mirror of
https://git.kernel.org/pub/scm/linux/kernel/git/herbert/cryptodev-2.6.git
synced 2026-04-27 03:49:57 -04:00
06ee7a950b
am335x and am437x can now make use of the generic cpuidle-arm driver. This requires that we define init and suspend ops to be passed set as the cpuidle ops for the SoC. These ops are invoked directly at the last stage of the cpuidle-arm driver in order to allow low level platform code to run and bring the CPU the rest of the way into it's desired idle state. It is required that the CPUIDLE_METHOD_OF_DECLARE be called from code that is built in so define these ops in pm33xx-core where the always built-in portion of the PM code for these SoCs lives. Additionally, although an soc_suspend function is already exposed by the pm33xx platform code, it contains additional operations needed for full SoC suspend beyond what is needed for a relatively simple CPU suspend needed during cpuidle. To get around this introduce cpu_suspend ops to be used by the am335x and am437x PM driver for the last stage of cpuidle path. Acked-by: Santosh Shilimkar <ssantosh@kernel.org> Signed-off-by: Dave Gerlach <d-gerlach@ti.com> Acked-by: Santosh Shilimkar <ssantosh@kernel.org> Signed-off-by: Tony Lindgren <tony@atomide.com>
78 lines
2.3 KiB
C
78 lines
2.3 KiB
C
/* SPDX-License-Identifier: GPL-2.0 */
|
|
/*
|
|
* TI pm33xx platform data
|
|
*
|
|
* Copyright (C) 2016-2018 Texas Instruments, Inc.
|
|
* Dave Gerlach <d-gerlach@ti.com>
|
|
*/
|
|
|
|
#ifndef _LINUX_PLATFORM_DATA_PM33XX_H
|
|
#define _LINUX_PLATFORM_DATA_PM33XX_H
|
|
|
|
#include <linux/kbuild.h>
|
|
#include <linux/types.h>
|
|
|
|
/*
|
|
* WFI Flags for sleep code control
|
|
*
|
|
* These flags allow PM code to exclude certain operations from happening
|
|
* in the low level ASM code found in sleep33xx.S and sleep43xx.S
|
|
*
|
|
* WFI_FLAG_FLUSH_CACHE: Flush the ARM caches and disable caching. Only
|
|
* needed when MPU will lose context.
|
|
* WFI_FLAG_SELF_REFRESH: Let EMIF place DDR memory into self-refresh and
|
|
* disable EMIF.
|
|
* WFI_FLAG_SAVE_EMIF: Save context of all EMIF registers and restore in
|
|
* resume path. Only needed if PER domain loses context
|
|
* and must also have WFI_FLAG_SELF_REFRESH set.
|
|
* WFI_FLAG_WAKE_M3: Disable MPU clock or clockdomain to cause wkup_m3 to
|
|
* execute when WFI instruction executes.
|
|
* WFI_FLAG_RTC_ONLY: Configure the RTC to enter RTC+DDR mode.
|
|
*/
|
|
#define WFI_FLAG_FLUSH_CACHE BIT(0)
|
|
#define WFI_FLAG_SELF_REFRESH BIT(1)
|
|
#define WFI_FLAG_SAVE_EMIF BIT(2)
|
|
#define WFI_FLAG_WAKE_M3 BIT(3)
|
|
#define WFI_FLAG_RTC_ONLY BIT(4)
|
|
|
|
#ifndef __ASSEMBLER__
|
|
struct am33xx_pm_sram_addr {
|
|
void (*do_wfi)(void);
|
|
unsigned long *do_wfi_sz;
|
|
unsigned long *resume_offset;
|
|
unsigned long *emif_sram_table;
|
|
unsigned long *ro_sram_data;
|
|
unsigned long resume_address;
|
|
};
|
|
|
|
struct am33xx_pm_platform_data {
|
|
int (*init)(void);
|
|
int (*soc_suspend)(unsigned int state, int (*fn)(unsigned long),
|
|
unsigned long args);
|
|
int (*cpu_suspend)(int (*fn)(unsigned long), unsigned long args);
|
|
void (*begin_suspend)(void);
|
|
void (*finish_suspend)(void);
|
|
struct am33xx_pm_sram_addr *(*get_sram_addrs)(void);
|
|
void __iomem *(*get_rtc_base_addr)(void);
|
|
void (*save_context)(void);
|
|
void (*restore_context)(void);
|
|
void (*prepare_rtc_suspend)(void);
|
|
void (*prepare_rtc_resume)(void);
|
|
int (*check_off_mode_enable)(void);
|
|
};
|
|
|
|
struct am33xx_pm_sram_data {
|
|
u32 wfi_flags;
|
|
u32 l2_aux_ctrl_val;
|
|
u32 l2_prefetch_ctrl_val;
|
|
} __packed __aligned(8);
|
|
|
|
struct am33xx_pm_ro_sram_data {
|
|
u32 amx3_pm_sram_data_virt;
|
|
u32 amx3_pm_sram_data_phys;
|
|
void __iomem *rtc_base_virt;
|
|
} __packed __aligned(8);
|
|
|
|
#endif /* __ASSEMBLER__ */
|
|
#endif /* _LINUX_PLATFORM_DATA_PM33XX_H */
|