^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1) // SPDX-License-Identifier: GPL-2.0
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2) /*
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 3) * Prolific PL2303 USB to serial adaptor driver
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 4) *
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 5) * Copyright (C) 2001-2007 Greg Kroah-Hartman (greg@kroah.com)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 6) * Copyright (C) 2003 IBM Corp.
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 7) *
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 8) * Original driver for 2.2.x by anonymous
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 9) *
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 10) * See Documentation/usb/usb-serial.rst for more information on using this
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 11) * driver
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 12) */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 13)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 14) #include <linux/kernel.h>
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 15) #include <linux/errno.h>
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 16) #include <linux/slab.h>
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 17) #include <linux/tty.h>
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 18) #include <linux/tty_driver.h>
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 19) #include <linux/tty_flip.h>
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 20) #include <linux/serial.h>
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 21) #include <linux/module.h>
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 22) #include <linux/moduleparam.h>
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 23) #include <linux/spinlock.h>
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 24) #include <linux/uaccess.h>
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 25) #include <linux/usb.h>
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 26) #include <linux/usb/serial.h>
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 27) #include <asm/unaligned.h>
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 28) #include "pl2303.h"
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 29)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 30)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 31) #define PL2303_QUIRK_UART_STATE_IDX0 BIT(0)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 32) #define PL2303_QUIRK_LEGACY BIT(1)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 33) #define PL2303_QUIRK_ENDPOINT_HACK BIT(2)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 34)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 35) static const struct usb_device_id id_table[] = {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 36) { USB_DEVICE(PL2303_VENDOR_ID, PL2303_PRODUCT_ID),
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 37) .driver_info = PL2303_QUIRK_ENDPOINT_HACK },
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 38) { USB_DEVICE(PL2303_VENDOR_ID, PL2303_PRODUCT_ID_RSAQ2) },
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 39) { USB_DEVICE(PL2303_VENDOR_ID, PL2303_PRODUCT_ID_DCU11) },
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 40) { USB_DEVICE(PL2303_VENDOR_ID, PL2303_PRODUCT_ID_RSAQ3) },
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 41) { USB_DEVICE(PL2303_VENDOR_ID, PL2303_PRODUCT_ID_CHILITAG) },
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 42) { USB_DEVICE(PL2303_VENDOR_ID, PL2303_PRODUCT_ID_PHAROS) },
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 43) { USB_DEVICE(PL2303_VENDOR_ID, PL2303_PRODUCT_ID_ALDIGA) },
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 44) { USB_DEVICE(PL2303_VENDOR_ID, PL2303_PRODUCT_ID_MMX) },
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 45) { USB_DEVICE(PL2303_VENDOR_ID, PL2303_PRODUCT_ID_GPRS) },
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 46) { USB_DEVICE(PL2303_VENDOR_ID, PL2303_PRODUCT_ID_HCR331) },
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 47) { USB_DEVICE(PL2303_VENDOR_ID, PL2303_PRODUCT_ID_MOTOROLA) },
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 48) { USB_DEVICE(PL2303_VENDOR_ID, PL2303_PRODUCT_ID_ZTEK) },
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 49) { USB_DEVICE(PL2303_VENDOR_ID, PL2303_PRODUCT_ID_TB) },
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 50) { USB_DEVICE(PL2303_VENDOR_ID, PL2303_PRODUCT_ID_GC) },
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 51) { USB_DEVICE(PL2303_VENDOR_ID, PL2303_PRODUCT_ID_GB) },
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 52) { USB_DEVICE(PL2303_VENDOR_ID, PL2303_PRODUCT_ID_GT) },
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 53) { USB_DEVICE(PL2303_VENDOR_ID, PL2303_PRODUCT_ID_GL) },
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 54) { USB_DEVICE(PL2303_VENDOR_ID, PL2303_PRODUCT_ID_GE) },
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 55) { USB_DEVICE(PL2303_VENDOR_ID, PL2303_PRODUCT_ID_GS) },
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 56) { USB_DEVICE(IODATA_VENDOR_ID, IODATA_PRODUCT_ID) },
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 57) { USB_DEVICE(IODATA_VENDOR_ID, IODATA_PRODUCT_ID_RSAQ5) },
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 58) { USB_DEVICE(ATEN_VENDOR_ID, ATEN_PRODUCT_ID),
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 59) .driver_info = PL2303_QUIRK_ENDPOINT_HACK },
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 60) { USB_DEVICE(ATEN_VENDOR_ID, ATEN_PRODUCT_UC485),
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 61) .driver_info = PL2303_QUIRK_ENDPOINT_HACK },
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 62) { USB_DEVICE(ATEN_VENDOR_ID, ATEN_PRODUCT_UC232B),
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 63) .driver_info = PL2303_QUIRK_ENDPOINT_HACK },
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 64) { USB_DEVICE(ATEN_VENDOR_ID, ATEN_PRODUCT_ID2) },
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 65) { USB_DEVICE(ATEN_VENDOR_ID2, ATEN_PRODUCT_ID) },
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 66) { USB_DEVICE(ELCOM_VENDOR_ID, ELCOM_PRODUCT_ID) },
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 67) { USB_DEVICE(ELCOM_VENDOR_ID, ELCOM_PRODUCT_ID_UCSGT) },
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 68) { USB_DEVICE(ITEGNO_VENDOR_ID, ITEGNO_PRODUCT_ID) },
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 69) { USB_DEVICE(ITEGNO_VENDOR_ID, ITEGNO_PRODUCT_ID_2080) },
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 70) { USB_DEVICE(MA620_VENDOR_ID, MA620_PRODUCT_ID) },
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 71) { USB_DEVICE(RATOC_VENDOR_ID, RATOC_PRODUCT_ID) },
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 72) { USB_DEVICE(TRIPP_VENDOR_ID, TRIPP_PRODUCT_ID) },
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 73) { USB_DEVICE(RADIOSHACK_VENDOR_ID, RADIOSHACK_PRODUCT_ID) },
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 74) { USB_DEVICE(DCU10_VENDOR_ID, DCU10_PRODUCT_ID) },
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 75) { USB_DEVICE(SITECOM_VENDOR_ID, SITECOM_PRODUCT_ID) },
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 76) { USB_DEVICE(ALCATEL_VENDOR_ID, ALCATEL_PRODUCT_ID) },
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 77) { USB_DEVICE(SIEMENS_VENDOR_ID, SIEMENS_PRODUCT_ID_SX1),
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 78) .driver_info = PL2303_QUIRK_UART_STATE_IDX0 },
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 79) { USB_DEVICE(SIEMENS_VENDOR_ID, SIEMENS_PRODUCT_ID_X65),
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 80) .driver_info = PL2303_QUIRK_UART_STATE_IDX0 },
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 81) { USB_DEVICE(SIEMENS_VENDOR_ID, SIEMENS_PRODUCT_ID_X75),
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 82) .driver_info = PL2303_QUIRK_UART_STATE_IDX0 },
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 83) { USB_DEVICE(SIEMENS_VENDOR_ID, SIEMENS_PRODUCT_ID_EF81),
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 84) .driver_info = PL2303_QUIRK_ENDPOINT_HACK },
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 85) { USB_DEVICE(BENQ_VENDOR_ID, BENQ_PRODUCT_ID_S81) }, /* Benq/Siemens S81 */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 86) { USB_DEVICE(SYNTECH_VENDOR_ID, SYNTECH_PRODUCT_ID) },
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 87) { USB_DEVICE(NOKIA_CA42_VENDOR_ID, NOKIA_CA42_PRODUCT_ID) },
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 88) { USB_DEVICE(CA_42_CA42_VENDOR_ID, CA_42_CA42_PRODUCT_ID) },
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 89) { USB_DEVICE(SAGEM_VENDOR_ID, SAGEM_PRODUCT_ID) },
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 90) { USB_DEVICE(LEADTEK_VENDOR_ID, LEADTEK_9531_PRODUCT_ID) },
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 91) { USB_DEVICE(SPEEDDRAGON_VENDOR_ID, SPEEDDRAGON_PRODUCT_ID) },
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 92) { USB_DEVICE(DATAPILOT_U2_VENDOR_ID, DATAPILOT_U2_PRODUCT_ID) },
