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/* Copyright (c) 2010-2011, Code Aurora Forum. All rights reserved.
 *
 * Redistribution and use in source and binary forms, with or without
 * modification, are permitted provided that the following conditions are
 * met:
 *     * Redistributions of source code must retain the above copyright
 *       notice, this list of conditions and the following disclaimer.
 *     * Redistributions in binary form must reproduce the above
 *       copyright notice, this list of conditions and the following
 *       disclaimer in the documentation and/or other materials provided
 *       with the distribution.
 *     * Neither the name of Code Aurora Forum, Inc. nor the names of its
 *       contributors may be used to endorse or promote products derived
 *       from this software without specific prior written permission.
 *
 * THIS SOFTWARE IS PROVIDED "AS IS" AND ANY EXPRESS OR IMPLIED
 * WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF
 * MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NON-INFRINGEMENT
 * ARE DISCLAIMED.  IN NO EVENT SHALL THE COPYRIGHT OWNER OR CONTRIBUTORS
 * BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
 * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
 * SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR
 * BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY,
 * WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE
 * OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN
 * IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
 *
 */
#ifndef _GSL_PWRCTRL_H
#define _GSL_PWRCTRL_H

#include <linux/types.h>
#include <linux/wait.h>
#include <linux/clk.h>
#include <linux/mutex.h>
#include <mach/clk.h>
#include <mach/internal_power_rail.h>
#include <linux/pm_qos_params.h>

/*****************************************************************************
** power flags
*****************************************************************************/
#define KGSL_PWRFLAGS_POWER_OFF		0x00000001
#define KGSL_PWRFLAGS_POWER_ON		0x00000002
#define KGSL_PWRFLAGS_CLK_ON		0x00000004
#define KGSL_PWRFLAGS_CLK_OFF		0x00000008
#define KGSL_PWRFLAGS_AXI_ON		0x00000010
#define KGSL_PWRFLAGS_AXI_OFF		0x00000020
#define KGSL_PWRFLAGS_IRQ_ON		0x00000040
#define KGSL_PWRFLAGS_IRQ_OFF		0x00000080

#define KGSL_PWRLEVEL_TURBO 0
#define KGSL_PWRLEVEL_NOMINAL 1
#define KGSL_MAX_CLKS 5

struct platform_device;

struct kgsl_pwrctrl {
	int interrupt_num;
	int have_irq;
	unsigned int pwr_rail;
	struct clk *ebi1_clk;
	struct clk *grp_clks[KGSL_MAX_CLKS];
	unsigned int power_flags;
	struct kgsl_pwrlevel pwrlevels[KGSL_MAX_PWRLEVELS];
	unsigned int active_pwrlevel;
	int thermal_pwrlevel;
	unsigned int num_pwrlevels;
	unsigned int interval_timeout;
	struct regulator *gpu_reg;
	uint32_t pcl;
	unsigned int nap_allowed;
	struct kgsl_yamato_context *suspended_ctxt;
	const char *regulator_name;
	const char *irq_name;
	const char *src_clk_name;
	bool pwrrail_first;
	s64 time;
	unsigned int no_switch_cnt;
	unsigned int idle_pass;
};

void kgsl_pwrctrl_clk(struct kgsl_device *device, unsigned int pwrflag);
void kgsl_pwrctrl_axi(struct kgsl_device *device, unsigned int pwrflag);
void kgsl_pwrctrl_pwrrail(struct kgsl_device *device, unsigned int pwrflag);
void kgsl_pwrctrl_irq(struct kgsl_device *device, unsigned int pwrflag);
int kgsl_pwrctrl_init(struct kgsl_device *device);
void kgsl_pwrctrl_close(struct kgsl_device *device);
void kgsl_timer(unsigned long data);
void kgsl_idle_check(struct work_struct *work);
void kgsl_pre_hwaccess(struct kgsl_device *device);
void kgsl_check_suspended(struct kgsl_device *device);
int kgsl_pwrctrl_sleep(struct kgsl_device *device);
void kgsl_pwrctrl_wake(struct kgsl_device *device);
unsigned long  kgsl_get_clkrate(struct clk *clk);
void kgsl_pwrctrl_pwrlevel_change(struct kgsl_device *device, unsigned int new_level);
int kgsl_pwrctrl_init_sysfs(struct kgsl_device *device);
void kgsl_pwrctrl_uninit_sysfs(struct kgsl_device *device);

#endif /* _GSL_PWRCTRL_H */