Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1 | /* |
| 2 | * Prolific PL2303 USB to serial adaptor driver |
| 3 | * |
Greg Kroah-Hartman | 4d0dce3 | 2007-06-12 11:43:37 -0700 | [diff] [blame] | 4 | * Copyright (C) 2001-2007 Greg Kroah-Hartman (greg@kroah.com) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 5 | * Copyright (C) 2003 IBM Corp. |
| 6 | * |
| 7 | * Original driver for 2.2.x by anonymous |
| 8 | * |
Greg Kroah-Hartman | 4d0dce3 | 2007-06-12 11:43:37 -0700 | [diff] [blame] | 9 | * This program is free software; you can redistribute it and/or |
| 10 | * modify it under the terms of the GNU General Public License version |
| 11 | * 2 as published by the Free Software Foundation. |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 12 | * |
Alan Cox | 3a0f43e | 2008-07-22 11:14:49 +0100 | [diff] [blame] | 13 | * See Documentation/usb/usb-serial.txt for more information on using this |
| 14 | * driver |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 15 | */ |
| 16 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 17 | #include <linux/kernel.h> |
| 18 | #include <linux/errno.h> |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 19 | #include <linux/slab.h> |
| 20 | #include <linux/tty.h> |
| 21 | #include <linux/tty_driver.h> |
| 22 | #include <linux/tty_flip.h> |
| 23 | #include <linux/serial.h> |
| 24 | #include <linux/module.h> |
| 25 | #include <linux/moduleparam.h> |
| 26 | #include <linux/spinlock.h> |
Alan Cox | 3a0f43e | 2008-07-22 11:14:49 +0100 | [diff] [blame] | 27 | #include <linux/uaccess.h> |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 28 | #include <linux/usb.h> |
Greg Kroah-Hartman | a969888 | 2006-07-11 21:22:58 -0700 | [diff] [blame] | 29 | #include <linux/usb/serial.h> |
Johan Hovold | b2d6d98 | 2013-06-26 16:47:28 +0200 | [diff] [blame] | 30 | #include <asm/unaligned.h> |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 31 | #include "pl2303.h" |
| 32 | |
Johan Hovold | 228e410 | 2013-12-29 19:23:05 +0100 | [diff] [blame] | 33 | |
| 34 | #define PL2303_QUIRK_UART_STATE_IDX0 BIT(0) |
Johan Hovold | 23c6acb | 2013-12-29 19:23:08 +0100 | [diff] [blame] | 35 | #define PL2303_QUIRK_LEGACY BIT(1) |
Johan Hovold | 228e410 | 2013-12-29 19:23:05 +0100 | [diff] [blame] | 36 | |
Németh Márton | 7d40d7e | 2010-01-10 15:34:24 +0100 | [diff] [blame] | 37 | static const struct usb_device_id id_table[] = { |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 38 | { USB_DEVICE(PL2303_VENDOR_ID, PL2303_PRODUCT_ID) }, |
| 39 | { USB_DEVICE(PL2303_VENDOR_ID, PL2303_PRODUCT_ID_RSAQ2) }, |
Peter Moulder | 3d86149 | 2006-06-19 22:47:49 +1000 | [diff] [blame] | 40 | { USB_DEVICE(PL2303_VENDOR_ID, PL2303_PRODUCT_ID_DCU11) }, |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 41 | { USB_DEVICE(PL2303_VENDOR_ID, PL2303_PRODUCT_ID_RSAQ3) }, |
| 42 | { USB_DEVICE(PL2303_VENDOR_ID, PL2303_PRODUCT_ID_PHAROS) }, |
Max Arnold | b483b6a | 2008-03-20 16:43:56 +0700 | [diff] [blame] | 43 | { USB_DEVICE(PL2303_VENDOR_ID, PL2303_PRODUCT_ID_ALDIGA) }, |
Steve Murphy | 4be2fa1 | 2008-05-23 23:39:05 +0530 | [diff] [blame] | 44 | { USB_DEVICE(PL2303_VENDOR_ID, PL2303_PRODUCT_ID_MMX) }, |
Greg Kroah-Hartman | 727df35 | 2008-07-02 15:25:41 -0500 | [diff] [blame] | 45 | { USB_DEVICE(PL2303_VENDOR_ID, PL2303_PRODUCT_ID_GPRS) }, |
Simone Contini | 18344a1 | 2010-04-12 23:25:10 +0200 | [diff] [blame] | 46 | { USB_DEVICE(PL2303_VENDOR_ID, PL2303_PRODUCT_ID_HCR331) }, |
Dario Lombardo | 96a3e79 | 2011-01-21 15:35:19 +0100 | [diff] [blame] | 47 | { USB_DEVICE(PL2303_VENDOR_ID, PL2303_PRODUCT_ID_MOTOROLA) }, |
Greg KH | 91fcb1c | 2014-08-15 15:22:21 +0800 | [diff] [blame] | 48 | { USB_DEVICE(PL2303_VENDOR_ID, PL2303_PRODUCT_ID_ZTEK) }, |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 49 | { USB_DEVICE(IODATA_VENDOR_ID, IODATA_PRODUCT_ID) }, |
Masakazu Mokuno | 8a28dea | 2007-10-23 13:51:57 +0900 | [diff] [blame] | 50 | { USB_DEVICE(IODATA_VENDOR_ID, IODATA_PRODUCT_ID_RSAQ5) }, |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 51 | { USB_DEVICE(ATEN_VENDOR_ID, ATEN_PRODUCT_ID) }, |
Greg Kroah-Hartman | 4fd8c36 | 2017-08-10 11:54:12 -0700 | [diff] [blame] | 52 | { USB_DEVICE(ATEN_VENDOR_ID, ATEN_PRODUCT_UC485) }, |
Marcel J.E. Mol | 4807725 | 2017-01-30 19:26:40 +0100 | [diff] [blame] | 53 | { USB_DEVICE(ATEN_VENDOR_ID, ATEN_PRODUCT_ID2) }, |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 54 | { USB_DEVICE(ATEN_VENDOR_ID2, ATEN_PRODUCT_ID) }, |
| 55 | { USB_DEVICE(ELCOM_VENDOR_ID, ELCOM_PRODUCT_ID) }, |
| 56 | { USB_DEVICE(ELCOM_VENDOR_ID, ELCOM_PRODUCT_ID_UCSGT) }, |
| 57 | { USB_DEVICE(ITEGNO_VENDOR_ID, ITEGNO_PRODUCT_ID) }, |
Wang Jun | 5838171 | 2006-04-19 16:32:07 +0800 | [diff] [blame] | 58 | { USB_DEVICE(ITEGNO_VENDOR_ID, ITEGNO_PRODUCT_ID_2080) }, |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 59 | { USB_DEVICE(MA620_VENDOR_ID, MA620_PRODUCT_ID) }, |
| 60 | { USB_DEVICE(RATOC_VENDOR_ID, RATOC_PRODUCT_ID) }, |
| 61 | { USB_DEVICE(TRIPP_VENDOR_ID, TRIPP_PRODUCT_ID) }, |
| 62 | { USB_DEVICE(RADIOSHACK_VENDOR_ID, RADIOSHACK_PRODUCT_ID) }, |
| 63 | { USB_DEVICE(DCU10_VENDOR_ID, DCU10_PRODUCT_ID) }, |
| 64 | { USB_DEVICE(SITECOM_VENDOR_ID, SITECOM_PRODUCT_ID) }, |
| 65 | { USB_DEVICE(ALCATEL_VENDOR_ID, ALCATEL_PRODUCT_ID) }, |
Johan Hovold | 228e410 | 2013-12-29 19:23:05 +0100 | [diff] [blame] | 66 | { USB_DEVICE(SIEMENS_VENDOR_ID, SIEMENS_PRODUCT_ID_SX1), |
| 67 | .driver_info = PL2303_QUIRK_UART_STATE_IDX0 }, |
| 68 | { USB_DEVICE(SIEMENS_VENDOR_ID, SIEMENS_PRODUCT_ID_X65), |
| 69 | .driver_info = PL2303_QUIRK_UART_STATE_IDX0 }, |
| 70 | { USB_DEVICE(SIEMENS_VENDOR_ID, SIEMENS_PRODUCT_ID_X75), |
| 71 | .driver_info = PL2303_QUIRK_UART_STATE_IDX0 }, |
Andreas Loibl | e7beb66 | 2007-08-24 01:51:11 +0200 | [diff] [blame] | 72 | { USB_DEVICE(SIEMENS_VENDOR_ID, SIEMENS_PRODUCT_ID_EF81) }, |
Alan Cox | 912299f | 2009-04-06 17:35:12 +0100 | [diff] [blame] | 73 | { USB_DEVICE(BENQ_VENDOR_ID, BENQ_PRODUCT_ID_S81) }, /* Benq/Siemens S81 */ |
Peter Favrholdt | acbb36f | 2005-04-18 17:39:32 -0700 | [diff] [blame] | 74 | { USB_DEVICE(SYNTECH_VENDOR_ID, SYNTECH_PRODUCT_ID) }, |
Christian Lindner | c6c2772 | 2006-02-01 14:10:52 +0100 | [diff] [blame] | 75 | { USB_DEVICE(NOKIA_CA42_VENDOR_ID, NOKIA_CA42_PRODUCT_ID) }, |
| 76 | { USB_DEVICE(CA_42_CA42_VENDOR_ID, CA_42_CA42_PRODUCT_ID) }, |
Denis MONTERRAT | 6cceb05 | 2006-01-19 14:52:38 +0100 | [diff] [blame] | 77 | { USB_DEVICE(SAGEM_VENDOR_ID, SAGEM_PRODUCT_ID) }, |
Christian Lindner | c6c2772 | 2006-02-01 14:10:52 +0100 | [diff] [blame] | 78 | { USB_DEVICE(LEADTEK_VENDOR_ID, LEADTEK_9531_PRODUCT_ID) }, |
Dick Streefland | 491b04c | 2006-03-01 00:53:33 -0800 | [diff] [blame] | 79 | { USB_DEVICE(SPEEDDRAGON_VENDOR_ID, SPEEDDRAGON_PRODUCT_ID) }, |
Matthew Meno | 3b92847 | 2006-06-21 15:25:53 -0400 | [diff] [blame] | 80 | { USB_DEVICE(DATAPILOT_U2_VENDOR_ID, DATAPILOT_U2_PRODUCT_ID) }, |
Kim Oldfield | b7aa94b | 2006-07-25 15:54:59 +1000 | [diff] [blame] | 81 | { USB_DEVICE(BELKIN_VENDOR_ID, BELKIN_PRODUCT_ID) }, |
Johannes Steingraeber | 8fd8013 | 2006-09-16 16:17:34 +0200 | [diff] [blame] | 82 | { USB_DEVICE(ALCOR_VENDOR_ID, ALCOR_PRODUCT_ID) }, |
YOSHIFUJI Hideaki | 2d94b98 | 2007-01-26 22:51:38 +0900 | [diff] [blame] | 83 | { USB_DEVICE(WS002IN_VENDOR_ID, WS002IN_PRODUCT_ID) }, |
Magnus Damm | 9e3285d | 2007-11-08 16:45:46 +0900 | [diff] [blame] | 84 | { USB_DEVICE(COREGA_VENDOR_ID, COREGA_PRODUCT_ID) }, |
Damien Stuart | cc311ee | 2008-01-06 13:51:39 -0500 | [diff] [blame] | 85 | { USB_DEVICE(YCCABLE_VENDOR_ID, YCCABLE_PRODUCT_ID) }, |
Matthew Arnold | 7c99200 | 2008-12-13 22:42:53 +1100 | [diff] [blame] | 86 | { USB_DEVICE(SUPERIAL_VENDOR_ID, SUPERIAL_PRODUCT_ID) }, |
Mike Provencher | af4b851 | 2008-12-16 14:30:14 -0600 | [diff] [blame] | 87 | { USB_DEVICE(HP_VENDOR_ID, HP_LD220_PRODUCT_ID) }, |
Aaron Sanders | b16c02f | 2014-03-31 15:54:21 +0200 | [diff] [blame] | 88 | { USB_DEVICE(HP_VENDOR_ID, HP_LD960_PRODUCT_ID) }, |
| 89 | { USB_DEVICE(HP_VENDOR_ID, HP_LCM220_PRODUCT_ID) }, |
| 90 | { USB_DEVICE(HP_VENDOR_ID, HP_LCM960_PRODUCT_ID) }, |
