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8bd22949 KH |
1 | /* |
2 | * OMAP3 Power Management Routines | |
3 | * | |
4 | * Copyright (C) 2006-2008 Nokia Corporation | |
5 | * Tony Lindgren <tony@atomide.com> | |
6 | * Jouni Hogander | |
7 | * | |
8 | * Copyright (C) 2005 Texas Instruments, Inc. | |
9 | * Richard Woodruff <r-woodruff2@ti.com> | |
10 | * | |
11 | * Based on pm.c for omap1 | |
12 | * | |
13 | * This program is free software; you can redistribute it and/or modify | |
14 | * it under the terms of the GNU General Public License version 2 as | |
15 | * published by the Free Software Foundation. | |
16 | */ | |
17 | ||
18 | #include <linux/pm.h> | |
19 | #include <linux/suspend.h> | |
20 | #include <linux/interrupt.h> | |
21 | #include <linux/module.h> | |
22 | #include <linux/list.h> | |
23 | #include <linux/err.h> | |
24 | #include <linux/gpio.h> | |
25 | ||
26 | #include <mach/sram.h> | |
27 | #include <mach/clockdomain.h> | |
28 | #include <mach/powerdomain.h> | |
29 | #include <mach/control.h> | |
4af4016c | 30 | #include <mach/serial.h> |
8bd22949 KH |
31 | |
32 | #include "cm.h" | |
33 | #include "cm-regbits-34xx.h" | |
34 | #include "prm-regbits-34xx.h" | |
35 | ||
36 | #include "prm.h" | |
37 | #include "pm.h" | |
38 | ||
39 | struct power_state { | |
40 | struct powerdomain *pwrdm; | |
41 | u32 next_state; | |
42 | u32 saved_state; | |
43 | struct list_head node; | |
44 | }; | |
45 | ||
46 | static LIST_HEAD(pwrst_list); | |
47 | ||
48 | static void (*_omap_sram_idle)(u32 *addr, int save_state); | |
49 | ||
50 | static struct powerdomain *mpu_pwrdm; | |
51 | ||
52 | /* PRCM Interrupt Handler for wakeups */ | |
53 | static irqreturn_t prcm_interrupt_handler (int irq, void *dev_id) | |
54 | { | |
55 | u32 wkst, irqstatus_mpu; | |
56 | u32 fclk, iclk; | |
57 | ||
58 | /* WKUP */ | |
59 | wkst = prm_read_mod_reg(WKUP_MOD, PM_WKST); | |
60 | if (wkst) { | |
61 | iclk = cm_read_mod_reg(WKUP_MOD, CM_ICLKEN); | |
62 | fclk = cm_read_mod_reg(WKUP_MOD, CM_FCLKEN); | |
63 | cm_set_mod_reg_bits(wkst, WKUP_MOD, CM_ICLKEN); | |
64 | cm_set_mod_reg_bits(wkst, WKUP_MOD, CM_FCLKEN); | |
65 | prm_write_mod_reg(wkst, WKUP_MOD, PM_WKST); | |
66 | while (prm_read_mod_reg(WKUP_MOD, PM_WKST)) | |
67 | cpu_relax(); | |
68 | cm_write_mod_reg(iclk, WKUP_MOD, CM_ICLKEN); | |
69 | cm_write_mod_reg(fclk, WKUP_MOD, CM_FCLKEN); | |
70 | } | |
71 | ||
72 | /* CORE */ | |
73 | wkst = prm_read_mod_reg(CORE_MOD, PM_WKST1); | |
74 | if (wkst) { | |
75 | iclk = cm_read_mod_reg(CORE_MOD, CM_ICLKEN1); | |
76 | fclk = cm_read_mod_reg(CORE_MOD, CM_FCLKEN1); | |
77 | cm_set_mod_reg_bits(wkst, CORE_MOD, CM_ICLKEN1); | |
78 | cm_set_mod_reg_bits(wkst, CORE_MOD, CM_FCLKEN1); | |
79 | prm_write_mod_reg(wkst, CORE_MOD, PM_WKST1); | |
80 | while (prm_read_mod_reg(CORE_MOD, PM_WKST1)) | |
81 | cpu_relax(); | |
82 | cm_write_mod_reg(iclk, CORE_MOD, CM_ICLKEN1); | |
83 | cm_write_mod_reg(fclk, CORE_MOD, CM_FCLKEN1); | |
84 | } | |
85 | wkst = prm_read_mod_reg(CORE_MOD, OMAP3430ES2_PM_WKST3); | |
86 | if (wkst) { | |
87 | iclk = cm_read_mod_reg(CORE_MOD, CM_ICLKEN3); | |
88 | fclk = cm_read_mod_reg(CORE_MOD, OMAP3430ES2_CM_FCLKEN3); | |
89 | cm_set_mod_reg_bits(wkst, CORE_MOD, CM_ICLKEN3); | |
90 | cm_set_mod_reg_bits(wkst, CORE_MOD, OMAP3430ES2_CM_FCLKEN3); | |
91 | prm_write_mod_reg(wkst, CORE_MOD, OMAP3430ES2_PM_WKST3); | |
92 | while (prm_read_mod_reg(CORE_MOD, OMAP3430ES2_PM_WKST3)) | |
93 | cpu_relax(); | |
94 | cm_write_mod_reg(iclk, CORE_MOD, CM_ICLKEN3); | |
