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drm/amd/display: Create a file dedicated for CRTC

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[Why]
The amdgpu_dm file contains most of the code that works as an interface
between DRM API and DC. As a result, this file becomes very large since
it comprises multiple abstractions such as CRTC manipulation.

[How]
This commit extracts the CRTC code to its specific file named
amdgpu_dm_crtc. This change does not change anything inside the
functions; the only exception is converting some static functions to a
global function.

v2: fix ifdef merge mix up (Alex)

Tested-by: Daniel Wheeler <daniel.wheeler@amd.com>
Reviewed-by: Harry Wentland <Harry.Wentland@amd.com>
Acked-by: Alan Liu <HaoPing.Liu@amd.com>
Signed-off-by: Rodrigo Siqueira <Rodrigo.Siqueira@amd.com>
Signed-off-by: Alex Deucher <alexander.deucher@amd.com>
This commit is contained in:
Rodrigo Siqueira 2022-07-20 15:43:21 -04:00 • committed by Alex Deucher
parent 5d945cbcd4
commit 473683a034
4 changed files with 516 additions and 433 deletions
Show stats Download patch file Download diff file Expand all files Collapse all files

1
drivers/gpu/drm/amd/display/amdgpu_dm/Makefile
View file

@ -28,6 +28,7 @@
AMDGPUDM = \
amdgpu_dm.o \
amdgpu_dm_plane.o \
amdgpu_dm_crtc.o \
amdgpu_dm_irq.o \
amdgpu_dm_mst_types.o \
amdgpu_dm_color.o

434
drivers/gpu/drm/amd/display/amdgpu_dm/amdgpu_dm.c
View file

@ -47,6 +47,7 @@
#include "atom.h"
#include "amdgpu_dm.h"
#include "amdgpu_dm_plane.h"
#include "amdgpu_dm_crtc.h"
#ifdef CONFIG_DRM_AMD_DC_HDCP
#include "amdgpu_dm_hdcp.h"
#include <drm/display/drm_hdcp_helper.h>
@ -207,9 +208,6 @@ static int amdgpu_dm_initialize_drm_device(struct amdgpu_device *adev);
/* removes and deallocates the drm structures, created by the above function */
static void amdgpu_dm_destroy_drm_device(struct amdgpu_display_manager *dm);
static int amdgpu_dm_crtc_init(struct amdgpu_display_manager *dm,
struct drm_plane *plane,
uint32_t link_index);
static int amdgpu_dm_connector_init(struct amdgpu_display_manager *dm,
struct amdgpu_dm_connector *amdgpu_dm_connector,
uint32_t link_index,
@ -338,20 +336,6 @@ get_crtc_by_otg_inst(struct amdgpu_device *adev,
return NULL;
}
static inline bool amdgpu_dm_vrr_active_irq(struct amdgpu_crtc *acrtc)
{
return acrtc->dm_irq_params.freesync_config.state ==
VRR_STATE_ACTIVE_VARIABLE ||
acrtc->dm_irq_params.freesync_config.state ==
VRR_STATE_ACTIVE_FIXED;
}
static inline bool amdgpu_dm_vrr_active(struct dm_crtc_state *dm_state)
{
return dm_state->freesync_config.state == VRR_STATE_ACTIVE_VARIABLE ||
dm_state->freesync_config.state == VRR_STATE_ACTIVE_FIXED;
}
static inline bool is_dc_timing_adjust_needed(struct dm_crtc_state *old_state,
struct dm_crtc_state *new_state)
{
@ -467,26 +451,6 @@ static void dm_pflip_high_irq(void *interrupt_params)
vrr_active, (int) !e);
}
static void dm_crtc_handle_vblank(struct amdgpu_crtc *acrtc)
{
struct drm_crtc *crtc = &acrtc->base;
struct drm_device *dev = crtc->dev;
unsigned long flags;
drm_crtc_handle_vblank(crtc);
spin_lock_irqsave(&dev->event_lock, flags);
/* Send completion event for cursor-only commits */
if (acrtc->event && acrtc->pflip_status != AMDGPU_FLIP_SUBMITTED) {
drm_crtc_send_vblank_event(crtc, acrtc->event);
drm_crtc_vblank_put(crtc);
acrtc->event = NULL;
}
spin_unlock_irqrestore(&dev->event_lock, flags);
}
static void dm_vupdate_high_irq(void *interrupt_params)
{
struct common_irq_params *irq_params = interrupt_params;
@ -1264,52 +1228,6 @@ static void mmhub_read_system_context(struct amdgpu_device *adev, struct dc_phy_
}
static void vblank_control_worker(struct work_struct *work)
{
struct vblank_control_work *vblank_work =
container_of(work, struct vblank_control_work, work);
struct amdgpu_display_manager *dm = vblank_work->dm;
mutex_lock(&dm->dc_lock);
if (vblank_work->enable)
dm->active_vblank_irq_count++;
else if(dm->active_vblank_irq_count)
dm->active_vblank_irq_count--;
dc_allow_idle_optimizations(dm->dc, dm->active_vblank_irq_count == 0);
DRM_DEBUG_KMS("Allow idle optimizations (MALL): %d\n", dm->active_vblank_irq_count == 0);
/*
* Control PSR based on vblank requirements from OS
*
* If panel supports PSR SU, there's no need to disable PSR when OS is
* submitting fast atomic commits (we infer this by whether the OS
* requests vblank events). Fast atomic commits will simply trigger a
* full-frame-update (FFU); a specific case of selective-update (SU)
* where the SU region is the full hactive*vactive region. See
* fill_dc_dirty_rects().
