From 35bd71dd1c161e6e89b21138e01e8c04c6347716 Mon Sep 17 00:00:00 2001 From: Daniel Vetter Date: Mon, 18 Nov 2019 11:35:23 +0100 Subject: drm/tegra: Delete host1x_bo_ops->k(un)map It doesn't have any callers anymore. Aside: The ->mmap/munmap hooks have a bit a confusing name, they don't do userspace mmaps, but a kernel vmap. I think most places use vmap for this, except ttm, which uses kmap for vmap for added confusion. mmap seems entirely for userspace mappings set up through mmap(2) syscall. Reviewed-by: Thierry Reding Tested-by: Thierry Reding Acked-by: Sumit Semwal Signed-off-by: Daniel Vetter Cc: Thierry Reding Cc: Jonathan Hunter Cc: linux-tegra@vger.kernel.org Link: https://patchwork.freedesktop.org/patch/msgid/20191118103536.17675-3-daniel.vetter@ffwll.ch --- drivers/gpu/drm/tegra/gem.c | 28 ---------------------------- 1 file changed, 28 deletions(-) (limited to 'drivers/gpu/drm/tegra') diff --git a/drivers/gpu/drm/tegra/gem.c b/drivers/gpu/drm/tegra/gem.c index fb7667c8dd4c..0c55df20e0ef 100644 --- a/drivers/gpu/drm/tegra/gem.c +++ b/drivers/gpu/drm/tegra/gem.c @@ -65,32 +65,6 @@ static void tegra_bo_munmap(struct host1x_bo *bo, void *addr) vunmap(addr); } -static void *tegra_bo_kmap(struct host1x_bo *bo, unsigned int page) -{ - struct tegra_bo *obj = host1x_to_tegra_bo(bo); - - if (obj->vaddr) - return obj->vaddr + page * PAGE_SIZE; - else if (obj->gem.import_attach) - return dma_buf_kmap(obj->gem.import_attach->dmabuf, page); - else - return vmap(obj->pages + page, 1, VM_MAP, - pgprot_writecombine(PAGE_KERNEL)); -} - -static void tegra_bo_kunmap(struct host1x_bo *bo, unsigned int page, - void *addr) -{ - struct tegra_bo *obj = host1x_to_tegra_bo(bo); - - if (obj->vaddr) - return; - else if (obj->gem.import_attach) - dma_buf_kunmap(obj->gem.import_attach->dmabuf, page, addr); - else - vunmap(addr); -} - static struct host1x_bo *tegra_bo_get(struct host1x_bo *bo) { struct tegra_bo *obj = host1x_to_tegra_bo(bo); @@ -107,8 +81,6 @@ static const struct host1x_bo_ops tegra_bo_ops = { .unpin = tegra_bo_unpin, .mmap = tegra_bo_mmap, .munmap = tegra_bo_munmap, - .kmap = tegra_bo_kmap, - .kunmap = tegra_bo_kunmap, }; static int tegra_bo_iommu_map(struct tegra_drm *tegra, struct tegra_bo *bo) -- cgit v1.2.3 From 7195cf427b6822a40210f5ab1078aecaa5aaea8a Mon Sep 17 00:00:00 2001 From: Daniel Vetter Date: Mon, 18 Nov 2019 11:35:29 +0100 Subject: drm/tegra: Remove dma_buf->k(un)map No in-tree users left. Reviewed-by: Thierry Reding Tested-by: Thierry Reding Acked-by: Sumit Semwal Signed-off-by: Daniel Vetter Cc: Thierry Reding Cc: Jonathan Hunter Cc: linux-tegra@vger.kernel.org Link: https://patchwork.freedesktop.org/patch/msgid/20191118103536.17675-9-daniel.vetter@ffwll.ch --- drivers/gpu/drm/tegra/gem.c | 12 ------------ 1 file changed, 12 deletions(-) (limited to 'drivers/gpu/drm/tegra') diff --git a/drivers/gpu/drm/tegra/gem.c b/drivers/gpu/drm/tegra/gem.c index 0c55df20e0ef..d266b66c1292 100644 --- a/drivers/gpu/drm/tegra/gem.c +++ b/drivers/gpu/drm/tegra/gem.c @@ -554,16 +554,6 @@ static int tegra_gem_prime_end_cpu_access(struct dma_buf *buf, return 0; } -static void *tegra_gem_prime_kmap(struct dma_buf *buf, unsigned long page) -{ - return NULL; -} - -static void tegra_gem_prime_kunmap(struct dma_buf *buf, unsigned long page, - void *addr) -{ -} - static int tegra_gem_prime_mmap(struct dma_buf *buf, struct vm_area_struct *vma) { struct drm_gem_object *gem = buf->priv; @@ -594,8 +584,6 @@ static const struct dma_buf_ops tegra_gem_prime_dmabuf_ops = { .release = tegra_gem_prime_release, .begin_cpu_access = tegra_gem_prime_begin_cpu_access, .end_cpu_access = tegra_gem_prime_end_cpu_access, - .map = tegra_gem_prime_kmap, - .unmap = tegra_gem_prime_kunmap, .mmap = tegra_gem_prime_mmap, .vmap = tegra_gem_prime_vmap, .vunmap = tegra_gem_prime_vunmap, -- cgit v1.2.3 From de2501381470f7374cd502c239eecf8a3f67f65f Mon Sep 17 00:00:00 2001 From: Sam Ravnborg Date: Sun, 4 Aug 2019 22:16:30 +0200 Subject: drm/tegra: fix opencoded use of drm_panel_* Use the drm_panel_get_modes function. Signed-off-by: Sam Ravnborg Reviewed-by: Emil Velikov Cc: Thierry Reding Cc: Jonathan Hunter Cc: linux-tegra@vger.kernel.org Link: https://patchwork.freedesktop.org/patch/msgid/20190804201637.1240-10-sam@ravnborg.org --- drivers/gpu/drm/tegra/output.c | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-) (limited to 'drivers/gpu/drm/tegra') diff --git a/drivers/gpu/drm/tegra/output.c b/drivers/gpu/drm/tegra/output.c index bdcaa4c7168c..5bdbf9ffcda1 100644 --- a/drivers/gpu/drm/tegra/output.c +++ b/drivers/gpu/drm/tegra/output.c @@ -23,7 +23,7 @@ int tegra_output_connector_get_modes(struct drm_connector *connector) * ignore any other means of obtaining a mode. */ if (output->panel) { - err = output->panel->funcs->get_modes(output->panel); + err = drm_panel_get_modes(output->panel); if (err > 0) return err; } -- cgit v1.2.3 From b6ff753a0ca0d209a71a6aa53ac38c53c540f2ee Mon Sep 17 00:00:00 2001 From: Jani Nikula Date: Tue, 3 Dec 2019 18:38:48 +0200 Subject: drm: constify fb ops across all drivers Now that the fbops member of struct fb_info is const, we can start making the ops const as well. Cc: dri-devel@lists.freedesktop.org Reviewed-by: Daniel Vetter Signed-off-by: Jani Nikula Link: https://patchwork.freedesktop.org/patch/msgid/59b43629ac60031c5bbf961d8c49695019bc9c6f.1575390740.git.jani.nikula@intel.com --- drivers/gpu/drm/amd/amdgpu/amdgpu_fb.c | 2 +- drivers/gpu/drm/armada/armada_fbdev.c | 2 +- drivers/gpu/drm/drm_fb_helper.c | 2 +- drivers/gpu/drm/exynos/exynos_drm_fbdev.c | 2 +- drivers/gpu/drm/hisilicon/hibmc/hibmc_drm_fbdev.c | 2 +- drivers/gpu/drm/i915/display/intel_fbdev.c | 2 +- drivers/gpu/drm/msm/msm_fbdev.c | 2 +- drivers/gpu/drm/nouveau/nouveau_fbcon.c | 4 ++-- drivers/gpu/drm/omapdrm/omap_fbdev.c | 2 +- drivers/gpu/drm/radeon/radeon_fb.c | 2 +- drivers/gpu/drm/rockchip/rockchip_drm_fbdev.c | 2 +- drivers/gpu/drm/tegra/fb.c | 2 +- drivers/gpu/drm/vmwgfx/vmwgfx_fb.c | 2 +- 13 files changed, 14 insertions(+), 14 deletions(-) (limited to 'drivers/gpu/drm/tegra') diff --git a/drivers/gpu/drm/amd/amdgpu/amdgpu_fb.c b/drivers/gpu/drm/amd/amdgpu/amdgpu_fb.c index 143753d237e7..2672dc64a310 100644 --- a/drivers/gpu/drm/amd/amdgpu/amdgpu_fb.c +++ b/drivers/gpu/drm/amd/amdgpu/amdgpu_fb.c @@ -69,7 +69,7 @@ amdgpufb_release(struct fb_info *info, int user) return 0; } -static struct fb_ops amdgpufb_ops = { +static const struct fb_ops amdgpufb_ops = { .owner = THIS_MODULE, DRM_FB_HELPER_DEFAULT_OPS, .fb_open = amdgpufb_open, diff --git a/drivers/gpu/drm/armada/armada_fbdev.c b/drivers/gpu/drm/armada/armada_fbdev.c index 090cc0d699ae..ac8a78bfda03 100644 --- a/drivers/gpu/drm/armada/armada_fbdev.c +++ b/drivers/gpu/drm/armada/armada_fbdev.c @@ -16,7 +16,7 @@ #include "armada_fb.h" #include "armada_gem.h" -static /*const*/ struct fb_ops armada_fb_ops = { +static const struct fb_ops armada_fb_ops = { .owner = THIS_MODULE, DRM_FB_HELPER_DEFAULT_OPS, .fb_fillrect = drm_fb_helper_cfb_fillrect, diff --git a/drivers/gpu/drm/drm_fb_helper.c b/drivers/gpu/drm/drm_fb_helper.c index 1751bb9ee8d8..fb9bff0f4581 100644 --- a/drivers/gpu/drm/drm_fb_helper.c +++ b/drivers/gpu/drm/drm_fb_helper.c @@ -1997,7 +1997,7 @@ static int drm_fbdev_fb_mmap(struct fb_info *info, struct vm_area_struct *vma) return -ENODEV; } -static struct fb_ops drm_fbdev_fb_ops = { +static const struct fb_ops drm_fbdev_fb_ops = { .owner = THIS_MODULE, DRM_FB_HELPER_DEFAULT_OPS, .fb_open = drm_fbdev_fb_open, diff --git a/drivers/gpu/drm/exynos/exynos_drm_fbdev.c b/drivers/gpu/drm/exynos/exynos_drm_fbdev.c index b0877b97291c..647a1fd1d815 100644 --- a/drivers/gpu/drm/exynos/exynos_drm_fbdev.c +++ b/drivers/gpu/drm/exynos/exynos_drm_fbdev.c @@ -60,7 +60,7 @@ static int exynos_drm_fb_mmap(struct fb_info *info, return 0; } -static struct fb_ops exynos_drm_fb_ops = { +static const struct fb_ops exynos_drm_fb_ops = { .owner = THIS_MODULE, DRM_FB_HELPER_DEFAULT_OPS, .fb_mmap = exynos_drm_fb_mmap, diff --git a/drivers/gpu/drm/hisilicon/hibmc/hibmc_drm_fbdev.c b/drivers/gpu/drm/hisilicon/hibmc/hibmc_drm_fbdev.c index b4c1cea051e8..1d15560ccb6e 100644 --- a/drivers/gpu/drm/hisilicon/hibmc/hibmc_drm_fbdev.c +++ b/drivers/gpu/drm/hisilicon/hibmc/hibmc_drm_fbdev.c @@ -38,7 +38,7 @@ static int hibmcfb_create_object( return ret; } -static struct fb_ops hibmc_drm_fb_ops = { +static const struct fb_ops hibmc_drm_fb_ops = { .owner = THIS_MODULE, .fb_check_var = drm_fb_helper_check_var, .fb_set_par = drm_fb_helper_set_par, diff --git a/drivers/gpu/drm/i915/display/intel_fbdev.c b/drivers/gpu/drm/i915/display/intel_fbdev.c index 3d1061470e76..481ef97c8af1 100644 --- a/drivers/gpu/drm/i915/display/intel_fbdev.c +++ b/drivers/gpu/drm/i915/display/intel_fbdev.c @@ -100,7 +100,7 @@ static int intel_fbdev_pan_display(struct fb_var_screeninfo *var, return ret; } -static struct fb_ops intelfb_ops = { +static const struct fb_ops intelfb_ops = { .owner = THIS_MODULE, DRM_FB_HELPER_DEFAULT_OPS, .fb_set_par = intel_fbdev_set_par, diff --git a/drivers/gpu/drm/msm/msm_fbdev.c b/drivers/gpu/drm/msm/msm_fbdev.c index cff198b2f470..db48867df47d 100644 --- a/drivers/gpu/drm/msm/msm_fbdev.c +++ b/drivers/gpu/drm/msm/msm_fbdev.c @@ -26,7 +26,7 @@ struct msm_fbdev { struct drm_framebuffer *fb; }; -static struct fb_ops msm_fb_ops = { +static const struct fb_ops msm_fb_ops = { .owner = THIS_MODULE, DRM_FB_HELPER_DEFAULT_OPS, diff --git a/drivers/gpu/drm/nouveau/nouveau_fbcon.c b/drivers/gpu/drm/nouveau/nouveau_fbcon.c index f439f0a5b43a..0c5cdda3c336 100644 --- a/drivers/gpu/drm/nouveau/nouveau_fbcon.c +++ b/drivers/gpu/drm/nouveau/nouveau_fbcon.c @@ -203,7 +203,7 @@ nouveau_fbcon_release(struct fb_info *info, int user) return 0; } -static struct fb_ops nouveau_fbcon_ops = { +static const struct fb_ops nouveau_fbcon_ops = { .owner = THIS_MODULE, DRM_FB_HELPER_DEFAULT_OPS, .fb_open = nouveau_fbcon_open, @@ -214,7 +214,7 @@ static struct fb_ops nouveau_fbcon_ops = { .fb_sync = nouveau_fbcon_sync, }; -static struct fb_ops nouveau_fbcon_sw_ops = { +static const struct fb_ops nouveau_fbcon_sw_ops = { .owner = THIS_MODULE, DRM_FB_HELPER_DEFAULT_OPS, .fb_open = nouveau_fbcon_open, diff --git a/drivers/gpu/drm/omapdrm/omap_fbdev.c b/drivers/gpu/drm/omapdrm/omap_fbdev.c index 58f53946ee4d..b06e5cbfd03a 100644 --- a/drivers/gpu/drm/omapdrm/omap_fbdev.c +++ b/drivers/gpu/drm/omapdrm/omap_fbdev.c @@ -70,7 +70,7 @@ fallback: return drm_fb_helper_pan_display(var, fbi); } -static struct fb_ops omap_fb_ops = { +static const struct fb_ops omap_fb_ops = { .owner = THIS_MODULE, .fb_check_var = drm_fb_helper_check_var, diff --git a/drivers/gpu/drm/radeon/radeon_fb.c b/drivers/gpu/drm/radeon/radeon_fb.c index f4f511796c40..ec0b7d6c994d 100644 --- a/drivers/gpu/drm/radeon/radeon_fb.c +++ b/drivers/gpu/drm/radeon/radeon_fb.c @@ -73,7 +73,7 @@ radeonfb_release(struct fb_info *info, int user) return 0; } -static struct fb_ops radeonfb_ops = { +static const struct fb_ops radeonfb_ops = { .owner = THIS_MODULE, DRM_FB_HELPER_DEFAULT_OPS, .fb_open = radeonfb_open, diff --git a/drivers/gpu/drm/rockchip/rockchip_drm_fbdev.c b/drivers/gpu/drm/rockchip/rockchip_drm_fbdev.c index 02be6c5ff857..521fe42ac5e2 100644 --- a/drivers/gpu/drm/rockchip/rockchip_drm_fbdev.c +++ b/drivers/gpu/drm/rockchip/rockchip_drm_fbdev.c @@ -27,7 +27,7 @@ static int rockchip_fbdev_mmap(struct fb_info *info, return rockchip_gem_mmap_buf(private->fbdev_bo, vma); } -static struct fb_ops rockchip_drm_fbdev_ops = { +static const struct fb_ops rockchip_drm_fbdev_ops = { .owner = THIS_MODULE, DRM_FB_HELPER_DEFAULT_OPS, .fb_mmap = rockchip_fbdev_mmap, diff --git a/drivers/gpu/drm/tegra/fb.c b/drivers/gpu/drm/tegra/fb.c index e34325c83d28..9d86081bf6c8 100644 --- a/drivers/gpu/drm/tegra/fb.c +++ b/drivers/gpu/drm/tegra/fb.c @@ -192,7 +192,7 @@ static int tegra_fb_mmap(struct fb_info *info, struct vm_area_struct *vma) return __tegra_gem_mmap(&bo->gem, vma); } -static struct fb_ops tegra_fb_ops = { +static const struct fb_ops tegra_fb_ops = { .owner = THIS_MODULE, DRM_FB_HELPER_DEFAULT_OPS, .fb_fillrect = drm_fb_helper_sys_fillrect, diff --git a/drivers/gpu/drm/vmwgfx/vmwgfx_fb.c b/drivers/gpu/drm/vmwgfx/vmwgfx_fb.c index ea29953e0b08..c59806d40e15 100644 --- a/drivers/gpu/drm/vmwgfx/vmwgfx_fb.c +++ b/drivers/gpu/drm/vmwgfx/vmwgfx_fb.c @@ -624,7 +624,7 @@ out_unlock: } -static struct fb_ops vmw_fb_ops = { +static const struct fb_ops vmw_fb_ops = { .owner = THIS_MODULE, .fb_check_var = vmw_fb_check_var, .fb_set_par = vmw_fb_set_par, -- cgit v1.2.3 From 06c4a9c2ae606a8c9fab303613234804b9c45a64 Mon Sep 17 00:00:00 2001 From: Sam Ravnborg Date: Sat, 7 Dec 2019 15:03:34 +0100 Subject: drm/panel: decouple connector from drm_panel MIME-Version: 1.0 Content-Type: text/plain; charset=UTF-8 Content-Transfer-Encoding: 8bit To facilitate moving connector creation to display drivers, decouple the drm_connector from drm_panel. This patch adds a connector argument to drm_panel_get_modes(). All users of drm_panel_get_modes() already had the connector available, so updating users was trivial. With this patch drm_panel no longer keeps a reference to the drm_connector. Signed-off-by: Sam Ravnborg Reviewed-by: Laurent Pinchart Reviewed-by: Linus Walleij Acked-by: Jeffrey Hugo Cc: Thierry Reding Cc: Laurent Pinchart Cc: Sam Ravnborg Cc: Andrzej Hajda Cc: Neil Armstrong Cc: Jonas Karlman Cc: Jernej Skrabec Cc: Maarten Lankhorst Cc: Maxime Ripard Cc: David Airlie Cc: Daniel Vetter Cc: Inki Dae Cc: Joonyoung Shim Cc: Seung-Woo Kim Cc: Kyungmin Park Cc: Kukjin Kim Cc: Krzysztof Kozlowski Cc: Stefan Agner Cc: Alison Wang Cc: Philipp Zabel Cc: Shawn Guo Cc: Sascha Hauer Cc: Pengutronix Kernel Team Cc: Fabio Estevam Cc: NXP Linux Team Cc: CK Hu Cc: Matthias Brugger Cc: Marek Vasut Cc: Tomi Valkeinen Cc: Kieran Bingham Cc: Sandy Huang Cc: "Heiko Stübner" Cc: Benjamin Gaignard Cc: Vincent Abriou Cc: Chen-Yu Tsai Cc: Jonathan Hunter Cc: Torsten Duwe Cc: Vasily Khoruzhick Cc: Icenowy Zheng Cc: Sean Paul Cc: Linus Walleij Cc: Boris Brezillon Cc: Hariprasad Kelam Cc: Alexios Zavras Cc: Brian Masney Cc: Rob Clark Cc: Thomas Gleixner Cc: Allison Randal Cc: Shayenne Moura Cc: Abhinav Kumar Cc: linux-arm-kernel@lists.infradead.org Cc: linux-samsung-soc@vger.kernel.org Cc: linux-mediatek@lists.infradead.org Cc: linux-renesas-soc@vger.kernel.org Cc: linux-rockchip@lists.infradead.org Cc: linux-tegra@vger.kernel.org Link: https://patchwork.freedesktop.org/patch/msgid/20191207140353.23967-7-sam@ravnborg.org --- drivers/gpu/drm/bridge/analogix/analogix-anx6345.c | 2 +- drivers/gpu/drm/bridge/analogix/analogix_dp_core.c | 2 +- drivers/gpu/drm/bridge/panel.c | 2 +- drivers/gpu/drm/bridge/parade-ps8622.c | 2 +- drivers/gpu/drm/bridge/tc358764.c | 2 +- drivers/gpu/drm/bridge/tc358767.c | 2 +- drivers/gpu/drm/bridge/ti-sn65dsi86.c | 2 +- drivers/gpu/drm/drm_panel.c | 10 +++++----- drivers/gpu/drm/exynos/exynos_drm_dpi.c | 2 +- drivers/gpu/drm/exynos/exynos_drm_dsi.c | 2 +- drivers/gpu/drm/fsl-dcu/fsl_dcu_drm_rgb.c | 2 +- drivers/gpu/drm/imx/imx-ldb.c | 2 +- drivers/gpu/drm/imx/parallel-display.c | 2 +- drivers/gpu/drm/mediatek/mtk_dsi.c | 2 +- drivers/gpu/drm/msm/disp/mdp4/mdp4_lvds_connector.c | 2 +- drivers/gpu/drm/msm/dsi/dsi_manager.c | 2 +- drivers/gpu/drm/mxsfb/mxsfb_out.c | 2 +- drivers/gpu/drm/omapdrm/omap_connector.c | 3 ++- drivers/gpu/drm/rcar-du/rcar_lvds.c | 2 +- drivers/gpu/drm/rockchip/rockchip_lvds.c | 2 +- drivers/gpu/drm/sti/sti_dvo.c | 2 +- drivers/gpu/drm/sun4i/sun4i_lvds.c | 2 +- drivers/gpu/drm/sun4i/sun4i_rgb.c | 2 +- drivers/gpu/drm/sun4i/sun6i_mipi_dsi.c | 2 +- drivers/gpu/drm/tegra/output.c | 2 +- include/drm/drm_panel.h | 9 +-------- 26 files changed, 31 insertions(+), 37 deletions(-) (limited to 'drivers/gpu/drm/tegra') diff --git a/drivers/gpu/drm/bridge/analogix/analogix-anx6345.c b/drivers/gpu/drm/bridge/analogix/analogix-anx6345.c index b4f3a923a52a..9917ce0d86a0 100644 --- a/drivers/gpu/drm/bridge/analogix/analogix-anx6345.c +++ b/drivers/gpu/drm/bridge/analogix/analogix-anx6345.c @@ -493,7 +493,7 @@ unlock: mutex_unlock(&anx6345->lock); if (!num_modes && anx6345->panel) - num_modes += drm_panel_get_modes(anx6345->panel); + num_modes += drm_panel_get_modes(anx6345->panel, connector); return num_modes; } diff --git a/drivers/gpu/drm/bridge/analogix/analogix_dp_core.c b/drivers/gpu/drm/bridge/analogix/analogix_dp_core.c index bb411fe52ae8..6effe532f820 100644 --- a/drivers/gpu/drm/bridge/analogix/analogix_dp_core.c +++ b/drivers/gpu/drm/bridge/analogix/analogix_dp_core.c @@ -1111,7 +1111,7 @@ static int analogix_dp_get_modes(struct drm_connector *connector) int ret, num_modes = 0; if (dp->plat_data->panel) { - num_modes += drm_panel_get_modes(dp->plat_data->panel); + num_modes += drm_panel_get_modes(dp->plat_data->panel, connector); } else { ret = analogix_dp_prepare_panel(dp, true, false); if (ret) { diff --git a/drivers/gpu/drm/bridge/panel.c b/drivers/gpu/drm/bridge/panel.c index 554da47f6d62..1443897f999b 100644 --- a/drivers/gpu/drm/bridge/panel.c +++ b/drivers/gpu/drm/bridge/panel.c @@ -37,7 +37,7 @@ static int panel_bridge_connector_get_modes(struct drm_connector *connector) struct panel_bridge *panel_bridge = drm_connector_to_panel_bridge(connector); - return drm_panel_get_modes(panel_bridge->panel); + return drm_panel_get_modes(panel_bridge->panel, connector); } static const struct drm_connector_helper_funcs diff --git a/drivers/gpu/drm/bridge/parade-ps8622.c b/drivers/gpu/drm/bridge/parade-ps8622.c index b7a72dfdcac3..10c47c008b40 100644 --- a/drivers/gpu/drm/bridge/parade-ps8622.c +++ b/drivers/gpu/drm/bridge/parade-ps8622.c @@ -461,7 +461,7 @@ static int ps8622_get_modes(struct drm_connector *connector) ps8622 = connector_to_ps8622(connector); - return drm_panel_get_modes(ps8622->panel); + return drm_panel_get_modes(ps8622->panel, connector); } static const struct drm_connector_helper_funcs ps8622_connector_helper_funcs = { diff --git a/drivers/gpu/drm/bridge/tc358764.c b/drivers/gpu/drm/bridge/tc358764.c index db298f550a5a..96207fcfde19 100644 --- a/drivers/gpu/drm/bridge/tc358764.c +++ b/drivers/gpu/drm/bridge/tc358764.c @@ -282,7 +282,7 @@ static int tc358764_get_modes(struct drm_connector *connector) { struct tc358764 *ctx = connector_to_tc358764(connector); - return drm_panel_get_modes(ctx->panel); + return drm_panel_get_modes(ctx->panel, connector); } static const diff --git a/drivers/gpu/drm/bridge/tc358767.c b/drivers/gpu/drm/bridge/tc358767.c index 8029478ffebb..3709e5ace724 100644 --- a/drivers/gpu/drm/bridge/tc358767.c +++ b/drivers/gpu/drm/bridge/tc358767.c @@ -1346,7 +1346,7 @@ static int tc_connector_get_modes(struct drm_connector *connector) return 0; } - count = drm_panel_get_modes(tc->panel); + count = drm_panel_get_modes(tc->panel, connector); if (count > 0) return count; diff --git a/drivers/gpu/drm/bridge/ti-sn65dsi86.c b/drivers/gpu/drm/bridge/ti-sn65dsi86.c index 43abf01ebd4c..9a2dd986afa5 100644 --- a/drivers/gpu/drm/bridge/ti-sn65dsi86.c +++ b/drivers/gpu/drm/bridge/ti-sn65dsi86.c @@ -206,7 +206,7 @@ static int ti_sn_bridge_connector_get_modes(struct drm_connector *connector) { struct ti_sn_bridge *pdata = connector_to_ti_sn_bridge(connector); - return drm_panel_get_modes(pdata->panel); + return drm_panel_get_modes(pdata->panel, connector); } static enum drm_mode_status diff --git a/drivers/gpu/drm/drm_panel.c b/drivers/gpu/drm/drm_panel.c index 8dded4b7d9a2..f6a745949da8 100644 --- a/drivers/gpu/drm/drm_panel.c +++ b/drivers/gpu/drm/drm_panel.c @@ -114,10 +114,9 @@ EXPORT_SYMBOL(drm_panel_remove); */ int drm_panel_attach(struct drm_panel *panel, struct drm_connector *connector) { - if (panel->connector) + if (panel->drm) return -EBUSY; - panel->connector = connector; panel->drm = connector->dev; return 0; @@ -136,7 +135,6 @@ EXPORT_SYMBOL(drm_panel_attach); */ void drm_panel_detach(struct drm_panel *panel) { - panel->connector = NULL; panel->drm = NULL; } EXPORT_SYMBOL(drm_panel_detach); @@ -250,6 +248,7 @@ EXPORT_SYMBOL(drm_panel_disable); /** * drm_panel_get_modes - probe the available display modes of a panel * @panel: DRM panel + * @connector: DRM connector * * The modes probed from the panel are automatically added to the connector * that the panel is attached to. @@ -257,13 +256,14 @@ EXPORT_SYMBOL(drm_panel_disable); * Return: