Adding support for writeback transcoder to start capturing frames using
interrupt mechanism
Signed-off-by: Suraj Kandpal <suraj.kand...@intel.com>
---
drivers/gpu/drm/i915/Makefile | 1 +
drivers/gpu/drm/i915/display/intel_acpi.c | 1 +
drivers/gpu/drm/i915/display/intel_display.c | 89 +-
drivers/gpu/drm/i915/display/intel_display.h | 9 +
.../drm/i915/display/intel_display_types.h | 13 +
drivers/gpu/drm/i915/display/intel_dpll.c | 3 +
drivers/gpu/drm/i915/display/intel_opregion.c | 3 +
drivers/gpu/drm/i915/display/intel_wd.c | 978 ++++++++++++++++++
drivers/gpu/drm/i915/display/intel_wd.h | 82 ++
drivers/gpu/drm/i915/i915_drv.h | 2 +
drivers/gpu/drm/i915/i915_irq.c | 8 +-
drivers/gpu/drm/i915/i915_pci.c | 7 +-
drivers/gpu/drm/i915/i915_reg.h | 137 +++
13 files changed, 1330 insertions(+), 3 deletions(-)
create mode 100644 drivers/gpu/drm/i915/display/intel_wd.c
create mode 100644 drivers/gpu/drm/i915/display/intel_wd.h
diff --git a/drivers/gpu/drm/i915/Makefile b/drivers/gpu/drm/i915/Makefile
index 087bd9d1b397..5ee32513a945 100644
--- a/drivers/gpu/drm/i915/Makefile
+++ b/drivers/gpu/drm/i915/Makefile
@@ -287,6 +287,7 @@ i915-y += \
display/intel_vdsc.o \
display/intel_vrr.o \
display/intel_wb_connector.o\
+ display/intel_wd.o\
display/vlv_dsi.o \
display/vlv_dsi_pll.o
diff --git a/drivers/gpu/drm/i915/display/intel_acpi.c
b/drivers/gpu/drm/i915/display/intel_acpi.c
index e78430001f07..ae08db164f73 100644
--- a/drivers/gpu/drm/i915/display/intel_acpi.c
+++ b/drivers/gpu/drm/i915/display/intel_acpi.c
@@ -247,6 +247,7 @@ static u32 acpi_display_type(struct intel_connector
*connector)
case DRM_MODE_CONNECTOR_LVDS:
case DRM_MODE_CONNECTOR_eDP:
case DRM_MODE_CONNECTOR_DSI:
+ case DRM_MODE_CONNECTOR_WRITEBACK:
display_type = ACPI_DISPLAY_TYPE_INTERNAL_DIGITAL;
break;
case DRM_MODE_CONNECTOR_Unknown:
diff --git a/drivers/gpu/drm/i915/display/intel_display.c
b/drivers/gpu/drm/i915/display/intel_display.c
index eb49973621f0..6dedc7921f54 100644
--- a/drivers/gpu/drm/i915/display/intel_display.c
+++ b/drivers/gpu/drm/i915/display/intel_display.c
@@ -111,6 +111,7 @@
#include "intel_sprite.h"
#include "intel_tc.h"
#include "intel_vga.h"
+#include "intel_wd.h"
#include "i9xx_plane.h"
#include "skl_scaler.h"
#include "skl_universal_plane.h"
@@ -1544,6 +1545,72 @@ static void intel_encoders_update_complete(struct
intel_atomic_state *state)
}
}
+static void intel_queue_writeback_job(struct intel_atomic_state *state,
+ struct intel_crtc *intel_crtc, struct intel_crtc_state
*crtc_state)
+{
+ struct drm_connector_state *new_conn_state;
+ struct drm_connector *connector;
+ struct drm_i915_private *i915 = to_i915(intel_crtc->base.dev);
+ struct intel_wd *intel_wd;
+ struct intel_connector *intel_connector;
+ struct intel_digital_connector_state *intel_conn_state;
+ struct intel_encoder *encoder;
+ int i;
+
+ for_each_intel_encoder_with_wd(&i915->drm, encoder) {
+ intel_wd = enc_to_intel_wd(encoder);
+
+ if (intel_wd->wd_crtc != intel_crtc)
+ return;
+
+ }
+
+ for_each_new_connector_in_state(&state->base, connector, new_conn_state,
+ i) {
+ intel_conn_state =
to_intel_digital_connector_state(new_conn_state);
+ if (!intel_conn_state->job)
+ continue;
+ intel_connector = to_intel_connector(connector);
+ intel_writeback_queue_job(&intel_connector->wb_conn,
new_conn_state);
+ drm_dbg_kms(&i915->drm, "queueing writeback job\n");
+ }
+}
+
+static void intel_find_writeback_connector(struct intel_atomic_state *state,
+ struct intel_crtc *intel_crtc, struct intel_crtc_state
*crtc_state)
+{
+ struct drm_connector_state *new_conn_state;
+ struct drm_connector *connector;
+ struct drm_i915_private *i915 = to_i915(intel_crtc->base.dev);
+ struct intel_wd *intel_wd;
+ struct intel_encoder *encoder;
+ int i;
+
+ for_each_intel_encoder_with_wd(&i915->drm, encoder) {
+ intel_wd = enc_to_intel_wd(encoder);
+
+ if (intel_wd->wd_crtc != intel_crtc)
+ return;
+
+ }
+
+ for_each_new_connector_in_state(&state->base, connector, new_conn_state,
+ i) {
+ struct intel_connector *intel_connector;
+
+ intel_connector = to_intel_connector(connector);
+ drm_dbg_kms(&i915->drm, "[CONNECTOR:%d:%s]: status: %s\n",
+ connector->base.id, connector->name,
+
drm_get_connector_status_name(connector->status));
+ encoder = intel_connector_primary_encoder(intel_connector);
+ if (encoder->type == INTEL_OUTPUT_WD) {
+ drm_dbg_kms(&i915->drm, "encoder intel_output_wd
found\n");
+ intel_wd_enable_capture(encoder, crtc_state,
new_conn_state);
+ }
+ }
+
+}
+
static void intel_encoders_pre_pll_enable(struct intel_atomic_state *state,
struct intel_crtc *crtc)
{
@@ -1944,7 +2011,8 @@ static void hsw_crtc_enable(struct intel_atomic_state
*state,
bdw_set_pipemisc(new_crtc_state);
if (!intel_crtc_is_bigjoiner_slave(new_crtc_state) &&
- !transcoder_is_dsi(cpu_transcoder))
+ !transcoder_is_dsi(cpu_transcoder) &&
+ !transcoder_is_wd(cpu_transcoder))
hsw_configure_cpu_transcoder(new_crtc_state);
crtc->active = true;
@@ -2632,6 +2700,9 @@ static void intel_connector_verify_state(struct
intel_crtc_state *crtc_state,
if (connector->get_hw_state(connector)) {
struct intel_encoder *encoder =
intel_attached_encoder(connector);
+ if (conn_state->connector->connector_type ==
DRM_MODE_CONNECTOR_WRITEBACK)
+ return;
+
I915_STATE_WARN(!crtc_state,
"connector enabled without attached crtc\n");
@@ -5233,6 +5304,7 @@ static const char * const output_type_str[] = {
OUTPUT_TYPE(DSI),
OUTPUT_TYPE(DDI),
OUTPUT_TYPE(DP_MST),
+ OUTPUT_TYPE(WD),
};
#undef OUTPUT_TYPE
@@ -8577,6 +8649,12 @@ static void intel_atomic_commit_tail(struct
intel_atomic_state *state)
}
}
+ if (DISPLAY_VER(dev_priv) >= 12) {
+ for_each_new_intel_crtc_in_state(state, crtc, new_crtc_state,
i) {
+ intel_wd_set_vblank_event(crtc, new_crtc_state);
+ }
+ }
+
intel_encoders_update_prepare(state);
intel_dbuf_pre_plane_update(state);
@@ -8662,6 +8740,14 @@ static void intel_atomic_commit_tail(struct
intel_atomic_state *state)
intel_sagv_post_plane_update(state);
+ if (DISPLAY_VER(dev_priv) >= 12) {
+ intel_wd_prepare_out_fence(dev, &state->base);
+ for_each_new_intel_crtc_in_state(state, crtc, new_crtc_state,
i) {
+ intel_queue_writeback_job(state, crtc, new_crtc_state);
+ intel_find_writeback_connector(state, crtc,
new_crtc_state);
+ }
+ }
+
drm_atomic_helper_commit_hw_done(&state->base);
if (state->modeset) {
@@ -8966,6 +9052,7 @@ static void intel_setup_outputs(struct drm_i915_private
*dev_priv)
intel_ddi_init(dev_priv, PORT_TC1);
intel_ddi_init(dev_priv, PORT_TC2);
} else if (DISPLAY_VER(dev_priv) >= 12) {
+ intel_wd_init(dev_priv, TRANSCODER_WD_0);
intel_ddi_init(dev_priv, PORT_A);
intel_ddi_init(dev_priv, PORT_B);
intel_ddi_init(dev_priv, PORT_TC1);
diff --git a/drivers/gpu/drm/i915/display/intel_display.h
b/drivers/gpu/drm/i915/display/intel_display.h
index 8c93a5de8e07..27237d36a888 100644
--- a/drivers/gpu/drm/i915/display/intel_display.h
+++ b/drivers/gpu/drm/i915/display/intel_display.h
@@ -156,6 +156,11 @@ static inline bool transcoder_is_dsi(enum transcoder
transcoder)
return transcoder == TRANSCODER_DSI_A || transcoder == TRANSCODER_DSI_C;
}
+static inline bool transcoder_is_wd(enum transcoder transcoder)
+{
+ return transcoder == TRANSCODER_WD_0 || transcoder == TRANSCODER_WD_1;
+}
+
/*
* Global legacy plane identifier. Valid only for primary/sprite
* planes on pre-g4x, and only for primary planes on g4x-bdw.
