Orange Pi5 kernel

// SPDX-License-Identifier: GPL-2.0+
/*
 * Infinity Unlimited USB Phoenix driver
 *
 * Copyright (C) 2010 James Courtier-Dutton (James@superbug.co.uk)
 
 * Copyright (C) 2007 Alain Degreffe (eczema@ecze.com)
 *
 * Original code taken from iuutool (Copyright (C) 2006 Juan Carlos Borrás)
 *
 *  And tested with help of WB Electronics
 */
#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/serial.h>
#include <linux/module.h>
#include <linux/moduleparam.h>
#include <linux/spinlock.h>
#include <linux/uaccess.h>
#include <linux/usb.h>
#include <linux/usb/serial.h>
#include "iuu_phoenix.h"
#include <linux/random.h>
 
#define DRIVER_DESC "Infinity USB Unlimited Phoenix driver"
 
static const struct usb_device_id id_table[] = {
<------>{USB_DEVICE(IUU_USB_VENDOR_ID, IUU_USB_PRODUCT_ID)},
<------>{}			/* Terminating entry */
};
MODULE_DEVICE_TABLE(usb, id_table);
 
/* turbo parameter */
static int boost = 100;
static int clockmode = 1;
static int cdmode = 1;
static int iuu_cardin;
static int iuu_cardout;
static bool xmas;
static int vcc_default = 5;
 
static int iuu_create_sysfs_attrs(struct usb_serial_port *port);
static int iuu_remove_sysfs_attrs(struct usb_serial_port *port);
static void read_rxcmd_callback(struct urb *urb);
 
struct iuu_private {
<------>spinlock_t lock;	/* store irq state */
<------>u8 line_status;
<------>int tiostatus;		/* store IUART SIGNAL for tiocmget call */
<------>u8 reset;		/* if 1 reset is needed */
<------>int poll;		/* number of poll */
<------>u8 *writebuf;		/* buffer for writing to device */
<------>int writelen;		/* num of byte to write to device */
<------>u8 *buf;		/* used for initialize speed */
<------>u8 len;
<------>int vcc;		/* vcc (either 3 or 5 V) */
<------>u32 boost;
<------>u32 clk;
};
 
static int iuu_port_probe(struct usb_serial_port *port)
{
<------>struct iuu_private *priv;
<------>int ret;
 
<------>priv = kzalloc(sizeof(struct iuu_private), GFP_KERNEL);
<------>if (!priv)
<------><------>return -ENOMEM;
 
<------>priv->buf = kzalloc(256, GFP_KERNEL);
<------>if (!priv->buf) {
<------><------>kfree(priv);
<------><------>return -ENOMEM;
<------>}
 
<------>priv->writebuf = kzalloc(256, GFP_KERNEL);
<------>if (!priv->writebuf) {
<------><------>kfree(priv->buf);
<------><------>kfree(priv);
<------><------>return -ENOMEM;
<------>}
 
<------>priv->vcc = vcc_default;
<------>spin_lock_init(&priv->lock);
 
<------>usb_set_serial_port_data(port, priv);
 
<------>ret = iuu_create_sysfs_attrs(port);
<------>if (ret) {
<------><------>kfree(priv->writebuf);
<------><------>kfree(priv->buf);
<------><------>kfree(priv);
<------><------>return ret;
<------>}
 
<------>return 0;
}
 
static int iuu_port_remove(struct usb_serial_port *port)
{
<------>struct iuu_private *priv = usb_get_serial_port_data(port);
 
<------>iuu_remove_sysfs_attrs(port);
<------>kfree(priv->writebuf);
<------>kfree(priv->buf);
<------>kfree(priv);
 
<------>return 0;
}
 
static int iuu_tiocmset(struct tty_struct *tty,
<------><------><------>unsigned int set, unsigned int clear)
{
<------>struct usb_serial_port *port = tty->driver_data;
<------>struct iuu_private *priv = usb_get_serial_port_data(port);
<------>unsigned long flags;
 
<------>/* FIXME: locking on tiomstatus */
<------>dev_dbg(&port->dev, "%s msg : SET = 0x%04x, CLEAR = 0x%04x\n",
<------><------>__func__, set, clear);
 
<------>spin_lock_irqsave(&priv->lock, flags);
 
<------>if ((set & TIOCM_RTS) && !(priv->tiostatus == TIOCM_RTS)) {
<------><------>dev_dbg(&port->dev, "%s TIOCMSET RESET called !!!\n", __func__);
<------><------>priv->reset = 1;
<------>}
<------>if (set & TIOCM_RTS)
<------><------>priv->tiostatus = TIOCM_RTS;
 
<------>spin_unlock_irqrestore(&priv->lock, flags);
<------>return 0;
}
 
/* This is used to provide a carrier detect mechanism
 * When a card is present, the response is 0x00
 * When no card , the reader respond with TIOCM_CD
 * This is known as CD autodetect mechanism
 */
static int iuu_tiocmget(struct tty_struct *tty)
{
<------>struct usb_serial_port *port = tty->driver_data;
<------>struct iuu_private *priv = usb_get_serial_port_data(port);
<------>unsigned long flags;
<------>int rc;
 
<------>spin_lock_irqsave(&priv->lock, flags);
<------>rc = priv->tiostatus;
<------>spin_unlock_irqrestore(&priv->lock, flags);
 
<------>return rc;
}
 
static void iuu_rxcmd(struct urb *urb)
{
<------>struct usb_serial_port *port = urb->context;
<------>int status = urb->status;
 
<------>if (status) {
<------><------>dev_dbg(&port->dev, "%s - status = %d\n", __func__, status);
<------><------>/* error stop all */
<------><------>return;
<------>}
 
 
<------>memset(port->write_urb->transfer_buffer, IUU_UART_RX, 1);
<------>usb_fill_bulk_urb(port->write_urb, port->serial->dev,
<------><------><------>  usb_sndbulkpipe(port->serial->dev,
<------><------><------><------><------>  port->bulk_out_endpointAddress),
<------><------><------>  port->write_urb->transfer_buffer, 1,
<------><------><------>  read_rxcmd_callback, port);
<------>usb_submit_urb(port->write_urb, GFP_ATOMIC);
}
 
static int iuu_reset(struct usb_serial_port *port, u8 wt)
{
<------>struct iuu_private *priv = usb_get_serial_port_data(port);
<------>int result;
<------>char *buf_ptr = port->write_urb->transfer_buffer;
 
