/*
 * include/mach/isomgr.h
 *
 * Copyright (c) 2012, NVIDIA Corporation.
 *
 * 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, write to the Free Software Foundation, Inc.,
 * 51 Franklin Street, Fifth Floor, Boston, MA  02110-1301, USA.
 */

enum tegra_iso_client {
	TEGRA_ISO_CLIENT_DISP_0,
	TEGRA_ISO_CLIENT_DISP_1,
	TEGRA_ISO_CLIENT_VI_0,
	TEGRA_ISO_CLIENT_COUNT
};

/* handle to identify registered client */
#define tegra_isomgr_handle void *

/* callback to client to renegotiate ISO BW allocation */
typedef void (*tegra_isomgr_renegotiate)(void *priv);

/* register an ISO BW client */
tegra_isomgr_handle tegra_isomgr_register(enum tegra_iso_client client,
					  u32 dedicated_bw,	/* KB/sec */
					  tegra_isomgr_renegotiate renegotiate,
					  void *priv);

/* unregister an ISO BW client */
void tegra_isomgr_unregister(tegra_isomgr_handle handle);

/* reserve ISO BW on behalf of client - don't apply, rval is dvfs thresh usec */
u32 tegra_isomgr_reserve(tegra_isomgr_handle handle,
			 u32 bw,	/* KB/sec */
			 u32 lt);	/* usec */

/* realize client reservation - apply settings, rval is dvfs thresh usec */
u32 tegra_isomgr_realize(tegra_isomgr_handle handle);