From 6929dc6b30dc3a6c9c411f677a11b866e8dd28aa Mon Sep 17 00:00:00 2001 From: Jean-Francois Moine Date: Tue, 21 Apr 2009 13:45:56 -0300 Subject: [PATCH] V4L/DVB (11710): gspca - main: Webcams cannot do both isoc and bulk image transfers. Let the subdrivers to set the 'image transfer by bulk' flag. Signed-off-by: Jean-Francois Moine Signed-off-by: Mauro Carvalho Chehab --- drivers/media/video/gspca/finepix.c | 1 + drivers/media/video/gspca/gspca.c | 31 ++++++++++------------------- drivers/media/video/gspca/gspca.h | 2 +- drivers/media/video/gspca/ov534.c | 7 +++++-- drivers/media/video/gspca/sq905.c | 1 + drivers/media/video/gspca/sq905c.c | 1 + 6 files changed, 20 insertions(+), 23 deletions(-) diff --git a/drivers/media/video/gspca/finepix.c b/drivers/media/video/gspca/finepix.c index 00e6863ed666..480ec5c87d0e 100644 --- a/drivers/media/video/gspca/finepix.c +++ b/drivers/media/video/gspca/finepix.c @@ -168,6 +168,7 @@ static int sd_config(struct gspca_dev *gspca_dev, cam->cam_mode = fpix_mode; cam->nmodes = 1; + cam->bulk = 1; cam->bulk_size = FPIX_MAX_TRANSFER; INIT_WORK(&dev->work_struct, dostream); diff --git a/drivers/media/video/gspca/gspca.c b/drivers/media/video/gspca/gspca.c index e3f573041ef6..873e95580407 100644 --- a/drivers/media/video/gspca/gspca.c +++ b/drivers/media/video/gspca/gspca.c @@ -441,7 +441,7 @@ static void destroy_urbs(struct gspca_dev *gspca_dev) * look for an input transfer endpoint in an alternate setting */ static struct usb_host_endpoint *alt_xfer(struct usb_host_interface *alt, - __u8 xfer) + int xfer) { struct usb_host_endpoint *ep; int i, attr; @@ -467,37 +467,28 @@ static struct usb_host_endpoint *get_ep(struct gspca_dev *gspca_dev) { struct usb_interface *intf; struct usb_host_endpoint *ep; - int i, ret; + int xfer, i, ret; intf = usb_ifnum_to_if(gspca_dev->dev, gspca_dev->iface); ep = NULL; + xfer = gspca_dev->cam.bulk ? USB_ENDPOINT_XFER_BULK + : USB_ENDPOINT_XFER_ISOC; i = gspca_dev->alt; /* previous alt setting */ - - /* try isoc */ while (--i >= 0) { - ep = alt_xfer(&intf->altsetting[i], - USB_ENDPOINT_XFER_ISOC); + ep = alt_xfer(&intf->altsetting[i], xfer); if (ep) break; } - - /* if no isoc, try bulk (alt 0 only) */ if (ep == NULL) { - ep = alt_xfer(&intf->altsetting[0], - USB_ENDPOINT_XFER_BULK); - if (ep == NULL) { - err("no transfer endpoint found"); - return NULL; - } - i = 0; - gspca_dev->bulk = 1; + err("no transfer endpoint found"); + return NULL; } PDEBUG(D_STREAM, "use alt %d ep 0x%02x", i, ep->desc.bEndpointAddress); if (i > 0) { ret = usb_set_interface(gspca_dev->dev, gspca_dev->iface, i); if (ret < 0) { - err("set interface err %d", ret); + err("set alt %d err %d", i, ret); return NULL; } } @@ -517,7 +508,7 @@ static int create_urbs(struct gspca_dev *gspca_dev, /* calculate the packet size and the number of packets */ psize = le16_to_cpu(ep->desc.wMaxPacketSize); - if (!gspca_dev->bulk) { /* isoc */ + if (!gspca_dev->cam.bulk) { /* isoc */ /* See paragraph 5.9 / table 5-11 of the usb 2.0 spec. */ psize = (psize & 0x07ff) * (1 + ((psize >> 11) & 3)); @@ -617,7 +608,7 @@ static int gspca_init_transfer(struct gspca_dev *gspca_dev) goto out; /* clear the bulk endpoint */ - if (gspca_dev->bulk) + if (gspca_dev->cam.bulk) usb_clear_halt(gspca_dev->dev, gspca_dev->urb[0]->pipe); @@ -630,7 +621,7 @@ static int gspca_init_transfer(struct gspca_dev *gspca_dev) gspca_dev->streaming = 1; /* some bulk transfers are started by the subdriver */ - if (gspca_dev->bulk && gspca_dev->cam.bulk_nurbs == 0) + if (gspca_dev->cam.bulk && gspca_dev->cam.bulk_nurbs == 0) break; /* submit the URBs */ diff --git a/drivers/media/video/gspca/gspca.h b/drivers/media/video/gspca/gspca.h index 58e8ff02136a..85bb0feddd10 100644 --- a/drivers/media/video/gspca/gspca.h +++ b/drivers/media/video/gspca/gspca.h @@ -56,6 +56,7 @@ struct cam { * - cannot be > MAX_NURBS * - when 0 and bulk_size != 0 means * 1 URB and submit done by subdriver */ + u8 bulk; /* image transfer by 0:isoc / 1:bulk */ u32 input_flags; /* value for ENUM_INPUT status flags */ }; @@ -168,7 +169,6 @@ struct gspca_dev { __u8 iface; /* USB interface number */ __u8 alt; /* USB alternate setting */ __u8 nbalt; /* number of USB alternate settings */ - u8 bulk; /* image transfer by 0:isoc / 1:bulk */ }; int gspca_dev_probe(struct usb_interface *intf, diff --git a/drivers/media/video/gspca/ov534.c b/drivers/media/video/gspca/ov534.c index 19e0bc60de14..92ab92e4c79f 100644 --- a/drivers/media/video/gspca/ov534.c +++ b/drivers/media/video/gspca/ov534.c @@ -708,8 +708,11 @@ static int sd_config(struct gspca_dev *gspca_dev, cam->cam_mode = vga_mode; cam->nmodes = ARRAY_SIZE(vga_mode); - cam->bulk_size = 16384; - cam->bulk_nurbs = 2; + if (sd->sensor == SENSOR_OV772X) { + cam->bulk = 1; + cam->bulk_size = 16384; + cam->bulk_nurbs = 2; + } return 0; } diff --git a/drivers/media/video/gspca/sq905.c b/drivers/media/video/gspca/sq905.c index 2e1cdf068fda..715a68f0156e 100644 --- a/drivers/media/video/gspca/sq905.c +++ b/drivers/media/video/gspca/sq905.c @@ -309,6 +309,7 @@ static int sd_config(struct gspca_dev *gspca_dev, struct sd *dev = (struct sd *) gspca_dev; /* We don't use the buffer gspca allocates so make it small. */ + cam->bulk = 1; cam->bulk_size = 64; INIT_WORK(&dev->work_struct, sq905_dostream); diff --git a/drivers/media/video/gspca/sq905c.c b/drivers/media/video/gspca/sq905c.c index 0bcb74a1b143..916892505432 100644 --- a/drivers/media/video/gspca/sq905c.c +++ b/drivers/media/video/gspca/sq905c.c @@ -206,6 +206,7 @@ static int sd_config(struct gspca_dev *gspca_dev, cam->nmodes = 1; /* We don't use the buffer gspca allocates so make it small. */ cam->bulk_size = 32; + cam->bulk = 1; INIT_WORK(&dev->work_struct, sq905c_dostream); return 0; } -- 2.39.5