[PATCH v5 1/9] drm/amd/display: switch amdgpu_dm_connector to use struct drm_edid
Melissa Wen
mwen at igalia.com
Wed Aug 7 20:25:03 UTC 2024
Replace raw edid handling (struct edid) with the opaque EDID type
(struct drm_edid) on amdgpu_dm_connector for consistency. It may also
prevent mismatch of approaches in different parts of the driver code.
Working in progress. It was only exercised with IGT tests.
v2: use const to fix warnings (Alex Hung)
v3: fix general protection fault on mst
v4: rename edid to drm_edid in amdgpu_connector (Jani)
call drm_edid_connector_update to clear edid in case of NULL (Jani)
keep setting NULL instead of free drm_edid (Jani)
check drm_edid not NULL, instead of valid (Jani)
v5: remove deprecated comments (Alex H)
use edid from dc_sink instead of call drm_edid_raw for now (Alex H)
remove unnecessary cast (Alex H)
Signed-off-by: Melissa Wen <mwen at igalia.com>
---
.../gpu/drm/amd/display/amdgpu_dm/amdgpu_dm.c | 120 ++++++++----------
.../gpu/drm/amd/display/amdgpu_dm/amdgpu_dm.h | 4 +-
.../amd/display/amdgpu_dm/amdgpu_dm_helpers.c | 13 +-
.../display/amdgpu_dm/amdgpu_dm_mst_types.c | 32 ++---
4 files changed, 80 insertions(+), 89 deletions(-)
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 ec6064d40dbf..fff1f0c524fc 100644
--- a/drivers/gpu/drm/amd/display/amdgpu_dm/amdgpu_dm.c
+++ b/drivers/gpu/drm/amd/display/amdgpu_dm/amdgpu_dm.c
@@ -3423,7 +3423,7 @@ void amdgpu_dm_update_connector_after_detect(
aconnector->dc_sink = sink;
dc_sink_retain(aconnector->dc_sink);
amdgpu_dm_update_freesync_caps(connector,
- aconnector->edid);
+ aconnector->drm_edid);
} else {
amdgpu_dm_update_freesync_caps(connector, NULL);
if (!aconnector->dc_sink) {
@@ -3482,18 +3482,18 @@ void amdgpu_dm_update_connector_after_detect(
aconnector->dc_sink = sink;
dc_sink_retain(aconnector->dc_sink);
if (sink->dc_edid.length == 0) {
- aconnector->edid = NULL;
+ aconnector->drm_edid = NULL;
if (aconnector->dc_link->aux_mode) {
drm_dp_cec_unset_edid(
&aconnector->dm_dp_aux.aux);
}
} else {
- aconnector->edid =
- (struct edid *)sink->dc_edid.raw_edid;
+ const struct edid *edid = (const struct edid *)sink->dc_edid.raw_edid;
+ aconnector->drm_edid = drm_edid_alloc(edid, sink->dc_edid.length);
+ drm_edid_connector_update(connector, aconnector->drm_edid);
if (aconnector->dc_link->aux_mode)
- drm_dp_cec_set_edid(&aconnector->dm_dp_aux.aux,
- aconnector->edid);
+ drm_dp_cec_set_edid(&aconnector->dm_dp_aux.aux, edid);
}
if (!aconnector->timing_requested) {
@@ -3504,17 +3504,18 @@ void amdgpu_dm_update_connector_after_detect(
"failed to create aconnector->requested_timing\n");
}
- drm_connector_update_edid_property(connector, aconnector->edid);
- amdgpu_dm_update_freesync_caps(connector, aconnector->edid);
+ drm_edid_connector_update(connector, aconnector->drm_edid);
+ amdgpu_dm_update_freesync_caps(connector, aconnector->drm_edid);