@@ -467,6 +472,10 @@ enum hpd_pin {
for_each_intel_encoder((dev), (intel_encoder)) \
for_each_if(intel_encoder_can_psr(intel_encoder))
+#define for_each_intel_encoder_with_wd(dev, intel_encoder) \
+ for_each_intel_encoder(dev, intel_encoder) \
+ for_each_if(intel_encoder_is_wd(intel_encoder))
+
#define for_each_intel_connector_iter(intel_connector, iter) \
while ((intel_connector =
to_intel_connector(drm_connector_list_iter_next(iter))))
diff --git a/drivers/gpu/drm/i915/display/intel_display_types.h
b/drivers/gpu/drm/i915/display/intel_display_types.h
index dcb4ad43cf88..8522c348a73d 100644
--- a/drivers/gpu/drm/i915/display/intel_display_types.h
+++ b/drivers/gpu/drm/i915/display/intel_display_types.h
@@ -1293,6 +1293,11 @@ struct intel_crtc {
bool cpu_fifo_underrun_disabled;
bool pch_fifo_underrun_disabled;
+ struct {
+ struct drm_pending_vblank_event *e;
+ atomic_t work_busy;
+ wait_queue_head_t wd_wait;
+ } wd;
/* per-pipe watermark state */
struct {
/* watermarks currently being used */
@@ -1420,6 +1425,7 @@ struct cxsr_latency {
#define to_intel_crtc(x) container_of(x, struct intel_crtc, base)
#define to_intel_crtc_state(x) container_of(x, struct intel_crtc_state, uapi)
#define to_intel_connector(x) container_of(x, struct intel_connector, base)
+#define to_intel_wb_connector(x) container_of(x, struct intel_wb_connector,
base)
#define to_intel_encoder(x) container_of(x, struct intel_encoder, base)
#define to_intel_framebuffer(x) container_of(x, struct intel_framebuffer, base)
#define to_intel_plane(x) container_of(x, struct intel_plane, base)
@@ -1851,6 +1857,13 @@ static inline bool intel_encoder_is_dp(struct
intel_encoder *encoder)
}
}
+static inline bool intel_encoder_is_wd(struct intel_encoder *encoder)
+{
+ if (encoder->type == INTEL_OUTPUT_WD)
+ return true;
+ return false;
+}
+
static inline struct intel_lspcon *
enc_to_intel_lspcon(struct intel_encoder *encoder)
{
diff --git a/drivers/gpu/drm/i915/display/intel_dpll.c
b/drivers/gpu/drm/i915/display/intel_dpll.c
index 95b9d327ed4d..dfea17f5f99d 100644
--- a/drivers/gpu/drm/i915/display/intel_dpll.c
+++ b/drivers/gpu/drm/i915/display/intel_dpll.c
@@ -939,6 +939,9 @@ static int hsw_crtc_compute_clock(struct intel_crtc_state
*crtc_state)
if (IS_DG2(dev_priv))
return intel_mpllb_calc_state(crtc_state, encoder);
+ if (intel_crtc_has_type(crtc_state, INTEL_OUTPUT_WD))
+ return 0;
+
if (DISPLAY_VER(dev_priv) < 11 &&
intel_crtc_has_type(crtc_state, INTEL_OUTPUT_DSI))
return 0;
diff --git a/drivers/gpu/drm/i915/display/intel_opregion.c
b/drivers/gpu/drm/i915/display/intel_opregion.c
index f31e8c3f8ce0..b7a0ac9bad05 100644
--- a/drivers/gpu/drm/i915/display/intel_opregion.c
+++ b/drivers/gpu/drm/i915/display/intel_opregion.c
@@ -370,6 +370,9 @@ int intel_opregion_notify_encoder(struct intel_encoder
*intel_encoder,
if (ret)
return ret;
+ if (intel_encoder->type == INTEL_OUTPUT_WD)
+ return 0;
+
if (intel_encoder->type == INTEL_OUTPUT_DSI)
port = 0;
else
diff --git a/drivers/gpu/drm/i915/display/intel_wd.c
b/drivers/gpu/drm/i915/display/intel_wd.c
new file mode 100644
index 000000000000..a6c9350c3986
--- /dev/null
+++ b/drivers/gpu/drm/i915/display/intel_wd.c
@@ -0,0 +1,978 @@
+// SPDX-License-Identifier: GPL-2.0
+/*
+ * Copyright © 2021 Intel Corporation
+ *
+ * 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 (including the next
+ * paragraph) 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 AUTHORS OR COPYRIGHT HOLDERS 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:
+ * Suraj Kandpal <suraj.kand...@intel.com>
+ * Arun Murthy <arun.r.mur...@intel.com>
+ *
+ */
+
+#include <drm/drm_atomic_helper.h>
+#include <drm/drm_fourcc.h>
+
+#include "intel_atomic.h"
+#include "intel_connector.h"
+#include "intel_wd.h"
+#include "intel_fb_pin.h"
+#include "intel_de.h"
+#include "intel_wb_connector.h"
+
+enum {
+ WD_CAPTURE_4_PIX,
+ WD_CAPTURE_2_PIX,
+} wd_capture_format;
+
+static struct intel_writeback_job
+*intel_get_writeback_job_from_queue(struct intel_wd *intel_wd)
+{
+ struct intel_writeback_job *job;
+ struct drm_i915_private *i915 = to_i915(intel_wd->base.base.dev);
+ struct intel_writeback_connector *wb_conn =
+ &intel_wd->attached_connector->wb_conn;
+ unsigned long flags;
+
+ spin_lock_irqsave(&wb_conn->job_lock, flags);
+ job = list_first_entry_or_null(&wb_conn->job_queue,
+ struct intel_writeback_job,
+ list_entry);
+ spin_unlock_irqrestore(&wb_conn->job_lock, flags);
+ if (job == NULL) {
+ drm_dbg_kms(&i915->drm, "job queue is empty\n");
+ return NULL;
+ }
+
+ return job;
+}
+
+/*Check with Spec*/
+static const u32 wb_fmts[] = {
+ DRM_FORMAT_YUV444,
+ DRM_FORMAT_XYUV8888,
+ DRM_FORMAT_XBGR8888,
+ DRM_FORMAT_XRGB8888,
+ DRM_FORMAT_Y410,
+ DRM_FORMAT_YUV422,
+ DRM_FORMAT_XBGR2101010,
+ DRM_FORMAT_RGB565,
+
+};
+
+static int intel_wd_get_format(int pixel_format)
+{
+ int wd_format = -EINVAL;
+
+ switch (pixel_format) {
+ case DRM_FORMAT_XBGR8888:
+ case DRM_FORMAT_XRGB8888:
+ case DRM_FORMAT_XBGR2101010:
+ case DRM_FORMAT_XYUV8888:
+ case DRM_FORMAT_YUV444:
+ wd_format = WD_CAPTURE_4_PIX;
+ break;
+ case DRM_FORMAT_YUV422:
+ case DRM_FORMAT_RGB565:
+ wd_format = WD_CAPTURE_2_PIX;
+ break;
+ default:
+ DRM_ERROR("unsupported pixel format %x!\n",
+ pixel_format);
+ }
+
+ return wd_format;
+}
+
+static int intel_wd_verify_pix_format(int format)
+{
+ const struct drm_format_info *info = drm_format_info(format);
+ int pix_format = info->format;
+ int i = 0;
+
+ for (i = 0; i < ARRAY_SIZE(wb_fmts); i++)
+ if (pix_format == wb_fmts[i])
+ return 0;
+
+ return 1;
+}
+
+static u32 intel_wd_get_stride(const struct intel_crtc_state *crtc_state,
+ int format)
+{
+ const struct drm_format_info *info = drm_format_info(format);
+ int wd_format;
+ int hactive, pixel_size;
+
+ wd_format = intel_wd_get_format(info->format);
+
+ switch (wd_format) {
+ case WD_CAPTURE_4_PIX:
+ pixel_size = 4;
+ break;
+ case WD_CAPTURE_2_PIX:
+ pixel_size = 2;
+ break;
+ default:
+ pixel_size = 1;
+ break;
+ }
+
+ hactive = crtc_state->hw.adjusted_mode.crtc_hdisplay;
+
+ return DIV_ROUND_UP(hactive * pixel_size, 64);
+}
+
+static int intel_wd_pin_fb(struct intel_wd *intel_wd,
+ struct drm_framebuffer *fb)
+{
+ const struct i915_ggtt_view view = {
+ .type = I915_GGTT_VIEW_NORMAL,
+ };
+ struct i915_vma *vma;
+
+ vma = intel_pin_and_fence_fb_obj(fb, false, &view, false,
+ &intel_wd->flags);
+
+ if (IS_ERR(vma))
+ return PTR_ERR(vma);
+
+ intel_wd->vma = vma;
+ return 0;
+}
+
+static void intel_configure_slicing_strategy(struct drm_i915_private *i915,
+ struct intel_wd *intel_wd, u32 *tmp)
+{
+ *tmp &= ~WD_STRAT_MASK;
+ if (intel_wd->slicing_strategy == 1)
+ *tmp |= WD_SLICING_STRAT_1_1;
+ else if (intel_wd->slicing_strategy == 2)
+ *tmp |= WD_SLICING_STRAT_2_1;
+ else if (intel_wd->slicing_strategy == 3)
+ *tmp |= WD_SLICING_STRAT_4_1;
+ else if (intel_wd->slicing_strategy == 4)
+ *tmp |= WD_SLICING_STRAT_8_1;
+
+ intel_de_write(i915, WD_STREAMCAP_CTL(intel_wd->trans),
+ *tmp);
+
+}
+
+static enum drm_mode_status
+intel_wd_mode_valid(struct drm_connector *connector,
+ struct drm_display_mode *mode)
+{
+ return MODE_OK;
+}
+
+static int intel_wd_get_modes(struct drm_connector *connector)
+{
+ return 0;
+}
+
+static void intel_wd_get_config(struct intel_encoder *encoder,
+ struct intel_crtc_state *pipe_config)
+{
+ struct drm_i915_private *i915 = to_i915(encoder->base.dev);
+ struct intel_crtc *intel_crtc =
+ to_intel_crtc(pipe_config->uapi.crtc);
+
+ drm_dbg_kms(&i915->drm, "\n");
+ if (intel_crtc) {
+ memcpy(pipe_config, intel_crtc->config,
+ sizeof(*pipe_config));
+ pipe_config->output_types |= BIT(INTEL_OUTPUT_WD);
+ drm_dbg_kms(&i915->drm, "crtc found\n");
+ }
+
+}
+
+static int intel_wd_compute_config(struct intel_encoder *encoder,
+ struct intel_crtc_state *pipe_config,
+ struct drm_connector_state *conn_state)
+{
+ struct intel_wd *intel_wd = enc_to_intel_wd(encoder);
+ struct drm_i915_private *i915 = to_i915(encoder->base.dev);
+ struct intel_digital_connector_state *intel_conn_state =
+ to_intel_digital_connector_state(conn_state);
+ struct intel_writeback_job *job;
+
+ drm_dbg_kms(&i915->drm, "\n");
+ job = intel_get_writeback_job_from_queue(intel_wd);
+ if (job || intel_conn_state->job) {
+ intel_wd->wd_crtc = to_intel_crtc(pipe_config->uapi.crtc);
+ return 0;
+ }
+ drm_dbg_kms(&i915->drm, "No writebackjob in queue\n");
+
+ return 0;
+}
+
+static void intel_wd_get_power_domains(struct intel_encoder *encoder,
+ struct intel_crtc_state *crtc_state)
+{
+ struct drm_i915_private *i915 = to_i915(encoder->base.dev);
+ struct intel_wd *intel_wd = enc_to_intel_wd(encoder);
+ intel_wakeref_t wakeref;
+
+ wakeref = intel_display_power_get(i915,
+ encoder->power_domain);
+
+ intel_wd->io_wakeref[0] = wakeref;
+ drm_dbg_kms(&i915->drm, "\n");
+}
+
+static bool intel_wd_get_hw_state(struct intel_encoder *encoder,
+ enum pipe *pipe)
+{
+ bool ret = false;
+ struct drm_i915_private *dev_priv = to_i915(encoder->base.dev);
+ struct intel_wd *intel_wd = enc_to_intel_wd(encoder);
+ struct intel_crtc *wd_crtc = intel_wd->wd_crtc;
+ intel_wakeref_t wakeref;
+ u32 tmp;
+
+ if (wd_crtc)
+ return false;
+
+ wakeref = intel_display_power_get_if_enabled(dev_priv,
+ encoder->power_domain);
+ drm_dbg_kms(encoder->base.dev, "power enabled : %s\n",
+ !wakeref ? "false":"true");
+
+ if (!wakeref)
+ return false;
+
+ tmp = intel_de_read(dev_priv, PIPECONF(intel_wd->trans));
+ ret = tmp & WD_TRANS_ACTIVE;
+ drm_dbg_kms(encoder->base.dev, "trancoder enabled: %s\n",
+ ret ? "true":"false");
+ if (ret) {
+ *pipe = wd_crtc->pipe;
+ drm_dbg_kms(encoder->base.dev, "pipe selected is %d\n",
+ wd_crtc->pipe);
+ }
+ return true;
+}
+
+static int intel_wd_encoder_atomic_check(struct drm_encoder *encoder,
+ struct drm_crtc_state *crtc_st,
+ struct drm_connector_state *conn_st)
+{
+ /* Check for the format and buffers and property validity */
+ struct drm_framebuffer *fb;
+ struct intel_digital_connector_state *intel_conn_state =
+ to_intel_digital_connector_state(conn_st);
+ struct intel_writeback_job *job = intel_conn_state->job;
+ struct drm_i915_private *i915 = to_i915(encoder->dev);
+ const struct drm_display_mode *mode = &crtc_st->mode;
+ int ret;
+
+ drm_dbg_kms(&i915->drm, "\n");
+
+ if (!job) {
+ drm_dbg_kms(&i915->drm, "No writeback job created returning\n");
+ return -EINVAL;
+ }
+
+ fb = job->fb;
+
+ if (!fb) {
+ drm_dbg_kms(&i915->drm, "Invalid framebuffer\n");
+ return -EINVAL;
+ }
+
+ if (fb->width != mode->hdisplay || fb->height != mode->vdisplay) {
+ drm_dbg_kms(&i915->drm, "Invalid framebuffer size %ux%u\n",
+ fb->width, fb->height);
+ return -EINVAL;
+ }
+
+ ret = intel_wd_verify_pix_format(fb->format->format);
+
+ if (ret) {
+ drm_dbg_kms(&i915->drm, "Unsupported framebuffer format %08x\n",
+ fb->format->format);
+ return -EINVAL;
+ }
+
+ return 0;
+}
+
+
+static const struct drm_encoder_helper_funcs wd_encoder_helper_funcs = {
+ .atomic_check = intel_wd_encoder_atomic_check,
+};
+
+static void intel_wd_connector_destroy(struct drm_connector *connector)
+{
+ drm_dbg_kms(connector->dev, "\n");
+ drm_connector_cleanup(connector);
+ kfree(connector);
+}
+
+static enum drm_connector_status
+intel_wb_connector_detect(struct drm_connector *connector, bool force)
+{
+ drm_dbg_kms(connector->dev, "Writeback connector connected\n");
+ return connector_status_connected;
+}
+
+static int intel_atomic_set_writeback_fb_for_connector(
+ struct drm_connector_state *conn_state,
+ struct drm_framebuffer *fb)
+{
+ int ret;
+ struct drm_connector *conn = conn_state->connector;
+
+ ret = intel_writeback_set_fb(conn_state, fb);
+ if (ret < 0)
+ return ret;
+
+ if (fb)
+ drm_dbg_atomic(conn->dev,
+ "Set [FB:%d] for connector state %p\n",
+ fb->base.id, conn_state);
+ else
+ drm_dbg_atomic(conn->dev,
+ "Set [NOFB] for connector state %p\n",
+ conn_state);
+
+ return 0;
+}
+
+static int set_out_fence_for_connector(struct drm_atomic_state *state,
