openwrt/target/linux/bcm27xx/patches-6.6/950-0640-media-rp1-cfe-Fix-width-height-in-cfe_start_channel.patch
Álvaro Fernández Rojas 8c405cdccc bcm27xx: add 6.6 kernel patches
The patches were generated from the RPi repo with the following command:
git format-patch v6.6.34..rpi-6.1.y

Some patches needed rebasing and, as usual, the applied and reverted, wireless
drivers, Github workflows, READMEs and defconfigs patches were removed.

Signed-off-by: Álvaro Fernández Rojas <noltari@gmail.com>
2024-06-18 18:52:49 +02:00

90 lines
3.0 KiB
Diff

From c71803b0242c30f71cd700657bbde8142138a8d1 Mon Sep 17 00:00:00 2001
From: Tomi Valkeinen <tomi.valkeinen@ideasonboard.com>
Date: Wed, 27 Sep 2023 16:00:39 +0300
Subject: [PATCH 0640/1085] media: rp1: cfe: Fix width & height in
cfe_start_channel()
The logic for handling width & height in cfe_start_channel() is somewhat
odd and, afaics, broken. The code reads:
bool start_fe = is_fe_enabled(cfe) &&
test_all_nodes(cfe, NODE_ENABLED, NODE_STREAMING);
if (start_fe || is_image_output_node(node)) {
width = node->fmt.fmt.pix.width;
height = node->fmt.fmt.pix.height;
}
cfe_start_channel() is called for all video nodes that will be used. So
this means that if, say, fe_stats is enabled as the last node, start_fe
will be true, and width and height will be taken from fe_stats' node.
The width and height will thus contain garbage, which then gets
programmed to the csi2 registers.
It seems that this often still works fine, though, probably if the width
& height are large enough.
Drop the above code, and instead get the width & height from the csi2
subdev's sink pad for the csi2 channel that is used. For metadata the
width & height will be 0 as before.
Signed-off-by: Tomi Valkeinen <tomi.valkeinen@ideasonboard.com>
---
drivers/media/platform/raspberrypi/rp1_cfe/cfe.c | 16 ++++++++++------
1 file changed, 10 insertions(+), 6 deletions(-)
--- a/drivers/media/platform/raspberrypi/rp1_cfe/cfe.c
+++ b/drivers/media/platform/raspberrypi/rp1_cfe/cfe.c
@@ -763,20 +763,16 @@ static void cfe_start_channel(struct cfe
struct v4l2_mbus_framefmt *source_fmt;
const struct cfe_fmt *fmt;
unsigned long flags;
- unsigned int width = 0, height = 0;
bool start_fe = is_fe_enabled(cfe) &&
test_all_nodes(cfe, NODE_ENABLED, NODE_STREAMING);
cfe_dbg("%s: [%s]\n", __func__, node_desc[node->id].name);
- if (start_fe || is_image_output_node(node)) {
- width = node->fmt.fmt.pix.width;
- height = node->fmt.fmt.pix.height;
- }
-
state = v4l2_subdev_lock_and_get_active_state(&cfe->csi2.sd);
if (start_fe) {
+ unsigned int width, height;
+
WARN_ON(!is_fe_enabled(cfe));
cfe_dbg("%s: %s using csi2 channel %d\n",
__func__, node_desc[FE_OUT0].name,
@@ -785,6 +781,9 @@ static void cfe_start_channel(struct cfe
source_fmt = v4l2_subdev_get_pad_format(&cfe->csi2.sd, state, cfe->fe_csi2_channel);
fmt = find_format_by_code(source_fmt->code);
+ width = source_fmt->width;
+ height = source_fmt->height;
+
/*
* Start the associated CSI2 Channel as well.
*
@@ -800,6 +799,8 @@ static void cfe_start_channel(struct cfe
}
if (is_csi2_node(node)) {
+ unsigned int width = 0, height = 0;
+
u32 mode = CSI2_MODE_NORMAL;
source_fmt = v4l2_subdev_get_pad_format(&cfe->csi2.sd, state,
@@ -807,6 +808,9 @@ static void cfe_start_channel(struct cfe
fmt = find_format_by_code(source_fmt->code);
if (is_image_output_node(node)) {
+ width = source_fmt->width;
+ height = source_fmt->height;
+
if (node->fmt.fmt.pix.pixelformat ==
fmt->remap[CFE_REMAP_16BIT])
mode = CSI2_MODE_REMAP;