C++ (Cpp) lspcon_wake_native_aux_chの例

コード例 #1

ファイル: intel_lspcon.c プロジェクト: mkahola/drm-intel-mika

void lspcon_resume(struct intel_lspcon *lspcon)
{
	enum drm_lspcon_mode expected_mode;

	if (lspcon_wake_native_aux_ch(lspcon)) {
		expected_mode = DRM_LSPCON_MODE_PCON;
		lspcon_resume_in_pcon_wa(lspcon);
	} else {
		expected_mode = DRM_LSPCON_MODE_LS;
	}

	if (lspcon_wait_mode(lspcon, expected_mode) == DRM_LSPCON_MODE_PCON)
		return;

	if (lspcon_change_mode(lspcon, DRM_LSPCON_MODE_PCON))
		DRM_ERROR("LSPCON resume failed\n");
	else
		DRM_DEBUG_KMS("LSPCON resume success\n");
}

コード例 #2

ファイル: intel_lspcon.c プロジェクト: avagin/linux

static bool lspcon_probe(struct intel_lspcon *lspcon)
{
	int retry;
	enum drm_dp_dual_mode_type adaptor_type;
	struct i2c_adapter *adapter = &lspcon_to_intel_dp(lspcon)->aux.ddc;
	enum drm_lspcon_mode expected_mode;

	expected_mode = lspcon_wake_native_aux_ch(lspcon) ?
			DRM_LSPCON_MODE_PCON : DRM_LSPCON_MODE_LS;

	/* Lets probe the adaptor and check its type */
	for (retry = 0; retry < 6; retry++) {
		if (retry)
			usleep_range(500, 1000);

		adaptor_type = drm_dp_dual_mode_detect(adapter);
		if (adaptor_type == DRM_DP_DUAL_MODE_LSPCON)
			break;
	}

	if (adaptor_type != DRM_DP_DUAL_MODE_LSPCON) {
		DRM_DEBUG_KMS("No LSPCON detected, found %s\n",
			       drm_dp_get_dual_mode_type_name(adaptor_type));
		return false;
	}

	/* Yay ... got a LSPCON device */
	DRM_DEBUG_KMS("LSPCON detected\n");
	lspcon->mode = lspcon_wait_mode(lspcon, expected_mode);

	/*
	 * In the SW state machine, lets Put LSPCON in PCON mode only.
	 * In this way, it will work with both HDMI 1.4 sinks as well as HDMI
	 * 2.0 sinks.
	 */
	if (lspcon->mode != DRM_LSPCON_MODE_PCON) {
		if (lspcon_change_mode(lspcon, DRM_LSPCON_MODE_PCON) < 0) {
			DRM_ERROR("LSPCON mode change to PCON failed\n");
			return false;
		}
	}
	return true;
}

コード例 #3

ファイル: intel_lspcon.c プロジェクト: mkahola/drm-intel-mika

static bool lspcon_probe(struct intel_lspcon *lspcon)
{
	enum drm_dp_dual_mode_type adaptor_type;
	struct i2c_adapter *adapter = &lspcon_to_intel_dp(lspcon)->aux.ddc;
	enum drm_lspcon_mode expected_mode;

	expected_mode = lspcon_wake_native_aux_ch(lspcon) ?
			DRM_LSPCON_MODE_PCON : DRM_LSPCON_MODE_LS;

	/* Lets probe the adaptor and check its type */
	adaptor_type = drm_dp_dual_mode_detect(adapter);
	if (adaptor_type != DRM_DP_DUAL_MODE_LSPCON) {
		DRM_DEBUG_KMS("No LSPCON detected, found %s\n",
			drm_dp_get_dual_mode_type_name(adaptor_type));
		return false;
	}

	/* Yay ... got a LSPCON device */
	DRM_DEBUG_KMS("LSPCON detected\n");
	lspcon->mode = lspcon_wait_mode(lspcon, expected_mode);
	lspcon->active = true;
	return true;
}