64 	const struct i2c_arbitrator_data *arb = data;  in i2c_arbitrator_select()  local
68 	stop_time = jiffies + usecs_to_jiffies(arb->wait_free_us) + 1;  in i2c_arbitrator_select()
71 		gpio_set_value(arb->our_gpio, !arb->our_gpio_release);  in i2c_arbitrator_select()
72 		udelay(arb->slew_delay_us);  in i2c_arbitrator_select()
75 		stop_retry = jiffies + usecs_to_jiffies(arb->wait_retry_us) + 1;  in i2c_arbitrator_select()
77 			int gpio_val = !!gpio_get_value(arb->their_gpio);  in i2c_arbitrator_select()
79 			if (gpio_val == arb->their_gpio_release) {  in i2c_arbitrator_select()
88 		gpio_set_value(arb->our_gpio, arb->our_gpio_release);  in i2c_arbitrator_select()
90 		usleep_range(arb->wait_retry_us, arb->wait_retry_us * 2);  in i2c_arbitrator_select()
94 	gpio_set_value(arb->our_gpio, arb->our_gpio_release);  in i2c_arbitrator_select()
95 	udelay(arb->slew_delay_us);  in i2c_arbitrator_select()
108 	const struct i2c_arbitrator_data *arb = data;  in i2c_arbitrator_deselect()  local
111 	gpio_set_value(arb->our_gpio, arb->our_gpio_release);  in i2c_arbitrator_deselect()
112 	udelay(arb->slew_delay_us);  in i2c_arbitrator_deselect()
122 	struct i2c_arbitrator_data *arb;  in i2c_arbitrator_probe()  local
137 	arb = devm_kzalloc(dev, sizeof(*arb), GFP_KERNEL);  in i2c_arbitrator_probe()
138 	if (!arb) {  in i2c_arbitrator_probe()
142 	platform_set_drvdata(pdev, arb);  in i2c_arbitrator_probe()
151 	arb->our_gpio = ret;  in i2c_arbitrator_probe()
152 	arb->our_gpio_release = !!(gpio_flags & OF_GPIO_ACTIVE_LOW);  in i2c_arbitrator_probe()
155 	ret = devm_gpio_request_one(dev, arb->our_gpio, out_init,  in i2c_arbitrator_probe()
169 	arb->their_gpio = ret;  in i2c_arbitrator_probe()
170 	arb->their_gpio_release = !!(gpio_flags & OF_GPIO_ACTIVE_LOW);  in i2c_arbitrator_probe()
171 	ret = devm_gpio_request_one(dev, arb->their_gpio, GPIOF_IN,  in i2c_arbitrator_probe()
186 	if (of_property_read_u32(np, "slew-delay-us", &arb->slew_delay_us))  in i2c_arbitrator_probe()
187 		arb->slew_delay_us = 10;  in i2c_arbitrator_probe()
188 	if (of_property_read_u32(np, "wait-retry-us", &arb->wait_retry_us))  in i2c_arbitrator_probe()
189 		arb->wait_retry_us = 3000;  in i2c_arbitrator_probe()
190 	if (of_property_read_u32(np, "wait-free-us", &arb->wait_free_us))  in i2c_arbitrator_probe()
191 		arb->wait_free_us = 50000;  in i2c_arbitrator_probe()
199 	arb->parent = of_find_i2c_adapter_by_node(parent_np);  in i2c_arbitrator_probe()
200 	if (!arb->parent) {  in i2c_arbitrator_probe()
206 	arb->child = i2c_add_mux_adapter(arb->parent, dev, arb, 0, 0, 0,  in i2c_arbitrator_probe()
209 	if (!arb->child) {  in i2c_arbitrator_probe()
212 		i2c_put_adapter(arb->parent);  in i2c_arbitrator_probe()
220 	struct i2c_arbitrator_data *arb = platform_get_drvdata(pdev);  in i2c_arbitrator_remove()  local
222 	i2c_del_mux_adapter(arb->child);  in i2c_arbitrator_remove()
223 	i2c_put_adapter(arb->parent);  in i2c_arbitrator_remove()