drm/omap: move omapdss & displays under omapdrm

Now that omapfb has its own copy of omapdss and display drivers, we can
move omapdss and display drivers which omapdrm uses to omapdrm's
directory.

We also need to change the main drm Makefile so that omapdrm directory
is always entered, because omapdss has a file that can't be built as a
module.

Signed-off-by: Tomi Valkeinen <tomi.valkeinen@ti.com>
Acked-by: Dave Airlie <airlied@gmail.com>
Acked-by: Rob Clark <robdclark@gmail.com>

1 files changed, 456 insertions, 0 deletions

diff --git a/drivers/gpu/drm/omapdrm/dss/overlay-sysfs.c b/drivers/gpu/drm/omapdrm/dss/overlay-sysfs.c
new file mode 100644
index 000000000000..4cc5ddebfb34
--- /dev/null
+++ b/drivers/gpu/drm/omapdrm/dss/overlay-sysfs.c
@@ -0,0 +1,456 @@
+/*
+ * 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 "OVERLAY"
+
+#include <linux/module.h>
+#include <linux/err.h>
+#include <linux/sysfs.h>
+#include <linux/kobject.h>
+#include <linux/platform_device.h>
+
+#include <video/omapdss.h>
+
+#include "dss.h"
+#include "dss_features.h"
+
+static ssize_t overlay_name_show(struct omap_overlay *ovl, char *buf)
+{
+	return snprintf(buf, PAGE_SIZE, "%s\n", ovl->name);
+}
+
+static ssize_t overlay_manager_show(struct omap_overlay *ovl, char *buf)
+{
+	return snprintf(buf, PAGE_SIZE, "%s\n",
+			ovl->manager ? ovl->manager->name : "<none>");
+}
+
+static ssize_t overlay_manager_store(struct omap_overlay *ovl, const char *buf,
+		size_t size)
+{
+	int i, r;
+	struct omap_overlay_manager *mgr = NULL;
+	struct omap_overlay_manager *old_mgr;
+	int len = size;
+
+	if (buf[size-1] == '\n')
+		--len;
+
+	if (len > 0) {
+		for (i = 0; i < omap_dss_get_num_overlay_managers(); ++i) {
+			mgr = omap_dss_get_overlay_manager(i);
+
+			if (sysfs_streq(buf, mgr->name))
+				break;
+
+			mgr = NULL;
+		}
+	}
+
+	if (len > 0 && mgr == NULL)
+		return -EINVAL;
+
+	if (mgr)
+		DSSDBG("manager %s found\n", mgr->name);
+
+	if (mgr == ovl->manager)
+		return size;
+
+	old_mgr = ovl->manager;
+
+	r = dispc_runtime_get();
+	if (r)
+		return r;
+
+	/* detach old manager */
+	if (old_mgr) {
+		r = ovl->unset_manager(ovl);
+		if (r) {
+			DSSERR("detach failed\n");
+			goto err;
+		}
+
+		r = old_mgr->apply(old_mgr);
+		if (r)
+			goto err;
+	}
+
+	if (mgr) {
+		r = ovl->set_manager(ovl, mgr);
+		if (r) {
+			DSSERR("Failed to attach overlay\n");
+			goto err;
+		}
+
+		r = mgr->apply(mgr);
+		if (r)
+			goto err;
+	}
+
+	dispc_runtime_put();
+
+	return size;
+
+err:
+	dispc_runtime_put();
+	return r;
+}
+
+static ssize_t overlay_input_size_show(struct omap_overlay *ovl, char *buf)
+{
+	struct omap_overlay_info info;
+
+	ovl->get_overlay_info(ovl, &info);
+
+	return snprintf(buf, PAGE_SIZE, "%d,%d\n",
+			info.width, info.height);
+}
+
+static ssize_t overlay_screen_width_show(struct omap_overlay *ovl, char *buf)
+{
+	struct omap_overlay_info info;
+
+	ovl->get_overlay_info(ovl, &info);
+
+	return snprintf(buf, PAGE_SIZE, "%d\n", info.screen_width);
+}
+
+static ssize_t overlay_position_show(struct omap_overlay *ovl, char *buf)
+{
+	struct omap_overlay_info info;
+
+	ovl->get_overlay_info(ovl, &info);
+
+	return snprintf(buf, PAGE_SIZE, "%d,%d\n",
+			info.pos_x, info.pos_y);
+}
+
+static ssize_t overlay_position_store(struct omap_overlay *ovl,
+		const char *buf, size_t size)
+{
+	int r;
+	char *last;
+	struct omap_overlay_info info;
+
+	ovl->get_overlay_info(ovl, &info);
+
