57 #define i2c_hid_dbg(ihid, fmt, arg...)					  \  argument
60 		dev_printk(KERN_DEBUG, &(ihid)->client->dev, fmt, ##arg); \
159 	struct i2c_hid *ihid = i2c_get_clientdata(client);  in __i2c_hid_command()  local
160 	union command *cmd = (union command *)ihid->cmdbuf;  in __i2c_hid_command()
171 		cmd->c.reg = ihid->wHIDDescRegister;  in __i2c_hid_command()
173 		cmd->data[0] = ihid->hdesc_buffer[registerIndex];  in __i2c_hid_command()
174 		cmd->data[1] = ihid->hdesc_buffer[registerIndex + 1];  in __i2c_hid_command()
185 	i2c_hid_dbg(ihid, "%s: cmd=%*ph\n", __func__, length, cmd->data);  in __i2c_hid_command()
198 		set_bit(I2C_HID_READ_PENDING, &ihid->flags);  in __i2c_hid_command()
202 		set_bit(I2C_HID_RESET_PENDING, &ihid->flags);  in __i2c_hid_command()
207 		clear_bit(I2C_HID_READ_PENDING, &ihid->flags);  in __i2c_hid_command()
215 		i2c_hid_dbg(ihid, "%s: waiting...\n", __func__);  in __i2c_hid_command()
216 		if (!wait_event_timeout(ihid->wait,  in __i2c_hid_command()
217 				!test_bit(I2C_HID_RESET_PENDING, &ihid->flags),  in __i2c_hid_command()
220 		i2c_hid_dbg(ihid, "%s: finished.\n", __func__);  in __i2c_hid_command()
237 	struct i2c_hid *ihid = i2c_get_clientdata(client);  in i2c_hid_get_report()  local
241 	u16 readRegister = le16_to_cpu(ihid->hdesc.wDataRegister);  in i2c_hid_get_report()
243 	i2c_hid_dbg(ihid, "%s\n", __func__);  in i2c_hid_get_report()
276 	struct i2c_hid *ihid = i2c_get_clientdata(client);  in i2c_hid_set_or_send_report()  local
277 	u8 *args = ihid->argsbuf;  in i2c_hid_set_or_send_report()
280 	u16 dataRegister = le16_to_cpu(ihid->hdesc.wDataRegister);  in i2c_hid_set_or_send_report()
281 	u16 outputRegister = le16_to_cpu(ihid->hdesc.wOutputRegister);  in i2c_hid_set_or_send_report()
282 	u16 maxOutputLength = le16_to_cpu(ihid->hdesc.wMaxOutputLength);  in i2c_hid_set_or_send_report()
287 	i2c_hid_dbg(ihid, "%s\n", __func__);  in i2c_hid_set_or_send_report()
289 	if (data_len > ihid->bufsize)  in i2c_hid_set_or_send_report()
341 	struct i2c_hid *ihid = i2c_get_clientdata(client);  in i2c_hid_set_power()  local
344 	i2c_hid_dbg(ihid, "%s\n", __func__);  in i2c_hid_set_power()
356 	struct i2c_hid *ihid = i2c_get_clientdata(client);  in i2c_hid_hwreset()  local
359 	i2c_hid_dbg(ihid, "%s\n", __func__);  in i2c_hid_hwreset()
365 	i2c_hid_dbg(ihid, "resetting...\n");  in i2c_hid_hwreset()
377 static void i2c_hid_get_input(struct i2c_hid *ihid)  in i2c_hid_get_input()  argument
380 	int size = le16_to_cpu(ihid->hdesc.wMaxInputLength);  in i2c_hid_get_input()
382 	if (size > ihid->bufsize)  in i2c_hid_get_input()
383 		size = ihid->bufsize;  in i2c_hid_get_input()
385 	ret = i2c_master_recv(ihid->client, ihid->inbuf, size);  in i2c_hid_get_input()
