From: Andy Walls <awalls@md.metrocast.net>
Date: Sun, 1 Aug 2010 02:28:37 +0000 (-0300)
Subject: V4L/DVB: cx23885, cx25840: Report the actual length of an IR Rx timeout event
X-Git-Url: https://git.stricted.de/?a=commitdiff_plain;h=2560d94e330f35776e944b54256a526a19259429;p=GitHub%2FLineageOS%2Fandroid_kernel_motorola_exynos9610.git

V4L/DVB: cx23885, cx25840: Report the actual length of an IR Rx timeout event

Instead of reporting an IR Rx timeout event as a ridiculously
long space, report it as a space of the lenght of the timeout.

This partially fixes operation with LIRC without breaking
interoperation with the in kernel decoders.  The gaps lengths
reported to LIRC are still not real however.

Signed-off-by: Andy Walls <awalls@md.metrocast.net>
Signed-off-by: Mauro Carvalho Chehab <mchehab@redhat.com>
---

diff --git a/drivers/media/video/cx23885/cx23885-input.c b/drivers/media/video/cx23885/cx23885-input.c
index 3f924e21b957..252817acc35b 100644
--- a/drivers/media/video/cx23885/cx23885-input.c
+++ b/drivers/media/video/cx23885/cx23885-input.c
@@ -46,12 +46,6 @@
 
 static void convert_measurement(u32 x, struct ir_raw_event *y)
 {
-	if (x == V4L2_SUBDEV_IR_PULSE_RX_SEQ_END) {
-		y->pulse = false;
-		y->duration = V4L2_SUBDEV_IR_PULSE_MAX_WIDTH_NS;
-		return;
-	}
-
 	y->pulse = (x & V4L2_SUBDEV_IR_PULSE_LEVEL_MASK) ? true : false;
 	y->duration = x & V4L2_SUBDEV_IR_PULSE_MAX_WIDTH_NS;
 }
diff --git a/drivers/media/video/cx23885/cx23888-ir.c b/drivers/media/video/cx23885/cx23888-ir.c
index aa07286b8d9b..684d23db98a7 100644
--- a/drivers/media/video/cx23885/cx23888-ir.c
+++ b/drivers/media/video/cx23885/cx23888-ir.c
@@ -675,16 +675,18 @@ static int cx23888_ir_rx_read(struct v4l2_subdev *sd, u8 *buf, size_t count,
 	*num = n * sizeof(u32);
 
 	for (p = (u32 *) buf, i = 0; i < n; p++, i++) {
+
 		if ((*p & FIFO_RXTX_RTO) == FIFO_RXTX_RTO) {
-			*p = V4L2_SUBDEV_IR_PULSE_RX_SEQ_END;
+			/* Assume RTO was because of no IR light input */
+			u = 0;
 			v4l2_dbg(2, ir_888_debug, sd, "rx read: end of rx\n");
-			continue;
+		} else {
+			u = (*p & FIFO_RXTX_LVL)
+					  ? V4L2_SUBDEV_IR_PULSE_LEVEL_MASK : 0;
+			if (invert)
+				u = u ? 0 : V4L2_SUBDEV_IR_PULSE_LEVEL_MASK;
 		}
 
-		u = (*p & FIFO_RXTX_LVL) ? V4L2_SUBDEV_IR_PULSE_LEVEL_MASK : 0;
-		if (invert)
-			u = u ? 0 : V4L2_SUBDEV_IR_PULSE_LEVEL_MASK;
-
 		v = (u32) pulse_width_count_to_ns((u16) (*p & FIFO_RXTX),
 						  divider);
 		if (v >= V4L2_SUBDEV_IR_PULSE_MAX_WIDTH_NS)
diff --git a/drivers/media/video/cx25840/cx25840-ir.c b/drivers/media/video/cx25840/cx25840-ir.c
index 326c2554c05c..be23c5b37a2f 100644
--- a/drivers/media/video/cx25840/cx25840-ir.c
+++ b/drivers/media/video/cx25840/cx25840-ir.c
@@ -677,16 +677,18 @@ static int cx25840_ir_rx_read(struct v4l2_subdev *sd, u8 *buf, size_t count,
 	*num = n * sizeof(u32);
 
 	for (p = (u32 *) buf, i = 0; i < n; p++, i++) {
+
 		if ((*p & FIFO_RXTX_RTO) == FIFO_RXTX_RTO) {
-			*p = V4L2_SUBDEV_IR_PULSE_RX_SEQ_END;
+			/* Assume RTO was because of no IR light input */
+			u = 0;
 			v4l2_dbg(2, ir_debug, sd, "rx read: end of rx\n");
-			continue;
+		} else {
+			u = (*p & FIFO_RXTX_LVL)
+					  ? V4L2_SUBDEV_IR_PULSE_LEVEL_MASK : 0;
+			if (invert)
+				u = u ? 0 : V4L2_SUBDEV_IR_PULSE_LEVEL_MASK;
 		}
 
-		u = (*p & FIFO_RXTX_LVL) ? V4L2_SUBDEV_IR_PULSE_LEVEL_MASK : 0;
-		if (invert)
-			u = u ? 0 : V4L2_SUBDEV_IR_PULSE_LEVEL_MASK;
-
 		v = (u32) pulse_width_count_to_ns((u16) (*p & FIFO_RXTX),
 						  divider);
 		if (v >= V4L2_SUBDEV_IR_PULSE_MAX_WIDTH_NS)