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89b5439790
Signed-off-by: James Courtier-Dutton <James@superbug.co.uk> Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>
1349 lines
32 KiB
C
1349 lines
32 KiB
C
/*
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* Infinity Unlimited USB Phoenix driver
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*
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* Copyright (C) 2010 James Courtier-Dutton (James@superbug.co.uk)
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* Copyright (C) 2007 Alain Degreffe (eczema@ecze.com)
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*
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* Original code taken from iuutool (Copyright (C) 2006 Juan Carlos Borrás)
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*
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* This program is free software; you can redistribute it and/or modify
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* it under the terms of the GNU General Public License as published by
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* the Free Software Foundation; either version 2 of the License, or
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* (at your option) any later version.
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*
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* And tested with help of WB Electronics
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*
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*/
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#include <linux/kernel.h>
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#include <linux/errno.h>
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#include <linux/init.h>
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#include <linux/slab.h>
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#include <linux/tty.h>
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#include <linux/tty_driver.h>
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#include <linux/tty_flip.h>
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#include <linux/serial.h>
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#include <linux/module.h>
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#include <linux/moduleparam.h>
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#include <linux/spinlock.h>
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#include <linux/uaccess.h>
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#include <linux/usb.h>
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#include <linux/usb/serial.h>
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#include "iuu_phoenix.h"
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#include <linux/random.h>
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#ifdef CONFIG_USB_SERIAL_DEBUG
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static int debug = 1;
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#else
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static int debug;
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#endif
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/*
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* Version Information
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*/
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#define DRIVER_VERSION "v0.12"
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#define DRIVER_DESC "Infinity USB Unlimited Phoenix driver"
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static const struct usb_device_id id_table[] = {
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{USB_DEVICE(IUU_USB_VENDOR_ID, IUU_USB_PRODUCT_ID)},
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{} /* Terminating entry */
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};
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MODULE_DEVICE_TABLE(usb, id_table);
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static struct usb_driver iuu_driver = {
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.name = "iuu_phoenix",
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.probe = usb_serial_probe,
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.disconnect = usb_serial_disconnect,
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.id_table = id_table,
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.no_dynamic_id = 1,
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};
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/* turbo parameter */
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static int boost = 100;
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static int clockmode = 1;
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static int cdmode = 1;
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static int iuu_cardin;
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static int iuu_cardout;
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static int xmas;
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static int vcc_default = 5;
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static void read_rxcmd_callback(struct urb *urb);
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struct iuu_private {
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spinlock_t lock; /* store irq state */
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wait_queue_head_t delta_msr_wait;
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u8 line_status;
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int tiostatus; /* store IUART SIGNAL for tiocmget call */
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u8 reset; /* if 1 reset is needed */
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int poll; /* number of poll */
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u8 *writebuf; /* buffer for writing to device */
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int writelen; /* num of byte to write to device */
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u8 *buf; /* used for initialize speed */
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u8 *dbgbuf; /* debug buffer */
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u8 len;
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int vcc; /* vcc (either 3 or 5 V) */
