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Subject[PATCH v4 09/15] drm: bridge/dw_hdmi: enable audio support for No-CEA display resolutions
Date
If the monitor support audio, so we should support audio for it, even if
the display resolution is No-CEA mode.

Signed-off-by: Yakir Yang <ykk@rock-chips.com>
---
Changes in v4:
- Add hdmi audio support when monitor support audio

Changes in v3: None
Changes in v2:
- Enable audio support for No-CEA display mode

drivers/gpu/drm/bridge/dw_hdmi.c | 18 ++++++++++--------
1 file changed, 10 insertions(+), 8 deletions(-)

diff --git a/drivers/gpu/drm/bridge/dw_hdmi.c b/drivers/gpu/drm/bridge/dw_hdmi.c
index b34ae80..8894e48 100644
--- a/drivers/gpu/drm/bridge/dw_hdmi.c
+++ b/drivers/gpu/drm/bridge/dw_hdmi.c
@@ -98,6 +98,7 @@ struct hdmi_id {

struct hdmi_vmode {
bool mdvi;
+ bool has_audio;
bool mhsyncpolarity;
bool mvsyncpolarity;
bool minterlaced;
@@ -1267,13 +1268,10 @@ static int dw_hdmi_setup(struct dw_hdmi *hdmi, struct drm_display_mode *mode)

hdmi->vic = drm_match_cea_mode(mode);

- if (!hdmi->vic) {
+ if (!hdmi->vic)
dev_dbg(hdmi->dev, "Non-CEA mode used in HDMI\n");
- hdmi->hdmi_data.video_mode.mdvi = true;
- } else {
+ else
dev_dbg(hdmi->dev, "CEA mode used vic=%d\n", hdmi->vic);
- hdmi->hdmi_data.video_mode.mdvi = false;
- }

if ((hdmi->vic == 6) || (hdmi->vic == 7) ||
(hdmi->vic == 21) || (hdmi->vic == 22) ||
@@ -1319,10 +1317,10 @@ static int dw_hdmi_setup(struct dw_hdmi *hdmi, struct drm_display_mode *mode)
dw_hdmi_enable_video_path(hdmi);

/* not for DVI mode */
- if (hdmi->hdmi_data.video_mode.mdvi) {
- dev_dbg(hdmi->dev, "%s DVI mode\n", __func__);
+ if (!hdmi->hdmi_data.video_mode.has_audio) {
+ dev_info(hdmi->dev, "monitor does not support audio\n");
} else {
- dev_dbg(hdmi->dev, "%s CEA mode\n", __func__);
+ dev_dbg(hdmi->dev, "monitor support audio\n");

/* HDMI Initialization Step E - Configure audio */
hdmi_clk_regenerator_update_pixel_clock(hdmi);
@@ -1541,6 +1539,7 @@ static int dw_hdmi_connector_get_modes(struct drm_connector *connector)
{
struct dw_hdmi *hdmi = container_of(connector, struct dw_hdmi,
connector);
+ struct hdmi_vmode *vmode = &hdmi->hdmi_data.video_mode;
struct edid *edid;
int ret;

@@ -1552,6 +1551,9 @@ static int dw_hdmi_connector_get_modes(struct drm_connector *connector)
dev_dbg(hdmi->dev, "got edid: width[%d] x height[%d]\n",
edid->width_cm, edid->height_cm);

+ vmode->mdvi = !drm_detect_hdmi_monitor(edid);
+ vmode->has_audio = drm_detect_monitor_audio(edid);
+
drm_mode_connector_update_edid_property(connector, edid);
ret = drm_add_edid_modes(connector, edid);
kfree(edid);
--
2.1.2



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