/*
 * OMAP cpu type detection
 *
 * Copyright (C) 2004, 2008 Nokia Corporation
 *
 * Copyright (C) 2009-11 Texas Instruments.
 *
 * Written by Tony Lindgren <tony.lindgren@nokia.com>
 *
 * Added OMAP4/5 specific defines - Santosh Shilimkar<santosh.shilimkar@ti.com>
 * Added DRA7xxx specific defines - Sricharan R<r.sricharan@ti.com>
 *
 * This program is free software; you can redistribute it and/or modify
 * it under the terms of the GNU General Public License as published by
 * the Free Software Foundation; either version 2 of the License, or
 * (at your option) any later version.
 *
 * This program is distributed in the hope that it will be useful,
 * but WITHOUT ANY WARRANTY; without even the implied warranty of
 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
 * GNU General Public License for more details.
 *
 * You should have received a copy of the GNU General Public License
 * along with this program; if not, write to the Free Software
 * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
 *
 */

#include "omap24xx.h"
#include "omap34xx.h"
#include "omap44xx.h"
#include "ti81xx.h"
#include "am33xx.h"
#include "omap54xx.h"

#ifndef __ASSEMBLY__

#include <linux/bitops.h>
#include <linux/of.h>

/*
 * Test if multicore OMAP support is needed
 */
#undef MULTI_OMAP2
#undef OMAP_NAME

#ifdef CONFIG_ARCH_MULTIPLATFORM
#define MULTI_OMAP2
#endif
#ifdef CONFIG_SOC_OMAP2420
# ifdef OMAP_NAME
#  undef  MULTI_OMAP2
#  define MULTI_OMAP2
# else
#  define OMAP_NAME omap2420
# endif
#endif
#ifdef CONFIG_SOC_OMAP2430
# ifdef OMAP_NAME
#  undef  MULTI_OMAP2
#  define MULTI_OMAP2
# else
#  define OMAP_NAME omap2430
# endif
#endif
#ifdef CONFIG_ARCH_OMAP3
# ifdef OMAP_NAME
#  undef  MULTI_OMAP2
#  define MULTI_OMAP2
# else
#  define OMAP_NAME omap3
# endif
#endif
#ifdef CONFIG_ARCH_OMAP4
# ifdef OMAP_NAME
#  undef  MULTI_OMAP2
#  define MULTI_OMAP2
# else
#  define OMAP_NAME omap4
# endif
#endif

#ifdef CONFIG_SOC_OMAP5
# ifdef OMAP_NAME
#  undef  MULTI_OMAP2
#  define MULTI_OMAP2
# else
#  define OMAP_NAME omap5
# endif
#endif

#ifdef CONFIG_SOC_AM33XX
# ifdef OMAP_NAME
#  undef  MULTI_OMAP2
#  define MULTI_OMAP2
# else
#  define OMAP_NAME am33xx
# endif
#endif

#ifdef CONFIG_SOC_AM43XX
# ifdef OMAP_NAME
#  undef  MULTI_OMAP2
#  define MULTI_OMAP2
# else
#  define OMAP_NAME am43xx
# endif
#endif

#ifdef CONFIG_SOC_DRA7XX
# ifdef OMAP_NAME
#  undef MULTI_OMAP2
#  define MULTI_OMAP2
# else
#  define OMAP_NAME DRA7XX
# endif
#endif

/*
 * Omap device type i.e. EMU/HS/TST/GP/BAD
 */
#define OMAP2_DEVICE_TYPE_TEST		0
#define OMAP2_DEVICE_TYPE_EMU		1
#define OMAP2_DEVICE_TYPE_SEC		2
#define OMAP2_DEVICE_TYPE_GP		3
#define OMAP2_DEVICE_TYPE_BAD		4

int omap_type(void);

/*
 * 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);

static inline int soc_is_omap(void)
{
	return omap_rev() != 0;
}

/*
 * 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_omap24xx():	True for OMAP2420, OMAP2422, OMAP2423, OMAP2430
 * cpu_is_omap242x():	True for OMAP2420, OMAP2422, OMAP2423
 * cpu_is_omap243x():	True for OMAP2430
 * cpu_is_omap343x():	True for OMAP3430
 * cpu_is_omap443x():	True for OMAP4430
 * cpu_is_omap446x():	True for OMAP4460
 * cpu_is_omap447x():	True for OMAP4470
 * soc_is_omap543x():	True for OMAP5430, OMAP5432
 */
#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_AM_CLASS	((omap_rev() >> 24) & 0xff)

