From patchwork Tue Mar 16 17:19:21 2021 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Robert Foss X-Patchwork-Id: 403282 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=-18.8 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, 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 CA46FC4161F for ; Tue, 16 Mar 2021 17:21:13 +0000 (UTC) Received: from vger.kernel.org (vger.kernel.org [23.128.96.18]) by mail.kernel.org (Postfix) with ESMTP id B1C7D6512B for ; Tue, 16 Mar 2021 17:21:13 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S238942AbhCPRUy (ORCPT ); Tue, 16 Mar 2021 13:20:54 -0400 Received: from lindbergh.monkeyblade.net ([23.128.96.19]:60782 "EHLO lindbergh.monkeyblade.net" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S239122AbhCPRU1 (ORCPT ); Tue, 16 Mar 2021 13:20:27 -0400 Received: from mail-ej1-x62f.google.com (mail-ej1-x62f.google.com [IPv6:2a00:1450:4864:20::62f]) by lindbergh.monkeyblade.net (Postfix) with ESMTPS id 1FEDFC0613DE for ; Tue, 16 Mar 2021 10:20:26 -0700 (PDT) Received: by mail-ej1-x62f.google.com with SMTP id e19so73558614ejt.3 for ; Tue, 16 Mar 2021 10:20:26 -0700 (PDT) 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=fGj2l2VE6J1V1BQlW8m1wvdITVQJXxgbVrmLinREqVU=; b=CeF3vEaWwBDUWKv0QjNH7LDMnBjTk2E5f71qNhjEXebqXUwXpRBadK52zKQRNlJfAR m0a46EIzDByRrBuIWqO8Un+slz0xmzxvutdBgAxqIsnAVv2jix57ajszq8DYvrCoZq2c 7/nw1ub28l4HS2VxCDRc8DupvyJ/PBd7YSULUmlGxUD5xlsxjs12q6RiZ1VkaULqHsZj jF+n+0F2s4/zKV8fKvWdUv4tW670cKi1kgn7X/CwY9pvtTvYw6h7tYxxosZhrzrdFybx qEs20aHCLovPFFT5CkwCpSqMXzrvaDJKQjAVZ2CPWZNsvI6Av7XW8aCwHd3fOlfSX45Q mq9Q== 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=fGj2l2VE6J1V1BQlW8m1wvdITVQJXxgbVrmLinREqVU=; b=iDXRvG+/VJXqAqmqkX+PVLAXwDKGBu7uuWMQDT7V2s6WoggDaM0Q2nkeVyxYHdykLe 9FVfhSWNCGUhI0YEPHSTViCbktV48WDRLq3i4eq66Loo1KX+a30k7Aog5tfch6UqJzAb SVgmIpfLJTzAMXbuUorXTuFY1UrrpAKDNUhdStRFnGeqysXl+7ISX3gBa7qCUEfpC4JY R/6jcYpwniX5F0LtXQbE2XP1nOK6KST8nEKb7NgQ9HsuChsbzPLtPRwQusj5CuwN7WX7 9XGzcRU1ryfR2KpukGnFy2BhS8AMw3rDdCIpKzyBtRCqbOipadJ/AqnzAANXSpZ7hZiS 0wFg== X-Gm-Message-State: AOAM532jGyKPzmex3xwQurtIM4q3qeYwZYPwnpCVtVnD6pQieJEvIRpI mkfltKq5G3t/HQOBY/ru6KIP6UQnsBeHOm8J X-Google-Smtp-Source: ABdhPJyvkUxuAA+dfzwGe8uUOQGa9NfDkP22FvgsZfxesgV/VmRnv1RFOlAW9OKPTi0YpYu6oPGHRQ== X-Received: by 2002:a17:906:2c44:: with SMTP id f4mr29906347ejh.508.1615915224783; Tue, 16 Mar 2021 10:20:24 -0700 (PDT) Received: from localhost.localdomain ([37.120.1.234]) by smtp.gmail.com with ESMTPSA id u1sm10571584edv.90.2021.03.16.10.20.23 (version=TLS1_3 cipher=TLS_AES_256_GCM_SHA384 bits=256/256); Tue, 16 Mar 2021 10:20:24 -0700 (PDT) From: Robert Foss To: robert.foss@linaro.org, todor.too@gmail.com, agross@kernel.org, bjorn.andersson@linaro.org, mchehab@kernel.org, robh+dt@kernel.org, angelogioacchino.delregno@somainline.org, linux-media@vger.kernel.org, linux-arm-msm@vger.kernel.org, devicetree@vger.kernel.org, linux-kernel@vger.kernel.org, AngeloGioacchino Del Regno , Sakari Ailus , Andrey Konovalov , Hans Verkuil Cc: Rob Herring , Tomasz Figa , Azam Sadiq Pasha Kapatrala Syed , Sarvesh Sridutt , Laurent Pinchart , Jonathan Marek Subject: [PATCH v9 12/22] media: camss: Refactor VFE power domain toggling Date: Tue, 16 Mar 