update_connector_ext_caps(aconnector);
} else {
drm_dp_cec_unset_edid(&aconnector->dm_dp_aux.aux);
amdgpu_dm_update_freesync_caps(connector, NULL);
- drm_connector_update_edid_property(connector, NULL);
+ drm_edid_connector_update(connector, NULL);
aconnector->num_modes = 0;
dc_sink_release(aconnector->dc_sink);
aconnector->dc_sink = NULL;
- aconnector->edid = NULL;
+ drm_edid_free(aconnector->drm_edid);
+ aconnector->drm_edid = NULL;
kfree(aconnector->timing_requested);
aconnector->timing_requested = NULL;
/* Set CP to DESIRED if it was ENABLED, so we can re-enable it again on hotplug */
@@ -7013,32 +7014,24 @@ static void amdgpu_dm_connector_funcs_force(struct drm_connector *connector)
struct amdgpu_dm_connector *aconnector = to_amdgpu_dm_connector(connector);
struct dc_link *dc_link = aconnector->dc_link;
struct dc_sink *dc_em_sink = aconnector->dc_em_sink;
- struct edid *edid;
- struct i2c_adapter *ddc;
+ const struct drm_edid *drm_edid;
- if (dc_link && dc_link->aux_mode)
- ddc = &aconnector->dm_dp_aux.aux.ddc;
- else
- ddc = &aconnector->i2c->base;
-
- /*
- * Note: drm_get_edid gets edid in the following order:
- * 1) override EDID if set via edid_override debugfs,
- * 2) firmware EDID if set via edid_firmware module parameter
- * 3) regular DDC read.
- */
- edid = drm_get_edid(connector, ddc);
- if (!edid) {
+ drm_edid = drm_edid_read(connector);
+ drm_edid_connector_update(connector, drm_edid);
+ if (!drm_edid) {
DRM_ERROR("No EDID found on connector: %s.\n", connector->name);
return;
}
- aconnector->edid = edid;
-
+ aconnector->drm_edid = drm_edid;
/* Update emulated (virtual) sink's EDID */
if (dc_em_sink && dc_link) {
+ // FIXME: Get rid of drm_edid_raw()
+ const struct edid *edid = drm_edid_raw(drm_edid);
+
memset(&dc_em_sink->edid_caps, 0, sizeof(struct dc_edid_caps));
- memmove(dc_em_sink->dc_edid.raw_edid, edid, (edid->extensions + 1) * EDID_LENGTH);
+ memmove(dc_em_sink->dc_edid.raw_edid, edid,
+ (edid->extensions + 1) * EDID_LENGTH);
dm_helpers_parse_edid_caps(
dc_link,
&dc_em_sink->dc_edid,
@@ -7068,36 +7061,26 @@ static int get_modes(struct drm_connector *connector)
static void create_eml_sink(struct amdgpu_dm_connector *aconnector)
{
struct drm_connector *connector = &aconnector->base;
- struct dc_link *dc_link = aconnector->dc_link;
struct dc_sink_init_data init_params = {
.link = aconnector->dc_link,
.sink_signal = SIGNAL_TYPE_VIRTUAL
};
- struct edid *edid;
- struct i2c_adapter *ddc;
+ const struct drm_edid *drm_edid;
+ const struct edid *edid;
- if (dc_link->aux_mode)
- ddc = &aconnector->dm_dp_aux.aux.ddc;
- else
- ddc = &aconnector->i2c->base;
-
- /*
- * Note: drm_get_edid gets edid in the following order:
- * 1) override EDID if set via edid_override debugfs,
- * 2) firmware EDID if set via edid_firmware module parameter
- * 3) regular DDC read.
