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Commit 62610cd7 authored by Raviteja Tamatam's avatar Raviteja Tamatam
Browse files

disp: msm: avoid removing BW vote when layers are staged 



In cases like doze suspend bandwidth values are received
zero even though layers are staged. In such case previous
bandwidth vote is retained to avoid removal of votes from
display side.

Change-Id: I84d3f91ccb8cd1ee013677e2c05fcf24ae20db21
Signed-off-by: default avatarRaviteja Tamatam <travitej@codeaurora.org>
parent 5c49ac43

msm/sde/sde_core_perf.c

+58 −0
Original line number Diff line number Diff line
@@ -84,6 +84,62 @@ static bool _sde_core_perf_crtc_is_power_on(struct drm_crtc *crtc) 
	return sde_crtc_is_enabled(crtc);

}



static void _sde_core_perf_calc_doze_suspend(struct drm_crtc *crtc,

		struct drm_crtc_state *state,

		struct sde_core_perf_params *perf)

{

	struct sde_crtc_state *new_cstate, *old_cstate;

	struct sde_core_perf_params *old_perf;

	struct drm_connector *conn;

	struct sde_connector *c_conn;

	bool is_doze_suspend = false;

	int i;



	if (!crtc || !crtc->state || !state)

		return;



	old_cstate = to_sde_crtc_state(crtc->state);

	new_cstate = to_sde_crtc_state(state);

	old_perf = &old_cstate->new_perf;



	if (!old_perf)

		return;



	if (!perf->bw_ctl[SDE_POWER_HANDLE_DBUS_ID_LLCC] &&

		!perf->max_per_pipe_ib[SDE_POWER_HANDLE_DBUS_ID_LLCC] &&

		!perf->bw_ctl[SDE_POWER_HANDLE_DBUS_ID_EBI] &&

		!perf->max_per_pipe_ib[SDE_POWER_HANDLE_DBUS_ID_EBI] &&

		state->plane_mask) {



		perf->bw_ctl[SDE_POWER_HANDLE_DBUS_ID_LLCC] =

			old_perf->bw_ctl[SDE_POWER_HANDLE_DBUS_ID_LLCC];

		perf->max_per_pipe_ib[SDE_POWER_HANDLE_DBUS_ID_LLCC] =

		  old_perf->max_per_pipe_ib[SDE_POWER_HANDLE_DBUS_ID_LLCC];

		perf->bw_ctl[SDE_POWER_HANDLE_DBUS_ID_EBI] =

			old_perf->bw_ctl[SDE_POWER_HANDLE_DBUS_ID_EBI];

		perf->max_per_pipe_ib[SDE_POWER_HANDLE_DBUS_ID_EBI] =

		  old_perf->max_per_pipe_ib[SDE_POWER_HANDLE_DBUS_ID_EBI];



		for (i = 0; i < new_cstate->num_connectors; i++) {

			conn = new_cstate->connectors[i];

			if (!conn)

				continue;

			c_conn = to_sde_connector(conn);

			if ((c_conn->dpms_mode == DRM_MODE_DPMS_ON) &&

			   (sde_connector_get_lp(conn) == SDE_MODE_DPMS_LP2))

				is_doze_suspend = true;

		}



		if (!is_doze_suspend) {

			SDE_DEBUG("No BW, planes:%x dpms_mode:%d lpmode:%d\n",

				state->plane_mask, c_conn->dpms_mode,

				sde_connector_get_lp(conn));

			SDE_EVT32(state->plane_mask, c_conn->dpms_mode,

				sde_connector_get_lp(conn), SDE_EVTLOG_ERROR);

		}

	}

}



static void _sde_core_perf_calc_crtc(struct sde_kms *kms,

		struct drm_crtc *crtc,

		struct drm_crtc_state *state,
@@ -128,6 +184,8 @@ static void _sde_core_perf_calc_crtc(struct sde_kms *kms, 
	perf->core_clk_rate =

			sde_crtc_get_property(sde_cstate, CRTC_PROP_CORE_CLK);



	_sde_core_perf_calc_doze_suspend(crtc, state, perf);



	if (!sde_cstate->bw_control) {

		for (i = 0; i < SDE_POWER_HANDLE_DBUS_ID_MAX; i++) {

			perf->bw_ctl[i] = kms->catalog->perf.max_bw_high *