From patchwork Thu Dec 23 00:22:23 2021 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Florian Fainelli X-Patchwork-Id: 527996 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 4EAE9C433EF for ; Thu, 23 Dec 2021 00:22:51 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1345574AbhLWAWt (ORCPT ); Wed, 22 Dec 2021 19:22:49 -0500 Received: from lindbergh.monkeyblade.net ([23.128.96.19]:55240 "EHLO lindbergh.monkeyblade.net" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1345495AbhLWAWo (ORCPT ); Wed, 22 Dec 2021 19:22:44 -0500 Received: from mail-pl1-x636.google.com (mail-pl1-x636.google.com [IPv6:2607:f8b0:4864:20::636]) by lindbergh.monkeyblade.net (Postfix) with ESMTPS id 5AFB7C061748; Wed, 22 Dec 2021 16:22:44 -0800 (PST) Received: by mail-pl1-x636.google.com with SMTP id x15so3055106plg.1; Wed, 22 Dec 2021 16:22:44 -0800 (PST) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=gmail.com; s=20210112; h=from:to:cc:subject:date:message-id:in-reply-to:references :mime-version:content-transfer-encoding; bh=ooOQpqGI8yqwBdhnAO1DTOd+XDWRopDBw4/NhIv0RTg=; b=Caau2MVJF8vOqLzcwoVJXvMhtrKVgzUKS7PfAM0T86L5n6vh3B5MtIy4/0vpJflYMk 8o8O97LLzApN2bfBSOuJpaMQQxa1GFs31k74LvcYSDIkjAbezmh99XHexENvLCNprvrG qoo/VAhQuqVPEUfszUKj4xDs+Nk/cJ82RVgF20dS8FT5kSs/ayOMxIe2FDgK4ShFRzJ5 QQ5YVpQmoMoZoQhiFYsRUpTvsVshweqH6AfWc64S4kEYgoriaWvJHsKqPoad/us8KpwT gGTpy8Musa+aPKHIeRnKTOeLEaVgYR0UYiN+Rsj1CTbWmsZqk+wE64BBS5Au920rBMyL a74g== X-Google-DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=1e100.net; s=20210112; h=x-gm-message-state:from:to:cc:subject:date:message-id:in-reply-to :references:mime-version:content-transfer-encoding; bh=ooOQpqGI8yqwBdhnAO1DTOd+XDWRopDBw4/NhIv0RTg=; b=462VMHyHrsXxJtjU4BLY5mjr7rRX8TnFvP2s4lDfkPJCNe1tHcpLgr60JM07mffnpT Lgy2ngHAtZpmFORa2pZeJqEW1Gth9r69Kgq/d9tELZoriCD+psnAO+M1EuYVSpQcMKqX iwiNJFKzEpyqj+mE9NdCc+8DmiD37BxH9zDHvWMjft7WlC63y+WVf/YmEzMWSfIKy1fK T5nzpTZ7XJYgL1sFM9sKHYbE/orE0ZW9GphgD+qoXFiol+kQu+x66bhnUjoAq+fxoz6Y dznF+ZFkUt1M96QApAWZF6GKUDRy1Okx9wByCBzjTN7pWs69daO1LTWBf69+UIF+mINT 892w== X-Gm-Message-State: AOAM530b/i1ESW5saPggs6/aPhlgrRm41e/Cmf6N8vutTNR4qEgePdGO 0WpAA6Mu3NDGt2WCqx2YV9M= X-Google-Smtp-Source: ABdhPJxa7BlJTDNL5Bl9zH3S6qNvt+nePjZ4VIg972BHLrDi/rIXlBQtfu1Tm6HFn1XrrNRYwtePuw== X-Received: by 2002:a17:90a:6b44:: with SMTP id x4mr49967pjl.27.1640218963819; Wed, 22 Dec 2021 16:22:43 -0800 (PST) Received: from fainelli-desktop.igp.broadcom.net ([192.19.223.252]) by smtp.gmail.com with ESMTPSA id e24sm6720703pjt.45.2021.12.22.16.22.42 (version=TLS1_3 cipher=TLS_AES_256_GCM_SHA384 bits=256/256); Wed, 22 Dec 2021 16:22:43 -0800 (PST) From: Florian Fainelli To: linux-mtd@lists.infradead.org Cc: Florian Fainelli , =?utf-8?b?UmFmYcWCIE1pxYJlY2tp?= , Miquel Raynal , Richard Weinberger , Vignesh Raghavendra , Brian Norris , Kamal Dasu , Arnd Bergmann , Cai Huoqing , Colin Ian King , linux-kernel@vger.kernel.org (open list), linux-wireless@vger.kernel.org (open list:BROADCOM SPECIFIC AMBA DRIVER (BCMA)), bcm-kernel-feedback-list@broadcom.com (open list:BROADCOM STB NAND FLASH DRIVER) Subject: [PATCH 7/9] mtd: rawnand: brcmnand: Allow platform data instantation Date: Wed, 22 Dec 2021 16:22:23 -0800 Message-Id: <20211223002225.3738385-8-f.fainelli@gmail.com> X-Mailer: git-send-email 2.25.1 In-Reply-To: <20211223002225.3738385-1-f.fainelli@gmail.com> References: <20211223002225.3738385-1-f.fainelli@gmail.com> MIME-Version: 1.0 Precedence: bulk List-ID: X-Mailing-List: linux-wireless@vger.kernel.org Make use of the recently refactored code in brcmnand_init_cs() and derive the chip-select from the