manager.c 27.9 KB
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/*
 * linux/drivers/video/omap2/dss/manager.c
 *
 * 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>
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#include <linux/slab.h>
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#include <linux/module.h>
#include <linux/platform_device.h>
#include <linux/spinlock.h>
#include <linux/jiffies.h>

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#include <video/omapdss.h>
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#include <plat/cpu.h>

#include "dss.h"
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#include "dss_features.h"
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static int num_managers;
static struct list_head manager_list;

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)
{
	return snprintf(buf, PAGE_SIZE, "%s\n",
			mgr->device ? mgr->device->name : "<none>");
}

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;

	int match(struct omap_dss_device *dssdev, void *data)
	{
		const char *str = data;
		return sysfs_streq(dssdev->name, str);
	}

	if (buf[size-1] == '\n')
		--len;

	if (len > 0)
		dssdev = omap_dss_find_device((void *)buf, match);

	if (len > 0 && dssdev == NULL)
		return -EINVAL;

	if (dssdev)
		DSSDBG("display %s found\n", dssdev->name);

	if (mgr->device) {
		r = mgr->unset_device(mgr);
		if (r) {
			DSSERR("failed to unset display\n");
			goto put_device;
		}
	}

	if (dssdev) {
		r = mgr->set_device(mgr, dssdev);
		if (r) {
			DSSERR("failed to set manager\n");
			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)
{
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	return snprintf(buf, PAGE_SIZE, "%#x\n", mgr->info.default_color);
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}

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;

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	r = kstrtouint(buf, 0, &color);
	if (r)
		return r;
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	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;

	key_type = mgr->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)
{
	enum omap_dss_trans_key_type key_type;
	struct omap_overlay_manager_info info;
	int r;

	for (key_type = OMAP_DSS_COLOR_KEY_GFX_DST;
			key_type < ARRAY_SIZE(trans_key_type_str); key_type++) {
		if (sysfs_streq(buf, trans_key_type_str[key_type]))
			break;
	}

	if (key_type == ARRAY_SIZE(trans_key_type_str))
		return -EINVAL;

	mgr->get_manager_info(mgr, &info);

	info.trans_key_type = key_type;

	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)
{
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	return snprintf(buf, PAGE_SIZE, "%#x\n", mgr->info.trans_key);
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}

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;

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	r = kstrtouint(buf, 0, &key_value);
	if (r)
		return r;
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	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)
{
	return snprintf(buf, PAGE_SIZE, "%d\n", mgr->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;
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	bool enable;
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	int r;

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	r = strtobool(buf, &enable);
	if (r)
		return r;
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	mgr->get_manager_info(mgr, &info);

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	info.trans_enabled = enable;
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	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)
{
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	WARN_ON(!dss_has_feature(FEAT_ALPHA_FIXED_ZORDER));

	return snprintf(buf, PAGE_SIZE, "%d\n",
		mgr->info.partial_alpha_enabled);
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}

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;
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	bool enable;
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	int r;

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	WARN_ON(!dss_has_feature(FEAT_ALPHA_FIXED_ZORDER));

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	r = strtobool(buf, &enable);
	if (r)
		return r;
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	mgr->get_manager_info(mgr, &info);

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	info.partial_alpha_enabled = enable;
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	r = mgr->set_manager_info(mgr, &info);
	if (r)
		return r;

	r = mgr->apply(mgr);
	if (r)
		return r;

	return size;
}

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static ssize_t manager_cpr_enable_show(struct omap_overlay_manager *mgr,
		char *buf)
{
	return snprintf(buf, PAGE_SIZE, "%d\n", mgr->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;

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	r = strtobool(buf, &enable);
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	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;
}

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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);
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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);
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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,
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	&manager_attr_cpr_enable.attr,
	&manager_attr_cpr_coef.attr,
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	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);
}

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static const struct sysfs_ops manager_sysfs_ops = {
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	.show = manager_attr_show,
	.store = manager_attr_store,
};

static struct kobj_type manager_ktype = {
	.sysfs_ops = &manager_sysfs_ops,
	.default_attrs = manager_sysfs_attrs,
};

