CRTC properties have been added for enable/disable histogram, reading
the histogram data and writing the IET data.
"HISTOGRAM_EN" is the crtc property to enable/disable the global
histogram and takes a value 0/1 accordingly.
"Histogram" is a crtc property to read the binary histogram data.
"Global IET" is a crtc property to write the IET binary LUT data.
v2: Read the histogram blob data before sending uevent (Jani)
v3: use drm_property_replace_blob_from_id (Vandita)
Add substruct for histogram in intel_crtc_state (Jani)
v4: Rebased after addressing comments on patch 1
Signed-off-by: Arun R Murthy <arun.r.mur...@intel.com>
---
drivers/gpu/drm/i915/display/intel_atomic.c | 5 +
drivers/gpu/drm/i915/display/intel_crtc.c | 169 +++++++++++++++++-
drivers/gpu/drm/i915/display/intel_crtc.h | 5 +
drivers/gpu/drm/i915/display/intel_display.c | 13 ++
.../drm/i915/display/intel_display_types.h | 13 ++
.../gpu/drm/i915/display/intel_histogram.c | 6 +
6 files changed, 210 insertions(+), 1 deletion(-)
diff --git a/drivers/gpu/drm/i915/display/intel_atomic.c
b/drivers/gpu/drm/i915/display/intel_atomic.c
index 6cac26af128c..b2089605e125 100644
--- a/drivers/gpu/drm/i915/display/intel_atomic.c
+++ b/drivers/gpu/drm/i915/display/intel_atomic.c
@@ -246,6 +246,8 @@ intel_crtc_duplicate_state(struct drm_crtc *crtc)
__drm_atomic_helper_crtc_duplicate_state(crtc, &crtc_state->uapi);
+ if (crtc_state->histogram.global_iet)
+ drm_property_blob_get(crtc_state->histogram.global_iet);
/* copy color blobs */
if (crtc_state->hw.degamma_lut)
drm_property_blob_get(crtc_state->hw.degamma_lut);
@@ -277,6 +279,7 @@ intel_crtc_duplicate_state(struct drm_crtc *crtc)
crtc_state->update_planes = 0;
crtc_state->dsb_color_vblank = NULL;
crtc_state->dsb_color_commit = NULL;
+ crtc_state->histogram.histogram_enable_changed = false;
return &crtc_state->uapi;
}
@@ -313,6 +316,8 @@ intel_crtc_destroy_state(struct drm_crtc *crtc,
drm_WARN_ON(crtc->dev, crtc_state->dsb_color_vblank);
drm_WARN_ON(crtc->dev, crtc_state->dsb_color_commit);
+ if (crtc_state->histogram.global_iet)
+ drm_property_blob_put(crtc_state->histogram.global_iet);
__drm_atomic_helper_crtc_destroy_state(&crtc_state->uapi);
intel_crtc_free_hw_state(crtc_state);
if (crtc_state->dp_tunnel_ref.tunnel)
diff --git a/drivers/gpu/drm/i915/display/intel_crtc.c
b/drivers/gpu/drm/i915/display/intel_crtc.c
index 3a28d8450a38..e3df5e2e6c8b 100644
--- a/drivers/gpu/drm/i915/display/intel_crtc.c
+++ b/drivers/gpu/drm/i915/display/intel_crtc.c
@@ -11,6 +11,7 @@
#include <drm/drm_plane.h>
#include <drm/drm_vblank.h>
#include <drm/drm_vblank_work.h>
+#include <drm/drm_atomic_uapi.h>
#include "i915_vgpu.h"
#include "i9xx_plane.h"
@@ -27,6 +28,7 @@
#include "intel_drrs.h"
#include "intel_dsi.h"
#include "intel_fifo_underrun.h"
+#include "intel_histogram.h"
#include "intel_pipe_crc.h"
#include "intel_psr.h"
#include "intel_sprite.h"
@@ -210,6 +212,7 @@ static struct intel_crtc *intel_crtc_alloc(void)
static void intel_crtc_free(struct intel_crtc *crtc)
{
intel_crtc_destroy_state(&crtc->base, crtc->base.state);
+ intel_histogram_finish(crtc);
kfree(crtc);
}
@@ -229,6 +232,67 @@ static int intel_crtc_late_register(struct drm_crtc *crtc)
return 0;
}
+static int intel_crtc_get_property(struct drm_crtc *crtc,
+ const struct drm_crtc_state *state,
+ struct drm_property *property,
+ uint64_t *val)
+{
+ struct drm_i915_private *i915 = to_i915(crtc->dev);
+ const struct intel_crtc_state *intel_crtc_state =
+ to_intel_crtc_state(state);
+ struct intel_crtc *intel_crtc = to_intel_crtc(crtc);
+
+ if (property == intel_crtc->histogram_en_property) {
+ *val = intel_crtc_state->histogram.histogram_enable;
+ } else if (property == intel_crtc->global_iet_property) {
+ *val = (intel_crtc_state->histogram.global_iet) ?
