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)
140 struct usb_device *dev = port->serial->dev;
142 tmp = kmalloc(sizeof(*val), GFP_KERNEL);
146 status = usb_control_msg(dev,
147 usb_rcvctrlpipe(dev, 0),
148 F81232_REGISTER_REQUEST,
154 USB_CTRL_GET_TIMEOUT);
155 if (status != sizeof(*val)) {
156 dev_err(&port->dev, "%s failed status: %d\n", __func__, status);
159 status = usb_translate_errors(status);
171 static int f81232_set_register(struct usb_serial_port *port, u16 reg, u8 val)
175 struct usb_device *dev = port->serial->dev;
177 tmp = kmalloc(sizeof(val), GFP_KERNEL);
183 status = usb_control_msg(dev,
184 usb_sndctrlpipe(dev, 0),
185 F81232_REGISTER_REQUEST,
191 USB_CTRL_SET_TIMEOUT);
192 if (status != sizeof(val)) {
193 dev_err(&port->dev, "%s failed status: %d\n", __func__, status);
196 status = usb_translate_errors(status);
207 static int f81232_set_mask_register(struct usb_serial_port *port, u16 reg,
213 status = f81232_get_register(port, reg, &tmp);
217 tmp = (tmp & ~mask) | (val & mask);
219 return f81232_set_register(port, reg, tmp);
222 static void f81232_read_msr(struct usb_serial_port *port)
226 struct tty_struct *tty;
227 struct f81232_private *priv = usb_get_serial_port_data(port);
229 mutex_lock(&priv->lock);
230 status = f81232_get_register(port, MODEM_STATUS_REGISTER,
233 dev_err(&port->dev, "%s fail, status: %d\n", __func__, status);
234 mutex_unlock(&priv->lock);
238 if (!(current_msr & UART_MSR_ANY_DELTA)) {
239 mutex_unlock(&priv->lock);
243 priv->modem_status = current_msr;
245 if (current_msr & UART_MSR_DCTS)
247 if (current_msr & UART_MSR_DDSR)
249 if (current_msr & UART_MSR_TERI)
251 if (current_msr & UART_MSR_DDCD) {
253 tty = tty_port_tty_get(&port->port);
255 usb_serial_handle_dcd_change(port, tty,
256 current_msr & UART_MSR_DCD);
262 wake_up_interruptible(&port->port.delta_msr_wait);
263 mutex_unlock(&priv->lock);
266 static int f81232_set_mctrl(struct usb_serial_port *port,
267 unsigned int set, unsigned int clear)
271 struct f81232_private *priv = usb_get_serial_port_data(port);
273 if (((set | clear) & (TIOCM_DTR | TIOCM_RTS)) == 0)
274 return 0; /* no change */
276 /* 'set' takes precedence over 'clear' */
279 /* force enable interrupt with OUT2 */
280 mutex_lock(&priv->lock);
281 val = UART_MCR_OUT2 | priv->modem_control;
283 if (clear & TIOCM_DTR)
284 val &= ~UART_MCR_DTR;
286 if (clear & TIOCM_RTS)
287 val &= ~UART_MCR_RTS;
295 dev_dbg(&port->dev, "%s new:%02x old:%02x\n", __func__,
296 val, priv->modem_control);
298 status = f81232_set_register(port, MODEM_CONTROL_REGISTER, val);
300 dev_err(&port->dev, "%s set MCR status < 0\n", __func__);
301 mutex_unlock(&priv->lock);
305 priv->modem_control = val;
306 mutex_unlock(&priv->lock);
311 static void f81232_update_line_status(struct usb_serial_port *port,
313 size_t actual_length)
315 struct f81232_private *priv = usb_get_serial_port_data(port);
320 switch (data[0] & 0x07) {
321 case 0x00: /* msr change */
322 dev_dbg(&port->dev, "IIR: MSR Change: %02x\n", data[0]);
323 schedule_work(&priv->interrupt_work);
325 case 0x02: /* tx-empty */
327 case 0x04: /* rx data available */
