include/linux/soc/ti/omap1-soc.h

Source file repositories/reference/linux-study-clean/include/linux/soc/ti/omap1-soc.h

File Facts

System
Linux kernel
Corpus path
include/linux/soc/ti/omap1-soc.h
Extension
.h
Size
3900 bytes
Lines
164
Domain
Core OS
Bucket
Core Kernel Interface
Inferred role
Core OS: implementation source
Status
source implementation candidate

Why This File Exists

Core operating-system implementation surface: boot, tasks, memory, VFS, syscall-facing interfaces, synchronization, credentials, and isolation.

Dependency Surface

Detected Declarations

Annotated Snippet

#ifndef __ASM_ARCH_OMAP_CPU_H
#define __ASM_ARCH_OMAP_CPU_H

/*
 * Test if multicore OMAP support is needed
 */
#undef MULTI_OMAP1
#undef OMAP_NAME

#ifdef CONFIG_ARCH_OMAP15XX
# ifdef OMAP_NAME
#  undef  MULTI_OMAP1
#  define MULTI_OMAP1
# else
#  define OMAP_NAME omap1510
# endif
#endif
#ifdef CONFIG_ARCH_OMAP16XX
# ifdef OMAP_NAME
#  undef  MULTI_OMAP1
#  define MULTI_OMAP1
# else
#  define OMAP_NAME omap16xx
# endif
#endif

/*
 * omap_rev bits:
 * CPU id bits	(0730, 1510, 1710, 2422...)	[31:16]
 * CPU revision	(See _REV_ defined in cpu.h)	[15:08]
 * CPU class bits (15xx, 16xx, 24xx, 34xx...)	[07:00]
 */
unsigned int omap_rev(void);

/*
 * Get the CPU revision for OMAP devices
 */
#define GET_OMAP_REVISION()	((omap_rev() >> 8) & 0xff)

/*
 * Macros to group OMAP into cpu classes.
 * These can be used in most places.
 * cpu_is_omap15xx():	True for OMAP1510, OMAP5910 and OMAP310
 * cpu_is_omap16xx():	True for OMAP1610, OMAP5912 and OMAP1710
 */
#define GET_OMAP_CLASS	(omap_rev() & 0xff)

#define IS_OMAP_CLASS(class, id)			\
static inline int is_omap ##class (void)		\
{							\
	return (GET_OMAP_CLASS == (id)) ? 1 : 0;	\
}

#define GET_OMAP_SUBCLASS	((omap_rev() >> 20) & 0x0fff)

#define IS_OMAP_SUBCLASS(subclass, id)			\
static inline int is_omap ##subclass (void)		\
{							\
	return (GET_OMAP_SUBCLASS == (id)) ? 1 : 0;	\
}

IS_OMAP_CLASS(15xx, 0x15)
IS_OMAP_CLASS(16xx, 0x16)

#define cpu_is_omap15xx()		0
#define cpu_is_omap16xx()		0

#if defined(MULTI_OMAP1)
# if defined(CONFIG_ARCH_OMAP15XX)
#  undef  cpu_is_omap15xx
#  define cpu_is_omap15xx()		is_omap15xx()
# endif
# if defined(CONFIG_ARCH_OMAP16XX)
#  undef  cpu_is_omap16xx
#  define cpu_is_omap16xx()		is_omap16xx()
# endif
#else
# if defined(CONFIG_ARCH_OMAP15XX)
#  undef  cpu_is_omap15xx
#  define cpu_is_omap15xx()		1
# endif
# if defined(CONFIG_ARCH_OMAP16XX)
#  undef  cpu_is_omap16xx
#  define cpu_is_omap16xx()		1
# endif
#endif

/*
 * Macros to detect individual cpu types.
 * These are only rarely needed.

Annotation

Implementation Notes