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Greg Kroah-Hartman5fd54ac2017-11-03 11:28:30 +01001// SPDX-License-Identifier: GPL-2.0
Linus Torvalds1da177e2005-04-16 15:20:36 -07002/*
3 * Prolific PL2303 USB to serial adaptor driver
4 *
Greg Kroah-Hartman4d0dce32007-06-12 11:43:37 -07005 * Copyright (C) 2001-2007 Greg Kroah-Hartman (greg@kroah.com)
Linus Torvalds1da177e2005-04-16 15:20:36 -07006 * Copyright (C) 2003 IBM Corp.
7 *
8 * Original driver for 2.2.x by anonymous
9 *
Mauro Carvalho Chehabecefae62019-06-18 18:05:38 -030010 * See Documentation/usb/usb-serial.rst for more information on using this
Alan Cox3a0f43e2008-07-22 11:14:49 +010011 * driver
Linus Torvalds1da177e2005-04-16 15:20:36 -070012 */
13
Linus Torvalds1da177e2005-04-16 15:20:36 -070014#include <linux/kernel.h>
15#include <linux/errno.h>
Linus Torvalds1da177e2005-04-16 15:20:36 -070016#include <linux/slab.h>
17#include <linux/tty.h>
18#include <linux/tty_driver.h>
19#include <linux/tty_flip.h>
20#include <linux/serial.h>
21#include <linux/module.h>
22#include <linux/moduleparam.h>
23#include <linux/spinlock.h>
Alan Cox3a0f43e2008-07-22 11:14:49 +010024#include <linux/uaccess.h>
Linus Torvalds1da177e2005-04-16 15:20:36 -070025#include <linux/usb.h>
Greg Kroah-Hartmana9698882006-07-11 21:22:58 -070026#include <linux/usb/serial.h>
Johan Hovoldb2d6d982013-06-26 16:47:28 +020027#include <asm/unaligned.h>
Linus Torvalds1da177e2005-04-16 15:20:36 -070028#include "pl2303.h"
29
Johan Hovold228e4102013-12-29 19:23:05 +010030
31#define PL2303_QUIRK_UART_STATE_IDX0 BIT(0)
Johan Hovold23c6acb2013-12-29 19:23:08 +010032#define PL2303_QUIRK_LEGACY BIT(1)
Johan Hovold9d717272017-03-16 17:13:35 +010033#define PL2303_QUIRK_ENDPOINT_HACK BIT(2)
Johan Hovold228e4102013-12-29 19:23:05 +010034
Németh Márton7d40d7e2010-01-10 15:34:24 +010035static const struct usb_device_id id_table[] = {
Johan Hovold9d717272017-03-16 17:13:35 +010036 { USB_DEVICE(PL2303_VENDOR_ID, PL2303_PRODUCT_ID),
37 .driver_info = PL2303_QUIRK_ENDPOINT_HACK },
Linus Torvalds1da177e2005-04-16 15:20:36 -070038 { USB_DEVICE(PL2303_VENDOR_ID, PL2303_PRODUCT_ID_RSAQ2) },
Peter Moulder3d861492006-06-19 22:47:49 +100039 { USB_DEVICE(PL2303_VENDOR_ID, PL2303_PRODUCT_ID_DCU11) },
Linus Torvalds1da177e2005-04-16 15:20:36 -070040 { USB_DEVICE(PL2303_VENDOR_ID, PL2303_PRODUCT_ID_RSAQ3) },
Greg Kroah-Hartmand08dd3f2018-01-25 09:48:55 +010041 { USB_DEVICE(PL2303_VENDOR_ID, PL2303_PRODUCT_ID_CHILITAG) },
Linus Torvalds1da177e2005-04-16 15:20:36 -070042 { USB_DEVICE(PL2303_VENDOR_ID, PL2303_PRODUCT_ID_PHAROS) },
Max Arnoldb483b6a2008-03-20 16:43:56 +070043 { USB_DEVICE(PL2303_VENDOR_ID, PL2303_PRODUCT_ID_ALDIGA) },
Steve Murphy4be2fa12008-05-23 23:39:05 +053044 { USB_DEVICE(PL2303_VENDOR_ID, PL2303_PRODUCT_ID_MMX) },
Greg Kroah-Hartman727df352008-07-02 15:25:41 -050045 { USB_DEVICE(PL2303_VENDOR_ID, PL2303_PRODUCT_ID_GPRS) },
Simone Contini18344a12010-04-12 23:25:10 +020046 { USB_DEVICE(PL2303_VENDOR_ID, PL2303_PRODUCT_ID_HCR331) },
Dario Lombardo96a3e792011-01-21 15:35:19 +010047 { USB_DEVICE(PL2303_VENDOR_ID, PL2303_PRODUCT_ID_MOTOROLA) },
Greg KH91fcb1ce2014-08-15 15:22:21 +080048 { USB_DEVICE(PL2303_VENDOR_ID, PL2303_PRODUCT_ID_ZTEK) },
Charles Yeh4dcf9dd2019-01-15 23:13:56 +080049 { USB_DEVICE(PL2303_VENDOR_ID, PL2303_PRODUCT_ID_TB) },
Linus Torvalds1da177e2005-04-16 15:20:36 -070050 { USB_DEVICE(IODATA_VENDOR_ID, IODATA_PRODUCT_ID) },
Masakazu Mokuno8a28dea2007-10-23 13:51:57 +090051 { USB_DEVICE(IODATA_VENDOR_ID, IODATA_PRODUCT_ID_RSAQ5) },
Johan Hovold9d717272017-03-16 17:13:35 +010052 { USB_DEVICE(ATEN_VENDOR_ID, ATEN_PRODUCT_ID),
53 .driver_info = PL2303_QUIRK_ENDPOINT_HACK },
Greg Kroah-Hartman3b6bcd32017-08-10 11:54:12 -070054 { USB_DEVICE(ATEN_VENDOR_ID, ATEN_PRODUCT_UC485),
55 .driver_info = PL2303_QUIRK_ENDPOINT_HACK },
Movie Song29c692c92018-07-19 02:20:48 +080056 { USB_DEVICE(ATEN_VENDOR_ID, ATEN_PRODUCT_UC232B),
57 .driver_info = PL2303_QUIRK_ENDPOINT_HACK },
Marcel J.E. Mold07830d2017-01-30 19:26:40 +010058 { USB_DEVICE(ATEN_VENDOR_ID, ATEN_PRODUCT_ID2) },
Linus Torvalds1da177e2005-04-16 15:20:36 -070059 { USB_DEVICE(ATEN_VENDOR_ID2, ATEN_PRODUCT_ID) },
60 { USB_DEVICE(ELCOM_VENDOR_ID, ELCOM_PRODUCT_ID) },
61 { USB_DEVICE(ELCOM_VENDOR_ID, ELCOM_PRODUCT_ID_UCSGT) },
62 { USB_DEVICE(ITEGNO_VENDOR_ID, ITEGNO_PRODUCT_ID) },
Wang Jun58381712006-04-19 16:32:07 +080063 { USB_DEVICE(ITEGNO_VENDOR_ID, ITEGNO_PRODUCT_ID_2080) },
Linus Torvalds1da177e2005-04-16 15:20:36 -070064 { USB_DEVICE(MA620_VENDOR_ID, MA620_PRODUCT_ID) },
65 { USB_DEVICE(RATOC_VENDOR_ID, RATOC_PRODUCT_ID) },
66 { USB_DEVICE(TRIPP_VENDOR_ID, TRIPP_PRODUCT_ID) },
67 { USB_DEVICE(RADIOSHACK_VENDOR_ID, RADIOSHACK_PRODUCT_ID) },
68 { USB_DEVICE(DCU10_VENDOR_ID, DCU10_PRODUCT_ID) },
69 { USB_DEVICE(SITECOM_VENDOR_ID, SITECOM_PRODUCT_ID) },
70 { USB_DEVICE(ALCATEL_VENDOR_ID, ALCATEL_PRODUCT_ID) },
Johan Hovold228e4102013-12-29 19:23:05 +010071 { USB_DEVICE(SIEMENS_VENDOR_ID, SIEMENS_PRODUCT_ID_SX1),
72 .driver_info = PL2303_QUIRK_UART_STATE_IDX0 },
73 { USB_DEVICE(SIEMENS_VENDOR_ID, SIEMENS_PRODUCT_ID_X65),
74 .driver_info = PL2303_QUIRK_UART_STATE_IDX0 },
75 { USB_DEVICE(SIEMENS_VENDOR_ID, SIEMENS_PRODUCT_ID_X75),
76 .driver_info = PL2303_QUIRK_UART_STATE_IDX0 },
Johan Hovold9d717272017-03-16 17:13:35 +010077 { USB_DEVICE(SIEMENS_VENDOR_ID, SIEMENS_PRODUCT_ID_EF81),
78 .driver_info = PL2303_QUIRK_ENDPOINT_HACK },
Alan Cox912299f2009-04-06 17:35:12 +010079 { USB_DEVICE(BENQ_VENDOR_ID, BENQ_PRODUCT_ID_S81) }, /* Benq/Siemens S81 */
Peter Favrholdtacbb36f2005-04-18 17:39:32 -070080 { USB_DEVICE(SYNTECH_VENDOR_ID, SYNTECH_PRODUCT_ID) },
Christian Lindnerc6c27722006-02-01 14:10:52 +010081 { USB_DEVICE(NOKIA_CA42_VENDOR_ID, NOKIA_CA42_PRODUCT_ID) },
82 { USB_DEVICE(CA_42_CA42_VENDOR_ID, CA_42_CA42_PRODUCT_ID) },
Denis MONTERRAT6cceb052006-01-19 14:52:38 +010083 { USB_DEVICE(SAGEM_VENDOR_ID, SAGEM_PRODUCT_ID) },
Christian Lindnerc6c27722006-02-01 14:10:52 +010084 { USB_DEVICE(LEADTEK_VENDOR_ID, LEADTEK_9531_PRODUCT_ID) },
Dick Streefland491b04c2006-03-01 00:53:33 -080085 { USB_DEVICE(SPEEDDRAGON_VENDOR_ID, SPEEDDRAGON_PRODUCT_ID) },
Matthew Meno3b928472006-06-21 15:25:53 -040086 { USB_DEVICE(DATAPILOT_U2_VENDOR_ID, DATAPILOT_U2_PRODUCT_ID) },
Kim Oldfieldb7aa94b2006-07-25 15:54:59 +100087 { USB_DEVICE(BELKIN_VENDOR_ID, BELKIN_PRODUCT_ID) },
Johan Hovold9d717272017-03-16 17:13:35 +010088 { USB_DEVICE(ALCOR_VENDOR_ID, ALCOR_PRODUCT_ID),