*/
if (vblank_work->stream && vblank_work->stream->link) {
if (vblank_work->enable) {
if (vblank_work->stream->link->psr_settings.psr_version < DC_PSR_VERSION_SU_1 &&
vblank_work->stream->link->psr_settings.psr_allow_active)
amdgpu_dm_psr_disable(vblank_work->stream);
} else if (vblank_work->stream->link->psr_settings.psr_feature_enabled &&
!vblank_work->stream->link->psr_settings.psr_allow_active &&
vblank_work->acrtc->dm_irq_params.allow_psr_entry) {
amdgpu_dm_psr_enable(vblank_work->stream);
}
}
mutex_unlock(&dm->dc_lock);
dc_stream_release(vblank_work->stream);
kfree(vblank_work);
}
static void dm_handle_hpd_rx_offload_work(struct work_struct *work)
{
struct hpd_rx_irq_offload_work *offload_work;
@ -2385,9 +2303,6 @@ static int dm_hw_fini(void *handle)
}
static int dm_enable_vblank(struct drm_crtc *crtc);
static void dm_disable_vblank(struct drm_crtc *crtc);
static void dm_gpureset_toggle_interrupts(struct amdgpu_device *adev,
struct dc_state *state, bool enable)
{
@ -4679,13 +4594,6 @@ static int dm_early_init(void *handle)
return 0;
}
static bool modeset_required(struct drm_crtc_state *crtc_state,
struct dc_stream_state *new_stream,
struct dc_stream_state *old_stream)
{
return crtc_state->active && drm_atomic_crtc_needs_modeset(crtc_state);
}
static bool modereset_required(struct drm_crtc_state *crtc_state)
{
return !crtc_state->active && drm_atomic_crtc_needs_modeset(crtc_state);
@ -5916,182 +5824,6 @@ finish:
return stream;
}
static void amdgpu_dm_crtc_destroy(struct drm_crtc *crtc)
{
drm_crtc_cleanup(crtc);
kfree(crtc);
}
static void dm_crtc_destroy_state(struct drm_crtc *crtc,
struct drm_crtc_state *state)
{
struct dm_crtc_state *cur = to_dm_crtc_state(state);
/* TODO Destroy dc_stream objects are stream object is flattened */
if (cur->stream)
dc_stream_release(cur->stream);
__drm_atomic_helper_crtc_destroy_state(state);
kfree(state);
}
static void dm_crtc_reset_state(struct drm_crtc *crtc)
{
struct dm_crtc_state *state;
if (crtc->state)
dm_crtc_destroy_state(crtc, crtc->state);
state = kzalloc(sizeof(*state), GFP_KERNEL);
if (WARN_ON(!state))
return;
__drm_atomic_helper_crtc_reset(crtc, &state->base);
}
static struct drm_crtc_state *
dm_crtc_duplicate_state(struct drm_crtc *crtc)
{
struct dm_crtc_state *state, *cur;
cur = to_dm_crtc_state(crtc->state);
if (WARN_ON(!crtc->state))
return NULL;
state = kzalloc(sizeof(*state), GFP_KERNEL);
if (!state)
return NULL;
__drm_atomic_helper_crtc_duplicate_state(crtc, &state->base);
if (cur->stream) {
state->stream = cur->stream;
dc_stream_retain(state->stream);
}
state->active_planes = cur->active_planes;
state->vrr_infopacket = cur->vrr_infopacket;
state->abm_level = cur->abm_level;
state->vrr_supported = cur->vrr_supported;
state->freesync_config = cur->freesync_config;
state->cm_has_degamma = cur->cm_has_degamma;
state->cm_is_degamma_srgb = cur->cm_is_degamma_srgb;
state->mpo_requested = cur->mpo_requested;
/* TODO Duplicate dc_stream after objects are stream object is flattened */
return &state->base;
}
#ifdef CONFIG_DEBUG_FS
static int amdgpu_dm_crtc_late_register(struct drm_crtc *crtc)
{
crtc_debugfs_init(crtc);
return 0;
}
#endif
static inline int dm_set_vupdate_irq(struct drm_crtc *crtc, bool enable)
{
enum dc_irq_source irq_source;
struct amdgpu_crtc *acrtc = to_amdgpu_crtc(crtc);