Gianpaolo Cugola | 8540d66 | 2009-06-05 22:57:52 +0200 | [diff] [blame] | 91 | { USB_DEVICE(CRESSI_VENDOR_ID, CRESSI_EDY_PRODUCT_ID) }, |
Jef Driesen | f36ecd5 | 2010-08-09 15:55:32 +0200 | [diff] [blame] | 92 | { USB_DEVICE(ZEAGLE_VENDOR_ID, ZEAGLE_N2ITION3_PRODUCT_ID) }, |
Khanh-Dang Nguyen Thu Lam | 4927656 | 2009-07-28 19:41:17 +0200 | [diff] [blame] | 93 | { USB_DEVICE(SONY_VENDOR_ID, SONY_QN3USB_PRODUCT_ID) }, |
Pawel Ludwikow | 35904e6 | 2009-08-27 14:15:50 +0200 | [diff] [blame] | 94 | { USB_DEVICE(SANWA_VENDOR_ID, SANWA_PRODUCT_ID) }, |
Manuel Jander | 9a61d72 | 2010-03-29 23:51:57 +0200 | [diff] [blame] | 95 | { USB_DEVICE(ADLINK_VENDOR_ID, ADLINK_ND6530_PRODUCT_ID) }, |
Eric Benoit | 598f0b7 | 2011-09-24 02:04:50 -0400 | [diff] [blame] | 96 | { USB_DEVICE(SMART_VENDOR_ID, SMART_PRODUCT_ID) }, |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 97 | { } /* Terminating entry */ |
| 98 | }; |
| 99 | |
Thiago Galesi | 372db8a | 2006-07-31 15:39:27 -0300 | [diff] [blame] | 100 | MODULE_DEVICE_TABLE(usb, id_table); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 101 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 102 | #define SET_LINE_REQUEST_TYPE 0x21 |
| 103 | #define SET_LINE_REQUEST 0x20 |
| 104 | |
| 105 | #define SET_CONTROL_REQUEST_TYPE 0x21 |
| 106 | #define SET_CONTROL_REQUEST 0x22 |
| 107 | #define CONTROL_DTR 0x01 |
| 108 | #define CONTROL_RTS 0x02 |
| 109 | |
| 110 | #define BREAK_REQUEST_TYPE 0x21 |
Alan Cox | 3a0f43e | 2008-07-22 11:14:49 +0100 | [diff] [blame] | 111 | #define BREAK_REQUEST 0x23 |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 112 | #define BREAK_ON 0xffff |
| 113 | #define BREAK_OFF 0x0000 |
| 114 | |
| 115 | #define GET_LINE_REQUEST_TYPE 0xa1 |
| 116 | #define GET_LINE_REQUEST 0x21 |
| 117 | |
| 118 | #define VENDOR_WRITE_REQUEST_TYPE 0x40 |
| 119 | #define VENDOR_WRITE_REQUEST 0x01 |
| 120 | |
| 121 | #define VENDOR_READ_REQUEST_TYPE 0xc0 |
| 122 | #define VENDOR_READ_REQUEST 0x01 |
| 123 | |
Johan Hovold | 228e410 | 2013-12-29 19:23:05 +0100 | [diff] [blame] | 124 | #define UART_STATE_INDEX 8 |
Johan Hovold | dbfd286 | 2014-01-02 22:49:22 +0100 | [diff] [blame] | 125 | #define UART_STATE_MSR_MASK 0x8b |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 126 | #define UART_STATE_TRANSIENT_MASK 0x74 |
| 127 | #define UART_DCD 0x01 |
| 128 | #define UART_DSR 0x02 |
| 129 | #define UART_BREAK_ERROR 0x04 |
| 130 | #define UART_RING 0x08 |
| 131 | #define UART_FRAME_ERROR 0x10 |
| 132 | #define UART_PARITY_ERROR 0x20 |
| 133 | #define UART_OVERRUN_ERROR 0x40 |
| 134 | #define UART_CTS 0x80 |
| 135 | |
Johan Hovold | 52772a7 | 2015-02-26 16:50:24 +0100 | [diff] [blame] | 136 | static void pl2303_set_break(struct usb_serial_port *port, bool enable); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 137 | |
| 138 | enum pl2303_type { |
Johan Hovold | 7f966ac | 2013-12-29 19:23:07 +0100 | [diff] [blame] | 139 | TYPE_01, /* Type 0 and 1 (difference unknown) */ |
| 140 | TYPE_HX, /* HX version of the pl2303 chip */ |
Johan Hovold | 359defd | 2013-12-29 19:23:09 +0100 | [diff] [blame] | 141 | TYPE_COUNT |
| 142 | }; |
| 143 | |
| 144 | struct pl2303_type_data { |
| 145 | speed_t max_baud_rate; |
| 146 | unsigned long quirks; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 147 | }; |
| 148 | |
Johan Hovold | 8bf769e | 2012-10-15 15:47:21 +0200 | [diff] [blame] | 149 | struct pl2303_serial_private { |
Johan Hovold | b693468 | 2014-01-02 22:49:20 +0100 | [diff] [blame] | 150 | const struct pl2303_type_data *type; |
Johan Hovold | 228e410 | 2013-12-29 19:23:05 +0100 | [diff] [blame] | 151 | unsigned long quirks; |
Johan Hovold | 8bf769e | 2012-10-15 15:47:21 +0200 | [diff] [blame] | 152 | }; |
| 153 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 154 | struct pl2303_private { |
| 155 | spinlock_t lock; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 156 | u8 line_control; |
| 157 | u8 line_status; |
Johan Hovold | 623c826 | 2013-12-29 19:22:53 +0100 | [diff] [blame] | 158 | |
| 159 | u8 line_settings[7]; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 160 | }; |
| 161 | |
Johan Hovold | b693468 | 2014-01-02 22:49:20 +0100 | [diff] [blame] | 162 | static const struct pl2303_type_data pl2303_type_data[TYPE_COUNT] = { |
Johan Hovold | 359defd | 2013-12-29 19:23:09 +0100 | [diff] [blame] | 163 | [TYPE_01] = { |
| 164 | .max_baud_rate = 1228800, |
| 165 | .quirks = PL2303_QUIRK_LEGACY, |
| 166 | }, |
Lauri Hintsala | 399aa9a | 2014-08-13 15:02:53 +0300 | [diff] [blame] | 167 | [TYPE_HX] = { |
| 168 | .max_baud_rate = 12000000, |
| 169 | }, |
Johan Hovold | 359defd | 2013-12-29 19:23:09 +0100 | [diff] [blame] | 170 | }; |
| 171 | |
Johan Hovold | 362eb02 | 2013-12-29 19:23:01 +0100 | [diff] [blame] | 172 | static int pl2303_vendor_read(struct usb_serial *serial, u16 value, |
| 173 | unsigned char buf[1]) |
Sarah Sharp | eb44da0 | 2007-12-14 14:08:00 -0800 | [diff] [blame] | 174 | { |
Johan Hovold | 362eb02 | 2013-12-29 19:23:01 +0100 | [diff] [blame] | 175 | struct device *dev = &serial->interface->dev; |
Johan Hovold | ccfe818 | 2013-12-29 19:23:00 +0100 | [diff] [blame] | 176 | int res; |
| 177 | |
| 178 | res = usb_control_msg(serial->dev, usb_rcvctrlpipe(serial->dev, 0), |
Sarah Sharp | eb44da0 | 2007-12-14 14:08:00 -0800 | [diff] [blame] | 179 | VENDOR_READ_REQUEST, VENDOR_READ_REQUEST_TYPE, |
Johan Hovold | 362eb02 | 2013-12-29 19:23:01 +0100 | [diff] [blame] | 180 | value, 0, buf, 1, 100); |
| 181 | if (res != 1) { |
| 182 | dev_err(dev, "%s - failed to read [%04x]: %d\n", __func__, |
| 183 | value, res); |
| 184 | if (res >= 0) |
| 185 | res = -EIO; |
Johan Hovold | ccfe818 | 2013-12-29 19:23:00 +0100 | [diff] [blame] | 186 | |
Johan Hovold | 362eb02 | 2013-12-29 19:23:01 +0100 | [diff] [blame] | 187 | return res; |
| 188 | } |
Johan Hovold | ccfe818 | 2013-12-29 19:23:00 +0100 | [diff] [blame] | 189 | |
Johan Hovold | 362eb02 | 2013-12-29 19:23:01 +0100 | [diff] [blame] | 190 | dev_dbg(dev, "%s - [%04x] = %02x\n", __func__, value, buf[0]); |
| 191 | |
| 192 | return 0; |
Sarah Sharp | eb44da0 | 2007-12-14 14:08:00 -0800 | [diff] [blame] | 193 | } |
| 194 | |
Johan Hovold | 362eb02 | 2013-12-29 19:23:01 +0100 | [diff] [blame] | 195 | static int pl2303_vendor_write(struct usb_serial *serial, u16 value, u16 index) |
Sarah Sharp | eb44da0 | 2007-12-14 14:08:00 -0800 | [diff] [blame] | 196 | { |
Johan Hovold | 362eb02 | 2013-12-29 19:23:01 +0100 | [diff] [blame] | 197 | struct device *dev = &serial->interface->dev; |
Johan Hovold | ccfe818 | 2013-12-29 19:23:00 +0100 | [diff] [blame] | 198 | int res; |
| 199 | |
Johan Hovold | 362eb02 | 2013-12-29 19:23:01 +0100 | [diff] [blame] | 200 | dev_dbg(dev, "%s - [%04x] = %02x\n", __func__, value, index); |
| 201 | |
Johan Hovold | ccfe818 | 2013-12-29 19:23:00 +0100 | [diff] [blame] | 202 | res = usb_control_msg(serial->dev, usb_sndctrlpipe(serial->dev, 0), |
Sarah Sharp | eb44da0 | 2007-12-14 14:08:00 -0800 | [diff] [blame] | 203 | VENDOR_WRITE_REQUEST, VENDOR_WRITE_REQUEST_TYPE, |
| 204 | value, index, NULL, 0, 100); |
Johan Hovold | 362eb02 | 2013-12-29 19:23:01 +0100 | [diff] [blame] | 205 | if (res) { |
| 206 | dev_err(dev, "%s - failed to write [%04x]: %d\n", __func__, |
| 207 | value, res); |
| 208 | return res; |
| 209 | } |
Johan Hovold | ccfe818 | 2013-12-29 19:23:00 +0100 | [diff] [blame] | 210 | |
Johan Hovold | 362eb02 | 2013-12-29 19:23:01 +0100 | [diff] [blame] | 211 | return 0; |
Sarah Sharp | eb44da0 | 2007-12-14 14:08:00 -0800 | [diff] [blame] | 212 | } |
| 213 | |
Johan Hovold | 228e410 | 2013-12-29 19:23:05 +0100 | [diff] [blame] | 214 | static int pl2303_probe(struct usb_serial *serial, |
| 215 | const struct usb_device_id *id) |
| 216 | { |
| 217 | usb_set_serial_data(serial, (void *)id->driver_info); |
| 218 | |
| 219 | return 0; |
| 220 | } |
| 221 | |
Thiago Galesi | 372db8a | 2006-07-31 15:39:27 -0300 | [diff] [blame] | 222 | static int pl2303_startup(struct usb_serial *serial) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 223 | { |
Johan Hovold | 8bf769e | 2012-10-15 15:47:21 +0200 | [diff] [blame] | 224 | struct pl2303_serial_private *spriv; |
