Kevin Hilman | 8bd2294 | 2009-05-28 10:56:16 -0700 | [diff] [blame] | 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> |
Peter 'p2' De Schrijver | 331b93f | 2008-10-15 18:13:48 +0300 | [diff] [blame] | 23 | #include <linux/sched.h> |
Kevin Hilman | 8bd2294 | 2009-05-28 10:56:16 -0700 | [diff] [blame] | 24 | #include <linux/clk.h> |
| 25 | #include <linux/err.h> |
| 26 | #include <linux/io.h> |
Tero Kristo | 68d4778 | 2008-11-26 12:26:24 +0200 | [diff] [blame] | 27 | #include <linux/module.h> |
Tejun Heo | 5a0e3ad | 2010-03-24 17:04:11 +0900 | [diff] [blame] | 28 | #include <linux/slab.h> |
Kevin Hilman | 8bd2294 | 2009-05-28 10:56:16 -0700 | [diff] [blame] | 29 | |
Tony Lindgren | ce491cf | 2009-10-20 09:40:47 -0700 | [diff] [blame] | 30 | #include <plat/clock.h> |
| 31 | #include <plat/board.h> |
Paul Walmsley | 72e06d0 | 2010-12-21 21:05:16 -0700 | [diff] [blame] | 32 | #include "powerdomain.h" |
Paul Walmsley | 1540f214 | 2010-12-21 21:05:15 -0700 | [diff] [blame] | 33 | #include "clockdomain.h" |
Santosh Shilimkar | 86b0c1e | 2010-09-15 01:03:59 +0530 | [diff] [blame] | 34 | #include <plat/dmtimer.h> |
Kevin Hilman | 6081dc3 | 2010-12-21 21:31:55 -0700 | [diff] [blame] | 35 | #include <plat/omap-pm.h> |
Kevin Hilman | 8bd2294 | 2009-05-28 10:56:16 -0700 | [diff] [blame] | 36 | |
Paul Walmsley | 59fb659 | 2010-12-21 15:30:55 -0700 | [diff] [blame] | 37 | #include "cm2xxx_3xxx.h" |
| 38 | #include "prm2xxx_3xxx.h" |
Kevin Hilman | 8bd2294 | 2009-05-28 10:56:16 -0700 | [diff] [blame] | 39 | #include "pm.h" |
| 40 | |
| 41 | int omap2_pm_debug; |
Thara Gopinath | 6cdee91 | 2010-08-12 13:52:25 +0530 | [diff] [blame] | 42 | u32 enable_off_mode; |
| 43 | u32 sleep_while_idle; |
| 44 | u32 wakeup_timer_seconds; |
| 45 | u32 wakeup_timer_milliseconds; |
Kevin Hilman | 8bd2294 | 2009-05-28 10:56:16 -0700 | [diff] [blame] | 46 | |
| 47 | #define DUMP_PRM_MOD_REG(mod, reg) \ |
| 48 | regs[reg_count].name = #mod "." #reg; \ |
Paul Walmsley | c4d7e58 | 2010-12-21 21:05:14 -0700 | [diff] [blame] | 49 | regs[reg_count++].val = omap2_prm_read_mod_reg(mod, reg) |
Kevin Hilman | 8bd2294 | 2009-05-28 10:56:16 -0700 | [diff] [blame] | 50 | #define DUMP_CM_MOD_REG(mod, reg) \ |
| 51 | regs[reg_count].name = #mod "." #reg; \ |
Paul Walmsley | c4d7e58 | 2010-12-21 21:05:14 -0700 | [diff] [blame] | 52 | regs[reg_count++].val = omap2_cm_read_mod_reg(mod, reg) |
Kevin Hilman | 8bd2294 | 2009-05-28 10:56:16 -0700 | [diff] [blame] | 53 | #define DUMP_PRM_REG(reg) \ |
| 54 | regs[reg_count].name = #reg; \ |
| 55 | regs[reg_count++].val = __raw_readl(reg) |
| 56 | #define DUMP_CM_REG(reg) \ |
| 57 | regs[reg_count].name = #reg; \ |
| 58 | regs[reg_count++].val = __raw_readl(reg) |
| 59 | #define DUMP_INTC_REG(reg, off) \ |
| 60 | regs[reg_count].name = #reg; \ |
Santosh Shilimkar | 233fd64 | 2009-10-19 15:25:31 -0700 | [diff] [blame] | 61 | regs[reg_count++].val = \ |
| 62 | __raw_readl(OMAP2_L4_IO_ADDRESS(0x480fe000 + (off))) |
Kevin Hilman | 8bd2294 | 2009-05-28 10:56:16 -0700 | [diff] [blame] | 63 | |
| 64 | void omap2_pm_dump(int mode, int resume, unsigned int us) |
| 65 | { |
| 66 | struct reg { |
| 67 | const char *name; |
| 68 | u32 val; |
| 69 | } regs[32]; |
| 70 | int reg_count = 0, i; |
| 71 | const char *s1 = NULL, *s2 = NULL; |
| 72 | |
| 73 | if (!resume) { |
| 74 | #if 0 |
| 75 | /* MPU */ |