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 93) { USB_DEVICE(BELKIN_VENDOR_ID, BELKIN_PRODUCT_ID) },
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 94) { USB_DEVICE(ALCOR_VENDOR_ID, ALCOR_PRODUCT_ID),
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 95) .driver_info = PL2303_QUIRK_ENDPOINT_HACK },
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 96) { USB_DEVICE(WS002IN_VENDOR_ID, WS002IN_PRODUCT_ID) },
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 97) { USB_DEVICE(COREGA_VENDOR_ID, COREGA_PRODUCT_ID) },
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 98) { USB_DEVICE(YCCABLE_VENDOR_ID, YCCABLE_PRODUCT_ID) },
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 99) { USB_DEVICE(SUPERIAL_VENDOR_ID, SUPERIAL_PRODUCT_ID) },
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 100) { USB_DEVICE(HP_VENDOR_ID, HP_LD220_PRODUCT_ID) },
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 101) { USB_DEVICE(HP_VENDOR_ID, HP_LD220TA_PRODUCT_ID) },
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 102) { USB_DEVICE(HP_VENDOR_ID, HP_LD381_PRODUCT_ID) },
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 103) { USB_DEVICE(HP_VENDOR_ID, HP_LD381GC_PRODUCT_ID) },
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 104) { USB_DEVICE(HP_VENDOR_ID, HP_LD960_PRODUCT_ID) },
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 105) { USB_DEVICE(HP_VENDOR_ID, HP_LD960TA_PRODUCT_ID) },
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 106) { USB_DEVICE(HP_VENDOR_ID, HP_LCM220_PRODUCT_ID) },
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 107) { USB_DEVICE(HP_VENDOR_ID, HP_LCM960_PRODUCT_ID) },
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 108) { USB_DEVICE(HP_VENDOR_ID, HP_LM920_PRODUCT_ID) },
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 109) { USB_DEVICE(HP_VENDOR_ID, HP_LM940_PRODUCT_ID) },
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 110) { USB_DEVICE(HP_VENDOR_ID, HP_TD620_PRODUCT_ID) },
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 111) { USB_DEVICE(CRESSI_VENDOR_ID, CRESSI_EDY_PRODUCT_ID) },
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 112) { USB_DEVICE(ZEAGLE_VENDOR_ID, ZEAGLE_N2ITION3_PRODUCT_ID) },
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 113) { USB_DEVICE(SONY_VENDOR_ID, SONY_QN3USB_PRODUCT_ID) },
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 114) { USB_DEVICE(SANWA_VENDOR_ID, SANWA_PRODUCT_ID) },
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 115) { USB_DEVICE(ADLINK_VENDOR_ID, ADLINK_ND6530_PRODUCT_ID) },
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 116) { USB_DEVICE(ADLINK_VENDOR_ID, ADLINK_ND6530GC_PRODUCT_ID) },
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 117) { USB_DEVICE(SMART_VENDOR_ID, SMART_PRODUCT_ID) },
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 118) { USB_DEVICE(AT_VENDOR_ID, AT_VTKIT3_PRODUCT_ID) },
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 119) { USB_DEVICE(IBM_VENDOR_ID, IBM_PRODUCT_ID) },
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 120) { } /* Terminating entry */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 121) };
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 122)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 123) MODULE_DEVICE_TABLE(usb, id_table);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 124)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 125) #define SET_LINE_REQUEST_TYPE 0x21
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 126) #define SET_LINE_REQUEST 0x20
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 127)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 128) #define SET_CONTROL_REQUEST_TYPE 0x21
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 129) #define SET_CONTROL_REQUEST 0x22
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 130) #define CONTROL_DTR 0x01
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 131) #define CONTROL_RTS 0x02
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 132)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 133) #define BREAK_REQUEST_TYPE 0x21
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 134) #define BREAK_REQUEST 0x23
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 135) #define BREAK_ON 0xffff
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 136) #define BREAK_OFF 0x0000
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 137)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 138) #define GET_LINE_REQUEST_TYPE 0xa1
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 139) #define GET_LINE_REQUEST 0x21
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 140)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 141) #define VENDOR_WRITE_REQUEST_TYPE 0x40
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 142) #define VENDOR_WRITE_REQUEST 0x01
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 143) #define VENDOR_WRITE_NREQUEST 0x80
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 144)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 145) #define VENDOR_READ_REQUEST_TYPE 0xc0
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 146) #define VENDOR_READ_REQUEST 0x01
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 147) #define VENDOR_READ_NREQUEST 0x81
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 148)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 149) #define UART_STATE_INDEX 8
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 150) #define UART_STATE_MSR_MASK 0x8b
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 151) #define UART_STATE_TRANSIENT_MASK 0x74
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 152) #define UART_DCD 0x01
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 153) #define UART_DSR 0x02
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 154) #define UART_BREAK_ERROR 0x04
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 155) #define UART_RING 0x08
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 156) #define UART_FRAME_ERROR 0x10
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 157) #define UART_PARITY_ERROR 0x20
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 158) #define UART_OVERRUN_ERROR 0x40
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 159) #define UART_CTS 0x80
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 160)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 161) #define PL2303_FLOWCTRL_MASK 0xf0
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 162)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 163) #define PL2303_READ_TYPE_HX_STATUS 0x8080
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 164)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 165) #define PL2303_HXN_RESET_REG 0x07
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 166) #define PL2303_HXN_RESET_UPSTREAM_PIPE 0x02
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 167) #define PL2303_HXN_RESET_DOWNSTREAM_PIPE 0x01
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 168)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 169) #define PL2303_HXN_FLOWCTRL_REG 0x0a
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 170) #define PL2303_HXN_FLOWCTRL_MASK 0x1c
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 171) #define PL2303_HXN_FLOWCTRL_NONE 0x1c
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 172) #define PL2303_HXN_FLOWCTRL_RTS_CTS 0x18
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 173) #define PL2303_HXN_FLOWCTRL_XON_XOFF 0x0c
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 174)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 175) static void pl2303_set_break(struct usb_serial_port *port, bool enable);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 176)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 177) enum pl2303_type {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 178) TYPE_01, /* Type 0 and 1 (difference unknown) */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 179) TYPE_HX, /* HX version of the pl2303 chip */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 180) TYPE_HXN, /* HXN version of the pl2303 chip */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 181) TYPE_COUNT
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 182) };
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 183)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 184) struct pl2303_type_data {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 185) speed_t max_baud_rate;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 186) unsigned long quirks;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 187) unsigned int no_autoxonxoff:1;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 188) unsigned int no_divisors:1;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 189) };
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 190)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 191) struct pl2303_serial_private {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 192) const struct pl2303_type_data *type;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 193) unsigned long quirks;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 194) };
