cp210x.c (d149d6ae17197ce23e2cd6bc5fcdacf7b593e55e) cp210x.c (7eac35ea29dc54cbc8399de84c9bf16553575b89)
1/*
2 * Silicon Laboratories CP210x USB to RS232 serial adaptor driver
3 *
4 * Copyright (C) 2005 Craig Shelley (craig@microtron.org.uk)
5 *
6 * This program is free software; you can redistribute it and/or
7 * modify it under the terms of the GNU General Public License version
8 * 2 as published by the Free Software Foundation.

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347
348/* Part number definitions */
349#define CP210X_PARTNUM_CP2101 0x01
350#define CP210X_PARTNUM_CP2102 0x02
351#define CP210X_PARTNUM_CP2103 0x03
352#define CP210X_PARTNUM_CP2104 0x04
353#define CP210X_PARTNUM_CP2105 0x05
354#define CP210X_PARTNUM_CP2108 0x08
1/*
2 * Silicon Laboratories CP210x USB to RS232 serial adaptor driver
3 *
4 * Copyright (C) 2005 Craig Shelley (craig@microtron.org.uk)
5 *
6 * This program is free software; you can redistribute it and/or
7 * modify it under the terms of the GNU General Public License version
8 * 2 as published by the Free Software Foundation.

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347
348/* Part number definitions */
349#define CP210X_PARTNUM_CP2101 0x01
350#define CP210X_PARTNUM_CP2102 0x02
351#define CP210X_PARTNUM_CP2103 0x03
352#define CP210X_PARTNUM_CP2104 0x04
353#define CP210X_PARTNUM_CP2105 0x05
354#define CP210X_PARTNUM_CP2108 0x08
355#define CP210X_PARTNUM_UNKNOWN 0xFF
355
356/* CP210X_GET_COMM_STATUS returns these 0x13 bytes */
357struct cp210x_comm_status {
358 __le32 ulErrors;
359 __le32 ulHoldReasons;
360 __le32 ulAmountInInQueue;
361 __le32 ulAmountInOutQueue;
362 u8 bEofReceived;

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1486
1487 priv = kzalloc(sizeof(*priv), GFP_KERNEL);
1488 if (!priv)
1489 return -ENOMEM;
1490
1491 result = cp210x_read_vendor_block(serial, REQTYPE_DEVICE_TO_HOST,
1492 CP210X_GET_PARTNUM, &priv->partnum,
1493 sizeof(priv->partnum));
356
357/* CP210X_GET_COMM_STATUS returns these 0x13 bytes */
358struct cp210x_comm_status {
359 __le32 ulErrors;
360 __le32 ulHoldReasons;
361 __le32 ulAmountInInQueue;
362 __le32 ulAmountInOutQueue;
363 u8 bEofReceived;

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1487
1488 priv = kzalloc(sizeof(*priv), GFP_KERNEL);
1489 if (!priv)
1490 return -ENOMEM;
1491
1492 result = cp210x_read_vendor_block(serial, REQTYPE_DEVICE_TO_HOST,
1493 CP210X_GET_PARTNUM, &priv->partnum,
1494 sizeof(priv->partnum));
1494 if (result < 0)
1495 goto err_free_priv;
1495 if (result < 0) {
1496 dev_warn(&serial->interface->dev,
1497 "querying part number failed\n");
1498 priv->partnum = CP210X_PARTNUM_UNKNOWN;
1499 }
1496
1497 usb_set_serial_data(serial, priv);
1498
1499 if (priv->partnum == CP210X_PARTNUM_CP2105) {
1500 result = cp2105_shared_gpio_init(serial);
1501 if (result < 0) {
1502 dev_err(&serial->interface->dev,
1503 "GPIO initialisation failed, continuing without GPIO support\n");
1504 }
1505 }
1506
1507 return 0;
1500
1501 usb_set_serial_data(serial, priv);
1502
1503 if (priv->partnum == CP210X_PARTNUM_CP2105) {
1504 result = cp2105_shared_gpio_init(serial);
1505 if (result < 0) {
1506 dev_err(&serial->interface->dev,
1507 "GPIO initialisation failed, continuing without GPIO support\n");
1508 }
1509 }
1510
1511 return 0;
1508err_free_priv:
1509 kfree(priv);
1510
1511 return result;
1512}
1513
1514static void cp210x_disconnect(struct usb_serial *serial)
1515{
1516 cp210x_gpio_remove(serial);
1517}
1518
1519static void cp210x_release(struct usb_serial *serial)

--- 12 unchanged lines hidden --- 		1512}
1513
1514static void cp210x_disconnect(struct usb_serial *serial)
1515{
1516 cp210x_gpio_remove(serial);
1517}
1518
1519static void cp210x_release(struct usb_serial *serial)

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