diff options
Diffstat (limited to 'kernel/arch/arm/mach-omap2/prm.h')
| -rw-r--r-- | kernel/arch/arm/mach-omap2/prm.h | 187 |
1 files changed, 187 insertions, 0 deletions
diff --git a/kernel/arch/arm/mach-omap2/prm.h b/kernel/arch/arm/mach-omap2/prm.h new file mode 100644 index 000000000..233bc84fb --- /dev/null +++ b/kernel/arch/arm/mach-omap2/prm.h @@ -0,0 +1,187 @@ +/* + * OMAP2/3/4 Power/Reset Management (PRM) bitfield definitions + * + * Copyright (C) 2007-2009, 2012 Texas Instruments, Inc. + * Copyright (C) 2010 Nokia Corporation + * + * 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. + */ +#ifndef __ARCH_ARM_MACH_OMAP2_PRM_H +#define __ARCH_ARM_MACH_OMAP2_PRM_H + +#include "prcm-common.h" + +# ifndef __ASSEMBLER__ +extern void __iomem *prm_base; +extern u16 prm_features; +extern void omap2_set_globals_prm(void __iomem *prm); +int omap_prcm_init(void); +int omap2_prm_base_init(void); +int omap2_prcm_base_init(void); +# endif + +/* + * prm_features flag values + * + * PRM_HAS_IO_WAKEUP: has IO wakeup capability + * PRM_HAS_VOLTAGE: has voltage domains + * PRM_IRQ_DEFAULT: use default irq number for PRM irq + */ +#define PRM_HAS_IO_WAKEUP BIT(0) +#define PRM_HAS_VOLTAGE BIT(1) +#define PRM_IRQ_DEFAULT BIT(2) + +/* + * MAX_MODULE_SOFTRESET_WAIT: Maximum microseconds to wait for OMAP + * module to softreset + */ +#define MAX_MODULE_SOFTRESET_WAIT 10000 + +/* + * MAX_MODULE_HARDRESET_WAIT: Maximum microseconds to wait for an OMAP + * submodule to exit hardreset + */ +#define MAX_MODULE_HARDRESET_WAIT 10000 + +/* + * Register bitfields + */ + +/* + * 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_MASK (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: 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) + +/* + * Standardized OMAP reset source bits + * + * To the extent these happen to match the hardware register bit + * shifts, it's purely coincidental. Used by omap-wdt.c. + * OMAP_UNKNOWN_RST_SRC_ID_SHIFT is a special value, used whenever + * there are any bits remaining in the global PRM_RSTST register that + * haven't been identified, or when the PRM code for the current SoC + * doesn't know how to interpret the register. + */ +#define OMAP_GLOBAL_COLD_RST_SRC_ID_SHIFT 0 +#define OMAP_GLOBAL_WARM_RST_SRC_ID_SHIFT 1 +#define OMAP_SECU_VIOL_RST_SRC_ID_SHIFT 2 +#define OMAP_MPU_WD_RST_SRC_ID_SHIFT 3 +#define OMAP_SECU_WD_RST_SRC_ID_SHIFT 4 +#define OMAP_EXTWARM_RST_SRC_ID_SHIFT 5 +#define OMAP_VDD_MPU_VM_RST_SRC_ID_SHIFT 6 +#define OMAP_VDD_IVA_VM_RST_SRC_ID_SHIFT 7 +#define OMAP_VDD_CORE_VM_RST_SRC_ID_SHIFT 8 +#define OMAP_ICEPICK_RST_SRC_ID_SHIFT 9 +#define OMAP_ICECRUSHER_RST_SRC_ID_SHIFT 10 +#define OMAP_C2C_RST_SRC_ID_SHIFT 11 +#define OMAP_UNKNOWN_RST_SRC_ID_SHIFT 12 + +#ifndef __ASSEMBLER__ + +/** + * struct prm_reset_src_map - map register bitshifts to standard bitshifts + * @reg_shift: bitshift in the PRM reset source register + * @std_shift: bitshift equivalent in the standard reset source list + * + * The fields are signed because -1 is used as a terminator. + */ +struct prm_reset_src_map { + s8 reg_shift; + s8 std_shift; +}; + +/** + * struct prm_ll_data - fn ptrs to per-SoC PRM function implementations + * @read_reset_sources: ptr to the SoC PRM-specific get_reset_source impl + * @was_any_context_lost_old: ptr to the SoC PRM context loss test fn + * @clear_context_loss_flags_old: ptr to the SoC PRM context loss flag clear fn + * @late_init: ptr to the late init function + * @assert_hardreset: ptr to the SoC PRM hardreset assert impl + * @deassert_hardreset: ptr to the SoC PRM hardreset deassert impl + * + * XXX @was_any_context_lost_old and @clear_context_loss_flags_old are + * deprecated. + */ +struct prm_ll_data { + u32 (*read_reset_sources)(void); + bool (*was_any_context_lost_old)(u8 part, s16 inst, u16 idx); + void (*clear_context_loss_flags_old)(u8 part, s16 inst, u16 idx); + int (*late_init)(void); + int (*assert_hardreset)(u8 shift, u8 part, s16 prm_mod, u16 offset); + int (*deassert_hardreset)(u8 shift, u8 st_shift, u8 part, s16 prm_mod, + u16 offset, u16 st_offset); + int (*is_hardreset_asserted)(u8 shift, u8 part, s16 prm_mod, + u16 offset); + void (*reset_system)(void); + int (*clear_mod_irqs)(s16 module, u8 regs, u32 wkst_mask); + u32 (*vp_check_txdone)(u8 vp_id); + void (*vp_clear_txdone)(u8 vp_id); +}; + +extern int prm_register(struct prm_ll_data *pld); +extern int prm_unregister(struct prm_ll_data *pld); + +int omap_prm_assert_hardreset(u8 shift, u8 part, s16 prm_mod, u16 offset); +int omap_prm_deassert_hardreset(u8 shift, u8 st_shift, u8 part, s16 prm_mod, + u16 offset, u16 st_offset); +int omap_prm_is_hardreset_asserted(u8 shift, u8 part, s16 prm_mod, u16 offset); +extern u32 prm_read_reset_sources(void); +extern bool prm_was_any_context_lost_old(u8 part, s16 inst, u16 idx); +extern void prm_clear_context_loss_flags_old(u8 part, s16 inst, u16 idx); +void omap_prm_reset_system(void); + +void omap_prm_reconfigure_io_chain(void); +int omap_prm_clear_mod_irqs(s16 module, u8 regs, u32 wkst_mask); + +/* + * Voltage Processor (VP) identifiers + */ +#define OMAP3_VP_VDD_MPU_ID 0 +#define OMAP3_VP_VDD_CORE_ID 1 +#define OMAP4_VP_VDD_CORE_ID 0 +#define OMAP4_VP_VDD_IVA_ID 1 +#define OMAP4_VP_VDD_MPU_ID 2 + +u32 omap_prm_vp_check_txdone(u8 vp_id); +void omap_prm_vp_clear_txdone(u8 vp_id); + +#endif + + +#endif |