jf: Fix BCM4335 chip crashes caused by BT/WiFI concurrency

* The stock B+ driver works around chip crash that occurs when WiFi is on and BT is enabled/disabled by sending a magic patch to the hardware. * This patch was not in an external file, so some reverse engineering was required to extract it and put it in the correct format. * Enable the prepatch and enjoy crash-free Bluetooth :) Change-Id: I1ec8ec345c459ce97cc389d270b025ef61363018
LineageOS · Jul 5, 2013 · bd28b53 · bd28b53
1 parent 65a5395
commit bd28b53
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diff --git a/bluetooth/bcm4335_prepatch.hcd b/bluetooth/bcm4335_prepatch.hcd
diff --git a/bluetooth/vnd_jf.txt b/bluetooth/vnd_jf.txt
@@ -1,5 +1,6 @@
 BLUETOOTH_UART_DEVICE_PORT = "/dev/ttyHS0"
 FW_PATCHFILE_LOCATION = "/vendor/firmware"
+FW_PRE_PATCH="/vendor/firmware/bcm4335_prepatch.hcd"
 BT_WAKE_VIA_PROC = TRUE
 LPM_IDLE_TIMEOUT_MULTIPLE = 5
 BTVND_DBG = FALSE

diff --git a/jf-common.mk b/jf-common.mk
@@ -119,6 +119,9 @@ PRODUCT_PROPERTY_OVERRIDES += \
 # QRNGD
 PRODUCT_PACKAGES += qrngd
 
+# Prepatch to fix BT/WiFi bus lockups
+PRODUCT_COPY_FILES += device/samsung/jf-common/bluetooth/bcm4335_prepatch.hcd:system/vendor/firmware/bcm4335_prepatch.hcd
+
 #common build.props
 PRODUCT_PROPERTY_OVERRIDES += \
     ro.chipname=apq8064 \