cregit-Linux how code gets into the kernel

Release 4.11 drivers/video/fbdev/omap2/omapfb/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 <video/omapfb_dss.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; }

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Tomi Valkeinen154100.00%1100.00%
Total154100.00%1100.00%

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

PersonTokensPropCommitsCommitProp
Tomi Valkeinen74100.00%1100.00%
Total74100.00%1100.00%

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

PersonTokensPropCommitsCommitProp
Tomi Valkeinen85100.00%1100.00%
Total85100.00%1100.00%


u32 dss_of_port_get_port_number(struct device_node *port) { int r; u32 reg; r = of_property_read_u32(port, "reg", &reg); if (r) reg = 0; return reg; }

Contributors

PersonTokensPropCommitsCommitProp
Tomi Valkeinen39100.00%1100.00%
Total39100.00%1100.00%


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

PersonTokensPropCommitsCommitProp
Tomi Valkeinen48100.00%1100.00%
Total48100.00%1100.00%


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

PersonTokensPropCommitsCommitProp
Tomi Valkeinen55100.00%1100.00%
Total55100.00%1100.00%

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

PersonTokensPropCommitsCommitProp
Tomi Valkeinen100100.00%1100.00%
Total100100.00%1100.00%

EXPORT_SYMBOL_GPL(omapdss_of_find_source_for_first_ep);

Overall Contributors

PersonTokensPropCommitsCommitProp
Tomi Valkeinen59699.83%150.00%
Peter Ujfalusi10.17%150.00%
Total597100.00%2100.00%
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