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-rw-r--r--arch/arm/mach-omap2/pm-debug.c152
1 files changed, 152 insertions, 0 deletions
diff --git a/arch/arm/mach-omap2/pm-debug.c b/arch/arm/mach-omap2/pm-debug.c
new file mode 100644
index 000000000000..6cc375a275be
--- /dev/null
+++ b/arch/arm/mach-omap2/pm-debug.c
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1/*
2 * OMAP Power Management debug routines
3 *
4 * Copyright (C) 2005 Texas Instruments, Inc.
5 * Copyright (C) 2006-2008 Nokia Corporation
6 *
7 * Written by:
8 * Richard Woodruff <r-woodruff2@ti.com>
9 * Tony Lindgren
10 * Juha Yrjola
11 * Amit Kucheria <amit.kucheria@nokia.com>
12 * Igor Stoppa <igor.stoppa@nokia.com>
13 * Jouni Hogander
14 *
15 * Based on pm.c for omap2
16 *
17 * This program is free software; you can redistribute it and/or modify
18 * it under the terms of the GNU General Public License version 2 as
19 * published by the Free Software Foundation.
20 */
21
22#include <linux/kernel.h>
23#include <linux/timer.h>
24#include <linux/clk.h>
25#include <linux/err.h>
26#include <linux/io.h>
27
28#include <mach/clock.h>
29#include <mach/board.h>
30
31#include "prm.h"
32#include "cm.h"
33#include "pm.h"
34
35int omap2_pm_debug;
36
37#define DUMP_PRM_MOD_REG(mod, reg) \
38 regs[reg_count].name = #mod "." #reg; \
39 regs[reg_count++].val = prm_read_mod_reg(mod, reg)
40#define DUMP_CM_MOD_REG(mod, reg) \
41 regs[reg_count].name = #mod "." #reg; \
42 regs[reg_count++].val = cm_read_mod_reg(mod, reg)
43#define DUMP_PRM_REG(reg) \
44 regs[reg_count].name = #reg; \
45 regs[reg_count++].val = __raw_readl(reg)
46#define DUMP_CM_REG(reg) \
47 regs[reg_count].name = #reg; \
48 regs[reg_count++].val = __raw_readl(reg)
49#define DUMP_INTC_REG(reg, off) \
50 regs[reg_count].name = #reg; \
51 regs[reg_count++].val = __raw_readl(IO_ADDRESS(0x480fe000 + (off)))
52
53void omap2_pm_dump(int mode, int resume, unsigned int us)
54{
55 struct reg {
56 const char *name;
57 u32 val;
58 } regs[32];
59 int reg_count = 0, i;
60 const char *s1 = NULL, *s2 = NULL;
61
62 if (!resume) {
63#if 0
64 /* MPU */
65 DUMP_PRM_MOD_REG(OCP_MOD, OMAP2_PRM_IRQENABLE_MPU_OFFSET);
66 DUMP_CM_MOD_REG(MPU_MOD, CM_CLKSTCTRL);
67 DUMP_PRM_MOD_REG(MPU_MOD, PM_PWSTCTRL);
68 DUMP_PRM_MOD_REG(MPU_MOD, PM_PWSTST);
69 DUMP_PRM_MOD_REG(MPU_MOD, PM_WKDEP);
70#endif
71#if 0
72 /* INTC */
