Merge branch 'fix/intel' of https://git.kernel.org/pub/scm/linux/kernel/git/broonie/sound into asoc-intel

1 files changed, 755 insertions, 0 deletions

diff --git a/drivers/gpu/drm/amd/display/amdgpu_dm/amdgpu_dm_irq.c b/drivers/gpu/drm/amd/display/amdgpu_dm/amdgpu_dm_irq.c
new file mode 100644
index 000000000000..ca5d0d1581dc
--- /dev/null
+++ b/drivers/gpu/drm/amd/display/amdgpu_dm/amdgpu_dm_irq.c
@@ -0,0 +1,755 @@
+/*
+ * Copyright 2015 Advanced Micro Devices, Inc.
+ *
+ * Permission is hereby granted, free of charge, to any person obtaining a
+ * copy of this software and associated documentation files (the "Software"),
+ * to deal in the Software without restriction, including without limitation
+ * the rights to use, copy, modify, merge, publish, distribute, sublicense,
+ * and/or sell copies of the Software, and to permit persons to whom the
+ * Software is furnished to do so, subject to the following conditions:
+ *
+ * The above copyright notice and this permission notice shall be included in
+ * all copies or substantial portions of the Software.
+ *
+ * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
+ * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
+ * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT.  IN NO EVENT SHALL
+ * THE COPYRIGHT HOLDER(S) OR AUTHOR(S) BE LIABLE FOR ANY CLAIM, DAMAGES OR
+ * OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE,
+ * ARISING FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR
+ * OTHER DEALINGS IN THE SOFTWARE.
+ *
+ * Authors: AMD
+ *
+ */
+
+#include <drm/drmP.h>
+
+#include "dm_services_types.h"
+#include "dc.h"
+
+#include "amdgpu.h"
+#include "amdgpu_dm.h"
+#include "amdgpu_dm_irq.h"
+
+/******************************************************************************
+ * Private declarations.
+ *****************************************************************************/
+
+struct handler_common_data {
+	struct list_head list;
+	interrupt_handler handler;
+	void *handler_arg;
+
+	/* DM which this handler belongs to */
+	struct amdgpu_display_manager *dm;
+};
+
+struct amdgpu_dm_irq_handler_data {
+	struct handler_common_data hcd;
+	/* DAL irq source which registered for this interrupt. */
+	enum dc_irq_source irq_source;
+};
+
+struct amdgpu_dm_timer_handler_data {
+	struct handler_common_data hcd;
+	struct delayed_work d_work;
+};
+
+#define DM_IRQ_TABLE_LOCK(adev, flags) \
+	spin_lock_irqsave(&adev->dm.irq_handler_list_table_lock, flags)
+
+#define DM_IRQ_TABLE_UNLOCK(adev, flags) \
+	spin_unlock_irqrestore(&adev->dm.irq_handler_list_table_lock, flags)
+
+/******************************************************************************
+ * Private functions.
+ *****************************************************************************/
+
+static void init_handler_common_data(struct handler_common_data *hcd,
+				     void (*ih)(void *),
+				     void *args,
+				     struct amdgpu_display_manager *dm)
+{
+	hcd->handler = ih;
+	hcd->handler_arg = args;
+	hcd->dm = dm;
+}
+
+/**
+ * dm_irq_work_func - Handle an IRQ outside of the interrupt handler proper.
+ *
+ * @work: work struct
+ */
+static void dm_irq_work_func(struct work_struct *work)
+{
+	struct list_head *entry;
+	struct irq_list_head *irq_list_head =
+		container_of(work, struct irq_list_head, work);
+	struct list_head *handler_list = &irq_list_head->head;
+	struct amdgpu_dm_irq_handler_data *handler_data;
+
+	list_for_each(entry, handler_list) {
+		handler_data =
+			list_entry(
+				entry,
+				struct amdgpu_dm_irq_handler_data,
+				hcd.list);
+
+		DRM_DEBUG_KMS("DM_IRQ: work_func: for dal_src=%d\n",
+				handler_data->irq_source);
+
+		DRM_DEBUG_KMS("DM_IRQ: schedule_work: for dal_src=%d\n",
+			handler_data->irq_source);
+
+		handler_data->hcd.handler(handler_data->hcd.handler_arg);
+	}
+
+	/* Call a DAL subcomponent which registered for interrupt notification
+	 * at INTERRUPT_LOW_IRQ_CONTEXT.