| 76 | DUMP_PRM_MOD_REG(OCP_MOD, OMAP2_PRM_IRQENABLE_MPU_OFFSET); |
Abhijit Pagare | 84c0c39 | 2010-01-26 20:12:53 -0700 | [diff] [blame] | 77 | DUMP_CM_MOD_REG(MPU_MOD, OMAP2_CM_CLKSTCTRL); |
Abhijit Pagare | 3790300 | 2010-01-26 20:12:51 -0700 | [diff] [blame] | 78 | DUMP_PRM_MOD_REG(MPU_MOD, OMAP2_PM_PWSTCTRL); |
| 79 | DUMP_PRM_MOD_REG(MPU_MOD, OMAP2_PM_PWSTST); |
Kevin Hilman | 8bd2294 | 2009-05-28 10:56:16 -0700 | [diff] [blame] | 80 | DUMP_PRM_MOD_REG(MPU_MOD, PM_WKDEP); |
| 81 | #endif |
| 82 | #if 0 |
| 83 | /* INTC */ |
| 84 | DUMP_INTC_REG(INTC_MIR0, 0x0084); |
| 85 | DUMP_INTC_REG(INTC_MIR1, 0x00a4); |
| 86 | DUMP_INTC_REG(INTC_MIR2, 0x00c4); |
| 87 | #endif |
| 88 | #if 0 |
| 89 | DUMP_CM_MOD_REG(CORE_MOD, CM_FCLKEN1); |
| 90 | if (cpu_is_omap24xx()) { |
| 91 | DUMP_CM_MOD_REG(CORE_MOD, OMAP24XX_CM_FCLKEN2); |
| 92 | DUMP_PRM_MOD_REG(OMAP24XX_GR_MOD, |
| 93 | OMAP2_PRCM_CLKEMUL_CTRL_OFFSET); |
| 94 | DUMP_PRM_MOD_REG(OMAP24XX_GR_MOD, |
| 95 | OMAP2_PRCM_CLKSRC_CTRL_OFFSET); |
| 96 | } |
| 97 | DUMP_CM_MOD_REG(WKUP_MOD, CM_FCLKEN); |
| 98 | DUMP_CM_MOD_REG(CORE_MOD, CM_ICLKEN1); |
| 99 | DUMP_CM_MOD_REG(CORE_MOD, CM_ICLKEN2); |
| 100 | DUMP_CM_MOD_REG(WKUP_MOD, CM_ICLKEN); |
| 101 | DUMP_CM_MOD_REG(PLL_MOD, CM_CLKEN); |
| 102 | DUMP_CM_MOD_REG(PLL_MOD, CM_AUTOIDLE); |
Abhijit Pagare | 3790300 | 2010-01-26 20:12:51 -0700 | [diff] [blame] | 103 | DUMP_PRM_MOD_REG(CORE_MOD, OMAP2_PM_PWSTST); |
Kevin Hilman | 8bd2294 | 2009-05-28 10:56:16 -0700 | [diff] [blame] | 104 | #endif |
| 105 | #if 0 |
| 106 | /* DSP */ |
| 107 | if (cpu_is_omap24xx()) { |
| 108 | DUMP_CM_MOD_REG(OMAP24XX_DSP_MOD, CM_FCLKEN); |
| 109 | DUMP_CM_MOD_REG(OMAP24XX_DSP_MOD, CM_ICLKEN); |
| 110 | DUMP_CM_MOD_REG(OMAP24XX_DSP_MOD, CM_IDLEST); |
| 111 | DUMP_CM_MOD_REG(OMAP24XX_DSP_MOD, CM_AUTOIDLE); |
| 112 | DUMP_CM_MOD_REG(OMAP24XX_DSP_MOD, CM_CLKSEL); |
Abhijit Pagare | 84c0c39 | 2010-01-26 20:12:53 -0700 | [diff] [blame] | 113 | DUMP_CM_MOD_REG(OMAP24XX_DSP_MOD, OMAP2_CM_CLKSTCTRL); |
Abhijit Pagare | 3790300 | 2010-01-26 20:12:51 -0700 | [diff] [blame] | 114 | DUMP_PRM_MOD_REG(OMAP24XX_DSP_MOD, OMAP2_RM_RSTCTRL); |
| 115 | DUMP_PRM_MOD_REG(OMAP24XX_DSP_MOD, OMAP2_RM_RSTST); |
| 116 | DUMP_PRM_MOD_REG(OMAP24XX_DSP_MOD, OMAP2_PM_PWSTCTRL); |
| 117 | DUMP_PRM_MOD_REG(OMAP24XX_DSP_MOD, OMAP2_PM_PWSTST); |
Kevin Hilman | 8bd2294 | 2009-05-28 10:56:16 -0700 | [diff] [blame] | 118 | } |
| 119 | #endif |
| 120 | } else { |
| 121 | DUMP_PRM_MOD_REG(CORE_MOD, PM_WKST1); |
| 122 | if (cpu_is_omap24xx()) |
| 123 | DUMP_PRM_MOD_REG(CORE_MOD, OMAP24XX_PM_WKST2); |
| 124 | DUMP_PRM_MOD_REG(WKUP_MOD, PM_WKST); |
| 125 | DUMP_PRM_MOD_REG(OCP_MOD, OMAP2_PRCM_IRQSTATUS_MPU_OFFSET); |
| 126 | #if 1 |
| 127 | DUMP_INTC_REG(INTC_PENDING_IRQ0, 0x0098); |
| 128 | DUMP_INTC_REG(INTC_PENDING_IRQ1, 0x00b8); |
| 129 | DUMP_INTC_REG(INTC_PENDING_IRQ2, 0x00d8); |
| 130 | #endif |
| 131 | } |
| 132 | |
| 133 | switch (mode) { |
| 134 | case 0: |
| 135 | s1 = "full"; |
| 136 | s2 = "retention"; |
| 137 | break; |
| 138 | case 1: |
| 139 | s1 = "MPU"; |
| 140 | s2 = "retention"; |
| 141 | break; |
| 142 | case 2: |
| 143 | s1 = "MPU"; |
| 144 | s2 = "idle"; |
| 145 | break; |
| 146 | } |
| 147 | |
| 148 | if (!resume) |
| 149 | #ifdef CONFIG_NO_HZ |
| 150 | printk(KERN_INFO |
| 151 | "--- Going to %s %s (next timer after %u ms)\n", s1, s2, |
| 152 | jiffies_to_msecs(get_next_timer_interrupt(jiffies) - |
