^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) * USB ConnectTech WhiteHEAT driver
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 4) *
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 5) * Copyright (C) 2002
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 6) * Connect Tech Inc.
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 7) *
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 8) * Copyright (C) 1999 - 2001
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 9) * Greg Kroah-Hartman (greg@kroah.com)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 10) *
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 11) * See Documentation/usb/usb-serial.rst for more information on using this
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 12) * driver
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 13) */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 14)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 15) #include <linux/kernel.h>
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 16) #include <linux/errno.h>
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 17) #include <linux/slab.h>
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 18) #include <linux/tty.h>
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 19) #include <linux/tty_driver.h>
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 20) #include <linux/tty_flip.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/spinlock.h>
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 23) #include <linux/mutex.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 <asm/termbits.h>
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 26) #include <linux/usb.h>
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 27) #include <linux/serial_reg.h>
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 28) #include <linux/serial.h>
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 29) #include <linux/usb/serial.h>
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 30) #include <linux/usb/ezusb.h>
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 31) #include "whiteheat.h" /* WhiteHEAT specific commands */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 32)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 33) #ifndef CMSPAR
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 34) #define CMSPAR 0
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 35) #endif
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 36)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 37) /*
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 38) * Version Information
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 39) */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 40) #define DRIVER_AUTHOR "Greg Kroah-Hartman <greg@kroah.com>, Stuart MacDonald <stuartm@connecttech.com>"
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 41) #define DRIVER_DESC "USB ConnectTech WhiteHEAT driver"
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 42)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 43) #define CONNECT_TECH_VENDOR_ID 0x0710
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 44) #define CONNECT_TECH_FAKE_WHITE_HEAT_ID 0x0001
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 45) #define CONNECT_TECH_WHITE_HEAT_ID 0x8001
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 46)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 47) /*
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 48) ID tables for whiteheat are unusual, because we want to different
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 49) things for different versions of the device. Eventually, this
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 50) will be doable from a single table. But, for now, we define two
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 51) separate ID tables, and then a third table that combines them
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 52) just for the purpose of exporting the autoloading information.
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 53) */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 54) static const struct usb_device_id id_table_std[] = {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 55) { USB_DEVICE(CONNECT_TECH_VENDOR_ID, CONNECT_TECH_WHITE_HEAT_ID) },
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 56) { } /* Terminating entry */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 57) };
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 58)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 59) static const struct usb_device_id id_table_prerenumeration[] = {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 60) { USB_DEVICE(CONNECT_TECH_VENDOR_ID, CONNECT_TECH_FAKE_WHITE_HEAT_ID) },
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 61) { } /* Terminating entry */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 62) };
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 63)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 64) static const struct usb_device_id id_table_combined[] = {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 65) { USB_DEVICE(CONNECT_TECH_VENDOR_ID, CONNECT_TECH_WHITE_HEAT_ID) },
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 66) { USB_DEVICE(CONNECT_TECH_VENDOR_ID, CONNECT_TECH_FAKE_WHITE_HEAT_ID) },
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 67) { } /* Terminating entry */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 68) };
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 69)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 70) MODULE_DEVICE_TABLE(usb, id_table_combined);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 71)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 72)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 73) /* function prototypes for the Connect Tech WhiteHEAT prerenumeration device */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 74) static int whiteheat_firmware_download(struct usb_serial *serial,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 75) const struct usb_device_id *id);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 76) static int whiteheat_firmware_attach(struct usb_serial *serial);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 77)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 78) /* function prototypes for the Connect Tech WhiteHEAT serial converter */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 79) static int whiteheat_attach(struct usb_serial *serial);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 80) static void whiteheat_release(struct usb_serial *serial);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 81) static int whiteheat_port_probe(struct usb_serial_port *port);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 82) static int whiteheat_port_remove(struct usb_serial_port *port);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 83) static int whiteheat_open(struct tty_struct *tty,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 84) struct usb_serial_port *port);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 85) static void whiteheat_close(struct usb_serial_port *port);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 86) static int whiteheat_get_serial(struct tty_struct *tty,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 87) struct serial_struct *ss);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 88) static void whiteheat_set_termios(struct tty_struct *tty,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 89) struct usb_serial_port *port, struct ktermios *old);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 90) static int whiteheat_tiocmget(struct tty_struct *tty);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 91) static int whiteheat_tiocmset(struct tty_struct *tty,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 92) unsigned int set, unsigned int clear);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 93) static void whiteheat_break_ctl(struct tty_struct *tty, int break_state);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 94)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 95) static struct usb_serial_driver whiteheat_fake_device = {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 96) .driver = {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 97) .owner = THIS_MODULE,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 98) .name = "whiteheatnofirm",
