[PATCH 06/11] video: sunxi: de2: Tell the display the frame buffer size

[Ana Bobillo <anabobillo3@gmail.com>]

From: Ana Bobillo <anabobillo3@gmail.com>

The DE2 driver reserves a frame buffer for LCD_MAX_WIDTH x
LCD_MAX_HEIGHT at 32bpp, but takes whatever mode the HDMI encoder reads
from the display's EDID, while sunxi_dw_hdmi_mode_valid() only checks
the pixel clock. A display announcing a larger mode makes the frame
buffer run past the reserved memory.

Pass the reserved size and depth to the display before reading the
timing, so that only modes which fit are used.

Fixes: 56009451d843 ("sunxi: video: Add A64/H3/H5 HDMI driver")
Signed-off-by: Ana Bobillo <anabobillo3@gmail.com>
---
 drivers/video/sunxi/sunxi_de2.c | 3 +++
 1 file changed, 3 insertions(+)

diff --git a/drivers/video/sunxi/sunxi_de2.c b/drivers/video/sunxi/sunxi_de2.c
index ab36ee1595b..383cf47b907 100644
--- a/drivers/video/sunxi/sunxi_de2.c
+++ b/drivers/video/sunxi/sunxi_de2.c
@@ -181,6 +181,7 @@ static int sunxi_de2_init(struct udevice *dev, ulong fbbase,
 			  enum video_log2_bpp l2bpp,
 			  struct udevice *disp, int mux, bool is_composite)
 {
+	struct video_uc_plat *plat = dev_get_uclass_plat(dev);
 	struct video_priv *uc_priv = dev_get_uclass_priv(dev);
 	struct display_timing timing;
 	struct display_plat *disp_uc_plat;
@@ -194,6 +195,8 @@ static int sunxi_de2_init(struct udevice *dev, ulong fbbase,
 	}
 
 	disp_uc_plat->source_id = mux;
+	disp_uc_plat->fb_size = plat->size;
+	disp_uc_plat->fb_bpp = 1 << l2bpp;
 
 	ret = display_read_timing(disp, &timing);
 	if (ret) {