From 7e970c18f85f99acc678d90128b6e01dce1bf273 Mon Sep 17 00:00:00 2001
From: hc <hc@nodka.com>
Date: Fri, 01 Nov 2024 02:40:12 +0000
Subject: [PATCH] gmac get mac form eeprom
---
kernel/drivers/base/regmap/regmap.c | 41 +++++++++++++++++++++++++++++++++++------
1 files changed, 35 insertions(+), 6 deletions(-)
diff --git a/kernel/drivers/base/regmap/regmap.c b/kernel/drivers/base/regmap/regmap.c
index 55a30af..f586293 100644
--- a/kernel/drivers/base/regmap/regmap.c
+++ b/kernel/drivers/base/regmap/regmap.c
@@ -14,6 +14,7 @@
#include <linux/property.h>
#include <linux/rbtree.h>
#include <linux/sched.h>
+#include <linux/dovetail.h>
#include <linux/delay.h>
#include <linux/log2.h>
#include <linux/hwspinlock.h>
@@ -523,6 +524,23 @@
spin_unlock_irqrestore(&map->spinlock, map->spinlock_flags);
}
+static void regmap_lock_oob(void *__map)
+__acquires(&map->oob_lock)
+{
+ struct regmap *map = __map;
+ unsigned long flags;
+
+ raw_spin_lock_irqsave(&map->oob_lock, flags);
+ map->spinlock_flags = flags;
+}
+
+static void regmap_unlock_oob(void *__map)
+__releases(&map->oob_lock)
+{
+ struct regmap *map = __map;
+ raw_spin_unlock_irqrestore(&map->oob_lock, map->spinlock_flags);
+}
+
static void dev_get_regmap_release(struct device *dev, void *res)
{
/*
@@ -761,18 +779,29 @@
} else {
if ((bus && bus->fast_io) ||
config->fast_io) {
- spin_lock_init(&map->spinlock);
- map->lock = regmap_lock_spinlock;
- map->unlock = regmap_unlock_spinlock;
- lockdep_set_class_and_name(&map->spinlock,
- lock_key, lock_name);
- } else {
+ if (dovetailing() && config->oob_io) {
+ raw_spin_lock_init(&map->oob_lock);
+ map->lock = regmap_lock_oob;
+ map->unlock = regmap_unlock_oob;
+ lockdep_set_class_and_name(&map->oob_lock,
+ lock_key, lock_name);
+ } else {
+ spin_lock_init(&map->spinlock);
+ map->lock = regmap_lock_spinlock;
+ map->unlock = regmap_unlock_spinlock;
+ lockdep_set_class_and_name(&map->spinlock,
+ lock_key, lock_name);
+ }
+ } else if (!config->oob_io) {
mutex_init(&map->mutex);
map->lock = regmap_lock_mutex;
map->unlock = regmap_unlock_mutex;
map->can_sleep = true;
lockdep_set_class_and_name(&map->mutex,
lock_key, lock_name);
+ } else {
+ ret = -ENXIO;
+ goto err_name;
}
map->lock_arg = map;
}
--
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