ARM: OMAP2: Add common register access for 24xx and 34xx

This patch adds common register access for 24xx and 34xx power
and clock management in order to share code between 24xx and 34xx.

Only change USB platform init code to use new register access, other
access will be changed in later patches.

Signed-off-by: Paul Walmsley <paul@pwsan.com>
Signed-off-by: Tony Lindgren <tony@atomide.com>

1 files changed, 316 insertions, 0 deletions

diff --git a/arch/arm/mach-omap2/prm.h b/arch/arm/mach-omap2/prm.h
new file mode 100644
index 00000000000..ab7649afd89
--- /dev/null
+++ b/arch/arm/mach-omap2/prm.h
@@ -0,0 +1,316 @@
+#ifndef __ARCH_ARM_MACH_OMAP2_PRM_H
+#define __ARCH_ARM_MACH_OMAP2_PRM_H
+
+/*
+ * OMAP2/3 Power/Reset Management (PRM) register definitions
+ *
+ * Copyright (C) 2007 Texas Instruments, Inc.
+ * Copyright (C) 2007 Nokia Corporation
+ *
+ * Written by Paul Walmsley
+ *
+ * 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 "prcm-common.h"
+
+#ifndef __ASSEMBLER__
+#define OMAP_PRM_REGADDR(module, reg)					\
+	(void __iomem *)IO_ADDRESS(OMAP2_PRM_BASE + (module) + (reg))
+#else
+#define OMAP2420_PRM_REGADDR(module, reg)				\
+			IO_ADDRESS(OMAP2420_PRM_BASE + (module) + (reg))
+#define OMAP2430_PRM_REGADDR(module, reg)				\
+			IO_ADDRESS(OMAP2430_PRM_BASE + (module) + (reg))
+#define OMAP34XX_PRM_REGADDR(module, reg)				\
+			IO_ADDRESS(OMAP3430_PRM_BASE + (module) + (reg))
+#endif
+
+/*
+ * Architecture-specific global PRM registers
+ * Use prm_{read,write}_reg() with these registers.
+ *
+ * With a few exceptions, these are the register names beginning with
+ * PRCM_* on 24xx, and PRM_* on 34xx.  (The exceptions are the
+ * IRQSTATUS and IRQENABLE bits.)
+ *
+ */
+
+#define OMAP24XX_PRCM_REVISION		OMAP_PRM_REGADDR(OCP_MOD, 0x0000)
+#define OMAP24XX_PRCM_SYSCONFIG		OMAP_PRM_REGADDR(OCP_MOD, 0x0010)
+
+#define OMAP24XX_PRCM_IRQSTATUS_MPU	OMAP_PRM_REGADDR(OCP_MOD, 0x0018)
+#define OMAP24XX_PRCM_IRQENABLE_MPU	OMAP_PRM_REGADDR(OCP_MOD, 0x001c)
+
+#define OMAP24XX_PRCM_VOLTCTRL		OMAP_PRM_REGADDR(OCP_MOD, 0x0050)
+#define OMAP24XX_PRCM_VOLTST		OMAP_PRM_REGADDR(OCP_MOD, 0x0054)
+#define OMAP24XX_PRCM_CLKSRC_CTRL	OMAP_PRM_REGADDR(OCP_MOD, 0x0060)
+#define OMAP24XX_PRCM_CLKOUT_CTRL	OMAP_PRM_REGADDR(OCP_MOD, 0x0070)
