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author | Daniel Baumann <daniel.baumann@progress-linux.org> | 2024-04-07 18:49:45 +0000 |
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committer | Daniel Baumann <daniel.baumann@progress-linux.org> | 2024-04-07 18:49:45 +0000 |
commit | 2c3c1048746a4622d8c89a29670120dc8fab93c4 (patch) | |
tree | 848558de17fb3008cdf4d861b01ac7781903ce39 /drivers/video/fbdev/omap2/omapfb/dss/display-sysfs.c | |
parent | Initial commit. (diff) | |
download | linux-2c3c1048746a4622d8c89a29670120dc8fab93c4.tar.xz linux-2c3c1048746a4622d8c89a29670120dc8fab93c4.zip |
Adding upstream version 6.1.76.upstream/6.1.76
Signed-off-by: Daniel Baumann <daniel.baumann@progress-linux.org>
Diffstat (limited to 'drivers/video/fbdev/omap2/omapfb/dss/display-sysfs.c')
-rw-r--r-- | drivers/video/fbdev/omap2/omapfb/dss/display-sysfs.c | 346 |
1 files changed, 346 insertions, 0 deletions
diff --git a/drivers/video/fbdev/omap2/omapfb/dss/display-sysfs.c b/drivers/video/fbdev/omap2/omapfb/dss/display-sysfs.c new file mode 100644 index 000000000..bc5a44c2a --- /dev/null +++ b/drivers/video/fbdev/omap2/omapfb/dss/display-sysfs.c @@ -0,0 +1,346 @@ +// 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/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 = strtobool(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 = strtobool(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 = strtobool(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)); + } +} |