nfc/nfcmrvl/i2c.c

25 static int nfcmrvl_i2c_read(struct nfcmrvl_i2c_drv_data *drv_data,
32 	ret = i2c_master_recv(drv_data->i2c, (u8 *)&nci_hdr, NCI_CTRL_HDR_SIZE);
34 		nfc_err(&drv_data->i2c->dev, "cannot read NCI header\n");
38 	*skb = nci_skb_alloc(drv_data->priv->ndev,
48 		ret = i2c_master_recv(drv_data->i2c,
53 			nfc_err(&drv_data->i2c->dev,
66 	struct nfcmrvl_i2c_drv_data *drv_data = drv_data_ptr;
70 	if (!drv_data->priv)
73 	if (test_bit(NFCMRVL_PHY_ERROR, &drv_data->priv->flags))
76 	ret = nfcmrvl_i2c_read(drv_data, &skb);
80 		set_bit(NFCMRVL_PHY_ERROR, &drv_data->priv->flags);
84 		nfc_err(&drv_data->i2c->dev, "read failed %d\n", ret);
87 		if (nfcmrvl_nci_recv_frame(drv_data->priv, skb) < 0)
88 			nfc_err(&drv_data->i2c->dev, "corrupted RX packet\n");
96 	struct nfcmrvl_i2c_drv_data *drv_data = priv->drv_data;
98 	if (!drv_data)
112 	struct nfcmrvl_i2c_drv_data *drv_data = priv->drv_data;
120 	ret = i2c_master_send(drv_data->i2c, skb->data, skb->len);
124 		nfc_info(drv_data->dev, "chip may sleep, retry\n");
126 		ret = i2c_master_send(drv_data->i2c, skb->data, skb->len);
131 			nfc_err(drv_data->dev,
189 	struct nfcmrvl_i2c_drv_data *drv_data;
198 	drv_data = devm_kzalloc(&client->dev, sizeof(*drv_data), GFP_KERNEL);
199 	if (!drv_data)
202 	drv_data->i2c = client;
203 	drv_data->dev = &client->dev;
204 	drv_data->priv = NULL;
206 	i2c_set_clientdata(client, drv_data);
218 	ret = devm_request_threaded_irq(&drv_data->i2c->dev, pdata->irq,
221 					"nfcmrvl_i2c_int", drv_data);
223 		nfc_err(&drv_data->i2c->dev,
228 	drv_data->priv = nfcmrvl_nci_register_dev(NFCMRVL_PHY_I2C,
229 						  drv_data, &i2c_ops,
230 						  &drv_data->i2c->dev, pdata);
232 	if (IS_ERR(drv_data->priv))
233 		return PTR_ERR(drv_data->priv);
235 	drv_data->priv->support_fw_dnld = true;
242 	struct nfcmrvl_i2c_drv_data *drv_data = i2c_get_clientdata(client);
244 	nfcmrvl_nci_unregister_dev(drv_data->priv);