[PATCH 02/16] Revert "drm/amd: cleanup: drm_modeset_lock_all() --> DRM_MODESET_LOCK_ALL_BEGIN()"

[Sean Paul <sean@poorly.run>]

From: Sean Paul <seanpaul@chromium.org>

This reverts commit 299f040e855b69c29522cde446777902381a07f5.

This patchset breaks on intel platforms and was previously NACK'd by
Ville.

Cc: Ville Syrjälä <ville.syrjala@linux.intel.com>
Cc: Fernando Ramos <greenfoo@u92.eu>
Signed-off-by: Sean Paul <seanpaul@chromium.org>
---
 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, 43 insertions(+), 53 deletions(-)

diff --git a/drivers/gpu/drm/amd/amdgpu/amdgpu_display.c b/drivers/gpu/drm/amd/amdgpu/amdgpu_display.c
index b07e845a2600..7a7316731911 100644
--- a/drivers/gpu/drm/amd/amdgpu/amdgpu_display.c
+++ b/drivers/gpu/drm/amd/amdgpu/amdgpu_display.c
@@ -40,7 +40,6 @@
 #include <drm/drm_fb_helper.h>
 #include <drm/drm_fourcc.h>
 #include <drm/drm_vblank.h>
-#include <drm/drm_drv.h>
 
 static void amdgpu_display_flip_callback(struct dma_fence *f,
 					 struct dma_fence_cb *cb)
@@ -1544,21 +1543,16 @@ int amdgpu_display_suspend_helper(struct amdgpu_device *adev)
 	struct drm_crtc *crtc;
 	struct drm_connector *connector;
 	struct drm_connector_list_iter iter;
-	struct drm_modeset_acquire_ctx ctx;
-	int r, ret;
+	int r;
 
 	/* turn off display hw */
-	DRM_MODESET_LOCK_ALL_BEGIN(dev, ctx, 0, ret);
+	drm_modeset_lock_all(dev);
 	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_LOCK_ALL_END(dev, ctx, ret);
-
-	if (ret)
-		return ret;
-
+	drm_modeset_unlock_all(dev);
 	/* 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);
@@ -1596,8 +1590,7 @@ int amdgpu_display_resume_helper(struct amdgpu_device *adev)
 	struct drm_connector *connector;
 	struct drm_connector_list_iter iter;
 	struct drm_crtc *crtc;
-	struct drm_modeset_acquire_ctx ctx;
-	int r, ret;
+	int r;
 
 	/* pin cursors */
 	list_for_each_entry(crtc, &dev->mode_config.crtc_list, head) {
@@ -1619,7 +1612,7 @@ int amdgpu_display_resume_helper(struct amdgpu_device *adev)
 	drm_helper_resume_force_mode(dev);
 
 	/* turn on display hw */
-	DRM_MODESET_LOCK_ALL_BEGIN(dev, ctx, 0, ret);
+	drm_modeset_lock_all(dev);
 
 	drm_connector_list_iter_begin(dev, &iter);
 	drm_for_each_connector_iter(connector, &iter)
@@ -1627,8 +1620,8 @@ int amdgpu_display_resume_helper(struct amdgpu_device *adev)
 					  DRM_MODE_DPMS_ON);
 	drm_connector_list_iter_end(&iter);
 
-	DRM_MODESET_LOCK_ALL_END(dev, ctx, ret);
+	drm_modeset_unlock_all(dev);
 
-	return ret;
+	return 0;
 }
 
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 5196c1d26f87..9b1fc54555ee 100644
--- a/drivers/gpu/drm/amd/display/amdgpu_dm/amdgpu_dm.c
+++ b/drivers/gpu/drm/amd/display/amdgpu_dm/amdgpu_dm.c
@@ -80,7 +80,6 @@
 #include <drm/drm_edid.h>
 #include <drm/drm_vblank.h>
 #include <drm/drm_audio_component.h>
-#include <drm/drm_drv.h>
 
 #if defined(CONFIG_DRM_AMD_DC_DCN)
 #include "ivsrcid/dcn/irqsrcs_dcn_1_0.h"
@@ -2622,9 +2621,6 @@ 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;
@@ -2650,6 +2646,14 @@ 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)
@@ -2657,18 +2661,13 @@ static void handle_hpd_irq(void *param)
 
 		amdgpu_dm_update_connector_after_detect(aconnector);
 
-	} 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);
+		drm_modeset_lock_all(dev);
+		dm_restore_drm_connector_state(dev, connector);
+		drm_modeset_unlock_all(dev);
 
-out:
+		if (aconnector->base.force == DRM_FORCE_UNSPECIFIED)
+			drm_kms_helper_hotplug_event(dev);
+	}
 	mutex_unlock(&aconnector->hpd_lock);
 
 }
@@ -2757,14 +2756,12 @@ 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));
 
@@ -2831,6 +2828,12 @@ 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)
@@ -2838,17 +2841,14 @@ static void handle_hpd_rx_irq(void *param)
 
 			amdgpu_dm_update_connector_after_detect(aconnector);
 
-		} else {
-			goto finish;
-		}
 
-		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_modeset_lock_all(dev);
+			dm_restore_drm_connector_state(dev, connector);
+			drm_modeset_unlock_all(dev);
 
-		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 fb7b56fa2673..87daa78a32b8 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
@@ -24,7 +24,6 @@
  */
 
 #include <linux/uaccess.h>
-#include <drm/drm_drv.h>
 
 #include "dc.h"
 #include "amdgpu.h"
@@ -1192,14 +1191,12 @@ 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;
@@ -1239,6 +1236,12 @@ 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;
@@ -1256,18 +1259,12 @@ static ssize_t trigger_hotplug(struct file *f, const char __user *buf,
 
 		amdgpu_dm_update_connector_after_detect(aconnector);
 
-	} 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_modeset_lock_all(dev);
+		dm_restore_drm_connector_state(dev, connector);
+		drm_modeset_unlock_all(dev);
 
-	drm_kms_helper_hotplug_event(dev);
+		drm_kms_helper_hotplug_event(dev);
+	}
 
 unlock:
 	mutex_unlock(&aconnector->hpd_lock);
-- 
Sean Paul, Software Engineer, Google / Chromium OS