[v3,06/10] drm/fb-helper: Initialize fb-helper's preferred BPP in prepare function

Message ID	20230125200415.14123-7-tzimmermann@suse.de (mailing list archive)
State	New, archived
Headers	show Return-Path: <intel-gfx-bounces@lists.freedesktop.org> From: Thomas Zimmermann <tzimmermann@suse.de> To: airlied@gmail.com, daniel@ffwll.ch, maarten.lankhorst@linux.intel.com, mripard@kernel.org, javierm@redhat.com Date: Wed, 25 Jan 2023 21:04:11 +0100 Message-Id: <20230125200415.14123-7-tzimmermann@suse.de> In-Reply-To: <20230125200415.14123-1-tzimmermann@suse.de> References: <20230125200415.14123-1-tzimmermann@suse.de> MIME-Version: 1.0 Content-Transfer-Encoding: 8bit Subject: [Intel-gfx] [PATCH v3 06/10] drm/fb-helper: Initialize fb-helper's preferred BPP in prepare function Precedence: list Cc: linux-samsung-soc@vger.kernel.org, linux-arm-msm@vger.kernel.org, intel-gfx@lists.freedesktop.org, dri-devel@lists.freedesktop.org, amd-gfx@lists.freedesktop.org, Thomas Zimmermann <tzimmermann@suse.de>, linux-tegra@vger.kernel.org, freedreno@lists.freedesktop.org, linux-arm-kernel@lists.infradead.org Errors-To: intel-gfx-bounces@lists.freedesktop.org Sender: "Intel-gfx" <intel-gfx-bounces@lists.freedesktop.org>
Series	drm/fb-helper: Various cleanups \| expand [v3,00/10] drm/fb-helper: Various cleanups [v3,01/10] drm/client: Test for connectors before sending hotplug event [v3,02/10] drm/client: Add hotplug_failed flag [v3,03/10] drm/fb-helper: Introduce drm_fb_helper_unprepare() [v3,04/10] drm/fbdev-generic: Initialize fb-helper structure in generic setup [v3,05/10] drm/fb-helper: Remove preferred_bpp parameter from fbdev internals [v3,06/10] drm/fb-helper: Initialize fb-helper's preferred BPP in prepare function [v3,07/10] drm/fbdev-generic: Minimize hotplug error handling [v3,08/10] drm/fbdev-generic: Minimize client unregistering [v3,09/10] drm/fbdev-generic: Inline clean-up helpers into drm_fbdev_fb_destroy() [v3,10/10] drm/fbdev-generic: Rename struct fb_info 'fbi' to 'info'

diff --git a/drivers/gpu/drm/armada/armada_fbdev.c b/drivers/gpu/drm/armada/armada_fbdev.c index 584cee123bd8..07e410c62b7a 100644 --- a/drivers/gpu/drm/armada/armada_fbdev.c +++ b/drivers/gpu/drm/armada/armada_fbdev.c @@ -129,7 +129,7 @@ int armada_fbdev_init(struct drm_device *dev) priv->fbdev = fbh; - drm_fb_helper_prepare(dev, fbh, &armada_fb_helper_funcs); + drm_fb_helper_prepare(dev, fbh, 32, &armada_fb_helper_funcs); ret = drm_fb_helper_init(dev, fbh); if (ret) { @@ -137,7 +137,7 @@ int armada_fbdev_init(struct drm_device *dev) goto err_fb_helper; } - ret = drm_fb_helper_initial_config(fbh, 32); + ret = drm_fb_helper_initial_config(fbh); if (ret) { DRM_ERROR("failed to set initial config\n"); goto err_fb_setup; diff --git a/drivers/gpu/drm/drm_fb_helper.c b/drivers/gpu/drm/drm_fb_helper.c index 258103d317ac..28c428e9c530 100644 --- a/drivers/gpu/drm/drm_fb_helper.c +++ b/drivers/gpu/drm/drm_fb_helper.c @@ -416,14 +416,30 @@ static void drm_fb_helper_damage_work(struct work_struct *work) * drm_fb_helper_prepare - setup a drm_fb_helper structure * @dev: DRM device * @helper: driver-allocated fbdev helper structure to set up + * @preferred_bpp: Preferred bits per pixel for the device. * @funcs: pointer to structure of functions associate with this helper * * Sets up the bare minimum to make the framebuffer helper usable. This is * useful to implement race-free initialization of the polling helpers. */ void drm_fb_helper_prepare(struct drm_device *dev, struct drm_fb_helper *helper, + unsigned int preferred_bpp, const struct drm_fb_helper_funcs *funcs) { + /* + * Pick a preferred bpp of 32 if no value has been given. This + * will select XRGB8888 for the framebuffer formats. All drivers + * have to support XRGB8888 for backwards compatibility with legacy + * userspace, so it's the safe choice here. + * + * TODO: Replace struct drm_mode_config.preferred_depth and this + * bpp value with a preferred format that is given as struct + * drm_format_info. Then derive all other values from the + * format. + */ + if (!preferred_bpp) + preferred_bpp = 32; + INIT_LIST_HEAD(&helper->kernel_fb_list); spin_lock_init(&helper->damage_lock); INIT_WORK(&helper->resume_work, drm_fb_helper_resume_worker); @@ -432,6 +448,7 @@ void drm_fb_helper_prepare(struct drm_device *dev, struct drm_fb_helper *helper, mutex_init(&helper->lock); helper->funcs = funcs; helper->dev = dev; + helper->preferred_bpp = preferred_bpp; } EXPORT_SYMBOL(drm_fb_helper_prepare); @@ -2183,7 +2200,6 @@ __drm_fb_helper_initial_config_and_unlock(struct drm_fb_helper *fb_helper) /** * drm_fb_helper_initial_config - setup a sane initial connector configuration * @fb_helper: fb_helper device struct - * @bpp_sel: bpp value to use for the framebuffer configuration * * Scans the CRTCs and connectors and tries to put together an initial setup. * At the moment, this is a cloned configuration across all heads with @@ -2221,15 +2237,13 @@ __drm_fb_helper_initial_config_and_unlock(struct drm_fb_helper *fb_helper) * RETURNS: * Zero if everything went ok, nonzero otherwise. */ -int drm_fb_helper_initial_config(struct drm_fb_helper *fb_helper, int bpp_sel) +int drm_fb_helper_initial_config(struct drm_fb_helper *fb_helper) { int ret; if (!drm_fbdev_emulation) return 0; - fb_helper->preferred_bpp = bpp_sel; - mutex_lock(&fb_helper->lock); ret = __drm_fb_helper_initial_config_and_unlock(fb_helper); diff --git a/drivers/gpu/drm/drm_fbdev_generic.c b/drivers/gpu/drm/drm_fbdev_generic.c index 63f66325a8a5..6ae014040df3 100644 --- a/drivers/gpu/drm/drm_fbdev_generic.c +++ b/drivers/gpu/drm/drm_fbdev_generic.c @@ -392,7 +392,7 @@ static int drm_fbdev_client_hotplug(struct drm_client_dev *client) if (!drm_drv_uses_atomic_modeset(dev)) drm_helper_disable_unused_functions(dev); - ret = drm_fb_helper_initial_config(fb_helper, fb_helper->preferred_bpp); + ret = drm_fb_helper_initial_config(fb_helper); if (ret) goto err_cleanup; @@ -454,7 +454,7 @@ void drm_fbdev_generic_setup(struct drm_device *dev, fb_helper = kzalloc(sizeof(*fb_helper), GFP_KERNEL); if (!fb_helper) return; - drm_fb_helper_prepare(dev, fb_helper, &drm_fb_helper_generic_funcs); + drm_fb_helper_prepare(dev, fb_helper, preferred_bpp, &drm_fb_helper_generic_funcs); ret = drm_client_init(dev, &fb_helper->client, "fbdev", &drm_fbdev_client_funcs); if (ret) { @@ -462,21 +462,6 @@ void drm_fbdev_generic_setup(struct drm_device *dev, goto err_drm_client_init; } - /* - * Pick a preferred bpp of 32 if no value has been given. This - * will select XRGB8888 for the framebuffer formats. All drivers - * have to support XRGB8888 for backwards compatibility with legacy - * userspace, so it's the safe choice here. - * - * TODO: Replace struct drm_mode_config.preferred_depth and this - * bpp value with a preferred format that is given as struct - * drm_format_info. Then derive all other values from the - * format. - */ - if (!preferred_bpp) - preferred_bpp = 32; - fb_helper->preferred_bpp = preferred_bpp; - ret = drm_fbdev_client_hotplug(&fb_helper->client); if (ret) drm_dbg_kms(dev, "client hotplug ret=%d\n", ret); diff --git a/drivers/gpu/drm/exynos/exynos_drm_fbdev.c b/drivers/gpu/drm/exynos/exynos_drm_fbdev.c index 55c92372fca0..b89e33af8da8 100644 --- a/drivers/gpu/drm/exynos/exynos_drm_fbdev.c +++ b/drivers/gpu/drm/exynos/exynos_drm_fbdev.c @@ -163,7 +163,7 @@ int exynos_drm_fbdev_init(struct drm_device *dev) private->fb_helper = helper = &fbdev->drm_fb_helper; - drm_fb_helper_prepare(dev, helper, &exynos_drm_fb_helper_funcs); + drm_fb_helper_prepare(dev, helper, PREFERRED_BPP, &exynos_drm_fb_helper_funcs); ret = drm_fb_helper_init(dev, helper); if (ret < 0) { @@ -172,7 +172,7 @@ int exynos_drm_fbdev_init(struct drm_device *dev) goto err_init; } - ret = drm_fb_helper_initial_config(helper, PREFERRED_BPP); + ret = drm_fb_helper_initial_config(helper); if (ret < 0) { DRM_DEV_ERROR(dev->dev, "failed to set up hw configuration.\n"); diff --git a/drivers/gpu/drm/gma500/framebuffer.c b/drivers/gpu/drm/gma500/framebuffer.c index 52ae3ade9a61..1f04c07ee180 100644 --- a/drivers/gpu/drm/gma500/framebuffer.c +++ b/drivers/gpu/drm/gma500/framebuffer.c @@ -409,7 +409,7 @@ int psb_fbdev_init(struct drm_device *dev) dev_priv->fb_helper = fb_helper; - drm_fb_helper_prepare(dev, fb_helper, &psb_fb_helper_funcs); + drm_fb_helper_prepare(dev, fb_helper, 32, &psb_fb_helper_funcs); ret = drm_fb_helper_init(dev, fb_helper); if (ret) @@ -418,7 +418,7 @@ int psb_fbdev_init(struct drm_device *dev) /* disable all the possible outputs/crtcs before entering KMS mode */ drm_helper_disable_unused_functions(dev); - ret = drm_fb_helper_initial_config(fb_helper, 32); + ret = drm_fb_helper_initial_config(fb_helper); if (ret) goto fini; diff --git a/drivers/gpu/drm/i915/display/intel_fbdev.c b/drivers/gpu/drm/i915/display/intel_fbdev.c index 19f3b5d92a55..ed197db5861d 100644 --- a/drivers/gpu/drm/i915/display/intel_fbdev.c +++ b/drivers/gpu/drm/i915/display/intel_fbdev.c @@ -520,10 +520,12 @@ int intel_fbdev_init(struct drm_device *dev) return -ENOMEM; mutex_init(&ifbdev->hpd_lock); - drm_fb_helper_prepare(dev, &ifbdev->helper, &intel_fb_helper_funcs); + drm_fb_helper_prepare(dev, &ifbdev->helper, 32, &intel_fb_helper_funcs); - if (!intel_fbdev_init_bios(dev, ifbdev)) - ifbdev->preferred_bpp = 32; + if (intel_fbdev_init_bios(dev, ifbdev)) + ifbdev->helper.preferred_bpp = ifbdev->preferred_bpp; + else + ifbdev->preferred_bpp = ifbdev->helper.preferred_bpp; ret = drm_fb_helper_init(dev, &ifbdev->helper); if (ret) { @@ -542,8 +544,7 @@ static void intel_fbdev_initial_config(void *data, async_cookie_t cookie) struct intel_fbdev *ifbdev = data; /* Due to peculiar init order wrt to hpd handling this is separate. */ - if (drm_fb_helper_initial_config(&ifbdev->helper, - ifbdev->preferred_bpp)) + if (drm_fb_helper_initial_config(&ifbdev->helper)) intel_fbdev_unregister(to_i915(ifbdev->helper.dev)); } diff --git a/drivers/gpu/drm/msm/msm_fbdev.c b/drivers/gpu/drm/msm/msm_fbdev.c index 31e1e30cb52a..915b213f3a5c 100644 --- a/drivers/gpu/drm/msm/msm_fbdev.c +++ b/drivers/gpu/drm/msm/msm_fbdev.c @@ -146,7 +146,7 @@ struct drm_fb_helper *msm_fbdev_init(struct drm_device *dev) helper = &fbdev->base; - drm_fb_helper_prepare(dev, helper, &msm_fb_helper_funcs); + drm_fb_helper_prepare(dev, helper, 32, &msm_fb_helper_funcs); ret = drm_fb_helper_init(dev, helper); if (ret) { @@ -159,7 +159,7 @@ struct drm_fb_helper *msm_fbdev_init(struct drm_device *dev) if (ret) goto fini; - ret = drm_fb_helper_initial_config(helper, 32); + ret = drm_fb_helper_initial_config(helper); if (ret) goto fini; diff --git a/drivers/gpu/drm/omapdrm/omap_fbdev.c b/drivers/gpu/drm/omapdrm/omap_fbdev.c index 98d8758048fc..fc5f52d567c6 100644 --- a/drivers/gpu/drm/omapdrm/omap_fbdev.c +++ b/drivers/gpu/drm/omapdrm/omap_fbdev.c @@ -239,13 +239,13 @@ void omap_fbdev_init(struct drm_device *dev) helper = &fbdev->base; - drm_fb_helper_prepare(dev, helper, &omap_fb_helper_funcs); + drm_fb_helper_prepare(dev, helper, 32, &omap_fb_helper_funcs); ret = drm_fb_helper_init(dev, helper); if (ret) goto fail; - ret = drm_fb_helper_initial_config(helper, 32); + ret = drm_fb_helper_initial_config(helper); if (ret) goto fini; diff --git a/drivers/gpu/drm/radeon/radeon_fb.c b/drivers/gpu/drm/radeon/radeon_fb.c index fe4087bfdb3c..6e5eed0e157c 100644 --- a/drivers/gpu/drm/radeon/radeon_fb.c +++ b/drivers/gpu/drm/radeon/radeon_fb.c @@ -348,7 +348,7 @@ int radeon_fbdev_init(struct radeon_device *rdev) rfbdev->rdev = rdev; rdev->mode_info.rfbdev = rfbdev; - drm_fb_helper_prepare(rdev->ddev, &rfbdev->helper, + drm_fb_helper_prepare(rdev->ddev, &rfbdev->helper, bpp_sel, &radeon_fb_helper_funcs); ret = drm_fb_helper_init(rdev->ddev, &rfbdev->helper); @@ -358,7 +358,7 @@ int radeon_fbdev_init(struct radeon_device *rdev) /* disable all the possible outputs/crtcs before entering KMS mode */ drm_helper_disable_unused_functions(rdev->ddev); - ret = drm_fb_helper_initial_config(&rfbdev->helper, bpp_sel); + ret = drm_fb_helper_initial_config(&rfbdev->helper); if (ret) goto fini; diff --git a/drivers/gpu/drm/tegra/fb.c b/drivers/gpu/drm/tegra/fb.c index