struct amdgpu_device *adev = drm_to_adev(crtc->dev);
int rc;
irq_source = IRQ_TYPE_VUPDATE + acrtc->otg_inst;
rc = dc_interrupt_set(adev->dm.dc, irq_source, enable) ? 0 : -EBUSY;
DRM_DEBUG_VBL("crtc %d - vupdate irq %sabling: r=%d\n",
acrtc->crtc_id, enable ? "en" : "dis", rc);
return rc;
}
static inline int dm_set_vblank(struct drm_crtc *crtc, bool enable)
{
enum dc_irq_source irq_source;
struct amdgpu_crtc *acrtc = to_amdgpu_crtc(crtc);
struct amdgpu_device *adev = drm_to_adev(crtc->dev);
struct dm_crtc_state *acrtc_state = to_dm_crtc_state(crtc->state);
struct amdgpu_display_manager *dm = &adev->dm;
struct vblank_control_work *work;
int rc = 0;
if (enable) {
/* vblank irq on -> Only need vupdate irq in vrr mode */
if (amdgpu_dm_vrr_active(acrtc_state))
rc = dm_set_vupdate_irq(crtc, true);
} else {
/* vblank irq off -> vupdate irq off */
rc = dm_set_vupdate_irq(crtc, false);
}
if (rc)
return rc;
irq_source = IRQ_TYPE_VBLANK + acrtc->otg_inst;
if (!dc_interrupt_set(adev->dm.dc, irq_source, enable))
return -EBUSY;
if (amdgpu_in_reset(adev))
return 0;
if (dm->vblank_control_workqueue) {
work = kzalloc(sizeof(*work), GFP_ATOMIC);
if (!work)
return -ENOMEM;
INIT_WORK(&work->work, vblank_control_worker);
work->dm = dm;
work->acrtc = acrtc;
work->enable = enable;
if (acrtc_state->stream) {
dc_stream_retain(acrtc_state->stream);
work->stream = acrtc_state->stream;
}
queue_work(dm->vblank_control_workqueue, &work->work);
}
return 0;
}
static int dm_enable_vblank(struct drm_crtc *crtc)
{
return dm_set_vblank(crtc, true);
}
static void dm_disable_vblank(struct drm_crtc *crtc)
{
dm_set_vblank(crtc, false);
}
/* Implemented only the options currently available for the driver */
static const struct drm_crtc_funcs amdgpu_dm_crtc_funcs = {
.reset = dm_crtc_reset_state,
.destroy = amdgpu_dm_crtc_destroy,
.set_config = drm_atomic_helper_set_config,
.page_flip = drm_atomic_helper_page_flip,
.atomic_duplicate_state = dm_crtc_duplicate_state,
.atomic_destroy_state = dm_crtc_destroy_state,
.set_crc_source = amdgpu_dm_crtc_set_crc_source,
.verify_crc_source = amdgpu_dm_crtc_verify_crc_source,
.get_crc_sources = amdgpu_dm_crtc_get_crc_sources,
.get_vblank_counter = amdgpu_get_vblank_counter_kms,
.enable_vblank = dm_enable_vblank,
.disable_vblank = dm_disable_vblank,
.get_vblank_timestamp = drm_crtc_vblank_helper_get_vblank_timestamp,
#if defined(CONFIG_DEBUG_FS)
.late_register = amdgpu_dm_crtc_late_register,
#endif
};
static enum drm_connector_status
amdgpu_dm_connector_detect(struct drm_connector *connector, bool force)
{
@ -6627,113 +6359,6 @@ amdgpu_dm_connector_helper_funcs = {
.atomic_check = amdgpu_dm_connector_atomic_check,
};
static void dm_crtc_helper_disable(struct drm_crtc *crtc)
{
}
static int count_crtc_active_planes(struct drm_crtc_state *new_crtc_state)
{
struct drm_atomic_state *state = new_crtc_state->state;
struct drm_plane *plane;
int num_active = 0;
drm_for_each_plane_mask(plane, state->dev, new_crtc_state->plane_mask) {
struct drm_plane_state *new_plane_state;
/* Cursor planes are "fake". */
if (plane->type == DRM_PLANE_TYPE_CURSOR)
continue;
new_plane_state = drm_atomic_get_new_plane_state(state, plane);
if (!new_plane_state) {
/*
* The plane is enable on the CRTC and hasn't changed
* state. This means that it previously passed
* validation and is therefore enabled.
