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// SPDX-License-Identifier: GPL-2.0
#include <linux/proc_fs.h>
#include "fb_internal.h"
static struct proc_dir_entry *fb_proc_dir_entry;
static void *fb_seq_start(struct seq_file *m, loff_t *pos)
{
mutex_lock(®istration_lock);
return (*pos < FB_MAX) ? pos : NULL;
}
static void fb_seq_stop(struct seq_file *m, void *v)
{
mutex_unlock(®istration_lock);
}
static void *fb_seq_next(struct seq_file *m, void *v, loff_t *pos)
{
(*pos)++;
return (*pos < FB_MAX) ? pos : NULL;
}
static int fb_seq_show(struct seq_file *m, void *v)
{
int i = *(loff_t *)v;
struct fb_info *fi = registered_fb[i];
if (fi)
seq_printf(m, "%d %s\n", fi->node, fi->fix.id);
return 0;
}
static const struct seq_operations __maybe_unused fb_proc_seq_ops = {
.start = fb_seq_start,
.stop = fb_seq_stop,
.next = fb_seq_next,
.show = fb_seq_show,
};
int fb_init_procfs(void)
{
struct proc_dir_entry *proc;
proc = proc_create_seq("fb", 0, NULL, &fb_proc_seq_ops);
if (!proc)
return -ENOMEM;
fb_proc_dir_entry = proc;
return 0;
}
void fb_cleanup_procfs(void)
{
proc_remove(fb_proc_dir_entry);
}
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