41bfb7d7a6
Add code to save/restore registers during R-standby sleep on SH-Mobile processors. Signed-off-by: Magnus Damm <damm@opensource.se> Signed-off-by: Paul Mundt <lethal@linux-sh.org>
98 lines
2.5 KiB
C
98 lines
2.5 KiB
C
#ifndef _ASM_SH_SUSPEND_H
|
|
#define _ASM_SH_SUSPEND_H
|
|
|
|
#ifndef __ASSEMBLY__
|
|
#include <linux/notifier.h>
|
|
static inline int arch_prepare_suspend(void) { return 0; }
|
|
|
|
#include <asm/ptrace.h>
|
|
|
|
struct swsusp_arch_regs {
|
|
struct pt_regs user_regs;
|
|
unsigned long bank1_regs[8];
|
|
};
|
|
|
|
void sh_mobile_call_standby(unsigned long mode);
|
|
|
|
#ifdef CONFIG_CPU_IDLE
|
|
void sh_mobile_setup_cpuidle(void);
|
|
#else
|
|
static inline void sh_mobile_setup_cpuidle(void) {}
|
|
#endif
|
|
|
|
/* notifier chains for pre/post sleep hooks */
|
|
extern struct atomic_notifier_head sh_mobile_pre_sleep_notifier_list;
|
|
extern struct atomic_notifier_head sh_mobile_post_sleep_notifier_list;
|
|
|
|
/* priority levels for notifiers */
|
|
#define SH_MOBILE_SLEEP_BOARD 0
|
|
#define SH_MOBILE_SLEEP_CPU 1
|
|
#define SH_MOBILE_PRE(x) (x)
|
|
#define SH_MOBILE_POST(x) (-(x))
|
|
|
|
/* board code registration function for self-refresh assembly snippets */
|
|
void sh_mobile_register_self_refresh(unsigned long flags,
|
|
void *pre_start, void *pre_end,
|
|
void *post_start, void *post_end);
|
|
|
|
/* register structure for address/data information */
|
|
struct sh_sleep_regs {
|
|
unsigned long stbcr;
|
|
unsigned long bar;
|
|
|
|
/* MMU */
|
|
unsigned long pteh;
|
|
unsigned long ptel;
|
|
unsigned long ttb;
|
|
unsigned long tea;
|
|
unsigned long mmucr;
|
|
unsigned long ptea;
|
|
unsigned long pascr;
|
|
unsigned long irmcr;
|
|
|
|
/* Cache */
|
|
unsigned long ccr;
|
|
unsigned long ramcr;
|
|
};
|
|
|
|
/* data area for low-level sleep code */
|
|
struct sh_sleep_data {
|
|
/* current sleep mode (SUSP_SH_...) */
|
|
unsigned long mode;
|
|
|
|
/* addresses of board specific self-refresh snippets */
|
|
unsigned long sf_pre;
|
|
unsigned long sf_post;
|
|
|
|
/* address of resume code */
|
|
unsigned long resume;
|
|
|
|
/* register state saved and restored by the assembly code */
|
|
unsigned long vbr;
|
|
unsigned long spc;
|
|
unsigned long sr;
|
|
unsigned long sp;
|
|
|
|
/* structure for keeping register addresses */
|
|
struct sh_sleep_regs addr;
|
|
|
|
/* structure for saving/restoring register state */
|
|
struct sh_sleep_regs data;
|
|
};
|
|
|
|
/* a bitmap of supported sleep modes (SUSP_SH..) */
|
|
extern unsigned long sh_mobile_sleep_supported;
|
|
|
|
#endif
|
|
|
|
/* flags passed to assembly suspend code */
|
|
#define SUSP_SH_SLEEP (1 << 0) /* Regular sleep mode */
|
|
#define SUSP_SH_STANDBY (1 << 1) /* SH-Mobile Software standby mode */
|
|
#define SUSP_SH_RSTANDBY (1 << 2) /* SH-Mobile R-standby mode */
|
|
#define SUSP_SH_USTANDBY (1 << 3) /* SH-Mobile U-standby mode */
|
|
#define SUSP_SH_SF (1 << 4) /* Enable self-refresh */
|
|
#define SUSP_SH_MMU (1 << 5) /* Save/restore MMU and cache */
|
|
#define SUSP_SH_REGS (1 << 6) /* Save/restore registers */
|
|
|
|
#endif /* _ASM_SH_SUSPEND_H */
|