1 // SPDX-License-Identifier: GPL-2.0-or-later
35 	mutex_lock(&phy->common.mutex);  in s3fwrn5_i2c_set_mode()
37 	if (s3fwrn5_phy_power_ctrl(&phy->common, mode) == false)  in s3fwrn5_i2c_set_mode()
40 	phy->irq_skip = true;  in s3fwrn5_i2c_set_mode()
43 	mutex_unlock(&phy->common.mutex);  in s3fwrn5_i2c_set_mode()
51 	mutex_lock(&phy->common.mutex);  in s3fwrn5_i2c_write()
53 	phy->irq_skip = false;  in s3fwrn5_i2c_write()
55 	ret = i2c_master_send(phy->i2c_dev, skb->data, skb->len);  in s3fwrn5_i2c_write()
56 	if (ret == -EREMOTEIO) {  in s3fwrn5_i2c_write()
59 		ret  = i2c_master_send(phy->i2c_dev, skb->data, skb->len);  in s3fwrn5_i2c_write()
62 	mutex_unlock(&phy->common.mutex);  in s3fwrn5_i2c_write()
67 	if (ret != skb->len)  in s3fwrn5_i2c_write()
68 		return -EREMOTEIO;  in s3fwrn5_i2c_write()
88 	hdr_size = (phy->common.mode == S3FWRN5_MODE_NCI) ?  in s3fwrn5_i2c_read()
90 	ret = i2c_master_recv(phy->i2c_dev, hdr, hdr_size);  in s3fwrn5_i2c_read()
95 		return -EBADMSG;  in s3fwrn5_i2c_read()
97 	data_len = (phy->common.mode == S3FWRN5_MODE_NCI) ?  in s3fwrn5_i2c_read()
98 		((struct nci_ctrl_hdr *)hdr)->plen :  in s3fwrn5_i2c_read()
99 		((struct s3fwrn5_fw_header *)hdr)->len;  in s3fwrn5_i2c_read()
103 		return -ENOMEM;  in s3fwrn5_i2c_read()
110 	ret = i2c_master_recv(phy->i2c_dev, skb_put(skb, data_len), data_len);  in s3fwrn5_i2c_read()
113 		return -EBADMSG;  in s3fwrn5_i2c_read()
117 	return s3fwrn5_recv_frame(phy->common.ndev, skb, phy->common.mode);  in s3fwrn5_i2c_read()
124 	if (!phy || !phy->common.ndev) {  in s3fwrn5_i2c_irq_thread_fn()
129 	mutex_lock(&phy->common.mutex);  in s3fwrn5_i2c_irq_thread_fn()
131 	if (phy->irq_skip)  in s3fwrn5_i2c_irq_thread_fn()
134 	switch (phy->common.mode) {  in s3fwrn5_i2c_irq_thread_fn()
144 	mutex_unlock(&phy->common.mutex);  in s3fwrn5_i2c_irq_thread_fn()
152 	struct device_node *np = client->dev.of_node;  in s3fwrn5_i2c_parse_dt()
155 		return -ENODEV;  in s3fwrn5_i2c_parse_dt()
157 	phy->common.gpio_en = of_get_named_gpio(np, "en-gpios", 0);  in s3fwrn5_i2c_parse_dt()
158 	if (!gpio_is_valid(phy->common.gpio_en)) {  in s3fwrn5_i2c_parse_dt()
160 		phy->common.gpio_en = of_get_named_gpio(np,  in s3fwrn5_i2c_parse_dt()
161 							"s3fwrn5,en-gpios",  in s3fwrn5_i2c_parse_dt()
163 		if (!gpio_is_valid(phy->common.gpio_en))  in s3fwrn5_i2c_parse_dt()
164 			return -ENODEV;  in s3fwrn5_i2c_parse_dt()
167 	phy->common.gpio_fw_wake = of_get_named_gpio(np, "wake-gpios", 0);  in s3fwrn5_i2c_parse_dt()
168 	if (!gpio_is_valid(phy->common.gpio_fw_wake)) {  in s3fwrn5_i2c_parse_dt()
170 		phy->common.gpio_fw_wake = of_get_named_gpio(np,  in s3fwrn5_i2c_parse_dt()
171 							     "s3fwrn5,fw-gpios",  in s3fwrn5_i2c_parse_dt()
173 		if (!gpio_is_valid(phy->common.gpio_fw_wake))  in s3fwrn5_i2c_parse_dt()
174 			return -ENODEV;  in s3fwrn5_i2c_parse_dt()
185 	phy = devm_kzalloc(&client->dev, sizeof(*phy), GFP_KERNEL);  in s3fwrn5_i2c_probe()
187 		return -ENOMEM;  in s3fwrn5_i2c_probe()
189 	mutex_init(&phy->common.mutex);  in s3fwrn5_i2c_probe()
190 	phy->common.mode = S3FWRN5_MODE_COLD;  in s3fwrn5_i2c_probe()
191 	phy->irq_skip = true;  in s3fwrn5_i2c_probe()
193 	phy->i2c_dev = client;  in s3fwrn5_i2c_probe()
200 	ret = devm_gpio_request_one(&phy->i2c_dev->dev, phy->common.gpio_en,  in s3fwrn5_i2c_probe()
205 	ret = devm_gpio_request_one(&phy->i2c_dev->dev,  in s3fwrn5_i2c_probe()
206 				    phy->common.gpio_fw_wake,  in s3fwrn5_i2c_probe()
213 	 * Depending on the hardware configuration this could be an always-on  in s3fwrn5_i2c_probe()
217 	phy->clk = devm_clk_get_optional_enabled(&client->dev, NULL);  in s3fwrn5_i2c_probe()
218 	if (IS_ERR(phy->clk))  in s3fwrn5_i2c_probe()
219 		return dev_err_probe(&client->dev, PTR_ERR(phy->clk),  in s3fwrn5_i2c_probe()
222 	ret = s3fwrn5_probe(&phy->common.ndev, phy, &phy->i2c_dev->dev,  in s3fwrn5_i2c_probe()
227 	ret = devm_request_threaded_irq(&client->dev, phy->i2c_dev->irq, NULL,  in s3fwrn5_i2c_probe()
236 	s3fwrn5_remove(phy->common.ndev);  in s3fwrn5_i2c_probe()
244 	s3fwrn5_remove(phy->common.ndev);  in s3fwrn5_i2c_remove()
254 	{ .compatible = "samsung,s3fwrn5-i2c", },