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 195)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 196) struct pl2303_private {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 197) spinlock_t lock;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 198) u8 line_control;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 199) u8 line_status;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 200)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 201) u8 line_settings[7];
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 202) };
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 203)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 204) static const struct pl2303_type_data pl2303_type_data[TYPE_COUNT] = {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 205) [TYPE_01] = {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 206) .max_baud_rate = 1228800,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 207) .quirks = PL2303_QUIRK_LEGACY,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 208) .no_autoxonxoff = true,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 209) },
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 210) [TYPE_HX] = {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 211) .max_baud_rate = 12000000,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 212) },
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 213) [TYPE_HXN] = {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 214) .max_baud_rate = 12000000,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 215) .no_divisors = true,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 216) },
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 217) };
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 218)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 219) static int pl2303_vendor_read(struct usb_serial *serial, u16 value,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 220) unsigned char buf[1])
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 221) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 222) struct pl2303_serial_private *spriv = usb_get_serial_data(serial);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 223) struct device *dev = &serial->interface->dev;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 224) u8 request;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 225) int res;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 226)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 227) if (spriv->type == &pl2303_type_data[TYPE_HXN])
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 228) request = VENDOR_READ_NREQUEST;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 229) else
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 230) request = VENDOR_READ_REQUEST;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 231)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 232) res = usb_control_msg(serial->dev, usb_rcvctrlpipe(serial->dev, 0),
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 233) request, VENDOR_READ_REQUEST_TYPE,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 234) value, 0, buf, 1, 100);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 235) if (res != 1) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 236) dev_err(dev, "%s - failed to read [%04x]: %d\n", __func__,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 237) value, res);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 238) if (res >= 0)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 239) res = -EIO;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 240)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 241) return res;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 242) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 243)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 244) dev_dbg(dev, "%s - [%04x] = %02x\n", __func__, value, buf[0]);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 245)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 246) return 0;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 247) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 248)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 249) static int pl2303_vendor_write(struct usb_serial *serial, u16 value, u16 index)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 250) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 251) struct pl2303_serial_private *spriv = usb_get_serial_data(serial);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 252) struct device *dev = &serial->interface->dev;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 253) u8 request;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 254) int res;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 255)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 256) dev_dbg(dev, "%s - [%04x] = %02x\n", __func__, value, index);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 257)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 258) if (spriv->type == &pl2303_type_data[TYPE_HXN])
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 259) request = VENDOR_WRITE_NREQUEST;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 260) else
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 261) request = VENDOR_WRITE_REQUEST;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 262)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 263) res = usb_control_msg(serial->dev, usb_sndctrlpipe(serial->dev, 0),
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 264) request, VENDOR_WRITE_REQUEST_TYPE,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 265) value, index, NULL, 0, 100);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 266) if (res) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 267) dev_err(dev, "%s - failed to write [%04x]: %d\n", __func__,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 268) value, res);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 269) return res;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 270) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 271)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 272) return 0;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 273) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 274)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 275) static int pl2303_update_reg(struct usb_serial *serial, u8 reg, u8 mask, u8 val)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 276) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 277) struct pl2303_serial_private *spriv = usb_get_serial_data(serial);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 278) int ret = 0;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 279) u8 *buf;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 280)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 281) buf = kmalloc(1, GFP_KERNEL);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 282) if (!buf)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 283) return -ENOMEM;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 284)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 285) if (spriv->type == &pl2303_type_data[TYPE_HXN])
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 286) ret = pl2303_vendor_read(serial, reg, buf);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 287) else
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 288) ret = pl2303_vendor_read(serial, reg | 0x80, buf);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 289)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 290) if (ret)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 291) goto out_free;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 292)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 293) *buf &= ~mask;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 294) *buf |= val & mask;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 295)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 296) ret = pl2303_vendor_write(serial, reg, *buf);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 297) out_free:
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 298) kfree(buf);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 299)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 300) return ret;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 301) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 302)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 303) static int pl2303_probe(struct usb_serial *serial,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 304) const struct usb_device_id *id)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 305) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 306) usb_set_serial_data(serial, (void *)id->driver_info);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 307)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 308) return 0;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 309) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 310)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 311) /*
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 312) * Use interrupt endpoint from first interface if available.
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 313) *
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 314) * This is needed due to the looney way its endpoints are set up.
