Add support for writing the SPD infoframe to the TDA998x. Identify us
as "Generic" vendor "PC" product, and as "PC general" source device
information.
Signed-off-by: Russell King <rmk+ker...@armlinux.org.uk>
---
drivers/gpu/drm/i2c/tda998x_drv.c | 18 ++++++++++++++++++
1 file changed, 18 insertions(+)
diff --git a/drivers/gpu/drm/i2c/tda998x_drv.c
b/drivers/gpu/drm/i2c/tda998x_drv.c
index c399a7b73e2b..dad7396ebe2b 100644
--- a/drivers/gpu/drm/i2c/tda998x_drv.c
+++ b/drivers/gpu/drm/i2c/tda998x_drv.c
@@ -845,6 +845,23 @@ static int tda998x_write_aif(struct tda998x_priv *priv,
return 0;
}
+static void tda998x_write_spd(struct tda998x_priv *priv)
+{
+ union hdmi_infoframe frame;
+ int ret;
+
+ ret = hdmi_spd_infoframe_init(&frame.spd, "Generic", "PC");
+ if (ret < 0) {
+ dev_err(&priv->hdmi->dev, "failed to fill SPD infoframe: %d\n",
+ ret);
+ return;
+ }
+
+ frame.spd.sdi = HDMI_SPD_SDI_PC;
+
+ tda998x_write_if(priv, DIP_IF_FLAGS_IF3, REG_IF3_HB0, &frame);
+}
+
static void
tda998x_write_avi(struct tda998x_priv *priv, const struct drm_display_mode
*mode)
{
@@ -1554,6 +1571,7 @@ static void tda998x_bridge_mode_set(struct drm_bridge
*bridge,
reg_set(priv, REG_TX33, TX33_HDMI);
tda998x_write_avi(priv, adjusted_mode);
+ tda998x_write_spd(priv);
if (priv->audio_params.format != AFMT_UNUSED &&
priv->sink_has_audio)
--
2.7.4
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