mirror of
https://github.com/openwrt/openwrt.git
synced 2024-12-18 21:28:02 +00:00
8c405cdccc
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>
67 lines
2.1 KiB
Diff
67 lines
2.1 KiB
Diff
From 6a0ae67b699bef301e835b814a416067567ecd39 Mon Sep 17 00:00:00 2001
|
|
From: Dave Stevenson <dave.stevenson@raspberrypi.com>
|
|
Date: Wed, 3 Apr 2024 16:06:08 +0100
|
|
Subject: [PATCH 1039/1085] media: bcm2835-unicam: Add option for a GPIO to
|
|
reflect FS/FE timing
|
|
|
|
The legacy stack had an option to have a GPIO track frame start and
|
|
end events to give basic synchronisation to the incoming image stream.
|
|
https://forums.raspberrypi.com/viewtopic.php?t=190314
|
|
|
|
Replicate this in the kernel Unicam driver.
|
|
|
|
Signed-off-by: Dave Stevenson <dave.stevenson@raspberrypi.com>
|
|
---
|
|
drivers/media/platform/bcm2835/bcm2835-unicam.c | 12 ++++++++++++
|
|
1 file changed, 12 insertions(+)
|
|
|
|
--- a/drivers/media/platform/bcm2835/bcm2835-unicam.c
|
|
+++ b/drivers/media/platform/bcm2835/bcm2835-unicam.c
|
|
@@ -49,6 +49,7 @@
|
|
#include <linux/device.h>
|
|
#include <linux/dma-mapping.h>
|
|
#include <linux/err.h>
|
|
+#include <linux/gpio/consumer.h>
|
|
#include <linux/init.h>
|
|
#include <linux/interrupt.h>
|
|
#include <linux/io.h>
|
|
@@ -543,6 +544,8 @@ struct unicam_device {
|
|
struct v4l2_device v4l2_dev;
|
|
struct media_device mdev;
|
|
|
|
+ struct gpio_desc *sync_gpio;
|
|
+
|
|
/* parent device */
|
|
struct platform_device *pdev;
|
|
/* subdevice async Notifier */
|
|
@@ -943,6 +946,8 @@ static irqreturn_t unicam_isr(int irq, v
|
|
if (fe) {
|
|
bool inc_seq = unicam->frame_started;
|
|
|
|
+ if (unicam->sync_gpio)
|
|
+ gpiod_set_value(unicam->sync_gpio, 0);
|
|
/*
|
|
* Ensure we have swapped buffers already as we can't
|
|
* stop the peripheral. If no buffer is available, use a
|
|
@@ -1003,6 +1008,10 @@ static irqreturn_t unicam_isr(int irq, v
|
|
* aka frame start.
|
|
*/
|
|
ts = ktime_get_ns();
|
|
+
|
|
+ if (unicam->sync_gpio)
|
|
+ gpiod_set_value(unicam->sync_gpio, 1);
|
|
+
|
|
for (i = 0; i < ARRAY_SIZE(unicam->node); i++) {
|
|
if (!unicam->node[i].streaming)
|
|
continue;
|
|
@@ -3407,6 +3416,9 @@ static int unicam_probe(struct platform_
|
|
goto err_unicam_put;
|
|
}
|
|
|
|
+ unicam->sync_gpio = devm_gpiod_get_optional(&pdev->dev, "sync",
|
|
+ GPIOD_OUT_LOW);
|
|
+
|
|
ret = platform_get_irq(pdev, 0);
|
|
if (ret <= 0) {
|
|
dev_err(&pdev->dev, "No IRQ resource\n");
|