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 315) */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 316) static int pl2303_endpoint_hack(struct usb_serial *serial,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 317) struct usb_serial_endpoints *epds)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 318) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 319) struct usb_interface *interface = serial->interface;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 320) struct usb_device *dev = serial->dev;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 321) struct device *ddev = &interface->dev;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 322) struct usb_host_interface *iface_desc;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 323) struct usb_endpoint_descriptor *endpoint;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 324) unsigned int i;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 325)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 326) if (interface == dev->actconfig->interface[0])
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 327) return 0;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 328)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 329) /* check out the endpoints of the other interface */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 330) iface_desc = dev->actconfig->interface[0]->cur_altsetting;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 331)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 332) for (i = 0; i < iface_desc->desc.bNumEndpoints; ++i) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 333) endpoint = &iface_desc->endpoint[i].desc;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 334)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 335) if (!usb_endpoint_is_int_in(endpoint))
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 336) continue;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 337)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 338) dev_dbg(ddev, "found interrupt in on separate interface\n");
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 339) if (epds->num_interrupt_in < ARRAY_SIZE(epds->interrupt_in))
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 340) epds->interrupt_in[epds->num_interrupt_in++] = endpoint;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 341) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 342)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 343) return 0;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 344) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 345)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 346) static int pl2303_calc_num_ports(struct usb_serial *serial,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 347) struct usb_serial_endpoints *epds)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 348) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 349) unsigned long quirks = (unsigned long)usb_get_serial_data(serial);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 350) struct device *dev = &serial->interface->dev;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 351) int ret;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 352)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 353) if (quirks & PL2303_QUIRK_ENDPOINT_HACK) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 354) ret = pl2303_endpoint_hack(serial, epds);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 355) if (ret)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 356) return ret;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 357) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 358)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 359) if (epds->num_interrupt_in < 1) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 360) dev_err(dev, "required interrupt-in endpoint missing\n");
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 361) return -ENODEV;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 362) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 363)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 364) return 1;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 365) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 366)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 367) static int pl2303_startup(struct usb_serial *serial)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 368) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 369) struct pl2303_serial_private *spriv;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 370) enum pl2303_type type = TYPE_01;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 371) unsigned char *buf;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 372) int res;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 373)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 374) spriv = kzalloc(sizeof(*spriv), GFP_KERNEL);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 375) if (!spriv)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 376) return -ENOMEM;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 377)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 378) buf = kmalloc(1, GFP_KERNEL);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 379) if (!buf) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 380) kfree(spriv);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 381) return -ENOMEM;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 382) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 383)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 384) if (serial->dev->descriptor.bDeviceClass == 0x02)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 385) type = TYPE_01; /* type 0 */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 386) else if (serial->dev->descriptor.bMaxPacketSize0 == 0x40)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 387) type = TYPE_HX;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 388) else if (serial->dev->descriptor.bDeviceClass == 0x00)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 389) type = TYPE_01; /* type 1 */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 390) else if (serial->dev->descriptor.bDeviceClass == 0xFF)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 391) type = TYPE_01; /* type 1 */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 392) dev_dbg(&serial->interface->dev, "device type: %d\n", type);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 393)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 394) if (type == TYPE_HX) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 395) res = usb_control_msg(serial->dev,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 396) usb_rcvctrlpipe(serial->dev, 0),
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 397) VENDOR_READ_REQUEST, VENDOR_READ_REQUEST_TYPE,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 398) PL2303_READ_TYPE_HX_STATUS, 0, buf, 1, 100);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 399) if (res != 1)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 400) type = TYPE_HXN;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 401) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 402)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 403) spriv->type = &pl2303_type_data[type];
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 404) spriv->quirks = (unsigned long)usb_get_serial_data(serial);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 405) spriv->quirks |= spriv->type->quirks;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 406)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 407) usb_set_serial_data(serial, spriv);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 408)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 409) if (type != TYPE_HXN) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 410) pl2303_vendor_read(serial, 0x8484, buf);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 411) pl2303_vendor_write(serial, 0x0404, 0);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 412) pl2303_vendor_read(serial, 0x8484, buf);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 413) pl2303_vendor_read(serial, 0x8383, buf);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 414) pl2303_vendor_read(serial, 0x8484, buf);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 415) pl2303_vendor_write(serial, 0x0404, 1);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 416) pl2303_vendor_read(serial, 0x8484, buf);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 417) pl2303_vendor_read(serial, 0x8383, buf);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 418) pl2303_vendor_write(serial, 0, 1);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 419) pl2303_vendor_write(serial, 1, 0);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 420) if (spriv->quirks & PL2303_QUIRK_LEGACY)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 421) pl2303_vendor_write(serial, 2, 0x24);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 422) else
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 423) pl2303_vendor_write(serial, 2, 0x44);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 424) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 425)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 426) kfree(buf);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 427)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 428) return 0;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 429) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 430)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 431) static void pl2303_release(struct usb_serial *serial)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 432) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 433) struct pl2303_serial_private *spriv = usb_get_serial_data(serial);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 434)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 435) kfree(spriv);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 436) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 437)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 438) static int pl2303_port_probe(struct usb_serial_port *port)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 439) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 440) struct pl2303_private *priv;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 441)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 442) priv = kzalloc(sizeof(*priv), GFP_KERNEL);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 443) if (!priv)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 444) return -ENOMEM;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 445)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 446) spin_lock_init(&priv->lock);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 447)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 448) usb_set_serial_port_data(port, priv);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 449)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 450) port->port.drain_delay = 256;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 451)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 452) return 0;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 453) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 454)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 455) static int pl2303_port_remove(struct usb_serial_port *port)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 456) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 457) struct pl2303_private *priv = usb_get_serial_port_data(port);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 458)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 459) kfree(priv);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 460)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 461) return 0;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 462) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 463)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 464) static int pl2303_set_control_lines(struct usb_serial_port *port, u8 value)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 465) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 466) struct usb_device *dev = port->serial->dev;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 467) int retval;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 468)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 469) dev_dbg(&port->dev, "%s - %02x\n", __func__, value);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 470)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 471) retval = usb_control_msg(dev, usb_sndctrlpipe(dev, 0),
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 472) SET_CONTROL_REQUEST, SET_CONTROL_REQUEST_TYPE,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 473) value, 0, NULL, 0, 100);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 474) if (retval)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 475) dev_err(&port->dev, "%s - failed: %d\n", __func__, retval);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 476)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 477) return retval;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 478) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 479)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 480) /*
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 481) * Returns the nearest supported baud rate that can be set directly without
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 482) * using divisors.