Johan Hovold | 69c415e | 2017-01-03 16:40:00 +0100 | [diff] [blame] | 225 | unsigned char num_ports = serial->num_ports; |
Johan Hovold | 7f966ac | 2013-12-29 19:23:07 +0100 | [diff] [blame] | 226 | enum pl2303_type type = TYPE_01; |
Sarah Sharp | 3e15250 | 2007-12-14 14:08:35 -0800 | [diff] [blame] | 227 | unsigned char *buf; |
Johan Hovold | 8bf769e | 2012-10-15 15:47:21 +0200 | [diff] [blame] | 228 | |
Johan Hovold | 69c415e | 2017-01-03 16:40:00 +0100 | [diff] [blame] | 229 | if (serial->num_bulk_in < num_ports || |
| 230 | serial->num_bulk_out < num_ports || |
| 231 | serial->num_interrupt_in < num_ports) { |
| 232 | dev_err(&serial->interface->dev, "missing endpoints\n"); |
| 233 | return -ENODEV; |
| 234 | } |
| 235 | |
Johan Hovold | 8bf769e | 2012-10-15 15:47:21 +0200 | [diff] [blame] | 236 | spriv = kzalloc(sizeof(*spriv), GFP_KERNEL); |
| 237 | if (!spriv) |
| 238 | return -ENOMEM; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 239 | |
Johan Hovold | 362eb02 | 2013-12-29 19:23:01 +0100 | [diff] [blame] | 240 | buf = kmalloc(1, GFP_KERNEL); |
Johan Hovold | 8bf769e | 2012-10-15 15:47:21 +0200 | [diff] [blame] | 241 | if (!buf) { |
| 242 | kfree(spriv); |
Sarah Sharp | 3e15250 | 2007-12-14 14:08:35 -0800 | [diff] [blame] | 243 | return -ENOMEM; |
Johan Hovold | 8bf769e | 2012-10-15 15:47:21 +0200 | [diff] [blame] | 244 | } |
Sarah Sharp | 3e15250 | 2007-12-14 14:08:35 -0800 | [diff] [blame] | 245 | |
Greg Kroah-Hartman | b52e111 | 2013-11-01 09:17:50 -0700 | [diff] [blame] | 246 | if (serial->dev->descriptor.bDeviceClass == 0x02) |
Johan Hovold | 7f966ac | 2013-12-29 19:23:07 +0100 | [diff] [blame] | 247 | type = TYPE_01; /* type 0 */ |
Greg Kroah-Hartman | b52e111 | 2013-11-01 09:17:50 -0700 | [diff] [blame] | 248 | else if (serial->dev->descriptor.bMaxPacketSize0 == 0x40) |
Johan Hovold | 7f966ac | 2013-12-29 19:23:07 +0100 | [diff] [blame] | 249 | type = TYPE_HX; |
Greg Kroah-Hartman | 281393a | 2013-11-01 09:18:10 -0700 | [diff] [blame] | 250 | else if (serial->dev->descriptor.bDeviceClass == 0x00) |
Johan Hovold | 7f966ac | 2013-12-29 19:23:07 +0100 | [diff] [blame] | 251 | type = TYPE_01; /* type 1 */ |
Greg Kroah-Hartman | 281393a | 2013-11-01 09:18:10 -0700 | [diff] [blame] | 252 | else if (serial->dev->descriptor.bDeviceClass == 0xFF) |
Johan Hovold | 7f966ac | 2013-12-29 19:23:07 +0100 | [diff] [blame] | 253 | type = TYPE_01; /* type 1 */ |
Greg Kroah-Hartman | b52e111 | 2013-11-01 09:17:50 -0700 | [diff] [blame] | 254 | dev_dbg(&serial->interface->dev, "device type: %d\n", type); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 255 | |
Johan Hovold | 359defd | 2013-12-29 19:23:09 +0100 | [diff] [blame] | 256 | spriv->type = &pl2303_type_data[type]; |
Johan Hovold | 228e410 | 2013-12-29 19:23:05 +0100 | [diff] [blame] | 257 | spriv->quirks = (unsigned long)usb_get_serial_data(serial); |
Johan Hovold | 359defd | 2013-12-29 19:23:09 +0100 | [diff] [blame] | 258 | spriv->quirks |= spriv->type->quirks; |
Johan Hovold | 228e410 | 2013-12-29 19:23:05 +0100 | [diff] [blame] | 259 | |
Johan Hovold | 8bf769e | 2012-10-15 15:47:21 +0200 | [diff] [blame] | 260 | usb_set_serial_data(serial, spriv); |
Sarah Sharp | 3e15250 | 2007-12-14 14:08:35 -0800 | [diff] [blame] | 261 | |
Johan Hovold | 362eb02 | 2013-12-29 19:23:01 +0100 | [diff] [blame] | 262 | pl2303_vendor_read(serial, 0x8484, buf); |
| 263 | pl2303_vendor_write(serial, 0x0404, 0); |
| 264 | pl2303_vendor_read(serial, 0x8484, buf); |
| 265 | pl2303_vendor_read(serial, 0x8383, buf); |
| 266 | pl2303_vendor_read(serial, 0x8484, buf); |
| 267 | pl2303_vendor_write(serial, 0x0404, 1); |
| 268 | pl2303_vendor_read(serial, 0x8484, buf); |
| 269 | pl2303_vendor_read(serial, 0x8383, buf); |
| 270 | pl2303_vendor_write(serial, 0, 1); |
| 271 | pl2303_vendor_write(serial, 1, 0); |
Johan Hovold | 23c6acb | 2013-12-29 19:23:08 +0100 | [diff] [blame] | 272 | if (spriv->quirks & PL2303_QUIRK_LEGACY) |
Johan Hovold | 362eb02 | 2013-12-29 19:23:01 +0100 | [diff] [blame] | 273 | pl2303_vendor_write(serial, 2, 0x24); |
Johan Hovold | 7f966ac | 2013-12-29 19:23:07 +0100 | [diff] [blame] | 274 | else |
| 275 | pl2303_vendor_write(serial, 2, 0x44); |
Sarah Sharp | 3e15250 | 2007-12-14 14:08:35 -0800 | [diff] [blame] | 276 | |
| 277 | kfree(buf); |
Johan Hovold | ccfe818 | 2013-12-29 19:23:00 +0100 | [diff] [blame] | 278 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 279 | return 0; |
Johan Hovold | 8bf769e | 2012-10-15 15:47:21 +0200 | [diff] [blame] | 280 | } |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 281 | |
Johan Hovold | 8bf769e | 2012-10-15 15:47:21 +0200 | [diff] [blame] | 282 | static void pl2303_release(struct usb_serial *serial) |
| 283 | { |
Johan Hovold | ccfe818 | 2013-12-29 19:23:00 +0100 | [diff] [blame] | 284 | struct pl2303_serial_private *spriv = usb_get_serial_data(serial); |
Johan Hovold | 8bf769e | 2012-10-15 15:47:21 +0200 | [diff] [blame] | 285 | |
Johan Hovold | 8bf769e | 2012-10-15 15:47:21 +0200 | [diff] [blame] | 286 | kfree(spriv); |
| 287 | } |
| 288 | |
| 289 | static int pl2303_port_probe(struct usb_serial_port *port) |
| 290 | { |
| 291 | struct pl2303_private *priv; |
| 292 | |
| 293 | priv = kzalloc(sizeof(*priv), GFP_KERNEL); |
| 294 | if (!priv) |
| 295 | return -ENOMEM; |
| 296 | |
| 297 | spin_lock_init(&priv->lock); |
Johan Hovold | 8bf769e | 2012-10-15 15:47:21 +0200 | [diff] [blame] | 298 | |
| 299 | usb_set_serial_port_data(port, priv); |
| 300 | |
Johan Hovold | d7be622 | 2013-06-26 16:47:23 +0200 | [diff] [blame] | 301 | port->port.drain_delay = 256; |
| 302 | |
Johan Hovold | 8bf769e | 2012-10-15 15:47:21 +0200 | [diff] [blame] | 303 | return 0; |
| 304 | } |
| 305 | |
| 306 | static int pl2303_port_remove(struct usb_serial_port *port) |
| 307 | { |
Johan Hovold | ccfe818 | 2013-12-29 19:23:00 +0100 | [diff] [blame] | 308 | struct pl2303_private *priv = usb_get_serial_port_data(port); |
Johan Hovold | 8bf769e | 2012-10-15 15:47:21 +0200 | [diff] [blame] | 309 | |
Johan Hovold | 8bf769e | 2012-10-15 15:47:21 +0200 | [diff] [blame] | 310 | kfree(priv); |
| 311 | |
| 312 | return 0; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 313 | } |
| 314 | |
Johan Hovold | f45d0a5 | 2013-03-21 12:36:22 +0100 | [diff] [blame] | 315 | static int pl2303_set_control_lines(struct usb_serial_port *port, u8 value) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 316 | { |
Johan Hovold | f45d0a5 | 2013-03-21 12:36:22 +0100 | [diff] [blame] | 317 | struct usb_device *dev = port->serial->dev; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 318 | int retval; |
Alan Cox | 3a0f43e | 2008-07-22 11:14:49 +0100 | [diff] [blame] | 319 | |
Johan Hovold | a6ec824 | 2013-12-29 19:23:02 +0100 | [diff] [blame] | 320 | dev_dbg(&port->dev, "%s - %02x\n", __func__, value); |
| 321 | |
Thiago Galesi | 372db8a | 2006-07-31 15:39:27 -0300 | [diff] [blame] | 322 | retval = usb_control_msg(dev, usb_sndctrlpipe(dev, 0), |
| 323 | SET_CONTROL_REQUEST, SET_CONTROL_REQUEST_TYPE, |
| 324 | value, 0, NULL, 0, 100); |
Johan Hovold | a6ec824 | 2013-12-29 19:23:02 +0100 | [diff] [blame] | 325 | if (retval) |
| 326 | dev_err(&port->dev, "%s - failed: %d\n", __func__, retval); |
Johan Hovold | ccfe818 | 2013-12-29 19:23:00 +0100 | [diff] [blame] | 327 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 328 | return retval; |
| 329 | } |
| 330 | |
Johan Hovold | 59afe10 | 2013-12-29 19:23:11 +0100 | [diff] [blame] | 331 | /* |
Johan Hovold | 5d85045 | 2013-12-29 19:23:15 +0100 | [diff] [blame] | 332 | * Returns the nearest supported baud rate that can be set directly without |
| 333 | * using divisors. |
Johan Hovold | 59afe10 | 2013-12-29 19:23:11 +0100 | [diff] [blame] | 334 | */ |
| 335 | static speed_t pl2303_get_supported_baud_rate(speed_t baud) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 336 | { |
Johan Hovold | 59afe10 | 2013-12-29 19:23:11 +0100 | [diff] [blame] | 337 | static const speed_t baud_sup[] = { |
| 338 | 75, 150, 300, 600, 1200, 1800, 2400, 3600, 4800, 7200, 9600, |
| 339 | 14400, 19200, 28800, 38400, 57600, 115200, 230400, 460800, |
