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,SPF_PASS, T_DKIM_INVALID,URIBL_BLOCKED autolearn=ham autolearn_force=no version=3.4.0 Received: from mail.kernel.org (mail.kernel.org [198.145.29.99]) by smtp.lore.kernel.org (Postfix) with ESMTP id 2FC5CC433EF for ; Tue, 19 Jun 2018 13:14:31 +0000 (UTC) Received: from vger.kernel.org (vger.kernel.org [209.132.180.67]) by mail.kernel.org (Postfix) with ESMTP id DB60120874 for ; Tue, 19 Jun 2018 13:14:30 +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="Eif0YEjl"; dkim=fail reason="key not found in DNS" (0-bit key) header.d=codeaurora.org header.i=@codeaurora.org header.b="ak6rQz2Y" DMARC-Filter: OpenDMARC Filter v1.3.2 mail.kernel.org DB60120874 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 S1757284AbeFSNO0 (ORCPT ); Tue, 19 Jun 2018 09:14:26 -0400 Received: from smtp.codeaurora.org ([198.145.29.96]:34378 "EHLO smtp.codeaurora.org" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S937946AbeFSNMK (ORCPT ); Tue, 19 Jun 2018 09:12:10 -0400 Received: by smtp.codeaurora.org (Postfix, from userid 1000) id 4E64760B13; Tue, 19 Jun 2018 13:12:10 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=codeaurora.org; s=default; t=1529413930; bh=f0tSnIOxJW/SIc06df8i3q4z0U/ZhG9/CTPXMfX6afc=; h=From:To:Cc:Subject:Date:In-Reply-To:References:From; b=Eif0YEjlItqnJXvWU4BBx68vXhOMcXhFZLfTlGXgyAIpErPD/0fk1zoFnHf/U1qua SD3WLJgwQDYVLCqxjW8YJV+WIBzEsx1H9CWcw868tKRdDx5KTR+ti2cPzdcoqavmBe mr8hsZrGFeSHfrZZxxm1NQJ9HNMKvA6s1Zau/znk= 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 EB365607EB; Tue, 19 Jun 2018 13:12:05 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=codeaurora.org; s=default; t=1529413929; bh=f0tSnIOxJW/SIc06df8i3q4z0U/ZhG9/CTPXMfX6afc=; h=From:To:Cc:Subject:Date:In-Reply-To:References:From; b=ak6rQz2Y8W5mohTgoVZznxNUbpAXy0t5YbJ1FkoGIzUo2EXcQdUj52talCfPdYrIZ H8DJm7s9ONLgY6gKya8X8yrEElwEAhq8NzD6j4PSlyNMb9dSMU1yqd9AO+gdx/eRih +Y0bbpHkq1ZQ3dkPaKgvdTTQgSHjmjmVrxzn+Mp4= DMARC-Filter: OpenDMARC Filter v1.3.2 smtp.codeaurora.org EB365607EB 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 v12 06/10] drivers: qcom: rpmh-rsc: allow invalidation of sleep/wake TCS Date: Tue, 19 Jun 2018 18:41:29 +0530 Message-Id: <1529413893-5520-7-git-send-email-rplsssn@codeaurora.org> X-Mailer: git-send-email 1.9.1 In-Reply-To: <1529413893-5520-1-git-send-email-rplsssn@codeaurora.org> References: <1529413893-5520-1-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 604ebb6..fed8459 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