- */
- edid = drm_get_edid(connector, ddc);
- if (!edid) {
+ drm_edid = drm_edid_read(connector);
+ drm_edid_connector_update(connector, drm_edid);
+ if (!drm_edid) {
DRM_ERROR("No EDID found on connector: %s.\n", connector->name);
return;
}
- if (drm_detect_hdmi_monitor(edid))
+ if (connector->display_info.is_hdmi)
init_params.sink_signal = SIGNAL_TYPE_HDMI_TYPE_A;
- aconnector->edid = edid;
+ aconnector->drm_edid = drm_edid;
+ edid = drm_edid_raw(drm_edid); // FIXME: Get rid of drm_edid_raw()
aconnector->dc_em_sink = dc_link_add_remote_sink(
aconnector->dc_link,
(uint8_t *)edid,
@@ -7784,16 +7767,16 @@ static void amdgpu_set_panel_orientation(struct drm_connector *connector)
}
static void amdgpu_dm_connector_ddc_get_modes(struct drm_connector *connector,
- struct edid *edid)
+ const struct drm_edid *drm_edid)
{
struct amdgpu_dm_connector *amdgpu_dm_connector =
to_amdgpu_dm_connector(connector);
- if (edid) {
+ if (drm_edid) {
/* empty probed_modes */
INIT_LIST_HEAD(&connector->probed_modes);
amdgpu_dm_connector->num_modes =
- drm_add_edid_modes(connector, edid);
+ drm_edid_connector_add_modes(connector);
/* sorting the probed modes before calling function
* amdgpu_dm_get_native_mode() since EDID can have
@@ -7807,10 +7790,10 @@ static void amdgpu_dm_connector_ddc_get_modes(struct drm_connector *connector,
amdgpu_dm_get_native_mode(connector);
/* Freesync capabilities are reset by calling
- * drm_add_edid_modes() and need to be
+ * drm_edid_connector_add_modes() and need to be
* restored here.
*/
- amdgpu_dm_update_freesync_caps(connector, edid);
+ amdgpu_dm_update_freesync_caps(connector, drm_edid);
} else {
amdgpu_dm_connector->num_modes = 0;
}
@@ -7906,12 +7889,12 @@ static uint add_fs_modes(struct amdgpu_dm_connector *aconnector)
}
static void amdgpu_dm_connector_add_freesync_modes(struct drm_connector *connector,
- struct edid *edid)
+ const struct drm_edid *drm_edid)
{
struct amdgpu_dm_connector *amdgpu_dm_connector =
to_amdgpu_dm_connector(connector);
- if (!(amdgpu_freesync_vid_mode && edid))
+ if (!(amdgpu_freesync_vid_mode && drm_edid))
return;
if (amdgpu_dm_connector->max_vfreq - amdgpu_dm_connector->min_vfreq > 10)
@@ -7924,24 +7907,24 @@ static int amdgpu_dm_connector_get_modes(struct drm_connector *connector)
struct amdgpu_dm_connector *amdgpu_dm_connector =
to_amdgpu_dm_connector(connector);
struct drm_encoder *encoder;
- struct edid *edid = amdgpu_dm_connector->edid;
+ const struct drm_edid *drm_edid = amdgpu_dm_connector->drm_edid;
struct dc_link_settings *verified_link_cap =
&amdgpu_dm_connector->dc_link->verified_link_cap;
const struct dc *dc = amdgpu_dm_connector->dc_link->dc;
encoder = amdgpu_dm_connector_to_encoder(connector);
- if (!drm_edid_is_valid(edid)) {
+ if (!drm_edid) {
amdgpu_dm_connector->num_modes =
drm_add_modes_noedid(connector, 640, 480);
if (dc->link_srv->dp_get_encoding_format(verified_link_cap) == DP_128b_132b_ENCODING)
amdgpu_dm_connector->num_modes +=