#define IS_AM_CLASS(class, id)				\
static inline int is_am ##class (void)			\
{							\
	return (GET_AM_CLASS == (id)) ? 1 : 0;		\
}

#define GET_TI_CLASS	((omap_rev() >> 24) & 0xff)

#define IS_TI_CLASS(class, id)			\
static inline int is_ti ##class (void)		\
{							\
	return (GET_TI_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;	\
}

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

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

IS_OMAP_CLASS(24xx, 0x24)
IS_OMAP_CLASS(34xx, 0x34)
IS_OMAP_CLASS(44xx, 0x44)
IS_AM_CLASS(35xx, 0x35)
IS_OMAP_CLASS(54xx, 0x54)
IS_AM_CLASS(33xx, 0x33)
IS_AM_CLASS(43xx, 0x43)

IS_TI_CLASS(81xx, 0x81)

IS_OMAP_SUBCLASS(242x, 0x242)
IS_OMAP_SUBCLASS(243x, 0x243)
IS_OMAP_SUBCLASS(343x, 0x343)
IS_OMAP_SUBCLASS(363x, 0x363)
IS_OMAP_SUBCLASS(443x, 0x443)
IS_OMAP_SUBCLASS(446x, 0x446)
IS_OMAP_SUBCLASS(447x, 0x447)
IS_OMAP_SUBCLASS(543x, 0x543)

IS_TI_SUBCLASS(816x, 0x816)
IS_TI_SUBCLASS(814x, 0x814)
IS_AM_SUBCLASS(335x, 0x335)
IS_AM_SUBCLASS(437x, 0x437)

#define cpu_is_omap24xx()		0
#define cpu_is_omap242x()		0
#define cpu_is_omap243x()		0
#define cpu_is_omap34xx()		0
#define cpu_is_omap343x()		0
#define cpu_is_ti81xx()			0
#define cpu_is_ti816x()			0
#define cpu_is_ti814x()			0
#define soc_is_am35xx()			0
#define soc_is_am33xx()			0
#define soc_is_am335x()			0
#define soc_is_am43xx()			0
#define soc_is_am437x()			0
#define cpu_is_omap44xx()		0
#define cpu_is_omap443x()		0
#define cpu_is_omap446x()		0
#define cpu_is_omap447x()		0
#define soc_is_omap54xx()		0
#define soc_is_omap543x()		0
#define soc_is_dra7xx()			0
#define soc_is_dra74x()			0
#define soc_is_dra72x()			0

#if defined(MULTI_OMAP2)
# if defined(CONFIG_ARCH_OMAP2)
#  undef  cpu_is_omap24xx
#  define cpu_is_omap24xx()		is_omap24xx()
# endif
# if defined (CONFIG_SOC_OMAP2420)
#  undef  cpu_is_omap242x
#  define cpu_is_omap242x()		is_omap242x()
# endif
# if defined (CONFIG_SOC_OMAP2430)
#  undef  cpu_is_omap243x
#  define cpu_is_omap243x()		is_omap243x()
# endif
# if defined(CONFIG_ARCH_OMAP3)
#  undef  cpu_is_omap34xx
#  undef  cpu_is_omap343x
#  define cpu_is_omap34xx()		is_omap34xx()
#  define cpu_is_omap343x()		is_omap343x()
# endif
#else
# if defined(CONFIG_ARCH_OMAP2)
#  undef  cpu_is_omap24xx
#  define cpu_is_omap24xx()		1
# endif
# if defined(CONFIG_SOC_OMAP2420)
#  undef  cpu_is_omap242x
#  define cpu_is_omap242x()		1
# endif
# if defined(CONFIG_SOC_OMAP2430)
#  undef  cpu_is_omap243x
#  define cpu_is_omap243x()		1
# endif
# if defined(CONFIG_ARCH_OMAP3)
#  undef  cpu_is_omap34xx
#  define cpu_is_omap34xx()		1
# endif
# if defined(CONFIG_SOC_OMAP3430)
#  undef  cpu_is_omap343x
#  define cpu_is_omap343x()		1
# endif
#endif

