[PATCH v3 3/3] drm: rcar-du: Add VSP1 live source support
Sergei Shtylyov
sergei.shtylyov at cogentembedded.com
Wed Jan 25 21:38:26 UTC 2017
From: Laurent Pinchart <laurent.pinchart+renesas at ideasonboard.com>
Register live sources for VSPD0 and VSPD1 and configure the plane source
at plane setup time to source frames from memory or from the VSP1.
[Sergei: ported to the modern kernel.]
Signed-off-by: Laurent Pinchart <laurent.pinchart+renesas at ideasonboard.com>
Signed-off-by: Sergei Shtylyov <sergei.shtylyov at cogentembedded.com>
---
Changes in version 3:
- ported the patch to the modern kernel;
- reformatted rcar_du_live_fb_create_handle()/rcar_du_live_fb_create()'s
parameter lists;
- added my signoff.
drivers/gpu/drm/rcar-du/rcar_du_drv.c | 6 +-
drivers/gpu/drm/rcar-du/rcar_du_kms.c | 77 +++++++++++++++++++++++++++++++
drivers/gpu/drm/rcar-du/rcar_du_kms.h | 3 +
drivers/gpu/drm/rcar-du/rcar_du_plane.c | 79 +++++++++++++++++++++++++++++++-
drivers/gpu/drm/rcar-du/rcar_du_plane.h | 3 +
5 files changed, 164 insertions(+), 4 deletions(-)
Index: linux/drivers/gpu/drm/rcar-du/rcar_du_drv.c
===================================================================
--- linux.orig/drivers/gpu/drm/rcar-du/rcar_du_drv.c
+++ linux/drivers/gpu/drm/rcar-du/rcar_du_drv.c
@@ -60,7 +60,8 @@ static const struct rcar_du_device_info
static const struct rcar_du_device_info rcar_du_r8a7790_info = {
.gen = 2,
.features = RCAR_DU_FEATURE_CRTC_IRQ_CLOCK
- | RCAR_DU_FEATURE_EXT_CTRL_REGS,
+ | RCAR_DU_FEATURE_EXT_CTRL_REGS
+ | RCAR_DU_FEATURE_VSP1_SOURCE,
.quirks = RCAR_DU_QUIRK_ALIGN_128B | RCAR_DU_QUIRK_LVDS_LANES,
.num_crtcs = 3,
.routes = {
@@ -90,7 +91,8 @@ static const struct rcar_du_device_info
static const struct rcar_du_device_info rcar_du_r8a7791_info = {
.gen = 2,
.features = RCAR_DU_FEATURE_CRTC_IRQ_CLOCK
- | RCAR_DU_FEATURE_EXT_CTRL_REGS,
+ | RCAR_DU_FEATURE_EXT_CTRL_REGS
+ | RCAR_DU_FEATURE_VSP1_SOURCE,
.num_crtcs = 2,
.routes = {
/* R8A779[13] has one RGB output, one LVDS output and one
Index: linux/drivers/gpu/drm/rcar-du/rcar_du_kms.c
===================================================================
--- linux.orig/drivers/gpu/drm/rcar-du/rcar_du_kms.c
+++ linux/drivers/gpu/drm/rcar-du/rcar_du_kms.c
@@ -166,6 +166,74 @@ int rcar_du_dumb_create(struct drm_file
return drm_gem_cma_dumb_create_internal(file, dev, args);
}
+struct rcar_du_live_framebuffer {
+ struct drm_framebuffer fb;
+ struct drm_live_source *src;
+};
+
+#define to_live_fb(fb) container_of(fb, struct rcar_du_live_framebuffer, fb)
+
+struct drm_live_source *rcar_du_live_fb_source(struct drm_framebuffer *fb)
+{
+ return fb->flags & DRM_MODE_FB_LIVE_SOURCE ? to_live_fb(fb)->src : NULL;
+}
+
+static void rcar_du_live_fb_destroy(struct drm_framebuffer *fb)
+{
+ struct rcar_du_live_framebuffer *live_fb = to_live_fb(fb);
+
+ drm_framebuffer_cleanup(fb);
+ kfree(live_fb);
+}
+
+static int rcar_du_live_fb_create_handle(struct drm_framebuffer *fb,
+ struct drm_file *file_priv,
+ unsigned int *handle)
+{
+ *handle = 0;
+ return 0;
+}
+
