[deliverable/linux.git] / drivers / usb / serial / spcp8x5.c

/*
 * spcp8x5 USB to serial adaptor driver
 *
 * Copyright (C) 2010-2013 Johan Hovold (jhovold@gmail.com)
 * Copyright (C) 2006 Linxb (xubin.lin@worldplus.com.cn)
 * Copyright (C) 2006 S1 Corp.
 *
 * Original driver for 2.6.10 pl2303 driver by
 *   Greg Kroah-Hartman (greg@kroah.com)
 * Changes for 2.6.20 by Harald Klein <hari@vt100.at>
 *
 *	This program is free software; you can redistribute it and/or modify
 *	it under the terms of the GNU General Public License as published by
 *	the Free Software Foundation; either version 2 of the License, or
 *	(at your option) any later version.
 */
#include <linux/kernel.h>
#include <linux/errno.h>
#include <linux/slab.h>
#include <linux/tty.h>
#include <linux/tty_driver.h>
#include <linux/tty_flip.h>
#include <linux/module.h>
#include <linux/spinlock.h>
#include <linux/usb.h>
#include <linux/usb/serial.h>

#define DRIVER_DESC	"SPCP8x5 USB to serial adaptor driver"

#define SPCP825_QUIRK_NO_UART_STATUS	0x01
#define SPCP825_QUIRK_NO_WORK_MODE	0x02

#define SPCP8x5_007_VID		0x04FC
#define SPCP8x5_007_PID		0x0201
#define SPCP8x5_008_VID		0x04fc
#define SPCP8x5_008_PID		0x0235
#define SPCP8x5_PHILIPS_VID	0x0471
#define SPCP8x5_PHILIPS_PID	0x081e
#define SPCP8x5_INTERMATIC_VID	0x04FC
#define SPCP8x5_INTERMATIC_PID	0x0204
#define SPCP8x5_835_VID		0x04fc
#define SPCP8x5_835_PID		0x0231

static const struct usb_device_id id_table[] = {
	{ USB_DEVICE(SPCP8x5_PHILIPS_VID , SPCP8x5_PHILIPS_PID)},
	{ USB_DEVICE(SPCP8x5_INTERMATIC_VID, SPCP8x5_INTERMATIC_PID)},
	{ USB_DEVICE(SPCP8x5_835_VID, SPCP8x5_835_PID)},
	{ USB_DEVICE(SPCP8x5_008_VID, SPCP8x5_008_PID)},
	{ USB_DEVICE(SPCP8x5_007_VID, SPCP8x5_007_PID),
	  .driver_info = SPCP825_QUIRK_NO_UART_STATUS |
				SPCP825_QUIRK_NO_WORK_MODE },
	{ }					/* Terminating entry */
};
MODULE_DEVICE_TABLE(usb, id_table);

struct spcp8x5_usb_ctrl_arg {
	u8	type;
	u8	cmd;
	u8	cmd_type;
	u16	value;
	u16	index;
	u16	length;
};


/* spcp8x5 spec register define */
#define MCR_CONTROL_LINE_RTS		0x02
#define MCR_CONTROL_LINE_DTR		0x01
#define MCR_DTR				0x01
#define MCR_RTS				0x02

#define MSR_STATUS_LINE_DCD		0x80
#define MSR_STATUS_LINE_RI		0x40
#define MSR_STATUS_LINE_DSR		0x20
#define MSR_STATUS_LINE_CTS		0x10

/* verdor command here , we should define myself */
#define SET_DEFAULT			0x40
#define SET_DEFAULT_TYPE		0x20

#define SET_UART_FORMAT			0x40
#define SET_UART_FORMAT_TYPE		0x21
#define SET_UART_FORMAT_SIZE_5		0x00
#define SET_UART_FORMAT_SIZE_6		0x01
#define SET_UART_FORMAT_SIZE_7		0x02
#define SET_UART_FORMAT_SIZE_8		0x03
#define SET_UART_FORMAT_STOP_1		0x00
#define SET_UART_FORMAT_STOP_2		0x04
#define SET_UART_FORMAT_PAR_NONE	0x00
#define SET_UART_FORMAT_PAR_ODD		0x10
#define SET_UART_FORMAT_PAR_EVEN	0x30
#define SET_UART_FORMAT_PAR_MASK	0xD0
#define SET_UART_FORMAT_PAR_SPACE	0x90

#define GET_UART_STATUS_TYPE		0xc0
#define GET_UART_STATUS			0x22
#define GET_UART_STATUS_MSR		0x06

#define SET_UART_STATUS			0x40
#define SET_UART_STATUS_TYPE		0x23
#define SET_UART_STATUS_MCR		0x0004
#define SET_UART_STATUS_MCR_DTR		0x01
#define SET_UART_STATUS_MCR_RTS		0x02
#define SET_UART_STATUS_MCR_LOOP	0x10

#define SET_WORKING_MODE		0x40
#define SET_WORKING_MODE_TYPE		0x24
#define SET_WORKING_MODE_U2C		0x00
#define SET_WORKING_MODE_RS485		0x01
#define SET_WORKING_MODE_PDMA		0x02
#define SET_WORKING_MODE_SPP		0x03

