# Channel table for São Francisco do Conde - BA - Brazil
# Source/* $Id$
* $URL$
*
* driver for USBHUB
*
* Copyright (C) 2006 Ernst Bachmann <e.bachmann@xebec.de>
* Copyright (C) 2004,2006 The LCD4Linux Team <lcd4linux-devel@users.sourceforge.net>
*
* Based on the USBLCD driver Copyright (C) 2003 Michael Reinelt <michael@reinelt.co.at>
*
* This file is part of LCD4Linux.
*
* LCD4Linux is free software; you can redistribute it and/or modify
* it under the terms of the GNU General Public License as published by
* the Free Software Foundation; either version 2, or (at your option)
* any later version.
*
* LCD4Linux is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
* GNU General Public License for more details.
*
* You should have received a copy of the GNU General Public License
* along with this program; if not, write to the Free Software
* Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.
*
*/
/*
*
* exported fuctions:
*
* struct DRIVER drv_USBHUB
*
*/
#include "config.h"
#ifdef HAVE_USB_H
# include <usb.h>
#else
# error The USB-HUB driver only makes sense with USB support
#endif
#include "debug.h"
#include "cfg.h"
#include "qprintf.h"
#include "udelay.h"
#include "drv.h"
#include "drv_generic_gpio.h"
#define HUB_CONTROL_PORT 0x23
#define HUB_SET_FEATURE 3
#define HUB_SET_INDICATOR 22
static char Name[] = "USBHUB";
/* TODO: Better not specify defaults here,
* instead look for the first suitable HUB arround if
* no Vendor/Product specified in config.
*/
static unsigned int hubVendor = 0x0409;
static unsigned int hubProduct = 0x0058;
static usb_dev_handle *hub = NULL;
typedef struct _usb_hub_descriptor {
u_int8_t bLength;
u_int8_t bDescriptorType;
u_int8_t nNbrPorts;
u_int8_t wHubCharacteristicLow;
u_int8_t wHubCharacteristicHigh;
u_int8_t bPwrOn2PwrGood;
u_int8_t bHubContrCurrent;
u_int8_t deviceRemovable;
u_int8_t PortPwrCtrlMask[8];
} usb_hub_descriptor;
/****************************************/
/*** hardware dependant functions ***/
/****************************************/
static int drv_UH_open(void)
{
struct usb_bus *busses, *bus;
struct usb_device *dev;
hub = NULL;
info("%s: scanning for an USB HUB (0x%04x:0x%04x)...", Name, hubVendor, hubProduct);
usb_init();
usb_find_busses();
usb_find_devices();
busses = usb_get_busses();
for (bus = busses; bus; bus = bus->next) {
for (dev = bus->devices; dev; dev = dev->next) {
if ((dev->descriptor.idVendor == hubVendor) && (dev->descriptor.idProduct == hubProduct)) {
unsigned int v = dev->descriptor.bcdDevice;
info("%s: found USBHUB V%1d%1d.%1d%1d on bus %s device %s", Name,
(v & 0xF000) >> 12, (v & 0xF00) >> 8, (v & 0xF0) >> 4, (v & 0xF), bus->dirname, dev->filename);
if (dev->descriptor.bDeviceClass != USB_CLASS_HUB) {
error("%s: the specified device claims to be no HUB", Name);
return -1;
}
hub = usb_open(dev);
if (!hub) {
error("%s: usb_open() failed!", Name);
return -1;
}
return 0;
}
}
}
error("%s: could not find a USB HUB", Name);
return -1;
}
static int drv_UH_close(void)
{
debug("closing USB handle");
usb_close(hub);
return 0;
}
/*
* Set the Indicator status on port "num+1" to val.