*/
num_active += 1;
continue;
}
/* We need a framebuffer to be considered enabled. */
num_active += (new_plane_state->fb != NULL);
}
return num_active;
}
static void dm_update_crtc_active_planes(struct drm_crtc *crtc,
struct drm_crtc_state *new_crtc_state)
{
struct dm_crtc_state *dm_new_crtc_state =
to_dm_crtc_state(new_crtc_state);
dm_new_crtc_state->active_planes = 0;
if (!dm_new_crtc_state->stream)
return;
dm_new_crtc_state->active_planes =
count_crtc_active_planes(new_crtc_state);
}
static int dm_crtc_helper_atomic_check(struct drm_crtc *crtc,
struct drm_atomic_state *state)
{
struct drm_crtc_state *crtc_state = drm_atomic_get_new_crtc_state(state,
crtc);
struct amdgpu_device *adev = drm_to_adev(crtc->dev);
struct dc *dc = adev->dm.dc;
struct dm_crtc_state *dm_crtc_state = to_dm_crtc_state(crtc_state);
int ret = -EINVAL;
trace_amdgpu_dm_crtc_atomic_check(crtc_state);
dm_update_crtc_active_planes(crtc, crtc_state);
if (WARN_ON(unlikely(!dm_crtc_state->stream &&
modeset_required(crtc_state, NULL, dm_crtc_state->stream)))) {
return ret;
}
/*
* We require the primary plane to be enabled whenever the CRTC is, otherwise
* drm_mode_cursor_universal may end up trying to enable the cursor plane while all other
* planes are disabled, which is not supported by the hardware. And there is legacy
* userspace which stops using the HW cursor altogether in response to the resulting EINVAL.
*/
if (crtc_state->enable &&
!(crtc_state->plane_mask & drm_plane_mask(crtc->primary))) {
DRM_DEBUG_ATOMIC("Can't enable a CRTC without enabling the primary plane\n");
return -EINVAL;
}
/* In some use cases, like reset, no stream is attached */
if (!dm_crtc_state->stream)
return 0;
if (dc_validate_stream(dc, dm_crtc_state->stream) == DC_OK)
return 0;
DRM_DEBUG_ATOMIC("Failed DC stream validation\n");
return ret;
}
static bool dm_crtc_helper_mode_fixup(struct drm_crtc *crtc,
const struct drm_display_mode *mode,
struct drm_display_mode *adjusted_mode)
{
return true;
}
static const struct drm_crtc_helper_funcs amdgpu_dm_crtc_helper_funcs = {
.disable = dm_crtc_helper_disable,
.atomic_check = dm_crtc_helper_atomic_check,
.mode_fixup = dm_crtc_helper_mode_fixup,
.get_scanout_position = amdgpu_crtc_get_scanout_position,
};
static void dm_encoder_helper_disable(struct drm_encoder *encoder)
{
@ -6891,63 +6516,6 @@ static int dm_update_mst_vcpi_slots_for_dsc(struct drm_atomic_state *state,
}
#endif
static int amdgpu_dm_crtc_init(struct amdgpu_display_manager *dm,
struct drm_plane *plane,
uint32_t crtc_index)
{
struct amdgpu_crtc *acrtc = NULL;
struct drm_plane *cursor_plane;
int res = -ENOMEM;
cursor_plane = kzalloc(sizeof(*cursor_plane), GFP_KERNEL);
if (!cursor_plane)
goto fail;
cursor_plane->type = DRM_PLANE_TYPE_CURSOR;
res = amdgpu_dm_plane_init(dm, cursor_plane, 0, NULL);
acrtc = kzalloc(sizeof(struct amdgpu_crtc), GFP_KERNEL);
if (!acrtc)
goto fail;
res = drm_crtc_init_with_planes(
dm->ddev,
&acrtc->base,
plane,
cursor_plane,
&amdgpu_dm_crtc_funcs, NULL);
if (res)
goto fail;
drm_crtc_helper_add(&acrtc->base, &amdgpu_dm_crtc_helper_funcs);
/* Create (reset) the plane state */
if (acrtc->base.funcs->reset)
acrtc->base.funcs->reset(&acrtc->base);
acrtc->max_cursor_width = dm->adev->dm.dc->caps.max_cursor_size;
acrtc->max_cursor_height = dm->adev->dm.dc->caps.max_cursor_size;
acrtc->crtc_id = crtc_index;