+ struct drm_connector *connector,
+ s32 __user *fence_ptr)
+{
+ unsigned int index = drm_connector_index(connector);
+
+ if (!fence_ptr)
+ return 0;
+
+ if (put_user(-1, fence_ptr))
+ return -EFAULT;
+
+ state->connectors[index].out_fence_ptr = fence_ptr;
+
+ return 0;
+}
+
+static struct drm_mode_object *__intel_object_find(struct drm_device *dev,
+ uint32_t id, uint32_t type)
+{
+ struct drm_mode_object *obj = NULL;
+
+ mutex_lock(&dev->mode_config.idr_mutex);
+ obj = idr_find(&dev->mode_config.object_idr, id);
+ if (obj && type != DRM_MODE_OBJECT_ANY && obj->type != type)
+ obj = NULL;
+ if (obj && obj->id != id)
+ obj = NULL;
+ if (obj && obj->free_cb) {
+ if (!kref_get_unless_zero(&obj->refcount))
+ obj = NULL;
+ }
+ mutex_unlock(&dev->mode_config.idr_mutex);
+
+ return obj;
+}
+
+static struct drm_framebuffer *intel_wb_framebuffer_lookup(struct drm_device
*dev,
+ uint32_t id)
+{
+ struct drm_mode_object *obj;
+ struct drm_framebuffer *fb = NULL;
+
+ obj = __intel_object_find(dev, id, DRM_MODE_OBJECT_FB);
+ if (obj)
+ fb = obj_to_fb(obj);
+ return fb;
+}
+
+static s32 *intel_get_out_fence_for_connector(struct drm_atomic_state *state,
+ struct drm_connector *connector)
+{
+ unsigned int index = drm_connector_index(connector);
+ s32 __user *fence_ptr;
+
+ fence_ptr = state->connectors[index].out_fence_ptr;
+ state->connectors[index].out_fence_ptr = NULL;
+
+ return fence_ptr;
+}
+
+static int intel_setup_out_fence(struct intel_out_fence_state *fence_state,
+ struct dma_fence *fence)
+{
+
+ fence_state->fd = get_unused_fd_flags(O_CLOEXEC);
+ if (fence_state->fd < 0)
+ return fence_state->fd;
+
+ if (put_user(fence_state->fd, fence_state->out_fence_ptr))
+ return -EFAULT;
+
+ fence_state->sync_file = sync_file_create(fence);
+ if (!fence_state->sync_file)
+ return -ENOMEM;
+
+ return 0;
+}
+
+int intel_wd_prepare_out_fence(struct drm_device *dev,
+ struct drm_atomic_state *state)
+{
+ struct drm_connector *conn;
+ struct drm_connector_state *conn_state;
+ int i, ret;
+
+ drm_dbg_kms(dev, "\n");
+
+ for_each_new_connector_in_state(state, conn, conn_state, i) {
+ struct intel_writeback_connector *wb_conn;
+ struct intel_connector *intel_conn =
+ to_intel_connector(conn);
+ struct dma_fence *fence;
+ struct intel_wd *intel_wd;
+ struct intel_digital_connector_state *intel_conn_state =
+ to_intel_digital_connector_state(conn_state);
+ s32 __user *fence_ptr;
+
+ if (conn->connector_type != DRM_MODE_CONNECTOR_WRITEBACK)
+ continue;
+
+ if (!intel_conn_state->job)
+ continue;
+
+ intel_wd = enc_to_intel_wd(intel_conn->encoder);
+ fence_ptr = intel_get_out_fence_for_connector(state, conn);
+ if (!fence_ptr)
+ continue;
+
+ intel_wd->fence_state->out_fence_ptr = fence_ptr;
+
+ wb_conn = &intel_conn->wb_conn;
+ fence = intel_writeback_get_out_fence(wb_conn);
+ if (!fence)
+ return -ENOMEM;
+
+ ret = intel_setup_out_fence(intel_wd->fence_state, fence);
+ if (ret) {
+ dma_fence_put(fence);
+ return ret;
+ }
+
+ intel_conn_state->job->out_fence = fence;
+ }
+
+ return 0;
+}
+
+void intel_wd_complete_signaling(struct intel_wd *intel_wd)
+{
+ struct intel_out_fence_state *fence_state;
+
+ fence_state = intel_wd->fence_state;
+ fd_install(fence_state->fd,
+ fence_state->sync_file->file);
+
+}
+
+static int intel_set_writeback_property(struct drm_connector *connector,
+ struct drm_connector_state *state, struct drm_property *property,
+ uint64_t val)
+{
+ struct drm_device *dev = connector->dev;
+ struct drm_i915_private *i915 = to_i915(dev);
+
+ if (property == i915->wb_fb_id_property) {
+ struct drm_framebuffer *fb;
+ int ret;
+
+ fb = intel_wb_framebuffer_lookup(dev, val);
+ ret = intel_atomic_set_writeback_fb_for_connector(state, fb);
+ if (fb)
+ drm_framebuffer_put(fb);
+ return ret;
+ } else if (property == i915->wb_out_fence_ptr_property) {
+ s32 __user *fence_ptr = u64_to_user_ptr(val);
+
+ return set_out_fence_for_connector(state->state, connector,
+ fence_ptr);
+ } else {
+ drm_dbg_atomic(connector->dev,
+ "[CONNECTOR:%d:%s] unknown property [PROP:%d:%s]]\n",
+ connector->base.id, connector->name,
+ property->base.id, property->name);
+ return -EINVAL;
+ }
+
+ return 0;
+
+}
+
+static int intel_get_writeback_property(struct drm_connector *connector,
+ const struct drm_connector_state *state, struct drm_property *property,
+ uint64_t *val)
+{
+ struct drm_device *dev = connector->dev;
+ struct drm_i915_private *i915 = to_i915(dev);
+
+ if (property == i915->wb_fb_id_property)
+ *val = 0;
+ else if (property == i915->wb_out_fence_ptr_property)
+ *val = 0;
+ else {
+ drm_dbg_atomic(&i915->drm,
+ "Unknown property [PROP:%d:%s]\n",
+ property->base.id, property->name);
+ return -EINVAL;
+ }
+
+ return 0;
+}
+
+static const struct drm_connector_funcs wd_connector_funcs = {
+ .detect = intel_wb_connector_detect,
+ .reset = drm_atomic_helper_connector_reset,
+ .destroy = intel_wd_connector_destroy,
+ .fill_modes = drm_helper_probe_single_connector_modes,
+ .atomic_destroy_state = drm_atomic_helper_connector_destroy_state,
+ .atomic_set_property = intel_set_writeback_property,
+ .atomic_get_property = intel_get_writeback_property,
+ .atomic_duplicate_state = intel_digital_connector_duplicate_state,
+};
+
+static const struct drm_connector_helper_funcs wd_connector_helper_funcs = {
+ .get_modes = intel_wd_get_modes,
+ .mode_valid = intel_wd_mode_valid,
+};
+
+static bool intel_fastset_dis(struct intel_encoder *encoder,
+ struct intel_crtc_state *pipe_config)
+{
+ pipe_config->uapi.mode_changed = true;
+ drm_dbg_kms(encoder->base.dev, "\n");
+ return false;
+}
+
+void intel_wd_init(struct drm_i915_private *i915, enum transcoder trans)
+{
+ struct intel_wd *intel_wd;
+ struct intel_encoder *encoder;
+ struct intel_out_fence_state *fence_state;
+ struct intel_connector *intel_connector;
+ struct intel_writeback_connector *wb_conn;
+ int n_formats = ARRAY_SIZE(wb_fmts);
+ int err;
+