390 		dev_err(&ihid->client->dev, "%s: got %d data instead of %d\n",  in i2c_hid_get_input()
395 	ret_size = ihid->inbuf[0] | ihid->inbuf[1] << 8;  in i2c_hid_get_input()
399 		if (test_and_clear_bit(I2C_HID_RESET_PENDING, &ihid->flags))  in i2c_hid_get_input()
400 			wake_up(&ihid->wait);  in i2c_hid_get_input()
405 		dev_err(&ihid->client->dev, "%s: incomplete report (%d/%d)\n",  in i2c_hid_get_input()
410 	i2c_hid_dbg(ihid, "input: %*ph\n", ret_size, ihid->inbuf);  in i2c_hid_get_input()
412 	if (test_bit(I2C_HID_STARTED, &ihid->flags))  in i2c_hid_get_input()
413 		hid_input_report(ihid->hid, HID_INPUT_REPORT, ihid->inbuf + 2,  in i2c_hid_get_input()
421 	struct i2c_hid *ihid = dev_id;  in i2c_hid_irq()  local
423 	if (test_bit(I2C_HID_READ_PENDING, &ihid->flags))  in i2c_hid_irq()
426 	i2c_hid_get_input(ihid);  in i2c_hid_irq()
442 	struct i2c_hid *ihid = i2c_get_clientdata(client);  in i2c_hid_init_report()  local
451 	i2c_hid_dbg(ihid, "report (len=%d): %*ph\n", size, size, buffer);  in i2c_hid_init_report()
474 	struct i2c_hid *ihid = i2c_get_clientdata(client);  in i2c_hid_init_reports()  local
475 	u8 *inbuf = kzalloc(ihid->bufsize, GFP_KERNEL);  in i2c_hid_init_reports()
490 		i2c_hid_init_report(report, inbuf, ihid->bufsize);  in i2c_hid_init_reports()
515 static void i2c_hid_free_buffers(struct i2c_hid *ihid)  in i2c_hid_free_buffers()  argument
517 	kfree(ihid->inbuf);  in i2c_hid_free_buffers()
518 	kfree(ihid->rawbuf);  in i2c_hid_free_buffers()
519 	kfree(ihid->argsbuf);  in i2c_hid_free_buffers()
520 	kfree(ihid->cmdbuf);  in i2c_hid_free_buffers()
521 	ihid->inbuf = NULL;  in i2c_hid_free_buffers()
522 	ihid->rawbuf = NULL;  in i2c_hid_free_buffers()
523 	ihid->cmdbuf = NULL;  in i2c_hid_free_buffers()
524 	ihid->argsbuf = NULL;  in i2c_hid_free_buffers()
525 	ihid->bufsize = 0;  in i2c_hid_free_buffers()
528 static int i2c_hid_alloc_buffers(struct i2c_hid *ihid, size_t report_size)  in i2c_hid_alloc_buffers()  argument
537 	ihid->inbuf = kzalloc(report_size, GFP_KERNEL);  in i2c_hid_alloc_buffers()
538 	ihid->rawbuf = kzalloc(report_size, GFP_KERNEL);  in i2c_hid_alloc_buffers()
539 	ihid->argsbuf = kzalloc(args_len, GFP_KERNEL);  in i2c_hid_alloc_buffers()
540 	ihid->cmdbuf = kzalloc(sizeof(union command) + args_len, GFP_KERNEL);  in i2c_hid_alloc_buffers()
542 	if (!ihid->inbuf || !ihid->rawbuf || !ihid->argsbuf || !ihid->cmdbuf) {  in i2c_hid_alloc_buffers()
543 		i2c_hid_free_buffers(ihid);  in i2c_hid_alloc_buffers()
547 	ihid->bufsize = report_size;  in i2c_hid_alloc_buffers()
557 	struct i2c_hid *ihid = i2c_get_clientdata(client);  in i2c_hid_get_raw_report()  local
