Change in coreboot[master]: cbgfx: Add portrait screen support

[Martin Roth (Code Review)]

Martin Roth has submitted this change and it was merged. ( https://review.coreboot.org/19474 )

Change subject: cbgfx: Add portrait screen support
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cbgfx: Add portrait screen support

cbgfx currently does not support portrait screen which height >width.
so add it.

Change-Id: I66fee6d73654e736a2db4a3d191f030c52a23e0d
Signed-off-by: Nickey Yang 
Reviewed-on: https://review.coreboot.org/19474
Tested-by: build bot (Jenkins)
Reviewed-by: Julius Werner 
---
M payloads/libpayload/drivers/video/graphics.c
1 file changed, 10 insertions(+), 10 deletions(-)

Approvals:
  Julius Werner: Looks good to me, approved
  build bot (Jenkins): Verified

diff --git a/payloads/libpayload/drivers/video/graphics.c b/payloads/libpayload/drivers/video/graphics.c
index 4a8792c..d4eaa09 100644
--- a/payloads/libpayload/drivers/video/graphics.c
+++ b/payloads/libpayload/drivers/video/graphics.c
@@ -154,18 +154,18 @@
    screen.offset.x = 0;
    screen.offset.y = 0;

-	/* Calculate canvas size & offset, assuming the screen is landscape */
+	/* Calculate canvas size & offset. Canvas is always square. */
    if (screen.size.height > screen.size.width) {
-		const int bpl = fbinfo->bytes_per_line;
-		LOG("Portrait screen not supported, forcing square image!\n");
-		memset(fbaddr + screen.size.width * bpl, 0,
-		       (screen.size.height - screen.size.width) * bpl);
-		screen.size.height = screen.size.width;
+		canvas.size.height = screen.size.width;
+		canvas.size.width = canvas.size.height;
+		canvas.offset.x = 0;
+		canvas.offset.y = (screen.size.height - canvas.size.height) / 2;
+	} else {
+		canvas.size.height = screen.size.height;
+		canvas.size.width = canvas.size.height;
+		canvas.offset.x = (screen.size.width - canvas.size.width) / 2;
+		canvas.offset.y = 0;
    }
-	canvas.size.height = screen.size.height;
-	canvas.size.width = canvas.size.height;
-	canvas.offset.x = (screen.size.width - canvas.size.width) / 2;
-	canvas.offset.y = 0;

initialized = 1;
    LOG("cbgfx initialized: screen:width=%d, height=%d, offset=%d canvas:width=%d, height=%d, offset=%d\n",