bcm27xx: import latest patches from the RPi foundation

bcm2708: boot tested on RPi B+ v1.2
bcm2709: boot tested on RPi 3B v1.2 and RPi 4B v1.1 4G
bcm2710: boot tested on RPi 3B v1.2
bcm2711: boot tested on RPi 4B v1.1 4G

Signed-off-by: Álvaro Fernández Rojas <noltari@gmail.com>

1 files changed, 70 insertions, 0 deletions

diff --git a/target/linux/bcm27xx/patches-5.4/950-0939-staging-vc04_service-codec-Allow-start_streaming-to-.patch b/target/linux/bcm27xx/patches-5.4/950-0939-staging-vc04_service-codec-Allow-start_streaming-to-.patch
new file mode 100644
index 0000000000..66a551d2d7
--- /dev/null
+++ b/target/linux/bcm27xx/patches-5.4/950-0939-staging-vc04_service-codec-Allow-start_streaming-to-.patch
@@ -0,0 +1,70 @@
+From d88ef7d22cac032c4ddf7e4b8af5982d5a3019cb Mon Sep 17 00:00:00 2001
+From: Dave Stevenson <dave.stevenson@raspberrypi.com>
+Date: Thu, 13 Aug 2020 17:01:27 +0100
+Subject: [PATCH] staging: vc04_service: codec: Allow start_streaming
+ to update the buffernum
+
+start_streaming passes a count of how many buffers have been queued
+to videobuf2.
+
+Allow this value to update the number of buffers the VPU allocates
+on a port to avoid buffer recycling issues.
+
+Signed-off-by: Dave Stevenson <dave.stevenson@raspberrypi.com>
+---
+ .../bcm2835-codec/bcm2835-v4l2-codec.c        | 23 +++++++++++++++----
+ 1 file changed, 19 insertions(+), 4 deletions(-)
+
+--- a/drivers/staging/vc04_services/bcm2835-codec/bcm2835-v4l2-codec.c
++++ b/drivers/staging/vc04_services/bcm2835-codec/bcm2835-v4l2-codec.c
+@@ -2268,6 +2268,7 @@ static int bcm2835_codec_start_streaming
+ 	struct bcm2835_codec_ctx *ctx = vb2_get_drv_priv(q);
+ 	struct bcm2835_codec_dev *dev = ctx->dev;
+ 	struct bcm2835_codec_q_data *q_data = get_q_data(ctx, q->type);
++	struct vchiq_mmal_port *port = get_port_data(ctx, q->type);
+ 	int ret;
+ 
+ 	v4l2_dbg(1, debug, &ctx->dev->v4l2_dev, "%s: type: %d count %d\n",
+@@ -2283,6 +2284,20 @@ static int bcm2835_codec_start_streaming
+ 		ctx->component_enabled = true;
+ 	}
+ 
++	if (count < port->minimum_buffer.num)
++		count = port->minimum_buffer.num;
++
++	if (port->current_buffer.num != count + 1) {
++		v4l2_dbg(2, debug, &ctx->dev->v4l2_dev, "%s: ctx:%p, buffer count changed %u to %u\n",
++			 __func__, ctx, port->current_buffer.num, count + 1);
++
++		port->current_buffer.num = count + 1;
++		ret = vchiq_mmal_port_set_format(dev->instance, port);
++		if (ret)
++			v4l2_err(&ctx->dev->v4l2_dev, "%s: Error updating buffer count, ret %d\n",
++				 __func__, ret);
++	}
++
+ 	if (q->type == V4L2_BUF_TYPE_VIDEO_OUTPUT_MPLANE) {
+ 		/*
+ 		 * Create the EOS buffer.
+@@ -2294,17 +2309,17 @@ static int bcm2835_codec_start_streaming
+ 				      &q_data->eos_buffer.mmal);
+ 		q_data->eos_buffer_in_use = false;
+ 
+-		ctx->component->input[0].cb_ctx = ctx;
++		port->cb_ctx = ctx;
+ 		ret = vchiq_mmal_port_enable(dev->instance,
+-					     &ctx->component->input[0],
++					     port,
+ 					     ip_buffer_cb);
+ 		if (ret)
+ 			v4l2_err(&ctx->dev->v4l2_dev, "%s: Failed enabling i/p port, ret %d\n",
+ 				 __func__, ret);
+ 	} else {
+-		ctx->component->output[0].cb_ctx = ctx;
++		port->cb_ctx = ctx;
+ 		ret = vchiq_mmal_port_enable(dev->instance,
+-					     &ctx->component->output[0],
++					     port,
+ 					     op_buffer_cb);
+ 		if (ret)
+ 			v4l2_err(&ctx->dev->v4l2_dev, "%s: Failed enabling o/p port, ret %d\n",