+ drm_dbg_kms(&i915->drm, "\n");
+ intel_wd = kzalloc(sizeof(*intel_wd), GFP_KERNEL);
+ if (!intel_wd)
+ return;
+
+ intel_connector = intel_connector_alloc();
+ if (!intel_connector) {
+ kfree(intel_wd);
+ return;
+ }
+
+ fence_state = kzalloc(sizeof(*fence_state), GFP_KERNEL);
+ if (!intel_wd) {
+ kfree(intel_wd);
+ kfree(intel_connector);
+ return;
+ }
+
+ wb_conn = &intel_connector->wb_conn;
+ wb_conn->base = &intel_connector->base;
+ wb_conn->encoder = &intel_wd->base.base;
+
+ encoder = &intel_wd->base;
+ intel_wd->attached_connector = intel_connector;
+ intel_wd->fence_state = fence_state;
+ intel_wd->trans = trans;
+ intel_wd->triggered_cap_mode = 1;
+ intel_wd->frame_num = 1;
+ intel_wd->slicing_strategy = 1;
+ encoder->get_config = intel_wd_get_config;
+ encoder->compute_config = intel_wd_compute_config;
+ encoder->get_hw_state = intel_wd_get_hw_state;
+ encoder->type = INTEL_OUTPUT_WD;
+ encoder->cloneable = 0;
+ encoder->pipe_mask = ~0;
+ encoder->power_domain = POWER_DOMAIN_TRANSCODER_B;
+ encoder->get_power_domains = intel_wd_get_power_domains;
+ encoder->initial_fastset_check = intel_fastset_dis;
+ intel_connector->get_hw_state =
+ intel_connector_get_hw_state;
+
+ drm_dbg_kms(&i915->drm, "\n");
+ err = intel_writeback_connector_init(&i915->drm, wb_conn,
+ &wd_connector_funcs,
+ &wd_encoder_helper_funcs,
+ wb_fmts, n_formats);
+
+ if (err != 0) {
+ drm_dbg_kms(&i915->drm,
+ "intel_writeback_connector_init: Failed: %d\n",
+ err);
+ goto cleanup;
+ }
+
+ drm_connector_helper_add(wb_conn->base, &wd_connector_helper_funcs);
+ intel_connector_attach_encoder(intel_connector, encoder);
+ wb_conn->base->status = connector_status_connected;
+ return;
+
+cleanup:
+ kfree(intel_wd);
+ intel_connector_free(intel_connector);
+}
+
+static void intel_wd_writeback_complete(struct intel_wd *intel_wd,
+ struct intel_writeback_job *job, int status)
+{
+ struct intel_writeback_connector *wb_conn =
+ &intel_wd->attached_connector->wb_conn;
+ intel_writeback_signal_completion(wb_conn, status);
+ intel_wd_complete_signaling(intel_wd);
+}
+
+static int intel_wd_setup_transcoder(struct intel_wd *intel_wd,
+ struct intel_crtc_state *pipe_config,
+ struct intel_writeback_job *job)
+{
+ struct intel_crtc *intel_crtc = to_intel_crtc(pipe_config->uapi.crtc);
+ enum pipe pipe = intel_crtc->pipe;
+ struct drm_framebuffer *fb;
+ struct drm_i915_private *dev_priv = to_i915(intel_crtc->base.dev);
+ struct drm_gem_object *wd_fb_obj;
+ int ret;
+ u32 stride, tmp;
+ u16 hactive, vactive;
+
+ fb = job->fb;
+ wd_fb_obj = fb->obj[0];
+ if (!wd_fb_obj) {
+ drm_dbg_kms(&dev_priv->drm, "No framebuffer gem object
created\n");
+ return -1;
+ }
+ ret = intel_wd_pin_fb(intel_wd, fb);
+ drm_WARN_ON(&dev_priv->drm, ret != 0);
+
+ /*Write stride and surface registers in that particular order*/
+ stride = intel_wd_get_stride(pipe_config, fb->format->format);
+
+ tmp = intel_de_read(dev_priv, WD_STRIDE(intel_wd->trans));
+ tmp &= ~WD_STRIDE_MASK;
+ tmp |= (stride << WD_STRIDE_SHIFT);
+
+ intel_de_write(dev_priv, WD_STRIDE(intel_wd->trans), tmp);
+
+ tmp = intel_de_read(dev_priv, WD_SURF(intel_wd->trans));
+ drm_dbg_kms(&dev_priv->drm, "%d is the surface address\n", tmp);
+
+ intel_de_write(dev_priv, WD_SURF(intel_wd->trans),
+ i915_ggtt_offset(intel_wd->vma));
+
+ tmp = intel_de_read_fw(dev_priv, WD_IIR(intel_wd->trans));
+ intel_de_write_fw(dev_priv, WD_IIR(intel_wd->trans), tmp);
+
+ tmp = ~(WD_GTT_FAULT_INT|WD_WRITE_COMPLETE_INT|WD_FRAME_COMPLETE_INT|
+ WD_VBLANK_INT|WD_OVERRUN_INT|WD_CAPTURING_INT);
+ intel_de_write_fw(dev_priv, WD_IMR(intel_wd->trans), tmp);
+
+ if (intel_wd->stream_cap) {
+ tmp = intel_de_read(dev_priv,
+ WD_STREAMCAP_CTL(intel_wd->trans));
+ tmp |= WD_STREAM_CAP_MODE_EN;
+ intel_configure_slicing_strategy(dev_priv, intel_wd, &tmp);
+ }
+
+ hactive = pipe_config->uapi.mode.hdisplay;
+ vactive = pipe_config->uapi.mode.vdisplay;
+
+ drm_dbg_kms(&dev_priv->drm, "hactive : %d, vactive: %d\n", hactive,
vactive);
+
+ tmp = intel_de_read(dev_priv, HTOTAL(intel_wd->trans));
+ drm_dbg_kms(&dev_priv->drm, "hactive_reg : %d\n", tmp);
+ tmp = intel_de_read(dev_priv, VTOTAL(intel_wd->trans));
+ drm_dbg_kms(&dev_priv->drm, "vactive_reg : %d\n", tmp);
+ /* minimum hactive as per bspec: 64 pixels*/
+ if (hactive < 64)
+ drm_err(&dev_priv->drm, "hactive is less then 64 pixels\n");
+
+ intel_de_write(dev_priv, HTOTAL(intel_wd->trans), hactive - 1);
+ intel_de_write(dev_priv, VTOTAL(intel_wd->trans), vactive - 1);
+
+ tmp = intel_de_read(dev_priv, WD_TRANS_FUNC_CTL(intel_wd->trans));
+ /* select pixel format */
+ tmp &= ~WD_PIX_FMT_MASK;
+
+ switch (fb->format->format) {
+ default:
+ fallthrough;
+ case DRM_FORMAT_YUYV:
+ tmp |= WD_PIX_FMT_YUYV;
+ break;
+ case DRM_FORMAT_XYUV8888:
+ tmp |= WD_PIX_FMT_XYUV8888;
+ break;
+ case DRM_FORMAT_XBGR8888:
+ tmp |= WD_PIX_FMT_XBGR8888;
+ break;
+ case DRM_FORMAT_Y410:
+ tmp |= WD_PIX_FMT_Y410;
+ break;
+ case DRM_FORMAT_YUV422:
+ tmp |= WD_PIX_FMT_YUV422;
+ break;
+ case DRM_FORMAT_XBGR2101010:
+ tmp |= WD_PIX_FMT_XBGR2101010;
+ break;
+ case DRM_FORMAT_RGB565:
+ tmp |= WD_PIX_FMT_RGB565;
+ break;
+ }
+
+ if (intel_wd->triggered_cap_mode)
+ tmp |= WD_TRIGGERED_CAP_MODE_ENABLE;
+
+ if (intel_wd->stream_cap)
+ tmp |= WD_CTL_POINTER_DTDH;
+
+ /*select input pipe*/
+ tmp &= ~WD_INPUT_SELECT_MASK;
+ drm_dbg_kms(&dev_priv->drm, "Selected pipe is %d\n", pipe);
+ switch (pipe) {
+ default:
+ fallthrough;
+ case PIPE_A:
+ tmp |= WD_INPUT_PIPE_A;
+ break;
+ case PIPE_B:
+ tmp |= WD_INPUT_PIPE_B;
+ break;
+ case PIPE_C:
+ tmp |= WD_INPUT_PIPE_C;
+ break;
+ case PIPE_D:
+ tmp |= WD_INPUT_PIPE_D;
+ break;
+ }
+
+ /* enable DDI buffer */
+ if (!(tmp & TRANS_WD_FUNC_ENABLE))
+ tmp |= TRANS_WD_FUNC_ENABLE;
+
+ intel_de_write(dev_priv, WD_TRANS_FUNC_CTL(intel_wd->trans), tmp);
+
+ tmp = intel_de_read(dev_priv, PIPECONF(intel_wd->trans));
+ ret = tmp & WD_TRANS_ACTIVE;
+ drm_dbg_kms(&dev_priv->drm, "Trancoder enabled: %s\n", ret ?
