1 // SPDX-License-Identifier: GPL-2.0+
5  * Copyright (c) 2012-2013 Dongjin Kim (tobetter@gmail.com)
58 	struct device *dev = hub->dev;  in usb3503_connect()
61 	if (hub->regmap) {  in usb3503_connect()
63 		err = regmap_write(hub->regmap, USB3503_SP_ILOCK,  in usb3503_connect()
71 		/* PDS : Set the ports which are disabled in self-powered mode. */  in usb3503_connect()
72 		if (hub->port_off_mask) {  in usb3503_connect()
73 			err = regmap_update_bits(hub->regmap, USB3503_PDS,  in usb3503_connect()
74 					hub->port_off_mask,  in usb3503_connect()
75 					hub->port_off_mask);  in usb3503_connect()
82 		/* CFG1 : Set SELF_BUS_PWR, this enables self-powered operation. */  in usb3503_connect()
83 		err = regmap_update_bits(hub->regmap, USB3503_CFG1,  in usb3503_connect()
92 		err = regmap_update_bits(hub->regmap, USB3503_SP_ILOCK,  in usb3503_connect()
101 	if (hub->connect)  in usb3503_connect()
102 		gpiod_set_value_cansleep(hub->connect, 1);  in usb3503_connect()
104 	hub->mode = USB3503_MODE_HUB;  in usb3503_connect()
112 	struct device *dev = hub->dev;  in usb3503_switch_mode()
134 		return -EINVAL;  in usb3503_switch_mode()
137 	if (!conn && hub->connect)  in usb3503_switch_mode()
138 		gpiod_set_value_cansleep(hub->connect, 0);  in usb3503_switch_mode()
140 	if (hub->reset)  in usb3503_switch_mode()
141 		gpiod_set_value_cansleep(hub->reset, rst);  in usb3503_switch_mode()
143 	if (hub->bypass)  in usb3503_switch_mode()
144 		gpiod_set_value_cansleep(hub->bypass, bypass);  in usb3503_switch_mode()
164 	struct device *dev = hub->dev;  in usb3503_probe()
166 	struct device_node *np = dev->of_node;  in usb3503_probe()
175 		hub->port_off_mask	= pdata->port_off_mask;  in usb3503_probe()
176 		hub->mode		= pdata->initial_mode;  in usb3503_probe()
179 		hub->port_off_mask = 0;  in usb3503_probe()
181 		if (!of_property_read_u32(np, "refclk-frequency", &rate)) {  in usb3503_probe()
187 				hub->secondary_ref_clk = 0;  in usb3503_probe()
193 				hub->secondary_ref_clk = 1;  in usb3503_probe()
199 				return -EINVAL;  in usb3503_probe()
203 		hub->clk = devm_clk_get_optional(dev, "refclk");  in usb3503_probe()
204 		if (IS_ERR(hub->clk)) {  in usb3503_probe()
206 					PTR_ERR(hub->clk));  in usb3503_probe()
207 			return PTR_ERR(hub->clk);  in usb3503_probe()
211 			err = clk_set_rate(hub->clk, rate);  in usb3503_probe()
220 		err = clk_prepare_enable(hub->clk);  in usb3503_probe()
227 		property = of_get_property(np, "disabled-ports", &len);  in usb3503_probe()
233 					hub->port_off_mask |= (1 << port);  in usb3503_probe()
237 		of_property_read_u32(np, "initial-mode", &mode);  in usb3503_probe()
238 		hub->mode = mode;  in usb3503_probe()
241 	if (hub->secondary_ref_clk)  in usb3503_probe()
245 	hub->intn = devm_gpiod_get_optional(dev, "intn", flags);  in usb3503_probe()
246 	if (IS_ERR(hub->intn)) {  in usb3503_probe()
247 		err = PTR_ERR(hub->intn);  in usb3503_probe()
250 	if (hub->intn)  in usb3503_probe()
251 		gpiod_set_consumer_name(hub->intn, "usb3503 intn");  in usb3503_probe()
253 	hub->connect = devm_gpiod_get_optional(dev, "connect", GPIOD_OUT_LOW);  in usb3503_probe()
254 	if (IS_ERR(hub->connect)) {  in usb3503_probe()
255 		err = PTR_ERR(hub->connect);  in usb3503_probe()
258 	if (hub->connect)  in usb3503_probe()
259 		gpiod_set_consumer_name(hub->connect, "usb3503 connect");  in usb3503_probe()
261 	hub->bypass = devm_gpiod_get_optional(dev, "bypass", GPIOD_OUT_HIGH);  in usb3503_probe()
262 	if (IS_ERR(hub->bypass)) {  in usb3503_probe()
263 		err = PTR_ERR(hub->bypass);  in usb3503_probe()
266 	if (hub->bypass)  in usb3503_probe()
267 		gpiod_set_consumer_name(hub->bypass, "usb3503 bypass");  in usb3503_probe()
269 	hub->reset = devm_gpiod_get_optional(dev, "reset", GPIOD_OUT_HIGH);  in usb3503_probe()
270 	if (IS_ERR(hub->reset)) {  in usb3503_probe()
271 		err = PTR_ERR(hub->reset);  in usb3503_probe()
274 	if (hub->reset) {  in usb3503_probe()
277 		gpiod_set_consumer_name(hub->reset, "usb3503 reset");  in usb3503_probe()
280 	if (hub->port_off_mask && !hub->regmap)  in usb3503_probe()
283 	usb3503_switch_mode(hub, hub->mode);  in usb3503_probe()
286 			(hub->mode == USB3503_MODE_HUB) ? "hub" : "standby");  in usb3503_probe()
292 		clk_disable_unprepare(hub->clk);  in usb3503_probe()
301 	hub = devm_kzalloc(&i2c->dev, sizeof(struct usb3503), GFP_KERNEL);  in usb3503_i2c_probe()
303 		return -ENOMEM;  in usb3503_i2c_probe()
306 	hub->regmap = devm_regmap_init_i2c(i2c, &usb3503_regmap_config);  in usb3503_i2c_probe()
307 	if (IS_ERR(hub->regmap)) {  in usb3503_i2c_probe()
308 		err = PTR_ERR(hub->regmap);  in usb3503_i2c_probe()
309 		dev_err(&i2c->dev, "Failed to initialise regmap: %d\n", err);  in usb3503_i2c_probe()
312 	hub->dev = &i2c->dev;  in usb3503_i2c_probe()
322 	clk_disable_unprepare(hub->clk);  in usb3503_i2c_remove()
329 	hub = devm_kzalloc(&pdev->dev, sizeof(struct usb3503), GFP_KERNEL);  in usb3503_platform_probe()
331 		return -ENOMEM;  in usb3503_platform_probe()
332 	hub->dev = &pdev->dev;  in usb3503_platform_probe()
343 	clk_disable_unprepare(hub->clk);  in usb3503_platform_remove()
349 	clk_disable_unprepare(hub->clk);  in usb3503_suspend()
356 	clk_prepare_enable(hub->clk);  in usb3503_resume()
357 	usb3503_switch_mode(hub, hub->mode);  in usb3503_resume()