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path: root/drivers/video/fbdev/omap2/dss/omapdss-boot-init.c
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Diffstat (limited to 'drivers/video/fbdev/omap2/dss/omapdss-boot-init.c')
-rw-r--r--drivers/video/fbdev/omap2/dss/omapdss-boot-init.c225
1 files changed, 0 insertions, 225 deletions
diff --git a/drivers/video/fbdev/omap2/dss/omapdss-boot-init.c b/drivers/video/fbdev/omap2/dss/omapdss-boot-init.c
deleted file mode 100644
index 136d30484d02..000000000000
--- a/drivers/video/fbdev/omap2/dss/omapdss-boot-init.c
+++ /dev/null
@@ -1,225 +0,0 @@
-/*
- * Copyright (C) 2014 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.
- *
- * You should have received a copy of the GNU General Public License along with
- * this program. If not, see <http://www.gnu.org/licenses/>.
- */
-
-/*
- * As omapdss panel drivers are omapdss specific, but we want to define the
- * DT-data in generic manner, we convert the compatible strings of the panel and
- * encoder nodes from "panel-foo" to "omapdss,panel-foo". This way we can have
- * both correct DT data and omapdss specific drivers.
- *
- * When we get generic panel drivers to the kernel, this file will be removed.
- */
-
-#include <linux/kernel.h>
-#include <linux/of.h>
-#include <linux/of_graph.h>
-#include <linux/slab.h>
-#include <linux/list.h>
-
-static struct list_head dss_conv_list __initdata;
-
-static const char prefix[] __initconst = "omapdss,";
-
-struct dss_conv_node {
- struct list_head list;
- struct device_node *node;
- bool root;
-};
-
-static int __init omapdss_count_strings(const struct property *prop)
-{
- const char *p = prop->value;
- int l = 0, total = 0;
- int i;
-
- for (i = 0; total < prop->length; total += l, p += l, i++)
- l = strlen(p) + 1;
-
- return i;
-}
-
-static void __init omapdss_update_prop(struct device_node *node, char *compat,
- int len)
-{
- struct property *prop;
-
- prop = kzalloc(sizeof(*prop), GFP_KERNEL);
- if (!prop)
- return;
-
- prop->name = "compatible";
- prop->value = compat;
- prop->length = len;
-
- of_update_property(node, prop);
-}
-
-static void __init omapdss_prefix_strcpy(char *dst, int dst_len,
- const char *src, int src_len)
-{
- size_t total = 0;
-
- while (total < src_len) {
- size_t l = strlen(src) + 1;
-
- strcpy(dst, prefix);
- dst += strlen(prefix);
-
- strcpy(dst, src);
- dst += l;
-
- src += l;
- total += l;
- }
-}
-
-/* prepend compatible property strings with "omapdss," */
-static void __init omapdss_omapify_node(struct device_node *node)
-{
- struct property *prop;
- char *new_compat;
- int num_strs;
- int new_len;
-
- prop = of_find_property(node, "compatible", NULL);
-
- if (!prop || !prop->value)
- return;
-
- if (strnlen(prop->value, prop->length) >= prop->length)
- return;
-
- /* is it already prefixed? */
- if (strncmp(prefix, prop->value, strlen(prefix)) == 0)
- return;
-
- num_strs = omapdss_count_strings(prop);
-
- new_len = prop->length + strlen(prefix) * num_strs;
- new_compat = kmalloc(new_len, GFP_KERNEL);
-
- omapdss_prefix_strcpy(new_compat, new_len, prop->value, prop->length);
-
- omapdss_update_prop(node, new_compat, new_len);
-}
-
-static void __init omapdss_add_to_list(struct device_node *node, bool root)
-{
- struct dss_conv_node *n = kmalloc(sizeof(struct dss_conv_node),
- GFP_KERNEL);
- if (n) {
- n->node = node;
- n->root = root;
- list_add(&n->list, &dss_conv_list);
- }
-}
-
-static bool __init omapdss_list_contains(const struct device_node *node)
-{
- struct dss_conv_node *n;
-
- list_for_each_entry(n, &dss_conv_list, list) {
- if (n->node == node)
- return true;
- }
-
- return false;
-}
-
-static void __init omapdss_walk_device(struct device_node *node, bool root)
-{
- struct device_node *n;
-
- omapdss_add_to_list(node, root);
-
- /*
- * of_graph_get_remote_port_parent() prints an error if there is no
- * port/ports node. To avoid that, check first that there's the node.
- */
- n = of_get_child_by_name(node, "ports");
- if (!n)
- n = of_get_child_by_name(node, "port");
- if (!n)
- return;
-
- of_node_put(n);
-
- n = NULL;
- while ((n = of_graph_get_next_endpoint(node, n)) != NULL) {
- struct device_node *pn;
-
- pn = of_graph_get_remote_port_parent(n);
-
- if (!pn)
- continue;
-
- if (!of_device_is_available(pn) || omapdss_list_contains(pn)) {
- of_node_put(pn);
- continue;
- }
-
- omapdss_walk_device(pn, false);
- }
-}
-
-static const struct of_device_id omapdss_of_match[] __initconst = {
- { .compatible = "ti,omap2-dss", },
- { .compatible = "ti,omap3-dss", },
- { .compatible = "ti,omap4-dss", },
- { .compatible = "ti,omap5-dss", },
- { .compatible = "ti,dra7-dss", },
- {},
-};
-
-static int __init omapdss_boot_init(void)
-{
- struct device_node *dss, *child;
-
- INIT_LIST_HEAD(&dss_conv_list);
-
- dss = of_find_matching_node(NULL, omapdss_of_match);
-
- if (dss == NULL || !of_device_is_available(dss))
- return 0;
-
- omapdss_walk_device(dss, true);
-
- for_each_available_child_of_node(dss, child) {
- if (!of_find_property(child, "compatible", NULL))
- continue;
-
- omapdss_walk_device(child, true);
- }
-
- while (!list_empty(&dss_conv_list)) {
- struct dss_conv_node *n;
-
- n = list_first_entry(&dss_conv_list, struct dss_conv_node,
- list);
-
- if (!n->root)
- omapdss_omapify_node(n->node);
-
- list_del(&n->list);
- of_node_put(n->node);
- kfree(n);
- }
-
- return 0;
-}
-
-subsys_initcall(omapdss_boot_init);