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 99) },
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 100) .description = "Connect Tech - WhiteHEAT - (prerenumeration)",
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 101) .id_table = id_table_prerenumeration,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 102) .num_ports = 1,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 103) .probe = whiteheat_firmware_download,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 104) .attach = whiteheat_firmware_attach,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 105) };
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 106)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 107) static struct usb_serial_driver whiteheat_device = {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 108) .driver = {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 109) .owner = THIS_MODULE,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 110) .name = "whiteheat",
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 111) },
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 112) .description = "Connect Tech - WhiteHEAT",
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 113) .id_table = id_table_std,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 114) .num_ports = 4,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 115) .num_bulk_in = 5,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 116) .num_bulk_out = 5,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 117) .attach = whiteheat_attach,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 118) .release = whiteheat_release,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 119) .port_probe = whiteheat_port_probe,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 120) .port_remove = whiteheat_port_remove,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 121) .open = whiteheat_open,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 122) .close = whiteheat_close,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 123) .get_serial = whiteheat_get_serial,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 124) .set_termios = whiteheat_set_termios,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 125) .break_ctl = whiteheat_break_ctl,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 126) .tiocmget = whiteheat_tiocmget,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 127) .tiocmset = whiteheat_tiocmset,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 128) .throttle = usb_serial_generic_throttle,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 129) .unthrottle = usb_serial_generic_unthrottle,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 130) };
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 131)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 132) static struct usb_serial_driver * const serial_drivers[] = {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 133) &whiteheat_fake_device, &whiteheat_device, NULL
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 134) };
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 135)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 136) struct whiteheat_command_private {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 137) struct mutex mutex;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 138) __u8 port_running;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 139) __u8 command_finished;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 140) wait_queue_head_t wait_command; /* for handling sleeping whilst
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 141) waiting for a command to
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 142) finish */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 143) __u8 result_buffer[64];
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 144) };
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 145)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 146) struct whiteheat_private {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 147) __u8 mcr; /* FIXME: no locking on mcr */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 148) };
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 149)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 150)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 151) /* local function prototypes */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 152) static int start_command_port(struct usb_serial *serial);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 153) static void stop_command_port(struct usb_serial *serial);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 154) static void command_port_write_callback(struct urb *urb);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 155) static void command_port_read_callback(struct urb *urb);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 156)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 157) static int firm_send_command(struct usb_serial_port *port, __u8 command,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 158) __u8 *data, __u8 datasize);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 159) static int firm_open(struct usb_serial_port *port);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 160) static int firm_close(struct usb_serial_port *port);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 161) static void firm_setup_port(struct tty_struct *tty);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 162) static int firm_set_rts(struct usb_serial_port *port, __u8 onoff);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 163) static int firm_set_dtr(struct usb_serial_port *port, __u8 onoff);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 164) static int firm_set_break(struct usb_serial_port *port, __u8 onoff);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 165) static int firm_purge(struct usb_serial_port *port, __u8 rxtx);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 166) static int firm_get_dtr_rts(struct usb_serial_port *port);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 167) static int firm_report_tx_done(struct usb_serial_port *port);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 168)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 169)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 170) #define COMMAND_PORT 4
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 171) #define COMMAND_TIMEOUT (2*HZ) /* 2 second timeout for a command */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 172) #define COMMAND_TIMEOUT_MS 2000
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 173) #define CLOSING_DELAY (30 * HZ)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 174)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 175)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 176) /*****************************************************************************
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 177) * Connect Tech's White Heat prerenumeration driver functions
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 178) *****************************************************************************/
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 179)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 180) /* steps to download the firmware to the WhiteHEAT device:
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 181) - hold the reset (by writing to the reset bit of the CPUCS register)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 182) - download the VEND_AX.HEX file to the chip using VENDOR_REQUEST-ANCHOR_LOAD
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 183) - release the reset (by writing to the CPUCS register)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 184) - download the WH.HEX file for all addresses greater than 0x1b3f using
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 185) VENDOR_REQUEST-ANCHOR_EXTERNAL_RAM_LOAD
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 186) - hold the reset
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 187) - download the WH.HEX file for all addresses less than 0x1b40 using
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 188) VENDOR_REQUEST_ANCHOR_LOAD
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 189) - release the reset
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 190) - device renumerated itself and comes up as new device id with all
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 191) firmware download completed.
