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authorPaul Walmsley <paul@pwsan.com>2008-07-03 11:24:45 +0200
committerTony Lindgren <tony@atomide.com>2008-07-03 11:24:45 +0200
commit097c584cd48844d9ef8402bdc6ab49e7e2135f31 (patch)
tree119c301a4c811231e98918e6cb8e0c74cba68edd /include/asm-arm/arch-omap
parentARM: OMAP: Turn CM and PRM access into functions (diff)
downloadlinux-097c584cd48844d9ef8402bdc6ab49e7e2135f31.tar.xz
linux-097c584cd48844d9ef8402bdc6ab49e7e2135f31.zip
ARM: OMAP: Add OMAP chip type structure; clean up mach-omap2/id.c
Add a new OMAP chip identification interface, omap_chip_id. omap_chip_id is a structure which contains one bit for each OMAP2/3 CPU type, and on 3430, ES level. For example, the CHIP_IS_OMAP2420 bit is set in omap_chip at boot on an OMAP2420. On OMAP3430ES2, both CHIP_IS_OMAP3430 and CHIP_IS_OMAP3430ES2 bits are set. omap_chip is set in mach-omap2/id.c by _set_omap_chip(). Other code should use the omap_chip_is() function to test against omap_chip. Also, clean up id.c by splitting some code out of omap_check_revision() into its own function, _set_system_rev(); and converting some debug printk()s into pr_debug(). Second revision. Signed-off-by: Paul Walmsley <paul@pwsan.com> Signed-off-by: Tony Lindgren <tony@atomide.com>
Diffstat (limited to 'include/asm-arm/arch-omap')
-rw-r--r--include/asm-arm/arch-omap/cpu.h39
1 files changed, 37 insertions, 2 deletions
diff --git a/include/asm-arm/arch-omap/cpu.h b/include/asm-arm/arch-omap/cpu.h
index e8a4cf52778b..52db09f83281 100644
--- a/include/asm-arm/arch-omap/cpu.h
+++ b/include/asm-arm/arch-omap/cpu.h
@@ -3,7 +3,7 @@
*
* OMAP cpu type detection
*
- * Copyright (C) 2004 Nokia Corporation
+ * Copyright (C) 2004, 2008 Nokia Corporation
*
* Written by Tony Lindgren <tony.lindgren@nokia.com>
*
@@ -26,6 +26,12 @@
#ifndef __ASM_ARCH_OMAP_CPU_H
#define __ASM_ARCH_OMAP_CPU_H
+struct omap_chip_id {
+ u8 oc;
+};
+
+#define OMAP_CHIP_INIT(x) { .oc = x }
+
extern unsigned int system_rev;
#define omap2_cpu_rev() ((system_rev >> 12) & 0x0f)
@@ -345,6 +351,33 @@ IS_OMAP_TYPE(3430, 0x3430)
#define OMAP2430_REV_ES1_0 0x24300000
#define OMAP3430_REV_ES1_0 0x34300000
#define OMAP3430_REV_ES2_0 0x34301000
+#define OMAP3430_REV_ES2_1 0x34302000
+#define OMAP3430_REV_ES2_2 0x34303000
+
+/*
+ * omap_chip bits
+ *
+ * CHIP_IS_OMAP{2420,2430,3430} indicate that a particular structure is
+ * valid on all chips of that type. CHIP_IS_OMAP3430ES{1,2} indicates
+ * something that is only valid on that particular ES revision.
+ *
+ * These bits may be ORed together to indicate structures that are
+ * available on multiple chip types.
+ *
+ * To test whether a particular structure matches the current OMAP chip type,
+ * use omap_chip_is().
+ *
+ */
+#define CHIP_IS_OMAP2420 (1 << 0)
+#define CHIP_IS_OMAP2430 (1 << 1)
+#define CHIP_IS_OMAP3430 (1 << 2)
+#define CHIP_IS_OMAP3430ES1 (1 << 3)
+#define CHIP_IS_OMAP3430ES2 (1 << 4)
+
+#define CHIP_IS_OMAP24XX (CHIP_IS_OMAP2420 | CHIP_IS_OMAP2430)
+
+int omap_chip_is(struct omap_chip_id oci);
+
/*
* Macro to detect device type i.e. EMU/HS/TST/GP/BAD
@@ -362,6 +395,8 @@ IS_OMAP_TYPE(3430, 0x3430)
#define is_device_type_gp() (get_device_type() == DEVICE_TYPE_GP)
#define is_device_type_bad() (get_device_type() == DEVICE_TYPE_BAD)
-#endif
+void omap2_check_revision(void);
+
+#endif /* defined(CONFIG_ARCH_OMAP2) || defined(CONFIG_ARCH_OMAP3) */
#endif