From patchwork Sat Jul 8 18:29:36 2023 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 8bit X-Patchwork-Submitter: Christian Marangi X-Patchwork-Id: 701483 Return-Path: X-Spam-Checker-Version: SpamAssassin 3.4.0 (2014-02-07) on aws-us-west-2-korg-lkml-1.web.codeaurora.org Received: from vger.kernel.org (vger.kernel.org [23.128.96.18]) by smtp.lore.kernel.org (Postfix) with ESMTP id CB27BC001B0 for ; Sat, 8 Jul 2023 18:29:49 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S229986AbjGHS3r (ORCPT ); Sat, 8 Jul 2023 14:29:47 -0400 Received: from lindbergh.monkeyblade.net ([23.128.96.19]:49634 "EHLO lindbergh.monkeyblade.net" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S229458AbjGHS3q (ORCPT ); Sat, 8 Jul 2023 14:29:46 -0400 Received: from mail-wm1-x334.google.com (mail-wm1-x334.google.com [IPv6:2a00:1450:4864:20::334]) by lindbergh.monkeyblade.net (Postfix) with ESMTPS id 5D4A7130; Sat, 8 Jul 2023 11:29:45 -0700 (PDT) Received: by mail-wm1-x334.google.com with SMTP id 5b1f17b1804b1-3fbf1b82de7so24520085e9.1; Sat, 08 Jul 2023 11:29:45 -0700 (PDT) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=gmail.com; s=20221208; t=1688840984; x=1691432984; h=content-transfer-encoding:mime-version:references:in-reply-to :message-id:date:subject:cc:to:from:from:to:cc:subject:date :message-id:reply-to; bh=aRlinllzuoLno5ix8NJN30aYnS4fPlc7sOxq/5PjHIk=; b=qu+RlsIaWJd8WTxko1JbxVTi2ZRF7I15gRBdEyTNLfm4+1YU0LEOFxXJKCmCZx4YPc Ki0bBjXQwBl8NaKHddnzIJI2Mij6+V+yE6uvl6l1XmSAVrYvC5sG2VjQhUsxakdvkBK1 39b+6bIJw2iuskMXwiLzm3PLKfI3LYPiUsDt6HAPSpYnSJFCkclV3zcMU3s9mg/IG6GL +VOY8OuxYuucrplErZc5fXwHGZfhcmqkV2B0eq3xGJdAzmYeMET5T7QEAWtN9BX7oCFu M7ddlT44sT/CngI3SzNKFmrKkYG4nwEP1EQmoszDP3zkW5xtBfsGc0PlKdfD39LKBaFF Twdg== X-Google-DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=1e100.net; s=20221208; t=1688840984; x=1691432984; h=content-transfer-encoding:mime-version:references:in-reply-to :message-id:date:subject:cc:to:from:x-gm-message-state:from:to:cc :subject:date:message-id:reply-to; bh=aRlinllzuoLno5ix8NJN30aYnS4fPlc7sOxq/5PjHIk=; b=UasoNzYV1rodkMyaYsjG5AKfh2Piw2CiiCItl1WJHuLhyywIolWaXX7EfY56rLafOB Yr6MpXyODldynA6U1FA0vjL+0wFVcOcbI1Uz4E0UF2GYUBYgWZa6rkNvTO1Xrc3l66I3 SHGak6HRyBKgO2l5U3MdhtGV9gxjnfdgH/KA+zlrkYWjy4POE51wJ/TqdVMXJGTollm2 VFfnf/JMQKb2NRQgl4qEfqUHY9Z86V8QN/4aaL7m/43rvnhBXLtG/daO6ruBL6H7P1QB dKsXhA37M/377R0tssNcgmVRcszt85yYUC91wFO3uEKe00pEwWe4L8PcgqFoH6xAxhLr LbzA== X-Gm-Message-State: ABy/qLYAYWO31Ty0sa7emuy4lcOfyvRRbYTB/8KWICwDix+4iPWNddY/ olDQIYEAdN2y+9/9X3dpTRE= X-Google-Smtp-Source: APBJJlHQCf5NSpNxS5BwssHQcf8A1hFtRUGQ9JeBaBFBFtD02S1IhjHLWTq+vacSUBIVP3j3aXcnkw== X-Received: by 2002:a05:600c:2207:b0:3f7:e660:cdc5 with SMTP id z7-20020a05600c220700b003f7e660cdc5mr7583435wml.9.1688840983788; Sat, 08 Jul 2023 11:29:43 -0700 (PDT) Received: from localhost.localdomain (93-34-93-173.ip49.fastwebnet.it. [93.34.93.173]) by