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ARM: trusted_foundations: Make prepare_idle call to take mode argument 

The Trusted Foundations firmware call varies depending on the required
suspend-mode. Make the firmware API to take the mode argument in order
to expose all of the modes to firmware user.

Tested-by: Robert Yang <decatf@gmail.com>
Tested-by: Michał Mirosław <mirq-linux@rere.qmqm.pl>
Signed-off-by: Dmitry Osipenko <digetx@gmail.com>
Signed-off-by: Thierry Reding <treding@nvidia.com>
This commit is contained in:
Dmitry Osipenko 2019-03-18 01:52:05 +03:00 committed by Thierry Reding
parent ebca2a6ee1
commit 96446e21d6
4 changed files with 36 additions and 4 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

29
arch/arm/firmware/trusted_foundations.c
View File

@ -67,9 +67,34 @@ static int tf_set_cpu_boot_addr(int cpu, unsigned long boot_addr)
return 0;
}
static int tf_prepare_idle(void)
static int tf_prepare_idle(unsigned long mode)
{
tf_generic_smc(TF_CPU_PM, TF_CPU_PM_S1_NOFLUSH_L2, cpu_boot_addr);
switch (mode) {
case TF_PM_MODE_LP0:
tf_generic_smc(TF_CPU_PM, TF_CPU_PM_S3, cpu_boot_addr);
break;
case TF_PM_MODE_LP1:
tf_generic_smc(TF_CPU_PM, TF_CPU_PM_S2, cpu_boot_addr);
break;
case TF_PM_MODE_LP1_NO_MC_CLK:
tf_generic_smc(TF_CPU_PM, TF_CPU_PM_S2_NO_MC_CLK,
cpu_boot_addr);
break;
case TF_PM_MODE_LP2:
tf_generic_smc(TF_CPU_PM, TF_CPU_PM_S1, cpu_boot_addr);
break;
case TF_PM_MODE_LP2_NOFLUSH_L2:
tf_generic_smc(TF_CPU_PM, TF_CPU_PM_S1_NOFLUSH_L2,
cpu_boot_addr);
break;
default:
return -EINVAL;
}
return 0;
}

2
arch/arm/include/asm/firmware.h
View File

@ -24,7 +24,7 @@ struct firmware_ops {
/*
* Inform the firmware we intend to enter CPU idle mode
*/
int (*prepare_idle)(void);
int (*prepare_idle)(unsigned long mode);
/*
* Enters CPU idle mode
*/

6
arch/arm/include/asm/trusted_foundations.h
View File

@ -35,6 +35,12 @@
#include <asm/hardware/cache-l2x0.h>
#include <asm/outercache.h>
#define TF_PM_MODE_LP0 0
#define TF_PM_MODE_LP1 1
#define TF_PM_MODE_LP1_NO_MC_CLK 2
#define TF_PM_MODE_LP2 3
#define TF_PM_MODE_LP2_NOFLUSH_L2 4
struct trusted_foundations_platform_data {
unsigned int version_major;
unsigned int version_minor;

3
arch/arm/mach-tegra/cpuidle-tegra114.c
View File

@ -24,6 +24,7 @@
#include <asm/cpuidle.h>
#include <asm/smp_plat.h>
#include <asm/suspend.h>
#include <asm/trusted_foundations.h>
#include <asm/psci.h>
#include "cpuidle.h"
@ -46,7 +47,7 @@ static int tegra114_idle_power_down(struct cpuidle_device *dev,
tegra_set_cpu_in_lp2();
cpu_pm_enter();
call_firmware_op(prepare_idle);
call_firmware_op(prepare_idle, TF_PM_MODE_LP2_NOFLUSH_L2);
/* Do suspend by ourselves if the firmware does not implement it */
if (call_firmware_op(do_idle, 0) == -ENOSYS)