The number of modes available from the panel on success or a * negative error code on failure. */ -int drm_panel_get_modes(struct drm_panel *panel) +int drm_panel_get_modes(struct drm_panel *panel, + struct drm_connector *connector) { if (!panel) return -EINVAL; if (panel->funcs && panel->funcs->get_modes) - return panel->funcs->get_modes(panel, panel->connector); + return panel->funcs->get_modes(panel, connector); return -EOPNOTSUPP; } diff --git a/drivers/gpu/drm/exynos/exynos_drm_dpi.c b/drivers/gpu/drm/exynos/exynos_drm_dpi.c index 5479ff71cbc6..43fa0f26c052 100644 --- a/drivers/gpu/drm/exynos/exynos_drm_dpi.c +++ b/drivers/gpu/drm/exynos/exynos_drm_dpi.c @@ -85,7 +85,7 @@ static int exynos_dpi_get_modes(struct drm_connector *connector) } if (ctx->panel) - return drm_panel_get_modes(ctx->panel); + return drm_panel_get_modes(ctx->panel, connector); return 0; } diff --git a/drivers/gpu/drm/exynos/exynos_drm_dsi.c b/drivers/gpu/drm/exynos/exynos_drm_dsi.c index 7de82e22252a..3955f84dc893 100644 --- a/drivers/gpu/drm/exynos/exynos_drm_dsi.c +++ b/drivers/gpu/drm/exynos/exynos_drm_dsi.c @@ -1462,7 +1462,7 @@ static int exynos_dsi_get_modes(struct drm_connector *connector) struct exynos_dsi *dsi = connector_to_dsi(connector); if (dsi->panel) - return drm_panel_get_modes(dsi->panel); + return drm_panel_get_modes(dsi->panel, connector); return 0; } diff --git a/drivers/gpu/drm/fsl-dcu/fsl_dcu_drm_rgb.c b/drivers/gpu/drm/fsl-dcu/fsl_dcu_drm_rgb.c index 82c972e9c024..9598ee3cc4d2 100644 --- a/drivers/gpu/drm/fsl-dcu/fsl_dcu_drm_rgb.c +++ b/drivers/gpu/drm/fsl-dcu/fsl_dcu_drm_rgb.c @@ -68,7 +68,7 @@ static int fsl_dcu_drm_connector_get_modes(struct drm_connector *connector) struct fsl_dcu_drm_connector *fsl_connector; fsl_connector = to_fsl_dcu_connector(connector); - return drm_panel_get_modes(fsl_connector->panel); + return drm_panel_get_modes(fsl_connector->panel, connector); } static int fsl_dcu_drm_connector_mode_valid(struct drm_connector *connector, diff --git a/drivers/gpu/drm/imx/imx-ldb.c b/drivers/gpu/drm/imx/imx-ldb.c index 208069faf183..8cb2665b2c74 100644 --- a/drivers/gpu/drm/imx/imx-ldb.c +++ b/drivers/gpu/drm/imx/imx-ldb.c @@ -127,7 +127,7 @@ static int imx_ldb_connector_get_modes(struct drm_connector *connector) struct imx_ldb_channel *imx_ldb_ch = con_to_imx_ldb_ch(connector); int num_modes; - num_modes = drm_panel_get_modes(imx_ldb_ch->panel); + num_modes = drm_panel_get_modes(imx_ldb_ch->panel, connector); if (num_modes > 0) return num_modes; diff --git a/drivers/gpu/drm/imx/parallel-display.c b/drivers/gpu/drm/imx/parallel-display.c index 35518e5de356..3dca424059f7 100644 --- a/drivers/gpu/drm/imx/parallel-display.c +++ b/drivers/gpu/drm/imx/parallel-display.c @@ -50,7 +50,7 @@ static int imx_pd_connector_get_modes(struct drm_connector *connector) struct device_node *np = imxpd->dev->of_node; int num_modes; - num_modes = drm_panel_get_modes(imxpd->panel); + num_modes = drm_panel_get_modes(imxpd->panel, connector); if (num_modes > 0) return num_modes; diff --git a/drivers/gpu/drm/mediatek/mtk_dsi.c b/drivers/gpu/drm/mediatek/mtk_dsi.c index e9931bbbe846..3b5e016d16c4 100644 --- a/drivers/gpu/drm/mediatek/mtk_dsi.c +++ b/drivers/gpu/drm/mediatek/mtk_dsi.c @@ -821,7 +821,7 @@ static int mtk_dsi_connector_get_modes(struct drm_connector *connector) { struct mtk_dsi *dsi = connector_to_dsi(connector); - return drm_panel_get_modes(dsi->panel); + return drm_panel_get_modes(dsi->panel, connector); } static const struct drm_encoder_helper_funcs mtk_dsi_encoder_helper_funcs = { diff --git a/drivers/gpu/drm/msm/disp/mdp4/mdp4_lvds_connector.c b/drivers/gpu/drm/msm/disp/mdp4/mdp4_lvds_connector.c index 31abd2352f3e..c7df71e2fafc 100644 --- a/drivers/gpu/drm/msm/disp/mdp4/mdp4_lvds_connector.c +++ b/drivers/gpu/drm/msm/disp/mdp4/mdp4_lvds_connector.c @@ -53,7 +53,7 @@ static int mdp4_lvds_connector_get_modes(struct drm_connector *connector) if (panel) { drm_panel_attach(panel, connector); - ret = drm_panel_get_modes(panel); + ret = drm_panel_get_modes(panel, connector); drm_panel_detach(panel); } diff --git a/drivers/gpu/drm/msm/dsi/dsi_manager.c b/drivers/gpu/drm/msm/dsi/dsi_manager.c index 271aa7bbca92..0fc29f1be8cc 100644 --- a/drivers/gpu/drm/msm/dsi/dsi_manager.c +++ b/drivers/gpu/drm/msm/dsi/dsi_manager.c @@ -329,7 +329,7 @@ static int dsi_mgr_connector_get_modes(struct drm_connector *connector) * attached to the drm_panel. */ drm_panel_attach(panel, connector); - num = drm_panel_get_modes(panel); + num = drm_panel_get_modes(panel, connector); if (!num) return 0; diff --git a/drivers/gpu/drm/mxsfb/mxsfb_out.c b/drivers/gpu/drm/mxsfb/mxsfb_out.c index 4eb94744c526..9eca1605d11d 100644 --- a/drivers/gpu/drm/mxsfb/mxsfb_out.c +++ b/drivers/gpu/drm/mxsfb/mxsfb_out.c @@ -31,7 +31,7 @@ static int mxsfb_panel_get_modes(struct drm_connector *connector) drm_connector_to_mxsfb_drm_private(connector); if (mxsfb->panel) - return drm_panel_get_modes(mxsfb->panel); + return drm_panel_get_modes(mxsfb->panel, connector); return 0; } diff --git a/drivers/gpu/drm/omapdrm/omap_connector.c b/drivers/gpu/drm/omapdrm/omap_connector.c index 5b8799c69f68..94cded387174 100644 --- a/drivers/gpu/drm/omapdrm/omap_connector.c +++ b/drivers/gpu/drm/omapdrm/omap_connector.c @@ -229,7 +229,8 @@ static int omap_connector_get_modes(struct drm_connector *connector) * operation to the panel API. */ if (omap_connector->output->panel) - return drm_panel_get_modes(omap_connector->output->panel); + return drm_panel_get_modes(omap_connector->output->panel, + connector); /* * We can't retrieve modes, which can happen for instance for a DVI or diff --git a/drivers/gpu/drm/rcar-du/rcar_lvds.c b/drivers/gpu/drm/rcar-du/rcar_lvds.c index 8c6c172bbf2e..2cf44b91853c 100644 --- a/drivers/gpu/drm/rcar-du/rcar_lvds.c +++ b/drivers/gpu/drm/rcar-du/rcar_lvds.c @@ -91,7 +91,7 @@ static int rcar_lvds_connector_get_modes(struct drm_connector *connector) { struct rcar_lvds *lvds = connector_to_rcar_lvds(connector); - return drm_panel_get_modes(lvds->panel); + return drm_panel_get_modes(lvds->panel, connector); } static int rcar_lvds_connector_atomic_check(struct drm_connector *connector, diff --git a/drivers/gpu/drm/rockchip/rockchip_lvds.c b/drivers/gpu/drm/rockchip/rockchip_lvds.c index 8a4c9af0ba73..325811d2e26e 100644 --- a/drivers/gpu/drm/rockchip/rockchip_lvds.c +++ b/drivers/gpu/drm/rockchip/rockchip_lvds.c @@ -201,7 +201,7 @@ static int rockchip_lvds_connector_get_modes(struct drm_connector *connector) struct rockchip_lvds *lvds = connector_to_lvds(connector); struct drm_panel *panel = lvds->panel; - return drm_panel_get_modes(panel); + return drm_panel_get_modes(panel, connector); } static const diff --git a/drivers/gpu/drm/sti/sti_dvo.c b/drivers/gpu/drm/sti/sti_dvo.c index 68289b0b063a..df2ee86cd4c1 100644 --- a/drivers/gpu/drm/sti/sti_dvo.c +++ b/drivers/gpu/drm/sti/sti_dvo.c @@ -339,7 +339,7 @@ static int sti_dvo_connector_get_modes(struct drm_connector *connector) struct sti_dvo *dvo = dvo_connector->dvo; if (dvo->panel) - return drm_panel_get_modes(dvo->panel); + return drm_panel_get_modes(dvo->panel, connector); return 0; } diff --git a/drivers/gpu/drm/sun4i/sun4i_lvds.c b/drivers/gpu/drm/sun4i/sun4i_lvds.c index 25ab2ef6d545..65b7a8739666 100644 --- a/drivers/gpu/drm/sun4i/sun4i_lvds.c +++ b/drivers/gpu/drm/sun4i/sun4i_lvds.c @@ -43,7 +43,7 @@ static int sun4i_lvds_get_modes(struct drm_connector *connector) struct sun4i_lvds *lvds = drm_connector_to_sun4i_lvds(connector); - return drm_panel_get_modes(lvds->panel); + return drm_panel_get_modes(lvds->panel, connector); } static struct drm_connector_helper_funcs sun4i_lvds_con_helper_funcs = { diff --git a/drivers/gpu/drm/sun4i/sun4i_rgb.c b/drivers/gpu/drm/sun4i/sun4i_rgb.c index e74b9eddca01..b27f16af50f5 100644 --- a/drivers/gpu/drm/sun4i/sun4i_rgb.c +++ b/drivers/gpu/drm/sun4i/sun4i_rgb.c @@ -47,7 +47,7 @@ static int sun4i_rgb_get_modes(struct drm_connector *connector) struct sun4i_rgb *rgb = drm_connector_to_sun4i_rgb(connector); - return drm_panel_get_modes(rgb->panel); + return drm_panel_get_modes(rgb->panel, connector); } /* diff --git a/drivers/gpu/drm/sun4i/sun6i_mipi_dsi.c b/drivers/gpu/drm/sun4i/sun6i_mipi_dsi.c index c958ca9bae63..4e8f634cc2db 100644 --- a/drivers/gpu/drm/sun4i/sun6i_mipi_dsi.c +++ b/drivers/gpu/drm/sun4i/sun6i_mipi_dsi.c @@ -795,7 +795,7 @@ static int sun6i_dsi_get_modes(struct drm_connector *connector) { struct sun6i_dsi *dsi = connector_to_sun6i_dsi(connector); - return drm_panel_get_modes(dsi->panel); + return drm_panel_get_modes(dsi->panel, connector); } static struct drm_connector_helper_funcs sun6i_dsi_connector_helper_funcs = { diff --git a/drivers/gpu/drm/tegra/output.c b/drivers/gpu/drm/tegra/output.c index 5bdbf9ffcda1..4948373d8c75 100644 --- a/drivers/gpu/drm/tegra/output.c +++ b/drivers/gpu/drm/tegra/output.c @@ -23,7 +23,7 @@ int tegra_output_connector_get_modes(struct drm_connector *connector) * ignore any other means of obtaining a mode. */ if (output->panel) { - err = drm_panel_get_modes(output->panel); + err = drm_panel_get_modes(output->panel, connector); if (err > 0) return err; } diff --git a/include/drm/drm_panel.h b/include/drm/drm_panel.h index feebec16e33a..03a5860f1a1b 100644 --- a/include/drm/drm_panel.h +++ b/include/drm/drm_panel.h @@ -136,13 +136,6 @@ struct drm_panel { */ struct drm_device *drm; - /** - * @connector: - * - * DRM connector that the panel is attached to. - */ - struct drm_connector *connector; - /** * @dev: * @@ -201,7 +194,7 @@ int drm_panel_unprepare(struct drm_panel *panel); int drm_panel_enable(struct drm_panel *panel); int drm_panel_disable(struct drm_panel *panel); -int drm_panel_get_modes(struct drm_panel *panel); +int drm_panel_get_modes(struct drm_panel *panel, struct drm_connector *connector); #if defined(CONFIG_OF) && defined(CONFIG_DRM_PANEL) struct drm_panel *of_drm_find_panel(const struct device_node *np); -- cgit v1.2.3 From bb9d681b2508bb46e83307e61e299254eaea1233 Mon Sep 17 00:00:00 2001 From: Andrzej Pietrasiewicz Date: Thu, 2 Jan 2020 14:22:57 +0100 Subject: drm/tegra: Provide ddc symlink in output connector sysfs directory Use the