"true":"false");
+
+ if (!ret) {
+ /*enable the transcoder */
+ tmp = intel_de_read(dev_priv, PIPECONF(intel_wd->trans));
+ tmp |= WD_TRANS_ENABLE;
+ intel_de_write(dev_priv, PIPECONF(intel_wd->trans), tmp);
+
+ /* wait for transcoder to be enabled */
+ if (intel_de_wait_for_set(dev_priv, PIPECONF(intel_wd->trans),
+ WD_TRANS_ACTIVE, 10))
+ drm_err(&dev_priv->drm, "WD transcoder not enabled\n");
+ }
+
+ return 0;
+}
+
+static void intel_wd_disable_capture(struct intel_wd *intel_wd)
+{
+ struct drm_i915_private *dev_priv = to_i915(intel_wd->base.base.dev);
+ u32 tmp;
+
+ intel_de_write_fw(dev_priv, WD_IMR(intel_wd->trans), 0xFF);
+ tmp = intel_de_read(dev_priv, PIPECONF(intel_wd->trans));
+ tmp &= WD_TRANS_DISABLE;
+ intel_de_write(dev_priv, PIPECONF(intel_wd->trans), tmp);
+
+ drm_dbg_kms(&dev_priv->drm, "WD Trans_Conf value after disable =
0x%08x\n",
+ intel_de_read(dev_priv, PIPECONF(intel_wd->trans)));
+ tmp = intel_de_read(dev_priv, WD_TRANS_FUNC_CTL(intel_wd->trans));
+ tmp |= ~TRANS_WD_FUNC_ENABLE;
+}
+
+static int intel_wd_capture(struct intel_wd *intel_wd,
+ struct intel_crtc_state *pipe_config,
+ struct intel_writeback_job *job)
+{
+ u32 tmp;
+ struct drm_i915_private *i915 = to_i915(intel_wd->base.base.dev);
+ int ret = 0, status = 0;
+ struct intel_crtc *wd_crtc = intel_wd->wd_crtc;
+ unsigned long flags;
+
+ drm_dbg_kms(&i915->drm, "\n");
+
+ if (!job->out_fence)
+ drm_dbg_kms(&i915->drm, "Not able to get out_fence for job\n");
+
+ ret = intel_wd_setup_transcoder(intel_wd, pipe_config, job);
+
+ if (ret < 0) {
+ drm_dbg_kms(&i915->drm,
+ "wd transcoder setup not completed aborting capture\n");
+ return -1;
+ }
+
+ if (wd_crtc == NULL) {
+ DRM_ERROR("CRTC not attached\n");
+ return -1;
+ }
+
+ tmp = intel_de_read_fw(i915,
+ WD_TRANS_FUNC_CTL(intel_wd->trans));
+ tmp |= START_TRIGGER_FRAME;
+ tmp &= ~WD_FRAME_NUMBER_MASK;
+ tmp |= intel_wd->frame_num;
+ intel_de_write_fw(i915,
+ WD_TRANS_FUNC_CTL(intel_wd->trans), tmp);
+
+ if (!intel_de_wait_for_set(i915, WD_IIR(intel_wd->trans),
+ WD_FRAME_COMPLETE_INT, 100)){
+ drm_dbg_kms(&i915->drm, "frame captured\n");
+ tmp = intel_de_read(i915, WD_IIR(intel_wd->trans));
+ drm_dbg_kms(&i915->drm, "iir value : %d\n", tmp);
+ status = 0;
+ } else {
+ drm_dbg_kms(&i915->drm, "frame not captured triggering stop
frame\n");
+ tmp = intel_de_read(i915,
+ WD_TRANS_FUNC_CTL(intel_wd->trans));
+ tmp |= STOP_TRIGGER_FRAME;
+ intel_de_write(i915,
+ WD_TRANS_FUNC_CTL(intel_wd->trans), tmp);
+ status = -1;
+ }
+
+ intel_de_write(i915, WD_IIR(intel_wd->trans), tmp);
+ intel_wd_writeback_complete(intel_wd, job, status);
+ if (intel_get_writeback_job_from_queue(intel_wd) == NULL)
+ intel_wd_disable_capture(intel_wd);
+ if (wd_crtc->wd.e) {
+ spin_lock_irqsave(&i915->drm.event_lock, flags);
+ drm_dbg_kms(&i915->drm, "send %p\n", wd_crtc->wd.e);
+ drm_crtc_send_vblank_event(&wd_crtc->base,
+ wd_crtc->wd.e);
+ spin_unlock_irqrestore(&i915->drm.event_lock, flags);
+ wd_crtc->wd.e = NULL;
+ } else {
+ DRM_ERROR("Event NULL! %p, %p\n", &i915->drm,
+ wd_crtc);
+ }
+ return 0;
+
+}
+
+void intel_wd_enable_capture(struct intel_encoder *encoder,
+ struct intel_crtc_state *pipe_config,
+ struct drm_connector_state *conn_state)
+{
+ struct drm_i915_private *i915 = to_i915(encoder->base.dev);
+ struct intel_wd *intel_wd = enc_to_intel_wd(encoder);
+ struct intel_writeback_job *job;
+
+ drm_dbg_kms(&i915->drm, "\n");
+
+ job = intel_get_writeback_job_from_queue(intel_wd);
+ if (job == NULL) {
+ drm_dbg_kms(&i915->drm,
+ "job queue is empty not capturing any frame\n");
+ return;
+ }
+
+ intel_wd_capture(intel_wd, pipe_config, job);
+ intel_wd->frame_num += 1;
+
+}
+
+void intel_wd_set_vblank_event(struct intel_crtc *intel_crtc,
+ struct intel_crtc_state *intel_crtc_state)
+{
+ struct drm_i915_private *i915 = to_i915(intel_crtc->base.dev);
+ struct drm_crtc_state *state = &intel_crtc_state->uapi;
+ struct intel_encoder *encoder;
+ struct intel_wd *intel_wd;
+
+ for_each_intel_encoder_with_wd(&i915->drm, encoder) {
+ intel_wd = enc_to_intel_wd(encoder);
+
+ if (!intel_wd->wd_crtc) {
+ drm_dbg_kms(&i915->drm, "wd crtc not found\n");
+ return;
+ }
+ }
+
+ if (intel_crtc == intel_wd->wd_crtc) {
+ intel_crtc->wd.e = state->event;
+ state->event = NULL;
+ if (intel_crtc->wd.e)
+ drm_dbg_kms(&i915->drm, "WD event:%p\n",
+ intel_crtc->wd.e);
+ else
+ drm_dbg_kms(&i915->drm, "WD no event\n");
+ }
+}
+
+void intel_wd_handle_isr(struct drm_i915_private *i915)
+{
+ u32 iir_value = 0;
+ struct intel_encoder *encoder;
+ struct intel_wd *intel_wd;
+
+ iir_value = intel_de_read(i915, WD_IIR(TRANSCODER_WD_0));
+ drm_dbg_kms(&i915->drm, "\n");
+
+ for_each_intel_encoder_with_wd(&i915->drm, encoder) {
+ intel_wd = enc_to_intel_wd(encoder);
+
+ if (!intel_wd->wd_crtc) {
+ DRM_ERROR("NO CRTC attached with WD\n");
+ goto clear_iir;
+ }
+ }
+
+ if (iir_value & WD_VBLANK_INT)
+ drm_dbg_kms(&i915->drm, "vblank interrupt for wd transcoder\n");
+ if (iir_value & WD_WRITE_COMPLETE_INT)
+ drm_dbg_kms(&i915->drm,
+ "wd write complete interrupt encountered\n");
+ else
+ DRM_INFO("iir: %x\n", iir_value);
+ if (iir_value & WD_FRAME_COMPLETE_INT) {
+ drm_dbg_kms(&i915->drm,
+ "frame complete interrupt for wd transcoder\n");
+ return;
+ }
+clear_iir:
+ intel_de_write(i915, WD_IIR(TRANSCODER_WD_0), iir_value);
+}
diff --git a/drivers/gpu/drm/i915/display/intel_wd.h
b/drivers/gpu/drm/i915/display/intel_wd.h
new file mode 100644
index 000000000000..2309afa23bb8
--- /dev/null
+++ b/drivers/gpu/drm/i915/display/intel_wd.h
@@ -0,0 +1,82 @@
+/* SPDX-License-Identifier: GPL-2.0
+ * Copyright © 2021 Intel Corporation
+ *
+ * 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 (including the next
+ * paragraph) 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 AUTHORS OR COPYRIGHT HOLDERS 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.
