[PATCH v2 24/37] drm: xlnx: zynqmp_dpsub: Move CRTC handling to zynqmp_kms.c
Laurent Pinchart
laurent.pinchart at ideasonboard.com
Wed Sep 28 22:47:06 UTC 2022
Decouple the CRTC handling from the display controller programming by
moving the corresponding code from zynqmp_disp.c to zynqmp_kms.c. This
prepares for using the DPSUB with a live video input, without creating a
DRM CRTC in the DPSUB driver.
Signed-off-by: Laurent Pinchart <laurent.pinchart at ideasonboard.com>
---
drivers/gpu/drm/xlnx/zynqmp_disp.c | 251 +++--------------------------
drivers/gpu/drm/xlnx/zynqmp_disp.h | 21 ++-
drivers/gpu/drm/xlnx/zynqmp_dp.c | 3 +-
drivers/gpu/drm/xlnx/zynqmp_kms.c | 190 +++++++++++++++++++++-
drivers/gpu/drm/xlnx/zynqmp_kms.h | 2 +
5 files changed, 232 insertions(+), 235 deletions(-)
diff --git a/drivers/gpu/drm/xlnx/zynqmp_disp.c b/drivers/gpu/drm/xlnx/zynqmp_disp.c
index 3b3aef42a390..7bf7e2113ef0 100644
--- a/drivers/gpu/drm/xlnx/zynqmp_disp.c
+++ b/drivers/gpu/drm/xlnx/zynqmp_disp.c
@@ -11,9 +11,7 @@
#include <drm/drm_atomic.h>
#include <drm/drm_atomic_helper.h>
-#include <drm/drm_atomic_uapi.h>
#include <drm/drm_blend.h>
-#include <drm/drm_crtc.h>
#include <drm/drm_device.h>
#include <drm/drm_fb_cma_helper.h>
#include <drm/drm_fourcc.h>
@@ -21,18 +19,14 @@
#include <drm/drm_managed.h>
#include <drm/drm_plane.h>
#include <drm/drm_plane_helper.h>
-#include <drm/drm_vblank.h>
#include <linux/clk.h>
-#include <linux/delay.h>
#include <linux/dma/xilinx_dpdma.h>
#include <linux/dma-mapping.h>
#include <linux/dmaengine.h>
#include <linux/module.h>
#include <linux/of.h>
#include <linux/platform_device.h>
-#include <linux/pm_runtime.h>
-#include <linux/spinlock.h>
#include "zynqmp_disp.h"
#include "zynqmp_disp_regs.h"
@@ -89,16 +83,6 @@ struct zynqmp_disp_format {
const u32 *sf;
};
-/**
- * enum zynqmp_disp_layer_id - Layer identifier
- * @ZYNQMP_DISP_LAYER_VID: Video layer
- * @ZYNQMP_DISP_LAYER_GFX: Graphics layer
- */
-enum zynqmp_disp_layer_id {
- ZYNQMP_DISP_LAYER_VID,
- ZYNQMP_DISP_LAYER_GFX
-};
-
/**
* enum zynqmp_disp_layer_mode - Layer mode
* @ZYNQMP_DISP_LAYER_NONLIVE: non-live (memory) mode
@@ -144,7 +128,7 @@ struct zynqmp_disp_layer_info {
* @mode: Current operation mode
*/
struct zynqmp_disp_layer {
- enum zynqmp_disp_layer_id id;
+ enum zynqmp_dpsub_layer_id id;
struct zynqmp_disp *disp;
const struct zynqmp_disp_layer_info *info;
@@ -399,12 +383,12 @@ static void zynqmp_disp_avbuf_write(struct zynqmp_disp *disp, int reg, u32 val)
static bool zynqmp_disp_layer_is_gfx(const struct zynqmp_disp_layer *layer)
{
- return layer->id == ZYNQMP_DISP_LAYER_GFX;
+ return layer->id == ZYNQMP_DPSUB_LAYER_GFX;
}
static bool zynqmp_disp_layer_is_video(const struct zynqmp_disp_layer *layer)
{
- return layer->id == ZYNQMP_DISP_LAYER_VID;
+ return layer->id == ZYNQMP_DPSUB_LAYER_VID;
}
/**
@@ -883,35 +867,6 @@ static void zynqmp_disp_audio_disable(struct zynqmp_disp *disp)
ZYNQMP_DISP_AUD_SOFT_RESET_AUD_SRST);
}
-/* -----------------------------------------------------------------------------
- * ZynqMP Display external functions for zynqmp_dp
- */
-
-/**
- * zynqmp_disp_handle_vblank - Handle the vblank event
- * @disp: Display controller
- *
- * This function handles the vblank interrupt, and sends an event to
- * CRTC object. This will be called by the DP vblank interrupt handler.
