vop support yuv with NV12, NV16 and NV24, only 2 plane yuv.

Signed-off-by: Mark Yao <mark.yao at rock-chips.com>

Changes in v2:
- Uv buffer not support odd offset, align it.
- Fix error display when move yuv image.  

---
 drivers/gpu/drm/rockchip/rockchip_drm_vop.c |   63 ++++++++++++++++++++++++---
 1 file changed, 57 insertions(+), 6 deletions(-)

diff --git a/drivers/gpu/drm/rockchip/rockchip_drm_vop.c 
b/drivers/gpu/drm/rockchip/rockchip_drm_vop.c
index 3c9f4f3..6ca08f8 100644
--- a/drivers/gpu/drm/rockchip/rockchip_drm_vop.c
+++ b/drivers/gpu/drm/rockchip/rockchip_drm_vop.c
@@ -373,6 +373,18 @@ static enum vop_data_format vop_convert_format(uint32_t 
format)
        }
 }

+static bool is_yuv_support(uint32_t format)
+{
+       switch (format) {
+       case DRM_FORMAT_NV12:
+       case DRM_FORMAT_NV16:
+       case DRM_FORMAT_NV24:
+               return true;
+       default:
+               return false;
+       }
+}
+
 static bool is_alpha_support(uint32_t format)
 {
        switch (format) {
@@ -577,16 +589,21 @@ static int vop_update_plane_event(struct drm_plane *plane,
        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;
        dma_addr_t yrgb_mst;
+       dma_addr_t uv_mst;
        enum vop_data_format format;
        uint32_t val;
        bool is_alpha;
+       bool is_yuv;
        bool visible;
        int ret;
        struct drm_rect dest = {
@@ -608,6 +625,12 @@ static int vop_update_plane_event(struct drm_plane *plane,
        };
        bool can_position = plane->type != DRM_PLANE_TYPE_PRIMARY;

+       if (drm_format_num_planes(fb->pixel_format) > 2) {
+               DRM_ERROR("unsupport more than 2 plane format[%08x]\n",
+                         fb->pixel_format);
+               return -EINVAL;
+       }
+
        ret = drm_plane_helper_check_update(plane, crtc, fb,
                                            &src, &dest, &clip,
                                            DRM_PLANE_HELPER_NO_SCALING,
@@ -624,28 +647,52 @@ static int vop_update_plane_event(struct drm_plane *plane,
        if (format < 0)
                return format;

+       is_yuv = is_yuv_support(fb->pixel_format);
+
        obj = rockchip_fb_get_gem_obj(fb, 0);
        if (!obj) {
                DRM_ERROR("fail to get rockchip gem object from framebuffer\n");
                return -EINVAL;
        }

+       if (is_yuv) {
+               src.x1 &= (~1) << 16;
+               src.y1 &= (~1) << 16;
+       }
+
        rk_obj = to_rockchip_obj(obj);

        actual_w = (src.x2 - src.x1) >> 16;
        actual_h = (src.y2 - src.y1) >> 16;
-       crtc_x = max(0, crtc_x);
-       crtc_y = max(0, crtc_y);

-       dsp_stx = crtc_x + crtc->mode.htotal - crtc->mode.hsync_start;
-       dsp_sty = crtc_y + crtc->mode.vtotal - crtc->mode.vsync_start;
+       dsp_stx = dest.x1 + crtc->mode.htotal - crtc->mode.hsync_start;
+       dsp_sty = dest.y1 + crtc->mode.vtotal - crtc->mode.vsync_start;

-       offset = (src.x1 >> 16) * (fb->bits_per_pixel >> 3);
+       offset = (src.x1 >> 16) * drm_format_plane_cpp(fb->pixel_format, 0);
        offset += (src.y1 >> 16) * fb->pitches[0];
-       yrgb_mst = rk_obj->dma_addr + offset;

+       yrgb_mst = rk_obj->dma_addr + offset + fb->offsets[0];
        y_vir_stride = fb->pitches[0] >> 2;

+       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);
+
+               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;
+
+               offset = (src.x1 >> 16) * bpp / hsub;
+               offset += (src.y1 >> 16) * fb->pitches[1] / vsub;
+
+               uv_mst = rk_uv_obj->dma_addr + offset + fb->offsets[1];
+       }
+
        /*
         * If this plane update changes the plane's framebuffer, (or more
         * precisely, if this update has a different framebuffer than the last
@@ -681,6 +728,10 @@ static int vop_update_plane_event(struct drm_plane *plane,
        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);
+       }
        val = (actual_h - 1) << 16;
        val |= (actual_w - 1) & 0xffff;
        VOP_WIN_SET(vop, win, act_info, val);
-- 
1.7.9.5


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