V4L/DVB (6536): Add a hint for boards without unique USB ID

This patch adds a function to allow trying to detect boards that shares
the generic IDs.

The current detection method is based at eeprom checksum.

Signed-off-by: Mauro Carvalho Chehab <mchehab@infradead.org>
This commit is contained in:
Mauro Carvalho Chehab 2007-11-03 21:20:59 -03:00
parent 3dbd85ba36
commit 03910cc390
4 changed files with 233 additions and 169 deletions

View File

@ -37,6 +37,16 @@
#include "em28xx.h"
#include "tuner-xc2028.h"
static int tuner = -1;
module_param(tuner, int, 0444);
MODULE_PARM_DESC(tuner, "tuner type");
struct em28xx_hash_table {
unsigned long hash;
unsigned int model;
unsigned int tuner;
};
struct em28xx_board em28xx_boards[] = {
[EM2800_BOARD_UNKNOWN] = {
.name = "Unknown EM2800 video grabber",
@ -342,70 +352,178 @@ struct usb_device_id em28xx_id_table [] = {
{ USB_DEVICE(0x0ccd, 0x0047), .driver_info = EM2880_BOARD_TERRATEC_PRODIGY_XS },
{ },
};
MODULE_DEVICE_TABLE (usb, em28xx_id_table);
static struct em28xx_hash_table em28xx_hash [] = {
{ 0, 0, 0 },
};
/* Since em28xx_pre_card_setup() requires a proper dev->model,
* this won't work for boards with generic PCI IDs
*/
void em28xx_pre_card_setup(struct em28xx *dev)
{
/* request some modules */
switch(dev->model){
case EM2880_BOARD_TERRATEC_PRODIGY_XS:
case EM2880_BOARD_HAUPPAUGE_WINTV_HVR_900:
case EM2880_BOARD_TERRATEC_HYBRID_XS:
{
em28xx_write_regs_req(dev, 0x00, 0x08, "\x7d", 1); // reset through GPIO?
break;
}
case EM2880_BOARD_TERRATEC_PRODIGY_XS:
case EM2880_BOARD_HAUPPAUGE_WINTV_HVR_900:
case EM2880_BOARD_TERRATEC_HYBRID_XS:
/* reset through GPIO? */
em28xx_write_regs_req(dev, 0x00, 0x08, "\x7d", 1);
break;
}
}
static int em28xx_tuner_callback(void *ptr, int command, int arg)
{
int rc = 0;
struct em28xx *dev = ptr;
if (dev->tuner_type != TUNER_XC2028)
return 0;
switch (command) {
case XC2028_TUNER_RESET:
/* FIXME: This is device-dependent */
dev->em28xx_write_regs_req(dev, 0x00, 0x48, "\x00", 1);
dev->em28xx_write_regs_req(dev, 0x00, 0x12, "\x67", 1);
msleep(140);
break;
}
return rc;
}
static void em28xx_config_tuner (struct em28xx *dev)
{
struct v4l2_priv_tun_config xc2028_cfg;
struct xc2028_ctrl ctl;
struct tuner_setup tun_setup;
struct v4l2_frequency f;
memset (&ctl,0,sizeof(ctl));
if (!dev->has_tuner)
return;
ctl.fname = XC2028_DEFAULT_FIRMWARE;
ctl.max_len = 64;
tun_setup.mode_mask = T_ANALOG_TV | T_RADIO;
tun_setup.type = dev->tuner_type;
tun_setup.addr = dev->tuner_addr;
tun_setup.tuner_callback = em28xx_tuner_callback;
xc2028_cfg.tuner = TUNER_XC2028;
xc2028_cfg.priv = &ctl;
em28xx_i2c_call_clients(dev, TUNER_SET_TYPE_ADDR, &tun_setup);
em28xx_i2c_call_clients(dev, TUNER_SET_CONFIG, &xc2028_cfg);
if (dev->tuner_type == TUNER_XC2028) {
memset (&ctl, 0, sizeof(ctl));
ctl.fname = XC2028_DEFAULT_FIRMWARE;
ctl.max_len = 64;
xc2028_cfg.tuner = TUNER_XC2028;
xc2028_cfg.priv = &ctl;
em28xx_i2c_call_clients(dev, TUNER_SET_CONFIG, &xc2028_cfg);
}
/* configure tuner */
f.tuner = 0;
f.type = V4L2_TUNER_ANALOG_TV;
f.frequency = 9076; /* just a magic number */
dev->ctl_freq = f.frequency;
em28xx_i2c_call_clients(dev, VIDIOC_S_FREQUENCY, &f);
}
static int em28xx_hint_board(struct em28xx *dev)
{
int i;
