1 // SPDX-License-Identifier: GPL-2.0
3 * Fintek F81232 USB to serial adaptor driver
4 * Fintek F81532A/534A/535/536 USB to 2/4/8/12 serial adaptor driver
6 * Copyright (C) 2012 Greg Kroah-Hartman (gregkh@linuxfoundation.org)
7 * Copyright (C) 2012 Linux Foundation
10 #include <linux/kernel.h>
11 #include <linux/errno.h>
12 #include <linux/slab.h>
13 #include <linux/tty.h>
14 #include <linux/tty_driver.h>
15 #include <linux/tty_flip.h>
16 #include <linux/serial.h>
17 #include <linux/module.h>
18 #include <linux/moduleparam.h>
19 #include <linux/mutex.h>
20 #include <linux/uaccess.h>
21 #include <linux/usb.h>
22 #include <linux/usb/serial.h>
23 #include <linux/serial_reg.h>
26 { USB_DEVICE(0x1934, 0x0706) } /* 1 port UART device */
28 #define F81534A_SERIES_ID \
29 { USB_DEVICE(0x2c42, 0x1602) }, /* In-Box 2 port UART device */ \
30 { USB_DEVICE(0x2c42, 0x1604) }, /* In-Box 4 port UART device */ \
31 { USB_DEVICE(0x2c42, 0x1605) }, /* In-Box 8 port UART device */ \
32 { USB_DEVICE(0x2c42, 0x1606) }, /* In-Box 12 port UART device */ \
33 { USB_DEVICE(0x2c42, 0x1608) }, /* Non-Flash type */ \
34 { USB_DEVICE(0x2c42, 0x1632) }, /* 2 port UART device */ \
35 { USB_DEVICE(0x2c42, 0x1634) }, /* 4 port UART device */ \
36 { USB_DEVICE(0x2c42, 0x1635) }, /* 8 port UART device */ \
37 { USB_DEVICE(0x2c42, 0x1636) } /* 12 port UART device */
39 #define F81534A_CTRL_ID \
40 { USB_DEVICE(0x2c42, 0x16f8) } /* Global control device */
42 static const struct usb_device_id f81232_id_table[] = {
44 { } /* Terminating entry */
47 static const struct usb_device_id f81534a_id_table[] = {
49 { } /* Terminating entry */
52 static const struct usb_device_id f81534a_ctrl_id_table[] = {
54 { } /* Terminating entry */
57 static const struct usb_device_id combined_id_table[] = {
61 { } /* Terminating entry */
63 MODULE_DEVICE_TABLE(usb, combined_id_table);
65 /* Maximum baudrate for F81232 */
66 #define F81232_MAX_BAUDRATE 1500000
67 #define F81232_DEF_BAUDRATE 9600
69 /* USB Control EP parameter */
70 #define F81232_REGISTER_REQUEST 0xa0
71 #define F81232_GET_REGISTER 0xc0
72 #define F81232_SET_REGISTER 0x40
73 #define F81534A_ACCESS_REG_RETRY 2
75 #define SERIAL_BASE_ADDRESS 0x0120
76 #define RECEIVE_BUFFER_REGISTER (0x00 + SERIAL_BASE_ADDRESS)
77 #define INTERRUPT_ENABLE_REGISTER (0x01 + SERIAL_BASE_ADDRESS)
78 #define FIFO_CONTROL_REGISTER (0x02 + SERIAL_BASE_ADDRESS)
79 #define LINE_CONTROL_REGISTER (0x03 + SERIAL_BASE_ADDRESS)
80 #define MODEM_CONTROL_REGISTER (0x04 + SERIAL_BASE_ADDRESS)
81 #define LINE_STATUS_REGISTER (0x05 + SERIAL_BASE_ADDRESS)
82 #define MODEM_STATUS_REGISTER (0x06 + SERIAL_BASE_ADDRESS)
85 * F81232 Clock registers (106h)
87 * Bit1-0: Clock source selector
93 #define F81232_CLK_REGISTER 0x106
94 #define F81232_CLK_1_846_MHZ 0
95 #define F81232_CLK_18_46_MHZ BIT(0)
96 #define F81232_CLK_24_MHZ BIT(1)
97 #define F81232_CLK_14_77_MHZ (BIT(1) | BIT(0))
98 #define F81232_CLK_MASK GENMASK(1, 0)
100 #define F81534A_MODE_REG 0x107
101 #define F81534A_TRIGGER_MASK GENMASK(3, 2)
102 #define F81534A_TRIGGER_MULTIPLE_4X BIT(3)
103 #define F81534A_FIFO_128BYTE (BIT(1) | BIT(0))
