diff options
| author | Padmanabhan Komanduru <pkomandu@codeaurora.org> | 2016-08-31 12:31:32 +0530 |
|---|---|---|
| committer | Sandeep Panda <spanda@codeaurora.org> | 2017-03-01 14:30:22 +0530 |
| commit | 60a294148ffee7a59056d67e1dae8d387cf79d8c (patch) | |
| tree | ed7c546cfe7e89da6fa470e4b1f1748a34ed93d3 /drivers/video/fbdev | |
| parent | 59a631bcacba622a294d0c9e9e54ac9161413950 (diff) | |
msm: mdss: update the wait logic for sending DSI commands
For video mode panels, the assumption is that the vertical
blanking region will be maximum of 4 ms and hence, we wait for
4 ms before queuing the DSI DMA commands. With the incell panels
having huge vertical blanking region and dynamic fps feature,
this assumption is no longer safe. Update the wait logic by
calculating the vertical blanking duration.
Change-Id: I69fdc182342493a54d78ae3ce5f4729e17452155
Signed-off-by: Padmanabhan Komanduru <pkomandu@codeaurora.org>
Signed-off-by: Sandeep Panda <spanda@codeaurora.org>
Diffstat (limited to 'drivers/video/fbdev')
| -rw-r--r-- | drivers/video/fbdev/msm/mdss_dsi_host.c | 18 |
1 files changed, 16 insertions, 2 deletions
diff --git a/drivers/video/fbdev/msm/mdss_dsi_host.c b/drivers/video/fbdev/msm/mdss_dsi_host.c index d57558a1b52d..04ce8d6c11d2 100644 --- a/drivers/video/fbdev/msm/mdss_dsi_host.c +++ b/drivers/video/fbdev/msm/mdss_dsi_host.c @@ -41,6 +41,8 @@ #define LANE_SWAP_CTRL 0x0B0 #define LOGICAL_LANE_SWAP_CTRL 0x310 +#define CEIL(x, y) (((x) + ((y)-1)) / (y)) + struct mdss_dsi_ctrl_pdata *ctrl_list[DSI_CTRL_MAX]; struct mdss_hw mdss_dsi0_hw = { @@ -2369,14 +2371,26 @@ void mdss_dsi_wait4video_done(struct mdss_dsi_ctrl_pdata *ctrl) static int mdss_dsi_wait4video_eng_busy(struct mdss_dsi_ctrl_pdata *ctrl) { int ret = 0; + u32 v_total = 0, v_blank = 0, sleep_ms = 0, fps = 0; + struct mdss_panel_info *pinfo = &ctrl->panel_data.panel_info; if (ctrl->panel_mode == DSI_CMD_MODE) return ret; if (ctrl->ctrl_state & CTRL_STATE_MDP_ACTIVE) { mdss_dsi_wait4video_done(ctrl); - /* delay 4 ms to skip BLLP */ - usleep_range(4000, 4000); + v_total = mdss_panel_get_vtotal(pinfo); + v_blank = pinfo->lcdc.v_back_porch + pinfo->lcdc.v_front_porch + + pinfo->lcdc.v_pulse_width; + if (pinfo->dynamic_fps && pinfo->current_fps) + fps = pinfo->current_fps; + else + fps = pinfo->mipi.frame_rate; + + sleep_ms = CEIL((v_blank * 1000), (v_total * fps)) + 1; + /* delay sleep_ms to skip BLLP */ + if (sleep_ms) + udelay(sleep_ms * 1000); ret = 1; } |