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u32 baud;
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u32 boost;
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u32 clk;
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};
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static void iuu_free_buf(struct iuu_private *priv)
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{
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kfree(priv->buf);
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kfree(priv->dbgbuf);
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kfree(priv->writebuf);
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}
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static int iuu_alloc_buf(struct iuu_private *priv)
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{
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priv->buf = kzalloc(256, GFP_KERNEL);
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priv->dbgbuf = kzalloc(256, GFP_KERNEL);
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priv->writebuf = kzalloc(256, GFP_KERNEL);
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if (!priv->buf || !priv->dbgbuf || !priv->writebuf) {
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iuu_free_buf(priv);
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dbg("%s problem allocation buffer", __func__);
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return -ENOMEM;
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}
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dbg("%s - Privates buffers allocation success", __func__);
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return 0;
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}
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static int iuu_startup(struct usb_serial *serial)
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{
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struct iuu_private *priv;
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priv = kzalloc(sizeof(struct iuu_private), GFP_KERNEL);
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dbg("%s- priv allocation success", __func__);
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if (!priv)
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return -ENOMEM;
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if (iuu_alloc_buf(priv)) {
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kfree(priv);
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return -ENOMEM;
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}
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priv->vcc = vcc_default;
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spin_lock_init(&priv->lock);
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init_waitqueue_head(&priv->delta_msr_wait);
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usb_set_serial_port_data(serial->port[0], priv);
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return 0;
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}
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/* Release function */
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static void iuu_release(struct usb_serial *serial)
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{
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struct usb_serial_port *port = serial->port[0];
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struct iuu_private *priv = usb_get_serial_port_data(port);
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if (!port)
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return;
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dbg("%s", __func__);
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if (priv) {
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iuu_free_buf(priv);
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dbg("%s - I will free all", __func__);
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usb_set_serial_port_data(port, NULL);
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dbg("%s - priv is not anymore in port structure", __func__);
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kfree(priv);
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dbg("%s priv is now kfree", __func__);
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}
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}
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static int iuu_tiocmset(struct tty_struct *tty, struct file *file,
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unsigned int set, unsigned int clear)
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{
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struct usb_serial_port *port = tty->driver_data;
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struct iuu_private *priv = usb_get_serial_port_data(port);
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unsigned long flags;
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/* FIXME: locking on tiomstatus */
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dbg("%s (%d) msg : SET = 0x%04x, CLEAR = 0x%04x ", __func__,
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port->number, set, clear);
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spin_lock_irqsave(&priv->lock, flags);
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if ((set & TIOCM_RTS) && !(priv->tiostatus == TIOCM_RTS)) {
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dbg("%s TIOCMSET RESET called !!!", __func__);
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priv->reset = 1;
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}
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if (set & TIOCM_RTS)
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priv->tiostatus = TIOCM_RTS;
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spin_unlock_irqrestore(&priv->lock, flags);
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return 0;
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}
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/* This is used to provide a carrier detect mechanism
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* When a card is present, the response is 0x00
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* When no card , the reader respond with TIOCM_CD
