1 files changed, 345 insertions, 0 deletions

diff --git a/drivers/video/fbdev/omap2/dss/display-sysfs.c b/drivers/video/fbdev/omap2/dss/display-sysfs.c
new file mode 100644
index 000000000000..5a2095a98ed8
--- /dev/null
+++ b/drivers/video/fbdev/omap2/dss/display-sysfs.c
@@ -0,0 +1,345 @@
+/*
+ * 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.
+ *
+ * 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.
+ *
+ * This program is distributed in the hope that it will be useful, but WITHOUT
+ * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
+ * FITNESS FOR A PARTICULAR PURPOSE.  See the GNU General Public License for
+ * more details.
+ *
+ * You should have received a copy of the GNU General Public License along with
+ * this program.  If not, see <http://www.gnu.org/licenses/>.
+ */
+
+#define DSS_SUBSYS_NAME "DISPLAY"
+
+#include <linux/kernel.h>
+#include <linux/module.h>
+#include <linux/platform_device.h>
+#include <linux/sysfs.h>
+
+#include <video/omapdss.h>
+#include "dss.h"
+
+static struct omap_dss_device *to_dss_device_sysfs(struct device *dev)
+{
+        struct omap_dss_device *dssdev = NULL;
+
+        for_each_dss_dev(dssdev) {
+                if (dssdev->dev == dev) {
+                        omap_dss_put_device(dssdev);
+                        return dssdev;
+                }
+        }
+
+        return NULL;
+}
+
+static ssize_t display_name_show(struct device *dev,
+                struct device_attribute *attr, char *buf)
+{
+        struct omap_dss_device *dssdev = to_dss_device_sysfs(dev);
+
+        return snprintf(buf, PAGE_SIZE, "%s\n",
+                        dssdev->name ?
+                        dssdev->name : "");
+}
+
+static ssize_t display_enabled_show(struct device *dev,
+                struct device_attribute *attr, char *buf)
+{
+        struct omap_dss_device *dssdev = to_dss_device_sysfs(dev);
+
+        return snprintf(buf, PAGE_SIZE, "%d\n",
+                        omapdss_device_is_enabled(dssdev));
+}
+
+static ssize_t display_enabled_store(struct device *dev,
+                struct device_attribute *attr,
+                const char *buf, size_t size)
+{
+        struct omap_dss_device *dssdev = to_dss_device_sysfs(dev);
+        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 device *dev,
+                struct device_attribute *attr, char *buf)
+{
+        struct omap_dss_device *dssdev = to_dss_device_sysfs(dev);
+        return snprintf(buf, PAGE_SIZE, "%d\n",
+                        dssdev->driver->get_te ?
+                        dssdev->driver->get_te(dssdev) : 0);
+}
+
+static ssize_t display_tear_store(struct device *dev,
+                struct device_attribute *attr, const char *buf, size_t size)
+{
+        struct omap_dss_device *dssdev = to_dss_device_sysfs(dev);
+        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 device *dev,
+                struct device_attribute *attr, char *buf)
+{
+        struct omap_dss_device *dssdev = to_dss_device_sysfs(dev);
+        struct omap_video_timings t;
+
+        if (!dssdev->driver->get_timings)
+                return -ENOENT;
+
+        dssdev->driver->get_timings(dssdev, &t);
+
+        return snprintf(buf, PAGE_SIZE, "%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 device *dev,
+                struct device_attribute *attr, const char *buf, size_t size)
+{
+        struct omap_dss_device *dssdev = to_dss_device_sysfs(dev);
+        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_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 device *dev,
+                struct device_attribute *attr, char *buf)
+{
+        struct omap_dss_device *dssdev = to_dss_device_sysfs(dev);
+        int rotate;
+        if (!dssdev->driver->get_rotate)
+                return -ENOENT;
+        rotate = dssdev->driver->get_rotate(dssdev);
+        return snprintf(buf, PAGE_SIZE, "%u\n", rotate);
+}
+
+static ssize_t display_rotate_store(struct device *dev,
+                struct device_attribute *attr, const char *buf, size_t size)
+{
+        struct omap_dss_device *dssdev = to_dss_device_sysfs(dev);
+        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 device *dev,
+                struct device_attribute *attr, char *buf)
+{
+        struct omap_dss_device *dssdev = to_dss_device_sysfs(dev);
+        int mirror;
+        if (!dssdev->driver->get_mirror)
+                return -ENOENT;
+        mirror = dssdev->driver->get_mirror(dssdev);
+        return snprintf(buf, PAGE_SIZE, "%u\n", mirror);
+}
+
+static ssize_t display_mirror_store(struct device *dev,
+                struct device_attribute *attr, const char *buf, size_t size)
+{
+        struct omap_dss_device *dssdev = to_dss_device_sysfs(dev);
+        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 device *dev,
+                struct device_attribute *attr, char *buf)
+{
+        struct omap_dss_device *dssdev = to_dss_device_sysfs(dev);
+        unsigned int wss;
+
+        if (!dssdev->driver->get_wss)
+                return -ENOENT;
+
+        wss = dssdev->driver->get_wss(dssdev);
+
+        return snprintf(buf, PAGE_SIZE, "0x%05x\n", wss);
+}
+
+static ssize_t display_wss_store(struct device *dev,
+                struct device_attribute *attr, const char *buf, size_t size)
+{
+        struct omap_dss_device *dssdev = to_dss_device_sysfs(dev);
+        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;
+}
+
+static DEVICE_ATTR(display_name, S_IRUGO, display_name_show, NULL);
+static DEVICE_ATTR(enabled, S_IRUGO|S_IWUSR,
+                display_enabled_show, display_enabled_store);
+static DEVICE_ATTR(tear_elim, S_IRUGO|S_IWUSR,
+                display_tear_show, display_tear_store);
+static DEVICE_ATTR(timings, S_IRUGO|S_IWUSR,
+                display_timings_show, display_timings_store);
+static DEVICE_ATTR(rotate, S_IRUGO|S_IWUSR,
+                display_rotate_show, display_rotate_store);
+static DEVICE_ATTR(mirror, S_IRUGO|S_IWUSR,
+                display_mirror_show, display_mirror_store);
+static DEVICE_ATTR(wss, S_IRUGO|S_IWUSR,
+                display_wss_show, display_wss_store);
+
+static const struct attribute *display_sysfs_attrs[] = {
+        &dev_attr_display_name.attr,
+        &dev_attr_enabled.attr,
+        &dev_attr_tear_elim.attr,
+        &dev_attr_timings.attr,
+        &dev_attr_rotate.attr,
+        &dev_attr_mirror.attr,
+        &dev_attr_wss.attr,
+        NULL
+};
+
+int display_init_sysfs(struct platform_device *pdev)
+{
+        struct omap_dss_device *dssdev = NULL;
+        int r;
+
+        for_each_dss_dev(dssdev) {
+                struct kobject *kobj = &dssdev->dev->kobj;
+
+                r = sysfs_create_files(kobj, display_sysfs_attrs);
+                if (r) {
+                        DSSERR("failed to create sysfs files\n");
+                        goto err;
+                }
+
+                r = sysfs_create_link(&pdev->dev.kobj, kobj, dssdev->alias);
+                if (r) {
+                        sysfs_remove_files(kobj, display_sysfs_attrs);
+
+                        DSSERR("failed to create sysfs display link\n");
+                        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) {
+                sysfs_remove_link(&pdev->dev.kobj, dssdev->alias);
+                sysfs_remove_files(&dssdev->dev->kobj,
+                                display_sysfs_attrs);
+        }
+}