<------>/* Prepare the reset sequence */
 
<------>*buf_ptr++ = IUU_RST_SET;
<------>*buf_ptr++ = IUU_DELAY_MS;
<------>*buf_ptr++ = wt;
<------>*buf_ptr = IUU_RST_CLEAR;
 
<------>/* send the sequence */
 
<------>usb_fill_bulk_urb(port->write_urb,
<------><------><------>  port->serial->dev,
<------><------><------>  usb_sndbulkpipe(port->serial->dev,
<------><------><------><------><------>  port->bulk_out_endpointAddress),
<------><------><------>  port->write_urb->transfer_buffer, 4, iuu_rxcmd, port);
<------>result = usb_submit_urb(port->write_urb, GFP_ATOMIC);
<------>priv->reset = 0;
<------>return result;
}
 
/* Status Function
 * Return value is
 * 0x00 = no card
 * 0x01 = smartcard
 * 0x02 = sim card
 */
static void iuu_update_status_callback(struct urb *urb)
{
<------>struct usb_serial_port *port = urb->context;
<------>struct iuu_private *priv = usb_get_serial_port_data(port);
<------>u8 *st;
<------>int status = urb->status;
 
<------>if (status) {
<------><------>dev_dbg(&port->dev, "%s - status = %d\n", __func__, status);
<------><------>/* error stop all */
<------><------>return;
<------>}
 
<------>st = urb->transfer_buffer;
<------>dev_dbg(&port->dev, "%s - enter\n", __func__);
<------>if (urb->actual_length == 1) {
<------><------>switch (st[0]) {
<------><------>case 0x1:
<------><------><------>priv->tiostatus = iuu_cardout;
<------><------><------>break;
<------><------>case 0x0:
<------><------><------>priv->tiostatus = iuu_cardin;
<------><------><------>break;
<------><------>default:
<------><------><------>priv->tiostatus = iuu_cardin;
<------><------>}
<------>}
<------>iuu_rxcmd(urb);
}
 
static void iuu_status_callback(struct urb *urb)
{
<------>struct usb_serial_port *port = urb->context;
<------>int status = urb->status;
 
<------>dev_dbg(&port->dev, "%s - status = %d\n", __func__, status);
<------>usb_fill_bulk_urb(port->read_urb, port->serial->dev,
<------><------><------>  usb_rcvbulkpipe(port->serial->dev,
<------><------><------><------><------>  port->bulk_in_endpointAddress),
<------><------><------>  port->read_urb->transfer_buffer, 256,
<------><------><------>  iuu_update_status_callback, port);
<------>usb_submit_urb(port->read_urb, GFP_ATOMIC);
}
 
static int iuu_status(struct usb_serial_port *port)
{
<------>int result;
 
<------>memset(port->write_urb->transfer_buffer, IUU_GET_STATE_REGISTER, 1);
<------>usb_fill_bulk_urb(port->write_urb, port->serial->dev,
<------><------><------>  usb_sndbulkpipe(port->serial->dev,
<------><------><------><------><------>  port->bulk_out_endpointAddress),
<------><------><------>  port->write_urb->transfer_buffer, 1,
<------><------><------>  iuu_status_callback, port);
<------>result = usb_submit_urb(port->write_urb, GFP_ATOMIC);
<------>return result;
 
}
 
static int bulk_immediate(struct usb_serial_port *port, u8 *buf, u8 count)
{
<------>int status;
<------>struct usb_serial *serial = port->serial;
<------>int actual = 0;
 
<------>/* send the data out the bulk port */
 
<------>status =
<------>    usb_bulk_msg(serial->dev,
<------><------><------> usb_sndbulkpipe(serial->dev,
<------><------><------><------><------> port->bulk_out_endpointAddress), buf,
<------><------><------> count, &actual, 1000);
 
<------>if (status != IUU_OPERATION_OK)
<------><------>dev_dbg(&port->dev, "%s - error = %2x\n", __func__, status);
<------>else
<------><------>dev_dbg(&port->dev, "%s - write OK !\n", __func__);
<------>return status;
}
 
static int read_immediate(struct usb_serial_port *port, u8 *buf, u8 count)
{
<------>int status;
<------>struct usb_serial *serial = port->serial;
<------>int actual = 0;
 
<------>/* send the data out the bulk port */
<------>status =
<------>    usb_bulk_msg(serial->dev,
<------><------><------> usb_rcvbulkpipe(serial->dev,
<------><------><------><------><------> port->bulk_in_endpointAddress), buf,
<------><------><------> count, &actual, 1000);
 
<------>if (status != IUU_OPERATION_OK)
<------><------>dev_dbg(&port->dev, "%s - error = %2x\n", __func__, status);
<------>else
<------><------>dev_dbg(&port->dev, "%s - read OK !\n", __func__);
<------>return status;
}
 
static int iuu_led(struct usb_serial_port *port, unsigned int R,
<------><------>   unsigned int G, unsigned int B, u8 f)
{
<------>int status;
<------>u8 *buf;
<------>buf = kmalloc(8, GFP_KERNEL);
<------>if (!buf)
<------><------>return -ENOMEM;
 
<------>buf[0] = IUU_SET_LED;
<------>buf[1] = R & 0xFF;
<------>buf[2] = (R >> 8) & 0xFF;
<------>buf[3] = G & 0xFF;
<------>buf[4] = (G >> 8) & 0xFF;
<------>buf[5] = B & 0xFF;
<------>buf[6] = (B >> 8) & 0xFF;
<------>buf[7] = f;
<------>status = bulk_immediate(port, buf, 8);
<------>kfree(buf);
<------>if (status != IUU_OPERATION_OK)
<------><------>dev_dbg(&port->dev, "%s - led error status = %2x\n", __func__, status);
<------>else
<------><------>dev_dbg(&port->dev, "%s - led OK !\n", __func__);
<------>return IUU_OPERATION_OK;
}
 
static void iuu_rgbf_fill_buffer(u8 *buf, u8 r1, u8 r2, u8 g1, u8 g2, u8 b1,
<------><------><------><------> u8 b2, u8 freq)
{
<------>*buf++ = IUU_SET_LED;
<------>*buf++ = r1;
<------>*buf++ = r2;
<------>*buf++ = g1;
<------>*buf++ = g2;
<------>*buf++ = b1;
<------>*buf++ = b2;
<------>*buf = freq;
}
 
static void iuu_led_activity_on(struct urb *urb)
{
<------>struct usb_serial_port *port = urb->context;
<------>char *buf_ptr = port->write_urb->transfer_buffer;
 
