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Diffstat (limited to 'arch/arm/mach-omap2/pm-debug.c')
-rw-r--r--arch/arm/mach-omap2/pm-debug.c372
1 files changed, 371 insertions, 1 deletions
diff --git a/arch/arm/mach-omap2/pm-debug.c b/arch/arm/mach-omap2/pm-debug.c
index 4411163e012..e01da45c053 100644
--- a/arch/arm/mach-omap2/pm-debug.c
+++ b/arch/arm/mach-omap2/pm-debug.c
@@ -38,12 +38,155 @@
#include "prm2xxx_3xxx.h"
#include "pm.h"
+int omap2_pm_debug;
u32 enable_off_mode;
+u32 sleep_while_idle;
+u32 wakeup_timer_seconds;
+u32 wakeup_timer_milliseconds;
+
+#define DUMP_PRM_MOD_REG(mod, reg) \
+ regs[reg_count].name = #mod "." #reg; \
+ regs[reg_count++].val = omap2_prm_read_mod_reg(mod, reg)
+#define DUMP_CM_MOD_REG(mod, reg) \
+ regs[reg_count].name = #mod "." #reg; \
+ regs[reg_count++].val = omap2_cm_read_mod_reg(mod, reg)
+#define DUMP_PRM_REG(reg) \
+ regs[reg_count].name = #reg; \
+ regs[reg_count++].val = __raw_readl(reg)
+#define DUMP_CM_REG(reg) \
+ regs[reg_count].name = #reg; \
+ regs[reg_count++].val = __raw_readl(reg)
+#define DUMP_INTC_REG(reg, off) \
+ regs[reg_count].name = #reg; \
+ regs[reg_count++].val = \
+ __raw_readl(OMAP2_L4_IO_ADDRESS(0x480fe000 + (off)))
+
+void omap2_pm_dump(int mode, int resume, unsigned int us)
+{
+ struct reg {
+ const char *name;
+ u32 val;
+ } regs[32];
+ int reg_count = 0, i;
+ const char *s1 = NULL, *s2 = NULL;
+
+ if (!resume) {
+#if 0
+ /* MPU */
+ DUMP_PRM_MOD_REG(OCP_MOD, OMAP2_PRM_IRQENABLE_MPU_OFFSET);
+ DUMP_CM_MOD_REG(MPU_MOD, OMAP2_CM_CLKSTCTRL);
+ DUMP_PRM_MOD_REG(MPU_MOD, OMAP2_PM_PWSTCTRL);
+ DUMP_PRM_MOD_REG(MPU_MOD, OMAP2_PM_PWSTST);
+ DUMP_PRM_MOD_REG(MPU_MOD, PM_WKDEP);
+#endif
+#if 0
+ /* INTC */
+ DUMP_INTC_REG(INTC_MIR0, 0x0084);
+ DUMP_INTC_REG(INTC_MIR1, 0x00a4);
+ DUMP_INTC_REG(INTC_MIR2, 0x00c4);
+#endif
+#if 0
+ DUMP_CM_MOD_REG(CORE_MOD, CM_FCLKEN1);
+ if (cpu_is_omap24xx()) {
+ DUMP_CM_MOD_REG(CORE_MOD, OMAP24XX_CM_FCLKEN2);
+ DUMP_PRM_MOD_REG(OMAP24XX_GR_MOD,
+ OMAP2_PRCM_CLKEMUL_CTRL_OFFSET);
+ DUMP_PRM_MOD_REG(OMAP24XX_GR_MOD,
+ OMAP2_PRCM_CLKSRC_CTRL_OFFSET);
+ }
+ DUMP_CM_MOD_REG(WKUP_MOD, CM_FCLKEN);
+ DUMP_CM_MOD_REG(CORE_MOD, CM_ICLKEN1);
+ DUMP_CM_MOD_REG(CORE_MOD, CM_ICLKEN2);
+ DUMP_CM_MOD_REG(WKUP_MOD, CM_ICLKEN);
+ DUMP_CM_MOD_REG(PLL_MOD, CM_CLKEN);
+ DUMP_CM_MOD_REG(PLL_MOD, CM_AUTOIDLE);
