mt76: mt7921: add wifisys reset support in debugfs

Introduce chip_reset knob in mt7921 debugfs to export a way to users
able to trigger wifi reset, and group the similar operations
previously defined in chip_config in the same knob.

Signed-off-by: Sean Wang <sean.wang@mediatek.com>
Signed-off-by: Felix Fietkau <nbd@nbd.name>

diff --git a/drivers/net/wireless/mediatek/mt76/mt7921/debugfs.c b/drivers/net/wireless/mediatek/mt76/mt7921/debugfs.c
index 1a37838..5a54cd8 100644 (file)
--- a/drivers/net/wireless/mediatek/mt76/mt7921/debugfs.c
+++ b/drivers/net/wireless/mediatek/mt76/mt7921/debugfs.c
@@ -279,19 +279,28 @@ mt7921_pm_idle_timeout_get(void *data, u64 *val)
 DEFINE_DEBUGFS_ATTRIBUTE(fops_pm_idle_timeout, mt7921_pm_idle_timeout_get,
                         mt7921_pm_idle_timeout_set, "%lld\n");
 
-static int mt7921_config(void *data, u64 val)
+static int mt7921_chip_reset(void *data, u64 val)
 {
        struct mt7921_dev *dev = data;
-       int ret;
-
-       mt7921_mutex_acquire(dev);
-       ret = mt76_connac_mcu_chip_config(&dev->mt76);
-       mt7921_mutex_release(dev);
+       int ret = 0;
+
+       switch (val) {
+       case 1:
+               /* Reset wifisys directly. */
+               mt7921_reset(&dev->mt76);
+               break;
+       default:
+               /* Collect the core dump before reset wifisys. */
+               mt7921_mutex_acquire(dev);
+               ret = mt76_connac_mcu_chip_config(&dev->mt76);
+               mt7921_mutex_release(dev);
+               break;
+       }
 
        return ret;
 }
 
-DEFINE_DEBUGFS_ATTRIBUTE(fops_config, NULL, mt7921_config, "%lld\n");
+DEFINE_DEBUGFS_ATTRIBUTE(fops_reset, NULL, mt7921_chip_reset, "%lld\n");
 
 int mt7921_init_debugfs(struct mt7921_dev *dev)
 {
@@ -312,7 +321,7 @@ int mt7921_init_debugfs(struct mt7921_dev *dev)
        debugfs_create_file("runtime-pm", 0600, dir, dev, &fops_pm);
        debugfs_create_file("idle-timeout", 0600, dir, dev,
                            &fops_pm_idle_timeout);
-       debugfs_create_file("chip_config", 0600, dir, dev, &fops_config);
+       debugfs_create_file("chip_reset", 0600, dir, dev, &fops_reset);
 
        return 0;
 }