for (i = 0; i < ARRAY_SIZE(em28xx_hash); i++) {
if (dev->hash == em28xx_hash[i].hash) {
dev->model = em28xx_hash[i].model;
dev->tuner_type = em28xx_hash[i].tuner;
em28xx_errdev("Your board has no unique USB ID.\n");
em28xx_errdev("A hint were successfully done, "
"based on eeprom hash.\n");
em28xx_errdev("This method is not 100%% failproof.\n");
em28xx_errdev("If the board were missdetected, "
"please email this log to:\n");
em28xx_errdev("\tV4L Mailing List "
" <video4linux-list@redhat.com>\n");
em28xx_errdev("Board detected as %s\n",
em28xx_boards[dev->model].name);
return 0;
}
}
em28xx_errdev("Your board has no unique USB ID and thus need a "
"hint to be detected.\n");
em28xx_errdev("You may try to use card=<n> insmod option to "
"workaround that.\n");
em28xx_errdev("Please send an email with this log to:\n");
em28xx_errdev("\tV4L Mailing List <video4linux-list@redhat.com>\n");
em28xx_errdev("Board eeprom hash is 0x%08lx\n", dev->hash);
em28xx_errdev("Here is a list of valid choices for the card=<n>"
" insmod option:\n");
for (i = 0; i < em28xx_bcount; i++) {
em28xx_errdev(" card=%d -> %s\n",
i, em28xx_boards[i].name);
}
return -1;
}
void em28xx_card_setup(struct em28xx *dev)
{
/* request some modules */
switch(dev->model){
case EM2820_BOARD_HAUPPAUGE_WINTV_USB_2:
{
struct tveeprom tv;
switch (dev->model) {
case EM2820_BOARD_HAUPPAUGE_WINTV_USB_2:
{
struct tveeprom tv;
#ifdef CONFIG_MODULES
request_module("tveeprom");
request_module("ir-kbd-i2c");
request_module("msp3400");
request_module("tveeprom");
request_module("ir-kbd-i2c");
#endif
/* Call first TVeeprom */
/* Call first TVeeprom */
dev->i2c_client.addr = 0xa0 >> 1;
tveeprom_hauppauge_analog(&dev->i2c_client, &tv, dev->eedata);
dev->tuner_type= tv.tuner_type;
if (tv.audio_processor == AUDIO_CHIP_MSP34XX) {
dev->i2s_speed=2048000;
dev->has_msp34xx=1;
} else
dev->has_msp34xx=0;
break;
}
case EM2820_BOARD_KWORLD_PVRTV2800RF:
{
em28xx_write_regs_req(dev,0x00,0x08, "\xf9", 1); // GPIO enables sound on KWORLD PVR TV 2800RF
break;
}
dev->i2c_client.addr = 0xa0 >> 1;
tveeprom_hauppauge_analog(&dev->i2c_client, &tv, dev->eedata);
dev->tuner_type = tv.tuner_type;
if (tv.audio_processor == AUDIO_CHIP_MSP34XX) {
dev->i2s_speed = 2048000;
dev->has_msp34xx = 1;
}
break;
}
case EM2820_BOARD_KWORLD_PVRTV2800RF:
/* GPIO enables sound on KWORLD PVR TV 2800RF */
em28xx_write_regs_req(dev, 0x00, 0x08, "\xf9", 1);
break;
case EM2820_BOARD_UNKNOWN:
case EM2800_BOARD_UNKNOWN:
em28xx_hint_board(dev);
}
dev->is_em2800 = em28xx_boards[dev->model].is_em2800;
dev->has_tuner = em28xx_boards[dev->model].has_tuner;
dev->has_msp34xx = em28xx_boards[dev->model].has_msp34xx;
dev->tda9887_conf = em28xx_boards[dev->model].tda9887_conf;
dev->decoder = em28xx_boards[dev->model].decoder;
dev->video_inputs = em28xx_boards[dev->model].vchannels;
if (tuner >= 0)
dev->tuner_type = tuner;
#ifdef CONFIG_MODULES
/* request some modules */
if (dev->has_msp34xx)
request_module("msp3400");
if (dev->decoder == EM28XX_SAA7113 || dev->decoder == EM28XX_SAA7114)
request_module("saa7115");
if (dev->decoder == EM28XX_TVP5150)
request_module("tvp5150");
if (dev->has_tuner)
request_module("tuner");
#endif
em28xx_config_tuner (dev);
}
MODULE_DEVICE_TABLE (usb, em28xx_id_table);