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 483) */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 484) static speed_t pl2303_get_supported_baud_rate(speed_t baud)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 485) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 486) static const speed_t baud_sup[] = {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 487) 75, 150, 300, 600, 1200, 1800, 2400, 3600, 4800, 7200, 9600,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 488) 14400, 19200, 28800, 38400, 57600, 115200, 230400, 460800,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 489) 614400, 921600, 1228800, 2457600, 3000000, 6000000
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 490) };
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 491)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 492) unsigned i;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 493)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 494) for (i = 0; i < ARRAY_SIZE(baud_sup); ++i) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 495) if (baud_sup[i] > baud)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 496) break;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 497) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 498)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 499) if (i == ARRAY_SIZE(baud_sup))
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 500) baud = baud_sup[i - 1];
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 501) else if (i > 0 && (baud_sup[i] - baud) > (baud - baud_sup[i - 1]))
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 502) baud = baud_sup[i - 1];
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 503) else
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 504) baud = baud_sup[i];
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 505)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 506) return baud;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 507) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 508)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 509) /*
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 510) * NOTE: If unsupported baud rates are set directly, the PL2303 seems to
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 511) * use 9600 baud.
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 512) */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 513) static speed_t pl2303_encode_baud_rate_direct(unsigned char buf[4],
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 514) speed_t baud)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 515) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 516) put_unaligned_le32(baud, buf);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 517)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 518) return baud;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 519) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 520)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 521) static speed_t pl2303_encode_baud_rate_divisor(unsigned char buf[4],
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 522) speed_t baud)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 523) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 524) unsigned int baseline, mantissa, exponent;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 525)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 526) /*
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 527) * Apparently the formula is:
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 528) * baudrate = 12M * 32 / (mantissa * 4^exponent)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 529) * where
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 530) * mantissa = buf[8:0]
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 531) * exponent = buf[11:9]
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 532) */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 533) baseline = 12000000 * 32;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 534) mantissa = baseline / baud;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 535) if (mantissa == 0)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 536) mantissa = 1; /* Avoid dividing by zero if baud > 32*12M. */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 537) exponent = 0;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 538) while (mantissa >= 512) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 539) if (exponent < 7) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 540) mantissa >>= 2; /* divide by 4 */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 541) exponent++;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 542) } else {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 543) /* Exponent is maxed. Trim mantissa and leave. */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 544) mantissa = 511;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 545) break;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 546) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 547) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 548)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 549) buf[3] = 0x80;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 550) buf[2] = 0;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 551) buf[1] = exponent << 1 | mantissa >> 8;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 552) buf[0] = mantissa & 0xff;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 553)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 554) /* Calculate and return the exact baud rate. */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 555) baud = (baseline / mantissa) >> (exponent << 1);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 556)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 557) return baud;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 558) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 559)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 560) static void pl2303_encode_baud_rate(struct tty_struct *tty,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 561) struct usb_serial_port *port,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 562) u8 buf[4])
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 563) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 564) struct usb_serial *serial = port->serial;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 565) struct pl2303_serial_private *spriv = usb_get_serial_data(serial);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 566) speed_t baud_sup;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 567) speed_t baud;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 568)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 569) baud = tty_get_baud_rate(tty);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 570) dev_dbg(&port->dev, "baud requested = %u\n", baud);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 571) if (!baud)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 572) return;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 573)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 574) if (spriv->type->max_baud_rate)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 575) baud = min_t(speed_t, baud, spriv->type->max_baud_rate);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 576) /*
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 577) * Use direct method for supported baud rates, otherwise use divisors.
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 578) * Newer chip types do not support divisor encoding.
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 579) */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 580) if (spriv->type->no_divisors)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 581) baud_sup = baud;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 582) else
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 583) baud_sup = pl2303_get_supported_baud_rate(baud);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 584)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 585) if (baud == baud_sup)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 586) baud = pl2303_encode_baud_rate_direct(buf, baud);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 587) else
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 588) baud = pl2303_encode_baud_rate_divisor(buf, baud);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 589)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 590) /* Save resulting baud rate */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 591) tty_encode_baud_rate(tty, baud, baud);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 592) dev_dbg(&port->dev, "baud set = %u\n", baud);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 593) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 594)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 595) static int pl2303_get_line_request(struct usb_serial_port *port,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 596) unsigned char buf[7])
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 597) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 598) struct usb_device *udev = port->serial->dev;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 599) int ret;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 600)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 601) ret = usb_control_msg(udev, usb_rcvctrlpipe(udev, 0),
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 602) GET_LINE_REQUEST, GET_LINE_REQUEST_TYPE,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 603) 0, 0, buf, 7, 100);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 604) if (ret != 7) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 605) dev_err(&port->dev, "%s - failed: %d\n", __func__, ret);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 606)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 607) if (ret >= 0)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 608) ret = -EIO;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 609)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 610) return ret;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 611) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 612)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 613) dev_dbg(&port->dev, "%s - %7ph\n", __func__, buf);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 614)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 615) return 0;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 616) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 617)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 618) static int pl2303_set_line_request(struct usb_serial_port *port,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 619) unsigned char buf[7])
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 620) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 621) struct usb_device *udev = port->serial->dev;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 622) int ret;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 623)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 624) ret = usb_control_msg(udev, usb_sndctrlpipe(udev, 0),
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 625) SET_LINE_REQUEST, SET_LINE_REQUEST_TYPE,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 626) 0, 0, buf, 7, 100);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 627) if (ret < 0) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 628) dev_err(&port->dev, "%s - failed: %d\n", __func__, ret);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 629) return ret;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 630) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 631)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 632) dev_dbg(&port->dev, "%s - %7ph\n", __func__, buf);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 633)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 634) return 0;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 635) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 636)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 637) static bool pl2303_termios_change(const struct ktermios *a, const struct ktermios *b)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 638) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 639) bool ixon_change;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 640)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 641) ixon_change = ((a->c_iflag ^ b->c_iflag) & (IXON | IXANY)) ||
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 642) a->c_cc[VSTART] != b->c_cc[VSTART] ||
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 643) a->c_cc[VSTOP] != b->c_cc[VSTOP];
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 644)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 645) return tty_termios_hw_change(a, b) || ixon_change;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 646) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 647)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 648) static bool pl2303_enable_xonxoff(struct tty_struct *tty, const struct pl2303_type_data *type)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 649) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 650) if (!I_IXON(tty) || I_IXANY(tty))