<------>if (xmas) {
<------><------>buf_ptr[0] = IUU_SET_LED;
<------><------>get_random_bytes(buf_ptr + 1, 6);
<------><------>buf_ptr[7] = 1;
<------>} else {
<------><------>iuu_rgbf_fill_buffer(buf_ptr, 255, 255, 0, 0, 0, 0, 255);
<------>}
 
<------>usb_fill_bulk_urb(port->write_urb, port->serial->dev,
<------><------><------>  usb_sndbulkpipe(port->serial->dev,
<------><------><------><------><------>  port->bulk_out_endpointAddress),
<------><------><------>  port->write_urb->transfer_buffer, 8 ,
<------><------><------>  iuu_rxcmd, port);
<------>usb_submit_urb(port->write_urb, GFP_ATOMIC);
}
 
static void iuu_led_activity_off(struct urb *urb)
{
<------>struct usb_serial_port *port = urb->context;
<------>char *buf_ptr = port->write_urb->transfer_buffer;
 
<------>if (xmas) {
<------><------>iuu_rxcmd(urb);
<------><------>return;
<------>}
 
<------>iuu_rgbf_fill_buffer(buf_ptr, 0, 0, 255, 255, 0, 0, 255);
 
<------>usb_fill_bulk_urb(port->write_urb, port->serial->dev,
<------><------><------>  usb_sndbulkpipe(port->serial->dev,
<------><------><------><------><------>  port->bulk_out_endpointAddress),
<------><------><------>  port->write_urb->transfer_buffer, 8 ,
<------><------><------>  iuu_rxcmd, port);
<------>usb_submit_urb(port->write_urb, GFP_ATOMIC);
}
 
 
 
static int iuu_clk(struct usb_serial_port *port, int dwFrq)
{
<------>int status;
<------>struct iuu_private *priv = usb_get_serial_port_data(port);
<------>int Count = 0;
<------>u8 FrqGenAdr = 0x69;
<------>u8 DIV = 0;		/* 8bit */
<------>u8 XDRV = 0;		/* 8bit */
<------>u8 PUMP = 0;		/* 3bit */
<------>u8 PBmsb = 0;		/* 2bit */
<------>u8 PBlsb = 0;		/* 8bit */
<------>u8 PO = 0;		/* 1bit */
<------>u8 Q = 0;		/* 7bit */
<------>/* 24bit = 3bytes */
<------>unsigned int P = 0;
<------>unsigned int P2 = 0;
<------>int frq = (int)dwFrq;
 
<------>if (frq == 0) {
<------><------>priv->buf[Count++] = IUU_UART_WRITE_I2C;
<------><------>priv->buf[Count++] = FrqGenAdr << 1;
<------><------>priv->buf[Count++] = 0x09;
<------><------>priv->buf[Count++] = 0x00;
 
<------><------>status = bulk_immediate(port, (u8 *) priv->buf, Count);
<------><------>if (status != 0) {
<------><------><------>dev_dbg(&port->dev, "%s - write error\n", __func__);
<------><------><------>return status;
<------><------>}
<------>} else if (frq == 3579000) {
<------><------>DIV = 100;
<------><------>P = 1193;
<------><------>Q = 40;
<------><------>XDRV = 0;
<------>} else if (frq == 3680000) {
<------><------>DIV = 105;
<------><------>P = 161;
<------><------>Q = 5;
<------><------>XDRV = 0;
<------>} else if (frq == 6000000) {
<------><------>DIV = 66;
<------><------>P = 66;
<------><------>Q = 2;
<------><------>XDRV = 0x28;
<------>} else {
<------><------>unsigned int result = 0;
<------><------>unsigned int tmp = 0;
<------><------>unsigned int check;
<------><------>unsigned int check2;
<------><------>char found = 0x00;
<------><------>unsigned int lQ = 2;
<------><------>unsigned int lP = 2055;
<------><------>unsigned int lDiv = 4;
 
<------><------>for (lQ = 2; lQ <= 47 && !found; lQ++)
<------><------><------>for (lP = 2055; lP >= 8 && !found; lP--)
<------><------><------><------>for (lDiv = 4; lDiv <= 127 && !found; lDiv++) {
<------><------><------><------><------>tmp = (12000000 / lDiv) * (lP / lQ);
<------><------><------><------><------>if (abs((int)(tmp - frq)) <
<------><------><------><------><------>    abs((int)(frq - result))) {
<------><------><------><------><------><------>check2 = (12000000 / lQ);
<------><------><------><------><------><------>if (check2 < 250000)
<------><------><------><------><------><------><------>continue;
<------><------><------><------><------><------>check = (12000000 / lQ) * lP;
<------><------><------><------><------><------>if (check > 400000000)
<------><------><------><------><------><------><------>continue;
<------><------><------><------><------><------>if (check < 100000000)
<------><------><------><------><------><------><------>continue;
<------><------><------><------><------><------>if (lDiv < 4 || lDiv > 127)
<------><------><------><------><------><------><------>continue;
<------><------><------><------><------><------>result = tmp;
<------><------><------><------><------><------>P = lP;
<------><------><------><------><------><------>DIV = lDiv;
<------><------><------><------><------><------>Q = lQ;
<------><------><------><------><------><------>if (result == frq)
<------><------><------><------><------><------><------>found = 0x01;
<------><------><------><------><------>}
<------><------><------><------>}
<------>}
<------>P2 = ((P - PO) / 2) - 4;
<------>PUMP = 0x04;
<------>PBmsb = (P2 >> 8 & 0x03);
<------>PBlsb = P2 & 0xFF;
<------>PO = (P >> 10) & 0x01;
<------>Q = Q - 2;
 
