diff options
| -rw-r--r-- | arch/arm/mach-omap2/pm-debug.c | 226 | ||||
| -rw-r--r-- | arch/arm/mach-omap2/pm.h | 4 |
2 files changed, 229 insertions, 1 deletions
diff --git a/arch/arm/mach-omap2/pm-debug.c b/arch/arm/mach-omap2/pm-debug.c index 7383e85eac2..982aa67f268 100644 --- a/arch/arm/mach-omap2/pm-debug.c +++ b/arch/arm/mach-omap2/pm-debug.c @@ -52,6 +52,8 @@ int omap2_pm_debug; regs[reg_count].name = #reg; \ regs[reg_count++].val = __raw_readl(OMAP2_IO_ADDRESS(0x480fe000 + (off))) +static int __init pm_dbg_init(void); + void omap2_pm_dump(int mode, int resume, unsigned int us) { struct reg { @@ -157,6 +159,8 @@ void omap2_pm_dump(int mode, int resume, unsigned int us) #include <linux/debugfs.h> #include <linux/seq_file.h> +static void pm_dbg_regset_store(u32 *ptr); + struct dentry *pm_dbg_dir; static int pm_dbg_init_done; @@ -166,6 +170,160 @@ 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 = cm_read_mod_reg( + pm_dbg_reg_modules[i].offset, j); + else + val = 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[][4] = { "OFF", "RET", @@ -280,6 +438,11 @@ 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, @@ -287,6 +450,40 @@ 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 __init pwrdms_setup(struct powerdomain *pwrdm, void *unused) { int i; @@ -304,8 +501,20 @@ static int __init pwrdms_setup(struct powerdomain *pwrdm, void *unused) static int __init 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); @@ -317,11 +526,26 @@ static int __init pm_dbg_init(void) pwrdm_for_each(pwrdms_setup, NULL); + 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); + + } + pm_dbg_init_done = 1; return 0; } -late_initcall(pm_dbg_init); +arch_initcall(pm_dbg_init); #else void pm_dbg_update_time(struct powerdomain *pwrdm, int prev) {} diff --git a/arch/arm/mach-omap2/pm.h b/arch/arm/mach-omap2/pm.h index 4589db1c8af..8fa85677018 100644 --- a/arch/arm/mach-omap2/pm.h +++ b/arch/arm/mach-omap2/pm.h @@ -17,10 +17,14 @@ extern void omap2_pm_dump(int mode, int resume, unsigned int us); extern int omap2_pm_debug; extern void pm_dbg_update_time(struct powerdomain *pwrdm, int prev); +extern int pm_dbg_regset_save(int reg_set); +extern int pm_dbg_regset_init(int reg_set); #else #define omap2_pm_dump(mode, resume, us) do {} while (0); #define omap2_pm_debug 0 #define pm_dbg_update_time(pwrdm, prev) do {} while (0); +#define pm_dbg_regset_save(reg_set) do {} while (0); +#define pm_dbg_regset_init(reg_set) do {} while (0); #endif /* CONFIG_PM_DEBUG */ extern void omap24xx_idle_loop_suspend(void); |