diff options
| author | Rob Herring <robh@kernel.org> | 2017-03-22 08:26:06 -0500 |
|---|---|---|
| committer | Sean Paul <seanpaul@chromium.org> | 2017-04-06 17:00:27 -0400 |
| commit | 86418f90a4c1a0073db65d8a1e2bf94421117a60 (patch) | |
| tree | a82b9534e5f5c89ceeaa93abaad71da000c7f8d3 /drivers/gpu/drm/bridge/ti-tfp410.c | |
| parent | 1f2db3034c9f16ed918e34809167546f21d0fcb4 (diff) | |
| download | linux-86418f90a4c1a0073db65d8a1e2bf94421117a60.tar.bz2 | |
drm: convert drivers to use of_graph_get_remote_node
Convert drivers to use the new of_graph_get_remote_node() helper
instead of parsing the endpoint node and then getting the remote device
node. Now drivers can just specify the device node and which
port/endpoint and get back the connected remote device node. The details
of the graph binding are nicely abstracted into the core OF graph code.
This changes some error messages to debug messages (in the graph core).
Graph connections are often "no connects" depending on the particular
board, so we want to avoid spurious messages. Plus the kernel is not a
DT validator.
Signed-off-by: Rob Herring <robh@kernel.org>
Acked-by: Neil Armstrong <narmstrong@baylibre.com>
Tested-by: Liviu Dudau <liviu.dudau@arm.com>
Tested-by: Eric Anholt <eric@anholt.net>
Tested-by: Jyri Sarha <jsarha@ti.com>
Tested by: Archit Taneja <architt@codeaurora.org>
Signed-off-by: Sean Paul <seanpaul@chromium.org>
Diffstat (limited to 'drivers/gpu/drm/bridge/ti-tfp410.c')
| -rw-r--r-- | drivers/gpu/drm/bridge/ti-tfp410.c | 15 |
1 files changed, 5 insertions, 10 deletions
diff --git a/drivers/gpu/drm/bridge/ti-tfp410.c b/drivers/gpu/drm/bridge/ti-tfp410.c index 7d519b46aee4..eee4efda829e 100644 --- a/drivers/gpu/drm/bridge/ti-tfp410.c +++ b/drivers/gpu/drm/bridge/ti-tfp410.c @@ -165,18 +165,13 @@ static irqreturn_t tfp410_hpd_irq_thread(int irq, void *arg) static int tfp410_get_connector_properties(struct tfp410 *dvi) { - struct device_node *ep = NULL, *connector_node = NULL; - struct device_node *ddc_phandle = NULL; + struct device_node *connector_node, *ddc_phandle; int ret = 0; /* port@1 is the connector node */ - ep = of_graph_get_endpoint_by_regs(dvi->dev->of_node, 1, -1); - if (!ep) - goto fail; - - connector_node = of_graph_get_remote_port_parent(ep); + connector_node = of_graph_get_remote_node(dvi->dev->of_node, 1, -1); if (!connector_node) - goto fail; + return -ENODEV; dvi->hpd = fwnode_get_named_gpiod(&connector_node->fwnode, "hpd-gpios", 0, GPIOD_IN, "hpd"); @@ -199,10 +194,10 @@ static int tfp410_get_connector_properties(struct tfp410 *dvi) else ret = -EPROBE_DEFER; + of_node_put(ddc_phandle); + fail: - of_node_put(ep); of_node_put(connector_node); - of_node_put(ddc_phandle); return ret; } |