<------>priv->buf[Count++] = IUU_UART_WRITE_I2C;	/* 0x4C */
<------>priv->buf[Count++] = FrqGenAdr << 1;
<------>priv->buf[Count++] = 0x09;
<------>priv->buf[Count++] = 0x20;	/* Adr = 0x09 */
<------>priv->buf[Count++] = IUU_UART_WRITE_I2C;	/* 0x4C */
<------>priv->buf[Count++] = FrqGenAdr << 1;
<------>priv->buf[Count++] = 0x0C;
<------>priv->buf[Count++] = DIV;	/* Adr = 0x0C */
<------>priv->buf[Count++] = IUU_UART_WRITE_I2C;	/* 0x4C */
<------>priv->buf[Count++] = FrqGenAdr << 1;
<------>priv->buf[Count++] = 0x12;
<------>priv->buf[Count++] = XDRV;	/* Adr = 0x12 */
<------>priv->buf[Count++] = IUU_UART_WRITE_I2C;	/*  0x4C */
<------>priv->buf[Count++] = FrqGenAdr << 1;
<------>priv->buf[Count++] = 0x13;
<------>priv->buf[Count++] = 0x6B;	/* Adr = 0x13 */
<------>priv->buf[Count++] = IUU_UART_WRITE_I2C;	/*  0x4C */
<------>priv->buf[Count++] = FrqGenAdr << 1;
<------>priv->buf[Count++] = 0x40;
<------>priv->buf[Count++] = (0xC0 | ((PUMP & 0x07) << 2)) |
<------><------><------>     (PBmsb & 0x03);	/* Adr = 0x40 */
<------>priv->buf[Count++] = IUU_UART_WRITE_I2C;	/*  0x4C */
<------>priv->buf[Count++] = FrqGenAdr << 1;
<------>priv->buf[Count++] = 0x41;
<------>priv->buf[Count++] = PBlsb;	/* Adr = 0x41 */
<------>priv->buf[Count++] = IUU_UART_WRITE_I2C;	/*  0x4C */
<------>priv->buf[Count++] = FrqGenAdr << 1;
<------>priv->buf[Count++] = 0x42;
<------>priv->buf[Count++] = Q | (((PO & 0x01) << 7));	/* Adr = 0x42 */
<------>priv->buf[Count++] = IUU_UART_WRITE_I2C;	/*  0x4C */
<------>priv->buf[Count++] = FrqGenAdr << 1;
<------>priv->buf[Count++] = 0x44;
<------>priv->buf[Count++] = (char)0xFF;	/* Adr = 0x44 */
<------>priv->buf[Count++] = IUU_UART_WRITE_I2C;	/*  0x4C */
<------>priv->buf[Count++] = FrqGenAdr << 1;
<------>priv->buf[Count++] = 0x45;
<------>priv->buf[Count++] = (char)0xFE;	/* Adr = 0x45 */
<------>priv->buf[Count++] = IUU_UART_WRITE_I2C;	/*  0x4C */
<------>priv->buf[Count++] = FrqGenAdr << 1;
<------>priv->buf[Count++] = 0x46;
<------>priv->buf[Count++] = 0x7F;	/* Adr = 0x46 */
<------>priv->buf[Count++] = IUU_UART_WRITE_I2C;	/*  0x4C */
<------>priv->buf[Count++] = FrqGenAdr << 1;
<------>priv->buf[Count++] = 0x47;
<------>priv->buf[Count++] = (char)0x84;	/* Adr = 0x47 */
 
<------>status = bulk_immediate(port, (u8 *) priv->buf, Count);
<------>if (status != IUU_OPERATION_OK)
<------><------>dev_dbg(&port->dev, "%s - write error\n", __func__);
<------>return status;
}
 
static int iuu_uart_flush(struct usb_serial_port *port)
{
<------>struct device *dev = &port->dev;
<------>int i;
<------>int status;
<------>u8 *rxcmd;
<------>struct iuu_private *priv = usb_get_serial_port_data(port);
 
<------>if (iuu_led(port, 0xF000, 0, 0, 0xFF) < 0)
<------><------>return -EIO;
 
<------>rxcmd = kmalloc(1, GFP_KERNEL);
<------>if (!rxcmd)
<------><------>return -ENOMEM;
 
<------>rxcmd[0] = IUU_UART_RX;
 
<------>for (i = 0; i < 2; i++) {
<------><------>status = bulk_immediate(port, rxcmd, 1);
<------><------>if (status != IUU_OPERATION_OK) {
<------><------><------>dev_dbg(dev, "%s - uart_flush_write error\n", __func__);
<------><------><------>goto out_free;
<------><------>}
 
<------><------>status = read_immediate(port, &priv->len, 1);
<------><------>if (status != IUU_OPERATION_OK) {
<------><------><------>dev_dbg(dev, "%s - uart_flush_read error\n", __func__);
<------><------><------>goto out_free;
<------><------>}
 
<------><------>if (priv->len > 0) {
<------><------><------>dev_dbg(dev, "%s - uart_flush datalen is : %i\n", __func__, priv->len);
<------><------><------>status = read_immediate(port, priv->buf, priv->len);
<------><------><------>if (status != IUU_OPERATION_OK) {
<------><------><------><------>dev_dbg(dev, "%s - uart_flush_read error\n", __func__);
<------><------><------><------>goto out_free;
<------><------><------>}
<------><------>}
<------>}
<------>dev_dbg(dev, "%s - uart_flush_read OK!\n", __func__);
<------>iuu_led(port, 0, 0xF000, 0, 0xFF);
 
out_free:
<------>kfree(rxcmd);
 
<------>return status;
}
 
static void read_buf_callback(struct urb *urb)
{
<------>struct usb_serial_port *port = urb->context;
<------>unsigned char *data = urb->transfer_buffer;
<------>int status = urb->status;
 
<------>if (status) {
<------><------>if (status == -EPROTO) {
<------><------><------>/* reschedule needed */
<------><------>}
<------><------>return;
<------>}
 
<------>dev_dbg(&port->dev, "%s - %i chars to write\n", __func__, urb->actual_length);
 