acrtc->base.enabled = false;
acrtc->otg_inst = -1;
dm->adev->mode_info.crtcs[crtc_index] = acrtc;
drm_crtc_enable_color_mgmt(&acrtc->base, MAX_COLOR_LUT_ENTRIES,
true, MAX_COLOR_LUT_ENTRIES);
drm_mode_crtc_set_gamma_size(&acrtc->base, MAX_COLOR_LEGACY_LUT_ENTRIES);
return 0;
fail:
kfree(acrtc);
kfree(cursor_plane);
return res;
}
static int to_drm_connector_type(enum signal_type st)
{
switch (st) {

463
drivers/gpu/drm/amd/display/amdgpu_dm/amdgpu_dm_crtc.c Normal file
View file

@ -0,0 +1,463 @@
// SPDX-License-Identifier: MIT
/*
* Copyright 2022 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/drm_vblank.h>
#include <drm/drm_atomic_helper.h>
#include "dc.h"
#include "amdgpu.h"
#include "amdgpu_dm_psr.h"
#include "amdgpu_dm_crtc.h"
#include "amdgpu_dm_plane.h"
#include "amdgpu_dm_trace.h"
#include "amdgpu_dm_debugfs.h"
void dm_crtc_handle_vblank(struct amdgpu_crtc *acrtc)
{
struct drm_crtc *crtc = &acrtc->base;
struct drm_device *dev = crtc->dev;
unsigned long flags;
drm_crtc_handle_vblank(crtc);
spin_lock_irqsave(&dev->event_lock, flags);
/* Send completion event for cursor-only commits */
if (acrtc->event && acrtc->pflip_status != AMDGPU_FLIP_SUBMITTED) {
drm_crtc_send_vblank_event(crtc, acrtc->event);
drm_crtc_vblank_put(crtc);
acrtc->event = NULL;
}
spin_unlock_irqrestore(&dev->event_lock, flags);
}
bool modeset_required(struct drm_crtc_state *crtc_state,
struct dc_stream_state *new_stream,
struct dc_stream_state *old_stream)
{
return crtc_state->active && drm_atomic_crtc_needs_modeset(crtc_state);
}
bool amdgpu_dm_vrr_active_irq(struct amdgpu_crtc *acrtc)
{
return acrtc->dm_irq_params.freesync_config.state ==
VRR_STATE_ACTIVE_VARIABLE ||
acrtc->dm_irq_params.freesync_config.state ==
VRR_STATE_ACTIVE_FIXED;
}
int dm_set_vupdate_irq(struct drm_crtc *crtc, bool enable)
{
enum dc_irq_source irq_source;
struct amdgpu_crtc *acrtc = to_amdgpu_crtc(crtc);
struct amdgpu_device *adev = drm_to_adev(crtc->dev);
int rc;
irq_source = IRQ_TYPE_VUPDATE + acrtc->otg_inst;
rc = dc_interrupt_set(adev->dm.dc, irq_source, enable) ? 0 : -EBUSY;
DRM_DEBUG_VBL("crtc %d - vupdate irq %sabling: r=%d\n",
acrtc->crtc_id, enable ? "en" : "dis", rc);
return rc;
}
bool amdgpu_dm_vrr_active(struct dm_crtc_state *dm_state)
{
return dm_state->freesync_config.state == VRR_STATE_ACTIVE_VARIABLE ||
dm_state->freesync_config.state == VRR_STATE_ACTIVE_FIXED;
}
static void vblank_control_worker(struct work_struct *work)
{
struct vblank_control_work *vblank_work =
container_of(work, struct vblank_control_work, work);
struct amdgpu_display_manager *dm = vblank_work->dm;
mutex_lock(&dm->dc_lock);
if (vblank_work->enable)
dm->active_vblank_irq_count++;
else if (dm->active_vblank_irq_count)
dm->active_vblank_irq_count--;
dc_allow_idle_optimizations(
dm->dc, dm->active_vblank_irq_count == 0 ? true : false);
DRM_DEBUG_KMS("Allow idle optimizations (MALL): %d\n", dm->active_vblank_irq_count == 0);
/*
* Control PSR based on vblank requirements from OS
*
* If panel supports PSR SU, there's no need to disable PSR when OS is
* submitting fast atomic commits (we infer this by whether the OS
* requests vblank events). Fast atomic commits will simply trigger a
* full-frame-update (FFU); a specific case of selective-update (SU)
* where the SU region is the full hactive*vactive region. See
* fill_dc_dirty_rects().
