[PATCH v2 3/8] drm/rockchip: Convert to support atomic API

From: Mark Yao
Date: Mon Dec 14 2015 - 03:33:53 EST

Rockchip vop not support hw vblank counter, needed check the committed
register if it's really take effect.

Signed-off-by: Mark Yao <mark.yao@xxxxxxxxxxxxxx>
Signed-off-by: Tomasz Figa <tfiga@xxxxxxxxxxxx>
---
Changes in v2:
- Optimization commit planes sequence.
- Get vblank count on atomic_begin to protect vblank event.
Adviced by Daniel Stone
- Direct return -EINVAL when yuv address is not support, instead of adjust it.
- code formating and cleanup.
Adviced by Thierry Reding & Daniel Vetter
- Hook mode_set into crtc enable instead of hack crtc enable on mode set.

drivers/gpu/drm/rockchip/rockchip_drm_drv.c | 5 +-
drivers/gpu/drm/rockchip/rockchip_drm_drv.h | 2 +
drivers/gpu/drm/rockchip/rockchip_drm_fb.c | 80 ++++
drivers/gpu/drm/rockchip/rockchip_drm_vop.c | 647 +++++++++++----------------
4 files changed, 343 insertions(+), 391 deletions(-)

diff --git a/drivers/gpu/drm/rockchip/rockchip_drm_drv.c b/drivers/gpu/drm/rockchip/rockchip_drm_drv.c
index cfd9b83..ab3e0f6 100644
--- a/drivers/gpu/drm/rockchip/rockchip_drm_drv.c
+++ b/drivers/gpu/drm/rockchip/rockchip_drm_drv.c
@@ -213,6 +213,8 @@ static int rockchip_drm_load(struct drm_device *drm_dev, unsigned long flags)
*/
drm_dev->vblank_disable_allowed = true;

+ drm_mode_config_reset(drm_dev);
+
ret = rockchip_drm_fbdev_init(drm_dev);
if (ret)
goto err_vblank_cleanup;
@@ -276,7 +278,8 @@ const struct vm_operations_struct rockchip_drm_vm_ops = {
};

static struct drm_driver rockchip_drm_driver = {
- .driver_features = DRIVER_MODESET | DRIVER_GEM | DRIVER_PRIME,
+ .driver_features = DRIVER_MODESET | DRIVER_GEM |
+ DRIVER_PRIME | DRIVER_ATOMIC,
.load = rockchip_drm_load,
.unload = rockchip_drm_unload,
.lastclose = rockchip_drm_lastclose,
diff --git a/drivers/gpu/drm/rockchip/rockchip_drm_drv.h b/drivers/gpu/drm/rockchip/rockchip_drm_drv.h
index 069d6d4..513ff98 100644
--- a/drivers/gpu/drm/rockchip/rockchip_drm_drv.h
+++ b/drivers/gpu/drm/rockchip/rockchip_drm_drv.h
@@ -18,6 +18,7 @@
#define _ROCKCHIP_DRM_DRV_H

#include <drm/drm_fb_helper.h>
+#include <drm/drm_atomic_helper.h>
#include <drm/drm_gem.h>

#include <linux/module.h>
@@ -63,5 +64,6 @@ int rockchip_drm_dma_attach_device(struct drm_device *drm_dev,
struct device *dev);
void rockchip_drm_dma_detach_device(struct drm_device *drm_dev,
struct device *dev);
+void rockchip_crtc_wait_for_update(struct drm_crtc *crtc);

#endif /* _ROCKCHIP_DRM_DRV_H_ */
diff --git a/drivers/gpu/drm/rockchip/rockchip_drm_fb.c b/drivers/gpu/drm/rockchip/rockchip_drm_fb.c
index b8ac591..9aca778 100644
--- a/drivers/gpu/drm/rockchip/rockchip_drm_fb.c
+++ b/drivers/gpu/drm/rockchip/rockchip_drm_fb.c
@@ -15,6 +15,7 @@
#include <linux/kernel.h>
#include <drm/drm.h>
#include <drm/drmP.h>
+#include <drm/drm_atomic.h>
#include <drm/drm_fb_helper.h>
#include <drm/drm_crtc_helper.h>

@@ -166,9 +167,88 @@ static void rockchip_drm_output_poll_changed(struct drm_device *dev)
drm_fb_helper_hotplug_event(fb_helper);
}