<------>if (urb->actual_length) {
<------><------>tty_insert_flip_string(&port->port, data, urb->actual_length);
<------><------>tty_flip_buffer_push(&port->port);
<------>}
<------>iuu_led_activity_on(urb);
}
 
static int iuu_bulk_write(struct usb_serial_port *port)
{
<------>struct iuu_private *priv = usb_get_serial_port_data(port);
<------>unsigned long flags;
<------>int result;
<------>int buf_len;
<------>char *buf_ptr = port->write_urb->transfer_buffer;
 
<------>spin_lock_irqsave(&priv->lock, flags);
<------>*buf_ptr++ = IUU_UART_ESC;
<------>*buf_ptr++ = IUU_UART_TX;
<------>*buf_ptr++ = priv->writelen;
 
<------>memcpy(buf_ptr, priv->writebuf, priv->writelen);
<------>buf_len = priv->writelen;
<------>priv->writelen = 0;
<------>spin_unlock_irqrestore(&priv->lock, flags);
<------>dev_dbg(&port->dev, "%s - writing %i chars : %*ph\n", __func__,
<------><------>buf_len, buf_len, buf_ptr);
<------>usb_fill_bulk_urb(port->write_urb, port->serial->dev,
<------><------><------>  usb_sndbulkpipe(port->serial->dev,
<------><------><------><------><------>  port->bulk_out_endpointAddress),
<------><------><------>  port->write_urb->transfer_buffer, buf_len + 3,
<------><------><------>  iuu_rxcmd, port);
<------>result = usb_submit_urb(port->write_urb, GFP_ATOMIC);
<------>usb_serial_port_softint(port);
<------>return result;
}
 
static int iuu_read_buf(struct usb_serial_port *port, int len)
{
<------>int result;
 
<------>usb_fill_bulk_urb(port->read_urb, port->serial->dev,
<------><------><------>  usb_rcvbulkpipe(port->serial->dev,
<------><------><------><------><------>  port->bulk_in_endpointAddress),
<------><------><------>  port->read_urb->transfer_buffer, len,
<------><------><------>  read_buf_callback, port);
<------>result = usb_submit_urb(port->read_urb, GFP_ATOMIC);
<------>return result;
}
 
static void iuu_uart_read_callback(struct urb *urb)
{
<------>struct usb_serial_port *port = urb->context;
<------>struct iuu_private *priv = usb_get_serial_port_data(port);
<------>unsigned long flags;
<------>int status = urb->status;
<------>int error = 0;
<------>int len = 0;
<------>unsigned char *data = urb->transfer_buffer;
<------>priv->poll++;
 
<------>if (status) {
<------><------>dev_dbg(&port->dev, "%s - status = %d\n", __func__, status);
<------><------>/* error stop all */
<------><------>return;
<------>}
 
<------>if (urb->actual_length == 1)
<------><------>len = (int) data[0];
 
<------>if (urb->actual_length > 1) {
<------><------>dev_dbg(&port->dev, "%s - urb->actual_length = %i\n", __func__,
<------><------>    urb->actual_length);
<------><------>error = 1;
<------><------>return;
<------>}
<------>/* if len > 0 call readbuf */
 
<------>if (len > 0 && error == 0) {
<------><------>dev_dbg(&port->dev, "%s - call read buf - len to read is %i\n",
<------><------><------>__func__, len);
<------><------>status = iuu_read_buf(port, len);
<------><------>return;
<------>}
<------>/* need to update status  ? */
<------>if (priv->poll > 99) {
<------><------>status = iuu_status(port);
<------><------>priv->poll = 0;
<------><------>return;
<------>}
 
<------>/* reset waiting ? */
 
<------>if (priv->reset == 1) {
<------><------>status = iuu_reset(port, 0xC);
<------><------>return;
<------>}
<------>/* Writebuf is waiting */
<------>spin_lock_irqsave(&priv->lock, flags);
<------>if (priv->writelen > 0) {
<------><------>spin_unlock_irqrestore(&priv->lock, flags);
<------><------>status = iuu_bulk_write(port);
<------><------>return;
<------>}
<------>spin_unlock_irqrestore(&priv->lock, flags);
<------>/* if nothing to write call again rxcmd */
<------>dev_dbg(&port->dev, "%s - rxcmd recall\n", __func__);
<------>iuu_led_activity_off(urb);
}
 
static int iuu_uart_write(struct tty_struct *tty, struct usb_serial_port *port,
<------><------><------>  const u8 *buf, int count)
{
<------>struct iuu_private *priv = usb_get_serial_port_data(port);
<------>unsigned long flags;
 
<------>spin_lock_irqsave(&priv->lock, flags);
 
<------>count = min(count, 256 - priv->writelen);
<------>if (count == 0)
<------><------>goto out;
 
<------>/* fill the buffer */
<------>memcpy(priv->writebuf + priv->writelen, buf, count);
<------>priv->writelen += count;
out:
<------>spin_unlock_irqrestore(&priv->lock, flags);
 
<------>return count;
}
 
static void read_rxcmd_callback(struct urb *urb)
{
<------>struct usb_serial_port *port = urb->context;
<------>int result;
<------>int status = urb->status;
 
<------>if (status) {
<------><------>/* error stop all */
<------><------>return;
<------>}
 
<------>usb_fill_bulk_urb(port->read_urb, port->serial->dev,
<------><------><------>  usb_rcvbulkpipe(port->serial->dev,
<------><------><------><------><------>  port->bulk_in_endpointAddress),
<------><------><------>  port->read_urb->transfer_buffer, 256,
<------><------><------>  iuu_uart_read_callback, port);
<------>result = usb_submit_urb(port->read_urb, GFP_ATOMIC);
<------>dev_dbg(&port->dev, "%s - submit result = %d\n", __func__, result);
}
 
static int iuu_uart_on(struct usb_serial_port *port)
{
<------>int status;
<------>u8 *buf;
 
<------>buf = kmalloc(4, GFP_KERNEL);
 
<------>if (!buf)
<------><------>return -ENOMEM;
 