/*
 * We have 4 levels of cache for the dispc settings. First two are in SW and
 * the latter two in HW.
 *
 * +--------------------+
 * |overlay/manager_info|
 * +--------------------+
 *          v
 *        apply()
 *          v
 * +--------------------+
 * |     dss_cache      |
 * +--------------------+
 *          v
 *      configure()
 *          v
 * +--------------------+
 * |  shadow registers  |
 * +--------------------+
 *          v
 * VFP or lcd/digit_enable
 *          v
 * +--------------------+
 * |      registers     |
 * +--------------------+
 */

struct overlay_cache_data {
	/* If true, cache changed, but not written to shadow registers. Set
	 * in apply(), cleared when registers written. */
	bool dirty;
	/* If true, shadow registers contain changed values not yet in real
	 * registers. Set when writing to shadow registers, cleared at
	 * VSYNC/EVSYNC */
	bool shadow_dirty;

	bool enabled;

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	struct omap_overlay_info info;
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	enum omap_channel channel;

	u32 fifo_low;
	u32 fifo_high;
};

struct manager_cache_data {
	/* If true, cache changed, but not written to shadow registers. Set
	 * in apply(), cleared when registers written. */
	bool dirty;
	/* If true, shadow registers contain changed values not yet in real
	 * registers. Set when writing to shadow registers, cleared at
	 * VSYNC/EVSYNC */
	bool shadow_dirty;

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	struct omap_overlay_manager_info info;
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	bool manual_update;
	bool do_manual_update;
};

static struct {
	spinlock_t lock;
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	struct overlay_cache_data overlay_cache[MAX_DSS_OVERLAYS];
	struct manager_cache_data manager_cache[MAX_DSS_MANAGERS];
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	bool irq_enabled;
} dss_cache;

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static bool ovl_manual_update(struct omap_overlay *ovl)
{
	return ovl->manager->device->caps & OMAP_DSS_DISPLAY_CAP_MANUAL_UPDATE;
}
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static bool mgr_manual_update(struct omap_overlay_manager *mgr)
{
	return mgr->device->caps & OMAP_DSS_DISPLAY_CAP_MANUAL_UPDATE;
}
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static int omap_dss_set_device(struct omap_overlay_manager *mgr,
		struct omap_dss_device *dssdev)
{
	int i;
	int r;

	if (dssdev->manager) {
		DSSERR("display '%s' already has a manager '%s'\n",
			       dssdev->name, dssdev->manager->name);
		return -EINVAL;
	}

	if ((mgr->supported_displays & dssdev->type) == 0) {
		DSSERR("display '%s' does not support manager '%s'\n",
			       dssdev->name, mgr->name);
		return -EINVAL;
	}

	for (i = 0; i < mgr->num_overlays; i++) {
		struct omap_overlay *ovl = mgr->overlays[i];

		if (ovl->manager != mgr || !ovl->info.enabled)
			continue;

		r = dss_check_overlay(ovl, dssdev);
		if (r)
			return r;
	}

	dssdev->manager = mgr;
	mgr->device = dssdev;
	mgr->device_changed = true;

	return 0;
}

static int omap_dss_unset_device(struct omap_overlay_manager *mgr)
{
	if (!mgr->device) {
		DSSERR("failed to unset display, display not set.\n");
		return -EINVAL;
	}

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	/*
	 * Don't allow currently enabled displays to have the overlay manager
	 * pulled out from underneath them
	 */
	if (mgr->device->state != OMAP_DSS_DISPLAY_DISABLED)
		return -EINVAL;

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	mgr->device->manager = NULL;
	mgr->device = NULL;
	mgr->device_changed = true;

	return 0;
}

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static int dss_mgr_wait_for_vsync(struct omap_overlay_manager *mgr)
{
	unsigned long timeout = msecs_to_jiffies(500);
	u32 irq;

