From patchwork Mon Sep 28 04:09:37 2020 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Manivannan Sadhasivam X-Patchwork-Id: 11802801 Return-Path: Received: from mail.kernel.org (pdx-korg-mail-1.web.codeaurora.org [172.30.200.123]) by pdx-korg-patchwork-2.web.codeaurora.org (Postfix) with ESMTP id 92E17139A for ; Mon, 28 Sep 2020 04:11:01 +0000 (UTC) Received: from vger.kernel.org (vger.kernel.org [23.128.96.18]) by mail.kernel.org (Postfix) with ESMTP id 7864D239E5 for ; Mon, 28 Sep 2020 04:11:01 +0000 (UTC) Authentication-Results: mail.kernel.org; dkim=pass (2048-bit key) header.d=linaro.org header.i=@linaro.org header.b="QgP6YMRe" Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1726645AbgI1ELA (ORCPT ); Mon, 28 Sep 2020 00:11:00 -0400 Received: from lindbergh.monkeyblade.net ([23.128.96.19]:57452 "EHLO lindbergh.monkeyblade.net" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1726603AbgI1EK7 (ORCPT ); Mon, 28 Sep 2020 00:10:59 -0400 Received: from mail-pg1-x542.google.com (mail-pg1-x542.google.com [IPv6:2607:f8b0:4864:20::542]) by lindbergh.monkeyblade.net (Postfix) with ESMTPS id 93C07C0613CE for ; Sun, 27 Sep 2020 21:10:59 -0700 (PDT) Received: by mail-pg1-x542.google.com with SMTP id y14so7131143pgf.12 for ; Sun, 27 Sep 2020 21:10:59 -0700 (PDT) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=linaro.org; s=google; h=from:to:cc:subject:date:message-id:in-reply-to:references; bh=SCbfk5KhIaeQlvR4Cwr7GsH4vv2lp3s8XkSFmUeV6ps=; b=QgP6YMRe9W0moxUsSUcMTvkEySzzxbKPx4352s7GySLUMaQ3C2PecB4QuBMTKWZtxe eO4I2+/C0Z3OkOCRkeOv2sifn+et6uZmNBRPT6+GMJJLep26Fl/32aqUJi/PtXoE3ejO taAbWm9Y4EW9SWYIFCFiVkgcwifnvjWvvbbYG68nd+zmbFVmWIcrh1Ia9q3CMEv1tUie sCd9PQn2CQsWsgwVzxrzvXtgVWUsoB8vSOmn3adjPzc1f9CV3pRbNvk1UPjhJruR+DGy 4n23/rHhuiHsNrl7DpFRgg73FqYQDq6TBDS1oa78SZEWTw5sBttKnPc/xjlANYOAEFUe tTQQ== X-Google-DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=1e100.net; s=20161025; h=x-gm-message-state:from:to:cc:subject:date:message-id:in-reply-to :references; bh=SCbfk5KhIaeQlvR4Cwr7GsH4vv2lp3s8XkSFmUeV6ps=; b=sgiqoDCFJobWInqlT5/NxvwMbS3JCD68c5jE4CJmxhocZx3Du7dmMF9Bzlcxx/0uP4 veGuF6bRnTyXBrlE7RWN9NtV4s+XBJlpZQ+7GNRGkfrNYEzMElTqUVuk1FuRqNI706Ye UyZManyfl7t0kEccHxR9ZYI5toj3ggGe4hb10f/6OXe59U6bvi2Y9xSbt1SfA3dC6IF/ 96oulsSfq8v7Amm8U2ZbPNVyZfN5GIbnhDXoIVIwpaGH1IRBJTTDD+LawtoNJ8hktvTh 9qWJpWqk4FKDraIsAjd085mqvmi9vd6wdV8vgP4rrrS39RR6UagU5VpqW0E72B/au4dt IJyA== X-Gm-Message-State: AOAM530KK8YrYaQrXD+ZEpLjsukDPvM93RD/fcU/exDSRLXbULcJZqQP FsSxbhjjRZi9eczgC+D8iulU X-Google-Smtp-Source: ABdhPJwThe1gR/zeva+rBcg5zMxyuxLMlqYqCgfXcaiOxVpKx8M3wuVH8pPKNRFbnDqh0ILT8usJJg== X-Received: by 2002:a17:902:6803:b029:d2:42a6:312 with SMTP id h3-20020a1709026803b02900d242a60312mr9590562plk.24.1601266259136; Sun, 27 Sep 2020 21:10:59 -0700 (PDT) Received: from Mani-XPS-13-9360.localdomain ([2409:4072:6003:40df:7c40:5a87:eb86:87b0]) by smtp.gmail.com with ESMTPSA id n21sm8306322pgl.7.2020.09.27.21.10.55 (version=TLS1_3 cipher=TLS_AES_256_GCM_SHA384 bits=256/256); Sun, 27 Sep 2020 21:10:58 -0700 (PDT) From: Manivannan Sadhasivam To: gregkh@linuxfoundation.org Cc: hemantk@codeaurora.org, bbhatt@codeaurora.org, linux-arm-msm@vger.kernel.org, jhugo@codeaurora.org, linux-kernel@vger.kernel.org, Manivannan Sadhasivam Subject: [PATCH v2 07/21] bus: mhi: core: Introduce helper function to check device state Date: Mon, 28 Sep 2020 09:39:37 +0530 Message-Id: <20200928040951.18207-8-manivannan.sadhasivam@linaro.org> X-Mailer: git-send-email 2.17.1 In-Reply-To: <20200928040951.18207-1-manivannan.sadhasivam@linaro.org> References: <20200928040951.18207-1-manivannan.sadhasivam@linaro.org> Precedence: bulk List-ID: X-Mailing-List: linux-arm-msm@vger.kernel.org From: Bhaumik Bhatt Introduce a helper function to determine whether the device is in a powered ON state and resides in one of the active MHI states. This will allow for some use cases where access can be pre-determined. Signed-off-by: Bhaumik Bhatt Reviewed-by: Jeffrey Hugo Reviewed-by: Manivannan Sadhasivam Signed-off-by: Manivannan Sadhasivam --- drivers/bus/mhi/core/internal.h | 5 +++++ 1 file changed, 5 insertions(+) diff --git a/drivers/bus/mhi/core/internal.h b/drivers/bus/mhi/core/internal.h index 1bbd6e99d38d..5a81a428c4aa 100644 --- a/drivers/bus/mhi/core/internal.h +++ b/drivers/bus/mhi/core/internal.h @@ -598,6 +598,11 @@ int mhi_pm_m3_transition(struct mhi_controller *mhi_cntrl); int __mhi_device_get_sync(struct mhi_controller *mhi_cntrl); int mhi_send_cmd(struct mhi_controller *mhi_cntrl, struct mhi_chan *mhi_chan, enum mhi_cmd_type cmd); +static inline bool mhi_is_active(struct mhi_controller *mhi_cntrl) +{ + return (mhi_cntrl->dev_state >= MHI_STATE_M0 && + mhi_cntrl->dev_state <= MHI_STATE_M3_FAST); +} static inline void mhi_trigger_resume(struct mhi_controller *mhi_cntrl) {