#define SET_FLOWCTL_CHAR		0x40
#define SET_FLOWCTL_CHAR_TYPE		0x25

#define GET_VERSION			0xc0
#define GET_VERSION_TYPE		0x26

#define SET_REGISTER			0x40
#define SET_REGISTER_TYPE		0x27

#define	GET_REGISTER			0xc0
#define GET_REGISTER_TYPE		0x28

#define SET_RAM				0x40
#define SET_RAM_TYPE			0x31

#define GET_RAM				0xc0
#define GET_RAM_TYPE			0x32

/* how come ??? */
#define UART_STATE			0x08
#define UART_STATE_TRANSIENT_MASK	0x75
#define UART_DCD			0x01
#define UART_DSR			0x02
#define UART_BREAK_ERROR		0x04
#define UART_RING			0x08
#define UART_FRAME_ERROR		0x10
#define UART_PARITY_ERROR		0x20
#define UART_OVERRUN_ERROR		0x40
#define UART_CTS			0x80

struct spcp8x5_private {
	unsigned		quirks;
	spinlock_t		lock;
	u8			line_control;
};

static int spcp8x5_probe(struct usb_serial *serial,
						const struct usb_device_id *id)
{
	usb_set_serial_data(serial, (void *)id);

	return 0;
}

static int spcp8x5_port_probe(struct usb_serial_port *port)
{
	const struct usb_device_id *id = usb_get_serial_data(port->serial);
	struct spcp8x5_private *priv;

	priv = kzalloc(sizeof(*priv), GFP_KERNEL);
	if (!priv)
		return -ENOMEM;

	spin_lock_init(&priv->lock);
	priv->quirks = id->driver_info;

	usb_set_serial_port_data(port, priv);

	port->port.drain_delay = 256;

	return 0;
}

static int spcp8x5_port_remove(struct usb_serial_port *port)
{
	struct spcp8x5_private *priv;

	priv = usb_get_serial_port_data(port);
	kfree(priv);

	return 0;
}

static int spcp8x5_set_ctrl_line(struct usb_serial_port *port, u8 mcr)
{
	struct spcp8x5_private *priv = usb_get_serial_port_data(port);
	struct usb_device *dev = port->serial->dev;
	int retval;

	if (priv->quirks & SPCP825_QUIRK_NO_UART_STATUS)
		return -EPERM;

	retval = usb_control_msg(dev, usb_sndctrlpipe(dev, 0),
				 SET_UART_STATUS_TYPE, SET_UART_STATUS,
				 mcr, 0x04, NULL, 0, 100);
	if (retval != 0) {
		dev_err(&port->dev, "failed to set control lines: %d\n",
								retval);
	}
	return retval;
}

static int spcp8x5_get_msr(struct usb_serial_port *port, u8 *status)
{
	struct spcp8x5_private *priv = usb_get_serial_port_data(port);
	struct usb_device *dev = port->serial->dev;
	u8 *buf;
	int ret;

	if (priv->quirks & SPCP825_QUIRK_NO_UART_STATUS)
		return -EPERM;

	buf = kzalloc(1, GFP_KERNEL);
	if (!buf)
		return -ENOMEM;

	ret = usb_control_msg(dev, usb_rcvctrlpipe(dev, 0),
			      GET_UART_STATUS, GET_UART_STATUS_TYPE,
			      0, GET_UART_STATUS_MSR, buf, 1, 100);
	if (ret < 0)
		dev_err(&port->dev, "failed to get modem status: %d\n", ret);

	dev_dbg(&port->dev, "0xc0:0x22:0:6  %d - 0x02%x\n", ret, *buf);
	*status = *buf;
	kfree(buf);

	return ret;
}

static void spcp8x5_set_work_mode(struct usb_serial_port *port, u16 value,
								 u16 index)
{
	struct spcp8x5_private *priv = usb_get_serial_port_data(port);
	struct usb_device *dev = port->serial->dev;
	int ret;

	if (priv->quirks & SPCP825_QUIRK_NO_WORK_MODE)
		return;

	ret = usb_control_msg(dev, usb_sndctrlpipe(dev, 0),
			      SET_WORKING_MODE_TYPE, SET_WORKING_MODE,
			      value, index, NULL, 0, 100);
	dev_dbg(&port->dev, "value = %#x , index = %#x\n", value, index);
	if (ret < 0)
		dev_err(&port->dev, "failed to set work mode: %d\n", ret);
}

static int spcp8x5_carrier_raised(struct usb_serial_port *port)
{
	u8 msr;
	int ret;

	ret = spcp8x5_get_msr(port, &msr);
	if (ret || msr & MSR_STATUS_LINE_DCD)
		return 1;

	return 0;
}

static void spcp8x5_dtr_rts(struct usb_serial_port *port, int on)
{
	struct spcp8x5_private *priv = usb_get_serial_port_data(port);
	unsigned long flags;
	u8 control;

	spin_lock_irqsave(&priv->lock, flags);
	if (on)
		priv->line_control = MCR_CONTROL_LINE_DTR
						| MCR_CONTROL_LINE_RTS;
	else
		priv->line_control &= ~ (MCR_CONTROL_LINE_DTR
						| MCR_CONTROL_LINE_RTS);
	control = priv->line_control;
	spin_unlock_irqrestore(&priv->lock, flags);
	spcp8x5_set_ctrl_line(port, control);
}

static void spcp8x5_init_termios(struct tty_struct *tty)
{
	tty->termios = tty_std_termios;
	tty->termios.c_cflag = B115200 | CS8 | CREAD | HUPCL | CLOCAL;
	tty->termios.c_ispeed = 115200;
	tty->termios.c_ospeed = 115200;
}

static void spcp8x5_set_termios(struct tty_struct *tty,
		struct usb_serial_port *port, struct ktermios *old_termios)
{
	struct usb_serial *serial = port->serial;
	struct spcp8x5_private *priv = usb_get_serial_port_data(port);
	unsigned long flags;
	unsigned int cflag = tty->termios.c_cflag;
	unsigned short uartdata;
	unsigned char buf[2] = {0, 0};
	int baud;
	int i;
	u8 control;