- */
-void zynqmp_disp_handle_vblank(struct zynqmp_disp *disp)
-{
- struct drm_crtc *crtc = &disp->dpsub->crtc;
-
- drm_crtc_handle_vblank(crtc);
-}
-
-/**
- * zynqmp_disp_get_crtc_mask - Return the CRTC bit mask
- * @disp: Display controller
- *
- * Return: the crtc mask of the zyqnmp_disp CRTC.
- */
-uint32_t zynqmp_disp_get_crtc_mask(struct zynqmp_disp *disp)
-{
- return drm_crtc_mask(&disp->dpsub->crtc);
-}
-
/* -----------------------------------------------------------------------------
* ZynqMP Display Layer & DRM Plane
*/
@@ -1111,7 +1066,7 @@ zynqmp_disp_plane_atomic_check(struct drm_plane *plane,
false, false);
}
-static void
+void
zynqmp_disp_plane_atomic_disable(struct drm_plane *plane,
struct drm_atomic_state *state)
{
@@ -1301,12 +1256,12 @@ static int zynqmp_disp_layer_request_dma(struct zynqmp_disp *disp,
static int zynqmp_disp_create_layers(struct zynqmp_disp *disp)
{
static const struct zynqmp_disp_layer_info layer_info[] = {
- [ZYNQMP_DISP_LAYER_VID] = {
+ [ZYNQMP_DPSUB_LAYER_VID] = {
.formats = avbuf_vid_fmts,
.num_formats = ARRAY_SIZE(avbuf_vid_fmts),
.num_channels = 3,
},
- [ZYNQMP_DISP_LAYER_GFX] = {
+ [ZYNQMP_DPSUB_LAYER_GFX] = {
.formats = avbuf_gfx_fmts,
.num_formats = ARRAY_SIZE(avbuf_gfx_fmts),
.num_channels = 1,
@@ -1336,14 +1291,14 @@ static int zynqmp_disp_create_layers(struct zynqmp_disp *disp)
}
/* -----------------------------------------------------------------------------
- * ZynqMP Display & DRM CRTC
+ * ZynqMP Display
*/
/**
* zynqmp_disp_enable - Enable the display controller
* @disp: Display controller
*/
-static void zynqmp_disp_enable(struct zynqmp_disp *disp)
+void zynqmp_disp_enable(struct zynqmp_disp *disp)
{
zynqmp_disp_blend_set_output_format(disp, ZYNQMP_DPSUB_FORMAT_RGB);
zynqmp_disp_blend_set_bg_color(disp, 0, 0, 0);
@@ -1363,7 +1318,7 @@ static void zynqmp_disp_enable(struct zynqmp_disp *disp)
* zynqmp_disp_disable - Disable the display controller
* @disp: Display controller
*/
-static void zynqmp_disp_disable(struct zynqmp_disp *disp)
+void zynqmp_disp_disable(struct zynqmp_disp *disp)
{
zynqmp_disp_audio_disable(disp);
@@ -1372,8 +1327,15 @@ static void zynqmp_disp_disable(struct zynqmp_disp *disp)
zynqmp_disp_avbuf_disable(disp);
}
-static int zynqmp_disp_setup_clock(struct zynqmp_disp *disp,
- unsigned long mode_clock)
+/**
+ * zynqmp_disp_setup_clock - Configure the display controller pixel clock rate
+ * @disp: Display controller
+ * @mode_clock: The pixel clock rate, in Hz
+ *
+ * Return: 0 on success, or a negative error clock otherwise
+ */
+int zynqmp_disp_setup_clock(struct zynqmp_disp *disp,
+ unsigned long mode_clock)
{
unsigned long rate;
long diff;
@@ -1399,186 +1361,13 @@ static int zynqmp_disp_setup_clock(struct zynqmp_disp *disp,
return 0;
}
-static inline struct zynqmp_disp *crtc_to_disp(struct drm_crtc *crtc)
-{
