Release 4.11 drivers/gpu/drm/tilcdc/tilcdc_slave_compat.c
/*
* Copyright (C) 2015 Texas Instruments
* Author: Jyri Sarha <jsarha@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.
*
*/
/*
* To support the old "ti,tilcdc,slave" binding the binding has to be
* transformed to the new external encoder binding.
*/
#include <linux/kernel.h>
#include <linux/of.h>
#include <linux/of_graph.h>
#include <linux/of_fdt.h>
#include <linux/slab.h>
#include <linux/list.h>
#include "tilcdc_slave_compat.h"
struct kfree_table {
int total;
int num;
void **table;
};
static int __init kfree_table_init(struct kfree_table *kft)
{
kft->total = 32;
kft->num = 0;
kft->table = kmalloc(kft->total * sizeof(*kft->table),
GFP_KERNEL);
if (!kft->table)
return -ENOMEM;
return 0;
}
Contributors
| Person | Tokens | Prop | Commits | CommitProp |
| Jyri Sarha | 59 | 100.00% | 1 | 100.00% |
| Total | 59 | 100.00% | 1 | 100.00% |
static int __init kfree_table_add(struct kfree_table *kft, void *p)
{
if (kft->num == kft->total) {
void **old = kft->table;
kft->total *= 2;
kft->table = krealloc(old, kft->total * sizeof(*kft->table),
GFP_KERNEL);
if (!kft->table) {
kft->table = old;
kfree(p);
return -ENOMEM;
}
}
kft->table[kft->num++] = p;
return 0;
}
Contributors
| Person | Tokens | Prop | Commits | CommitProp |
| Jyri Sarha | 105 | 100.00% | 1 | 100.00% |
| Total | 105 | 100.00% | 1 | 100.00% |
static void __init kfree_table_free(struct kfree_table *kft)
{
int i;
for (i = 0; i < kft->num; i++)
kfree(kft->table[i]);
kfree(kft->table);
}
Contributors
| Person | Tokens | Prop | Commits | CommitProp |
| Jyri Sarha | 47 | 100.00% | 1 | 100.00% |
| Total | 47 | 100.00% | 1 | 100.00% |
static
struct property * __init tilcdc_prop_dup(const struct property *prop,
struct kfree_table *kft)
{
struct property *nprop;
nprop = kzalloc(sizeof(*nprop), GFP_KERNEL);
if (!nprop || kfree_table_add(kft, nprop))
return NULL;
nprop->name = kstrdup(prop->name, GFP_KERNEL);
if (!nprop->name || kfree_table_add(kft, nprop->name))
return NULL;
nprop->value = kmemdup(prop->value, prop->length, GFP_KERNEL);
if (!nprop->value || kfree_table_add(kft, nprop->value))
return NULL;
nprop->length = prop->length;
return nprop;
}
Contributors
| Person | Tokens | Prop | Commits | CommitProp |
| Jyri Sarha | 132 | 100.00% | 1 | 100.00% |
| Total | 132 | 100.00% | 1 | 100.00% |
static void __init tilcdc_copy_props(struct device_node *from,
struct device_node *to,
const char * const props[],
struct kfree_table *kft)
{
struct property *prop;
int i;
for (i = 0; props[i]; i++) {
prop = of_find_property(from, props[i], NULL);
if (!prop)
continue;
prop = tilcdc_prop_dup(prop, kft);
if (!prop)
continue;
prop->next = to->properties;
to->properties = prop;
}
}
Contributors
| Person | Tokens | Prop | Commits | CommitProp |
| Jyri Sarha | 102 | 100.00% | 1 | 100.00% |
| Total | 102 | 100.00% | 1 | 100.00% |
static int __init tilcdc_prop_str_update(struct property *prop,
const char *str,
struct kfree_table *kft)
{
prop->value = kstrdup(str, GFP_KERNEL);
if (kfree_table_add(kft, prop->value) || !prop->value)
return -ENOMEM;
prop->length = strlen(str)+1;
return 0;
}
Contributors
| Person | Tokens | Prop | Commits | CommitProp |
| Jyri Sarha | 67 | 100.00% | 1 | 100.00% |
| Total | 67 | 100.00% | 1 | 100.00% |
static void __init tilcdc_node_disable(struct device_node *node)
{
struct property *prop;
prop = kzalloc(sizeof(*prop), GFP_KERNEL);
if (!prop)
return;
prop->name = "status";
prop->value = "disabled";
prop->length = strlen((char *)prop->value)+1;
of_update_property(node, prop);
}
Contributors
| Person | Tokens | Prop | Commits | CommitProp |
| Jyri Sarha | 72 | 100.00% | 1 | 100.00% |
| Total | 72 | 100.00% | 1 | 100.00% |
static struct device_node * __init tilcdc_get_overlay(struct kfree_table *kft)
{
const int size = __dtb_tilcdc_slave_compat_end -