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 192) */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 193) static int whiteheat_firmware_download(struct usb_serial *serial,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 194) const struct usb_device_id *id)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 195) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 196) int response;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 197)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 198) response = ezusb_fx1_ihex_firmware_download(serial->dev, "whiteheat_loader.fw");
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 199) if (response >= 0) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 200) response = ezusb_fx1_ihex_firmware_download(serial->dev, "whiteheat.fw");
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 201) if (response >= 0)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 202) return 0;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 203) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 204) return -ENOENT;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 205) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 206)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 207)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 208) static int whiteheat_firmware_attach(struct usb_serial *serial)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 209) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 210) /* We want this device to fail to have a driver assigned to it */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 211) return 1;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 212) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 213)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 214)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 215) /*****************************************************************************
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 216) * Connect Tech's White Heat serial driver functions
^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 whiteheat_attach(struct usb_serial *serial)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 220) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 221) struct usb_serial_port *command_port;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 222) struct whiteheat_command_private *command_info;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 223) struct whiteheat_hw_info *hw_info;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 224) int pipe;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 225) int ret;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 226) int alen;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 227) __u8 *command;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 228) __u8 *result;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 229)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 230) command_port = serial->port[COMMAND_PORT];
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 231)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 232) pipe = usb_sndbulkpipe(serial->dev,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 233) command_port->bulk_out_endpointAddress);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 234) command = kmalloc(2, GFP_KERNEL);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 235) if (!command)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 236) goto no_command_buffer;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 237) command[0] = WHITEHEAT_GET_HW_INFO;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 238) command[1] = 0;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 239)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 240) result = kmalloc(sizeof(*hw_info) + 1, GFP_KERNEL);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 241) if (!result)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 242) goto no_result_buffer;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 243) /*
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 244) * When the module is reloaded the firmware is still there and
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 245) * the endpoints are still in the usb core unchanged. This is the
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 246) * unlinking bug in disguise. Same for the call below.
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 247) */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 248) usb_clear_halt(serial->dev, pipe);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 249) ret = usb_bulk_msg(serial->dev, pipe, command, 2,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 250) &alen, COMMAND_TIMEOUT_MS);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 251) if (ret) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 252) dev_err(&serial->dev->dev, "%s: Couldn't send command [%d]\n",
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 253) serial->type->description, ret);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 254) goto no_firmware;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 255) } else if (alen != 2) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 256) dev_err(&serial->dev->dev, "%s: Send command incomplete [%d]\n",
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 257) serial->type->description, alen);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 258) goto no_firmware;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 259) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 260)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 261) pipe = usb_rcvbulkpipe(serial->dev,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 262) command_port->bulk_in_endpointAddress);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 263) /* See the comment on the usb_clear_halt() above */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 264) usb_clear_halt(serial->dev, pipe);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 265) ret = usb_bulk_msg(serial->dev, pipe, result,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 266) sizeof(*hw_info) + 1, &alen, COMMAND_TIMEOUT_MS);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 267) if (ret) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 268) dev_err(&serial->dev->dev, "%s: Couldn't get results [%d]\n",
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 269) serial->type->description, ret);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 270) goto no_firmware;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 271) } else if (alen != sizeof(*hw_info) + 1) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 272) dev_err(&serial->dev->dev, "%s: Get results incomplete [%d]\n",
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 273) serial->type->description, alen);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 274) goto no_firmware;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 275) } else if (result[0] != command[0]) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 276) dev_err(&serial->dev->dev, "%s: Command failed [%d]\n",
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 277) serial->type->description, result[0]);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 278) goto no_firmware;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 279) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 280)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 281) hw_info = (struct whiteheat_hw_info *)&result[1];
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 282)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 283) dev_info(&serial->dev->dev, "%s: Firmware v%d.%02d\n",
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 284) serial->type->description,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 285) hw_info->sw_major_rev, hw_info->sw_minor_rev);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 286)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 287) command_info = kmalloc(sizeof(struct whiteheat_command_private),
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 288) GFP_KERNEL);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 289) if (!command_info)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 290) goto no_command_private;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 291)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 292) mutex_init(&command_info->mutex);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 293) command_info->port_running = 0;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 294) init_waitqueue_head(&command_info->wait_command);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 295) usb_set_serial_port_data(command_port, command_info);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 296) command_port->write_urb->complete = command_port_write_callback;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 297) command_port->read_urb->complete = command_port_read_callback;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 298) kfree(result);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 299) kfree(command);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 300)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 301) return 0;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 302)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 303) no_firmware:
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 304) /* Firmware likely not running */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 305) dev_err(&serial->dev->dev,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 306) "%s: Unable to retrieve firmware version, try replugging\n",
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 307) serial->type->description);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 308) dev_err(&serial->dev->dev,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 309) "%s: If the firmware is not running (status led not blinking)\n",
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 310) serial->type->description);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 311) dev_err(&serial->dev->dev,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 312) "%s: please contact support@connecttech.com\n",
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 313) serial->type->description);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 314) kfree(result);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 315) kfree(command);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 316) return -ENODEV;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 317)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 318) no_command_private:
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 319) kfree(result);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 320) no_result_buffer:
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 321) kfree(command);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 322) no_command_buffer:
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 323) return -ENOMEM;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 324) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 325)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 326) static void whiteheat_release(struct usb_serial *serial)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 327) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 328) struct usb_serial_port *command_port;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 329)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 330) /* free up our private data for our command port */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 331) command_port = serial->port[COMMAND_PORT];
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 332) kfree(usb_get_serial_port_data(command_port));
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 333) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 334)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 335) static int whiteheat_port_probe(struct usb_serial_port *port)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 336) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 337) struct whiteheat_private *info;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 338)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 339) info = kzalloc(sizeof(*info), GFP_KERNEL);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 340) if (!info)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 341) return -ENOMEM;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 342)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 343) usb_set_serial_port_data(port, info);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 344)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 345) return 0;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 346) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 347)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 348) static int whiteheat_port_remove(struct usb_serial_port *port)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 349) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 350) struct whiteheat_private *info;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 351)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 352) info = usb_get_serial_port_data(port);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 353) kfree(info);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 354)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 355) return 0;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 356) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 357)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 358) static int whiteheat_open(struct tty_struct *tty, struct usb_serial_port *port)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 359) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 360) int retval;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 361)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 362) retval = start_command_port(port->serial);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 363) if (retval)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 364) goto exit;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 365)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 366) /* send an open port command */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 367) retval = firm_open(port);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 368) if (retval) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 369) stop_command_port(port->serial);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 370) goto exit;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 371) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 372)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 373) retval = firm_purge(port, WHITEHEAT_PURGE_RX | WHITEHEAT_PURGE_TX);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 374) if (retval) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 375) firm_close(port);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 376) stop_command_port(port->serial);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 377) goto exit;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 378) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 379)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 380) if (tty)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 381) firm_setup_port(tty);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 382)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 383) /* Work around HCD bugs */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 384) usb_clear_halt(port->serial->dev, port->read_urb->pipe);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 385) usb_clear_halt(port->serial->dev, port->write_urb->pipe);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 386)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 387) retval = usb_serial_generic_open(tty, port);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 388) if (retval) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 389) firm_close(port);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 390) stop_command_port(port->serial);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 391) goto exit;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 392) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 393) exit:
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 394) return retval;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 395) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 396)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 397)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 398) static void whiteheat_close(struct usb_serial_port *port)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 399) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 400) firm_report_tx_done(port);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 401) firm_close(port);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 402)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 403) usb_serial_generic_close(port);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 404)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 405) stop_command_port(port->serial);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 406) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 407)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 408) static int whiteheat_tiocmget(struct tty_struct *tty)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 409) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 410) struct usb_serial_port *port = tty->driver_data;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 411) struct whiteheat_private *info = usb_get_serial_port_data(port);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 412) unsigned int modem_signals = 0;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 413)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 414) firm_get_dtr_rts(port);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 415) if (info->mcr & UART_MCR_DTR)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 416) modem_signals |= TIOCM_DTR;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 417) if (info->mcr & UART_MCR_RTS)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 418) modem_signals |= TIOCM_RTS;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 419)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 420) return modem_signals;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 421) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 422)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 423) static int whiteheat_tiocmset(struct tty_struct *tty,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 424) unsigned int set, unsigned int clear)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 425) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 426) struct usb_serial_port *port = tty->driver_data;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 427) struct whiteheat_private *info = usb_get_serial_port_data(port);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 428)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 429) if (set & TIOCM_RTS)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 430) info->mcr |= UART_MCR_RTS;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 431) if (set & TIOCM_DTR)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 432) info->mcr |= UART_MCR_DTR;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 433)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 434) if (clear & TIOCM_RTS)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 435) info->mcr &= ~UART_MCR_RTS;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 436) if (clear & TIOCM_DTR)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 437) info->mcr &= ~UART_MCR_DTR;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 438)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 439) firm_set_dtr(port, info->mcr & UART_MCR_DTR);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 440) firm_set_rts(port, info->mcr & UART_MCR_RTS);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 441) return 0;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 442) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 443)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 444)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 445) static int whiteheat_get_serial(struct tty_struct *tty,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 446) struct serial_struct *ss)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 447) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 448) struct usb_serial_port *port = tty->driver_data;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 449)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 450) ss->type = PORT_16654;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 451) ss->line = port->minor;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 452) ss->port = port->port_number;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 453) ss->xmit_fifo_size = kfifo_size(&port->write_fifo);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 454) ss->custom_divisor = 0;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 455) ss->baud_base = 460800;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 456) ss->close_delay = CLOSING_DELAY;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 457) ss->closing_wait = CLOSING_DELAY;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 458)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 459) return 0;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 460) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 461)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 462)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 463) static void whiteheat_set_termios(struct tty_struct *tty,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 464) struct usb_serial_port *port, struct ktermios *old_termios)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 465) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 466) firm_setup_port(tty);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 467) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 468)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 469) static void whiteheat_break_ctl(struct tty_struct *tty, int break_state)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 470) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 471) struct usb_serial_port *port = tty->driver_data;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 472) firm_set_break(port, break_state);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 473) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 474)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 475)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 476) /*****************************************************************************
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 477) * Connect Tech's White Heat callback routines
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 478) *****************************************************************************/
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 479) static void command_port_write_callback(struct urb *urb)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 480) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 481) int status = urb->status;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 482)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 483) if (status) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 484) dev_dbg(&urb->dev->dev, "nonzero urb status: %d\n", status);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 485) return;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 486) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 487) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 488)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 489)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 490) static void command_port_read_callback(struct urb *urb)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 491) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 492) struct usb_serial_port *command_port = urb->context;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 493) struct whiteheat_command_private *command_info;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 494) int status = urb->status;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 495) unsigned char *data = urb->transfer_buffer;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 496) int result;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 497)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 498) command_info = usb_get_serial_port_data(command_port);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 499) if (!command_info) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 500) dev_dbg(&urb->dev->dev, "%s - command_info is NULL, exiting.\n", __func__);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 501) return;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 502) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 503) if (!urb->actual_length) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 504) dev_dbg(&urb->dev->dev, "%s - empty response, exiting.\n", __func__);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 505) return;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 506) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 507) if (status) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 508) dev_dbg(&urb->dev->dev, "%s - nonzero urb status: %d\n", __func__, status);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 509) if (status != -ENOENT)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 510) command_info->command_finished = WHITEHEAT_CMD_FAILURE;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 511) wake_up(&command_info->wait_command);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 512) return;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 513) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 514)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 515) usb_serial_debug_data(&command_port->dev, __func__, urb->actual_length, data);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 516)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 517) if (data[0] == WHITEHEAT_CMD_COMPLETE) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 518) command_info->command_finished = WHITEHEAT_CMD_COMPLETE;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 519) wake_up(&command_info->wait_command);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 520) } else if (data[0] == WHITEHEAT_CMD_FAILURE) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 521) command_info->command_finished = WHITEHEAT_CMD_FAILURE;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 522) wake_up(&command_info->wait_command);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 523) } else if (data[0] == WHITEHEAT_EVENT) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 524) /* These are unsolicited reports from the firmware, hence no
