From patchwork Fri Jan 8 12:04:23 2021 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Robert Foss X-Patchwork-Id: 359230 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=-17.7 required=3.0 tests=BAYES_00,DKIM_SIGNED, DKIM_VALID, DKIM_VALID_AU, HEADER_FROM_DIFFERENT_DOMAINS, INCLUDES_CR_TRAILER, INCLUDES_PATCH, MAILING_LIST_MULTI, SPF_HELO_NONE, SPF_PASS, TVD_SUBJ_WIPE_DEBT, URIBL_BLOCKED, USER_AGENT_GIT autolearn=unavailable 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 035B2C433DB for ; Fri, 8 Jan 2021 12:07:31 +0000 (UTC) Received: from vger.kernel.org (vger.kernel.org [23.128.96.18]) by mail.kernel.org (Postfix) with ESMTP id A35582388B for ; Fri, 8 Jan 2021 12:07:30 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1727781AbhAHMHA (ORCPT ); Fri, 8 Jan 2021 07:07:00 -0500 Received: from lindbergh.monkeyblade.net ([23.128.96.19]:60826 "EHLO lindbergh.monkeyblade.net" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1727773AbhAHMG7 (ORCPT ); Fri, 8 Jan 2021 07:06:59 -0500 Received: from mail-ed1-x52c.google.com (mail-ed1-x52c.google.com [IPv6:2a00:1450:4864:20::52c]) by lindbergh.monkeyblade.net (Postfix) with ESMTPS id 82C86C061261 for ; Fri, 8 Jan 2021 04:05:16 -0800 (PST) Received: by mail-ed1-x52c.google.com with SMTP id p22so10875341edu.11 for ; Fri, 08 Jan 2021 04:05:16 -0800 (PST) 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 :mime-version:content-transfer-encoding; bh=e66XgcvWsZRO99xPYjtC6XbHGH/alTJHS3H9012bORs=; b=tt/PvoeKTN8bCf+WUsFyB5F2XDdLvFWh+g24DpGvd/BmCgXEqK+nmVPmLksBD2WZNh jtNZu3oZvjyKbmJXxSaaEQKDtqXl/kwiM6kB9+CiBmNZPFxMTp8DLSRW2ZDNx80TS4fv rRiWM72sSFXMwQrsg4+uMGA+QD+ueQZ7GNH2bzfw5MVBFxRNXYoc/Hc5kAlQkORol7Bx QxbkPnlpg5bi9u2FwfgIqe/fymXSbRFazHOvhfK0jPD041gN07V+5KmRVJdWnWz11AEx TMMlMyxoXb8SdUgRh9AaQDcPCbq7uBTWoVU3U/eEZoetEuNR4GUcj2rzaulWhqN9mb6F cjPw== 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:mime-version:content-transfer-encoding; bh=e66XgcvWsZRO99xPYjtC6XbHGH/alTJHS3H9012bORs=; b=c/IlHMcqQ7xEsAOKhtf9u1QYH8jOe7nOyayDAfINO3+iNoXFeVKCaepDVRs+dHpYsu GFCjDVM8nQJUDKe9vJxlRGZsRut9L2cjgERj6UXHs1UE6Rz/iapAZfctwZfr3n4QJkYv vBMb1PDPriwY0wQyWnDDG4w/QwhKl5GNHk/J45wRI4jLV1yYJgrFiWF0aNDk6CNoJpWC KrRLVbxm99hAmIkEGlVf7QkFZWFGQdztNLerZhlpWItHwVdcZmv69YWZKwN9OzAuDLed zbRXs9g43Gj56YGkr7vVgX3XQPuSg/iWiblMll1/V2dWkQjUbWch8hVynlnEbDxsH8yX 9Pqw== X-Gm-Message-State: AOAM533aYUMFCWXghvdHhBsyW9SnzZyDs1dX+X6DcrfqBWgN8EHJtV1U zr9+UXKPeX+Buwp5nqq5WMm9WX0L5G0uxw== X-Google-Smtp-Source: ABdhPJx7+aLL9+oEjag51ZSkjuznmrkP4b7PjqBifjDUprIduTAcmzSTXkn1VonUmV50Fm90cO0y6A== X-Received: by 2002:a05:6402:46:: with SMTP id f6mr5009518edu.163.1610107515218; Fri, 08 Jan 2021 04:05:15 -0800 (PST) Received: from localhost.localdomain ([2a02:2450:102f:d6a:bb2e:8b50:322a:1b9a]) by smtp.gmail.com with ESMTPSA id i18sm3674498edt.68.2021.01.08.04.05.13 (version=TLS1_3 cipher=TLS_AES_256_GCM_SHA384 bits=256/256); Fri, 08 Jan 2021 04:05:14 -0800 (PST) From: Robert Foss To: agross@kernel.org, bjorn.andersson@linaro.org, robert.foss@linaro.org, todor.too@gmail.com, mchehab@kernel.org, robh+dt@kernel.org, catalin.marinas@arm.com, will@kernel.org, shawnguo@kernel.org, leoyang.li@nxp.com, geert+renesas@glider.be, arnd@arndb.de, Anson.Huang@nxp.com, michael@walle.cc, agx@sigxcpu.org, max.oss.09@gmail.com, linux-arm-msm@vger.kernel.org, linux-media@vger.kernel.org, devicetree@vger.kernel.org, linux-kernel@vger.kernel.org, linux-arm-kernel@lists.infradead.org, AngeloGioacchino Del Regno , Andrey Konovalov Cc: Tomasz Figa , Azam Sadiq Pasha Kapatrala Syed , Sarvesh Sridutt , Laurent Pinchart Subject: [PATCH v1 11/17] media: camss: Remove per VFE power domain toggling Date: Fri, 8 Jan 2021 13:04:23 +0100 Message-Id: <20210108120429.895046-12-robert.foss@linaro.org> X-Mailer: git-send-email 2.27.0 In-Reply-To: <20210108120429.895046-1-robert.foss@linaro.org> References: <20210108120429.895046-1-robert.foss@linaro.org> MIME-Version: 1.0 Precedence: bulk List-ID: X-Mailing-List: devicetree@vger.kernel.org For Titan ISPs clocks fail to re-enable during vfe_get() after any vfe has been halted and its corresponding power domain power has been detached. Since all of the clocks depend on all of the PDs, per VFE PD detaching is no option for this generation of HW. Signed-off-by: Robert Foss --- .../media/platform/qcom/camss/camss-ispif.c | 11 --- drivers/media/platform/qcom/camss/camss-vfe.c | 7 -- drivers/media/platform/qcom/camss/camss.c | 94 +++++++++++-------- drivers/media/platform/qcom/camss/camss.h | 12 +-- 4 files changed, 60 insertions(+), 64 deletions(-) diff --git a/drivers/media/platform/qcom/camss/camss-ispif.c b/drivers/media/platform/qcom/camss/camss-ispif.c index 0c804584dd65..e0e744551769 100644 --- a/drivers/media/platform/qcom/camss/camss-ispif.c +++ b/drivers/media/platform/qcom/camss/camss-ispif.c @@ -323,14 +323,6 @@ static int ispif_reset(struct ispif_device *ispif, u8 vfe_id) struct camss *camss = ispif->camss; int ret; - ret = camss_pm_domain_on(camss, PM_DOMAIN_VFE0); - if (ret < 0) - return ret; - - ret = camss_pm_domain_on(camss, PM_DOMAIN_VFE1); - if (ret < 0) - return ret; - ret = camss_enable_clocks(ispif->nclocks_for_reset, ispif->clock_for_reset, camss->dev); @@ -343,9 +335,6 @@ static int ispif_reset(struct ispif_device *ispif, u8 vfe_id) camss_disable_clocks(ispif->nclocks_for_reset, ispif->clock_for_reset); - camss_pm_domain_off(camss, PM_DOMAIN_VFE0); - camss_pm_domain_off(camss, PM_DOMAIN_VFE1); - return ret; } diff --git a/drivers/media/platform/qcom/camss/camss-vfe.c b/drivers/media/platform/qcom/camss/camss-vfe.c index 5a874b544391..5054cd9b570c 100644 --- a/drivers/media/platform/qcom/camss/camss-vfe.c +++ b/drivers/media/platform/qcom/camss/camss-vfe.c @@ -587,10 +587,6 @@ static int vfe_get(struct vfe_device *vfe) mutex_lock(&vfe->power_lock); if (vfe->power_count == 0) { - ret = camss_pm_domain_on(vfe->camss, vfe->id); - if (ret < 0) - goto error_pm_domain; - ret = pm_runtime_get_sync(vfe->camss->dev); if (ret < 0) goto error_pm_runtime_get; @@ -627,9 +623,7 @@ static int vfe_get(struct vfe_device *vfe) error_pm_runtime_get: pm_runtime_put_sync(vfe->camss->dev); - camss_pm_domain_off(vfe->camss, vfe->id); -error_pm_domain: mutex_unlock(&vfe->power_lock); return ret; @@ -653,7 +647,6 @@ static void vfe_put(struct vfe_device *vfe) } camss_disable_clocks(vfe->nclocks, vfe->clock); pm_runtime_put_sync(vfe->camss->dev); - camss_pm_domain_off(vfe->camss, vfe->id); } vfe->power_count--; diff --git a/drivers/media/platform/qcom/camss/camss.c b/drivers/media/platform/qcom/camss/camss.c index b07890a9a01a..259ed094cee4 100644 --- a/drivers/media/platform/qcom/camss/camss.c +++ b/drivers/media/platform/qcom/camss/camss.c @@ -774,28 +774,6 @@ int camss_get_pixel_clock(struct media_entity *entity, u32 *pixel_clock) return 0; } -int camss_pm_domain_on(struct camss *camss, int id) -{ - if (camss->version == CAMSS_8x96 || - camss->version == CAMSS_660) { - camss->genpd_link[id] = device_link_add(camss->dev, - camss->genpd[id], DL_FLAG_STATELESS | - DL_FLAG_PM_RUNTIME | DL_FLAG_RPM_ACTIVE); - - if (!camss->genpd_link[id]) - return -EINVAL; - } - - return 0; -} - -void camss_pm_domain_off(struct camss *camss, int id) -{ - if (camss->version == CAMSS_8x96 || - camss->version == CAMSS_660) - device_link_del(camss->genpd_link[id]); -} - /* * camss_of_parse_endpoint_node - Parse port endpoint node * @dev: Device @@ -1216,6 +1194,48 @@ static const struct media_device_ops camss_media_ops = { .link_notify = v4l2_pipeline_link_notify, }; + +static int camss_configure_pd(struct camss *camss) +{ + int nbr_pm_domains = 0; + int last_pm_domain = 0; + int i; + int ret; + + if (camss->version == CAMSS_8x96 || + camss->version == CAMSS_660) + nbr_pm_domains = PM_DOMAIN_CAMSS_COUNT; + + for (i = 0; i < nbr_pm_domains; i++) { + camss->genpd[i] = dev_pm_domain_attach_by_id(camss->dev, i); + if (IS_ERR(camss->genpd[i])) { + ret = PTR_ERR(camss->genpd[i]); + goto fail_pm; + } + + camss->genpd_link[i] = device_link_add(camss->dev, camss->genpd[i], + DL_FLAG_STATELESS | DL_FLAG_PM_RUNTIME | DL_FLAG_RPM_ACTIVE); + + if (!camss->genpd_link[i]) { + dev_pm_domain_detach(camss->genpd[i], true); + ret = -EINVAL; + goto fail_pm; + } + + last_pm_domain = i; + } + + return 0; + +fail_pm: + for (i = 0; i < last_pm_domain; i++) { + device_link_del(camss->genpd_link[i]); + dev_pm_domain_detach(camss->genpd[i], true); + } + + return ret; +} + /* * camss_probe - Probe CAMSS platform device * @pdev: Pointer to