+ *
+ * Author :
+ * Suraj Kandpal<suraj.kand...@intel.com>
+ * Arun Murthy<arun.r.mur...@intel.com>
+ */
+
+#ifndef _INTEL_WD_H
+#define _INTEL_WD_H
+
+#include <drm/drm_crtc.h>
+#include <linux/sync_file.h>
+
+#include "intel_display_types.h"
+
+#define I915_MAX_WD_TANSCODERS 2
+
+struct intel_out_fence_state {
+ s32 __user *out_fence_ptr;
+ struct sync_file *sync_file;
+ int fd;
+};
+
+struct intel_wd {
+ struct intel_encoder base;
+ struct intel_crtc *wd_crtc;
+ struct intel_out_fence_state *fence_state;
+ intel_wakeref_t io_wakeref[I915_MAX_WD_TANSCODERS];
+ struct intel_connector *attached_connector;
+ enum transcoder trans;
+ struct i915_vma *vma;
+ unsigned long flags;
+ struct intel_writeback_job *job;
+ int triggered_cap_mode;
+ int frame_num;
+ bool stream_cap;
+ bool start_capture;
+ int slicing_strategy;
+};
+
+struct intel_wd_clk_vals {
+ u32 cdclk;
+ u16 link_m;
+ u16 link_n;
+};
+
+extern struct sync_file *sync_file_create(struct dma_fence *fence);
+static inline struct intel_wd *enc_to_intel_wd(struct intel_encoder *encoder)
+{
+ return container_of(&encoder->base, struct intel_wd, base.base);
+}
+void intel_wd_init(struct drm_i915_private *dev_priv, enum transcoder trans);
+void intel_wd_enable_capture(struct intel_encoder *encoder,
+ struct intel_crtc_state *pipe_config,
+ struct drm_connector_state *conn_state);
+void intel_wd_handle_isr(struct drm_i915_private *dev_priv);
+void intel_wd_set_vblank_event(struct intel_crtc *crtc,
+ struct intel_crtc_state *state);
+int intel_wd_prepare_out_fence(struct drm_device *dev,
+ struct drm_atomic_state *state);
+void intel_wd_complete_signaling(struct intel_wd *intel_wd);
+#endif/* _INTEL_WD_H */
diff --git a/drivers/gpu/drm/i915/i915_drv.h b/drivers/gpu/drm/i915/i915_drv.h
index 9a86ee88089e..b7e92a18125c 100644
--- a/drivers/gpu/drm/i915/i915_drv.h
+++ b/drivers/gpu/drm/i915/i915_drv.h
@@ -38,6 +38,8 @@
#include <linux/pm_qos.h>
#include <drm/drm_connector.h>
+#include <drm/drm_writeback.h>
+#include <drm/i915_mei_hdcp_interface.h>
#include <drm/ttm/ttm_device.h>
#include "display/intel_bios.h"
diff --git a/drivers/gpu/drm/i915/i915_irq.c b/drivers/gpu/drm/i915/i915_irq.c
index 73cebc6aa650..95a6a8f7a911 100644
--- a/drivers/gpu/drm/i915/i915_irq.c
+++ b/drivers/gpu/drm/i915/i915_irq.c
@@ -42,6 +42,7 @@
#include "display/intel_hotplug.h"
#include "display/intel_lpe_audio.h"
#include "display/intel_psr.h"
+#include "display/intel_wd.h"
#include "gt/intel_breadcrumbs.h"
#include "gt/intel_gt.h"
@@ -2342,6 +2343,11 @@ gen8_de_misc_irq_handler(struct drm_i915_private
*dev_priv, u32 iir)
found = true;
}
+ if (iir & GEN8_DE_MISC_WD0) {
+ intel_wd_handle_isr(dev_priv);
+ found = true;
+ }
+
if (iir & GEN8_DE_EDP_PSR) {
struct intel_encoder *encoder;
u32 psr_iir;
@@ -3767,7 +3773,7 @@ static void gen8_de_irq_postinstall(struct
drm_i915_private *dev_priv)
u32 de_pipe_enables;
u32 de_port_masked = gen8_de_port_aux_mask(dev_priv);
u32 de_port_enables;
- u32 de_misc_masked = GEN8_DE_EDP_PSR;
+ u32 de_misc_masked = GEN8_DE_EDP_PSR | GEN8_DE_MISC_WD0;
u32 trans_mask = BIT(TRANSCODER_A) | BIT(TRANSCODER_B) |
BIT(TRANSCODER_C) | BIT(TRANSCODER_D);
enum pipe pipe;
diff --git a/drivers/gpu/drm/i915/i915_pci.c b/drivers/gpu/drm/i915/i915_pci.c
index 67b89769f577..a524e0f030b6 100644
--- a/drivers/gpu/drm/i915/i915_pci.c
+++ b/drivers/gpu/drm/i915/i915_pci.c
@@ -853,7 +853,8 @@ static const struct intel_device_info jsl_info = {
.display.pipe_mask = BIT(PIPE_A) | BIT(PIPE_B) | BIT(PIPE_C) |
BIT(PIPE_D), \
.display.cpu_transcoder_mask = BIT(TRANSCODER_A) | BIT(TRANSCODER_B) | \
BIT(TRANSCODER_C) | BIT(TRANSCODER_D) | \
- BIT(TRANSCODER_DSI_0) | BIT(TRANSCODER_DSI_1), \
+ BIT(TRANSCODER_DSI_0) | BIT(TRANSCODER_DSI_1)| \
+ BIT(TRANSCODER_WD_0), \
.pipe_offsets = { \
[TRANSCODER_A] = PIPE_A_OFFSET, \
[TRANSCODER_B] = PIPE_B_OFFSET, \
@@ -861,6 +862,8 @@ static const struct intel_device_info jsl_info = {
[TRANSCODER_D] = PIPE_D_OFFSET, \
[TRANSCODER_DSI_0] = PIPE_DSI0_OFFSET, \
[TRANSCODER_DSI_1] = PIPE_DSI1_OFFSET, \
+ [TRANSCODER_WD_0] = PIPE_WD0_OFFSET, \
+ [TRANSCODER_WD_1] = PIPE_WD1_OFFSET, \
}, \
.trans_offsets = { \
[TRANSCODER_A] = TRANSCODER_A_OFFSET, \
@@ -869,6 +872,8 @@ static const struct intel_device_info jsl_info = {
[TRANSCODER_D] = TRANSCODER_D_OFFSET, \
[TRANSCODER_DSI_0] = TRANSCODER_DSI0_OFFSET, \
[TRANSCODER_DSI_1] = TRANSCODER_DSI1_OFFSET, \
+ [TRANSCODER_WD_0] = TRANSCODER_WD0_OFFSET, \
+ [TRANSCODER_WD_1] = TRANSCODER_WD1_OFFSET, \
}, \
TGL_CURSOR_OFFSETS, \
.has_global_mocs = 1, \
diff --git a/drivers/gpu/drm/i915/i915_reg.h b/drivers/gpu/drm/i915/i915_reg.h