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 525) waiting command to wakeup */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 526) dev_dbg(&urb->dev->dev, "%s - event received\n", __func__);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 527) } else if ((data[0] == WHITEHEAT_GET_DTR_RTS) &&
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 528) (urb->actual_length - 1 <= sizeof(command_info->result_buffer))) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 529) memcpy(command_info->result_buffer, &data[1],
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 530) urb->actual_length - 1);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 531) command_info->command_finished = WHITEHEAT_CMD_COMPLETE;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 532) wake_up(&command_info->wait_command);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 533) } else
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 534) dev_dbg(&urb->dev->dev, "%s - bad reply from firmware\n", __func__);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 535)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 536) /* Continue trying to always read */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 537) result = usb_submit_urb(command_port->read_urb, GFP_ATOMIC);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 538) if (result)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 539) dev_dbg(&urb->dev->dev, "%s - failed resubmitting read urb, error %d\n",
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 540) __func__, result);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 541) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 542)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 543)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 544) /*****************************************************************************
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 545) * Connect Tech's White Heat firmware interface
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 546) *****************************************************************************/
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 547) static int firm_send_command(struct usb_serial_port *port, __u8 command,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 548) __u8 *data, __u8 datasize)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 549) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 550) struct usb_serial_port *command_port;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 551) struct whiteheat_command_private *command_info;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 552) struct whiteheat_private *info;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 553) struct device *dev = &port->dev;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 554) __u8 *transfer_buffer;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 555) int retval = 0;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 556) int t;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 557)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 558) dev_dbg(dev, "%s - command %d\n", __func__, command);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 559)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 560) command_port = port->serial->port[COMMAND_PORT];
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 561) command_info = usb_get_serial_port_data(command_port);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 562)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 563) if (command_port->bulk_out_size < datasize + 1)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 564) return -EIO;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 565)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 566) mutex_lock(&command_info->mutex);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 567) command_info->command_finished = false;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 568)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 569) transfer_buffer = (__u8 *)command_port->write_urb->transfer_buffer;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 570) transfer_buffer[0] = command;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 571) memcpy(&transfer_buffer[1], data, datasize);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 572) command_port->write_urb->transfer_buffer_length = datasize + 1;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 573) retval = usb_submit_urb(command_port->write_urb, GFP_NOIO);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 574) if (retval) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 575) dev_dbg(dev, "%s - submit urb failed\n", __func__);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 576) goto exit;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 577) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 578)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 579) /* wait for the command to complete */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 580) t = wait_event_timeout(command_info->wait_command,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 581) (bool)command_info->command_finished, COMMAND_TIMEOUT);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 582) if (!t)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 583) usb_kill_urb(command_port->write_urb);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 584)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 585) if (command_info->command_finished == false) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 586) dev_dbg(dev, "%s - command timed out.\n", __func__);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 587) retval = -ETIMEDOUT;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 588) goto exit;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 589) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 590)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 591) if (command_info->command_finished == WHITEHEAT_CMD_FAILURE) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 592) dev_dbg(dev, "%s - command failed.\n", __func__);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 593) retval = -EIO;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 594) goto exit;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 595) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 596)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 597) if (command_info->command_finished == WHITEHEAT_CMD_COMPLETE) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 598) dev_dbg(dev, "%s - command completed.\n", __func__);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 599) switch (command) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 600) case WHITEHEAT_GET_DTR_RTS:
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 601) info = usb_get_serial_port_data(port);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 602) memcpy(&info->mcr, command_info->result_buffer,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 603) sizeof(struct whiteheat_dr_info));
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 604) break;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 605) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 606) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 607) exit:
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 608) mutex_unlock(&command_info->mutex);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 609) return retval;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 610) }
^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) static int firm_open(struct usb_serial_port *port)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 614) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 615) struct whiteheat_simple open_command;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 616)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 617) open_command.port = port->port_number + 1;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 618) return firm_send_command(port, WHITEHEAT_OPEN,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 619) (__u8 *)&open_command, sizeof(open_command));
