text: /*
   * 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 "MANAGER"
  
  #include <linux/kernel.h>
  #include <linux/slab.h>
  #include <linux/module.h>
  #include <linux/platform_device.h>
  #include <linux/jiffies.h>
  
  #include <video/omapfb_dss.h>
  
  #include "dss.h"
  #include "dss_features.h"
  
  static ssize_t manager_name_show(struct omap_overlay_manager *mgr, char *buf)
  {
  	return snprintf(buf, PAGE_SIZE, "%s\n", mgr->name);
  }
  
  static ssize_t manager_display_show(struct omap_overlay_manager *mgr, char *buf)
  {
  	struct omap_dss_device *dssdev = mgr->get_device(mgr);
  
  	return snprintf(buf, PAGE_SIZE, "%s\n", dssdev ?
  			dssdev->name : "<none>");
  }
  
  static int manager_display_match(struct omap_dss_device *dssdev, void *data)
  {
  	const char *str = data;
  
  	return sysfs_streq(dssdev->name, str);
  }
  
  static ssize_t manager_display_store(struct omap_overlay_manager *mgr,
  		const char *buf, size_t size)
  {
  	int r = 0;
  	size_t len = size;
  	struct omap_dss_device *dssdev = NULL;
  	struct omap_dss_device *old_dssdev;
  
  	if (buf[size-1] == '\n')
  		--len;
  
  	if (len > 0)
  		dssdev = omap_dss_find_device((void *)buf,
  			manager_display_match);
  
  	if (len > 0 && dssdev == NULL)
  		return -EINVAL;
  
  	if (dssdev) {
  		DSSDBG("display %s found\n", dssdev->name);
  
  		if (omapdss_device_is_connected(dssdev)) {
  			DSSERR("new display is already connected\n");
  			r = -EINVAL;
  			goto put_device;
  		}
  
  		if (omapdss_device_is_enabled(dssdev)) {
  			DSSERR("new display is not disabled\n");
  			r = -EINVAL;
  			goto put_device;
  		}
  	}
  
  	old_dssdev = mgr->get_device(mgr);
  	if (old_dssdev) {
  		if (omapdss_device_is_enabled(old_dssdev)) {
  			DSSERR("old display is not disabled\n");
  			r = -EINVAL;
  			goto put_device;
  		}
  
  		old_dssdev->driver->disconnect(old_dssdev);
  	}
  
  	if (dssdev) {
  		r = dssdev->driver->connect(dssdev);
  		if (r) {
  			DSSERR("failed to connect new device\n");
  			goto put_device;
  		}
  
  		old_dssdev = mgr->get_device(mgr);
  		if (old_dssdev != dssdev) {
  			DSSERR("failed to connect device to this manager\n");
  			dssdev->driver->disconnect(dssdev);
  			goto put_device;
  		}
  
  		r = mgr->apply(mgr);
  		if (r) {
  			DSSERR("failed to apply dispc config\n");
  			goto put_device;
  		}
  	}
  
  put_device:
  	if (dssdev)
  		omap_dss_put_device(dssdev);
  
  	return r ? r : size;
  }
  
  static ssize_t manager_default_color_show(struct omap_overlay_manager *mgr,
  					  char *buf)
  {
  	struct omap_overlay_manager_info info;
  
  	mgr->get_manager_info(mgr, &info);
  
  	return snprintf(buf, PAGE_SIZE, "%#x\n", info.default_color);
  }
  
  static ssize_t manager_default_color_store(struct omap_overlay_manager *mgr,
  					   const char *buf, size_t size)
  {
  	struct omap_overlay_manager_info info;
  	u32 color;
  	int r;
  
  	r = kstrtouint(buf, 0, &color);
  	if (r)
  		return r;
  
  	mgr->get_manager_info(mgr, &info);
  
  	info.default_color = color;
  
  	r = mgr->set_manager_info(mgr, &info);
  	if (r)
  		return r;
  
  	r = mgr->apply(mgr);
  	if (r)
  		return r;
  
