drivers/hid/hid-cp2112.c

159 	struct hid_device *hdev;
184 	struct hid_device *hdev = dev->hdev;
190 	ret = hid_hw_raw_request(hdev, CP2112_GPIO_CONFIG, buf,
194 		hid_err(hdev, "error requesting GPIO config: %d\n", ret);
203 	ret = hid_hw_raw_request(hdev, CP2112_GPIO_CONFIG, buf,
207 		hid_err(hdev, "error setting GPIO config: %d\n", ret);
223 	struct hid_device *hdev = dev->hdev;
233 	ret = hid_hw_raw_request(hdev, CP2112_GPIO_SET, buf,
237 		hid_err(hdev, "error setting GPIO values: %d\n", ret);
245 	struct hid_device *hdev = dev->hdev;
251 	ret = hid_hw_raw_request(hdev, CP2112_GPIO_GET, buf,
255 		hid_err(hdev, "error requesting GPIO values: %d\n", ret);
283 	struct hid_device *hdev = dev->hdev;
289 	ret = hid_hw_raw_request(hdev, CP2112_GPIO_CONFIG, buf,
293 		hid_err(hdev, "error requesting GPIO config: %d\n", ret);
300 	ret = hid_hw_raw_request(hdev, CP2112_GPIO_CONFIG, buf,
304 		hid_err(hdev, "error setting GPIO config: %d\n", ret);
323 static int cp2112_hid_get(struct hid_device *hdev, unsigned char report_number,
333 	ret = hid_hw_raw_request(hdev, report_number, buf, count,
340 static int cp2112_hid_output(struct hid_device *hdev, u8 *data, size_t count,
351 		ret = hid_hw_output_report(hdev, buf, count);
353 		ret = hid_hw_raw_request(hdev, buf[0], buf, count, report_type,
385 	struct hid_device *hdev = dev->hdev;
393 	ret = cp2112_hid_output(hdev, buf, 2, HID_OUTPUT_REPORT);
395 		hid_warn(hdev, "Error requesting status: %d\n", ret);
408 	struct hid_device *hdev = dev->hdev;
419 	ret = cp2112_hid_output(hdev, &report.report, sizeof(report),
422 		hid_warn(hdev, "Error requesting data: %d\n", ret);
430 	hid_dbg(hdev, "read %d of %zd bytes requested\n",
524 	struct hid_device *hdev = dev->hdev;
532 	hid_dbg(hdev, "I2C %d messages\n", num);
535 		hid_dbg(hdev, "I2C %s %#04x len %d\n",
551 		hid_dbg(hdev, "I2C write-read %#04x wlen %d rlen %d\n",
560 		hid_err(hdev,
565 	ret = hid_hw_power(hdev, PM_HINT_FULLON);
567 		hid_err(hdev, "power management error: %d\n", ret);
571 	ret = cp2112_hid_output(hdev, buf, count, HID_OUTPUT_REPORT);
573 		hid_warn(hdev, "Error starting transaction: %d\n", ret);
587 		hid_warn(hdev, "Transfer timed out, cancelling.\n");
591 		ret = cp2112_hid_output(hdev, buf, 2, HID_OUTPUT_REPORT);
593 			hid_warn(hdev, "Error cancelling transaction: %d\n",
605 			hid_err(hdev, "read returned 0\n");
619 			hid_err(hdev, "long read: %d > %zd\n",
630 	hid_hw_power(hdev, PM_HINT_NORMAL);
631 	hid_dbg(hdev, "I2C transfer finished: %d\n", ret);
640 	struct hid_device *hdev = dev->hdev;
648 	hid_dbg(hdev, "%s addr 0x%x flags 0x%x cmd 0x%x size %d\n",
723 		hid_warn(hdev, "Unsupported transaction %d\n", size);
730 	ret = hid_hw_power(hdev, PM_HINT_FULLON);
732 		hid_err(hdev, "power management error: %d\n", ret);
736 	ret = cp2112_hid_output(hdev, buf, count, HID_OUTPUT_REPORT);
738 		hid_warn(hdev, "Error starting transaction: %d\n", ret);
752 		hid_warn(hdev, "Transfer timed out, cancelling.\n");
756 		ret = cp2112_hid_output(hdev, buf, 2, HID_OUTPUT_REPORT);
758 			hid_warn(hdev, "Error cancelling transaction: %d\n",
777 		hid_warn(hdev, "short read: %d < %zd\n", ret, read_length);
810 	hid_hw_power(hdev, PM_HINT_NORMAL);
811 	hid_dbg(hdev, "transfer finished: %d\n", ret);
833 static int cp2112_get_usb_config(struct hid_device *hdev,
838 	ret = cp2112_hid_get(hdev, CP2112_USB_CONFIG, (u8 *)cfg, sizeof(*cfg),
841 		hid_err(hdev, "error reading usb config: %d\n", ret);
850 static int cp2112_set_usb_config(struct hid_device *hdev,