329 case 0x06: /* lsr change */
330 /* we can forget it. the LSR will read from bulk-in */
331 dev_dbg(&port->dev, "IIR: LSR Change: %02x\n", data[0]);
336 static void f81232_read_int_callback(struct urb *urb)
338 struct usb_serial_port *port = urb->context;
339 unsigned char *data = urb->transfer_buffer;
340 unsigned int actual_length = urb->actual_length;
341 int status = urb->status;
351 /* this urb is terminated, clean up */
352 dev_dbg(&port->dev, "%s - urb shutting down with status: %d\n",
356 dev_dbg(&port->dev, "%s - nonzero urb status received: %d\n",
361 usb_serial_debug_data(&port->dev, __func__,
362 urb->actual_length, urb->transfer_buffer);
364 f81232_update_line_status(port, data, actual_length);
367 retval = usb_submit_urb(urb, GFP_ATOMIC);
369 dev_err(&urb->dev->dev,
370 "%s - usb_submit_urb failed with result %d\n",
374 static char f81232_handle_lsr(struct usb_serial_port *port, u8 lsr)
376 struct f81232_private *priv = usb_get_serial_port_data(port);
377 char tty_flag = TTY_NORMAL;
379 if (!(lsr & UART_LSR_BRK_ERROR_BITS))
382 if (lsr & UART_LSR_BI) {
383 tty_flag = TTY_BREAK;
385 usb_serial_handle_break(port);
386 } else if (lsr & UART_LSR_PE) {
387 tty_flag = TTY_PARITY;
388 port->icount.parity++;
389 } else if (lsr & UART_LSR_FE) {
390 tty_flag = TTY_FRAME;
391 port->icount.frame++;
394 if (lsr & UART_LSR_OE) {
395 port->icount.overrun++;
396 schedule_work(&priv->lsr_work);
397 tty_insert_flip_char(&port->port, 0, TTY_OVERRUN);
403 static void f81232_process_read_urb(struct urb *urb)
405 struct usb_serial_port *port = urb->context;
406 unsigned char *data = urb->transfer_buffer;
412 * When opening the port we get a 1-byte packet with the current LSR,
415 if ((urb->actual_length < 2) || (urb->actual_length % 2))
418 /* bulk-in data: [LSR(1Byte)+DATA(1Byte)][LSR(1Byte)+DATA(1Byte)]... */
420 for (i = 0; i < urb->actual_length; i += 2) {
422 tty_flag = f81232_handle_lsr(port, lsr);
425 if (usb_serial_handle_sysrq_char(port, data[i + 1]))
429 tty_insert_flip_char(&port->port, data[i + 1], tty_flag);
432 tty_flip_buffer_push(&port->port);
435 static void f81534a_process_read_urb(struct urb *urb)
437 struct usb_serial_port *port = urb->context;
438 unsigned char *data = urb->transfer_buffer;
444 if (urb->actual_length < 3) {
445 dev_err(&port->dev, "short message received: %d\n",
451 if (len != urb->actual_length) {
452 dev_err(&port->dev, "malformed message received: %d (%d)\n",
453 urb->actual_length, len);
457 /* bulk-in data: [LEN][Data.....][LSR] */
459 tty_flag = f81232_handle_lsr(port, lsr);
462 for (i = 1; i < len - 1; ++i) {
463 if (!usb_serial_handle_sysrq_char(port, data[i])) {
464 tty_insert_flip_char(&port->port, data[i],
469 tty_insert_flip_string_fixed_flag(&port->port, &data[1],
473 tty_flip_buffer_push(&port->port);
476 static void f81232_break_ctl(struct tty_struct *tty, int break_state)
478 struct usb_serial_port *port = tty->driver_data;
479 struct f81232_private *priv = usb_get_serial_port_data(port);
482 mutex_lock(&priv->lock);
485 priv->shadow_lcr |= UART_LCR_SBC;
487 priv->shadow_lcr &= ~UART_LCR_SBC;