*/
if (vblank_work->stream && vblank_work->stream->link) {
if (vblank_work->enable) {
if (vblank_work->stream->link->psr_settings.psr_version < DC_PSR_VERSION_SU_1 &&
vblank_work->stream->link->psr_settings.psr_allow_active)
amdgpu_dm_psr_disable(vblank_work->stream);
} else if (vblank_work->stream->link->psr_settings.psr_feature_enabled &&
!vblank_work->stream->link->psr_settings.psr_allow_active &&
vblank_work->acrtc->dm_irq_params.allow_psr_entry) {
amdgpu_dm_psr_enable(vblank_work->stream);
}
}
mutex_unlock(&dm->dc_lock);
dc_stream_release(vblank_work->stream);
kfree(vblank_work);
}
static inline int dm_set_vblank(struct drm_crtc *crtc, bool enable)
{
enum dc_irq_source irq_source;
struct amdgpu_crtc *acrtc = to_amdgpu_crtc(crtc);
struct amdgpu_device *adev = drm_to_adev(crtc->dev);
struct dm_crtc_state *acrtc_state = to_dm_crtc_state(crtc->state);
struct amdgpu_display_manager *dm = &adev->dm;
struct vblank_control_work *work;
int rc = 0;
if (enable) {
/* vblank irq on -> Only need vupdate irq in vrr mode */
if (amdgpu_dm_vrr_active(acrtc_state))
rc = dm_set_vupdate_irq(crtc, true);
} else {
/* vblank irq off -> vupdate irq off */
rc = dm_set_vupdate_irq(crtc, false);
}
if (rc)
return rc;
irq_source = IRQ_TYPE_VBLANK + acrtc->otg_inst;
if (!dc_interrupt_set(adev->dm.dc, irq_source, enable))
return -EBUSY;
if (amdgpu_in_reset(adev))
return 0;
if (dm->vblank_control_workqueue) {
work = kzalloc(sizeof(*work), GFP_ATOMIC);
if (!work)
return -ENOMEM;
INIT_WORK(&work->work, vblank_control_worker);
work->dm = dm;
work->acrtc = acrtc;
work->enable = enable;
if (acrtc_state->stream) {
dc_stream_retain(acrtc_state->stream);
work->stream = acrtc_state->stream;
}
queue_work(dm->vblank_control_workqueue, &work->work);
}
return 0;
}
int dm_enable_vblank(struct drm_crtc *crtc)
{
return dm_set_vblank(crtc, true);
}
void dm_disable_vblank(struct drm_crtc *crtc)
{
dm_set_vblank(crtc, false);
}
static void dm_crtc_destroy_state(struct drm_crtc *crtc,
struct drm_crtc_state *state)
{
struct dm_crtc_state *cur = to_dm_crtc_state(state);
/* TODO Destroy dc_stream objects are stream object is flattened */
if (cur->stream)
dc_stream_release(cur->stream);
__drm_atomic_helper_crtc_destroy_state(state);
kfree(state);
}
static struct drm_crtc_state *dm_crtc_duplicate_state(struct drm_crtc *crtc)
{
struct dm_crtc_state *state, *cur;
cur = to_dm_crtc_state(crtc->state);
if (WARN_ON(!crtc->state))
return NULL;
state = kzalloc(sizeof(*state), GFP_KERNEL);
if (!state)
return NULL;
__drm_atomic_helper_crtc_duplicate_state(crtc, &state->base);
if (cur->stream) {
state->stream = cur->stream;
dc_stream_retain(state->stream);
}
state->active_planes = cur->active_planes;
state->vrr_infopacket = cur->vrr_infopacket;
state->abm_level = cur->abm_level;
state->vrr_supported = cur->vrr_supported;
state->freesync_config = cur->freesync_config;
state->cm_has_degamma = cur->cm_has_degamma;
state->cm_is_degamma_srgb = cur->cm_is_degamma_srgb;
state->mpo_requested = cur->mpo_requested;
/* TODO Duplicate dc_stream after objects are stream object is flattened */
return &state->base;
}
static void amdgpu_dm_crtc_destroy(struct drm_crtc *crtc)
{
drm_crtc_cleanup(crtc);
kfree(crtc);
}
static void dm_crtc_reset_state(struct drm_crtc *crtc)
{
struct dm_crtc_state *state;
if (crtc->state)