105 /* Serial port self GPIO control, 2bytes [control&output data][input data] */
106 #define F81534A_GPIO_REG 0x10e
107 #define F81534A_GPIO_MODE2_DIR BIT(6) /* 1: input, 0: output */
108 #define F81534A_GPIO_MODE1_DIR BIT(5)
109 #define F81534A_GPIO_MODE0_DIR BIT(4)
110 #define F81534A_GPIO_MODE2_OUTPUT BIT(2)
111 #define F81534A_GPIO_MODE1_OUTPUT BIT(1)
112 #define F81534A_GPIO_MODE0_OUTPUT BIT(0)
114 #define F81534A_CTRL_CMD_ENABLE_PORT 0x116
116 struct f81232_private {
122 struct work_struct lsr_work;
123 struct work_struct interrupt_work;
124 struct usb_serial_port *port;
127 static u32 const baudrate_table[] = { 115200, 921600, 1152000, 1500000 };
128 static u8 const clock_table[] = { F81232_CLK_1_846_MHZ, F81232_CLK_14_77_MHZ,
129 F81232_CLK_18_46_MHZ, F81232_CLK_24_MHZ };
131 static int calc_baud_divisor(speed_t baudrate, speed_t clockrate)
133 return DIV_ROUND_CLOSEST(clockrate, baudrate);
136 static int f81232_get_register(struct usb_serial_port *port, u16 reg, u8 *val)
139 struct usb_device *dev = port->serial->dev;
141 status = usb_control_msg_recv(dev,
143 F81232_REGISTER_REQUEST,
149 USB_CTRL_GET_TIMEOUT,
152 dev_err(&port->dev, "%s failed status: %d\n", __func__, status);
153 status = usb_translate_errors(status);
159 static int f81232_set_register(struct usb_serial_port *port, u16 reg, u8 val)
162 struct usb_device *dev = port->serial->dev;
164 status = usb_control_msg_send(dev,
166 F81232_REGISTER_REQUEST,
172 USB_CTRL_SET_TIMEOUT,
175 dev_err(&port->dev, "%s failed status: %d\n", __func__, status);
176 status = usb_translate_errors(status);
182 static int f81232_set_mask_register(struct usb_serial_port *port, u16 reg,
188 status = f81232_get_register(port, reg, &tmp);
192 tmp = (tmp & ~mask) | (val & mask);
194 return f81232_set_register(port, reg, tmp);
197 static void f81232_read_msr(struct usb_serial_port *port)
201 struct tty_struct *tty;
202 struct f81232_private *priv = usb_get_serial_port_data(port);
204 mutex_lock(&priv->lock);
205 status = f81232_get_register(port, MODEM_STATUS_REGISTER,
208 dev_err(&port->dev, "%s fail, status: %d\n", __func__, status);
209 mutex_unlock(&priv->lock);
213 if (!(current_msr & UART_MSR_ANY_DELTA)) {
214 mutex_unlock(&priv->lock);
218 priv->modem_status = current_msr;
220 if (current_msr & UART_MSR_DCTS)
222 if (current_msr & UART_MSR_DDSR)
224 if (current_msr & UART_MSR_TERI)
226 if (current_msr & UART_MSR_DDCD) {
228 tty = tty_port_tty_get(&port->port);
230 usb_serial_handle_dcd_change(port, tty,
231 current_msr & UART_MSR_DCD);
237 wake_up_interruptible(&port->port.delta_msr_wait);
238 mutex_unlock(&priv->lock);
241 static int f81232_set_mctrl(struct usb_serial_port *port,
242 unsigned int set, unsigned int clear)
246 struct f81232_private *priv = usb_get_serial_port_data(port);
248 if (((set | clear) & (TIOCM_DTR | TIOCM_RTS)) == 0)
249 return 0; /* no change */
251 /* 'set' takes precedence over 'clear' */
254 /* force enable interrupt with OUT2 */
255 mutex_lock(&priv->lock);
256 val = UART_MCR_OUT2 | priv->modem_control;
258 if (clear & TIOCM_DTR)
259 val &= ~UART_MCR_DTR;
261 if (clear & TIOCM_RTS)
262 val &= ~UART_MCR_RTS;
270 dev_dbg(&port->dev, "%s new:%02x old:%02x\n", __func__,