+#define OMAP24XX_PRCM_CLKEMUL_CTRL	OMAP_PRM_REGADDR(OCP_MOD, 0x0078)
+#define OMAP24XX_PRCM_CLKCFG_CTRL	OMAP_PRM_REGADDR(OCP_MOD, 0x0080)
+#define OMAP24XX_PRCM_CLKCFG_STATUS	OMAP_PRM_REGADDR(OCP_MOD, 0x0084)
+#define OMAP24XX_PRCM_VOLTSETUP		OMAP_PRM_REGADDR(OCP_MOD, 0x0090)
+#define OMAP24XX_PRCM_CLKSSETUP		OMAP_PRM_REGADDR(OCP_MOD, 0x0094)
+#define OMAP24XX_PRCM_POLCTRL		OMAP_PRM_REGADDR(OCP_MOD, 0x0098)
+
+#define OMAP3430_PRM_REVISION		OMAP_PRM_REGADDR(OCP_MOD, 0x0004)
+#define OMAP3430_PRM_SYSCONFIG		OMAP_PRM_REGADDR(OCP_MOD, 0x0014)
+
+#define OMAP3430_PRM_IRQSTATUS_MPU	OMAP_PRM_REGADDR(OCP_MOD, 0x0018)
+#define OMAP3430_PRM_IRQENABLE_MPU	OMAP_PRM_REGADDR(OCP_MOD, 0x001c)
+
+
+#define OMAP3430_PRM_VC_SMPS_SA		OMAP_PRM_REGADDR(OMAP3430_GR_MOD, 0x0020)
+#define OMAP3430_PRM_VC_SMPS_VOL_RA	OMAP_PRM_REGADDR(OMAP3430_GR_MOD, 0x0024)
+#define OMAP3430_PRM_VC_SMPS_CMD_RA	OMAP_PRM_REGADDR(OMAP3430_GR_MOD, 0x0028)
+#define OMAP3430_PRM_VC_CMD_VAL_0	OMAP_PRM_REGADDR(OMAP3430_GR_MOD, 0x002c)
+#define OMAP3430_PRM_VC_CMD_VAL_1	OMAP_PRM_REGADDR(OMAP3430_GR_MOD, 0x0030)
+#define OMAP3430_PRM_VC_CH_CONF		OMAP_PRM_REGADDR(OMAP3430_GR_MOD, 0x0034)
+#define OMAP3430_PRM_VC_I2C_CFG		OMAP_PRM_REGADDR(OMAP3430_GR_MOD, 0x0038)
+#define OMAP3430_PRM_VC_BYPASS_VAL	OMAP_PRM_REGADDR(OMAP3430_GR_MOD, 0x003c)
+#define OMAP3430_PRM_RSTCTRL		OMAP_PRM_REGADDR(OMAP3430_GR_MOD, 0x0050)
+#define OMAP3430_PRM_RSTTIME		OMAP_PRM_REGADDR(OMAP3430_GR_MOD, 0x0054)
+#define OMAP3430_PRM_RSTST		OMAP_PRM_REGADDR(OMAP3430_GR_MOD, 0x0058)
+#define OMAP3430_PRM_VOLTCTRL		OMAP_PRM_REGADDR(OMAP3430_GR_MOD, 0x0060)
+#define OMAP3430_PRM_SRAM_PCHARGE	OMAP_PRM_REGADDR(OMAP3430_GR_MOD, 0x0064)
+#define OMAP3430_PRM_CLKSRC_CTRL	OMAP_PRM_REGADDR(OMAP3430_GR_MOD, 0x0070)
+#define OMAP3430_PRM_VOLTSETUP1		OMAP_PRM_REGADDR(OMAP3430_GR_MOD, 0x0090)
+#define OMAP3430_PRM_VOLTOFFSET		OMAP_PRM_REGADDR(OMAP3430_GR_MOD, 0x0094)
+#define OMAP3430_PRM_CLKSETUP		OMAP_PRM_REGADDR(OMAP3430_GR_MOD, 0x0098)
+#define OMAP3430_PRM_POLCTRL		OMAP_PRM_REGADDR(OMAP3430_GR_MOD, 0x009c)
+#define OMAP3430_PRM_VOLTSETUP2		OMAP_PRM_REGADDR(OMAP3430_GR_MOD, 0x00a0)
+#define OMAP3430_PRM_VP1_CONFIG		OMAP_PRM_REGADDR(OMAP3430_GR_MOD, 0x00b0)
+#define OMAP3430_PRM_VP1_VSTEPMIN	OMAP_PRM_REGADDR(OMAP3430_GR_MOD, 0x00b4)