<------>buf[0] = IUU_UART_ENABLE;
<------>buf[1] = (u8) ((IUU_BAUD_9600 >> 8) & 0x00FF);
<------>buf[2] = (u8) (0x00FF & IUU_BAUD_9600);
<------>buf[3] = (u8) (0x0F0 & IUU_ONE_STOP_BIT) | (0x07 & IUU_PARITY_EVEN);
 
<------>status = bulk_immediate(port, buf, 4);
<------>if (status != IUU_OPERATION_OK) {
<------><------>dev_dbg(&port->dev, "%s - uart_on error\n", __func__);
<------><------>goto uart_enable_failed;
<------>}
<------>/*  iuu_reset() the card after iuu_uart_on() */
<------>status = iuu_uart_flush(port);
<------>if (status != IUU_OPERATION_OK)
<------><------>dev_dbg(&port->dev, "%s - uart_flush error\n", __func__);
uart_enable_failed:
<------>kfree(buf);
<------>return status;
}
 
/*  Disables the IUU UART (a.k.a. the Phoenix voiderface) */
static int iuu_uart_off(struct usb_serial_port *port)
{
<------>int status;
<------>u8 *buf;
<------>buf = kmalloc(1, GFP_KERNEL);
<------>if (!buf)
<------><------>return -ENOMEM;
<------>buf[0] = IUU_UART_DISABLE;
 
<------>status = bulk_immediate(port, buf, 1);
<------>if (status != IUU_OPERATION_OK)
<------><------>dev_dbg(&port->dev, "%s - uart_off error\n", __func__);
 
<------>kfree(buf);
<------>return status;
}
 
static int iuu_uart_baud(struct usb_serial_port *port, u32 baud_base,
<------><------><------> u32 *actual, u8 parity)
{
<------>int status;
<------>u32 baud;
<------>u8 *dataout;
<------>u8 DataCount = 0;
<------>u8 T1Frekvens = 0;
<------>u8 T1reload = 0;
<------>unsigned int T1FrekvensHZ = 0;
 
<------>dev_dbg(&port->dev, "%s - enter baud_base=%d\n", __func__, baud_base);
<------>dataout = kmalloc(5, GFP_KERNEL);
 
<------>if (!dataout)
<------><------>return -ENOMEM;
<------>/*baud = (((priv->clk / 35) * baud_base) / 100000); */
<------>baud = baud_base;
 
<------>if (baud < 1200 || baud > 230400) {
<------><------>kfree(dataout);
<------><------>return IUU_INVALID_PARAMETER;
<------>}
<------>if (baud > 977) {
<------><------>T1Frekvens = 3;
<------><------>T1FrekvensHZ = 500000;
<------>}
 
<------>if (baud > 3906) {
<------><------>T1Frekvens = 2;
<------><------>T1FrekvensHZ = 2000000;
<------>}
 
<------>if (baud > 11718) {
<------><------>T1Frekvens = 1;
<------><------>T1FrekvensHZ = 6000000;
<------>}
 
<------>if (baud > 46875) {
<------><------>T1Frekvens = 0;
<------><------>T1FrekvensHZ = 24000000;
<------>}
 
<------>T1reload = 256 - (u8) (T1FrekvensHZ / (baud * 2));
 
<------>/*  magic number here:  ENTER_FIRMWARE_UPDATE; */
<------>dataout[DataCount++] = IUU_UART_ESC;
<------>/*  magic number here:  CHANGE_BAUD; */
<------>dataout[DataCount++] = IUU_UART_CHANGE;
<------>dataout[DataCount++] = T1Frekvens;
<------>dataout[DataCount++] = T1reload;
 
<------>*actual = (T1FrekvensHZ / (256 - T1reload)) / 2;
 
<------>switch (parity & 0x0F) {
<------>case IUU_PARITY_NONE:
<------><------>dataout[DataCount++] = 0x00;
<------><------>break;
<------>case IUU_PARITY_EVEN:
<------><------>dataout[DataCount++] = 0x01;
<------><------>break;
<------>case IUU_PARITY_ODD:
<------><------>dataout[DataCount++] = 0x02;
<------><------>break;
<------>case IUU_PARITY_MARK:
<------><------>dataout[DataCount++] = 0x03;
<------><------>break;
<------>case IUU_PARITY_SPACE:
<------><------>dataout[DataCount++] = 0x04;
<------><------>break;
<------>default:
<------><------>kfree(dataout);
<------><------>return IUU_INVALID_PARAMETER;
<------><------>break;
<------>}
 
<------>switch (parity & 0xF0) {
<------>case IUU_ONE_STOP_BIT:
<------><------>dataout[DataCount - 1] |= IUU_ONE_STOP_BIT;
<------><------>break;
 
<------>case IUU_TWO_STOP_BITS:
<------><------>dataout[DataCount - 1] |= IUU_TWO_STOP_BITS;
<------><------>break;
<------>default:
<------><------>kfree(dataout);
<------><------>return IUU_INVALID_PARAMETER;
<------><------>break;
<------>}
 
<------>status = bulk_immediate(port, dataout, DataCount);
<------>if (status != IUU_OPERATION_OK)
<------><------>dev_dbg(&port->dev, "%s - uart_off error\n", __func__);
<------>kfree(dataout);
<------>return status;
}
 
static void iuu_set_termios(struct tty_struct *tty,
<------><------>struct usb_serial_port *port, struct ktermios *old_termios)
{
<------>const u32 supported_mask = CMSPAR|PARENB|PARODD;
<------>struct iuu_private *priv = usb_get_serial_port_data(port);
<------>unsigned int cflag = tty->termios.c_cflag;
<------>int status;
<------>u32 actual;
<------>u32 parity;
<------>int csize = CS7;
<------>int baud;
<------>u32 newval = cflag & supported_mask;
 
<------>/* Just use the ospeed. ispeed should be the same. */
<------>baud = tty->termios.c_ospeed;
 
<------>dev_dbg(&port->dev, "%s - enter c_ospeed or baud=%d\n", __func__, baud);
 
