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drm/bridge: dw-hdmi-qp: Support hdmi force output

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Support hdmi output specific resolution and color format
regardless of whether hdmi is connected.

Signed-off-by: Algea Cao <algea.cao@rock-chips.com>
Change-Id: I3f18aeb04427846e06b6a4397a4c6df77bbbcab2
This commit is contained in:
Algea Cao
2023-12-28 10:16:17 +08:00
committed by Tao Huang
parent 6ea5afc91a
commit 3710e830ff
1 changed files with 28 additions and 3 deletions
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31
drivers/gpu/drm/bridge/synopsys/dw-hdmi-qp.c
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@@ -275,7 +275,8 @@ struct dw_hdmi_qp {
bool allm_enable;
bool support_hdmi;
bool skip_connector;
int force_output;
bool force_kernel_output; /* force kernel hdmi output specific resolution */
int force_output; /* force hdmi/dvi output mode */
int vp_id;
int old_vp_id;
@@ -1677,6 +1678,9 @@ static bool dw_hdmi_support_scdc(struct dw_hdmi_qp *hdmi,
if (!hdmi->ddc)
return false;
if (hdmi->force_kernel_output)
return true;
/* Disable if SCDC is not supported, or if an HF-VSDB block is absent */
if (!display->hdmi.scdc.supported ||
!display->hdmi.scdc.scrambling.supported)
@@ -2126,7 +2130,7 @@ dw_hdmi_connector_detect(struct drm_connector *connector, bool force)
hdmi->force = DRM_FORCE_UNSPECIFIED;
mutex_unlock(&hdmi->mutex);
if (hdmi->panel)
if (hdmi->panel || hdmi->force_kernel_output)
return connector_status_connected;
if (hdmi->next_bridge && hdmi->next_bridge->ops & DRM_BRIDGE_OP_DETECT)
@@ -2264,6 +2268,21 @@ static int dw_hdmi_connector_get_modes(struct drm_connector *connector)
struct drm_property_blob *edid_blob_ptr = connector->edid_blob_ptr;
int i, ret = 0;
if (hdmi->force_kernel_output) {
mode = hdmi->plat_data->get_force_timing(data);
hdmi->support_hdmi = true;
hdmi->sink_is_hdmi = true;
hdmi->sink_has_audio = true;
mode = drm_mode_duplicate(connector->dev, mode);
drm_mode_debug_printmodeline(mode);
drm_mode_probed_add(connector, mode);
info->edid_hdmi_dc_modes = 0;
info->hdmi.y420_dc_modes = 0;
info->color_formats = 0;
return 1;
}
if (hdmi->plat_data->right && hdmi->plat_data->right->next_bridge) {
struct drm_bridge *bridge = hdmi->plat_data->right->next_bridge;
@@ -2724,7 +2743,7 @@ static int dw_hdmi_connector_atomic_check(struct drm_connector *connector,
drm_scdc_readb(hdmi->ddc, SCDC_TMDS_CONFIG, &val);
/* if plug out before hdmi bind, reset hdmi */
if (vmode->mtmdsclock >= 340000000 && vmode->mpixelclock <= 600000000 &&
!(val & SCDC_TMDS_BIT_CLOCK_RATIO_BY_40))
!(val & SCDC_TMDS_BIT_CLOCK_RATIO_BY_40) && !hdmi->force_kernel_output)
hdmi->logo_plug_out = true;
}
@@ -2925,6 +2944,9 @@ dw_hdmi_qp_bridge_mode_valid(struct drm_bridge *bridge,
struct dw_hdmi_qp *hdmi = bridge->driver_private;
const struct dw_hdmi_plat_data *pdata = hdmi->plat_data;
if (hdmi->force_kernel_output)
return MODE_OK;
if (mode->clock <= 25000)
return MODE_CLOCK_RANGE;
@@ -3754,6 +3776,9 @@ __dw_hdmi_probe(struct platform_device *pdev,
if (ret < 0)
goto err_ddc;
if (hdmi->plat_data->get_force_timing(hdmi->plat_data->phy_data))
hdmi->force_kernel_output = true;
hdmi_writel(hdmi, 0, MAINUNIT_0_INT_MASK_N);
hdmi_writel(hdmi, 0, MAINUNIT_1_INT_MASK_N);
hdmi_writel(hdmi, 428571429, TIMER_BASE_CONFIG0);