- return container_of(crtc, struct zynqmp_dpsub, crtc)->disp;
-}
-
-static void
-zynqmp_disp_crtc_atomic_enable(struct drm_crtc *crtc,
- struct drm_atomic_state *state)
-{
- struct zynqmp_disp *disp = crtc_to_disp(crtc);
- struct drm_display_mode *adjusted_mode = &crtc->state->adjusted_mode;
- int ret, vrefresh;
-
- pm_runtime_get_sync(disp->dev);
-
- zynqmp_disp_setup_clock(disp, adjusted_mode->clock * 1000);
-
- ret = clk_prepare_enable(disp->dpsub->vid_clk);
- if (ret) {
- dev_err(disp->dev, "failed to enable the video clock\n");
- pm_runtime_put_sync(disp->dev);
- return;
- }
-
- zynqmp_disp_enable(disp);
-
- /* Delay of 3 vblank intervals for timing gen to be stable */
- vrefresh = (adjusted_mode->clock * 1000) /
- (adjusted_mode->vtotal * adjusted_mode->htotal);
- msleep(3 * 1000 / vrefresh);
-}
-
-static void
-zynqmp_disp_crtc_atomic_disable(struct drm_crtc *crtc,
- struct drm_atomic_state *state)
-{
- struct zynqmp_disp *disp = crtc_to_disp(crtc);
- struct drm_plane_state *old_plane_state;
-
- /*
- * Disable the plane if active. The old plane state can be NULL in the
- * .shutdown() path if the plane is already disabled, skip
- * zynqmp_disp_plane_atomic_disable() in that case.
- */
- old_plane_state = drm_atomic_get_old_plane_state(state, crtc->primary);
- if (old_plane_state)
- zynqmp_disp_plane_atomic_disable(crtc->primary, state);
-
- zynqmp_disp_disable(disp);
-
- drm_crtc_vblank_off(crtc);
-
- spin_lock_irq(&crtc->dev->event_lock);
- if (crtc->state->event) {
- drm_crtc_send_vblank_event(crtc, crtc->state->event);
- crtc->state->event = NULL;
- }
- spin_unlock_irq(&crtc->dev->event_lock);
-
- clk_disable_unprepare(disp->dpsub->vid_clk);
- pm_runtime_put_sync(disp->dev);
-}
-
-static int zynqmp_disp_crtc_atomic_check(struct drm_crtc *crtc,
- struct drm_atomic_state *state)
-{
- return drm_atomic_add_affected_planes(state, crtc);
-}
-
-static void
-zynqmp_disp_crtc_atomic_begin(struct drm_crtc *crtc,
- struct drm_atomic_state *state)
-{
- drm_crtc_vblank_on(crtc);
-}
-
-static void
-zynqmp_disp_crtc_atomic_flush(struct drm_crtc *crtc,
- struct drm_atomic_state *state)
-{
- if (crtc->state->event) {
- struct drm_pending_vblank_event *event;
-
- /* Consume the flip_done event from atomic helper. */
- event = crtc->state->event;
- crtc->state->event = NULL;
-
- event->pipe = drm_crtc_index(crtc);
-
- WARN_ON(drm_crtc_vblank_get(crtc) != 0);
-
- spin_lock_irq(&crtc->dev->event_lock);
- drm_crtc_arm_vblank_event(crtc, event);
- spin_unlock_irq(&crtc->dev->event_lock);
- }
-}
-
-static const struct drm_crtc_helper_funcs zynqmp_disp_crtc_helper_funcs = {
- .atomic_enable = zynqmp_disp_crtc_atomic_enable,
- .atomic_disable = zynqmp_disp_crtc_atomic_disable,
- .atomic_check = zynqmp_disp_crtc_atomic_check,
- .atomic_begin = zynqmp_disp_crtc_atomic_begin,
- .atomic_flush = zynqmp_disp_crtc_atomic_flush,