drm_add_modes_noedid(connector, 1920, 1080);
} else {
- amdgpu_dm_connector_ddc_get_modes(connector, edid);
+ amdgpu_dm_connector_ddc_get_modes(connector, drm_edid);
if (encoder)
amdgpu_dm_connector_add_common_modes(encoder, connector);
- amdgpu_dm_connector_add_freesync_modes(connector, edid);
+ amdgpu_dm_connector_add_freesync_modes(connector, drm_edid);
}
amdgpu_dm_fbc_init(connector);
@@ -11830,7 +11813,7 @@ static bool parse_edid_cea(struct amdgpu_dm_connector *aconnector,
}
static void parse_edid_displayid_vrr(struct drm_connector *connector,
- struct edid *edid)
+ const struct edid *edid)
{
u8 *edid_ext = NULL;
int i;
@@ -11873,7 +11856,7 @@ static void parse_edid_displayid_vrr(struct drm_connector *connector,
}
static int parse_amd_vsdb(struct amdgpu_dm_connector *aconnector,
- struct edid *edid, struct amdgpu_hdmi_vsdb_info *vsdb_info)
+ const struct edid *edid, struct amdgpu_hdmi_vsdb_info *vsdb_info)
{
u8 *edid_ext = NULL;
int i;
@@ -11908,7 +11891,8 @@ static int parse_amd_vsdb(struct amdgpu_dm_connector *aconnector,
}
static int parse_hdmi_amd_vsdb(struct amdgpu_dm_connector *aconnector,
- struct edid *edid, struct amdgpu_hdmi_vsdb_info *vsdb_info)
+ const struct edid *edid,
+ struct amdgpu_hdmi_vsdb_info *vsdb_info)
{
u8 *edid_ext = NULL;
int i;
@@ -11950,19 +11934,19 @@ static int parse_hdmi_amd_vsdb(struct amdgpu_dm_connector *aconnector,
* FreeSync parameters.
*/
void amdgpu_dm_update_freesync_caps(struct drm_connector *connector,
- struct edid *edid)
+ const struct drm_edid *drm_edid)
{
int i = 0;
- struct detailed_timing *timing;
- struct detailed_non_pixel *data;
- struct detailed_data_monitor_range *range;
+ const struct detailed_timing *timing;
+ const struct detailed_non_pixel *data;
+ const struct detailed_data_monitor_range *range;
struct amdgpu_dm_connector *amdgpu_dm_connector =
to_amdgpu_dm_connector(connector);
struct dm_connector_state *dm_con_state = NULL;
struct dc_sink *sink;
-
struct amdgpu_device *adev = drm_to_adev(connector->dev);
struct amdgpu_hdmi_vsdb_info vsdb_info = {0};
+ const struct edid *edid;
bool freesync_capable = false;
enum adaptive_sync_type as_type = ADAPTIVE_SYNC_TYPE_NONE;
@@ -11975,7 +11959,7 @@ void amdgpu_dm_update_freesync_caps(struct drm_connector *connector,
amdgpu_dm_connector->dc_sink :
amdgpu_dm_connector->dc_em_sink;
- if (!edid || !sink) {
+ if (!drm_edid || !sink) {
dm_con_state = to_dm_connector_state(connector->state);
amdgpu_dm_connector->min_vfreq = 0;
@@ -11992,6 +11976,8 @@ void amdgpu_dm_update_freesync_caps(struct drm_connector *connector,
if (!adev->dm.freesync_module)
goto update;
+ edid = drm_edid_raw(drm_edid); // FIXME: Get rid of drm_edid_raw()
+
/* Some eDP panels only have the refresh rate range info in DisplayID */
if ((connector->display_info.monitor_range.min_vfreq == 0 ||
connector->display_info.monitor_range.max_vfreq == 0))
@@ -12068,7 +12054,7 @@ void amdgpu_dm_update_freesync_caps(struct drm_connector *connector,