* according to the USB Specification, the following values would be allowed:
*
* 0 : Automatic color (display link state etc)
* 1 : Amber
* 2 : Green
* 3 : Off
* 4..255: Reserved
*
*/
static int drv_UH_set(const int num, const int val)
{
int ret;
if (!hub)
return -1;
if (val < 0 || val > 3) {
info("%s: value %d out of range (0..3)", Name, val);
return -1;
}
if ((ret = usb_control_msg(hub,
HUB_CONTROL_PORT,
HUB_SET_FEATURE, HUB_SET_INDICATOR, (val << 8) | (num + 1), NULL, 0, 1000)) != 0) {
info("%s: usb_control_msg failed with %d", Name, ret);
return -1;
}
return 0;
}
static int drv_UH_start(const char *section, const __attribute__ ((unused))
int quiet)
{
char *buf;
usb_hub_descriptor hub_desc;
int ret;
buf = cfg_get(section, "Vendor", NULL);
if (buf) {
if (!*buf) {
error("%s: Strange Vendor Specification", Name);
return -1;
}
if (sscanf(buf, "0x%x", &hubVendor) != 1) {
error("%s: Strange Vendor Specification: [%s]", Name, buf);
return -1;
}
}
buf = cfg_get(section, "Product", NULL);
if (buf) {
if (!*buf) {
error("%s: Strange Product Specification", Name);
return -1;
}
if (sscanf(buf, "0x%x", &hubProduct) != 1) {
error("%s: Strange Product Specification: [%s]", Name, buf);
return -1;
}
}
if (drv_UH_open() < 0) {
return -1;
}
if ((ret = usb_control_msg(hub,
USB_ENDPOINT_IN | USB_TYPE_CLASS | USB_RECIP_DEVICE,
USB_REQ_GET_DESCRIPTOR, USB_DT_HUB << 8, 0, (char *) &hub_desc, sizeof(hub_desc),
1000)) <= 8) {
error("%s: hub_get_descriptor failed with %d", Name, ret);
drv_UH_close();
return -1;
}
GPOS = hub_desc.nNbrPorts;
debug("%s: HUB claims to have %d ports. Configuring them as GPOs", Name, GPOS);
if (!(hub_desc.wHubCharacteristicLow & 0x80)) {
error("%s: HUB claims to have no Indicator LEDs (Characteristics 0x%04x). Bailing out.", Name,
(hub_desc.wHubCharacteristicHigh << 8) | hub_desc.wHubCharacteristicLow);
/* The HUB Tells us that there are no LEDs to control. Breaking? Maybe don't trust it and continue anyways? */
drv_UH_close();
return -1;
}
return 0;
}
/****************************************/
/*** plugins ***/
/****************************************/
/* none at the moment... */
/****************************************/
/*** widget callbacks ***/
/****************************************/
/* using drv_generic_text_draw(W) */
/* using drv_generic_text_icon_draw(W) */
/* using drv_generic_text_bar_draw(W) */
/****************************************/
/*** exported functions ***/
/****************************************/
/* list models */
int drv_UH_list(void)
{
printf("USBHUB");
return 0;
}
/* initialize driver & display */
int drv_UH_init(const char *section, const int quiet)
{
int ret;
int i;
info("%s: %s", Name, "$Rev$");
/* start display */
if ((ret = drv_UH_start(section, quiet)) != 0)
return ret;
/* real worker functions */
drv_generic_gpio_real_set = drv_UH_set;
/* initialize generic GPIO driver */
if ((ret = drv_generic_gpio_init(section, Name)) != 0)
return ret;
/* register gpio widget, done already by generic_gpio */
/* register plugins */
/* none at the moment... */
/* greeting */
if (!quiet) {
/* Light all LEDS green for a greeting */
for (i = 0; i < GPOS; ++i) {
drv_UH_set(i, 2);
}
sleep(1);
for (i = 0; i < GPOS; ++i) {
drv_UH_set(i, 3); /* OFF */
}
}
return 0;
}
/* close driver & display */
int drv_UH_quit(const int quiet)
{
int i;
debug("%s: shutting down.", Name);
/* say goodbye... */
if (!quiet) {
/* Light all LEDS amber for a goodbye */
for (i = 0; i < GPOS; ++i) {
drv_UH_set(i, 1);
}
sleep(1);
}
drv_generic_gpio_quit();
drv_UH_close();
info("%s: shutdown complete.", Name);
return 0;
}
DRIVER drv_USBHUB = {
.name = Name,
.list = drv_UH_list,
.init = drv_UH_init,
.quit = drv_UH_quit,
};