From: hyesoo.yu <hyesoo.yu@samsung.com>
Date: Tue, 10 Oct 2017 06:40:02 +0000 (+0900)
Subject: [COMMON] g2d: add limitations of H/W flow control
X-Git-Url: https://git.stricted.de/?a=commitdiff_plain;h=ed8d2e00f517f3be947f6b758e5a4072e90dcad9;p=GitHub%2FLineageOS%2Fandroid_kernel_motorola_exynos9610.git

[COMMON] g2d: add limitations of H/W flow control

When G2D performs a H/W Flow Control job, following
limitations are observed,

1. Does not support AFBC format is not supported
as the destination format
2. Z-Order of tile order is not supported

Change-Id: I0f5f0f08602a9000ee417e2ea349434a3af8a4a4
Signed-off-by: hyesoo.yu <hyesoo.yu@samsung.com>
---

diff --git a/drivers/gpu/exynos/g2d/g2d_command.c b/drivers/gpu/exynos/g2d/g2d_command.c
index e18b020524b5..b03018e28886 100644
--- a/drivers/gpu/exynos/g2d/g2d_command.c
+++ b/drivers/gpu/exynos/g2d/g2d_command.c
@@ -95,7 +95,8 @@ static void g2d_set_taskctl_commands(struct g2d_task *task)
 		regs[task->cmd_count].offset = G2D_TILE_DIRECTION_ORDER_REG;
 		regs[task->cmd_count].value = G2D_TILE_DIRECTION_VERTICAL;
 
-		if (IS_YUV420(mode) || IS_YUV422_2P(mode))
+		if (!IS_HWFC(task->flags) &&
+		    (IS_YUV420(mode) || IS_YUV422_2P(mode)))
 			regs[task->cmd_count].value |=
 					G2D_TILE_DIRECTION_ZORDER;
 
@@ -629,7 +630,7 @@ static bool g2d_validate_image_format(struct g2d_device *g2d_dev,
 	}
 
 	if (IS_HWFC(task->flags)) {
-		if (IS_AFBC(mode) || IS_UORDER(mode)) {
+		if ((dst && IS_AFBC(mode)) || IS_UORDER(mode)) {
 			dev_err(dev, "%s: Invalid HWFC format with %s\n",
 				__func__, IS_AFBC(mode) ? "AFBC" : "UORDER");
 			return false;