+ intel_crtc_state->histogram.global_iet->base.id : 0;
+ } else if (property == intel_crtc->histogram_property) {
+ *val = (intel_crtc_state->histogram.histogram) ?
+ intel_crtc_state->histogram.histogram->base.id : 0;
+ } else {
+ drm_err(&i915->drm,
+ "Unknown property [PROP:%d:%s]\n",
+ property->base.id, property->name);
+ return -EINVAL;
+ }
+
+ return 0;
+}
+
+static int intel_crtc_set_property(struct drm_crtc *crtc,
+ struct drm_crtc_state *state,
+ struct drm_property *property,
+ u64 val)
+{
+ struct drm_i915_private *i915 = to_i915(crtc->dev);
+ struct intel_crtc_state *intel_crtc_state =
+ to_intel_crtc_state(state);
+ struct intel_crtc *intel_crtc = to_intel_crtc(crtc);
+ bool replaced = false;
+
+ if (property == intel_crtc->histogram_en_property) {
+ intel_crtc_state->histogram.histogram_enable = val;
+ intel_crtc_state->histogram.histogram_enable_changed = true;
+ return 0;
+ }
+
+ if (property == intel_crtc->global_iet_property) {
+ drm_property_replace_blob_from_id(crtc->dev,
+
&intel_crtc_state->histogram.global_iet,
+ val,
+ sizeof(uint32_t) *
HISTOGRAM_IET_LENGTH,
+ -1, &replaced);
+ if (replaced)
+ intel_crtc_state->histogram.global_iet_changed = true;
+ return 0;
+ }
+
+ drm_dbg_atomic(&i915->drm, "Unknown property [PROP:%d:%s]\n",
+ property->base.id, property->name);
+ return -EINVAL;
+}
+
#define INTEL_CRTC_FUNCS \
.set_config = drm_atomic_helper_set_config, \
.destroy = intel_crtc_destroy, \
@@ -238,7 +302,9 @@ static int intel_crtc_late_register(struct drm_crtc *crtc)
.set_crc_source = intel_crtc_set_crc_source, \
.verify_crc_source = intel_crtc_verify_crc_source, \
.get_crc_sources = intel_crtc_get_crc_sources, \
- .late_register = intel_crtc_late_register
+ .late_register = intel_crtc_late_register, \
+ .atomic_set_property = intel_crtc_set_property, \
+ .atomic_get_property = intel_crtc_get_property
static const struct drm_crtc_funcs bdw_crtc_funcs = {
INTEL_CRTC_FUNCS,
@@ -383,6 +449,10 @@ int intel_crtc_init(struct drm_i915_private *dev_priv,
enum pipe pipe)
intel_color_crtc_init(crtc);
intel_drrs_crtc_init(crtc);
intel_crtc_crc_init(crtc);
+ intel_histogram_init(crtc);
+
+ /* Initialize crtc properties */
+ intel_crtc_add_property(crtc);
cpu_latency_qos_add_request(&crtc->vblank_pm_qos, PM_QOS_DEFAULT_VALUE);
@@ -716,3 +786,100 @@ void intel_pipe_update_end(struct intel_atomic_state
*state,
out:
intel_psr_unlock(new_crtc_state);
}
+
+static const struct drm_prop_enum_list histogram_enable_names[] = {
+ { INTEL_HISTOGRAM_DISABLE, "Disable" },
+ { INTEL_HISTOGRAM_ENABLE, "Enable" },
+};
+
+/**
+ * intel_attach_histogram_en_property() - add property to enable/disable
histogram
+ * @intel_crtc: pointer to the struct intel_crtc on which the global histogram
is to
+ * be enabled/disabled
+ *
+ * "HISTOGRAM_EN" is the crtc propety to enable/disable global histogram
+ */
+void intel_attach_histogram_en_property(struct intel_crtc *intel_crtc)
+{
+ struct drm_crtc *crtc = &intel_crtc->base;
+ struct drm_device *dev = crtc->dev;
+ struct drm_property *prop;
+
+ prop = intel_crtc->histogram_en_property;
+ if (!prop) {
+ prop = drm_property_create_enum(dev, 0,
+ "Histogram_Enable",