amdgpu_dm_connector->as_type = ADAPTIVE_SYNC_TYPE_EDP;
}
- } else if (edid && sink->sink_signal == SIGNAL_TYPE_HDMI_TYPE_A) {
+ } else if (drm_edid && sink->sink_signal == SIGNAL_TYPE_HDMI_TYPE_A) {
i = parse_hdmi_amd_vsdb(amdgpu_dm_connector, edid, &vsdb_info);
if (i >= 0 && vsdb_info.freesync_supported) {
timing = &edid->detailed_timings[i];
diff --git a/drivers/gpu/drm/amd/display/amdgpu_dm/amdgpu_dm.h b/drivers/gpu/drm/amd/display/amdgpu_dm/amdgpu_dm.h
index 2d7755e2b6c3..c231d3058db8 100644
--- a/drivers/gpu/drm/amd/display/amdgpu_dm/amdgpu_dm.h
+++ b/drivers/gpu/drm/amd/display/amdgpu_dm/amdgpu_dm.h
@@ -673,7 +673,7 @@ struct amdgpu_dm_connector {
/* we need to mind the EDID between detect
and get modes due to analog/digital/tvencoder */
- struct edid *edid;
+ const struct drm_edid *drm_edid;
/* shared with amdgpu */
struct amdgpu_hpd hpd;
@@ -951,7 +951,7 @@ void dm_restore_drm_connector_state(struct drm_device *dev,
struct drm_connector *connector);
void amdgpu_dm_update_freesync_caps(struct drm_connector *connector,
- struct edid *edid);
+ const struct drm_edid *drm_edid);
void amdgpu_dm_trigger_timing_sync(struct drm_device *dev);
diff --git a/drivers/gpu/drm/amd/display/amdgpu_dm/amdgpu_dm_helpers.c b/drivers/gpu/drm/amd/display/amdgpu_dm/amdgpu_dm_helpers.c
index 165e010fe69c..2e07ce2e89f4 100644
--- a/drivers/gpu/drm/amd/display/amdgpu_dm/amdgpu_dm_helpers.c
+++ b/drivers/gpu/drm/amd/display/amdgpu_dm/amdgpu_dm_helpers.c
@@ -897,7 +897,8 @@ enum dc_edid_status dm_helpers_read_local_edid(
struct i2c_adapter *ddc;
int retry = 3;
enum dc_edid_status edid_status;
- struct edid *edid;
+ const struct drm_edid *drm_edid;
+ const struct edid *edid;
if (link->aux_mode)
ddc = &aconnector->dm_dp_aux.aux.ddc;
@@ -909,25 +910,27 @@ enum dc_edid_status dm_helpers_read_local_edid(
*/
do {
- edid = drm_get_edid(&aconnector->base, ddc);
+ drm_edid = drm_edid_read_ddc(connector, ddc);
+ drm_edid_connector_update(connector, drm_edid);
/* DP Compliance Test 4.2.2.6 */
if (link->aux_mode && connector->edid_corrupt)
drm_dp_send_real_edid_checksum(&aconnector->dm_dp_aux.aux, connector->real_edid_checksum);
- if (!edid && connector->edid_corrupt) {
+ if (!drm_edid && connector->edid_corrupt) {
connector->edid_corrupt = false;
return EDID_BAD_CHECKSUM;
}
- if (!edid)
+ if (!drm_edid)
return EDID_NO_RESPONSE;
+ edid = drm_edid_raw(drm_edid); // FIXME: Get rid of drm_edid_raw()
sink->dc_edid.length = EDID_LENGTH * (edid->extensions + 1);
memmove(sink->dc_edid.raw_edid, (uint8_t *)edid, sink->dc_edid.length);
/* We don't need the original edid anymore */
- kfree(edid);
+ drm_edid_free(drm_edid);
edid_status = dm_helpers_parse_edid_caps(
link,
diff --git a/drivers/gpu/drm/amd/display/amdgpu_dm/amdgpu_dm_mst_types.c b/drivers/gpu/drm/amd/display/amdgpu_dm/amdgpu_dm_mst_types.c
index 915eb2c08ece..76e74f6acf1e 100644
--- a/drivers/gpu/drm/amd/display/amdgpu_dm/amdgpu_dm_mst_types.c
+++ b/drivers/gpu/drm/amd/display/amdgpu_dm/amdgpu_dm_mst_types.c
