Exemplos de drm_dp_get_adjust_request_voltage em C++ (Cpp)

Exemplo n.º 1

Arquivo: xilinx_drm_dp.c Projeto: akshayvaidya61/linux-xlnx

/**
 * xilinx_drm_dp_adjust_train - Adjust train values
 * @dp: DisplayPort IP core structure
 * @link_status: link status from sink which contains requested training values
 */
static void xilinx_drm_dp_adjust_train(struct xilinx_drm_dp *dp,
				       u8 link_status[DP_LINK_STATUS_SIZE])
{
	u8 *train_set = dp->train_set;
	u8 voltage = 0, preemphasis = 0;
	u8 i;

	for (i = 0; i < dp->mode.lane_cnt; i++) {
		u8 v = drm_dp_get_adjust_request_voltage(link_status, i);
		u8 p = drm_dp_get_adjust_request_pre_emphasis(link_status, i);

		if (v > voltage)
			voltage = v;

		if (p > preemphasis)
			preemphasis = p;
	}

	if (voltage >= DP_TRAIN_VOLTAGE_SWING_1200)
		voltage |= DP_TRAIN_MAX_SWING_REACHED;

	if (preemphasis >= DP_TRAIN_PRE_EMPHASIS_9_5)
		preemphasis |= DP_TRAIN_MAX_PRE_EMPHASIS_REACHED;

	for (i = 0; i < dp->mode.lane_cnt; i++)
		train_set[i] = voltage | preemphasis;
}

Exemplo n.º 2

Arquivo: edp_ctrl.c Projeto: AlexShiLucky/linux

static void edp_sink_train_set_adjust(struct edp_ctrl *ctrl,
	const u8 *link_status)
{
	int i;
	u8 max = 0;
	u8 data;

	/* use the max level across lanes */
	for (i = 0; i < ctrl->lane_cnt; i++) {
		data = drm_dp_get_adjust_request_voltage(link_status, i);
		DBG("lane=%d req_voltage_swing=0x%x", i, data);
		if (max < data)
			max = data;
	}

	ctrl->v_level = max >> DP_TRAIN_VOLTAGE_SWING_SHIFT;

	/* use the max level across lanes */
	max = 0;
	for (i = 0; i < ctrl->lane_cnt; i++) {
		data = drm_dp_get_adjust_request_pre_emphasis(link_status, i);
		DBG("lane=%d req_pre_emphasis=0x%x", i, data);
		if (max < data)
			max = data;
	}

	ctrl->p_level = max >> DP_TRAIN_PRE_EMPHASIS_SHIFT;
	DBG("v_level=%d, p_level=%d", ctrl->v_level, ctrl->p_level);
}

Exemplo n.º 3

Arquivo: intel_dp_link_training.c Projeto: linux-next/linux-next

static void
intel_get_adjust_train(struct intel_dp *intel_dp,
		       const uint8_t link_status[DP_LINK_STATUS_SIZE])
{
	uint8_t v = 0;
	uint8_t p = 0;
	int lane;
	uint8_t voltage_max;
	uint8_t preemph_max;

	for (lane = 0; lane < intel_dp->lane_count; lane++) {
		uint8_t this_v = drm_dp_get_adjust_request_voltage(link_status, lane);
		uint8_t this_p = drm_dp_get_adjust_request_pre_emphasis(link_status, lane);

		if (this_v > v)
			v = this_v;
		if (this_p > p)
			p = this_p;
	}

	voltage_max = intel_dp_voltage_max(intel_dp);
	if (v >= voltage_max)
		v = voltage_max | DP_TRAIN_MAX_SWING_REACHED;

	preemph_max = intel_dp_pre_emphasis_max(intel_dp, v);
	if (p >= preemph_max)
		p = preemph_max | DP_TRAIN_MAX_PRE_EMPHASIS_REACHED;

	for (lane = 0; lane < 4; lane++)
		intel_dp->train_set[lane] = v | p;
}

Exemplo n.º 4

Arquivo: atombios_dp.c Projeto: JabirTech/Source

static void dp_get_adjust_train(u8 link_status[DP_LINK_STATUS_SIZE],
				int lane_count,
				u8 train_set[4])
{
	u8 v = 0;
	u8 p = 0;
	int lane;

	for (lane = 0; lane < lane_count; lane++) {
		u8 this_v = drm_dp_get_adjust_request_voltage(link_status, lane);
		u8 this_p = drm_dp_get_adjust_request_pre_emphasis(link_status, lane);

		DRM_DEBUG_KMS("requested signal parameters: lane %d voltage %s pre_emph %s\n",
			  lane,
			  voltage_names[this_v >> DP_TRAIN_VOLTAGE_SWING_SHIFT],
			  pre_emph_names[this_p >> DP_TRAIN_PRE_EMPHASIS_SHIFT]);

		if (this_v > v)
			v = this_v;
		if (this_p > p)
			p = this_p;
	}

	if (v >= DP_VOLTAGE_MAX)
		v |= DP_TRAIN_MAX_SWING_REACHED;

	if (p >= DP_PRE_EMPHASIS_MAX)
		p |= DP_TRAIN_MAX_PRE_EMPHASIS_REACHED;

	DRM_DEBUG_KMS("using signal parameters: voltage %s pre_emph %s\n",
		  voltage_names[(v & DP_TRAIN_VOLTAGE_SWING_MASK) >> DP_TRAIN_VOLTAGE_SWING_SHIFT],
		  pre_emph_names[(p & DP_TRAIN_PRE_EMPHASIS_MASK) >> DP_TRAIN_PRE_EMPHASIS_SHIFT]);

	for (lane = 0; lane < 4; lane++)
		train_set[lane] = v | p;
}