489 status = f81232_set_register(port, LINE_CONTROL_REGISTER,
492 dev_err(&port->dev, "set break failed: %d\n", status);
494 mutex_unlock(&priv->lock);
497 static int f81232_find_clk(speed_t baudrate)
501 for (idx = 0; idx < ARRAY_SIZE(baudrate_table); ++idx) {
502 if (baudrate <= baudrate_table[idx] &&
503 baudrate_table[idx] % baudrate == 0)
510 static void f81232_set_baudrate(struct tty_struct *tty,
511 struct usb_serial_port *port, speed_t baudrate,
512 speed_t old_baudrate)
514 struct f81232_private *priv = usb_get_serial_port_data(port);
520 speed_t baud_list[] = { baudrate, old_baudrate, F81232_DEF_BAUDRATE };
522 for (i = 0; i < ARRAY_SIZE(baud_list); ++i) {
523 baudrate = baud_list[i];
525 tty_encode_baud_rate(tty, 0, 0);
529 idx = f81232_find_clk(baudrate);
531 tty_encode_baud_rate(tty, baudrate, baudrate);
539 priv->baud_base = baudrate_table[idx];
540 divisor = calc_baud_divisor(baudrate, priv->baud_base);
542 status = f81232_set_mask_register(port, F81232_CLK_REGISTER,
543 F81232_CLK_MASK, clock_table[idx]);
545 dev_err(&port->dev, "%s failed to set CLK_REG: %d\n",
550 status = f81232_get_register(port, LINE_CONTROL_REGISTER,
553 dev_err(&port->dev, "%s failed to get LCR: %d\n",
558 status = f81232_set_register(port, LINE_CONTROL_REGISTER,
559 lcr | UART_LCR_DLAB); /* Enable DLAB */
561 dev_err(&port->dev, "%s failed to set DLAB: %d\n",
566 status = f81232_set_register(port, RECEIVE_BUFFER_REGISTER,
567 divisor & 0x00ff); /* low */
569 dev_err(&port->dev, "%s failed to set baudrate MSB: %d\n",
574 status = f81232_set_register(port, INTERRUPT_ENABLE_REGISTER,
575 (divisor & 0xff00) >> 8); /* high */
577 dev_err(&port->dev, "%s failed to set baudrate LSB: %d\n",
582 status = f81232_set_register(port, LINE_CONTROL_REGISTER,
583 lcr & ~UART_LCR_DLAB);
585 dev_err(&port->dev, "%s failed to set DLAB: %d\n",
590 static int f81232_port_enable(struct usb_serial_port *port)
595 /* fifo on, trigger8, clear TX/RX*/
596 val = UART_FCR_TRIGGER_8 | UART_FCR_ENABLE_FIFO | UART_FCR_CLEAR_RCVR |
599 status = f81232_set_register(port, FIFO_CONTROL_REGISTER, val);
601 dev_err(&port->dev, "%s failed to set FCR: %d\n",
606 /* MSR Interrupt only, LSR will read from Bulk-in odd byte */
607 status = f81232_set_register(port, INTERRUPT_ENABLE_REGISTER,
610 dev_err(&port->dev, "%s failed to set IER: %d\n",
618 static int f81232_port_disable(struct usb_serial_port *port)
622 status = f81232_set_register(port, INTERRUPT_ENABLE_REGISTER, 0);
624 dev_err(&port->dev, "%s failed to set IER: %d\n",
632 static void f81232_set_termios(struct tty_struct *tty,
633 struct usb_serial_port *port, struct ktermios *old_termios)
635 struct f81232_private *priv = usb_get_serial_port_data(port);
641 /* Don't change anything if nothing has changed */
642 if (old_termios && !tty_termios_hw_change(&tty->termios, old_termios))
645 if (C_BAUD(tty) == B0)
646 f81232_set_mctrl(port, 0, TIOCM_DTR | TIOCM_RTS);
647 else if (old_termios && (old_termios->c_cflag & CBAUD) == B0)
648 f81232_set_mctrl(port, TIOCM_DTR | TIOCM_RTS, 0);
650 baudrate = tty_get_baud_rate(tty);
653 old_baud = tty_termios_baud_rate(old_termios);