+	 * (The most common use is HPD interrupt) */
+}
+
+/**
+ * Remove a handler and return a pointer to hander list from which the
+ * handler was removed.
+ */
+static struct list_head *remove_irq_handler(struct amdgpu_device *adev,
+					    void *ih,
+					    const struct dc_interrupt_params *int_params)
+{
+	struct list_head *hnd_list;
+	struct list_head *entry, *tmp;
+	struct amdgpu_dm_irq_handler_data *handler;
+	unsigned long irq_table_flags;
+	bool handler_removed = false;
+	enum dc_irq_source irq_source;
+
+	DM_IRQ_TABLE_LOCK(adev, irq_table_flags);
+
+	irq_source = int_params->irq_source;
+
+	switch (int_params->int_context) {
+	case INTERRUPT_HIGH_IRQ_CONTEXT:
+		hnd_list = &adev->dm.irq_handler_list_high_tab[irq_source];
+		break;
+	case INTERRUPT_LOW_IRQ_CONTEXT:
+	default:
+		hnd_list = &adev->dm.irq_handler_list_low_tab[irq_source].head;
+		break;
+	}
+
+	list_for_each_safe(entry, tmp, hnd_list) {
+
+		handler = list_entry(entry, struct amdgpu_dm_irq_handler_data,
+				hcd.list);
+
+		if (ih == handler) {
+			/* Found our handler. Remove it from the list. */
+			list_del(&handler->hcd.list);
+			handler_removed = true;
+			break;
+		}
+	}
+
+	DM_IRQ_TABLE_UNLOCK(adev, irq_table_flags);
+
+	if (handler_removed == false) {
+		/* Not necessarily an error - caller may not
+		 * know the context. */
+		return NULL;
+	}
+
+	kfree(handler);
+
+	DRM_DEBUG_KMS(
+	"DM_IRQ: removed irq handler: %p for: dal_src=%d, irq context=%d\n",
+		ih, int_params->irq_source, int_params->int_context);
+
+	return hnd_list;
+}
+
+/* If 'handler_in == NULL' then remove ALL handlers. */
+static void remove_timer_handler(struct amdgpu_device *adev,
+				 struct amdgpu_dm_timer_handler_data *handler_in)
+{
+	struct amdgpu_dm_timer_handler_data *handler_temp;
+	struct list_head *handler_list;
+	struct list_head *entry, *tmp;
+	unsigned long irq_table_flags;
+	bool handler_removed = false;
+
+	DM_IRQ_TABLE_LOCK(adev, irq_table_flags);
+
+	handler_list = &adev->dm.timer_handler_list;
+
+	list_for_each_safe(entry, tmp, handler_list) {
+		/* Note that list_for_each_safe() guarantees that
+		 * handler_temp is NOT null. */
+		handler_temp = list_entry(entry,
+				struct amdgpu_dm_timer_handler_data, hcd.list);
+
+		if (handler_in == NULL || handler_in == handler_temp) {
+			list_del(&handler_temp->hcd.list);
+			DM_IRQ_TABLE_UNLOCK(adev, irq_table_flags);
+
+			DRM_DEBUG_KMS("DM_IRQ: removing timer handler: %p\n",
+					handler_temp);
+
+			if (handler_in == NULL) {
+				/* Since it is still in the queue, it must
+				 * be cancelled. */
+				cancel_delayed_work_sync(&handler_temp->d_work);
+			}
+
+			kfree(handler_temp);
+			handler_removed = true;
+
+			DM_IRQ_TABLE_LOCK(adev, irq_table_flags);
+		}
+
+		/* Remove ALL handlers. */
+		if (handler_in == NULL)
+			continue;
+
+		/* Remove a SPECIFIC handler.