	/* check that they really want us to change something */
	if (old_termios && !tty_termios_hw_change(&tty->termios, old_termios))
		return;

	/* set DTR/RTS active */
	spin_lock_irqsave(&priv->lock, flags);
	control = priv->line_control;
	if (old_termios && (old_termios->c_cflag & CBAUD) == B0) {
		priv->line_control |= MCR_DTR;
		if (!(old_termios->c_cflag & CRTSCTS))
			priv->line_control |= MCR_RTS;
	}
	if (control != priv->line_control) {
		control = priv->line_control;
		spin_unlock_irqrestore(&priv->lock, flags);
		spcp8x5_set_ctrl_line(port, control);
	} else {
		spin_unlock_irqrestore(&priv->lock, flags);
	}

	/* Set Baud Rate */
	baud = tty_get_baud_rate(tty);
	switch (baud) {
	case 300:	buf[0] = 0x00;	break;
	case 600:	buf[0] = 0x01;	break;
	case 1200:	buf[0] = 0x02;	break;
	case 2400:	buf[0] = 0x03;	break;
	case 4800:	buf[0] = 0x04;	break;
	case 9600:	buf[0] = 0x05;	break;
	case 19200:	buf[0] = 0x07;	break;
	case 38400:	buf[0] = 0x09;	break;
	case 57600:	buf[0] = 0x0a;	break;
	case 115200:	buf[0] = 0x0b;	break;
	case 230400:	buf[0] = 0x0c;	break;
	case 460800:	buf[0] = 0x0d;	break;
	case 921600:	buf[0] = 0x0e;	break;
/*	case 1200000:	buf[0] = 0x0f;	break; */
/*	case 2400000:	buf[0] = 0x10;	break; */
	case 3000000:	buf[0] = 0x11;	break;
/*	case 6000000:	buf[0] = 0x12;	break; */
	case 0:
	case 1000000:
			buf[0] = 0x0b;	break;
	default:
		dev_err(&port->dev, "unsupported baudrate, using 9600\n");
	}

	/* Set Data Length : 00:5bit, 01:6bit, 10:7bit, 11:8bit */
	switch (cflag & CSIZE) {
	case CS5:
		buf[1] |= SET_UART_FORMAT_SIZE_5;
		break;
	case CS6:
		buf[1] |= SET_UART_FORMAT_SIZE_6;
		break;
	case CS7:
		buf[1] |= SET_UART_FORMAT_SIZE_7;
		break;
	default:
	case CS8:
		buf[1] |= SET_UART_FORMAT_SIZE_8;
		break;
	}

	/* Set Stop bit2 : 0:1bit 1:2bit */
	buf[1] |= (cflag & CSTOPB) ? SET_UART_FORMAT_STOP_2 :
				     SET_UART_FORMAT_STOP_1;

	/* Set Parity bit3-4 01:Odd 11:Even */
	if (cflag & PARENB) {
		buf[1] |= (cflag & PARODD) ?
		SET_UART_FORMAT_PAR_ODD : SET_UART_FORMAT_PAR_EVEN ;
	} else {
		buf[1] |= SET_UART_FORMAT_PAR_NONE;
	}
	uartdata = buf[0] | buf[1]<<8;

	i = usb_control_msg(serial->dev, usb_sndctrlpipe(serial->dev, 0),
			    SET_UART_FORMAT_TYPE, SET_UART_FORMAT,
			    uartdata, 0, NULL, 0, 100);
	if (i < 0)
		dev_err(&port->dev, "Set UART format %#x failed (error = %d)\n",
			uartdata, i);
	dev_dbg(&port->dev, "0x21:0x40:0:0  %d\n", i);

	if (cflag & CRTSCTS) {
		/* enable hardware flow control */
		spcp8x5_set_work_mode(port, 0x000a, SET_WORKING_MODE_U2C);
	}
}

static int spcp8x5_open(struct tty_struct *tty, struct usb_serial_port *port)
{
	struct usb_serial *serial = port->serial;
	struct spcp8x5_private *priv = usb_get_serial_port_data(port);
	int ret;

	usb_clear_halt(serial->dev, port->write_urb->pipe);
	usb_clear_halt(serial->dev, port->read_urb->pipe);

	ret = usb_control_msg(serial->dev, usb_sndctrlpipe(serial->dev, 0),
			      0x09, 0x00,
			      0x01, 0x00, NULL, 0x00, 100);
	if (ret)
		return ret;

	spcp8x5_set_ctrl_line(port, priv->line_control);

	if (tty)
		spcp8x5_set_termios(tty, port, NULL);

	return usb_serial_generic_open(tty, port);
}

static int spcp8x5_tiocmset(struct tty_struct *tty,
			    unsigned int set, unsigned int clear)
{
	struct usb_serial_port *port = tty->driver_data;
	struct spcp8x5_private *priv = usb_get_serial_port_data(port);
	unsigned long flags;
	u8 control;

	spin_lock_irqsave(&priv->lock, flags);
	if (set & TIOCM_RTS)
		priv->line_control |= MCR_RTS;
	if (set & TIOCM_DTR)
		priv->line_control |= MCR_DTR;
	if (clear & TIOCM_RTS)
		priv->line_control &= ~MCR_RTS;
	if (clear & TIOCM_DTR)
		priv->line_control &= ~MCR_DTR;
	control = priv->line_control;
	spin_unlock_irqrestore(&priv->lock, flags);