/*
 * Macros to detect individual cpu types.
 * These are only rarely needed.
 * cpu_is_omap2420():	True for OMAP2420
 * cpu_is_omap2422():	True for OMAP2422
 * cpu_is_omap2423():	True for OMAP2423
 * cpu_is_omap2430():	True for OMAP2430
 * cpu_is_omap3430():	True for OMAP3430
 */
#define GET_OMAP_TYPE	((omap_rev() >> 16) & 0xffff)

#define IS_OMAP_TYPE(type, id)				\
static inline int is_omap ##type (void)			\
{							\
	return (GET_OMAP_TYPE == (id)) ? 1 : 0;		\
}

IS_OMAP_TYPE(2420, 0x2420)
IS_OMAP_TYPE(2422, 0x2422)
IS_OMAP_TYPE(2423, 0x2423)
IS_OMAP_TYPE(2430, 0x2430)
IS_OMAP_TYPE(3430, 0x3430)

#define cpu_is_omap2420()		0
#define cpu_is_omap2422()		0
#define cpu_is_omap2423()		0
#define cpu_is_omap2430()		0
#define cpu_is_omap3430()		0
#define cpu_is_omap3630()		0
#define soc_is_omap5430()		0

/* These are needed for the common code */
#ifdef CONFIG_ARCH_OMAP2PLUS
#define cpu_is_omap7xx()		0
#define cpu_is_omap15xx()		0
#define cpu_is_omap16xx()		0
#define cpu_is_omap1510()		0
#define cpu_is_omap1610()		0
#define cpu_is_omap1611()		0
#define cpu_is_omap1621()		0
#define cpu_is_omap1710()		0
#define cpu_class_is_omap1()		0
#define cpu_class_is_omap2()		1
#endif

#if defined(CONFIG_ARCH_OMAP2)
# undef  cpu_is_omap2420
# undef  cpu_is_omap2422
# undef  cpu_is_omap2423
# undef  cpu_is_omap2430
# define cpu_is_omap2420()		is_omap2420()
# define cpu_is_omap2422()		is_omap2422()
# define cpu_is_omap2423()		is_omap2423()
# define cpu_is_omap2430()		is_omap2430()
#endif

#if defined(CONFIG_ARCH_OMAP3)
# undef cpu_is_omap3430
# undef cpu_is_ti81xx
# undef cpu_is_ti816x
# undef cpu_is_ti814x
# undef soc_is_am35xx
# define cpu_is_omap3430()		is_omap3430()
# undef cpu_is_omap3630
# define cpu_is_omap3630()		is_omap363x()
# define cpu_is_ti81xx()		is_ti81xx()
# define cpu_is_ti816x()		is_ti816x()
# define cpu_is_ti814x()		is_ti814x()
# define soc_is_am35xx()		is_am35xx()
#endif

# if defined(CONFIG_SOC_AM33XX)
# undef soc_is_am33xx
# undef soc_is_am335x
# define soc_is_am33xx()		is_am33xx()
# define soc_is_am335x()		is_am335x()
#endif

#ifdef	CONFIG_SOC_AM43XX
# undef soc_is_am43xx
# undef soc_is_am437x
# define soc_is_am43xx()		is_am43xx()
# define soc_is_am437x()		is_am437x()
#endif

# if defined(CONFIG_ARCH_OMAP4)
# undef cpu_is_omap44xx
# undef cpu_is_omap443x
# undef cpu_is_omap446x
# undef cpu_is_omap447x
# define cpu_is_omap44xx()		is_omap44xx()
# define cpu_is_omap443x()		is_omap443x()
# define cpu_is_omap446x()		is_omap446x()
# define cpu_is_omap447x()		is_omap447x()
# endif

# if defined(CONFIG_SOC_OMAP5)
# undef soc_is_omap54xx
# undef soc_is_omap543x
# define soc_is_omap54xx()		is_omap54xx()
# define soc_is_omap543x()		is_omap543x()
#endif

#if defined(CONFIG_SOC_DRA7XX)
#undef soc_is_dra7xx
#undef soc_is_dra74x
#undef soc_is_dra72x
#define soc_is_dra7xx()	(of_machine_is_compatible("ti,dra7"))
#define soc_is_dra74x()	(of_machine_is_compatible("ti,dra74"))
#define soc_is_dra72x()	(of_machine_is_compatible("ti,dra72"))
#endif