+#define OMAP3430_PRM_VP1_VSTEPMAX	OMAP_PRM_REGADDR(OMAP3430_GR_MOD, 0x00b8)
+#define OMAP3430_PRM_VP1_VLIMITTO	OMAP_PRM_REGADDR(OMAP3430_GR_MOD, 0x00bc)
+#define OMAP3430_PRM_VP1_VOLTAGE	OMAP_PRM_REGADDR(OMAP3430_GR_MOD, 0x00c0)
+#define OMAP3430_PRM_VP1_STATUS		OMAP_PRM_REGADDR(OMAP3430_GR_MOD, 0x00c4)
+#define OMAP3430_PRM_VP2_CONFIG		OMAP_PRM_REGADDR(OMAP3430_GR_MOD, 0x00d0)
+#define OMAP3430_PRM_VP2_VSTEPMIN	OMAP_PRM_REGADDR(OMAP3430_GR_MOD, 0x00d4)
+#define OMAP3430_PRM_VP2_VSTEPMAX	OMAP_PRM_REGADDR(OMAP3430_GR_MOD, 0x00d8)
+#define OMAP3430_PRM_VP2_VLIMITTO	OMAP_PRM_REGADDR(OMAP3430_GR_MOD, 0x00dc)
+#define OMAP3430_PRM_VP2_VOLTAGE	OMAP_PRM_REGADDR(OMAP3430_GR_MOD, 0x00e0)
+#define OMAP3430_PRM_VP2_STATUS		OMAP_PRM_REGADDR(OMAP3430_GR_MOD, 0x00e4)
+
+#define OMAP3430_PRM_CLKSEL		OMAP_PRM_REGADDR(OMAP3430_CCR_MOD, 0x0040)
+#define OMAP3430_PRM_CLKOUT_CTRL	OMAP_PRM_REGADDR(OMAP3430_CCR_MOD, 0x0070)
+
+/*
+ * Module specific PRM registers from PRM_BASE + domain offset
+ *
+ * Use prm_{read,write}_mod_reg() with these registers.
+ *
+ * With a few exceptions, these are the register names beginning with
+ * {PM,RM}_* on both architectures.  (The exceptions are the IRQSTATUS
+ * and IRQENABLE bits.)
+ *
+ */
+
+/* Registers appearing on both 24xx and 34xx */
+
+#define RM_RSTCTRL					0x0050
+#define RM_RSTTIME					0x0054
+#define RM_RSTST					0x0058
+
+#define PM_WKEN						0x00a0
+#define PM_WKEN1					PM_WKEN
+#define PM_WKST						0x00b0
+#define PM_WKST1					PM_WKST
+#define PM_WKDEP					0x00c8
+#define PM_EVGENCTRL					0x00d4
+#define PM_EVGENONTIM					0x00d8
+#define PM_EVGENOFFTIM					0x00dc
+#define PM_PWSTCTRL					0x00e0
+#define PM_PWSTST					0x00e4
+
+#define OMAP3430_PM_MPUGRPSEL				0x00a4
+#define OMAP3430_PM_MPUGRPSEL1				OMAP3430_PM_MPUGRPSEL
+
+#define OMAP3430_PM_IVAGRPSEL				0x00a8
+#define OMAP3430_PM_IVAGRPSEL1				OMAP3430_PM_IVAGRPSEL
+
+#define OMAP3430_PM_PREPWSTST				0x00e8
+
+#define OMAP3430_PRM_IRQSTATUS_IVA2			0x00f8
+#define OMAP3430_PRM_IRQENABLE_IVA2			0x00fc
+
+
+/* Architecture-specific registers */
+
+#define OMAP24XX_PM_WKEN2				0x00a4
+#define OMAP24XX_PM_WKST2				0x00b4
+
+#define OMAP24XX_PRCM_IRQSTATUS_DSP			0x00f0	/* IVA mod */
+#define OMAP24XX_PRCM_IRQENABLE_DSP			0x00f4	/* IVA mod */