a900300ae5bd..153c39c32c71 100644 --- a/drivers/gpu/drm/tegra/fb.c +++ b/drivers/gpu/drm/tegra/fb.c @@ -308,7 +308,7 @@ static struct tegra_fbdev *tegra_fbdev_create(struct drm_device *drm) return ERR_PTR(-ENOMEM); } - drm_fb_helper_prepare(drm, &fbdev->base, &tegra_fb_helper_funcs); + drm_fb_helper_prepare(drm, &fbdev->base, 32, &tegra_fb_helper_funcs); return fbdev; } @@ -319,7 +319,6 @@ static void tegra_fbdev_free(struct tegra_fbdev *fbdev) } static int tegra_fbdev_init(struct tegra_fbdev *fbdev, - unsigned int preferred_bpp, unsigned int num_crtc, unsigned int max_connectors) { @@ -333,7 +332,7 @@ static int tegra_fbdev_init(struct tegra_fbdev *fbdev, return err; } - err = drm_fb_helper_initial_config(&fbdev->base, preferred_bpp); + err = drm_fb_helper_initial_config(&fbdev->base); if (err < 0) { dev_err(drm->dev, "failed to set initial configuration: %d\n", err); @@ -396,7 +395,7 @@ int tegra_drm_fb_init(struct drm_device *drm) struct tegra_drm *tegra = drm->dev_private; int err; - err = tegra_fbdev_init(tegra->fbdev, 32, drm->mode_config.num_crtc, + err = tegra_fbdev_init(tegra->fbdev, drm->mode_config.num_crtc, drm->mode_config.num_connector); if (err < 0) return err; diff --git a/include/drm/drm_fb_helper.h b/include/drm/drm_fb_helper.h index 39710c570a04..93bc8f29f5a4 100644 --- a/include/drm/drm_fb_helper.h +++ b/include/drm/drm_fb_helper.h @@ -229,6 +229,7 @@ drm_fb_helper_from_client(struct drm_client_dev *client) #ifdef CONFIG_DRM_FBDEV_EMULATION void drm_fb_helper_prepare(struct drm_device *dev, struct drm_fb_helper *helper, + unsigned int preferred_bpp, const struct drm_fb_helper_funcs *funcs); void drm_fb_helper_unprepare(struct drm_fb_helper *fb_helper); int drm_fb_helper_init(struct drm_device *dev, struct drm_fb_helper *helper); @@ -284,7 +285,7 @@ int drm_fb_helper_ioctl(struct fb_info *info, unsigned int cmd, unsigned long arg); int drm_fb_helper_hotplug_event(struct drm_fb_helper *fb_helper); -int drm_fb_helper_initial_config(struct drm_fb_helper *fb_helper, int bpp_sel); +int drm_fb_helper_initial_config(struct drm_fb_helper *fb_helper); int drm_fb_helper_debug_enter(struct fb_info *info); int drm_fb_helper_debug_leave(struct fb_info *info); @@ -292,8 +293,9 @@ void drm_fb_helper_lastclose(struct drm_device *dev); void drm_fb_helper_output_poll_changed(struct drm_device *dev); #else static inline void drm_fb_helper_prepare(struct drm_device *dev, - struct drm_fb_helper *helper, - const struct drm_fb_helper_funcs *funcs) + struct drm_fb_helper *helper, + unsigned int preferred_bpp, + const struct drm_fb_helper_funcs *funcs) { } @@ -455,8 +457,7 @@ static inline int drm_fb_helper_hotplug_event(struct drm_fb_helper *fb_helper) return 0; } -static inline int drm_fb_helper_initial_config(struct drm_fb_helper *fb_helper, - int bpp_sel) +static inline int drm_fb_helper_initial_config(struct drm_fb_helper *fb_helper) { return 0; }

[v3,06/10] drm/fb-helper: Initialize fb-helper's preferred BPP in prepare function

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