD_OUT_LOW);  in i2c_arbitrator_probe()
126 	if (IS_ERR(arb->our_gpio)) {  in i2c_arbitrator_probe()
128 			PTR_ERR(arb->our_gpio));  in i2c_arbitrator_probe()
129 		return PTR_ERR(arb->our_gpio);  in i2c_arbitrator_probe()
132 	arb->their_gpio = devm_gpiod_get(dev, "their-claim", GPIOD_IN);  in i2c_arbitrator_probe()
133 	if (IS_ERR(arb->their_gpio)) {  in i2c_arbitrator_probe()
135 			PTR_ERR(arb->their_gpio));  in i2c_arbitrator_probe()
136 		return PTR_ERR(arb->their_gpio);  in i2c_arbitrator_probe()
149 	if (of_property_read_u32(np, "slew-delay-us", &arb->slew_delay_us))  in i2c_arbitrator_probe()
150 		arb->slew_delay_us = 10;  in i2c_arbitrator_probe()
151 	if (of_property_read_u32(np, "wait-retry-us", &arb->wait_retry_us))  in i2c_arbitrator_probe()
152 		arb->wait_retry_us = 3000;  in i2c_arbitrator_probe()
153 	if (of_property_read_u32(np, "wait-free-us", &arb->wait_free_us))  in i2c_arbitrator_probe()
154 		arb->wait_free_us = 50000;  in i2c_arbitrator_probe()
187 	{ .compatible = "i2c-arb-gpio-challenge", },
196 		.name	= "i2c-arb-gpio-challenge",
206 MODULE_ALIAS("platform:i2c-arb-gpio-challenge");