From patchwork Sat Nov 23 09:54:01 2019 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Lorenzo Bianconi X-Patchwork-Id: 11258753 X-Patchwork-Delegate: nbd@nbd.name Return-Path: Received: from mail.kernel.org (pdx-korg-mail-1.web.codeaurora.org [172.30.200.123]) by pdx-korg-patchwork-2.web.codeaurora.org (Postfix) with ESMTP id 097511593 for ; Sat, 23 Nov 2019 09:55:09 +0000 (UTC) Received: from vger.kernel.org (vger.kernel.org [209.132.180.67]) by mail.kernel.org (Postfix) with ESMTP id D41EF2071B for ; Sat, 23 Nov 2019 09:55:08 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=kernel.org; s=default; t=1574502908; bh=71KvN8DCR94x7xslYbCNrCnuRBb8jesfxVzzsK1oeUg=; h=From:To:Cc:Subject:Date:List-ID:From; b=nMf9af1ynclqMfSnBHGpckaCooS6slpHBH/DZqbu+Mviduc1bWgNJ7LUhzoPnxyGH cJs01pPquQxY61txlPjnbuElaOjxcTznH+7fvvTrJZPqDy4zIWm2Bq4o4lkVOhkQ+J 3IYYORIhtS7xeklS6P9bqd2HVl5Re+KpEvI/xZiQ= Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1726494AbfKWJyU (ORCPT ); Sat, 23 Nov 2019 04:54:20 -0500 Received: from mail.kernel.org ([198.145.29.99]:34832 "EHLO mail.kernel.org" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1726141AbfKWJyU (ORCPT ); Sat, 23 Nov 2019 04:54:20 -0500 Received: from localhost.localdomain (unknown [77.139.212.74]) (using TLSv1.2 with cipher ECDHE-RSA-AES256-GCM-SHA384 (256/256 bits)) (No client certificate requested) by mail.kernel.org (Postfix) with ESMTPSA id 5778220658; Sat, 23 Nov 2019 09:54:18 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=kernel.org; s=default; t=1574502859; bh=71KvN8DCR94x7xslYbCNrCnuRBb8jesfxVzzsK1oeUg=; h=From:To:Cc:Subject:Date:From; b=gJyWY2hcvQg0ALxq6TSuGj7584eUr5rdbTGpXRGdwXfBe5j5n5S8RBQk3cU6s+sCx eLLTmeXjW2QpIbI9kz8aRdQaNmqX8A1TtkzVcN8pH8Pqrb3oWKyy7WfA3vzQTHOb3Z cmWTNksG1fDMzm787Efw/cB06i8+H5bwEd3btw1E= From: Lorenzo Bianconi To: nbd@nbd.name Cc: linux-wireless@vger.kernel.org, lorenzo.bianconi@redhat.com, kevin.patrick.schmidt@googlemail.com Subject: [PATCH] mt76: eeprom: add support for big endian eeprom partition Date: Sat, 23 Nov 2019 11:54:01 +0200 Message-Id: <61e89623446ed8914e5969114c7ae8c623f3e3ba.1574502651.git.lorenzo@kernel.org> X-Mailer: git-send-email 2.21.0 MIME-Version: 1.0 Sender: linux-wireless-owner@vger.kernel.org Precedence: bulk List-ID: X-Mailing-List: linux-wireless@vger.kernel.org mt76x0e users reported some devices (e.g TP-Link Archer VR200v) have been flashed with big endian radio partition. Add the possibility to specify eeprom endianness using big-endian dts property and in case covert eeprom data in little endian Tested-by: Kevin Schmidt Signed-off-by: Lorenzo Bianconi --- drivers/net/wireless/mediatek/mt76/eeprom.c | 10 ++++++++++ 1 file changed, 10 insertions(+) diff --git a/drivers/net/wireless/mediatek/mt76/eeprom.c b/drivers/net/wireless/mediatek/mt76/eeprom.c index 804224e81103..33d992d5662a 100644 --- a/drivers/net/wireless/mediatek/mt76/eeprom.c +++ b/drivers/net/wireless/mediatek/mt76/eeprom.c @@ -64,6 +64,16 @@ mt76_get_of_eeprom(struct mt76_dev *dev, int len) goto out_put_node; } + if (of_property_read_bool(dev->dev->of_node, "big-endian")) { + u8 *data = (u8 *)dev->eeprom.data; + int i; + + /* convert eeprom data in Little Endian */ + for (i = 0; i < round_down(len, 2); i += 2) + put_unaligned_le16(get_unaligned_be16(&data[i]), + &data[i]); + } + out_put_node: of_node_put(np); return ret;