bcm27xx: add support for linux v5.15

Build system: x86_64
Build-tested: bcm2708, bcm2709, bcm2710, bcm2711
Run-tested: bcm2708/RPiB+, bcm2709/RPi3B, bcm2710/RPi3B, bcm2711/RPi4B

Signed-off-by: Marty Jones <mj8263788@gmail.com>
Signed-off-by: Álvaro Fernández Rojas <noltari@gmail.com>

1 files changed, 45 insertions, 0 deletions

diff --git a/target/linux/bcm27xx/patches-5.15/950-0123-media-adv7180-Default-to-the-first-valid-input.patch b/target/linux/bcm27xx/patches-5.15/950-0123-media-adv7180-Default-to-the-first-valid-input.patch
new file mode 100644
index 0000000000..c3e59aa4ef
--- /dev/null
+++ b/target/linux/bcm27xx/patches-5.15/950-0123-media-adv7180-Default-to-the-first-valid-input.patch
@@ -0,0 +1,45 @@
+From 117d61f00d02070ce027db26c7fc3c6dcd7d405a 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
+@@ -1291,6 +1291,7 @@ static const struct adv7180_chip_info ad
+ static int init_device(struct adv7180_state *state)
+ {
+ 	int ret;
++	int i;
+ 
+ 	mutex_lock(&state->mutex);
+ 
+@@ -1338,6 +1339,18 @@ 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);
+