evie/android_kernel_oneplus_msm8998
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msm: mdss: serialize dynamic fps and dynamic bit clock updates

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Dynamic refresh update and dynamic bit clock switch cannot happen
on the same vsync boundary. Serialize them in the commit thread
to avoid vsync timeout issues.

Change-Id: I55077eca7415bf307ddd30040024b3716a78f6fd
Signed-off-by: Padmanabhan Komanduru <pkomandu@codeaurora.org>
This commit is contained in:
Padmanabhan Komanduru 2018-11-13 15:35:04 +05:30
parent f1587d8660
commit 24dfb952e0
3 changed files with 66 additions and 10 deletions
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66
drivers/video/fbdev/msm/mdss_dsi.c
View file

@ -2370,6 +2370,49 @@ end_update:
return rc;
}
static int mdss_dsi_dynamic_bitclk_config(struct mdss_panel_data *pdata)
{
int rc = 0;
struct mdss_dsi_ctrl_pdata *ctrl_pdata = NULL;
struct mdss_panel_info *pinfo;
pr_debug("%s+:\n", __func__);
if (pdata == NULL) {
pr_err("%s: Invalid input data\n", __func__);
return -EINVAL;
}
ctrl_pdata = container_of(pdata, struct mdss_dsi_ctrl_pdata,
panel_data);
if (!ctrl_pdata->panel_data.panel_info.dynamic_bitclk) {
pr_err("Dynamic bitclk not enabled for this panel\n");
return -EINVAL;
}
pinfo = &pdata->panel_info;
if (!pinfo->new_clk_rate || (pinfo->clk_rate == pinfo->new_clk_rate)) {
pr_debug("Bit clock update is not needed\n");
return 0;
}
rc = __mdss_dsi_dynamic_clock_switch(&ctrl_pdata->panel_data,
pinfo->new_clk_rate);
if (!rc && mdss_dsi_is_hw_config_split(ctrl_pdata->shared_data)) {
struct mdss_dsi_ctrl_pdata *octrl =
mdss_dsi_get_other_ctrl(ctrl_pdata);
rc = __mdss_dsi_dynamic_clock_switch(&octrl->panel_data,
pinfo->new_clk_rate);
if (rc)
pr_err("failed to switch DSI bitclk for sctrl\n");
} else if (rc) {
pr_err("failed to switch DSI bitclk\n");
}
return rc;
}
static int mdss_dsi_dfps_config(struct mdss_panel_data *pdata, int new_fps)
{
int rc = 0;
@ -2821,19 +2864,14 @@ static ssize_t dynamic_bitclk_sysfs_wta(struct device *dev,
return -EINVAL;
}
rc = __mdss_dsi_dynamic_clock_switch(&ctrl_pdata->panel_data,
clk_rate);
if (!rc && mdss_dsi_is_hw_config_split(ctrl_pdata->shared_data)) {
pinfo->new_clk_rate = clk_rate;
if (mdss_dsi_is_hw_config_split(ctrl_pdata->shared_data)) {
struct mdss_dsi_ctrl_pdata *octrl =
mdss_dsi_get_other_ctrl(ctrl_pdata);
rc = __mdss_dsi_dynamic_clock_switch(&octrl->panel_data,
clk_rate);
if (rc)
pr_err("failed to switch DSI bitclk for sctrl\n");
} else if (rc) {
pr_err("failed to switch DSI bitclk\n");
}
struct mdss_panel_info *opinfo = &octrl->panel_data.panel_info;
opinfo->new_clk_rate = clk_rate;
}
return count;
} /* dynamic_bitclk_sysfs_wta */
@ -3061,6 +3099,14 @@ static int mdss_dsi_event_handler(struct mdss_panel_data *pdata,
case MDSS_EVENT_AVR_MODE:
mdss_dsi_avr_config(ctrl_pdata, (int)(unsigned long) arg);
break;
case MDSS_EVENT_DSI_DYNAMIC_BITCLK:
if (ctrl_pdata->panel_data.panel_info.dynamic_bitclk) {
rc = mdss_dsi_dynamic_bitclk_config(pdata);
if (rc)
pr_err("unable to change bitclk error-%d\n",
rc);
}
break;
default:
pr_debug("%s: unhandled event=%d\n", __func__, event);
break;

7
drivers/video/fbdev/msm/mdss_mdp_overlay.c
View file

@ -2659,6 +2659,13 @@ int mdss_mdp_overlay_kickoff(struct msm_fb_data_type *mfd,
goto commit_fail;
}
ret = mdss_mdp_ctl_intf_event(ctl, MDSS_EVENT_DSI_DYNAMIC_BITCLK,
NULL, CTL_INTF_EVENT_FLAG_SKIP_BROADCAST);
if (IS_ERR_VALUE(ret)) {
pr_err("failed to update dynamic bit clk!\n");
goto commit_fail;
}
mutex_lock(&mdp5_data->ov_lock);
/* Disable secure display/camera for video mode panels */

3
drivers/video/fbdev/msm/mdss_panel.h
View file

@ -308,6 +308,7 @@ enum mdss_intf_events {
MDSS_EVENT_DSI_TIMING_DB_CTRL,
MDSS_EVENT_AVR_MODE,
MDSS_EVENT_REGISTER_CLAMP_HANDLER,
MDSS_EVENT_DSI_DYNAMIC_BITCLK,
MDSS_EVENT_MAX,
};
@ -814,6 +815,8 @@ struct mdss_panel_info {
bool esd_check_enabled;
bool allow_phy_power_off;
char dfps_update;
/* new requested bitclk before it is updated in hw */
int new_clk_rate;
/* new requested fps before it is updated in hw */
int new_fps;
/* stores initial fps after boot */