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drm/exynos: fix x, y coordinates for right bottom pixel 

The x, y coordinates of right bottom pixel cannot be negative numbers.

Signed-off-by: Joonyoung Shim <jy0922.shim@samsung.com>
Signed-off-by: Kyungmin Park <kyungmin.park@samsung.com>
Signed-off-by: Inki Dae <inki.dae@samsung.com>
This commit is contained in:
Joonyoung Shim 2012-12-14 15:48:23 +09:00 committed by Inki Dae
parent 60a705a9f9
commit f56aad3a69
1 changed files with 11 additions and 7 deletions
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18
drivers/gpu/drm/exynos/exynos_drm_fimd.c
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@ -471,6 +471,8 @@ static void fimd_win_commit(struct device *dev, int zpos)
struct fimd_win_data *win_data;
int win = zpos;
unsigned long val, alpha, size;
unsigned int last_x;
unsigned int last_y;
DRM_DEBUG_KMS("%s\n", __FILE__);
@ -524,16 +526,18 @@ static void fimd_win_commit(struct device *dev, int zpos)
VIDOSDxA_TOPLEFT_Y(win_data->offset_y);
writel(val, ctx->regs + VIDOSD_A(win));
val = VIDOSDxB_BOTRIGHT_X(win_data->offset_x +
win_data->ovl_width - 1) |
VIDOSDxB_BOTRIGHT_Y(win_data->offset_y +
win_data->ovl_height - 1);
last_x = win_data->offset_x + win_data->ovl_width;
if (last_x)
last_x--;
last_y = win_data->offset_y + win_data->ovl_height;
if (last_y)
last_y--;
val = VIDOSDxB_BOTRIGHT_X(last_x) | VIDOSDxB_BOTRIGHT_Y(last_y);
writel(val, ctx->regs + VIDOSD_B(win));
DRM_DEBUG_KMS("osd pos: tx = %d, ty = %d, bx = %d, by = %d\n",
win_data->offset_x, win_data->offset_y,
win_data->offset_x + win_data->ovl_width - 1,
win_data->offset_y + win_data->ovl_height - 1);
win_data->offset_x, win_data->offset_y, last_x, last_y);
/* hardware window 0 doesn't support alpha channel. */
if (win != 0) {