89 .driver_info = PL2303_QUIRK_ENDPOINT_HACK },
YOSHIFUJI Hideaki2d94b982007-01-26 22:51:38 +090090 { USB_DEVICE(WS002IN_VENDOR_ID, WS002IN_PRODUCT_ID) },
Magnus Damm9e3285d2007-11-08 16:45:46 +090091 { USB_DEVICE(COREGA_VENDOR_ID, COREGA_PRODUCT_ID) },
Damien Stuartcc311ee2008-01-06 13:51:39 -050092 { USB_DEVICE(YCCABLE_VENDOR_ID, YCCABLE_PRODUCT_ID) },
Matthew Arnold7c992002008-12-13 22:42:53 +110093 { USB_DEVICE(SUPERIAL_VENDOR_ID, SUPERIAL_PRODUCT_ID) },
Mike Provencheraf4b8512008-12-16 14:30:14 -060094 { USB_DEVICE(HP_VENDOR_ID, HP_LD220_PRODUCT_ID) },
Scott Chen8d503f22018-12-13 06:01:47 -050095 { USB_DEVICE(HP_VENDOR_ID, HP_LD220TA_PRODUCT_ID) },
Aaron Sandersb16c02f2014-03-31 15:54:21 +020096 { USB_DEVICE(HP_VENDOR_ID, HP_LD960_PRODUCT_ID) },
Scott Chen8d503f22018-12-13 06:01:47 -050097 { USB_DEVICE(HP_VENDOR_ID, HP_LD960TA_PRODUCT_ID) },
Aaron Sandersb16c02f2014-03-31 15:54:21 +020098 { USB_DEVICE(HP_VENDOR_ID, HP_LCM220_PRODUCT_ID) },
99 { USB_DEVICE(HP_VENDOR_ID, HP_LCM960_PRODUCT_ID) },
Scott Chen8d503f22018-12-13 06:01:47 -0500100 { USB_DEVICE(HP_VENDOR_ID, HP_LM920_PRODUCT_ID) },
101 { USB_DEVICE(HP_VENDOR_ID, HP_LM940_PRODUCT_ID) },
102 { USB_DEVICE(HP_VENDOR_ID, HP_TD620_PRODUCT_ID) },
Gianpaolo Cugola8540d662009-06-05 22:57:52 +0200103 { USB_DEVICE(CRESSI_VENDOR_ID, CRESSI_EDY_PRODUCT_ID) },
Jef Driesenf36ecd52010-08-09 15:55:32 +0200104 { USB_DEVICE(ZEAGLE_VENDOR_ID, ZEAGLE_N2ITION3_PRODUCT_ID) },
Khanh-Dang Nguyen Thu Lam49276562009-07-28 19:41:17 +0200105 { USB_DEVICE(SONY_VENDOR_ID, SONY_QN3USB_PRODUCT_ID) },
Pawel Ludwikow35904e62009-08-27 14:15:50 +0200106 { USB_DEVICE(SANWA_VENDOR_ID, SANWA_PRODUCT_ID) },
Manuel Jander9a61d722010-03-29 23:51:57 +0200107 { USB_DEVICE(ADLINK_VENDOR_ID, ADLINK_ND6530_PRODUCT_ID) },
Eric Benoit598f0b72011-09-24 02:04:50 -0400108 { USB_DEVICE(SMART_VENDOR_ID, SMART_PRODUCT_ID) },
Chris Packhamc5f81652019-05-14 17:35:42 +1200109 { USB_DEVICE(AT_VENDOR_ID, AT_VTKIT3_PRODUCT_ID) },
Linus Torvalds1da177e2005-04-16 15:20:36 -0700110 { } /* Terminating entry */
111};
112
Thiago Galesi372db8a2006-07-31 15:39:27 -0300113MODULE_DEVICE_TABLE(usb, id_table);
Linus Torvalds1da177e2005-04-16 15:20:36 -0700114
Linus Torvalds1da177e2005-04-16 15:20:36 -0700115#define SET_LINE_REQUEST_TYPE 0x21
116#define SET_LINE_REQUEST 0x20
117
118#define SET_CONTROL_REQUEST_TYPE 0x21
119#define SET_CONTROL_REQUEST 0x22
120#define CONTROL_DTR 0x01
121#define CONTROL_RTS 0x02
122
123#define BREAK_REQUEST_TYPE 0x21
Alan Cox3a0f43e2008-07-22 11:14:49 +0100124#define BREAK_REQUEST 0x23
Linus Torvalds1da177e2005-04-16 15:20:36 -0700125#define BREAK_ON 0xffff
126#define BREAK_OFF 0x0000
127
128#define GET_LINE_REQUEST_TYPE 0xa1
129#define GET_LINE_REQUEST 0x21
130
131#define VENDOR_WRITE_REQUEST_TYPE 0x40
132#define VENDOR_WRITE_REQUEST 0x01
133
134#define VENDOR_READ_REQUEST_TYPE 0xc0
135#define VENDOR_READ_REQUEST 0x01
136
Johan Hovold228e4102013-12-29 19:23:05 +0100137#define UART_STATE_INDEX 8
Johan Hovolddbfd2862014-01-02 22:49:22 +0100138#define UART_STATE_MSR_MASK 0x8b
Linus Torvalds1da177e2005-04-16 15:20:36 -0700139#define UART_STATE_TRANSIENT_MASK 0x74
140#define UART_DCD 0x01
141#define UART_DSR 0x02
142#define UART_BREAK_ERROR 0x04
143#define UART_RING 0x08
144#define UART_FRAME_ERROR 0x10
145#define UART_PARITY_ERROR 0x20
146#define UART_OVERRUN_ERROR 0x40
147#define UART_CTS 0x80
148
Johan Hovoldf64c3ab2019-04-02 10:19:31 +0200149#define PL2303_FLOWCTRL_MASK 0xf0
150
Johan Hovold52772a72015-02-26 16:50:24 +0100151static void pl2303_set_break(struct usb_serial_port *port, bool enable);
Linus Torvalds1da177e2005-04-16 15:20:36 -0700152
153enum pl2303_type {
Johan Hovold7f966ac2013-12-29 19:23:07 +0100154 TYPE_01, /* Type 0 and 1 (difference unknown) */
155 TYPE_HX, /* HX version of the pl2303 chip */
Johan Hovold359defd2013-12-29 19:23:09 +0100156 TYPE_COUNT
157};
158
159struct pl2303_type_data {
160 speed_t max_baud_rate;
161 unsigned long quirks;
Johan Hovold68270da2019-04-02 10:19:30 +0200162 unsigned int no_autoxonxoff:1;
Linus Torvalds1da177e2005-04-16 15:20:36 -0700163};
164
Johan Hovold8bf769e2012-10-15 15:47:21 +0200165struct pl2303_serial_private {
Johan Hovoldb6934682014-01-02 22:49:20 +0100166 const struct pl2303_type_data *type;
Johan Hovold228e4102013-12-29 19:23:05 +0100167 unsigned long quirks;
Johan Hovold8bf769e2012-10-15 15:47:21 +0200168};
169
Linus Torvalds1da177e2005-04-16 15:20:36 -0700170struct pl2303_private {
171 spinlock_t lock;
Linus Torvalds1da177e2005-04-16 15:20:36 -0700172 u8 line_control;
173 u8 line_status;
Johan Hovold623c8262013-12-29 19:22:53 +0100174
175 u8 line_settings[7];
Linus Torvalds1da177e2005-04-16 15:20:36 -0700176};
177
Johan Hovoldb6934682014-01-02 22:49:20 +0100178static const struct pl2303_type_data pl2303_type_data[TYPE_COUNT] = {
Johan Hovold359defd2013-12-29 19:23:09 +0100179 [TYPE_01] = {
Johan Hovold68270da2019-04-02 10:19:30 +0200180 .max_baud_rate = 1228800,
181 .quirks = PL2303_QUIRK_LEGACY,
182 .no_autoxonxoff = true,
Johan Hovold359defd2013-12-29 19:23:09 +0100183 },
Lauri Hintsala399aa9a2014-08-13 15:02:53 +0300184 [TYPE_HX] = {
Johan Hovold68270da2019-04-02 10:19:30 +0200185 .max_baud_rate = 12000000,
Lauri Hintsala399aa9a2014-08-13 15:02:53 +0300186 },
Johan Hovold359defd2013-12-29 19:23:09 +0100187};
188
Johan Hovold362eb022013-12-29 19:23:01 +0100189static int pl2303_vendor_read(struct usb_serial *serial, u16 value,
190 unsigned char buf[1])
Sarah Sharpeb44da02007-12-14 14:08:00 -0800191{
Johan Hovold362eb022013-12-29 19:23:01 +0100192 struct device *dev = &serial->interface->dev;
Johan Hovoldccfe8182013-12-29 19:23:00 +0100193 int res;
194
195 res = usb_control_msg(serial->dev, usb_rcvctrlpipe(serial->dev, 0),
Sarah Sharpeb44da02007-12-14 14:08:00 -0800196 VENDOR_READ_REQUEST, VENDOR_READ_REQUEST_TYPE,
Johan Hovold362eb022013-12-29 19:23:01 +0100197 value, 0, buf, 1, 100);
198 if (res != 1) {
199 dev_err(dev, "%s - failed to read [%04x]: %d\n", __func__,
200 value, res);
201 if (res >= 0)
202 res = -EIO;
Johan Hovoldccfe8182013-12-29 19:23:00 +0100203
Johan Hovold362eb022013-12-29 19:23:01 +0100204 return res;
205 }
Johan Hovoldccfe8182013-12-29 19:23:00 +0100206
Johan Hovold362eb022013-12-29 19:23:01 +0100207 dev_dbg(dev, "%s - [%04x] = %02x\n", __func__, value, buf[0]);
208
209 return 0;
Sarah Sharpeb44da02007-12-14 14:08:00 -0800210}
211
Johan Hovold362eb022013-12-29 19:23:01 +0100212static int pl2303_vendor_write(struct usb_serial *serial, u16 value, u16 index)