| 153 | jiffies)); |
| 154 | #else |
| 155 | printk(KERN_INFO "--- Going to %s %s\n", s1, s2); |
| 156 | #endif |
| 157 | else |
| 158 | printk(KERN_INFO "--- Woke up (slept for %u.%03u ms)\n", |
| 159 | us / 1000, us % 1000); |
| 160 | |
| 161 | for (i = 0; i < reg_count; i++) |
| 162 | printk(KERN_INFO "%-20s: 0x%08x\n", regs[i].name, regs[i].val); |
| 163 | } |
Peter 'p2' De Schrijver | 331b93f | 2008-10-15 18:13:48 +0300 | [diff] [blame] | 164 | |
Kevin Hilman | 9f5ead7 | 2010-12-01 10:55:46 +0000 | [diff] [blame] | 165 | void omap2_pm_wakeup_on_timer(u32 seconds, u32 milliseconds) |
| 166 | { |
| 167 | u32 tick_rate, cycles; |
| 168 | |
| 169 | if (!seconds && !milliseconds) |
| 170 | return; |
| 171 | |
| 172 | tick_rate = clk_get_rate(omap_dm_timer_get_fclk(gptimer_wakeup)); |
| 173 | cycles = tick_rate * seconds + tick_rate * milliseconds / 1000; |
| 174 | omap_dm_timer_stop(gptimer_wakeup); |
| 175 | omap_dm_timer_set_load_start(gptimer_wakeup, 0, 0xffffffff - cycles); |
| 176 | |
| 177 | pr_info("PM: Resume timer in %u.%03u secs" |
| 178 | " (%d ticks at %d ticks/sec.)\n", |
| 179 | seconds, milliseconds, cycles, tick_rate); |
| 180 | } |
| 181 | |
Peter 'p2' De Schrijver | 331b93f | 2008-10-15 18:13:48 +0300 | [diff] [blame] | 182 | #ifdef CONFIG_DEBUG_FS |
| 183 | #include <linux/debugfs.h> |
| 184 | #include <linux/seq_file.h> |
| 185 | |
Tero Kristo | 2811d6b | 2008-10-29 13:31:24 +0200 | [diff] [blame] | 186 | static void pm_dbg_regset_store(u32 *ptr); |
| 187 | |
Manjunath Kondaiah G | 3881573 | 2010-10-08 09:56:37 -0700 | [diff] [blame] | 188 | static struct dentry *pm_dbg_dir; |
Peter 'p2' De Schrijver | 331b93f | 2008-10-15 18:13:48 +0300 | [diff] [blame] | 189 | |
| 190 | static int pm_dbg_init_done; |
| 191 | |
Sergio Aguirre | 6b34f9d | 2010-01-14 11:01:15 -0600 | [diff] [blame] | 192 | static int __init pm_dbg_init(void); |
| 193 | |
Peter 'p2' De Schrijver | 331b93f | 2008-10-15 18:13:48 +0300 | [diff] [blame] | 194 | enum { |
| 195 | DEBUG_FILE_COUNTERS = 0, |
| 196 | DEBUG_FILE_TIMERS, |
| 197 | }; |
| 198 | |
Tero Kristo | 2811d6b | 2008-10-29 13:31:24 +0200 | [diff] [blame] | 199 | struct pm_module_def { |
| 200 | char name[8]; /* Name of the module */ |
| 201 | short type; /* CM or PRM */ |
| 202 | unsigned short offset; |
| 203 | int low; /* First register address on this module */ |
| 204 | int high; /* Last register address on this module */ |
| 205 | }; |
| 206 | |
| 207 | #define MOD_CM 0 |
| 208 | #define MOD_PRM 1 |
| 209 | |
| 210 | static const struct pm_module_def *pm_dbg_reg_modules; |
| 211 | static const struct pm_module_def omap3_pm_reg_modules[] = { |
| 212 | { "IVA2", MOD_CM, OMAP3430_IVA2_MOD, 0, 0x4c }, |
| 213 | { "OCP", MOD_CM, OCP_MOD, 0, 0x10 }, |
| 214 | { "MPU", MOD_CM, MPU_MOD, 4, 0x4c }, |
| 215 | { "CORE", MOD_CM, CORE_MOD, 0, 0x4c }, |
| 216 | { "SGX", MOD_CM, OMAP3430ES2_SGX_MOD, 0, 0x4c }, |
| 217 | { "WKUP", MOD_CM, WKUP_MOD, 0, 0x40 }, |
| 218 | { "CCR", MOD_CM, PLL_MOD, 0, 0x70 }, |
| 219 | { "DSS", MOD_CM, OMAP3430_DSS_MOD, 0, 0x4c }, |
| 220 | { "CAM", MOD_CM, OMAP3430_CAM_MOD, 0, 0x4c }, |
| 221 | { "PER", MOD_CM, OMAP3430_PER_MOD, 0, 0x4c }, |
| 222 | { "EMU", MOD_CM, OMAP3430_EMU_MOD, 0x40, 0x54 }, |
| 223 | { "NEON", MOD_CM, OMAP3430_NEON_MOD, 0x20, 0x48 }, |
| 224 | { "USB", MOD_CM, OMAP3430ES2_USBHOST_MOD, 0, 0x4c }, |
| 225 | |
