Release 4.11 drivers/gpu/drm/omapdrm/dss/dss-of.c
/*
* Copyright (C) 2013 Texas Instruments
* Author: Tomi Valkeinen <tomi.valkeinen@ti.com>
*
* This program is free software; you can redistribute it and/or modify it
* under the terms of the GNU General Public License version 2 as published by
* the Free Software Foundation.
*
* This program is distributed in the hope that it will be useful, but WITHOUT
* ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
* FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License for
* more details.
*/
#include <linux/device.h>
#include <linux/err.h>
#include <linux/module.h>
#include <linux/of.h>
#include <linux/seq_file.h>
#include "omapdss.h"
#include "dss.h"
struct device_node *
omapdss_of_get_next_port(const struct device_node *parent,
struct device_node *prev)
{
struct device_node *port = NULL;
if (!parent)
return NULL;
if (!prev) {
struct device_node *ports;
/*
* It's the first call, we have to find a port subnode
* within this node or within an optional 'ports' node.
*/
ports = of_get_child_by_name(parent, "ports");
if (ports)
parent = ports;
port = of_get_child_by_name(parent, "port");
/* release the 'ports' node */
of_node_put(ports);
} else {
struct device_node *ports;
ports = of_get_parent(prev);
if (!ports)
return NULL;
do {
port = of_get_next_child(ports, prev);
if (!port) {
of_node_put(ports);
return NULL;
}
prev = port;
} while (of_node_cmp(port->name, "port") != 0);
of_node_put(ports);
}
return port;
}
Contributors
| Person | Tokens | Prop | Commits | CommitProp |
| Tomi Valkeinen | 149 | 96.75% | 1 | 50.00% |
| Jyri Sarha | 5 | 3.25% | 1 | 50.00% |
| Total | 154 | 100.00% | 2 | 100.00% |
EXPORT_SYMBOL_GPL(omapdss_of_get_next_port);
struct device_node *
omapdss_of_get_next_endpoint(const struct device_node *parent,
struct device_node *prev)
{
struct device_node *ep = NULL;
if (!parent)
return NULL;
do {
ep = of_get_next_child(parent, prev);
if (!ep)
return NULL;
prev = ep;
} while (of_node_cmp(ep->name, "endpoint") != 0);
return ep;
}
Contributors
| Person | Tokens | Prop | Commits | CommitProp |
| Tomi Valkeinen | 74 | 100.00% | 1 | 100.00% |
| Total | 74 | 100.00% | 1 | 100.00% |
EXPORT_SYMBOL_GPL(omapdss_of_get_next_endpoint);
struct device_node *dss_of_port_get_parent_device(struct device_node *port)
{
struct device_node *np;
int i;
if (!port)
return NULL;
np = of_get_parent(port);
for (i = 0; i < 2 && np; ++i) {
struct property *prop;
prop = of_find_property(np, "compatible", NULL);
if (prop)
return np;
np = of_get_next_parent(np);
}
return NULL;
}
Contributors
| Person | Tokens | Prop | Commits | CommitProp |
| Tomi Valkeinen | 79 | 92.94% | 1 | 33.33% |
| Archit Taneja | 5 | 5.88% | 1 | 33.33% |
| Jyri Sarha | 1 | 1.18% | 1 | 33.33% |
| Total | 85 | 100.00% | 3 | 100.00% |
u32 dss_of_port_get_port_number(struct device_node *port)
{
int r;
u32 reg;
r = of_property_read_u32(port, "reg", ®);
if (r)
reg = 0;
return reg;
}
Contributors
| Person | Tokens | Prop | Commits | CommitProp |
| Archit Taneja | 39 | 100.00% | 1 | 100.00% |
| Total | 39 | 100.00% | 1 | 100.00% |
static struct device_node *omapdss_of_get_remote_port(const struct device_node *node)
{
struct device_node *np;
np = of_parse_phandle(node, "remote-endpoint", 0);
if (!np)
return NULL;
np = of_get_next_parent(np);
return np;
}
Contributors
| Person | Tokens | Prop | Commits | CommitProp |
| Archit Taneja | 45 | 93.75% | 1 | 33.33% |
| Peter Chen | 3 | 6.25% | 2 | 66.67% |
| Total | 48 | 100.00% | 3 | 100.00% |
struct device_node *
omapdss_of_get_first_endpoint(const struct device_node *parent)
{
struct device_node *port, *ep;
port = omapdss_of_get_next_port(parent, NULL);
if (!port)
return NULL;
ep = omapdss_of_get_next_endpoint(port, NULL);
of_node_put(port);
return ep;
}
Contributors
| Person | Tokens | Prop | Commits | CommitProp |
| Tomi Valkeinen | 55 | 100.00% | 1 | 100.00% |
| Total | 55 | 100.00% | 1 | 100.00% |
EXPORT_SYMBOL_GPL(omapdss_of_get_first_endpoint);
struct omap_dss_device *
omapdss_of_find_source_for_first_ep(struct device_node *node)
{
struct device_node *ep;
struct device_node *src_port;
struct omap_dss_device *src;
ep = omapdss_of_get_first_endpoint(node);
if (!ep)
return ERR_PTR(-EINVAL);
src_port = omapdss_of_get_remote_port(ep);
if (!src_port) {
of_node_put(ep);
return ERR_PTR(-EINVAL);
}
of_node_put(ep);
src = omap_dss_find_output_by_port_node(src_port);
of_node_put(src_port);
return src ? src : ERR_PTR(-EPROBE_DEFER);
}
Contributors
| Person | Tokens | Prop | Commits | CommitProp |
| Tomi Valkeinen | 78 | 78.00% | 1 | 50.00% |
| Archit Taneja | 22 | 22.00% | 1 | 50.00% |
| Total | 100 | 100.00% | 2 | 100.00% |
EXPORT_SYMBOL_GPL(omapdss_of_find_source_for_first_ep);
Overall Contributors
| Person | Tokens | Prop | Commits | CommitProp |
| Tomi Valkeinen | 473 | 79.23% | 1 | 14.29% |
| Archit Taneja | 114 | 19.10% | 1 | 14.29% |
| Jyri Sarha | 6 | 1.01% | 2 | 28.57% |
| Peter Chen | 3 | 0.50% | 2 | 28.57% |
| Peter Ujfalusi | 1 | 0.17% | 1 | 14.29% |
| Total | 597 | 100.00% | 7 | 100.00% |
Information contained on this website is for historical information purposes only and does not indicate or represent copyright ownership.