Sarah Sharpeb44da02007-12-14 14:08:00 -0800213{
Johan Hovold362eb022013-12-29 19:23:01 +0100214 struct device *dev = &serial->interface->dev;
Johan Hovoldccfe8182013-12-29 19:23:00 +0100215 int res;
216
Johan Hovold362eb022013-12-29 19:23:01 +0100217 dev_dbg(dev, "%s - [%04x] = %02x\n", __func__, value, index);
218
Johan Hovoldccfe8182013-12-29 19:23:00 +0100219 res = usb_control_msg(serial->dev, usb_sndctrlpipe(serial->dev, 0),
Sarah Sharpeb44da02007-12-14 14:08:00 -0800220 VENDOR_WRITE_REQUEST, VENDOR_WRITE_REQUEST_TYPE,
221 value, index, NULL, 0, 100);
Johan Hovold362eb022013-12-29 19:23:01 +0100222 if (res) {
223 dev_err(dev, "%s - failed to write [%04x]: %d\n", __func__,
224 value, res);
225 return res;
226 }
Johan Hovoldccfe8182013-12-29 19:23:00 +0100227
Johan Hovold362eb022013-12-29 19:23:01 +0100228 return 0;
Sarah Sharpeb44da02007-12-14 14:08:00 -0800229}
230
Johan Hovoldf64c3ab2019-04-02 10:19:31 +0200231static int pl2303_update_reg(struct usb_serial *serial, u8 reg, u8 mask, u8 val)
232{
233 int ret = 0;
234 u8 *buf;
235
236 buf = kmalloc(1, GFP_KERNEL);
237 if (!buf)
238 return -ENOMEM;
239
240 ret = pl2303_vendor_read(serial, reg | 0x80, buf);
241 if (ret)
242 goto out_free;
243
244 *buf &= ~mask;
245 *buf |= val & mask;
246
247 ret = pl2303_vendor_write(serial, reg, *buf);
248out_free:
249 kfree(buf);
250
251 return ret;
252}
253
Johan Hovold228e4102013-12-29 19:23:05 +0100254static int pl2303_probe(struct usb_serial *serial,
255 const struct usb_device_id *id)
256{
257 usb_set_serial_data(serial, (void *)id->driver_info);
258
259 return 0;
260}
261
Johan Hovold9d717272017-03-16 17:13:35 +0100262/*
263 * Use interrupt endpoint from first interface if available.
264 *
265 * This is needed due to the looney way its endpoints are set up.
266 */
267static int pl2303_endpoint_hack(struct usb_serial *serial,
Johan Hovold9fda6202017-03-16 17:13:34 +0100268 struct usb_serial_endpoints *epds)
269{
270 struct usb_interface *interface = serial->interface;
271 struct usb_device *dev = serial->dev;
272 struct device *ddev = &interface->dev;
273 struct usb_host_interface *iface_desc;
274 struct usb_endpoint_descriptor *endpoint;
275 unsigned int i;
276
Johan Hovold9d717272017-03-16 17:13:35 +0100277 if (interface == dev->actconfig->interface[0])
278 return 0;
Johan Hovold9fda6202017-03-16 17:13:34 +0100279
Johan Hovold9d717272017-03-16 17:13:35 +0100280 /* check out the endpoints of the other interface */
281 iface_desc = dev->actconfig->interface[0]->cur_altsetting;
282
283 for (i = 0; i < iface_desc->desc.bNumEndpoints; ++i) {
284 endpoint = &iface_desc->endpoint[i].desc;
285
286 if (!usb_endpoint_is_int_in(endpoint))
287 continue;
288
289 dev_dbg(ddev, "found interrupt in on separate interface\n");
290 if (epds->num_interrupt_in < ARRAY_SIZE(epds->interrupt_in))
291 epds->interrupt_in[epds->num_interrupt_in++] = endpoint;
Johan Hovold9fda6202017-03-16 17:13:34 +0100292 }
Johan Hovold9d717272017-03-16 17:13:35 +0100293
294 return 0;
295}
296
297static int pl2303_calc_num_ports(struct usb_serial *serial,
298 struct usb_serial_endpoints *epds)
299{
300 unsigned long quirks = (unsigned long)usb_get_serial_data(serial);
301 struct device *dev = &serial->interface->dev;
302 int ret;
303
304 if (quirks & PL2303_QUIRK_ENDPOINT_HACK) {
305 ret = pl2303_endpoint_hack(serial, epds);
306 if (ret)
307 return ret;
308 }
Johan Hovold9fda6202017-03-16 17:13:34 +0100309
310 if (epds->num_interrupt_in < 1) {
Johan Hovold9d717272017-03-16 17:13:35 +0100311 dev_err(dev, "required interrupt-in endpoint missing\n");
Johan Hovold9fda6202017-03-16 17:13:34 +0100312 return -ENODEV;
313 }
314
315 return 1;
316}
317
Thiago Galesi372db8a2006-07-31 15:39:27 -0300318static int pl2303_startup(struct usb_serial *serial)
Linus Torvalds1da177e2005-04-16 15:20:36 -0700319{
Johan Hovold8bf769e2012-10-15 15:47:21 +0200320 struct pl2303_serial_private *spriv;
Johan Hovold7f966ac2013-12-29 19:23:07 +0100321 enum pl2303_type type = TYPE_01;
Sarah Sharp3e152502007-12-14 14:08:35 -0800322 unsigned char *buf;
Johan Hovold8bf769e2012-10-15 15:47:21 +0200323
324 spriv = kzalloc(sizeof(*spriv), GFP_KERNEL);
325 if (!spriv)
326 return -ENOMEM;
Linus Torvalds1da177e2005-04-16 15:20:36 -0700327
Johan Hovold362eb022013-12-29 19:23:01 +0100328 buf = kmalloc(1, GFP_KERNEL);
Johan Hovold8bf769e2012-10-15 15:47:21 +0200329 if (!buf) {
330 kfree(spriv);
Sarah Sharp3e152502007-12-14 14:08:35 -0800331 return -ENOMEM;
Johan Hovold8bf769e2012-10-15 15:47:21 +0200332 }
Sarah Sharp3e152502007-12-14 14:08:35 -0800333
Greg Kroah-Hartmanb52e1112013-11-01 09:17:50 -0700334 if (serial->dev->descriptor.bDeviceClass == 0x02)
Johan Hovold7f966ac2013-12-29 19:23:07 +0100335 type = TYPE_01; /* type 0 */
Greg Kroah-Hartmanb52e1112013-11-01 09:17:50 -0700336 else if (serial->dev->descriptor.bMaxPacketSize0 == 0x40)
Johan Hovold7f966ac2013-12-29 19:23:07 +0100337 type = TYPE_HX;
Greg Kroah-Hartman281393a2013-11-01 09:18:10 -0700338 else if (serial->dev->descriptor.bDeviceClass == 0x00)
Johan Hovold7f966ac2013-12-29 19:23:07 +0100339 type = TYPE_01; /* type 1 */
Greg Kroah-Hartman281393a2013-11-01 09:18:10 -0700340 else if (serial->dev->descriptor.bDeviceClass == 0xFF)
Johan Hovold7f966ac2013-12-29 19:23:07 +0100341 type = TYPE_01; /* type 1 */
Greg Kroah-Hartmanb52e1112013-11-01 09:17:50 -0700342 dev_dbg(&serial->interface->dev, "device type: %d\n", type);
Linus Torvalds1da177e2005-04-16 15:20:36 -0700343
Johan Hovold359defd2013-12-29 19:23:09 +0100344 spriv->type = &pl2303_type_data[type];
Johan Hovold228e4102013-12-29 19:23:05 +0100345 spriv->quirks = (unsigned long)usb_get_serial_data(serial);
Johan Hovold359defd2013-12-29 19:23:09 +0100346 spriv->quirks |= spriv->type->quirks;
Johan Hovold228e4102013-12-29 19:23:05 +0100347
Johan Hovold8bf769e2012-10-15 15:47:21 +0200348 usb_set_serial_data(serial, spriv);
Sarah Sharp3e152502007-12-14 14:08:35 -0800349
Johan Hovold362eb022013-12-29 19:23:01 +0100350 pl2303_vendor_read(serial, 0x8484, buf);
351 pl2303_vendor_write(serial, 0x0404, 0);
352 pl2303_vendor_read(serial, 0x8484, buf);
353 pl2303_vendor_read(serial, 0x8383, buf);
354 pl2303_vendor_read(serial, 0x8484, buf);
355 pl2303_vendor_write(serial, 0x0404, 1);
356 pl2303_vendor_read(serial, 0x8484, buf);
357 pl2303_vendor_read(serial, 0x8383, buf);
358 pl2303_vendor_write(serial, 0, 1);
359 pl2303_vendor_write(serial, 1, 0);