655 old_baud = F81232_DEF_BAUDRATE;
657 f81232_set_baudrate(tty, port, baudrate, old_baud);
661 new_lcr |= UART_LCR_PARITY;
664 new_lcr |= UART_LCR_EPAR;
667 new_lcr |= UART_LCR_SPAR;
671 new_lcr |= UART_LCR_STOP;
673 switch (C_CSIZE(tty)) {
675 new_lcr |= UART_LCR_WLEN5;
678 new_lcr |= UART_LCR_WLEN6;
681 new_lcr |= UART_LCR_WLEN7;
685 new_lcr |= UART_LCR_WLEN8;
689 mutex_lock(&priv->lock);
691 new_lcr |= (priv->shadow_lcr & UART_LCR_SBC);
692 status = f81232_set_register(port, LINE_CONTROL_REGISTER, new_lcr);
694 dev_err(&port->dev, "%s failed to set LCR: %d\n",
698 priv->shadow_lcr = new_lcr;
700 mutex_unlock(&priv->lock);
703 static int f81232_tiocmget(struct tty_struct *tty)
706 struct usb_serial_port *port = tty->driver_data;
707 struct f81232_private *port_priv = usb_get_serial_port_data(port);
710 /* force get current MSR changed state */
711 f81232_read_msr(port);
713 mutex_lock(&port_priv->lock);
714 mcr = port_priv->modem_control;
715 msr = port_priv->modem_status;
716 mutex_unlock(&port_priv->lock);
718 r = (mcr & UART_MCR_DTR ? TIOCM_DTR : 0) |
719 (mcr & UART_MCR_RTS ? TIOCM_RTS : 0) |
720 (msr & UART_MSR_CTS ? TIOCM_CTS : 0) |
721 (msr & UART_MSR_DCD ? TIOCM_CAR : 0) |
722 (msr & UART_MSR_RI ? TIOCM_RI : 0) |
723 (msr & UART_MSR_DSR ? TIOCM_DSR : 0);
728 static int f81232_tiocmset(struct tty_struct *tty,
729 unsigned int set, unsigned int clear)
731 struct usb_serial_port *port = tty->driver_data;
733 return f81232_set_mctrl(port, set, clear);
736 static int f81232_open(struct tty_struct *tty, struct usb_serial_port *port)
740 result = f81232_port_enable(port);
746 f81232_set_termios(tty, port, NULL);
748 result = usb_submit_urb(port->interrupt_in_urb, GFP_KERNEL);
750 dev_err(&port->dev, "%s - failed submitting interrupt urb,"
751 " error %d\n", __func__, result);
755 result = usb_serial_generic_open(tty, port);
757 usb_kill_urb(port->interrupt_in_urb);
764 static int f81534a_open(struct tty_struct *tty, struct usb_serial_port *port)
770 val = F81534A_TRIGGER_MULTIPLE_4X | F81534A_FIFO_128BYTE;
771 mask = F81534A_TRIGGER_MASK | F81534A_FIFO_128BYTE;
773 status = f81232_set_mask_register(port, F81534A_MODE_REG, mask, val);
775 dev_err(&port->dev, "failed to set MODE_REG: %d\n", status);
779 return f81232_open(tty, port);
782 static void f81232_close(struct usb_serial_port *port)
784 struct f81232_private *port_priv = usb_get_serial_port_data(port);
786 f81232_port_disable(port);
787 usb_serial_generic_close(port);
788 usb_kill_urb(port->interrupt_in_urb);
789 flush_work(&port_priv->interrupt_work);
790 flush_work(&port_priv->lsr_work);
793 static void f81232_dtr_rts(struct usb_serial_port *port, int on)
796 f81232_set_mctrl(port, TIOCM_DTR | TIOCM_RTS, 0);
798 f81232_set_mctrl(port, 0, TIOCM_DTR | TIOCM_RTS);
801 static bool f81232_tx_empty(struct usb_serial_port *port)
806 status = f81232_get_register(port, LINE_STATUS_REGISTER, &tmp);
808 if ((tmp & UART_LSR_TEMT) != UART_LSR_TEMT)
815 static int f81232_carrier_raised(struct usb_serial_port *port)
818 struct f81232_private *priv = usb_get_serial_port_data(port);