/* Various silicon revisions for omap2 */
#define OMAP242X_CLASS		0x24200024
#define OMAP2420_REV_ES1_0	OMAP242X_CLASS
#define OMAP2420_REV_ES2_0	(OMAP242X_CLASS | (0x1 << 8))

#define OMAP243X_CLASS		0x24300024
#define OMAP2430_REV_ES1_0	OMAP243X_CLASS

#define OMAP343X_CLASS		0x34300034
#define OMAP3430_REV_ES1_0	OMAP343X_CLASS
#define OMAP3430_REV_ES2_0	(OMAP343X_CLASS | (0x1 << 8))
#define OMAP3430_REV_ES2_1	(OMAP343X_CLASS | (0x2 << 8))
#define OMAP3430_REV_ES3_0	(OMAP343X_CLASS | (0x3 << 8))
#define OMAP3430_REV_ES3_1	(OMAP343X_CLASS | (0x4 << 8))
#define OMAP3430_REV_ES3_1_2	(OMAP343X_CLASS | (0x5 << 8))

#define OMAP363X_CLASS		0x36300034
#define OMAP3630_REV_ES1_0	OMAP363X_CLASS
#define OMAP3630_REV_ES1_1	(OMAP363X_CLASS | (0x1 << 8))
#define OMAP3630_REV_ES1_2	(OMAP363X_CLASS | (0x2 << 8))

#define TI816X_CLASS		0x81600081
#define TI8168_REV_ES1_0	TI816X_CLASS
#define TI8168_REV_ES1_1	(TI816X_CLASS | (0x1 << 8))
#define TI8168_REV_ES2_0	(TI816X_CLASS | (0x2 << 8))
#define TI8168_REV_ES2_1	(TI816X_CLASS | (0x3 << 8))

#define TI814X_CLASS		0x81400081
#define TI8148_REV_ES1_0	TI814X_CLASS
#define TI8148_REV_ES2_0	(TI814X_CLASS | (0x1 << 8))
#define TI8148_REV_ES2_1	(TI814X_CLASS | (0x2 << 8))

#define AM35XX_CLASS		0x35170034
#define AM35XX_REV_ES1_0	AM35XX_CLASS
#define AM35XX_REV_ES1_1	(AM35XX_CLASS | (0x1 << 8))

#define AM335X_CLASS		0x33500033
#define AM335X_REV_ES1_0	AM335X_CLASS
#define AM335X_REV_ES2_0	(AM335X_CLASS | (0x1 << 8))
#define AM335X_REV_ES2_1	(AM335X_CLASS | (0x2 << 8))

#define AM437X_CLASS		0x43700000
#define AM437X_REV_ES1_0	(AM437X_CLASS | (0x10 << 8))
#define AM437X_REV_ES1_1	(AM437X_CLASS | (0x11 << 8))
#define AM437X_REV_ES1_2	(AM437X_CLASS | (0x12 << 8))

#define OMAP443X_CLASS		0x44300044
#define OMAP4430_REV_ES1_0	(OMAP443X_CLASS | (0x10 << 8))
#define OMAP4430_REV_ES2_0	(OMAP443X_CLASS | (0x20 << 8))
#define OMAP4430_REV_ES2_1	(OMAP443X_CLASS | (0x21 << 8))
#define OMAP4430_REV_ES2_2	(OMAP443X_CLASS | (0x22 << 8))
#define OMAP4430_REV_ES2_3	(OMAP443X_CLASS | (0x23 << 8))

#define OMAP446X_CLASS		0x44600044
#define OMAP4460_REV_ES1_0	(OMAP446X_CLASS | (0x10 << 8))
#define OMAP4460_REV_ES1_1	(OMAP446X_CLASS | (0x11 << 8))

#define OMAP447X_CLASS		0x44700044
#define OMAP4470_REV_ES1_0	(OMAP447X_CLASS | (0x10 << 8))

#define OMAP54XX_CLASS		0x54000054
#define OMAP5430_REV_ES2_0	(OMAP54XX_CLASS | (0x30 << 16) | (0x20 << 8))
#define OMAP5432_REV_ES2_0	(OMAP54XX_CLASS | (0x32 << 16) | (0x20 << 8))