__dtb_tilcdc_slave_compat_begin;
static void *overlay_data;
struct device_node *overlay;
int ret;
if (!size) {
pr_warn("%s: No overlay data\n", __func__);
return NULL;
}
overlay_data = kmemdup(__dtb_tilcdc_slave_compat_begin,
size, GFP_KERNEL);
if (!overlay_data || kfree_table_add(kft, overlay_data))
return NULL;
of_fdt_unflatten_tree(overlay_data, NULL, &overlay);
if (!overlay) {
pr_warn("%s: Unfattening overlay tree failed\n", __func__);
return NULL;
}
of_node_set_flag(overlay, OF_DETACHED);
ret = of_resolve_phandles(overlay);
if (ret) {
pr_err("%s: Failed to resolve phandles: %d\n", __func__, ret);
return NULL;
}
return overlay;
}
Contributors
| Person | Tokens | Prop | Commits | CommitProp |
| Jyri Sarha | 137 | 97.86% | 1 | 33.33% |
| Gavin Shan | 2 | 1.43% | 1 | 33.33% |
| Baoyou Xie | 1 | 0.71% | 1 | 33.33% |
| Total | 140 | 100.00% | 3 | 100.00% |
static const struct of_device_id tilcdc_slave_of_match[] __initconst = {
{ .compatible = "ti,tilcdc,slave", },
{},
};
static const struct of_device_id tilcdc_of_match[] __initconst = {
{ .compatible = "ti,am33xx-tilcdc", },
{},
};
static const struct of_device_id tilcdc_tda998x_of_match[] __initconst = {
{ .compatible = "nxp,tda998x", },
{},
};
static const char * const tilcdc_slave_props[] __initconst = {
"pinctrl-names",
"pinctrl-0",
"pinctrl-1",
NULL
};
static void __init tilcdc_convert_slave_node(void)
{
struct device_node *slave = NULL, *lcdc = NULL;
struct device_node *i2c = NULL, *fragment = NULL;
struct device_node *overlay, *encoder;
struct property *prop;
/* For all memory needed for the overlay tree. This memory can
be freed after the overlay has been applied. */
struct kfree_table kft;
int ret;
if (kfree_table_init(&kft))
return;
lcdc = of_find_matching_node(NULL, tilcdc_of_match);
slave = of_find_matching_node(NULL, tilcdc_slave_of_match);
if (!slave || !of_device_is_available(lcdc))
goto out;
i2c = of_parse_phandle(slave, "i2c", 0);
if (!i2c) {
pr_err("%s: Can't find i2c node trough phandle\n", __func__);
goto out;
}
overlay = tilcdc_get_overlay(&kft);
if (!overlay)
goto out;
encoder = of_find_matching_node(overlay, tilcdc_tda998x_of_match);
if (!encoder) {
pr_err("%s: Failed to find tda998x node\n", __func__);
goto out;
}
tilcdc_copy_props(slave, encoder, tilcdc_slave_props, &kft);
for_each_child_of_node(overlay, fragment) {
prop = of_find_property(fragment, "target-path", NULL);
if (!prop)
continue;
if (!strncmp("i2c", (char *)prop->value, prop->length))
if (tilcdc_prop_str_update(prop, i2c->full_name, &kft))
goto out;
if (!strncmp("lcdc", (char *)prop->value, prop->length))
if (tilcdc_prop_str_update(prop, lcdc->full_name, &kft))
goto out;
}
tilcdc_node_disable(slave);
ret = of_overlay_create(overlay);
if (ret)
pr_err("%s: Creating overlay failed: %d\n", __func__, ret);
else
pr_info("%s: ti,tilcdc,slave node successfully converted\n",
__func__);
out:
kfree_table_free(&kft);
of_node_put(i2c);
of_node_put(slave);
of_node_put(lcdc);
of_node_put(fragment);
}
Contributors
| Person | Tokens | Prop | Commits | CommitProp |
| Jyri Sarha | 335 | 99.41% | 1 | 33.33% |
| SF Markus Elfring | 1 | 0.30% | 1 | 33.33% |
| Baoyou Xie | 1 | 0.30% | 1 | 33.33% |
| Total | 337 | 100.00% | 3 | 100.00% |
static int __init tilcdc_slave_compat_init(void)
{
tilcdc_convert_slave_node();
return 0;
}
Contributors
| Person | Tokens | Prop | Commits | CommitProp |
| Jyri Sarha | 14 | 93.33% | 1 | 50.00% |
| Baoyou Xie | 1 | 6.67% | 1 | 50.00% |
| Total | 15 | 100.00% | 2 | 100.00% |
subsys_initcall(tilcdc_slave_compat_init);
Overall Contributors
| Person | Tokens | Prop | Commits | CommitProp |
| Jyri Sarha | 1190 | 99.50% | 1 | 25.00% |
| Baoyou Xie | 3 | 0.25% | 1 | 25.00% |
| Gavin Shan | 2 | 0.17% | 1 | 25.00% |
| SF Markus Elfring | 1 | 0.08% | 1 | 25.00% |
| Total | 1196 | 100.00% | 4 | 100.00% |
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