mirror of
https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git
synced 2024-08-23 17:30:02 +00:00
![Tony Lindgren](/assets/img/avatar_default.png)
We must re-enable the RTC module clock enabled in RTC+DDR suspend, and pm33xx has been using platform data callbacks for that. Looks like for retention suspend the RTC module clock must not be re-enabled. To remove the legacy platform data callbacks, and eventually be able to drop the RTC legacy platform data, let's manage the RTC module clock and register range directly in pm33xx. Acked-by: Santosh Shilimkar <ssantosh@kernel.org> Signed-off-by: Tony Lindgren <tony@atomide.com>
75 lines
2.3 KiB
C
75 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)(int (*idle)(u32 wfi_flags));
|
|
int (*deinit)(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 (*save_context)(void);
|
|
void (*restore_context)(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 */
|