+		 * Found our handler - we can stop here. */
+		if (handler_in == handler_temp)
+			break;
+	}
+
+	DM_IRQ_TABLE_UNLOCK(adev, irq_table_flags);
+
+	if (handler_in != NULL && handler_removed == false)
+		DRM_ERROR("DM_IRQ: handler: %p is not in the list!\n",
+				handler_in);
+}
+
+static bool
+validate_irq_registration_params(struct dc_interrupt_params *int_params,
+				 void (*ih)(void *))
+{
+	if (NULL == int_params || NULL == ih) {
+		DRM_ERROR("DM_IRQ: invalid input!\n");
+		return false;
+	}
+
+	if (int_params->int_context >= INTERRUPT_CONTEXT_NUMBER) {
+		DRM_ERROR("DM_IRQ: invalid context: %d!\n",
+				int_params->int_context);
+		return false;
+	}
+
+	if (!DAL_VALID_IRQ_SRC_NUM(int_params->irq_source)) {
+		DRM_ERROR("DM_IRQ: invalid irq_source: %d!\n",
+				int_params->irq_source);
+		return false;
+	}
+
+	return true;
+}
+
+static bool validate_irq_unregistration_params(enum dc_irq_source irq_source,
+					       irq_handler_idx handler_idx)
+{
+	if (DAL_INVALID_IRQ_HANDLER_IDX == handler_idx) {
+		DRM_ERROR("DM_IRQ: invalid handler_idx==NULL!\n");
+		return false;
+	}
+
+	if (!DAL_VALID_IRQ_SRC_NUM(irq_source)) {
+		DRM_ERROR("DM_IRQ: invalid irq_source:%d!\n", irq_source);
+		return false;
+	}
+
+	return true;
+}
+/******************************************************************************
+ * Public functions.
+ *
+ * Note: caller is responsible for input validation.
+ *****************************************************************************/
+
+void *amdgpu_dm_irq_register_interrupt(struct amdgpu_device *adev,
+				       struct dc_interrupt_params *int_params,
+				       void (*ih)(void *),
+				       void *handler_args)
+{
+	struct list_head *hnd_list;
+	struct amdgpu_dm_irq_handler_data *handler_data;
+	unsigned long irq_table_flags;
+	enum dc_irq_source irq_source;
+
+	if (false == validate_irq_registration_params(int_params, ih))
+		return DAL_INVALID_IRQ_HANDLER_IDX;
+
+	handler_data = kzalloc(sizeof(*handler_data), GFP_KERNEL);
+	if (!handler_data) {
+		DRM_ERROR("DM_IRQ: failed to allocate irq handler!\n");
+		return DAL_INVALID_IRQ_HANDLER_IDX;
+	}
+
+	memset(handler_data, 0, sizeof(*handler_data));
+
+	init_handler_common_data(&handler_data->hcd, ih, handler_args,
+			&adev->dm);
+
+	irq_source = int_params->irq_source;
+
+	handler_data->irq_source = irq_source;
+
+	/* Lock the list, add the handler. */
+	DM_IRQ_TABLE_LOCK(adev, irq_table_flags);
+
+	switch (int_params->int_context) {
+	case INTERRUPT_HIGH_IRQ_CONTEXT:
+		hnd_list = &adev->dm.irq_handler_list_high_tab[irq_source];
+		break;
+	case INTERRUPT_LOW_IRQ_CONTEXT:
+	default:
+		hnd_list = &adev->dm.irq_handler_list_low_tab[irq_source].head;
+		break;
+	}
+
+	list_add_tail(&handler_data->hcd.list, hnd_list);
+
+	DM_IRQ_TABLE_UNLOCK(adev, irq_table_flags);
+
+	/* This pointer will be stored by code which requested interrupt
+	 * registration.
