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fbdev: sh_mobile_meram: Fix MExxCTL register save on runtime PM suspend 

To reset the ICB on resume the MExxCTL register needs to be OR'ed with
MExxCTL_WBF | MExxCTL_WF | MExxCTL_RF, no set to that value. Fix this.

This fixes corruption at the bottom of the display when resuming from
runtime PM.

Signed-off-by: Laurent Pinchart <laurent.pinchart@ideasonboard.com>
This commit is contained in:
Laurent Pinchart 2011-07-13 12:13:47 +02:00
parent 7963e21e50
commit d86d29df57
1 changed files with 1 additions and 1 deletions
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2
drivers/video/sh_mobile_meram.c
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@ -549,7 +549,7 @@ static int sh_mobile_meram_runtime_suspend(struct device *dev)
meram_read_icb(priv->base, j, icb_regs[k]);
/* Reset ICB on resume */
if (icb_regs[k] == MExxCTL)
priv->icb_saved_regs[j * ICB_REGS_SIZE + k] =
priv->icb_saved_regs[j * ICB_REGS_SIZE + k] |=
MExxCTL_WBF | MExxCTL_WF | MExxCTL_RF;
}
}