| 226 | { "IVA2", MOD_PRM, OMAP3430_IVA2_MOD, 0x50, 0xfc }, |
| 227 | { "OCP", MOD_PRM, OCP_MOD, 4, 0x1c }, |
| 228 | { "MPU", MOD_PRM, MPU_MOD, 0x58, 0xe8 }, |
| 229 | { "CORE", MOD_PRM, CORE_MOD, 0x58, 0xf8 }, |
| 230 | { "SGX", MOD_PRM, OMAP3430ES2_SGX_MOD, 0x58, 0xe8 }, |
| 231 | { "WKUP", MOD_PRM, WKUP_MOD, 0xa0, 0xb0 }, |
| 232 | { "CCR", MOD_PRM, PLL_MOD, 0x40, 0x70 }, |
| 233 | { "DSS", MOD_PRM, OMAP3430_DSS_MOD, 0x58, 0xe8 }, |
| 234 | { "CAM", MOD_PRM, OMAP3430_CAM_MOD, 0x58, 0xe8 }, |
| 235 | { "PER", MOD_PRM, OMAP3430_PER_MOD, 0x58, 0xe8 }, |
| 236 | { "EMU", MOD_PRM, OMAP3430_EMU_MOD, 0x58, 0xe4 }, |
| 237 | { "GLBL", MOD_PRM, OMAP3430_GR_MOD, 0x20, 0xe4 }, |
| 238 | { "NEON", MOD_PRM, OMAP3430_NEON_MOD, 0x58, 0xe8 }, |
| 239 | { "USB", MOD_PRM, OMAP3430ES2_USBHOST_MOD, 0x58, 0xe8 }, |
| 240 | { "", 0, 0, 0, 0 }, |
| 241 | }; |
| 242 | |
| 243 | #define PM_DBG_MAX_REG_SETS 4 |
| 244 | |
| 245 | static void *pm_dbg_reg_set[PM_DBG_MAX_REG_SETS]; |
| 246 | |
| 247 | static int pm_dbg_get_regset_size(void) |
| 248 | { |
| 249 | static int regset_size; |
| 250 | |
| 251 | if (regset_size == 0) { |
| 252 | int i = 0; |
| 253 | |
| 254 | while (pm_dbg_reg_modules[i].name[0] != 0) { |
| 255 | regset_size += pm_dbg_reg_modules[i].high + |
| 256 | 4 - pm_dbg_reg_modules[i].low; |
| 257 | i++; |
| 258 | } |
| 259 | } |
| 260 | return regset_size; |
| 261 | } |
| 262 | |
| 263 | static int pm_dbg_show_regs(struct seq_file *s, void *unused) |
| 264 | { |
| 265 | int i, j; |
| 266 | unsigned long val; |
| 267 | int reg_set = (int)s->private; |
| 268 | u32 *ptr; |
| 269 | void *store = NULL; |
| 270 | int regs; |
| 271 | int linefeed; |
| 272 | |
| 273 | if (reg_set == 0) { |
| 274 | store = kmalloc(pm_dbg_get_regset_size(), GFP_KERNEL); |
| 275 | ptr = store; |
| 276 | pm_dbg_regset_store(ptr); |
| 277 | } else { |
| 278 | ptr = pm_dbg_reg_set[reg_set - 1]; |
| 279 | } |
| 280 | |
| 281 | i = 0; |
| 282 | |
| 283 | while (pm_dbg_reg_modules[i].name[0] != 0) { |
| 284 | regs = 0; |
| 285 | linefeed = 0; |
| 286 | if (pm_dbg_reg_modules[i].type == MOD_CM) |
| 287 | seq_printf(s, "MOD: CM_%s (%08x)\n", |
| 288 | pm_dbg_reg_modules[i].name, |
| 289 | (u32)(OMAP3430_CM_BASE + |
| 290 | pm_dbg_reg_modules[i].offset)); |
| 291 | else |
| 292 | seq_printf(s, "MOD: PRM_%s (%08x)\n", |
| 293 | pm_dbg_reg_modules[i].name, |
| 294 | (u32)(OMAP3430_PRM_BASE + |
| 295 | pm_dbg_reg_modules[i].offset)); |
| 296 | |
| 297 | for (j = pm_dbg_reg_modules[i].low; |
| 298 | j <= pm_dbg_reg_modules[i].high; j += 4) { |
| 299 | val = *(ptr++); |
| 300 | if (val != 0) { |
| 301 | regs++; |
| 302 | if (linefeed) { |
| 303 | seq_printf(s, "\n"); |
| 304 | linefeed = 0; |
| 305 | } |
| 306 | seq_printf(s, " %02x => %08lx", j, val); |
| 307 | if (regs % 4 == 0) |
| 308 | linefeed = 1; |
| 309 | } |
| 310 | } |
| 311 | seq_printf(s, "\n"); |
| 312 | i++; |
| 313 | } |
| 314 | |
| 315 | if (store != NULL) |
| 316 | kfree(store); |
| 317 | |
| 318 | return 0; |
| 319 | } |
| 320 | |
| 321 | static void pm_dbg_regset_store(u32 *ptr) |
| 322 | { |
| 323 | int i, j; |
| 324 | u32 val; |
| 325 | |
| 326 | i = 0; |
| 327 | |
| 328 | while (pm_dbg_reg_modules[i].name[0] != 0) { |
| 329 | for (j = pm_dbg_reg_modules[i].low; |
| 330 | j <= pm_dbg_reg_modules[i].high; j += 4) { |
| 331 | if (pm_dbg_reg_modules[i].type == MOD_CM) |