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	if (mgr->device->type == OMAP_DISPLAY_TYPE_VENC) {
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		irq = DISPC_IRQ_EVSYNC_ODD;
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	} else if (mgr->device->type == OMAP_DISPLAY_TYPE_HDMI) {
		irq = DISPC_IRQ_EVSYNC_EVEN;
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	} else {
		if (mgr->id == OMAP_DSS_CHANNEL_LCD)
			irq = DISPC_IRQ_VSYNC;
		else
			irq = DISPC_IRQ_VSYNC2;
	}
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	return omap_dispc_wait_for_irq_interruptible_timeout(irq, timeout);
}

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static int dss_mgr_wait_for_go(struct omap_overlay_manager *mgr)
{
	unsigned long timeout = msecs_to_jiffies(500);
	struct manager_cache_data *mc;
	u32 irq;
	int r;
	int i;
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	struct omap_dss_device *dssdev = mgr->device;
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	if (!dssdev || dssdev->state != OMAP_DSS_DISPLAY_ACTIVE)
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		return 0;

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	if (mgr_manual_update(mgr))
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		return 0;

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	if (dssdev->type == OMAP_DISPLAY_TYPE_VENC
			|| dssdev->type == OMAP_DISPLAY_TYPE_HDMI) {
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		irq = DISPC_IRQ_EVSYNC_ODD | DISPC_IRQ_EVSYNC_EVEN;
	} else {
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		irq = (dssdev->manager->id == OMAP_DSS_CHANNEL_LCD) ?
			DISPC_IRQ_VSYNC : DISPC_IRQ_VSYNC2;
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	}

	mc = &dss_cache.manager_cache[mgr->id];
	i = 0;
	while (1) {
		unsigned long flags;
		bool shadow_dirty, dirty;

		spin_lock_irqsave(&dss_cache.lock, flags);
		dirty = mc->dirty;
		shadow_dirty = mc->shadow_dirty;
		spin_unlock_irqrestore(&dss_cache.lock, flags);

		if (!dirty && !shadow_dirty) {
			r = 0;
			break;
		}

		/* 4 iterations is the worst case:
		 * 1 - initial iteration, dirty = true (between VFP and VSYNC)
		 * 2 - first VSYNC, dirty = true
		 * 3 - dirty = false, shadow_dirty = true
		 * 4 - shadow_dirty = false */
		if (i++ == 3) {
			DSSERR("mgr(%d)->wait_for_go() not finishing\n",
					mgr->id);
			r = 0;
			break;
		}

		r = omap_dispc_wait_for_irq_interruptible_timeout(irq, timeout);
		if (r == -ERESTARTSYS)
			break;

		if (r) {
			DSSERR("mgr(%d)->wait_for_go() timeout\n", mgr->id);
			break;
		}
	}

	return r;
}

int dss_mgr_wait_for_go_ovl(struct omap_overlay *ovl)
{
	unsigned long timeout = msecs_to_jiffies(500);
	struct overlay_cache_data *oc;
	struct omap_dss_device *dssdev;
	u32 irq;
	int r;
	int i;

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	if (!ovl->manager)
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		return 0;

	dssdev = ovl->manager->device;

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	if (!dssdev || dssdev->state != OMAP_DSS_DISPLAY_ACTIVE)
		return 0;

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	if (ovl_manual_update(ovl))
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		return 0;

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	if (dssdev->type == OMAP_DISPLAY_TYPE_VENC
			|| dssdev->type == OMAP_DISPLAY_TYPE_HDMI) {
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		irq = DISPC_IRQ_EVSYNC_ODD | DISPC_IRQ_EVSYNC_EVEN;
	} else {
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		irq = (dssdev->manager->id == OMAP_DSS_CHANNEL_LCD) ?
			DISPC_IRQ_VSYNC : DISPC_IRQ_VSYNC2;
716 717 718 719 720 721 722 723 724 725 726 727 728 729 730 731 732 733 734 735 736 737 738 739 740 741 742 743 744 745 746 747 748 749 750 751 752 753 754 755 756 757 758 759 760 761 762 763 764 765
	}

	oc = &dss_cache.overlay_cache[ovl->id];
	i = 0;
	while (1) {
		unsigned long flags;
		bool shadow_dirty, dirty;

