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Fri, 24 Sep 2021 02:44:14 -0400 (EDT) From: Fernando Ramos To: dri-devel@lists.freedesktop.org Cc: linux-kernel@vger.kernel.org, sean@poorly.run, linux-doc@vger.kernel.org, amd-gfx@lists.freedesktop.org, intel-gfx@lists.freedesktop.org, linux-arm-msm@vger.kernel.org, freedreno@lists.freedesktop.org, nouveau@lists.freedesktop.org, linux-renesas-soc@vger.kernel.org, linux-tegra@vger.kernel.org Subject: [PATCH v2 15/17] drm/amd: cleanup: drm_modeset_lock_all() --> DRM_MODESET_LOCK_ALL_BEGIN() Date: Fri, 24 Sep 2021 08:43:22 +0200 Message-Id: <20210924064324.229457-16-greenfoo@u92.eu> X-Mailer: git-send-email 2.33.0 In-Reply-To: <20210924064324.229457-1-greenfoo@u92.eu> References: <20210924064324.229457-1-greenfoo@u92.eu> MIME-Version: 1.0 Precedence: bulk List-ID: X-Mailing-List: linux-renesas-soc@vger.kernel.org As requested in Documentation/gpu/todo.rst, replace driver calls to drm_modeset_lock_all() with DRM_MODESET_LOCK_ALL_BEGIN() and DRM_MODESET_LOCK_ALL_END() Signed-off-by: Fernando Ramos --- drivers/gpu/drm/amd/amdgpu/amdgpu_display.c | 21 +++++--- .../gpu/drm/amd/display/amdgpu_dm/amdgpu_dm.c | 50 +++++++++---------- .../amd/display/amdgpu_dm/amdgpu_dm_debugfs.c | 25 ++++++---- 3 files changed, 53 insertions(+), 43 deletions(-) diff --git a/drivers/gpu/drm/amd/amdgpu/amdgpu_display.c b/drivers/gpu/drm/amd/amdgpu/amdgpu_display.c index 7a7316731911..b07e845a2600 100644 --- a/drivers/gpu/drm/amd/amdgpu/amdgpu_display.c +++ b/drivers/gpu/drm/amd/amdgpu/amdgpu_display.c @@ -40,6 +40,7 @@ #include #include #include +#include static void amdgpu_display_flip_callback(struct dma_fence *f, struct dma_fence_cb *cb) @@ -1543,16 +1544,21 @@ int amdgpu_display_suspend_helper(struct amdgpu_device *adev) struct drm_crtc *crtc; struct drm_connector *connector; struct drm_connector_list_iter iter; - int r; + struct drm_modeset_acquire_ctx ctx; + int r, ret; /* turn off display hw */ - drm_modeset_lock_all(dev); + DRM_MODESET_LOCK_ALL_BEGIN(dev, ctx, 0, ret); drm_connector_list_iter_begin(dev, &iter); drm_for_each_connector_iter(connector, &iter) drm_helper_connector_dpms(connector, DRM_MODE_DPMS_OFF); drm_connector_list_iter_end(&iter); - drm_modeset_unlock_all(dev); + DRM_MODESET_LOCK_ALL_END(dev, ctx, ret); + + if (ret) + return ret; + /* unpin the front buffers and cursors */ list_for_each_entry(crtc, &dev->mode_config.crtc_list, head) { struct amdgpu_crtc *amdgpu_crtc = to_amdgpu_crtc(crtc); @@ -1590,7 +1596,8 @@ int amdgpu_display_resume_helper(struct amdgpu_device *adev) struct drm_connector *connector; struct drm_connector_list_iter iter; struct drm_crtc *crtc; - int r; + struct drm_modeset_acquire_ctx ctx; + int r, ret; /* pin cursors */ list_for_each_entry(crtc, &dev->mode_config.crtc_list, head) { @@ -1612,7 +1619,7 @@ int amdgpu_display_resume_helper(struct amdgpu_device *adev) drm_helper_resume_force_mode(dev); /* turn on display hw */ - drm_modeset_lock_all(dev); + DRM_MODESET_LOCK_ALL_BEGIN(dev, ctx, 0, ret); drm_connector_list_iter_begin(dev, &iter); drm_for_each_connector_iter(connector, &iter) @@ -1620,8 +1627,8 @@ int amdgpu_display_resume_helper(struct amdgpu_device *adev) DRM_MODE_DPMS_ON); drm_connector_list_iter_end(&iter); - drm_modeset_unlock_all(dev); + DRM_MODESET_LOCK_ALL_END(dev, ctx, ret); - return 0; + return ret; } diff --git a/drivers/gpu/drm/amd/display/amdgpu_dm/amdgpu_dm.c b/drivers/gpu/drm/amd/display/amdgpu_dm/amdgpu_dm.c index 9b1fc54555ee..5196c1d26f87 100644 --- a/drivers/gpu/drm/amd/display/amdgpu_dm/amdgpu_dm.c +++ b/drivers/gpu/drm/amd/display/amdgpu_dm/amdgpu_dm.c @@ -80,6 +80,7 @@ #include #include #include +#include #if defined(CONFIG_DRM_AMD_DC_DCN) #include "ivsrcid/dcn/irqsrcs_dcn_1_0.h" @@ -2621,6 +2622,9 @@ static void handle_hpd_irq(void *param) #ifdef CONFIG_DRM_AMD_DC_HDCP struct dm_connector_state *dm_con_state = to_dm_connector_state(connector->state); #endif + struct drm_modeset_acquire_ctx ctx; + int ret; + if (adev->dm.disable_hpd_irq) return; @@ -2646,14 +2650,6 @@ static void handle_hpd_irq(void *param) if (aconnector->base.force && new_connection_type == dc_connection_none) { emulated_link_detect(aconnector->dc_link); - - drm_modeset_lock_all(dev); - dm_restore_drm_connector_state(dev, connector); - drm_modeset_unlock_all(dev); - - if (aconnector->base.force == DRM_FORCE_UNSPECIFIED) - drm_kms_helper_hotplug_event(dev); - } else if (dc_link_detect(aconnector->dc_link, DETECT_REASON_HPD)) { if (new_connection_type == dc_connection_none && aconnector->dc_link->type == dc_connection_none) @@ -2661,13 +2657,18 @@ static void handle_hpd_irq(void *param) amdgpu_dm_update_connector_after_detect(aconnector); - drm_modeset_lock_all(dev); - dm_restore_drm_connector_state(dev, connector); - drm_modeset_unlock_all(dev); - - if (aconnector->base.force == DRM_FORCE_UNSPECIFIED) - drm_kms_helper_hotplug_event(dev); + } else { + goto out; } + + DRM_MODESET_LOCK_ALL_BEGIN(dev, ctx, 0, ret); + dm_restore_drm_connector_state(dev, connector); + DRM_MODESET_LOCK_ALL_END(dev, ctx, ret); + + if (aconnector->base.force == DRM_FORCE_UNSPECIFIED) + drm_kms_helper_hotplug_event(dev); + +out: mutex_unlock(&aconnector->hpd_lock); } @@ -2756,12 +2757,14 @@ static void handle_hpd_rx_irq(void *param) struct drm_connector *connector = &aconnector->base; struct drm_device *dev = connector->dev; struct dc_link *dc_link = aconnector->dc_link; + struct drm_modeset_acquire_ctx ctx; bool is_mst_root_connector = aconnector->mst_mgr.mst_state; bool result = false; enum dc_connection_type new_connection_type = dc_connection_none; struct amdgpu_device *adev = drm_to_adev(dev); union hpd_irq_data hpd_irq_data; bool lock_flag = 0; + int ret; memset(&hpd_irq_data, 0, sizeof(hpd_irq_data)); @@ -2828,12 +2831,6 @@ static void handle_hpd_rx_irq(void *param) amdgpu_dm_update_connector_after_detect(aconnector); - - drm_modeset_lock_all(dev); - dm_restore_drm_connector_state(dev, connector); - drm_modeset_unlock_all(dev); - - drm_kms_helper_hotplug_event(dev); } else if (dc_link_detect(dc_link, DETECT_REASON_HPDRX)) { if (aconnector->fake_enable) @@ -2841,14 +2838,17 @@ static void handle_hpd_rx_irq(void *param) amdgpu_dm_update_connector_after_detect(aconnector); + } else { + goto finish; + } - drm_modeset_lock_all(dev); - dm_restore_drm_connector_state(dev, connector); - drm_modeset_unlock_all(dev); + DRM_MODESET_LOCK_ALL_BEGIN(dev, ctx, 0, ret); + dm_restore_drm_connector_state(dev, connector); + DRM_MODESET_LOCK_ALL_END(dev, ctx, ret); - drm_kms_helper_hotplug_event(dev); - } + drm_kms_helper_hotplug_event(dev); } +finish: #ifdef CONFIG_DRM_AMD_DC_HDCP if (hpd_irq_data.bytes.device_service_irq.bits.CP_IRQ) { if (adev->dm.hdcp_workqueue) diff --git a/drivers/gpu/drm/amd/display/amdgpu_dm/amdgpu_dm_debugfs.c b/drivers/gpu/drm/amd/display/amdgpu_dm/amdgpu_dm_debugfs.c index 87daa78a32b8..fb7b56fa2673 100644 --- a/drivers/gpu/drm/amd/display/amdgpu_dm/amdgpu_dm_debugfs.c +++ b/drivers/gpu/drm/amd/display/amdgpu_dm/amdgpu_dm_debugfs.c @@ -24,6 +24,7 @@ */ #include +#include #include "dc.h" #include "amdgpu.h" @@ -1191,12 +1192,14 @@ static ssize_t trigger_hotplug(struct file *f, const char __user *buf, struct drm_connector *connector = &aconnector->base; struct dc_link *link = NULL; struct drm_device *dev = connector->dev; + struct drm_modeset_acquire_ctx ctx; enum dc_connection_type new_connection_type = dc_connection_none; char *wr_buf = NULL; uint32_t wr_buf_size = 42; int max_param_num = 1; long param[1] = {0}; uint8_t param_nums = 0; + int ret; if (!aconnector || !aconnector->dc_link) return -EINVAL; @@ -1236,12 +1239,6 @@ static ssize_t trigger_hotplug(struct file *f, const char __user *buf, goto unlock; amdgpu_dm_update_connector_after_detect(aconnector); - - drm_modeset_lock_all(dev); - dm_restore_drm_connector_state(dev, connector); - drm_modeset_unlock_all(dev); - - drm_kms_helper_hotplug_event(dev); } else if (param[0] == 0) { if (!aconnector->dc_link) goto unlock; @@ -1259,13 +1256,19 @@ static ssize_t trigger_hotplug(struct file *f, const char __user *buf, amdgpu_dm_update_connector_after_detect(aconnector); - drm_modeset_lock_all(dev); - dm_restore_drm_connector_state(dev, connector); - drm_modeset_unlock_all(dev); - - drm_kms_helper_hotplug_event(dev); + } else { + goto unlock; } + DRM_MODESET_LOCK_ALL_BEGIN(dev, ctx, 0, ret); + dm_restore_drm_connector_state(dev, connector); + DRM_MODESET_LOCK_ALL_END(dev, ctx, ret); + + if (ret) + return ret; + + drm_kms_helper_hotplug_event(dev); + unlock: mutex_unlock(&aconnector->hpd_lock);