+ DUMP_PRM_MOD_REG(CORE_MOD, OMAP2_PM_PWSTST);
+#endif
+#if 0
+ /* DSP */
+ if (cpu_is_omap24xx()) {
+ DUMP_CM_MOD_REG(OMAP24XX_DSP_MOD, CM_FCLKEN);
+ DUMP_CM_MOD_REG(OMAP24XX_DSP_MOD, CM_ICLKEN);
+ DUMP_CM_MOD_REG(OMAP24XX_DSP_MOD, CM_IDLEST);
+ DUMP_CM_MOD_REG(OMAP24XX_DSP_MOD, CM_AUTOIDLE);
+ DUMP_CM_MOD_REG(OMAP24XX_DSP_MOD, CM_CLKSEL);
+ DUMP_CM_MOD_REG(OMAP24XX_DSP_MOD, OMAP2_CM_CLKSTCTRL);
+ DUMP_PRM_MOD_REG(OMAP24XX_DSP_MOD, OMAP2_RM_RSTCTRL);
+ DUMP_PRM_MOD_REG(OMAP24XX_DSP_MOD, OMAP2_RM_RSTST);
+ DUMP_PRM_MOD_REG(OMAP24XX_DSP_MOD, OMAP2_PM_PWSTCTRL);
+ DUMP_PRM_MOD_REG(OMAP24XX_DSP_MOD, OMAP2_PM_PWSTST);
+ }
+#endif
+ } else {
+ DUMP_PRM_MOD_REG(CORE_MOD, PM_WKST1);
+ if (cpu_is_omap24xx())
+ DUMP_PRM_MOD_REG(CORE_MOD, OMAP24XX_PM_WKST2);
+ DUMP_PRM_MOD_REG(WKUP_MOD, PM_WKST);
+ DUMP_PRM_MOD_REG(OCP_MOD, OMAP2_PRCM_IRQSTATUS_MPU_OFFSET);
+#if 1
+ DUMP_INTC_REG(INTC_PENDING_IRQ0, 0x0098);
+ DUMP_INTC_REG(INTC_PENDING_IRQ1, 0x00b8);
+ DUMP_INTC_REG(INTC_PENDING_IRQ2, 0x00d8);
+#endif
+ }
+
+ switch (mode) {
+ case 0:
+ s1 = "full";
+ s2 = "retention";
+ break;
+ case 1:
+ s1 = "MPU";
+ s2 = "retention";
+ break;
+ case 2:
+ s1 = "MPU";
+ s2 = "idle";
+ break;
+ }
+
+ if (!resume)
+#ifdef CONFIG_NO_HZ
+ printk(KERN_INFO
+ "--- Going to %s %s (next timer after %u ms)\n", s1, s2,
+ jiffies_to_msecs(get_next_timer_interrupt(jiffies) -
+ jiffies));
+#else
+ printk(KERN_INFO "--- Going to %s %s\n", s1, s2);
+#endif
+ else
+ printk(KERN_INFO "--- Woke up (slept for %u.%03u ms)\n",
+ us / 1000, us % 1000);
+
+ for (i = 0; i < reg_count; i++)
+ printk(KERN_INFO "%-20s: 0x%08x\n", regs[i].name, regs[i].val);
+}
+
+void omap2_pm_wakeup_on_timer(u32 seconds, u32 milliseconds)
+{
+ u32 tick_rate, cycles;
+
+ if (!seconds && !milliseconds)
+ return;
+
+ tick_rate = clk_get_rate(omap_dm_timer_get_fclk(gptimer_wakeup));
+ cycles = tick_rate * seconds + tick_rate * milliseconds / 1000;
+ omap_dm_timer_stop(gptimer_wakeup);
+ omap_dm_timer_set_load_start(gptimer_wakeup, 0, 0xffffffff - cycles);
+
+ pr_info("PM: Resume timer in %u.%03u secs"
+ " (%d ticks at %d ticks/sec.)\n",
+ seconds, milliseconds, cycles, tick_rate);
+}
#ifdef CONFIG_DEBUG_FS
#include <linux/debugfs.h>
#include <linux/seq_file.h>
+static void pm_dbg_regset_store(u32 *ptr);
+
+static struct dentry *pm_dbg_dir;
+
static int pm_dbg_init_done;
