modify the driver to call the bridge->funcs of the next bridge
in the chain.
We assume that the bridge sitting next to ptn3460 is a bridge-panel.
Signed-off-by: Ajay Kumar <ajaykumar...@samsung.com>
---
drivers/gpu/drm/bridge/ptn3460.c | 21 +++++++++++++++++----
1 file changed, 17 insertions(+), 4 deletions(-)
diff --git a/drivers/gpu/drm/bridge/ptn3460.c b/drivers/gpu/drm/bridge/ptn3460.c
index b171901..969869a 100644
--- a/drivers/gpu/drm/bridge/ptn3460.c
+++ b/drivers/gpu/drm/bridge/ptn3460.c
@@ -126,6 +126,8 @@ static void ptn3460_pre_enable(struct drm_bridge *bridge)
gpio_set_value(ptn_bridge->gpio_rst_n, 1);
}
+ if (bridge->next_bridge)
+ bridge->next_bridge->funcs->pre_enable(bridge->next_bridge);
/*
* There's a bug in the PTN chip where it falsely asserts hotplug before
* it is fully functional. We're forced to wait for the maximum start up
@@ -142,6 +144,8 @@ static void ptn3460_pre_enable(struct drm_bridge *bridge)
static void ptn3460_enable(struct drm_bridge *bridge)
{
+ if (bridge->next_bridge)
+ bridge->next_bridge->funcs->enable(bridge->next_bridge);
}
static void ptn3460_disable(struct drm_bridge *bridge)
@@ -153,6 +157,11 @@ static void ptn3460_disable(struct drm_bridge *bridge)
ptn_bridge->enabled = false;
+ if (bridge->next_bridge) {
+ bridge->next_bridge->funcs->disable(bridge->next_bridge);
+ bridge->next_bridge->funcs->post_disable(bridge->next_bridge);
+ }
+
if (gpio_is_valid(ptn_bridge->gpio_rst_n))
gpio_set_value(ptn_bridge->gpio_rst_n, 1);
@@ -197,7 +206,10 @@ int ptn3460_get_modes(struct drm_connector *connector)
return drm_add_edid_modes(connector, ptn_bridge->edid);
power_off = !ptn_bridge->enabled;
- ptn3460_pre_enable(ptn_bridge->bridge);
+ if (power_off) {
+ ptn3460_pre_enable(ptn_bridge->bridge);
+ ptn3460_enable(ptn_bridge->bridge);
+ }
edid = kmalloc(EDID_LENGTH, GFP_KERNEL);
if (!edid) {
@@ -219,8 +231,10 @@ int ptn3460_get_modes(struct drm_connector *connector)
num_modes = drm_add_edid_modes(connector, ptn_bridge->edid);
out:
- if (power_off)
+ if (power_off) {
ptn3460_disable(ptn_bridge->bridge);
+ ptn3460_post_disable(ptn_bridge->bridge);
+ }
return num_modes;
}
@@ -318,14 +332,13 @@ int ptn3460_init(struct drm_device *dev, struct
drm_encoder *encoder,
goto err;
}
- ret = drm_bridge_init(dev, bridge, &ptn3460_bridge_funcs);
+ ret = drm_bridge_init(dev, bridge, encoder, &ptn3460_bridge_funcs);
if (ret) {
DRM_ERROR("Failed to initialize bridge with drm\n");
goto err;
}
bridge->driver_private = ptn_bridge;
- encoder->bridge = bridge;
ret = drm_connector_init(dev, &ptn_bridge->connector,
&ptn3460_connector_funcs, DRM_MODE_CONNECTOR_LVDS);
--
1.8.1.2
--
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