Commit | Line | Data |
---|---|---|
b2441318 | 1 | /* SPDX-License-Identifier: GPL-2.0 */ |
4b17244c CM |
2 | #ifndef __ASMARM_ARCH_SCU_H |
3 | #define __ASMARM_ARCH_SCU_H | |
4 | ||
292ec42a RK |
5 | #define SCU_PM_NORMAL 0 |
6 | #define SCU_PM_DORMANT 2 | |
7 | #define SCU_PM_POWEROFF 3 | |
8 | ||
9 | #ifndef __ASSEMBLER__ | |
e9d6b335 | 10 | |
fed3c155 | 11 | #include <linux/errno.h> |
e9d6b335 HD |
12 | #include <asm/cputype.h> |
13 | ||
14 | static inline bool scu_a9_has_base(void) | |
15 | { | |
af040ffc | 16 | return read_cpuid_part() == ARM_CPU_PART_CORTEX_A9; |
e9d6b335 HD |
17 | } |
18 | ||
19 | static inline unsigned long scu_a9_get_base(void) | |
20 | { | |
21 | unsigned long pa; | |
22 | ||
23 | asm("mrc p15, 4, %0, c15, c0, 0" : "=r" (pa)); | |
24 | ||
25 | return pa; | |
26 | } | |
27 | ||
2abc75a8 | 28 | #ifdef CONFIG_HAVE_ARM_SCU |
a8cbcd92 | 29 | unsigned int scu_get_core_count(void __iomem *); |
292ec42a | 30 | int scu_power_mode(void __iomem *, unsigned int); |
2abc75a8 NM |
31 | #else |
32 | static inline unsigned int scu_get_core_count(void __iomem *scu_base) | |
33 | { | |
34 | return 0; | |
35 | } | |
36 | static inline int scu_power_mode(void __iomem *scu_base, unsigned int mode) | |
37 | { | |
38 | return -EINVAL; | |
39 | } | |
40 | #endif | |
eed88123 | 41 | |
2abc75a8 | 42 | #if defined(CONFIG_SMP) && defined(CONFIG_HAVE_ARM_SCU) |
eed88123 RH |
43 | void scu_enable(void __iomem *scu_base); |
44 | #else | |
45 | static inline void scu_enable(void __iomem *scu_base) {} | |
46 | #endif | |
47 | ||
292ec42a | 48 | #endif |
4b17244c CM |
49 | |
50 | #endif |