+static void rockchip_atomic_wait_for_complete(struct drm_atomic_state *state)
+{
+ struct drm_crtc_state *crtc_state;
+ struct drm_crtc *crtc;
+ int i;
+
+ for_each_crtc_in_state(state, crtc, crtc_state, i) {
+ if (!crtc->state->active)
+ continue;
+
+ WARN_ON(drm_crtc_vblank_get(crtc));
+ }
+
+ for_each_crtc_in_state(state, crtc, crtc_state, i) {
+ if (!crtc->state->active)
+ continue;
+
+ rockchip_crtc_wait_for_update(crtc);
+ }
+
+ for_each_crtc_in_state(state, crtc, crtc_state, i) {
+ if (!crtc->state->active)
+ continue;
+
+ drm_crtc_vblank_put(crtc);
+ }
+}
+
+int rockchip_drm_atomic_commit(struct drm_device *dev,
+ struct drm_atomic_state *state,
+ bool async)
+{
+ int ret;
+
+ if (async)
+ return -EBUSY;
+
+ ret = drm_atomic_helper_prepare_planes(dev, state);
+ if (ret)
+ return ret;
+
+ drm_atomic_helper_swap_state(dev, state);
+
+ /*
+ * TODO: do fence wait here.
+ */
+
+ /*
+ * Rockchip crtc support runtime PM, can't update display planes
+ * when crtc is disabled.
+ *
+ * drm_atomic_helper_commit comments detail that:
+ * For drivers supporting runtime PM the recommended sequence is
+ *
+ * drm_atomic_helper_commit_modeset_disables(dev, state);
+ *
+ * drm_atomic_helper_commit_modeset_enables(dev, state);
+ *
+ * drm_atomic_helper_commit_planes(dev, state, true);
+ *
+ * See the kerneldoc entries for these three functions for more details.
+ */
+ drm_atomic_helper_commit_modeset_disables(dev, state);
+
+ drm_atomic_helper_commit_modeset_enables(dev, state);
+
+ drm_atomic_helper_commit_planes(dev, state, true);
+
+ rockchip_atomic_wait_for_complete(state);
+
+ drm_atomic_helper_cleanup_planes(dev, state);
+
+ drm_atomic_state_free(state);
+
+ return 0;
+}
+
static const struct drm_mode_config_funcs rockchip_drm_mode_config_funcs = {
.fb_create = rockchip_user_fb_create,
.output_poll_changed = rockchip_drm_output_poll_changed,
+ .atomic_check = drm_atomic_helper_check,
+ .atomic_commit = rockchip_drm_atomic_commit,
};

struct drm_framebuffer *
diff --git a/drivers/gpu/drm/rockchip/rockchip_drm_vop.c b/drivers/gpu/drm/rockchip/rockchip_drm_vop.c
index bd5d349..58d7cc4 100644
--- a/drivers/gpu/drm/rockchip/rockchip_drm_vop.c
+++ b/drivers/gpu/drm/rockchip/rockchip_drm_vop.c
@@ -14,6 +14,7 @@

#include <drm/drm.h>
#include <drm/drmP.h>
+#include <drm/drm_atomic.h>
#include <drm/drm_crtc.h>
#include <drm/drm_crtc_helper.h>
#include <drm/drm_plane_helper.h>
@@ -63,12 +64,15 @@

#define to_vop(x) container_of(x, struct vop, crtc)
#define to_vop_win(x) container_of(x, struct vop_win, base)
+#define to_vop_plane_state(x) container_of(x, struct vop_plane_state, base)

-struct vop_win_state {
- struct list_head head;
- struct drm_framebuffer *fb;
+struct vop_plane_state {
+ struct drm_plane_state base;
+ int format;
+ struct drm_rect src;
+ struct drm_rect dest;
dma_addr_t yrgb_mst;
- struct drm_pending_vblank_event *event;
+ bool enable;
};

struct vop_win {
@@ -76,8 +80,7 @@ struct vop_win {
const struct vop_win_data *data;
struct vop *vop;

- struct list_head pending;
- struct vop_win_state *active;
+ struct vop_plane_state state;
};

struct vop {
@@ -93,6 +96,8 @@ struct vop {
struct mutex vsync_mutex;
bool vsync_work_pending;
struct completion dsp_hold_completion;
+ struct completion wait_update_complete;
+ struct drm_pending_vblank_event *event;

const struct vop_data *data;

@@ -632,7 +637,7 @@ static void vop_dsp_hold_valid_irq_disable(struct vop *vop)
spin_unlock_irqrestore(&vop->irq_lock, flags);
}

-static void vop_crtc_enable(struct drm_crtc *crtc)
+static void vop_enable(struct drm_crtc *crtc)
{
struct vop *vop = to_vop(crtc);
int ret;
@@ -746,224 +751,188 @@ static void vop_crtc_disable(struct drm_crtc *crtc)
pm_runtime_put(vop->dev);
}

-/*
- * Caller must hold vsync_mutex.
- */
-static struct drm_framebuffer *vop_win_last_pending_fb(struct vop_win *vop_win)
-{
- struct vop_win_state *last;
- struct vop_win_state *active = vop_win->active;
-
- if (list_empty(&vop_win->pending))
- return active ? active->fb : NULL;
-
- last = list_last_entry(&vop_win->pending, struct vop_win_state, head);
- return last ? last->fb : NULL;
-}
-
-/*
- * Caller must hold vsync_mutex.
- */
-static int vop_win_queue_fb(struct vop_win *vop_win,
- struct drm_framebuffer *fb, dma_addr_t yrgb_mst,
- struct drm_pending_vblank_event *event)
+static void vop_plane_destroy(struct drm_plane *plane)
{
- struct vop_win_state *state;
-
- state = kzalloc(sizeof(*state), GFP_KERNEL);
- if (!state)
- return -ENOMEM;
-
- state->fb = fb;
- state->yrgb_mst = yrgb_mst;
- state->event = event;
-
- list_add_tail(&state->head, &vop_win->pending);
-
- return 0;
+ drm_plane_cleanup(plane);
}

