47 	struct mbox_test_device *tdev = filp->private_data;  in mbox_test_signal_write()  local
50 	if (!tdev->tx_channel) {  in mbox_test_signal_write()
51 		dev_err(tdev->dev, "Channel cannot do Tx\n");  in mbox_test_signal_write()
56 		dev_err(tdev->dev,  in mbox_test_signal_write()
62 	tdev->signal = kzalloc(MBOX_MAX_SIG_LEN, GFP_KERNEL);  in mbox_test_signal_write()
63 	if (!tdev->signal)  in mbox_test_signal_write()
66 	ret = copy_from_user(tdev->signal, userbuf, count);  in mbox_test_signal_write()
68 		kfree(tdev->signal);  in mbox_test_signal_write()
85 	struct mbox_test_device *tdev = filp->private_data;  in mbox_test_message_write()  local
89 	if (!tdev->tx_channel) {  in mbox_test_message_write()
90 		dev_err(tdev->dev, "Channel cannot do Tx\n");  in mbox_test_message_write()
95 		dev_err(tdev->dev,  in mbox_test_message_write()
101 	tdev->message = kzalloc(MBOX_MAX_MSG_LEN, GFP_KERNEL);  in mbox_test_message_write()
102 	if (!tdev->message)  in mbox_test_message_write()
105 	ret = copy_from_user(tdev->message, userbuf, count);  in mbox_test_message_write()
115 	if (tdev->mmio && tdev->signal) {  in mbox_test_message_write()
117 			       MBOX_BYTES_PER_LINE, 1, tdev->signal, MBOX_MAX_SIG_LEN, true);  in mbox_test_message_write()
119 		data = tdev->signal;  in mbox_test_message_write()
121 		data = tdev->message;  in mbox_test_message_write()
124 		       MBOX_BYTES_PER_LINE, 1, tdev->message, MBOX_MAX_MSG_LEN, true);  in mbox_test_message_write()
126 	ret = mbox_send_message(tdev->tx_channel, data);  in mbox_test_message_write()
128 		dev_err(tdev->dev, "Failed to send message via mailbox\n");  in mbox_test_message_write()
131 	kfree(tdev->signal);  in mbox_test_message_write()
132 	kfree(tdev->message);  in mbox_test_message_write()
140 	struct mbox_test_device *tdev = filp->private_data;  in mbox_test_message_read()  local
150 	if (!tdev->rx_channel) {  in mbox_test_message_read()
157 	if (tdev->rx_buffer[0] == '\0') {  in mbox_test_message_read()
164 	spin_lock_irqsave(&tdev->lock, flags);  in mbox_test_message_read()
166 	ptr = tdev->rx_buffer;  in mbox_test_message_read()
179 	memset(tdev->rx_buffer, 0, MBOX_MAX_MSG_LEN);  in mbox_test_message_read()
181 	spin_unlock_irqrestore(&tdev->lock, flags);  in mbox_test_message_read()
197 				 struct mbox_test_device *tdev)  in mbox_test_add_debugfs()  argument
209 			    tdev, &mbox_test_message_ops);  in mbox_test_add_debugfs()
212 			    tdev, &mbox_test_signal_ops);  in mbox_test_add_debugfs()
219 	struct mbox_test_device *tdev = dev_get_drvdata(client->dev);  in mbox_test_receive_message()  local
222 	spin_lock_irqsave(&tdev->lock, flags);  in mbox_test_receive_message()
223 	if (tdev->mmio) {  in mbox_test_receive_message()
224 		memcpy_fromio(tdev->rx_buffer, tdev->mmio, MBOX_MAX_MSG_LEN);  in mbox_test_receive_message()
227 			       tdev->rx_buffer, MBOX_MAX_MSG_LEN, true);  in mbox_test_receive_message()
232 		memcpy(tdev->rx_buffer, message, MBOX_MAX_MSG_LEN);  in mbox_test_receive_message()
234 	spin_unlock_irqrestore(&tdev->lock, flags);  in mbox_test_receive_message()
239 	struct mbox_test_device *tdev = dev_get_drvdata(client->dev);  in mbox_test_prepare_message()  local
241 	if (tdev->mmio) {  in mbox_test_prepare_message()
242 		if (tdev->signal)  in mbox_test_prepare_message()
243 			memcpy_toio(tdev->mmio, tdev->message, MBOX_MAX_MSG_LEN);  in mbox_test_prepare_message()
245 			memcpy_toio(tdev->mmio, message, MBOX_MAX_MSG_LEN);  in mbox_test_prepare_message()
289 	struct mbox_test_device *tdev;  in mbox_test_probe()  local
293 	tdev = devm_kzalloc(&pdev->dev, sizeof(*tdev), GFP_KERNEL);  in mbox_test_probe()
294 	if (!tdev)  in mbox_test_probe()
299 	tdev->mmio = devm_ioremap_resource(&pdev->dev, res);  in mbox_test_probe()
300 	if (IS_ERR(tdev->mmio))  in mbox_test_probe()
301 		tdev->mmio = NULL;  in mbox_test_probe()
303 	tdev->tx_channel = mbox_test_request_channel(pdev, "tx");  in mbox_test_probe()
304 	tdev->rx_channel = mbox_test_request_channel(pdev, "rx");  in mbox_test_probe()
306 	if (!tdev->tx_channel && !tdev->rx_channel)  in mbox_test_probe()
309 	tdev->dev = &pdev->dev;  in mbox_test_probe()
310 	platform_set_drvdata(pdev, tdev);  in mbox_test_probe()
312 	spin_lock_init(&tdev->lock);  in mbox_test_probe()
314 	if (tdev->rx_channel) {  in mbox_test_probe()
315 		tdev->rx_buffer = devm_kzalloc(&pdev->dev,  in mbox_test_probe()
317 		if (!tdev->rx_buffer)  in mbox_test_probe()
321 	ret = mbox_test_add_debugfs(pdev, tdev);  in mbox_test_probe()
332 	struct mbox_test_device *tdev = platform_get_drvdata(pdev);  in mbox_test_remove()  local
336 	if (tdev->tx_channel)  in mbox_test_remove()
337 		mbox_free_channel(tdev->tx_channel);  in mbox_test_remove()
338 	if (tdev->rx_channel)  in mbox_test_remove()
339 		mbox_free_channel(tdev->rx_channel);  in mbox_test_remove()