820 mutex_lock(&priv->lock);
821 msr = priv->modem_status;
822 mutex_unlock(&priv->lock);
824 if (msr & UART_MSR_DCD)
829 static int f81232_get_serial_info(struct tty_struct *tty,
830 struct serial_struct *ss)
832 struct usb_serial_port *port = tty->driver_data;
833 struct f81232_private *priv = usb_get_serial_port_data(port);
835 ss->type = PORT_16550A;
836 ss->line = port->minor;
837 ss->port = port->port_number;
838 ss->baud_base = priv->baud_base;
842 static void f81232_interrupt_work(struct work_struct *work)
844 struct f81232_private *priv =
845 container_of(work, struct f81232_private, interrupt_work);
847 f81232_read_msr(priv->port);
850 static void f81232_lsr_worker(struct work_struct *work)
852 struct f81232_private *priv;
853 struct usb_serial_port *port;
857 priv = container_of(work, struct f81232_private, lsr_work);
860 status = f81232_get_register(port, LINE_STATUS_REGISTER, &tmp);
862 dev_warn(&port->dev, "read LSR failed: %d\n", status);
865 static int f81534a_ctrl_set_register(struct usb_interface *intf, u16 reg,
868 struct usb_device *dev = interface_to_usbdev(intf);
869 int retry = F81534A_ACCESS_REG_RETRY;
873 tmp = kmemdup(val, size, GFP_KERNEL);
878 status = usb_control_msg(dev,
879 usb_sndctrlpipe(dev, 0),
880 F81232_REGISTER_REQUEST,
886 USB_CTRL_SET_TIMEOUT);
888 status = usb_translate_errors(status);
891 } else if (status != size) {
892 /* Retry on short transfers */
903 dev_err(&intf->dev, "failed to set register 0x%x: %d\n",
911 static int f81534a_ctrl_enable_all_ports(struct usb_interface *intf, bool en)
913 unsigned char enable[2] = {0};
917 * Enable all available serial ports, define as following:
918 * bit 15 : Reset behavior (when HUB got soft reset)
919 * 0: maintain all serial port enabled state.
920 * 1: disable all serial port.
921 * bit 0~11 : Serial port enable bit.
928 status = f81534a_ctrl_set_register(intf, F81534A_CTRL_CMD_ENABLE_PORT,
929 sizeof(enable), enable);
931 dev_err(&intf->dev, "failed to enable ports: %d\n", status);
936 static int f81534a_ctrl_probe(struct usb_interface *intf,
937 const struct usb_device_id *id)
939 return f81534a_ctrl_enable_all_ports(intf, true);
942 static void f81534a_ctrl_disconnect(struct usb_interface *intf)
944 f81534a_ctrl_enable_all_ports(intf, false);
947 static int f81534a_ctrl_resume(struct usb_interface *intf)
949 return f81534a_ctrl_enable_all_ports(intf, true);
952 static int f81232_port_probe(struct usb_serial_port *port)
954 struct f81232_private *priv;
956 priv = devm_kzalloc(&port->dev, sizeof(*priv), GFP_KERNEL);
960 mutex_init(&priv->lock);
961 INIT_WORK(&priv->interrupt_work, f81232_interrupt_work);
962 INIT_WORK(&priv->lsr_work, f81232_lsr_worker);
964 usb_set_serial_port_data(port, priv);
966 port->port.drain_delay = 256;
972 static int f81534a_port_probe(struct usb_serial_port *port)
976 /* tri-state with pull-high, default RS232 Mode */
977 status = f81232_set_register(port, F81534A_GPIO_REG,
978 F81534A_GPIO_MODE2_DIR);
982 return f81232_port_probe(port);
985 static int f81232_suspend(struct usb_serial *serial, pm_message_t message)
987 struct usb_serial_port *port = serial->port[0];
