Hi Inki, To test it properly I have to fix init/remove bugs [1]. Of course these bugs were not introduced by this patch, but they prevented some basic tests.
[1]: http://permalink.gmane.org/gmane.linux.kernel.samsung-soc/37266 I have tested successfully your patch with trats and universal_c210 boards. Few additional comments below. On 09/01/2014 02:19 PM, Inki Dae wrote: > Update Exynos's DRM driver to use component match support rater than > add_components. > > Signed-off-by: Inki Dae <inki.dae at samsung.com> > --- > drivers/gpu/drm/exynos/exynos_drm_drv.c | 40 > ++++++++++++++----------------- > 1 file changed, 18 insertions(+), 22 deletions(-) > > diff --git a/drivers/gpu/drm/exynos/exynos_drm_drv.c > b/drivers/gpu/drm/exynos/exynos_drm_drv.c > index feee991..dae62c2 100644 > --- a/drivers/gpu/drm/exynos/exynos_drm_drv.c > +++ b/drivers/gpu/drm/exynos/exynos_drm_drv.c > @@ -503,16 +503,15 @@ static int compare_of(struct device *dev, void *data) > return dev == (struct device *)data; > } Nitpick. This is not a part of this patch but compare_of suggests it compares OF nodes but this function compares devices, maybe compare_dev would be better. > > -static int exynos_drm_add_components(struct device *dev, struct master *m) > +static struct component_match *exynos_drm_match_add(struct device *dev) > { > + struct component_match *match = NULL; > struct component_dev *cdev; > unsigned int attach_cnt = 0; > > mutex_lock(&drm_component_lock); > > list_for_each_entry(cdev, &drm_component_list, list) { > - int ret; > - > /* > * Add components to master only in case that crtc and > * encoder/connector device objects exist. > @@ -527,16 +526,10 @@ static int exynos_drm_add_components(struct device > *dev, struct master *m) > /* > * fimd and dpi modules have same device object so add > * only crtc device object in this case. > - * > - * TODO. if dpi module follows driver-model driver then > - * below codes can be removed. > */ > if (cdev->crtc_dev == cdev->conn_dev) { > - ret = component_master_add_child(m, compare_of, > - cdev->crtc_dev); > - if (ret < 0) > - return ret; > - > + component_match_add(dev, &match, compare_of, > + cdev->crtc_dev); > goto out_lock; > } > > @@ -546,11 +539,8 @@ static int exynos_drm_add_components(struct device *dev, > struct master *m) > * connector/encoder need pipe number of crtc when they > * are created. > */ > - ret = component_master_add_child(m, compare_of, cdev->crtc_dev); > - ret |= component_master_add_child(m, compare_of, > - cdev->conn_dev); > - if (ret < 0) > - return ret; > + component_match_add(dev, &match, compare_of, cdev->crtc_dev); > + component_match_add(dev, &match, compare_of, cdev->conn_dev); > > out_lock: > mutex_lock(&drm_component_lock); > @@ -558,7 +548,7 @@ out_lock: > > mutex_unlock(&drm_component_lock); > > - return attach_cnt ? 0 : -ENODEV; > + return attach_cnt ? match : ERR_PTR(-EPROBE_DEFER); > } > > static int exynos_drm_bind(struct device *dev) > @@ -572,13 +562,13 @@ static void exynos_drm_unbind(struct device *dev) > } > > static const struct component_master_ops exynos_drm_ops = { > - .add_components = exynos_drm_add_components, > .bind = exynos_drm_bind, > .unbind = exynos_drm_unbind, > }; > > static int exynos_drm_platform_probe(struct platform_device *pdev) > { > + struct component_match *match; > int ret; > > pdev->dev.coherent_dma_mask = DMA_BIT_MASK(32); > @@ -645,13 +635,19 @@ static int exynos_drm_platform_probe(struct > platform_device *pdev) > goto err_unregister_ipp_drv; > #endif > > - ret = component_master_add(&pdev->dev, &exynos_drm_ops); > - if (ret < 0) > - DRM_DEBUG_KMS("re-tried by last sub driver probed later.\n"); > + match = exynos_drm_match_add(&pdev->dev); > + if (IS_ERR(match)) { > + ret = PTR_ERR(match); > + goto err_unregister_ipp_dev; > + } > > - return 0; > + return component_master_add_with_match(&pdev->dev, &exynos_drm_ops, > + match); In case component_master_add_with_match fails there will be no cleanup - platform devices and drivers will not be removed. > + > +err_unregister_ipp_dev: > > #ifdef CONFIG_DRM_EXYNOS_IPP > + exynos_platform_device_ipp_unregister(); It should not be a part of this patch. Regards Andrzej > err_unregister_ipp_drv: > platform_driver_unregister(&ipp_driver); > err_unregister_gsc_drv: >