smtp.googlemail.com with ESMTPSA id h9-20020adfe989000000b0030647449730sm7492067wrm.74.2023.07.08.11.29.42 (version=TLS1_3 cipher=TLS_AES_256_GCM_SHA384 bits=256/256); Sat, 08 Jul 2023 11:29:43 -0700 (PDT) From: Christian Marangi To: Felix Fietkau , Lorenzo Bianconi , Ryder Lee , Shayne Chen , Sean Wang , Kalle Valo , Matthias Brugger , AngeloGioacchino Del Regno , linux-wireless@vger.kernel.org, linux-kernel@vger.kernel.org, linux-arm-kernel@lists.infradead.org, linux-mediatek@lists.infradead.org Cc: Christian Marangi Subject: [PATCH 2/2] wifi: mt76: add support for providing eeprom in nvmem cells Date: Sat, 8 Jul 2023 20:29:36 +0200 Message-Id: <20230708182936.24469-2-ansuelsmth@gmail.com> X-Mailer: git-send-email 2.40.1 In-Reply-To: <20230708182936.24469-1-ansuelsmth@gmail.com> References: <20230708182936.24469-1-ansuelsmth@gmail.com> MIME-Version: 1.0 Precedence: bulk List-ID: X-Mailing-List: linux-wireless@vger.kernel.org Add support for providing eeprom in nvmem cells by adding nvmem cell as an alternative source for mt76_get_of_eeprom(). Nvmem cells will follow standard nvmem cell definition and needs to be called 'eeprom' to be correctly identified. Signed-off-by: Christian Marangi Reviewed-by: Daniel Golle Tested-by: Daniel Golle Reviewed-by: Rafał Miłecki --- drivers/net/wireless/mediatek/mt76/eeprom.c | 38 ++++++++++++++++++++- 1 file changed, 37 insertions(+), 1 deletion(-) diff --git a/drivers/net/wireless/mediatek/mt76/eeprom.c b/drivers/net/wireless/mediatek/mt76/eeprom.c index c3a762074be8..36564930aef1 100644 --- a/drivers/net/wireless/mediatek/mt76/eeprom.c +++ b/drivers/net/wireless/mediatek/mt76/eeprom.c @@ -6,6 +6,7 @@ #include #include #include +#include #include #include "mt76.h" @@ -105,6 +106,37 @@ static int mt76_get_of_epprom_from_mtd(struct mt76_dev *dev, void *eep, int offs #endif } +static int mt76_get_of_epprom_from_nvmem(struct mt76_dev *dev, void *eep, int len) +{ + struct device_node *np = dev->dev->of_node; + struct nvmem_cell *cell; + const void *data; + size_t retlen; + int ret = 0; + + cell = of_nvmem_cell_get(np, "eeprom"); + if (IS_ERR(cell)) + return PTR_ERR(cell); + + data = nvmem_cell_read(cell, &retlen); + nvmem_cell_put(cell); + + if (IS_ERR(data)) + return PTR_ERR(data); + + if (retlen < len) { + ret = -EINVAL; + goto exit; + } + + memcpy(eep, data, len); + +exit: + kfree(data); + + return ret; +} + int mt76_get_of_eeprom(struct mt76_dev *dev, void *eep, int offset, int len) { struct device_node *np = dev->dev->of_node; @@ -117,7 +149,11 @@ int mt76_get_of_eeprom(struct mt76_dev *dev, void *eep, int offset, int len) if (!ret) return 0; - return mt76_get_of_epprom_from_mtd(dev, eep, offset, len); + ret = mt76_get_of_epprom_from_mtd(dev, eep, offset, len); + if (!ret) + return 0; + + return mt76_get_of_epprom_from_nvmem(dev, eep, len); } EXPORT_SYMBOL_GPL(mt76_get_of_eeprom);