mirror of https://gitee.com/openkylin/linux.git
75 lines
2.0 KiB
C
75 lines
2.0 KiB
C
/*
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* AM33XX clockdomain control
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*
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* Copyright (C) 2011-2012 Texas Instruments Incorporated - http://www.ti.com/
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* Vaibhav Hiremath <hvaibhav@ti.com>
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*
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* Derived from mach-omap2/clockdomain44xx.c written by Rajendra Nayak
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*
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* This program is free software; you can redistribute it and/or
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* modify it under the terms of the GNU General Public License as
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* published by the Free Software Foundation version 2.
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*
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* This program is distributed "as is" WITHOUT ANY WARRANTY of any
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* kind, whether express or implied; without even the implied warranty
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* of 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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#include <linux/kernel.h>
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#include "clockdomain.h"
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#include "cm33xx.h"
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static int am33xx_clkdm_sleep(struct clockdomain *clkdm)
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{
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am33xx_cm_clkdm_force_sleep(clkdm->cm_inst, clkdm->clkdm_offs);
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return 0;
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}
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static int am33xx_clkdm_wakeup(struct clockdomain *clkdm)
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{
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am33xx_cm_clkdm_force_wakeup(clkdm->cm_inst, clkdm->clkdm_offs);
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return 0;
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}
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static void am33xx_clkdm_allow_idle(struct clockdomain *clkdm)
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{
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am33xx_cm_clkdm_enable_hwsup(clkdm->cm_inst, clkdm->clkdm_offs);
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}
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static void am33xx_clkdm_deny_idle(struct clockdomain *clkdm)
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{
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am33xx_cm_clkdm_disable_hwsup(clkdm->cm_inst, clkdm->clkdm_offs);
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}
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static int am33xx_clkdm_clk_enable(struct clockdomain *clkdm)
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{
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if (clkdm->flags & CLKDM_CAN_FORCE_WAKEUP)
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return am33xx_clkdm_wakeup(clkdm);
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return 0;
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}
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static int am33xx_clkdm_clk_disable(struct clockdomain *clkdm)
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{
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bool hwsup = false;
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hwsup = am33xx_cm_is_clkdm_in_hwsup(clkdm->cm_inst, clkdm->clkdm_offs);
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if (!hwsup && (clkdm->flags & CLKDM_CAN_FORCE_SLEEP))
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am33xx_clkdm_sleep(clkdm);
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return 0;
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}
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struct clkdm_ops am33xx_clkdm_operations = {
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.clkdm_sleep = am33xx_clkdm_sleep,
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.clkdm_wakeup = am33xx_clkdm_wakeup,
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.clkdm_allow_idle = am33xx_clkdm_allow_idle,
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.clkdm_deny_idle = am33xx_clkdm_deny_idle,
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.clkdm_clk_enable = am33xx_clkdm_clk_enable,
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.clkdm_clk_disable = am33xx_clkdm_clk_disable,
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};
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