	return spcp8x5_set_ctrl_line(port, control);
}

static int spcp8x5_tiocmget(struct tty_struct *tty)
{
	struct usb_serial_port *port = tty->driver_data;
	struct spcp8x5_private *priv = usb_get_serial_port_data(port);
	unsigned long flags;
	unsigned int mcr;
	u8 status;
	unsigned int result;

	result = spcp8x5_get_msr(port, &status);
	if (result)
		return result;

	spin_lock_irqsave(&priv->lock, flags);
	mcr = priv->line_control;
	spin_unlock_irqrestore(&priv->lock, flags);

	result = ((mcr & MCR_DTR)			? TIOCM_DTR : 0)
		  | ((mcr & MCR_RTS)			? TIOCM_RTS : 0)
		  | ((status & MSR_STATUS_LINE_CTS)	? TIOCM_CTS : 0)
		  | ((status & MSR_STATUS_LINE_DSR)	? TIOCM_DSR : 0)
		  | ((status & MSR_STATUS_LINE_RI)	? TIOCM_RI  : 0)
		  | ((status & MSR_STATUS_LINE_DCD)	? TIOCM_CD  : 0);

	return result;
}

static struct usb_serial_driver spcp8x5_device = {
	.driver = {
		.owner =	THIS_MODULE,
		.name =		"SPCP8x5",
	},
	.id_table		= id_table,
	.num_ports		= 1,
	.open			= spcp8x5_open,
	.dtr_rts		= spcp8x5_dtr_rts,
	.carrier_raised		= spcp8x5_carrier_raised,
	.set_termios		= spcp8x5_set_termios,
	.init_termios		= spcp8x5_init_termios,
	.tiocmget		= spcp8x5_tiocmget,
	.tiocmset		= spcp8x5_tiocmset,
	.probe			= spcp8x5_probe,
	.port_probe		= spcp8x5_port_probe,
	.port_remove		= spcp8x5_port_remove,
};

static struct usb_serial_driver * const serial_drivers[] = {
	&spcp8x5_device, NULL
};

module_usb_serial_driver(serial_drivers, id_table);

