From patchwork Sat Apr 4 19:29:05 2020 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Sumit Gupta X-Patchwork-Id: 1266441 Return-Path: X-Original-To: incoming@patchwork.ozlabs.org Delivered-To: patchwork-incoming@bilbo.ozlabs.org Authentication-Results: ozlabs.org; spf=none (no SPF record) smtp.mailfrom=vger.kernel.org (client-ip=209.132.180.67; helo=vger.kernel.org; envelope-from=linux-tegra-owner@vger.kernel.org; receiver=) Authentication-Results: ozlabs.org; dmarc=pass (p=none dis=none) header.from=nvidia.com Authentication-Results: ozlabs.org; dkim=pass (2048-bit key; unprotected) header.d=nvidia.com header.i=@nvidia.com header.a=rsa-sha256 header.s=n1 header.b=dBeLAnAP; dkim-atps=neutral Received: from vger.kernel.org (vger.kernel.org [209.132.180.67]) by ozlabs.org (Postfix) with ESMTP id 48vn1T2VlCz9sP7 for ; Sun, 5 Apr 2020 05:29:33 +1000 (AEST) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1726312AbgDDT3c (ORCPT ); Sat, 4 Apr 2020 15:29:32 -0400 Received: from hqnvemgate24.nvidia.com ([216.228.121.143]:8269 "EHLO hqnvemgate24.nvidia.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1726258AbgDDT3c (ORCPT ); Sat, 4 Apr 2020 15:29:32 -0400 Received: from hqpgpgate101.nvidia.com (Not Verified[216.228.121.13]) by hqnvemgate24.nvidia.com (using TLS: TLSv1.2, DES-CBC3-SHA) id ; Sat, 04 Apr 2020 12:27:51 -0700 Received: from hqmail.nvidia.com ([172.20.161.6]) by hqpgpgate101.nvidia.com (PGP Universal service); Sat, 04 Apr 2020 12:29:31 -0700 X-PGP-Universal: processed; by hqpgpgate101.nvidia.com on Sat, 04 Apr 2020 12:29:31 -0700 Received: from HQMAIL109.nvidia.com (172.20.187.15) by HQMAIL105.nvidia.com (172.20.187.12) with Microsoft SMTP Server (TLS) id 15.0.1473.3; Sat, 4 Apr 2020 19:29:30 +0000 Received: from hqnvemgw03.nvidia.com (10.124.88.68) by HQMAIL109.nvidia.com (172.20.187.15) with Microsoft SMTP Server (TLS) id 15.0.1473.3 via Frontend Transport; Sat, 4 Apr 2020 19:29:30 +0000 Received: from sumitg-l4t.nvidia.com (Not Verified[10.24.37.103]) by hqnvemgw03.nvidia.com with Trustwave SEG (v7, 5, 8, 10121) id ; Sat, 04 Apr 2020 12:29:30 -0700 From: Sumit Gupta To: , , , , , , , , , , CC: , , Subject: [TEGRA194_CPUFREQ Patch v2 1/3] firmware: tegra: adding function to get BPMP data Date: Sun, 5 Apr 2020 00:59:05 +0530 Message-ID: <1586028547-14993-2-git-send-email-sumitg@nvidia.com> X-Mailer: git-send-email 2.7.4 In-Reply-To: <1586028547-14993-1-git-send-email-sumitg@nvidia.com> References: <1586028547-14993-1-git-send-email-sumitg@nvidia.com> X-NVConfidentiality: public MIME-Version: 1.0 DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=nvidia.com; s=n1; t=1586028471; bh=WtC++4Md9/b4qc1FTSjjLKQOR4hk6B0Sbkpq1iIzKm8=; h=X-PGP-Universal:From:To:CC:Subject:Date:Message-ID:X-Mailer: In-Reply-To:References:X-NVConfidentiality:MIME-Version: