#define HDMI_14_MAX_TMDS_CLK (340 * 1000 * 1000)
+static const char * const output_format_str[] = {
+ [VC4_HDMI_OUTPUT_RGB] = "RGB",
+ [VC4_HDMI_OUTPUT_YUV420] = "YUV 4:2:0",
+ [VC4_HDMI_OUTPUT_YUV422] = "YUV 4:2:2",
+ [VC4_HDMI_OUTPUT_YUV444] = "YUV 4:4:4",
+};
+
+static const char *vc4_hdmi_output_fmt_str(enum vc4_hdmi_output_format fmt)
+{
+ if (fmt >= ARRAY_SIZE(output_format_str))
+ return "invalid";
+
+ return output_format_str[fmt];
+}
+
static unsigned long long
vc4_hdmi_encoder_compute_mode_clock(const struct drm_display_mode *mode,
- unsigned int bpc);
+ unsigned int bpc, enum vc4_hdmi_output_format fmt);
static bool vc4_hdmi_mode_needs_scrambling(const struct drm_display_mode *mode,
- unsigned int bpc)
+ unsigned int bpc,
+ enum vc4_hdmi_output_format fmt)
{
- unsigned long long clock = vc4_hdmi_encoder_compute_mode_clock(mode, bpc);
+ unsigned long long clock = vc4_hdmi_encoder_compute_mode_clock(mode, bpc, fmt);
return clock > HDMI_14_MAX_TMDS_CLK;
}
struct drm_display_mode *mode;
list_for_each_entry(mode, &connector->probed_modes, head) {
- if (vc4_hdmi_mode_needs_scrambling(mode, 8)) {
+ if (vc4_hdmi_mode_needs_scrambling(mode, 8, VC4_HDMI_OUTPUT_RGB)) {
drm_warn_once(drm, "The core clock cannot reach frequencies high enough to support 4k @ 60Hz.");
drm_warn_once(drm, "Please change your config.txt file to add hdmi_enable_4kp60.");
}
new_state->base.max_bpc = 8;
new_state->base.max_requested_bpc = 8;
+ new_state->output_format = VC4_HDMI_OUTPUT_RGB;
drm_atomic_helper_connector_tv_reset(connector);
}
new_state->tmds_char_rate = vc4_state->tmds_char_rate;
new_state->output_bpc = vc4_state->output_bpc;
+ new_state->output_format = vc4_state->output_format;
__drm_atomic_helper_connector_duplicate_state(connector, &new_state->base);
return &new_state->base;
DRM_ERROR("Failed to wait for infoframe to start: %d\n", ret);
}
+static void vc4_hdmi_avi_infoframe_colorspace(struct hdmi_avi_infoframe *frame,
+ enum vc4_hdmi_output_format fmt)
+{
+ switch (fmt) {
+ case VC4_HDMI_OUTPUT_RGB:
+ frame->colorspace = HDMI_COLORSPACE_RGB;
+ break;
+
+ case VC4_HDMI_OUTPUT_YUV420:
+ frame->colorspace = HDMI_COLORSPACE_YUV420;
+ break;
+
+ case VC4_HDMI_OUTPUT_YUV422:
+ frame->colorspace = HDMI_COLORSPACE_YUV422;
+ break;
+
+ case VC4_HDMI_OUTPUT_YUV444:
+ frame->colorspace = HDMI_COLORSPACE_YUV444;
+ break;
+
+ default:
+ break;
+ }
+}
+
static void vc4_hdmi_set_avi_infoframe(struct drm_encoder *encoder)
{
struct vc4_hdmi *vc4_hdmi = encoder_to_vc4_hdmi(encoder);
struct drm_connector *connector = &vc4_hdmi->connector;
struct drm_connector_state *cstate = connector->state;
+ struct vc4_hdmi_connector_state *vc4_state =
+ conn_state_to_vc4_hdmi_conn_state(cstate);
const struct drm_display_mode *mode = &vc4_hdmi->saved_adjusted_mode;
union hdmi_infoframe frame;
int ret;
HDMI_QUANTIZATION_RANGE_FULL :
HDMI_QUANTIZATION_RANGE_LIMITED);
drm_hdmi_avi_infoframe_colorimetry(&frame.avi, cstate);
+ vc4_hdmi_avi_infoframe_colorspace(&frame.avi, vc4_state->output_format);
drm_hdmi_avi_infoframe_bars(&frame.avi, cstate);
vc4_hdmi_write_infoframe(encoder, &frame);
if (!vc4_hdmi_supports_scrambling(encoder, mode))
return;
- if (!vc4_hdmi_mode_needs_scrambling(mode, vc4_hdmi->output_bpc))
+ if (!vc4_hdmi_mode_needs_scrambling(mode,
