From patchwork Mon Jun 15 12:02:41 2020 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Rajendra Nayak X-Patchwork-Id: 11604629 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 A453414E3 for ; Mon, 15 Jun 2020 12:03:57 +0000 (UTC) Received: from gabe.freedesktop.org (gabe.freedesktop.org [131.252.210.177]) (using TLSv1.2 with cipher ECDHE-RSA-AES256-GCM-SHA384 (256/256 bits)) (No client certificate requested) by mail.kernel.org (Postfix) with ESMTPS id 8291A20738 for ; Mon, 15 Jun 2020 12:03:57 +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="lGnkyx+7" DMARC-Filter: OpenDMARC Filter v1.3.2 mail.kernel.org 8291A20738 Authentication-Results: mail.kernel.org; dmarc=none (p=none dis=none) header.from=codeaurora.org Authentication-Results: mail.kernel.org; spf=none smtp.mailfrom=dri-devel-bounces@lists.freedesktop.org Received: from gabe.freedesktop.org (localhost [127.0.0.1]) by gabe.freedesktop.org (Postfix) with ESMTP id AA8EB89DB8; Mon, 15 Jun 2020 12:03:56 +0000 (UTC) X-Original-To: dri-devel@lists.freedesktop.org Delivered-To: dri-devel@lists.freedesktop.org Received: from mail27.static.mailgun.info (mail27.static.mailgun.info [104.130.122.27]) by gabe.freedesktop.org (Postfix) with ESMTPS id 7E27789DB8 for ; Mon, 15 Jun 2020 12:03:52 +0000 (UTC) DKIM-Signature: a=rsa-sha256; v=1; c=relaxed/relaxed; d=mg.codeaurora.org; q=dns/txt; s=smtp; t=1592222635; h=References: In-Reply-To: Message-Id: Date: Subject: Cc: To: From: Sender; bh=QCrhzPNRagZPoPcvT0UlcO4juzReClh5S3OpNy2dFX8=; b=lGnkyx+7RVIubLKI6+m/UJ/NdFeo38hc7kURvRKucY27cbGAIkKwwwfJJHcZtYf5OdJBDLqn Iz1+U0RfgtXahFwPefUeN5vzxh0h3w8TAoEZnf5C33Ru6mF0/xXDUij+dkPYDI7r/TuQ6I1l EjHeoKZ4JDozHwBTvgEGxfitlpo= X-Mailgun-Sending-Ip: 104.130.122.27 X-Mailgun-Sid: WyJkOTU5ZSIsICJkcmktZGV2ZWxAbGlzdHMuZnJlZWRlc2t0b3Aub3JnIiwgImJlOWU0YSJd Received: from smtp.codeaurora.org (ec2-35-166-182-171.us-west-2.compute.amazonaws.com [35.166.182.171]) by smtp-out-n05.prod.us-east-1.postgun.com with SMTP id 5ee7638a356bcc26aba9d90e (version=TLS1.2, cipher=TLS_ECDHE_RSA_WITH_AES_128_GCM_SHA256); Mon, 15 Jun 2020 12:03:22 GMT Received: by smtp.codeaurora.org (Postfix, from userid 1001) id C7016C43391; Mon, 15 Jun 2020 12:03:21 +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 blr-ubuntu-173.qualcomm.com (blr-bdr-fw-01_GlobalNAT_AllZones-Outside.qualcomm.com [103.229.18.19]) (using TLSv1.2 with cipher ECDHE-RSA-AES128-SHA256 (128/128 bits)) (No client certificate requested) (Authenticated sender: rnayak) by smtp.codeaurora.org (Postfix) with ESMTPSA id 02551C433C8; Mon, 15 Jun 2020 12:03:16 +0000 (UTC) DMARC-Filter: OpenDMARC Filter v1.3.2 smtp.codeaurora.org 02551C433C8 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=rnayak@codeaurora.org From: Rajendra Nayak To: bjorn.andersson@linaro.org, agross@kernel.org, robdclark@gmail.com, robdclark@chromium.org, stanimir.varbanov@linaro.org Subject: [PATCH v6 3/6] drm/msm/dpu: Use OPP API to set clk/perf state Date: Mon, 15 Jun 2020 17:32:41 +0530 Message-Id: <1592222564-13556-4-git-send-email-rnayak@codeaurora.org> X-Mailer: git-send-email 2.7.4 In-Reply-To: <1592222564-13556-1-git-send-email-rnayak@codeaurora.org> References: <1592222564-13556-1-git-send-email-rnayak@codeaurora.org> X-BeenThere: dri-devel@lists.freedesktop.org X-Mailman-Version: 2.1.29 Precedence: list List-Id: Direct Rendering Infrastructure - Development List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Cc: Rajendra Nayak , sboyd@kernel.org, viresh.kumar@linaro.org, linux-kernel@vger.kernel.org, dri-devel@lists.freedesktop.org, mka@chromium.org, linux-arm-msm@vger.kernel.org, Sean Paul MIME-Version: 1.0 Errors-To: dri-devel-bounces@lists.freedesktop.org Sender: "dri-devel" On some qualcomm platforms DPU needs to express a performance state requirement on a power domain depending on the clock rates. Use OPP table from DT to register with OPP framework and use dev_pm_opp_set_rate() to set the clk/perf state. Signed-off-by: Rajendra Nayak Reviewed-by: Rob Clark Reviewed-by: Matthias Kaehlcke Cc: Rob Clark Cc: Sean Paul Cc: dri-devel@lists.freedesktop.org --- No functional change in v6, rebased over 5.8-rc1 drivers/gpu/drm/msm/disp/dpu1/dpu_core_perf.c | 3 ++- drivers/gpu/drm/msm/disp/dpu1/dpu_kms.c | 26 +++++++++++++++++++++++++- drivers/gpu/drm/msm/disp/dpu1/dpu_kms.h | 4 ++++ 3 files changed, 31 insertions(+), 2 deletions(-) diff --git a/drivers/gpu/drm/msm/disp/dpu1/dpu_core_perf.c b/drivers/gpu/drm/msm/disp/dpu1/dpu_core_perf.c index 7c230f7..b36919d 100644 --- a/drivers/gpu/drm/msm/disp/dpu1/dpu_core_perf.c +++ b/drivers/gpu/drm/msm/disp/dpu1/dpu_core_perf.c @@ -7,6 +7,7 @@ #include #include #include +#include #include #include #include @@ -218,7 +219,7 @@ static int _dpu_core_perf_set_core_clk_rate(struct dpu_kms *kms, u64 rate) rate = core_clk->max_rate; core_clk->rate = rate; - return msm_dss_clk_set_rate(core_clk, 1); + return dev_pm_opp_set_rate(&kms->pdev->dev, core_clk->rate); } static u64 _dpu_core_perf_get_core_clk_rate(struct dpu_kms *kms) diff --git a/drivers/gpu/drm/msm/disp/dpu1/dpu_kms.c b/drivers/gpu/drm/msm/disp/dpu1/dpu_kms.c index b8615d4..0bc8ec4 100644 --- a/drivers/gpu/drm/msm/disp/dpu1/dpu_kms.c +++ b/drivers/gpu/drm/msm/disp/dpu1/dpu_kms.c @@ -10,6 +10,7 @@ #include #include #include +#include #include #include @@ -1025,11 +1026,23 @@ static int dpu_bind(struct device *dev, struct device *master, void *data) if (!dpu_kms) return -ENOMEM; + dpu_kms->opp_table = dev_pm_opp_set_clkname(dev, "core"); + if (IS_ERR(dpu_kms->opp_table)) + return PTR_ERR(dpu_kms->opp_table); + /* OPP table is optional */ + ret = dev_pm_opp_of_add_table(dev); + if (!ret) { + dpu_kms->has_opp_table = true; + } else if (ret != -ENODEV) { + dev_err(dev, "invalid OPP table in device tree\n"); + return ret; + } + mp = &dpu_kms->mp; ret = msm_dss_parse_clock(pdev, mp); if (ret) { DPU_ERROR("failed to parse clocks, ret=%d\n", ret); - return ret; + goto err; } platform_set_drvdata(pdev, dpu_kms); @@ -1043,6 +1056,11 @@ static int dpu_bind(struct device *dev, struct device *master, void *data) priv->kms = &dpu_kms->base; return ret; +err: + if (dpu_kms->has_opp_table) + dev_pm_opp_of_remove_table(dev); + dev_pm_opp_put_clkname(dpu_kms->opp_table); + return ret; } static void dpu_unbind(struct device *dev, struct device *master, void *data) @@ -1057,6 +1075,10 @@ static void dpu_unbind(struct device *dev, struct device *master, void *data) if (dpu_kms->rpm_enabled) pm_runtime_disable(&pdev->dev); + + if (dpu_kms->has_opp_table) + dev_pm_opp_of_remove_table(dev); + dev_pm_opp_put_clkname(dpu_kms->opp_table); } static const struct component_ops dpu_ops = { @@ -1082,6 +1104,8 @@ static int __maybe_unused dpu_runtime_suspend(struct device *dev) struct dpu_kms *dpu_kms = platform_get_drvdata(pdev); struct dss_module_power *mp = &dpu_kms->mp; + /* Drop the performance state vote */ + dev_pm_opp_set_rate(dev, 0); rc = msm_dss_enable_clk(mp->clk_config, mp->num_clk, false); if (rc) DPU_ERROR("clock disable failed rc:%d\n", rc); diff --git a/drivers/gpu/drm/msm/disp/dpu1/dpu_kms.h b/drivers/gpu/drm/msm/disp/dpu1/dpu_kms.h index a3b122b..7400cd7 100644 --- a/drivers/gpu/drm/msm/disp/dpu1/dpu_kms.h +++ b/drivers/gpu/drm/msm/disp/dpu1/dpu_kms.h @@ -128,6 +128,10 @@ struct dpu_kms { struct platform_device *pdev; bool rpm_enabled; + + struct opp_table *opp_table; + bool has_opp_table; + struct dss_module_power mp; /* reference count bandwidth requests, so we know when we can From patchwork Mon Jun 15 12:02:42 2020 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Rajendra Nayak X-Patchwork-Id: 11604619 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 1A423912 for ; Mon, 15 Jun 2020 12:03:38 +0000 (UTC) Received: from gabe.freedesktop.org (gabe.freedesktop.org [131.252.210.177]) (using TLSv1.2 with cipher ECDHE-RSA-AES256-GCM-SHA384 (256/256 bits)) (No client certificate requested) by mail.kernel.org (Postfix) with ESMTPS id ECDCA20714 for ; Mon, 15 Jun 2020 12:03:37 +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="grw6Uq6S" DMARC-Filter: OpenDMARC Filter v1.3.2 mail.kernel.org ECDCA20714 Authentication-Results: mail.kernel.org; dmarc=none (p=none dis=none) header.from=codeaurora.org Authentication-Results: mail.kernel.org; spf=none smtp.mailfrom=dri-devel-bounces@lists.freedesktop.org Received: from gabe.freedesktop.org (localhost [127.0.0.1]) by gabe.freedesktop.org (Postfix) with ESMTP id EA89289B42; Mon, 15 Jun 2020 12:03:36 +0000 (UTC) X-Original-To: dri-devel@lists.freedesktop.org Delivered-To: dri-devel@lists.freedesktop.org Received: from mail27.static.mailgun.info (mail27.static.mailgun.info [104.130.122.27]) by gabe.freedesktop.org (Postfix) with ESMTPS id 820F289B42 for ; Mon, 15 Jun 2020 12:03:33 +0000 (UTC) DKIM-Signature: a=rsa-sha256; v=1; c=relaxed/relaxed; d=mg.codeaurora.org; q=dns/txt; s=smtp; t=1592222616; h=References: In-Reply-To: Message-Id: Date: Subject: Cc: To: From: Sender; bh=UVo+UnEE0sr7Wdv9LIEalycvzrsVjLgqym0QGpO183c=; b=grw6Uq6SebjNlJFEWXSkdUd/Jqgpy3F3aByvp0ZMkU4oalEoeOEJ5JjPy/rX4XaUhAGx21XB T9m77vwEhnu+7w9z84cZDClBVC0cZMLVFQx/rp+LxF4EstRulNFw+XehR2OfLrtMgUOSMpjO Y4OuyH+Sx1uoF1Q/KNRvC4o/OXs= X-Mailgun-Sending-Ip: 104.130.122.27 X-Mailgun-Sid: WyJkOTU5ZSIsICJkcmktZGV2ZWxAbGlzdHMuZnJlZWRlc2t0b3Aub3JnIiwgImJlOWU0YSJd Received: from smtp.codeaurora.org (ec2-35-166-182-171.us-west-2.compute.amazonaws.com [35.166.182.171]) by smtp-out-n10.prod.us-east-1.postgun.com with SMTP id 5ee7638e567385e8e7562c96 (version=TLS1.2, cipher=TLS_ECDHE_RSA_WITH_AES_128_GCM_SHA256); Mon, 15 Jun 2020 12:03:26 GMT Received: by smtp.codeaurora.org (Postfix, from userid 1001) id ED225C433C8; Mon, 15 Jun 2020 12:03:25 +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=ham