ddc pointer provided by the generic connector. Signed-off-by: Andrzej Pietrasiewicz Acked-by: Sam Ravnborg Reviewed-by: Emil Velikov Link: https://patchwork.freedesktop.org/patch/msgid/20200102132300.24309-2-andrzej.p@collabora.com --- drivers/gpu/drm/tegra/hdmi.c | 7 ++++--- drivers/gpu/drm/tegra/sor.c | 7 ++++--- 2 files changed, 8 insertions(+), 6 deletions(-) (limited to 'drivers/gpu/drm/tegra') diff --git a/drivers/gpu/drm/tegra/hdmi.c b/drivers/gpu/drm/tegra/hdmi.c index 50269ffbcb6b..21a629adcb51 100644 --- a/drivers/gpu/drm/tegra/hdmi.c +++ b/drivers/gpu/drm/tegra/hdmi.c @@ -1430,9 +1430,10 @@ static int tegra_hdmi_init(struct host1x_client *client) hdmi->output.dev = client->dev; - drm_connector_init(drm, &hdmi->output.connector, - &tegra_hdmi_connector_funcs, - DRM_MODE_CONNECTOR_HDMIA); + drm_connector_init_with_ddc(drm, &hdmi->output.connector, + &tegra_hdmi_connector_funcs, + DRM_MODE_CONNECTOR_HDMIA, + hdmi->output.ddc); drm_connector_helper_add(&hdmi->output.connector, &tegra_hdmi_connector_helper_funcs); hdmi->output.connector.dpms = DRM_MODE_DPMS_OFF; diff --git a/drivers/gpu/drm/tegra/sor.c b/drivers/gpu/drm/tegra/sor.c index a68d3b36b972..1b8087d2dafe 100644 --- a/drivers/gpu/drm/tegra/sor.c +++ b/drivers/gpu/drm/tegra/sor.c @@ -3086,9 +3086,10 @@ static int tegra_sor_init(struct host1x_client *client) sor->output.dev = sor->dev; - drm_connector_init(drm, &sor->output.connector, - &tegra_sor_connector_funcs, - connector); + drm_connector_init_with_ddc(drm, &sor->output.connector, + &tegra_sor_connector_funcs, + connector, + sor->output.ddc); drm_connector_helper_add(&sor->output.connector, &tegra_sor_connector_helper_funcs); sor->output.connector.dpms = DRM_MODE_DPMS_OFF; -- cgit v1.2.3 From 608f43ad27ab26700677cc4d9ead3b2d9d338a21 Mon Sep 17 00:00:00 2001 From: Thierry Reding Date: Mon, 2 Dec 2019 10:51:58 +0100 Subject: gpu: host1x: Rename "parent" to "host" Rename the host1x clients' parent to "host" because that more closely describes what it is. The parent can be confused with the parent device in terms of the device hierarchy. Subsequent patches will add a new member that refers to the parent in that hierarchy. Signed-off-by: Thierry Reding --- drivers/gpu/drm/tegra/dc.c | 6 +++--- drivers/gpu/drm/tegra/drm.c | 4 ++-- drivers/gpu/drm/tegra/dsi.c | 2 +- drivers/gpu/drm/tegra/gr2d.c | 4 ++-- drivers/gpu/drm/tegra/gr3d.c | 4 ++-- drivers/gpu/drm/tegra/hdmi.c | 2 +- drivers/gpu/drm/tegra/hub.c | 4 ++-- drivers/gpu/drm/tegra/sor.c | 2 +- drivers/gpu/drm/tegra/vic.c | 8 ++++---- drivers/gpu/host1x/bus.c | 4 ++-- drivers/gpu/host1x/syncpt.c | 2 +- include/linux/host1x.h | 4 ++-- 12 files changed, 23 insertions(+), 23 deletions(-) (limited to 'drivers/gpu/drm/tegra') diff --git a/drivers/gpu/drm/tegra/dc.c b/drivers/gpu/drm/tegra/dc.c index 714af052fbef..471bdf504df1 100644 --- a/drivers/gpu/drm/tegra/dc.c +++ b/drivers/gpu/drm/tegra/dc.c @@ -1996,7 +1996,7 @@ static bool tegra_dc_has_window_groups(struct tegra_dc *dc) static int tegra_dc_init(struct host1x_client *client) { - struct drm_device *drm = dev_get_drvdata(client->parent); + struct drm_device *drm = dev_get_drvdata(client->host); unsigned long flags = HOST1X_SYNCPT_CLIENT_MANAGED; struct tegra_dc *dc = host1x_client_to_dc(client); struct tegra_drm *tegra = drm->dev_private; @@ -2077,9 +2077,9 @@ static int tegra_dc_init(struct host1x_client *client) /* * Inherit the DMA parameters (such as maximum segment size) from the - * parent device. + * parent host1x device. */ - client->dev->dma_parms = client->parent->dma_parms; + client->dev->dma_parms = client->host->dma_parms; return 0; diff --git a/drivers/gpu/drm/tegra/drm.c b/drivers/gpu/drm/tegra/drm.c index f455ce71e85d..aa9e49f04988 100644 --- a/drivers/gpu/drm/tegra/drm.c +++ b/drivers/gpu/drm/tegra/drm.c @@ -905,7 +905,7 @@ int tegra_drm_unregister_client(struct tegra_drm *tegra, int host1x_client_iommu_attach(struct host1x_client *client) { struct iommu_domain *domain = iommu_get_domain_for_dev(client->dev); - struct drm_device *drm = dev_get_drvdata(client->parent); + struct drm_device *drm = dev_get_drvdata(client->host); struct tegra_drm *tegra = drm->dev_private; struct iommu_group *group = NULL; int err; @@ -941,7 +941,7 @@ int host1x_client_iommu_attach(struct host1x_client *client) void host1x_client_iommu_detach(struct host1x_client *client) { - struct drm_device *drm = dev_get_drvdata(client->parent); + struct drm_device *drm = dev_get_drvdata(client->host); struct tegra_drm *tegra = drm->dev_private; struct iommu_domain *domain; diff --git a/drivers/gpu/drm/tegra/dsi.c b/drivers/gpu/drm/tegra/dsi.c index a5d47e301c5f..ec475d022fa0 100644 --- a/drivers/gpu/drm/tegra/dsi.c +++ b/drivers/gpu/drm/tegra/dsi.c @@ -1030,7 +1030,7 @@ static const struct drm_encoder_helper_funcs tegra_dsi_encoder_helper_funcs = { static int tegra_dsi_init(struct host1x_client *client) { - struct drm_device *drm = dev_get_drvdata(client->parent); + struct drm_device *drm = dev_get_drvdata(client->host); struct tegra_dsi *dsi = host1x_client_to_dsi(client); int err; diff --git a/drivers/gpu/drm/tegra/gr2d.c b/drivers/gpu/drm/tegra/gr2d.c index 1fc4e56c7cc5..48363f744bb9 100644 --- a/drivers/gpu/drm/tegra/gr2d.c +++ b/drivers/gpu/drm/tegra/gr2d.c @@ -34,7 +34,7 @@ static inline struct gr2d *to_gr2d(struct tegra_drm_client *client) static int gr2d_init(struct host1x_client *client) { struct tegra_drm_client *drm = host1x_to_drm_client(client); - struct drm_device *dev = dev_get_drvdata(client->parent); + struct drm_device *dev = dev_get_drvdata(client->host); unsigned long flags = HOST1X_SYNCPT_HAS_BASE; struct gr2d *gr2d = to_gr2d(drm); int err; @@ -76,7 +76,7 @@ put: static int gr2d_exit(struct host1x_client *client) { struct tegra_drm_client *drm = host1x_to_drm_client(client); - struct drm_device *dev = dev_get_drvdata(client->parent); + struct drm_device *dev = dev_get_drvdata(client->host); struct tegra_drm *tegra = dev->dev_private; struct gr2d *gr2d = to_gr2d(drm); int err; diff --git a/drivers/gpu/drm/tegra/gr3d.c b/drivers/gpu/drm/tegra/gr3d.c index 24fae0f64032..c0a528be0369 100644 --- a/drivers/gpu/drm/tegra/gr3d.c +++ b/drivers/gpu/drm/tegra/gr3d.c @@ -43,7 +43,7 @@ static inline struct gr3d *to_gr3d(struct tegra_drm_client *client) static int gr3d_init(struct host1x_client *client) { struct tegra_drm_client *drm = host1x_to_drm_client(client); - struct drm_device *dev = dev_get_drvdata(client->parent); + struct drm_device *dev = dev_get_drvdata(client->host); unsigned long flags = HOST1X_SYNCPT_HAS_BASE; struct gr3d *gr3d = to_gr3d(drm); int err; @@ -85,7 +85,7 @@ put: static int gr3d_exit(struct host1x_client *client) { struct tegra_drm_client *drm = host1x_to_drm_client(client); - struct drm_device *dev = dev_get_drvdata(client->parent); + struct drm_device *dev = dev_get_drvdata(client->host); struct gr3d *gr3d = to_gr3d(drm); int err; diff --git a/drivers/gpu/drm/tegra/hdmi.c b/drivers/gpu/drm/tegra/hdmi.c index 50269ffbcb6b..38bf1d16095f 100644 --- a/drivers/gpu/drm/tegra/hdmi.c +++ b/drivers/gpu/drm/tegra/hdmi.c @@ -1424,8 +1424,8 @@ static const struct drm_encoder_helper_funcs tegra_hdmi_encoder_helper_funcs = { static int tegra_hdmi_init(struct host1x_client *client) { - struct drm_device *drm = dev_get_drvdata(client->parent); struct tegra_hdmi *hdmi = host1x_client_to_hdmi(client); + struct drm_device *drm = dev_get_drvdata(client->host); int err; hdmi->output.dev = client->dev; diff --git a/drivers/gpu/drm/tegra/hub.c b/drivers/gpu/drm/tegra/hub.c index 47d985ac7cd7..7d9e1309be3b 100644 --- a/drivers/gpu/drm/tegra/hub.c +++ b/drivers/gpu/drm/tegra/hub.c @@ -705,7 +705,7 @@ void tegra_display_hub_atomic_commit(struct drm_device *drm, static int tegra_display_hub_init(struct host1x_client *client) { struct tegra_display_hub *hub = to_tegra_display_hub(client); - struct drm_device *drm = dev_get_drvdata(client->parent); + struct drm_device *drm = dev_get_drvdata(client->host); struct tegra_drm *tegra = drm->dev_private; struct tegra_display_hub_state *state; @@ -723,7 +723,7 @@ static int tegra_display_hub_init(struct host1x_client *client) static int tegra_display_hub_exit(struct host1x_client *client) { - struct drm_device *drm = dev_get_drvdata(client->parent); + struct drm_device *drm = dev_get_drvdata(client->host); struct tegra_drm *tegra = drm->dev_private; drm_atomic_private_obj_fini(&tegra->hub->base); diff --git a/drivers/gpu/drm/tegra/sor.c b/drivers/gpu/drm/tegra/sor.c index a68d3b36b972..956bf5d680ad 100644 --- a/drivers/gpu/drm/tegra/sor.c +++ b/drivers/gpu/drm/tegra/sor.c @@ -3053,7 +3053,7 @@ static const struct tegra_sor_ops tegra_sor_dp_ops = { static int tegra_sor_init(struct host1x_client *client) { - struct drm_device *drm = dev_get_drvdata(client->parent); + struct drm_device *drm = dev_get_drvdata(client->host); const struct drm_encoder_helper_funcs *helpers = NULL; struct tegra_sor *sor = host1x_client_to_sor(client); int connector = DRM_MODE_CONNECTOR_Unknown; diff --git a/drivers/gpu/drm/tegra/vic.c b/drivers/gpu/drm/tegra/vic.c index 3526c2892ddb..ade56b860cf9 100644 --- a/drivers/gpu/drm/tegra/vic.c +++ b/drivers/gpu/drm/tegra/vic.c @@ -161,7 +161,7 @@ static int vic_boot(struct vic *vic) static int vic_init(struct host1x_client *client) { struct tegra_drm_client *drm = host1x_to_drm_client(client); - struct drm_device *dev = dev_get_drvdata(client->parent); + struct drm_device *dev = dev_get_drvdata(client->host); struct tegra_drm *tegra = dev->dev_private; struct vic *vic = to_vic(drm); int err; @@ -190,9 +190,9 @@ static int vic_init(struct host1x_client *client) /* * Inherit the DMA parameters (such as maximum segment size) from the - * parent device. + * parent host1x device. */ - client->dev->dma_parms = client->parent->dma_parms; + client->dev->dma_parms = client->host->dma_parms; return 0; @@ -209,7 +209,7 @@ detach: static int vic_exit(struct host1x_client *client) { struct tegra_drm_client *drm = host1x_to_drm_client(client); - struct drm_device *dev = dev_get_drvdata(client->parent); + struct drm_device *dev = dev_get_drvdata(client->host); struct tegra_drm *tegra = dev->dev_private; struct vic *vic = to_vic(drm); int err; diff --git a/drivers/gpu/host1x/bus.c b/drivers/gpu/host1x/bus.c index 2c8559ff3481..50d500345d04 100644 --- a/drivers/gpu/host1x/bus.c +++ b/drivers/gpu/host1x/bus.c @@ -120,7 +120,7 @@ static void host1x_subdev_register(struct host1x_device *device, mutex_lock(&device->clients_lock); list_move_tail(&client->list, &device->clients); list_move_tail(&subdev->list, &device->active); - client->parent = &device->dev; + client->host = &device->dev; subdev->client = client; mutex_unlock(&device->clients_lock); mutex_unlock(&device->subdevs_lock); @@ -156,7 +156,7 @@ static void __host1x_subdev_unregister(struct host1x_device *device, */ mutex_lock(&device->clients_lock); subdev->client = NULL; - client->parent = NULL; + client->host = NULL; list_move_tail(&subdev->list, &device->subdevs); /* * XXX: Perhaps don't do this here, but rather explicitly remove it diff --git a/drivers/gpu/host1x/syncpt.c b/drivers/gpu/host1x/syncpt.c index dd1cd0142941..fce7892d5137 100644 --- a/drivers/gpu/host1x/syncpt.c +++ b/drivers/gpu/host1x/syncpt.c @@ -421,7 +421,7 @@ int host1x_syncpt_init(struct host1x *host) struct host1x_syncpt *host1x_syncpt_request(struct host1x_client *client, unsigned long flags) { - struct host1x *host = dev_get_drvdata(client->parent->parent); + struct host1x *host = dev_get_drvdata(client->host->parent); return host1x_syncpt_alloc(host, client, flags); } diff --git a/include/linux/host1x.h b/include/linux/host1x.h index 6f8d772591ba..b673d6198e05 100644 --- a/include/linux/host1x.h +++ b/include/linux/host1x.h @@ -33,7 +33,7 @@ struct host1x_client_ops { /** * struct host1x_client - host1x client structure * @list: list node for the host1x client - * @parent: pointer to struct device representing the host1x controller + * @host: pointer to struct device representing the host1x controller * @dev: pointer to struct device backing this host1x client * @group: IOMMU group that this client is a member of * @ops: host1x client operations @@ -44,7 +44,7 @@ struct host1x_client_ops { */ struct host1x_client { struct list_head list; - struct device *parent; + struct device *host; struct device *dev; struct iommu_group *group; -- cgit v1.2.3 From fd67e9c6ed5af223af0daee093593abe3dbb53d4 Mon Sep 17 00:00:00 2001 From: Thierry Reding Date: Mon, 2 Dec 2019 15:29:03 +0100 Subject: drm/tegra: Do not implement runtime PM The Tegra DRM driver heavily relies on the implementations for runtime suspend/resume to be called at specific times. Unfortunately, there are some cases where that doesn't work. One example is if the user disables runtime PM for a given subdevice. Another example is that the PM core acquires a reference to runtime PM during system sleep, effectively preventing devices from going into low power modes. This is intentional to avoid nasty race conditions, but it also causes system sleep to not function properly on all Tegra systems. Fix this by not implementing runtime PM at all. Instead, a minimal, reference-counted suspend/resume infrastructure is added to the host1x bus. This has the benefit that it can be used regardless of the system power state (or any transitions we might be in), or whether or not the user allows runtime PM. Atomic modesetting guarantees that these functions will end up being called at the right point in time, so the pitfalls for the more generic runtime PM do not apply here. Signed-off-by: Thierry Reding --- drivers/gpu/drm/tegra/dc.c | 141 +++++++++++++++++------------- drivers/gpu/drm/tegra/dpaux.c | 2 +- drivers/gpu/drm/tegra/drm.h | 2 + drivers/gpu/drm/tegra/dsi.c | 175 ++++++++++++++++++++----------------- drivers/gpu/drm/tegra/hdmi.c | 116 ++++++++++++++----------- drivers/gpu/drm/tegra/hub.c | 194 +++++++++++++++++++++++++----------------- drivers/gpu/drm/tegra/hub.h | 2 +- drivers/gpu/drm/tegra/sor.c | 154 +++++++++++++++++++-------------- drivers/gpu/host1x/bus.c | 75 ++++++++++++++++ include/linux/host1x.h | 11 +++ 10 files changed, 541 insertions(+), 331 deletions(-) (limited to 'drivers/gpu/drm/tegra') diff --git a/drivers/gpu/drm/tegra/dc.c b/drivers/gpu/drm/tegra/dc.c index 471bdf504df1..7c70fd31a4c2 100644 --- a/drivers/gpu/drm/tegra/dc.c +++ b/drivers/gpu/drm/tegra/dc.c @@ -1727,6 +1727,7 @@ static void tegra_crtc_atomic_disable(struct drm_crtc *crtc, { struct tegra_dc *dc = to_tegra_dc(crtc); u32 value; + int err; if (!tegra_dc_idle(dc)) { tegra_dc_stop(dc); @@ -1773,7 +1774,9 @@ static void tegra_crtc_atomic_disable(struct drm_crtc *crtc, spin_unlock_irq(&crtc->dev->event_lock); - pm_runtime_put_sync(dc->dev); + err = host1x_client_suspend(&dc->client); + if (err < 0) + dev_err(dc->dev, "failed to suspend: %d\n", err); } static void tegra_crtc_atomic_enable(struct drm_crtc *crtc, @@ -1783,8 +1786,13 @@ static void tegra_crtc_atomic_enable(struct drm_crtc *crtc, struct tegra_dc_state *state = to_dc_state(crtc->state); struct tegra_dc *dc = to_tegra_dc(crtc); u32 value; + int err; - pm_runtime_get_sync(dc->dev); + err = host1x_client_resume(&dc->client); + if (err < 0) { + dev_err(dc->dev, "failed to resume: %d\n", err); + return; + } /* initialize display controller */ if (dc->syncpt) { @@ -2012,6 +2020,15 @@ static int tegra_dc_init(struct host1x_client *client) if (!tegra_dc_has_window_groups(dc)) return 0; + /* + * Set the display hub as the host1x client parent for the display + * controller. This is needed for the runtime reference counting that + * ensures the display hub is always powered when any of the display + * controllers are. + */ + if (dc->soc->has_nvdisplay) + client->parent = &tegra->hub->client; + dc->syncpt = host1x_syncpt_request(client, flags); if (!dc->syncpt) dev_warn(dc->dev, "failed to allocate syncpoint\n"); @@ -2121,9 +2138,74 @@ static int tegra_dc_exit(struct host1x_client *client) return 0; } +static int tegra_dc_runtime_suspend(struct host1x_client *client) +{ + struct tegra_dc *dc = host1x_client_to_dc(client); + struct device *dev = client->dev; + int err; + + err = reset_control_assert(dc->rst); + if (err < 0) { + dev_err(dev, "failed to assert reset: %d\n", err); + return err; + } + + if (dc->soc->has_powergate) + tegra_powergate_power_off(dc->powergate); + + clk_disable_unprepare(dc->clk); + pm_runtime_put_sync(dev); + + return 0; +} + +static int tegra_dc_runtime_resume(struct host1x_client *client) +{ + struct tegra_dc *dc = host1x_client_to_dc(client); + struct device *dev = client->dev; + int err; + + err = pm_runtime_get_sync(dev); + if (err < 0) { + dev_err(dev, "failed to get runtime PM: %d\n", err); + return err; + } + + if (dc->soc->has_powergate) { + err = tegra_powergate_sequence_power_up(dc->powergate, dc->clk, + dc->rst); + if (err < 0) { + dev_err(dev, "failed to power partition: %d\n", err); + goto put_rpm; + } + } else { + err = clk_prepare_enable(dc->clk); + if (err < 0) { + dev_err(dev, "failed to enable clock: %d\n", err); + goto put_rpm; + } + + err = reset_control_deassert(dc->rst); + if (err < 0) { + dev_err(dev, "failed to deassert reset: %d\n", err); + goto disable_clk; + } + } + + return 0; + +disable_clk: + clk_disable_unprepare(dc->clk); +put_rpm: + pm_runtime_put_sync(dev); + return err; +} + static const struct host1x_client_ops dc_client_ops = { .init = tegra_dc_init, .exit = tegra_dc_exit, + .suspend = tegra_dc_runtime_suspend, + .resume = tegra_dc_runtime_resume, }; static const struct tegra_dc_soc_info tegra20_dc_soc_info = { @@ -2535,65 +2617,10 @@ static int tegra_dc_remove(struct platform_device *pdev) return 0; } -#ifdef CONFIG_PM -static int tegra_dc_suspend(struct device *dev) -{ - struct tegra_dc *dc = dev_get_drvdata(dev); - int err; - - err = reset_control_assert(dc->rst); - if (err < 0) { - dev_err(dev, "failed to assert reset: %d\n", err); - return err; - } - - if (dc->soc->has_powergate) - tegra_powergate_power_off(dc->powergate); - - clk_disable_unprepare(dc->clk); - - return 0; -} - -static int tegra_dc_resume(struct device *dev) -{ - struct tegra_dc *dc = dev_get_drvdata(dev); - int err; - - if (dc->soc->has_powergate) { - err = tegra_powergate_sequence_power_up(dc->powergate, dc->clk, - dc->rst); - if (err < 0) { - dev_err(dev, "failed to power partition: %d\n", err); - return err; - } - } else { - err = clk_prepare_enable(dc->clk); - if (err < 0) { - dev_err(dev, "failed to enable clock: %d\n", err); - return err; - } - - err = reset_control_deassert(dc->rst); - if (err < 0) { - dev_err(dev, "failed to deassert reset: %d\n", err); - return err; - } - } - - return 0; -} -#endif - -static const struct dev_pm_ops tegra_dc_pm_ops = { - SET_RUNTIME_PM_OPS(tegra_dc_suspend, tegra_dc_resume, NULL) -}; - struct platform_driver tegra_dc_driver = { .driver = { .name = "tegra-dc", .of_match_table = tegra_dc_of_match, - .pm = &tegra_dc_pm_ops, }, .probe = tegra_dc_probe, .remove = tegra_dc_remove, diff --git a/drivers/gpu/drm/tegra/dpaux.c b/drivers/gpu/drm/tegra/dpaux.c index 622cdf1ad246..7dfb50f65067 100644 --- a/drivers/gpu/drm/tegra/dpaux.c +++ b/drivers/gpu/drm/tegra/dpaux.c @@ -588,7 +588,7 @@ static int tegra_dpaux_remove(struct platform_device *pdev) /* make sure pads are powered down when not in use */ tegra_dpaux_pad_power_down(dpaux); - pm_runtime_put(&pdev->dev); + pm_runtime_put_sync(&pdev->dev); pm_runtime_disable(&pdev->dev); drm_dp_aux_unregister(&dpaux->aux); diff --git a/drivers/gpu/drm/tegra/drm.h b/drivers/gpu/drm/tegra/drm.h index d941553f7a3d..ed99b67deb29 100644 --- a/drivers/gpu/drm/tegra/drm.h +++ b/drivers/gpu/drm/tegra/drm.h @@ -144,6 +144,8 @@ int tegra_output_init(struct drm_device *drm, struct tegra_output *output); void tegra_output_exit(struct tegra_output *output); void tegra_output_find_possible_crtcs(struct tegra_output *output, struct drm_device *drm); +int tegra_output_suspend(struct tegra_output *output); +int tegra_output_resume(struct tegra_output *output); int tegra_output_connector_get_modes(struct drm_connector *connector); enum drm_connector_status diff --git a/drivers/gpu/drm/tegra/dsi.c b/drivers/gpu/drm/tegra/dsi.c index ec475d022fa0..88b9d64c77bf 100644 --- a/drivers/gpu/drm/tegra/dsi.c +++ b/drivers/gpu/drm/tegra/dsi.c @@ -840,7 +840,9 @@ static void tegra_dsi_unprepare(struct tegra_dsi *dsi) dev_err(dsi->dev, "failed to disable MIPI calibration: %d\n", err); - pm_runtime_put(dsi->dev); + err = host1x_client_suspend(&dsi->client); + if (err < 0) + dev_err(dsi->dev, "failed to suspend: %d\n", err); } static void tegra_dsi_encoder_disable(struct drm_encoder *encoder) @@ -882,11 +884,15 @@ static void tegra_dsi_encoder_disable(struct drm_encoder *encoder) tegra_dsi_unprepare(dsi); } -static void tegra_dsi_prepare(struct tegra_dsi *dsi) +static int tegra_dsi_prepare(struct tegra_dsi *dsi) { int err; - pm_runtime_get_sync(dsi->dev); + err = host1x_client_resume(&dsi->client); + if (err < 0) { + dev_err(dsi->dev, "failed to resume: %d\n", err); + return err; + } err = tegra_mipi_enable(dsi->mipi); if (err < 0) @@ -899,6 +905,8 @@ static void tegra_dsi_prepare(struct tegra_dsi *dsi) if (dsi->slave) tegra_dsi_prepare(dsi->slave); + + return 0; } static void tegra_dsi_encoder_enable(struct drm_encoder *encoder) @@ -909,8 +917,13 @@ static void tegra_dsi_encoder_enable(struct drm_encoder *encoder) struct tegra_dsi *dsi = to_dsi(output); struct tegra_dsi_state *state; u32 value; + int err; - tegra_dsi_prepare(dsi); + err = tegra_dsi_prepare(dsi); + if (err < 0) { + dev_err(dsi->dev, "failed to prepare: %d\n", err); + return; + } state = tegra_dsi_get_state(dsi); @@ -1075,9 +1088,89 @@ static int tegra_dsi_exit(struct host1x_client *client) return 0; } +static int tegra_dsi_runtime_suspend(struct host1x_client *client) +{ + struct tegra_dsi *dsi = host1x_client_to_dsi(client); + struct device *dev = client->dev; + int err; + + if (dsi->rst) { + err = reset_control_assert(dsi->rst); + if (err < 0) { + dev_err(dev, "failed to assert reset: %d\n", err); + return err; + } + } + + usleep_range(1000, 2000); + + clk_disable_unprepare(dsi->clk_lp); + clk_disable_unprepare(dsi->clk); + + regulator_disable(dsi->vdd); + pm_runtime_put_sync(dev); + + return 0; +} + +static int tegra_dsi_runtime_resume(struct host1x_client *client) +{ + struct tegra_dsi *dsi = host1x_client_to_dsi(client); + struct device *dev = client->dev; + int err; + + err = pm_runtime_get_sync(dev); + if (err < 0) { + dev_err(dev, "failed to get runtime PM: %d\n", err); + return err; + } + + err = regulator_enable(dsi->vdd); + if (err < 0) { + dev_err(dev, "failed to enable VDD supply: %d\n", err); + goto put_rpm; + } + + err = clk_prepare_enable(dsi->clk); + if (err < 0) { + dev_err(dev, "cannot enable DSI clock: %d\n", err); + goto disable_vdd; + } + + err = clk_prepare_enable(dsi->clk_lp); + if (err < 0) { + dev_err(dev, "cannot enable low-power clock: %d\n", err); + goto disable_clk; + } + + usleep_range(1000, 2000); + + if (dsi->rst) { + err = reset_control_deassert(dsi->rst); + if (err < 0) { + dev_err(dev, "cannot assert reset: %d\n", err); + goto disable_clk_lp; + } + } + + return 0; + +disable_clk_lp: + clk_disable_unprepare(dsi->clk_lp); +disable_clk: + clk_disable_unprepare(dsi->clk); +disable_vdd: + regulator_disable(dsi->vdd); +put_rpm: + pm_runtime_put_sync(dev); + return err; +} + static const struct host1x_client_ops dsi_client_ops = { .init = tegra_dsi_init, .exit = tegra_dsi_exit, + .suspend = tegra_dsi_runtime_suspend, + .resume = tegra_dsi_runtime_resume, }; static int tegra_dsi_setup_clocks(struct tegra_dsi *dsi) @@ -1596,79 +1689,6 @@ static int tegra_dsi_remove(struct platform_device *pdev) return 0; } -#ifdef CONFIG_PM -static int tegra_dsi_suspend(struct device *dev) -{ - struct tegra_dsi *dsi = dev_get_drvdata(dev); - int err; - - if (dsi->rst) { - err = reset_control_assert(dsi->rst); - if (err < 0) { - dev_err(dev, "failed to assert reset: %d\n", err); - return err; - } - } - - usleep_range(1000, 2000); - - clk_disable_unprepare(dsi->clk_lp); - clk_disable_unprepare(dsi->clk); - - regulator_disable(dsi->vdd); - - return 0; -} - -static int tegra_dsi_resume(struct device *dev) -{ - struct tegra_dsi *dsi = dev_get_drvdata(dev); - int err; - - err = regulator_enable(dsi->vdd); - if (err < 0) { - dev_err(dsi->dev, "failed to enable VDD supply: %d\n", err); - return err; - } - - err = clk_prepare_enable(dsi->clk); - if (err < 0) { - dev_err(dev, "cannot enable DSI clock: %d\n", err); - goto disable_vdd; - } - - err = clk_prepare_enable(dsi->clk_lp); - if (err < 0) { - dev_err(dev, "cannot enable low-power clock: %d\n", err); - goto disable_clk; - } - - usleep_range(1000, 2000); - - if (dsi->rst) { - err = reset_control_deassert(dsi->rst); - if (err < 0) { - dev_err(dev, "cannot assert reset: %d\n", err); - goto disable_clk_lp; - } - } - - return 0; - -disable_clk_lp: - clk_disable_unprepare(dsi->clk_lp); -disable_clk: - clk_disable_unprepare(dsi->clk); -disable_vdd: - regulator_disable(dsi->vdd); - return err; -} -#endif - -static const struct dev_pm_ops tegra_dsi_pm_ops = { - SET_RUNTIME_PM_OPS(tegra_dsi_suspend, tegra_dsi_resume, NULL) -}; - static const struct of_device_id tegra_dsi_of_match[] = { { .compatible = "nvidia,tegra210-dsi", }, { .compatible = "nvidia,tegra132-dsi", }, @@ -1682,7 +1702,6 @@ struct platform_driver tegra_dsi_driver = { .driver = { .name = "tegra-dsi", .of_match_table = tegra_dsi_of_match, - .pm = &tegra_dsi_pm_ops, }, .probe = tegra_dsi_probe, .remove = tegra_dsi_remove, diff --git a/drivers/gpu/drm/tegra/hdmi.c b/drivers/gpu/drm/tegra/hdmi.c index 38bf1d16095f..cb504ec8f284 100644 --- a/drivers/gpu/drm/tegra/hdmi.c +++ b/drivers/gpu/drm/tegra/hdmi.c @@ -1146,6 +1146,7 @@ static void tegra_hdmi_encoder_disable(struct drm_encoder *encoder) struct tegra_dc *dc = to_tegra_dc(encoder->crtc); struct tegra_hdmi *hdmi = to_hdmi(output); u32 value; + int err; /* * The following accesses registers of the display controller, so make @@ -1171,7 +1172,9 @@ static void tegra_hdmi_encoder_disable(struct drm_encoder *encoder) tegra_hdmi_writel(hdmi, 0, HDMI_NV_PDISP_INT_ENABLE); tegra_hdmi_writel(hdmi, 0, HDMI_NV_PDISP_INT_MASK); - pm_runtime_put(hdmi->dev); + err = host1x_client_suspend(&hdmi->client); + if (err < 0) + dev_err(hdmi->dev, "failed to suspend: %d\n", err); } static void tegra_hdmi_encoder_enable(struct drm_encoder *encoder) @@ -1186,7 +1189,11 @@ static void tegra_hdmi_encoder_enable(struct drm_encoder *encoder) u32 value; int err; - pm_runtime_get_sync(hdmi->dev); + err = host1x_client_resume(&hdmi->client); + if (err < 0) { + dev_err(hdmi->dev, "failed to resume: %d\n", err); + return; + } /* * Enable and unmask the HDA codec SCRATCH0 register interrupt. This @@ -1489,9 +1496,66 @@ static int tegra_hdmi_exit(struct host1x_client *client) return 0; } +static int tegra_hdmi_runtime_suspend(struct host1x_client *client) +{ + struct tegra_hdmi *hdmi = host1x_client_to_hdmi(client); + struct device *dev = client->dev; + int err; + + err = reset_control_assert(hdmi->rst); + if (err < 0) { + dev_err(dev, "failed to assert reset: %d\n", err); + return err; + } + + usleep_range(1000, 2000); + + clk_disable_unprepare(hdmi->clk); + pm_runtime_put_sync(dev); + + return 0; +} + +static int tegra_hdmi_runtime_resume(struct host1x_client *client) +{ + struct tegra_hdmi *hdmi = host1x_client_to_hdmi(client); + struct device *dev = client->dev; + int err; + + err = pm_runtime_get_sync(dev); + if (err < 0) { + dev_err(dev, "failed to get runtime PM: %d\n", err); + return err; + } + + err = clk_prepare_enable(hdmi->clk); + if (err < 0) { + dev_err(dev, "failed to enable clock: %d\n", err); + goto put_rpm; + } + + usleep_range(1000, 2000); + + err = reset_control_deassert(hdmi->rst); + if (err < 0) { + dev_err(dev, "failed to deassert reset: %d\n", err); + goto disable_clk; + } + + return 0; + +disable_clk: + clk_disable_unprepare(hdmi->clk); +put_rpm: + pm_runtime_put_sync(dev); + return err; +} + static const struct host1x_client_ops hdmi_client_ops = { .init = tegra_hdmi_init, .exit = tegra_hdmi_exit, + .suspend = tegra_hdmi_runtime_suspend, + .resume = tegra_hdmi_runtime_resume, }; static const struct tegra_hdmi_config tegra20_hdmi_config = { @@ -1699,58 +1763,10 @@ static int tegra_hdmi_remove(struct platform_device *pdev) return 0; } -#ifdef CONFIG_PM -static int tegra_hdmi_suspend(struct device *dev) -{ - struct tegra_hdmi *hdmi = dev_get_drvdata(dev); - int err; - - err = reset_control_assert(hdmi->rst); - if (err < 0) { - dev_err(dev, "failed to assert reset: %d\n", err); - return err; - } - - usleep_range(1000, 2000); - - clk_disable_unprepare(hdmi->clk); - - return 0; -} - -static int tegra_hdmi_resume(struct device *dev) -{ - struct tegra_hdmi *hdmi = dev_get_drvdata(dev); - int err; - - err = clk_prepare_enable(hdmi->clk); - if (err < 0) { - dev_err(dev, "failed to enable clock: %d\n", err); - return err; - } - - usleep_range(1000, 2000); - - err = reset_control_deassert(hdmi->rst); - if (err < 0) { - dev_err(dev, "failed to deassert reset: %d\n", err); - clk_disable_unprepare(hdmi->clk); - return err; - } - - return 0; -} -#endif - -static const struct dev_pm_ops tegra_hdmi_pm_ops = { - SET_RUNTIME_PM_OPS(tegra_hdmi_suspend, tegra_hdmi_resume, NULL) -}; - struct platform_driver tegra_hdmi_driver = { .driver = { .name = "tegra-hdmi", .of_match_table = tegra_hdmi_of_match, - .pm = &tegra_hdmi_pm_ops, }, .probe = tegra_hdmi_probe, .remove = tegra_hdmi_remove, diff --git a/drivers/gpu/drm/tegra/hub.c b/drivers/gpu/drm/tegra/hub.c index 7d9e1309be3b..8183e617bf6b 100644 --- a/drivers/gpu/drm/tegra/hub.c +++ b/drivers/gpu/drm/tegra/hub.c @@ -95,17 +95,25 @@ static inline void tegra_plane_writel(struct tegra_plane *plane, u32 value, static int tegra_windowgroup_enable(struct tegra_windowgroup *wgrp) { + int err = 0; + mutex_lock(&wgrp->lock); if (wgrp->usecount == 0) { - pm_runtime_get_sync(wgrp->parent); + err = host1x_client_resume(wgrp->parent); + if (err < 0) { + dev_err(wgrp->parent->dev, "failed to resume: %d\n", err); + goto unlock; + } + reset_control_deassert(wgrp->rst); } wgrp->usecount++; - mutex_unlock(&wgrp->lock); - return 0; +unlock: + mutex_unlock(&wgrp->lock); + return err; } static void tegra_windowgroup_disable(struct tegra_windowgroup *wgrp) @@ -121,7 +129,7 @@ static void tegra_windowgroup_disable(struct tegra_windowgroup *wgrp) wgrp->index); } - pm_runtime_put(wgrp->parent); + host1x_client_suspend(wgrp->parent); } wgrp->usecount--; @@ -379,6 +387,7 @@ static void tegra_shared_plane_atomic_disable(struct drm_plane *plane, struct tegra_plane *p = to_tegra_plane(plane); struct tegra_dc *dc; u32 value; + int err; /* rien ne va plus */ if (!old_state || !old_state->crtc) @@ -386,6 +395,12 @@ static void tegra_shared_plane_atomic_disable(struct drm_plane *plane, dc = to_tegra_dc(old_state->crtc); + err = host1x_client_resume(&dc->client); + if (err < 0) { + dev_err(dc->dev, "failed to resume: %d\n", err); + return; + } + /* * XXX Legacy helpers seem to sometimes call ->atomic_disable() even * on planes that are already disabled. Make sure we fallback to the @@ -394,15 +409,13 @@ static void tegra_shared_plane_atomic_disable(struct drm_plane *plane, if (WARN_ON(p->dc == NULL)) p->dc = dc; - pm_runtime_get_sync(dc->dev); - value = tegra_plane_readl(p, DC_WIN_WIN_OPTIONS); value &= ~WIN_ENABLE; tegra_plane_writel(p, value, DC_WIN_WIN_OPTIONS); tegra_dc_remove_shared_plane(dc, p); - pm_runtime_put(dc->dev); + host1x_client_suspend(&dc->client); } static void tegra_shared_plane_atomic_update(struct drm_plane *plane, @@ -415,6 +428,7 @@ static void tegra_shared_plane_atomic_update(struct drm_plane *plane, struct tegra_plane *p = to_tegra_plane(plane); dma_addr_t base; u32 value; + int err; /* rien ne va plus */ if (!plane->state->crtc || !plane->state->fb) @@ -425,7 +439,11 @@ static void tegra_shared_plane_atomic_update(struct drm_plane *plane, return; } - pm_runtime_get_sync(dc->dev); + err = host1x_client_resume(&dc->client); + if (err < 0) { + dev_err(dc->dev, "failed to resume: %d\n", err); + return; + } tegra_dc_assign_shared_plane(dc, p); @@ -515,7 +533,7 @@ static void tegra_shared_plane_atomic_update(struct drm_plane *plane, value &= ~CONTROL_CSC_ENABLE; tegra_plane_writel(p, value, DC_WIN_WINDOW_SET_CONTROL); - pm_runtime_put(dc->dev); + host1x_client_suspend(&dc->client); } static const struct drm_plane_helper_funcs tegra_shared_plane_helper_funcs = { @@ -551,7 +569,7 @@ struct drm_plane *tegra_shared_plane_create(struct drm_device *drm, plane->base.index = index; plane->wgrp = &hub->wgrps[wgrp]; - plane->wgrp->parent = dc->dev; + plane->wgrp->parent = &dc->client; p = &plane->base.base; @@ -656,8 +674,13 @@ int tegra_display_hub_atomic_check(struct drm_device *drm, static void tegra_display_hub_update(struct tegra_dc *dc) { u32 value; + int err; - pm_runtime_get_sync(dc->dev); + err = host1x_client_resume(&dc->client); + if (err < 0) { + dev_err(dc->dev, "failed to resume: %d\n", err); + return; + } value = tegra_dc_readl(dc, DC_CMD_IHUB_COMMON_MISC_CTL); value &= ~LATENCY_EVENT; @@ -672,7 +695,7 @@ static void tegra_display_hub_update(struct tegra_dc *dc) tegra_dc_writel(dc, COMMON_ACTREQ, DC_CMD_STATE_CONTROL); tegra_dc_readl(dc, DC_CMD_STATE_CONTROL); - pm_runtime_put(dc->dev); + host1x_client_suspend(&dc->client); } void tegra_display_hub_atomic_commit(struct drm_device *drm, @@ -732,9 +755,85 @@ static int tegra_display_hub_exit(struct host1x_client *client) return 0; } +static int tegra_display_hub_runtime_suspend(struct host1x_client *client) +{ + struct tegra_display_hub *hub = to_tegra_display_hub(client); + struct device *dev = client->dev; + unsigned int i = hub->num_heads; + int err; + + err = reset_control_assert(hub->rst); + if (err < 0) + return err; + + while (i--) + clk_disable_unprepare(hub->clk_heads[i]); + + clk_disable_unprepare(hub->clk_hub); + clk_disable_unprepare(hub->clk_dsc); + clk_disable_unprepare(hub->clk_disp); + + pm_runtime_put_sync(dev); + + return 0; +} + +static int tegra_display_hub_runtime_resume(struct host1x_client *client) +{ + struct tegra_display_hub *hub = to_tegra_display_hub(client); + struct device *dev = client->dev; + unsigned int i; + int err; + + err = pm_runtime_get_sync(dev); + if (err < 0) { + dev_err(dev, "failed to get runtime PM: %d\n", err); + return err; + } + + err = clk_prepare_enable(hub->clk_disp); + if (err < 0) + goto put_rpm; + + err = clk_prepare_enable(hub->clk_dsc); + if (err < 0) + goto disable_disp; + + err = clk_prepare_enable(hub->clk_hub); + if (err < 0) + goto disable_dsc; + + for (i = 0; i < hub->num_heads; i++) { + err = clk_prepare_enable(hub->clk_heads[i]); + if (err < 0) + goto disable_heads; + } + + err = reset_control_deassert(hub->rst); + if (err < 0) + goto disable_heads; + + return 0; + +disable_heads: + while (i--) + clk_disable_unprepare(hub->clk_heads[i]); + + clk_disable_unprepare(hub->clk_hub); +disable_dsc: + clk_disable_unprepare(hub->clk_dsc); +disable_disp: + clk_disable_unprepare(hub->clk_disp); +put_rpm: + pm_runtime_put_sync(dev); + return err; +} + static const struct host1x_client_ops tegra_display_hub_ops = { .init = tegra_display_hub_init, .exit = tegra_display_hub_exit, + .suspend = tegra_display_hub_runtime_suspend, + .resume = tegra_display_hub_runtime_resume, }; static int tegra_display_hub_probe(struct platform_device *pdev) @@ -851,6 +950,7 @@ static int tegra_display_hub_probe(struct platform_device *pdev) static int tegra_display_hub_remove(struct platform_device *pdev) { struct tegra_display_hub *hub = platform_get_drvdata(pdev); + unsigned int i; int err; err = host1x_client_unregister(&hub->client); @@ -859,78 +959,17 @@ static int tegra_display_hub_remove(struct platform_device *pdev) err); } - pm_runtime_disable(&pdev->dev); - - return err; -} - -static int __maybe_unused tegra_display_hub_suspend(struct device *dev) -{ - struct tegra_display_hub *hub = dev_get_drvdata(dev); - unsigned int i = hub->num_heads; - int err; - - err = reset_control_assert(hub->rst); - if (err < 0) - return err; - - while (i--) - clk_disable_unprepare(hub->clk_heads[i]); - - clk_disable_unprepare(hub->clk_hub); - clk_disable_unprepare(hub->clk_dsc); - clk_disable_unprepare(hub->clk_disp); - - return 0; -} - -static int __maybe_unused tegra_display_hub_resume(struct device *dev) -{ - struct tegra_display_hub *hub = dev_get_drvdata(dev); - unsigned int i; - int err; - - err = clk_prepare_enable(hub->clk_disp); - if (err < 0) - return err; - - err = clk_prepare_enable(hub->clk_dsc); - if (err < 0) - goto disable_disp; - - err = clk_prepare_enable(hub->clk_hub); - if (err < 0) - goto disable_dsc; + for (i = 0; i < hub->soc->num_wgrps; i++) { + struct tegra_windowgroup *wgrp = &hub->wgrps[i]; - for (i = 0; i < hub->num_heads; i++) { - err = clk_prepare_enable(hub->clk_heads[i]); - if (err < 0) - goto disable_heads; + mutex_destroy(&wgrp->lock); } - err = reset_control_deassert(hub->rst); - if (err < 0) - goto disable_heads; - - return 0; - -disable_heads: - while (i--) - clk_disable_unprepare(hub->clk_heads[i]); + pm_runtime_disable(&pdev->dev); - clk_disable_unprepare(hub->clk_hub); -disable_dsc: - clk_disable_unprepare(hub->clk_dsc); -disable_disp: - clk_disable_unprepare(hub->clk_disp); return err; } -static const struct dev_pm_ops tegra_display_hub_pm_ops = { - SET_RUNTIME_PM_OPS(tegra_display_hub_suspend, - tegra_display_hub_resume, NULL) -}; - static const struct tegra_display_hub_soc tegra186_display_hub = { .num_wgrps = 6, .supports_dsc = true, @@ -958,7 +997,6 @@ struct platform_driver tegra_display_hub_driver = { .driver = { .name = "tegra-display-hub", .of_match_table = tegra_display_hub_of_match, - .pm = &tegra_display_hub_pm_ops, }, .probe = tegra_display_hub_probe, .remove = tegra_display_hub_remove, diff --git a/drivers/gpu/drm/tegra/hub.h b/drivers/gpu/drm/tegra/hub.h index 767a60d9313c..3efa1be07ff8 100644 --- a/drivers/gpu/drm/tegra/hub.h +++ b/drivers/gpu/drm/tegra/hub.h @@ -17,7 +17,7 @@ struct tegra_windowgroup { struct mutex lock; unsigned int index; - struct device *parent; + struct host1x_client *parent; struct reset_control *rst; }; diff --git a/drivers/gpu/drm/tegra/sor.c b/drivers/gpu/drm/tegra/sor.c index 956bf5d680ad..200d99e17afe 100644 --- a/drivers/gpu/drm/tegra/sor.c +++ b/drivers/gpu/drm/tegra/sor.c @@ -2255,7 +2255,7 @@ static void tegra_sor_hdmi_disable(struct drm_encoder *encoder) if (err < 0) dev_err(sor->dev, "failed to power off I/O pad: %d\n", err); - pm_runtime_put(sor->dev); + host1x_client_suspend(&sor->client); } static void tegra_sor_hdmi_enable(struct drm_encoder *encoder) @@ -2276,7 +2276,11 @@ static void tegra_sor_hdmi_enable(struct drm_encoder *encoder) mode = &encoder->crtc->state->adjusted_mode; pclk = mode->clock * 1000; - pm_runtime_get_sync(sor->dev); + err = host1x_client_resume(&sor->client); + if (err < 0) { + dev_err(sor->dev, "failed to resume: %d\n", err); + return; + } /* switch to safe parent clock */ err = tegra_sor_set_parent_clock(sor, sor->clk_safe); @@ -2722,7 +2726,7 @@ static void tegra_sor_dp_disable(struct drm_encoder *encoder) if (output->panel) drm_panel_unprepare(output->panel); - pm_runtime_put(sor->dev); + host1x_client_suspend(&sor->client); } static void tegra_sor_dp_enable(struct drm_encoder *encoder) @@ -2742,7 +2746,11 @@ static void tegra_sor_dp_enable(struct drm_encoder *encoder) mode = &encoder->crtc->state->adjusted_mode; info = &output->connector.display_info; - pm_runtime_get_sync(sor->dev); + err = host1x_client_resume(&sor->client); + if (err < 0) { + dev_err(sor->dev, "failed to resume: %d\n", err); + return; + } /* switch to safe parent clock */ err = tegra_sor_set_parent_clock(sor, sor->clk_safe); @@ -3189,9 +3197,80 @@ static int tegra_sor_exit(struct host1x_client *client) return 0; } +static int tegra_sor_runtime_suspend(struct host1x_client *client) +{ + struct tegra_sor *sor = host1x_client_to_sor(client); + struct device *dev = client->dev; + int err; + + if (sor->rst) { + err = reset_control_assert(sor->rst); + if (err < 0) { + dev_err(dev, "failed to assert reset: %d\n", err); + return err; + } + + reset_control_release(sor->rst); + } + + usleep_range(1000, 2000); + + clk_disable_unprepare(sor->clk); + pm_runtime_put_sync(dev); + + return 0; +} + +static int tegra_sor_runtime_resume(struct host1x_client *client) +{ + struct tegra_sor *sor = host1x_client_to_sor(client); + struct device *dev = client->dev; + int err; + + err = pm_runtime_get_sync(dev); + if (err < 0) { + dev_err(dev, "failed to