73 DUMP_INTC_REG(INTC_MIR0, 0x0084);
74 DUMP_INTC_REG(INTC_MIR1, 0x00a4);
75 DUMP_INTC_REG(INTC_MIR2, 0x00c4);
76#endif
77#if 0
78 DUMP_CM_MOD_REG(CORE_MOD, CM_FCLKEN1);
79 if (cpu_is_omap24xx()) {
80 DUMP_CM_MOD_REG(CORE_MOD, OMAP24XX_CM_FCLKEN2);
81 DUMP_PRM_MOD_REG(OMAP24XX_GR_MOD,
82 OMAP2_PRCM_CLKEMUL_CTRL_OFFSET);
83 DUMP_PRM_MOD_REG(OMAP24XX_GR_MOD,
84 OMAP2_PRCM_CLKSRC_CTRL_OFFSET);
85 }
86 DUMP_CM_MOD_REG(WKUP_MOD, CM_FCLKEN);
87 DUMP_CM_MOD_REG(CORE_MOD, CM_ICLKEN1);
88 DUMP_CM_MOD_REG(CORE_MOD, CM_ICLKEN2);
89 DUMP_CM_MOD_REG(WKUP_MOD, CM_ICLKEN);
90 DUMP_CM_MOD_REG(PLL_MOD, CM_CLKEN);
91 DUMP_CM_MOD_REG(PLL_MOD, CM_AUTOIDLE);
92 DUMP_PRM_MOD_REG(CORE_MOD, PM_PWSTST);
93#endif
94#if 0
95 /* DSP */
96 if (cpu_is_omap24xx()) {
97 DUMP_CM_MOD_REG(OMAP24XX_DSP_MOD, CM_FCLKEN);
98 DUMP_CM_MOD_REG(OMAP24XX_DSP_MOD, CM_ICLKEN);
99 DUMP_CM_MOD_REG(OMAP24XX_DSP_MOD, CM_IDLEST);
100 DUMP_CM_MOD_REG(OMAP24XX_DSP_MOD, CM_AUTOIDLE);
101 DUMP_CM_MOD_REG(OMAP24XX_DSP_MOD, CM_CLKSEL);
102 DUMP_CM_MOD_REG(OMAP24XX_DSP_MOD, CM_CLKSTCTRL);
103 DUMP_PRM_MOD_REG(OMAP24XX_DSP_MOD, RM_RSTCTRL);
104 DUMP_PRM_MOD_REG(OMAP24XX_DSP_MOD, RM_RSTST);
105 DUMP_PRM_MOD_REG(OMAP24XX_DSP_MOD, PM_PWSTCTRL);
106 DUMP_PRM_MOD_REG(OMAP24XX_DSP_MOD, PM_PWSTST);
107 }
108#endif
109 } else {
110 DUMP_PRM_MOD_REG(CORE_MOD, PM_WKST1);
111 if (cpu_is_omap24xx())
112 DUMP_PRM_MOD_REG(CORE_MOD, OMAP24XX_PM_WKST2);
113 DUMP_PRM_MOD_REG(WKUP_MOD, PM_WKST);
114 DUMP_PRM_MOD_REG(OCP_MOD, OMAP2_PRCM_IRQSTATUS_MPU_OFFSET);
115#if 1
116 DUMP_INTC_REG(INTC_PENDING_IRQ0, 0x0098);
117 DUMP_INTC_REG(INTC_PENDING_IRQ1, 0x00b8);
118 DUMP_INTC_REG(INTC_PENDING_IRQ2, 0x00d8);
119#endif
120 }
121
122 switch (mode) {
123 case 0:
124 s1 = "full";
125 s2 = "retention";
126 break;
127 case 1:
128 s1 = "MPU";
129 s2 = "retention";
130 break;
131 case 2:
132 s1 = "MPU";
133 s2 = "idle";
134 break;
135 }
136
137 if (!resume)
138#ifdef CONFIG_NO_HZ
139 printk(KERN_INFO
140 "--- Going to %s %s (next timer after %u ms)\n", s1, s2,
141 jiffies_to_msecs(get_next_timer_interrupt(jiffies) -
142 jiffies));
143#else
144 printk(KERN_INFO "--- Going to %s %s\n", s1, s2);
145#endif
146 else
147 printk(KERN_INFO "--- Woke up (slept for %u.%03u ms)\n",
148 us / 1000, us % 1000);
149
150 for (i = 0; i < reg_count; i++)
151 printk(KERN_INFO "%-20s: 0x%08x\n", regs[i].name, regs[i].val);
152}