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/*
* Copyright (c) 2012-2014, The Linux Foundation. All rights reserved.
*
* This program is free software; you can redistribute it and/or modify
* it under the terms of the GNU General Public License version 2 and
* only 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.
*/
#include <linux/module.h>
#include <linux/kernel.h>
#include <asm/cputype.h>
#include <soc/qcom/avs.h>
#include <soc/qcom/spm.h>
u32 avs_get_avscsr(void)
{
u32 val = 0;
asm volatile ("mrc p15, 7, %[avscsr], c15, c1, 7\n\t"
: [avscsr]"=r" (val)
);
return val;
}
EXPORT_SYMBOL(avs_get_avscsr);
void avs_set_avscsr(u32 avscsr)
{
asm volatile ("mcr p15, 7, %[avscsr], c15, c1, 7\n\t"
"isb\n\t"
:
: [avscsr]"r" (avscsr)
);
}
EXPORT_SYMBOL(avs_set_avscsr);
u32 avs_get_avsdscr(void)
{
u32 val = 0;
asm volatile ("mrc p15, 7, %[avsdscr], c15, c0, 6\n\t"
: [avsdscr]"=r" (val)
);
return val;
}
EXPORT_SYMBOL(avs_get_avsdscr);
void avs_set_avsdscr(u32 avsdscr)
{
asm volatile("mcr p15, 7, %[avsdscr], c15, c0, 6\n\t"
"isb\n\t"
:
: [avsdscr]"r" (avsdscr)
);
}
EXPORT_SYMBOL(avs_set_avsdscr);
static void avs_enable_local(void *data)
{
u32 avsdscr = (u32) data;
u32 avscsr_enable = 0x61;
avs_set_avsdscr(avsdscr);
avs_set_avscsr(avscsr_enable);
}
static void avs_disable_local(void *data)
{
int cpu = smp_processor_id();
avs_set_avscsr(0);
msm_spm_set_vdd(cpu, msm_spm_get_vdd(cpu));
}
void avs_enable(int cpu, u32 avsdscr)
{
int ret;
ret = smp_call_function_single(cpu, avs_enable_local,
(void *)avsdscr, true);
WARN_ON(ret);
}
EXPORT_SYMBOL(avs_enable);
void avs_disable(int cpu)
{
int ret;
ret = smp_call_function_single(cpu, avs_disable_local,
(void *) 0, true);
WARN_ON(ret);
}
EXPORT_SYMBOL(avs_disable);
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