+	 * The same pointer will be needed in order to unregister the
+	 * interrupt. */
+
+	DRM_DEBUG_KMS(
+		"DM_IRQ: added irq handler: %p for: dal_src=%d, irq context=%d\n",
+		handler_data,
+		irq_source,
+		int_params->int_context);
+
+	return handler_data;
+}
+
+void amdgpu_dm_irq_unregister_interrupt(struct amdgpu_device *adev,
+					enum dc_irq_source irq_source,
+					void *ih)
+{
+	struct list_head *handler_list;
+	struct dc_interrupt_params int_params;
+	int i;
+
+	if (false == validate_irq_unregistration_params(irq_source, ih))
+		return;
+
+	memset(&int_params, 0, sizeof(int_params));
+
+	int_params.irq_source = irq_source;
+
+	for (i = 0; i < INTERRUPT_CONTEXT_NUMBER; i++) {
+
+		int_params.int_context = i;
+
+		handler_list = remove_irq_handler(adev, ih, &int_params);
+
+		if (handler_list != NULL)
+			break;
+	}
+
+	if (handler_list == NULL) {
+		/* If we got here, it means we searched all irq contexts
+		 * for this irq source, but the handler was not found. */
+		DRM_ERROR(
+		"DM_IRQ: failed to find irq handler:%p for irq_source:%d!\n",
+			ih, irq_source);
+	}
+}
+
+int amdgpu_dm_irq_init(struct amdgpu_device *adev)
+{
+	int src;
+	struct irq_list_head *lh;
+
+	DRM_DEBUG_KMS("DM_IRQ\n");
+
+	spin_lock_init(&adev->dm.irq_handler_list_table_lock);
+
+	for (src = 0; src < DAL_IRQ_SOURCES_NUMBER; src++) {
+		/* low context handler list init */
+		lh = &adev->dm.irq_handler_list_low_tab[src];
+		INIT_LIST_HEAD(&lh->head);
+		INIT_WORK(&lh->work, dm_irq_work_func);
+
+		/* high context handler init */
+		INIT_LIST_HEAD(&adev->dm.irq_handler_list_high_tab[src]);
+	}
+
+	INIT_LIST_HEAD(&adev->dm.timer_handler_list);
+
+	/* allocate and initialize the workqueue for DM timer */
+	adev->dm.timer_workqueue = create_singlethread_workqueue(
+			"dm_timer_queue");
+	if (adev->dm.timer_workqueue == NULL) {
+		DRM_ERROR("DM_IRQ: unable to create timer queue!\n");
+		return -1;
+	}
+
+	return 0;
+}
+
+/* DM IRQ and timer resource release */
+void amdgpu_dm_irq_fini(struct amdgpu_device *adev)
+{
+	int src;
+	struct irq_list_head *lh;
+	DRM_DEBUG_KMS("DM_IRQ: releasing resources.\n");
+
+	for (src = 0; src < DAL_IRQ_SOURCES_NUMBER; src++) {
+
+		/* The handler was removed from the table,
+		 * it means it is safe to flush all the 'work'
+		 * (because no code can schedule a new one). */
+		lh = &adev->dm.irq_handler_list_low_tab[src];
+		flush_work(&lh->work);
+	}
+
+	/* Cancel ALL timers and release handlers (if any). */
+	remove_timer_handler(adev, NULL);
+	/* Release the queue itself. */
+	destroy_workqueue(adev->dm.timer_workqueue);
+}
+
+int amdgpu_dm_irq_suspend(struct amdgpu_device *adev)
+{
+	int src;
+	struct list_head *hnd_list_h;
+	struct list_head *hnd_list_l;
+	unsigned long irq_table_flags;
+
+	DM_IRQ_TABLE_LOCK(adev, irq_table_flags);
+
+	DRM_DEBUG_KMS("DM_IRQ: suspend\n");
+
+	/**
+	 * Disable HW interrupt  for HPD and HPDRX only since FLIP and VBLANK
+	 * will be disabled from manage_dm_interrupts on disable CRTC.
