From patchwork Wed Oct 5 12:12:10 2016 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Nelson Chang X-Patchwork-Id: 9362799 Return-Path: Received: from mail.wl.linuxfoundation.org (pdx-wl-mail.web.codeaurora.org [172.30.200.125]) by pdx-korg-patchwork.web.codeaurora.org (Postfix) with ESMTP id 7936F607D6 for ; Wed, 5 Oct 2016 12:12:54 +0000 (UTC) Received: from mail.wl.linuxfoundation.org (localhost [127.0.0.1]) by mail.wl.linuxfoundation.org (Postfix) with ESMTP id 6A46F2893F for ; Wed, 5 Oct 2016 12:12:54 +0000 (UTC) Received: by mail.wl.linuxfoundation.org (Postfix, from userid 486) id 5C71E286DC; Wed, 5 Oct 2016 12:12:54 +0000 (UTC) X-Spam-Checker-Version: SpamAssassin 3.3.1 (2010-03-16) on pdx-wl-mail.web.codeaurora.org X-Spam-Level: X-Spam-Status: No, score=-4.2 required=2.0 tests=BAYES_00, RCVD_IN_DNSWL_MED, UNPARSEABLE_RELAY autolearn=ham version=3.3.1 Received: from bombadil.infradead.org (bombadil.infradead.org [198.137.202.9]) (using TLSv1.2 with cipher AES128-GCM-SHA256 (128/128 bits)) (No client certificate requested) by mail.wl.linuxfoundation.org (Postfix) with ESMTPS id AA318286DC for ; Wed, 5 Oct 2016 12:12:50 +0000 (UTC) Received: from localhost ([127.0.0.1] helo=bombadil.infradead.org) by bombadil.infradead.org with esmtp (Exim 4.85_2 #1 (Red Hat Linux)) id 1brl45-0008Os-TY; Wed, 05 Oct 2016 12:12:49 +0000 Received: from [210.61.82.184] (helo=mailgw02.mediatek.com) by bombadil.infradead.org with esmtp (Exim 4.85_2 #1 (Red Hat Linux)) id 1brl3x-0008Il-Di for linux-mediatek@lists.infradead.org; Wed, 05 Oct 2016 12:12:47 +0000 Received: from mtkhts07.mediatek.inc [(172.21.101.69)] by mailgw02.mediatek.com (envelope-from ) (mhqrelay.mediatek.com ESMTP with TLS) with ESMTP id 98806787; Wed, 05 Oct 2016 20:12:15 +0800 Received: from mtkslt203.mediatek.inc (10.21.15.19) by mtkhts07.mediatek.inc (172.21.101.73) with Microsoft SMTP Server id 14.3.266.1; Wed, 5 Oct 2016 20:12:13 +0800 From: Nelson Chang To: , Subject: [PATCH net-next v2 1/3] net: ethernet: mediatek: get the chip id by ETHDMASYS registers Date: Wed, 5 Oct 2016 20:12:10 +0800 Message-ID: <1475669532-23894-2-git-send-email-nelson.chang@mediatek.com> X-Mailer: git-send-email 1.9.1 In-Reply-To: <1475669532-23894-1-git-send-email-nelson.chang@mediatek.com> References: <1475669532-23894-1-git-send-email-nelson.chang@mediatek.com> MIME-Version: 1.0 X-MTK: N X-CRM114-Version: 20100106-BlameMichelson ( TRE 0.8.0 (BSD) ) MR-646709E3 X-CRM114-CacheID: sfid-20161005_051241_724259_DB574D23 X-CRM114-Status: GOOD ( 13.06 ) X-BeenThere: linux-mediatek@lists.infradead.org X-Mailman-Version: 2.1.20 Precedence: list List-Id: List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Cc: netdev@vger.kernel.org, nbd@openwrt.org, linux-mediatek@lists.infradead.org, nelsonch.tw@gmail.com, Nelson Chang Sender: "Linux-mediatek" Errors-To: linux-mediatek-bounces+patchwork-linux-mediatek=patchwork.kernel.org@lists.infradead.org X-Virus-Scanned: ClamAV using ClamSMTP The driver gets the chip id by ETHSYS_CHIPID0_3/ETHSYS_CHIPID4_7 registers in mtk_probe(). Signed-off-by: Nelson Chang --- drivers/net/ethernet/mediatek/mtk_eth_soc.c | 29 +++++++++++++++++++++++++++++ drivers/net/ethernet/mediatek/mtk_eth_soc.h | 5 +++++ 2 files changed, 34 insertions(+) diff --git a/drivers/net/ethernet/mediatek/mtk_eth_soc.c b/drivers/net/ethernet/mediatek/mtk_eth_soc.c index ad4ab97..0c67ab1 100644 --- a/drivers/net/ethernet/mediatek/mtk_eth_soc.c +++ b/drivers/net/ethernet/mediatek/mtk_eth_soc.c @@ -2323,6 +2323,31 @@ free_netdev: return err; } +static int mtk_get_chip_id(struct mtk_eth *eth, u32 *chip_id) +{ + u32 val[2], id[4]; + + regmap_read(eth->ethsys, ETHSYS_CHIPID0_3, &val[0]); + regmap_read(eth->ethsys, ETHSYS_CHIPID4_7, &val[1]); + + id[3] = ((val[0] >> 16) & 0xff) - '0'; + id[2] = ((val[0] >> 24) & 0xff) - '0'; + id[1] = (val[1] & 0xff) - '0'; + id[0] = ((val[1] >> 8) & 0xff) - '0'; + + *chip_id = (id[3] * 1000) + (id[2] * 100) + + (id[1] * 10) + id[0]; + + if (!(*chip_id)) { + dev_err(eth->dev, "failed to get chip id\n"); + return -ENODEV; + } + + dev_info(eth->dev, "chip id = %d\n", *chip_id); + + return 0; +} + static int mtk_probe(struct platform_device *pdev) { struct resource *res = platform_get_resource(pdev, IORESOURCE_MEM, 0); @@ -2388,6 +2413,10 @@ static int mtk_probe(struct platform_device *pdev) if (err) return err; + err = mtk_get_chip_id(eth, ð->chip_id); + if (err) + return err; + for_each_child_of_node(pdev->dev.of_node, mac_np) { if (!of_device_is_compatible(mac_np, "mediatek,eth-mac")) diff --git a/drivers/net/ethernet/mediatek/mtk_eth_soc.h b/drivers/net/ethernet/mediatek/mtk_eth_soc.h index 3003195..a5b422b 100644 --- a/drivers/net/ethernet/mediatek/mtk_eth_soc.h +++ b/drivers/net/ethernet/mediatek/mtk_eth_soc.h @@ -342,6 +342,10 @@ #define GPIO_BIAS_CTRL 0xed0 #define GPIO_DRV_SEL10 0xf00 +/* ethernet subsystem chip id register */ +#define ETHSYS_CHIPID0_3 0x0 +#define ETHSYS_CHIPID4_7 0x4 + /* ethernet subsystem config register */ #define ETHSYS_SYSCFG0 0x14 #define SYSCFG0_GE_MASK 0x3 @@ -534,6 +538,7 @@ struct mtk_eth { unsigned long sysclk; struct regmap *ethsys; struct regmap *pctl; + u32 chip_id; bool hwlro; atomic_t dma_refcnt; struct mtk_tx_ring tx_ring;