+static struct drm_framebuffer_funcs rcar_du_live_fb_funcs = {
+ .destroy = rcar_du_live_fb_destroy,
+ .create_handle = rcar_du_live_fb_create_handle,
+};
+
+static struct drm_framebuffer *
+rcar_du_live_fb_create(struct drm_device *dev, struct drm_file *file_priv,
+ const struct drm_mode_fb_cmd2 *mode_cmd)
+{
+ struct rcar_du_live_framebuffer *fb;
+ struct drm_mode_object *obj;
+ struct drm_live_source *src;
+ int ret;
+
+ obj = drm_mode_object_find(dev, mode_cmd->handles[0],
+ DRM_MODE_OBJECT_LIVE_SOURCE);
+ if (!obj)
+ return ERR_PTR(-EINVAL);
+
+ src = obj_to_live_source(obj);
+
+ fb = kzalloc(sizeof(*fb), GFP_KERNEL);
+ if (!fb)
+ return ERR_PTR(-ENOMEM);
+
+ drm_helper_mode_fill_fb_struct(dev, &fb->fb, mode_cmd);
+
+ fb->src = src;
+
+ ret = drm_framebuffer_init(dev, &fb->fb, &rcar_du_live_fb_funcs);
+ if (ret) {
+ dev_err(dev->dev, "Failed to initialize framebuffer: %d\n",
+ ret);
+ kfree(fb);
+ return ERR_PTR(ret);
+ }
+
+ return &fb->fb;
+}
+
static struct drm_framebuffer *
rcar_du_fb_create(struct drm_device *dev, struct drm_file *file_priv,
const struct drm_mode_fb_cmd2 *mode_cmd)
@@ -177,6 +245,9 @@ rcar_du_fb_create(struct drm_device *dev
unsigned int bpp;
unsigned int i;
+ if (mode_cmd->flags & DRM_MODE_FB_LIVE_SOURCE)
+ return rcar_du_live_fb_create(dev, file_priv, mode_cmd);
+
format = rcar_du_format_info(mode_cmd->pixel_format);
if (format == NULL) {
dev_dbg(dev->dev, "unsupported pixel format %08x\n",
@@ -659,6 +730,12 @@ int rcar_du_modeset_init(struct rcar_du_
drm_mode_config_reset(dev);
+ if (rcar_du_has(rcdu, RCAR_DU_FEATURE_VSP1_SOURCE)) {
+ ret = rcar_du_vsp1_sources_init(rcdu);
+ if (ret < 0)
+ return ret;
+ }
+
drm_kms_helper_poll_init(dev);
if (dev->mode_config.num_connector) {
Index: linux/drivers/gpu/drm/rcar-du/rcar_du_kms.h
===================================================================
--- linux.orig/drivers/gpu/drm/rcar-du/rcar_du_kms.h
+++ linux/drivers/gpu/drm/rcar-du/rcar_du_kms.h
@@ -18,6 +18,7 @@
struct drm_file;
struct drm_device;
+struct drm_live_source;
struct drm_mode_create_dumb;
struct rcar_du_device;
@@ -36,4 +37,6 @@ int rcar_du_modeset_init(struct rcar_du_
int rcar_du_dumb_create(struct drm_file *file, struct drm_device *dev,
struct drm_mode_create_dumb *args);
+struct drm_live_source *rcar_du_live_fb_source(struct drm_framebuffer *fb);
+
#endif /* __RCAR_DU_KMS_H__ */
Index: linux/drivers/gpu/drm/rcar-du/rcar_du_plane.c
===================================================================
--- linux.orig/drivers/gpu/drm/rcar-du/rcar_du_plane.c
+++ linux/drivers/gpu/drm/rcar-du/rcar_du_plane.c
@@ -27,6 +27,71 @@
#include "rcar_du_regs.h"
/* -----------------------------------------------------------------------------
+ * Live Sources
+ */
+
+struct rcar_du_vsp1_source {
+ struct drm_live_source base;
+
+ enum rcar_du_plane_source source;
+};
+
+static inline struct rcar_du_vsp1_source *
+to_rcar_vsp1_source(struct drm_live_source *src)
+{
+ return container_of(src, struct rcar_du_vsp1_source, base);
+}
+
+static const struct drm_live_source_funcs rcar_du_live_source_funcs = {