+	 */
+	for (src = DC_IRQ_SOURCE_HPD1; src <= DC_IRQ_SOURCE_HPD6RX; src++) {
+		hnd_list_l = &adev->dm.irq_handler_list_low_tab[src].head;
+		hnd_list_h = &adev->dm.irq_handler_list_high_tab[src];
+		if (!list_empty(hnd_list_l) || !list_empty(hnd_list_h))
+			dc_interrupt_set(adev->dm.dc, src, false);
+
+		DM_IRQ_TABLE_UNLOCK(adev, irq_table_flags);
+		flush_work(&adev->dm.irq_handler_list_low_tab[src].work);
+
+		DM_IRQ_TABLE_LOCK(adev, irq_table_flags);
+	}
+
+	DM_IRQ_TABLE_UNLOCK(adev, irq_table_flags);
+	return 0;
+}
+
+int amdgpu_dm_irq_resume_early(struct amdgpu_device *adev)
+{
+	int src;
+	struct list_head *hnd_list_h, *hnd_list_l;
+	unsigned long irq_table_flags;
+
+	DM_IRQ_TABLE_LOCK(adev, irq_table_flags);
+
+	DRM_DEBUG_KMS("DM_IRQ: early resume\n");
+
+	/* re-enable short pulse interrupts HW interrupt */
+	for (src = DC_IRQ_SOURCE_HPD1RX; src <= DC_IRQ_SOURCE_HPD6RX; src++) {
+		hnd_list_l = &adev->dm.irq_handler_list_low_tab[src].head;
+		hnd_list_h = &adev->dm.irq_handler_list_high_tab[src];
+		if (!list_empty(hnd_list_l) || !list_empty(hnd_list_h))
+			dc_interrupt_set(adev->dm.dc, src, true);
+	}
+
+	DM_IRQ_TABLE_UNLOCK(adev, irq_table_flags);
+
+	return 0;
+}
+
+int amdgpu_dm_irq_resume_late(struct amdgpu_device *adev)
+{
+	int src;
+	struct list_head *hnd_list_h, *hnd_list_l;
+	unsigned long irq_table_flags;
+
+	DM_IRQ_TABLE_LOCK(adev, irq_table_flags);
+
+	DRM_DEBUG_KMS("DM_IRQ: resume\n");
+
+	/**
+	 * Renable HW interrupt  for HPD and only since FLIP and VBLANK
+	 * will be enabled from manage_dm_interrupts on enable CRTC.
+	 */
+	for (src = DC_IRQ_SOURCE_HPD1; src <= DC_IRQ_SOURCE_HPD6; src++) {
+		hnd_list_l = &adev->dm.irq_handler_list_low_tab[src].head;
+		hnd_list_h = &adev->dm.irq_handler_list_high_tab[src];
+		if (!list_empty(hnd_list_l) || !list_empty(hnd_list_h))
+			dc_interrupt_set(adev->dm.dc, src, true);
+	}
+
+	DM_IRQ_TABLE_UNLOCK(adev, irq_table_flags);
+	return 0;
+}
+
+/**
+ * amdgpu_dm_irq_schedule_work - schedule all work items registered for the
+ * "irq_source".