@@ -129,7 +129,7 @@ dm_dp_mst_connector_destroy(struct drm_connector *connector)
dc_sink_release(aconnector->dc_sink);
}
- kfree(aconnector->edid);
+ drm_edid_free(aconnector->drm_edid);
drm_connector_cleanup(connector);
drm_dp_mst_put_port_malloc(aconnector->mst_output_port);
@@ -182,7 +182,7 @@ amdgpu_dm_mst_connector_early_unregister(struct drm_connector *connector)
dc_sink_release(dc_sink);
aconnector->dc_sink = NULL;
- aconnector->edid = NULL;
+ aconnector->drm_edid = NULL;
aconnector->dsc_aux = NULL;
port->passthrough_aux = NULL;
}
@@ -302,16 +302,16 @@ static int dm_dp_mst_get_modes(struct drm_connector *connector)
if (!aconnector)
return drm_add_edid_modes(connector, NULL);
- if (!aconnector->edid) {
- struct edid *edid;
+ if (!aconnector->drm_edid) {
+ const struct drm_edid *drm_edid;
- edid = drm_dp_mst_get_edid(connector, &aconnector->mst_root->mst_mgr, aconnector->mst_output_port);
+ drm_edid = drm_dp_mst_edid_read(connector, &aconnector->mst_root->mst_mgr, aconnector->mst_output_port);
- if (!edid) {
+ if (!drm_edid) {
amdgpu_dm_set_mst_status(&aconnector->mst_status,
MST_REMOTE_EDID, false);
- drm_connector_update_edid_property(
+ drm_edid_connector_update(
&aconnector->base,
NULL);
@@ -345,7 +345,7 @@ static int dm_dp_mst_get_modes(struct drm_connector *connector)
return ret;
}
- aconnector->edid = edid;
+ aconnector->drm_edid = drm_edid;
amdgpu_dm_set_mst_status(&aconnector->mst_status,
MST_REMOTE_EDID, true);
}
@@ -360,10 +360,13 @@ static int dm_dp_mst_get_modes(struct drm_connector *connector)
struct dc_sink_init_data init_params = {
.link = aconnector->dc_link,
.sink_signal = SIGNAL_TYPE_DISPLAY_PORT_MST };
+ const struct edid *edid;
+
+ edid = drm_edid_raw(aconnector->drm_edid); // FIXME: Get rid of drm_edid_raw()
dc_sink = dc_link_add_remote_sink(
aconnector->dc_link,
- (uint8_t *)aconnector->edid,
- (aconnector->edid->extensions + 1) * EDID_LENGTH,
+ (uint8_t *)edid,
+ (edid->extensions + 1) * EDID_LENGTH,
&init_params);
if (!dc_sink) {
@@ -405,7 +408,7 @@ static int dm_dp_mst_get_modes(struct drm_connector *connector)
if (aconnector->dc_sink) {
amdgpu_dm_update_freesync_caps(
- connector, aconnector->edid);
+ connector, aconnector->drm_edid);
#if defined(CONFIG_DRM_AMD_DC_FP)
if (!validate_dsc_caps_on_connector(aconnector))
@@ -419,10 +422,9 @@ static int dm_dp_mst_get_modes(struct drm_connector *connector)
}
}
- drm_connector_update_edid_property(
- &aconnector->base, aconnector->edid);
+ drm_edid_connector_update(&aconnector->base, aconnector->drm_edid);
- ret = drm_add_edid_modes(connector, aconnector->edid);
+ ret = drm_edid_connector_add_modes(connector);
return ret;
}
@@ -500,7 +502,7 @@ dm_dp_mst_detect(struct drm_connector *connector,
dc_sink_release(aconnector->dc_sink);
aconnector->dc_sink = NULL;
- aconnector->edid = NULL;
+ aconnector->drm_edid = NULL;
aconnector->dsc_aux = NULL;
port->passthrough_aux = NULL;
--
2.43.0
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