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* This is known as CD autodetect mechanism
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*/
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static int iuu_tiocmget(struct tty_struct *tty, struct file *file)
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{
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struct usb_serial_port *port = tty->driver_data;
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struct iuu_private *priv = usb_get_serial_port_data(port);
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unsigned long flags;
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int rc;
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spin_lock_irqsave(&priv->lock, flags);
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rc = priv->tiostatus;
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spin_unlock_irqrestore(&priv->lock, flags);
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return rc;
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}
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static void iuu_rxcmd(struct urb *urb)
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{
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struct usb_serial_port *port = urb->context;
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int result;
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int status = urb->status;
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dbg("%s - enter", __func__);
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if (status) {
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dbg("%s - status = %d", __func__, status);
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/* error stop all */
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return;
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}
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memset(port->write_urb->transfer_buffer, IUU_UART_RX, 1);
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usb_fill_bulk_urb(port->write_urb, port->serial->dev,
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usb_sndbulkpipe(port->serial->dev,
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port->bulk_out_endpointAddress),
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port->write_urb->transfer_buffer, 1,
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read_rxcmd_callback, port);
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result = usb_submit_urb(port->write_urb, GFP_ATOMIC);
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}
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static int iuu_reset(struct usb_serial_port *port, u8 wt)
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{
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struct iuu_private *priv = usb_get_serial_port_data(port);
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int result;
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char *buf_ptr = port->write_urb->transfer_buffer;
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dbg("%s - enter", __func__);
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/* Prepare the reset sequence */
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*buf_ptr++ = IUU_RST_SET;
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*buf_ptr++ = IUU_DELAY_MS;
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*buf_ptr++ = wt;
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*buf_ptr = IUU_RST_CLEAR;
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/* send the sequence */
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usb_fill_bulk_urb(port->write_urb,
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port->serial->dev,
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usb_sndbulkpipe(port->serial->dev,
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port->bulk_out_endpointAddress),
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port->write_urb->transfer_buffer, 4, iuu_rxcmd, port);
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result = usb_submit_urb(port->write_urb, GFP_ATOMIC);
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priv->reset = 0;
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return result;
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}
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/* Status Function
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* Return value is
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* 0x00 = no card
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* 0x01 = smartcard
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* 0x02 = sim card
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*/
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static void iuu_update_status_callback(struct urb *urb)
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{
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struct usb_serial_port *port = urb->context;
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struct iuu_private *priv = usb_get_serial_port_data(port);
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u8 *st;
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int status = urb->status;
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dbg("%s - enter", __func__);
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if (status) {
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dbg("%s - status = %d", __func__, status);
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/* error stop all */
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return;
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}
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st = urb->transfer_buffer;
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dbg("%s - enter", __func__);
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if (urb->actual_length == 1) {
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switch (st[0]) {
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case 0x1:
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priv->tiostatus = iuu_cardout;
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break;
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case 0x0:
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priv->tiostatus = iuu_cardin;
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break;
