56 static int usb3503_reset(struct usb3503 *hub, int state)  in usb3503_reset()  argument
58 	if (!state && gpio_is_valid(hub->gpio_connect))  in usb3503_reset()
59 		gpio_set_value_cansleep(hub->gpio_connect, 0);  in usb3503_reset()
61 	if (gpio_is_valid(hub->gpio_reset))  in usb3503_reset()
62 		gpio_set_value_cansleep(hub->gpio_reset, state);  in usb3503_reset()
71 static int usb3503_connect(struct usb3503 *hub)  in usb3503_connect()  argument
73 	struct device *dev = hub->dev;  in usb3503_connect()
76 	usb3503_reset(hub, 1);  in usb3503_connect()
78 	if (hub->regmap) {  in usb3503_connect()
80 		err = regmap_write(hub->regmap, USB3503_SP_ILOCK,  in usb3503_connect()
89 		if (hub->port_off_mask) {  in usb3503_connect()
90 			err = regmap_update_bits(hub->regmap, USB3503_PDS,  in usb3503_connect()
91 					hub->port_off_mask,  in usb3503_connect()
92 					hub->port_off_mask);  in usb3503_connect()
100 		err = regmap_update_bits(hub->regmap, USB3503_CFG1,  in usb3503_connect()
109 		err = regmap_update_bits(hub->regmap, USB3503_SP_ILOCK,  in usb3503_connect()
118 	if (gpio_is_valid(hub->gpio_connect))  in usb3503_connect()
119 		gpio_set_value_cansleep(hub->gpio_connect, 1);  in usb3503_connect()
121 	hub->mode = USB3503_MODE_HUB;  in usb3503_connect()
127 static int usb3503_switch_mode(struct usb3503 *hub, enum usb3503_mode mode)  in usb3503_switch_mode()  argument
129 	struct device *dev = hub->dev;  in usb3503_switch_mode()
134 		err = usb3503_connect(hub);  in usb3503_switch_mode()
138 		usb3503_reset(hub, 0);  in usb3503_switch_mode()
158 static int usb3503_probe(struct usb3503 *hub)  in usb3503_probe()  argument
160 	struct device *dev = hub->dev;  in usb3503_probe()
169 		hub->port_off_mask	= pdata->port_off_mask;  in usb3503_probe()
170 		hub->gpio_intn		= pdata->gpio_intn;  in usb3503_probe()
171 		hub->gpio_connect	= pdata->gpio_connect;  in usb3503_probe()
172 		hub->gpio_reset		= pdata->gpio_reset;  in usb3503_probe()
173 		hub->mode		= pdata->initial_mode;  in usb3503_probe()
176 		hub->port_off_mask = 0;  in usb3503_probe()
184 				hub->secondary_ref_clk = 0;  in usb3503_probe()
190 				hub->secondary_ref_clk = 1;  in usb3503_probe()
200 		hub->clk = devm_clk_get_optional(dev, "refclk");  in usb3503_probe()
201 		if (IS_ERR(hub->clk)) {  in usb3503_probe()
203 					PTR_ERR(hub->clk));  in usb3503_probe()
204 			return PTR_ERR(hub->clk);  in usb3503_probe()
208 			err = clk_set_rate(hub->clk, rate);  in usb3503_probe()
217 		err = clk_prepare_enable(hub->clk);  in usb3503_probe()
229 					hub->port_off_mask |= (1 << port);  in usb3503_probe()
233 		hub->gpio_intn	= of_get_named_gpio(np, "intn-gpios", 0);  in usb3503_probe()
234 		if (hub->gpio_intn == -EPROBE_DEFER)  in usb3503_probe()
236 		hub->gpio_connect = of_get_named_gpio(np, "connect-gpios", 0);  in usb3503_probe()
237 		if (hub->gpio_connect == -EPROBE_DEFER)  in usb3503_probe()
239 		hub->gpio_reset = of_get_named_gpio(np, "reset-gpios", 0);  in usb3503_probe()
240 		if (hub->gpio_reset == -EPROBE_DEFER)  in usb3503_probe()
243 		hub->mode = mode;  in usb3503_probe()
246 	if (hub->port_off_mask && !hub->regmap)  in usb3503_probe()
249 	if (gpio_is_valid(hub->gpio_intn)) {  in usb3503_probe()
250 		int val = hub->secondary_ref_clk ? GPIOF_OUT_INIT_LOW :  in usb3503_probe()
252 		err = devm_gpio_request_one(dev, hub->gpio_intn, val,  in usb3503_probe()
257 				hub->gpio_intn, err);  in usb3503_probe()
262 	if (gpio_is_valid(hub->gpio_connect)) {  in usb3503_probe()
263 		err = devm_gpio_request_one(dev, hub->gpio_connect,  in usb3503_probe()
268 				hub->gpio_connect, err);  in usb3503_probe()
273 	if (gpio_is_valid(hub->gpio_reset)) {  in usb3503_probe()
274 		err = devm_gpio_request_one(dev, hub->gpio_reset,  in usb3503_probe()
281 				hub->gpio_reset, err);  in usb3503_probe()
286 	usb3503_switch_mode(hub, hub->mode);  in usb3503_probe()
289 			(hub->mode == USB3503_MODE_HUB) ? "hub" : "standby");  in usb3503_probe()
297 	struct usb3503 *hub;  in usb3503_i2c_probe()  local
300 	hub = devm_kzalloc(&i2c->dev, sizeof(struct usb3503), GFP_KERNEL);  in usb3503_i2c_probe()
301 	if (!hub)  in usb3503_i2c_probe()
304 	i2c_set_clientdata(i2c, hub);  in usb3503_i2c_probe()
305 	hub->regmap = devm_regmap_init_i2c(i2c, &usb3503_regmap_config);  in usb3503_i2c_probe()
306 	if (IS_ERR(hub->regmap)) {  in usb3503_i2c_probe()
307 		err = PTR_ERR(hub->regmap);  in usb3503_i2c_probe()
311 	hub->dev = &i2c->dev;  in usb3503_i2c_probe()
313 	return usb3503_probe(hub);  in usb3503_i2c_probe()
318 	struct usb3503 *hub;  in usb3503_i2c_remove()  local
320 	hub = i2c_get_clientdata(i2c);  in usb3503_i2c_remove()
321 	clk_disable_unprepare(hub->clk);  in usb3503_i2c_remove()
328 	struct usb3503 *hub;  in usb3503_platform_probe()  local
330 	hub = devm_kzalloc(&pdev->dev, sizeof(struct usb3503), GFP_KERNEL);  in usb3503_platform_probe()
331 	if (!hub)  in usb3503_platform_probe()
333 	hub->dev = &pdev->dev;  in usb3503_platform_probe()
334 	platform_set_drvdata(pdev, hub);  in usb3503_platform_probe()
336 	return usb3503_probe(hub);  in usb3503_platform_probe()
341 	struct usb3503 *hub;  in usb3503_platform_remove()  local
343 	hub = platform_get_drvdata(pdev);  in usb3503_platform_remove()
344 	clk_disable_unprepare(hub->clk);  in usb3503_platform_remove()
350 static int usb3503_suspend(struct usb3503 *hub)  in usb3503_suspend()  argument
352 	usb3503_switch_mode(hub, USB3503_MODE_STANDBY);  in usb3503_suspend()
353 	clk_disable_unprepare(hub->clk);  in usb3503_suspend()
358 static int usb3503_resume(struct usb3503 *hub)  in usb3503_resume()  argument
360 	clk_prepare_enable(hub->clk);  in usb3503_resume()
361 	usb3503_switch_mode(hub, hub->mode);  in usb3503_resume()