  	return size;
  }
  
  static const char *trans_key_type_str[] = {
  	"gfx-destination",
  	"video-source",
  };
  
  static ssize_t manager_trans_key_type_show(struct omap_overlay_manager *mgr,
  					   char *buf)
  {
  	enum omap_dss_trans_key_type key_type;
  	struct omap_overlay_manager_info info;
  
  	mgr->get_manager_info(mgr, &info);
  
  	key_type = info.trans_key_type;
  	BUG_ON(key_type >= ARRAY_SIZE(trans_key_type_str));
  
  	return snprintf(buf, PAGE_SIZE, "%s\n", trans_key_type_str[key_type]);
  }
  
  static ssize_t manager_trans_key_type_store(struct omap_overlay_manager *mgr,
  					    const char *buf, size_t size)
  {
  	struct omap_overlay_manager_info info;
  	int r;
  
  	r = sysfs_match_string(trans_key_type_str, buf);
  	if (r < 0)
  		return r;
  
  	mgr->get_manager_info(mgr, &info);
  
  	info.trans_key_type = r;
  
  	r = mgr->set_manager_info(mgr, &info);
  	if (r)
  		return r;
  
  	r = mgr->apply(mgr);
  	if (r)
  		return r;
  
  	return size;
  }
  
  static ssize_t manager_trans_key_value_show(struct omap_overlay_manager *mgr,
  					    char *buf)
  {
  	struct omap_overlay_manager_info info;
  
  	mgr->get_manager_info(mgr, &info);
  
  	return snprintf(buf, PAGE_SIZE, "%#x\n", info.trans_key);
  }
  
  static ssize_t manager_trans_key_value_store(struct omap_overlay_manager *mgr,
  					     const char *buf, size_t size)
  {
  	struct omap_overlay_manager_info info;
  	u32 key_value;
  	int r;
  
  	r = kstrtouint(buf, 0, &key_value);
  	if (r)
  		return r;
  
  	mgr->get_manager_info(mgr, &info);
  
  	info.trans_key = key_value;
  
  	r = mgr->set_manager_info(mgr, &info);
  	if (r)
  		return r;
  
  	r = mgr->apply(mgr);
  	if (r)
  		return r;
  
  	return size;
  }
  
  static ssize_t manager_trans_key_enabled_show(struct omap_overlay_manager *mgr,
  					      char *buf)
  {
  	struct omap_overlay_manager_info info;
  
  	mgr->get_manager_info(mgr, &info);
  
  	return snprintf(buf, PAGE_SIZE, "%d\n", info.trans_enabled);
  }
  
  static ssize_t manager_trans_key_enabled_store(struct omap_overlay_manager *mgr,
  					       const char *buf, size_t size)
  {
  	struct omap_overlay_manager_info info;
  	bool enable;
  	int r;
  
  	r = strtobool(buf, &enable);
  	if (r)
  		return r;
  
  	mgr->get_manager_info(mgr, &info);
  
  	info.trans_enabled = enable;
  
  	r = mgr->set_manager_info(mgr, &info);
  	if (r)
  		return r;
  
  	r = mgr->apply(mgr);
  	if (r)
  		return r;
  
  	return size;
  }
  
  static ssize_t manager_alpha_blending_enabled_show(
  		struct omap_overlay_manager *mgr, char *buf)
  {
  	struct omap_overlay_manager_info info;
  
  	if(!dss_has_feature(FEAT_ALPHA_FIXED_ZORDER))
  		return -ENODEV;
  
  	mgr->get_manager_info(mgr, &info);
  
  	return snprintf(buf, PAGE_SIZE, "%d\n",
  		info.partial_alpha_enabled);
  }
  
  static ssize_t manager_alpha_blending_enabled_store(
  		struct omap_overlay_manager *mgr,
  		const char *buf, size_t size)
  {
  	struct omap_overlay_manager_info info;
  	bool enable;
  	int r;
  