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default:
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priv->tiostatus = iuu_cardin;
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}
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}
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iuu_rxcmd(urb);
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}
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static void iuu_status_callback(struct urb *urb)
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{
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struct usb_serial_port *port = urb->context;
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int result;
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int status = urb->status;
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dbg("%s - status = %d", __func__, status);
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usb_fill_bulk_urb(port->read_urb, port->serial->dev,
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usb_rcvbulkpipe(port->serial->dev,
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port->bulk_in_endpointAddress),
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port->read_urb->transfer_buffer, 256,
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iuu_update_status_callback, port);
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result = usb_submit_urb(port->read_urb, GFP_ATOMIC);
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}
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static int iuu_status(struct usb_serial_port *port)
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{
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int result;
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dbg("%s - enter", __func__);
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memset(port->write_urb->transfer_buffer, IUU_GET_STATE_REGISTER, 1);
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usb_fill_bulk_urb(port->write_urb, port->serial->dev,
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usb_sndbulkpipe(port->serial->dev,
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port->bulk_out_endpointAddress),
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port->write_urb->transfer_buffer, 1,
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iuu_status_callback, port);
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result = usb_submit_urb(port->write_urb, GFP_ATOMIC);
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return result;
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}
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static int bulk_immediate(struct usb_serial_port *port, u8 *buf, u8 count)
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{
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int status;
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struct usb_serial *serial = port->serial;
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int actual = 0;
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dbg("%s - enter", __func__);
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/* send the data out the bulk port */
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status =
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usb_bulk_msg(serial->dev,
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usb_sndbulkpipe(serial->dev,
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port->bulk_out_endpointAddress), buf,
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count, &actual, HZ * 1);
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if (status != IUU_OPERATION_OK)
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dbg("%s - error = %2x", __func__, status);
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else
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dbg("%s - write OK !", __func__);
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return status;
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}
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static int read_immediate(struct usb_serial_port *port, u8 *buf, u8 count)
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{
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int status;
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struct usb_serial *serial = port->serial;
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int actual = 0;
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dbg("%s - enter", __func__);
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/* send the data out the bulk port */
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status =
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usb_bulk_msg(serial->dev,
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usb_rcvbulkpipe(serial->dev,
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port->bulk_in_endpointAddress), buf,
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count, &actual, HZ * 1);
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if (status != IUU_OPERATION_OK)
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dbg("%s - error = %2x", __func__, status);
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else
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dbg("%s - read OK !", __func__);
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return status;
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}
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static int iuu_led(struct usb_serial_port *port, unsigned int R,
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unsigned int G, unsigned int B, u8 f)
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{
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int status;
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u8 *buf;
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buf = kmalloc(8, GFP_KERNEL);
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if (!buf)
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return -ENOMEM;
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dbg("%s - enter", __func__);
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buf[0] = IUU_SET_LED;
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buf[1] = R & 0xFF;
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buf[2] = (R >> 8) & 0xFF;