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 651) return false;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 652)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 653) if (START_CHAR(tty) != 0x11 || STOP_CHAR(tty) != 0x13)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 654) return false;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 655)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 656) if (type->no_autoxonxoff)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 657) return false;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 658)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 659) return true;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 660) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 661)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 662) static void pl2303_set_termios(struct tty_struct *tty,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 663) struct usb_serial_port *port, struct ktermios *old_termios)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 664) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 665) struct usb_serial *serial = port->serial;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 666) struct pl2303_serial_private *spriv = usb_get_serial_data(serial);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 667) struct pl2303_private *priv = usb_get_serial_port_data(port);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 668) unsigned long flags;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 669) unsigned char *buf;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 670) int ret;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 671) u8 control;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 672)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 673) if (old_termios && !pl2303_termios_change(&tty->termios, old_termios))
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 674) return;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 675)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 676) buf = kzalloc(7, GFP_KERNEL);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 677) if (!buf) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 678) /* Report back no change occurred */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 679) if (old_termios)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 680) tty->termios = *old_termios;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 681) return;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 682) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 683)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 684) pl2303_get_line_request(port, buf);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 685)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 686) switch (C_CSIZE(tty)) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 687) case CS5:
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 688) buf[6] = 5;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 689) break;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 690) case CS6:
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 691) buf[6] = 6;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 692) break;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 693) case CS7:
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 694) buf[6] = 7;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 695) break;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 696) default:
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 697) case CS8:
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 698) buf[6] = 8;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 699) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 700) dev_dbg(&port->dev, "data bits = %d\n", buf[6]);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 701)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 702) /* For reference buf[0]:buf[3] baud rate value */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 703) pl2303_encode_baud_rate(tty, port, &buf[0]);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 704)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 705) /* For reference buf[4]=0 is 1 stop bits */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 706) /* For reference buf[4]=1 is 1.5 stop bits */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 707) /* For reference buf[4]=2 is 2 stop bits */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 708) if (C_CSTOPB(tty)) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 709) /*
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 710) * NOTE: Comply with "real" UARTs / RS232:
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 711) * use 1.5 instead of 2 stop bits with 5 data bits
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 712) */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 713) if (C_CSIZE(tty) == CS5) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 714) buf[4] = 1;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 715) dev_dbg(&port->dev, "stop bits = 1.5\n");
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 716) } else {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 717) buf[4] = 2;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 718) dev_dbg(&port->dev, "stop bits = 2\n");
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 719) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 720) } else {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 721) buf[4] = 0;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 722) dev_dbg(&port->dev, "stop bits = 1\n");
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 723) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 724)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 725) if (C_PARENB(tty)) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 726) /* For reference buf[5]=0 is none parity */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 727) /* For reference buf[5]=1 is odd parity */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 728) /* For reference buf[5]=2 is even parity */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 729) /* For reference buf[5]=3 is mark parity */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 730) /* For reference buf[5]=4 is space parity */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 731) if (C_PARODD(tty)) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 732) if (C_CMSPAR(tty)) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 733) buf[5] = 3;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 734) dev_dbg(&port->dev, "parity = mark\n");
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 735) } else {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 736) buf[5] = 1;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 737) dev_dbg(&port->dev, "parity = odd\n");
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 738) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 739) } else {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 740) if (C_CMSPAR(tty)) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 741) buf[5] = 4;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 742) dev_dbg(&port->dev, "parity = space\n");
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 743) } else {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 744) buf[5] = 2;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 745) dev_dbg(&port->dev, "parity = even\n");
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 746) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 747) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 748) } else {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 749) buf[5] = 0;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 750) dev_dbg(&port->dev, "parity = none\n");
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 751) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 752)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 753) /*
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 754) * Some PL2303 are known to lose bytes if you change serial settings
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 755) * even to the same values as before. Thus we actually need to filter
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 756) * in this specific case.
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 757) *
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 758) * Note that the tty_termios_hw_change check above is not sufficient
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 759) * as a previously requested baud rate may differ from the one
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 760) * actually used (and stored in old_termios).
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 761) *
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 762) * NOTE: No additional locking needed for line_settings as it is
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 763) * only used in set_termios, which is serialised against itself.
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 764) */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 765) if (!old_termios || memcmp(buf, priv->line_settings, 7)) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 766) ret = pl2303_set_line_request(port, buf);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 767) if (!ret)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 768) memcpy(priv->line_settings, buf, 7);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 769) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 770)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 771) /* change control lines if we are switching to or from B0 */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 772) spin_lock_irqsave(&priv->lock, flags);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 773) control = priv->line_control;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 774) if (C_BAUD(tty) == B0)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 775) priv->line_control &= ~(CONTROL_DTR | CONTROL_RTS);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 776) else if (old_termios && (old_termios->c_cflag & CBAUD) == B0)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 777) priv->line_control |= (CONTROL_DTR | CONTROL_RTS);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 778) if (control != priv->line_control) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 779) control = priv->line_control;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 780) spin_unlock_irqrestore(&priv->lock, flags);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 781) pl2303_set_control_lines(port, control);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 782) } else {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 783) spin_unlock_irqrestore(&priv->lock, flags);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 784) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 785)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 786) if (C_CRTSCTS(tty)) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 787) if (spriv->quirks & PL2303_QUIRK_LEGACY) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 788) pl2303_update_reg(serial, 0, PL2303_FLOWCTRL_MASK, 0x40);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 789) } else if (spriv->type == &pl2303_type_data[TYPE_HXN]) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 790) pl2303_update_reg(serial, PL2303_HXN_FLOWCTRL_REG,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 791) PL2303_HXN_FLOWCTRL_MASK,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 792) PL2303_HXN_FLOWCTRL_RTS_CTS);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 793) } else {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 794) pl2303_update_reg(serial, 0, PL2303_FLOWCTRL_MASK, 0x60);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 795) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 796) } else if (pl2303_enable_xonxoff(tty, spriv->type)) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 797) if (spriv->type == &pl2303_type_data[TYPE_HXN]) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 798) pl2303_update_reg(serial, PL2303_HXN_FLOWCTRL_REG,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 799) PL2303_HXN_FLOWCTRL_MASK,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 800) PL2303_HXN_FLOWCTRL_XON_XOFF);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 801) } else {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 802) pl2303_update_reg(serial, 0, PL2303_FLOWCTRL_MASK, 0xc0);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 803) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 804) } else {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 805) if (spriv->type == &pl2303_type_data[TYPE_HXN]) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 806) pl2303_update_reg(serial, PL2303_HXN_FLOWCTRL_REG,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 807) PL2303_HXN_FLOWCTRL_MASK,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 808) PL2303_HXN_FLOWCTRL_NONE);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 809) } else {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 810) pl2303_update_reg(serial, 0, PL2303_FLOWCTRL_MASK, 0);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 811) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 812) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 813)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 814) kfree(buf);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 815) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 816)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 817) static void pl2303_dtr_rts(struct usb_serial_port *port, int on)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 818) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 819) struct pl2303_private *priv = usb_get_serial_port_data(port);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 820) unsigned long flags;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 821) u8 control;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 822)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 823) spin_lock_irqsave(&priv->lock, flags);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 824) if (on)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 825) priv->line_control |= (CONTROL_DTR | CONTROL_RTS);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 826) else