-static int vop_update_plane_event(struct drm_plane *plane,
- struct drm_crtc *crtc,
- struct drm_framebuffer *fb, int crtc_x,
- int crtc_y, unsigned int crtc_w,
- unsigned int crtc_h, uint32_t src_x,
- uint32_t src_y, uint32_t src_w,
- uint32_t src_h,
- struct drm_pending_vblank_event *event)
+static int vop_plane_atomic_check(struct drm_plane *plane,
+ struct drm_plane_state *state)
{
+ struct drm_crtc *crtc = state->crtc;
+ struct drm_framebuffer *fb = state->fb;
struct vop_win *vop_win = to_vop_win(plane);
+ struct vop_plane_state *vop_plane_state = to_vop_plane_state(state);
const struct vop_win_data *win = vop_win->data;
- struct vop *vop = to_vop(crtc);
- struct drm_gem_object *obj;
- struct rockchip_gem_object *rk_obj;
- struct drm_gem_object *uv_obj;
- struct rockchip_gem_object *rk_uv_obj;
- unsigned long offset;
- unsigned int actual_w;
- unsigned int actual_h;
- unsigned int dsp_stx;
- unsigned int dsp_sty;
- unsigned int y_vir_stride;
- unsigned int uv_vir_stride = 0;
- dma_addr_t yrgb_mst;
- dma_addr_t uv_mst = 0;
- enum vop_data_format format;
- uint32_t val;
- bool is_alpha;
- bool rb_swap;
- bool is_yuv;
bool visible;
int ret;
- struct drm_rect dest = {
- .x1 = crtc_x,
- .y1 = crtc_y,
- .x2 = crtc_x + crtc_w,
- .y2 = crtc_y + crtc_h,
- };
- struct drm_rect src = {
- /* 16.16 fixed point */
- .x1 = src_x,
- .y1 = src_y,
- .x2 = src_x + src_w,
- .y2 = src_y + src_h,
- };
- const struct drm_rect clip = {
- .x2 = crtc->mode.hdisplay,
- .y2 = crtc->mode.vdisplay,
- };
- bool can_position = plane->type != DRM_PLANE_TYPE_PRIMARY;
+ struct drm_rect *dest = &vop_plane_state->dest;
+ struct drm_rect *src = &vop_plane_state->src;
+ struct drm_rect clip;
int min_scale = win->phy->scl ? FRAC_16_16(1, 8) :
DRM_PLANE_HELPER_NO_SCALING;
int max_scale = win->phy->scl ? FRAC_16_16(8, 1) :
DRM_PLANE_HELPER_NO_SCALING;

- ret = drm_plane_helper_check_update(plane, crtc, fb,
- &src, &dest, &clip,
+ crtc = crtc ? crtc : plane->state->crtc;
+ /*
+ * Both crtc or plane->state->crtc can be null.
+ */
+ if (!crtc || !fb)
+ goto out_disable;
+ src->x1 = state->src_x;
+ src->y1 = state->src_y;
+ src->x2 = state->src_x + state->src_w;
+ src->y2 = state->src_y + state->src_h;
+ dest->x1 = state->crtc_x;
+ dest->y1 = state->crtc_y;
+ dest->x2 = state->crtc_x + state->crtc_w;
+ dest->y2 = state->crtc_y + state->crtc_h;
+
+ clip.x1 = 0;
+ clip.y1 = 0;
+ clip.x2 = crtc->mode.hdisplay;
+ clip.y2 = crtc->mode.vdisplay;
+
+ ret = drm_plane_helper_check_update(plane, crtc, state->fb,
+ src, dest, &clip,
min_scale,
max_scale,
- can_position, false, &visible);
+ true, true, &visible);
if (ret)
return ret;

if (!visible)
- return 0;
+ goto out_disable;

- is_alpha = is_alpha_support(fb->pixel_format);
- rb_swap = has_rb_swapped(fb->pixel_format);
- is_yuv = is_yuv_support(fb->pixel_format);
-
- format = vop_convert_format(fb->pixel_format);
- if (format < 0)
- return format;
+ vop_plane_state->format = vop_convert_format(fb->pixel_format);
+ if (vop_plane_state->format < 0)
+ return vop_plane_state->format;

- obj = rockchip_fb_get_gem_obj(fb, 0);
- if (!obj) {
- DRM_ERROR("fail to get rockchip gem object from framebuffer\n");
+ /*
+ * Src.x1 can be odd when do clip, but yuv plane start point
+ * need align with 2 pixel.
+ */
+ if (is_yuv_support(fb->pixel_format) && ((src->x1 >> 16) % 2))
return -EINVAL;
- }

- rk_obj = to_rockchip_obj(obj);
+ vop_plane_state->enable = true;

- if (is_yuv) {
- /*
- * Src.x1 can be odd when do clip, but yuv plane start point
- * need align with 2 pixel.
- */
- val = (src.x1 >> 16) % 2;
- src.x1 += val << 16;
- src.x2 += val << 16;
- }
+ return 0;

- actual_w = (src.x2 - src.x1) >> 16;
- actual_h = (src.y2 - src.y1) >> 16;
+out_disable:
+ vop_plane_state->enable = false;
+ return 0;
+}

- dsp_stx = dest.x1 + crtc->mode.htotal - crtc->mode.hsync_start;
- dsp_sty = dest.y1 + crtc->mode.vtotal - crtc->mode.vsync_start;
+static void vop_plane_atomic_disable(struct drm_plane *plane,
+ struct drm_plane_state *old_state)
+{
+ struct vop_plane_state *vop_plane_state = to_vop_plane_state(old_state);
+ struct vop_win *vop_win = to_vop_win(plane);
+ const struct vop_win_data *win = vop_win->data;
+ struct vop *vop = to_vop(old_state->crtc);

