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elan_5515 support three methods to get fwdata. 1.FROM_SYS_ETC_FIRMWARE :/vendor/etc/firmware/elants_i2c.ekt 2.FROM_SDCARD_FIRMWARE: /data/local/tmp/elants_i2c.ekt 3.FROM_DRIVER_FIRMWARE: in driver code directory *.i choose NO.1. Signed-off-by: Wangqiang Guo <kay.guo@rock-chips.com> Change-Id: I9beada23a1abde4995df243f9cce9423f23ab69c