+ histogram_enable_names,
+
ARRAY_SIZE(histogram_enable_names));
+ if (!prop)
+ return;
+
+ intel_crtc->histogram_en_property = prop;
+ }
+
+ drm_object_attach_property(&crtc->base, prop, 0);
+}
+
+/**
+ * intel_attach_global_iet_property() - add property to write Image
Enhancement data
+ * @intel_crtc: pointer to the struct intel_crtc on which global histogram is
enabled
+ *
+ * "Global IET" is the crtc property to write the Image Enhancement LUT binary
data
+ */
+void intel_attach_global_iet_property(struct intel_crtc *intel_crtc)
+{
+ struct drm_crtc *crtc = &intel_crtc->base;
+ struct drm_device *dev = crtc->dev;
+ struct drm_property *prop;
+
+ prop = intel_crtc->global_iet_property;
+ if (!prop) {
+ prop = drm_property_create(dev, DRM_MODE_PROP_BLOB |
DRM_MODE_PROP_ATOMIC,
+ "Global IET", 0);
+ if (!prop)
+ return;
+
+ intel_crtc->global_iet_property = prop;
+ }
+
+ drm_object_attach_property(&crtc->base, prop, 0);
+}
+
+/**
+ * intel_attach_histogram_property() - crtc property to read the histogram.
+ * @intel_crtc: pointer to the struct intel_crtc on which the global histogram
+ * was enabled.
+ * "Global Histogram" is the crtc property to read the binary histogram data.
+ */
+void intel_attach_histogram_property(struct intel_crtc *intel_crtc)
+{
+ struct drm_crtc *crtc = &intel_crtc->base;
+ struct drm_device *dev = crtc->dev;
+ struct drm_property *prop;
+ struct drm_property_blob *blob;
+
+ prop = intel_crtc->histogram_property;
+ if (!prop) {
+ prop = drm_property_create(dev, DRM_MODE_PROP_BLOB |
+ DRM_MODE_PROP_ATOMIC |
+ DRM_MODE_PROP_IMMUTABLE,
+ "Global Histogram", 0);
+ if (!prop)
+ return;
+
+ intel_crtc->histogram_property = prop;
+ }
+ blob = drm_property_create_blob(dev, sizeof(uint32_t) *
HISTOGRAM_BIN_COUNT, NULL);
+ intel_crtc->config->histogram.histogram = blob;
+
+ drm_object_attach_property(&crtc->base, prop, blob->base.id);
+}
+
+int intel_crtc_add_property(struct intel_crtc *intel_crtc)
+{
+ intel_attach_histogram_en_property(intel_crtc);
+ intel_attach_histogram_property(intel_crtc);
+ intel_attach_global_iet_property(intel_crtc);
+
+ return 0;
+}
diff --git a/drivers/gpu/drm/i915/display/intel_crtc.h
b/drivers/gpu/drm/i915/display/intel_crtc.h
index a58ecd11bba2..b203f8eb862a 100644
--- a/drivers/gpu/drm/i915/display/intel_crtc.h
+++ b/drivers/gpu/drm/i915/display/intel_crtc.h
@@ -7,6 +7,7 @@
#define _INTEL_CRTC_H_
#include <linux/types.h>
+#include <drm/drm_crtc.h>
enum i9xx_plane_id;
enum pipe;
@@ -54,4 +55,8 @@ void intel_wait_for_vblank_if_active(struct drm_i915_private
*i915,
enum pipe pipe);
void intel_crtc_wait_for_next_vblank(struct intel_crtc *crtc);
+int intel_crtc_add_property(struct intel_crtc *intel_crtc);
+void intel_attach_histogram_en_property(struct intel_crtc *intel_crtc);
+void intel_attach_global_iet_property(struct intel_crtc *intel_crtc);
+void intel_attach_histogram_property(struct intel_crtc *intel_crtc);
#endif
diff --git a/drivers/gpu/drm/i915/display/intel_display.c
b/drivers/gpu/drm/i915/display/intel_display.c
index f7667931f9d9..ce51a151b9ae 100644
--- a/drivers/gpu/drm/i915/display/intel_display.c
+++ b/drivers/gpu/drm/i915/display/intel_display.c
@@ -93,6 +93,7 @@