271 val, priv->modem_control);
273 status = f81232_set_register(port, MODEM_CONTROL_REGISTER, val);
275 dev_err(&port->dev, "%s set MCR status < 0\n", __func__);
276 mutex_unlock(&priv->lock);
280 priv->modem_control = val;
281 mutex_unlock(&priv->lock);
286 static void f81232_update_line_status(struct usb_serial_port *port,
288 size_t actual_length)
290 struct f81232_private *priv = usb_get_serial_port_data(port);
295 switch (data[0] & 0x07) {
296 case 0x00: /* msr change */
297 dev_dbg(&port->dev, "IIR: MSR Change: %02x\n", data[0]);
298 schedule_work(&priv->interrupt_work);
300 case 0x02: /* tx-empty */
302 case 0x04: /* rx data available */
304 case 0x06: /* lsr change */
305 /* we can forget it. the LSR will read from bulk-in */
306 dev_dbg(&port->dev, "IIR: LSR Change: %02x\n", data[0]);
311 static void f81232_read_int_callback(struct urb *urb)
313 struct usb_serial_port *port = urb->context;
314 unsigned char *data = urb->transfer_buffer;
315 unsigned int actual_length = urb->actual_length;
316 int status = urb->status;
326 /* this urb is terminated, clean up */
327 dev_dbg(&port->dev, "%s - urb shutting down with status: %d\n",
331 dev_dbg(&port->dev, "%s - nonzero urb status received: %d\n",
336 usb_serial_debug_data(&port->dev, __func__,
337 urb->actual_length, urb->transfer_buffer);
339 f81232_update_line_status(port, data, actual_length);
342 retval = usb_submit_urb(urb, GFP_ATOMIC);
344 dev_err(&urb->dev->dev,
345 "%s - usb_submit_urb failed with result %d\n",
349 static char f81232_handle_lsr(struct usb_serial_port *port, u8 lsr)
351 struct f81232_private *priv = usb_get_serial_port_data(port);
352 char tty_flag = TTY_NORMAL;
354 if (!(lsr & UART_LSR_BRK_ERROR_BITS))
357 if (lsr & UART_LSR_BI) {
358 tty_flag = TTY_BREAK;
360 usb_serial_handle_break(port);
361 } else if (lsr & UART_LSR_PE) {
362 tty_flag = TTY_PARITY;
363 port->icount.parity++;
364 } else if (lsr & UART_LSR_FE) {
365 tty_flag = TTY_FRAME;
366 port->icount.frame++;
369 if (lsr & UART_LSR_OE) {
370 port->icount.overrun++;
371 schedule_work(&priv->lsr_work);
372 tty_insert_flip_char(&port->port, 0, TTY_OVERRUN);
378 static void f81232_process_read_urb(struct urb *urb)
380 struct usb_serial_port *port = urb->context;
381 unsigned char *data = urb->transfer_buffer;
387 * When opening the port we get a 1-byte packet with the current LSR,
390 if ((urb->actual_length < 2) || (urb->actual_length % 2))
393 /* bulk-in data: [LSR(1Byte)+DATA(1Byte)][LSR(1Byte)+DATA(1Byte)]... */
395 for (i = 0; i < urb->actual_length; i += 2) {
397 tty_flag = f81232_handle_lsr(port, lsr);
400 if (usb_serial_handle_sysrq_char(port, data[i + 1]))
404 tty_insert_flip_char(&port->port, data[i + 1], tty_flag);
407 tty_flip_buffer_push(&port->port);
410 static void f81534a_process_read_urb(struct urb *urb)
412 struct usb_serial_port *port = urb->context;
413 unsigned char *data = urb->transfer_buffer;
419 if (urb->actual_length < 3) {
420 dev_err(&port->dev, "short message received: %d\n",
426 if (len != urb->actual_length) {
427 dev_err(&port->dev, "malformed message received: %d (%d)\n",
428 urb->actual_length, len);
