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>
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@ -1348,8 +1348,14 @@ static void s3c_fb_clear_win(struct s3c_fb *sfb, int win)
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writel(0, regs + VIDOSD_A(win, sfb->variant));
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writel(0, regs + VIDOSD_B(win, sfb->variant));
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writel(0, regs + VIDOSD_C(win, sfb->variant));
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reg = readl(regs + SHADOWCON);
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writel(reg & ~SHADOWCON_WINx_PROTECT(win), regs + SHADOWCON);
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if (sfb->variant.has_shadowcon) {
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reg = readl(sfb->regs + SHADOWCON);
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reg &= ~(SHADOWCON_WINx_PROTECT(win) |
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SHADOWCON_CHx_ENABLE(win) |
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SHADOWCON_CHx_LOCAL_ENABLE(win));
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writel(reg, sfb->regs + SHADOWCON);
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}
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}
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static int __devinit s3c_fb_probe(struct platform_device *pdev)
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