+ vc4_hdmi->output_bpc,
+ vc4_hdmi->output_format))
return;
drm_scdc_set_high_tmds_clock_ratio(vc4_hdmi->ddc, true);
{ 0x0000, 0x0000, 0x1b80, 0x0400 },
};
+/*
+ * Conversion between Full Range RGB and Full Range YUV422 using the
+ * BT.709 Colorspace
+ *
+ *
+ * [ 0.181906 0.611804 0.061758 16 ]
+ * [ -0.100268 -0.337232 0.437500 128 ]
+ * [ 0.437500 -0.397386 -0.040114 128 ]
+ *
+ * Matrix is signed 2p13 fixed point, with signed 9p6 offsets
+ */
+static const u16 vc5_hdmi_csc_full_rgb_to_limited_yuv422_bt709[3][4] = {
+ { 0x05d2, 0x1394, 0x01fa, 0x0400 },
+ { 0xfccc, 0xf536, 0x0e00, 0x2000 },
+ { 0x0e00, 0xf34a, 0xfeb8, 0x2000 },
+};
+
+/*
+ * Conversion between Full Range RGB and Full Range YUV444 using the
+ * BT.709 Colorspace
+ *
+ * [ -0.100268 -0.337232 0.437500 128 ]
+ * [ 0.437500 -0.397386 -0.040114 128 ]
+ * [ 0.181906 0.611804 0.061758 16 ]
+ *
+ * Matrix is signed 2p13 fixed point, with signed 9p6 offsets
+ */
+static const u16 vc5_hdmi_csc_full_rgb_to_limited_yuv444_bt709[3][4] = {
+ { 0xfccc, 0xf536, 0x0e00, 0x2000 },
+ { 0x0e00, 0xf34a, 0xfeb8, 0x2000 },
+ { 0x05d2, 0x1394, 0x01fa, 0x0400 },
+};
+
static void vc5_hdmi_set_csc_coeffs(struct vc4_hdmi *vc4_hdmi,
const u16 coeffs[3][4])
{
struct drm_connector_state *state,
const struct drm_display_mode *mode)
{
+ struct vc4_hdmi_connector_state *vc4_state =
+ conn_state_to_vc4_hdmi_conn_state(state);
unsigned long flags;
+ u32 if_cfg = 0;
+ u32 if_xbar = 0x543210;
+ u32 csc_chan_ctl = 0;
u32 csc_ctl = VC5_MT_CP_CSC_CTL_ENABLE | VC4_SET_FIELD(VC4_HD_CSC_CTL_MODE_CUSTOM,
VC5_MT_CP_CSC_CTL_MODE);
spin_lock_irqsave(&vc4_hdmi->hw_lock, flags);
- HDMI_WRITE(HDMI_VEC_INTERFACE_XBAR, 0x354021);
+ switch (vc4_state->output_format) {
+ case VC4_HDMI_OUTPUT_YUV444:
+ vc5_hdmi_set_csc_coeffs(vc4_hdmi, vc5_hdmi_csc_full_rgb_to_limited_yuv444_bt709);
+ break;
- if (!vc4_hdmi_is_full_range_rgb(vc4_hdmi, mode))
- vc5_hdmi_set_csc_coeffs(vc4_hdmi, vc5_hdmi_csc_full_rgb_to_limited_rgb);
- else
- vc5_hdmi_set_csc_coeffs(vc4_hdmi, vc5_hdmi_csc_full_rgb_unity);
+ case VC4_HDMI_OUTPUT_YUV422:
+ csc_ctl |= VC4_SET_FIELD(VC5_MT_CP_CSC_CTL_FILTER_MODE_444_TO_422_STANDARD,
+ VC5_MT_CP_CSC_CTL_FILTER_MODE_444_TO_422) |
+ VC5_MT_CP_CSC_CTL_USE_444_TO_422 |
+ VC5_MT_CP_CSC_CTL_USE_RNG_SUPPRESSION;
+
+ csc_chan_ctl |= VC4_SET_FIELD(VC5_MT_CP_CHANNEL_CTL_OUTPUT_REMAP_LEGACY_STYLE,
+ VC5_MT_CP_CHANNEL_CTL_OUTPUT_REMAP);
+
+ if_cfg |= VC4_SET_FIELD(VC5_DVP_HT_VEC_INTERFACE_CFG_SEL_422_FORMAT_422_LEGACY,
+ VC5_DVP_HT_VEC_INTERFACE_CFG_SEL_422);
+
+ vc5_hdmi_set_csc_coeffs(vc4_hdmi, vc5_hdmi_csc_full_rgb_to_limited_yuv422_bt709);
+ break;
+
+ case VC4_HDMI_OUTPUT_RGB:
+ if_xbar = 0x354021;
+ if (!vc4_hdmi_is_full_range_rgb(vc4_hdmi, mode))
+ vc5_hdmi_set_csc_coeffs(vc4_hdmi, vc5_hdmi_csc_full_rgb_to_limited_rgb);
+ else
+ vc5_hdmi_set_csc_coeffs(vc4_hdmi, vc5_hdmi_csc_full_rgb_unity);
+ break;
+
+ default:
+ break;
+ }
+
+ HDMI_WRITE(HDMI_VEC_INTERFACE_CFG, if_cfg);
+ HDMI_WRITE(HDMI_VEC_INTERFACE_XBAR, if_xbar);
+ HDMI_WRITE(HDMI_CSC_CHANNEL_CTL, csc_chan_ctl);
HDMI_WRITE(HDMI_CSC_CTL, csc_ctl);
spin_unlock_irqrestore(&vc4_hdmi->hw_lock, flags);
break;
}
+ /*
+ * YCC422 is always 36-bit and not considered deep colour so
+ * doesn't signal in GCP.
