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drm/bridge: dw-hdmi-qp: Provide SPD InfoFrame

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The hardware is capable of sending Source Product Description (SPD)
InfoFrames, hence enable the missing support.

Signed-off-by: Cristian Ciocaltea <cristian.ciocaltea@collabora.com>
Reviewed-by: Maxime Ripard <mripard@kernel.org>
Reviewed-by: Daniel Stone <daniels@collabora.com>
Link: https://patch.msgid.link/20260129-dw-hdmi-qp-iframe-v2-2-0157ad05232c@collabora.com
Signed-off-by: Daniel Stone <daniels@collabora.com>
This commit is contained in:
Cristian Ciocaltea
2026-01-29 14:13:33 +02:00
committed by Daniel Stone
parent e54c6ac22a
commit 1df09ea64b
2 changed files with 29 additions and 1 deletions
Download Patch File Download Diff File Expand all files Collapse all files

29
drivers/gpu/drm/bridge/synopsys/dw-hdmi-qp.c
View File

@@ -986,6 +986,15 @@ static int dw_hdmi_qp_bridge_clear_hdr_drm_infoframe(struct drm_bridge *bridge)
return 0;
}
static int dw_hdmi_qp_bridge_clear_spd_infoframe(struct drm_bridge *bridge)
{
struct dw_hdmi_qp *hdmi = bridge->driver_private;
dw_hdmi_qp_mod(hdmi, 0, PKTSCHED_SPDI_TX_EN, PKTSCHED_PKT_EN);
return 0;
}
static int dw_hdmi_qp_bridge_clear_audio_infoframe(struct drm_bridge *bridge)
{
struct dw_hdmi_qp *hdmi = bridge->driver_private;
@@ -1061,6 +1070,21 @@ static int dw_hdmi_qp_bridge_write_hdr_drm_infoframe(struct drm_bridge *bridge,
return dw_hdmi_qp_config_drm_infoframe(hdmi, buffer, len);
}
static int dw_hdmi_qp_bridge_write_spd_infoframe(struct drm_bridge *bridge,
const u8 *buffer, size_t len)
{
struct dw_hdmi_qp *hdmi = bridge->driver_private;
dw_hdmi_qp_bridge_clear_spd_infoframe(bridge);
dw_hdmi_qp_write_infoframe(hdmi, buffer, len, PKT_SPDI_CONTENTS0);
dw_hdmi_qp_mod(hdmi, PKTSCHED_SPDI_TX_EN, PKTSCHED_SPDI_TX_EN,
PKTSCHED_PKT_EN);
return 0;
}
static int dw_hdmi_qp_bridge_write_audio_infoframe(struct drm_bridge *bridge,
const u8 *buffer, size_t len)
{
@@ -1259,6 +1283,8 @@ static const struct drm_bridge_funcs dw_hdmi_qp_bridge_funcs = {
.hdmi_write_hdmi_infoframe = dw_hdmi_qp_bridge_write_hdmi_infoframe,
.hdmi_clear_hdr_drm_infoframe = dw_hdmi_qp_bridge_clear_hdr_drm_infoframe,
.hdmi_write_hdr_drm_infoframe = dw_hdmi_qp_bridge_write_hdr_drm_infoframe,
.hdmi_clear_spd_infoframe = dw_hdmi_qp_bridge_clear_spd_infoframe,
.hdmi_write_spd_infoframe = dw_hdmi_qp_bridge_write_spd_infoframe,
.hdmi_clear_audio_infoframe = dw_hdmi_qp_bridge_clear_audio_infoframe,
.hdmi_write_audio_infoframe = dw_hdmi_qp_bridge_write_audio_infoframe,
.hdmi_audio_startup = dw_hdmi_qp_audio_enable,
@@ -1375,7 +1401,8 @@ struct dw_hdmi_qp *dw_hdmi_qp_bind(struct platform_device *pdev,
DRM_BRIDGE_OP_EDID |
DRM_BRIDGE_OP_HDMI |
DRM_BRIDGE_OP_HDMI_AUDIO |
DRM_BRIDGE_OP_HDMI_HDR_DRM_INFOFRAME;
DRM_BRIDGE_OP_HDMI_HDR_DRM_INFOFRAME |
DRM_BRIDGE_OP_HDMI_SPD_INFOFRAME;
if (!hdmi->no_hpd)
hdmi->bridge.ops |= DRM_BRIDGE_OP_HPD;
hdmi->bridge.of_node = pdev->dev.of_node;

1
drivers/gpu/drm/bridge/synopsys/dw-hdmi-qp.h
View File

@@ -206,6 +206,7 @@
#define PKTSCHED_PKT_EN 0xaa8
#define PKTSCHED_DRMI_TX_EN BIT(17)
#define PKTSCHED_AUDI_TX_EN BIT(15)
#define PKTSCHED_SPDI_TX_EN BIT(14)
#define PKTSCHED_AVI_TX_EN BIT(13)
#define PKTSCHED_VSI_TX_EN BIT(12)
#define PKTSCHED_EMP_CVTEM_TX_EN BIT(10)