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drm/omap: drop omapdss-boot-init
The table of compatible values needed to be prefixed with "omapdss," is empty, so all of this code is doing nothing now. Let's drop it. Signed-off-by: Sebastian Reichel <sebastian.reichel@collabora.com> Signed-off-by: Tomi Valkeinen <tomi.valkeinen@ti.com> Reviewed-by: Laurent Pinchart <laurent.pinchart@ideasonboard.com> Link: https://patchwork.freedesktop.org/patch/msgid/20201215104657.802264-34-tomi.valkeinen@ti.com
This commit is contained in:
Sebastian Reichel
Tomi Valkeinen
parent
1cac9ba252
commit
9f2231795b
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@ -1,7 +1,4 @@
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# SPDX-License-Identifier: GPL-2.0-only
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config OMAP2_DSS_INIT
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bool
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config OMAP_DSS_BASE
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tristate
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@ -9,7 +6,6 @@ menuconfig OMAP2_DSS
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tristate "OMAP2+ Display Subsystem support"
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select OMAP_DSS_BASE
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select VIDEOMODE_HELPERS
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select OMAP2_DSS_INIT
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select HDMI
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help
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OMAP2+ Display Subsystem support.
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@ -1,6 +1,4 @@
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# SPDX-License-Identifier: GPL-2.0
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obj-$(CONFIG_OMAP2_DSS_INIT) += omapdss-boot-init.o
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obj-$(CONFIG_OMAP_DSS_BASE) += omapdss-base.o
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omapdss-base-y := base.o display.o output.o
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@ -1,228 +0,0 @@
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// SPDX-License-Identifier: GPL-2.0-only
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/*
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* Copyright (C) 2014 Texas Instruments Incorporated - https://www.ti.com/
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* Author: Tomi Valkeinen <tomi.valkeinen@ti.com>
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*/
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/*
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* As omapdss panel drivers are omapdss specific, but we want to define the
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* DT-data in generic manner, we convert the compatible strings of the panel and
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* encoder nodes from "panel-foo" to "omapdss,panel-foo". This way we can have
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* both correct DT data and omapdss specific drivers.
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*
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* When we get generic panel drivers to the kernel, this file will be removed.
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*/
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#include <linux/kernel.h>
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#include <linux/of.h>
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#include <linux/of_graph.h>
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#include <linux/slab.h>
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#include <linux/list.h>
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static struct list_head dss_conv_list __initdata;
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static const char prefix[] __initconst = "omapdss,";
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struct dss_conv_node {
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struct list_head list;
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struct device_node *node;
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bool root;
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};
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static int __init omapdss_count_strings(const struct property *prop)
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{
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const char *p = prop->value;
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int l = 0, total = 0;
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int i;
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for (i = 0; total < prop->length; total += l, p += l, i++)
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l = strlen(p) + 1;
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return i;
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}
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static void __init omapdss_update_prop(struct device_node *node, char *compat,
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int len)
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{
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struct property *prop;
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prop = kzalloc(sizeof(*prop), GFP_KERNEL);
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if (!prop)
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return;
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prop->name = "compatible";
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prop->value = compat;
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prop->length = len;
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of_update_property(node, prop);
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}
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static void __init omapdss_prefix_strcpy(char *dst, int dst_len,
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const char *src, int src_len)
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{
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size_t total = 0;
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while (total < src_len) {
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size_t l = strlen(src) + 1;
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strcpy(dst, prefix);
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dst += strlen(prefix);
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strcpy(dst, src);
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dst += l;
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src += l;
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total += l;
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}
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}
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/* prepend compatible property strings with "omapdss," */
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static void __init omapdss_omapify_node(struct device_node *node)
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{
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struct property *prop;
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char *new_compat;
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int num_strs;
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int new_len;
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prop = of_find_property(node, "compatible", NULL);
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if (!prop || !prop->value)
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return;
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if (strnlen(prop->value, prop->length) >= prop->length)
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return;
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/* is it already prefixed? */
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if (strncmp(prefix, prop->value, strlen(prefix)) == 0)
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return;
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num_strs = omapdss_count_strings(prop);
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new_len = prop->length + strlen(prefix) * num_strs;
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new_compat = kmalloc(new_len, GFP_KERNEL);
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omapdss_prefix_strcpy(new_compat, new_len, prop->value, prop->length);
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omapdss_update_prop(node, new_compat, new_len);
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}
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static void __init omapdss_add_to_list(struct device_node *node, bool root)
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{
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struct dss_conv_node *n = kmalloc(sizeof(*n), GFP_KERNEL);
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if (n) {
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n->node = node;
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n->root = root;
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list_add(&n->list, &dss_conv_list);
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}
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}
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static bool __init omapdss_list_contains(const struct device_node *node)
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{
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struct dss_conv_node *n;
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list_for_each_entry(n, &dss_conv_list, list) {
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if (n->node == node)
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return true;
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}
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return false;
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}
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static void __init omapdss_walk_device(struct device_node *node, bool root)
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{
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struct device_node *n;
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omapdss_add_to_list(node, root);
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/*
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* of_graph_get_remote_port_parent() prints an error if there is no
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* port/ports node. To avoid that, check first that there's the node.
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*/
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n = of_get_child_by_name(node, "ports");
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if (!n)
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n = of_get_child_by_name(node, "port");
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if (!n)
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return;
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of_node_put(n);
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n = NULL;
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while ((n = of_graph_get_next_endpoint(node, n)) != NULL) {
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struct device_node *pn;
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pn = of_graph_get_remote_port_parent(n);
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if (!pn)
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continue;
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if (!of_device_is_available(pn) || omapdss_list_contains(pn)) {
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of_node_put(pn);
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continue;
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}
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omapdss_walk_device(pn, false);
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}
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}
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static const struct of_device_id omapdss_of_match[] __initconst = {
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{ .compatible = "ti,omap2-dss", },
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{ .compatible = "ti,omap3-dss", },
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{ .compatible = "ti,omap4-dss", },
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{ .compatible = "ti,omap5-dss", },
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{ .compatible = "ti,dra7-dss", },
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{},
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};
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static const struct of_device_id omapdss_of_fixups_whitelist[] __initconst = {
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{},
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};
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static void __init omapdss_find_children(struct device_node *np)
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{
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struct device_node *child;
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for_each_available_child_of_node(np, child) {
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if (!of_find_property(child, "compatible", NULL))
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continue;
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omapdss_walk_device(child, true);
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if (of_device_is_compatible(child, "ti,sysc"))
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omapdss_find_children(child);
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}
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}
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static int __init omapdss_boot_init(void)
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{
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struct device_node *dss;
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INIT_LIST_HEAD(&dss_conv_list);
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dss = of_find_matching_node(NULL, omapdss_of_match);
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if (dss == NULL || !of_device_is_available(dss))
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goto put_node;
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omapdss_walk_device(dss, true);
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omapdss_find_children(dss);
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while (!list_empty(&dss_conv_list)) {
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struct dss_conv_node *n;
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n = list_first_entry(&dss_conv_list, struct dss_conv_node,
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list);
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if (of_match_node(omapdss_of_fixups_whitelist, n->node))
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omapdss_omapify_node(n->node);
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list_del(&n->list);
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of_node_put(n->node);
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kfree(n);
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}
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put_node:
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of_node_put(dss);
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return 0;
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}
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subsys_initcall(omapdss_boot_init);
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