Johan Hovold | 5d85045 | 2013-12-29 19:23:15 +0100 | [diff] [blame] | 340 | 614400, 921600, 1228800, 2457600, 3000000, 6000000 |
Johan Hovold | 59afe10 | 2013-12-29 19:23:11 +0100 | [diff] [blame] | 341 | }; |
Greg Kroah-Hartman | 7e12a6fc | 2013-11-01 09:19:34 -0700 | [diff] [blame] | 342 | |
Johan Hovold | 59afe10 | 2013-12-29 19:23:11 +0100 | [diff] [blame] | 343 | unsigned i; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 344 | |
Greg Kroah-Hartman | 7e12a6fc | 2013-11-01 09:19:34 -0700 | [diff] [blame] | 345 | for (i = 0; i < ARRAY_SIZE(baud_sup); ++i) { |
| 346 | if (baud_sup[i] > baud) |
| 347 | break; |
| 348 | } |
| 349 | |
| 350 | if (i == ARRAY_SIZE(baud_sup)) |
| 351 | baud = baud_sup[i - 1]; |
| 352 | else if (i > 0 && (baud_sup[i] - baud) > (baud - baud_sup[i - 1])) |
| 353 | baud = baud_sup[i - 1]; |
| 354 | else |
| 355 | baud = baud_sup[i]; |
| 356 | |
Johan Hovold | 59afe10 | 2013-12-29 19:23:11 +0100 | [diff] [blame] | 357 | return baud; |
| 358 | } |
| 359 | |
Johan Hovold | 20b4c78 | 2013-12-29 19:23:14 +0100 | [diff] [blame] | 360 | /* |
| 361 | * NOTE: If unsupported baud rates are set directly, the PL2303 seems to |
| 362 | * use 9600 baud. |
| 363 | */ |
| 364 | static speed_t pl2303_encode_baud_rate_direct(unsigned char buf[4], |
| 365 | speed_t baud) |
| 366 | { |
| 367 | put_unaligned_le32(baud, buf); |
| 368 | |
| 369 | return baud; |
| 370 | } |
| 371 | |
Johan Hovold | c82c6d4 | 2013-12-29 19:23:13 +0100 | [diff] [blame] | 372 | static speed_t pl2303_encode_baud_rate_divisor(unsigned char buf[4], |
| 373 | speed_t baud) |
| 374 | { |
Michał Pecio | 49bda21 | 2015-07-26 11:14:34 +0200 | [diff] [blame] | 375 | unsigned int baseline, mantissa, exponent; |
Johan Hovold | c82c6d4 | 2013-12-29 19:23:13 +0100 | [diff] [blame] | 376 | |
| 377 | /* |
| 378 | * Apparently the formula is: |
Michał Pecio | 49bda21 | 2015-07-26 11:14:34 +0200 | [diff] [blame] | 379 | * baudrate = 12M * 32 / (mantissa * 4^exponent) |
| 380 | * where |
| 381 | * mantissa = buf[8:0] |
| 382 | * exponent = buf[11:9] |
Johan Hovold | c82c6d4 | 2013-12-29 19:23:13 +0100 | [diff] [blame] | 383 | */ |
Michał Pecio | 49bda21 | 2015-07-26 11:14:34 +0200 | [diff] [blame] | 384 | baseline = 12000000 * 32; |
| 385 | mantissa = baseline / baud; |
| 386 | if (mantissa == 0) |
| 387 | mantissa = 1; /* Avoid dividing by zero if baud > 32*12M. */ |
| 388 | exponent = 0; |
| 389 | while (mantissa >= 512) { |
| 390 | if (exponent < 7) { |
| 391 | mantissa >>= 2; /* divide by 4 */ |
| 392 | exponent++; |
| 393 | } else { |
| 394 | /* Exponent is maxed. Trim mantissa and leave. */ |
| 395 | mantissa = 511; |
| 396 | break; |
| 397 | } |
| 398 | } |
| 399 | |
Johan Hovold | c82c6d4 | 2013-12-29 19:23:13 +0100 | [diff] [blame] | 400 | buf[3] = 0x80; |
| 401 | buf[2] = 0; |
Michał Pecio | 49bda21 | 2015-07-26 11:14:34 +0200 | [diff] [blame] | 402 | buf[1] = exponent << 1 | mantissa >> 8; |
| 403 | buf[0] = mantissa & 0xff; |
| 404 | |
| 405 | /* Calculate and return the exact baud rate. */ |
| 406 | baud = (baseline / mantissa) >> (exponent << 1); |
Johan Hovold | c82c6d4 | 2013-12-29 19:23:13 +0100 | [diff] [blame] | 407 | |
| 408 | return baud; |
| 409 | } |
| 410 | |
Johan Hovold | 59afe10 | 2013-12-29 19:23:11 +0100 | [diff] [blame] | 411 | static void pl2303_encode_baud_rate(struct tty_struct *tty, |
| 412 | struct usb_serial_port *port, |
| 413 | u8 buf[4]) |
| 414 | { |
| 415 | struct usb_serial *serial = port->serial; |
| 416 | struct pl2303_serial_private *spriv = usb_get_serial_data(serial); |
Johan Hovold | 5d85045 | 2013-12-29 19:23:15 +0100 | [diff] [blame] | 417 | speed_t baud_sup; |
Johan Hovold | 59afe10 | 2013-12-29 19:23:11 +0100 | [diff] [blame] | 418 | speed_t baud; |
| 419 | |
| 420 | baud = tty_get_baud_rate(tty); |
| 421 | dev_dbg(&port->dev, "baud requested = %u\n", baud); |
| 422 | if (!baud) |
| 423 | return; |
Johan Hovold | 871996e | 2013-12-29 19:23:12 +0100 | [diff] [blame] | 424 | |
| 425 | if (spriv->type->max_baud_rate) |
| 426 | baud = min_t(speed_t, baud, spriv->type->max_baud_rate); |
Johan Hovold | 5d85045 | 2013-12-29 19:23:15 +0100 | [diff] [blame] | 427 | /* |
Lauri Hintsala | 399aa9a | 2014-08-13 15:02:53 +0300 | [diff] [blame] | 428 | * Use direct method for supported baud rates, otherwise use divisors. |
Johan Hovold | 5d85045 | 2013-12-29 19:23:15 +0100 | [diff] [blame] | 429 | */ |
| 430 | baud_sup = pl2303_get_supported_baud_rate(baud); |
Johan Hovold | 20b4c78 | 2013-12-29 19:23:14 +0100 | [diff] [blame] | 431 | |
Lauri Hintsala | 399aa9a | 2014-08-13 15:02:53 +0300 | [diff] [blame] | 432 | if (baud == baud_sup) |
| 433 | baud = pl2303_encode_baud_rate_direct(buf, baud); |
Johan Hovold | 5d85045 | 2013-12-29 19:23:15 +0100 | [diff] [blame] | 434 | else |
Lauri Hintsala | 399aa9a | 2014-08-13 15:02:53 +0300 | [diff] [blame] | 435 | baud = pl2303_encode_baud_rate_divisor(buf, baud); |
Greg Kroah-Hartman | 692ed4d | 2013-11-01 09:19:03 -0700 | [diff] [blame] | 436 | |
Johan Hovold | 15e7cea | 2013-06-26 16:47:27 +0200 | [diff] [blame] | 437 | /* Save resulting baud rate */ |
Johan Hovold | b2d6d98 | 2013-06-26 16:47:28 +0200 | [diff] [blame] | 438 | tty_encode_baud_rate(tty, baud, baud); |
Johan Hovold | f84ee3b | 2013-12-29 19:23:06 +0100 | [diff] [blame] | 439 | dev_dbg(&port->dev, "baud set = %u\n", baud); |
Johan Hovold | 15e7cea | 2013-06-26 16:47:27 +0200 | [diff] [blame] | 440 | } |
| 441 | |
Johan Hovold | 383d19c | 2013-12-29 19:23:03 +0100 | [diff] [blame] | 442 | static int pl2303_get_line_request(struct usb_serial_port *port, |
| 443 | unsigned char buf[7]) |
| 444 | { |
| 445 | struct usb_device *udev = port->serial->dev; |
| 446 | int ret; |
| 447 | |
| 448 | ret = usb_control_msg(udev, usb_rcvctrlpipe(udev, 0), |
| 449 | GET_LINE_REQUEST, GET_LINE_REQUEST_TYPE, |
| 450 | 0, 0, buf, 7, 100); |
| 451 | if (ret != 7) { |
| 452 | dev_err(&port->dev, "%s - failed: %d\n", __func__, ret); |
| 453 | |
| 454 | if (ret > 0) |
| 455 | ret = -EIO; |
| 456 | |
| 457 | return ret; |
| 458 | } |
| 459 | |
| 460 | dev_dbg(&port->dev, "%s - %7ph\n", __func__, buf); |
| 461 | |
| 462 | return 0; |
| 463 | } |
| 464 | |
| 465 | static int pl2303_set_line_request(struct usb_serial_port *port, |
| 466 | unsigned char buf[7]) |
| 467 | { |
| 468 | struct usb_device *udev = port->serial->dev; |
| 469 | int ret; |
| 470 | |
| 471 | ret = usb_control_msg(udev, usb_sndctrlpipe(udev, 0), |
| 472 | SET_LINE_REQUEST, SET_LINE_REQUEST_TYPE, |
| 473 | 0, 0, buf, 7, 100); |
| 474 | if (ret != 7) { |
| 475 | dev_err(&port->dev, "%s - failed: %d\n", __func__, ret); |
| 476 | |
| 477 | if (ret > 0) |
| 478 | ret = -EIO; |
| 479 | |
| 480 | return ret; |
| 481 | } |
| 482 | |
| 483 | dev_dbg(&port->dev, "%s - %7ph\n", __func__, buf); |
| 484 | |
| 485 | return 0; |
| 486 | } |
| 487 | |
Johan Hovold | 15e7cea | 2013-06-26 16:47:27 +0200 | [diff] [blame] | 488 | static void pl2303_set_termios(struct tty_struct *tty, |
| 489 | struct usb_serial_port *port, struct ktermios *old_termios) |
| 490 | { |
| 491 | struct usb_serial *serial = port->serial; |
| 492 | struct pl2303_serial_private *spriv = usb_get_serial_data(serial); |
| 493 | struct pl2303_private *priv = usb_get_serial_port_data(port); |
| 494 | unsigned long flags; |
Johan Hovold | 15e7cea | 2013-06-26 16:47:27 +0200 | [diff] [blame] | 495 | unsigned char *buf; |
Johan Hovold | 383d19c | 2013-12-29 19:23:03 +0100 | [diff] [blame] | 496 | int ret; |
Johan Hovold | 15e7cea | 2013-06-26 16:47:27 +0200 | [diff] [blame] | 497 | u8 control; |
| 498 | |
Johan Hovold | 15e7cea | 2013-06-26 16:47:27 +0200 | [diff] [blame] | 499 | if (old_termios && !tty_termios_hw_change(&tty->termios, old_termios)) |
| 500 | return; |
| 501 | |
Johan Hovold | 15e7cea | 2013-06-26 16:47:27 +0200 | [diff] [blame] | 502 | buf = kzalloc(7, GFP_KERNEL); |
| 503 | if (!buf) { |
Johan Hovold | 15e7cea | 2013-06-26 16:47:27 +0200 | [diff] [blame] | 504 | /* Report back no change occurred */ |
| 505 | if (old_termios) |
| 506 | tty->termios = *old_termios; |
| 507 | return; |
| 508 | } |
| 509 | |
Johan Hovold | 383d19c | 2013-12-29 19:23:03 +0100 | [diff] [blame] | 510 | pl2303_get_line_request(port, buf); |