Paul Walmsley | c4d7e58 | 2010-12-21 21:05:14 -0700 | [diff] [blame] | 332 | val = omap2_cm_read_mod_reg( |
Tero Kristo | 2811d6b | 2008-10-29 13:31:24 +0200 | [diff] [blame] | 333 | pm_dbg_reg_modules[i].offset, j); |
| 334 | else |
Paul Walmsley | c4d7e58 | 2010-12-21 21:05:14 -0700 | [diff] [blame] | 335 | val = omap2_prm_read_mod_reg( |
Tero Kristo | 2811d6b | 2008-10-29 13:31:24 +0200 | [diff] [blame] | 336 | pm_dbg_reg_modules[i].offset, j); |
| 337 | *(ptr++) = val; |
| 338 | } |
| 339 | i++; |
| 340 | } |
| 341 | } |
| 342 | |
| 343 | int pm_dbg_regset_save(int reg_set) |
| 344 | { |
| 345 | if (pm_dbg_reg_set[reg_set-1] == NULL) |
| 346 | return -EINVAL; |
| 347 | |
| 348 | pm_dbg_regset_store(pm_dbg_reg_set[reg_set-1]); |
| 349 | |
| 350 | return 0; |
| 351 | } |
| 352 | |
Paul Walmsley | 2354eb5 | 2009-12-08 16:33:12 -0700 | [diff] [blame] | 353 | static const char pwrdm_state_names[][PWRDM_MAX_PWRSTS] = { |
Peter 'p2' De Schrijver | 331b93f | 2008-10-15 18:13:48 +0300 | [diff] [blame] | 354 | "OFF", |
| 355 | "RET", |
| 356 | "INA", |
| 357 | "ON" |
| 358 | }; |
| 359 | |
| 360 | void pm_dbg_update_time(struct powerdomain *pwrdm, int prev) |
| 361 | { |
| 362 | s64 t; |
| 363 | |
| 364 | if (!pm_dbg_init_done) |
| 365 | return ; |
| 366 | |
| 367 | /* Update timer for previous state */ |
| 368 | t = sched_clock(); |
| 369 | |
| 370 | pwrdm->state_timer[prev] += t - pwrdm->timer; |
| 371 | |
| 372 | pwrdm->timer = t; |
| 373 | } |
| 374 | |
| 375 | static int clkdm_dbg_show_counter(struct clockdomain *clkdm, void *user) |
| 376 | { |
| 377 | struct seq_file *s = (struct seq_file *)user; |
| 378 | |
| 379 | if (strcmp(clkdm->name, "emu_clkdm") == 0 || |
| 380 | strcmp(clkdm->name, "wkup_clkdm") == 0 || |
| 381 | strncmp(clkdm->name, "dpll", 4) == 0) |
| 382 | return 0; |
| 383 | |
| 384 | seq_printf(s, "%s->%s (%d)", clkdm->name, |
| 385 | clkdm->pwrdm.ptr->name, |
| 386 | atomic_read(&clkdm->usecount)); |
| 387 | seq_printf(s, "\n"); |
| 388 | |
| 389 | return 0; |
| 390 | } |
| 391 | |
| 392 | static int pwrdm_dbg_show_counter(struct powerdomain *pwrdm, void *user) |
| 393 | { |
| 394 | struct seq_file *s = (struct seq_file *)user; |
| 395 | int i; |
| 396 | |
| 397 | if (strcmp(pwrdm->name, "emu_pwrdm") == 0 || |
| 398 | strcmp(pwrdm->name, "wkup_pwrdm") == 0 || |
| 399 | strncmp(pwrdm->name, "dpll", 4) == 0) |
| 400 | return 0; |
| 401 | |
| 402 | if (pwrdm->state != pwrdm_read_pwrst(pwrdm)) |
| 403 | printk(KERN_ERR "pwrdm state mismatch(%s) %d != %d\n", |
| 404 | pwrdm->name, pwrdm->state, pwrdm_read_pwrst(pwrdm)); |
| 405 | |
| 406 | seq_printf(s, "%s (%s)", pwrdm->name, |
| 407 | pwrdm_state_names[pwrdm->state]); |
Paul Walmsley | 2354eb5 | 2009-12-08 16:33:12 -0700 | [diff] [blame] | 408 | for (i = 0; i < PWRDM_MAX_PWRSTS; i++) |
Peter 'p2' De Schrijver | 331b93f | 2008-10-15 18:13:48 +0300 | [diff] [blame] | 409 | seq_printf(s, ",%s:%d", pwrdm_state_names[i], |
| 410 | pwrdm->state_counter[i]); |
| 411 | |
Thara Gopinath | cde08f8 | 2010-02-24 12:05:50 -0700 | [diff] [blame] | 412 | seq_printf(s, ",RET-LOGIC-OFF:%d", pwrdm->ret_logic_off_counter); |
| 413 | for (i = 0; i < pwrdm->banks; i++) |
| 414 | seq_printf(s, ",RET-MEMBANK%d-OFF:%d", i + 1, |
| 415 | pwrdm->ret_mem_off_counter[i]); |
| 416 | |
Peter 'p2' De Schrijver | 331b93f | 2008-10-15 18:13:48 +0300 | [diff] [blame] | 417 | seq_printf(s, "\n"); |
