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V4L/DVB (5206): Usbvision: set alternate interface modification

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- usb alternate selection modified to get the biggest endpoint packet size.
- fix sysfs get values for brightness/contrast/hue/saturation

Signed-off-by: Thierry MERLE <thierry.merle@free.fr>
Signed-off-by: Mauro Carvalho Chehab <mchehab@infradead.org>
This commit is contained in:
Thierry MERLE 2007-02-07 10:14:38 -03:00 committed by Mauro Carvalho Chehab
parent 6f78e186fe
commit 2a9f8b5d25
4 changed files with 81 additions and 16 deletions
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2
drivers/media/video/usbvision/Kconfig
View File

@ -1,6 +1,6 @@
config VIDEO_USBVISION
tristate "USB video devices based on Nogatech NT1003/1004/1005"
depends on I2C && VIDEO_V4L2
depends on I2C && VIDEO_V4L2 && USB
select VIDEO_TUNER
select VIDEO_SAA711X if VIDEO_HELPER_CHIPS_AUTO
---help---

33
drivers/media/video/usbvision/usbvision-core.c
View File

@ -2361,6 +2361,32 @@ int usbvision_setup(struct usb_usbvision *usbvision,int format)
return USBVISION_IS_OPERATIONAL(usbvision);
}
int usbvision_set_alternate(struct usb_usbvision *dev)
{
int errCode, prev_alt = dev->ifaceAlt;
int i;
dev->ifaceAlt=0;
for(i=0;i< dev->num_alt; i++)
if(dev->alt_max_pkt_size[i]>dev->alt_max_pkt_size[dev->ifaceAlt])
dev->ifaceAlt=i;
if (dev->ifaceAlt != prev_alt) {
dev->isocPacketSize = dev->alt_max_pkt_size[dev->ifaceAlt];
PDEBUG(DBG_FUNC,"setting alternate %d with wMaxPacketSize=%u", dev->ifaceAlt,dev->isocPacketSize);
errCode = usb_set_interface(dev->dev, dev->iface, dev->ifaceAlt);
if (errCode < 0) {
err ("cannot change alternate number to %d (error=%i)",
dev->ifaceAlt, errCode);
return errCode;
}
}
PDEBUG(DBG_ISOC, "ISO Packet Length:%d", dev->isocPacketSize);
return 0;
}
/*
* usbvision_init_isoc()
*
@ -2378,15 +2404,13 @@ int usbvision_init_isoc(struct usb_usbvision *usbvision)
scratch_reset(usbvision);
/* Alternate interface 1 is is the biggest frame size */
errCode = usb_set_interface(dev, usbvision->iface, usbvision->ifaceAltActive);
errCode = usbvision_set_alternate(usbvision);
if (errCode < 0) {
usbvision->last_error = errCode;
return -EBUSY;
}
regValue = (16 - usbvision_read_reg(usbvision, USBVISION_ALTER_REG)) & 0x0F;
usbvision->isocPacketSize = (regValue == 0) ? 0 : (regValue * 64) - 1;
PDEBUG(DBG_ISOC, "ISO Packet Length:%d", usbvision->isocPacketSize);
usbvision->usb_bandwidth = regValue >> 1;
PDEBUG(DBG_ISOC, "USB Bandwidth Usage: %dMbit/Sec", usbvision->usb_bandwidth);
@ -2472,8 +2496,9 @@ void usbvision_stop_isoc(struct usb_usbvision *usbvision)
if (!usbvision->remove_pending) {
/* Set packet size to 0 */
usbvision->ifaceAlt=0;
errCode = usb_set_interface(usbvision->dev, usbvision->iface,
usbvision->ifaceAltInactive);
usbvision->ifaceAlt);
if (errCode < 0) {
err("%s: usb_set_interface() failed: error %d", __FUNCTION__, errCode);
usbvision->last_error = errCode;

