generic: backport initial LEDs hw control support

Backport initial LEDs hw control support. Currently this is limited to
only rx/tx and link events for the netdev trigger but the API got
accepted and the additional modes are working on and will be backported
later.

Refresh every patch and add the additional config flag for QCA8K new
LEDs support.

Signed-off-by: Christian Marangi <ansuelsmth@gmail.com>
Signed-off-by: Daniel Golle <daniel@makrotopia.org>
(cherry picked from commit 0a4b309f41062ef40706162ae53b6428982a0685)

1 files changed, 59 insertions, 0 deletions

diff --git a/target/linux/generic/backport-5.15/815-v6.4-04-leds-Provide-stubs-for-when-CLASS_LED-NEW_LEDS-are-d.patch b/target/linux/generic/backport-5.15/815-v6.4-04-leds-Provide-stubs-for-when-CLASS_LED-NEW_LEDS-are-d.patch
new file mode 100644
index 0000000000..bc905b4468
--- /dev/null
+++ b/target/linux/generic/backport-5.15/815-v6.4-04-leds-Provide-stubs-for-when-CLASS_LED-NEW_LEDS-are-d.patch
@@ -0,0 +1,59 @@
+From e5029edd53937a29801ef507cee12e657ff31ea9 Mon Sep 17 00:00:00 2001
+From: Andrew Lunn <andrew@lunn.ch>
+Date: Mon, 17 Apr 2023 17:17:26 +0200
+Subject: [PATCH 4/9] leds: Provide stubs for when CLASS_LED & NEW_LEDS are
+ disabled
+
+Provide stubs for devm_led_classdev_register_ext() and
+led_init_default_state_get() so that LED drivers embedded within other
+drivers such as PHYs and Ethernet switches still build when LEDS_CLASS
+or NEW_LEDS are disabled. This also helps with Kconfig dependencies,
+which are somewhat hairy for phylib and mdio and only get worse when
+adding a dependency on LED_CLASS.
+
+Signed-off-by: Andrew Lunn <andrew@lunn.ch>
+Signed-off-by: Christian Marangi <ansuelsmth@gmail.com>
+Reviewed-by: Florian Fainelli <f.fainelli@gmail.com>
+Signed-off-by: David S. Miller <davem@davemloft.net>
+---
+ include/linux/leds.h | 18 ++++++++++++++++++
+ 1 file changed, 18 insertions(+)
+
+--- a/include/linux/leds.h
++++ b/include/linux/leds.h
+@@ -63,7 +63,15 @@ struct led_init_data {
+ 	bool devname_mandatory;
+ };
+ 
++#if IS_ENABLED(CONFIG_NEW_LEDS)
+ enum led_default_state led_init_default_state_get(struct fwnode_handle *fwnode);
++#else
++static inline enum led_default_state
++led_init_default_state_get(struct fwnode_handle *fwnode)
++{
++	return LEDS_DEFSTATE_OFF;
++}
++#endif
+ 
+ struct led_hw_trigger_type {
+ 	int dummy;
+@@ -198,9 +206,19 @@ static inline int led_classdev_register(
+ 	return led_classdev_register_ext(parent, led_cdev, NULL);
+ }
+ 
++#if IS_ENABLED(CONFIG_LEDS_CLASS)
+ int devm_led_classdev_register_ext(struct device *parent,
+ 					  struct led_classdev *led_cdev,
+ 					  struct led_init_data *init_data);
++#else
++static inline int
++devm_led_classdev_register_ext(struct device *parent,
++			       struct led_classdev *led_cdev,
++			       struct led_init_data *init_data)
++{
++	return 0;
++}
++#endif
+ 
+ static inline int devm_led_classdev_register(struct device *parent,
+ 					     struct led_classdev *led_cdev)