From: Andrey Konovalov <andrey.konovalov@linaro.org>
To: Robert Foss <robert.foss@linaro.org>,
agross@kernel.org, bjorn.andersson@linaro.org,
todor.too@gmail.com, mchehab@kernel.org, robh+dt@kernel.org,
angelogioacchino.delregno@somainline.org,
linux-arm-msm@vger.kernel.org, linux-media@vger.kernel.org,
devicetree@vger.kernel.org, linux-kernel@vger.kernel.org,
AngeloGioacchino Del Regno <kholk11@gmail.com>,
Sakari Ailus <sakari.ailus@iki.fi>,
Nicolas Boichat <drinkcat@chromium.org>
Cc: Rob Herring <robh@kernel.org>, Tomasz Figa <tfiga@chromium.org>,
Azam Sadiq Pasha Kapatrala Syed <akapatra@quicinc.com>,
Sarvesh Sridutt <Sarvesh.Sridutt@smartwirelesscompute.com>,
Laurent Pinchart <laurent.pinchart@ideasonboard.com>,
Jonathan Marek <jonathan@marek.ca>
Subject: Re: [PATCH v5 12/22] media: camss: Remove per VFE power domain toggling
Date: Mon, 22 Feb 2021 14:44:57 +0300 [thread overview]
Message-ID: <32b2cd1d-e41a-4571-ac4f-4ec055b3f6cb@linaro.org> (raw)
In-Reply-To: <20210217112122.424236-13-robert.foss@linaro.org>
Hi Robert,
Thank you for your patch!
On 17.02.2021 14:21, Robert Foss wrote:
> 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.
OK.
> Since all of the clocks depend on all of the PDs, per
> VFE PD detaching is no option for this generation of HW.
But this patch removes camss_pm_domain_on/off calls from
vfe_get/put() for all the SOCs, not only for sdm845.
And this looks like a regression (higher power consumption)
for all the generation1 devices.
Is it possible to handle gen1 and gen2 hardware differently,
so that gen1 continued to use camss_pm_domain_on/off as
before?
Thanks,
Andrey
> Signed-off-by: Robert Foss <robert.foss@linaro.org>
> ---
> .../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 fc121da4ab0c..b88f4025010a 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 6fafeb8a5484..ed35f9ae9067 100644
> --- a/drivers/media/platform/qcom/camss/camss-vfe.c
> +++ b/drivers/media/platform/qcom/camss/camss-vfe.c
> @@ -580,10 +580,6 @@ 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;
> @@ -620,9 +616,7 @@ 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;
> @@ -646,7 +640,6 @@ 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 5d0479b5589c..3c45537b2cfb 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
> @@ -1207,6 +1185,48 @@ 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
> @@ -1339,20 +1359,10 @@ 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);
> @@ -1373,6 +1383,9 @@ 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);
> @@ -1380,9 +1393,12 @@ 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 */
>
next prev parent reply other threads:[~2021-02-22 11:46 UTC|newest]
Thread overview: 48+ messages / expand[flat|nested] mbox.gz Atom feed top
2021-02-17 11:21 [PATCH v5 00/22] Add support for the SDM845 Camera Subsystem Robert Foss
2021-02-17 11:21 ` [PATCH v5 01/22] media: camss: Fix vfe_isr_comp_done() documentation Robert Foss
2021-02-19 21:05 ` Nicolas Dufresne
2021-02-22 10:51 ` Robert Foss
2021-02-20 18:44 ` Andrey Konovalov
2021-02-17 11:21 ` [PATCH v5 02/22] media: camss: Fix vfe_isr comment typo Robert Foss
2021-02-17 11:21 ` [PATCH v5 03/22] media: camss: Replace trace_printk() with dev_dbg() Robert Foss
2021-02-17 11:21 ` [PATCH v5 04/22] media: camss: Add CAMSS_845 camss version Robert Foss
2021-02-20 18:42 ` Andrey Konovalov
2021-02-17 11:21 ` [PATCH v5 05/22] media: camss: Make ISPIF subdevice optional Robert Foss
2021-02-18 19:49 ` Andrey Konovalov
2021-02-17 11:21 ` [PATCH v5 07/22] media: camss: Add support for VFE hardware version Titan 170 Robert Foss
2021-02-20 21:40 ` Andrey Konovalov
2021-02-22 16:37 ` Robert Foss
2021-02-22 17:06 ` Andrey Konovalov
2021-02-22 17:21 ` Robert Foss
2021-02-22 17:24 ` Andrey Konovalov
2021-02-20 21:40 ` Andrey Konovalov
2021-02-17 11:21 ` [PATCH v5 08/22] media: camss: Add missing format identifiers Robert Foss
2021-02-22 16:26 ` Andrey Konovalov
2021-02-23 17:25 ` Robert Foss
2021-02-17 11:21 ` [PATCH v5 09/22] media: camss: Refactor CSID HW version support Robert Foss
2021-02-21 15:15 ` Andrey Konovalov
2021-02-21 17:50 ` Andrey Konovalov
2021-02-22 18:13 ` Robert Foss
2021-02-17 11:21 ` [PATCH v5 10/22] media: camss: Add support for CSID hardware version Titan 170 Robert Foss
2021-02-21 17:14 ` Andrey Konovalov
2021-02-22 17:06 ` Robert Foss
2021-02-17 11:21 ` [PATCH v5 11/22] media: camss: Add support for CSIPHY " Robert Foss
2021-02-21 18:17 ` Andrey Konovalov
2021-02-23 9:36 ` Robert Foss
2021-02-17 11:21 ` [PATCH v5 12/22] media: camss: Remove per VFE power domain toggling Robert Foss
2021-02-22 11:44 ` Andrey Konovalov [this message]
2021-02-24 14:53 ` Robert Foss
2021-02-17 11:21 ` [PATCH v5 13/22] media: camss: Enable SDM845 Robert Foss
2021-02-21 18:32 ` Andrey Konovalov
2021-02-17 11:21 ` [PATCH v5 14/22] dt-bindings: media: camss: Add qcom,msm8916-camss binding Robert Foss
2021-02-17 11:21 ` [PATCH v5 15/22] dt-bindings: media: camss: Add qcom,msm8996-camss binding Robert Foss
2021-02-17 11:21 ` [PATCH v5 16/22] dt-bindings: media: camss: Add qcom,sdm660-camss binding Robert Foss
2021-02-17 11:21 ` [PATCH v5 17/22] dt-bindings: media: camss: Add qcom,sdm845-camss binding Robert Foss
2021-02-17 11:21 ` [PATCH v5 18/22] MAINTAINERS: Change CAMSS documentation to use dtschema bindings Robert Foss
2021-02-17 11:21 ` [PATCH v5 19/22] media: dt-bindings: media: Remove qcom,camss documentation Robert Foss
2021-02-17 11:21 ` [PATCH v5 20/22] arm64: dts: sdm845: Add CAMSS ISP node Robert Foss
2021-02-21 18:39 ` Andrey Konovalov
2021-02-17 11:21 ` [PATCH v5 21/22] arm64: dts: sdm845-db845c: Configure regulators for camss node Robert Foss
2021-02-21 18:39 ` Andrey Konovalov
2021-02-17 11:21 ` [PATCH v5 22/22] arm64: dts: sdm845-db845c: Enable ov8856 sensor and connect to ISP Robert Foss
2021-02-21 18:39 ` Andrey Konovalov
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