Johan Hovold | 15e7cea | 2013-06-26 16:47:27 +0200 | [diff] [blame] | 511 | |
Colin Leitner | a313249 | 2013-11-04 19:40:43 +0100 | [diff] [blame] | 512 | switch (C_CSIZE(tty)) { |
| 513 | case CS5: |
| 514 | buf[6] = 5; |
| 515 | break; |
| 516 | case CS6: |
| 517 | buf[6] = 6; |
| 518 | break; |
| 519 | case CS7: |
| 520 | buf[6] = 7; |
| 521 | break; |
| 522 | default: |
| 523 | case CS8: |
| 524 | buf[6] = 8; |
Johan Hovold | 15e7cea | 2013-06-26 16:47:27 +0200 | [diff] [blame] | 525 | } |
Colin Leitner | a313249 | 2013-11-04 19:40:43 +0100 | [diff] [blame] | 526 | dev_dbg(&port->dev, "data bits = %d\n", buf[6]); |
Johan Hovold | 15e7cea | 2013-06-26 16:47:27 +0200 | [diff] [blame] | 527 | |
Greg Kroah-Hartman | 692ed4d | 2013-11-01 09:19:03 -0700 | [diff] [blame] | 528 | /* For reference buf[0]:buf[3] baud rate value */ |
Johan Hovold | 7981682 | 2013-12-29 19:23:10 +0100 | [diff] [blame] | 529 | pl2303_encode_baud_rate(tty, port, &buf[0]); |
Johan Hovold | 15e7cea | 2013-06-26 16:47:27 +0200 | [diff] [blame] | 530 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 531 | /* For reference buf[4]=0 is 1 stop bits */ |
| 532 | /* For reference buf[4]=1 is 1.5 stop bits */ |
| 533 | /* For reference buf[4]=2 is 2 stop bits */ |
Johan Hovold | 87265b4 | 2013-06-26 16:47:29 +0200 | [diff] [blame] | 534 | if (C_CSTOPB(tty)) { |
| 535 | /* |
| 536 | * NOTE: Comply with "real" UARTs / RS232: |
Frank Schaefer | 29cf1b7 | 2009-08-18 20:34:24 +0200 | [diff] [blame] | 537 | * use 1.5 instead of 2 stop bits with 5 data bits |
| 538 | */ |
Johan Hovold | 87265b4 | 2013-06-26 16:47:29 +0200 | [diff] [blame] | 539 | if (C_CSIZE(tty) == CS5) { |
Frank Schaefer | 29cf1b7 | 2009-08-18 20:34:24 +0200 | [diff] [blame] | 540 | buf[4] = 1; |
Greg Kroah-Hartman | d8789b2 | 2012-05-03 16:39:27 -0700 | [diff] [blame] | 541 | dev_dbg(&port->dev, "stop bits = 1.5\n"); |
Frank Schaefer | 29cf1b7 | 2009-08-18 20:34:24 +0200 | [diff] [blame] | 542 | } else { |
| 543 | buf[4] = 2; |
Greg Kroah-Hartman | d8789b2 | 2012-05-03 16:39:27 -0700 | [diff] [blame] | 544 | dev_dbg(&port->dev, "stop bits = 2\n"); |
Frank Schaefer | 29cf1b7 | 2009-08-18 20:34:24 +0200 | [diff] [blame] | 545 | } |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 546 | } else { |
| 547 | buf[4] = 0; |
Greg Kroah-Hartman | d8789b2 | 2012-05-03 16:39:27 -0700 | [diff] [blame] | 548 | dev_dbg(&port->dev, "stop bits = 1\n"); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 549 | } |
| 550 | |
Johan Hovold | 87265b4 | 2013-06-26 16:47:29 +0200 | [diff] [blame] | 551 | if (C_PARENB(tty)) { |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 552 | /* For reference buf[5]=0 is none parity */ |
| 553 | /* For reference buf[5]=1 is odd parity */ |
| 554 | /* For reference buf[5]=2 is even parity */ |
| 555 | /* For reference buf[5]=3 is mark parity */ |
| 556 | /* For reference buf[5]=4 is space parity */ |
Johan Hovold | 87265b4 | 2013-06-26 16:47:29 +0200 | [diff] [blame] | 557 | if (C_PARODD(tty)) { |
Johan Hovold | 619c435 | 2013-12-29 19:23:18 +0100 | [diff] [blame] | 558 | if (C_CMSPAR(tty)) { |
Frank Schaefer | 6dd81b4 | 2009-08-18 20:31:11 +0200 | [diff] [blame] | 559 | buf[5] = 3; |
Greg Kroah-Hartman | d8789b2 | 2012-05-03 16:39:27 -0700 | [diff] [blame] | 560 | dev_dbg(&port->dev, "parity = mark\n"); |
Frank Schaefer | 6dd81b4 | 2009-08-18 20:31:11 +0200 | [diff] [blame] | 561 | } else { |
| 562 | buf[5] = 1; |
Greg Kroah-Hartman | d8789b2 | 2012-05-03 16:39:27 -0700 | [diff] [blame] | 563 | dev_dbg(&port->dev, "parity = odd\n"); |
Frank Schaefer | 6dd81b4 | 2009-08-18 20:31:11 +0200 | [diff] [blame] | 564 | } |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 565 | } else { |
Johan Hovold | 619c435 | 2013-12-29 19:23:18 +0100 | [diff] [blame] | 566 | if (C_CMSPAR(tty)) { |
Frank Schaefer | 6dd81b4 | 2009-08-18 20:31:11 +0200 | [diff] [blame] | 567 | buf[5] = 4; |
Greg Kroah-Hartman | d8789b2 | 2012-05-03 16:39:27 -0700 | [diff] [blame] | 568 | dev_dbg(&port->dev, "parity = space\n"); |
Frank Schaefer | 6dd81b4 | 2009-08-18 20:31:11 +0200 | [diff] [blame] | 569 | } else { |
| 570 | buf[5] = 2; |
Greg Kroah-Hartman | d8789b2 | 2012-05-03 16:39:27 -0700 | [diff] [blame] | 571 | dev_dbg(&port->dev, "parity = even\n"); |
Frank Schaefer | 6dd81b4 | 2009-08-18 20:31:11 +0200 | [diff] [blame] | 572 | } |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 573 | } |
| 574 | } else { |
| 575 | buf[5] = 0; |
Greg Kroah-Hartman | d8789b2 | 2012-05-03 16:39:27 -0700 | [diff] [blame] | 576 | dev_dbg(&port->dev, "parity = none\n"); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 577 | } |
| 578 | |
Johan Hovold | 623c826 | 2013-12-29 19:22:53 +0100 | [diff] [blame] | 579 | /* |
| 580 | * Some PL2303 are known to lose bytes if you change serial settings |
| 581 | * even to the same values as before. Thus we actually need to filter |
| 582 | * in this specific case. |
| 583 | * |
| 584 | * Note that the tty_termios_hw_change check above is not sufficient |
| 585 | * as a previously requested baud rate may differ from the one |
| 586 | * actually used (and stored in old_termios). |
| 587 | * |
| 588 | * NOTE: No additional locking needed for line_settings as it is |
| 589 | * only used in set_termios, which is serialised against itself. |
| 590 | */ |
| 591 | if (!old_termios || memcmp(buf, priv->line_settings, 7)) { |
Johan Hovold | 383d19c | 2013-12-29 19:23:03 +0100 | [diff] [blame] | 592 | ret = pl2303_set_line_request(port, buf); |
| 593 | if (!ret) |
Johan Hovold | 623c826 | 2013-12-29 19:22:53 +0100 | [diff] [blame] | 594 | memcpy(priv->line_settings, buf, 7); |
| 595 | } |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 596 | |
| 597 | /* change control lines if we are switching to or from B0 */ |
| 598 | spin_lock_irqsave(&priv->lock, flags); |
| 599 | control = priv->line_control; |
Johan Hovold | 87265b4 | 2013-06-26 16:47:29 +0200 | [diff] [blame] | 600 | if (C_BAUD(tty) == B0) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 601 | priv->line_control &= ~(CONTROL_DTR | CONTROL_RTS); |
Johan Hovold | 2d8f444 | 2013-06-10 18:29:38 +0200 | [diff] [blame] | 602 | else if (old_termios && (old_termios->c_cflag & CBAUD) == B0) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 603 | priv->line_control |= (CONTROL_DTR | CONTROL_RTS); |
| 604 | if (control != priv->line_control) { |
| 605 | control = priv->line_control; |
| 606 | spin_unlock_irqrestore(&priv->lock, flags); |
Johan Hovold | f45d0a5 | 2013-03-21 12:36:22 +0100 | [diff] [blame] | 607 | pl2303_set_control_lines(port, control); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 608 | } else { |
| 609 | spin_unlock_irqrestore(&priv->lock, flags); |
| 610 | } |
Thiago Galesi | 372db8a | 2006-07-31 15:39:27 -0300 | [diff] [blame] | 611 | |
Johan Hovold | 87265b4 | 2013-06-26 16:47:29 +0200 | [diff] [blame] | 612 | if (C_CRTSCTS(tty)) { |
Johan Hovold | 23c6acb | 2013-12-29 19:23:08 +0100 | [diff] [blame] | 613 | if (spriv->quirks & PL2303_QUIRK_LEGACY) |
Johan Hovold | 362eb02 | 2013-12-29 19:23:01 +0100 | [diff] [blame] | 614 | pl2303_vendor_write(serial, 0x0, 0x41); |
Johan Hovold | 7f966ac | 2013-12-29 19:23:07 +0100 | [diff] [blame] | 615 | else |
| 616 | pl2303_vendor_write(serial, 0x0, 0x61); |
t.sefzick | 715f952 | 2007-04-25 15:05:22 +0200 | [diff] [blame] | 617 | } else { |
Johan Hovold | 362eb02 | 2013-12-29 19:23:01 +0100 | [diff] [blame] | 618 | pl2303_vendor_write(serial, 0x0, 0x0); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 619 | } |
| 620 | |
Thiago Galesi | 372db8a | 2006-07-31 15:39:27 -0300 | [diff] [blame] | 621 | kfree(buf); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 622 | } |
| 623 | |
Alan Cox | 335f851 | 2009-06-11 12:26:29 +0100 | [diff] [blame] | 624 | static void pl2303_dtr_rts(struct usb_serial_port *port, int on) |
Thiago Galesi | 572d313 | 2006-07-29 10:46:37 -0300 | [diff] [blame] | 625 | { |
| 626 | struct pl2303_private *priv = usb_get_serial_port_data(port); |
| 627 | unsigned long flags; |
Alan Cox | 335f851 | 2009-06-11 12:26:29 +0100 | [diff] [blame] | 628 | u8 control; |
| 629 | |