MODULE_DESCRIPTION(DRIVER_DESC);
MODULE_LICENSE("GPL");
Commit	Line	Data
619a6f1d GKH	1	/*
	2	* spcp8x5 USB to serial adaptor driver
	3	*
e1ed212d	4	* Copyright (C) 2010-2013 Johan Hovold (jhovold@gmail.com)
619a6f1d GKH	5	* Copyright (C) 2006 Linxb (xubin.lin@worldplus.com.cn)
	6	* Copyright (C) 2006 S1 Corp.
	7	*
	8	* Original driver for 2.6.10 pl2303 driver by
	9	* Greg Kroah-Hartman (greg@kroah.com)
	10	* Changes for 2.6.20 by Harald Klein <hari@vt100.at>
	11	*
	12	* This program is free software; you can redistribute it and/or modify
	13	* it under the terms of the GNU General Public License as published by
	14	* the Free Software Foundation; either version 2 of the License, or
	15	* (at your option) any later version.
619a6f1d GKH	16	*/
	17	#include <linux/kernel.h>
	18	#include <linux/errno.h>
619a6f1d GKH	19	#include <linux/slab.h>
	20	#include <linux/tty.h>
	21	#include <linux/tty_driver.h>
	22	#include <linux/tty_flip.h>
	23	#include <linux/module.h>
	24	#include <linux/spinlock.h>
	25	#include <linux/usb.h>
	26	#include <linux/usb/serial.h>
	27
2d816ac6	28	#define DRIVER_DESC "SPCP8x5 USB to serial adaptor driver"
619a6f1d	29
4d63143d JH	30	#define SPCP825_QUIRK_NO_UART_STATUS 0x01
	31	#define SPCP825_QUIRK_NO_WORK_MODE 0x02
	32
619a6f1d GKH	33	#define SPCP8x5_007_VID 0x04FC
	34	#define SPCP8x5_007_PID 0x0201
	35	#define SPCP8x5_008_VID 0x04fc
	36	#define SPCP8x5_008_PID 0x0235
	37	#define SPCP8x5_PHILIPS_VID 0x0471
	38	#define SPCP8x5_PHILIPS_PID 0x081e
	39	#define SPCP8x5_INTERMATIC_VID 0x04FC
	40	#define SPCP8x5_INTERMATIC_PID 0x0204
	41	#define SPCP8x5_835_VID 0x04fc
	42	#define SPCP8x5_835_PID 0x0231
	43
7d40d7e8	44	static const struct usb_device_id id_table[] = {
619a6f1d GKH	45	{ USB_DEVICE(SPCP8x5_PHILIPS_VID , SPCP8x5_PHILIPS_PID)},
	46	{ USB_DEVICE(SPCP8x5_INTERMATIC_VID, SPCP8x5_INTERMATIC_PID)},
	47	{ USB_DEVICE(SPCP8x5_835_VID, SPCP8x5_835_PID)},
	48	{ USB_DEVICE(SPCP8x5_008_VID, SPCP8x5_008_PID)},
4d63143d JH	49	{ USB_DEVICE(SPCP8x5_007_VID, SPCP8x5_007_PID),
	50	.driver_info = SPCP825_QUIRK_NO_UART_STATUS \|
	51	SPCP825_QUIRK_NO_WORK_MODE },
619a6f1d GKH	52	{ } /* Terminating entry */
	53	};
	54	MODULE_DEVICE_TABLE(usb, id_table);
	55
	56	struct spcp8x5_usb_ctrl_arg {
2d816ac6	57	u8 type;
619a6f1d GKH	58	u8 cmd;
	59	u8 cmd_type;
	60	u16 value;
	61	u16 index;
	62	u16 length;
	63	};
	64
619a6f1d GKH	65
	66	/* spcp8x5 spec register define */
	67	#define MCR_CONTROL_LINE_RTS 0x02
	68	#define MCR_CONTROL_LINE_DTR 0x01
	69	#define MCR_DTR 0x01
	70	#define MCR_RTS 0x02
	71
	72	#define MSR_STATUS_LINE_DCD 0x80
	73	#define MSR_STATUS_LINE_RI 0x40
	74	#define MSR_STATUS_LINE_DSR 0x20
	75	#define MSR_STATUS_LINE_CTS 0x10
	76
	77	/* verdor command here , we should define myself */
	78	#define SET_DEFAULT 0x40
	79	#define SET_DEFAULT_TYPE 0x20
	80
	81	#define SET_UART_FORMAT 0x40
	82	#define SET_UART_FORMAT_TYPE 0x21
	83	#define SET_UART_FORMAT_SIZE_5 0x00
	84	#define SET_UART_FORMAT_SIZE_6 0x01
	85	#define SET_UART_FORMAT_SIZE_7 0x02
	86	#define SET_UART_FORMAT_SIZE_8 0x03
	87	#define SET_UART_FORMAT_STOP_1 0x00
	88	#define SET_UART_FORMAT_STOP_2 0x04
	89	#define SET_UART_FORMAT_PAR_NONE 0x00
	90	#define SET_UART_FORMAT_PAR_ODD 0x10
	91	#define SET_UART_FORMAT_PAR_EVEN 0x30
	92	#define SET_UART_FORMAT_PAR_MASK 0xD0
	93	#define SET_UART_FORMAT_PAR_SPACE 0x90
	94
	95	#define GET_UART_STATUS_TYPE 0xc0
	96	#define GET_UART_STATUS 0x22
	97	#define GET_UART_STATUS_MSR 0x06
	98
	99	#define SET_UART_STATUS 0x40
	100	#define SET_UART_STATUS_TYPE 0x23
	101	#define SET_UART_STATUS_MCR 0x0004
	102	#define SET_UART_STATUS_MCR_DTR 0x01
	103	#define SET_UART_STATUS_MCR_RTS 0x02
	104	#define SET_UART_STATUS_MCR_LOOP 0x10
	105
	106	#define SET_WORKING_MODE 0x40
	107	#define SET_WORKING_MODE_TYPE 0x24
	108	#define SET_WORKING_MODE_U2C 0x00
	109	#define SET_WORKING_MODE_RS485 0x01
	110	#define SET_WORKING_MODE_PDMA 0x02
	111	#define SET_WORKING_MODE_SPP 0x03
	112
	113	#define SET_FLOWCTL_CHAR 0x40
	114	#define SET_FLOWCTL_CHAR_TYPE 0x25
	115
	116	#define GET_VERSION 0xc0
	117	#define GET_VERSION_TYPE 0x26
	118
	119	#define SET_REGISTER 0x40
	120	#define SET_REGISTER_TYPE 0x27
	121
	122	#define GET_REGISTER 0xc0
	123	#define GET_REGISTER_TYPE 0x28