- offset = (src.x1 >> 16) * drm_format_plane_cpp(fb->pixel_format, 0);
- offset += (src.y1 >> 16) * fb->pitches[0];
+ if (!old_state->crtc)
+ return;

- yrgb_mst = rk_obj->dma_addr + offset + fb->offsets[0];
- y_vir_stride = fb->pitches[0] >> 2;
+ spin_lock(&vop->reg_lock);

- if (is_yuv) {
- int hsub = drm_format_horz_chroma_subsampling(fb->pixel_format);
- int vsub = drm_format_vert_chroma_subsampling(fb->pixel_format);
- int bpp = drm_format_plane_cpp(fb->pixel_format, 1);
+ VOP_WIN_SET(vop, win, enable, 0);

- uv_obj = rockchip_fb_get_gem_obj(fb, 1);
- if (!uv_obj) {
- DRM_ERROR("fail to get uv object from framebuffer\n");
- return -EINVAL;
- }
- rk_uv_obj = to_rockchip_obj(uv_obj);
- uv_vir_stride = fb->pitches[1] >> 2;
+ spin_unlock(&vop->reg_lock);

- offset = (src.x1 >> 16) * bpp / hsub;
- offset += (src.y1 >> 16) * fb->pitches[1] / vsub;
+ vop_plane_state->enable = false;
+}

- uv_mst = rk_uv_obj->dma_addr + offset + fb->offsets[1];
- }
+static void vop_plane_atomic_update(struct drm_plane *plane,
+ struct drm_plane_state *old_state)
+{
+ struct drm_plane_state *state = plane->state;
+ struct drm_crtc *crtc = state->crtc;
+ struct vop_win *vop_win = to_vop_win(plane);
+ struct vop_plane_state *vop_plane_state = to_vop_plane_state(state);
+ const struct vop_win_data *win = vop_win->data;
+ struct vop *vop = to_vop(state->crtc);
+ struct drm_framebuffer *fb = state->fb;
+ unsigned int actual_w, actual_h;
+ unsigned int dsp_stx, dsp_sty;
+ uint32_t act_info, dsp_info, dsp_st;
+ struct drm_rect *src = &vop_plane_state->src;
+ struct drm_rect *dest = &vop_plane_state->dest;
+ struct drm_gem_object *obj, *uv_obj;
+ struct rockchip_gem_object *rk_obj, *rk_uv_obj;
+ unsigned long offset;
+ dma_addr_t dma_addr;
+ uint32_t val;
+ bool rb_swap;

/*
- * If this plane update changes the plane's framebuffer, (or more
- * precisely, if this update has a different framebuffer than the last
- * update), enqueue it so we can track when it completes.
- *
- * Only when we discover that this update has completed, can we
- * unreference any previous framebuffers.
+ * can't update plane when vop is disabled.
*/
- mutex_lock(&vop->vsync_mutex);
- if (fb != vop_win_last_pending_fb(vop_win)) {
- ret = drm_crtc_vblank_get(crtc);
- if (ret) {
- DRM_ERROR("failed to get vblank, %d\n", ret);
- mutex_unlock(&vop->vsync_mutex);
- return ret;
- }
-
- drm_framebuffer_reference(fb);
+ if (!crtc)
+ return;

- ret = vop_win_queue_fb(vop_win, fb, yrgb_mst, event);
- if (ret) {
- drm_crtc_vblank_put(crtc);
- mutex_unlock(&vop->vsync_mutex);
- return ret;
- }
+ if (WARN_ON(!vop->is_enabled))
+ return;

- vop->vsync_work_pending = true;
+ if (!vop_plane_state->enable) {
+ vop_plane_atomic_disable(plane, old_state);
+ return;
}
- mutex_unlock(&vop->vsync_mutex);
+
+ obj = rockchip_fb_get_gem_obj(fb, 0);
+ rk_obj = to_rockchip_obj(obj);
+
+ actual_w = drm_rect_width(src) >> 16;
+ actual_h = drm_rect_height(src) >> 16;
+ act_info = (actual_h - 1) << 16 | ((actual_w - 1) & 0xffff);
+
+ dsp_info = (drm_rect_height(dest) - 1) << 16;
+ dsp_info |= (drm_rect_width(dest) - 1) & 0xffff;
+
+ dsp_stx = dest->x1 + crtc->mode.htotal - crtc->mode.hsync_start;
+ dsp_sty = dest->y1 + crtc->mode.vtotal - crtc->mode.vsync_start;
+ dsp_st = dsp_sty << 16 | (dsp_stx & 0xffff);
+
+ offset = (src->x1 >> 16) * drm_format_plane_cpp(fb->pixel_format, 0);
+ offset += (src->y1 >> 16) * fb->pitches[0];
+ vop_plane_state->yrgb_mst = rk_obj->dma_addr + offset + fb->offsets[0];

spin_lock(&vop->reg_lock);