index 6396afd77209..abc41e7de0b5 100644
--- a/drivers/gpu/drm/i915/i915_reg.h
+++ b/drivers/gpu/drm/i915/i915_reg.h
@@ -3797,6 +3797,11 @@
#define PIPE_DSI0_OFFSET 0x7b000
#define PIPE_DSI1_OFFSET 0x7b800
+/* WD 0 and 1 */
+#define PIPE_WD0_OFFSET 0x7e000
+#define PIPE_WD1_OFFSET 0x7d000
+
+
#define PIPECONF(pipe) _MMIO_PIPE2(pipe, _PIPEACONF)
#define PIPEDSL(pipe) _MMIO_PIPE2(pipe, _PIPEADSL)
#define PIPEFRAME(pipe) _MMIO_PIPE2(pipe, _PIPEAFRAMEHIGH)
@@ -4461,6 +4466,10 @@
#define _PIPEDSI0CONF 0x7b008
#define _PIPEDSI1CONF 0x7b808
+/* WD 0 and 1 */
+#define _PIPEWD0CONF 0x7e008
+#define _PIPEWD1CONF 0x7d008
+
/* Sprite A control */
#define _DVSACNTR 0x72180
#define DVS_ENABLE REG_BIT(31)
@@ -5707,6 +5716,7 @@
#define GEN8_DE_MISC_IER _MMIO(0x4446c)
#define GEN8_DE_MISC_GSE (1 << 27)
#define GEN8_DE_EDP_PSR (1 << 19)
+#define GEN8_DE_MISC_WD0 (1 << 23)
#define GEN8_PCU_ISR _MMIO(0x444e0)
#define GEN8_PCU_IMR _MMIO(0x444e4)
@@ -8847,6 +8857,133 @@ enum skl_power_gate {
#define DSB_ENABLE (1 << 31)
#define DSB_STATUS (1 << 0)
+#define TGL_ROOT_DEVICE_ID 0x9A00
+#define TGL_ROOT_DEVICE_MASK 0xFF00
+#define TGL_ROOT_DEVICE_SKU_MASK 0xF
+#define TGL_ROOT_DEVICE_SKU_ULX 0x2
+#define TGL_ROOT_DEVICE_SKU_ULT 0x4
+
+/* Gen12 WD */
+#define _MMIO_WD(tc, wd0, wd1) _MMIO_TRANS((tc) - TRANSCODER_WD_0, \
+ wd0, wd1)
+
+#define WD_TRANS_ENABLE (1 << 31)
+#define WD_TRANS_DISABLE 0
+#define WD_TRANS_ACTIVE (1 << 30)
+
+/* WD transcoder control */
+#define _WD_TRANS_FUNC_CTL_0 0x6e400
+#define _WD_TRANS_FUNC_CTL_1 0x6ec00
+#define WD_TRANS_FUNC_CTL(tc) _MMIO_WD(tc,\
+ _WD_TRANS_FUNC_CTL_0,\
+ _WD_TRANS_FUNC_CTL_1)
+
+#define TRANS_WD_FUNC_ENABLE (1 << 31)
+#define WD_TRIGGERED_CAP_MODE_ENABLE (1 << 30)
+#define START_TRIGGER_FRAME (1 << 29)
+#define STOP_TRIGGER_FRAME (1 << 28)
+#define WD_CTL_POINTER_ETEH (0 << 18)
+#define WD_CTL_POINTER_ETDH (1 << 18)
+#define WD_CTL_POINTER_DTDH (2 << 18)
+#define WD_INPUT_SELECT_MASK (7 << 12)
+#define WD_INPUT_PIPE_A (0 << 12)
+#define WD_INPUT_PIPE_B (5 << 12)
+#define WD_INPUT_PIPE_C (6 << 12)
+#define WD_INPUT_PIPE_D (7 << 12)
+
+#define WD_PIX_FMT_MASK (0x3 << 20)
+#define WD_PIX_FMT_YUYV (0x1 << 20)
+#define WD_PIX_FMT_XYUV8888 (0x2 << 20)
+#define WD_PIX_FMT_XBGR8888 (0x3 << 20)
+#define WD_PIX_FMT_Y410 (0x4 << 20)
+#define WD_PIX_FMT_YUV422 (0x5 << 20)
+#define WD_PIX_FMT_XBGR2101010 (0x6 << 20)
+#define WD_PIX_FMT_RGB565 (0x7 << 20)
+
+#define WD_FRAME_NUMBER_MASK 15
+
+#define _WD_STRIDE_0 0x6e510
+#define _WD_STRIDE_1 0x6ed10
+#define WD_STRIDE(tc) _MMIO_WD(tc,\
+ _WD_STRIDE_0,\
+ _WD_STRIDE_1)
+#define WD_STRIDE_SHIFT 6
+#define WD_STRIDE_MASK (0x3ff << WD_STRIDE_SHIFT)
+
+#define _WD_STREAMCAP_CTL0 0x6e590
+#define _WD_STREAMCAP_CTL1 0x6ed90
+#define WD_STREAMCAP_CTL(tc) _MMIO_WD(tc,\
+ _WD_STREAMCAP_CTL0,\
+ _WD_STREAMCAP_CTL1)
+
+#define WD_STREAM_CAP_MODE_EN (1 << 31)
+#define WD_STRAT_MASK (3 << 24)
+#define WD_SLICING_STRAT_1_1 (0 << 24)
+#define WD_SLICING_STRAT_2_1 (1 << 24)
+#define WD_SLICING_STRAT_4_1 (2 << 24)
+#define WD_SLICING_STRAT_8_1 (3 << 24)
+#define WD_STREAM_OVERRUN_STATUS 1
+
+#define _WD_SURF_0 0x6e514
+#define _WD_SURF_1 0x6ed14
+#define WD_SURF(tc) _MMIO_WD(tc,\
+ _WD_SURF_0,\
+ _WD_SURF_1)
+
+#define _WD_IMR_0 0x6e560
+#define _WD_IMR_1 0x6ed60
+#define WD_IMR(tc) _MMIO_WD(tc,\
+ _WD_IMR_0,\
+ _WD_IMR_1)
+#define WD_FRAME_COMPLETE_INT (1 << 7)
+#define WD_GTT_FAULT_INT (1 << 6)
+#define WD_VBLANK_INT (1 << 5)
+#define WD_OVERRUN_INT (1 << 4)
+#define WD_CAPTURING_INT (1 << 3)
+#define WD_WRITE_COMPLETE_INT (1 << 2)
+
+#define _WD_IIR_0 0x6e564
+#define _WD_IIR_1 0x6ed64
+#define WD_IIR(tc) _MMIO_WD(tc,\
+ _WD_IIR_0,\
+ _WD_IIR_1)
+
+#define _WD_FRAME_STATUS_0 0x6e56b
+#define _WD_FRAME_STATUS_1 0x6ed6b
+#define WD_FRAME_STATUS(tc) _MMIO_WD(tc,\
+ _WD_FRAME_STATUS_0,\
+ _WD_FRAME_STATUS_1)
+
+#define WD_FRAME_COMPLETE (1 << 31)
+#define WD_STATE_IDLE (0 << 24)
+#define WD_STATE_CAPSTART (1 << 24)
+#define WD_STATE_FRAME_START (2 << 24)
+#define WD_STATE_CAPACITIVE (3 << 24)
+#define WD_STATE_TG_DONE (4 << 24)
+#define WD_STATE_WDX_DONE (5 << 24)
+#define WD_STATE_QUICK_CAP (6 << 24)
+
+#define _WD_27_M_0 0x6e524
+#define _WD_27_M_1 0x6ed24
+#define WD_27_M(tc) _MMIO_WD(tc,\
+ _WD_27_M_0,\
+ _WD_27_M_1)
+
+#define _WD_27_N_0 0x6e528
+
+//Address looks wrong in bspec:
+#define _WD_27_N_1 0x6ec28
+#define WD_27_N(tc) _MMIO_WD(tc,\
+ _WD_27_N_0,\
+ _WD_27_N_1)
+
+#define _WD_TAIL_CFG_0 0x6e520
+#define _WD_TAIL_CFG_1 0x6ed20
+
+#define WD_TAIL_CFG(tc) _MMIO_WD(tc,\
+ _WD_TAIL_CFG_0,\
+ _WD_TAIL_CFG_1)
+
#define CLKREQ_POLICY _MMIO(0x101038)
#define CLKREQ_POLICY_MEM_UP_OVRD REG_BIT(1)
--
2.35.1