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 827) priv->line_control &= ~(CONTROL_DTR | CONTROL_RTS);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 828) control = priv->line_control;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 829) spin_unlock_irqrestore(&priv->lock, flags);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 830)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 831) pl2303_set_control_lines(port, control);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 832) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 833)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 834) static void pl2303_close(struct usb_serial_port *port)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 835) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 836) usb_serial_generic_close(port);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 837) usb_kill_urb(port->interrupt_in_urb);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 838) pl2303_set_break(port, false);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 839) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 840)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 841) static int pl2303_open(struct tty_struct *tty, struct usb_serial_port *port)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 842) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 843) struct usb_serial *serial = port->serial;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 844) struct pl2303_serial_private *spriv = usb_get_serial_data(serial);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 845) int result;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 846)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 847) if (spriv->quirks & PL2303_QUIRK_LEGACY) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 848) usb_clear_halt(serial->dev, port->write_urb->pipe);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 849) usb_clear_halt(serial->dev, port->read_urb->pipe);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 850) } else {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 851) /* reset upstream data pipes */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 852) if (spriv->type == &pl2303_type_data[TYPE_HXN]) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 853) pl2303_vendor_write(serial, PL2303_HXN_RESET_REG,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 854) PL2303_HXN_RESET_UPSTREAM_PIPE |
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 855) PL2303_HXN_RESET_DOWNSTREAM_PIPE);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 856) } else {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 857) pl2303_vendor_write(serial, 8, 0);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 858) pl2303_vendor_write(serial, 9, 0);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 859) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 860) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 861)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 862) /* Setup termios */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 863) if (tty)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 864) pl2303_set_termios(tty, port, NULL);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 865)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 866) result = usb_submit_urb(port->interrupt_in_urb, GFP_KERNEL);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 867) if (result) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 868) dev_err(&port->dev, "failed to submit interrupt urb: %d\n",
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 869) result);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 870) return result;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 871) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 872)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 873) result = usb_serial_generic_open(tty, port);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 874) if (result) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 875) usb_kill_urb(port->interrupt_in_urb);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 876) return result;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 877) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 878)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 879) return 0;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 880) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 881)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 882) static int pl2303_tiocmset(struct tty_struct *tty,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 883) unsigned int set, unsigned int clear)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 884) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 885) struct usb_serial_port *port = tty->driver_data;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 886) struct pl2303_private *priv = usb_get_serial_port_data(port);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 887) unsigned long flags;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 888) u8 control;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 889) int ret;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 890)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 891) spin_lock_irqsave(&priv->lock, flags);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 892) if (set & TIOCM_RTS)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 893) priv->line_control |= CONTROL_RTS;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 894) if (set & TIOCM_DTR)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 895) priv->line_control |= CONTROL_DTR;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 896) if (clear & TIOCM_RTS)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 897) priv->line_control &= ~CONTROL_RTS;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 898) if (clear & TIOCM_DTR)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 899) priv->line_control &= ~CONTROL_DTR;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 900) control = priv->line_control;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 901) spin_unlock_irqrestore(&priv->lock, flags);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 902)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 903) ret = pl2303_set_control_lines(port, control);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 904) if (ret)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 905) return usb_translate_errors(ret);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 906)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 907) return 0;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 908) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 909)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 910) static int pl2303_tiocmget(struct tty_struct *tty)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 911) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 912) struct usb_serial_port *port = tty->driver_data;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 913) struct pl2303_private *priv = usb_get_serial_port_data(port);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 914) unsigned long flags;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 915) unsigned int mcr;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 916) unsigned int status;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 917) unsigned int result;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 918)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 919) spin_lock_irqsave(&priv->lock, flags);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 920) mcr = priv->line_control;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 921) status = priv->line_status;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 922) spin_unlock_irqrestore(&priv->lock, flags);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 923)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 924) result = ((mcr & CONTROL_DTR) ? TIOCM_DTR : 0)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 925) | ((mcr & CONTROL_RTS) ? TIOCM_RTS : 0)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 926) | ((status & UART_CTS) ? TIOCM_CTS : 0)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 927) | ((status & UART_DSR) ? TIOCM_DSR : 0)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 928) | ((status & UART_RING) ? TIOCM_RI : 0)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 929) | ((status & UART_DCD) ? TIOCM_CD : 0);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 930)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 931) dev_dbg(&port->dev, "%s - result = %x\n", __func__, result);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 932)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 933) return result;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 934) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 935)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 936) static int pl2303_carrier_raised(struct usb_serial_port *port)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 937) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 938) struct pl2303_private *priv = usb_get_serial_port_data(port);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 939)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 940) if (priv->line_status & UART_DCD)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 941) return 1;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 942)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 943) return 0;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 944) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 945)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 946) static int pl2303_get_serial(struct tty_struct *tty,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 947) struct serial_struct *ss)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 948) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 949) struct usb_serial_port *port = tty->driver_data;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 950)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 951) ss->type = PORT_16654;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 952) ss->line = port->minor;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 953) ss->port = port->port_number;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 954) ss->baud_base = 460800;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 955) return 0;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 956) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 957)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 958) static void pl2303_set_break(struct usb_serial_port *port, bool enable)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 959) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 960) struct usb_serial *serial = port->serial;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 961) u16 state;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 962) int result;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 963)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 964) if (enable)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 965) state = BREAK_ON;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 966) else
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 967) state = BREAK_OFF;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 968)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 969) dev_dbg(&port->dev, "%s - turning break %s\n", __func__,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 970) state == BREAK_OFF ? "off" : "on");
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 971)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 972) result = usb_control_msg(serial->dev, usb_sndctrlpipe(serial->dev, 0),
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 973) BREAK_REQUEST, BREAK_REQUEST_TYPE, state,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 974) 0, NULL, 0, 100);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 975) if (result)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 976) dev_err(&port->dev, "error sending break = %d\n", result);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 977) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 978)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 979) static void pl2303_break_ctl(struct tty_struct *tty, int state)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 980) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 981) struct usb_serial_port *port = tty->driver_data;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 982)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 983) pl2303_set_break(port, state);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 984) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 985)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 986) static void pl2303_update_line_status(struct usb_serial_port *port,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 987) unsigned char *data,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 988) unsigned int actual_length)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 989) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 990) struct usb_serial *serial = port->serial;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 991) struct pl2303_serial_private *spriv = usb_get_serial_data(serial);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 992) struct pl2303_private *priv = usb_get_serial_port_data(port);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 993) struct tty_struct *tty;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 994) unsigned long flags;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 995) unsigned int status_idx = UART_STATE_INDEX;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 996) u8 status;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 997) u8 delta;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 998)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 999) if (spriv->quirks & PL2303_QUIRK_UART_STATE_IDX0)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1000) status_idx = 0;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1001)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1002) if (actual_length < status_idx + 1)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1003) return;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1004)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1005) status = data[status_idx];