Johan Hovold23c6acb2013-12-29 19:23:08 +0100360 if (spriv->quirks & PL2303_QUIRK_LEGACY)
Johan Hovold362eb022013-12-29 19:23:01 +0100361 pl2303_vendor_write(serial, 2, 0x24);
Johan Hovold7f966ac2013-12-29 19:23:07 +0100362 else
363 pl2303_vendor_write(serial, 2, 0x44);
Sarah Sharp3e152502007-12-14 14:08:35 -0800364
365 kfree(buf);
Johan Hovoldccfe8182013-12-29 19:23:00 +0100366
Linus Torvalds1da177e2005-04-16 15:20:36 -0700367 return 0;
Johan Hovold8bf769e2012-10-15 15:47:21 +0200368}
Linus Torvalds1da177e2005-04-16 15:20:36 -0700369
Johan Hovold8bf769e2012-10-15 15:47:21 +0200370static void pl2303_release(struct usb_serial *serial)
371{
Johan Hovoldccfe8182013-12-29 19:23:00 +0100372 struct pl2303_serial_private *spriv = usb_get_serial_data(serial);
Johan Hovold8bf769e2012-10-15 15:47:21 +0200373
Johan Hovold8bf769e2012-10-15 15:47:21 +0200374 kfree(spriv);
375}
376
377static int pl2303_port_probe(struct usb_serial_port *port)
378{
379 struct pl2303_private *priv;
380
381 priv = kzalloc(sizeof(*priv), GFP_KERNEL);
382 if (!priv)
383 return -ENOMEM;
384
385 spin_lock_init(&priv->lock);
Johan Hovold8bf769e2012-10-15 15:47:21 +0200386
387 usb_set_serial_port_data(port, priv);
388
Johan Hovoldd7be6222013-06-26 16:47:23 +0200389 port->port.drain_delay = 256;
390
Johan Hovold8bf769e2012-10-15 15:47:21 +0200391 return 0;
392}
393
394static int pl2303_port_remove(struct usb_serial_port *port)
395{
Johan Hovoldccfe8182013-12-29 19:23:00 +0100396 struct pl2303_private *priv = usb_get_serial_port_data(port);
Johan Hovold8bf769e2012-10-15 15:47:21 +0200397
Johan Hovold8bf769e2012-10-15 15:47:21 +0200398 kfree(priv);
399
400 return 0;
Linus Torvalds1da177e2005-04-16 15:20:36 -0700401}
402
Johan Hovoldf45d0a52013-03-21 12:36:22 +0100403static int pl2303_set_control_lines(struct usb_serial_port *port, u8 value)
Linus Torvalds1da177e2005-04-16 15:20:36 -0700404{
Johan Hovoldf45d0a52013-03-21 12:36:22 +0100405 struct usb_device *dev = port->serial->dev;
Linus Torvalds1da177e2005-04-16 15:20:36 -0700406 int retval;
Alan Cox3a0f43e2008-07-22 11:14:49 +0100407
Johan Hovolda6ec8242013-12-29 19:23:02 +0100408 dev_dbg(&port->dev, "%s - %02x\n", __func__, value);
409
Thiago Galesi372db8a2006-07-31 15:39:27 -0300410 retval = usb_control_msg(dev, usb_sndctrlpipe(dev, 0),
411 SET_CONTROL_REQUEST, SET_CONTROL_REQUEST_TYPE,
412 value, 0, NULL, 0, 100);
Johan Hovolda6ec8242013-12-29 19:23:02 +0100413 if (retval)
414 dev_err(&port->dev, "%s - failed: %d\n", __func__, retval);
Johan Hovoldccfe8182013-12-29 19:23:00 +0100415
Linus Torvalds1da177e2005-04-16 15:20:36 -0700416 return retval;
417}
418
Johan Hovold59afe102013-12-29 19:23:11 +0100419/*
Johan Hovold5d850452013-12-29 19:23:15 +0100420 * Returns the nearest supported baud rate that can be set directly without
421 * using divisors.
Johan Hovold59afe102013-12-29 19:23:11 +0100422 */
423static speed_t pl2303_get_supported_baud_rate(speed_t baud)
Linus Torvalds1da177e2005-04-16 15:20:36 -0700424{
Johan Hovold59afe102013-12-29 19:23:11 +0100425 static const speed_t baud_sup[] = {
426 75, 150, 300, 600, 1200, 1800, 2400, 3600, 4800, 7200, 9600,
427 14400, 19200, 28800, 38400, 57600, 115200, 230400, 460800,
Johan Hovold5d850452013-12-29 19:23:15 +0100428 614400, 921600, 1228800, 2457600, 3000000, 6000000
Johan Hovold59afe102013-12-29 19:23:11 +0100429 };
Greg Kroah-Hartman7e12a6fc2013-11-01 09:19:34 -0700430
Johan Hovold59afe102013-12-29 19:23:11 +0100431 unsigned i;
Linus Torvalds1da177e2005-04-16 15:20:36 -0700432
Greg Kroah-Hartman7e12a6fc2013-11-01 09:19:34 -0700433 for (i = 0; i < ARRAY_SIZE(baud_sup); ++i) {
434 if (baud_sup[i] > baud)
435 break;
436 }
437
438 if (i == ARRAY_SIZE(baud_sup))
439 baud = baud_sup[i - 1];
440 else if (i > 0 && (baud_sup[i] - baud) > (baud - baud_sup[i - 1]))
441 baud = baud_sup[i - 1];
442 else
443 baud = baud_sup[i];
444
Johan Hovold59afe102013-12-29 19:23:11 +0100445 return baud;
446}
447
Johan Hovold20b4c782013-12-29 19:23:14 +0100448/*
449 * NOTE: If unsupported baud rates are set directly, the PL2303 seems to
450 * use 9600 baud.
451 */
452static speed_t pl2303_encode_baud_rate_direct(unsigned char buf[4],
453 speed_t baud)
454{
455 put_unaligned_le32(baud, buf);
456
457 return baud;
458}
459
Johan Hovoldc82c6d42013-12-29 19:23:13 +0100460static speed_t pl2303_encode_baud_rate_divisor(unsigned char buf[4],
461 speed_t baud)
462{
Michał Pecio49bda212015-07-26 11:14:34 +0200463 unsigned int baseline, mantissa, exponent;
Johan Hovoldc82c6d42013-12-29 19:23:13 +0100464
465 /*
466 * Apparently the formula is:
Michał Pecio49bda212015-07-26 11:14:34 +0200467 * baudrate = 12M * 32 / (mantissa * 4^exponent)
468 * where
469 * mantissa = buf[8:0]
470 * exponent = buf[11:9]
Johan Hovoldc82c6d42013-12-29 19:23:13 +0100471 */
Michał Pecio49bda212015-07-26 11:14:34 +0200472 baseline = 12000000 * 32;
473 mantissa = baseline / baud;
474 if (mantissa == 0)
475 mantissa = 1; /* Avoid dividing by zero if baud > 32*12M. */
476 exponent = 0;
477 while (mantissa >= 512) {
478 if (exponent < 7) {
479 mantissa >>= 2; /* divide by 4 */
480 exponent++;
481 } else {
482 /* Exponent is maxed. Trim mantissa and leave. */
483 mantissa = 511;
484 break;
485 }
486 }
487
Johan Hovoldc82c6d42013-12-29 19:23:13 +0100488 buf[3] = 0x80;
489 buf[2] = 0;
Michał Pecio49bda212015-07-26 11:14:34 +0200490 buf[1] = exponent << 1 | mantissa >> 8;
491 buf[0] = mantissa & 0xff;
492
493 /* Calculate and return the exact baud rate. */
494 baud = (baseline / mantissa) >> (exponent << 1);
Johan Hovoldc82c6d42013-12-29 19:23:13 +0100495
496 return baud;
497}
498
Johan Hovold59afe102013-12-29 19:23:11 +0100499static void pl2303_encode_baud_rate(struct tty_struct *tty,
500 struct usb_serial_port *port,
501 u8 buf[4])
502{
503 struct usb_serial *serial = port->serial;
504 struct pl2303_serial_private *spriv = usb_get_serial_data(serial);
Johan Hovold5d850452013-12-29 19:23:15 +0100505 speed_t baud_sup;
Johan Hovold59afe102013-12-29 19:23:11 +0100506 speed_t baud;
507
508 baud = tty_get_baud_rate(tty);
509 dev_dbg(&port->dev, "baud requested = %u\n", baud);
510 if (!baud)
511 return;
Johan Hovold871996e2013-12-29 19:23:12 +0100512
513 if (spriv->type->max_baud_rate)
514 baud = min_t(speed_t, baud, spriv->type->max_baud_rate);
Johan Hovold5d850452013-12-29 19:23:15 +0100515 /*
Lauri Hintsala399aa9a2014-08-13 15:02:53 +0300516 * Use direct method for supported baud rates, otherwise use divisors.
