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msm: mdss: configure overfetch in software pixel ext

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MDSS hardware accepts 0 or greater value for repeat
pixel. However, if software tries to configure the
negative value it leads to underrun due to large value.
In such cases, software should configure the overfetch
block which allows the negative value.

CRs-fixed: 814452
Change-Id: I915a1f10951ae12d451cbf4a5fdff427174d32dc
Signed-off-by: Dhaval Patel <pdhaval@codeaurora.org>
This commit is contained in:
Dhaval Patel 2015-04-17 15:41:09 -07:00 • committed by David Keitel
parent a8e138b0aa
commit e0c0e4d04e
1 changed files with 34 additions and 5 deletions
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39
drivers/video/fbdev/msm/mdss_mdp_pipe.c
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@ -2277,15 +2277,44 @@ void mdss_mdp_pipe_calc_pixel_extn(struct mdss_mdp_pipe *pipe)
pipe->scale.num_ext_pxls_btm[i] -= 1;
}
pipe->scale.left_rpt[i] = pipe->scale.num_ext_pxls_left[i];
pipe->scale.right_rpt[i] = pipe->scale.num_ext_pxls_right[i];
pipe->scale.top_rpt[i] = pipe->scale.num_ext_pxls_top[i];
pipe->scale.btm_rpt[i] = pipe->scale.num_ext_pxls_btm[i];
pr_debug("plane=%d, left=%d, right=%d, top=%d, btm=%d\n",
if (pipe->scale.num_ext_pxls_left[i] >= 0)
pipe->scale.left_rpt[i] =
pipe->scale.num_ext_pxls_left[i];
else
pipe->scale.left_ftch[i] =
pipe->scale.num_ext_pxls_left[i];
if (pipe->scale.num_ext_pxls_right[i] >= 0)
pipe->scale.right_rpt[i] =
pipe->scale.num_ext_pxls_right[i];
else
pipe->scale.right_ftch[i] =
pipe->scale.num_ext_pxls_right[i];
if (pipe->scale.num_ext_pxls_top[i] >= 0)
pipe->scale.top_rpt[i] =
pipe->scale.num_ext_pxls_top[i];
else
pipe->scale.top_ftch[i] =
pipe->scale.num_ext_pxls_top[i];
if (pipe->scale.num_ext_pxls_btm[i] >= 0)
pipe->scale.btm_rpt[i] =
pipe->scale.num_ext_pxls_btm[i];
else
pipe->scale.btm_ftch[i] =
pipe->scale.num_ext_pxls_btm[i];
pr_debug("plane repeat=%d, left=%d, right=%d, top=%d, btm=%d\n",
i, pipe->scale.left_rpt[i],
pipe->scale.right_rpt[i],
pipe->scale.top_rpt[i],
pipe->scale.btm_rpt[i]);
pr_debug("plane overfetch=%d, left=%d, right=%d, top=%d, btm=%d\n",
i, pipe->scale.left_ftch[i],
pipe->scale.right_ftch[i],
pipe->scale.top_ftch[i],
pipe->scale.btm_ftch[i]);
}
pipe->scale.enable_pxl_ext = 1;