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 620) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 621)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 622)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 623) static int firm_close(struct usb_serial_port *port)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 624) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 625) struct whiteheat_simple close_command;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 626)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 627) close_command.port = port->port_number + 1;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 628) return firm_send_command(port, WHITEHEAT_CLOSE,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 629) (__u8 *)&close_command, sizeof(close_command));
^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)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 633) static void firm_setup_port(struct tty_struct *tty)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 634) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 635) struct usb_serial_port *port = tty->driver_data;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 636) struct device *dev = &port->dev;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 637) struct whiteheat_port_settings port_settings;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 638) unsigned int cflag = tty->termios.c_cflag;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 639) speed_t baud;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 640)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 641) port_settings.port = port->port_number + 1;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 642)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 643) /* get the byte size */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 644) switch (cflag & CSIZE) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 645) case CS5: port_settings.bits = 5; break;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 646) case CS6: port_settings.bits = 6; break;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 647) case CS7: port_settings.bits = 7; break;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 648) default:
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 649) case CS8: port_settings.bits = 8; break;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 650) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 651) dev_dbg(dev, "%s - data bits = %d\n", __func__, port_settings.bits);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 652)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 653) /* determine the parity */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 654) if (cflag & PARENB)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 655) if (cflag & CMSPAR)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 656) if (cflag & PARODD)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 657) port_settings.parity = WHITEHEAT_PAR_MARK;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 658) else
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 659) port_settings.parity = WHITEHEAT_PAR_SPACE;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 660) else
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 661) if (cflag & PARODD)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 662) port_settings.parity = WHITEHEAT_PAR_ODD;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 663) else
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 664) port_settings.parity = WHITEHEAT_PAR_EVEN;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 665) else
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 666) port_settings.parity = WHITEHEAT_PAR_NONE;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 667) dev_dbg(dev, "%s - parity = %c\n", __func__, port_settings.parity);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 668)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 669) /* figure out the stop bits requested */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 670) if (cflag & CSTOPB)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 671) port_settings.stop = 2;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 672) else
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 673) port_settings.stop = 1;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 674) dev_dbg(dev, "%s - stop bits = %d\n", __func__, port_settings.stop);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 675)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 676) /* figure out the flow control settings */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 677) if (cflag & CRTSCTS)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 678) port_settings.hflow = (WHITEHEAT_HFLOW_CTS |
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 679) WHITEHEAT_HFLOW_RTS);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 680) else
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 681) port_settings.hflow = WHITEHEAT_HFLOW_NONE;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 682) dev_dbg(dev, "%s - hardware flow control = %s %s %s %s\n", __func__,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 683) (port_settings.hflow & WHITEHEAT_HFLOW_CTS) ? "CTS" : "",
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 684) (port_settings.hflow & WHITEHEAT_HFLOW_RTS) ? "RTS" : "",
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 685) (port_settings.hflow & WHITEHEAT_HFLOW_DSR) ? "DSR" : "",
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 686) (port_settings.hflow & WHITEHEAT_HFLOW_DTR) ? "DTR" : "");
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 687)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 688) /* determine software flow control */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 689) if (I_IXOFF(tty))
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 690) port_settings.sflow = WHITEHEAT_SFLOW_RXTX;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 691) else
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 692) port_settings.sflow = WHITEHEAT_SFLOW_NONE;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 693) dev_dbg(dev, "%s - software flow control = %c\n", __func__, port_settings.sflow);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 694)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 695) port_settings.xon = START_CHAR(tty);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 696) port_settings.xoff = STOP_CHAR(tty);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 697) dev_dbg(dev, "%s - XON = %2x, XOFF = %2x\n", __func__, port_settings.xon, port_settings.xoff);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 698)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 699) /* get the baud rate wanted */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 700) baud = tty_get_baud_rate(tty);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 701) port_settings.baud = cpu_to_le32(baud);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 702) dev_dbg(dev, "%s - baud rate = %u\n", __func__, baud);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 703)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 704) /* fixme: should set validated settings */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 705) tty_encode_baud_rate(tty, baud, baud);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 706)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 707) /* handle any settings that aren't specified in the tty structure */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 708) port_settings.lloop = 0;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 709)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 710) /* now send the message to the device */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 711) firm_send_command(port, WHITEHEAT_SETUP_PORT,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 712) (__u8 *)&port_settings, sizeof(port_settings));
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 713) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 714)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 715)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 716) static int firm_set_rts(struct usb_serial_port *port, __u8 onoff)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 717) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 718) struct whiteheat_set_rdb rts_command;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 719)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 720) rts_command.port = port->port_number + 1;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 721) rts_command.state = onoff;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 722) return firm_send_command(port, WHITEHEAT_SET_RTS,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 723) (__u8 *)&rts_command, sizeof(rts_command));