View File

@ -292,6 +292,31 @@ static int em28xx_i2c_xfer(struct i2c_adapter *i2c_adap,
return rc;
}
/* based on linux/sunrpc/svcauth.h and linux/hash.h
* The original hash function returns a different value, if arch is x86_64
* or i386.
*/
static inline unsigned long em28xx_hash_mem(char *buf, int length, int bits)
{
unsigned long hash = 0;
unsigned long l = 0;
int len = 0;
unsigned char c;
do {
if (len == length) {
c = (char)len;
len = -1;
} else
c = *buf++;
l = (l << 8) | c;
len++;
if ((len & (32 / 8 - 1)) == 0)
hash = ((hash^l) * 0x9e370001UL);
} while (len);
return (hash >> (32 - bits)) & 0xffffffffUL;
}
static int em28xx_i2c_eeprom(struct em28xx *dev, unsigned char *eedata, int len)
{
unsigned char buf, *p = eedata;
@ -335,7 +360,11 @@ static int em28xx_i2c_eeprom(struct em28xx *dev, unsigned char *eedata, int len)
printk("\n");
}
printk(KERN_INFO "EEPROM ID= 0x%08x\n", em_eeprom->id);
if (em_eeprom->id == 0x9567eb1a)
dev->hash = em28xx_hash_mem(eedata, len, 32);
printk(KERN_INFO "EEPROM ID= 0x%08x, hash = 0x%08lx\n",
em_eeprom->id, dev->hash);
printk(KERN_INFO "Vendor/Product ID= %04x:%04x\n", em_eeprom->vendor_ID,
em_eeprom->product_ID);
@ -392,43 +421,6 @@ static u32 functionality(struct i2c_adapter *adap)
}
static int em28xx_tuner_callback(void *ptr, int command, int arg)
{
int rc = 0;
struct em28xx *dev = ptr;
if (dev->tuner_type != TUNER_XC2028)
return 0;
switch (command) {
case XC2028_TUNER_RESET:
/* FIXME: This is device-dependent */
dev->em28xx_write_regs_req(dev, 0x00, 0x48, "\x00", 1);
dev->em28xx_write_regs_req(dev, 0x00, 0x12, "\x67", 1);
msleep(140);
break;
}
return rc;
}
static int em28xx_set_tuner(int check_eeprom, struct i2c_client *client)
{
struct em28xx *dev = client->adapter->algo_data;
struct tuner_setup tun_setup;
if (dev->has_tuner) {
tun_setup.mode_mask = T_ANALOG_TV | T_RADIO;
tun_setup.type = dev->tuner_type;
tun_setup.addr = dev->tuner_addr;
tun_setup.tuner_callback = em28xx_tuner_callback;
em28xx_i2c_call_clients(dev, TUNER_SET_TYPE_ADDR, &tun_setup);
}
return (0);
}
/*
* attach_inform()
* gets called when a device attaches to the i2c bus
@ -487,9 +479,11 @@ static int attach_inform(struct i2c_client *client)
break;
default:
if (!dev->tuner_addr)
dev->tuner_addr = client->addr;
dprintk1(1,"attach inform: detected I2C address %x\n", client->addr << 1);
dev->tuner_addr = client->addr;
em28xx_set_tuner(-1, client);
}
return 0;