- VOP_WIN_SET(vop, win, format, format);
- VOP_WIN_SET(vop, win, yrgb_vir, y_vir_stride);
- VOP_WIN_SET(vop, win, yrgb_mst, yrgb_mst);
- if (is_yuv) {
- VOP_WIN_SET(vop, win, uv_vir, uv_vir_stride);
- VOP_WIN_SET(vop, win, uv_mst, uv_mst);
+ VOP_WIN_SET(vop, win, format, vop_plane_state->format);
+ VOP_WIN_SET(vop, win, yrgb_vir, fb->pitches[0] >> 2);
+ VOP_WIN_SET(vop, win, yrgb_mst, vop_plane_state->yrgb_mst);
+ if (is_yuv_support(fb->pixel_format)) {
+ int hsub = drm_format_horz_chroma_subsampling(fb->pixel_format);
+ int vsub = drm_format_vert_chroma_subsampling(fb->pixel_format);
+ int bpp = drm_format_plane_cpp(fb->pixel_format, 1);
+
+ uv_obj = rockchip_fb_get_gem_obj(fb, 1);
+ rk_uv_obj = to_rockchip_obj(uv_obj);
+
+ offset = (src->x1 >> 16) * bpp / hsub;
+ offset += (src->y1 >> 16) * fb->pitches[1] / vsub;
+
+ dma_addr = rk_uv_obj->dma_addr + offset + fb->offsets[1];
+ VOP_WIN_SET(vop, win, uv_vir, fb->pitches[1] >> 2);
+ VOP_WIN_SET(vop, win, uv_mst, dma_addr);
}

if (win->phy->scl)
scl_vop_cal_scl_fac(vop, win, actual_w, actual_h,
- dest.x2 - dest.x1, dest.y2 - dest.y1,
+ drm_rect_width(dest), drm_rect_height(dest),
fb->pixel_format);

- val = (actual_h - 1) << 16;
- val |= (actual_w - 1) & 0xffff;
- VOP_WIN_SET(vop, win, act_info, val);
+ VOP_WIN_SET(vop, win, act_info, act_info);
+ VOP_WIN_SET(vop, win, dsp_info, dsp_info);
+ VOP_WIN_SET(vop, win, dsp_st, dsp_st);

- val = (dest.y2 - dest.y1 - 1) << 16;
- val |= (dest.x2 - dest.x1 - 1) & 0xffff;
- VOP_WIN_SET(vop, win, dsp_info, val);
- val = dsp_sty << 16;
- val |= dsp_stx & 0xffff;
- VOP_WIN_SET(vop, win, dsp_st, val);
+ rb_swap = has_rb_swapped(fb->pixel_format);
VOP_WIN_SET(vop, win, rb_swap, rb_swap);

- if (is_alpha) {
+ if (is_alpha_support(fb->pixel_format)) {
VOP_WIN_SET(vop, win, dst_alpha_ctl,
DST_FACTOR_M0(ALPHA_SRC_INVERSE));
val = SRC_ALPHA_EN(1) | SRC_COLOR_M0(ALPHA_SRC_PRE_MUL) |
@@ -977,86 +946,78 @@ static int vop_update_plane_event(struct drm_plane *plane,
}

VOP_WIN_SET(vop, win, enable, 1);
-
- vop_cfg_done(vop);
spin_unlock(&vop->reg_lock);
-
- return 0;
}

-static int vop_update_plane(struct drm_plane *plane, struct drm_crtc *crtc,
- struct drm_framebuffer *fb, int crtc_x, int crtc_y,
- unsigned int crtc_w, unsigned int crtc_h,
- uint32_t src_x, uint32_t src_y, uint32_t src_w,
- uint32_t src_h)
-{
- return vop_update_plane_event(plane, crtc, fb, crtc_x, crtc_y, crtc_w,
- crtc_h, src_x, src_y, src_w, src_h,
- NULL);
-}
+static const struct drm_plane_helper_funcs plane_helper_funcs = {
+ .atomic_check = vop_plane_atomic_check,
+ .atomic_update = vop_plane_atomic_update,
+ .atomic_disable = vop_plane_atomic_disable,
+};

-static int vop_update_primary_plane(struct drm_crtc *crtc,
- struct drm_pending_vblank_event *event)
+void rockchip_crtc_wait_for_update(struct drm_crtc *crtc)
{
- unsigned int crtc_w, crtc_h;
-
- crtc_w = crtc->primary->fb->width - crtc->x;
- crtc_h = crtc->primary->fb->height - crtc->y;
+ struct vop *vop = to_vop(crtc);

- return vop_update_plane_event(crtc->primary, crtc, crtc->primary->fb,
- 0, 0, crtc_w, crtc_h, crtc->x << 16,
- crtc->y << 16, crtc_w << 16,
- crtc_h << 16, event);
+ reinit_completion(&vop->wait_update_complete);
+ WARN_ON(!wait_for_completion_timeout(&vop->wait_update_complete, 100));
}

-static int vop_disable_plane(struct drm_plane *plane)
+void vop_atomic_plane_reset(struct drm_plane *plane)
{
- struct vop_win *vop_win = to_vop_win(plane);
- const struct vop_win_data *win = vop_win->data;
- struct vop *vop;
- int ret;
+ struct vop_plane_state *vop_plane_state =
+ to_vop_plane_state(plane->state);

- if (!plane->crtc)
- return 0;
+ if (plane->state && plane->state->fb)
+ drm_framebuffer_unreference(plane->state->fb);

