From patchwork Tue May 12 17:42:11 2020 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Bhaumik Bhatt X-Patchwork-Id: 11543665 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 0D59615AB for ; Tue, 12 May 2020 17:42:27 +0000 (UTC) Received: from vger.kernel.org (vger.kernel.org [23.128.96.18]) by mail.kernel.org (Postfix) with ESMTP id E948B206B9 for ; Tue, 12 May 2020 17:42:26 +0000 (UTC) Authentication-Results: mail.kernel.org; dkim=fail reason="signature verification failed" (1024-bit key) header.d=mg.codeaurora.org header.i=@mg.codeaurora.org header.b="pwIxwaSq" Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1730287AbgELRm0 (ORCPT ); Tue, 12 May 2020 13:42:26 -0400 Received: from mail26.static.mailgun.info ([104.130.122.26]:43493 "EHLO mail26.static.mailgun.info" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1730201AbgELRmZ (ORCPT ); Tue, 12 May 2020 13:42:25 -0400 DKIM-Signature: a=rsa-sha256; v=1; c=relaxed/relaxed; d=mg.codeaurora.org; q=dns/txt; s=smtp; t=1589305345; h=References: In-Reply-To: Message-Id: Date: Subject: Cc: To: From: Sender; bh=pBuTcqNKTPCo/Jfx1CZ1DBivyl6rTguL5IkTaBeu1U8=; b=pwIxwaSqFKyak4ux60+EjU6gXVmJVGJT+jMGgAO+C49Q/tuAYCimAEoqOekULmMVmc4nee22 j/6Qp349xU6G53mhHYNNdN4YVjP+TNwxYbZxvVFZpAQ5T4wQvz46OjfVLDTXMJfOlikWrPnY VuSZbXrEa7ViRC0LsNHkGyePSZw= X-Mailgun-Sending-Ip: 104.130.122.26 X-Mailgun-Sid: WyI1MzIzYiIsICJsaW51eC1hcm0tbXNtQHZnZXIua2VybmVsLm9yZyIsICJiZTllNGEiXQ== Received: from smtp.codeaurora.org (ec2-35-166-182-171.us-west-2.compute.amazonaws.com [35.166.182.171]) by mxa.mailgun.org with ESMTP id 5ebadfff.7f505697e768-smtp-out-n05; Tue, 12 May 2020 17:42:23 -0000 (UTC) Received: by smtp.codeaurora.org (Postfix, from userid 1001) id 6CBABC44795; Tue, 12 May 2020 17:42:22 +0000 (UTC) X-Spam-Checker-Version: SpamAssassin 3.4.0 (2014-02-07) on aws-us-west-2-caf-mail-1.web.codeaurora.org X-Spam-Level: X-Spam-Status: No, score=-1.0 required=2.0 tests=ALL_TRUSTED,SPF_NONE autolearn=unavailable autolearn_force=no version=3.4.0 Received: from bbhatt-linux.qualcomm.com (i-global254.qualcomm.com [199.106.103.254]) (using TLSv1.2 with cipher ECDHE-RSA-AES128-SHA256 (128/128 bits)) (No client certificate requested) (Authenticated sender: bbhatt) by smtp.codeaurora.org (Postfix) with ESMTPSA id 60E56C44788; Tue, 12 May 2020 17:42:21 +0000 (UTC) DMARC-Filter: OpenDMARC Filter v1.3.2 smtp.codeaurora.org 60E56C44788 Authentication-Results: aws-us-west-2-caf-mail-1.web.codeaurora.org; dmarc=none (p=none dis=none) header.from=codeaurora.org Authentication-Results: aws-us-west-2-caf-mail-1.web.codeaurora.org; spf=none smtp.mailfrom=bbhatt@codeaurora.org From: Bhaumik Bhatt To: manivannan.sadhasivam@linaro.org Cc: linux-arm-msm@vger.kernel.org, linux-kernel@vger.kernel.org, hemantk@codeaurora.org, jhugo@codeaurora.org, Bhaumik Bhatt Subject: [PATCH v2 3/6] bus: mhi: core: Introduce helper function to check device state Date: Tue, 12 May 2020 10:42:11 -0700 Message-Id: <1589305334-19466-4-git-send-email-bbhatt@codeaurora.org> X-Mailer: git-send-email 1.9.1 In-Reply-To: <1589305334-19466-1-git-send-email-bbhatt@codeaurora.org> References: <1589305334-19466-1-git-send-email-bbhatt@codeaurora.org> Sender: linux-arm-msm-owner@vger.kernel.org Precedence: bulk List-ID: X-Mailing-List: linux-arm-msm@vger.kernel.org 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 in reading debugfs entries. Signed-off-by: Bhaumik Bhatt Reviewed-by: Jeffrey Hugo --- 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 b1f640b..2f18be7 100644 --- a/drivers/bus/mhi/core/internal.h +++ b/drivers/bus/mhi/core/internal.h @@ -599,6 +599,11 @@ int mhi_queue_state_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); +} /* Register access methods */ void mhi_db_brstmode(struct mhi_controller *mhi_cntrl, struct db_cfg *db_cfg,