+ */
+static void amdgpu_dm_irq_schedule_work(struct amdgpu_device *adev,
+					enum dc_irq_source irq_source)
+{
+	unsigned long irq_table_flags;
+	struct work_struct *work = NULL;
+
+	DM_IRQ_TABLE_LOCK(adev, irq_table_flags);
+
+	if (!list_empty(&adev->dm.irq_handler_list_low_tab[irq_source].head))
+		work = &adev->dm.irq_handler_list_low_tab[irq_source].work;
+
+	DM_IRQ_TABLE_UNLOCK(adev, irq_table_flags);
+
+	if (work) {
+		if (!schedule_work(work))
+			DRM_INFO("amdgpu_dm_irq_schedule_work FAILED src %d\n",
+						irq_source);
+	}
+
+}
+
+/** amdgpu_dm_irq_immediate_work
+ *  Callback high irq work immediately, don't send to work queue
+ */
+static void amdgpu_dm_irq_immediate_work(struct amdgpu_device *adev,
+					 enum dc_irq_source irq_source)
+{
+	struct amdgpu_dm_irq_handler_data *handler_data;
+	struct list_head *entry;
+	unsigned long irq_table_flags;
+
+	DM_IRQ_TABLE_LOCK(adev, irq_table_flags);
+
+	list_for_each(
+		entry,
+		&adev->dm.irq_handler_list_high_tab[irq_source]) {
+
+		handler_data =
+			list_entry(
+				entry,
+				struct amdgpu_dm_irq_handler_data,
+				hcd.list);
+
+		/* Call a subcomponent which registered for immediate
+		 * interrupt notification */
+		handler_data->hcd.handler(handler_data->hcd.handler_arg);
+	}
+
+	DM_IRQ_TABLE_UNLOCK(adev, irq_table_flags);
+}
+
+/*
+ * amdgpu_dm_irq_handler
+ *
+ * Generic IRQ handler, calls all registered high irq work immediately, and
+ * schedules work for low irq
+ */
+static int amdgpu_dm_irq_handler(struct amdgpu_device *adev,
+				 struct amdgpu_irq_src *source,
+				 struct amdgpu_iv_entry *entry)
+{
+
+	enum dc_irq_source src =
+		dc_interrupt_to_irq_source(
+			adev->dm.dc,
+			entry->src_id,
+			entry->src_data[0]);
+
+	dc_interrupt_ack(adev->dm.dc, src);
+
+	/* Call high irq work immediately */
+	amdgpu_dm_irq_immediate_work(adev, src);
+	/*Schedule low_irq work */
+	amdgpu_dm_irq_schedule_work(adev, src);
+
+	return 0;
+}
+
+static enum dc_irq_source amdgpu_dm_hpd_to_dal_irq_source(unsigned type)
+{
+	switch (type) {
+	case AMDGPU_HPD_1:
+		return DC_IRQ_SOURCE_HPD1;
+	case AMDGPU_HPD_2:
+		return DC_IRQ_SOURCE_HPD2;
+	case AMDGPU_HPD_3:
+		return DC_IRQ_SOURCE_HPD3;
+	case AMDGPU_HPD_4:
+		return DC_IRQ_SOURCE_HPD4;
+	case AMDGPU_HPD_5:
+		return DC_IRQ_SOURCE_HPD5;
+	case AMDGPU_HPD_6:
+		return DC_IRQ_SOURCE_HPD6;
+	default:
+		return DC_IRQ_SOURCE_INVALID;
+	}
+}
+
+static int amdgpu_dm_set_hpd_irq_state(struct amdgpu_device *adev,
+				       struct amdgpu_irq_src *source,
+				       unsigned type,
+				       enum amdgpu_interrupt_state state)
+{
+	enum dc_irq_source src = amdgpu_dm_hpd_to_dal_irq_source(type);
+	bool st = (state == AMDGPU_IRQ_STATE_ENABLE);
+
+	dc_interrupt_set(adev->dm.dc, src, st);
+	return 0;
+}
+
+static inline int dm_irq_state(struct amdgpu_device *adev,
+			       struct amdgpu_irq_src *source,
+			       unsigned crtc_id,
+			       enum amdgpu_interrupt_state state,
+			       const enum irq_type dal_irq_type,
+			       const char *func)
+{
+	bool st;
+	enum dc_irq_source irq_source;
+
+	struct amdgpu_crtc *acrtc = adev->mode_info.crtcs[crtc_id];
+
+	if (!acrtc) {
+		DRM_ERROR(
+			"%s: crtc is NULL at id :%d\n",
+			func,
+			crtc_id);