Johan Hovold5d850452013-12-29 19:23:15 +0100517 */
518 baud_sup = pl2303_get_supported_baud_rate(baud);
Johan Hovold20b4c782013-12-29 19:23:14 +0100519
Lauri Hintsala399aa9a2014-08-13 15:02:53 +0300520 if (baud == baud_sup)
521 baud = pl2303_encode_baud_rate_direct(buf, baud);
Johan Hovold5d850452013-12-29 19:23:15 +0100522 else
Lauri Hintsala399aa9a2014-08-13 15:02:53 +0300523 baud = pl2303_encode_baud_rate_divisor(buf, baud);
Greg Kroah-Hartman692ed4d2013-11-01 09:19:03 -0700524
Johan Hovold15e7cea2013-06-26 16:47:27 +0200525 /* Save resulting baud rate */
Johan Hovoldb2d6d982013-06-26 16:47:28 +0200526 tty_encode_baud_rate(tty, baud, baud);
Johan Hovoldf84ee3b2013-12-29 19:23:06 +0100527 dev_dbg(&port->dev, "baud set = %u\n", baud);
Johan Hovold15e7cea2013-06-26 16:47:27 +0200528}
529
Johan Hovold383d19c2013-12-29 19:23:03 +0100530static int pl2303_get_line_request(struct usb_serial_port *port,
531 unsigned char buf[7])
532{
533 struct usb_device *udev = port->serial->dev;
534 int ret;
535
536 ret = usb_control_msg(udev, usb_rcvctrlpipe(udev, 0),
537 GET_LINE_REQUEST, GET_LINE_REQUEST_TYPE,
538 0, 0, buf, 7, 100);
539 if (ret != 7) {
540 dev_err(&port->dev, "%s - failed: %d\n", __func__, ret);
541
Johan Hovoldb5fda432017-01-12 14:56:19 +0100542 if (ret >= 0)
Johan Hovold383d19c2013-12-29 19:23:03 +0100543 ret = -EIO;
544
545 return ret;
546 }
547
548 dev_dbg(&port->dev, "%s - %7ph\n", __func__, buf);
549
550 return 0;
551}
552
553static int pl2303_set_line_request(struct usb_serial_port *port,
554 unsigned char buf[7])
555{
556 struct usb_device *udev = port->serial->dev;
557 int ret;
558
559 ret = usb_control_msg(udev, usb_sndctrlpipe(udev, 0),
560 SET_LINE_REQUEST, SET_LINE_REQUEST_TYPE,
561 0, 0, buf, 7, 100);
Johan Hovoldb5fda432017-01-12 14:56:19 +0100562 if (ret < 0) {
Johan Hovold383d19c2013-12-29 19:23:03 +0100563 dev_err(&port->dev, "%s - failed: %d\n", __func__, ret);
Johan Hovold383d19c2013-12-29 19:23:03 +0100564 return ret;
565 }
566
567 dev_dbg(&port->dev, "%s - %7ph\n", __func__, buf);
568
569 return 0;
570}
571
Florian Zumbiehl7041d9c2018-05-20 02:23:12 +0200572static bool pl2303_termios_change(const struct ktermios *a, const struct ktermios *b)
573{
574 bool ixon_change;
575
576 ixon_change = ((a->c_iflag ^ b->c_iflag) & (IXON | IXANY)) ||
577 a->c_cc[VSTART] != b->c_cc[VSTART] ||
578 a->c_cc[VSTOP] != b->c_cc[VSTOP];
579
580 return tty_termios_hw_change(a, b) || ixon_change;
581}
582
Johan Hovold68270da2019-04-02 10:19:30 +0200583static bool pl2303_enable_xonxoff(struct tty_struct *tty, const struct pl2303_type_data *type)
584{
585 if (!I_IXON(tty) || I_IXANY(tty))
586 return false;
587
588 if (START_CHAR(tty) != 0x11 || STOP_CHAR(tty) != 0x13)
589 return false;
590
591 if (type->no_autoxonxoff)
592 return false;
593
594 return true;
595}
596
Johan Hovold15e7cea2013-06-26 16:47:27 +0200597static void pl2303_set_termios(struct tty_struct *tty,
598 struct usb_serial_port *port, struct ktermios *old_termios)
599{
600 struct usb_serial *serial = port->serial;
601 struct pl2303_serial_private *spriv = usb_get_serial_data(serial);
602 struct pl2303_private *priv = usb_get_serial_port_data(port);
603 unsigned long flags;
Johan Hovold15e7cea2013-06-26 16:47:27 +0200604 unsigned char *buf;
Johan Hovold383d19c2013-12-29 19:23:03 +0100605 int ret;
Johan Hovold15e7cea2013-06-26 16:47:27 +0200606 u8 control;
607
Florian Zumbiehl7041d9c2018-05-20 02:23:12 +0200608 if (old_termios && !pl2303_termios_change(&tty->termios, old_termios))
Johan Hovold15e7cea2013-06-26 16:47:27 +0200609 return;
610
Johan Hovold15e7cea2013-06-26 16:47:27 +0200611 buf = kzalloc(7, GFP_KERNEL);
612 if (!buf) {
Johan Hovold15e7cea2013-06-26 16:47:27 +0200613 /* Report back no change occurred */
614 if (old_termios)
615 tty->termios = *old_termios;
616 return;
617 }
618
Johan Hovold383d19c2013-12-29 19:23:03 +0100619 pl2303_get_line_request(port, buf);
Johan Hovold15e7cea2013-06-26 16:47:27 +0200620
Colin Leitnera3132492013-11-04 19:40:43 +0100621 switch (C_CSIZE(tty)) {
622 case CS5:
623 buf[6] = 5;
624 break;
625 case CS6:
626 buf[6] = 6;
627 break;
628 case CS7:
629 buf[6] = 7;
630 break;
631 default:
632 case CS8:
633 buf[6] = 8;
Johan Hovold15e7cea2013-06-26 16:47:27 +0200634 }
Colin Leitnera3132492013-11-04 19:40:43 +0100635 dev_dbg(&port->dev, "data bits = %d\n", buf[6]);
Johan Hovold15e7cea2013-06-26 16:47:27 +0200636
Greg Kroah-Hartman692ed4d2013-11-01 09:19:03 -0700637 /* For reference buf[0]:buf[3] baud rate value */
Johan Hovold79816822013-12-29 19:23:10 +0100638 pl2303_encode_baud_rate(tty, port, &buf[0]);
Johan Hovold15e7cea2013-06-26 16:47:27 +0200639
Linus Torvalds1da177e2005-04-16 15:20:36 -0700640 /* For reference buf[4]=0 is 1 stop bits */
641 /* For reference buf[4]=1 is 1.5 stop bits */
642 /* For reference buf[4]=2 is 2 stop bits */
Johan Hovold87265b42013-06-26 16:47:29 +0200643 if (C_CSTOPB(tty)) {
644 /*
645 * NOTE: Comply with "real" UARTs / RS232:
Frank Schaefer29cf1b72009-08-18 20:34:24 +0200646 * use 1.5 instead of 2 stop bits with 5 data bits
647 */
Johan Hovold87265b42013-06-26 16:47:29 +0200648 if (C_CSIZE(tty) == CS5) {
Frank Schaefer29cf1b72009-08-18 20:34:24 +0200649 buf[4] = 1;
Greg Kroah-Hartmand8789b22012-05-03 16:39:27 -0700650 dev_dbg(&port->dev, "stop bits = 1.5\n");
Frank Schaefer29cf1b72009-08-18 20:34:24 +0200651 } else {
652 buf[4] = 2;
Greg Kroah-Hartmand8789b22012-05-03 16:39:27 -0700653 dev_dbg(&port->dev, "stop bits = 2\n");
Frank Schaefer29cf1b72009-08-18 20:34:24 +0200654 }
Linus Torvalds1da177e2005-04-16 15:20:36 -0700655 } else {
656 buf[4] = 0;
Greg Kroah-Hartmand8789b22012-05-03 16:39:27 -0700657 dev_dbg(&port->dev, "stop bits = 1\n");
Linus Torvalds1da177e2005-04-16 15:20:36 -0700658 }
659
Johan Hovold87265b42013-06-26 16:47:29 +0200660 if (C_PARENB(tty)) {
Linus Torvalds1da177e2005-04-16 15:20:36 -0700661 /* For reference buf[5]=0 is none parity */
662 /* For reference buf[5]=1 is odd parity */
663 /* For reference buf[5]=2 is even parity */
664 /* For reference buf[5]=3 is mark parity */
665 /* For reference buf[5]=4 is space parity */
Johan Hovold87265b42013-06-26 16:47:29 +0200666 if (C_PARODD(tty)) {
Johan Hovold619c4352013-12-29 19:23:18 +0100667 if (C_CMSPAR(tty)) {
Frank Schaefer6dd81b42009-08-18 20:31:11 +0200668 buf[5] = 3;
Greg Kroah-Hartmand8789b22012-05-03 16:39:27 -0700669 dev_dbg(&port->dev, "parity = mark\n");
Frank Schaefer6dd81b42009-08-18 20:31:11 +0200670 } else {
671 buf[5] = 1;
Greg Kroah-Hartmand8789b22012-05-03 16:39:27 -0700672 dev_dbg(&port->dev, "parity = odd\n");
Frank Schaefer6dd81b42009-08-18 20:31:11 +0200673 }
Linus Torvalds1da177e2005-04-16 15:20:36 -0700674 } else {
Johan Hovold619c4352013-12-29 19:23:18 +0100675 if (C_CMSPAR(tty)) {
Frank Schaefer6dd81b42009-08-18 20:31:11 +0200676 buf[5] = 4;
Greg Kroah-Hartmand8789b22012-05-03 16:39:27 -0700677 dev_dbg(&port->dev, "parity = space\n");
Frank Schaefer6dd81b42009-08-18 20:31:11 +0200678 } else {
679 buf[5] = 2;
Greg Kroah-Hartmand8789b22012-05-03 16:39:27 -0700680 dev_dbg(&port->dev, "parity = even\n");
Frank Schaefer6dd81b42009-08-18 20:31:11 +0200681 }
Linus Torvalds1da177e2005-04-16 15:20:36 -0700682 }
683 } else {
684 buf[5] = 0;
Greg Kroah-Hartmand8789b22012-05-03 16:39:27 -0700685 dev_dbg(&port->dev, "parity = none\n");
Linus Torvalds1da177e2005-04-16 15:20:36 -0700686 }
687
Johan Hovold623c8262013-12-29 19:22:53 +0100688 /*
689 * Some PL2303 are known to lose bytes if you change serial settings
690 * even to the same values as before. Thus we actually need to filter
691 * in this specific case.