| 418 | |
| 419 | return 0; |
| 420 | } |
| 421 | |
| 422 | static int pwrdm_dbg_show_timer(struct powerdomain *pwrdm, void *user) |
| 423 | { |
| 424 | struct seq_file *s = (struct seq_file *)user; |
| 425 | int i; |
| 426 | |
| 427 | if (strcmp(pwrdm->name, "emu_pwrdm") == 0 || |
| 428 | strcmp(pwrdm->name, "wkup_pwrdm") == 0 || |
| 429 | strncmp(pwrdm->name, "dpll", 4) == 0) |
| 430 | return 0; |
| 431 | |
| 432 | pwrdm_state_switch(pwrdm); |
| 433 | |
| 434 | seq_printf(s, "%s (%s)", pwrdm->name, |
| 435 | pwrdm_state_names[pwrdm->state]); |
| 436 | |
| 437 | for (i = 0; i < 4; i++) |
| 438 | seq_printf(s, ",%s:%lld", pwrdm_state_names[i], |
| 439 | pwrdm->state_timer[i]); |
| 440 | |
| 441 | seq_printf(s, "\n"); |
| 442 | return 0; |
| 443 | } |
| 444 | |
| 445 | static int pm_dbg_show_counters(struct seq_file *s, void *unused) |
| 446 | { |
| 447 | pwrdm_for_each(pwrdm_dbg_show_counter, s); |
| 448 | clkdm_for_each(clkdm_dbg_show_counter, s); |
| 449 | |
| 450 | return 0; |
| 451 | } |
| 452 | |
| 453 | static int pm_dbg_show_timers(struct seq_file *s, void *unused) |
| 454 | { |
| 455 | pwrdm_for_each(pwrdm_dbg_show_timer, s); |
| 456 | return 0; |
| 457 | } |
| 458 | |
| 459 | static int pm_dbg_open(struct inode *inode, struct file *file) |
| 460 | { |
| 461 | switch ((int)inode->i_private) { |
| 462 | case DEBUG_FILE_COUNTERS: |
| 463 | return single_open(file, pm_dbg_show_counters, |
| 464 | &inode->i_private); |
| 465 | case DEBUG_FILE_TIMERS: |
| 466 | default: |
| 467 | return single_open(file, pm_dbg_show_timers, |
| 468 | &inode->i_private); |
| 469 | }; |
| 470 | } |
| 471 | |
Tero Kristo | 2811d6b | 2008-10-29 13:31:24 +0200 | [diff] [blame] | 472 | static int pm_dbg_reg_open(struct inode *inode, struct file *file) |
| 473 | { |
| 474 | return single_open(file, pm_dbg_show_regs, inode->i_private); |
| 475 | } |
| 476 | |
Peter 'p2' De Schrijver | 331b93f | 2008-10-15 18:13:48 +0300 | [diff] [blame] | 477 | static const struct file_operations debug_fops = { |
| 478 | .open = pm_dbg_open, |
| 479 | .read = seq_read, |
| 480 | .llseek = seq_lseek, |
| 481 | .release = single_release, |
| 482 | }; |
| 483 | |
Tero Kristo | 2811d6b | 2008-10-29 13:31:24 +0200 | [diff] [blame] | 484 | static const struct file_operations debug_reg_fops = { |
| 485 | .open = pm_dbg_reg_open, |
| 486 | .read = seq_read, |
| 487 | .llseek = seq_lseek, |
| 488 | .release = single_release, |
| 489 | }; |
| 490 | |
| 491 | int pm_dbg_regset_init(int reg_set) |
| 492 | { |
| 493 | char name[2]; |
| 494 | |
| 495 | if (!pm_dbg_init_done) |
| 496 | pm_dbg_init(); |
| 497 | |
| 498 | if (reg_set < 1 || reg_set > PM_DBG_MAX_REG_SETS || |
| 499 | pm_dbg_reg_set[reg_set-1] != NULL) |
| 500 | return -EINVAL; |
| 501 | |
| 502 | pm_dbg_reg_set[reg_set-1] = |
| 503 | kmalloc(pm_dbg_get_regset_size(), GFP_KERNEL); |
| 504 | |
| 505 | if (pm_dbg_reg_set[reg_set-1] == NULL) |
| 506 | return -ENOMEM; |
| 507 | |
| 508 | if (pm_dbg_dir != NULL) { |
| 509 | sprintf(name, "%d", reg_set); |
| 510 | |
| 511 | (void) debugfs_create_file(name, S_IRUGO, |
| 512 | pm_dbg_dir, (void *)reg_set, &debug_reg_fops); |
| 513 | } |
| 514 | |
| 515 | return 0; |
| 516 | } |
| 517 | |
Tero Kristo | 68d4778 | 2008-11-26 12:26:24 +0200 | [diff] [blame] | 518 | static int pwrdm_suspend_get(void *data, u64 *val) |
| 519 | { |