		spin_lock_irqsave(&dss_cache.lock, flags);
		dirty = oc->dirty;
		shadow_dirty = oc->shadow_dirty;
		spin_unlock_irqrestore(&dss_cache.lock, flags);

		if (!dirty && !shadow_dirty) {
			r = 0;
			break;
		}

		/* 4 iterations is the worst case:
		 * 1 - initial iteration, dirty = true (between VFP and VSYNC)
		 * 2 - first VSYNC, dirty = true
		 * 3 - dirty = false, shadow_dirty = true
		 * 4 - shadow_dirty = false */
		if (i++ == 3) {
			DSSERR("ovl(%d)->wait_for_go() not finishing\n",
					ovl->id);
			r = 0;
			break;
		}

		r = omap_dispc_wait_for_irq_interruptible_timeout(irq, timeout);
		if (r == -ERESTARTSYS)
			break;

		if (r) {
			DSSERR("ovl(%d)->wait_for_go() timeout\n", ovl->id);
			break;
		}
	}

	return r;
}

static int overlay_enabled(struct omap_overlay *ovl)
{
	return ovl->info.enabled && ovl->manager && ovl->manager->device;
}

static int configure_overlay(enum omap_plane plane)
{
766
	struct omap_overlay *ovl;
767
	struct overlay_cache_data *c;
768
	struct omap_overlay_info *oi;
769
	bool ilace, replication;
770 771 772 773 774
	int r;

	DSSDBGF("%d", plane);

	c = &dss_cache.overlay_cache[plane];
775
	oi = &c->info;
776 777

	if (!c->enabled) {
778
		dispc_ovl_enable(plane, 0);
779 780 781
		return 0;
	}

782 783 784 785 786 787
	ovl = omap_dss_get_overlay(plane);

	replication = dss_use_replication(ovl->manager->device, oi->color_mode);

	ilace = ovl->manager->device->type == OMAP_DISPLAY_TYPE_VENC;

788 789 790
	dispc_ovl_set_channel_out(plane, c->channel);

	r = dispc_ovl_setup(plane, oi, ilace, replication);
791 792
	if (r) {
		/* this shouldn't happen */
793 794
		DSSERR("dispc_ovl_setup failed for ovl %d\n", plane);
		dispc_ovl_enable(plane, 0);
795 796 797
		return r;
	}

798 799
	dispc_ovl_set_fifo_threshold(plane, c->fifo_low, c->fifo_high);

800
	dispc_ovl_enable(plane, 1);
801 802 803 804 805 806

	return 0;
}

static void configure_manager(enum omap_channel channel)
{
807
	struct omap_overlay_manager_info *mi;
808 809 810

	DSSDBGF("%d", channel);

811 812
	/* picking info from the cache */
	mi = &dss_cache.manager_cache[channel].info;
813

814
	dispc_mgr_setup(channel, mi);
815 816 817 818 819 820 821 822 823 824
}

/* configure_dispc() tries to write values from cache to shadow registers.
 * It writes only to those managers/overlays that are not busy.
 * returns 0 if everything could be written to shadow registers.
 * returns 1 if not everything could be written to shadow registers. */
static int configure_dispc(void)
{
	struct overlay_cache_data *oc;
	struct manager_cache_data *mc;
825 826
	const int num_ovls = dss_feat_get_num_ovls();
	const int num_mgrs = dss_feat_get_num_mgrs();
827 828
	int i;
	int r;
829 830
	bool mgr_busy[MAX_DSS_MANAGERS];
	bool mgr_go[MAX_DSS_MANAGERS];
831 832 833 834 835
	bool busy;

	r = 0;
	busy = false;

836
	for (i = 0; i < num_mgrs; i++) {
837
		mgr_busy[i] = dispc_mgr_go_busy(i);
838 839
		mgr_go[i] = false;
	}
840 841 842 843 844 845 846 847 848

	/* Commit overlay settings */
	for (i = 0; i < num_ovls; ++i) {
		oc = &dss_cache.overlay_cache[i];
		mc = &dss_cache.manager_cache[oc->channel];

		if (!oc->dirty)
			continue;