<------>/* compute the parity parameter */
<------>parity = 0;
<------>if (cflag & CMSPAR) {	/* Using mark space */
<------><------>if (cflag & PARODD)
<------><------><------>parity |= IUU_PARITY_SPACE;
<------><------>else
<------><------><------>parity |= IUU_PARITY_MARK;
<------>} else if (!(cflag & PARENB)) {
<------><------>parity |= IUU_PARITY_NONE;
<------><------>csize = CS8;
<------>} else if (cflag & PARODD)
<------><------>parity |= IUU_PARITY_ODD;
<------>else
<------><------>parity |= IUU_PARITY_EVEN;
 
<------>parity |= (cflag & CSTOPB ? IUU_TWO_STOP_BITS : IUU_ONE_STOP_BIT);
 
<------>/* set it */
<------>status = iuu_uart_baud(port,
<------><------><------>baud * priv->boost / 100,
<------><------><------>&actual, parity);
 
<------>/* set the termios value to the real one, so the user now what has
<------> * changed. We support few fields so its easies to copy the old hw
<------> * settings back over and then adjust them
<------> */
<------>if (old_termios)
<------><------>tty_termios_copy_hw(&tty->termios, old_termios);
<------>if (status != 0)	/* Set failed - return old bits */
<------><------>return;
<------>/* Re-encode speed, parity and csize */
<------>tty_encode_baud_rate(tty, baud, baud);
<------>tty->termios.c_cflag &= ~(supported_mask|CSIZE);
<------>tty->termios.c_cflag |= newval | csize;
}
 
static void iuu_close(struct usb_serial_port *port)
{
<------>/* iuu_led (port,255,0,0,0); */
 
<------>iuu_uart_off(port);
 
<------>usb_kill_urb(port->write_urb);
<------>usb_kill_urb(port->read_urb);
 
<------>iuu_led(port, 0, 0, 0xF000, 0xFF);
}
 
static void iuu_init_termios(struct tty_struct *tty)
{
<------>tty->termios.c_cflag = B9600 | CS8 | CSTOPB | CREAD | PARENB | CLOCAL;
<------>tty->termios.c_ispeed = 9600;
<------>tty->termios.c_ospeed = 9600;
<------>tty->termios.c_lflag = 0;
<------>tty->termios.c_oflag = 0;
<------>tty->termios.c_iflag = 0;
}
 
static int iuu_open(struct tty_struct *tty, struct usb_serial_port *port)
{
<------>struct usb_serial *serial = port->serial;
<------>struct device *dev = &port->dev;
<------>int result;
<------>int baud;
<------>u32 actual;
<------>struct iuu_private *priv = usb_get_serial_port_data(port);
 
<------>baud = tty->termios.c_ospeed;
 
<------>dev_dbg(dev, "%s - baud %d\n", __func__, baud);
<------>usb_clear_halt(serial->dev, port->write_urb->pipe);
<------>usb_clear_halt(serial->dev, port->read_urb->pipe);
 
<------>priv->poll = 0;
 
#define SOUP(a, b, c, d)  do { \
<------>result = usb_control_msg(port->serial->dev,	\
<------><------><------><------>usb_sndctrlpipe(port->serial->dev, 0),	\
<------><------><------><------>b, a, c, d, NULL, 0, 1000); \
<------>dev_dbg(dev, "0x%x:0x%x:0x%x:0x%x  %d\n", a, b, c, d, result); } while (0)
 
<------>/*  This is not UART related but IUU USB driver related or something */
<------>/*  like that. Basically no IUU will accept any commands from the USB */
<------>/*  host unless it has received the following message */
<------>/* sprintf(buf ,"%c%c%c%c",0x03,0x02,0x02,0x0); */
 
<------>SOUP(0x03, 0x02, 0x02, 0x0);
 
<------>iuu_led(port, 0xF000, 0xF000, 0, 0xFF);
<------>iuu_uart_on(port);
<------>if (boost < 100)
<------><------>boost = 100;
<------>priv->boost = boost;
<------>switch (clockmode) {
<------>case 2:		/*  3.680 Mhz */
<------><------>priv->clk = IUU_CLK_3680000;
<------><------>iuu_clk(port, IUU_CLK_3680000 * boost / 100);
<------><------>result =
<------><------>    iuu_uart_baud(port, baud * boost / 100, &actual,
<------><------><------><------>  IUU_PARITY_EVEN);
<------><------>break;
<------>case 3:		/*  6.00 Mhz */
<------><------>iuu_clk(port, IUU_CLK_6000000 * boost / 100);
<------><------>priv->clk = IUU_CLK_6000000;
<------><------>/* Ratio of 6000000 to 3500000 for baud 9600 */
<------><------>result =
<------><------>    iuu_uart_baud(port, 16457 * boost / 100, &actual,
<------><------><------><------>  IUU_PARITY_EVEN);
<------><------>break;
<------>default:		/*  3.579 Mhz */
<------><------>iuu_clk(port, IUU_CLK_3579000 * boost / 100);
<------><------>priv->clk = IUU_CLK_3579000;
<------><------>result =
<------><------>    iuu_uart_baud(port, baud * boost / 100, &actual,
<------><------><------><------>  IUU_PARITY_EVEN);
<------>}
 
<------>/* set the cardin cardout signals */
<------>switch (cdmode) {
<------>case 0:
<------><------>iuu_cardin = 0;
<------><------>iuu_cardout = 0;
<------><------>break;
<------>case 1:
<------><------>iuu_cardin = TIOCM_CD;
<------><------>iuu_cardout =  0;
<------><------>break;
<------>case 2:
<------><------>iuu_cardin = 0;
<------><------>iuu_cardout = TIOCM_CD;
<------><------>break;
<------>case 3:
<------><------>iuu_cardin = TIOCM_DSR;
<------><------>iuu_cardout = 0;
<------><------>break;
<------>case 4:
<------><------>iuu_cardin = 0;
<------><------>iuu_cardout = TIOCM_DSR;
<------><------>break;
<------>case 5:
<------><------>iuu_cardin = TIOCM_CTS;
<------><------>iuu_cardout = 0;
<------><------>break;
<------>case 6:
<------><------>iuu_cardin = 0;
<------><------>iuu_cardout = TIOCM_CTS;
<------><------>break;
<------>case 7:
<------><------>iuu_cardin = TIOCM_RNG;
<------><------>iuu_cardout = 0;
<------><------>break;
<------>case 8:
<------><------>iuu_cardin = 0;
<------><------>iuu_cardout = TIOCM_RNG;
<------>}
 