| 630 | spin_lock_irqsave(&priv->lock, flags); |
Alan Cox | 335f851 | 2009-06-11 12:26:29 +0100 | [diff] [blame] | 631 | if (on) |
| 632 | priv->line_control |= (CONTROL_DTR | CONTROL_RTS); |
| 633 | else |
| 634 | priv->line_control &= ~(CONTROL_DTR | CONTROL_RTS); |
| 635 | control = priv->line_control; |
| 636 | spin_unlock_irqrestore(&priv->lock, flags); |
Johan Hovold | ccfe818 | 2013-12-29 19:23:00 +0100 | [diff] [blame] | 637 | |
Johan Hovold | f45d0a5 | 2013-03-21 12:36:22 +0100 | [diff] [blame] | 638 | pl2303_set_control_lines(port, control); |
Alan Cox | 335f851 | 2009-06-11 12:26:29 +0100 | [diff] [blame] | 639 | } |
| 640 | |
| 641 | static void pl2303_close(struct usb_serial_port *port) |
| 642 | { |
Johan Hovold | 8b0127b | 2010-03-17 23:06:04 +0100 | [diff] [blame] | 643 | usb_serial_generic_close(port); |
Thiago Galesi | 572d313 | 2006-07-29 10:46:37 -0300 | [diff] [blame] | 644 | usb_kill_urb(port->interrupt_in_urb); |
Johan Hovold | 52772a7 | 2015-02-26 16:50:24 +0100 | [diff] [blame] | 645 | pl2303_set_break(port, false); |
Thiago Galesi | 572d313 | 2006-07-29 10:46:37 -0300 | [diff] [blame] | 646 | } |
| 647 | |
Alan Cox | a509a7e | 2009-09-19 13:13:26 -0700 | [diff] [blame] | 648 | static int pl2303_open(struct tty_struct *tty, struct usb_serial_port *port) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 649 | { |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 650 | struct usb_serial *serial = port->serial; |
Johan Hovold | 8bf769e | 2012-10-15 15:47:21 +0200 | [diff] [blame] | 651 | struct pl2303_serial_private *spriv = usb_get_serial_data(serial); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 652 | int result; |
| 653 | |
Johan Hovold | 23c6acb | 2013-12-29 19:23:08 +0100 | [diff] [blame] | 654 | if (spriv->quirks & PL2303_QUIRK_LEGACY) { |
Dariusz M | 1694899 | 2005-07-28 18:06:13 +0200 | [diff] [blame] | 655 | usb_clear_halt(serial->dev, port->write_urb->pipe); |
| 656 | usb_clear_halt(serial->dev, port->read_urb->pipe); |
Sarah Sharp | 3e15250 | 2007-12-14 14:08:35 -0800 | [diff] [blame] | 657 | } else { |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 658 | /* reset upstream data pipes */ |
Johan Hovold | 362eb02 | 2013-12-29 19:23:01 +0100 | [diff] [blame] | 659 | pl2303_vendor_write(serial, 8, 0); |
| 660 | pl2303_vendor_write(serial, 9, 0); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 661 | } |
| 662 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 663 | /* Setup termios */ |
Alan Cox | 95da310 | 2008-07-22 11:09:07 +0100 | [diff] [blame] | 664 | if (tty) |
Johan Hovold | 2d8f444 | 2013-06-10 18:29:38 +0200 | [diff] [blame] | 665 | pl2303_set_termios(tty, port, NULL); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 666 | |
Thiago Galesi | 372db8a | 2006-07-31 15:39:27 -0300 | [diff] [blame] | 667 | result = usb_submit_urb(port->interrupt_in_urb, GFP_KERNEL); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 668 | if (result) { |
Johan Hovold | ccfe818 | 2013-12-29 19:23:00 +0100 | [diff] [blame] | 669 | dev_err(&port->dev, "failed to submit interrupt urb: %d\n", |
| 670 | result); |
Johan Hovold | db6e918 | 2011-11-06 19:06:34 +0100 | [diff] [blame] | 671 | return result; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 672 | } |
Johan Hovold | d4691c3 | 2011-11-06 19:06:35 +0100 | [diff] [blame] | 673 | |
Johan Hovold | f5230a5 | 2011-11-06 19:06:36 +0100 | [diff] [blame] | 674 | result = usb_serial_generic_open(tty, port); |
Johan Hovold | d4691c3 | 2011-11-06 19:06:35 +0100 | [diff] [blame] | 675 | if (result) { |
| 676 | usb_kill_urb(port->interrupt_in_urb); |
| 677 | return result; |
| 678 | } |
| 679 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 680 | return 0; |
| 681 | } |
| 682 | |
Alan Cox | 20b9d17 | 2011-02-14 16:26:50 +0000 | [diff] [blame] | 683 | static int pl2303_tiocmset(struct tty_struct *tty, |
Thiago Galesi | 372db8a | 2006-07-31 15:39:27 -0300 | [diff] [blame] | 684 | unsigned int set, unsigned int clear) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 685 | { |
Alan Cox | 95da310 | 2008-07-22 11:09:07 +0100 | [diff] [blame] | 686 | struct usb_serial_port *port = tty->driver_data; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 687 | struct pl2303_private *priv = usb_get_serial_port_data(port); |
| 688 | unsigned long flags; |
| 689 | u8 control; |
Johan Hovold | 6f1efd6 | 2012-04-25 15:56:31 +0200 | [diff] [blame] | 690 | int ret; |
Flavio Leitner | 6fdd8e8 | 2005-04-18 17:39:31 -0700 | [diff] [blame] | 691 | |
Thiago Galesi | 372db8a | 2006-07-31 15:39:27 -0300 | [diff] [blame] | 692 | spin_lock_irqsave(&priv->lock, flags); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 693 | if (set & TIOCM_RTS) |
| 694 | priv->line_control |= CONTROL_RTS; |
| 695 | if (set & TIOCM_DTR) |
| 696 | priv->line_control |= CONTROL_DTR; |
| 697 | if (clear & TIOCM_RTS) |
| 698 | priv->line_control &= ~CONTROL_RTS; |
| 699 | if (clear & TIOCM_DTR) |
| 700 | priv->line_control &= ~CONTROL_DTR; |
| 701 | control = priv->line_control; |
Thiago Galesi | 372db8a | 2006-07-31 15:39:27 -0300 | [diff] [blame] | 702 | spin_unlock_irqrestore(&priv->lock, flags); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 703 | |
Johan Hovold | 5ddbb26 | 2013-03-21 12:37:45 +0100 | [diff] [blame] | 704 | ret = pl2303_set_control_lines(port, control); |
| 705 | if (ret) |
| 706 | return usb_translate_errors(ret); |
Johan Hovold | 6f1efd6 | 2012-04-25 15:56:31 +0200 | [diff] [blame] | 707 | |
Johan Hovold | 5ddbb26 | 2013-03-21 12:37:45 +0100 | [diff] [blame] | 708 | return 0; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 709 | } |
| 710 | |
Alan Cox | 60b33c1 | 2011-02-14 16:26:14 +0000 | [diff] [blame] | 711 | static int pl2303_tiocmget(struct tty_struct *tty) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 712 | { |
Alan Cox | 95da310 | 2008-07-22 11:09:07 +0100 | [diff] [blame] | 713 | struct usb_serial_port *port = tty->driver_data; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 714 | struct pl2303_private *priv = usb_get_serial_port_data(port); |
| 715 | unsigned long flags; |
| 716 | unsigned int mcr; |
| 717 | unsigned int status; |
| 718 | unsigned int result; |
| 719 | |
Thiago Galesi | 372db8a | 2006-07-31 15:39:27 -0300 | [diff] [blame] | 720 | spin_lock_irqsave(&priv->lock, flags); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 721 | mcr = priv->line_control; |
| 722 | status = priv->line_status; |
Thiago Galesi | 372db8a | 2006-07-31 15:39:27 -0300 | [diff] [blame] | 723 | spin_unlock_irqrestore(&priv->lock, flags); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 724 | |
| 725 | result = ((mcr & CONTROL_DTR) ? TIOCM_DTR : 0) |
| 726 | | ((mcr & CONTROL_RTS) ? TIOCM_RTS : 0) |
| 727 | | ((status & UART_CTS) ? TIOCM_CTS : 0) |
| 728 | | ((status & UART_DSR) ? TIOCM_DSR : 0) |
| 729 | | ((status & UART_RING) ? TIOCM_RI : 0) |
| 730 | | ((status & UART_DCD) ? TIOCM_CD : 0); |
| 731 | |
Greg Kroah-Hartman | d8789b2 | 2012-05-03 16:39:27 -0700 | [diff] [blame] | 732 | dev_dbg(&port->dev, "%s - result = %x\n", __func__, result); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 733 | |
| 734 | return result; |
| 735 | } |
| 736 | |
Alan Cox | 335f851 | 2009-06-11 12:26:29 +0100 | [diff] [blame] | 737 | static int pl2303_carrier_raised(struct usb_serial_port *port) |
| 738 | { |
| 739 | struct pl2303_private *priv = usb_get_serial_port_data(port); |
Johan Hovold | ccfe818 | 2013-12-29 19:23:00 +0100 | [diff] [blame] | 740 | |
Alan Cox | 335f851 | 2009-06-11 12:26:29 +0100 | [diff] [blame] | 741 | if (priv->line_status & UART_DCD) |
| 742 | return 1; |
Johan Hovold | ccfe818 | 2013-12-29 19:23:00 +0100 | [diff] [blame] | 743 | |
Alan Cox | 335f851 | 2009-06-11 12:26:29 +0100 | [diff] [blame] | 744 | return 0; |
| 745 | } |
| 746 | |
Alan Cox | 00a0d0d | 2011-02-14 16:27:06 +0000 | [diff] [blame] | 747 | static int pl2303_ioctl(struct tty_struct *tty, |
Thiago Galesi | 372db8a | 2006-07-31 15:39:27 -0300 | [diff] [blame] | 748 | unsigned int cmd, unsigned long arg) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 749 | { |
