From patchwork Tue Oct 24 22:42:55 2023 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Bryan O'Donoghue X-Patchwork-Id: 13435331 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 C0C09C25B6C for ; Tue, 24 Oct 2023 22:43:22 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1344569AbjJXWnW (ORCPT ); Tue, 24 Oct 2023 18:43:22 -0400 Received: from lindbergh.monkeyblade.net ([23.128.96.19]:35542 "EHLO lindbergh.monkeyblade.net" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1344578AbjJXWnU (ORCPT ); Tue, 24 Oct 2023 18:43:20 -0400 Received: from mail-wm1-x334.google.com (mail-wm1-x334.google.com [IPv6:2a00:1450:4864:20::334]) by lindbergh.monkeyblade.net (Postfix) with ESMTPS id E66FC10C9 for ; Tue, 24 Oct 2023 15:43:15 -0700 (PDT) Received: by mail-wm1-x334.google.com with SMTP id 5b1f17b1804b1-40806e4106dso1377875e9.1 for ; Tue, 24 Oct 2023 15:43:15 -0700 (PDT) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=linaro.org; s=google; t=1698187394; x=1698792194; darn=vger.kernel.org; h=content-transfer-encoding:mime-version:references:in-reply-to :message-id:date:subject:cc:to:from:from:to:cc:subject:date :message-id:reply-to; bh=SrD6kKZF7oe0EGz2m2BzMlSzxhpuIf6zdpgGnAoBqe0=; b=RHEOHoJzJFJArR915qg0a07zoxtYPHOcfW64btcAsV3T3nqme2vbZFmmgql02eXOr2 P5MJJnE7NE3gG1cxgJw3/kspr9hGS9WboqNNC04aPuFPVIj3JV+PWLvXUTBt/g9vTSCW S4VLy7GS+mcGBeeM9fzCOn+ViZ2Uc+xB2uVlQBc6StdX9QiefvqyD1toUNUDMQDyIacz RHzjr5XBZRiPUoHWFN9+NDpAqLpYlSVyafPdVU7q4r965vZrUVU4LHnaqB5V0/WJcbkU vrgH39kyTsezYSFIT5aC+xwdzRWZuKMg2wynefvQ6wFdLRb789jxVq0MrEHI95G90DLn WQKA== X-Google-DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=1e100.net; s=20230601; t=1698187394; x=1698792194; h=content-transfer-encoding:mime-version:references:in-reply-to :message-id:date:subject:cc:to:from:x-gm-message-state:from:to:cc :subject:date:message-id:reply-to; bh=SrD6kKZF7oe0EGz2m2BzMlSzxhpuIf6zdpgGnAoBqe0=; b=OA4MrLZpg6BYfVi4cc7XWOSAjFR2Yo7HsZHdpz3i3brm2A/kij3nrD3VQ/OMQGzY1U uR2dvsUmAeL6iehSUI4yJqinPx0QD282rMetwKVqfLbeIX7EzoOi9MgyI16oe7QvR+zj IJZaz1RvLJ8pVUqRGfSjUOi0HdbAcBn7XBwWDAH7OdMVp/ZjFEsRAVzg2GHXGxDvGsef pMFRmE9YgrgT+CXcb8GUcResJmecJNK4YQrW7+TA94TQB8Ndqg65ovq2YUEaOjabmcYD 7GWtEgyM89wR0s31MlBIua2F8uPsnQiRVg67eviyxXPGDIB4B8iCWnVhW9LJKHAMcUiJ rMQQ== X-Gm-Message-State: AOJu0YyhDLO+6GlrIMik4LB1x646bcz+pgG/XCZb17yP44ynbGX4G2Q3 k3FZnwvUNHrKo37ZO+34MbYY+w== X-Google-Smtp-Source: AGHT+IEYf4pOVluKThmKF4lza0zIsYrPshinEKC/xI+uP8ok92ga7euV1fdER2WyFhm8p6FlDFgF6A== X-Received: by 2002:a05:600c:3414:b0:401:c7ec:b930 with SMTP id y20-20020a05600c341400b00401c7ecb930mr15349644wmp.10.1698187394317; Tue, 24 Oct 2023 15:43:14 -0700 (PDT) Received: from sagittarius-a.nxsw.local ([37.228.218.3]) by smtp.gmail.com with ESMTPSA id j6-20020a05600c190600b0040641a9d49bsm13049531wmq.17.2023.10.24.15.43.13 (version=TLS1_3 cipher=TLS_AES_256_GCM_SHA384 bits=256/256); Tue, 24 Oct 2023 15:43:13 -0700 (PDT) From: Bryan O'Donoghue To: hverkuil-cisco@xs4all.nl, laurent.pinchart@ideasonboard.com, rfoss@kernel.org, todor.too@gmail.com, agross@kernel.org, andersson@kernel.org, konrad.dybcio@linaro.org, mchehab@kernel.org Cc: linux-media@vger.kernel.org, linux-arm-msm@vger.kernel.org, linux-kernel@vger.kernel.org, Bryan O'Donoghue Subject: [PATCH 4/4] media: qcom: camss: Add support for named power-domains Date: Tue, 24 Oct 2023 23:42:55 +0100 Message-ID: <20231024224255.754779-5-bryan.odonoghue@linaro.org> X-Mailer: git-send-email 2.42.0 In-Reply-To: <20231024224255.754779-1-bryan.odonoghue@linaro.org> References: <20231024224255.754779-1-bryan.odonoghue@linaro.org> MIME-Version: 1.0 Precedence: bulk List-ID: X-Mailing-List: linux-arm-msm@vger.kernel.org Right now we use