static int pm_dbg_init(void);
@@ -53,6 +196,160 @@ enum {
DEBUG_FILE_TIMERS,
};
+struct pm_module_def {
+ char name[8]; /* Name of the module */
+ short type; /* CM or PRM */
+ unsigned short offset;
+ int low; /* First register address on this module */
+ int high; /* Last register address on this module */
+};
+
+#define MOD_CM 0
+#define MOD_PRM 1
+
+static const struct pm_module_def *pm_dbg_reg_modules;
+static const struct pm_module_def omap3_pm_reg_modules[] = {
+ { "IVA2", MOD_CM, OMAP3430_IVA2_MOD, 0, 0x4c },
+ { "OCP", MOD_CM, OCP_MOD, 0, 0x10 },
+ { "MPU", MOD_CM, MPU_MOD, 4, 0x4c },
+ { "CORE", MOD_CM, CORE_MOD, 0, 0x4c },
+ { "SGX", MOD_CM, OMAP3430ES2_SGX_MOD, 0, 0x4c },
+ { "WKUP", MOD_CM, WKUP_MOD, 0, 0x40 },
+ { "CCR", MOD_CM, PLL_MOD, 0, 0x70 },
+ { "DSS", MOD_CM, OMAP3430_DSS_MOD, 0, 0x4c },
+ { "CAM", MOD_CM, OMAP3430_CAM_MOD, 0, 0x4c },
+ { "PER", MOD_CM, OMAP3430_PER_MOD, 0, 0x4c },
+ { "EMU", MOD_CM, OMAP3430_EMU_MOD, 0x40, 0x54 },
+ { "NEON", MOD_CM, OMAP3430_NEON_MOD, 0x20, 0x48 },
+ { "USB", MOD_CM, OMAP3430ES2_USBHOST_MOD, 0, 0x4c },
+
+ { "IVA2", MOD_PRM, OMAP3430_IVA2_MOD, 0x50, 0xfc },
+ { "OCP", MOD_PRM, OCP_MOD, 4, 0x1c },
+ { "MPU", MOD_PRM, MPU_MOD, 0x58, 0xe8 },
+ { "CORE", MOD_PRM, CORE_MOD, 0x58, 0xf8 },
+ { "SGX", MOD_PRM, OMAP3430ES2_SGX_MOD, 0x58, 0xe8 },
+ { "WKUP", MOD_PRM, WKUP_MOD, 0xa0, 0xb0 },
+ { "CCR", MOD_PRM, PLL_MOD, 0x40, 0x70 },
+ { "DSS", MOD_PRM, OMAP3430_DSS_MOD, 0x58, 0xe8 },
+ { "CAM", MOD_PRM, OMAP3430_CAM_MOD, 0x58, 0xe8 },
+ { "PER", MOD_PRM, OMAP3430_PER_MOD, 0x58, 0xe8 },
+ { "EMU", MOD_PRM, OMAP3430_EMU_MOD, 0x58, 0xe4 },
+ { "GLBL", MOD_PRM, OMAP3430_GR_MOD, 0x20, 0xe4 },
+ { "NEON", MOD_PRM, OMAP3430_NEON_MOD, 0x58, 0xe8 },
+ { "USB", MOD_PRM, OMAP3430ES2_USBHOST_MOD, 0x58, 0xe8 },
+ { "", 0, 0, 0, 0 },
+};
+
+#define PM_DBG_MAX_REG_SETS 4
+
+static void *pm_dbg_reg_set[PM_DBG_MAX_REG_SETS];
+
+static int pm_dbg_get_regset_size(void)
+{
+ static int regset_size;
+
+ if (regset_size == 0) {
+ int i = 0;
+
+ while (pm_dbg_reg_modules[i].name[0] != 0) {
+ regset_size += pm_dbg_reg_modules[i].high +
+ 4 - pm_dbg_reg_modules[i].low;
+ i++;
+ }
+ }
+ return regset_size;
+}
+
+static int pm_dbg_show_regs(struct seq_file *s, void *unused)
+{
+ int i, j;
+ unsigned long val;
+ int reg_set = (int)s->private;
+ u32 *ptr;
+ void *store = NULL;
