1 // SPDX-License-Identifier: GPL-2.0+
5  * Copyright (c) 2012-2013 Dongjin Kim (tobetter@gmail.com)
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()
73 	struct device *dev = hub->dev;  in usb3503_connect()
78 	if (hub->regmap) {  in usb3503_connect()
80 		err = regmap_write(hub->regmap, USB3503_SP_ILOCK,  in usb3503_connect()
88 		/* PDS : Set the ports which are disabled in self-powered mode. */  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()
99 		/* CFG1 : Set SELF_BUS_PWR, this enables self-powered operation. */  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()
129 	struct device *dev = hub->dev;  in usb3503_switch_mode()
144 		err = -EINVAL;  in usb3503_switch_mode()
160 	struct device *dev = hub->dev;  in usb3503_probe()
162 	struct device_node *np = dev->of_node;  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()
177 		hub->port_off_mask = 0;  in usb3503_probe()
179 		if (!of_property_read_u32(np, "refclk-frequency", &rate)) {  in usb3503_probe()
185 				hub->secondary_ref_clk = 0;  in usb3503_probe()
191 				hub->secondary_ref_clk = 1;  in usb3503_probe()
197 				return -EINVAL;  in usb3503_probe()
202 		if (IS_ERR(clk) && PTR_ERR(clk) != -ENOENT) {  in usb3503_probe()
209 			hub->clk = clk;  in usb3503_probe()
212 				err = clk_set_rate(hub->clk, rate);  in usb3503_probe()
221 			err = clk_prepare_enable(hub->clk);  in usb3503_probe()
229 		property = of_get_property(np, "disabled-ports", &len);  in usb3503_probe()
235 					hub->port_off_mask |= (1 << port);  in usb3503_probe()
239 		hub->gpio_intn	= of_get_named_gpio(np, "intn-gpios", 0);  in usb3503_probe()
240 		if (hub->gpio_intn == -EPROBE_DEFER)  in usb3503_probe()
241 			return -EPROBE_DEFER;  in usb3503_probe()
242 		hub->gpio_connect = of_get_named_gpio(np, "connect-gpios", 0);  in usb3503_probe()
243 		if (hub->gpio_connect == -EPROBE_DEFER)  in usb3503_probe()
244 			return -EPROBE_DEFER;  in usb3503_probe()
245 		hub->gpio_reset = of_get_named_gpio(np, "reset-gpios", 0);  in usb3503_probe()
246 		if (hub->gpio_reset == -EPROBE_DEFER)  in usb3503_probe()
247 			return -EPROBE_DEFER;  in usb3503_probe()
248 		of_property_read_u32(np, "initial-mode", &mode);  in usb3503_probe()
249 		hub->mode = mode;  in usb3503_probe()
252 	if (hub->port_off_mask && !hub->regmap)  in usb3503_probe()
255 	if (gpio_is_valid(hub->gpio_intn)) {  in usb3503_probe()
256 		int val = hub->secondary_ref_clk ? GPIOF_OUT_INIT_LOW :  in usb3503_probe()
258 		err = devm_gpio_request_one(dev, hub->gpio_intn, val,  in usb3503_probe()
263 				hub->gpio_intn, err);  in usb3503_probe()
268 	if (gpio_is_valid(hub->gpio_connect)) {  in usb3503_probe()
269 		err = devm_gpio_request_one(dev, hub->gpio_connect,  in usb3503_probe()
274 				hub->gpio_connect, err);  in usb3503_probe()
279 	if (gpio_is_valid(hub->gpio_reset)) {  in usb3503_probe()
280 		err = devm_gpio_request_one(dev, hub->gpio_reset,  in usb3503_probe()
287 				hub->gpio_reset, err);  in usb3503_probe()
292 	usb3503_switch_mode(hub, hub->mode);  in usb3503_probe()
295 			(hub->mode == USB3503_MODE_HUB) ? "hub" : "standby");  in usb3503_probe()
306 	hub = devm_kzalloc(&i2c->dev, sizeof(struct usb3503), GFP_KERNEL);  in usb3503_i2c_probe()
308 		return -ENOMEM;  in usb3503_i2c_probe()
311 	hub->regmap = devm_regmap_init_i2c(i2c, &usb3503_regmap_config);  in usb3503_i2c_probe()
312 	if (IS_ERR(hub->regmap)) {  in usb3503_i2c_probe()
313 		err = PTR_ERR(hub->regmap);  in usb3503_i2c_probe()
314 		dev_err(&i2c->dev, "Failed to initialise regmap: %d\n", err);  in usb3503_i2c_probe()
317 	hub->dev = &i2c->dev;  in usb3503_i2c_probe()
327 	if (hub->clk)  in usb3503_i2c_remove()
328 		clk_disable_unprepare(hub->clk);  in usb3503_i2c_remove()
337 	hub = devm_kzalloc(&pdev->dev, sizeof(struct usb3503), GFP_KERNEL);  in usb3503_platform_probe()
339 		return -ENOMEM;  in usb3503_platform_probe()
340 	hub->dev = &pdev->dev;  in usb3503_platform_probe()
351 	if (hub->clk)  in usb3503_platform_remove()
352 		clk_disable_unprepare(hub->clk);  in usb3503_platform_remove()
365 	if (hub->clk)  in usb3503_i2c_suspend()
366 		clk_disable_unprepare(hub->clk);  in usb3503_i2c_suspend()
376 	if (hub->clk)  in usb3503_i2c_resume()
377 		clk_prepare_enable(hub->clk);  in usb3503_i2c_resume()
379 	usb3503_switch_mode(hub, hub->mode);  in usb3503_i2c_resume()