- vop = to_vop(plane->crtc);
+ kfree(vop_plane_state);
+ vop_plane_state = kzalloc(sizeof(*vop_plane_state), GFP_KERNEL);
+ if (!vop_plane_state)
+ return;

- ret = drm_crtc_vblank_get(plane->crtc);
- if (ret) {
- DRM_ERROR("failed to get vblank, %d\n", ret);
- return ret;
- }
+ plane->state = &vop_plane_state->base;
+ plane->state->plane = plane;
+}

- mutex_lock(&vop->vsync_mutex);
+struct drm_plane_state *
+vop_atomic_plane_duplicate_state(struct drm_plane *plane)
+{
+ struct vop_plane_state *old_vop_plane_state;
+ struct vop_plane_state *vop_plane_state;

- ret = vop_win_queue_fb(vop_win, NULL, 0, NULL);
- if (ret) {
- drm_crtc_vblank_put(plane->crtc);
- mutex_unlock(&vop->vsync_mutex);
- return ret;
- }
+ if (WARN_ON(!plane->state))
+ return NULL;

- vop->vsync_work_pending = true;
- mutex_unlock(&vop->vsync_mutex);
+ old_vop_plane_state = to_vop_plane_state(plane->state);
+ vop_plane_state = kmemdup(old_vop_plane_state,
+ sizeof(*vop_plane_state), GFP_KERNEL);
+ if (!vop_plane_state)
+ return NULL;

- spin_lock(&vop->reg_lock);
- VOP_WIN_SET(vop, win, enable, 0);
- vop_cfg_done(vop);
- spin_unlock(&vop->reg_lock);
+ __drm_atomic_helper_plane_duplicate_state(plane,
+ &vop_plane_state->base);

- return 0;
+ return &vop_plane_state->base;
}

-static void vop_plane_destroy(struct drm_plane *plane)
+static void vop_atomic_plane_destroy_state(struct drm_plane *plane,
+ struct drm_plane_state *state)
{
- vop_disable_plane(plane);
- drm_plane_cleanup(plane);
+ struct vop_plane_state *vop_state = to_vop_plane_state(state);
+
+ __drm_atomic_helper_plane_destroy_state(plane, state);
+
+ kfree(vop_state);
}

static const struct drm_plane_funcs vop_plane_funcs = {
- .update_plane = vop_update_plane,
- .disable_plane = vop_disable_plane,
+ .update_plane = drm_atomic_helper_update_plane,
+ .disable_plane = drm_atomic_helper_disable_plane,
.destroy = vop_plane_destroy,
+ .reset = vop_atomic_plane_reset,
+ .atomic_duplicate_state = vop_atomic_plane_duplicate_state,
+ .atomic_destroy_state = vop_atomic_plane_destroy_state,
};

int rockchip_drm_crtc_mode_config(struct drm_crtc *crtc,
@@ -1077,7 +1038,7 @@ static int vop_crtc_enable_vblank(struct drm_crtc *crtc)
struct vop *vop = to_vop(crtc);
unsigned long flags;

- if (!vop->is_enabled)
+ if (WARN_ON(!vop->is_enabled))
return -EPERM;

spin_lock_irqsave(&vop->irq_lock, flags);
@@ -1094,7 +1055,7 @@ static void vop_crtc_disable_vblank(struct drm_crtc *crtc)
struct vop *vop = to_vop(crtc);
unsigned long flags;

- if (!vop->is_enabled)
+ if (WARN_ON(!vop->is_enabled))
return;

spin_lock_irqsave(&vop->irq_lock, flags);
@@ -1117,29 +1078,10 @@ static bool vop_crtc_mode_fixup(struct drm_crtc *crtc,
return true;
}

-static int vop_crtc_mode_set_base(struct drm_crtc *crtc, int x, int y,
- struct drm_framebuffer *old_fb)
-{
- int ret;
-
- crtc->x = x;
- crtc->y = y;
-
- ret = vop_update_primary_plane(crtc, NULL);
- if (ret < 0) {
- DRM_ERROR("fail to update plane\n");
- return ret;
- }
-
- return 0;
-}
-
-static int vop_crtc_mode_set(struct drm_crtc *crtc,
- struct drm_display_mode *mode,
- struct drm_display_mode *adjusted_mode,
- int x, int y, struct drm_framebuffer *fb)
+static void vop_crtc_enable(struct drm_crtc *crtc)
{
struct vop *vop = to_vop(crtc);
+ struct drm_display_mode *adjusted_mode = &crtc->state->adjusted_mode;
u16 hsync_len = adjusted_mode->hsync_end - adjusted_mode->hsync_start;
u16 hdisplay = adjusted_mode->hdisplay;
u16 htotal = adjusted_mode->htotal;
@@ -1150,9 +1092,9 @@ static int vop_crtc_mode_set(struct drm_crtc *crtc,
u16 vsync_len = adjusted_mode->vsync_end - adjusted_mode->vsync_start;
u16 vact_st = adjusted_mode->vtotal - adjusted_mode->vsync_start;
u16 vact_end = vact_st + vdisplay;
- int ret, ret_clk;
uint32_t val;

