69 static int usb3503_reset(struct usb3503 *hub, int state)  in usb3503_reset()  argument
71 	if (!state && gpio_is_valid(hub->gpio_connect))  in usb3503_reset()
72 		gpio_set_value_cansleep(hub->gpio_connect, 0);  in usb3503_reset()
74 	if (gpio_is_valid(hub->gpio_reset))  in usb3503_reset()
75 		gpio_set_value_cansleep(hub->gpio_reset, state);  in usb3503_reset()
84 static int usb3503_connect(struct usb3503 *hub)  in usb3503_connect()  argument
86 	struct device *dev = hub->dev;  in usb3503_connect()
89 	usb3503_reset(hub, 1);  in usb3503_connect()
91 	if (hub->regmap) {  in usb3503_connect()
93 		err = regmap_write(hub->regmap, USB3503_SP_ILOCK,  in usb3503_connect()
102 		if (hub->port_off_mask) {  in usb3503_connect()
103 			err = regmap_update_bits(hub->regmap, USB3503_PDS,  in usb3503_connect()
104 					hub->port_off_mask,  in usb3503_connect()
105 					hub->port_off_mask);  in usb3503_connect()
113 		err = regmap_update_bits(hub->regmap, USB3503_CFG1,  in usb3503_connect()
122 		err = regmap_update_bits(hub->regmap, USB3503_SP_ILOCK,  in usb3503_connect()
131 	if (gpio_is_valid(hub->gpio_connect))  in usb3503_connect()
132 		gpio_set_value_cansleep(hub->gpio_connect, 1);  in usb3503_connect()
134 	hub->mode = USB3503_MODE_HUB;  in usb3503_connect()
140 static int usb3503_switch_mode(struct usb3503 *hub, enum usb3503_mode mode)  in usb3503_switch_mode()  argument
142 	struct device *dev = hub->dev;  in usb3503_switch_mode()
147 		err = usb3503_connect(hub);  in usb3503_switch_mode()
151 		usb3503_reset(hub, 0);  in usb3503_switch_mode()
171 static int usb3503_probe(struct usb3503 *hub)  in usb3503_probe()  argument
173 	struct device *dev = hub->dev;  in usb3503_probe()
182 		hub->port_off_mask	= pdata->port_off_mask;  in usb3503_probe()
183 		hub->gpio_intn		= pdata->gpio_intn;  in usb3503_probe()
184 		hub->gpio_connect	= pdata->gpio_connect;  in usb3503_probe()
185 		hub->gpio_reset		= pdata->gpio_reset;  in usb3503_probe()
186 		hub->mode		= pdata->initial_mode;  in usb3503_probe()
190 		hub->port_off_mask = 0;  in usb3503_probe()
198 				hub->secondary_ref_clk = 0;  in usb3503_probe()
204 				hub->secondary_ref_clk = 1;  in usb3503_probe()
222 			hub->clk = clk;  in usb3503_probe()
225 				err = clk_set_rate(hub->clk, rate);  in usb3503_probe()
234 			err = clk_prepare_enable(hub->clk);  in usb3503_probe()
248 					hub->port_off_mask |= (1 << port);  in usb3503_probe()
252 		hub->gpio_intn	= of_get_named_gpio(np, "intn-gpios", 0);  in usb3503_probe()
253 		if (hub->gpio_intn == -EPROBE_DEFER)  in usb3503_probe()
255 		hub->gpio_connect = of_get_named_gpio(np, "connect-gpios", 0);  in usb3503_probe()
256 		if (hub->gpio_connect == -EPROBE_DEFER)  in usb3503_probe()
258 		hub->gpio_reset = of_get_named_gpio(np, "reset-gpios", 0);  in usb3503_probe()
259 		if (hub->gpio_reset == -EPROBE_DEFER)  in usb3503_probe()
262 		hub->mode = mode;  in usb3503_probe()
265 	if (hub->port_off_mask && !hub->regmap)  in usb3503_probe()
268 	if (gpio_is_valid(hub->gpio_intn)) {  in usb3503_probe()
269 		int val = hub->secondary_ref_clk ? GPIOF_OUT_INIT_LOW :  in usb3503_probe()
271 		err = devm_gpio_request_one(dev, hub->gpio_intn, val,  in usb3503_probe()
276 				hub->gpio_intn, err);  in usb3503_probe()
281 	if (gpio_is_valid(hub->gpio_connect)) {  in usb3503_probe()
282 		err = devm_gpio_request_one(dev, hub->gpio_connect,  in usb3503_probe()
287 				hub->gpio_connect, err);  in usb3503_probe()
292 	if (gpio_is_valid(hub->gpio_reset)) {  in usb3503_probe()
293 		err = devm_gpio_request_one(dev, hub->gpio_reset,  in usb3503_probe()
298 				hub->gpio_reset, err);  in usb3503_probe()
303 	usb3503_switch_mode(hub, hub->mode);  in usb3503_probe()
306 			(hub->mode == USB3503_MODE_HUB) ? "hub" : "standby");  in usb3503_probe()
314 	struct usb3503 *hub;  in usb3503_i2c_probe()  local
317 	hub = devm_kzalloc(&i2c->dev, sizeof(struct usb3503), GFP_KERNEL);  in usb3503_i2c_probe()
318 	if (!hub)  in usb3503_i2c_probe()
321 	i2c_set_clientdata(i2c, hub);  in usb3503_i2c_probe()
322 	hub->regmap = devm_regmap_init_i2c(i2c, &usb3503_regmap_config);  in usb3503_i2c_probe()
323 	if (IS_ERR(hub->regmap)) {  in usb3503_i2c_probe()
324 		err = PTR_ERR(hub->regmap);  in usb3503_i2c_probe()
328 	hub->dev = &i2c->dev;  in usb3503_i2c_probe()
330 	return usb3503_probe(hub);  in usb3503_i2c_probe()
335 	struct usb3503 *hub;  in usb3503_platform_probe()  local
337 	hub = devm_kzalloc(&pdev->dev, sizeof(struct usb3503), GFP_KERNEL);  in usb3503_platform_probe()
338 	if (!hub)  in usb3503_platform_probe()
340 	hub->dev = &pdev->dev;  in usb3503_platform_probe()
342 	return usb3503_probe(hub);  in usb3503_platform_probe()
349 	struct usb3503 *hub = i2c_get_clientdata(client);  in usb3503_i2c_suspend()  local
351 	usb3503_switch_mode(hub, USB3503_MODE_STANDBY);  in usb3503_i2c_suspend()
353 	if (hub->clk)  in usb3503_i2c_suspend()
354 		clk_disable_unprepare(hub->clk);  in usb3503_i2c_suspend()
362 	struct usb3503 *hub = i2c_get_clientdata(client);  in usb3503_i2c_resume()  local
364 	if (hub->clk)  in usb3503_i2c_resume()
365 		clk_prepare_enable(hub->clk);  in usb3503_i2c_resume()
367 	usb3503_switch_mode(hub, hub->mode);  in usb3503_i2c_resume()