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buf[3] = G & 0xFF;
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buf[4] = (G >> 8) & 0xFF;
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buf[5] = B & 0xFF;
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buf[6] = (B >> 8) & 0xFF;
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buf[7] = f;
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status = bulk_immediate(port, buf, 8);
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kfree(buf);
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if (status != IUU_OPERATION_OK)
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dbg("%s - led error status = %2x", __func__, status);
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else
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dbg("%s - led OK !", __func__);
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return IUU_OPERATION_OK;
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}
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static void iuu_rgbf_fill_buffer(u8 *buf, u8 r1, u8 r2, u8 g1, u8 g2, u8 b1,
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u8 b2, u8 freq)
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{
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*buf++ = IUU_SET_LED;
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*buf++ = r1;
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*buf++ = r2;
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*buf++ = g1;
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*buf++ = g2;
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*buf++ = b1;
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*buf++ = b2;
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*buf = freq;
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}
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static void iuu_led_activity_on(struct urb *urb)
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{
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struct usb_serial_port *port = urb->context;
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int result;
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char *buf_ptr = port->write_urb->transfer_buffer;
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*buf_ptr++ = IUU_SET_LED;
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if (xmas == 1) {
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get_random_bytes(buf_ptr, 6);
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*(buf_ptr+7) = 1;
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} else {
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iuu_rgbf_fill_buffer(buf_ptr, 255, 255, 0, 0, 0, 0, 255);
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}
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usb_fill_bulk_urb(port->write_urb, port->serial->dev,
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usb_sndbulkpipe(port->serial->dev,
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port->bulk_out_endpointAddress),
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port->write_urb->transfer_buffer, 8 ,
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iuu_rxcmd, port);
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result = usb_submit_urb(port->write_urb, GFP_ATOMIC);
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}
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static void iuu_led_activity_off(struct urb *urb)
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{
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struct usb_serial_port *port = urb->context;
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int result;
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char *buf_ptr = port->write_urb->transfer_buffer;
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if (xmas == 1) {
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iuu_rxcmd(urb);
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return;
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} else {
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*buf_ptr++ = IUU_SET_LED;
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iuu_rgbf_fill_buffer(buf_ptr, 0, 0, 255, 255, 0, 0, 255);
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}
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usb_fill_bulk_urb(port->write_urb, port->serial->dev,
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usb_sndbulkpipe(port->serial->dev,
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port->bulk_out_endpointAddress),
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port->write_urb->transfer_buffer, 8 ,
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iuu_rxcmd, port);
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result = usb_submit_urb(port->write_urb, GFP_ATOMIC);
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}
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|
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static int iuu_clk(struct usb_serial_port *port, int dwFrq)
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{
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int status;
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struct iuu_private *priv = usb_get_serial_port_data(port);
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int Count = 0;
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u8 FrqGenAdr = 0x69;
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u8 DIV = 0; /* 8bit */
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u8 XDRV = 0; /* 8bit */
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u8 PUMP = 0; /* 3bit */
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u8 PBmsb = 0; /* 2bit */
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u8 PBlsb = 0; /* 8bit */
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u8 PO = 0; /* 1bit */
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u8 Q = 0; /* 7bit */
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/* 24bit = 3bytes */
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unsigned int P = 0;
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unsigned int P2 = 0;
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int frq = (int)dwFrq;
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dbg("%s - enter", __func__);