autolearn_force=no version=3.4.0 Received: from blr-ubuntu-173.qualcomm.com (blr-bdr-fw-01_GlobalNAT_AllZones-Outside.qualcomm.com [103.229.18.19]) (using TLSv1.2 with cipher ECDHE-RSA-AES128-SHA256 (128/128 bits)) (No client certificate requested) (Authenticated sender: rnayak) by smtp.codeaurora.org (Postfix) with ESMTPSA id 8E33FC43387; Mon, 15 Jun 2020 12:03:21 +0000 (UTC) DMARC-Filter: OpenDMARC Filter v1.3.2 smtp.codeaurora.org 8E33FC43387 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=rnayak@codeaurora.org From: Rajendra Nayak To: bjorn.andersson@linaro.org, agross@kernel.org, robdclark@gmail.com, robdclark@chromium.org, stanimir.varbanov@linaro.org Subject: [PATCH v6 4/6] drm/msm: dsi: Use OPP API to set clk/perf state Date: Mon, 15 Jun 2020 17:32:42 +0530 Message-Id: <1592222564-13556-5-git-send-email-rnayak@codeaurora.org> X-Mailer: git-send-email 2.7.4 In-Reply-To: <1592222564-13556-1-git-send-email-rnayak@codeaurora.org> References: <1592222564-13556-1-git-send-email-rnayak@codeaurora.org> X-BeenThere: dri-devel@lists.freedesktop.org X-Mailman-Version: 2.1.29 Precedence: list List-Id: Direct Rendering Infrastructure - Development List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Cc: Rajendra Nayak , sboyd@kernel.org, viresh.kumar@linaro.org, linux-kernel@vger.kernel.org, dri-devel@lists.freedesktop.org, mka@chromium.org, linux-arm-msm@vger.kernel.org, Sean Paul MIME-Version: 1.0 Errors-To: dri-devel-bounces@lists.freedesktop.org Sender: "dri-devel" On SDM845 DSI needs to express a perforamnce state requirement on a power domain depending on the clock rates. Use OPP table from DT to register with OPP framework and use dev_pm_opp_set_rate() to set the clk/perf state. Signed-off-by: Rajendra Nayak Cc: Rob Clark Cc: Sean Paul Cc: dri-devel@lists.freedesktop.org --- No functional change in v6, rebased over 5.8-rc1 drivers/gpu/drm/msm/dsi/dsi.h | 2 ++ drivers/gpu/drm/msm/dsi/dsi_cfg.c | 4 +-- drivers/gpu/drm/msm/dsi/dsi_host.c | 58 ++++++++++++++++++++++++++++++++++++++ 3 files changed, 62 insertions(+), 2 deletions(-) diff --git a/drivers/gpu/drm/msm/dsi/dsi.h b/drivers/gpu/drm/msm/dsi/dsi.h index 4de771d..ba7583c 100644 --- a/drivers/gpu/drm/msm/dsi/dsi.h +++ b/drivers/gpu/drm/msm/dsi/dsi.h @@ -180,10 +180,12 @@ int msm_dsi_runtime_suspend(struct device *dev); int msm_dsi_runtime_resume(struct device *dev); int dsi_link_clk_set_rate_6g(struct msm_dsi_host *msm_host); int dsi_link_clk_set_rate_v2(struct msm_dsi_host *msm_host); +int dsi_link_clk_set_rate_6g_v2(struct msm_dsi_host *msm_host); int dsi_link_clk_enable_6g(struct msm_dsi_host *msm_host); int dsi_link_clk_enable_v2(struct msm_dsi_host *msm_host); void dsi_link_clk_disable_6g(struct msm_dsi_host *msm_host); void dsi_link_clk_disable_v2(struct msm_dsi_host *msm_host); +void dsi_link_clk_disable_6g_v2(struct msm_dsi_host *msm_host); int dsi_tx_buf_alloc_6g(struct msm_dsi_host *msm_host, int size); int dsi_tx_buf_alloc_v2(struct msm_dsi_host *msm_host, int size); void *dsi_tx_buf_get_6g(struct msm_dsi_host *msm_host); diff --git a/drivers/gpu/drm/msm/dsi/dsi_cfg.c b/drivers/gpu/drm/msm/dsi/dsi_cfg.c index 813d69d..773c4fe 100644 --- a/drivers/gpu/drm/msm/dsi/dsi_cfg.c +++ b/drivers/gpu/drm/msm/dsi/dsi_cfg.c @@ -210,9 +210,9 @@ static const struct msm_dsi_host_cfg_ops msm_dsi_6g_host_ops = { }; static const struct msm_dsi_host_cfg_ops msm_dsi_6g_v2_host_ops = { - .link_clk_set_rate = dsi_link_clk_set_rate_6g, + .link_clk_set_rate = dsi_link_clk_set_rate_6g_v2, .link_clk_enable = dsi_link_clk_enable_6g, - .link_clk_disable = dsi_link_clk_disable_6g, + .link_clk_disable = dsi_link_clk_disable_6g_v2, .clk_init_ver = dsi_clk_init_6g_v2, .tx_buf_alloc = dsi_tx_buf_alloc_6g, .tx_buf_get = dsi_tx_buf_get_6g, diff --git a/drivers/gpu/drm/msm/dsi/dsi_host.c b/drivers/gpu/drm/msm/dsi/dsi_host.c index 11ae5b8..890531c 100644 --- a/drivers/gpu/drm/msm/dsi/dsi_host.c +++ b/drivers/gpu/drm/msm/dsi/dsi_host.c @@ -14,6 +14,7 @@ #include #include #include +#include #include #include #include @@ -111,6 +112,9 @@ struct msm_dsi_host { struct clk *pixel_clk_src; struct clk *byte_intf_clk; + struct opp_table *opp_table; + bool has_opp_table; + u32 byte_clk_rate; u32 pixel_clk_rate; u32 esc_clk_rate; @@ -537,6 +541,38 @@ int dsi_link_clk_set_rate_6g(struct msm_dsi_host *msm_host) return 0; } +int dsi_link_clk_set_rate_6g_v2(struct msm_dsi_host *msm_host) +{ + int ret; + struct device *dev = &msm_host->pdev->dev; + + DBG("Set clk rates: pclk=%d, byteclk=%d", + msm_host->mode->clock, msm_host->byte_clk_rate); + + ret = dev_pm_opp_set_rate(dev, msm_host->byte_clk_rate); + if (ret) { + pr_err("%s: dev_pm_opp_set_rate failed %d\n", __func__, ret); + return ret; + } + + ret = clk_set_rate(msm_host->pixel_clk, msm_host->pixel_clk_rate); + if (ret) { + pr_err("%s: Failed to set rate pixel clk, %d\n", __func__, ret); + return ret; + } + + if (msm_host->byte_intf_clk) { + ret = clk_set_rate(msm_host->byte_intf_clk, + msm_host->byte_clk_rate / 2); + if (ret) { + pr_err("%s: Failed to set rate byte intf clk, %d\n", + __func__, ret); + return ret; + } + } + + return 0; +} int dsi_link_clk_enable_6g(struct msm_dsi_host *msm_host) { @@ -665,6 +701,13 @@ void dsi_link_clk_disable_6g(struct msm_dsi_host *msm_host) clk_disable_unprepare(msm_host->byte_clk); } +void dsi_link_clk_disable_6g_v2(struct msm_dsi_host *msm_host) +{ + /* Drop the performance state vote */ + dev_pm_opp_set_rate(&msm_host->pdev->dev, 0); + dsi_link_clk_disable_6g(msm_host); +} + void dsi_link_clk_disable_v2(struct msm_dsi_host *msm_host) { clk_disable_unprepare(msm_host->pixel_clk); @@ -1879,6 +1922,18 @@ int msm_dsi_host_init(struct msm_dsi *msm_dsi) goto fail; } + msm_host->opp_table = dev_pm_opp_set_clkname(&pdev->dev, "byte"); + if (IS_ERR(msm_host->opp_table)) + return PTR_ERR(msm_host->opp_table); + /* OPP table is optional */ + ret = dev_pm_opp_of_add_table(&pdev->dev); + if (!ret) { + msm_host->has_opp_table = true; + } else if (ret != -ENODEV) { + dev_err(&pdev->dev, "invalid OPP table in device tree\n"); + return ret; + } + init_completion(&msm_host->dma_comp); init_completion(&msm_host->video_comp); mutex_init(&msm_host->dev_mutex); @@ -1914,6 +1969,9 @@ void msm_dsi_host_destroy(struct mipi_dsi_host *host) mutex_destroy(&msm_host->cmd_mutex); mutex_destroy(&msm_host->dev_mutex); + if (msm_host->has_opp_table) + dev_pm_opp_of_remove_table(&msm_host->pdev->dev); + dev_pm_opp_put_clkname(msm_host->opp_table); pm_runtime_disable(&msm_host->pdev->dev); }