1 files changed, 267 insertions, 0 deletions

diff --git a/drivers/video/fbdev/omap2/omapfb/dss/output.c b/drivers/video/fbdev/omap2/omapfb/dss/output.c
new file mode 100644
index 000000000000..16072159bd24
--- /dev/null
+++ b/drivers/video/fbdev/omap2/omapfb/dss/output.c
@@ -0,0 +1,267 @@
+/*
+ * Copyright (C) 2012 Texas Instruments Ltd
+ * Author: Archit Taneja <archit@ti.com>
+ *
+ * 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/>.
+ */
+
+#include <linux/kernel.h>
+#include <linux/module.h>
+#include <linux/platform_device.h>
+#include <linux/slab.h>
+#include <linux/of.h>
+
+#include <video/omapdss.h>
+
+#include "dss.h"
+
+static LIST_HEAD(output_list);
+static DEFINE_MUTEX(output_lock);
+
+int omapdss_output_set_device(struct omap_dss_device *out,
+                struct omap_dss_device *dssdev)
+{
+        int r;
+
+        mutex_lock(&output_lock);
+
+        if (out->dst) {
+                DSSERR("output already has device %s connected to it\n",
+                        out->dst->name);
+                r = -EINVAL;
+                goto err;
+        }
+
+        if (out->output_type != dssdev->type) {
+                DSSERR("output type and display type don't match\n");
+                r = -EINVAL;
+                goto err;
+        }
+
+        out->dst = dssdev;
+        dssdev->src = out;
+
+        mutex_unlock(&output_lock);
+
+        return 0;
+err:
+        mutex_unlock(&output_lock);
+
+        return r;
+}
+EXPORT_SYMBOL(omapdss_output_set_device);
+
+int omapdss_output_unset_device(struct omap_dss_device *out)
+{
+        int r;
+
+        mutex_lock(&output_lock);
+
+        if (!out->dst) {
+                DSSERR("output doesn't have a device connected to it\n");
+                r = -EINVAL;
+                goto err;
+        }
+
+        if (out->dst->state != OMAP_DSS_DISPLAY_DISABLED) {
+                DSSERR("device %s is not disabled, cannot unset device\n",
+                                out->dst->name);
+                r = -EINVAL;
+                goto err;
+        }
+
+        out->dst->src = NULL;
+        out->dst = NULL;
+
+        mutex_unlock(&output_lock);
+
+        return 0;
+err:
+        mutex_unlock(&output_lock);
+
+        return r;
+}
+EXPORT_SYMBOL(omapdss_output_unset_device);
+
+int omapdss_register_output(struct omap_dss_device *out)
+{
+        list_add_tail(&out->list, &output_list);
+        return 0;
+}
+EXPORT_SYMBOL(omapdss_register_output);
+
+void omapdss_unregister_output(struct omap_dss_device *out)
+{
+        list_del(&out->list);
+}
+EXPORT_SYMBOL(omapdss_unregister_output);
+
+struct omap_dss_device *omap_dss_get_output(enum omap_dss_output_id id)
+{
+        struct omap_dss_device *out;
+
+        list_for_each_entry(out, &output_list, list) {
+                if (out->id == id)
+                        return out;
+        }
+
+        return NULL;
+}
+EXPORT_SYMBOL(omap_dss_get_output);
+
+struct omap_dss_device *omap_dss_find_output(const char *name)
+{
+        struct omap_dss_device *out;
+
+        list_for_each_entry(out, &output_list, list) {
+                if (strcmp(out->name, name) == 0)
+                        return omap_dss_get_device(out);
+        }
+
+        return NULL;
+}
+EXPORT_SYMBOL(omap_dss_find_output);
+
+struct omap_dss_device *omap_dss_find_output_by_port_node(struct device_node *port)
+{
+        struct device_node *src_node;
+        struct omap_dss_device *out;
+        u32 reg;
