55 static int usb3503_reset(struct usb3503 *hub, int state)  in usb3503_reset()  argument
57 	if (!state && hub->connect)  in usb3503_reset()
58 		gpiod_set_value_cansleep(hub->connect, 0);  in usb3503_reset()
60 	if (hub->reset)  in usb3503_reset()
61 		gpiod_set_value_cansleep(hub->reset, !state);  in usb3503_reset()
70 static int usb3503_connect(struct usb3503 *hub)  in usb3503_connect()  argument
72 	struct device *dev = hub->dev;  in usb3503_connect()
75 	usb3503_reset(hub, 1);  in usb3503_connect()
77 	if (hub->regmap) {  in usb3503_connect()
79 		err = regmap_write(hub->regmap, USB3503_SP_ILOCK,  in usb3503_connect()
88 		if (hub->port_off_mask) {  in usb3503_connect()
89 			err = regmap_update_bits(hub->regmap, USB3503_PDS,  in usb3503_connect()
90 					hub->port_off_mask,  in usb3503_connect()
91 					hub->port_off_mask);  in usb3503_connect()
99 		err = regmap_update_bits(hub->regmap, USB3503_CFG1,  in usb3503_connect()
108 		err = regmap_update_bits(hub->regmap, USB3503_SP_ILOCK,  in usb3503_connect()
117 	if (hub->connect)  in usb3503_connect()
118 		gpiod_set_value_cansleep(hub->connect, 1);  in usb3503_connect()
120 	hub->mode = USB3503_MODE_HUB;  in usb3503_connect()
126 static int usb3503_switch_mode(struct usb3503 *hub, enum usb3503_mode mode)  in usb3503_switch_mode()  argument
128 	struct device *dev = hub->dev;  in usb3503_switch_mode()
133 		err = usb3503_connect(hub);  in usb3503_switch_mode()
137 		usb3503_reset(hub, 0);  in usb3503_switch_mode()
157 static int usb3503_probe(struct usb3503 *hub)  in usb3503_probe()  argument
159 	struct device *dev = hub->dev;  in usb3503_probe()
170 		hub->port_off_mask	= pdata->port_off_mask;  in usb3503_probe()
171 		hub->mode		= pdata->initial_mode;  in usb3503_probe()
174 		hub->port_off_mask = 0;  in usb3503_probe()
182 				hub->secondary_ref_clk = 0;  in usb3503_probe()
188 				hub->secondary_ref_clk = 1;  in usb3503_probe()
198 		hub->clk = devm_clk_get_optional(dev, "refclk");  in usb3503_probe()
199 		if (IS_ERR(hub->clk)) {  in usb3503_probe()
201 					PTR_ERR(hub->clk));  in usb3503_probe()
202 			return PTR_ERR(hub->clk);  in usb3503_probe()
206 			err = clk_set_rate(hub->clk, rate);  in usb3503_probe()
215 		err = clk_prepare_enable(hub->clk);  in usb3503_probe()
228 					hub->port_off_mask |= (1 << port);  in usb3503_probe()
233 		hub->mode = mode;  in usb3503_probe()
236 	if (hub->secondary_ref_clk)  in usb3503_probe()
240 	hub->intn = devm_gpiod_get_optional(dev, "intn", flags);  in usb3503_probe()
241 	if (IS_ERR(hub->intn)) {  in usb3503_probe()
242 		err = PTR_ERR(hub->intn);  in usb3503_probe()
245 	if (hub->intn)  in usb3503_probe()
246 		gpiod_set_consumer_name(hub->intn, "usb3503 intn");  in usb3503_probe()
248 	hub->connect = devm_gpiod_get_optional(dev, "connect", GPIOD_OUT_LOW);  in usb3503_probe()
249 	if (IS_ERR(hub->connect)) {  in usb3503_probe()
250 		err = PTR_ERR(hub->connect);  in usb3503_probe()
253 	if (hub->connect)  in usb3503_probe()
254 		gpiod_set_consumer_name(hub->connect, "usb3503 connect");  in usb3503_probe()
256 	hub->reset = devm_gpiod_get_optional(dev, "reset", GPIOD_OUT_HIGH);  in usb3503_probe()
257 	if (IS_ERR(hub->reset)) {  in usb3503_probe()
258 		err = PTR_ERR(hub->reset);  in usb3503_probe()
261 	if (hub->reset) {  in usb3503_probe()
264 		gpiod_set_consumer_name(hub->reset, "usb3503 reset");  in usb3503_probe()
267 	if (hub->port_off_mask && !hub->regmap)  in usb3503_probe()
270 	usb3503_switch_mode(hub, hub->mode);  in usb3503_probe()
273 			(hub->mode == USB3503_MODE_HUB) ? "hub" : "standby");  in usb3503_probe()
279 		clk_disable_unprepare(hub->clk);  in usb3503_probe()
286 	struct usb3503 *hub;  in usb3503_i2c_probe()  local
289 	hub = devm_kzalloc(&i2c->dev, sizeof(struct usb3503), GFP_KERNEL);  in usb3503_i2c_probe()
290 	if (!hub)  in usb3503_i2c_probe()
293 	i2c_set_clientdata(i2c, hub);  in usb3503_i2c_probe()
294 	hub->regmap = devm_regmap_init_i2c(i2c, &usb3503_regmap_config);  in usb3503_i2c_probe()
295 	if (IS_ERR(hub->regmap)) {  in usb3503_i2c_probe()
296 		err = PTR_ERR(hub->regmap);  in usb3503_i2c_probe()
300 	hub->dev = &i2c->dev;  in usb3503_i2c_probe()
302 	return usb3503_probe(hub);  in usb3503_i2c_probe()
307 	struct usb3503 *hub;  in usb3503_i2c_remove()  local
309 	hub = i2c_get_clientdata(i2c);  in usb3503_i2c_remove()
310 	clk_disable_unprepare(hub->clk);  in usb3503_i2c_remove()
315 	struct usb3503 *hub;  in usb3503_platform_probe()  local
317 	hub = devm_kzalloc(&pdev->dev, sizeof(struct usb3503), GFP_KERNEL);  in usb3503_platform_probe()
318 	if (!hub)  in usb3503_platform_probe()
320 	hub->dev = &pdev->dev;  in usb3503_platform_probe()
321 	platform_set_drvdata(pdev, hub);  in usb3503_platform_probe()
323 	return usb3503_probe(hub);  in usb3503_platform_probe()
328 	struct usb3503 *hub;  in usb3503_platform_remove()  local
330 	hub = platform_get_drvdata(pdev);  in usb3503_platform_remove()
331 	clk_disable_unprepare(hub->clk);  in usb3503_platform_remove()
336 static int __maybe_unused usb3503_suspend(struct usb3503 *hub)  in usb3503_suspend()  argument
338 	usb3503_switch_mode(hub, USB3503_MODE_STANDBY);  in usb3503_suspend()
339 	clk_disable_unprepare(hub->clk);  in usb3503_suspend()
344 static int __maybe_unused usb3503_resume(struct usb3503 *hub)  in usb3503_resume()  argument
346 	clk_prepare_enable(hub->clk);  in usb3503_resume()
347 	usb3503_switch_mode(hub, hub->mode);  in usb3503_resume()