From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: X-Spam-Checker-Version: SpamAssassin 3.4.0 (2014-02-07) on aws-us-west-2-korg-lkml-1.web.codeaurora.org X-Spam-Level: X-Spam-Status: No, score=-0.1 required=3.0 tests=DKIM_SIGNED, FROM_LOCAL_NOVOWEL,HEADER_FROM_DIFFERENT_DOMAINS,MAILING_LIST_MULTI, T_DKIM_INVALID,URIBL_BLOCKED autolearn=unavailable autolearn_force=no version=3.4.0 Received: from mail.kernel.org (pdx-korg-mail-1.web.codeaurora.org [172.30.200.123]) by aws-us-west-2-korg-lkml-1.web.codeaurora.org (Postfix) with ESMTP id 90D06C004EF for ; Mon, 11 Jun 2018 17:26:59 +0000 (UTC) Received: from vger.kernel.org (vger.kernel.org [209.132.180.67]) by mail.kernel.org (Postfix) with ESMTP id 45BE020660 for ; Mon, 11 Jun 2018 17:26:59 +0000 (UTC) Authentication-Results: mail.kernel.org; dkim=fail reason="key not found in DNS" (0-bit key) header.d=codeaurora.org header.i=@codeaurora.org header.b="hz7bJKgE"; dkim=fail reason="key not found in DNS" (0-bit key) header.d=codeaurora.org header.i=@codeaurora.org header.b="hz7bJKgE" DMARC-Filter: OpenDMARC Filter v1.3.2 mail.kernel.org 45BE020660 Authentication-Results: mail.kernel.org; dmarc=none (p=none dis=none) header.from=codeaurora.org Authentication-Results: mail.kernel.org; spf=none smtp.mailfrom=linux-kernel-owner@vger.kernel.org Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S934292AbeFKR04 (ORCPT ); Mon, 11 Jun 2018 13:26:56 -0400 Received: from smtp.codeaurora.org ([198.145.29.96]:52634 "EHLO smtp.codeaurora.org" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S934241AbeFKR0x (ORCPT ); Mon, 11 Jun 2018 13:26:53 -0400 Received: by smtp.codeaurora.org (Postfix, from userid 1000) id D3438608CD; Mon, 11 Jun 2018 17:26:52 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=codeaurora.org; s=default; t=1528738012; bh=pLOwIBxDTltsSVQbBtdC0E8Hyq6eVarFPLCIbhHn1/A=; h=From:To:Cc:Subject:Date:In-Reply-To:References:From; b=hz7bJKgENGTKFi9iEvC+Rk6a7Tf/jd6Zu8pJqFRMqm4RumnWXMkiWWY89cX52DBnT fU8Q5GSD66iePpXEtHS3P7rRWaT04Z7wVD8GlPoA/+bVvXs4Xv15EGk0KQKByBG1Vb EncL127T058gNn7wI7V8Im4MfNKxoPddPz3He2CI= Received: from rplsssn-linux.qualcomm.com (blr-c-bdr-fw-01_globalnat_allzones-outside.qualcomm.com [103.229.19.19]) (using TLSv1.2 with cipher ECDHE-RSA-AES128-SHA256 (128/128 bits)) (No client certificate requested) (Authenticated sender: rplsssn@smtp.codeaurora.org) by smtp.codeaurora.org (Postfix) with ESMTPSA id 13D15608B8; Mon, 11 Jun 2018 17:26:48 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=codeaurora.org; s=default; t=1528738012; bh=pLOwIBxDTltsSVQbBtdC0E8Hyq6eVarFPLCIbhHn1/A=; h=From:To:Cc:Subject:Date:In-Reply-To:References:From; b=hz7bJKgENGTKFi9iEvC+Rk6a7Tf/jd6Zu8pJqFRMqm4RumnWXMkiWWY89cX52DBnT fU8Q5GSD66iePpXEtHS3P7rRWaT04Z7wVD8GlPoA/+bVvXs4Xv15EGk0KQKByBG1Vb EncL127T058gNn7wI7V8Im4MfNKxoPddPz3He2CI= DMARC-Filter: OpenDMARC Filter v1.3.2 smtp.codeaurora.org 13D15608B8 Authentication-Results: pdx-caf-mail.web.codeaurora.org; dmarc=none (p=none dis=none) header.from=codeaurora.org Authentication-Results: pdx-caf-mail.web.codeaurora.org; spf=none smtp.mailfrom=rplsssn@codeaurora.org From: Raju P L S S S N To: andy.gross@linaro.org, david.brown@linaro.org, linux-arm-msm@vger.kernel.org, linux-soc@vger.kernel.org Cc: rnayak@codeaurora.org, bjorn.andersson@linaro.org, linux-kernel@vger.kernel.org, sboyd@kernel.org, evgreen@chromium.org, dianders@chromium.org, mka@chromium.org, ilina@codeaurora.org, "Raju P.L.S.S.S.N" Subject: [PATCH v10 06/10] drivers: qcom: rpmh-rsc: allow invalidation of sleep/wake TCS Date: Mon, 11 Jun 2018 22:55:45 +0530 Message-Id: <1528737949-17495-7-git-send-email-rplsssn@codeaurora.org> X-Mailer: git-send-email 1.9.1 In-Reply-To: <1528737949-17495-1-git-send-email-rplsssn@codeaurora.org> References: <1528737949-17495-1-git-send-email-rplsssn@codeaurora.org> Sender: linux-kernel-owner@vger.kernel.org Precedence: bulk List-ID: X-Mailing-List: linux-kernel@vger.kernel.org From: Lina Iyer Allow sleep and wake commands to be cleared from the respective TCSes, so that they can be re-populated. Signed-off-by: Lina Iyer Signed-off-by: Raju P.L.S.S.S.N --- Changes in v9: - Remove EXPORT_SYMBOL Changes in v7: - Move bitmap_zero() outside the loop Changes in v6: - remove unnecessary locks around __tcs_invalidate - rename function to tcs_invaldiate Changes in v4: - refactored the rphm_rsc_invalidate() --- drivers/soc/qcom/rpmh-rsc.c | 44 ++++++++++++++++++++++++++++++++++++++++++++ 1 file changed, 44 insertions(+) diff --git a/drivers/soc/qcom/rpmh-rsc.c b/drivers/soc/qcom/rpmh-rsc.c index b87f9b0..a68dcd1 100644 --- a/drivers/soc/qcom/rpmh-rsc.c +++ b/drivers/soc/qcom/rpmh-rsc.c @@ -101,6 +101,50 @@ static struct tcs_group *get_tcs_of_type(struct rsc_drv *drv, int type) return &drv->tcs[type]; } +static int tcs_invalidate(struct rsc_drv *drv, int type) +{ + int m; + struct tcs_group *tcs; + + tcs = get_tcs_of_type(drv, type); + if (IS_ERR(tcs)) + return PTR_ERR(tcs); + + spin_lock(&tcs->lock); + if (bitmap_empty(tcs->slots, MAX_TCS_SLOTS)) { + spin_unlock(&tcs->lock); + return 0; + } + + for (m = tcs->offset; m < tcs->offset + tcs->num_tcs; m++) { + if (!tcs_is_free(drv, m)) { + spin_unlock(&tcs->lock); + return -EAGAIN; + } + write_tcs_reg_sync(drv, RSC_DRV_CMD_ENABLE, m, 0); + } + bitmap_zero(tcs->slots, MAX_TCS_SLOTS); + spin_unlock(&tcs->lock); + + return 0; +} + +/** + * rpmh_rsc_invalidate - Invalidate sleep and wake TCSes + * + * @drv: the RSC controller + */ +int rpmh_rsc_invalidate(struct rsc_drv *drv) +{ + int ret; + + ret = tcs_invalidate(drv, SLEEP_TCS); + if (!ret) + ret = tcs_invalidate(drv, WAKE_TCS); + + return ret; +} + static struct tcs_group *get_tcs_for_msg(struct rsc_drv *drv, const struct tcs_request *msg) { -- The Qualcomm Innovation Center, Inc. is a member of the Code Aurora Forum,\na Linux Foundation Collaborative Project