988 struct f81232_private *port_priv = usb_get_serial_port_data(port);
991 for (i = 0; i < ARRAY_SIZE(port->read_urbs); ++i)
992 usb_kill_urb(port->read_urbs[i]);
994 usb_kill_urb(port->interrupt_in_urb);
997 flush_work(&port_priv->interrupt_work);
998 flush_work(&port_priv->lsr_work);
1004 static int f81232_resume(struct usb_serial *serial)
1006 struct usb_serial_port *port = serial->port[0];
1009 if (tty_port_initialized(&port->port)) {
1010 result = usb_submit_urb(port->interrupt_in_urb, GFP_NOIO);
1012 dev_err(&port->dev, "submit interrupt urb failed: %d\n",
1018 return usb_serial_generic_resume(serial);
1021 static struct usb_serial_driver f81232_device = {
1023 .owner = THIS_MODULE,
1026 .id_table = f81232_id_table,
1028 .bulk_in_size = 256,
1029 .bulk_out_size = 256,
1030 .open = f81232_open,
1031 .close = f81232_close,
1032 .dtr_rts = f81232_dtr_rts,
1033 .carrier_raised = f81232_carrier_raised,
1034 .get_serial = f81232_get_serial_info,
1035 .break_ctl = f81232_break_ctl,
1036 .set_termios = f81232_set_termios,
1037 .tiocmget = f81232_tiocmget,
1038 .tiocmset = f81232_tiocmset,
1039 .tiocmiwait = usb_serial_generic_tiocmiwait,
1040 .tx_empty = f81232_tx_empty,
1041 .process_read_urb = f81232_process_read_urb,
1042 .read_int_callback = f81232_read_int_callback,
1043 .port_probe = f81232_port_probe,
1044 .suspend = f81232_suspend,
1045 .resume = f81232_resume,
1048 static struct usb_serial_driver f81534a_device = {
1050 .owner = THIS_MODULE,
1053 .id_table = f81534a_id_table,
1055 .open = f81534a_open,
1056 .close = f81232_close,
1057 .dtr_rts = f81232_dtr_rts,
1058 .carrier_raised = f81232_carrier_raised,
1059 .get_serial = f81232_get_serial_info,
1060 .break_ctl = f81232_break_ctl,
1061 .set_termios = f81232_set_termios,
1062 .tiocmget = f81232_tiocmget,
1063 .tiocmset = f81232_tiocmset,
1064 .tiocmiwait = usb_serial_generic_tiocmiwait,
1065 .tx_empty = f81232_tx_empty,
1066 .process_read_urb = f81534a_process_read_urb,
1067 .read_int_callback = f81232_read_int_callback,
1068 .port_probe = f81534a_port_probe,
1069 .suspend = f81232_suspend,
1070 .resume = f81232_resume,
1073 static struct usb_serial_driver * const serial_drivers[] = {
1079 static struct usb_driver f81534a_ctrl_driver = {
1080 .name = "f81534a_ctrl",
1081 .id_table = f81534a_ctrl_id_table,
1082 .probe = f81534a_ctrl_probe,
1083 .disconnect = f81534a_ctrl_disconnect,
1084 .resume = f81534a_ctrl_resume,
1087 static int __init f81232_init(void)
1091 status = usb_register_driver(&f81534a_ctrl_driver, THIS_MODULE,
1096 status = usb_serial_register_drivers(serial_drivers, KBUILD_MODNAME,
1099 usb_deregister(&f81534a_ctrl_driver);
1106 static void __exit f81232_exit(void)
1108 usb_serial_deregister_drivers(serial_drivers);
1109 usb_deregister(&f81534a_ctrl_driver);
1112 module_init(f81232_init);
1113 module_exit(f81232_exit);
1115 MODULE_DESCRIPTION("Fintek F81232/532A/534A/535/536 USB to serial driver");
1116 MODULE_AUTHOR("Greg Kroah-Hartman <gregkh@linuxfoundation.org>");
1117 MODULE_AUTHOR("Peter Hong <peter_hong@fintek.com.tw>");
1118 MODULE_LICENSE("GPL v2");