get runtime PM: %d\n", err); + return err; + } + + err = clk_prepare_enable(sor->clk); + if (err < 0) { + dev_err(dev, "failed to enable clock: %d\n", err); + goto put_rpm; + } + + usleep_range(1000, 2000); + + if (sor->rst) { + err = reset_control_acquire(sor->rst); + if (err < 0) { + dev_err(dev, "failed to acquire reset: %d\n", err); + goto disable_clk; + } + + err = reset_control_deassert(sor->rst); + if (err < 0) { + dev_err(dev, "failed to deassert reset: %d\n", err); + goto release_reset; + } + } + + return 0; + +release_reset: + reset_control_release(sor->rst); +disable_clk: + clk_disable_unprepare(sor->clk); +put_rpm: + pm_runtime_put_sync(dev); + return err; +} + static const struct host1x_client_ops sor_client_ops = { .init = tegra_sor_init, .exit = tegra_sor_exit, + .suspend = tegra_sor_runtime_suspend, + .resume = tegra_sor_runtime_resume, }; static const u8 tegra124_sor_xbar_cfg[5] = { @@ -3842,10 +3921,9 @@ static int tegra_sor_probe(struct platform_device *pdev) if (!sor->clk_pad) { char *name; - err = pm_runtime_get_sync(&pdev->dev); + err = host1x_client_resume(&sor->client); if (err < 0) { - dev_err(&pdev->dev, "failed to get runtime PM: %d\n", - err); + dev_err(sor->dev, "failed to resume: %d\n", err); goto remove; } @@ -3856,7 +3934,7 @@ static int tegra_sor_probe(struct platform_device *pdev) } sor->clk_pad = tegra_clk_sor_pad_register(sor, name); - pm_runtime_put(&pdev->dev); + host1x_client_suspend(&sor->client); } if (IS_ERR(sor->clk_pad)) { @@ -3912,61 +3990,6 @@ static int tegra_sor_remove(struct platform_device *pdev) return 0; } -static int tegra_sor_runtime_suspend(struct device *dev) -{ - struct tegra_sor *sor = dev_get_drvdata(dev); - int err; - - if (sor->rst) { - err = reset_control_assert(sor->rst); - if (err < 0) { - dev_err(dev, "failed to assert reset: %d\n", err); - return err; - } - - reset_control_release(sor->rst); - } - - usleep_range(1000, 2000); - - clk_disable_unprepare(sor->clk); - - return 0; -} - -static int tegra_sor_runtime_resume(struct device *dev) -{ - struct tegra_sor *sor = dev_get_drvdata(dev); - int err; - - err = clk_prepare_enable(sor->clk); - if (err < 0) { - dev_err(dev, "failed to enable clock: %d\n", err); - return err; - } - - usleep_range(1000, 2000); - - if (sor->rst) { - err = reset_control_acquire(sor->rst); - if (err < 0) { - dev_err(dev, "failed to acquire reset: %d\n", err); - clk_disable_unprepare(sor->clk); - return err; - } - - err = reset_control_deassert(sor->rst); - if (err < 0) { - dev_err(dev, "failed to deassert reset: %d\n", err); - reset_control_release(sor->rst); - clk_disable_unprepare(sor->clk); - return err; - } - } - - return 0; -} - static int tegra_sor_suspend(struct device *dev) { struct tegra_sor *sor = dev_get_drvdata(dev); @@ -3974,8 +3997,9 @@ static int tegra_sor_suspend(struct device *dev) if (sor->hdmi_supply) { err = regulator_disable(sor->hdmi_supply); - if (err < 0) + if (err < 0) { return err; + } } return 0; @@ -3996,8 +4020,6 @@ static int tegra_sor_resume(struct device *dev) } static const struct dev_pm_ops tegra_sor_pm_ops = { - SET_RUNTIME_PM_OPS(tegra_sor_runtime_suspend, tegra_sor_runtime_resume, - NULL) SET_SYSTEM_SLEEP_PM_OPS(tegra_sor_suspend, tegra_sor_resume) }; diff --git a/drivers/gpu/host1x/bus.c b/drivers/gpu/host1x/bus.c index 50d500345d04..6a995db51d6d 100644 --- a/drivers/gpu/host1x/bus.c +++ b/drivers/gpu/host1x/bus.c @@ -710,6 +710,10 @@ int host1x_client_register(struct host1x_client *client) struct host1x *host1x; int err; + INIT_LIST_HEAD(&client->list); + mutex_init(&client->lock); + client->usecount = 0; + mutex_lock(&devices_lock); list_for_each_entry(host1x, &devices, list) { @@ -768,3 +772,74 @@ int host1x_client_unregister(struct host1x_client *client) return 0; } EXPORT_SYMBOL(host1x_client_unregister); + +int host1x_client_suspend(struct host1x_client *client) +{ + int err = 0; + + mutex_lock(&client->lock); + + if (client->usecount == 1) { + if (client->ops && client->ops->suspend) { + err = client->ops->suspend(client); + if (err < 0) + goto unlock; + } + } + + client->usecount--; + dev_dbg(client->dev, "use count: %u\n", client->usecount); + + if (client->parent) { + err = host1x_client_suspend(client->parent); + if (err < 0) + goto resume; + } + + goto unlock; + +resume: + if (client->usecount == 0) + if (client->ops && client->ops->resume) + client->ops->resume(client); + + client->usecount++; +unlock: + mutex_unlock(&client->lock); + return err; +} +EXPORT_SYMBOL(host1x_client_suspend); + +int host1x_client_resume(struct host1x_client *client) +{ + int err = 0; + + mutex_lock(&client->lock); + + if (client->parent) { + err = host1x_client_resume(client->parent); + if (err < 0) + goto unlock; + } + + if (client->usecount == 0) { + if (client->ops && client->ops->resume) { + err = client->ops->resume(client); + if (err < 0) + goto suspend; + } + } + + client->usecount++; + dev_dbg(client->dev, "use count: %u\n", client->usecount); + + goto unlock; + +suspend: + if (client->parent) + host1x_client_suspend(client->parent); +unlock: + mutex_unlock(&client->lock); + return err; +} +EXPORT_SYMBOL(host1x_client_resume); diff --git a/include/linux/host1x.h b/include/linux/host1x.h index b673d6198e05..325dabe4dd36 100644 --- a/include/linux/host1x.h +++ b/include/linux/host1x.h @@ -24,10 +24,14 @@ struct iommu_group; * struct host1x_client_ops - host1x client operations * @init: host1x client initialization code * @exit: host1x client tear down code + * @suspend: host1x client suspend code + * @resume: host1x client resume code */ struct host1x_client_ops { int (*init)(struct host1x_client *client); int (*exit)(struct host1x_client *client); + int (*suspend)(struct host1x_client *client); + int (*resume)(struct host1x_client *client); }; /** @@ -55,6 +59,10 @@ struct host1x_client { struct host1x_syncpt **syncpts; unsigned int num_syncpts; + + struct host1x_client *parent; + unsigned int usecount; + struct mutex lock; }; /* @@ -322,6 +330,9 @@ int host1x_device_exit(struct host1x_device *device); int host1x_client_register(struct host1x_client *client); int host1x_client_unregister(struct host1x_client *client); +int host1x_client_suspend(struct host1x_client *client); +int host1x_client_resume(struct host1x_client *client); + struct tegra_mipi_device; struct tegra_mipi_device *tegra_mipi_request(struct device *device); -- cgit v1.2.3 From f90965abc51d9a72cd6fa414e9480edff9ddaced Mon Sep 17 00:00:00 2001 From: Arnd Bergmann Date: Tue, 10 Dec 2019 21:42:58 +0100 Subject: drm/tegra: sor: Mark PM functions as __maybe_unused Without CONFIG_PM, some functions cause harmless warnings: drivers/gpu/drm/tegra/sor.c:3984:12: error: 'tegra_sor_resume' defined but not used [-Werror=unused-function] static int tegra_sor_resume(struct device *dev) ^~~~~~~~~~~~~~~~ drivers/gpu/drm/tegra/sor.c:3970:12: error: 'tegra_sor_suspend' defined but not used [-Werror=unused-function] static int tegra_sor_suspend(struct device *dev) ^~~~~~~~~~~~~~~~~ Mark these as __maybe_unused so the compiler can drop them silently. Signed-off-by: Arnd Bergmann Signed-off-by: Thierry Reding --- drivers/gpu/drm/tegra/sor.c | 4 ++-- 1 file changed, 2 insertions(+), 2 deletions(-) (limited to 'drivers/gpu/drm/tegra') diff --git a/drivers/gpu/drm/tegra/sor.c b/drivers/gpu/drm/tegra/sor.c index 200d99e17afe..4885f7d69a76 100644 --- a/drivers/gpu/drm/tegra/sor.c +++ b/drivers/gpu/drm/tegra/sor.c @@ -3990,7 +3990,7 @@ static int tegra_sor_remove(struct platform_device *pdev) return 0; } -static int tegra_sor_suspend(struct device *dev) +static int __maybe_unused tegra_sor_suspend(struct device *dev) { struct tegra_sor *sor = dev_get_drvdata(dev); int err; @@ -4005,7 +4005,7 @@ static int tegra_sor_suspend(struct device *dev) return 0; } -static int tegra_sor_resume(struct device *dev) +static int __maybe_unused tegra_sor_resume(struct device *dev) { struct tegra_sor *sor = dev_get_drvdata(dev); int err; -- cgit v1.2.3 From 271502efbd3a9812f3d02230ff823b73141c6b39 Mon Sep 17 00:00:00 2001 From: Thierry Reding Date: Tue, 3 Dec 2019 17:29:57 +0100 Subject: drm/tegra: output: Implement system suspend/resume Implement generic system suspend/resume functions that can be used with any output type. Currently this only implements disabling and enabling of the IRQ functionality across system suspend/resume. This prevents an interrupt from happening before the display driver has fully resumed. Signed-off-by: Thierry Reding --- drivers/gpu/drm/tegra/output.c | 16 ++++++++++++++++ drivers/gpu/drm/tegra/sor.c | 17 +++++++++++++++++ 2 files changed, 33 insertions(+) (limited to 'drivers/gpu/drm/tegra') diff --git a/drivers/gpu/drm/tegra/output.c b/drivers/gpu/drm/tegra/output.c index 34373734ff68..57203030dd02 100644 --- a/drivers/gpu/drm/tegra/output.c +++ b/drivers/gpu/drm/tegra/output.c @@ -250,3 +250,19 @@ void tegra_output_find_possible_crtcs(struct tegra_output *output, output->encoder.possible_crtcs = mask; } + +int tegra_output_suspend(struct tegra_output *output) +{ + if (output->hpd_irq) + disable_irq(output->hpd_irq); + + return 0; +} + +int tegra_output_resume(struct tegra_output *output) +{ + if (output->hpd_irq) + enable_irq(output->hpd_irq); + + return 0; +} diff --git a/drivers/gpu/drm/tegra/sor.c b/drivers/gpu/drm/tegra/sor.c index 4885f7d69a76..f884185c5e9f 100644 --- a/drivers/gpu/drm/tegra/sor.c +++ b/drivers/gpu/drm/tegra/sor.c @@ -3995,9 +3995,16 @@ static int __maybe_unused tegra_sor_suspend(struct device *dev) struct tegra_sor *sor = dev_get_drvdata(dev); int err; + err = tegra_output_suspend(&sor->output); + if (err < 0) { + dev_err(dev, "failed to suspend output: %d\n", err); + return err; + } + if (sor->hdmi_supply) { err = regulator_disable(sor->hdmi_supply); if (err < 0) { + tegra_output_resume(&sor->output); return err; } } @@ -4016,6 +4023,16 @@ static int __maybe_unused tegra_sor_resume(struct device *dev) return err; } + err = tegra_output_resume(&sor->output); + if (err < 0) { + dev_err(dev, "failed to resume output: %d\n", err); + + if (sor->hdmi_supply) + regulator_disable(sor->hdmi_supply); + + return err; + } + return 0; } -- cgit v1.2.3