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drm/exynos/dsi: use of_graph_get_endpoint_by_regs helper 

This allows to remove the local of_graph_get_port_by_reg(),
of_graph_get_endpoint_by_reg(), and of_get_child_by_name_reg()
functions.

Signed-off-by: Philipp Zabel <p.zabel@pengutronix.de>
Reviewed-by: Andrzej Hajda <a.hajda@samsung.com>
Reviewed-by: Inki Dae <inki.dae@samsung.com>
This commit is contained in:
Philipp Zabel 2016-05-03 15:47:25 +02:00 committed by Inki Dae
parent fb38b1f608
commit 17ef49bd23
1 changed files with 3 additions and 54 deletions
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57
drivers/gpu/drm/exynos/exynos_drm_dsi.c
View File

@ -1632,50 +1632,6 @@ static const struct drm_encoder_funcs exynos_dsi_encoder_funcs = {
MODULE_DEVICE_TABLE(of, exynos_dsi_of_match);
/* of_* functions will be removed after merge of of_graph patches */
static struct device_node *
of_get_child_by_name_reg(struct device_node *parent, const char *name, u32 reg)
{
struct device_node *np;
for_each_child_of_node(parent, np) {
u32 r;
if (!np->name || of_node_cmp(np->name, name))
continue;
if (of_property_read_u32(np, "reg", &r) < 0)
r = 0;
if (reg == r)
break;
}
return np;
}
static struct device_node *of_graph_get_port_by_reg(struct device_node *parent,
u32 reg)
{
struct device_node *ports, *port;
ports = of_get_child_by_name(parent, "ports");
if (ports)
parent = ports;
port = of_get_child_by_name_reg(parent, "port", reg);
of_node_put(ports);
return port;
}
static struct device_node *
of_graph_get_endpoint_by_reg(struct device_node *port, u32 reg)
{
return of_get_child_by_name_reg(port, "endpoint", reg);
}
static int exynos_dsi_of_read_u32(const struct device_node *np,
const char *propname, u32 *out_value)
{
@ -1697,7 +1653,7 @@ static int exynos_dsi_parse_dt(struct exynos_dsi *dsi)
{
struct device *dev = dsi->dev;
struct device_node *node = dev->of_node;
struct device_node *port, *ep;
struct device_node *ep;
int ret;
ret = exynos_dsi_of_read_u32(node, "samsung,pll-clock-frequency",
@ -1705,16 +1661,9 @@ static int exynos_dsi_parse_dt(struct exynos_dsi *dsi)
if (ret < 0)
return ret;
port = of_graph_get_port_by_reg(node, DSI_PORT_OUT);
if (!port) {
dev_err(dev, "no output port specified\n");
return -EINVAL;
}
ep = of_graph_get_endpoint_by_reg(port, 0);
of_node_put(port);
ep = of_graph_get_endpoint_by_regs(node, DSI_PORT_OUT, 0);
if (!ep) {
dev_err(dev, "no endpoint specified in output port\n");
dev_err(dev, "no output port with endpoint specified\n");
return -EINVAL;
}