-};
-
-static int zynqmp_disp_crtc_enable_vblank(struct drm_crtc *crtc)
-{
- struct zynqmp_disp *disp = crtc_to_disp(crtc);
-
- zynqmp_dp_enable_vblank(disp->dpsub->dp);
-
- return 0;
-}
-
-static void zynqmp_disp_crtc_disable_vblank(struct drm_crtc *crtc)
-{
- struct zynqmp_disp *disp = crtc_to_disp(crtc);
-
- zynqmp_dp_disable_vblank(disp->dpsub->dp);
-}
-
-static const struct drm_crtc_funcs zynqmp_disp_crtc_funcs = {
- .destroy = drm_crtc_cleanup,
- .set_config = drm_atomic_helper_set_config,
- .page_flip = drm_atomic_helper_page_flip,
- .reset = drm_atomic_helper_crtc_reset,
- .atomic_duplicate_state = drm_atomic_helper_crtc_duplicate_state,
- .atomic_destroy_state = drm_atomic_helper_crtc_destroy_state,
- .enable_vblank = zynqmp_disp_crtc_enable_vblank,
- .disable_vblank = zynqmp_disp_crtc_disable_vblank,
-};
-
-static int zynqmp_disp_create_crtc(struct zynqmp_disp *disp)
-{
- struct drm_plane *plane = &disp->dpsub->planes[ZYNQMP_DISP_LAYER_GFX];
- struct drm_crtc *crtc = &disp->dpsub->crtc;
- int ret;
-
- ret = drm_crtc_init_with_planes(disp->drm, crtc, plane,
- NULL, &zynqmp_disp_crtc_funcs, NULL);
- if (ret < 0)
- return ret;
-
- drm_crtc_helper_add(crtc, &zynqmp_disp_crtc_helper_funcs);
-
- /* Start with vertical blanking interrupt reporting disabled. */
- drm_crtc_vblank_off(crtc);
-
- return 0;
-}
-
-static void zynqmp_disp_map_crtc_to_plane(struct zynqmp_disp *disp)
-{
- u32 possible_crtcs = drm_crtc_mask(&disp->dpsub->crtc);
- unsigned int i;
-
- for (i = 0; i < ARRAY_SIZE(disp->layers); i++)
- disp->dpsub->planes[i].possible_crtcs = possible_crtcs;
-}
-
/* -----------------------------------------------------------------------------
* Initialization & Cleanup
*/
int zynqmp_disp_drm_init(struct zynqmp_dpsub *dpsub)
{
- struct zynqmp_disp *disp = dpsub->disp;
- int ret;
-
- ret = zynqmp_disp_create_planes(disp);
- if (ret)
- return ret;
-
- ret = zynqmp_disp_create_crtc(disp);
- if (ret < 0)
- return ret;
-
- zynqmp_disp_map_crtc_to_plane(disp);
-
- return 0;
+ return zynqmp_disp_create_planes(dpsub->disp);
}
int zynqmp_disp_probe(struct zynqmp_dpsub *dpsub, struct drm_device *drm)
@@ -1618,7 +1407,7 @@ int zynqmp_disp_probe(struct zynqmp_dpsub *dpsub, struct drm_device *drm)
if (ret)
return ret;
- layer = &disp->layers[ZYNQMP_DISP_LAYER_VID];
+ layer = &disp->layers[ZYNQMP_DPSUB_LAYER_VID];
dpsub->dma_align = 1 << layer->dmas[0].chan->device->copy_align;
return 0;
diff --git a/drivers/gpu/drm/xlnx/zynqmp_disp.h b/drivers/gpu/drm/xlnx/zynqmp_disp.h
index 1b7f90a81857..57cd540f550f 100644
--- a/drivers/gpu/drm/xlnx/zynqmp_disp.h
+++ b/drivers/gpu/drm/xlnx/zynqmp_disp.h
@@ -25,13 +25,30 @@
#define ZYNQMP_DISP_MAX_DMA_BIT 44
struct device;
+struct drm_atomic_state;
struct drm_device;
+struct drm_plane;
struct platform_device;
struct zynqmp_disp;
