Merge tag 'pm-merge' of git://git.kernel.org/pub/scm/linux/kernel/git/arm/arm-soc

[mirror_ubuntu-zesty-kernel.git] / arch / arm / mach-omap2 / prm.h

diff --git a/arch/arm/mach-omap2/prm.h b/arch/arm/mach-omap2/prm.h
index 39d562169d185d11a3a3d5aebcaa541754423dea..ac25ae6667cf92c448d37a9fc25058d69f26be19 100644 (file)
--- a/arch/arm/mach-omap2/prm.h
+++ b/arch/arm/mach-omap2/prm.h
@@ -1,7 +1,7 @@
 /*
  * OMAP2/3/4 Power/Reset Management (PRM) bitfield definitions
  *
- * Copyright (C) 2007-2009 Texas Instruments, Inc.
+ * Copyright (C) 2007-2009, 2012 Texas Instruments, Inc.
  * Copyright (C) 2010 Nokia Corporation
  *
  * Paul Walmsley
@@ -15,6 +15,28 @@
 
 #include "prcm-common.h"
 
+# ifndef __ASSEMBLER__
+extern void __iomem *prm_base;
+extern void omap2_set_globals_prm(void __iomem *prm);
+# endif
+
+
+/*
+ * 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
  *
@@ -52,5 +74,67 @@
 #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
+ *
+ * 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);
+};
+
+extern int prm_register(struct prm_ll_data *pld);
+extern int prm_unregister(struct prm_ll_data *pld);
+
+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);
+
+#endif
+
 
 #endif