+	info.pos_x = simple_strtoul(buf, &last, 10);
+	++last;
+	if (last - buf >= size)
+		return -EINVAL;
+
+	info.pos_y = simple_strtoul(last, &last, 10);
+
+	r = ovl->set_overlay_info(ovl, &info);
+	if (r)
+		return r;
+
+	if (ovl->manager) {
+		r = ovl->manager->apply(ovl->manager);
+		if (r)
+			return r;
+	}
+
+	return size;
+}
+
+static ssize_t overlay_output_size_show(struct omap_overlay *ovl, char *buf)
+{
+	struct omap_overlay_info info;
+
+	ovl->get_overlay_info(ovl, &info);
+
+	return snprintf(buf, PAGE_SIZE, "%d,%d\n",
+			info.out_width, info.out_height);
+}
+
+static ssize_t overlay_output_size_store(struct omap_overlay *ovl,
+		const char *buf, size_t size)
+{
+	int r;
+	char *last;
+	struct omap_overlay_info info;
+
+	ovl->get_overlay_info(ovl, &info);
+
+	info.out_width = simple_strtoul(buf, &last, 10);
+	++last;
+	if (last - buf >= size)
+		return -EINVAL;
+
+	info.out_height = simple_strtoul(last, &last, 10);
+
+	r = ovl->set_overlay_info(ovl, &info);
+	if (r)
+		return r;
+
+	if (ovl->manager) {
+		r = ovl->manager->apply(ovl->manager);
+		if (r)
+			return r;
+	}
+
+	return size;
+}
+
+static ssize_t overlay_enabled_show(struct omap_overlay *ovl, char *buf)
+{
+	return snprintf(buf, PAGE_SIZE, "%d\n", ovl->is_enabled(ovl));
+}
+
+static ssize_t overlay_enabled_store(struct omap_overlay *ovl, const char *buf,
+		size_t size)
+{
+	int r;
+	bool enable;
+
+	r = strtobool(buf, &enable);
+	if (r)
+		return r;
+
+	if (enable)
+		r = ovl->enable(ovl);
+	else
+		r = ovl->disable(ovl);
+
+	if (r)
+		return r;
+
+	return size;
+}
+
+static ssize_t overlay_global_alpha_show(struct omap_overlay *ovl, char *buf)
+{
+	struct omap_overlay_info info;
+
+	ovl->get_overlay_info(ovl, &info);
+
+	return snprintf(buf, PAGE_SIZE, "%d\n",
+			info.global_alpha);
+}
+
+static ssize_t overlay_global_alpha_store(struct omap_overlay *ovl,
+		const char *buf, size_t size)
+{
+	int r;
+	u8 alpha;
+	struct omap_overlay_info info;
+
+	if ((ovl->caps & OMAP_DSS_OVL_CAP_GLOBAL_ALPHA) == 0)
+		return -ENODEV;
+
+	r = kstrtou8(buf, 0, &alpha);
+	if (r)
+		return r;
+
+	ovl->get_overlay_info(ovl, &info);
+
+	info.global_alpha = alpha;
+
+	r = ovl->set_overlay_info(ovl, &info);
+	if (r)
+		return r;
+
+	if (ovl->manager) {
+		r = ovl->manager->apply(ovl->manager);
+		if (r)
+			return r;
+	}
+
+	return size;
+}
+
+static ssize_t overlay_pre_mult_alpha_show(struct omap_overlay *ovl,
+		char *buf)
+{
+	struct omap_overlay_info info;
+
+	ovl->get_overlay_info(ovl, &info);
+
+	return snprintf(buf, PAGE_SIZE, "%d\n",
+			info.pre_mult_alpha);
+}
+
+static ssize_t overlay_pre_mult_alpha_store(struct omap_overlay *ovl,
+		const char *buf, size_t size)
+{
+	int r;
+	u8 alpha;
+	struct omap_overlay_info info;
+
+	if ((ovl->caps & OMAP_DSS_OVL_CAP_PRE_MULT_ALPHA) == 0)
+		return -ENODEV;
+
+	r = kstrtou8(buf, 0, &alpha);
+	if (r)
+		return r;
+
+	ovl->get_overlay_info(ovl, &info);
+
+	info.pre_mult_alpha = alpha;
+
+	r = ovl->set_overlay_info(ovl, &info);
+	if (r)
+		return r;
+
+	if (ovl->manager) {
+		r = ovl->manager->apply(ovl->manager);
+		if (r)
+			return r;
+	}
+
+	return size;
+}
+
+static ssize_t overlay_zorder_show(struct omap_overlay *ovl, char *buf)
+{
+	struct omap_overlay_info info;
+
+	ovl->get_overlay_info(ovl, &info);
+
+	return snprintf(buf, PAGE_SIZE, "%d\n", info.zorder);
+}
+
+static ssize_t overlay_zorder_store(struct omap_overlay *ovl,
+		const char *buf, size_t size)
+{
+	int r;
+	u8 zorder;