432 /* bulk-in data: [LEN][Data.....][LSR] */
434 tty_flag = f81232_handle_lsr(port, lsr);
437 for (i = 1; i < len - 1; ++i) {
438 if (!usb_serial_handle_sysrq_char(port, data[i])) {
439 tty_insert_flip_char(&port->port, data[i],
444 tty_insert_flip_string_fixed_flag(&port->port, &data[1],
448 tty_flip_buffer_push(&port->port);
451 static int f81232_break_ctl(struct tty_struct *tty, int break_state)
453 struct usb_serial_port *port = tty->driver_data;
454 struct f81232_private *priv = usb_get_serial_port_data(port);
457 mutex_lock(&priv->lock);
460 priv->shadow_lcr |= UART_LCR_SBC;
462 priv->shadow_lcr &= ~UART_LCR_SBC;
464 status = f81232_set_register(port, LINE_CONTROL_REGISTER,
467 dev_err(&port->dev, "set break failed: %d\n", status);
469 mutex_unlock(&priv->lock);
474 static int f81232_find_clk(speed_t baudrate)
478 for (idx = 0; idx < ARRAY_SIZE(baudrate_table); ++idx) {
479 if (baudrate <= baudrate_table[idx] &&
480 baudrate_table[idx] % baudrate == 0)
487 static void f81232_set_baudrate(struct tty_struct *tty,
488 struct usb_serial_port *port, speed_t baudrate,
489 speed_t old_baudrate)
491 struct f81232_private *priv = usb_get_serial_port_data(port);
497 speed_t baud_list[] = { baudrate, old_baudrate, F81232_DEF_BAUDRATE };
499 for (i = 0; i < ARRAY_SIZE(baud_list); ++i) {
500 baudrate = baud_list[i];
502 tty_encode_baud_rate(tty, 0, 0);
506 idx = f81232_find_clk(baudrate);
508 tty_encode_baud_rate(tty, baudrate, baudrate);
516 priv->baud_base = baudrate_table[idx];
517 divisor = calc_baud_divisor(baudrate, priv->baud_base);
519 status = f81232_set_mask_register(port, F81232_CLK_REGISTER,
520 F81232_CLK_MASK, clock_table[idx]);
522 dev_err(&port->dev, "%s failed to set CLK_REG: %d\n",
527 status = f81232_get_register(port, LINE_CONTROL_REGISTER,
530 dev_err(&port->dev, "%s failed to get LCR: %d\n",
535 status = f81232_set_register(port, LINE_CONTROL_REGISTER,
536 lcr | UART_LCR_DLAB); /* Enable DLAB */
538 dev_err(&port->dev, "%s failed to set DLAB: %d\n",
543 status = f81232_set_register(port, RECEIVE_BUFFER_REGISTER,
544 divisor & 0x00ff); /* low */
546 dev_err(&port->dev, "%s failed to set baudrate MSB: %d\n",
551 status = f81232_set_register(port, INTERRUPT_ENABLE_REGISTER,
552 (divisor & 0xff00) >> 8); /* high */
554 dev_err(&port->dev, "%s failed to set baudrate LSB: %d\n",
559 status = f81232_set_register(port, LINE_CONTROL_REGISTER,
560 lcr & ~UART_LCR_DLAB);
562 dev_err(&port->dev, "%s failed to set DLAB: %d\n",
567 static int f81232_port_enable(struct usb_serial_port *port)
572 /* fifo on, trigger8, clear TX/RX*/
573 val = UART_FCR_TRIGGER_8 | UART_FCR_ENABLE_FIFO | UART_FCR_CLEAR_RCVR |
576 status = f81232_set_register(port, FIFO_CONTROL_REGISTER, val);
578 dev_err(&port->dev, "%s failed to set FCR: %d\n",
583 /* MSR Interrupt only, LSR will read from Bulk-in odd byte */
584 status = f81232_set_register(port, INTERRUPT_ENABLE_REGISTER,
587 dev_err(&port->dev, "%s failed to set IER: %d\n",
595 static int f81232_port_disable(struct usb_serial_port *port)
599 status = f81232_set_register(port, INTERRUPT_ENABLE_REGISTER, 0);
601 dev_err(&port->dev, "%s failed to set IER: %d\n",