+ int regs;
+ int linefeed;
+
+ if (reg_set == 0) {
+ store = kmalloc(pm_dbg_get_regset_size(), GFP_KERNEL);
+ ptr = store;
+ pm_dbg_regset_store(ptr);
+ } else {
+ ptr = pm_dbg_reg_set[reg_set - 1];
+ }
+
+ i = 0;
+
+ while (pm_dbg_reg_modules[i].name[0] != 0) {
+ regs = 0;
+ linefeed = 0;
+ if (pm_dbg_reg_modules[i].type == MOD_CM)
+ seq_printf(s, "MOD: CM_%s (%08x)\n",
+ pm_dbg_reg_modules[i].name,
+ (u32)(OMAP3430_CM_BASE +
+ pm_dbg_reg_modules[i].offset));
+ else
+ seq_printf(s, "MOD: PRM_%s (%08x)\n",
+ pm_dbg_reg_modules[i].name,
+ (u32)(OMAP3430_PRM_BASE +
+ pm_dbg_reg_modules[i].offset));
+
+ for (j = pm_dbg_reg_modules[i].low;
+ j <= pm_dbg_reg_modules[i].high; j += 4) {
+ val = *(ptr++);
+ if (val != 0) {
+ regs++;
+ if (linefeed) {
+ seq_printf(s, "\n");
+ linefeed = 0;
+ }
+ seq_printf(s, " %02x => %08lx", j, val);
+ if (regs % 4 == 0)
+ linefeed = 1;
+ }
+ }
+ seq_printf(s, "\n");
+ i++;
+ }
+
+ if (store != NULL)
+ kfree(store);
+
+ return 0;
+}
+
+static void pm_dbg_regset_store(u32 *ptr)
+{
+ int i, j;
+ u32 val;
+
+ i = 0;
+
+ while (pm_dbg_reg_modules[i].name[0] != 0) {
+ for (j = pm_dbg_reg_modules[i].low;
+ j <= pm_dbg_reg_modules[i].high; j += 4) {
+ if (pm_dbg_reg_modules[i].type == MOD_CM)
+ val = omap2_cm_read_mod_reg(
+ pm_dbg_reg_modules[i].offset, j);
+ else
+ val = omap2_prm_read_mod_reg(
+ pm_dbg_reg_modules[i].offset, j);
+ *(ptr++) = val;
+ }
+ i++;
+ }
+}
+
+int pm_dbg_regset_save(int reg_set)
+{
+ if (pm_dbg_reg_set[reg_set-1] == NULL)
+ return -EINVAL;
+
+ pm_dbg_regset_store(pm_dbg_reg_set[reg_set-1]);
+
+ return 0;
+}
+
static const char pwrdm_state_names[][PWRDM_MAX_PWRSTS] = {
"OFF",
"RET",
@@ -172,6 +469,11 @@ static int pm_dbg_open(struct inode *inode, struct file *file)
};
}
+static int pm_dbg_reg_open(struct inode *inode, struct file *file)
+{
+ return single_open(file, pm_dbg_show_regs, inode->i_private);
+}
+
static const struct file_operations debug_fops = {
.open = pm_dbg_open,
.read = seq_read,
@@ -179,6 +481,40 @@ static const struct file_operations debug_fops = {
.release = single_release,
};
+static const struct file_operations debug_reg_fops = {
+ .open = pm_dbg_reg_open,
+ .read = seq_read,
+ .llseek = seq_lseek,
+ .release = single_release,
+};
+
+int pm_dbg_regset_init(int reg_set)
+{
+ char name[2];
+
+ if (!pm_dbg_init_done)
+ pm_dbg_init();
