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disp: msm: dp: filter modes based on sde resource availability

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Not considering the currently available sde resources and
caps while filtering/validating a mode will report unavailable
modes and result in an atomic commit failure.
DP should calculate the number of required lms and verify
if lms/3dmux are available before a validating a mode.

Change-Id: Idadcc655c30f5a831c47cf22b60085052b5b9fcd
Signed-off-by: Nilaan Gunabalachandran <ngunabal@codeaurora.org>
This commit is contained in:
Nilaan Gunabalachandran 2019-06-03 16:47:50 -04:00
parent c7bf5c0293
commit 98434934c6
3 changed files with 18 additions and 4 deletions
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16
msm/dp/dp_display.c
View File

@ -1860,7 +1860,8 @@ end:
static enum drm_mode_status dp_display_validate_mode(
struct dp_display *dp_display,
void *panel, struct drm_display_mode *mode)
void *panel, struct drm_display_mode *mode,
const struct msm_resource_caps_info *avail_res)
{
struct dp_display_private *dp;
struct drm_dp_link *link_info;
@ -1873,8 +1874,10 @@ static enum drm_mode_status dp_display_validate_mode(
int hdis, vdis, vref, ar, _hdis, _vdis, _vref, _ar, rate;
struct dp_display_mode dp_mode;
bool dsc_en;
u32 num_lm = 0;
if (!dp_display || !mode || !panel) {
if (!dp_display || !mode || !panel ||
!avail_res || !avail_res->max_mixer_width) {
pr_err("invalid params\n");
return mode_status;
}
@ -1917,6 +1920,15 @@ static enum drm_mode_status dp_display_validate_mode(
goto end;
}
num_lm = (avail_res->max_mixer_width <= mode->hdisplay) ?
2 : 1;
if (num_lm > avail_res->num_lm ||
(num_lm == 2 && !avail_res->num_3dmux)) {
DP_MST_DEBUG("num_lm:%d, req lm:%d 3dmux:%d\n", num_lm,
avail_res->num_lm, avail_res->num_3dmux);
goto end;
}
/*
* If the connector exists in the mst connector list and if debug is
* enabled for that connector, use the mst connector settings from the

3
msm/dp/dp_display.h
View File

@ -78,7 +78,8 @@ struct dp_display {
int (*set_mode)(struct dp_display *dp_display, void *panel,
struct dp_display_mode *mode);
enum drm_mode_status (*validate_mode)(struct dp_display *dp_display,
void *panel, struct drm_display_mode *mode);
void *panel, struct drm_display_mode *mode,
const struct msm_resource_caps_info *avail_res);
int (*get_modes)(struct dp_display *dp_display, void *panel,
struct dp_display_mode *dp_mode);
int (*prepare)(struct dp_display *dp_display, void *panel);

3
msm/dp/dp_drm.c
View File

@ -600,7 +600,8 @@ enum drm_mode_status dp_connector_mode_valid(struct drm_connector *connector,
dp_disp = display;
mode->vrefresh = drm_mode_vrefresh(mode);
return dp_disp->validate_mode(dp_disp, sde_conn->drv_panel, mode);
return dp_disp->validate_mode(dp_disp, sde_conn->drv_panel,
mode, avail_res);
}
int dp_connector_update_pps(struct drm_connector *connector,