From patchwork Mon Oct 3 07:18:49 2016 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Nelson Chang X-Patchwork-Id: 677622 X-Patchwork-Delegate: davem@davemloft.net Return-Path: X-Original-To: patchwork-incoming@ozlabs.org Delivered-To: patchwork-incoming@ozlabs.org Received: from vger.kernel.org (vger.kernel.org [209.132.180.67]) by ozlabs.org (Postfix) with ESMTP id 3snYM850Fyz9ryr for ; Mon, 3 Oct 2016 18:19:16 +1100 (AEDT) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1752470AbcJCHTM (ORCPT ); Mon, 3 Oct 2016 03:19:12 -0400 Received: from mailgw01.mediatek.com ([210.61.82.183]:16326 "EHLO mailgw01.mediatek.com" rhost-flags-OK-FAIL-OK-FAIL) by vger.kernel.org with ESMTP id S1752362AbcJCHTE (ORCPT ); Mon, 3 Oct 2016 03:19:04 -0400 Received: from mtkhts07.mediatek.inc [(172.21.101.69)] by mailgw01.mediatek.com (envelope-from ) (mhqrelay.mediatek.com ESMTP with TLS) with ESMTP id 1452107485; Mon, 03 Oct 2016 15:18:56 +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; Mon, 3 Oct 2016 15:18:54 +0800 From: Nelson Chang To: , CC: , , , , Nelson Chang Subject: [PATCH net-next 1/3] net: ethernet: mediatek: get the chip id by ETHDMASYS registers Date: Mon, 3 Oct 2016 15:18:49 +0800 Message-ID: <1475479131-19822-2-git-send-email-nelson.chang@mediatek.com> X-Mailer: git-send-email 1.9.1 In-Reply-To: <1475479131-19822-1-git-send-email-nelson.chang@mediatek.com> References: <1475479131-19822-1-git-send-email-nelson.chang@mediatek.com> MIME-Version: 1.0 X-MTK: N Sender: netdev-owner@vger.kernel.org Precedence: bulk List-ID: X-Mailing-List: netdev@vger.kernel.org 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 | 27 +++++++++++++++++++++++++++ drivers/net/ethernet/mediatek/mtk_eth_soc.h | 5 +++++ 2 files changed, 32 insertions(+) diff --git a/drivers/net/ethernet/mediatek/mtk_eth_soc.c b/drivers/net/ethernet/mediatek/mtk_eth_soc.c index ad4ab97..a3e4ae6 100644 --- a/drivers/net/ethernet/mediatek/mtk_eth_soc.c +++ b/drivers/net/ethernet/mediatek/mtk_eth_soc.c @@ -2323,6 +2323,27 @@ free_netdev: return err; } +static u32 mtk_get_chip_id(struct mtk_eth *eth) +{ + u32 val[2], id[4]; + u32 chip_id; + + 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]; + + dev_info(eth->dev, "chip id = %d\n", chip_id); + + return chip_id; +} + static int mtk_probe(struct platform_device *pdev) { struct resource *res = platform_get_resource(pdev, IORESOURCE_MEM, 0); @@ -2388,6 +2409,12 @@ static int mtk_probe(struct platform_device *pdev) if (err) return err; + eth->chip_id = mtk_get_chip_id(eth); + if (!eth->chip_id) { + dev_err(&pdev->dev, "failed to get chip id\n"); + return -ENODEV; + } + 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;