John Tsiombikas | 67b9946 | 2010-02-25 17:09:08 +0200 | [diff] [blame] | 750 | struct serial_struct ser; |
Alan Cox | 95da310 | 2008-07-22 11:09:07 +0100 | [diff] [blame] | 751 | struct usb_serial_port *port = tty->driver_data; |
Greg Kroah-Hartman | d8789b2 | 2012-05-03 16:39:27 -0700 | [diff] [blame] | 752 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 753 | switch (cmd) { |
John Tsiombikas | 67b9946 | 2010-02-25 17:09:08 +0200 | [diff] [blame] | 754 | case TIOCGSERIAL: |
| 755 | memset(&ser, 0, sizeof ser); |
| 756 | ser.type = PORT_16654; |
Greg Kroah-Hartman | e5b1e20 | 2013-06-07 11:04:28 -0700 | [diff] [blame] | 757 | ser.line = port->minor; |
Greg Kroah-Hartman | 1143832 | 2013-06-06 10:32:00 -0700 | [diff] [blame] | 758 | ser.port = port->port_number; |
John Tsiombikas | 67b9946 | 2010-02-25 17:09:08 +0200 | [diff] [blame] | 759 | ser.baud_base = 460800; |
| 760 | |
| 761 | if (copy_to_user((void __user *)arg, &ser, sizeof ser)) |
| 762 | return -EFAULT; |
| 763 | |
| 764 | return 0; |
Alan Cox | 3a0f43e | 2008-07-22 11:14:49 +0100 | [diff] [blame] | 765 | default: |
Alan Cox | 3a0f43e | 2008-07-22 11:14:49 +0100 | [diff] [blame] | 766 | break; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 767 | } |
Johan Hovold | ccfe818 | 2013-12-29 19:23:00 +0100 | [diff] [blame] | 768 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 769 | return -ENOIOCTLCMD; |
| 770 | } |
| 771 | |
Johan Hovold | 52772a7 | 2015-02-26 16:50:24 +0100 | [diff] [blame] | 772 | static void pl2303_set_break(struct usb_serial_port *port, bool enable) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 773 | { |
| 774 | struct usb_serial *serial = port->serial; |
| 775 | u16 state; |
| 776 | int result; |
| 777 | |
Johan Hovold | 52772a7 | 2015-02-26 16:50:24 +0100 | [diff] [blame] | 778 | if (enable) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 779 | state = BREAK_ON; |
Johan Hovold | 52772a7 | 2015-02-26 16:50:24 +0100 | [diff] [blame] | 780 | else |
| 781 | state = BREAK_OFF; |
Johan Hovold | ccfe818 | 2013-12-29 19:23:00 +0100 | [diff] [blame] | 782 | |
Greg Kroah-Hartman | d8789b2 | 2012-05-03 16:39:27 -0700 | [diff] [blame] | 783 | dev_dbg(&port->dev, "%s - turning break %s\n", __func__, |
Alan Cox | 3a0f43e | 2008-07-22 11:14:49 +0100 | [diff] [blame] | 784 | state == BREAK_OFF ? "off" : "on"); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 785 | |
Thiago Galesi | 372db8a | 2006-07-31 15:39:27 -0300 | [diff] [blame] | 786 | result = usb_control_msg(serial->dev, usb_sndctrlpipe(serial->dev, 0), |
| 787 | BREAK_REQUEST, BREAK_REQUEST_TYPE, state, |
| 788 | 0, NULL, 0, 100); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 789 | if (result) |
Greg Kroah-Hartman | d8789b2 | 2012-05-03 16:39:27 -0700 | [diff] [blame] | 790 | dev_err(&port->dev, "error sending break = %d\n", result); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 791 | } |
| 792 | |
Johan Hovold | 52772a7 | 2015-02-26 16:50:24 +0100 | [diff] [blame] | 793 | static void pl2303_break_ctl(struct tty_struct *tty, int state) |
| 794 | { |
| 795 | struct usb_serial_port *port = tty->driver_data; |
| 796 | |
| 797 | pl2303_set_break(port, state); |
| 798 | } |
| 799 | |
Flavio Leitner | 97bb13e | 2005-04-18 17:39:31 -0700 | [diff] [blame] | 800 | static void pl2303_update_line_status(struct usb_serial_port *port, |
| 801 | unsigned char *data, |
| 802 | unsigned int actual_length) |
| 803 | { |
Johan Hovold | 228e410 | 2013-12-29 19:23:05 +0100 | [diff] [blame] | 804 | struct usb_serial *serial = port->serial; |
| 805 | struct pl2303_serial_private *spriv = usb_get_serial_data(serial); |
Flavio Leitner | 97bb13e | 2005-04-18 17:39:31 -0700 | [diff] [blame] | 806 | struct pl2303_private *priv = usb_get_serial_port_data(port); |
Libor Pechacek | d14fc1a | 2011-01-14 14:30:21 +0100 | [diff] [blame] | 807 | struct tty_struct *tty; |
Flavio Leitner | 97bb13e | 2005-04-18 17:39:31 -0700 | [diff] [blame] | 808 | unsigned long flags; |
Johan Hovold | 228e410 | 2013-12-29 19:23:05 +0100 | [diff] [blame] | 809 | unsigned int status_idx = UART_STATE_INDEX; |
Johan Hovold | 6020c3b | 2014-01-02 22:49:21 +0100 | [diff] [blame] | 810 | u8 status; |
| 811 | u8 delta; |
Flavio Leitner | 97bb13e | 2005-04-18 17:39:31 -0700 | [diff] [blame] | 812 | |
Johan Hovold | 228e410 | 2013-12-29 19:23:05 +0100 | [diff] [blame] | 813 | if (spriv->quirks & PL2303_QUIRK_UART_STATE_IDX0) |
| 814 | status_idx = 0; |
Thiago Galesi | 9c53761 | 2006-07-29 10:47:12 -0300 | [diff] [blame] | 815 | |
Johan Hovold | 228e410 | 2013-12-29 19:23:05 +0100 | [diff] [blame] | 816 | if (actual_length < status_idx + 1) |
Luiz Fernando N. Capitulino | a009b75 | 2006-07-25 16:58:30 -0300 | [diff] [blame] | 817 | return; |
Flavio Leitner | 97bb13e | 2005-04-18 17:39:31 -0700 | [diff] [blame] | 818 | |
Johan Hovold | 6020c3b | 2014-01-02 22:49:21 +0100 | [diff] [blame] | 819 | status = data[status_idx]; |
| 820 | |
Alan Cox | 3a0f43e | 2008-07-22 11:14:49 +0100 | [diff] [blame] | 821 | /* Save off the uart status for others to look at */ |
Flavio Leitner | 97bb13e | 2005-04-18 17:39:31 -0700 | [diff] [blame] | 822 | spin_lock_irqsave(&priv->lock, flags); |
Johan Hovold | 6020c3b | 2014-01-02 22:49:21 +0100 | [diff] [blame] | 823 | delta = priv->line_status ^ status; |
| 824 | priv->line_status = status; |
Flavio Leitner | 97bb13e | 2005-04-18 17:39:31 -0700 | [diff] [blame] | 825 | spin_unlock_irqrestore(&priv->lock, flags); |
Johan Hovold | ccfe818 | 2013-12-29 19:23:00 +0100 | [diff] [blame] | 826 | |
Johan Hovold | 6020c3b | 2014-01-02 22:49:21 +0100 | [diff] [blame] | 827 | if (status & UART_BREAK_ERROR) |
Jason Wessel | 430eb0d | 2009-05-29 13:34:16 -0500 | [diff] [blame] | 828 | usb_serial_handle_break(port); |
Johan Hovold | ccfe818 | 2013-12-29 19:23:00 +0100 | [diff] [blame] | 829 | |
Johan Hovold | dbfd286 | 2014-01-02 22:49:22 +0100 | [diff] [blame] | 830 | if (delta & UART_STATE_MSR_MASK) { |
Johan Hovold | a4bcb29 | 2014-01-02 22:49:23 +0100 | [diff] [blame] | 831 | if (delta & UART_CTS) |
| 832 | port->icount.cts++; |
| 833 | if (delta & UART_DSR) |
| 834 | port->icount.dsr++; |
| 835 | if (delta & UART_RING) |
| 836 | port->icount.rng++; |
Johan Hovold | dbfd286 | 2014-01-02 22:49:22 +0100 | [diff] [blame] | 837 | if (delta & UART_DCD) { |
Johan Hovold | a4bcb29 | 2014-01-02 22:49:23 +0100 | [diff] [blame] | 838 | port->icount.dcd++; |
Johan Hovold | dbfd286 | 2014-01-02 22:49:22 +0100 | [diff] [blame] | 839 | tty = tty_port_tty_get(&port->port); |
| 840 | if (tty) { |
| 841 | usb_serial_handle_dcd_change(port, tty, |
Johan Hovold | 6020c3b | 2014-01-02 22:49:21 +0100 | [diff] [blame] | 842 | status & UART_DCD); |
Johan Hovold | dbfd286 | 2014-01-02 22:49:22 +0100 | [diff] [blame] | 843 | tty_kref_put(tty); |
| 844 | } |
Johan Hovold | 6020c3b | 2014-01-02 22:49:21 +0100 | [diff] [blame] | 845 | } |
Johan Hovold | dbfd286 | 2014-01-02 22:49:22 +0100 | [diff] [blame] | 846 | |
| 847 | wake_up_interruptible(&port->port.delta_msr_wait); |
Johan Hovold | 6020c3b | 2014-01-02 22:49:21 +0100 | [diff] [blame] | 848 | } |
Flavio Leitner | 97bb13e | 2005-04-18 17:39:31 -0700 | [diff] [blame] | 849 | } |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 850 | |
David Howells | 7d12e78 | 2006-10-05 14:55:46 +0100 | [diff] [blame] | 851 | static void pl2303_read_int_callback(struct urb *urb) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 852 | { |
Ming Lei | cdc9779 | 2008-02-24 18:41:47 +0800 | [diff] [blame] | 853 | struct usb_serial_port *port = urb->context; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 854 | unsigned char *data = urb->transfer_buffer; |
Flavio Leitner | 97bb13e | 2005-04-18 17:39:31 -0700 | [diff] [blame] | 855 | unsigned int actual_length = urb->actual_length; |
Greg Kroah-Hartman | 461d696 | 2007-06-15 15:44:13 -0700 | [diff] [blame] | 856 | int status = urb->status; |
| 857 | int retval; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 858 | |
Greg Kroah-Hartman | 461d696 | 2007-06-15 15:44:13 -0700 | [diff] [blame] | 859 | switch (status) { |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 860 | case 0: |
| 861 | /* success */ |