692 *
693 * Note that the tty_termios_hw_change check above is not sufficient
694 * as a previously requested baud rate may differ from the one
695 * actually used (and stored in old_termios).
696 *
697 * NOTE: No additional locking needed for line_settings as it is
698 * only used in set_termios, which is serialised against itself.
699 */
700 if (!old_termios || memcmp(buf, priv->line_settings, 7)) {
Johan Hovold383d19c2013-12-29 19:23:03 +0100701 ret = pl2303_set_line_request(port, buf);
702 if (!ret)
Johan Hovold623c8262013-12-29 19:22:53 +0100703 memcpy(priv->line_settings, buf, 7);
704 }
Linus Torvalds1da177e2005-04-16 15:20:36 -0700705
706 /* change control lines if we are switching to or from B0 */
707 spin_lock_irqsave(&priv->lock, flags);
708 control = priv->line_control;
Johan Hovold87265b42013-06-26 16:47:29 +0200709 if (C_BAUD(tty) == B0)
Linus Torvalds1da177e2005-04-16 15:20:36 -0700710 priv->line_control &= ~(CONTROL_DTR | CONTROL_RTS);
Johan Hovold2d8f4442013-06-10 18:29:38 +0200711 else if (old_termios && (old_termios->c_cflag & CBAUD) == B0)
Linus Torvalds1da177e2005-04-16 15:20:36 -0700712 priv->line_control |= (CONTROL_DTR | CONTROL_RTS);
713 if (control != priv->line_control) {
714 control = priv->line_control;
715 spin_unlock_irqrestore(&priv->lock, flags);
Johan Hovoldf45d0a52013-03-21 12:36:22 +0100716 pl2303_set_control_lines(port, control);
Linus Torvalds1da177e2005-04-16 15:20:36 -0700717 } else {
718 spin_unlock_irqrestore(&priv->lock, flags);
719 }
Thiago Galesi372db8a2006-07-31 15:39:27 -0300720
Johan Hovold87265b42013-06-26 16:47:29 +0200721 if (C_CRTSCTS(tty)) {
Johan Hovold23c6acb2013-12-29 19:23:08 +0100722 if (spriv->quirks & PL2303_QUIRK_LEGACY)
Johan Hovoldf64c3ab2019-04-02 10:19:31 +0200723 pl2303_update_reg(serial, 0, PL2303_FLOWCTRL_MASK, 0x40);
Johan Hovold7f966ac2013-12-29 19:23:07 +0100724 else
Johan Hovoldf64c3ab2019-04-02 10:19:31 +0200725 pl2303_update_reg(serial, 0, PL2303_FLOWCTRL_MASK, 0x60);
Johan Hovold68270da2019-04-02 10:19:30 +0200726 } else if (pl2303_enable_xonxoff(tty, spriv->type)) {
Johan Hovoldf64c3ab2019-04-02 10:19:31 +0200727 pl2303_update_reg(serial, 0, PL2303_FLOWCTRL_MASK, 0xc0);
t.sefzick715f9522007-04-25 15:05:22 +0200728 } else {
Johan Hovoldf64c3ab2019-04-02 10:19:31 +0200729 pl2303_update_reg(serial, 0, PL2303_FLOWCTRL_MASK, 0);
Linus Torvalds1da177e2005-04-16 15:20:36 -0700730 }
731
Thiago Galesi372db8a2006-07-31 15:39:27 -0300732 kfree(buf);
Linus Torvalds1da177e2005-04-16 15:20:36 -0700733}
734
Alan Cox335f8512009-06-11 12:26:29 +0100735static void pl2303_dtr_rts(struct usb_serial_port *port, int on)
Thiago Galesi572d3132006-07-29 10:46:37 -0300736{
737 struct pl2303_private *priv = usb_get_serial_port_data(port);
738 unsigned long flags;
Alan Cox335f8512009-06-11 12:26:29 +0100739 u8 control;
740
741 spin_lock_irqsave(&priv->lock, flags);
Alan Cox335f8512009-06-11 12:26:29 +0100742 if (on)
743 priv->line_control |= (CONTROL_DTR | CONTROL_RTS);
744 else
745 priv->line_control &= ~(CONTROL_DTR | CONTROL_RTS);
746 control = priv->line_control;
747 spin_unlock_irqrestore(&priv->lock, flags);
Johan Hovoldccfe8182013-12-29 19:23:00 +0100748
Johan Hovoldf45d0a52013-03-21 12:36:22 +0100749 pl2303_set_control_lines(port, control);
Alan Cox335f8512009-06-11 12:26:29 +0100750}
751
752static void pl2303_close(struct usb_serial_port *port)
753{
Johan Hovold8b0127b2010-03-17 23:06:04 +0100754 usb_serial_generic_close(port);
Thiago Galesi572d3132006-07-29 10:46:37 -0300755 usb_kill_urb(port->interrupt_in_urb);
Johan Hovold52772a72015-02-26 16:50:24 +0100756 pl2303_set_break(port, false);
Thiago Galesi572d3132006-07-29 10:46:37 -0300757}
758
Alan Coxa509a7e2009-09-19 13:13:26 -0700759static int pl2303_open(struct tty_struct *tty, struct usb_serial_port *port)
Linus Torvalds1da177e2005-04-16 15:20:36 -0700760{
Linus Torvalds1da177e2005-04-16 15:20:36 -0700761 struct usb_serial *serial = port->serial;
Johan Hovold8bf769e2012-10-15 15:47:21 +0200762 struct pl2303_serial_private *spriv = usb_get_serial_data(serial);
Linus Torvalds1da177e2005-04-16 15:20:36 -0700763 int result;
764
Johan Hovold23c6acb2013-12-29 19:23:08 +0100765 if (spriv->quirks & PL2303_QUIRK_LEGACY) {
Dariusz M16948992005-07-28 18:06:13 +0200766 usb_clear_halt(serial->dev, port->write_urb->pipe);
767 usb_clear_halt(serial->dev, port->read_urb->pipe);
Sarah Sharp3e152502007-12-14 14:08:35 -0800768 } else {
Linus Torvalds1da177e2005-04-16 15:20:36 -0700769 /* reset upstream data pipes */
Johan Hovold362eb022013-12-29 19:23:01 +0100770 pl2303_vendor_write(serial, 8, 0);
771 pl2303_vendor_write(serial, 9, 0);
Linus Torvalds1da177e2005-04-16 15:20:36 -0700772 }
773
Linus Torvalds1da177e2005-04-16 15:20:36 -0700774 /* Setup termios */
Alan Cox95da3102008-07-22 11:09:07 +0100775 if (tty)
Johan Hovold2d8f4442013-06-10 18:29:38 +0200776 pl2303_set_termios(tty, port, NULL);
Linus Torvalds1da177e2005-04-16 15:20:36 -0700777
Thiago Galesi372db8a2006-07-31 15:39:27 -0300778 result = usb_submit_urb(port->interrupt_in_urb, GFP_KERNEL);
Linus Torvalds1da177e2005-04-16 15:20:36 -0700779 if (result) {
Johan Hovoldccfe8182013-12-29 19:23:00 +0100780 dev_err(&port->dev, "failed to submit interrupt urb: %d\n",
781 result);
Johan Hovolddb6e9182011-11-06 19:06:34 +0100782 return result;
Linus Torvalds1da177e2005-04-16 15:20:36 -0700783 }
Johan Hovoldd4691c32011-11-06 19:06:35 +0100784
Johan Hovoldf5230a52011-11-06 19:06:36 +0100785 result = usb_serial_generic_open(tty, port);
Johan Hovoldd4691c32011-11-06 19:06:35 +0100786 if (result) {
787 usb_kill_urb(port->interrupt_in_urb);
788 return result;
789 }
790
Linus Torvalds1da177e2005-04-16 15:20:36 -0700791 return 0;
792}
793
Alan Cox20b9d172011-02-14 16:26:50 +0000794static int pl2303_tiocmset(struct tty_struct *tty,
Thiago Galesi372db8a2006-07-31 15:39:27 -0300795 unsigned int set, unsigned int clear)
Linus Torvalds1da177e2005-04-16 15:20:36 -0700796{
Alan Cox95da3102008-07-22 11:09:07 +0100797 struct usb_serial_port *port = tty->driver_data;
Linus Torvalds1da177e2005-04-16 15:20:36 -0700798 struct pl2303_private *priv = usb_get_serial_port_data(port);
799 unsigned long flags;
800 u8 control;
Johan Hovold6f1efd62012-04-25 15:56:31 +0200801 int ret;
Flavio Leitner6fdd8e82005-04-18 17:39:31 -0700802
Thiago Galesi372db8a2006-07-31 15:39:27 -0300803 spin_lock_irqsave(&priv->lock, flags);
Linus Torvalds1da177e2005-04-16 15:20:36 -0700804 if (set & TIOCM_RTS)
805 priv->line_control |= CONTROL_RTS;
806 if (set & TIOCM_DTR)
807 priv->line_control |= CONTROL_DTR;
808 if (clear & TIOCM_RTS)
809 priv->line_control &= ~CONTROL_RTS;
810 if (clear & TIOCM_DTR)
811 priv->line_control &= ~CONTROL_DTR;
812 control = priv->line_control;
Thiago Galesi372db8a2006-07-31 15:39:27 -0300813 spin_unlock_irqrestore(&priv->lock, flags);
Linus Torvalds1da177e2005-04-16 15:20:36 -0700814
Johan Hovold5ddbb262013-03-21 12:37:45 +0100815 ret = pl2303_set_control_lines(port, control);
816 if (ret)