+		return 0;
+	}
+
+	irq_source = dal_irq_type + acrtc->otg_inst;
+
+	st = (state == AMDGPU_IRQ_STATE_ENABLE);
+
+	dc_interrupt_set(adev->dm.dc, irq_source, st);
+	return 0;
+}
+
+static int amdgpu_dm_set_pflip_irq_state(struct amdgpu_device *adev,
+					 struct amdgpu_irq_src *source,
+					 unsigned crtc_id,
+					 enum amdgpu_interrupt_state state)
+{
+	return dm_irq_state(
+		adev,
+		source,
+		crtc_id,
+		state,
+		IRQ_TYPE_PFLIP,
+		__func__);
+}
+
+static int amdgpu_dm_set_crtc_irq_state(struct amdgpu_device *adev,
+					struct amdgpu_irq_src *source,
+					unsigned crtc_id,
+					enum amdgpu_interrupt_state state)
+{
+	return dm_irq_state(
+		adev,
+		source,
+		crtc_id,
+		state,
+		IRQ_TYPE_VBLANK,
+		__func__);
+}
+
+static const struct amdgpu_irq_src_funcs dm_crtc_irq_funcs = {
+	.set = amdgpu_dm_set_crtc_irq_state,
+	.process = amdgpu_dm_irq_handler,
+};
+
+static const struct amdgpu_irq_src_funcs dm_pageflip_irq_funcs = {
+	.set = amdgpu_dm_set_pflip_irq_state,
+	.process = amdgpu_dm_irq_handler,
+};
+
+static const struct amdgpu_irq_src_funcs dm_hpd_irq_funcs = {
+	.set = amdgpu_dm_set_hpd_irq_state,
+	.process = amdgpu_dm_irq_handler,
+};
+
+void amdgpu_dm_set_irq_funcs(struct amdgpu_device *adev)
+{
+	adev->crtc_irq.num_types = AMDGPU_CRTC_IRQ_LAST;
+	adev->crtc_irq.funcs = &dm_crtc_irq_funcs;
+
+	adev->pageflip_irq.num_types = AMDGPU_PAGEFLIP_IRQ_LAST;
+	adev->pageflip_irq.funcs = &dm_pageflip_irq_funcs;
+
+	adev->hpd_irq.num_types = AMDGPU_HPD_LAST;
+	adev->hpd_irq.funcs = &dm_hpd_irq_funcs;
+}
+
+/*
+ * amdgpu_dm_hpd_init - hpd setup callback.
+ *
+ * @adev: amdgpu_device pointer
+ *
+ * Setup the hpd pins used by the card (evergreen+).
+ * Enable the pin, set the polarity, and enable the hpd interrupts.
+ */
+void amdgpu_dm_hpd_init(struct amdgpu_device *adev)
+{
+	struct drm_device *dev = adev->ddev;
+	struct drm_connector *connector;
+
+	list_for_each_entry(connector, &dev->mode_config.connector_list, head) {
+		struct amdgpu_dm_connector *amdgpu_dm_connector =
+				to_amdgpu_dm_connector(connector);
+
+		const struct dc_link *dc_link = amdgpu_dm_connector->dc_link;
+
+		if (DC_IRQ_SOURCE_INVALID != dc_link->irq_source_hpd) {
+			dc_interrupt_set(adev->dm.dc,
+					dc_link->irq_source_hpd,
+					true);
+		}
+
+		if (DC_IRQ_SOURCE_INVALID != dc_link->irq_source_hpd_rx) {
+			dc_interrupt_set(adev->dm.dc,
+					dc_link->irq_source_hpd_rx,
+					true);
+		}
+	}
+}
+
+/**
+ * amdgpu_dm_hpd_fini - hpd tear down callback.
+ *
+ * @adev: amdgpu_device pointer
+ *
+ * Tear down the hpd pins used by the card (evergreen+).
+ * Disable the hpd interrupts.
+ */
+void amdgpu_dm_hpd_fini(struct amdgpu_device *adev)
+{
+	struct drm_device *dev = adev->ddev;
+	struct drm_connector *connector;
+
+	list_for_each_entry(connector, &dev->mode_config.connector_list, head) {
+		struct amdgpu_dm_connector *amdgpu_dm_connector =
+				to_amdgpu_dm_connector(connector);
+		const struct dc_link *dc_link = amdgpu_dm_connector->dc_link;
+
+		dc_interrupt_set(adev->dm.dc, dc_link->irq_source_hpd, false);
+
+		if (DC_IRQ_SOURCE_INVALID != dc_link->irq_source_hpd_rx) {
+			dc_interrupt_set(adev->dm.dc,
+					dc_link->irq_source_hpd_rx,
+					false);
+		}
+	}
+}