2021 18:19:21 +0100 Message-Id: <20210316171931.812748-13-robert.foss@linaro.org> X-Mailer: git-send-email 2.27.0 In-Reply-To: <20210316171931.812748-1-robert.foss@linaro.org> References: <20210316171931.812748-1-robert.foss@linaro.org> MIME-Version: 1.0 Precedence: bulk List-ID: X-Mailing-List: linux-arm-msm@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 Gen2 HW. In order to not have regressions on for Gen1 HW, refactor the power domain management into hardware version specific code paths. Signed-off-by: Robert Foss Reviewed-by: Andrey Konovalov --- Changes since v5: - Andrey: Bifurcated PD support into Gen1 & Gen2 paths Changes since v6: - Andrey: Add r-b - Improved commit msg .../media/platform/qcom/camss/camss-vfe-170.c | 20 ++++ .../media/platform/qcom/camss/camss-vfe-4-1.c | 20 ++++ .../media/platform/qcom/camss/camss-vfe-4-7.c | 39 ++++++++ .../media/platform/qcom/camss/camss-vfe-4-8.c | 34 +++++++ drivers/media/platform/qcom/camss/camss-vfe.c | 6 +- drivers/media/platform/qcom/camss/camss-vfe.h | 2 + drivers/media/platform/qcom/camss/camss.c | 93 +++++++++++++------ drivers/media/platform/qcom/camss/camss.h | 10 +- 8 files changed, 188 insertions(+), 36 deletions(-) diff --git a/drivers/media/platform/qcom/camss/camss-vfe-170.c b/drivers/media/platform/qcom/camss/camss-vfe-170.c index 18d63c2c9d2b..8594d275b41d 100644 --- a/drivers/media/platform/qcom/camss/camss-vfe-170.c +++ b/drivers/media/platform/qcom/camss/camss-vfe-170.c @@ -695,6 +695,24 @@ static void vfe_isr_wm_done(struct vfe_device *vfe, u8 wm) spin_unlock_irqrestore(&vfe->output_lock, flags); } +/* + * vfe_pm_domain_off - Disable power domains specific to this VFE. + * @vfe: VFE Device + */ +static void vfe_pm_domain_off(struct vfe_device *vfe) +{ + /* nop */ +} + +/* + * vfe_pm_domain_on - Enable power domains specific to this VFE. + * @vfe: VFE Device + */ +static int vfe_pm_domain_on(struct vfe_device *vfe) +{ + return 0; +} + /* * vfe_queue_buffer - Add empty buffer * @vid: Video device structure @@ -756,6 +774,8 @@ const struct vfe_hw_ops vfe_ops_170 = { .hw_version_read = vfe_hw_version_read, .isr_read = vfe_isr_read, .isr = vfe_isr, + .pm_domain_off = vfe_pm_domain_off, + .pm_domain_on = vfe_pm_domain_on, .reg_update_clear = vfe_reg_update_clear, .reg_update = vfe_reg_update, .subdev_init = vfe_subdev_init, diff --git a/drivers/media/platform/qcom/camss/camss-vfe-4-1.c b/drivers/media/platform/qcom/camss/camss-vfe-4-1.c index 636c0515506e..53c56a8d4545 100644 --- a/drivers/media/platform/qcom/camss/camss-vfe-4-1.c +++ b/drivers/media/platform/qcom/camss/camss-vfe-4-1.c @@ -938,6 +938,24 @@ static irqreturn_t vfe_isr(int irq, void *dev) return IRQ_HANDLED; } +/* + * vfe_pm_domain_off - Disable power domains specific to this VFE. + * @vfe: VFE Device + */ +static void vfe_pm_domain_off(struct vfe_device *vfe) +{ + /* nop */ +} + +/* + * vfe_pm_domain_on - Enable power domains specific to this VFE. + * @vfe: VFE Device + */ +static int vfe_pm_domain_on(struct vfe_device *vfe) +{ + return 0; +} + static const struct vfe_hw_ops_gen1 vfe_ops_gen1_4_1 = { .bus_connect_wm_to_rdi = vfe_bus_connect_wm_to_rdi, .bus_disconnect_wm_from_rdi = vfe_bus_disconnect_wm_from_rdi, @@ -989,6 +1007,8 @@ const struct vfe_hw_ops vfe_ops_4_1 = { .hw_version_read = vfe_hw_version_read, .isr_read = vfe_isr_read, .isr = vfe_isr, + .pm_domain_off = vfe_pm_domain_off, + .pm_domain_on = vfe_pm_domain_on, .reg_update_clear = vfe_reg_update_clear, .reg_update = vfe_reg_update, .subdev_init = vfe_subdev_init, diff --git a/drivers/media/platform/qcom/camss/camss-vfe-4-7.c b/drivers/media/platform/qcom/camss/camss-vfe-4-7.c index f5ba09a93016..a59635217758 100644 --- a/drivers/media/platform/qcom/camss/camss-vfe-4-7.c +++ b/drivers/media/platform/qcom/camss/camss-vfe-4-7.c @@ -8,6 +8,7 @@ * Copyright (C) 2015-2018 Linaro Ltd. */ +#include #include #include #include @@ -1104,6 +1105,42 @@ static void vfe_isr_read(struct vfe_device *vfe, u32 *value0, u32 *value1) writel_relaxed(VFE_0_IRQ_CMD_GLOBAL_CLEAR, vfe->base + VFE_0_IRQ_CMD); } +/* + * vfe_pm_domain_off - Disable power domains specific to this VFE. + * @vfe: VFE Device + */ +static void vfe_pm_domain_off(struct vfe_device *vfe) +{ + struct camss *camss; + + if (!vfe) + return; + + camss = vfe->camss; + + device_link_del(camss->genpd_link[vfe->id]); +} + +/* + * vfe_pm_domain_on - Enable power domains specific to this VFE. + * @vfe: VFE Device + */ +static int vfe_pm_domain_on(struct vfe_device *vfe) +{ + struct camss *camss = vfe->camss; + enum vfe_line_id id = vfe->id; + + 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]) { + dev_err(vfe->camss->dev, "Failed to add VFE#%d to power domain\n", id); + return -EINVAL; + } + + return 0; +} + static void vfe_violation_read(struct vfe_device *vfe) { u32 violation = readl_relaxed(vfe->base + VFE_0_VIOLATION_STATUS); @@ -1162,6 +1199,8 @@ const struct vfe_hw_ops vfe_ops_4_7 = { .hw_version_read = vfe_hw_version_read, .isr_read = vfe_isr_read, .isr = vfe_isr, + .pm_domain_off = vfe_pm_domain_off, + .pm_domain_on = vfe_pm_domain_on, .reg_update_clear = vfe_reg_update_clear, .reg_update = vfe_reg_update, .subdev_init = vfe_subdev_init, diff --git a/drivers/media/platform/qcom/camss/camss-vfe-4-8.c b/drivers/media/platform/qcom/camss/camss-vfe-4-8.c index 8c3a5d293a1c..998429dbb65c 100644 --- a/drivers/media/platform/qcom/camss/camss-vfe-4-8.c +++ b/drivers/media/platform/qcom/camss/camss-vfe-4-8.c @@ -8,6 +8,7 @@ * Copyright (C) 2015-2021 Linaro Ltd. */ +#include #include #include #include @@ -1093,6 +1094,37 @@ static void vfe_isr_read(struct vfe_device *vfe, u32 *value0, u32 *value1) writel_relaxed(VFE_0_IRQ_CMD_GLOBAL_CLEAR, vfe->base + VFE_0_IRQ_CMD); } +/* + * vfe_pm_domain_off - Disable power domains specific to this VFE. + * @vfe: VFE Device + */ +static void vfe_pm_domain_off(struct vfe_device *vfe) +{ + struct camss *camss = vfe->camss; + + device_link_del(camss->genpd_link[vfe->id]); +} + +/* + * vfe_pm_domain_on - Enable power domains specific to this VFE. + * @vfe: VFE Device + */ +static int vfe_pm_domain_on(struct vfe_device *vfe) +{ + struct camss *camss = vfe->camss; + enum vfe_line_id id = vfe->id; + + 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]) { + dev_err(vfe->camss->dev, "Failed to add VFE#%d to power domain\n", id); + return -EINVAL; + } + + return 0; +} + static void vfe_violation_read(struct vfe_device *vfe) { u32 