+
+ if (reg_set < 1 || reg_set > PM_DBG_MAX_REG_SETS ||
+ pm_dbg_reg_set[reg_set-1] != NULL)
+ return -EINVAL;
+
+ pm_dbg_reg_set[reg_set-1] =
+ kmalloc(pm_dbg_get_regset_size(), GFP_KERNEL);
+
+ if (pm_dbg_reg_set[reg_set-1] == NULL)
+ return -ENOMEM;
+
+ if (pm_dbg_dir != NULL) {
+ sprintf(name, "%d", reg_set);
+
+ (void) debugfs_create_file(name, S_IRUGO,
+ pm_dbg_dir, (void *)reg_set, &debug_reg_fops);
+ }
+
+ return 0;
+}
+
static int pwrdm_suspend_get(void *data, u64 *val)
{
int ret = -EINVAL;
@@ -240,6 +576,9 @@ static int option_set(void *data, u64 val)
{
u32 *option = data;
+ if (option == &wakeup_timer_milliseconds && val >= 1000)
+ return -EINVAL;
+
*option = val;
if (option == &enable_off_mode) {
@@ -256,13 +595,22 @@ static int option_set(void *data, u64 val)
DEFINE_SIMPLE_ATTRIBUTE(pm_dbg_option_fops, option_get, option_set, "%llu\n");
-static int __init pm_dbg_init(void)
+static int pm_dbg_init(void)
{
+ int i;
struct dentry *d;
+ char name[2];
if (pm_dbg_init_done)
return 0;
+ if (cpu_is_omap34xx())
+ pm_dbg_reg_modules = omap3_pm_reg_modules;
+ else {
+ printk(KERN_ERR "%s: only OMAP3 supported\n", __func__);
+ return -ENODEV;
+ }
+
d = debugfs_create_dir("pm_debug", NULL);
if (IS_ERR(d))
return PTR_ERR(d);
@@ -274,8 +622,30 @@ static int __init pm_dbg_init(void)
pwrdm_for_each(pwrdms_setup, (void *)d);
+ pm_dbg_dir = debugfs_create_dir("registers", d);
+ if (IS_ERR(pm_dbg_dir))
+ return PTR_ERR(pm_dbg_dir);
+
+ (void) debugfs_create_file("current", S_IRUGO,
+ pm_dbg_dir, (void *)0, &debug_reg_fops);
+
+ for (i = 0; i < PM_DBG_MAX_REG_SETS; i++)
+ if (pm_dbg_reg_set[i] != NULL) {
+ sprintf(name, "%d", i+1);
+ (void) debugfs_create_file(name, S_IRUGO,
+ pm_dbg_dir, (void *)(i+1), &debug_reg_fops);
+
+ }
+
(void) debugfs_create_file("enable_off_mode", S_IRUGO | S_IWUSR, d,
&enable_off_mode, &pm_dbg_option_fops);
+ (void) debugfs_create_file("sleep_while_idle", S_IRUGO | S_IWUSR, d,
+ &sleep_while_idle, &pm_dbg_option_fops);
+ (void) debugfs_create_file("wakeup_timer_seconds", S_IRUGO | S_IWUSR, d,
+ &wakeup_timer_seconds, &pm_dbg_option_fops);
+ (void) debugfs_create_file("wakeup_timer_milliseconds",
+ S_IRUGO | S_IWUSR, d, &wakeup_timer_milliseconds,
+ &pm_dbg_option_fops);
pm_dbg_init_done = 1;
return 0;
generated by cgit v1.2.3 (git 2.39.1) at 2025-06-30 16:59:43 +0000