diff options
Diffstat (limited to 'arch/arm/mach-davinci/id.c')
| -rw-r--r-- | arch/arm/mach-davinci/id.c | 116 | 
1 files changed, 0 insertions, 116 deletions
diff --git a/arch/arm/mach-davinci/id.c b/arch/arm/mach-davinci/id.c deleted file mode 100644 index 018b994cd794..000000000000 --- a/arch/arm/mach-davinci/id.c +++ /dev/null @@ -1,116 +0,0 @@ -/* - * Davinci CPU identification code - * - * Copyright (C) 2006 Komal Shah <komal_shah802003@yahoo.com> - * - * Derived from OMAP1 CPU identification code. - * - * This program is free software; you can redistribute it and/or modify - * it under the terms of the GNU General Public License version 2 as - * published by the Free Software Foundation. - */ - -#include <linux/module.h> -#include <linux/kernel.h> -#include <linux/init.h> -#include <linux/io.h> - -#define JTAG_ID_BASE		IO_ADDRESS(0x01c40028) - -static unsigned int davinci_revision; - -struct davinci_id { -	u8	variant;	/* JTAG ID bits 31:28 */ -	u16	part_no;	/* JTAG ID bits 27:12 */ -	u32	manufacturer;	/* JTAG ID bits 11:1 */ -	u32	type;		/* Cpu id bits [31:8], cpu class bits [7:0] */ -}; - -/* Register values to detect the DaVinci version */ -static struct davinci_id davinci_ids[] __initdata = { -	{ -		/* DM6446 */ -		.part_no      = 0xb700, -		.variant      = 0x0, -		.manufacturer = 0x017, -		.type	      = 0x64460000, -	}, -	{ -		/* DM646X */ -		.part_no      = 0xb770, -		.variant      = 0x0, -		.manufacturer = 0x017, -		.type         = 0x64670000, -	}, -	{ -		/* DM355 */ -		.part_no	= 0xb73b, -		.variant	= 0x0, -		.manufacturer	= 0x00f, -		.type		= 0x03550000, -	}, -}; - -/* - * Get Device Part No. from JTAG ID register - */ -static u16 __init davinci_get_part_no(void) -{ -	u32 dev_id, part_no; - -	dev_id = __raw_readl(JTAG_ID_BASE); - -	part_no = ((dev_id >> 12) & 0xffff); - -	return part_no; -} - -/* - * Get Device Revision from JTAG ID register - */ -static u8 __init davinci_get_variant(void) -{ -	u32 variant; - -	variant = __raw_readl(JTAG_ID_BASE); - -	variant = (variant >> 28) & 0xf; - -	return variant; -} - -unsigned int davinci_rev(void) -{ -	return davinci_revision >> 16; -} -EXPORT_SYMBOL(davinci_rev); - -void __init davinci_check_revision(void) -{ -	int i; -	u16 part_no; -	u8 variant; - -	part_no = davinci_get_part_no(); -	variant = davinci_get_variant(); - -	/* First check only the major version in a safe way */ -	for (i = 0; i < ARRAY_SIZE(davinci_ids); i++) { -		if (part_no == (davinci_ids[i].part_no)) { -			davinci_revision = davinci_ids[i].type; -			break; -		} -	} - -	/* Check if we can find the dev revision */ -	for (i = 0; i < ARRAY_SIZE(davinci_ids); i++) { -		if (part_no == davinci_ids[i].part_no && -		    variant == davinci_ids[i].variant) { -			davinci_revision = davinci_ids[i].type; -			break; -		} -	} - -	printk(KERN_INFO "DaVinci DM%04x variant 0x%x\n", -	       davinci_rev(), variant); -}  |