+ */
+ if (vc4_state->output_format == VC4_HDMI_OUTPUT_YUV422) {
+ gcp = 4;
+ gcp_en = false;
+ }
+
reg = HDMI_READ(HDMI_DEEP_COLOR_CONFIG_1);
reg &= ~(VC5_HDMI_DEEP_COLOR_CONFIG_1_INIT_PACK_PHASE_MASK |
VC5_HDMI_DEEP_COLOR_CONFIG_1_COLOR_DEPTH_MASK);
drm_mode_copy(&vc4_hdmi->saved_adjusted_mode,
&crtc_state->adjusted_mode);
vc4_hdmi->output_bpc = vc4_state->output_bpc;
+ vc4_hdmi->output_format = vc4_state->output_format;
mutex_unlock(&vc4_hdmi->mutex);
}
+static bool
+vc4_hdmi_sink_supports_format_bpc(const struct vc4_hdmi *vc4_hdmi,
+ const struct drm_display_info *info,
+ const struct drm_display_mode *mode,
+ unsigned int format, unsigned int bpc)
+{
+ struct drm_device *dev = vc4_hdmi->connector.dev;
+ u8 vic = drm_match_cea_mode(mode);
+
+ if (vic == 1 && bpc != 8) {
+ drm_dbg(dev, "VIC1 requires a bpc of 8, got %u\n", bpc);
+ return false;
+ }
+
+ if (!info->is_hdmi &&
+ (format != VC4_HDMI_OUTPUT_RGB || bpc != 8)) {
+ drm_dbg(dev, "DVI Monitors require an RGB output at 8 bpc\n");
+ return false;
+ }
+
+ switch (format) {
+ case VC4_HDMI_OUTPUT_RGB:
+ drm_dbg(dev, "RGB Format, checking the constraints.\n");
+
+ if (!(info->color_formats & DRM_COLOR_FORMAT_RGB444))
+ return false;
+
+ if (bpc == 10 && !(info->edid_hdmi_rgb444_dc_modes & DRM_EDID_HDMI_DC_30)) {
+ drm_dbg(dev, "10 BPC but sink doesn't support Deep Color 30.\n");
+ return false;
+ }
+
+ if (bpc == 12 && !(info->edid_hdmi_rgb444_dc_modes & DRM_EDID_HDMI_DC_36)) {
+ drm_dbg(dev, "12 BPC but sink doesn't support Deep Color 36.\n");
+ return false;
+ }
+
+ drm_dbg(dev, "RGB format supported in that configuration.\n");
+
+ return true;
+
+ case VC4_HDMI_OUTPUT_YUV422:
+ drm_dbg(dev, "YUV422 format, checking the constraints.\n");
+
+ if (!(info->color_formats & DRM_COLOR_FORMAT_YCBCR422)) {
+ drm_dbg(dev, "Sink doesn't support YUV422.\n");
+ return false;
+ }
+
+ if (bpc != 12) {
+ drm_dbg(dev, "YUV422 only supports 12 bpc.\n");
+ return false;
+ }
+
+ drm_dbg(dev, "YUV422 format supported in that configuration.\n");
+
+ return true;
+
+ case VC4_HDMI_OUTPUT_YUV444:
+ drm_dbg(dev, "YUV444 format, checking the constraints.\n");
+
+ if (!(info->color_formats & DRM_COLOR_FORMAT_YCBCR444)) {
+ drm_dbg(dev, "Sink doesn't support YUV444.\n");
+ return false;
+ }
+
+ if (bpc == 10 && !(info->edid_hdmi_ycbcr444_dc_modes & DRM_EDID_HDMI_DC_30)) {
+ drm_dbg(dev, "10 BPC but sink doesn't support Deep Color 30.\n");
+ return false;
+ }
+
+ if (bpc == 12 && !(info->edid_hdmi_ycbcr444_dc_modes & DRM_EDID_HDMI_DC_36)) {
+ drm_dbg(dev, "12 BPC but sink doesn't support Deep Color 36.\n");
+ return false;
+ }
+
+ drm_dbg(dev, "YUV444 format supported in that configuration.\n");
+
+ return true;
+ }
+
+ return false;
+}
+
static enum drm_mode_status
vc4_hdmi_encoder_clock_valid(const struct vc4_hdmi *vc4_hdmi,
unsigned long long clock)
static unsigned long long
vc4_hdmi_encoder_compute_mode_clock(const struct drm_display_mode *mode,