	124
	125	#define SET_RAM 0x40
	126	#define SET_RAM_TYPE 0x31
	127
	128	#define GET_RAM 0xc0
129	#define GET_RAM_TYPE 0x32
130
131	/* how come ??? */
132	#define UART_STATE 0x08
d14fc1a7	133	#define UART_STATE_TRANSIENT_MASK 0x75
619a6f1d GKH	134	#define UART_DCD 0x01
	135	#define UART_DSR 0x02
	136	#define UART_BREAK_ERROR 0x04
	137	#define UART_RING 0x08
	138	#define UART_FRAME_ERROR 0x10
	139	#define UART_PARITY_ERROR 0x20
	140	#define UART_OVERRUN_ERROR 0x40
	141	#define UART_CTS 0x80
	142
619a6f1d	143	struct spcp8x5_private {
4d63143d	144	unsigned quirks;
2d816ac6	145	spinlock_t lock;
2d816ac6	146	u8 line_control;
619a6f1d GKH	147	};
619a6f1d GKH	148
4d63143d JH	149	static int spcp8x5_probe(struct usb_serial *serial,
	150	const struct usb_device_id *id)
	151	{
	152	usb_set_serial_data(serial, (void *)id);
	153
	154	return 0;
	155	}
	156
bf90ff5f	157	static int spcp8x5_port_probe(struct usb_serial_port *port)
619a6f1d	158	{
4d63143d	159	const struct usb_device_id *id = usb_get_serial_data(port->serial);
619a6f1d	160	struct spcp8x5_private *priv;
619a6f1d	161
bf90ff5f JH	162	priv = kzalloc(sizeof(*priv), GFP_KERNEL);
	163	if (!priv)
	164	return -ENOMEM;
619a6f1d	165
bf90ff5f	166	spin_lock_init(&priv->lock);
4d63143d	167	priv->quirks = id->driver_info;
bf90ff5f	168
2d816ac6	169	usb_set_serial_port_data(port, priv);
619a6f1d	170
d7be6221 JH	171	port->port.drain_delay = 256;
d7be6221 JH	172
619a6f1d	173	return 0;
619a6f1d GKH	174	}
619a6f1d GKH	175
bf90ff5f	176	static int spcp8x5_port_remove(struct usb_serial_port *port)
619a6f1d	177	{
bf90ff5f	178	struct spcp8x5_private *priv;
619a6f1d	179
bf90ff5f JH	180	priv = usb_get_serial_port_data(port);
	181	kfree(priv);
	182
	183	return 0;
619a6f1d GKH	184	}
619a6f1d GKH	185
8413d2fd	186	static int spcp8x5_set_ctrl_line(struct usb_serial_port *port, u8 mcr)
619a6f1d	187	{
8413d2fd JH	188	struct spcp8x5_private *priv = usb_get_serial_port_data(port);
8413d2fd JH	189	struct usb_device *dev = port->serial->dev;
619a6f1d	190	int retval;
619a6f1d	191
4d63143d	192	if (priv->quirks & SPCP825_QUIRK_NO_UART_STATUS)
619a6f1d GKH	193	return -EPERM;
619a6f1d GKH	194
619a6f1d GKH	195	retval = usb_control_msg(dev, usb_sndctrlpipe(dev, 0),
	196	SET_UART_STATUS_TYPE, SET_UART_STATUS,
	197	mcr, 0x04, NULL, 0, 100);
8413d2fd JH	198	if (retval != 0) {
	199	dev_err(&port->dev, "failed to set control lines: %d\n",
	200	retval);
	201	}
619a6f1d GKH	202	return retval;
	203	}
	204
8413d2fd	205	static int spcp8x5_get_msr(struct usb_serial_port port, u8 status)
619a6f1d	206	{
8413d2fd JH	207	struct spcp8x5_private *priv = usb_get_serial_port_data(port);
8413d2fd JH	208	struct usb_device *dev = port->serial->dev;
0a967f62	209	u8 *buf;
619a6f1d GKH	210	int ret;
619a6f1d GKH	211
4d63143d	212	if (priv->quirks & SPCP825_QUIRK_NO_UART_STATUS)
619a6f1d	213	return -EPERM;
619a6f1d	214
0a967f62 JH	215	buf = kzalloc(1, GFP_KERNEL);
0a967f62 JH	216	if (!buf)
619a6f1d	217	return -ENOMEM;
619a6f1d GKH	218
	219	ret = usb_control_msg(dev, usb_rcvctrlpipe(dev, 0),
	220	GET_UART_STATUS, GET_UART_STATUS_TYPE,
0a967f62	221	0, GET_UART_STATUS_MSR, buf, 1, 100);
619a6f1d	222	if (ret < 0)
d9a38a87	223	dev_err(&port->dev, "failed to get modem status: %d\n", ret);
8413d2fd	224
d9a38a87	225	dev_dbg(&port->dev, "0xc0:0x22:0:6 %d - 0x02%x\n", ret, *buf);
0a967f62 JH	226	status = buf;
0a967f62 JH	227	kfree(buf);
619a6f1d GKH	228
	229	return ret;
	230	}
	231
8413d2fd JH	232	static void spcp8x5_set_work_mode(struct usb_serial_port *port, u16 value,
8413d2fd JH	233	u16 index)
619a6f1d	234	{
8413d2fd JH	235	struct spcp8x5_private *priv = usb_get_serial_port_data(port);
8413d2fd JH	236	struct usb_device *dev = port->serial->dev;
619a6f1d GKH	237	int ret;
619a6f1d GKH	238
4d63143d	239	if (priv->quirks & SPCP825_QUIRK_NO_WORK_MODE)
619a6f1d GKH	240	return;
	241
	242	ret = usb_control_msg(dev, usb_sndctrlpipe(dev, 0),
	243	SET_WORKING_MODE_TYPE, SET_WORKING_MODE,
	244	value, index, NULL, 0, 100);
8413d2fd	245	dev_dbg(&port->dev, "value = %#x , index = %#x\n", value, index);
619a6f1d	246	if (ret < 0)
8413d2fd	247	dev_err(&port->dev, "failed to set work mode: %d\n", ret);
619a6f1d GKH	248	}
619a6f1d GKH	249
