void lspcon_write_infoframe(struct intel_encoder *encoder,
const struct intel_crtc_state *crtc_state,
unsigned int type,
const void *frame, ssize_t len)
{
bool ret;
struct intel_dp *intel_dp = enc_to_intel_dp(&encoder->base);
struct intel_lspcon *lspcon = enc_to_intel_lspcon(&encoder->base);
/* LSPCON only needs AVI IF */
if (type != HDMI_INFOFRAME_TYPE_AVI)
return;
if (lspcon->vendor == LSPCON_VENDOR_MCA)
ret = _lspcon_write_avi_infoframe_mca(&intel_dp->aux,
frame, len);
else
ret = _lspcon_write_avi_infoframe_parade(&intel_dp->aux,
frame, len);
if (!ret) {
DRM_ERROR("Failed to write AVI infoframes\n");
return;
}
DRM_DEBUG_DRIVER("AVI infoframes updated successfully\n");
}
/*
* Sends the current backlight level over the aux channel, checking if its using
* 8-bit or 16 bit value (MSB and LSB)
*/
static void
intel_dp_aux_set_backlight(struct intel_connector *connector, u32 level)
{
struct intel_dp *intel_dp = enc_to_intel_dp(&connector->encoder->base);
uint8_t vals[2] = { 0x0 };
vals[0] = level;
/* Write the MSB and/or LSB */
if (intel_dp->edp_dpcd[2] & DP_EDP_BACKLIGHT_BRIGHTNESS_BYTE_COUNT) {
vals[0] = (level & 0xFF00) >> 8;
vals[1] = (level & 0xFF);
}
static void intel_ddi_mode_set(struct intel_encoder *encoder)
{
struct intel_crtc *crtc = to_intel_crtc(encoder->base.crtc);
int port = intel_ddi_get_encoder_port(encoder);
int pipe = crtc->pipe;
int type = encoder->type;
struct drm_display_mode *adjusted_mode = &crtc->config.adjusted_mode;
DRM_DEBUG_KMS("Preparing DDI mode on port %c, pipe %c\n",
port_name(port), pipe_name(pipe));
crtc->eld_vld = false;
if (type == INTEL_OUTPUT_DISPLAYPORT || type == INTEL_OUTPUT_EDP) {
struct intel_dp *intel_dp = enc_to_intel_dp(&encoder->base);
struct intel_digital_port *intel_dig_port =
enc_to_dig_port(&encoder->base);
intel_dp->DP = intel_dig_port->saved_port_bits |
DDI_BUF_CTL_ENABLE | DDI_BUF_EMP_400MV_0DB_HSW;
intel_dp->DP |= DDI_PORT_WIDTH(intel_dp->lane_count);
if (intel_dp->has_audio) {
DRM_DEBUG_DRIVER("DP audio on pipe %c on DDI\n",
pipe_name(crtc->pipe));
/* write eld */
DRM_DEBUG_DRIVER("DP audio: write eld information\n");
intel_write_eld(&encoder->base, adjusted_mode);
}
intel_dp_init_link_config(intel_dp);
} else if (type == INTEL_OUTPUT_HDMI) {
struct intel_hdmi *intel_hdmi = enc_to_intel_hdmi(&encoder->base);
if (intel_hdmi->has_audio) {
/* Proper support for digital audio needs a new logic
* and a new set of registers, so we leave it for future
* patch bombing.
*/
DRM_DEBUG_DRIVER("HDMI audio on pipe %c on DDI\n",
pipe_name(crtc->pipe));
/* write eld */
DRM_DEBUG_DRIVER("HDMI audio: write eld information\n");
intel_write_eld(&encoder->base, adjusted_mode);
}
intel_hdmi->set_infoframes(&encoder->base, adjusted_mode);
}
}
/*
* Read the current backlight value from DPCD register(s) based
* on if 8-bit(MSB) or 16-bit(MSB and LSB) values are supported
*/
static uint32_t intel_dp_aux_get_backlight(struct intel_connector *connector)
{
struct intel_dp *intel_dp = enc_to_intel_dp(&connector->encoder->base);
uint8_t read_val[2] = { 0x0 };
uint16_t level = 0;
if (drm_dp_dpcd_read(&intel_dp->aux, DP_EDP_BACKLIGHT_BRIGHTNESS_MSB,
&read_val, sizeof(read_val)) < 0) {
DRM_DEBUG_KMS("Failed to read DPCD register 0x%x\n",
DP_EDP_BACKLIGHT_BRIGHTNESS_MSB);
return 0;
}
level = read_val[0];
if (intel_dp->edp_dpcd[2] & DP_EDP_BACKLIGHT_BRIGHTNESS_BYTE_COUNT)
level = (read_val[0] << 8 | read_val[1]);
return level;
}
static void intel_ddi_mode_set(struct drm_encoder *encoder,
struct drm_display_mode *mode,
struct drm_display_mode *adjusted_mode)
{
struct drm_crtc *crtc = encoder->crtc;
struct intel_crtc *intel_crtc = to_intel_crtc(crtc);
struct intel_encoder *intel_encoder = to_intel_encoder(encoder);
int port = intel_ddi_get_encoder_port(intel_encoder);
int pipe = intel_crtc->pipe;
int type = intel_encoder->type;
DRM_DEBUG_KMS("Preparing DDI mode for Haswell on port %c, pipe %c\n",
port_name(port), pipe_name(pipe));
intel_crtc->eld_vld = false;
if (type == INTEL_OUTPUT_DISPLAYPORT || type == INTEL_OUTPUT_EDP) {
struct intel_dp *intel_dp = enc_to_intel_dp(encoder);
struct intel_digital_port *intel_dig_port =
enc_to_dig_port(encoder);
intel_dp->DP = intel_dig_port->port_reversal |
DDI_BUF_CTL_ENABLE | DDI_BUF_EMP_400MV_0DB_HSW;
switch (intel_dp->lane_count) {
case 1:
intel_dp->DP |= DDI_PORT_WIDTH_X1;
break;
case 2:
intel_dp->DP |= DDI_PORT_WIDTH_X2;
break;
case 4:
intel_dp->DP |= DDI_PORT_WIDTH_X4;
break;
default:
intel_dp->DP |= DDI_PORT_WIDTH_X4;
WARN(1, "Unexpected DP lane count %d\n",
intel_dp->lane_count);
break;
}
if (intel_dp->has_audio) {
DRM_DEBUG_DRIVER("DP audio on pipe %c on DDI\n",
pipe_name(intel_crtc->pipe));
/* write eld */
DRM_DEBUG_DRIVER("DP audio: write eld information\n");
intel_write_eld(encoder, adjusted_mode);
}
intel_dp_init_link_config(intel_dp);
} else if (type == INTEL_OUTPUT_HDMI) {
struct intel_hdmi *intel_hdmi = enc_to_intel_hdmi(encoder);
if (intel_hdmi->has_audio) {
/* Proper support for digital audio needs a new logic
* and a new set of registers, so we leave it for future
* patch bombing.
*/
DRM_DEBUG_DRIVER("HDMI audio on pipe %c on DDI\n",
pipe_name(intel_crtc->pipe));
/* write eld */
DRM_DEBUG_DRIVER("HDMI audio: write eld information\n");
intel_write_eld(encoder, adjusted_mode);
}
intel_hdmi->set_infoframes(encoder, adjusted_mode);
}
}