609 static void f81232_set_termios(struct tty_struct *tty,
610 struct usb_serial_port *port,
611 const struct ktermios *old_termios)
613 struct f81232_private *priv = usb_get_serial_port_data(port);
619 /* Don't change anything if nothing has changed */
620 if (old_termios && !tty_termios_hw_change(&tty->termios, old_termios))
623 if (C_BAUD(tty) == B0)
624 f81232_set_mctrl(port, 0, TIOCM_DTR | TIOCM_RTS);
625 else if (old_termios && (old_termios->c_cflag & CBAUD) == B0)
626 f81232_set_mctrl(port, TIOCM_DTR | TIOCM_RTS, 0);
628 baudrate = tty_get_baud_rate(tty);
631 old_baud = tty_termios_baud_rate(old_termios);
633 old_baud = F81232_DEF_BAUDRATE;
635 f81232_set_baudrate(tty, port, baudrate, old_baud);
639 new_lcr |= UART_LCR_PARITY;
642 new_lcr |= UART_LCR_EPAR;
645 new_lcr |= UART_LCR_SPAR;
649 new_lcr |= UART_LCR_STOP;
651 new_lcr |= UART_LCR_WLEN(tty_get_char_size(tty->termios.c_cflag));
653 mutex_lock(&priv->lock);
655 new_lcr |= (priv->shadow_lcr & UART_LCR_SBC);
656 status = f81232_set_register(port, LINE_CONTROL_REGISTER, new_lcr);
658 dev_err(&port->dev, "%s failed to set LCR: %d\n",
662 priv->shadow_lcr = new_lcr;
664 mutex_unlock(&priv->lock);
667 static int f81232_tiocmget(struct tty_struct *tty)
670 struct usb_serial_port *port = tty->driver_data;
671 struct f81232_private *port_priv = usb_get_serial_port_data(port);
674 /* force get current MSR changed state */
675 f81232_read_msr(port);
677 mutex_lock(&port_priv->lock);
678 mcr = port_priv->modem_control;
679 msr = port_priv->modem_status;
680 mutex_unlock(&port_priv->lock);
682 r = (mcr & UART_MCR_DTR ? TIOCM_DTR : 0) |
683 (mcr & UART_MCR_RTS ? TIOCM_RTS : 0) |
684 (msr & UART_MSR_CTS ? TIOCM_CTS : 0) |
685 (msr & UART_MSR_DCD ? TIOCM_CAR : 0) |
686 (msr & UART_MSR_RI ? TIOCM_RI : 0) |
687 (msr & UART_MSR_DSR ? TIOCM_DSR : 0);
692 static int f81232_tiocmset(struct tty_struct *tty,
693 unsigned int set, unsigned int clear)
695 struct usb_serial_port *port = tty->driver_data;
697 return f81232_set_mctrl(port, set, clear);
700 static int f81232_open(struct tty_struct *tty, struct usb_serial_port *port)
704 result = f81232_port_enable(port);
710 f81232_set_termios(tty, port, NULL);
712 result = usb_submit_urb(port->interrupt_in_urb, GFP_KERNEL);
714 dev_err(&port->dev, "%s - failed submitting interrupt urb,"
715 " error %d\n", __func__, result);
719 result = usb_serial_generic_open(tty, port);
721 usb_kill_urb(port->interrupt_in_urb);
728 static int f81534a_open(struct tty_struct *tty, struct usb_serial_port *port)
734 val = F81534A_TRIGGER_MULTIPLE_4X | F81534A_FIFO_128BYTE;
735 mask = F81534A_TRIGGER_MASK | F81534A_FIFO_128BYTE;
737 status = f81232_set_mask_register(port, F81534A_MODE_REG, mask, val);
739 dev_err(&port->dev, "failed to set MODE_REG: %d\n", status);
743 return f81232_open(tty, port);
746 static void f81232_close(struct usb_serial_port *port)
748 struct f81232_private *port_priv = usb_get_serial_port_data(port);
750 f81232_port_disable(port);
751 usb_serial_generic_close(port);
752 usb_kill_urb(port->interrupt_in_urb);
753 flush_work(&port_priv->interrupt_work);
754 flush_work(&port_priv->lsr_work);
757 static void f81232_dtr_rts(struct usb_serial_port *port, int on)