struct zynqmp_dpsub;
-void zynqmp_disp_handle_vblank(struct zynqmp_disp *disp);
-uint32_t zynqmp_disp_get_crtc_mask(struct zynqmp_disp *disp);
+/**
+ * enum zynqmp_dpsub_layer_id - Layer identifier
+ * @ZYNQMP_DPSUB_LAYER_VID: Video layer
+ * @ZYNQMP_DPSUB_LAYER_GFX: Graphics layer
+ */
+enum zynqmp_dpsub_layer_id {
+ ZYNQMP_DPSUB_LAYER_VID,
+ ZYNQMP_DPSUB_LAYER_GFX,
+};
+
+void zynqmp_disp_enable(struct zynqmp_disp *disp);
+void zynqmp_disp_disable(struct zynqmp_disp *disp);
+int zynqmp_disp_setup_clock(struct zynqmp_disp *disp,
+ unsigned long mode_clock);
+
+void zynqmp_disp_plane_atomic_disable(struct drm_plane *plane,
+ struct drm_atomic_state *state);
int zynqmp_disp_drm_init(struct zynqmp_dpsub *dpsub);
int zynqmp_disp_probe(struct zynqmp_dpsub *dpsub, struct drm_device *drm);
diff --git a/drivers/gpu/drm/xlnx/zynqmp_dp.c b/drivers/gpu/drm/xlnx/zynqmp_dp.c
index 3e4d164d40fe..7ad6a5d96c5f 100644
--- a/drivers/gpu/drm/xlnx/zynqmp_dp.c
+++ b/drivers/gpu/drm/xlnx/zynqmp_dp.c
@@ -31,6 +31,7 @@
#include "zynqmp_disp.h"
#include "zynqmp_dp.h"
#include "zynqmp_dpsub.h"
+#include "zynqmp_kms.h"
static uint zynqmp_dp_aux_timeout_ms = 50;
module_param_named(aux_timeout_ms, zynqmp_dp_aux_timeout_ms, uint, 0444);
@@ -1560,7 +1561,7 @@ static irqreturn_t zynqmp_dp_irq_handler(int irq, void *data)
zynqmp_dp_write(dp, ZYNQMP_DP_INT_STATUS, status);
if (status & ZYNQMP_DP_INT_VBLANK_START)
- zynqmp_disp_handle_vblank(dp->dpsub->disp);
+ zynqmp_dpsub_handle_vblank(dp->dpsub);
if (status & ZYNQMP_DP_INT_HPD_EVENT)
schedule_delayed_work(&dp->hpd_work, 0);
diff --git a/drivers/gpu/drm/xlnx/zynqmp_kms.c b/drivers/gpu/drm/xlnx/zynqmp_kms.c
index e4e7f8fd96d2..8162bf18537b 100644
--- a/drivers/gpu/drm/xlnx/zynqmp_kms.c
+++ b/drivers/gpu/drm/xlnx/zynqmp_kms.c
@@ -9,17 +9,199 @@
* - Laurent Pinchart <laurent.pinchart at ideasonboard.com>
*/
+#include <drm/drm_atomic.h>
+#include <drm/drm_atomic_helper.h>
#include <drm/drm_bridge.h>
#include <drm/drm_bridge_connector.h>
#include <drm/drm_connector.h>
+#include <drm/drm_crtc.h>
#include <drm/drm_encoder.h>
+#include <drm/drm_plane.h>
#include <drm/drm_simple_kms_helper.h>
+#include <drm/drm_vblank.h>
+
+#include <linux/clk.h>
+#include <linux/delay.h>
+#include <linux/pm_runtime.h>
+#include <linux/spinlock.h>
#include "zynqmp_disp.h"
#include "zynqmp_dp.h"
#include "zynqmp_dpsub.h"
#include "zynqmp_kms.h"
+/* -----------------------------------------------------------------------------
+ * DRM CRTC
+ */
+
+static inline struct zynqmp_dpsub *crtc_to_dpsub(struct drm_crtc *crtc)
+{
+ return container_of(crtc, struct zynqmp_dpsub, crtc);
+}
+
+static void zynqmp_dpsub_crtc_atomic_enable(struct drm_crtc *crtc,
+ struct drm_atomic_state *state)
+{
+ struct zynqmp_dpsub *dpsub = crtc_to_dpsub(crtc);
+ struct drm_display_mode *adjusted_mode = &crtc->state->adjusted_mode;
