openwrt/target/linux/bcm27xx/patches-5.4/950-0156-media-adv7180-Default-to-the-first-valid-input.patch
Álvaro Fernández Rojas f07e572f64 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>
2021-02-18 23:42:32 +01:00

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1.1 KiB
Diff

From b1d3f1c74057db79c45a11ed9ce0fc1e24d67401 Mon Sep 17 00:00:00 2001
From: Dave Stevenson <dave.stevenson@raspberrypi.org>
Date: Wed, 31 Oct 2018 14:57:46 +0000
Subject: [PATCH] media: adv7180: Default to the first valid input
The hardware default is differential CVBS on AIN1 & 2, which
isn't very useful.
Select the first input that is defined as valid for the
chip variant (typically CVBS_AIN1).
Signed-off-by: Dave Stevenson <dave.stevenson@raspberrypi.org>
---
drivers/media/i2c/adv7180.c | 13 +++++++++++++
1 file changed, 13 insertions(+)
--- a/drivers/media/i2c/adv7180.c
+++ b/drivers/media/i2c/adv7180.c
@@ -1246,6 +1246,7 @@ static const struct adv7180_chip_info ad
static int init_device(struct adv7180_state *state)
{
int ret;
+ int i;
mutex_lock(&state->mutex);
@@ -1292,6 +1293,18 @@ static int init_device(struct adv7180_st
goto out_unlock;
}
+ /* Select first valid input */
+ for (i = 0; i < 32; i++) {
+ if (BIT(i) & state->chip_info->valid_input_mask) {
+ ret = state->chip_info->select_input(state, i);
+
+ if (ret == 0) {
+ state->input = i;
+ break;
+ }
+ }
+ }
+
out_unlock:
mutex_unlock(&state->mutex);