760 f81232_set_mctrl(port, TIOCM_DTR | TIOCM_RTS, 0);
762 f81232_set_mctrl(port, 0, TIOCM_DTR | TIOCM_RTS);
765 static bool f81232_tx_empty(struct usb_serial_port *port)
770 status = f81232_get_register(port, LINE_STATUS_REGISTER, &tmp);
772 if ((tmp & UART_LSR_TEMT) != UART_LSR_TEMT)
779 static int f81232_carrier_raised(struct usb_serial_port *port)
782 struct f81232_private *priv = usb_get_serial_port_data(port);
784 mutex_lock(&priv->lock);
785 msr = priv->modem_status;
786 mutex_unlock(&priv->lock);
788 if (msr & UART_MSR_DCD)
793 static void f81232_get_serial(struct tty_struct *tty, struct serial_struct *ss)
795 struct usb_serial_port *port = tty->driver_data;
796 struct f81232_private *priv = usb_get_serial_port_data(port);
798 ss->baud_base = priv->baud_base;
801 static void f81232_interrupt_work(struct work_struct *work)
803 struct f81232_private *priv =
804 container_of(work, struct f81232_private, interrupt_work);
806 f81232_read_msr(priv->port);
809 static void f81232_lsr_worker(struct work_struct *work)
811 struct f81232_private *priv;
812 struct usb_serial_port *port;
816 priv = container_of(work, struct f81232_private, lsr_work);
819 status = f81232_get_register(port, LINE_STATUS_REGISTER, &tmp);
821 dev_warn(&port->dev, "read LSR failed: %d\n", status);
824 static int f81534a_ctrl_set_register(struct usb_interface *intf, u16 reg,
827 struct usb_device *dev = interface_to_usbdev(intf);
828 int retry = F81534A_ACCESS_REG_RETRY;
832 status = usb_control_msg_send(dev,
834 F81232_REGISTER_REQUEST,
840 USB_CTRL_SET_TIMEOUT,
843 status = usb_translate_errors(status);
852 dev_err(&intf->dev, "failed to set register 0x%x: %d\n",
859 static int f81534a_ctrl_enable_all_ports(struct usb_interface *intf, bool en)
861 unsigned char enable[2] = {0};
865 * Enable all available serial ports, define as following:
866 * bit 15 : Reset behavior (when HUB got soft reset)
867 * 0: maintain all serial port enabled state.
868 * 1: disable all serial port.
869 * bit 0~11 : Serial port enable bit.
876 status = f81534a_ctrl_set_register(intf, F81534A_CTRL_CMD_ENABLE_PORT,
877 sizeof(enable), enable);
879 dev_err(&intf->dev, "failed to enable ports: %d\n", status);
884 static int f81534a_ctrl_probe(struct usb_interface *intf,
885 const struct usb_device_id *id)
887 return f81534a_ctrl_enable_all_ports(intf, true);
890 static void f81534a_ctrl_disconnect(struct usb_interface *intf)
892 f81534a_ctrl_enable_all_ports(intf, false);
895 static int f81534a_ctrl_resume(struct usb_interface *intf)
897 return f81534a_ctrl_enable_all_ports(intf, true);
900 static int f81232_port_probe(struct usb_serial_port *port)
902 struct f81232_private *priv;
904 priv = devm_kzalloc(&port->dev, sizeof(*priv), GFP_KERNEL);
908 mutex_init(&priv->lock);
909 INIT_WORK(&priv->interrupt_work, f81232_interrupt_work);
910 INIT_WORK(&priv->lsr_work, f81232_lsr_worker);
912 usb_set_serial_port_data(port, priv);
919 static int f81534a_port_probe(struct usb_serial_port *port)
923 /* tri-state with pull-high, default RS232 Mode */
924 status = f81232_set_register(port, F81534A_GPIO_REG,
925 F81534A_GPIO_MODE2_DIR);
