Merge branch 'v4l_for_linus' of git://git.kernel.org/pub/scm/linux/kernel/git/mchehab/linux-media

* 'v4l_for_linus' of git://git.kernel.org/pub/scm/linux/kernel/git/mchehab/linux-media: (655 commits)
  [media] revert patch: HDIC HD29L2 DMB-TH USB2.0 reference design driver
  mb86a20s: Add a few more register settings at the init seq
  mb86a20s: Group registers into the same line
  [media] [PATCH] don't reset the delivery system on DTV_CLEAR
  [media] [BUG] it913x-fe fix typo error making SNR levels unstable
  [media] cx23885: Query the CX25840 during enum_input for status
  [media] cx25840: Add support for g_input_status
  [media] rc-videomate-m1f.c Rename to match remote controler name
  [media] drivers: media: au0828: Fix dependency for VIDEO_AU0828
  [media] convert drivers/media/* to use module_platform_driver()
  [media] drivers: video: cx231xx: Fix dependency for VIDEO_CX231XX_DVB
  [media] Exynos4 JPEG codec v4l2 driver
  [media] doc: v4l: selection: choose pixels as units for selection rectangles
  [media] v4l: s5p-tv: mixer: fix setup of VP scaling
  [media] v4l: s5p-tv: mixer: add support for selection API
  [media] v4l: emulate old crop API using extended crop/compose API
  [media] doc: v4l: add documentation for selection API
  [media] doc: v4l: add binary images for selection API
  [media] v4l: add support for selection api
  [media] hd29l2: fix review findings
  ...

1 files changed, 38 insertions, 0 deletions

diff --git a/drivers/media/video/gspca/sn9c20x.c b/drivers/media/video/gspca/sn9c20x.c
index 33cabc342dcf..9e198b45c3c8 100644
--- a/drivers/media/video/gspca/sn9c20x.c
+++ b/drivers/media/video/gspca/sn9c20x.c
@@ -2048,6 +2048,7 @@ static int sd_config(struct gspca_dev *gspca_dev,
 	struct cam *cam;
 
 	cam = &gspca_dev->cam;
+	cam->needs_full_bandwidth = 1;
 
 	sd->sensor = (id->driver_info >> 8) & 0xff;
 	sd->i2c_addr = id->driver_info & 0xff;
@@ -2233,6 +2234,42 @@ static void configure_sensor_output(struct gspca_dev *gspca_dev, int mode)
 	}
 }
 
+static int sd_isoc_init(struct gspca_dev *gspca_dev)
+{
+	struct usb_interface *intf;
+	u32 flags = gspca_dev->cam.cam_mode[(int)gspca_dev->curr_mode].priv;
+
+	/*
+	 * When using the SN9C20X_I420 fmt the sn9c20x needs more bandwidth
+	 * than our regular bandwidth calculations reserve, so we force the
+	 * use of a specific altsetting when using the SN9C20X_I420 fmt.
+	 */
+	if (!(flags & (MODE_RAW | MODE_JPEG))) {
+		intf = usb_ifnum_to_if(gspca_dev->dev, gspca_dev->iface);
+
+		if (intf->num_altsetting != 9) {
+			pr_warn("sn9c20x camera with unknown number of alt "
+			        "settings (%d), please report!\n",
+			        intf->num_altsetting);
+			gspca_dev->alt = intf->num_altsetting;
+			return 0;
+		}
+
+		switch (gspca_dev->width) {
+		case 160: /* 160x120 */
+			gspca_dev->alt = 2;
+			break;
+		case 320: /* 320x240 */
+			gspca_dev->alt = 6;
+			break;
+		default:  /* >= 640x480 */
+			gspca_dev->alt = 9;
+		}
+	}
+
+	return 0;
+}
+
 #define HW_WIN(mode, hstart, vstart) \
 ((const u8 []){hstart, 0, vstart, 0, \
 (mode & MODE_SXGA ? 1280 >> 4 : 640 >> 4), \
@@ -2473,6 +2510,7 @@ static const struct sd_desc sd_desc = {
 	.nctrls = ARRAY_SIZE(sd_ctrls),
 	.config = sd_config,
 	.init = sd_init,
+	.isoc_init = sd_isoc_init,
 	.start = sd_start,
 	.stopN = sd_stopN,
 	.pkt_scan = sd_pkt_scan,