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if (frq == 0) {
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priv->buf[Count++] = IUU_UART_WRITE_I2C;
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priv->buf[Count++] = FrqGenAdr << 1;
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priv->buf[Count++] = 0x09;
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priv->buf[Count++] = 0x00;
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status = bulk_immediate(port, (u8 *) priv->buf, Count);
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if (status != 0) {
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dbg("%s - write error ", __func__);
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return status;
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}
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} else if (frq == 3579000) {
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DIV = 100;
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P = 1193;
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Q = 40;
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XDRV = 0;
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} else if (frq == 3680000) {
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DIV = 105;
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P = 161;
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Q = 5;
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XDRV = 0;
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} else if (frq == 6000000) {
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DIV = 66;
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P = 66;
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Q = 2;
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XDRV = 0x28;
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} else {
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unsigned int result = 0;
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unsigned int tmp = 0;
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unsigned int check;
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unsigned int check2;
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char found = 0x00;
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unsigned int lQ = 2;
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unsigned int lP = 2055;
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unsigned int lDiv = 4;
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for (lQ = 2; lQ <= 47 && !found; lQ++)
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for (lP = 2055; lP >= 8 && !found; lP--)
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for (lDiv = 4; lDiv <= 127 && !found; lDiv++) {
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tmp = (12000000 / lDiv) * (lP / lQ);
|
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if (abs((int)(tmp - frq)) <
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abs((int)(frq - result))) {
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check2 = (12000000 / lQ);
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if (check2 < 250000)
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continue;
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check = (12000000 / lQ) * lP;
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if (check > 400000000)
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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;
|
|
DIV = DIV;
|
|
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)
|
|
dbg("%s - write error ", __func__);
|
|
return status;
|
|
}
|
|
|
|
static int iuu_uart_flush(struct usb_serial_port *port)
|
|
{
|
|
int i;
|
|
int status;
|
|
u8 rxcmd = IUU_UART_RX;
|
|
struct iuu_private *priv = usb_get_serial_port_data(port);
|
|
|
|
dbg("%s - enter", __func__);
|
|
|
|
if (iuu_led(port, 0xF000, 0, 0, 0xFF) < 0)
|
|
return -EIO;
|
|
|
|
for (i = 0; i < 2; i++) {
|
|
status = bulk_immediate(port, &rxcmd, 1);
|
|
if (status != IUU_OPERATION_OK) {
|
|
dbg("%s - uart_flush_write error", __func__);
|
|
return status;
|
|
}
|
|
|
|
status = read_immediate(port, &priv->len, 1);
|
|
if (status != IUU_OPERATION_OK) {
|
|
dbg("%s - uart_flush_read error", __func__);
|
|
return status;
|
|
}
|
|
|
|
if (priv->len > 0) {
|
|
dbg("%s - uart_flush datalen is : %i ", __func__,
|
|
priv->len);
|
|
status = read_immediate(port, priv->buf, priv->len);
|
|
if (status != IUU_OPERATION_OK) {
|
|
dbg("%s - uart_flush_read error", __func__);
|
|
return status;
|
|
}
|
|
}
|
|
}
|
|
dbg("%s - uart_flush_read OK!", __func__);
|
|
iuu_led(port, 0, 0xF000, 0, 0xFF);
|
|
return status;
|
|
}
|
|
|
|
static void read_buf_callback(struct urb *urb)
|
|
{
|
|
struct usb_serial_port *port = urb->context;
|
|
unsigned char *data = urb->transfer_buffer;
|
|
struct tty_struct *tty;
|
|
int status = urb->status;
|
|
|
|
dbg("%s - status = %d", __func__, status);
|
|
|
|
if (status) {
|
|
if (status == -EPROTO) {
|
|
/* reschedule needed */
|
|
}
|
|
return;
|
|
}
|
|
|
|
dbg("%s - %i chars to write", __func__, urb->actual_length);
|
|
tty = tty_port_tty_get(&port->port);
|
|
if (data == NULL)
|
|
dbg("%s - data is NULL !!!", __func__);
|
|
if (tty && urb->actual_length && data) {
|
|
tty_insert_flip_string(tty, data, urb->actual_length);
|
|
tty_flip_buffer_push(tty);
|
|
}
|
|
tty_kref_put(tty);
|
|
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 i;
|
|
int buf_len;
|
|
char *buf_ptr = port->write_urb->transfer_buffer;
|
|
dbg("%s - enter", __func__);
|
|
|
|
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);
|
|
if (debug == 1) {
|
|
for (i = 0; i < buf_len; i++)
|
|
sprintf(priv->dbgbuf + i*2 ,
|
|
"%02X", priv->writebuf[i]);
|
|
priv->dbgbuf[buf_len+i*2] = 0;
|
|
dbg("%s - writing %i chars : %s", __func__,
|
|
buf_len, priv->dbgbuf);
|
|
}
|
|
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;
|
|
dbg("%s - enter", __func__);
|
|
|
|
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++;
|
|
|
|
dbg("%s - enter", __func__);
|
|
|
|
if (status) {
|
|
dbg("%s - status = %d", __func__, status);
|
|
/* error stop all */
|
|
return;
|
|
}
|
|
if (data == NULL)
|
|
dbg("%s - data is NULL !!!", __func__);
|
|
|
|
if (urb->actual_length == 1 && data != NULL)
|
|
len = (int) data[0];
|
|
|
|
if (urb->actual_length > 1) {
|
|
dbg("%s - urb->actual_length = %i", __func__,
|
|