+	struct omap_overlay_info info;
+
+	if ((ovl->caps & OMAP_DSS_OVL_CAP_ZORDER) == 0)
+		return -ENODEV;
+
+	r = kstrtou8(buf, 0, &zorder);
+	if (r)
+		return r;
+
+	ovl->get_overlay_info(ovl, &info);
+
+	info.zorder = zorder;
+
+	r = ovl->set_overlay_info(ovl, &info);
+	if (r)
+		return r;
+
+	if (ovl->manager) {
+		r = ovl->manager->apply(ovl->manager);
+		if (r)
+			return r;
+	}
+
+	return size;
+}
+
+struct overlay_attribute {
+	struct attribute attr;
+	ssize_t (*show)(struct omap_overlay *, char *);
+	ssize_t	(*store)(struct omap_overlay *, const char *, size_t);
+};
+
+#define OVERLAY_ATTR(_name, _mode, _show, _store) \
+	struct overlay_attribute overlay_attr_##_name = \
+	__ATTR(_name, _mode, _show, _store)
+
+static OVERLAY_ATTR(name, S_IRUGO, overlay_name_show, NULL);
+static OVERLAY_ATTR(manager, S_IRUGO|S_IWUSR,
+		overlay_manager_show, overlay_manager_store);
+static OVERLAY_ATTR(input_size, S_IRUGO, overlay_input_size_show, NULL);
+static OVERLAY_ATTR(screen_width, S_IRUGO, overlay_screen_width_show, NULL);
+static OVERLAY_ATTR(position, S_IRUGO|S_IWUSR,
+		overlay_position_show, overlay_position_store);
+static OVERLAY_ATTR(output_size, S_IRUGO|S_IWUSR,
+		overlay_output_size_show, overlay_output_size_store);
+static OVERLAY_ATTR(enabled, S_IRUGO|S_IWUSR,
+		overlay_enabled_show, overlay_enabled_store);
+static OVERLAY_ATTR(global_alpha, S_IRUGO|S_IWUSR,
+		overlay_global_alpha_show, overlay_global_alpha_store);
+static OVERLAY_ATTR(pre_mult_alpha, S_IRUGO|S_IWUSR,
+		overlay_pre_mult_alpha_show,
+		overlay_pre_mult_alpha_store);
+static OVERLAY_ATTR(zorder, S_IRUGO|S_IWUSR,
+		overlay_zorder_show, overlay_zorder_store);
+
+static struct attribute *overlay_sysfs_attrs[] = {
+	&overlay_attr_name.attr,
+	&overlay_attr_manager.attr,
+	&overlay_attr_input_size.attr,
+	&overlay_attr_screen_width.attr,
+	&overlay_attr_position.attr,
+	&overlay_attr_output_size.attr,
+	&overlay_attr_enabled.attr,
+	&overlay_attr_global_alpha.attr,
+	&overlay_attr_pre_mult_alpha.attr,
+	&overlay_attr_zorder.attr,
+	NULL
+};
+
+static ssize_t overlay_attr_show(struct kobject *kobj, struct attribute *attr,
+		char *buf)
+{
+	struct omap_overlay *overlay;
+	struct overlay_attribute *overlay_attr;
+
+	overlay = container_of(kobj, struct omap_overlay, kobj);
+	overlay_attr = container_of(attr, struct overlay_attribute, attr);
+
+	if (!overlay_attr->show)
+		return -ENOENT;
+
+	return overlay_attr->show(overlay, buf);
+}
+
+static ssize_t overlay_attr_store(struct kobject *kobj, struct attribute *attr,
+		const char *buf, size_t size)
+{
+	struct omap_overlay *overlay;
+	struct overlay_attribute *overlay_attr;
+
+	overlay = container_of(kobj, struct omap_overlay, kobj);
+	overlay_attr = container_of(attr, struct overlay_attribute, attr);
+
+	if (!overlay_attr->store)
+		return -ENOENT;
+
+	return overlay_attr->store(overlay, buf, size);
+}
+
+static const struct sysfs_ops overlay_sysfs_ops = {
+	.show = overlay_attr_show,
+	.store = overlay_attr_store,
+};
+
+static struct kobj_type overlay_ktype = {
+	.sysfs_ops = &overlay_sysfs_ops,
+	.default_attrs = overlay_sysfs_attrs,
+};
+
+int dss_overlay_kobj_init(struct omap_overlay *ovl,
+		struct platform_device *pdev)
+{
+	return kobject_init_and_add(&ovl->kobj, &overlay_ktype,
+			&pdev->dev.kobj, "overlay%d", ovl->id);
+}
+
+void dss_overlay_kobj_uninit(struct omap_overlay *ovl)
+{
+	kobject_del(&ovl->kobj);
+	kobject_put(&ovl->kobj);
+}