565 	ask_count = min(count + 2, (size_t)ihid->bufsize);  in i2c_hid_get_raw_report()
569 			report_number, ihid->rawbuf, ask_count);  in i2c_hid_get_raw_report()
574 	ret_count = ihid->rawbuf[0] | (ihid->rawbuf[1] << 8);  in i2c_hid_get_raw_report()
583 	memcpy(buf, ihid->rawbuf + 2, count);  in i2c_hid_get_raw_report()
639 	struct i2c_hid *ihid = i2c_get_clientdata(client);  in i2c_hid_parse()  local
640 	struct i2c_hid_desc *hdesc = &ihid->hdesc;  in i2c_hid_parse()
646 	i2c_hid_dbg(ihid, "entering %s\n", __func__);  in i2c_hid_parse()
670 	i2c_hid_dbg(ihid, "asking HID report descriptor\n");  in i2c_hid_parse()
679 	i2c_hid_dbg(ihid, "Report Descriptor: %*ph\n", rsize, rdesc);  in i2c_hid_parse()
694 	struct i2c_hid *ihid = i2c_get_clientdata(client);  in i2c_hid_start()  local
702 	if (bufsize > ihid->bufsize) {  in i2c_hid_start()
703 		i2c_hid_free_buffers(ihid);  in i2c_hid_start()
705 		ret = i2c_hid_alloc_buffers(ihid, bufsize);  in i2c_hid_start()
725 	struct i2c_hid *ihid = i2c_get_clientdata(client);  in i2c_hid_open()  local
735 		set_bit(I2C_HID_STARTED, &ihid->flags);  in i2c_hid_open()
745 	struct i2c_hid *ihid = i2c_get_clientdata(client);  in i2c_hid_close()  local
753 		clear_bit(I2C_HID_STARTED, &ihid->flags);  in i2c_hid_close()
764 	struct i2c_hid *ihid = i2c_get_clientdata(client);  in i2c_hid_power()  local
766 	i2c_hid_dbg(ihid, "%s lvl:%d\n", __func__, lvl);  in i2c_hid_power()
792 	struct i2c_hid *ihid = i2c_get_clientdata(client);  in i2c_hid_init_irq()  local
795 	dev_dbg(&client->dev, "Requesting IRQ: %d\n", ihid->irq);  in i2c_hid_init_irq()
797 	ret = request_threaded_irq(ihid->irq, NULL, i2c_hid_irq,  in i2c_hid_init_irq()
799 			client->name, ihid);  in i2c_hid_init_irq()
804 			client->name, ihid->irq, ret);  in i2c_hid_init_irq()
812 static int i2c_hid_fetch_hid_descriptor(struct i2c_hid *ihid)  in i2c_hid_fetch_hid_descriptor()  argument
814 	struct i2c_client *client = ihid->client;  in i2c_hid_fetch_hid_descriptor()
815 	struct i2c_hid_desc *hdesc = &ihid->hdesc;  in i2c_hid_fetch_hid_descriptor()
820 	i2c_hid_dbg(ihid, "Fetching the HID descriptor\n");  in i2c_hid_fetch_hid_descriptor()
821 	ret = i2c_hid_command(client, &hid_descr_cmd, ihid->hdesc_buffer,  in i2c_hid_fetch_hid_descriptor()
846 	i2c_hid_dbg(ihid, "HID Descriptor: %*ph\n", dsize, ihid->hdesc_buffer);  in i2c_hid_fetch_hid_descriptor()
944 	struct i2c_hid *ihid;  in i2c_hid_probe()  local
951 	ihid = kzalloc(sizeof(struct i2c_hid), GFP_KERNEL);  in i2c_hid_probe()
952 	if (!ihid)  in i2c_hid_probe()
956 		ret = i2c_hid_of_probe(client, &ihid->pdata);  in i2c_hid_probe()
960 		ret = i2c_hid_acpi_pdata(client, &ihid->pdata);  in i2c_hid_probe()