Thara Gopinath | 6cdee91 | 2010-08-12 13:52:25 +0530 | [diff] [blame] | 520 | int ret = -EINVAL; |
| 521 | |
| 522 | if (cpu_is_omap34xx()) |
| 523 | ret = omap3_pm_get_suspend_state((struct powerdomain *)data); |
Roel Kluin | 61b17d9 | 2009-12-16 17:22:04 +0100 | [diff] [blame] | 524 | *val = ret; |
Tero Kristo | 68d4778 | 2008-11-26 12:26:24 +0200 | [diff] [blame] | 525 | |
Roel Kluin | 61b17d9 | 2009-12-16 17:22:04 +0100 | [diff] [blame] | 526 | if (ret >= 0) |
Tero Kristo | 68d4778 | 2008-11-26 12:26:24 +0200 | [diff] [blame] | 527 | return 0; |
| 528 | return *val; |
| 529 | } |
| 530 | |
| 531 | static int pwrdm_suspend_set(void *data, u64 val) |
| 532 | { |
Thara Gopinath | 6cdee91 | 2010-08-12 13:52:25 +0530 | [diff] [blame] | 533 | if (cpu_is_omap34xx()) |
| 534 | return omap3_pm_set_suspend_state( |
| 535 | (struct powerdomain *)data, (int)val); |
| 536 | return -EINVAL; |
Tero Kristo | 68d4778 | 2008-11-26 12:26:24 +0200 | [diff] [blame] | 537 | } |
| 538 | |
| 539 | DEFINE_SIMPLE_ATTRIBUTE(pwrdm_suspend_fops, pwrdm_suspend_get, |
| 540 | pwrdm_suspend_set, "%llu\n"); |
| 541 | |
| 542 | static int __init pwrdms_setup(struct powerdomain *pwrdm, void *dir) |
Peter 'p2' De Schrijver | 331b93f | 2008-10-15 18:13:48 +0300 | [diff] [blame] | 543 | { |
| 544 | int i; |
| 545 | s64 t; |
Tero Kristo | 68d4778 | 2008-11-26 12:26:24 +0200 | [diff] [blame] | 546 | struct dentry *d; |
Peter 'p2' De Schrijver | 331b93f | 2008-10-15 18:13:48 +0300 | [diff] [blame] | 547 | |
| 548 | t = sched_clock(); |
| 549 | |
| 550 | for (i = 0; i < 4; i++) |
| 551 | pwrdm->state_timer[i] = 0; |
| 552 | |
| 553 | pwrdm->timer = t; |
| 554 | |
Tero Kristo | 68d4778 | 2008-11-26 12:26:24 +0200 | [diff] [blame] | 555 | if (strncmp(pwrdm->name, "dpll", 4) == 0) |
| 556 | return 0; |
| 557 | |
| 558 | d = debugfs_create_dir(pwrdm->name, (struct dentry *)dir); |
| 559 | |
| 560 | (void) debugfs_create_file("suspend", S_IRUGO|S_IWUSR, d, |
| 561 | (void *)pwrdm, &pwrdm_suspend_fops); |
| 562 | |
Peter 'p2' De Schrijver | 331b93f | 2008-10-15 18:13:48 +0300 | [diff] [blame] | 563 | return 0; |
| 564 | } |
| 565 | |
Kevin Hilman | c40552b | 2009-10-06 14:25:09 -0700 | [diff] [blame] | 566 | static int option_get(void *data, u64 *val) |
| 567 | { |
| 568 | u32 *option = data; |
| 569 | |
| 570 | *val = *option; |
| 571 | |
| 572 | return 0; |
| 573 | } |
| 574 | |
| 575 | static int option_set(void *data, u64 val) |
| 576 | { |
| 577 | u32 *option = data; |
| 578 | |
Ari Kauppi | 8e2efde | 2010-03-23 09:04:59 +0200 | [diff] [blame] | 579 | if (option == &wakeup_timer_milliseconds && val >= 1000) |
| 580 | return -EINVAL; |
| 581 | |
Kevin Hilman | c40552b | 2009-10-06 14:25:09 -0700 | [diff] [blame] | 582 | *option = val; |
| 583 | |
Thara Gopinath | 6cdee91 | 2010-08-12 13:52:25 +0530 | [diff] [blame] | 584 | if (option == &enable_off_mode) { |
Kevin Hilman | 6081dc3 | 2010-12-21 21:31:55 -0700 | [diff] [blame] | 585 | if (val) |
| 586 | omap_pm_enable_off_mode(); |
| 587 | else |
| 588 | omap_pm_disable_off_mode(); |
Thara Gopinath | 6cdee91 | 2010-08-12 13:52:25 +0530 | [diff] [blame] | 589 | if (cpu_is_omap34xx()) |
| 590 | omap3_pm_off_mode_enable(val); |
| 591 | } |
Kevin Hilman | c40552b | 2009-10-06 14:25:09 -0700 | [diff] [blame] | 592 | |
| 593 | return 0; |
| 594 | } |
| 595 | |
| 596 | DEFINE_SIMPLE_ATTRIBUTE(pm_dbg_option_fops, option_get, option_set, "%llu\n"); |