929 return f81232_port_probe(port);
932 static int f81232_suspend(struct usb_serial *serial, pm_message_t message)
934 struct usb_serial_port *port = serial->port[0];
935 struct f81232_private *port_priv = usb_get_serial_port_data(port);
938 for (i = 0; i < ARRAY_SIZE(port->read_urbs); ++i)
939 usb_kill_urb(port->read_urbs[i]);
941 usb_kill_urb(port->interrupt_in_urb);
944 flush_work(&port_priv->interrupt_work);
945 flush_work(&port_priv->lsr_work);
951 static int f81232_resume(struct usb_serial *serial)
953 struct usb_serial_port *port = serial->port[0];
956 if (tty_port_initialized(&port->port)) {
957 result = usb_submit_urb(port->interrupt_in_urb, GFP_NOIO);
959 dev_err(&port->dev, "submit interrupt urb failed: %d\n",
965 return usb_serial_generic_resume(serial);
968 static struct usb_serial_driver f81232_device = {
970 .owner = THIS_MODULE,
973 .id_table = f81232_id_table,
976 .bulk_out_size = 256,
978 .close = f81232_close,
979 .dtr_rts = f81232_dtr_rts,
980 .carrier_raised = f81232_carrier_raised,
981 .get_serial = f81232_get_serial,
982 .break_ctl = f81232_break_ctl,
983 .set_termios = f81232_set_termios,
984 .tiocmget = f81232_tiocmget,
985 .tiocmset = f81232_tiocmset,
986 .tiocmiwait = usb_serial_generic_tiocmiwait,
987 .tx_empty = f81232_tx_empty,
988 .process_read_urb = f81232_process_read_urb,
989 .read_int_callback = f81232_read_int_callback,
990 .port_probe = f81232_port_probe,
991 .suspend = f81232_suspend,
992 .resume = f81232_resume,
995 static struct usb_serial_driver f81534a_device = {
997 .owner = THIS_MODULE,
1000 .id_table = f81534a_id_table,
1002 .open = f81534a_open,
1003 .close = f81232_close,
1004 .dtr_rts = f81232_dtr_rts,
1005 .carrier_raised = f81232_carrier_raised,
1006 .get_serial = f81232_get_serial,
1007 .break_ctl = f81232_break_ctl,
1008 .set_termios = f81232_set_termios,
1009 .tiocmget = f81232_tiocmget,
1010 .tiocmset = f81232_tiocmset,
1011 .tiocmiwait = usb_serial_generic_tiocmiwait,
1012 .tx_empty = f81232_tx_empty,
1013 .process_read_urb = f81534a_process_read_urb,
1014 .read_int_callback = f81232_read_int_callback,
1015 .port_probe = f81534a_port_probe,
1016 .suspend = f81232_suspend,
1017 .resume = f81232_resume,
1020 static struct usb_serial_driver * const serial_drivers[] = {
1026 static struct usb_driver f81534a_ctrl_driver = {
1027 .name = "f81534a_ctrl",
1028 .id_table = f81534a_ctrl_id_table,
1029 .probe = f81534a_ctrl_probe,
1030 .disconnect = f81534a_ctrl_disconnect,
1031 .resume = f81534a_ctrl_resume,
1034 static int __init f81232_init(void)
1038 status = usb_register_driver(&f81534a_ctrl_driver, THIS_MODULE,
1043 status = usb_serial_register_drivers(serial_drivers, KBUILD_MODNAME,
1046 usb_deregister(&f81534a_ctrl_driver);
1053 static void __exit f81232_exit(void)
1055 usb_serial_deregister_drivers(serial_drivers);
1056 usb_deregister(&f81534a_ctrl_driver);
1059 module_init(f81232_init);
1060 module_exit(f81232_exit);
1062 MODULE_DESCRIPTION("Fintek F81232/532A/534A/535/536 USB to serial driver");
1063 MODULE_AUTHOR("Greg Kroah-Hartman <gregkh@linuxfoundation.org>");
1064 MODULE_AUTHOR("Peter Hong <peter_hong@fintek.com.tw>");
1065 MODULE_LICENSE("GPL v2");