Hi, This is a duplicated patchset and please ignore this. The latest changes for power management have been committed at: https://patchwork.freedesktop.org/series/62181/ Sorry for the inconvenience. Best regards, Lowry On Fri, Jun 21, 2019 at 03:57:29PM +0800, Lowry Li (Arm Technology China) wrote: > From: "Lowry Li (Arm Technology China)" <Lowry.Li@xxxxxxx> > > Adds system power management support in KMS kernel driver. > > Depends on: > - https://patchwork.freedesktop.org/series/61650/ > - https://patchwork.freedesktop.org/series/60083/ > - https://patchwork.freedesktop.org/series/61647/ > > Changes since v1: > Since we have unified mclk/pclk/pipeline->aclk to one mclk, which will > be turned on/off when crtc atomic enable/disable, removed runtime power > management. > Adds to disable the aclk when register access finished. > > Changes since v2: > Removes run time get/put related flow. > > Signed-off-by: Lowry Li (Arm Technology China) <lowry.li@xxxxxxx> > --- > drivers/gpu/drm/arm/display/komeda/komeda_crtc.c | 1 - > drivers/gpu/drm/arm/display/komeda/komeda_dev.c | 63 +++++++++++++++++++++--- > drivers/gpu/drm/arm/display/komeda/komeda_dev.h | 2 + > drivers/gpu/drm/arm/display/komeda/komeda_drv.c | 35 +++++++++++-- > 4 files changed, 91 insertions(+), 10 deletions(-) > > diff --git a/drivers/gpu/drm/arm/display/komeda/komeda_crtc.c b/drivers/gpu/drm/arm/display/komeda/komeda_crtc.c > index cafb445..d14e7f3 100644 > --- a/drivers/gpu/drm/arm/display/komeda/komeda_crtc.c > +++ b/drivers/gpu/drm/arm/display/komeda/komeda_crtc.c > @@ -5,7 +5,6 @@ > * > */ > #include <linux/clk.h> > -#include <linux/pm_runtime.h> > #include <linux/spinlock.h> > > #include <drm/drm_atomic.h> > diff --git a/drivers/gpu/drm/arm/display/komeda/komeda_dev.c b/drivers/gpu/drm/arm/display/komeda/komeda_dev.c > index e1aa58e..c9837dc 100644 > --- a/drivers/gpu/drm/arm/display/komeda/komeda_dev.c > +++ b/drivers/gpu/drm/arm/display/komeda/komeda_dev.c > @@ -209,7 +209,7 @@ struct komeda_dev *komeda_dev_create(struct device *dev) > product->product_id, > MALIDP_CORE_ID_PRODUCT_ID(mdev->chip.core_id)); > err = -ENODEV; > - goto err_cleanup; > + goto disable_clk; > } > > DRM_INFO("Found ARM Mali-D%x version r%dp%d\n", > @@ -222,19 +222,19 @@ struct komeda_dev *komeda_dev_create(struct device *dev) > err = mdev->funcs->enum_resources(mdev); > if (err) { > DRM_ERROR("enumerate display resource failed.\n"); > - goto err_cleanup; > + goto disable_clk; > } > > err = komeda_parse_dt(dev, mdev); > if (err) { > DRM_ERROR("parse device tree failed.\n"); > - goto err_cleanup; > + goto disable_clk; > } > > err = komeda_assemble_pipelines(mdev); > if (err) { > DRM_ERROR("assemble display pipelines failed.\n"); > - goto err_cleanup; > + goto disable_clk; > } > > dev->dma_parms = &mdev->dma_parms; > @@ -247,11 +247,13 @@ struct komeda_dev *komeda_dev_create(struct device *dev) > if (mdev->iommu && mdev->funcs->connect_iommu) { > err = mdev->funcs->connect_iommu(mdev); > if (err) { > - mdev->iommu = NULL; > - goto err_cleanup; > + DRM_ERROR("connect iommu failed.\n"); > + goto disable_clk; > } > } > > + clk_disable_unprepare(mdev->aclk); > + > err = sysfs_create_group(&dev->kobj, &komeda_sysfs_attr_group); > if (err) { > DRM_ERROR("create sysfs group failed.\n"); > @@ -264,6 +266,8 @@ struct komeda_dev *komeda_dev_create(struct device *dev) > > return mdev; > > +disable_clk: > + clk_disable_unprepare(mdev->aclk); > err_cleanup: > komeda_dev_destroy(mdev); > return ERR_PTR(err); > @@ -281,6 +285,9 @@ void komeda_dev_destroy(struct komeda_dev *mdev) > debugfs_remove_recursive(mdev->debugfs_root); > #endif > > + if (mdev->aclk) > + clk_prepare_enable(mdev->aclk); > + > if (mdev->iommu && mdev->funcs->disconnect_iommu) > mdev->funcs->disconnect_iommu(mdev); > mdev->iommu = NULL; > @@ -308,3 +315,47 @@ void komeda_dev_destroy(struct komeda_dev *mdev) > > devm_kfree(dev, mdev); > } > + > +int komeda_dev_resume(struct komeda_dev *mdev) > +{ > + int ret = 0; > + > + clk_prepare_enable(mdev->aclk); > + > + if (mdev->iommu && mdev->funcs->connect_iommu) { > + ret = mdev->funcs->connect_iommu(mdev); > + if (ret < 0) { > + DRM_ERROR("connect iommu failed.