+#define OMAP24XX_PRCM_IRQSTATUS_IVA			0x00f8
+#define OMAP24XX_PRCM_IRQENABLE_IVA			0x00fc
+
+#ifndef __ASSEMBLER__
+
+/* Power/reset management domain register get/set */
+
+static inline void prm_write_mod_reg(u32 val, s16 module, s16 idx)
+{
+	__raw_writel(val, OMAP_PRM_REGADDR(module, idx));
+}
+
+static inline u32 prm_read_mod_reg(s16 module, s16 idx)
+{
+	return __raw_readl(OMAP_PRM_REGADDR(module, idx));
+}
+
+#endif
+
+/*
+ * Bits common to specific registers
+ *
+ * The 3430 register and bit names are generally used,
+ * since they tend to make more sense
+ */
+
+/* PM_EVGENONTIM_MPU */
+/* Named PM_EVEGENONTIM_MPU on the 24XX */
+#define OMAP_ONTIMEVAL_SHIFT				0
+#define OMAP_ONTIMEVAL_MASK				(0xffffffff << 0)
+
+/* PM_EVGENOFFTIM_MPU */
+/* Named PM_EVEGENOFFTIM_MPU on the 24XX */
+#define OMAP_OFFTIMEVAL_SHIFT				0
+#define OMAP_OFFTIMEVAL_MASK				(0xffffffff << 0)
+
+/* PRM_CLKSETUP and PRCM_VOLTSETUP */
+/* Named PRCM_CLKSSETUP on the 24XX */
+#define OMAP_SETUP_TIME_SHIFT				0
+#define OMAP_SETUP_TIME_MASK				(0xffff << 0)
+
+/* PRM_CLKSRC_CTRL */
+/* Named PRCM_CLKSRC_CTRL on the 24XX */
+#define OMAP_SYSCLKDIV_SHIFT				6
+#define OMAP_SYSCLKDIV_MASK				(0x3 << 6)
+#define OMAP_AUTOEXTCLKMODE_SHIFT			3
+#define OMAP_AUTOEXTCLKMODE_MASK			(0x3 << 3)
+#define OMAP_SYSCLKSEL_SHIFT				0
+#define OMAP_SYSCLKSEL_MASK				(0x3 << 0)
+
+/* PM_EVGENCTRL_MPU */
+#define OMAP_OFFLOADMODE_SHIFT				3
+#define OMAP_OFFLOADMODE_MASK				(0x3 << 3)
+#define OMAP_ONLOADMODE_SHIFT				1
+#define OMAP_ONLOADMODE_MASK				(0x3 << 1)
+#define OMAP_ENABLE					(1 << 0)
+
+/* PRM_RSTTIME */
+/* Named RM_RSTTIME_WKUP on the 24xx */
+#define OMAP_RSTTIME2_SHIFT				8
+#define OMAP_RSTTIME2_MASK				(0x1f << 8)
+#define OMAP_RSTTIME1_SHIFT				0
+#define OMAP_RSTTIME1_MASK				(0xff << 0)
+
+
+/* PRM_RSTCTRL */
+/* Named RM_RSTCTRL_WKUP on the 24xx */
+/* 2420 calls RST_DPLL3 'RST_DPLL' */
+#define OMAP_RST_DPLL3					(1 << 2)
+#define OMAP_RST_GS					(1 << 1)
+
+
+/*
+ * Bits common to module-shared registers
+ *
+ * Not all registers of a particular type support all of these bits -
+ * check TRM if you are unsure
+ */
+
+/*
+ * 24XX: PM_PWSTST_CORE, PM_PWSTST_GFX, PM_PWSTST_MPU, PM_PWSTST_DSP
+ *
+ * 2430: PM_PWSTST_MDM
+ *