+ int ret, vrefresh;
+
+ pm_runtime_get_sync(dpsub->dev);
+
+ zynqmp_disp_setup_clock(dpsub->disp, adjusted_mode->clock * 1000);
+
+ ret = clk_prepare_enable(dpsub->vid_clk);
+ if (ret) {
+ dev_err(dpsub->dev, "failed to enable a pixel clock\n");
+ pm_runtime_put_sync(dpsub->dev);
+ return;
+ }
+
+ zynqmp_disp_enable(dpsub->disp);
+
+ /* Delay of 3 vblank intervals for timing gen to be stable */
+ vrefresh = (adjusted_mode->clock * 1000) /
+ (adjusted_mode->vtotal * adjusted_mode->htotal);
+ msleep(3 * 1000 / vrefresh);
+}
+
+static void zynqmp_dpsub_crtc_atomic_disable(struct drm_crtc *crtc,
+ struct drm_atomic_state *state)
+{
+ struct zynqmp_dpsub *dpsub = crtc_to_dpsub(crtc);
+ struct drm_plane_state *old_plane_state;
+
+ /*
+ * Disable the plane if active. The old plane state can be NULL in the
+ * .shutdown() path if the plane is already disabled, skip
+ * zynqmp_disp_plane_atomic_disable() in that case.
+ */
+ old_plane_state = drm_atomic_get_old_plane_state(state, crtc->primary);
+ if (old_plane_state)
+ zynqmp_disp_plane_atomic_disable(crtc->primary, state);
+
+ zynqmp_disp_disable(dpsub->disp);
+
+ drm_crtc_vblank_off(crtc);
+
+ spin_lock_irq(&crtc->dev->event_lock);
+ if (crtc->state->event) {
+ drm_crtc_send_vblank_event(crtc, crtc->state->event);
+ crtc->state->event = NULL;
+ }
+ spin_unlock_irq(&crtc->dev->event_lock);
+
+ clk_disable_unprepare(dpsub->vid_clk);
+ pm_runtime_put_sync(dpsub->dev);
+}
+
+static int zynqmp_dpsub_crtc_atomic_check(struct drm_crtc *crtc,
+ struct drm_atomic_state *state)
+{
+ return drm_atomic_add_affected_planes(state, crtc);
+}
+
+static void zynqmp_dpsub_crtc_atomic_begin(struct drm_crtc *crtc,
+ struct drm_atomic_state *state)
+{
+ drm_crtc_vblank_on(crtc);
+}
+
+static void zynqmp_dpsub_crtc_atomic_flush(struct drm_crtc *crtc,
+ struct drm_atomic_state *state)
+{
+ if (crtc->state->event) {
+ struct drm_pending_vblank_event *event;
+
+ /* Consume the flip_done event from atomic helper. */
+ event = crtc->state->event;
+ crtc->state->event = NULL;
+
+ event->pipe = drm_crtc_index(crtc);
+
+ WARN_ON(drm_crtc_vblank_get(crtc) != 0);
+
+ spin_lock_irq(&crtc->dev->event_lock);
+ drm_crtc_arm_vblank_event(crtc, event);
+ spin_unlock_irq(&crtc->dev->event_lock);
+ }
+}
+
+static const struct drm_crtc_helper_funcs zynqmp_dpsub_crtc_helper_funcs = {
+ .atomic_enable = zynqmp_dpsub_crtc_atomic_enable,
+ .atomic_disable = zynqmp_dpsub_crtc_atomic_disable,
+ .atomic_check = zynqmp_dpsub_crtc_atomic_check,
+ .atomic_begin = zynqmp_dpsub_crtc_atomic_begin,
+ .atomic_flush = zynqmp_dpsub_crtc_atomic_flush,
+};
+
+static int zynqmp_dpsub_crtc_enable_vblank(struct drm_crtc *crtc)
+{
+ struct zynqmp_dpsub *dpsub = crtc_to_dpsub(crtc);
+
+ zynqmp_dp_enable_vblank(dpsub->dp);
+
+ return 0;
+}
+
+static void zynqmp_dpsub_crtc_disable_vblank(struct drm_crtc *crtc)