849
		if (mc->manual_update && !mc->do_manual_update)
850 851 852 853 854 855 856 857 858 859 860 861 862 863 864 865 866 867 868 869 870 871 872 873 874 875 876 877 878 879 880 881 882 883 884 885 886 887 888 889 890 891 892 893 894 895 896
			continue;

		if (mgr_busy[oc->channel]) {
			busy = true;
			continue;
		}

		r = configure_overlay(i);
		if (r)
			DSSERR("configure_overlay %d failed\n", i);

		oc->dirty = false;
		oc->shadow_dirty = true;
		mgr_go[oc->channel] = true;
	}

	/* Commit manager settings */
	for (i = 0; i < num_mgrs; ++i) {
		mc = &dss_cache.manager_cache[i];

		if (!mc->dirty)
			continue;

		if (mc->manual_update && !mc->do_manual_update)
			continue;

		if (mgr_busy[i]) {
			busy = true;
			continue;
		}

		configure_manager(i);
		mc->dirty = false;
		mc->shadow_dirty = true;
		mgr_go[i] = true;
	}

	/* set GO */
	for (i = 0; i < num_mgrs; ++i) {
		mc = &dss_cache.manager_cache[i];

		if (!mgr_go[i])
			continue;

		/* We don't need GO with manual update display. LCD iface will
		 * always be turned off after frame, and new settings will be
		 * taken in to use at next update */
897
		if (!mc->manual_update)
898
			dispc_mgr_go(i);
899 900 901 902 903 904 905 906 907 908
	}

	if (busy)
		r = 1;
	else
		r = 0;

	return r;
}

909
void dss_mgr_start_update(struct omap_overlay_manager *mgr)
910 911
{
	struct manager_cache_data *mc;
912
	struct overlay_cache_data *oc;
913
	const int num_ovls = dss_feat_get_num_ovls();
914
	const int num_mgrs = dss_feat_get_num_mgrs();
915 916 917 918
	int i;

	mc = &dss_cache.manager_cache[mgr->id];

919
	mc->do_manual_update = true;
920 921 922 923 924 925 926 927 928 929 930 931 932 933 934 935 936 937 938
	configure_dispc();
	mc->do_manual_update = false;

	for (i = 0; i < num_ovls; ++i) {
		oc = &dss_cache.overlay_cache[i];
		if (oc->channel != mgr->id)
			continue;

		oc->shadow_dirty = false;
	}

	for (i = 0; i < num_mgrs; ++i) {
		mc = &dss_cache.manager_cache[i];
		if (mgr->id != i)
			continue;

		mc->shadow_dirty = false;
	}

939
	mgr->enable(mgr);
940 941 942 943 944 945
}

static void dss_apply_irq_handler(void *data, u32 mask)
{
	struct manager_cache_data *mc;
	struct overlay_cache_data *oc;
946 947
	const int num_ovls = dss_feat_get_num_ovls();
	const int num_mgrs = dss_feat_get_num_mgrs();
948
	int i, r;
949
	bool mgr_busy[MAX_DSS_MANAGERS];
950
	u32 irq_mask;
951

952
	for (i = 0; i < num_mgrs; i++)
953
		mgr_busy[i] = dispc_mgr_go_busy(i);
954 955 956 957 958 959 960 961 962 963 964 965 966 967 968 969 970 971 972 973

	spin_lock(&dss_cache.lock);

	for (i = 0; i < num_ovls; ++i) {
		oc = &dss_cache.overlay_cache[i];
		if (!mgr_busy[oc->channel])
			oc->shadow_dirty = false;
	}

	for (i = 0; i < num_mgrs; ++i) {
		mc = &dss_cache.manager_cache[i];
		if (!mgr_busy[i])
			mc->shadow_dirty = false;
	}

	r = configure_dispc();
	if (r == 1)
		goto end;

	/* re-read busy flags */
974
	for (i = 0; i < num_mgrs; i++)
975
		mgr_busy[i] = dispc_mgr_go_busy(i);
976 977 978 979 980 981 982 983