dm_crtc_destroy_state(crtc, crtc->state);
state = kzalloc(sizeof(*state), GFP_KERNEL);
if (WARN_ON(!state))
return;
__drm_atomic_helper_crtc_reset(crtc, &state->base);
}
#ifdef CONFIG_DEBUG_FS
static int amdgpu_dm_crtc_late_register(struct drm_crtc *crtc)
{
crtc_debugfs_init(crtc);
return 0;
}
#endif
/* Implemented only the options currently available for the driver */
static const struct drm_crtc_funcs amdgpu_dm_crtc_funcs = {
.reset = dm_crtc_reset_state,
.destroy = amdgpu_dm_crtc_destroy,
.set_config = drm_atomic_helper_set_config,
.page_flip = drm_atomic_helper_page_flip,
.atomic_duplicate_state = dm_crtc_duplicate_state,
.atomic_destroy_state = dm_crtc_destroy_state,
.set_crc_source = amdgpu_dm_crtc_set_crc_source,
.verify_crc_source = amdgpu_dm_crtc_verify_crc_source,
.get_crc_sources = amdgpu_dm_crtc_get_crc_sources,
.get_vblank_counter = amdgpu_get_vblank_counter_kms,
.enable_vblank = dm_enable_vblank,
.disable_vblank = dm_disable_vblank,
.get_vblank_timestamp = drm_crtc_vblank_helper_get_vblank_timestamp,
#if defined(CONFIG_DEBUG_FS)
.late_register = amdgpu_dm_crtc_late_register,
#endif
};
static void dm_crtc_helper_disable(struct drm_crtc *crtc)
{
}
static int count_crtc_active_planes(struct drm_crtc_state *new_crtc_state)
{
struct drm_atomic_state *state = new_crtc_state->state;
struct drm_plane *plane;
int num_active = 0;
drm_for_each_plane_mask(plane, state->dev, new_crtc_state->plane_mask) {
struct drm_plane_state *new_plane_state;
/* Cursor planes are "fake". */
if (plane->type == DRM_PLANE_TYPE_CURSOR)
continue;
new_plane_state = drm_atomic_get_new_plane_state(state, plane);
if (!new_plane_state) {
/*
* The plane is enable on the CRTC and hasn't changed
* state. This means that it previously passed
* validation and is therefore enabled.
*/
num_active += 1;
continue;
}
/* We need a framebuffer to be considered enabled. */
num_active += (new_plane_state->fb != NULL);
}
return num_active;
}
static void dm_update_crtc_active_planes(struct drm_crtc *crtc,
struct drm_crtc_state *new_crtc_state)
{
struct dm_crtc_state *dm_new_crtc_state =
to_dm_crtc_state(new_crtc_state);
dm_new_crtc_state->active_planes = 0;
if (!dm_new_crtc_state->stream)
return;
dm_new_crtc_state->active_planes =
count_crtc_active_planes(new_crtc_state);
}
static bool dm_crtc_helper_mode_fixup(struct drm_crtc *crtc,
const struct drm_display_mode *mode,
struct drm_display_mode *adjusted_mode)
{
return true;
}
static int dm_crtc_helper_atomic_check(struct drm_crtc *crtc,
struct drm_atomic_state *state)
{
struct drm_crtc_state *crtc_state = drm_atomic_get_new_crtc_state(state,
crtc);
struct amdgpu_device *adev = drm_to_adev(crtc->dev);
struct dc *dc = adev->dm.dc;
struct dm_crtc_state *dm_crtc_state = to_dm_crtc_state(crtc_state);
int ret = -EINVAL;
trace_amdgpu_dm_crtc_atomic_check(crtc_state);
dm_update_crtc_active_planes(crtc, crtc_state);
if (WARN_ON(unlikely(!dm_crtc_state->stream &&
modeset_required(crtc_state, NULL, dm_crtc_state->stream)))) {
return ret;
}
/*
* We require the primary plane to be enabled whenever the CRTC is, otherwise
* drm_mode_cursor_universal may end up trying to enable the cursor plane while all other
* planes are disabled, which is not supported by the hardware. And there is legacy
* userspace which stops using the HW cursor altogether in response to the resulting EINVAL.