+ vop_enable(crtc);
/*
* disable dclk to stop frame scan, so that we can safe config mode and
* enable iommu.
@@ -1172,7 +1114,6 @@ static int vop_crtc_mode_set(struct drm_crtc *crtc,
default:
DRM_ERROR("unsupport connector_type[%d]\n",
vop->connector_type);
- ret = -EINVAL;
goto out;
};
VOP_CTRL_SET(vop, out_mode, vop->connector_out_mode);
@@ -1194,9 +1135,6 @@ static int vop_crtc_mode_set(struct drm_crtc *crtc,
VOP_CTRL_SET(vop, vact_st_end, val);
VOP_CTRL_SET(vop, vpost_st_end, val);

- ret = vop_crtc_mode_set_base(crtc, x, y, fb);
- if (ret)
- goto out;

/*
* reset dclk, take all mode config affect, so the clk would run in
@@ -1208,172 +1146,98 @@ static int vop_crtc_mode_set(struct drm_crtc *crtc,

clk_set_rate(vop->dclk, adjusted_mode->clock * 1000);
out:
- ret_clk = clk_enable(vop->dclk);
- if (ret_clk < 0) {
+ if (clk_enable(vop->dclk) < 0)
dev_err(vop->dev, "failed to enable dclk - %d\n", ret_clk);
- return ret_clk;
- }

- return ret;
}

-static const struct drm_crtc_helper_funcs vop_crtc_helper_funcs = {
- .enable = vop_crtc_enable,
- .disable = vop_crtc_disable,
- .mode_fixup = vop_crtc_mode_fixup,
- .mode_set = vop_crtc_mode_set,
- .mode_set_base = vop_crtc_mode_set_base,
-};
-
-static int vop_crtc_page_flip(struct drm_crtc *crtc,
- struct drm_framebuffer *fb,
- struct drm_pending_vblank_event *event,
- uint32_t page_flip_flags)
+static void vop_crtc_atomic_flush(struct drm_crtc *crtc,
+ struct drm_crtc_state *old_crtc_state)
{
struct vop *vop = to_vop(crtc);
- struct drm_framebuffer *old_fb = crtc->primary->fb;
- int ret;

- /* when the page flip is requested, crtc should be on */
- if (!vop->is_enabled) {
- DRM_DEBUG("page flip request rejected because crtc is off.\n");
- return 0;
- }
+ if (WARN_ON(!vop->is_enabled))
+ return;

- crtc->primary->fb = fb;
+ spin_lock(&vop->reg_lock);

- ret = vop_update_primary_plane(crtc, event);
- if (ret)
- crtc->primary->fb = old_fb;
+ vop_cfg_done(vop);

- return ret;
+ spin_unlock(&vop->reg_lock);
}

-static void vop_win_state_complete(struct vop_win *vop_win,
- struct vop_win_state *state)
+static void vop_crtc_atomic_begin(struct drm_crtc *crtc,
+ struct drm_crtc_state *old_crtc_state)
{
- struct vop *vop = vop_win->vop;
- struct drm_crtc *crtc = &vop->crtc;
- struct drm_device *drm = crtc->dev;
- unsigned long flags;
+ struct vop *vop = to_vop(crtc);

- if (state->event) {
- spin_lock_irqsave(&drm->event_lock, flags);
- drm_crtc_send_vblank_event(crtc, state->event);
- spin_unlock_irqrestore(&drm->event_lock, flags);
- }
+ if (crtc->state->event) {
+ WARN_ON(drm_crtc_vblank_get(crtc) != 0);

- list_del(&state->head);
- drm_crtc_vblank_put(crtc);
+ vop->event = crtc->state->event;
+ crtc->state->event = NULL;
+ }
}

+static const struct drm_crtc_helper_funcs vop_crtc_helper_funcs = {
+ .enable = vop_crtc_enable,
+ .disable = vop_crtc_disable,
+ .mode_fixup = vop_crtc_mode_fixup,
+ .atomic_flush = vop_crtc_atomic_flush,
+ .atomic_begin = vop_crtc_atomic_begin,
+};
+
static void vop_crtc_destroy(struct drm_crtc *crtc)
{
drm_crtc_cleanup(crtc);
}

static const struct drm_crtc_funcs vop_crtc_funcs = {
- .set_config = drm_crtc_helper_set_config,
- .page_flip = vop_crtc_page_flip,
+ .set_config = drm_atomic_helper_set_config,
+ .page_flip = drm_atomic_helper_page_flip,
.destroy = vop_crtc_destroy,
+ .reset = drm_atomic_helper_crtc_reset,
+ .atomic_duplicate_state = drm_atomic_helper_crtc_duplicate_state,
+ .atomic_destroy_state = drm_atomic_helper_crtc_destroy_state,
};

-static bool vop_win_state_is_active(struct vop_win *vop_win,
- struct vop_win_state *state)
+static bool vop_win_pending_is_complete(struct vop_win *vop_win)
{
- bool active = false;
-
- if (state->fb) {
- dma_addr_t yrgb_mst;
-
- /* check yrgb_mst to tell if pending_fb is now front */
- yrgb_mst = VOP_WIN_GET_YRGBADDR(vop_win->vop, vop_win->data);
-
- active = (yrgb_mst == state->yrgb_mst);
- } else {
- bool enabled;
+ struct drm_plane *plane = &vop_win->base;
+ struct vop_plane_state *state = to_vop_plane_state(plane->state);
+ dma_addr_t yrgb_mst;

- /* if enable bit is clear, plane is now disabled */
- enabled = VOP_WIN_GET(vop_win->vop, vop_win->data, enable);
+ if (!state->enable)
+ return VOP_WIN_GET(vop_win->vop, vop_win->data, enable) == 0;