+{
+ struct zynqmp_dpsub *dpsub = crtc_to_dpsub(crtc);
+
+ zynqmp_dp_disable_vblank(dpsub->dp);
+}
+
+static const struct drm_crtc_funcs zynqmp_dpsub_crtc_funcs = {
+ .destroy = drm_crtc_cleanup,
+ .set_config = drm_atomic_helper_set_config,
+ .page_flip = drm_atomic_helper_page_flip,
+ .reset = drm_atomic_helper_crtc_reset,
+ .atomic_duplicate_state = drm_atomic_helper_crtc_duplicate_state,
+ .atomic_destroy_state = drm_atomic_helper_crtc_destroy_state,
+ .enable_vblank = zynqmp_dpsub_crtc_enable_vblank,
+ .disable_vblank = zynqmp_dpsub_crtc_disable_vblank,
+};
+
+static int zynqmp_dpsub_create_crtc(struct zynqmp_dpsub *dpsub)
+{
+ struct drm_plane *plane = &dpsub->planes[ZYNQMP_DPSUB_LAYER_GFX];
+ struct drm_crtc *crtc = &dpsub->crtc;
+ int ret;
+
+ ret = drm_crtc_init_with_planes(&dpsub->drm, crtc, plane,
+ NULL, &zynqmp_dpsub_crtc_funcs, NULL);
+ if (ret < 0)
+ return ret;
+
+ drm_crtc_helper_add(crtc, &zynqmp_dpsub_crtc_helper_funcs);
+
+ /* Start with vertical blanking interrupt reporting disabled. */
+ drm_crtc_vblank_off(crtc);
+
+ return 0;
+}
+
+static void zynqmp_dpsub_map_crtc_to_plane(struct zynqmp_dpsub *dpsub)
+{
+ u32 possible_crtcs = drm_crtc_mask(&dpsub->crtc);
+ unsigned int i;
+
+ for (i = 0; i < ARRAY_SIZE(dpsub->planes); i++)
+ dpsub->planes[i].possible_crtcs = possible_crtcs;
+}
+
+/**
+ * zynqmp_dpsub_handle_vblank - Handle the vblank event
+ * @dpsub: DisplayPort subsystem
+ *
+ * This function handles the vblank interrupt, and sends an event to
+ * CRTC object. This will be called by the DP vblank interrupt handler.
+ */
+void zynqmp_dpsub_handle_vblank(struct zynqmp_dpsub *dpsub)
+{
+ drm_crtc_handle_vblank(&dpsub->crtc);
+}
+
/* -----------------------------------------------------------------------------
* Initialization
*/
@@ -38,12 +220,18 @@ int zynqmp_dpsub_kms_init(struct zynqmp_dpsub *dpsub)
if (ret)
return ret;
+ ret = zynqmp_dpsub_create_crtc(dpsub);
+ if (ret < 0)
+ return ret;
+
+ zynqmp_dpsub_map_crtc_to_plane(dpsub);
+
ret = zynqmp_dp_drm_init(dpsub);
if (ret)
return ret;
/* Create the encoder and attach the bridge. */
- encoder->possible_crtcs |= zynqmp_disp_get_crtc_mask(dpsub->disp);
+ encoder->possible_crtcs |= drm_crtc_mask(&dpsub->crtc);
drm_simple_encoder_init(&dpsub->drm, encoder, DRM_MODE_ENCODER_NONE);
ret = drm_bridge_attach(encoder, dpsub->bridge, NULL,
diff --git a/drivers/gpu/drm/xlnx/zynqmp_kms.h b/drivers/gpu/drm/xlnx/zynqmp_kms.h
index a6729d9d82cc..a8934b1abb05 100644
--- a/drivers/gpu/drm/xlnx/zynqmp_kms.h
+++ b/drivers/gpu/drm/xlnx/zynqmp_kms.h
@@ -14,6 +14,8 @@
struct zynqmp_dpsub;
+void zynqmp_dpsub_handle_vblank(struct zynqmp_dpsub *dpsub);
+
int zynqmp_dpsub_kms_init(struct zynqmp_dpsub *dpsub);
#endif /* _ZYNQMP_KMS_H_ */
--
Regards,
Laurent Pinchart
More information about the dri-devel
mailing list