#include "intel_fifo_underrun.h"
#include "intel_frontbuffer.h"
#include "intel_hdmi.h"
+#include "intel_histogram.h"
#include "intel_hotplug.h"
#include "intel_link_bw.h"
#include "intel_lvds.h"
@@ -4373,6 +4374,10 @@ static int intel_crtc_atomic_check(struct
intel_atomic_state *state,
if (ret)
return ret;
+ /* HISTOGRAM changed */
+ if (crtc_state->histogram.histogram_enable_changed)
+ return intel_histogram_atomic_check(crtc);
+
return 0;
}
@@ -7546,6 +7551,14 @@ static void intel_atomic_commit_tail(struct
intel_atomic_state *state)
*/
old_crtc_state->dsb_color_vblank =
fetch_and_zero(&new_crtc_state->dsb_color_vblank);
old_crtc_state->dsb_color_commit =
fetch_and_zero(&new_crtc_state->dsb_color_commit);
+
+ /* Re-Visit: HISTOGRAM related stuff */
+ if (new_crtc_state->histogram.histogram_enable_changed)
+ intel_histogram_update(crtc,
+
new_crtc_state->histogram.histogram_enable);
+ if (new_crtc_state->histogram.global_iet_changed)
+ intel_histogram_set_iet_lut(crtc,
+ (u32
*)new_crtc_state->histogram.global_iet->data);
}
/* Underruns don't always raise interrupts, so check manually */
diff --git a/drivers/gpu/drm/i915/display/intel_display_types.h
b/drivers/gpu/drm/i915/display/intel_display_types.h
index c5504f4c3178..317b3e469dbb 100644
--- a/drivers/gpu/drm/i915/display/intel_display_types.h
+++ b/drivers/gpu/drm/i915/display/intel_display_types.h
@@ -1301,6 +1301,15 @@ struct intel_crtc_state {
/* LOBF flag */
bool has_lobf;
+
+ /* Histogram data */
+ struct {
+ int histogram_enable;
+ struct drm_property_blob *global_iet;
+ struct drm_property_blob *histogram;
+ bool global_iet_changed;
+ bool histogram_enable_changed;
+ } histogram;
};
enum intel_pipe_crc_source {
@@ -1408,6 +1417,10 @@ struct intel_crtc {
struct pm_qos_request vblank_pm_qos;
struct intel_histogram *histogram;
+ /* HISTOGRAM properties */
+ struct drm_property *histogram_en_property;
+ struct drm_property *global_iet_property;
+ struct drm_property *histogram_property;
#ifdef CONFIG_DEBUG_FS
struct intel_pipe_crc pipe_crc;
diff --git a/drivers/gpu/drm/i915/display/intel_histogram.c
b/drivers/gpu/drm/i915/display/intel_histogram.c
index ce2a5eae2784..72e9cb5156a0 100644
--- a/drivers/gpu/drm/i915/display/intel_histogram.c
+++ b/drivers/gpu/drm/i915/display/intel_histogram.c
@@ -82,6 +82,11 @@ static void intel_histogram_handle_int_work(struct
work_struct *work)
intel_de_rmw(display, DPST_CTL(intel_crtc->pipe),
DPST_CTL_BIN_REG_FUNC_SEL | DPST_CTL_BIN_REG_MASK, 0);
if (intel_histogram_get_data(intel_crtc)) {
+ drm_property_replace_global_blob(display->drm,
+ &intel_crtc->config->histogram.histogram,
+ sizeof(histogram->bin_data),
+ histogram->bin_data, &intel_crtc->base.base,
+ intel_crtc->histogram_property);
/* Notify user for Histogram rediness */
if (kobject_uevent_env(&display->drm->primary->kdev->kobj,
KOBJ_CHANGE, histogram_event))
@@ -195,6 +200,7 @@ static void intel_histogram_disable(struct intel_crtc
*intel_crtc)
cancel_delayed_work(&histogram->work);
histogram->enable = false;
+ intel_crtc->config->histogram.histogram_enable = false;
}
int intel_histogram_update(struct intel_crtc *intel_crtc, bool enable)
--
2.25.1
