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