+
+        src_node = dss_of_port_get_parent_device(port);
+        if (!src_node)
+                return NULL;
+
+        reg = dss_of_port_get_port_number(port);
+
+        list_for_each_entry(out, &output_list, list) {
+                if (out->dev->of_node == src_node && out->port_num == reg) {
+                        of_node_put(src_node);
+                        return omap_dss_get_device(out);
+                }
+        }
+
+        of_node_put(src_node);
+
+        return NULL;
+}
+EXPORT_SYMBOL(omap_dss_find_output_by_port_node);
+
+struct omap_dss_device *omapdss_find_output_from_display(struct omap_dss_device *dssdev)
+{
+        while (dssdev->src)
+                dssdev = dssdev->src;
+
+        if (dssdev->id != 0)
+                return omap_dss_get_device(dssdev);
+
+        return NULL;
+}
+EXPORT_SYMBOL(omapdss_find_output_from_display);
+
+struct omap_overlay_manager *omapdss_find_mgr_from_display(struct omap_dss_device *dssdev)
+{
+        struct omap_dss_device *out;
+        struct omap_overlay_manager *mgr;
+
+        out = omapdss_find_output_from_display(dssdev);
+
+        if (out == NULL)
+                return NULL;
+
+        mgr = out->manager;
+
+        omap_dss_put_device(out);
+
+        return mgr;
+}
+EXPORT_SYMBOL(omapdss_find_mgr_from_display);
+
+static const struct dss_mgr_ops *dss_mgr_ops;
+
+int dss_install_mgr_ops(const struct dss_mgr_ops *mgr_ops)
+{
+        if (dss_mgr_ops)
+                return -EBUSY;
+
+        dss_mgr_ops = mgr_ops;
+
+        return 0;
+}
+EXPORT_SYMBOL(dss_install_mgr_ops);
+
+void dss_uninstall_mgr_ops(void)
+{
+        dss_mgr_ops = NULL;
+}
+EXPORT_SYMBOL(dss_uninstall_mgr_ops);
+
+int dss_mgr_connect(struct omap_overlay_manager *mgr,
+                struct omap_dss_device *dst)
+{
+        return dss_mgr_ops->connect(mgr, dst);
+}
+EXPORT_SYMBOL(dss_mgr_connect);
+
+void dss_mgr_disconnect(struct omap_overlay_manager *mgr,
+                struct omap_dss_device *dst)
+{
+        dss_mgr_ops->disconnect(mgr, dst);
+}
+EXPORT_SYMBOL(dss_mgr_disconnect);
+
+void dss_mgr_set_timings(struct omap_overlay_manager *mgr,
+                const struct omap_video_timings *timings)
+{
+        dss_mgr_ops->set_timings(mgr, timings);
+}
+EXPORT_SYMBOL(dss_mgr_set_timings);
+
+void dss_mgr_set_lcd_config(struct omap_overlay_manager *mgr,
+                const struct dss_lcd_mgr_config *config)
+{
+        dss_mgr_ops->set_lcd_config(mgr, config);
+}
+EXPORT_SYMBOL(dss_mgr_set_lcd_config);
+
+int dss_mgr_enable(struct omap_overlay_manager *mgr)
+{
+        return dss_mgr_ops->enable(mgr);
+}
+EXPORT_SYMBOL(dss_mgr_enable);
+
+void dss_mgr_disable(struct omap_overlay_manager *mgr)
+{
+        dss_mgr_ops->disable(mgr);
+}
+EXPORT_SYMBOL(dss_mgr_disable);
+
+void dss_mgr_start_update(struct omap_overlay_manager *mgr)
+{
+        dss_mgr_ops->start_update(mgr);
+}
+EXPORT_SYMBOL(dss_mgr_start_update);
+
+int dss_mgr_register_framedone_handler(struct omap_overlay_manager *mgr,
+                void (*handler)(void *), void *data)
+{
+        return dss_mgr_ops->register_framedone_handler(mgr, handler, data);
+}
+EXPORT_SYMBOL(dss_mgr_register_framedone_handler);
+
+void dss_mgr_unregister_framedone_handler(struct omap_overlay_manager *mgr,
+                void (*handler)(void *), void *data)
+{
+        dss_mgr_ops->unregister_framedone_handler(mgr, handler, data);
+}
+EXPORT_SYMBOL(dss_mgr_unregister_framedone_handler);