| 862 | break; |
| 863 | case -ECONNRESET: |
| 864 | case -ENOENT: |
| 865 | case -ESHUTDOWN: |
| 866 | /* this urb is terminated, clean up */ |
Greg Kroah-Hartman | d8789b2 | 2012-05-03 16:39:27 -0700 | [diff] [blame] | 867 | dev_dbg(&port->dev, "%s - urb shutting down with status: %d\n", |
| 868 | __func__, status); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 869 | return; |
| 870 | default: |
Greg Kroah-Hartman | d8789b2 | 2012-05-03 16:39:27 -0700 | [diff] [blame] | 871 | dev_dbg(&port->dev, "%s - nonzero urb status received: %d\n", |
| 872 | __func__, status); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 873 | goto exit; |
| 874 | } |
| 875 | |
Greg Kroah-Hartman | 59d33f2 | 2012-09-18 09:58:57 +0100 | [diff] [blame] | 876 | usb_serial_debug_data(&port->dev, __func__, |
Thiago Galesi | 372db8a | 2006-07-31 15:39:27 -0300 | [diff] [blame] | 877 | urb->actual_length, urb->transfer_buffer); |
| 878 | |
Flavio Leitner | 97bb13e | 2005-04-18 17:39:31 -0700 | [diff] [blame] | 879 | pl2303_update_line_status(port, data, actual_length); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 880 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 881 | exit: |
Greg Kroah-Hartman | 461d696 | 2007-06-15 15:44:13 -0700 | [diff] [blame] | 882 | retval = usb_submit_urb(urb, GFP_ATOMIC); |
Johan Hovold | ccfe818 | 2013-12-29 19:23:00 +0100 | [diff] [blame] | 883 | if (retval) { |
Greg Kroah-Hartman | d8789b2 | 2012-05-03 16:39:27 -0700 | [diff] [blame] | 884 | dev_err(&port->dev, |
Thiago Galesi | 372db8a | 2006-07-31 15:39:27 -0300 | [diff] [blame] | 885 | "%s - usb_submit_urb failed with result %d\n", |
Harvey Harrison | 441b62c | 2008-03-03 16:08:34 -0800 | [diff] [blame] | 886 | __func__, retval); |
Johan Hovold | ccfe818 | 2013-12-29 19:23:00 +0100 | [diff] [blame] | 887 | } |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 888 | } |
| 889 | |
Johan Hovold | f08e07a | 2010-03-17 23:05:58 +0100 | [diff] [blame] | 890 | static void pl2303_process_read_urb(struct urb *urb) |
Alan Cox | d4fc4a7 | 2009-07-09 13:36:58 +0100 | [diff] [blame] | 891 | { |
Johan Hovold | f08e07a | 2010-03-17 23:05:58 +0100 | [diff] [blame] | 892 | struct usb_serial_port *port = urb->context; |
| 893 | struct pl2303_private *priv = usb_get_serial_port_data(port); |
Alan Cox | d4fc4a7 | 2009-07-09 13:36:58 +0100 | [diff] [blame] | 894 | unsigned char *data = urb->transfer_buffer; |
Alan Cox | d4fc4a7 | 2009-07-09 13:36:58 +0100 | [diff] [blame] | 895 | char tty_flag = TTY_NORMAL; |
Johan Hovold | f08e07a | 2010-03-17 23:05:58 +0100 | [diff] [blame] | 896 | unsigned long flags; |
| 897 | u8 line_status; |
| 898 | int i; |
| 899 | |
| 900 | /* update line status */ |
| 901 | spin_lock_irqsave(&priv->lock, flags); |
| 902 | line_status = priv->line_status; |
| 903 | priv->line_status &= ~UART_STATE_TRANSIENT_MASK; |
| 904 | spin_unlock_irqrestore(&priv->lock, flags); |
Johan Hovold | f08e07a | 2010-03-17 23:05:58 +0100 | [diff] [blame] | 905 | |
| 906 | if (!urb->actual_length) |
| 907 | return; |
| 908 | |
Johan Hovold | ccfe818 | 2013-12-29 19:23:00 +0100 | [diff] [blame] | 909 | /* |
| 910 | * Break takes precedence over parity, which takes precedence over |
| 911 | * framing errors. |
| 912 | */ |
Alan Cox | d4fc4a7 | 2009-07-09 13:36:58 +0100 | [diff] [blame] | 913 | if (line_status & UART_BREAK_ERROR) |
| 914 | tty_flag = TTY_BREAK; |
| 915 | else if (line_status & UART_PARITY_ERROR) |
| 916 | tty_flag = TTY_PARITY; |
| 917 | else if (line_status & UART_FRAME_ERROR) |
| 918 | tty_flag = TTY_FRAME; |
Alan Cox | d4fc4a7 | 2009-07-09 13:36:58 +0100 | [diff] [blame] | 919 | |
Johan Hovold | 3ba19fe | 2013-06-26 16:47:30 +0200 | [diff] [blame] | 920 | if (tty_flag != TTY_NORMAL) |
| 921 | dev_dbg(&port->dev, "%s - tty_flag = %d\n", __func__, |
| 922 | tty_flag); |
Alan Cox | d4fc4a7 | 2009-07-09 13:36:58 +0100 | [diff] [blame] | 923 | /* overrun is special, not associated with a char */ |
| 924 | if (line_status & UART_OVERRUN_ERROR) |
Jiri Slaby | 92a19f9 | 2013-01-03 15:53:03 +0100 | [diff] [blame] | 925 | tty_insert_flip_char(&port->port, 0, TTY_OVERRUN); |
Johan Hovold | 9388e2e | 2009-10-08 11:36:46 +0200 | [diff] [blame] | 926 | |
Johan Hovold | d45cc8d | 2010-05-08 15:18:41 +0200 | [diff] [blame] | 927 | if (port->port.console && port->sysrq) { |
Alan Cox | d4fc4a7 | 2009-07-09 13:36:58 +0100 | [diff] [blame] | 928 | for (i = 0; i < urb->actual_length; ++i) |
Dmitry Torokhov | 6ee9f4b | 2010-08-17 21:15:47 -0700 | [diff] [blame] | 929 | if (!usb_serial_handle_sysrq_char(port, data[i])) |
Jiri Slaby | 92a19f9 | 2013-01-03 15:53:03 +0100 | [diff] [blame] | 930 | tty_insert_flip_char(&port->port, data[i], |
| 931 | tty_flag); |
Johan Hovold | d45cc8d | 2010-05-08 15:18:41 +0200 | [diff] [blame] | 932 | } else { |
Jiri Slaby | 2f69335 | 2013-01-03 15:53:02 +0100 | [diff] [blame] | 933 | tty_insert_flip_string_fixed_flag(&port->port, data, tty_flag, |
Johan Hovold | d45cc8d | 2010-05-08 15:18:41 +0200 | [diff] [blame] | 934 | urb->actual_length); |
Johan Hovold | 9388e2e | 2009-10-08 11:36:46 +0200 | [diff] [blame] | 935 | } |
Johan Hovold | f08e07a | 2010-03-17 23:05:58 +0100 | [diff] [blame] | 936 | |
Jiri Slaby | 2e124b4 | 2013-01-03 15:53:06 +0100 | [diff] [blame] | 937 | tty_flip_buffer_push(&port->port); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 938 | } |
| 939 | |
Thiago Galesi | 572d313 | 2006-07-29 10:46:37 -0300 | [diff] [blame] | 940 | static struct usb_serial_driver pl2303_device = { |
| 941 | .driver = { |
| 942 | .owner = THIS_MODULE, |
| 943 | .name = "pl2303", |
| 944 | }, |
| 945 | .id_table = id_table, |
Thiago Galesi | 572d313 | 2006-07-29 10:46:37 -0300 | [diff] [blame] | 946 | .num_ports = 1, |
Johan Hovold | 7919c2f | 2010-03-17 23:00:41 +0100 | [diff] [blame] | 947 | .bulk_in_size = 256, |
Johan Hovold | 3efeaff | 2010-03-17 23:00:40 +0100 | [diff] [blame] | 948 | .bulk_out_size = 256, |
Thiago Galesi | 572d313 | 2006-07-29 10:46:37 -0300 | [diff] [blame] | 949 | .open = pl2303_open, |
| 950 | .close = pl2303_close, |
Johan Hovold | ccfe818 | 2013-12-29 19:23:00 +0100 | [diff] [blame] | 951 | .dtr_rts = pl2303_dtr_rts, |
Alan Cox | 335f851 | 2009-06-11 12:26:29 +0100 | [diff] [blame] | 952 | .carrier_raised = pl2303_carrier_raised, |
Thiago Galesi | 572d313 | 2006-07-29 10:46:37 -0300 | [diff] [blame] | 953 | .ioctl = pl2303_ioctl, |
| 954 | .break_ctl = pl2303_break_ctl, |
| 955 | .set_termios = pl2303_set_termios, |
| 956 | .tiocmget = pl2303_tiocmget, |
| 957 | .tiocmset = pl2303_tiocmset, |
Johan Hovold | a4bcb29 | 2014-01-02 22:49:23 +0100 | [diff] [blame] | 958 | .tiocmiwait = usb_serial_generic_tiocmiwait, |
Johan Hovold | f08e07a | 2010-03-17 23:05:58 +0100 | [diff] [blame] | 959 | .process_read_urb = pl2303_process_read_urb, |
Thiago Galesi | 572d313 | 2006-07-29 10:46:37 -0300 | [diff] [blame] | 960 | .read_int_callback = pl2303_read_int_callback, |
Johan Hovold | 228e410 | 2013-12-29 19:23:05 +0100 | [diff] [blame] | 961 | .probe = pl2303_probe, |
Thiago Galesi | 572d313 | 2006-07-29 10:46:37 -0300 | [diff] [blame] | 962 | .attach = pl2303_startup, |
Alan Stern | f9c99bb | 2009-06-02 11:53:55 -0400 | [diff] [blame] | 963 | .release = pl2303_release, |
Johan Hovold | 8bf769e | 2012-10-15 15:47:21 +0200 | [diff] [blame] | 964 | .port_probe = pl2303_port_probe, |
| 965 | .port_remove = pl2303_port_remove, |
Thiago Galesi | 572d313 | 2006-07-29 10:46:37 -0300 | [diff] [blame] | 966 | }; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 967 | |
Alan Stern | f667dda | 2012-02-23 14:57:18 -0500 | [diff] [blame] | 968 | static struct usb_serial_driver * const serial_drivers[] = { |
| 969 | &pl2303_device, NULL |
| 970 | }; |
| 971 | |
Greg Kroah-Hartman | 68e2411 | 2012-05-08 15:46:14 -0700 | [diff] [blame] | 972 | module_usb_serial_driver(serial_drivers, id_table); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 973 | |
Johan Hovold | ccfe818 | 2013-12-29 19:23:00 +0100 | [diff] [blame] | 974 | MODULE_DESCRIPTION("Prolific PL2303 USB to serial adaptor driver"); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 975 | MODULE_LICENSE("GPL"); |