platform data that is supplied. Update the various code paths to avoid relying on possibly non-existent resources, too. Signed-off-by: Florian Fainelli --- drivers/mtd/nand/raw/brcmnand/brcmnand.c | 45 ++++++++++++++++++------ 1 file changed, 35 insertions(+), 10 deletions(-) diff --git a/drivers/mtd/nand/raw/brcmnand/brcmnand.c b/drivers/mtd/nand/raw/brcmnand/brcmnand.c index e7947cff4dd1..2f2aaa554282 100644 --- a/drivers/mtd/nand/raw/brcmnand/brcmnand.c +++ b/drivers/mtd/nand/raw/brcmnand/brcmnand.c @@ -9,6 +9,7 @@ #include #include #include +#include #include #include #include @@ -2760,7 +2761,8 @@ static const struct nand_controller_ops brcmnand_controller_ops = { .attach_chip = brcmnand_attach_chip, }; -static int brcmnand_init_cs(struct brcmnand_host *host) +static int brcmnand_init_cs(struct brcmnand_host *host, + const char * const *part_probe_types) { struct brcmnand_controller *ctrl = host->ctrl; struct device *dev = ctrl->dev; @@ -2813,7 +2815,7 @@ static int brcmnand_init_cs(struct brcmnand_host *host) if (ret) return ret; - ret = mtd_device_register(mtd, NULL, 0); + ret = mtd_device_parse_register(mtd, part_probe_types, NULL, NULL, 0); if (ret) nand_cleanup(chip); @@ -2982,17 +2984,15 @@ static int brcmnand_edu_setup(struct platform_device *pdev) int brcmnand_probe(struct platform_device *pdev, struct brcmnand_soc *soc) { + struct brcmnand_platform_data *pd = dev_get_platdata(&pdev->dev); struct device *dev = &pdev->dev; struct device_node *dn = dev->of_node, *child; struct brcmnand_controller *ctrl; + struct brcmnand_host *host; struct resource *res; int ret; - /* We only support device-tree instantiation */ - if (!dn) - return -ENODEV; - - if (!of_match_node(brcmnand_of_match, dn)) + if (dn && !of_match_node(brcmnand_of_match, dn)) return -ENODEV; ctrl = devm_kzalloc(dev, sizeof(*ctrl), GFP_KERNEL); @@ -3013,7 +3013,7 @@ int brcmnand_probe(struct platform_device *pdev, struct brcmnand_soc *soc) /* NAND register range */ res = platform_get_resource(pdev, IORESOURCE_MEM, 0); ctrl->nand_base = devm_ioremap_resource(dev, res); - if (IS_ERR(ctrl->nand_base)) + if (IS_ERR(ctrl->nand_base) && !brcmnand_soc_has_ops(soc)) return PTR_ERR(ctrl->nand_base); /* Enable clock before using NAND registers */ @@ -3157,7 +3157,6 @@ int brcmnand_probe(struct platform_device *pdev, struct brcmnand_soc *soc) for_each_available_child_of_node(dn, child) { if (of_device_is_compatible(child, "brcm,nandcs")) { - struct brcmnand_host *host; host = devm_kzalloc(dev, sizeof(*host), GFP_KERNEL); if (!host) { @@ -3177,7 +3176,7 @@ int brcmnand_probe(struct platform_device *pdev, struct brcmnand_soc *soc) nand_set_flash_node(&host->chip, dn); - ret = brcmnand_init_cs(host); + ret = brcmnand_init_cs(host, NULL); if (ret) { devm_kfree(dev, host); continue; /* Try all chip-selects */ @@ -3187,6 +3186,32 @@ int brcmnand_probe(struct platform_device *pdev, struct brcmnand_soc *soc) } } + if (!list_empty(&ctrl->host_list)) + return 0; + + if (!pd) { + ret = -ENODEV; + goto err; + } + + /* If we got there we must have been probing via platform data */ + host = devm_kzalloc(dev, sizeof(*host), GFP_KERNEL); + if (!host) { + ret = -ENOMEM; + goto err; + } + host->pdev = pdev; + host->ctrl = ctrl; + host->cs = pd->chip_select; + host->chip.ecc.size = pd->ecc_stepsize; + host->chip.ecc.strength = pd->ecc_strength; + + ret = brcmnand_init_cs(host, pd->part_probe_types); + if (ret) + goto err; + + list_add_tail(&host->node, &ctrl->host_list); + /* No chip-selects could initialize properly */ if (list_empty(&ctrl->host_list)) { ret = -ENODEV;