335f8514 AC	250	static int spcp8x5_carrier_raised(struct usb_serial_port *port)
335f8514 AC	251	{
e1ed212d JH	252	u8 msr;
e1ed212d JH	253	int ret;
2d816ac6	254
e1ed212d JH	255	ret = spcp8x5_get_msr(port, &msr);
e1ed212d JH	256	if (ret \|\| msr & MSR_STATUS_LINE_DCD)
335f8514	257	return 1;
2d816ac6	258
335f8514 AC	259	return 0;
	260	}
	261
	262	static void spcp8x5_dtr_rts(struct usb_serial_port *port, int on)
	263	{
	264	struct spcp8x5_private *priv = usb_get_serial_port_data(port);
	265	unsigned long flags;
	266	u8 control;
	267
	268	spin_lock_irqsave(&priv->lock, flags);
	269	if (on)
	270	priv->line_control = MCR_CONTROL_LINE_DTR
	271	\| MCR_CONTROL_LINE_RTS;
	272	else
	273	priv->line_control &= ~ (MCR_CONTROL_LINE_DTR
	274	\| MCR_CONTROL_LINE_RTS);
	275	control = priv->line_control;
	276	spin_unlock_irqrestore(&priv->lock, flags);
8413d2fd	277	spcp8x5_set_ctrl_line(port, control);
335f8514 AC	278	}
335f8514 AC	279
fe1ae7fd AC	280	static void spcp8x5_init_termios(struct tty_struct *tty)
fe1ae7fd AC	281	{
adc8d746 AC	282	tty->termios = tty_std_termios;
	283	tty->termios.c_cflag = B115200 \| CS8 \| CREAD \| HUPCL \| CLOCAL;
	284	tty->termios.c_ispeed = 115200;
	285	tty->termios.c_ospeed = 115200;
fe1ae7fd AC	286	}
fe1ae7fd AC	287
95da310e AC	288	static void spcp8x5_set_termios(struct tty_struct *tty,
95da310e AC	289	struct usb_serial_port port, struct ktermios old_termios)
619a6f1d GKH	290	{
	291	struct usb_serial *serial = port->serial;
	292	struct spcp8x5_private *priv = usb_get_serial_port_data(port);
	293	unsigned long flags;
adc8d746	294	unsigned int cflag = tty->termios.c_cflag;
619a6f1d GKH	295	unsigned short uartdata;
	296	unsigned char buf[2] = {0, 0};
	297	int baud;
	298	int i;
	299	u8 control;
	300
619a6f1d	301	/* check that they really want us to change something */
5e4211f1	302	if (old_termios && !tty_termios_hw_change(&tty->termios, old_termios))
619a6f1d GKH	303	return;
	304
	305	/* set DTR/RTS active */
	306	spin_lock_irqsave(&priv->lock, flags);
	307	control = priv->line_control;
5e4211f1	308	if (old_termios && (old_termios->c_cflag & CBAUD) == B0) {
619a6f1d	309	priv->line_control \|= MCR_DTR;
5e4211f1	310	if (!(old_termios->c_cflag & CRTSCTS))
619a6f1d GKH	311	priv->line_control \|= MCR_RTS;
	312	}
	313	if (control != priv->line_control) {
	314	control = priv->line_control;
	315	spin_unlock_irqrestore(&priv->lock, flags);
8413d2fd	316	spcp8x5_set_ctrl_line(port, control);
619a6f1d GKH	317	} else {
	318	spin_unlock_irqrestore(&priv->lock, flags);
	319	}
	320
	321	/* Set Baud Rate */
a419aef8	322	baud = tty_get_baud_rate(tty);
619a6f1d GKH	323	switch (baud) {
	324	case 300: buf[0] = 0x00; break;
	325	case 600: buf[0] = 0x01; break;
	326	case 1200: buf[0] = 0x02; break;
	327	case 2400: buf[0] = 0x03; break;
	328	case 4800: buf[0] = 0x04; break;
	329	case 9600: buf[0] = 0x05; break;
	330	case 19200: buf[0] = 0x07; break;
	331	case 38400: buf[0] = 0x09; break;
	332	case 57600: buf[0] = 0x0a; break;
	333	case 115200: buf[0] = 0x0b; break;
	334	case 230400: buf[0] = 0x0c; break;
	335	case 460800: buf[0] = 0x0d; break;
	336	case 921600: buf[0] = 0x0e; break;
	337	/* case 1200000: buf[0] = 0x0f; break; */
	338	/* case 2400000: buf[0] = 0x10; break; */
	339	case 3000000: buf[0] = 0x11; break;
	340	/* case 6000000: buf[0] = 0x12; break; */
	341	case 0:
	342	case 1000000:
	343	buf[0] = 0x0b; break;
	344	default:
d9a38a87	345	dev_err(&port->dev, "unsupported baudrate, using 9600\n");
619a6f1d GKH	346	}
	347
	348	/* Set Data Length : 00:5bit, 01:6bit, 10:7bit, 11:8bit */
711fbdfb CL	349	switch (cflag & CSIZE) {
	350	case CS5:
	351	buf[1] \|= SET_UART_FORMAT_SIZE_5;
	352	break;
	353	case CS6:
	354	buf[1] \|= SET_UART_FORMAT_SIZE_6;
	355	break;
	356	case CS7:
	357	buf[1] \|= SET_UART_FORMAT_SIZE_7;
	358	break;
	359	default:
	360	case CS8:
	361	buf[1] \|= SET_UART_FORMAT_SIZE_8;
	362	break;
619a6f1d GKH	363	}
	364
	365	/* Set Stop bit2 : 0:1bit 1:2bit */
	366	buf[1] \|= (cflag & CSTOPB) ? SET_UART_FORMAT_STOP_2 :
	367	SET_UART_FORMAT_STOP_1;
	368
	369	/* Set Parity bit3-4 01:Odd 11:Even */
	370	if (cflag & PARENB) {
	371	buf[1] \|= (cflag & PARODD) ?
	372	SET_UART_FORMAT_PAR_ODD : SET_UART_FORMAT_PAR_EVEN ;
2d816ac6	373	} else {
619a6f1d	374	buf[1] \|= SET_UART_FORMAT_PAR_NONE;
