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msm: display: reduce timeline to 1 for smart panel

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For smart display, dsi command and wfd, since it has its
own buffer, the input buffer can be released once the
display commit finishes, hence the fence threshold for
creation can be smaller. This patch reduce the timeline
from 2 to 1 for samrt panels. Also, it needs to
wait4dmap/wait4ov after kicked off. Otherwise, tearing may
happen.

Change-Id: I9eca871d8d863ef23b1d67b6e1e9cffea40ae4a6
Signed-off-by: Ken Zhang <kenz@codeaurora.org>
Signed-off-by: Kuogee Hsieh <khsieh@codeaurora.org>
This commit is contained in:
Ken Zhang 2013-02-03 14:17:06 -05:00 committed by Iliyan Malchev
parent d21375bd0e
commit 5fe00a30c9
2 changed files with 15 additions and 5 deletions
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12
drivers/video/msm/mdp4_overlay_dsi_cmd.c
View file

@ -155,7 +155,7 @@ static void mdp4_dsi_cmd_do_blt(struct msm_fb_data_type *mfd, int enable)
int cndx = 0;
struct vsycn_ctrl *vctrl;
struct mdp4_overlay_pipe *pipe;
int need_wait;
int need_wait = 0;
vctrl = &vsync_ctrl_db[cndx];
pipe = vctrl->base_pipe;
@ -405,8 +405,12 @@ int mdp4_dsi_cmd_pipe_commit(int cndx, int wait)
mdp4_stat.overlay_commit[pipe->mixer_num]++;
if (wait)
mdp4_dsi_cmd_wait4vsync(0);
if (wait) {
if (pipe->ov_blt_addr)
mdp4_dsi_cmd_wait4ov(0);
else
mdp4_dsi_cmd_wait4dmap(0);
}
return cnt;
}
@ -1207,7 +1211,7 @@ void mdp4_dsi_cmd_overlay(struct msm_fb_data_type *mfd)
}
mdp4_overlay_mdp_perf_upd(mfd, 1);
mdp4_dsi_cmd_pipe_commit(cndx, 0);
mdp4_dsi_cmd_pipe_commit(cndx, 1);
mdp4_overlay_mdp_perf_upd(mfd, 0);
mutex_unlock(&mfd->dma->ov_mutex);

8
drivers/video/msm/msm_fb.c
View file

@ -3601,6 +3601,7 @@ static int msmfb_handle_buf_sync_ioctl(struct msm_fb_data_type *mfd,
struct mdp_buf_sync *buf_sync)
{
int i, fence_cnt = 0, ret = 0;
u32 threshold;
int acq_fen_fd[MDP_MAX_FENCE_FD];
struct sync_fence *fence;
@ -3636,8 +3637,13 @@ static int msmfb_handle_buf_sync_ioctl(struct msm_fb_data_type *mfd,
if (buf_sync->flags & MDP_BUF_SYNC_FLAG_WAIT) {
msm_fb_wait_for_fence(mfd);
}
if ((mfd->panel.type == MIPI_CMD_PANEL) ||
(mfd->panel.type == WRITEBACK_PANEL))
threshold = 1;
else
threshold = 2;
mfd->cur_rel_sync_pt = sw_sync_pt_create(mfd->timeline,
mfd->timeline_value + 2);
mfd->timeline_value + threshold);
if (mfd->cur_rel_sync_pt == NULL) {
pr_err("%s: cannot create sync point", __func__);
ret = -ENOMEM;