+ * 3430: PM_PWSTST_IVA2, PM_PWSTST_MPU, PM_PWSTST_CORE, PM_PWSTST_GFX,
+ *	 PM_PWSTST_DSS, PM_PWSTST_CAM, PM_PWSTST_PER, PM_PWSTST_EMU,
+ *	 PM_PWSTST_NEON
+ */
+#define OMAP_INTRANSITION				(1 << 20)
+
+
+/*
+ * 24XX: PM_PWSTST_GFX, PM_PWSTST_DSP
+ *
+ * 2430: PM_PWSTST_MDM
+ *
+ * 3430: PM_PWSTST_IVA2, PM_PWSTST_MPU, PM_PWSTST_CORE, PM_PWSTST_GFX,
+ *	 PM_PWSTST_DSS, PM_PWSTST_CAM, PM_PWSTST_PER, PM_PWSTST_EMU,
+ *	 PM_PWSTST_NEON
+ */
+#define OMAP_POWERSTATEST_SHIFT				0
+#define OMAP_POWERSTATEST_MASK				(0x3 << 0)
+
+/*
+ * 24XX: RM_RSTST_MPU and RM_RSTST_DSP - on 24XX, 'COREDOMAINWKUP_RST' is
+ *	 called 'COREWKUP_RST'
+ *
+ * 3430: RM_RSTST_IVA2, RM_RSTST_MPU, RM_RSTST_GFX, RM_RSTST_DSS,
+ *	 RM_RSTST_CAM, RM_RSTST_PER, RM_RSTST_NEON
+ */
+#define OMAP_COREDOMAINWKUP_RST				(1 << 3)
+
+/*
+ * 24XX: RM_RSTST_MPU, RM_RSTST_GFX, RM_RSTST_DSP
+ *
+ * 2430: RM_RSTST_MDM
+ *
+ * 3430: RM_RSTST_CORE, RM_RSTST_EMU
+ */
+#define OMAP_DOMAINWKUP_RST				(1 << 2)
+
+/*
+ * 24XX: RM_RSTST_MPU, RM_RSTST_WKUP, RM_RSTST_DSP
+ *	 On 24XX, 'GLOBALWARM_RST' is called 'GLOBALWMPU_RST'.
+ *
+ * 2430: RM_RSTST_MDM
+ *
+ * 3430: RM_RSTST_CORE, RM_RSTST_EMU
+ */
+#define OMAP_GLOBALWARM_RST				(1 << 1)
+#define OMAP_GLOBALCOLD_RST				(1 << 0)
+
+/*
+ * 24XX: PM_WKDEP_GFX, PM_WKDEP_MPU, PM_WKDEP_CORE, PM_WKDEP_DSP
+ *	 2420 TRM sometimes uses "EN_WAKEUP" instead of "EN_WKUP"
+ *
+ * 2430: PM_WKDEP_MDM
+ *
+ * 3430: PM_WKDEP_IVA2, PM_WKDEP_GFX, PM_WKDEP_DSS, PM_WKDEP_CAM,
+ *	 PM_WKDEP_PER
+ */
+#define OMAP_EN_WKUP					(1 << 4)
+
+/*
+ * 24XX: PM_PWSTCTRL_MPU, PM_PWSTCTRL_CORE, PM_PWSTCTRL_GFX,
+ *	 PM_PWSTCTRL_DSP
+ *
+ * 2430: PM_PWSTCTRL_MDM
+ *
+ * 3430: PM_PWSTCTRL_IVA2, PM_PWSTCTRL_CORE, PM_PWSTCTRL_GFX,
+ *	 PM_PWSTCTRL_DSS, PM_PWSTCTRL_CAM, PM_PWSTCTRL_PER,
+ *	 PM_PWSTCTRL_NEON
+ */
+#define OMAP_LOGICRETSTATE				(1 << 2)
+
+/*
+ * 24XX: PM_PWSTCTRL_MPU, PM_PWSTCTRL_CORE, PM_PWSTCTRL_GFX,
+ *       PM_PWSTCTRL_DSP, PM_PWSTST_MPU
+ *
+ * 2430: PM_PWSTCTRL_MDM shared bits
+ *
+ * 3430: PM_PWSTCTRL_IVA2, PM_PWSTCTRL_MPU, PM_PWSTCTRL_CORE,
+ *	 PM_PWSTCTRL_GFX, PM_PWSTCTRL_DSS, PM_PWSTCTRL_CAM, PM_PWSTCTRL_PER,
+ *	 PM_PWSTCTRL_NEON shared bits
+ */
+#define OMAP_POWERSTATE_SHIFT				0
+#define OMAP_POWERSTATE_MASK				(0x3 << 0)
+
+
+#endif