  	if(!dss_has_feature(FEAT_ALPHA_FIXED_ZORDER))
  		return -ENODEV;
  
  	r = strtobool(buf, &enable);
  	if (r)
  		return r;
  
  	mgr->get_manager_info(mgr, &info);
  
  	info.partial_alpha_enabled = enable;
  
  	r = mgr->set_manager_info(mgr, &info);
  	if (r)
  		return r;
  
  	r = mgr->apply(mgr);
  	if (r)
  		return r;
  
  	return size;
  }
  
  static ssize_t manager_cpr_enable_show(struct omap_overlay_manager *mgr,
  		char *buf)
  {
  	struct omap_overlay_manager_info info;
  
  	mgr->get_manager_info(mgr, &info);
  
  	return snprintf(buf, PAGE_SIZE, "%d\n", info.cpr_enable);
  }
  
  static ssize_t manager_cpr_enable_store(struct omap_overlay_manager *mgr,
  		const char *buf, size_t size)
  {
  	struct omap_overlay_manager_info info;
  	int r;
  	bool enable;
  
  	if (!dss_has_feature(FEAT_CPR))
  		return -ENODEV;
  
  	r = strtobool(buf, &enable);
  	if (r)
  		return r;
  
  	mgr->get_manager_info(mgr, &info);
  
  	if (info.cpr_enable == enable)
  		return size;
  
  	info.cpr_enable = enable;
  
  	r = mgr->set_manager_info(mgr, &info);
  	if (r)
  		return r;
  
  	r = mgr->apply(mgr);
  	if (r)
  		return r;
  
  	return size;
  }
  
  static ssize_t manager_cpr_coef_show(struct omap_overlay_manager *mgr,
  		char *buf)
  {
  	struct omap_overlay_manager_info info;
  
  	mgr->get_manager_info(mgr, &info);
  
  	return snprintf(buf, PAGE_SIZE,
  			"%d %d %d %d %d %d %d %d %d\n",
  			info.cpr_coefs.rr,
  			info.cpr_coefs.rg,
  			info.cpr_coefs.rb,
  			info.cpr_coefs.gr,
  			info.cpr_coefs.gg,
  			info.cpr_coefs.gb,
  			info.cpr_coefs.br,
  			info.cpr_coefs.bg,
  			info.cpr_coefs.bb);
  }
  
  static ssize_t manager_cpr_coef_store(struct omap_overlay_manager *mgr,
  		const char *buf, size_t size)
  {
  	struct omap_overlay_manager_info info;
  	struct omap_dss_cpr_coefs coefs;
  	int r, i;
  	s16 *arr;
  
  	if (!dss_has_feature(FEAT_CPR))
  		return -ENODEV;
  
  	if (sscanf(buf, "%hd %hd %hd %hd %hd %hd %hd %hd %hd",
  				&coefs.rr, &coefs.rg, &coefs.rb,
  				&coefs.gr, &coefs.gg, &coefs.gb,
  				&coefs.br, &coefs.bg, &coefs.bb) != 9)
  		return -EINVAL;
  
  	arr = (s16[]){ coefs.rr, coefs.rg, coefs.rb,
  		coefs.gr, coefs.gg, coefs.gb,
  		coefs.br, coefs.bg, coefs.bb };
  
  	for (i = 0; i < 9; ++i) {
  		if (arr[i] < -512 || arr[i] > 511)
  			return -EINVAL;
  	}
  
  	mgr->get_manager_info(mgr, &info);
  
  	info.cpr_coefs = coefs;
  
  	r = mgr->set_manager_info(mgr, &info);
  	if (r)
  		return r;
  
  	r = mgr->apply(mgr);
  	if (r)
  		return r;
  
  	return size;
  }
  
  struct manager_attribute {
  	struct attribute attr;
  	ssize_t (*show)(struct omap_overlay_manager *, char *);
  	ssize_t	(*store)(struct omap_overlay_manager *, const char *, size_t);
  };
  