55
drivers/media/video/usbvision/usbvision-video.c
View File

@ -230,7 +230,7 @@ static ssize_t show_hue(struct class_device *cd, char *buf)
ctrl.value = 0;
if(usbvision->user)
call_i2c_clients(usbvision, VIDIOC_G_CTRL, &ctrl);
return sprintf(buf, "%d\n", ctrl.value >> 8);
return sprintf(buf, "%d\n", ctrl.value);
}
static CLASS_DEVICE_ATTR(hue, S_IRUGO, show_hue, NULL);
@ -243,7 +243,7 @@ static ssize_t show_contrast(struct class_device *cd, char *buf)
ctrl.value = 0;
if(usbvision->user)
call_i2c_clients(usbvision, VIDIOC_G_CTRL, &ctrl);
return sprintf(buf, "%d\n", ctrl.value >> 8);
return sprintf(buf, "%d\n", ctrl.value);
}
static CLASS_DEVICE_ATTR(contrast, S_IRUGO, show_contrast, NULL);
@ -256,7 +256,7 @@ static ssize_t show_brightness(struct class_device *cd, char *buf)
ctrl.value = 0;
if(usbvision->user)
call_i2c_clients(usbvision, VIDIOC_G_CTRL, &ctrl);
return sprintf(buf, "%d\n", ctrl.value >> 8);
return sprintf(buf, "%d\n", ctrl.value);
}
static CLASS_DEVICE_ATTR(brightness, S_IRUGO, show_brightness, NULL);
@ -269,7 +269,7 @@ static ssize_t show_saturation(struct class_device *cd, char *buf)
ctrl.value = 0;
if(usbvision->user)
call_i2c_clients(usbvision, VIDIOC_G_CTRL, &ctrl);
return sprintf(buf, "%d\n", ctrl.value >> 8);
return sprintf(buf, "%d\n", ctrl.value);
}
static CLASS_DEVICE_ATTR(saturation, S_IRUGO, show_saturation, NULL);
@ -776,8 +776,8 @@ static int usbvision_v4l2_do_ioctl(struct inode *inode, struct file *file,
case VIDIOC_G_CTRL:
{
struct v4l2_control *ctrl = arg;
PDEBUG(DBG_IOCTL,"VIDIOC_G_CTRL id=%x value=%x",ctrl->id,ctrl->value);
call_i2c_clients(usbvision, VIDIOC_G_CTRL, ctrl);
PDEBUG(DBG_IOCTL,"VIDIOC_G_CTRL id=%x value=%x",ctrl->id,ctrl->value);
return 0;
}
case VIDIOC_S_CTRL:
@ -1243,6 +1243,13 @@ static int usbvision_radio_open(struct inode *inode, struct file *file)
}
}
/* Alternate interface 1 is is the biggest frame size */
errCode = usbvision_set_alternate(usbvision);
if (errCode < 0) {
usbvision->last_error = errCode;
return -EBUSY;
}
// If so far no errors then we shall start the radio
usbvision->radio = 1;
call_i2c_clients(usbvision,AUDC_SET_RADIO,&usbvision->tuner_type);
@ -1274,6 +1281,11 @@ static int usbvision_radio_close(struct inode *inode, struct file *file)
down(&usbvision->lock);
/* Set packet size to 0 */
usbvision->ifaceAlt=0;
errCode = usb_set_interface(usbvision->dev, usbvision->iface,
usbvision->ifaceAlt);
usbvision_audio_off(usbvision);
usbvision->radio=0;
usbvision->user--;
@ -1765,15 +1777,17 @@ static void usbvision_configure_video(struct usb_usbvision *usbvision)
*/
static int __devinit usbvision_probe(struct usb_interface *intf, const struct usb_device_id *devid)
{
struct usb_device *dev = interface_to_usbdev(intf);
struct usb_device *dev = usb_get_dev(interface_to_usbdev(intf));
struct usb_interface *uif;
__u8 ifnum = intf->altsetting->desc.bInterfaceNumber;
const struct usb_host_interface *interface;
struct usb_usbvision *usbvision = NULL;
const struct usb_endpoint_descriptor *endpoint;
int model;
int model,i;
PDEBUG(DBG_PROBE, "VID=%#04x, PID=%#04x, ifnum=%u",
dev->descriptor.idVendor, dev->descriptor.idProduct, ifnum);
/* Is it an USBVISION video dev? */
model = 0;
for(model = 0; usbvision_device_data[model].idVendor; model++) {
@ -1800,7 +1814,7 @@ static int __devinit usbvision_probe(struct usb_interface *intf, const struct us
endpoint = &interface->endpoint[1].desc;
if ((endpoint->bmAttributes & USB_ENDPOINT_XFERTYPE_MASK) != USB_ENDPOINT_XFER_ISOC) {
err("%s: interface %d. has non-ISO endpoint!", __FUNCTION__, ifnum);
err("%s: Endpoint attribures %d", __FUNCTION__, endpoint->bmAttributes);
err("%s: Endpoint attributes %d", __FUNCTION__, endpoint->bmAttributes);
return -ENODEV;
}
if ((endpoint->bEndpointAddress & USB_ENDPOINT_DIR_MASK) == USB_DIR_OUT) {
@ -1827,6 +1841,28 @@ static int __devinit usbvision_probe(struct usb_interface *intf, const struct us
down(&usbvision->lock);
/* compute alternate max packet sizes */
uif = dev->actconfig->interface[0];
usbvision->num_alt=uif->num_altsetting;
PDEBUG(DBG_PROBE, "Alternate settings: %i",usbvision->num_alt);
usbvision->alt_max_pkt_size = kmalloc(32*
usbvision->num_alt,GFP_KERNEL);
if (usbvision->alt_max_pkt_size == NULL) {
err("usbvision: out of memory!\n");
return -ENOMEM;
}
for (i = 0; i < usbvision->num_alt ; i++) {
u16 tmp = le16_to_cpu(uif->altsetting[i].endpoint[1].desc.
wMaxPacketSize);
usbvision->alt_max_pkt_size[i] =
(tmp & 0x07ff) * (((tmp & 0x1800) >> 11) + 1);
PDEBUG(DBG_PROBE, "Alternate setting %i, max size= %i",i,
usbvision->alt_max_pkt_size[i]);
}
usbvision->nr = usbvision_nr++;
usbvision->have_tuner = usbvision_device_data[model].Tuner;
@ -1839,8 +1875,7 @@ static int __devinit usbvision_probe(struct usb_interface *intf, const struct us
usbvision->DevModel = model;
usbvision->remove_pending = 0;
usbvision->iface = ifnum;
usbvision->ifaceAltInactive = 0;
usbvision->ifaceAltActive = 1;
usbvision->ifaceAlt = 0;
usbvision->video_endp = endpoint->bEndpointAddress;
usbvision->isocPacketSize = 0;
usbvision->usb_bandwidth = 0;

