diff options
| author | Jingoo Han <jg1.han@samsung.com> | 2012-06-11 06:26:41 +0400 |
|---|---|---|
| committer | Florian Tobias Schandinat <FlorianSchandinat@gmx.de> | 2012-06-13 21:34:16 +0400 |
| commit | ecd57ae28eb34e2b34fac1c5b74bb876efa665c0 (patch) | |
| tree | 4c135d4bc0f6111b4ec8b1eb4a5010b41b86d029 /drivers/video/s3c-fb.c | |
| parent | 5fc05780b84d5227e6c15986f1bde488e52752bd (diff) | |
| download | linux-ecd57ae28eb34e2b34fac1c5b74bb876efa665c0.tar.xz | |
video: s3c-fb: clear SHADOWCON register when clearing hardware window registers
All bits of SHADOWCON register should be cleared when clearing
hardware window registers; however, some bits of SHADOWCON register
are not cleared previously.
Signed-off-by: Jingoo Han <jg1.han@samsung.com>
Signed-off-by: Florian Tobias Schandinat <FlorianSchandinat@gmx.de>
Diffstat (limited to 'drivers/video/s3c-fb.c')
| -rw-r--r-- | drivers/video/s3c-fb.c | 10 |
1 files changed, 8 insertions, 2 deletions
diff --git a/drivers/video/s3c-fb.c b/drivers/video/s3c-fb.c index 5f9d8e69029e..b5c29399a5ee 100644 --- a/drivers/video/s3c-fb.c +++ b/drivers/video/s3c-fb.c @@ -1348,8 +1348,14 @@ static void s3c_fb_clear_win(struct s3c_fb *sfb, int win) writel(0, regs + VIDOSD_A(win, sfb->variant)); writel(0, regs + VIDOSD_B(win, sfb->variant)); writel(0, regs + VIDOSD_C(win, sfb->variant)); - reg = readl(regs + SHADOWCON); - writel(reg & ~SHADOWCON_WINx_PROTECT(win), regs + SHADOWCON); + + if (sfb->variant.has_shadowcon) { + reg = readl(sfb->regs + SHADOWCON); + reg &= ~(SHADOWCON_WINx_PROTECT(win) | + SHADOWCON_CHx_ENABLE(win) | + SHADOWCON_CHx_LOCAL_ENABLE(win)); + writel(reg, sfb->regs + SHADOWCON); + } } static int __devinit s3c_fb_probe(struct platform_device *pdev) |