  #define MANAGER_ATTR(_name, _mode, _show, _store) \
  	struct manager_attribute manager_attr_##_name = \
  	__ATTR(_name, _mode, _show, _store)
  
  static MANAGER_ATTR(name, S_IRUGO, manager_name_show, NULL);
  static MANAGER_ATTR(display, S_IRUGO|S_IWUSR,
  		manager_display_show, manager_display_store);
  static MANAGER_ATTR(default_color, S_IRUGO|S_IWUSR,
  		manager_default_color_show, manager_default_color_store);
  static MANAGER_ATTR(trans_key_type, S_IRUGO|S_IWUSR,
  		manager_trans_key_type_show, manager_trans_key_type_store);
  static MANAGER_ATTR(trans_key_value, S_IRUGO|S_IWUSR,
  		manager_trans_key_value_show, manager_trans_key_value_store);
  static MANAGER_ATTR(trans_key_enabled, S_IRUGO|S_IWUSR,
  		manager_trans_key_enabled_show,
  		manager_trans_key_enabled_store);
  static MANAGER_ATTR(alpha_blending_enabled, S_IRUGO|S_IWUSR,
  		manager_alpha_blending_enabled_show,
  		manager_alpha_blending_enabled_store);
  static MANAGER_ATTR(cpr_enable, S_IRUGO|S_IWUSR,
  		manager_cpr_enable_show,
  		manager_cpr_enable_store);
  static MANAGER_ATTR(cpr_coef, S_IRUGO|S_IWUSR,
  		manager_cpr_coef_show,
  		manager_cpr_coef_store);
  
  
  static struct attribute *manager_sysfs_attrs[] = {
  	&manager_attr_name.attr,
  	&manager_attr_display.attr,
  	&manager_attr_default_color.attr,
  	&manager_attr_trans_key_type.attr,
  	&manager_attr_trans_key_value.attr,
  	&manager_attr_trans_key_enabled.attr,
  	&manager_attr_alpha_blending_enabled.attr,
  	&manager_attr_cpr_enable.attr,
  	&manager_attr_cpr_coef.attr,
  	NULL
  };
  
  static ssize_t manager_attr_show(struct kobject *kobj, struct attribute *attr,
  		char *buf)
  {
  	struct omap_overlay_manager *manager;
  	struct manager_attribute *manager_attr;
  
  	manager = container_of(kobj, struct omap_overlay_manager, kobj);
  	manager_attr = container_of(attr, struct manager_attribute, attr);
  
  	if (!manager_attr->show)
  		return -ENOENT;
  
  	return manager_attr->show(manager, buf);
  }
  
  static ssize_t manager_attr_store(struct kobject *kobj, struct attribute *attr,
  		const char *buf, size_t size)
  {
  	struct omap_overlay_manager *manager;
  	struct manager_attribute *manager_attr;
  
  	manager = container_of(kobj, struct omap_overlay_manager, kobj);
  	manager_attr = container_of(attr, struct manager_attribute, attr);
  
  	if (!manager_attr->store)
  		return -ENOENT;
  
  	return manager_attr->store(manager, buf, size);
  }
  
  static const struct sysfs_ops manager_sysfs_ops = {
  	.show = manager_attr_show,
  	.store = manager_attr_store,
  };
  
  static struct kobj_type manager_ktype = {
  	.sysfs_ops = &manager_sysfs_ops,
  	.default_attrs = manager_sysfs_attrs,
  };
  
  int dss_manager_kobj_init(struct omap_overlay_manager *mgr,
  		struct platform_device *pdev)
  {
  	return kobject_init_and_add(&mgr->kobj, &manager_ktype,
  			&pdev->dev.kobj, "manager%d", mgr->id);
  }
  
  void dss_manager_kobj_uninit(struct omap_overlay_manager *mgr)
  {
  	kobject_del(&mgr->kobj);
  	kobject_put(&mgr->kobj);
  
  	memset(&mgr->kobj, 0, sizeof(mgr->kobj));
  }
  