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drm/bridge: tc358767: add detect bridge operation

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Prepare the bridge driver for chained operation by adding
support for the detect operation.

v3:
  - Fix code to make it readable (Laurent)

v2:
  - Do not announce detect operation if there is no hpd pin (Laurent)

Signed-off-by: Sam Ravnborg <sam@ravnborg.org>
Reviewed-by: Laurent Pinchart <laurent.pinchart@ideasonboard.com>
Cc: Andrzej Hajda <a.hajda@samsung.com>
Cc: Neil Armstrong <narmstrong@baylibre.com>
Cc: Laurent Pinchart <Laurent.pinchart@ideasonboard.com>
Cc: Jonas Karlman <jonas@kwiboo.se>
Cc: Jernej Skrabec <jernej.skrabec@siol.net>
Link: https://patchwork.freedesktop.org/patch/msgid/20200727170320.959777-2-sam@ravnborg.org
This commit is contained in:
Sam Ravnborg 2020-07-27 19:03:16 +02:00
parent a8ef18d7dd
commit 136d73a8c8
1 changed files with 20 additions and 10 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

30
drivers/gpu/drm/bridge/tc358767.c
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@ -1369,21 +1369,13 @@ static const struct drm_connector_helper_funcs tc_connector_helper_funcs = {
.get_modes = tc_connector_get_modes,
};
static enum drm_connector_status tc_connector_detect(struct drm_connector *connector,
bool force)
static enum drm_connector_status tc_bridge_detect(struct drm_bridge *bridge)
{
struct tc_data *tc = connector_to_tc(connector);
struct tc_data *tc = bridge_to_tc(bridge);
bool conn;
u32 val;
int ret;
if (tc->hpd_pin < 0) {
if (tc->panel)
return connector_status_connected;
else
return connector_status_unknown;
}
ret = regmap_read(tc->regmap, GPIOI, &val);
if (ret)
return connector_status_unknown;
@ -1396,6 +1388,20 @@ static enum drm_connector_status tc_connector_detect(struct drm_connector *conne
return connector_status_disconnected;
}
static enum drm_connector_status
tc_connector_detect(struct drm_connector *connector, bool force)
{
struct tc_data *tc = connector_to_tc(connector);
if (tc->hpd_pin >= 0)
return tc_bridge_detect(&tc->bridge);
if (tc->panel)
return connector_status_connected;
else
return connector_status_unknown;
}
static const struct drm_connector_funcs tc_connector_funcs = {
.detect = tc_connector_detect,
.fill_modes = drm_helper_probe_single_connector_modes,
@ -1458,6 +1464,7 @@ static const struct drm_bridge_funcs tc_bridge_funcs = {
.disable = tc_bridge_disable,
.post_disable = tc_bridge_post_disable,
.mode_fixup = tc_bridge_mode_fixup,
.detect = tc_bridge_detect,
};
static bool tc_readable_reg(struct device *dev, unsigned int reg)
@ -1680,6 +1687,9 @@ static int tc_probe(struct i2c_client *client, const struct i2c_device_id *id)
return ret;
tc->bridge.funcs = &tc_bridge_funcs;
if (tc->hpd_pin >= 0)
tc->bridge.ops |= DRM_BRIDGE_OP_DETECT;
tc->bridge.of_node = dev->of_node;
drm_bridge_add(&tc->bridge);