| 597 | |
Peter 'p2' De Schrijver | 331b93f | 2008-10-15 18:13:48 +0300 | [diff] [blame] | 598 | static int __init pm_dbg_init(void) |
| 599 | { |
Tero Kristo | 2811d6b | 2008-10-29 13:31:24 +0200 | [diff] [blame] | 600 | int i; |
Peter 'p2' De Schrijver | 331b93f | 2008-10-15 18:13:48 +0300 | [diff] [blame] | 601 | struct dentry *d; |
Tero Kristo | 2811d6b | 2008-10-29 13:31:24 +0200 | [diff] [blame] | 602 | char name[2]; |
Peter 'p2' De Schrijver | 331b93f | 2008-10-15 18:13:48 +0300 | [diff] [blame] | 603 | |
Tero Kristo | 2811d6b | 2008-10-29 13:31:24 +0200 | [diff] [blame] | 604 | if (pm_dbg_init_done) |
| 605 | return 0; |
| 606 | |
| 607 | if (cpu_is_omap34xx()) |
| 608 | pm_dbg_reg_modules = omap3_pm_reg_modules; |
| 609 | else { |
| 610 | printk(KERN_ERR "%s: only OMAP3 supported\n", __func__); |
| 611 | return -ENODEV; |
| 612 | } |
Artem Bityutskiy | ee894b1 | 2009-10-01 10:01:55 +0300 | [diff] [blame] | 613 | |
Peter 'p2' De Schrijver | 331b93f | 2008-10-15 18:13:48 +0300 | [diff] [blame] | 614 | d = debugfs_create_dir("pm_debug", NULL); |
| 615 | if (IS_ERR(d)) |
| 616 | return PTR_ERR(d); |
| 617 | |
| 618 | (void) debugfs_create_file("count", S_IRUGO, |
| 619 | d, (void *)DEBUG_FILE_COUNTERS, &debug_fops); |
| 620 | (void) debugfs_create_file("time", S_IRUGO, |
| 621 | d, (void *)DEBUG_FILE_TIMERS, &debug_fops); |
| 622 | |
Paul Walmsley | e909d62a8 | 2010-01-26 20:13:00 -0700 | [diff] [blame] | 623 | pwrdm_for_each(pwrdms_setup, (void *)d); |
Peter 'p2' De Schrijver | 331b93f | 2008-10-15 18:13:48 +0300 | [diff] [blame] | 624 | |
Tero Kristo | 2811d6b | 2008-10-29 13:31:24 +0200 | [diff] [blame] | 625 | pm_dbg_dir = debugfs_create_dir("registers", d); |
| 626 | if (IS_ERR(pm_dbg_dir)) |
| 627 | return PTR_ERR(pm_dbg_dir); |
| 628 | |
| 629 | (void) debugfs_create_file("current", S_IRUGO, |
| 630 | pm_dbg_dir, (void *)0, &debug_reg_fops); |
| 631 | |
| 632 | for (i = 0; i < PM_DBG_MAX_REG_SETS; i++) |
| 633 | if (pm_dbg_reg_set[i] != NULL) { |
| 634 | sprintf(name, "%d", i+1); |
| 635 | (void) debugfs_create_file(name, S_IRUGO, |
| 636 | pm_dbg_dir, (void *)(i+1), &debug_reg_fops); |
| 637 | |
| 638 | } |
| 639 | |
Kevin Hilman | c40552b | 2009-10-06 14:25:09 -0700 | [diff] [blame] | 640 | (void) debugfs_create_file("enable_off_mode", S_IRUGO | S_IWUGO, d, |
| 641 | &enable_off_mode, &pm_dbg_option_fops); |
| 642 | (void) debugfs_create_file("sleep_while_idle", S_IRUGO | S_IWUGO, d, |
| 643 | &sleep_while_idle, &pm_dbg_option_fops); |
Kevin Hilman | d7814e4 | 2009-10-06 14:30:23 -0700 | [diff] [blame] | 644 | (void) debugfs_create_file("wakeup_timer_seconds", S_IRUGO | S_IWUGO, d, |
| 645 | &wakeup_timer_seconds, &pm_dbg_option_fops); |
Santosh Shilimkar | 315e255 | 2010-09-15 01:04:00 +0530 | [diff] [blame] | 646 | (void) debugfs_create_file("wakeup_timer_milliseconds", |
| 647 | S_IRUGO | S_IWUGO, d, &wakeup_timer_milliseconds, |
| 648 | &pm_dbg_option_fops); |
Peter 'p2' De Schrijver | 331b93f | 2008-10-15 18:13:48 +0300 | [diff] [blame] | 649 | pm_dbg_init_done = 1; |
| 650 | |
| 651 | return 0; |
| 652 | } |
Tero Kristo | 2811d6b | 2008-10-29 13:31:24 +0200 | [diff] [blame] | 653 | arch_initcall(pm_dbg_init); |
Peter 'p2' De Schrijver | 331b93f | 2008-10-15 18:13:48 +0300 | [diff] [blame] | 654 | |
Peter 'p2' De Schrijver | 331b93f | 2008-10-15 18:13:48 +0300 | [diff] [blame] | 655 | #endif |