#define DRA7XX_CLASS		0x07000000
#define DRA752_REV_ES1_0	(DRA7XX_CLASS | (0x52 << 16) | (0x10 << 8))
#define DRA752_REV_ES1_1	(DRA7XX_CLASS | (0x52 << 16) | (0x11 << 8))
#define DRA722_REV_ES1_0	(DRA7XX_CLASS | (0x22 << 16) | (0x10 << 8))

void omap2xxx_check_revision(void);
void omap3xxx_check_revision(void);
void omap4xxx_check_revision(void);
void omap5xxx_check_revision(void);
void dra7xxx_check_revision(void);
void omap3xxx_check_features(void);
void ti81xx_check_features(void);
void am33xx_check_features(void);
void omap4xxx_check_features(void);

/*
 * Runtime detection of OMAP3 features
 *
 * OMAP3_HAS_IO_CHAIN_CTRL: Some later members of the OMAP3 chip
 *    family have OS-level control over the I/O chain clock.  This is
 *    to avoid a window during which wakeups could potentially be lost
 *    during powerdomain transitions.  If this bit is set, it
 *    indicates that the chip does support OS-level control of this
 *    feature.
 */
extern u32 omap_features;

#define OMAP3_HAS_L2CACHE		BIT(0)
#define OMAP3_HAS_IVA			BIT(1)
#define OMAP3_HAS_SGX			BIT(2)
#define OMAP3_HAS_NEON			BIT(3)
#define OMAP3_HAS_ISP			BIT(4)
#define OMAP3_HAS_192MHZ_CLK		BIT(5)
#define OMAP3_HAS_IO_WAKEUP		BIT(6)
#define OMAP3_HAS_SDRC			BIT(7)
#define OMAP3_HAS_IO_CHAIN_CTRL		BIT(8)
#define OMAP4_HAS_PERF_SILICON		BIT(9)


#define OMAP3_HAS_FEATURE(feat,flag)			\
static inline unsigned int omap3_has_ ##feat(void)	\
{							\
	return omap_features & OMAP3_HAS_ ##flag;	\
}							\

OMAP3_HAS_FEATURE(l2cache, L2CACHE)
OMAP3_HAS_FEATURE(sgx, SGX)
OMAP3_HAS_FEATURE(iva, IVA)
OMAP3_HAS_FEATURE(neon, NEON)
OMAP3_HAS_FEATURE(isp, ISP)
OMAP3_HAS_FEATURE(192mhz_clk, 192MHZ_CLK)
OMAP3_HAS_FEATURE(io_wakeup, IO_WAKEUP)
OMAP3_HAS_FEATURE(sdrc, SDRC)
OMAP3_HAS_FEATURE(io_chain_ctrl, IO_CHAIN_CTRL)

/*
 * Runtime detection of OMAP4 features
 */
#define OMAP4_HAS_FEATURE(feat, flag)			\
static inline unsigned int omap4_has_ ##feat(void)	\
{							\
	return omap_features & OMAP4_HAS_ ##flag;	\
}							\

OMAP4_HAS_FEATURE(perf_silicon, PERF_SILICON)

/*
 * We need to make sure omap initcalls don't run when
 * multiplatform kernels are booted on other SoCs.
 */
#define omap_initcall(level, fn)		\
static int __init __used __##fn(void)		\
{						\
	if (!soc_is_omap())			\
		return 0;			\
	return fn();				\
}						\
level(__##fn);

#define omap_early_initcall(fn)		omap_initcall(early_initcall, fn)
#define omap_core_initcall(fn)		omap_initcall(core_initcall, fn)
#define omap_postcore_initcall(fn)	omap_initcall(postcore_initcall, fn)
#define omap_arch_initcall(fn)		omap_initcall(arch_initcall, fn)
#define omap_subsys_initcall(fn)	omap_initcall(subsys_initcall, fn)
#define omap_device_initcall(fn)	omap_initcall(device_initcall, fn)
#define omap_late_initcall(fn)		omap_initcall(late_initcall, fn)
#define omap_late_initcall_sync(fn)	omap_initcall(late_initcall_sync, fn)

#endif	/* __ASSEMBLY__ */