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1006)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1007) /* Save off the uart status for others to look at */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1008) spin_lock_irqsave(&priv->lock, flags);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1009) delta = priv->line_status ^ status;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1010) priv->line_status = status;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1011) spin_unlock_irqrestore(&priv->lock, flags);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1012)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1013) if (status & UART_BREAK_ERROR)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1014) usb_serial_handle_break(port);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1015)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1016) if (delta & UART_STATE_MSR_MASK) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1017) if (delta & UART_CTS)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1018) port->icount.cts++;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1019) if (delta & UART_DSR)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1020) port->icount.dsr++;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1021) if (delta & UART_RING)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1022) port->icount.rng++;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1023) if (delta & UART_DCD) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1024) port->icount.dcd++;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1025) tty = tty_port_tty_get(&port->port);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1026) if (tty) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1027) usb_serial_handle_dcd_change(port, tty,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1028) status & UART_DCD);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1029) tty_kref_put(tty);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1030) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1031) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1032)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1033) wake_up_interruptible(&port->port.delta_msr_wait);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1034) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1035) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1036)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1037) static void pl2303_read_int_callback(struct urb *urb)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1038) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1039) struct usb_serial_port *port = urb->context;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1040) unsigned char *data = urb->transfer_buffer;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1041) unsigned int actual_length = urb->actual_length;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1042) int status = urb->status;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1043) int retval;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1044)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1045) switch (status) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1046) case 0:
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1047) /* success */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1048) break;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1049) case -ECONNRESET:
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1050) case -ENOENT:
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1051) case -ESHUTDOWN:
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1052) /* this urb is terminated, clean up */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1053) dev_dbg(&port->dev, "%s - urb shutting down with status: %d\n",
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1054) __func__, status);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1055) return;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1056) default:
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1057) dev_dbg(&port->dev, "%s - nonzero urb status received: %d\n",
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1058) __func__, status);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1059) goto exit;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1060) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1061)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1062) usb_serial_debug_data(&port->dev, __func__,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1063) urb->actual_length, urb->transfer_buffer);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1064)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1065) pl2303_update_line_status(port, data, actual_length);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1066)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1067) exit:
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1068) retval = usb_submit_urb(urb, GFP_ATOMIC);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1069) if (retval) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1070) dev_err(&port->dev,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1071) "%s - usb_submit_urb failed with result %d\n",
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1072) __func__, retval);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1073) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1074) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1075)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1076) static void pl2303_process_read_urb(struct urb *urb)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1077) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1078) struct usb_serial_port *port = urb->context;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1079) struct pl2303_private *priv = usb_get_serial_port_data(port);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1080) unsigned char *data = urb->transfer_buffer;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1081) char tty_flag = TTY_NORMAL;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1082) unsigned long flags;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1083) u8 line_status;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1084) int i;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1085)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1086) /* update line status */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1087) spin_lock_irqsave(&priv->lock, flags);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1088) line_status = priv->line_status;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1089) priv->line_status &= ~UART_STATE_TRANSIENT_MASK;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1090) spin_unlock_irqrestore(&priv->lock, flags);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1091)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1092) if (!urb->actual_length)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1093) return;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1094)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1095) /*
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1096) * Break takes precedence over parity, which takes precedence over
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1097) * framing errors.
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1098) */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1099) if (line_status & UART_BREAK_ERROR)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1100) tty_flag = TTY_BREAK;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1101) else if (line_status & UART_PARITY_ERROR)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1102) tty_flag = TTY_PARITY;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1103) else if (line_status & UART_FRAME_ERROR)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1104) tty_flag = TTY_FRAME;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1105)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1106) if (tty_flag != TTY_NORMAL)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1107) dev_dbg(&port->dev, "%s - tty_flag = %d\n", __func__,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1108) tty_flag);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1109) /* overrun is special, not associated with a char */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1110) if (line_status & UART_OVERRUN_ERROR)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1111) tty_insert_flip_char(&port->port, 0, TTY_OVERRUN);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1112)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1113) if (port->sysrq) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1114) for (i = 0; i < urb->actual_length; ++i)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1115) if (!usb_serial_handle_sysrq_char(port, data[i]))
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1116) tty_insert_flip_char(&port->port, data[i],
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1117) tty_flag);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1118) } else {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1119) tty_insert_flip_string_fixed_flag(&port->port, data, tty_flag,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1120) urb->actual_length);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1121) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1122)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1123) tty_flip_buffer_push(&port->port);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1124) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1125)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1126) static struct usb_serial_driver pl2303_device = {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1127) .driver = {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1128) .owner = THIS_MODULE,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1129) .name = "pl2303",
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1130) },
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1131) .id_table = id_table,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1132) .num_bulk_in = 1,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1133) .num_bulk_out = 1,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1134) .num_interrupt_in = 0, /* see pl2303_calc_num_ports */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1135) .bulk_in_size = 256,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1136) .bulk_out_size = 256,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1137) .open = pl2303_open,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1138) .close = pl2303_close,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1139) .dtr_rts = pl2303_dtr_rts,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1140) .carrier_raised = pl2303_carrier_raised,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1141) .get_serial = pl2303_get_serial,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1142) .break_ctl = pl2303_break_ctl,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1143) .set_termios = pl2303_set_termios,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1144) .tiocmget = pl2303_tiocmget,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1145) .tiocmset = pl2303_tiocmset,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1146) .tiocmiwait = usb_serial_generic_tiocmiwait,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1147) .process_read_urb = pl2303_process_read_urb,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1148) .read_int_callback = pl2303_read_int_callback,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1149) .probe = pl2303_probe,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1150) .calc_num_ports = pl2303_calc_num_ports,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1151) .attach = pl2303_startup,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1152) .release = pl2303_release,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1153) .port_probe = pl2303_port_probe,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1154) .port_remove = pl2303_port_remove,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1155) };
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1156)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1157) static struct usb_serial_driver * const serial_drivers[] = {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1158) &pl2303_device, NULL
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1159) };
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1160)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1161) module_usb_serial_driver(serial_drivers, id_table);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1162)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1163) MODULE_DESCRIPTION("Prolific PL2303 USB to serial adaptor driver");
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1164) MODULE_LICENSE("GPL v2");
Orange Pi5 kernel
Deprecated Linux kernel 5.10.110 for OrangePi 5/5B/5+ boards
3 Commits
0 Branches
0 Tags