857 	ret = cp2112_hid_output(hdev, (u8 *)cfg, sizeof(*cfg),
860 		hid_err(hdev, "error writing usb config: %d\n", ret);
869 static void chmod_sysfs_attrs(struct hid_device *hdev);
876 	struct hid_device *hdev = to_hid_device(kdev); \
878 	int ret = cp2112_get_usb_config(hdev, &cfg); \
882 	ret = cp2112_set_usb_config(hdev, &cfg); \
885 	chmod_sysfs_attrs(hdev); \
891 	struct hid_device *hdev = to_hid_device(kdev); \
893 	int ret = cp2112_get_usb_config(hdev, &cfg); \
950 	struct hid_device *hdev = to_hid_device(kdev);
962 	ret = cp2112_hid_output(hdev, &report.report, report.length + 1,
965 		hid_err(hdev, "error writing %s string: %d\n", kattr->attr.name,
972 	chmod_sysfs_attrs(hdev);
979 	struct hid_device *hdev = to_hid_device(kdev);
984 	ret = cp2112_hid_get(hdev, number, (u8 *)&report.contents,
987 		hid_err(hdev, "error reading %s string: %d\n", kattr->attr.name,
995 		hid_err(hdev, "invalid %s string length: %d\n",
1046 static void chmod_sysfs_attrs(struct hid_device *hdev)
1052 	ret = cp2112_hid_get(hdev, CP2112_LOCK_BYTE, buf, sizeof(buf),
1055 		hid_err(hdev, "error reading lock byte: %d\n", ret);
1061 		ret = sysfs_chmod_file(&hdev->dev.kobj, *attr, mode);
1063 			hid_err(hdev, "error chmoding sysfs file %s\n",
1193 static int cp2112_probe(struct hid_device *hdev, const struct hid_device_id *id)
1201 	dev = devm_kzalloc(&hdev->dev, sizeof(*dev), GFP_KERNEL);
1205 	dev->in_out_buffer = devm_kzalloc(&hdev->dev, CP2112_REPORT_MAX_LENGTH,
1212 	ret = hid_parse(hdev);
1214 		hid_err(hdev, "parse failed\n");
1218 	ret = hid_hw_start(hdev, HID_CONNECT_HIDRAW);
1220 		hid_err(hdev, "hw start failed\n");
1224 	ret = hid_hw_open(hdev);
1226 		hid_err(hdev, "hw open failed\n");
1230 	ret = hid_hw_power(hdev, PM_HINT_FULLON);
1232 		hid_err(hdev, "power management error: %d\n", ret);
1236 	ret = cp2112_hid_get(hdev, CP2112_GET_VERSION_INFO, buf, sizeof(buf),
1239 		hid_err(hdev, "error requesting version\n");
1245 	hid_info(hdev, "Part Number: 0x%02X Device Version: 0x%02X\n",
1248 	ret = cp2112_hid_get(hdev, CP2112_SMBUS_CONFIG, (u8 *)&config,
1251 		hid_err(hdev, "error requesting SMBus config\n");
1259 	ret = cp2112_hid_output(hdev, (u8 *)&config, sizeof(config),
1262 		hid_err(hdev, "error setting SMBus config\n");
1268 	hid_set_drvdata(hdev, (void *)dev);
1269 	dev->hdev		= hdev;
1274 	dev->adap.dev.parent	= &hdev->dev;
1277 		 ((struct hidraw *)hdev->hidraw)->minor);
1281 	hid_device_io_start(hdev);
1283 	hid_device_io_stop(hdev);
1286 		hid_err(hdev, "error registering i2c adapter\n");
1290 	hid_dbg(hdev, "adapter registered\n");
1300 	dev->gc.parent			= &hdev->dev;
1316 		hid_err(hdev, "error registering gpio chip\n");
1320 	ret = sysfs_create_group(&hdev->dev.kobj, &cp2112_attr_group);
1322 		hid_err(hdev, "error creating sysfs attrs\n");
1326 	chmod_sysfs_attrs(hdev);
1327 	hid_hw_power(hdev, PM_HINT_NORMAL);
1336 	hid_hw_power(hdev, PM_HINT_NORMAL);
1338 	hid_hw_close(hdev);
1340 	hid_hw_stop(hdev);
1344 static void cp2112_remove(struct hid_device *hdev)
1346 	struct cp2112_device *dev = hid_get_drvdata(hdev);
1348 	sysfs_remove_group(&hdev->dev.kobj, &cp2112_attr_group);
1363 	hid_hw_close(hdev);
1364 	hid_hw_stop(hdev);
1367 static int cp2112_raw_event(struct hid_device *hdev, struct hid_report *report,
1370 	struct cp2112_device *dev = hid_get_drvdata(hdev);
1375 		hid_dbg(hdev, "xfer status: %02x %02x %04x %04x\n",
1408 		hid_dbg(hdev, "read response: %02x %02x\n", data[1], data[2]);
1418 		hid_err(hdev, "unknown report\n");