blob: ae937854403b1278107ade98c9d9922cbf83ec22 [file] [log] [blame]
// SPDX-License-Identifier: GPL-2.0-only
/*
* Copyright (C) 2009 Nokia Corporation
* Author: Tomi Valkeinen <tomi.valkeinen@nokia.com>
*
* Some code and ideas taken from drivers/video/omap/ driver
* by Imre Deak.
*/
#define DSS_SUBSYS_NAME "DISPLAY"
#include <linux/kernel.h>
#include <linux/kstrtox.h>
#include <linux/module.h>
#include <linux/platform_device.h>
#include <linux/sysfs.h>
#include <video/omapfb_dss.h>
#include "dss.h"
static ssize_t display_name_show(struct omap_dss_device *dssdev, char *buf)
{
return sysfs_emit(buf, "%s\n",
dssdev->name ?
dssdev->name : "");
}
static ssize_t display_enabled_show(struct omap_dss_device *dssdev, char *buf)
{
return sysfs_emit(buf, "%d\n",
omapdss_device_is_enabled(dssdev));
}
static ssize_t display_enabled_store(struct omap_dss_device *dssdev,
const char *buf, size_t size)
{
int r;
bool enable;
r = kstrtobool(buf, &enable);
if (r)
return r;
if (enable == omapdss_device_is_enabled(dssdev))
return size;
if (omapdss_device_is_connected(dssdev) == false)
return -ENODEV;
if (enable) {
r = dssdev->driver->enable(dssdev);
if (r)
return r;
} else {
dssdev->driver->disable(dssdev);
}
return size;
}
static ssize_t display_tear_show(struct omap_dss_device *dssdev, char *buf)
{
return sysfs_emit(buf, "%d\n",
dssdev->driver->get_te ?
dssdev->driver->get_te(dssdev) : 0);
}
static ssize_t display_tear_store(struct omap_dss_device *dssdev,
const char *buf, size_t size)
{
int r;
bool te;
if (!dssdev->driver->enable_te || !dssdev->driver->get_te)
return -ENOENT;
r = kstrtobool(buf, &te);
if (r)
return r;
r = dssdev->driver->enable_te(dssdev, te);
if (r)
return r;
return size;
}
static ssize_t display_timings_show(struct omap_dss_device *dssdev, char *buf)
{
struct omap_video_timings t;
if (!dssdev->driver->get_timings)
return -ENOENT;
dssdev->driver->get_timings(dssdev, &t);
return sysfs_emit(buf, "%u,%u/%u/%u/%u,%u/%u/%u/%u\n",
t.pixelclock,
t.x_res, t.hfp, t.hbp, t.hsw,
t.y_res, t.vfp, t.vbp, t.vsw);
}
static ssize_t display_timings_store(struct omap_dss_device *dssdev,
const char *buf, size_t size)
{
struct omap_video_timings t = dssdev->panel.timings;
int r, found;
if (!dssdev->driver->set_timings || !dssdev->driver->check_timings)
return -ENOENT;
found = 0;
#ifdef CONFIG_FB_OMAP2_DSS_VENC
if (strncmp("pal", buf, 3) == 0) {
t = omap_dss_pal_timings;
found = 1;
} else if (strncmp("ntsc", buf, 4) == 0) {
t = omap_dss_ntsc_timings;
found = 1;
}
#endif
if (!found && sscanf(buf, "%u,%hu/%hu/%hu/%hu,%hu/%hu/%hu/%hu",
&t.pixelclock,
&t.x_res, &t.hfp, &t.hbp, &t.hsw,
&t.y_res, &t.vfp, &t.vbp, &t.vsw) != 9)
return -EINVAL;
r = dssdev->driver->check_timings(dssdev, &t);
if (r)
return r;
dssdev->driver->disable(dssdev);
dssdev->driver->set_timings(dssdev, &t);
r = dssdev->driver->enable(dssdev);
if (r)
return r;
return size;
}
static ssize_t display_rotate_show(struct omap_dss_device *dssdev, char *buf)
{
int rotate;
if (!dssdev->driver->get_rotate)
return -ENOENT;
rotate = dssdev->driver->get_rotate(dssdev);
return sysfs_emit(buf, "%u\n", rotate);
}
static ssize_t display_rotate_store(struct omap_dss_device *dssdev,
const char *buf, size_t size)
{
int rot, r;
if (!dssdev->driver->set_rotate || !dssdev->driver->get_rotate)
return -ENOENT;
r = kstrtoint(buf, 0, &rot);
if (r)
return r;
r = dssdev->driver->set_rotate(dssdev, rot);
if (r)
return r;
return size;
}
static ssize_t display_mirror_show(struct omap_dss_device *dssdev, char *buf)
{
int mirror;
if (!dssdev->driver->get_mirror)
return -ENOENT;
mirror = dssdev->driver->get_mirror(dssdev);
return sysfs_emit(buf, "%u\n", mirror);
}
static ssize_t display_mirror_store(struct omap_dss_device *dssdev,
const char *buf, size_t size)