urb->actual_length);
|
|
error = 1;
|
|
return;
|
|
}
|
|
/* if len > 0 call readbuf */
|
|
|
|
if (len > 0 && error == 0) {
|
|
dbg("%s - call read buf - len to read is %i ",
|
|
__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 */
|
|
dbg("%s - rxcmd recall", __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;
|
|
dbg("%s - enter", __func__);
|
|
|
|
if (count > 256)
|
|
return -ENOMEM;
|
|
|
|
spin_lock_irqsave(&priv->lock, flags);
|
|
|
|
/* fill the buffer */
|
|
memcpy(priv->writebuf + priv->writelen, buf, count);
|
|
priv->writelen += count;
|
|
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;
|
|
|
|
dbg("%s - status = %d", __func__, 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);
|
|
dbg("%s - submit result = %d", __func__, result);
|
|
return;
|
|
}
|
|
|
|
static int iuu_uart_on(struct usb_serial_port *port)
|
|
{
|
|
int status;
|
|
u8 *buf;
|
|
|
|
buf = kmalloc(sizeof(u8) * 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) {
|
|
dbg("%s - uart_on error", __func__);
|
|
goto uart_enable_failed;
|
|
}
|
|
/* iuu_reset() the card after iuu_uart_on() */
|
|
status = iuu_uart_flush(port);
|
|
if (status != IUU_OPERATION_OK)
|
|
dbg("%s - uart_flush error", __func__);
|
|
uart_enable_failed:
|
|
kfree(buf);
|
|
return status;
|
|
}
|
|
|
|
/* Diables 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)
|
|
dbg("%s - uart_off error", __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;
|
|
|
|
dbg("%s - enter baud_base=%d", __func__, baud_base);
|
|
dataout = kmalloc(sizeof(u8) * 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)
|
|
dbg("%s - uart_off error", __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;
|
|
|
|
dbg("%s - enter c_ospeed or baud=%d", __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); */
|
|
struct usb_serial *serial;
|
|
|
|
serial = port->serial;
|
|
if (!serial)
|
|
return;
|
|
|
|
dbg("%s - port %d", __func__, port->number);
|
|
|
|
iuu_uart_off(port);
|
|
if (serial->dev) {
|
|
/* free writebuf */
|
|
/* shutdown our urbs */
|
|
dbg("%s - shutting down urbs", __func__);
|
|
usb_kill_urb(port->write_urb);
|
|
usb_kill_urb(port->read_urb);
|
|
usb_kill_urb(port->interrupt_in_urb);
|
|
iuu_led(port, 0, 0, 0xF000, 0xFF);
|
|
}
|
|
}
|
|
|
|
static void iuu_init_termios(struct tty_struct *tty)
|
|
{
|
|
dbg("%s - enter", __func__);
|
|
*(tty->termios) = tty_std_termios;
|
|
tty->termios->c_cflag = CLOCAL | CREAD | CS8 | B9600
|
|
| TIOCM_CTS | CSTOPB | PARENB;
|
|
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;
|
|
u8 *buf;
|
|
int result;
|
|
int baud;
|
|
u32 actual;
|
|
struct iuu_private *priv = usb_get_serial_port_data(port);
|
|
|
|
baud = tty->termios->c_ospeed;
|
|
tty->termios->c_ispeed = baud;
|
|
/* Re-encode speed */
|
|
tty_encode_baud_rate(tty, baud, baud);
|
|
|
|
dbg("%s - port %d, baud %d", __func__, port->number, baud);
|
|
usb_clear_halt(serial->dev, port->write_urb->pipe);
|
|
usb_clear_halt(serial->dev, port->read_urb->pipe);
|
|
|
|
buf = kmalloc(10, GFP_KERNEL);
|
|
if (buf == NULL)
|
|
return -ENOMEM;
|
|
|
|
priv->poll = 0;
|
|
|
|
/* initialize writebuf */
|
|
#define FISH(a, b, c, d) do { \
|
|
result = usb_control_msg(port->serial->dev, \
|
|
usb_rcvctrlpipe(port->serial->dev, 0), \
|
|
b, a, c, d, buf, 1, 1000); \
|
|
dbg("0x%x:0x%x:0x%x:0x%x %d - %x", a, b, c, d, result, \
|
|
buf[0]); } while (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); \
|
|
dbg("0x%x:0x%x:0x%x:0x%x %d", 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);
|
|
kfree(buf);
|
|
iuu_led(port, 0xF000, 0xF000, 0, 0xFF);
|
|
iuu_uart_on(port);
|
|
if (boost < 100)
|
|
boost = 100;
|
|
priv->boost = boost;
|
|
priv->baud = baud;
|
|
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);
|
|
|
|
dbg("%s - initialization done", __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(&port->dev, "%s - failed submitting read urb,"
|
|
" error %d\n", __func__, result);
|
|
iuu_close(port);
|
|
return -EPROTO;
|
|
} else {
|
|
dbg("%s - rxcmd OK", __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;
|
|
|
|
dbg("%s - enter", __func__);
|
|
|
|
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)
|
|
dbg("%s - vcc error status = %2x", __func__, status);
|
|
else
|
|
dbg("%s - vcc OK !", __func__);
|
|
|
|
return status;
|
|
}
|
|
|
|
/*
|
|
* Sysfs Attributes
|
|
*/
|
|
|
|
static ssize_t show_vcc_mode(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 store_vcc_mode(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 (strict_strtoul(buf, 10, &v)) {
|
|
dev_err(dev, "%s - vcc_mode: %s is not a unsigned long\n",
|
|
__func__, buf);
|
|
goto fail_store_vcc_mode;
|
|
}
|
|
|
|
dbg("%s: setting vcc_mode = %ld", __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(vcc_mode, S_IRUSR | S_IWUSR, show_vcc_mode,
|
|
store_vcc_mode);
|
|
|
|
static int iuu_create_sysfs_attrs(struct usb_serial_port *port)
|
|
{
|
|
dbg("%s", __func__);
|
|
|
|
return device_create_file(&port->dev, &dev_attr_vcc_mode);
|
|
}
|
|
|
|
static int iuu_remove_sysfs_attrs(struct usb_serial_port *port)
|
|
{
|
|
dbg("%s", __func__);
|
|
|
|
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,
|
|
.bulk_in_size = 512,
|
|
.bulk_out_size = 512,
|
|
.port_probe = iuu_create_sysfs_attrs,
|
|
.port_remove = iuu_remove_sysfs_attrs,
|
|
.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,
|
|
.attach = iuu_startup,
|
|
.release = iuu_release,
|
|
};
|
|
|
|
static int __init iuu_init(void)
|
|
{
|
|
int retval;
|
|
retval = usb_serial_register(&iuu_device);
|
|
if (retval)
|
|
goto failed_usb_serial_register;
|
|
retval = usb_register(&iuu_driver);
|
|
if (retval)
|
|
goto failed_usb_register;
|
|
printk(KERN_INFO KBUILD_MODNAME ": " DRIVER_VERSION ":"
|
|
DRIVER_DESC "\n");
|
|
return 0;
|
|
failed_usb_register:
|
|
usb_serial_deregister(&iuu_device);
|
|
failed_usb_serial_register:
|
|
return retval;
|
|
}
|
|
|
|
static void __exit iuu_exit(void)
|
|
{
|
|
usb_deregister(&iuu_driver);
|
|
usb_serial_deregister(&iuu_device);
|
|
}
|
|
|
|
module_init(iuu_init);
|
|
module_exit(iuu_exit);
|
|
|
|
MODULE_AUTHOR("Alain Degreffe eczema@ecze.com");
|
|
|
|
MODULE_DESCRIPTION(DRIVER_DESC);
|
|
MODULE_LICENSE("GPL");
|
|
|
|
MODULE_VERSION(DRIVER_VERSION);
|
|
module_param(debug, bool, S_IRUGO | S_IWUSR);
|
|
MODULE_PARM_DESC(debug, "Debug enabled or not");
|
|
|
|
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.");
|