violation = readl_relaxed(vfe->base + VFE_0_VIOLATION_STATUS); @@ -1151,6 +1183,8 @@ const struct vfe_hw_ops vfe_ops_4_8 = { .hw_version_read = vfe_hw_version_read, .isr_read = vfe_isr_read, .isr = vfe_isr, + .pm_domain_off = vfe_pm_domain_off, + .pm_domain_on = vfe_pm_domain_on, .reg_update_clear = vfe_reg_update_clear, .reg_update = vfe_reg_update, .subdev_init = vfe_subdev_init, diff --git a/drivers/media/platform/qcom/camss/camss-vfe.c b/drivers/media/platform/qcom/camss/camss-vfe.c index c4b2c8edb760..15695fd466c4 100644 --- a/drivers/media/platform/qcom/camss/camss-vfe.c +++ b/drivers/media/platform/qcom/camss/camss-vfe.c @@ -580,7 +580,7 @@ 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); + ret = vfe->ops->pm_domain_on(vfe); if (ret < 0) goto error_pm_domain; @@ -620,7 +620,7 @@ 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); + vfe->ops->pm_domain_off(vfe); error_pm_domain: mutex_unlock(&vfe->power_lock); @@ -646,7 +646,7 @@ 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->ops->pm_domain_off(vfe); } vfe->power_count--; diff --git a/drivers/media/platform/qcom/camss/camss-vfe.h b/drivers/media/platform/qcom/camss/camss-vfe.h index 0a594b12a4f1..844b9275031d 100644 --- a/drivers/media/platform/qcom/camss/camss-vfe.h +++ b/drivers/media/platform/qcom/camss/camss-vfe.h @@ -106,6 +106,8 @@ struct vfe_hw_ops { void (*hw_version_read)(struct vfe_device *vfe, struct device *dev); irqreturn_t (*isr)(int irq, void *dev); void (*isr_read)(struct vfe_device *vfe, u32 *value0, u32 *value1); + void (*pm_domain_off)(struct vfe_device *vfe); + int (*pm_domain_on)(struct vfe_device *vfe); void (*reg_update)(struct vfe_device *vfe, enum vfe_line_id line_id); void (*reg_update_clear)(struct vfe_device *vfe, enum vfe_line_id line_id); diff --git a/drivers/media/platform/qcom/camss/camss.c b/drivers/media/platform/qcom/camss/camss.c index d022aed47e25..9b23285d1c20 100644 --- a/drivers/media/platform/qcom/camss/camss.c +++ b/drivers/media/platform/qcom/camss/camss.c @@ -799,24 +799,24 @@ int camss_get_pixel_clock(struct media_entity *entity, u64 *pixel_clock) 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); + int ret = 0; + + if (id < camss->vfe_num) { + struct vfe_device *vfe = &camss->vfe[id]; - if (!camss->genpd_link[id]) - return -EINVAL; + ret = vfe->ops->pm_domain_on(vfe); } - return 0; + return ret; } 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]); + if (id < camss->vfe_num) { + struct vfe_device *vfe = &camss->vfe[id]; + + vfe->ops->pm_domain_off(vfe); + } } /* @@ -1234,6 +1234,47 @@ 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_GEN1_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 @@ -1366,20 +1407,10 @@ 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); @@ -1400,6 +1431,9 @@ 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); @@ -1407,9 +1441,12 @@ 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_GEN1_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 0f8f77801001..33ed16ab821d 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_GEN1_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_GEN1_COUNT]; + struct device_link *genpd_link[PM_DOMAIN_GEN1_COUNT]; }; struct camss_camera_interface {