	/* keep running as long as there are busy managers, so that
	 * we can collect overlay-applied information */
	for (i = 0; i < num_mgrs; ++i) {
		if (mgr_busy[i])
			goto end;
	}

984 985 986 987 988 989
	irq_mask = DISPC_IRQ_VSYNC | DISPC_IRQ_EVSYNC_ODD |
			DISPC_IRQ_EVSYNC_EVEN;
	if (dss_has_feature(FEAT_MGR_LCD2))
		irq_mask |= DISPC_IRQ_VSYNC2;

	omap_dispc_unregister_isr(dss_apply_irq_handler, NULL, irq_mask);
990 991 992 993 994 995
	dss_cache.irq_enabled = false;

end:
	spin_unlock(&dss_cache.lock);
}

996
static int omap_dss_mgr_apply_ovl(struct omap_overlay *ovl)
997 998
{
	struct overlay_cache_data *oc;
999
	struct omap_dss_device *dssdev;
1000

1001
	oc = &dss_cache.overlay_cache[ovl->id];
1002

1003 1004 1005 1006
	if (ovl->manager_changed) {
		ovl->manager_changed = false;
		ovl->info_dirty  = true;
	}
1007

1008 1009 1010 1011 1012 1013 1014
	if (!overlay_enabled(ovl)) {
		if (oc->enabled) {
			oc->enabled = false;
			oc->dirty = true;
		}
		return 0;
	}
1015

1016 1017
	if (!ovl->info_dirty)
		return 0;
1018

1019
	dssdev = ovl->manager->device;
1020

1021 1022 1023 1024
	if (dss_check_overlay(ovl, dssdev)) {
		if (oc->enabled) {
			oc->enabled = false;
			oc->dirty = true;
1025
		}
1026 1027
		return -EINVAL;
	}
1028

1029 1030 1031
	ovl->info_dirty = false;
	oc->dirty = true;
	oc->info = ovl->info;
1032

1033
	oc->channel = ovl->manager->id;
1034

1035
	oc->enabled = true;
1036

1037 1038
	return 0;
}
1039

1040 1041 1042
static void omap_dss_mgr_apply_mgr(struct omap_overlay_manager *mgr)
{
	struct manager_cache_data *mc;
1043

1044
	mc = &dss_cache.manager_cache[mgr->id];
1045

1046 1047 1048
	if (mgr->device_changed) {
		mgr->device_changed = false;
		mgr->info_dirty  = true;
1049 1050
	}

1051 1052
	if (!mgr->info_dirty)
		return;
1053

1054 1055
	if (!mgr->device)
		return;
1056

1057 1058 1059
	mgr->info_dirty = false;
	mc->dirty = true;
	mc->info = mgr->info;
1060

1061 1062
	mc->manual_update = mgr_manual_update(mgr);
}
1063

1064 1065 1066 1067 1068
static void omap_dss_mgr_apply_ovl_fifos(struct omap_overlay *ovl)
{
	struct overlay_cache_data *oc;
	struct omap_dss_device *dssdev;
	u32 size, burst_size;
1069

1070
	oc = &dss_cache.overlay_cache[ovl->id];
1071

1072 1073
	if (!oc->enabled)
		return;
1074

1075
	dssdev = ovl->manager->device;
1076

1077
	size = dispc_ovl_get_fifo_size(ovl->id);
1078

1079
	burst_size = dispc_ovl_get_burst_size(ovl->id);
1080

1081
	switch (dssdev->type) {
1082 1083 1084 1085
		case OMAP_DISPLAY_TYPE_DPI:
		case OMAP_DISPLAY_TYPE_DBI:
		case OMAP_DISPLAY_TYPE_SDI:
		case OMAP_DISPLAY_TYPE_VENC:
1086
		case OMAP_DISPLAY_TYPE_HDMI:
1087
			default_get_overlay_fifo_thresholds(ovl->id, size,
1088
					burst_size, &oc->fifo_low,
1089 1090 1091 1092 1093
					&oc->fifo_high);
			break;
#ifdef CONFIG_OMAP2_DSS_DSI
		case OMAP_DISPLAY_TYPE_DSI:
			dsi_get_overlay_fifo_thresholds(ovl->id, size,
1094
					burst_size, &oc->fifo_low,
1095 1096 1097 1098 1099
					&oc->fifo_high);
			break;
#endif
		default:
			BUG();
1100 1101 1102 1103 1104 1105 1106 1107 1108 1109 1110 1111 1112 1113 1114 1115 1116
	}
}

static int omap_dss_mgr_apply(struct omap_overlay_manager *mgr)
{
	int i, r;
	unsigned long flags;

