f8e5cd2af7
Make sure the irq is off, the idle timer is stopped and the workqueue is flushed before stopping the device for early suspend, suspend, last release or hang recovery. There is one case where the workqueue cannot be flushed, which is from kgsl_pwrctrl_sleep() when going into SLUMBER state. This codepath can be called from the workqueue itself so flushing would deadlock. Change-Id: I19bcd192845401ac0d94aa60a9252970b634c1ea Signed-off-by: Tarun Karra <tkarra@codeaurora.org> Signed-off-by: Jeremy Gebben <jgebben@codeaurora.org>
85 lines
2.7 KiB
C
85 lines
2.7 KiB
C
/* Copyright (c) 2010-2012, Code Aurora Forum. All rights reserved.
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*
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* This program is free software; you can redistribute it and/or modify
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* it under the terms of the GNU General Public License version 2 and
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* only version 2 as published by the Free Software Foundation.
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*
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* This program is distributed in the hope that it will be useful,
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* but WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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* GNU General Public License for more details.
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*
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*/
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#ifndef __KGSL_PWRCTRL_H
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#define __KGSL_PWRCTRL_H
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/*****************************************************************************
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** power flags
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*****************************************************************************/
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#define KGSL_PWRFLAGS_ON 1
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#define KGSL_PWRFLAGS_OFF 0
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#define KGSL_PWRLEVEL_TURBO 0
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#define KGSL_PWRLEVEL_NOMINAL 1
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#define KGSL_MAX_CLKS 5
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struct platform_device;
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struct kgsl_busy {
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struct timeval start;
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struct timeval stop;
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int on_time;
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int time;
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int on_time_old;
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int time_old;
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unsigned int no_nap_cnt;
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};
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struct kgsl_pwrctrl {
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int interrupt_num;
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int have_irq;
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struct clk *ebi1_clk;
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struct clk *grp_clks[KGSL_MAX_CLKS];
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unsigned long power_flags;
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struct kgsl_pwrlevel pwrlevels[KGSL_MAX_PWRLEVELS];
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unsigned int active_pwrlevel;
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int thermal_pwrlevel;
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unsigned int num_pwrlevels;
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unsigned int interval_timeout;
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struct regulator *gpu_reg;
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uint32_t pcl;
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unsigned int nap_allowed;
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const char *regulator_name;
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const char *irq_name;
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s64 time;
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struct kgsl_busy busy;
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unsigned int restore_slumber;
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};
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void kgsl_pwrctrl_irq(struct kgsl_device *device, int state);
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void kgsl_pwrctrl_clk(struct kgsl_device *device, int state);
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int kgsl_pwrctrl_init(struct kgsl_device *device);
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void kgsl_pwrctrl_close(struct kgsl_device *device);
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void kgsl_timer(unsigned long data);
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void kgsl_idle_check(struct work_struct *work);
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void kgsl_pre_hwaccess(struct kgsl_device *device);
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void kgsl_check_suspended(struct kgsl_device *device);
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int kgsl_pwrctrl_sleep(struct kgsl_device *device);
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void kgsl_pwrctrl_wake(struct kgsl_device *device);
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void kgsl_pwrctrl_pwrlevel_change(struct kgsl_device *device,
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unsigned int level);
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int kgsl_pwrctrl_init_sysfs(struct kgsl_device *device);
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void kgsl_pwrctrl_uninit_sysfs(struct kgsl_device *device);
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void kgsl_pwrctrl_enable(struct kgsl_device *device);
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void kgsl_pwrctrl_disable(struct kgsl_device *device);
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void kgsl_pwrctrl_stop_work(struct kgsl_device *device);
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static inline unsigned long kgsl_get_clkrate(struct clk *clk)
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{
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return (clk != NULL) ? clk_get_rate(clk) : 0;
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}
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void kgsl_pwrctrl_set_state(struct kgsl_device *device, unsigned int state);
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void kgsl_pwrctrl_request_state(struct kgsl_device *device, unsigned int state);
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#endif /* __KGSL_PWRCTRL_H */
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