fixed indexes to assign power-domains, with a requirement for the TOP GDSC to come last in the list. Adding support for named power-domains means the declaration in the dtsi can come in any order. After this change we continue to support the old indexing - if a SoC resource declration or the in-use dtb doesn't declare power-domain names we fall back to the default legacy indexing. From this point on though new SoC additions should contain named power-domains, eventually we will drop support for legacy indexing. Signed-off-by: Bryan O'Donoghue --- drivers/media/platform/qcom/camss/camss-vfe.c | 24 ++++++++++++++++- drivers/media/platform/qcom/camss/camss.c | 26 +++++++++++++++---- drivers/media/platform/qcom/camss/camss.h | 2 ++ 3 files changed, 46 insertions(+), 6 deletions(-) diff --git a/drivers/media/platform/qcom/camss/camss-vfe.c b/drivers/media/platform/qcom/camss/camss-vfe.c index bc14ae4771e31..12c64c505befd 100644 --- a/drivers/media/platform/qcom/camss/camss-vfe.c +++ b/drivers/media/platform/qcom/camss/camss-vfe.c @@ -1381,7 +1381,29 @@ int msm_vfe_subdev_init(struct camss *camss, struct vfe_device *vfe, if (!res->line_num) return -EINVAL; - if (camss->genpd) { + /* Power domain */ + + if (res->pd_name) { + vfe->genpd = dev_pm_domain_attach_by_name(camss->dev, + res->pd_name); + if (IS_ERR(vfe->genpd)) { + ret = PTR_ERR(vfe->genpd); + return ret; + } + } + + if (camss->genpd && !vfe->genpd) { + /* + * Legacy magic index. + * Requires + * power-domain = , + * , + * + * id must correspondng to the index of the VFE which must + * come before the TOP GDSC. VFE Lite has no individually + * collapasible domain which is why id < vfe_num is a valid + * check. + */ vfe->genpd = dev_pm_domain_attach_by_id(camss->dev, id); if (IS_ERR(vfe->genpd)) { ret = PTR_ERR(vfe->genpd); diff --git a/drivers/media/platform/qcom/camss/camss.c b/drivers/media/platform/qcom/camss/camss.c index 523b36d86f6cf..fb5276f4d9448 100644 --- a/drivers/media/platform/qcom/camss/camss.c +++ b/drivers/media/platform/qcom/camss/camss.c @@ -1506,12 +1506,28 @@ static int camss_configure_pd(struct camss *camss) 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. + * If a power-domain name is defined try to use it. + * It is possible we are running a new kernel with an old dtb so + * fallback to indexes even if a pd_name is defined but not found. */ - camss->genpd = dev_pm_domain_attach_by_id(camss->dev, camss->genpd_num - 1); - if (IS_ERR(camss->genpd)) { + if (camss->res->pd_name) { + camss->genpd = dev_pm_domain_attach_by_name(camss->dev, + camss->res->pd_name); + if (IS_ERR(camss->genpd)) { + ret = PTR_ERR(camss->genpd); + goto fail_pm; + } + } + + if (!camss->genpd) { + /* + * Legacy magic index. TITAN_TOP GDSC must be the last + * item in the power-domain list. + */ + camss->genpd = dev_pm_domain_attach_by_id(camss->dev, + camss->genpd_num - 1); + } + if (IS_ERR_OR_NULL(camss->genpd)) { ret = PTR_ERR(camss->genpd); goto fail_pm; } diff --git a/drivers/media/platform/qcom/camss/camss.h b/drivers/media/platform/qcom/camss/camss.h index 95486c494afc6..6762ce9631476 100644 --- a/drivers/media/platform/qcom/camss/camss.h +++ b/drivers/media/platform/qcom/camss/camss.h @@ -48,6 +48,7 @@ struct camss_subdev_resources { u32 clock_rate[CAMSS_RES_MAX][CAMSS_RES_MAX]; char *reg[CAMSS_RES_MAX]; char *interrupt[CAMSS_RES_MAX]; + char *pd_name; u8 line_num; const void *ops; }; @@ -83,6 +84,7 @@ enum icc_count { struct camss_resources { enum camss_version version; + const char *pd_name; const struct camss_subdev_resources *csiphy_res; const struct camss_subdev_resources *csid_res; const struct camss_subdev_resources *ispif_res;