817 return usb_translate_errors(ret);
Johan Hovold6f1efd62012-04-25 15:56:31 +0200818
Johan Hovold5ddbb262013-03-21 12:37:45 +0100819 return 0;
Linus Torvalds1da177e2005-04-16 15:20:36 -0700820}
821
Alan Cox60b33c12011-02-14 16:26:14 +0000822static int pl2303_tiocmget(struct tty_struct *tty)
Linus Torvalds1da177e2005-04-16 15:20:36 -0700823{
Alan Cox95da3102008-07-22 11:09:07 +0100824 struct usb_serial_port *port = tty->driver_data;
Linus Torvalds1da177e2005-04-16 15:20:36 -0700825 struct pl2303_private *priv = usb_get_serial_port_data(port);
826 unsigned long flags;
827 unsigned int mcr;
828 unsigned int status;
829 unsigned int result;
830
Thiago Galesi372db8a2006-07-31 15:39:27 -0300831 spin_lock_irqsave(&priv->lock, flags);
Linus Torvalds1da177e2005-04-16 15:20:36 -0700832 mcr = priv->line_control;
833 status = priv->line_status;
Thiago Galesi372db8a2006-07-31 15:39:27 -0300834 spin_unlock_irqrestore(&priv->lock, flags);
Linus Torvalds1da177e2005-04-16 15:20:36 -0700835
836 result = ((mcr & CONTROL_DTR) ? TIOCM_DTR : 0)
837 | ((mcr & CONTROL_RTS) ? TIOCM_RTS : 0)
838 | ((status & UART_CTS) ? TIOCM_CTS : 0)
839 | ((status & UART_DSR) ? TIOCM_DSR : 0)
840 | ((status & UART_RING) ? TIOCM_RI : 0)
841 | ((status & UART_DCD) ? TIOCM_CD : 0);
842
Greg Kroah-Hartmand8789b22012-05-03 16:39:27 -0700843 dev_dbg(&port->dev, "%s - result = %x\n", __func__, result);
Linus Torvalds1da177e2005-04-16 15:20:36 -0700844
845 return result;
846}
847
Alan Cox335f8512009-06-11 12:26:29 +0100848static int pl2303_carrier_raised(struct usb_serial_port *port)
849{
850 struct pl2303_private *priv = usb_get_serial_port_data(port);
Johan Hovoldccfe8182013-12-29 19:23:00 +0100851
Alan Cox335f8512009-06-11 12:26:29 +0100852 if (priv->line_status & UART_DCD)
853 return 1;
Johan Hovoldccfe8182013-12-29 19:23:00 +0100854
Alan Cox335f8512009-06-11 12:26:29 +0100855 return 0;
856}
857
Al Viro9326ec52018-09-12 07:23:18 -0400858static int pl2303_get_serial(struct tty_struct *tty,
859 struct serial_struct *ss)
Linus Torvalds1da177e2005-04-16 15:20:36 -0700860{
Alan Cox95da3102008-07-22 11:09:07 +0100861 struct usb_serial_port *port = tty->driver_data;
Greg Kroah-Hartmand8789b22012-05-03 16:39:27 -0700862
Al Viro9326ec52018-09-12 07:23:18 -0400863 ss->type = PORT_16654;
864 ss->line = port->minor;
865 ss->port = port->port_number;
866 ss->baud_base = 460800;
867 return 0;
Linus Torvalds1da177e2005-04-16 15:20:36 -0700868}
869
Johan Hovold52772a72015-02-26 16:50:24 +0100870static void pl2303_set_break(struct usb_serial_port *port, bool enable)
Linus Torvalds1da177e2005-04-16 15:20:36 -0700871{
872 struct usb_serial *serial = port->serial;
873 u16 state;
874 int result;
875
Johan Hovold52772a72015-02-26 16:50:24 +0100876 if (enable)
Linus Torvalds1da177e2005-04-16 15:20:36 -0700877 state = BREAK_ON;
Johan Hovold52772a72015-02-26 16:50:24 +0100878 else
879 state = BREAK_OFF;
Johan Hovoldccfe8182013-12-29 19:23:00 +0100880
Greg Kroah-Hartmand8789b22012-05-03 16:39:27 -0700881 dev_dbg(&port->dev, "%s - turning break %s\n", __func__,
Alan Cox3a0f43e2008-07-22 11:14:49 +0100882 state == BREAK_OFF ? "off" : "on");
Linus Torvalds1da177e2005-04-16 15:20:36 -0700883
Thiago Galesi372db8a2006-07-31 15:39:27 -0300884 result = usb_control_msg(serial->dev, usb_sndctrlpipe(serial->dev, 0),
885 BREAK_REQUEST, BREAK_REQUEST_TYPE, state,
886 0, NULL, 0, 100);
Linus Torvalds1da177e2005-04-16 15:20:36 -0700887 if (result)
Greg Kroah-Hartmand8789b22012-05-03 16:39:27 -0700888 dev_err(&port->dev, "error sending break = %d\n", result);
Linus Torvalds1da177e2005-04-16 15:20:36 -0700889}
890
Johan Hovold52772a72015-02-26 16:50:24 +0100891static void pl2303_break_ctl(struct tty_struct *tty, int state)
892{
893 struct usb_serial_port *port = tty->driver_data;
894
895 pl2303_set_break(port, state);
896}
897
Flavio Leitner97bb13e2005-04-18 17:39:31 -0700898static void pl2303_update_line_status(struct usb_serial_port *port,
899 unsigned char *data,
900 unsigned int actual_length)
901{
Johan Hovold228e4102013-12-29 19:23:05 +0100902 struct usb_serial *serial = port->serial;
903 struct pl2303_serial_private *spriv = usb_get_serial_data(serial);
Flavio Leitner97bb13e2005-04-18 17:39:31 -0700904 struct pl2303_private *priv = usb_get_serial_port_data(port);
Libor Pechacekd14fc1a2011-01-14 14:30:21 +0100905 struct tty_struct *tty;
Flavio Leitner97bb13e2005-04-18 17:39:31 -0700906 unsigned long flags;
Johan Hovold228e4102013-12-29 19:23:05 +0100907 unsigned int status_idx = UART_STATE_INDEX;
Johan Hovold6020c3b2014-01-02 22:49:21 +0100908 u8 status;
909 u8 delta;
Flavio Leitner97bb13e2005-04-18 17:39:31 -0700910
Johan Hovold228e4102013-12-29 19:23:05 +0100911 if (spriv->quirks & PL2303_QUIRK_UART_STATE_IDX0)
912 status_idx = 0;
Thiago Galesi9c537612006-07-29 10:47:12 -0300913
Johan Hovold228e4102013-12-29 19:23:05 +0100914 if (actual_length < status_idx + 1)
Luiz Fernando N. Capitulinoa009b752006-07-25 16:58:30 -0300915 return;
Flavio Leitner97bb13e2005-04-18 17:39:31 -0700916
Johan Hovold6020c3b2014-01-02 22:49:21 +0100917 status = data[status_idx];
918
Alan Cox3a0f43e2008-07-22 11:14:49 +0100919 /* Save off the uart status for others to look at */
Flavio Leitner97bb13e2005-04-18 17:39:31 -0700920 spin_lock_irqsave(&priv->lock, flags);
Johan Hovold6020c3b2014-01-02 22:49:21 +0100921 delta = priv->line_status ^ status;
922 priv->line_status = status;
Flavio Leitner97bb13e2005-04-18 17:39:31 -0700923 spin_unlock_irqrestore(&priv->lock, flags);
Johan Hovoldccfe8182013-12-29 19:23:00 +0100924
Johan Hovold6020c3b2014-01-02 22:49:21 +0100925 if (status & UART_BREAK_ERROR)
Jason Wessel430eb0d2009-05-29 13:34:16 -0500926 usb_serial_handle_break(port);
Johan Hovoldccfe8182013-12-29 19:23:00 +0100927
Johan Hovolddbfd2862014-01-02 22:49:22 +0100928 if (delta & UART_STATE_MSR_MASK) {
Johan Hovolda4bcb292014-01-02 22:49:23 +0100929 if (delta & UART_CTS)
930 port->icount.cts++;
931 if (delta & UART_DSR)
932 port->icount.dsr++;
933 if (delta & UART_RING)
934 port->icount.rng++;
Johan Hovolddbfd2862014-01-02 22:49:22 +0100935 if (delta & UART_DCD) {
Johan Hovolda4bcb292014-01-02 22:49:23 +0100936 port->icount.dcd++;
Johan Hovolddbfd2862014-01-02 22:49:22 +0100937 tty = tty_port_tty_get(&port->port);
938 if (tty) {
939 usb_serial_handle_dcd_change(port, tty,
Johan Hovold6020c3b2014-01-02 22:49:21 +0100940 status & UART_DCD);
Johan Hovolddbfd2862014-01-02 22:49:22 +0100941 tty_kref_put(tty);
942 }
Johan Hovold6020c3b2014-01-02 22:49:21 +0100943 }
Johan Hovolddbfd2862014-01-02 22:49:22 +0100944
945 wake_up_interruptible(&port->port.delta_msr_wait);
Johan Hovold6020c3b2014-01-02 22:49:21 +0100946 }
Flavio Leitner97bb13e2005-04-18 17:39:31 -0700947}
Linus Torvalds1da177e2005-04-16 15:20:36 -0700948
David Howells7d12e782006-10-05 14:55:46 +0100949static void pl2303_read_int_callback(struct urb *urb)
Linus Torvalds1da177e2005-04-16 15:20:36 -0700950{
Ming Leicdc97792008-02-24 18:41:47 +0800951 struct usb_serial_port *port = urb->context;