View File

@ -37,7 +37,6 @@
#include <linux/mutex.h>
#include "em28xx.h"
#include <media/tuner.h>
#include <media/v4l2-common.h>
#include <media/msp3400.h>
@ -71,10 +70,6 @@ MODULE_PARM_DESC(card,"card type");
MODULE_PARM_DESC(video_nr,"video device numbers");
MODULE_PARM_DESC(vbi_nr,"vbi device numbers");
static int tuner = -1;
module_param(tuner, int, 0444);
MODULE_PARM_DESC(tuner, "tuner type");
static unsigned int video_debug = 0;
module_param(video_debug,int,0644);
MODULE_PARM_DESC(video_debug,"enable debug messages [video]");
@ -171,7 +166,6 @@ static int em28xx_config(struct em28xx *dev)
*/
static void em28xx_config_i2c(struct em28xx *dev)
{
struct v4l2_frequency f;
struct v4l2_routing route;
route.input = INPUT(dev->ctl_input)->vmux;
@ -179,13 +173,6 @@ static void em28xx_config_i2c(struct em28xx *dev)
em28xx_i2c_call_clients(dev, VIDIOC_INT_RESET, NULL);
em28xx_i2c_call_clients(dev, VIDIOC_INT_S_VIDEO_ROUTING, &route);
em28xx_i2c_call_clients(dev, VIDIOC_STREAMON, NULL);
/* configure tuner */
f.tuner = 0;
f.type = V4L2_TUNER_ANALOG_TV;
f.frequency = 9076; /* FIXME:remove magic number */
dev->ctl_freq = f.frequency;
em28xx_i2c_call_clients(dev, VIDIOC_S_FREQUENCY, &f);
}
/*
@ -1495,7 +1482,7 @@ static const struct file_operations em28xx_v4l_fops = {
* allocates and inits the device structs, registers i2c bus and v4l device
*/
static int em28xx_init_dev(struct em28xx **devhandle, struct usb_device *udev,
int minor, int model)
int minor)
{
struct em28xx *dev = *devhandle;
int retval = -ENOMEM;
@ -1503,7 +1490,6 @@ static int em28xx_init_dev(struct em28xx **devhandle, struct usb_device *udev,
unsigned int maxh, maxw;
dev->udev = udev;
dev->model = model;
mutex_init(&dev->lock);
init_waitqueue_head(&dev->open);
@ -1512,26 +1498,47 @@ static int em28xx_init_dev(struct em28xx **devhandle, struct usb_device *udev,
dev->em28xx_read_reg_req_len = em28xx_read_reg_req_len;
dev->em28xx_write_regs_req = em28xx_write_regs_req;
dev->em28xx_read_reg_req = em28xx_read_reg_req;
dev->is_em2800 = em28xx_boards[model].is_em2800;
dev->has_tuner = em28xx_boards[model].has_tuner;
dev->has_msp34xx = em28xx_boards[model].has_msp34xx;
dev->tda9887_conf = em28xx_boards[model].tda9887_conf;
dev->decoder = em28xx_boards[model].decoder;
if (tuner >= 0)
dev->tuner_type = tuner;
else
dev->tuner_type = em28xx_boards[model].tuner_type;
/* setup video picture settings for saa7113h */
memset(&dev->vpic, 0, sizeof(dev->vpic));
dev->vpic.colour = 128 << 8;
dev->vpic.hue = 128 << 8;
dev->vpic.brightness = 128 << 8;
dev->vpic.contrast = 192 << 8;
dev->vpic.whiteness = 128 << 8; /* This one isn't used */
dev->vpic.depth = 16;
dev->vpic.palette = VIDEO_PALETTE_YUV422;
dev->video_inputs = em28xx_boards[model].vchannels;
em28xx_pre_card_setup(dev);
errCode = em28xx_config(dev);
if (errCode) {
em28xx_errdev("error configuring device\n");
em28xx_devused &= ~(1<<dev->devno);
kfree(dev);
return -ENOMEM;
}
mutex_lock(&dev->lock);
/* register i2c bus */
em28xx_i2c_register(dev);
/* Do board specific init and eeprom reading */
em28xx_card_setup(dev);
/* configure the device */
em28xx_config_i2c(dev);
mutex_unlock(&dev->lock);
for (i = 0; i < TVNORMS; i++)
if (em28xx_boards[model].norm == tvnorms[i].mode)
if (em28xx_boards[dev->model].norm == tvnorms[i].mode)
break;
if (i == TVNORMS)
i = 0;
dev->tvnorm = &tvnorms[i]; /* set default norm */
dev->tvnorm = &tvnorms[i]; /* set default norm */
em28xx_videodbg("tvnorm=%s\n", dev->tvnorm->name);
