Merge "drm/msm/sde: update CWB detection logic" into dev/msm-4.14-display

#define TO_S15D16(_x_)	((_x_) << 7)

#define MULTIPLE_CONN_DETECTED(x) (x > 1)

static const u32 cwb_irq_tbl[PINGPONG_MAX] = {SDE_NONE, SDE_NONE,

	INTR_IDX_PP2_OVFL, INTR_IDX_PP3_OVFL, INTR_IDX_PP4_OVFL,

	INTR_IDX_PP5_OVFL, SDE_NONE, SDE_NONE};

static void _sde_enc_phys_wb_detect_cwb(struct sde_encoder_phys *phys_enc,

		struct drm_crtc_state *crtc_state)

{

	struct drm_connector *conn;

	struct drm_connector_state *conn_state;

	struct drm_encoder *encoder;

	struct sde_encoder_phys_wb *wb_enc = to_sde_encoder_phys_wb(phys_enc);

	const struct sde_wb_cfg *wb_cfg = wb_enc->hw_wb->caps;

	struct drm_connector_list_iter conn_iter;

	int conn_count = 0;

	phys_enc->in_clone_mode = false;

	if (!(wb_cfg->features & BIT(SDE_WB_HAS_CWB)))

		return;

	/* Count the number of connectors on the given crtc */

	drm_connector_list_iter_begin(crtc_state->crtc->dev, &conn_iter);

	drm_for_each_connector_iter(conn, &conn_iter) {

		conn_state =

			drm_atomic_get_connector_state(crtc_state->state, conn);

		if ((conn->state && conn->state->crtc == crtc_state->crtc) ||

				(conn_state &&

				 conn_state->crtc == crtc_state->crtc))

			conn_count++;

	}

	drm_connector_list_iter_end(&conn_iter);

	/* if any other encoder is connected to same crtc enable clone mode*/

	drm_for_each_encoder(encoder, crtc_state->crtc->dev) {

		if (encoder->crtc != crtc_state->crtc)

			continue;

	/* Enable clone mode If crtc has multiple connectors & one is WB */

	if (MULTIPLE_CONN_DETECTED(conn_count))

		if (phys_enc->parent != encoder) {

			phys_enc->in_clone_mode = true;

			break;

		}

	}

	SDE_DEBUG("detect CWB - status:%d\n", phys_enc->in_clone_mode);

}