[PATCH] UBUNTU: SAUCE: [Hardy SRU] LP#310760 Fix the MIC of the Lenovo webcam doesn't work after launching the camera

[AceLan Kao]

OriginalAuthor: AceLan Kao <acelan.kao at canonical.com>, Keng-Yu Lin <keng-yu.lin at canonical.com>
BugLink: https://bugs.launchpad.net/ubuntu/+source/linux/+bug/310760

SRU JUSTIFICATION

IMPACT: The MIC of the Lenovo webcam doesn't work after launching the
camera, because of the i2c command of the turn on/off the LED on the
camera is wrong and will impact the MIC function.

FIX: A simple patch to avoid sending out the LED i2c command if detected
the webcam model is Lenovo. The upstream kernel has problem with this
model of webcam, will try to fix the problem and send the patch to
upstream.

TEST: The test kernl in
http://people.ubuntu.com/~lexical/archive/lp310760/ was tested by the
originator of the bug and reported to work.

git://kernel.ubuntu.com/acelan/ubuntu-hardy-lum.git lp310760

Signed-off-by: AceLan Kao <acelan.kao at canonical.com>
---
 ubuntu/media/gspcav1/Vimicro/vc032x.h |   17 +++++++++++++----
 1 files changed, 13 insertions(+), 4 deletions(-)

diff --git a/ubuntu/media/gspcav1/Vimicro/vc032x.h b/ubuntu/media/gspcav1/Vimicro/vc032x.h
index 2bd1f67..c2e9b20 100644
--- a/ubuntu/media/gspcav1/Vimicro/vc032x.h
+++ b/ubuntu/media/gspcav1/Vimicro/vc032x.h
@@ -543,8 +543,11 @@ static void vc0321_start(struct usb_spca50x *spca50x)
 		 spca5xxRegWrite(spca50x->dev, 0xa0, 0x23, 0xb800, NULL, 0); // ISP CTRL_BAS
 		 */
 	// set the led on 0x0892 0x0896
-        spca5xxRegWrite(spca50x->dev, 0x89, 0xffff, 0xfdff, NULL, 0);
-	msleep(100);
+        if( sd->sensor != SENSOR_MI1310_SOC)
+        {
+            spca5xxRegWrite(spca50x->dev, 0x89, 0xffff, 0xfdff, NULL, 0);
+            msleep(100);
+        }
     	vc0321_setbrightness(spca50x);
     	vc0321_setquality(spca50x);
     	vc0321_setAutobright(spca50x);
@@ -554,7 +557,10 @@ static void vc0321_start(struct usb_spca50x *spca50x)
 static void vc0321_stopN(struct usb_spca50x *spca50x)
 {
     struct usb_device *dev = spca50x->dev;
-    spca5xxRegWrite(dev, 0x89, 0xffff, 0xffff, NULL, 0);
+    struct sd *sd = (struct sd *) gspca_dev;
+
+    if( sd->sensor != SENSOR_MI1310_SOC)
+        spca5xxRegWrite(dev, 0x89, 0xffff, 0xffff, NULL, 0);
     spca5xxRegWrite(dev, 0xa0, 0x01, 0xb301, NULL, 0);
     spca5xxRegWrite(dev, 0xa0, 0x09, 0xb003, NULL, 0);
 }
@@ -562,7 +568,10 @@ static void vc0321_stopN(struct usb_spca50x *spca50x)
 static void vc0321_stop0(struct usb_spca50x *spca50x)
 {
     struct usb_device *dev = spca50x->dev;
-    spca5xxRegWrite(dev, 0x89, 0xffff, 0xffff, NULL, 0);
+    struct sd *sd = (struct sd *) gspca_dev;
+
+    if( sd->sensor != SENSOR_MI1310_SOC)
+        spca5xxRegWrite(dev, 0x89, 0xffff, 0xffff, NULL, 0);
 }
 
 static void vc0321_shutdown(struct usb_spca50x *spca50x)
-- 
1.6.0.4