7
drivers/media/video/usbvision/usbvision.h
View File

@ -33,6 +33,7 @@
#include <linux/list.h>
#include <linux/usb.h>
#include <linux/i2c.h>
#include <media/v4l2-common.h>
#include <media/tuner.h>
#include <linux/videodev2.h>
@ -396,8 +397,11 @@ struct usb_usbvision {
/* Device structure */
struct usb_device *dev;
/* usb transfer */
int num_alt; /* Number of alternative settings */
unsigned int *alt_max_pkt_size; /* array of wMaxPacketSize */
unsigned char iface; /* Video interface number */
unsigned char ifaceAltActive, ifaceAltInactive; /* Alt settings */
unsigned char ifaceAlt; /* Alt settings */
unsigned char Vin_Reg2_Preset;
struct semaphore lock;
struct timer_list powerOffTimer;
@ -502,6 +506,7 @@ int usbvision_setup(struct usb_usbvision *usbvision,int format);
int usbvision_init_isoc(struct usb_usbvision *usbvision);
int usbvision_restart_isoc(struct usb_usbvision *usbvision);
void usbvision_stop_isoc(struct usb_usbvision *usbvision);
int usbvision_set_alternate(struct usb_usbvision *dev);
int usbvision_set_audio(struct usb_usbvision *usbvision, int AudioChannel);
int usbvision_audio_off(struct usb_usbvision *usbvision);