<------>iuu_uart_flush(port);
 
<------>dev_dbg(dev, "%s - initialization done\n", __func__);
 
<------>memset(port->write_urb->transfer_buffer, IUU_UART_RX, 1);
<------>usb_fill_bulk_urb(port->write_urb, port->serial->dev,
<------><------><------>  usb_sndbulkpipe(port->serial->dev,
<------><------><------><------><------>  port->bulk_out_endpointAddress),
<------><------><------>  port->write_urb->transfer_buffer, 1,
<------><------><------>  read_rxcmd_callback, port);
<------>result = usb_submit_urb(port->write_urb, GFP_KERNEL);
<------>if (result) {
<------><------>dev_err(dev, "%s - failed submitting read urb, error %d\n", __func__, result);
<------><------>iuu_close(port);
<------>} else {
<------><------>dev_dbg(dev, "%s - rxcmd OK\n", __func__);
<------>}
 
<------>return result;
}
 
/* how to change VCC */
static int iuu_vcc_set(struct usb_serial_port *port, unsigned int vcc)
{
<------>int status;
<------>u8 *buf;
 
<------>buf = kmalloc(5, GFP_KERNEL);
<------>if (!buf)
<------><------>return -ENOMEM;
 
<------>buf[0] = IUU_SET_VCC;
<------>buf[1] = vcc & 0xFF;
<------>buf[2] = (vcc >> 8) & 0xFF;
<------>buf[3] = (vcc >> 16) & 0xFF;
<------>buf[4] = (vcc >> 24) & 0xFF;
 
<------>status = bulk_immediate(port, buf, 5);
<------>kfree(buf);
 
<------>if (status != IUU_OPERATION_OK)
<------><------>dev_dbg(&port->dev, "%s - vcc error status = %2x\n", __func__, status);
<------>else
<------><------>dev_dbg(&port->dev, "%s - vcc OK !\n", __func__);
 
<------>return status;
}
 
/*
 * Sysfs Attributes
 */
 
static ssize_t vcc_mode_show(struct device *dev,
<------>struct device_attribute *attr, char *buf)
{
<------>struct usb_serial_port *port = to_usb_serial_port(dev);
<------>struct iuu_private *priv = usb_get_serial_port_data(port);
 
<------>return sprintf(buf, "%d\n", priv->vcc);
}
 
static ssize_t vcc_mode_store(struct device *dev,
<------>struct device_attribute *attr, const char *buf, size_t count)
{
<------>struct usb_serial_port *port = to_usb_serial_port(dev);
<------>struct iuu_private *priv = usb_get_serial_port_data(port);
<------>unsigned long v;
 
<------>if (kstrtoul(buf, 10, &v)) {
<------><------>dev_err(dev, "%s - vcc_mode: %s is not a unsigned long\n",
<------><------><------><------>__func__, buf);
<------><------>goto fail_store_vcc_mode;
<------>}
 
<------>dev_dbg(dev, "%s: setting vcc_mode = %ld\n", __func__, v);
 
<------>if ((v != 3) && (v != 5)) {
<------><------>dev_err(dev, "%s - vcc_mode %ld is invalid\n", __func__, v);
<------>} else {
<------><------>iuu_vcc_set(port, v);
<------><------>priv->vcc = v;
<------>}
fail_store_vcc_mode:
<------>return count;
}
static DEVICE_ATTR_RW(vcc_mode);
 
static int iuu_create_sysfs_attrs(struct usb_serial_port *port)
{
<------>return device_create_file(&port->dev, &dev_attr_vcc_mode);
}
 
static int iuu_remove_sysfs_attrs(struct usb_serial_port *port)
{
<------>device_remove_file(&port->dev, &dev_attr_vcc_mode);
<------>return 0;
}
 
/*
 * End Sysfs Attributes
 */
 
static struct usb_serial_driver iuu_device = {
<------>.driver = {
<------><------>   .owner = THIS_MODULE,
<------><------>   .name = "iuu_phoenix",
<------><------>   },
<------>.id_table = id_table,
<------>.num_ports = 1,
<------>.num_bulk_in = 1,
<------>.num_bulk_out = 1,
<------>.bulk_in_size = 512,
<------>.bulk_out_size = 512,
<------>.open = iuu_open,
<------>.close = iuu_close,
<------>.write = iuu_uart_write,
<------>.read_bulk_callback = iuu_uart_read_callback,
<------>.tiocmget = iuu_tiocmget,
<------>.tiocmset = iuu_tiocmset,
<------>.set_termios = iuu_set_termios,
<------>.init_termios = iuu_init_termios,
<------>.port_probe = iuu_port_probe,
<------>.port_remove = iuu_port_remove,
};
 
static struct usb_serial_driver * const serial_drivers[] = {
<------>&iuu_device, NULL
};
 
module_usb_serial_driver(serial_drivers, id_table);
 
MODULE_AUTHOR("Alain Degreffe eczema@ecze.com");
 
MODULE_DESCRIPTION(DRIVER_DESC);
MODULE_LICENSE("GPL");
 
module_param(xmas, bool, S_IRUGO | S_IWUSR);
MODULE_PARM_DESC(xmas, "Xmas colors enabled or not");
 
module_param(boost, int, S_IRUGO | S_IWUSR);
MODULE_PARM_DESC(boost, "Card overclock boost (in percent 100-500)");
 
module_param(clockmode, int, S_IRUGO | S_IWUSR);
MODULE_PARM_DESC(clockmode, "Card clock mode (1=3.579 MHz, 2=3.680 MHz, "
<------><------>"3=6 Mhz)");
 
module_param(cdmode, int, S_IRUGO | S_IWUSR);
MODULE_PARM_DESC(cdmode, "Card detect mode (0=none, 1=CD, 2=!CD, 3=DSR, "
<------><------> "4=!DSR, 5=CTS, 6=!CTS, 7=RING, 8=!RING)");
 
module_param(vcc_default, int, S_IRUGO | S_IWUSR);
MODULE_PARM_DESC(vcc_default, "Set default VCC (either 3 for 3.3V or 5 "
<------><------>"for 5V). Default to 5.");