- active = (enabled == 0);
- }
+ yrgb_mst = VOP_WIN_GET_YRGBADDR(vop_win->vop, vop_win->data);

- return active;
+ return yrgb_mst == state->yrgb_mst;
}

-static void vop_win_state_destroy(struct vop_win_state *state)
+static void vop_handle_vblank(struct vop *vop)
{
- struct drm_framebuffer *fb = state->fb;
-
- if (fb)
- drm_framebuffer_unreference(fb);
-
- kfree(state);
-}
-
-static void vop_win_update_state(struct vop_win *vop_win)
-{
- struct vop_win_state *state, *n, *new_active = NULL;
-
- /* Check if any pending states are now active */
- list_for_each_entry(state, &vop_win->pending, head)
- if (vop_win_state_is_active(vop_win, state)) {
- new_active = state;
- break;
- }
-
- if (!new_active)
- return;
+ struct drm_device *drm = vop->drm_dev;
+ struct drm_crtc *crtc = &vop->crtc;
+ unsigned long flags;
+ int i;

- /*
- * Destroy any 'skipped' pending states - states that were queued
- * before the newly active state.
- */
- list_for_each_entry_safe(state, n, &vop_win->pending, head) {
- if (state == new_active)
- break;
- vop_win_state_complete(vop_win, state);
- vop_win_state_destroy(state);
+ for (i = 0; i < vop->data->win_size; i++) {
+ if (!vop_win_pending_is_complete(&vop->win[i]))
+ return;
}

- vop_win_state_complete(vop_win, new_active);
-
- if (vop_win->active)
- vop_win_state_destroy(vop_win->active);
- vop_win->active = new_active;
-}
-
-static bool vop_win_has_pending_state(struct vop_win *vop_win)
-{
- return !list_empty(&vop_win->pending);
-}
-
-static irqreturn_t vop_isr_thread(int irq, void *data)
-{
- struct vop *vop = data;
- const struct vop_data *vop_data = vop->data;
- unsigned int i;
-
- mutex_lock(&vop->vsync_mutex);
-
- if (!vop->vsync_work_pending)
- goto done;
+ if (vop->event) {
+ spin_lock_irqsave(&drm->event_lock, flags);

- vop->vsync_work_pending = false;
+ drm_crtc_send_vblank_event(crtc, vop->event);
+ drm_crtc_vblank_put(crtc);
+ vop->event = NULL;

- for (i = 0; i < vop_data->win_size; i++) {
- struct vop_win *vop_win = &vop->win[i];
-
- vop_win_update_state(vop_win);
- if (vop_win_has_pending_state(vop_win))
- vop->vsync_work_pending = true;
+ spin_unlock_irqrestore(&drm->event_lock, flags);
}
-
-done:
- mutex_unlock(&vop->vsync_mutex);
-
- return IRQ_HANDLED;
+ if (!completion_done(&vop->wait_update_complete))
+ complete(&vop->wait_update_complete);
}

static irqreturn_t vop_isr(int irq, void *data)
@@ -1409,8 +1273,9 @@ static irqreturn_t vop_isr(int irq, void *data)

if (active_irqs & FS_INTR) {
drm_crtc_handle_vblank(crtc);
+ vop_handle_vblank(vop);
active_irqs &= ~FS_INTR;
- ret = (vop->vsync_work_pending) ? IRQ_WAKE_THREAD : IRQ_HANDLED;
+ ret = IRQ_HANDLED;
}

/* Unhandled irqs are spurious. */
@@ -1455,6 +1320,7 @@ static int vop_create_crtc(struct vop *vop)
}

plane = &vop_win->base;
+ drm_plane_helper_add(plane, &plane_helper_funcs);
if (plane->type == DRM_PLANE_TYPE_PRIMARY)
primary = plane;
else if (plane->type == DRM_PLANE_TYPE_CURSOR)
@@ -1490,6 +1356,7 @@ static int vop_create_crtc(struct vop *vop)
DRM_ERROR("failed to initialize overlay plane\n");
goto err_cleanup_crtc;
}
+ drm_plane_helper_add(&vop_win->base, &plane_helper_funcs);
}

port = of_get_child_by_name(dev->of_node, "port");
@@ -1500,6 +1367,7 @@ static int vop_create_crtc(struct vop *vop)
}

init_completion(&vop->dsp_hold_completion);
+ init_completion(&vop->wait_update_complete);
crtc->port = port;
rockchip_register_crtc_funcs(crtc, &private_crtc_funcs);

@@ -1633,7 +1501,6 @@ static void vop_win_init(struct vop *vop)

vop_win->data = win_data;
vop_win->vop = vop;
- INIT_LIST_HEAD(&vop_win->pending);
}
}

@@ -1694,8 +1561,8 @@ static int vop_bind(struct device *dev, struct device *master, void *data)

mutex_init(&vop->vsync_mutex);

- ret = devm_request_threaded_irq(dev, vop->irq, vop_isr, vop_isr_thread,
- IRQF_SHARED, dev_name(dev), vop);
+ ret = devm_request_irq(dev, vop->irq, vop_isr,
+ IRQF_SHARED, dev_name(dev), vop);
if (ret)
return ret;

--
1.7.9.5


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