drm/i915/sdvo: Port the infoframe code to the shared infrastructure

static bool intel_sdvo_set_avi_infoframe(struct intel_sdvo *intel_sdvo,

					 const struct drm_display_mode *adjusted_mode)

{

	struct dip_infoframe avi_if = {

		.type = DIP_TYPE_AVI,

		.ver = DIP_VERSION_AVI,

		.len = DIP_LEN_AVI,

	};

	uint8_t sdvo_data[4 + sizeof(avi_if.body.avi)];

	struct intel_crtc *intel_crtc = to_intel_crtc(intel_sdvo->base.base.crtc);

	uint8_t sdvo_data[HDMI_INFOFRAME_SIZE(AVI)];

	struct drm_crtc *crtc = intel_sdvo->base.base.crtc;

	struct intel_crtc *intel_crtc = to_intel_crtc(crtc);

	union hdmi_infoframe frame;

	int ret;

	ssize_t len;

	ret = drm_hdmi_avi_infoframe_from_display_mode(&frame.avi,

						       adjusted_mode);

	if (ret < 0) {

		DRM_ERROR("couldn't fill AVI infoframe\n");

		return false;

	}

	if (intel_sdvo->rgb_quant_range_selectable) {

		if (intel_crtc->config.limited_color_range)

			avi_if.body.avi.ITC_EC_Q_SC |= DIP_AVI_RGB_QUANT_RANGE_LIMITED;

			frame.avi.quantization_range =

				HDMI_QUANTIZATION_RANGE_LIMITED;

		else

			avi_if.body.avi.ITC_EC_Q_SC |= DIP_AVI_RGB_QUANT_RANGE_FULL;

			frame.avi.quantization_range =

				HDMI_QUANTIZATION_RANGE_FULL;

	}

	avi_if.body.avi.VIC = drm_match_cea_mode(adjusted_mode);

	intel_dip_infoframe_csum(&avi_if);

	/* sdvo spec says that the ecc is handled by the hw, and it looks like

	 * we must not send the ecc field, either. */

	memcpy(sdvo_data, &avi_if, 3);

	sdvo_data[3] = avi_if.checksum;

	memcpy(&sdvo_data[4], &avi_if.body, sizeof(avi_if.body.avi));

	len = hdmi_infoframe_pack(&frame, sdvo_data, sizeof(sdvo_data));

	if (len < 0)

		return false;

	return intel_sdvo_write_infoframe(intel_sdvo, SDVO_HBUF_INDEX_AVI_IF,

					  SDVO_HBUF_TX_VSYNC,