+ .destroy = drm_live_source_cleanup,
+};
+
+static const uint32_t source_formats[] = {
+ DRM_FORMAT_XRGB8888,
+};
+
+int rcar_du_vsp1_sources_init(struct rcar_du_device *rcdu)
+{
+ static const struct {
+ enum rcar_du_plane_source source;
+ unsigned int planes;
+ } sources[] = {
+ { RCAR_DU_PLANE_VSPD0, BIT(RCAR_DU_NUM_KMS_PLANES - 1) },
+ { RCAR_DU_PLANE_VSPD1, BIT(RCAR_DU_NUM_KMS_PLANES - 2) |
+ BIT(2 * RCAR_DU_NUM_KMS_PLANES - 1) },
+ };
+ unsigned int planes_mask;
+ unsigned int num_planes;
+ unsigned int i;
+
+ num_planes = RCAR_DU_NUM_KMS_PLANES * DIV_ROUND_UP(rcdu->num_crtcs, 2);
+ planes_mask = (1 << num_planes) - 1;
+
+ for (i = 0; i < ARRAY_SIZE(sources); ++i) {
+ struct rcar_du_vsp1_source *src;
+ char name[6];
+ int ret;
+
+ src = devm_kzalloc(rcdu->dev, sizeof(*src), GFP_KERNEL);
+ if (src == NULL)
+ return -ENOMEM;
+
+ src->source = sources[i].source;
+
+ sprintf(name, "vspd%u", i);
+ ret = drm_live_source_init(rcdu->ddev, &src->base, name,
+ sources[i].planes & planes_mask,
+ source_formats,
+ ARRAY_SIZE(source_formats),
+ &rcar_du_live_source_funcs);
+ if (ret < 0)
+ return ret;
+ }
+
+ return 0;
+}
+
+/* -----------------------------------------------------------------------------
* Atomic hardware plane allocator
*
* The hardware plane allocator is solely based on the atomic plane states
@@ -555,6 +620,7 @@ static int rcar_du_plane_atomic_check(st
struct rcar_du_plane_state *rstate = to_rcar_plane_state(state);
struct rcar_du_plane *rplane = to_rcar_plane(plane);
struct rcar_du_device *rcdu = rplane->group->dev;
+ uint32_t pixel_format;
if (!state->fb || !state->crtc) {
rstate->format = NULL;
@@ -567,13 +633,22 @@ static int rcar_du_plane_atomic_check(st
return -EINVAL;
}
- rstate->format = rcar_du_format_info(state->fb->format->format);
+ pixel_format = state->fb->format->format;
+ rstate->format = rcar_du_format_info(pixel_format);
if (rstate->format == NULL) {
dev_dbg(rcdu->dev, "%s: unsupported format %08x\n", __func__,
- state->fb->format->format);
+ pixel_format);
return -EINVAL;
}
+ if (state->fb->flags & DRM_MODE_FB_LIVE_SOURCE) {
+ struct drm_live_source *src = rcar_du_live_fb_source(state->fb);
+
+ rstate->source = to_rcar_vsp1_source(src)->source;
+ } else {
+ rstate->source = RCAR_DU_PLANE_MEMORY;
+ }
+
return 0;
}
Index: linux/drivers/gpu/drm/rcar-du/rcar_du_plane.h
===================================================================
--- linux.orig/drivers/gpu/drm/rcar-du/rcar_du_plane.h
+++ linux/drivers/gpu/drm/rcar-du/rcar_du_plane.h
@@ -17,6 +17,7 @@
#include <drm/drmP.h>
#include <drm/drm_crtc.h>
+struct rcar_du_device;
struct rcar_du_format_info;
struct rcar_du_group;
@@ -72,6 +73,8 @@ to_rcar_plane_state(struct drm_plane_sta
int rcar_du_atomic_check_planes(struct drm_device *dev,
struct drm_atomic_state *state);
+int rcar_du_vsp1_sources_init(struct rcar_du_device *rcdu);
+
int rcar_du_planes_init(struct rcar_du_group *rgrp);
void __rcar_du_plane_setup(struct rcar_du_group *rgrp,
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