	DSSDBG("omap_dss_mgr_apply(%s)\n", mgr->name);

	r = dispc_runtime_get();
	if (r)
		return r;

	spin_lock_irqsave(&dss_cache.lock, flags);

	/* Configure overlays */
1117
	for (i = 0; i < mgr->num_overlays; ++i) {
1118 1119
		struct omap_overlay *ovl;

1120 1121 1122 1123
		ovl = mgr->overlays[i];

		if (ovl->manager != mgr)
			continue;
1124 1125 1126 1127

		omap_dss_mgr_apply_ovl(ovl);
	}

1128 1129
	/* Configure manager */
	omap_dss_mgr_apply_mgr(mgr);
1130 1131

	/* Configure overlay fifos */
1132
	for (i = 0; i < mgr->num_overlays; ++i) {
1133 1134
		struct omap_overlay *ovl;

1135 1136 1137 1138
		ovl = mgr->overlays[i];

		if (ovl->manager != mgr)
			continue;
1139 1140

		omap_dss_mgr_apply_ovl_fifos(ovl);
1141 1142 1143 1144
	}

	r = 0;
	if (!dss_cache.irq_enabled) {
1145 1146 1147 1148 1149 1150 1151 1152
		u32 mask;

		mask = DISPC_IRQ_VSYNC	| DISPC_IRQ_EVSYNC_ODD |
			DISPC_IRQ_EVSYNC_EVEN;
		if (dss_has_feature(FEAT_MGR_LCD2))
			mask |= DISPC_IRQ_VSYNC2;

		r = omap_dispc_register_isr(dss_apply_irq_handler, NULL, mask);
1153 1154 1155 1156 1157 1158
		dss_cache.irq_enabled = true;
	}
	configure_dispc();

	spin_unlock_irqrestore(&dss_cache.lock, flags);

1159 1160
	dispc_runtime_put();

1161 1162 1163 1164 1165
	return r;
}

static int dss_check_manager(struct omap_overlay_manager *mgr)
{
1166 1167 1168 1169 1170 1171 1172 1173 1174 1175 1176
	if (dss_has_feature(FEAT_ALPHA_FIXED_ZORDER)) {
		/*
		 * OMAP3 supports only graphics source transparency color key
		 * and alpha blending simultaneously. See TRM 15.4.2.4.2.2
		 * Alpha Mode
		 */
		if (mgr->info.partial_alpha_enabled && mgr->info.trans_enabled
			&& mgr->info.trans_key_type !=
				OMAP_DSS_COLOR_KEY_GFX_DST)
			return -EINVAL;
	}
1177 1178 1179 1180 1181 1182 1183 1184 1185 1186 1187 1188 1189 1190 1191 1192 1193 1194 1195 1196 1197 1198 1199 1200 1201 1202 1203 1204 1205 1206

	return 0;
}

static int omap_dss_mgr_set_info(struct omap_overlay_manager *mgr,
		struct omap_overlay_manager_info *info)
{
	int r;
	struct omap_overlay_manager_info old_info;

	old_info = mgr->info;
	mgr->info = *info;

	r = dss_check_manager(mgr);
	if (r) {
		mgr->info = old_info;
		return r;
	}

	mgr->info_dirty = true;

	return 0;
}

static void omap_dss_mgr_get_info(struct omap_overlay_manager *mgr,
		struct omap_overlay_manager_info *info)
{
	*info = mgr->info;
}