2d816ac6	375	}
619a6f1d GKH	376	uartdata = buf[0] \| buf[1]<<8;
	377
	378	i = usb_control_msg(serial->dev, usb_sndctrlpipe(serial->dev, 0),
	379	SET_UART_FORMAT_TYPE, SET_UART_FORMAT,
	380	uartdata, 0, NULL, 0, 100);
	381	if (i < 0)
194343d9 GKH	382	dev_err(&port->dev, "Set UART format %#x failed (error = %d)\n",
194343d9 GKH	383	uartdata, i);
fe2baf87	384	dev_dbg(&port->dev, "0x21:0x40:0:0 %d\n", i);
619a6f1d GKH	385
	386	if (cflag & CRTSCTS) {
	387	/* enable hardware flow control */
8413d2fd	388	spcp8x5_set_work_mode(port, 0x000a, SET_WORKING_MODE_U2C);
619a6f1d	389	}
619a6f1d GKH	390	}
619a6f1d GKH	391
a509a7e4	392	static int spcp8x5_open(struct tty_struct tty, struct usb_serial_port port)
619a6f1d	393	{
619a6f1d GKH	394	struct usb_serial *serial = port->serial;
	395	struct spcp8x5_private *priv = usb_get_serial_port_data(port);
	396	int ret;
619a6f1d	397
619a6f1d GKH	398	usb_clear_halt(serial->dev, port->write_urb->pipe);
	399	usb_clear_halt(serial->dev, port->read_urb->pipe);
	400
	401	ret = usb_control_msg(serial->dev, usb_sndctrlpipe(serial->dev, 0),
	402	0x09, 0x00,
	403	0x01, 0x00, NULL, 0x00, 100);
	404	if (ret)
	405	return ret;
	406
8413d2fd	407	spcp8x5_set_ctrl_line(port, priv->line_control);
619a6f1d	408
95da310e	409	if (tty)
5e4211f1	410	spcp8x5_set_termios(tty, port, NULL);
619a6f1d	411
fa993ca8	412	return usb_serial_generic_open(tty, port);
619a6f1d GKH	413	}
619a6f1d GKH	414
20b9d177	415	static int spcp8x5_tiocmset(struct tty_struct *tty,
619a6f1d GKH	416	unsigned int set, unsigned int clear)
619a6f1d GKH	417	{
95da310e	418	struct usb_serial_port *port = tty->driver_data;
619a6f1d GKH	419	struct spcp8x5_private *priv = usb_get_serial_port_data(port);
	420	unsigned long flags;
	421	u8 control;
	422
	423	spin_lock_irqsave(&priv->lock, flags);
	424	if (set & TIOCM_RTS)
	425	priv->line_control \|= MCR_RTS;
	426	if (set & TIOCM_DTR)
	427	priv->line_control \|= MCR_DTR;
	428	if (clear & TIOCM_RTS)
	429	priv->line_control &= ~MCR_RTS;
	430	if (clear & TIOCM_DTR)
	431	priv->line_control &= ~MCR_DTR;
	432	control = priv->line_control;
	433	spin_unlock_irqrestore(&priv->lock, flags);
	434
8413d2fd	435	return spcp8x5_set_ctrl_line(port, control);
619a6f1d GKH	436	}
619a6f1d GKH	437
60b33c13	438	static int spcp8x5_tiocmget(struct tty_struct *tty)
619a6f1d	439	{
95da310e	440	struct usb_serial_port *port = tty->driver_data;
619a6f1d GKH	441	struct spcp8x5_private *priv = usb_get_serial_port_data(port);
	442	unsigned long flags;
	443	unsigned int mcr;
e1ed212d	444	u8 status;
619a6f1d GKH	445	unsigned int result;
619a6f1d GKH	446
e1ed212d JH	447	result = spcp8x5_get_msr(port, &status);
	448	if (result)
	449	return result;
	450
619a6f1d GKH	451	spin_lock_irqsave(&priv->lock, flags);
619a6f1d GKH	452	mcr = priv->line_control;
619a6f1d GKH	453	spin_unlock_irqrestore(&priv->lock, flags);
	454
	455	result = ((mcr & MCR_DTR) ? TIOCM_DTR : 0)
	456	\| ((mcr & MCR_RTS) ? TIOCM_RTS : 0)
	457	\| ((status & MSR_STATUS_LINE_CTS) ? TIOCM_CTS : 0)
	458	\| ((status & MSR_STATUS_LINE_DSR) ? TIOCM_DSR : 0)
	459	\| ((status & MSR_STATUS_LINE_RI) ? TIOCM_RI : 0)
	460	\| ((status & MSR_STATUS_LINE_DCD) ? TIOCM_CD : 0);
	461
	462	return result;
	463	}
	464
619a6f1d GKH	465	static struct usb_serial_driver spcp8x5_device = {
	466	.driver = {
	467	.owner = THIS_MODULE,
	468	.name = "SPCP8x5",
	469	},
	470	.id_table = id_table,
619a6f1d	471	.num_ports = 1,
2d816ac6	472	.open = spcp8x5_open,
335f8514 AC	473	.dtr_rts = spcp8x5_dtr_rts,
335f8514 AC	474	.carrier_raised = spcp8x5_carrier_raised,
2d816ac6	475	.set_termios = spcp8x5_set_termios,
fe1ae7fd	476	.init_termios = spcp8x5_init_termios,
2d816ac6 JH	477	.tiocmget = spcp8x5_tiocmget,
2d816ac6 JH	478	.tiocmset = spcp8x5_tiocmset,
4d63143d	479	.probe = spcp8x5_probe,
bf90ff5f JH	480	.port_probe = spcp8x5_port_probe,
bf90ff5f JH	481	.port_remove = spcp8x5_port_remove,
619a6f1d GKH	482	};
619a6f1d GKH	483
d860322f AS	484	static struct usb_serial_driver * const serial_drivers[] = {
	485	&spcp8x5_device, NULL
	486	};
	487
68e24113	488	module_usb_serial_driver(serial_drivers, id_table);
619a6f1d GKH	489
619a6f1d GKH	490	MODULE_DESCRIPTION(DRIVER_DESC);
619a6f1d	491	MODULE_LICENSE("GPL");