{
int r;
bool mirror;
if (!dssdev->driver->set_mirror || !dssdev->driver->get_mirror)
return -ENOENT;
r = kstrtobool(buf, &mirror);
if (r)
return r;
r = dssdev->driver->set_mirror(dssdev, mirror);
if (r)
return r;
return size;
}
static ssize_t display_wss_show(struct omap_dss_device *dssdev, char *buf)
{
unsigned int wss;
if (!dssdev->driver->get_wss)
return -ENOENT;
wss = dssdev->driver->get_wss(dssdev);
return sysfs_emit(buf, "0x%05x\n", wss);
}
static ssize_t display_wss_store(struct omap_dss_device *dssdev,
const char *buf, size_t size)
{
u32 wss;
int r;
if (!dssdev->driver->get_wss || !dssdev->driver->set_wss)
return -ENOENT;
r = kstrtou32(buf, 0, &wss);
if (r)
return r;
if (wss > 0xfffff)
return -EINVAL;
r = dssdev->driver->set_wss(dssdev, wss);
if (r)
return r;
return size;
}
struct display_attribute {
struct attribute attr;
ssize_t (*show)(struct omap_dss_device *, char *);
ssize_t (*store)(struct omap_dss_device *, const char *, size_t);
};
#define DISPLAY_ATTR(_name, _mode, _show, _store) \
struct display_attribute display_attr_##_name = \
__ATTR(_name, _mode, _show, _store)
static DISPLAY_ATTR(name, S_IRUGO, display_name_show, NULL);
static DISPLAY_ATTR(display_name, S_IRUGO, display_name_show, NULL);
static DISPLAY_ATTR(enabled, S_IRUGO|S_IWUSR,
display_enabled_show, display_enabled_store);
static DISPLAY_ATTR(tear_elim, S_IRUGO|S_IWUSR,
display_tear_show, display_tear_store);
static DISPLAY_ATTR(timings, S_IRUGO|S_IWUSR,
display_timings_show, display_timings_store);
static DISPLAY_ATTR(rotate, S_IRUGO|S_IWUSR,
display_rotate_show, display_rotate_store);
static DISPLAY_ATTR(mirror, S_IRUGO|S_IWUSR,
display_mirror_show, display_mirror_store);
static DISPLAY_ATTR(wss, S_IRUGO|S_IWUSR,
display_wss_show, display_wss_store);
static struct attribute *display_sysfs_attrs[] = {
&display_attr_name.attr,
&display_attr_display_name.attr,
&display_attr_enabled.attr,
&display_attr_tear_elim.attr,
&display_attr_timings.attr,
&display_attr_rotate.attr,
&display_attr_mirror.attr,
&display_attr_wss.attr,
NULL
};
ATTRIBUTE_GROUPS(display_sysfs);
static ssize_t display_attr_show(struct kobject *kobj, struct attribute *attr,
char *buf)
{
struct omap_dss_device *dssdev;
struct display_attribute *display_attr;
dssdev = container_of(kobj, struct omap_dss_device, kobj);
display_attr = container_of(attr, struct display_attribute, attr);
if (!display_attr->show)
return -ENOENT;
return display_attr->show(dssdev, buf);
}
static ssize_t display_attr_store(struct kobject *kobj, struct attribute *attr,
const char *buf, size_t size)
{
struct omap_dss_device *dssdev;
struct display_attribute *display_attr;
dssdev = container_of(kobj, struct omap_dss_device, kobj);
display_attr = container_of(attr, struct display_attribute, attr);
if (!display_attr->store)
return -ENOENT;
return display_attr->store(dssdev, buf, size);
}
static const struct sysfs_ops display_sysfs_ops = {
.show = display_attr_show,
.store = display_attr_store,
};
static struct kobj_type display_ktype = {
.sysfs_ops = &display_sysfs_ops,
.default_groups = display_sysfs_groups,
};
int display_init_sysfs(struct platform_device *pdev)
{
struct omap_dss_device *dssdev = NULL;
int r;
for_each_dss_dev(dssdev) {
r = kobject_init_and_add(&dssdev->kobj, &display_ktype,
&pdev->dev.kobj, "%s", dssdev->alias);
if (r) {
DSSERR("failed to create sysfs files\n");
omap_dss_put_device(dssdev);
goto err;
}
}
return 0;
err:
display_uninit_sysfs(pdev);
return r;
}
void display_uninit_sysfs(struct platform_device *pdev)
{
struct omap_dss_device *dssdev = NULL;
for_each_dss_dev(dssdev) {
if (kobject_name(&dssdev->kobj) == NULL)
continue;
kobject_del(&dssdev->kobj);
kobject_put(&dssdev->kobj);
memset(&dssdev->kobj, 0, sizeof(dssdev->kobj));
}
}