Linus Torvalds1da177e2005-04-16 15:20:36 -0700952 unsigned char *data = urb->transfer_buffer;
Flavio Leitner97bb13e2005-04-18 17:39:31 -0700953 unsigned int actual_length = urb->actual_length;
Greg Kroah-Hartman461d6962007-06-15 15:44:13 -0700954 int status = urb->status;
955 int retval;
Linus Torvalds1da177e2005-04-16 15:20:36 -0700956
Greg Kroah-Hartman461d6962007-06-15 15:44:13 -0700957 switch (status) {
Linus Torvalds1da177e2005-04-16 15:20:36 -0700958 case 0:
959 /* success */
960 break;
961 case -ECONNRESET:
962 case -ENOENT:
963 case -ESHUTDOWN:
964 /* this urb is terminated, clean up */
Greg Kroah-Hartmand8789b22012-05-03 16:39:27 -0700965 dev_dbg(&port->dev, "%s - urb shutting down with status: %d\n",
966 __func__, status);
Linus Torvalds1da177e2005-04-16 15:20:36 -0700967 return;
968 default:
Greg Kroah-Hartmand8789b22012-05-03 16:39:27 -0700969 dev_dbg(&port->dev, "%s - nonzero urb status received: %d\n",
970 __func__, status);
Linus Torvalds1da177e2005-04-16 15:20:36 -0700971 goto exit;
972 }
973
Greg Kroah-Hartman59d33f22012-09-18 09:58:57 +0100974 usb_serial_debug_data(&port->dev, __func__,
Thiago Galesi372db8a2006-07-31 15:39:27 -0300975 urb->actual_length, urb->transfer_buffer);
976
Flavio Leitner97bb13e2005-04-18 17:39:31 -0700977 pl2303_update_line_status(port, data, actual_length);
Linus Torvalds1da177e2005-04-16 15:20:36 -0700978
Linus Torvalds1da177e2005-04-16 15:20:36 -0700979exit:
Greg Kroah-Hartman461d6962007-06-15 15:44:13 -0700980 retval = usb_submit_urb(urb, GFP_ATOMIC);
Johan Hovoldccfe8182013-12-29 19:23:00 +0100981 if (retval) {
Greg Kroah-Hartmand8789b22012-05-03 16:39:27 -0700982 dev_err(&port->dev,
Thiago Galesi372db8a2006-07-31 15:39:27 -0300983 "%s - usb_submit_urb failed with result %d\n",
Harvey Harrison441b62c2008-03-03 16:08:34 -0800984 __func__, retval);
Johan Hovoldccfe8182013-12-29 19:23:00 +0100985 }
Linus Torvalds1da177e2005-04-16 15:20:36 -0700986}
987
Johan Hovoldf08e07a2010-03-17 23:05:58 +0100988static void pl2303_process_read_urb(struct urb *urb)
Alan Coxd4fc4a72009-07-09 13:36:58 +0100989{
Johan Hovoldf08e07a2010-03-17 23:05:58 +0100990 struct usb_serial_port *port = urb->context;
991 struct pl2303_private *priv = usb_get_serial_port_data(port);
Alan Coxd4fc4a72009-07-09 13:36:58 +0100992 unsigned char *data = urb->transfer_buffer;
Alan Coxd4fc4a72009-07-09 13:36:58 +0100993 char tty_flag = TTY_NORMAL;
Johan Hovoldf08e07a2010-03-17 23:05:58 +0100994 unsigned long flags;
995 u8 line_status;
996 int i;
997
998 /* update line status */
999 spin_lock_irqsave(&priv->lock, flags);
1000 line_status = priv->line_status;
1001 priv->line_status &= ~UART_STATE_TRANSIENT_MASK;
1002 spin_unlock_irqrestore(&priv->lock, flags);
Johan Hovoldf08e07a2010-03-17 23:05:58 +01001003
1004 if (!urb->actual_length)
1005 return;
1006
Johan Hovoldccfe8182013-12-29 19:23:00 +01001007 /*
1008 * Break takes precedence over parity, which takes precedence over
1009 * framing errors.
1010 */
Alan Coxd4fc4a72009-07-09 13:36:58 +01001011 if (line_status & UART_BREAK_ERROR)
1012 tty_flag = TTY_BREAK;
1013 else if (line_status & UART_PARITY_ERROR)
1014 tty_flag = TTY_PARITY;
1015 else if (line_status & UART_FRAME_ERROR)
1016 tty_flag = TTY_FRAME;
Alan Coxd4fc4a72009-07-09 13:36:58 +01001017
Johan Hovold3ba19fe2013-06-26 16:47:30 +02001018 if (tty_flag != TTY_NORMAL)
1019 dev_dbg(&port->dev, "%s - tty_flag = %d\n", __func__,
1020 tty_flag);
Alan Coxd4fc4a72009-07-09 13:36:58 +01001021 /* overrun is special, not associated with a char */
1022 if (line_status & UART_OVERRUN_ERROR)
Jiri Slaby92a19f92013-01-03 15:53:03 +01001023 tty_insert_flip_char(&port->port, 0, TTY_OVERRUN);
Johan Hovold9388e2e2009-10-08 11:36:46 +02001024
Johan Hovoldd45cc8d2010-05-08 15:18:41 +02001025 if (port->port.console && port->sysrq) {
Alan Coxd4fc4a72009-07-09 13:36:58 +01001026 for (i = 0; i < urb->actual_length; ++i)
Dmitry Torokhov6ee9f4b2010-08-17 21:15:47 -07001027 if (!usb_serial_handle_sysrq_char(port, data[i]))
Jiri Slaby92a19f92013-01-03 15:53:03 +01001028 tty_insert_flip_char(&port->port, data[i],
1029 tty_flag);
Johan Hovoldd45cc8d2010-05-08 15:18:41 +02001030 } else {
Jiri Slaby2f693352013-01-03 15:53:02 +01001031 tty_insert_flip_string_fixed_flag(&port->port, data, tty_flag,
Johan Hovoldd45cc8d2010-05-08 15:18:41 +02001032 urb->actual_length);
Johan Hovold9388e2e2009-10-08 11:36:46 +02001033 }
Johan Hovoldf08e07a2010-03-17 23:05:58 +01001034
Jiri Slaby2e124b42013-01-03 15:53:06 +01001035 tty_flip_buffer_push(&port->port);
Linus Torvalds1da177e2005-04-16 15:20:36 -07001036}
1037
Thiago Galesi572d3132006-07-29 10:46:37 -03001038static struct usb_serial_driver pl2303_device = {
1039 .driver = {
1040 .owner = THIS_MODULE,
1041 .name = "pl2303",
1042 },
1043 .id_table = id_table,
Johan Hovold590298b2017-03-02 12:51:31 +01001044 .num_bulk_in = 1,
1045 .num_bulk_out = 1,
Johan Hovold9fda6202017-03-16 17:13:34 +01001046 .num_interrupt_in = 0, /* see pl2303_calc_num_ports */
Johan Hovold7919c2f2010-03-17 23:00:41 +01001047 .bulk_in_size = 256,
Johan Hovold3efeaff2010-03-17 23:00:40 +01001048 .bulk_out_size = 256,
Thiago Galesi572d3132006-07-29 10:46:37 -03001049 .open = pl2303_open,
1050 .close = pl2303_close,
Johan Hovoldccfe8182013-12-29 19:23:00 +01001051 .dtr_rts = pl2303_dtr_rts,
Alan Cox335f8512009-06-11 12:26:29 +01001052 .carrier_raised = pl2303_carrier_raised,
Al Viro9326ec52018-09-12 07:23:18 -04001053 .get_serial = pl2303_get_serial,
Thiago Galesi572d3132006-07-29 10:46:37 -03001054 .break_ctl = pl2303_break_ctl,
1055 .set_termios = pl2303_set_termios,
1056 .tiocmget = pl2303_tiocmget,
1057 .tiocmset = pl2303_tiocmset,
Johan Hovolda4bcb292014-01-02 22:49:23 +01001058 .tiocmiwait = usb_serial_generic_tiocmiwait,
Johan Hovoldf08e07a2010-03-17 23:05:58 +01001059 .process_read_urb = pl2303_process_read_urb,
Thiago Galesi572d3132006-07-29 10:46:37 -03001060 .read_int_callback = pl2303_read_int_callback,
Johan Hovold228e4102013-12-29 19:23:05 +01001061 .probe = pl2303_probe,
Johan Hovold9fda6202017-03-16 17:13:34 +01001062 .calc_num_ports = pl2303_calc_num_ports,
Thiago Galesi572d3132006-07-29 10:46:37 -03001063 .attach = pl2303_startup,
Alan Sternf9c99bb2009-06-02 11:53:55 -04001064 .release = pl2303_release,
Johan Hovold8bf769e2012-10-15 15:47:21 +02001065 .port_probe = pl2303_port_probe,
1066 .port_remove = pl2303_port_remove,
Thiago Galesi572d3132006-07-29 10:46:37 -03001067};
Linus Torvalds1da177e2005-04-16 15:20:36 -07001068
Alan Sternf667dda2012-02-23 14:57:18 -05001069static struct usb_serial_driver * const serial_drivers[] = {
1070 &pl2303_device, NULL
1071};
1072
Greg Kroah-Hartman68e24112012-05-08 15:46:14 -07001073module_usb_serial_driver(serial_drivers, id_table);
Linus Torvalds1da177e2005-04-16 15:20:36 -07001074
Johan Hovoldccfe8182013-12-29 19:23:00 +01001075MODULE_DESCRIPTION("Prolific PL2303 USB to serial adaptor driver");
Johan Hovold627cfa82017-11-03 18:12:08 +01001076MODULE_LICENSE("GPL v2");