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