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| author | Dima Zavin <dima@android.com> | 2011-03-02 13:16:36 -0800 |
|---|---|---|
| committer | David Brown <davidb@codeaurora.org> | 2011-03-02 13:43:15 -0800 |
| commit | b0a679326ce90e65779178906df5b8b6180163d6 (patch) | |
| tree | 27fd11f34cdf1fdc880730a2c22b59aeba718276 /drivers/video/msm | |
| parent | bd32344a6baa8baac9c2b3e9c6c649cc4ed53920 (diff) | |
| download | linux-3.10-b0a679326ce90e65779178906df5b8b6180163d6.tar.gz linux-3.10-b0a679326ce90e65779178906df5b8b6180163d6.tar.bz2 linux-3.10-b0a679326ce90e65779178906df5b8b6180163d6.zip | |
video: msmfb: Put the partial update magic value into the fix_screen struct.
This can then be tested by userspace to see if the capability is supported.
Userspace cannot rely on that value being left in var_screen, since userspace
itself can change it.
Signed-off-by: Dima Zavin <dima@android.com>
Signed-off-by: Carl Vanderlip <carlv@codeaurora.org>
Signed-off-by: David Brown <davidb@codeaurora.org>
Diffstat (limited to 'drivers/video/msm')
| -rw-r--r-- | drivers/video/msm/msm_fb.c | 12 |
1 files changed, 12 insertions, 0 deletions
diff --git a/drivers/video/msm/msm_fb.c b/drivers/video/msm/msm_fb.c index 5436aeb9445..fe5efe59d5c 100644 --- a/drivers/video/msm/msm_fb.c +++ b/drivers/video/msm/msm_fb.c @@ -469,6 +469,18 @@ static void setup_fb_info(struct msmfb_info *msmfb) fb_info->var.yoffset = 0; if (msmfb->panel->caps & MSMFB_CAP_PARTIAL_UPDATES) { + /* + * Set the param in the fixed screen, so userspace can't + * change it. This will be used to check for the + * capability. + */ + fb_info->fix.reserved[0] = 0x5444; + fb_info->fix.reserved[1] = 0x5055; + + /* + * This preloads the value so that if userspace doesn't + * change it, it will be a full update + */ fb_info->var.reserved[0] = 0x54445055; fb_info->var.reserved[1] = 0; fb_info->var.reserved[2] = (uint16_t)msmfb->xres | |