- unsigned int bpc)
+ unsigned int bpc,
+ enum vc4_hdmi_output_format fmt)
{
unsigned long long clock = mode->clock * 1000;
if (mode->flags & DRM_MODE_FLAG_DBLCLK)
clock = clock * 2;
+ if (fmt == VC4_HDMI_OUTPUT_YUV422)
+ bpc = 8;
+
clock = clock * bpc;
do_div(clock, 8);
vc4_hdmi_encoder_compute_clock(const struct vc4_hdmi *vc4_hdmi,
struct vc4_hdmi_connector_state *vc4_state,
const struct drm_display_mode *mode,
- unsigned int bpc)
+ unsigned int bpc, unsigned int fmt)
{
unsigned long long clock;
- clock = vc4_hdmi_encoder_compute_mode_clock(mode, bpc);
+ clock = vc4_hdmi_encoder_compute_mode_clock(mode, bpc, fmt);
if (vc4_hdmi_encoder_clock_valid(vc4_hdmi, clock) != MODE_OK)
return -EINVAL;
return 0;
}
+static int
+vc4_hdmi_encoder_compute_format(const struct vc4_hdmi *vc4_hdmi,
+ struct vc4_hdmi_connector_state *vc4_state,
+ const struct drm_display_mode *mode,
+ unsigned int bpc)
+{
+ struct drm_device *dev = vc4_hdmi->connector.dev;
+ const struct drm_connector *connector = &vc4_hdmi->connector;
+ const struct drm_display_info *info = &connector->display_info;
+ unsigned int format;
+
+ drm_dbg(dev, "Trying with an RGB output\n");
+
+ format = VC4_HDMI_OUTPUT_RGB;
+ if (vc4_hdmi_sink_supports_format_bpc(vc4_hdmi, info, mode, format, bpc)) {
+ int ret;
+
+ ret = vc4_hdmi_encoder_compute_clock(vc4_hdmi, vc4_state,
+ mode, bpc, format);
+ if (!ret) {
+ vc4_state->output_format = format;
+ return 0;
+ }
+ }
+
+ drm_dbg(dev, "Failed, Trying with an YUV422 output\n");
+
+ format = VC4_HDMI_OUTPUT_YUV422;
+ if (vc4_hdmi_sink_supports_format_bpc(vc4_hdmi, info, mode, format, bpc)) {
+ int ret;
+
+ ret = vc4_hdmi_encoder_compute_clock(vc4_hdmi, vc4_state,
+ mode, bpc, format);
+ if (!ret) {
+ vc4_state->output_format = format;
+ return 0;
+ }
+ }
+
+ drm_dbg(dev, "Failed. No Format Supported for that bpc count.\n");
+
+ return -EINVAL;
+}
+
static int
vc4_hdmi_encoder_compute_config(const struct vc4_hdmi *vc4_hdmi,
struct vc4_hdmi_connector_state *vc4_state,
const struct drm_display_mode *mode)
{
+ struct drm_device *dev = vc4_hdmi->connector.dev;
struct drm_connector_state *conn_state = &vc4_state->base;
unsigned int max_bpc = clamp_t(unsigned int, conn_state->max_bpc, 8, 12);
unsigned int bpc;
for (bpc = max_bpc; bpc >= 8; bpc -= 2) {
drm_dbg(dev, "Trying with a %d bpc output\n", bpc);
- ret = vc4_hdmi_encoder_compute_clock(vc4_hdmi, vc4_state,
- mode, bpc);
+ ret = vc4_hdmi_encoder_compute_format(vc4_hdmi, vc4_state,
+ mode, bpc);
if (ret)
continue;
vc4_state->output_bpc = bpc;
drm_dbg(dev,
- "Mode %ux%u @ %uHz: Found configuration: bpc: %u, clock: %llu\n",
+ "Mode %ux%u @ %uHz: Found configuration: bpc: %u, fmt: %s, clock: %llu\n",
mode->hdisplay, mode->vdisplay, drm_mode_vrefresh(mode),
vc4_state->output_bpc,
+ vc4_hdmi_output_fmt_str(vc4_state->output_format),
vc4_state->tmds_char_rate);
break;
projects / kernel.git / commitdiff