\n"); > + goto disable_clk; > + } > + } > + > + ret = mdev->funcs->enable_irq(mdev); > + > +disable_clk: > + clk_disable_unprepare(mdev->aclk); > + > + return ret; > +} > + > +int komeda_dev_suspend(struct komeda_dev *mdev) > +{ > + int ret = 0; > + > + clk_prepare_enable(mdev->aclk); > + > + if (mdev->iommu && mdev->funcs->disconnect_iommu) { > + ret = mdev->funcs->disconnect_iommu(mdev); > + if (ret < 0) { > + DRM_ERROR("disconnect iommu failed.\n"); > + goto disable_clk; > + } > + } > + > + ret = mdev->funcs->disable_irq(mdev); > + > +disable_clk: > + clk_disable_unprepare(mdev->aclk); > + > + return ret; > +} > diff --git a/drivers/gpu/drm/arm/display/komeda/komeda_dev.h b/drivers/gpu/drm/arm/display/komeda/komeda_dev.h > index d1c86b6..096f9f7 100644 > --- a/drivers/gpu/drm/arm/display/komeda/komeda_dev.h > +++ b/drivers/gpu/drm/arm/display/komeda/komeda_dev.h > @@ -207,4 +207,6 @@ struct komeda_dev { > > struct komeda_dev *dev_to_mdev(struct device *dev); > > +int komeda_dev_resume(struct komeda_dev *mdev); > +int komeda_dev_suspend(struct komeda_dev *mdev); > #endif /*_KOMEDA_DEV_H_*/ > diff --git a/drivers/gpu/drm/arm/display/komeda/komeda_drv.c b/drivers/gpu/drm/arm/display/komeda/komeda_drv.c > index cfa5068..52b2a94 100644 > --- a/drivers/gpu/drm/arm/display/komeda/komeda_drv.c > +++ b/drivers/gpu/drm/arm/display/komeda/komeda_drv.c > @@ -32,6 +32,7 @@ static void komeda_unbind(struct device *dev) > return; > > komeda_kms_detach(mdrv->kms); > + > komeda_dev_destroy(mdrv->mdev); > > dev_set_drvdata(dev, NULL); > @@ -52,6 +53,7 @@ static int komeda_bind(struct device *dev) > err = PTR_ERR(mdrv->mdev); > goto free_mdrv; > } > + dev_set_drvdata(dev, mdrv); > > mdrv->kms = komeda_kms_attach(mdrv->mdev); > if (IS_ERR(mdrv->kms)) { > @@ -59,8 +61,6 @@ static int komeda_bind(struct device *dev) > goto destroy_mdev; > } > > - dev_set_drvdata(dev, mdrv); > - > return 0; > > destroy_mdev: > @@ -134,13 +134,42 @@ static int komeda_platform_remove(struct platform_device *pdev) > > MODULE_DEVICE_TABLE(of, komeda_of_match); > > +static int __maybe_unused komeda_pm_suspend(struct device *dev) > +{ > + struct komeda_drv *mdrv = dev_get_drvdata(dev); > + struct drm_device *drm = &mdrv->kms->base; > + int res; > + > + dev_info(dev, "%s\n", __func__); > + res = drm_mode_config_helper_suspend(drm); > + > + komeda_dev_suspend(mdrv->mdev); > + > + return res; > +} > + > +static int __maybe_unused komeda_pm_resume(struct device *dev) > +{ > + struct komeda_drv *mdrv = dev_get_drvdata(dev); > + struct drm_device *drm = &mdrv->kms->base; > + > + dev_info(dev, "%s\n", __func__); > + komeda_dev_resume(mdrv->mdev); > + > + return drm_mode_config_helper_resume(drm); > +} > + > +static const struct dev_pm_ops komeda_pm_ops = { > + SET_SYSTEM_SLEEP_PM_OPS(komeda_pm_suspend, komeda_pm_resume) > +}; > + > static struct platform_driver komeda_platform_driver = { > .probe = komeda_platform_probe, > .remove = komeda_platform_remove, > .driver = { > .name = "komeda", > .of_match_table = komeda_of_match, > - .pm = NULL, > + .pm = &komeda_pm_ops, > }, > }; > > -- > 1.9.1 > -- Regards, Lowry _______________________________________________ dri-devel mailing list dri-devel@xxxxxxxxxxxxxxxxxxxxx https://lists.freedesktop.org/mailman/listinfo/dri-devel
