diff options
Diffstat (limited to 'drivers/video/fbdev/omap2/dss/dss-of.c')
| -rw-r--r-- | drivers/video/fbdev/omap2/dss/dss-of.c | 183 |
1 files changed, 0 insertions, 183 deletions
diff --git a/drivers/video/fbdev/omap2/dss/dss-of.c b/drivers/video/fbdev/omap2/dss/dss-of.c deleted file mode 100644 index bf407b6ba15c..000000000000 --- a/drivers/video/fbdev/omap2/dss/dss-of.c +++ /dev/null @@ -1,183 +0,0 @@ -/* - * 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/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; -} -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; -} -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; -} - -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; -} - -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; -} - -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; -} -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); -} -EXPORT_SYMBOL_GPL(omapdss_of_find_source_for_first_ep); |