967 		ihid->pdata = *platform_data;  in i2c_hid_probe()
971 		ihid->irq = client->irq;  in i2c_hid_probe()
973 		ihid->desc = gpiod_get(&client->dev, NULL, GPIOD_IN);  in i2c_hid_probe()
974 		if (IS_ERR(ihid->desc)) {  in i2c_hid_probe()
976 			return PTR_ERR(ihid->desc);  in i2c_hid_probe()
979 		ihid->irq = gpiod_to_irq(ihid->desc);  in i2c_hid_probe()
980 		if (ihid->irq < 0) {  in i2c_hid_probe()
981 			gpiod_put(ihid->desc);  in i2c_hid_probe()
983 			return ihid->irq;  in i2c_hid_probe()
987 	i2c_set_clientdata(client, ihid);  in i2c_hid_probe()
989 	ihid->client = client;  in i2c_hid_probe()
991 	hidRegister = ihid->pdata.hid_descriptor_address;  in i2c_hid_probe()
992 	ihid->wHIDDescRegister = cpu_to_le16(hidRegister);  in i2c_hid_probe()
994 	init_waitqueue_head(&ihid->wait);  in i2c_hid_probe()
999 	ret = i2c_hid_alloc_buffers(ihid, HID_MIN_BUFFER_SIZE);  in i2c_hid_probe()
1007 	ret = i2c_hid_fetch_hid_descriptor(ihid);  in i2c_hid_probe()
1021 	ihid->hid = hid;  in i2c_hid_probe()
1028 	hid->version = le16_to_cpu(ihid->hdesc.bcdVersion);  in i2c_hid_probe()
1029 	hid->vendor = le16_to_cpu(ihid->hdesc.wVendorID);  in i2c_hid_probe()
1030 	hid->product = le16_to_cpu(ihid->hdesc.wProductID);  in i2c_hid_probe()
1049 	free_irq(ihid->irq, ihid);  in i2c_hid_probe()
1056 	if (ihid->desc)  in i2c_hid_probe()
1057 		gpiod_put(ihid->desc);  in i2c_hid_probe()
1059 	i2c_hid_free_buffers(ihid);  in i2c_hid_probe()
1060 	kfree(ihid);  in i2c_hid_probe()
1066 	struct i2c_hid *ihid = i2c_get_clientdata(client);  in i2c_hid_remove()  local
1074 	hid = ihid->hid;  in i2c_hid_remove()
1077 	free_irq(ihid->irq, ihid);  in i2c_hid_remove()
1079 	if (ihid->bufsize)  in i2c_hid_remove()
1080 		i2c_hid_free_buffers(ihid);  in i2c_hid_remove()
1082 	if (ihid->desc)  in i2c_hid_remove()
1083 		gpiod_put(ihid->desc);  in i2c_hid_remove()
1085 	kfree(ihid);  in i2c_hid_remove()
1096 	struct i2c_hid *ihid = i2c_get_clientdata(client);  in i2c_hid_suspend()  local
1097 	struct hid_device *hid = ihid->hid;  in i2c_hid_suspend()
1100 	disable_irq(ihid->irq);  in i2c_hid_suspend()
1102 		enable_irq_wake(ihid->irq);  in i2c_hid_suspend()
1117 	struct i2c_hid *ihid = i2c_get_clientdata(client);  in i2c_hid_resume()  local
1118 	struct hid_device *hid = ihid->hid;  in i2c_hid_resume()
1120 	enable_irq(ihid->irq);  in i2c_hid_resume()
1126 		disable_irq_wake(ihid->irq);  in i2c_hid_resume()
1141 	struct i2c_hid *ihid = i2c_get_clientdata(client);  in i2c_hid_runtime_suspend()  local
1144 	disable_irq(ihid->irq);  in i2c_hid_runtime_suspend()
1151 	struct i2c_hid *ihid = i2c_get_clientdata(client);  in i2c_hid_runtime_resume()  local
1153 	enable_irq(ihid->irq);  in i2c_hid_runtime_resume()