Content-Type; b=dBeLAnAP0rCl2OAsVQh84lzWUE3m9aOYogONUHhMVCvQY07C9ur1irlkyD5L4vrlu k4kLAkuS+BDH7ANs4tVyJbMGFerJVxZlWi6RCyGEiM28EP64t6N0Ek2gjhEVGoTXUJ 0PqsMVMp+2BLoQEAKP6hDUGaaYCshiVGT9jndzQ5SzbLKciywoDUHpbaXvXNKfw70f qwRN3lfNFCtJegu7PouuEmJmMIxf/KYyVwgjicUwst8isdY3E0OCTc+WcMkPiqGAMG kEmz57c7NSAKypukUYUckimGCOaomMtIXRmmwrV4TnSLwkJLNrEWOGzi1/4H8+zWeW vNsXv0mrUZyxQ== Sender: linux-tegra-owner@vger.kernel.org Precedence: bulk List-ID: X-Mailing-List: linux-tegra@vger.kernel.org Adding new function of_tegra_bpmp_get() to get BPMP data. This function can be used by other drivers like cpufreq to get BPMP data without adding any property in respective drivers DT node. Signed-off-by: Sumit Gupta --- drivers/firmware/tegra/bpmp.c | 38 ++++++++++++++++++++++++++++++++++++++ include/soc/tegra/bpmp.h | 5 +++++ 2 files changed, 43 insertions(+) diff --git a/drivers/firmware/tegra/bpmp.c b/drivers/firmware/tegra/bpmp.c index 6741fcd..9c3d7f1 100644 --- a/drivers/firmware/tegra/bpmp.c +++ b/drivers/firmware/tegra/bpmp.c @@ -38,6 +38,44 @@ channel_to_ops(struct tegra_bpmp_channel *channel) return bpmp->soc->ops; } +struct tegra_bpmp *of_tegra_bpmp_get(void) +{ + struct platform_device *pdev; + struct device_node *bpmp_dev; + struct tegra_bpmp *bpmp; + + /* Check for bpmp device status in DT */ + bpmp_dev = of_find_compatible_node(NULL, NULL, "nvidia,tegra186-bpmp"); + if (!bpmp_dev) { + bpmp = ERR_PTR(-ENODEV); + goto err_out; + } + if (!of_device_is_available(bpmp_dev)) { + bpmp = ERR_PTR(-ENODEV); + goto err_put; + } + + pdev = of_find_device_by_node(bpmp_dev); + if (!pdev) { + bpmp = ERR_PTR(-ENODEV); + goto err_put; + } + + bpmp = platform_get_drvdata(pdev); + if (!bpmp) { + bpmp = ERR_PTR(-EPROBE_DEFER); + put_device(&pdev->dev); + goto err_put; + } + + return bpmp; +err_put: + of_node_put(bpmp_dev); +err_out: + return bpmp; +} +EXPORT_SYMBOL_GPL(of_tegra_bpmp_get); + struct tegra_bpmp *tegra_bpmp_get(struct device *dev) { struct platform_device *pdev; diff --git a/include/soc/tegra/bpmp.h b/include/soc/tegra/bpmp.h index f2604e9..21402d9 100644 --- a/include/soc/tegra/bpmp.h +++ b/include/soc/tegra/bpmp.h @@ -107,6 +107,7 @@ struct tegra_bpmp_message { }; #if IS_ENABLED(CONFIG_TEGRA_BPMP) +struct tegra_bpmp *of_tegra_bpmp_get(void); struct tegra_bpmp *tegra_bpmp_get(struct device *dev); void tegra_bpmp_put(struct tegra_bpmp *bpmp); int tegra_bpmp_transfer_atomic(struct tegra_bpmp *bpmp, @@ -122,6 +123,10 @@ void tegra_bpmp_free_mrq(struct tegra_bpmp *bpmp, unsigned int mrq, void *data); bool tegra_bpmp_mrq_is_supported(struct tegra_bpmp *bpmp, unsigned int mrq); #else +static inline struct tegra_bpmp *of_tegra_bpmp_get(void) +{ + return ERR_PTR(-ENOTSUPP); +} static inline struct tegra_bpmp *tegra_bpmp_get(struct device *dev) { return ERR_PTR(-ENOTSUPP);