From patchwork Fri Nov 3 12:29:01 2023 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 8bit X-Patchwork-Submitter: Bryan O'Donoghue X-Patchwork-Id: 740786 Return-Path: X-Spam-Checker-Version: SpamAssassin 3.4.0 (2014-02-07) on aws-us-west-2-korg-lkml-1.web.codeaurora.org Received: from vger.kernel.org (vger.kernel.org [23.128.96.18]) by smtp.lore.kernel.org (Postfix) with ESMTP id F26CAC41535 for ; Fri, 3 Nov 2023 12:29:22 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1376673AbjKCM3V (ORCPT ); Fri, 3 Nov 2023 08:29:21 -0400 Received: from lindbergh.monkeyblade.net ([23.128.96.19]:45734 "EHLO lindbergh.monkeyblade.net" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1376549AbjKCM3U (ORCPT ); Fri, 3 Nov 2023 08:29:20 -0400 Received: from mail-wm1-x332.google.com (mail-wm1-x332.google.com [IPv6:2a00:1450:4864:20::332]) by lindbergh.monkeyblade.net (Postfix) with ESMTPS id A2A93D5A for ; Fri, 3 Nov 2023 05:29:07 -0700 (PDT) Received: by mail-wm1-x332.google.com with SMTP id 5b1f17b1804b1-40838915cecso14784115e9.2 for ; Fri, 03 Nov 2023 05:29:07 -0700 (PDT) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=linaro.org; s=google; t=1699014546; x=1699619346; darn=vger.kernel.org; h=cc:to:in-reply-to:references:message-id:content-transfer-encoding :mime-version:subject:date:from:from:to:cc:subject:date:message-id :reply-to; bh=Kfmsv1+9a7xxjyHODu3lURwTZ23LFgQq1tCajTllXGQ=; b=hNfv1JGpj5M/h6XSF9pm1tlKSQKiMhZHAaDy/fCYFbNmPknyUPlPUyVH/Mdtajxzx7 WIoC82Hv910kMCKIS/AXRiOUAEZUUM2y8Rb8uFKlRVWzbGxJIy9I4o3sbgvAK1X/WCMg OZfcQDCJNWoqGhV3akDq+fBRf9twxhoWyPNCP8spEYSwsAFgoyZWW4kKXEvJnZwp2guC OF14Ygo0sNpp9oHjr7NXM+4BECO8Fsv8wlOcQBR3tlgtqjqTLrfbz+BaXFvJupEtUXia d1VJq/dA2TDaKBosGn3AmIlB2XhpUdN7j+4dY6BUgBMSrPgftMIPxe+zm5ztepb2LSdG F+8A== X-Google-DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=1e100.net; s=20230601; t=1699014546; x=1699619346; h=cc:to:in-reply-to:references:message-id:content-transfer-encoding :mime-version:subject:date:from:x-gm-message-state:from:to:cc :subject:date:message-id:reply-to; bh=Kfmsv1+9a7xxjyHODu3lURwTZ23LFgQq1tCajTllXGQ=; b=HnrivmUVawNNP1tuSwZhzVtTm/+TdD+tNYp2p8SRMuJx7J64VQ/Z15eg7l6rM6u5W+ anTG07jBfP/H6NRpOZ/T1DcILXFW/5dk1pr8etLG4M7q7wMvpPmTOa/XikgsLQVpAKtA 8BY7hp4r4YA7qdo8kWfGgz2HURnw/wb7LrMn6s9T5IUY/r+qUU9rG6/ohNbYKNx6utLP 1pVA/CeX+/AN/RXnfKqcNxCV5YrRr/XjFJw6qnchdawXr45gvUvKL61gs0GcQZ1B7m3g 4Wb7I2nQZ9tMdYSYj8WUCWpO4VZNr+jFCwb1+XU/v51zRkyTBpLlbvJRNovI+vgyQwh9 LHUA== X-Gm-Message-State: AOJu0YxXvtv0IdBwYMxb+A/g4D4EV1CrjAlcgLgrUN9Hcu/ssOGmnMtC tX8eb5tPL4rt4a+5IRGhAGQaiA== X-Google-Smtp-Source: AGHT+IE4lIhsKBaURieeZTScfYBWF0zYielGo2SjTzn0k/QM/wK27e+idd46GZUocyi6msJTXDOoCQ== X-Received: by 2002:a05:600c:4748:b0:408:53d4:52dd with SMTP id w8-20020a05600c474800b0040853d452ddmr17182240wmo.22.1699014546138; Fri, 03 Nov 2023 05:29:06 -0700 (PDT) Received: from [127.0.0.1] ([37.228.218.3]) by smtp.gmail.com with ESMTPSA id ay8-20020a05600c1e0800b0040772138bb7sm2402918wmb.2.2023.11.03.05.29.05 (version=TLS1_3 cipher=TLS_AES_256_GCM_SHA384 bits=256/256); Fri, 03 Nov 2023 05:29:05 -0700 (PDT) From: Bryan O'Donoghue Date: Fri, 03 Nov 2023 12:29:01 +0000 Subject: [PATCH v4 4/7] media: qcom: camss: Move VFE power-domain specifics into vfe.c MIME-Version: 1.0 Message-Id: <20231103-b4-camss-named-power-domains-v4-4-33a905359dbc@linaro.org> References: <20231103-b4-camss-named-power-domains-v4-0-33a905359dbc@linaro.org> In-Reply-To: <20231103-b4-camss-named-power-domains-v4-0-33a905359dbc@linaro.org> To: hverkuil-cisco@xs4all.nl, laurent.pinchart@ideasonboard.com, Robert Foss , Todor Tomov , Bryan O'Donoghue , Andy Gross , Bjorn Andersson , Konrad Dybcio , Mauro Carvalho Chehab , matti.lehtimaki@gmail.com, quic_grosikop@quicinc.com Cc: linux-media@vger.kernel.org, linux-arm-msm@vger.kernel.org, linux-kernel@vger.kernel.org X-Mailer: b4 0.13-dev-26615 Precedence: bulk List-ID: X-Mailing-List: linux-arm-msm@vger.kernel.org Moving the location of the hooks to VFE power domains has several advantages. 1. Separation of concerns and functional decomposition. vfe.c should be responsible for and know best how manage power-domains for a VFE, excising from camss.c follows this principle. 2. Embedding a pointer to genpd in struct camss_vfe{} meas that we can dispense with a bunch of kmalloc array inside of camss.c. 3. Splitting up titan top gdsc from vfe/ife gdsc provides a base for breaking up magic indexes in dtsi. Suggested-by: Matti Lehtimäki Tested-by: Matti Lehtimäki Signed-off-by: Bryan O'Donoghue --- drivers/media/platform/qcom/camss/camss-vfe.c | 24 +++++++++- drivers/media/platform/qcom/camss/camss-vfe.h | 2 + drivers/media/platform/qcom/camss/camss.c | 68 +++++++++++++++------------ drivers/media/platform/qcom/camss/camss.h | 4 +- 4 files changed, 63 insertions(+), 35 deletions(-) diff --git a/drivers/media/platform/qcom/camss/camss-vfe.c b/drivers/media/platform/qcom/camss/camss-vfe.c index 5172eb5612a1c..defff24f07ce3 100644 --- a/drivers/media/platform/qcom/camss/camss-vfe.c +++ b/drivers/media/platform/qcom/camss/camss-vfe.c @@ -14,6 +14,7 @@ #include #include #include +#include #include #include #include @@ -1381,8 +1382,13 @@ int msm_vfe_subdev_init(struct camss *camss, struct vfe_device *vfe, if (!res->line_num) return -EINVAL; - if (res->has_pd) - vfe->genpd = camss->genpd[id]; + if (res->has_pd) { + vfe->genpd = dev_pm_domain_attach_by_id(camss->dev, id); + if (IS_ERR(vfe->genpd)) { + ret = PTR_ERR(vfe->genpd); + return ret; + } + } vfe->line_num = res->line_num; vfe->ops->subdev_init(dev, vfe); @@ -1506,6 +1512,20 @@ int msm_vfe_subdev_init(struct camss *camss, struct vfe_device *vfe, return 0; } +/* + * msm_vfe_genpd_cleanup - Cleanup VFE genpd linkages + * @vfe: VFE device + * + */ +void msm_vfe_genpd_cleanup(struct vfe_device *vfe) +{ + if (vfe->genpd_link) + device_link_del(vfe->genpd_link); + + if (vfe->genpd) + dev_pm_domain_detach(vfe->genpd, true); +} + /* * vfe_link_setup - Setup VFE connections * @entity: Pointer to media entity structure diff --git a/drivers/media/platform/qcom/camss/camss-vfe.h b/drivers/media/platform/qcom/camss/camss-vfe.h index 992a2103ec44c..cdbe59d8d437e 100644 --- a/drivers/media/platform/qcom/camss/camss-vfe.h +++ b/drivers/media/platform/qcom/camss/camss-vfe.h @@ -159,6 +159,8 @@ struct camss_subdev_resources; int msm_vfe_subdev_init(struct camss *camss, struct vfe_device *vfe, const struct camss_subdev_resources *res, u8 id); +void msm_vfe_genpd_cleanup(struct vfe_device *vfe); + int msm_vfe_register_entities(struct vfe_device *vfe, struct v4l2_device *v4l2_dev); diff --git a/drivers/media/platform/qcom/camss/camss.c b/drivers/media/platform/qcom/camss/camss.c index ed01a3ac7a38e..f10a47f1aee7d 100644 --- a/drivers/media/platform/qcom/camss/camss.c +++ b/drivers/media/platform/qcom/camss/camss.c @@ -1487,7 +1487,9 @@ static const struct media_device_ops camss_media_ops = { static int camss_configure_pd(struct camss *camss) { struct device *dev = camss->dev; + const struct camss_resources *res = camss->res; int i; + int vfepd_num; int ret; camss->genpd_num = of_count_phandle_with_args(dev->of_node, @@ -1506,45 +1508,42 @@ static int camss_configure_pd(struct camss *camss) if (camss->genpd_num == 1) return 0; - camss->genpd = devm_kmalloc_array(dev, camss->genpd_num, - sizeof(*camss->genpd), GFP_KERNEL); - if (!camss->genpd) - return -ENOMEM; + /* count the # of VFEs which have flagged power-domain */ + for (vfepd_num = i = 0; i < camss->vfe_total_num; i++) { + if (res->vfe_res[i].has_pd) + vfepd_num++; + } - camss->genpd_link = devm_kmalloc_array(dev, camss->genpd_num, - sizeof(*camss->genpd_link), - GFP_KERNEL); - if (!camss->genpd_link) - return -ENOMEM; + /* + * If the number of power-domains is greater than the number of VFEs + * then the additional power-domain is for the entire CAMSS block the + * 'top' power-domain. + */ + if (camss->genpd_num <= vfepd_num) + return 0; /* * VFE power domains are in the beginning of the list, and while all * power domains should be attached, only if TITAN_TOP power domain is * found in the list, it should be linked over here. */ - for (i = 0; i < camss->genpd_num; 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 = dev_pm_domain_attach_by_id(camss->dev, camss->genpd_num - 1); + if (IS_ERR(camss->genpd)) { + ret = PTR_ERR(camss->genpd); + goto fail_pm; } - - if (i > camss->res->vfe_num) { - camss->genpd_link[i - 1] = device_link_add(camss->dev, camss->genpd[i - 1], - DL_FLAG_STATELESS | DL_FLAG_PM_RUNTIME | - DL_FLAG_RPM_ACTIVE); - if (!camss->genpd_link[i - 1]) { - ret = -EINVAL; - goto fail_pm; - } + camss->genpd_link = device_link_add(camss->dev, camss->genpd, + DL_FLAG_STATELESS | DL_FLAG_PM_RUNTIME | + DL_FLAG_RPM_ACTIVE); + if (!camss->genpd_link) { + ret = -EINVAL; + goto fail_pm; } return 0; fail_pm: - for (--i ; i >= 0; i--) - dev_pm_domain_detach(camss->genpd[i], true); + dev_pm_domain_detach(camss->genpd, true); return ret; } @@ -1566,18 +1565,25 @@ static int camss_icc_get(struct camss *camss) return 0; } -static void camss_genpd_cleanup(struct camss *camss) +static void camss_genpd_subdevice_cleanup(struct camss *camss) { int i; + for (i = 0; i < camss->vfe_total_num; i++) + msm_vfe_genpd_cleanup(&camss->vfe[i]); +} + +static void camss_genpd_cleanup(struct camss *camss) +{ if (camss->genpd_num == 1) return; - if (camss->genpd_num > camss->res->vfe_num) - device_link_del(camss->genpd_link[camss->genpd_num - 1]); + if (camss->genpd_link) + device_link_del(camss->genpd_link); + + dev_pm_domain_detach(camss->genpd, true); - for (i = 0; i < camss->genpd_num; i++) - dev_pm_domain_detach(camss->genpd[i], true); + camss_genpd_subdevice_cleanup(camss); } /* diff --git a/drivers/media/platform/qcom/camss/camss.h b/drivers/media/platform/qcom/camss/camss.h index b854cff1774d4..1ba824a2cb76c 100644 --- a/drivers/media/platform/qcom/camss/camss.h +++ b/drivers/media/platform/qcom/camss/camss.h @@ -107,8 +107,8 @@ struct camss { struct vfe_device *vfe; atomic_t ref_count; int genpd_num; - struct device **genpd; - struct device_link **genpd_link; + struct device *genpd; + struct device_link *genpd_link; struct icc_path *icc_path[ICC_SM8250_COUNT]; const struct camss_resources *res; unsigned int vfe_total_num;