@ -1550,52 +1557,8 @@ static int em28xx_init_dev(struct em28xx **devhandle, struct usb_device *udev,
dev->vscale = 0;
dev->ctl_input = 2;
/* setup video picture settings for saa7113h */
memset(&dev->vpic, 0, sizeof(dev->vpic));
dev->vpic.colour = 128 << 8;
dev->vpic.hue = 128 << 8;
dev->vpic.brightness = 128 << 8;
dev->vpic.contrast = 192 << 8;
dev->vpic.whiteness = 128 << 8; /* This one isn't used */
dev->vpic.depth = 16;
dev->vpic.palette = VIDEO_PALETTE_YUV422;
em28xx_pre_card_setup(dev);
#ifdef CONFIG_MODULES
/* request some modules */
if (dev->decoder == EM28XX_SAA7113 || dev->decoder == EM28XX_SAA7114)
request_module("saa7115");
if (dev->decoder == EM28XX_TVP5150)
request_module("tvp5150");
if (dev->has_tuner)
request_module("tuner");
#endif
errCode = em28xx_config(dev);
if (errCode) {
em28xx_errdev("error configuring device\n");
em28xx_devused&=~(1<<dev->devno);
kfree(dev);
return -ENOMEM;
}
mutex_lock(&dev->lock);
/* register i2c bus */
em28xx_i2c_register(dev);
/* Do board specific init and eeprom reading */
em28xx_card_setup(dev);
/* configure the device */
em28xx_config_i2c(dev);
mutex_unlock(&dev->lock);
errCode = em28xx_config(dev);
#ifdef CONFIG_MODULES
if (dev->has_msp34xx)
request_module("msp3400");
#endif
/* allocate and fill v4l2 device struct */
dev->vdev = video_device_alloc();
if (NULL == dev->vdev) {
@ -1695,7 +1658,7 @@ static int em28xx_usb_probe(struct usb_interface *interface,
struct usb_interface *uif;
struct em28xx *dev = NULL;
int retval = -ENODEV;
int model,i,nr,ifnum;
int i, nr, ifnum;
udev = usb_get_dev(interface_to_usbdev(interface));
ifnum = interface->altsetting[0].desc.bInterfaceNumber;
@ -1735,8 +1698,6 @@ static int em28xx_usb_probe(struct usb_interface *interface,
return -ENODEV;
}
model=id->driver_info;
if (nr >= EM28XX_MAXBOARDS) {
printk (DRIVER_NAME ": Supports only %i em28xx boards.\n",EM28XX_MAXBOARDS);
em28xx_devused&=~(1<<nr);
@ -1752,7 +1713,8 @@ static int em28xx_usb_probe(struct usb_interface *interface,
}
snprintf(dev->name, 29, "em28xx #%d", nr);
dev->devno=nr;
dev->devno = nr;
dev->model = id->driver_info;
/* compute alternate max packet sizes */
uif = udev->actconfig->interface[0];
@ -1779,26 +1741,14 @@ static int em28xx_usb_probe(struct usb_interface *interface,
}
if ((card[nr]>=0)&&(card[nr]<em28xx_bcount))
model=card[nr];
if ((model==EM2800_BOARD_UNKNOWN)||(model==EM2820_BOARD_UNKNOWN)) {
em28xx_errdev("Your board has no unique USB ID and thus can't be autodetected.\n");
em28xx_errdev("Please pass card=<n> insmod option to workaround that.\n");
em28xx_errdev("If there isn't any card number for you, please send an email to:\n");
em28xx_errdev("\tV4L Mailing List <video4linux-list@redhat.com>\n");
em28xx_errdev("Here is a list of valid choices for the card=<n> insmod option:\n");
for (i = 0; i < em28xx_bcount; i++) {
em28xx_errdev(" card=%d -> %s\n", i,
em28xx_boards[i].name);
}
}
dev->model = card[nr];
/* allocate device struct */
retval = em28xx_init_dev(&dev, udev, nr, model);
retval = em28xx_init_dev(&dev, udev, nr);
if (retval)
return retval;
em28xx_info("Found %s\n", em28xx_boards[model].name);
em28xx_info("Found %s\n", em28xx_boards[dev->model].name);
/* save our data pointer in this interface device */
usb_set_intfdata(interface, dev);

View File

@ -257,6 +257,8 @@ struct em28xx {
int interlaced; /* 1=interlace fileds, 0=just top fileds */
int type;
unsigned long hash; /* eeprom hash - for boards with generic ID */
/* states */
enum em28xx_dev_state state;
enum em28xx_stream_state stream;