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 724) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 725)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 726)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 727) static int firm_set_dtr(struct usb_serial_port *port, __u8 onoff)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 728) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 729) struct whiteheat_set_rdb dtr_command;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 730)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 731) dtr_command.port = port->port_number + 1;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 732) dtr_command.state = onoff;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 733) return firm_send_command(port, WHITEHEAT_SET_DTR,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 734) (__u8 *)&dtr_command, sizeof(dtr_command));
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 735) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 736)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 737)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 738) static int firm_set_break(struct usb_serial_port *port, __u8 onoff)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 739) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 740) struct whiteheat_set_rdb break_command;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 741)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 742) break_command.port = port->port_number + 1;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 743) break_command.state = onoff;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 744) return firm_send_command(port, WHITEHEAT_SET_BREAK,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 745) (__u8 *)&break_command, sizeof(break_command));
^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)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 749) static int firm_purge(struct usb_serial_port *port, __u8 rxtx)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 750) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 751) struct whiteheat_purge purge_command;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 752)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 753) purge_command.port = port->port_number + 1;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 754) purge_command.what = rxtx;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 755) return firm_send_command(port, WHITEHEAT_PURGE,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 756) (__u8 *)&purge_command, sizeof(purge_command));
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 757) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 758)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 759)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 760) static int firm_get_dtr_rts(struct usb_serial_port *port)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 761) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 762) struct whiteheat_simple get_dr_command;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 763)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 764) get_dr_command.port = port->port_number + 1;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 765) return firm_send_command(port, WHITEHEAT_GET_DTR_RTS,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 766) (__u8 *)&get_dr_command, sizeof(get_dr_command));
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 767) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 768)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 769)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 770) static int firm_report_tx_done(struct usb_serial_port *port)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 771) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 772) struct whiteheat_simple close_command;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 773)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 774) close_command.port = port->port_number + 1;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 775) return firm_send_command(port, WHITEHEAT_REPORT_TX_DONE,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 776) (__u8 *)&close_command, sizeof(close_command));
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 777) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 778)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 779)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 780) /*****************************************************************************
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 781) * Connect Tech's White Heat utility functions
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 782) *****************************************************************************/
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 783) static int start_command_port(struct usb_serial *serial)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 784) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 785) struct usb_serial_port *command_port;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 786) struct whiteheat_command_private *command_info;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 787) int retval = 0;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 788)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 789) command_port = serial->port[COMMAND_PORT];
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 790) command_info = usb_get_serial_port_data(command_port);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 791) mutex_lock(&command_info->mutex);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 792) if (!command_info->port_running) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 793) /* Work around HCD bugs */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 794) usb_clear_halt(serial->dev, command_port->read_urb->pipe);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 795)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 796) retval = usb_submit_urb(command_port->read_urb, GFP_KERNEL);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 797) if (retval) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 798) dev_err(&serial->dev->dev,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 799) "%s - failed submitting read urb, error %d\n",
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 800) __func__, retval);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 801) goto exit;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 802) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 803) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 804) command_info->port_running++;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 805)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 806) exit:
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 807) mutex_unlock(&command_info->mutex);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 808) return retval;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 809) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 810)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 811)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 812) static void stop_command_port(struct usb_serial *serial)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 813) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 814) struct usb_serial_port *command_port;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 815) struct whiteheat_command_private *command_info;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 816)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 817) command_port = serial->port[COMMAND_PORT];
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 818) command_info = usb_get_serial_port_data(command_port);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 819) mutex_lock(&command_info->mutex);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 820) command_info->port_running--;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 821) if (!command_info->port_running)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 822) usb_kill_urb(command_port->read_urb);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 823) mutex_unlock(&command_info->mutex);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 824) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 825)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 826) module_usb_serial_driver(serial_drivers, id_table_combined);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 827)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 828) MODULE_AUTHOR(DRIVER_AUTHOR);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 829) MODULE_DESCRIPTION(DRIVER_DESC);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 830) MODULE_LICENSE("GPL");
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 831)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 832) MODULE_FIRMWARE("whiteheat.fw");
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 833) MODULE_FIRMWARE("whiteheat_loader.fw");
Orange Pi5 kernel
Deprecated Linux kernel 5.10.110 for OrangePi 5/5B/5+ boards
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