CAMSS platform device @@ -1348,20 +1368,10 @@ static int camss_probe(struct platform_device *pdev) } } - if (camss->version == CAMSS_8x96 || - camss->version == CAMSS_660) { - camss->genpd[PM_DOMAIN_VFE0] = dev_pm_domain_attach_by_id( - camss->dev, PM_DOMAIN_VFE0); - if (IS_ERR(camss->genpd[PM_DOMAIN_VFE0])) - return PTR_ERR(camss->genpd[PM_DOMAIN_VFE0]); - - camss->genpd[PM_DOMAIN_VFE1] = dev_pm_domain_attach_by_id( - camss->dev, PM_DOMAIN_VFE1); - if (IS_ERR(camss->genpd[PM_DOMAIN_VFE1])) { - dev_pm_domain_detach(camss->genpd[PM_DOMAIN_VFE0], - true); - return PTR_ERR(camss->genpd[PM_DOMAIN_VFE1]); - } + ret = camss_configure_pd(camss); + if (ret < 0) { + dev_err(dev, "Failed to configure power domains: %d\n", ret); + return ret; } pm_runtime_enable(dev); @@ -1382,6 +1392,9 @@ static int camss_probe(struct platform_device *pdev) void camss_delete(struct camss *camss) { + int nbr_pm_domains = 0; + int i; + v4l2_device_unregister(&camss->v4l2_dev); media_device_unregister(&camss->media_dev); media_device_cleanup(&camss->media_dev); @@ -1389,9 +1402,12 @@ void camss_delete(struct camss *camss) pm_runtime_disable(camss->dev); if (camss->version == CAMSS_8x96 || - camss->version == CAMSS_660) { - dev_pm_domain_detach(camss->genpd[PM_DOMAIN_VFE0], true); - dev_pm_domain_detach(camss->genpd[PM_DOMAIN_VFE1], true); + camss->version == CAMSS_660) + nbr_pm_domains = PM_DOMAIN_CAMSS_COUNT; + + for (i = 0; i < nbr_pm_domains; i++) { + device_link_del(camss->genpd_link[i]); + dev_pm_domain_detach(camss->genpd[i], true); } kfree(camss); diff --git a/drivers/media/platform/qcom/camss/camss.h b/drivers/media/platform/qcom/camss/camss.h index b7ad8e9f68a8..7560d85b3352 100644 --- a/drivers/media/platform/qcom/camss/camss.h +++ b/drivers/media/platform/qcom/camss/camss.h @@ -57,9 +57,9 @@ struct resources_ispif { }; enum pm_domain { - PM_DOMAIN_VFE0, - PM_DOMAIN_VFE1, - PM_DOMAIN_COUNT + PM_DOMAIN_VFE0 = 0, + PM_DOMAIN_VFE1 = 1, + PM_DOMAIN_CAMSS_COUNT = 2, /* CAMSS series of ISPs */ }; enum camss_version { @@ -83,8 +83,8 @@ struct camss { int vfe_num; struct vfe_device *vfe; atomic_t ref_count; - struct device *genpd[PM_DOMAIN_COUNT]; - struct device_link *genpd_link[PM_DOMAIN_COUNT]; + struct device *genpd[PM_DOMAIN_CAMSS_COUNT]; + struct device_link *genpd_link[PM_DOMAIN_CAMSS_COUNT]; }; struct camss_camera_interface { @@ -110,8 +110,6 @@ int camss_enable_clocks(int nclocks, struct camss_clock *clock, void camss_disable_clocks(int nclocks, struct camss_clock *clock); struct media_entity *camss_find_sensor(struct media_entity *entity); int camss_get_pixel_clock(struct media_entity *entity, u32 *pixel_clock); -int camss_pm_domain_on(struct camss *camss, int id); -void camss_pm_domain_off(struct camss *camss, int id); void camss_delete(struct camss *camss); #endif /* QC_MSM_CAMSS_H */