*/
if (crtc_state->enable &&
!(crtc_state->plane_mask & drm_plane_mask(crtc->primary))) {
DRM_DEBUG_ATOMIC("Can't enable a CRTC without enabling the primary plane\n");
return -EINVAL;
}
/* In some use cases, like reset, no stream is attached */
if (!dm_crtc_state->stream)
return 0;
if (dc_validate_stream(dc, dm_crtc_state->stream) == DC_OK)
return 0;
DRM_DEBUG_ATOMIC("Failed DC stream validation\n");
return ret;
}
static const struct drm_crtc_helper_funcs amdgpu_dm_crtc_helper_funcs = {
.disable = dm_crtc_helper_disable,
.atomic_check = dm_crtc_helper_atomic_check,
.mode_fixup = dm_crtc_helper_mode_fixup,
.get_scanout_position = amdgpu_crtc_get_scanout_position,
};
int amdgpu_dm_crtc_init(struct amdgpu_display_manager *dm,
struct drm_plane *plane,
uint32_t crtc_index)
{
struct amdgpu_crtc *acrtc = NULL;
struct drm_plane *cursor_plane;
int res = -ENOMEM;
cursor_plane = kzalloc(sizeof(*cursor_plane), GFP_KERNEL);
if (!cursor_plane)
goto fail;
cursor_plane->type = DRM_PLANE_TYPE_CURSOR;
res = amdgpu_dm_plane_init(dm, cursor_plane, 0, NULL);
acrtc = kzalloc(sizeof(struct amdgpu_crtc), GFP_KERNEL);
if (!acrtc)
goto fail;
res = drm_crtc_init_with_planes(
dm->ddev,
&acrtc->base,
plane,
cursor_plane,
&amdgpu_dm_crtc_funcs, NULL);
if (res)
goto fail;
drm_crtc_helper_add(&acrtc->base, &amdgpu_dm_crtc_helper_funcs);
/* Create (reset) the plane state */
if (acrtc->base.funcs->reset)
acrtc->base.funcs->reset(&acrtc->base);
acrtc->max_cursor_width = dm->adev->dm.dc->caps.max_cursor_size;
acrtc->max_cursor_height = dm->adev->dm.dc->caps.max_cursor_size;
acrtc->crtc_id = crtc_index;
acrtc->base.enabled = false;
acrtc->otg_inst = -1;
dm->adev->mode_info.crtcs[crtc_index] = acrtc;
drm_crtc_enable_color_mgmt(&acrtc->base, MAX_COLOR_LUT_ENTRIES,
true, MAX_COLOR_LUT_ENTRIES);
drm_mode_crtc_set_gamma_size(&acrtc->base, MAX_COLOR_LEGACY_LUT_ENTRIES);
return 0;
fail:
kfree(acrtc);
kfree(cursor_plane);
return res;
}

51
drivers/gpu/drm/amd/display/amdgpu_dm/amdgpu_dm_crtc.h Normal file
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@ -0,0 +1,51 @@
/* SPDX-License-Identifier: MIT */
/*
* Copyright 2022 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
*
*/
#ifndef __AMDGPU_DM_CRTC_H__
#define __AMDGPU_DM_CRTC_H__
void dm_crtc_handle_vblank(struct amdgpu_crtc *acrtc);
bool modeset_required(struct drm_crtc_state *crtc_state,
struct dc_stream_state *new_stream,
struct dc_stream_state *old_stream);
int dm_set_vupdate_irq(struct drm_crtc *crtc, bool enable);
bool amdgpu_dm_vrr_active_irq(struct amdgpu_crtc *acrtc);
bool amdgpu_dm_vrr_active(struct dm_crtc_state *dm_state);
int dm_enable_vblank(struct drm_crtc *crtc);
void dm_disable_vblank(struct drm_crtc *crtc);
int amdgpu_dm_crtc_init(struct amdgpu_display_manager *dm,
struct drm_plane *plane,
uint32_t link_index);
#endif