1207 1208
static int dss_mgr_enable(struct omap_overlay_manager *mgr)
{
1209
	dispc_mgr_enable(mgr->id, 1);
1210 1211 1212 1213 1214
	return 0;
}

static int dss_mgr_disable(struct omap_overlay_manager *mgr)
{
1215
	dispc_mgr_enable(mgr->id, 0);
1216 1217 1218
	return 0;
}

1219 1220 1221 1222 1223 1224 1225 1226 1227 1228 1229 1230 1231 1232 1233 1234
static void omap_dss_add_overlay_manager(struct omap_overlay_manager *manager)
{
	++num_managers;
	list_add_tail(&manager->list, &manager_list);
}

int dss_init_overlay_managers(struct platform_device *pdev)
{
	int i, r;

	spin_lock_init(&dss_cache.lock);

	INIT_LIST_HEAD(&manager_list);

	num_managers = 0;

1235
	for (i = 0; i < dss_feat_get_num_mgrs(); ++i) {
1236 1237 1238 1239 1240 1241 1242 1243 1244 1245 1246 1247 1248 1249
		struct omap_overlay_manager *mgr;
		mgr = kzalloc(sizeof(*mgr), GFP_KERNEL);

		BUG_ON(mgr == NULL);

		switch (i) {
		case 0:
			mgr->name = "lcd";
			mgr->id = OMAP_DSS_CHANNEL_LCD;
			break;
		case 1:
			mgr->name = "tv";
			mgr->id = OMAP_DSS_CHANNEL_DIGIT;
			break;
1250 1251 1252 1253
		case 2:
			mgr->name = "lcd2";
			mgr->id = OMAP_DSS_CHANNEL_LCD2;
			break;
1254 1255 1256 1257 1258 1259 1260 1261
		}

		mgr->set_device = &omap_dss_set_device;
		mgr->unset_device = &omap_dss_unset_device;
		mgr->apply = &omap_dss_mgr_apply;
		mgr->set_manager_info = &omap_dss_mgr_set_info;
		mgr->get_manager_info = &omap_dss_mgr_get_info;
		mgr->wait_for_go = &dss_mgr_wait_for_go;
1262
		mgr->wait_for_vsync = &dss_mgr_wait_for_vsync;
1263

1264 1265 1266
		mgr->enable = &dss_mgr_enable;
		mgr->disable = &dss_mgr_disable;

1267
		mgr->caps = 0;
1268 1269
		mgr->supported_displays =
			dss_feat_get_supported_displays(mgr->id);
1270 1271 1272 1273 1274 1275 1276 1277 1278 1279 1280 1281 1282 1283 1284 1285 1286 1287 1288 1289 1290 1291 1292 1293 1294 1295 1296 1297 1298 1299 1300 1301 1302 1303 1304 1305 1306 1307 1308 1309 1310 1311 1312 1313 1314 1315 1316 1317 1318 1319 1320 1321 1322

		dss_overlay_setup_dispc_manager(mgr);

		omap_dss_add_overlay_manager(mgr);

		r = kobject_init_and_add(&mgr->kobj, &manager_ktype,
				&pdev->dev.kobj, "manager%d", i);

		if (r) {
			DSSERR("failed to create sysfs file\n");
			continue;
		}
	}

	return 0;
}

void dss_uninit_overlay_managers(struct platform_device *pdev)
{
	struct omap_overlay_manager *mgr;

	while (!list_empty(&manager_list)) {
		mgr = list_first_entry(&manager_list,
				struct omap_overlay_manager, list);
		list_del(&mgr->list);
		kobject_del(&mgr->kobj);
		kobject_put(&mgr->kobj);
		kfree(mgr);
	}

	num_managers = 0;
}

int omap_dss_get_num_overlay_managers(void)
{
	return num_managers;
}
EXPORT_SYMBOL(omap_dss_get_num_overlay_managers);

struct omap_overlay_manager *omap_dss_get_overlay_manager(int num)
{
	int i = 0;
	struct omap_overlay_manager *mgr;

	list_for_each_entry(mgr, &manager_list, list) {
		if (i++ == num)
			return mgr;
	}

	return NULL;
}
EXPORT_SYMBOL(omap_dss_get_overlay_manager);