diff options
| author | Jingoo Han <jg1.han@samsung.com> | 2011-12-08 18:08:00 +0900 |
|---|---|---|
| committer | Florian Tobias Schandinat <FlorianSchandinat@gmx.de> | 2011-12-19 20:06:24 +0000 |
| commit | ff8c91072389491375f6d1ea86ce55942c460a04 (patch) | |
| tree | b449eda8941bd1d7f1b7423f684e0ec66590a785 /drivers/video/s3c-fb.c | |
| parent | 35784b4315d949e431df9a0ffef721a4801b1588 (diff) | |
video: s3c-fb: add shadow register protect
Shadow registers should be protectd whenever the registers are
updated. Shadow registers are updated after SHADOWCON shadow
register is cleared.
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 | 16 |
1 files changed, 15 insertions, 1 deletions
diff --git a/drivers/video/s3c-fb.c b/drivers/video/s3c-fb.c index 25a5c7665855..a0b3fd670f71 100644 --- a/drivers/video/s3c-fb.c +++ b/drivers/video/s3c-fb.c @@ -812,12 +812,16 @@ static int s3c_fb_blank(int blank_mode, struct fb_info *info) case FB_BLANK_NORMAL: /* disable the DMA and display 0x0 (black) */ + shadow_protect_win(win, 1); writel(WINxMAP_MAP | WINxMAP_MAP_COLOUR(0x0), sfb->regs + sfb->variant.winmap + (index * 4)); + shadow_protect_win(win, 0); break; case FB_BLANK_UNBLANK: + shadow_protect_win(win, 1); writel(0x0, sfb->regs + sfb->variant.winmap + (index * 4)); + shadow_protect_win(win, 0); wincon |= WINCONx_ENWIN; sfb->enabled |= (1 << index); break; @@ -828,7 +832,9 @@ static int s3c_fb_blank(int blank_mode, struct fb_info *info) return 1; } + shadow_protect_win(win, 1); writel(wincon, sfb->regs + sfb->variant.wincon + (index * 4)); + shadow_protect_win(win, 0); /* Check the enabled state to see if we need to be running the * main LCD interface, as if there are no active windows then @@ -847,8 +853,11 @@ static int s3c_fb_blank(int blank_mode, struct fb_info *info) /* we're stuck with this until we can do something about overriding * the power control using the blanking event for a single fb. */ - if (index == sfb->pdata->default_win) + if (index == sfb->pdata->default_win) { + shadow_protect_win(win, 1); s3c_fb_enable(sfb, blank_mode != FB_BLANK_POWERDOWN ? 1 : 0); + shadow_protect_win(win, 0); + } return 0; } @@ -1551,10 +1560,15 @@ static int s3c_fb_resume(struct device *dev) for (win_no = 0; win_no < sfb->variant.nr_windows - 1; win_no++) { void __iomem *regs = sfb->regs + sfb->variant.keycon; + win = sfb->windows[win_no]; + if (!win) + continue; + shadow_protect_win(win, 1); regs += (win_no * 8); writel(0xffffff, regs + WKEYCON0); writel(0xffffff, regs + WKEYCON1); + shadow_protect_win(win, 0); } /* restore framebuffers */ |