95 | cm_write_mod_reg(fclk, CORE_MOD, OMAP3430ES2_CM_FCLKEN3); | |
96 | } | |
97 | ||
98 | /* PER */ | |
99 | wkst = prm_read_mod_reg(OMAP3430_PER_MOD, PM_WKST); | |
100 | if (wkst) { | |
101 | iclk = cm_read_mod_reg(OMAP3430_PER_MOD, CM_ICLKEN); | |
102 | fclk = cm_read_mod_reg(OMAP3430_PER_MOD, CM_FCLKEN); | |
103 | cm_set_mod_reg_bits(wkst, OMAP3430_PER_MOD, CM_ICLKEN); | |
104 | cm_set_mod_reg_bits(wkst, OMAP3430_PER_MOD, CM_FCLKEN); | |
105 | prm_write_mod_reg(wkst, OMAP3430_PER_MOD, PM_WKST); | |
106 | while (prm_read_mod_reg(OMAP3430_PER_MOD, PM_WKST)) | |
107 | cpu_relax(); | |
108 | cm_write_mod_reg(iclk, OMAP3430_PER_MOD, CM_ICLKEN); | |
109 | cm_write_mod_reg(fclk, OMAP3430_PER_MOD, CM_FCLKEN); | |
110 | } | |
111 | ||
112 | if (omap_rev() > OMAP3430_REV_ES1_0) { | |
113 | /* USBHOST */ | |
114 | wkst = prm_read_mod_reg(OMAP3430ES2_USBHOST_MOD, PM_WKST); | |
115 | if (wkst) { | |
116 | iclk = cm_read_mod_reg(OMAP3430ES2_USBHOST_MOD, | |
117 | CM_ICLKEN); | |
118 | fclk = cm_read_mod_reg(OMAP3430ES2_USBHOST_MOD, | |
119 | CM_FCLKEN); | |
120 | cm_set_mod_reg_bits(wkst, OMAP3430ES2_USBHOST_MOD, | |
121 | CM_ICLKEN); | |
122 | cm_set_mod_reg_bits(wkst, OMAP3430ES2_USBHOST_MOD, | |
123 | CM_FCLKEN); | |
124 | prm_write_mod_reg(wkst, OMAP3430ES2_USBHOST_MOD, | |
125 | PM_WKST); | |
126 | while (prm_read_mod_reg(OMAP3430ES2_USBHOST_MOD, | |
127 | PM_WKST)) | |
128 | cpu_relax(); | |
129 | cm_write_mod_reg(iclk, OMAP3430ES2_USBHOST_MOD, | |
130 | CM_ICLKEN); | |
131 | cm_write_mod_reg(fclk, OMAP3430ES2_USBHOST_MOD, | |
132 | CM_FCLKEN); | |
133 | } | |
134 | } | |
135 | ||
136 | irqstatus_mpu = prm_read_mod_reg(OCP_MOD, | |
137 | OMAP3_PRM_IRQSTATUS_MPU_OFFSET); | |
138 | prm_write_mod_reg(irqstatus_mpu, OCP_MOD, | |
139 | OMAP3_PRM_IRQSTATUS_MPU_OFFSET); | |
140 | ||
141 | while (prm_read_mod_reg(OCP_MOD, OMAP3_PRM_IRQSTATUS_MPU_OFFSET)) | |
142 | cpu_relax(); | |
143 | ||
144 | return IRQ_HANDLED; | |
145 | } | |
146 | ||
147 | static void omap_sram_idle(void) | |
148 | { | |
149 | /* Variable to tell what needs to be saved and restored | |
150 | * in omap_sram_idle*/ | |
151 | /* save_state = 0 => Nothing to save and restored */ | |
152 | /* save_state = 1 => Only L1 and logic lost */ | |
153 | /* save_state = 2 => Only L2 lost */ | |
154 | /* save_state = 3 => L1, L2 and logic lost */ | |
155 | int save_state = 0, mpu_next_state; | |
156 | ||
157 | if (!_omap_sram_idle) | |
158 | return; | |
159 | ||
160 | mpu_next_state = pwrdm_read_next_pwrst(mpu_pwrdm); | |
161 | switch (mpu_next_state) { | |
162 | case PWRDM_POWER_RET: | |
163 | /* No need to save context */ | |
164 | save_state = 0; | |
165 | break; | |
166 | default: | |
167 | /* Invalid state */ | |
168 | printk(KERN_ERR "Invalid mpu state in sram_idle\n"); | |
169 | return; | |
170 | } | |
171 | omap2_gpio_prepare_for_retention(); | |
4af4016c KH |
172 | omap_uart_prepare_idle(0); |
173 | omap_uart_prepare_idle(1); | |
174 | omap_uart_prepare_idle(2); | |
8bd22949 KH |
175 | |
176 | _omap_sram_idle(NULL, save_state); | |
177 | cpu_init(); | |
178 | ||
4af4016c KH |
179 | omap_uart_resume_idle(2); |
180 | omap_uart_resume_idle(1); | |
181 | omap_uart_resume_idle(0); | |
8bd22949 KH |
182 | omap2_gpio_resume_after_retention(); |
183 | } | |
184 | ||
185 | /* | |
186 | * Check if functional clocks are enabled before entering | |
187 | * sleep. This function could be behind CONFIG_PM_DEBUG | |
188 | * when all drivers are configuring their sysconfig registers | |
189 | * properly and using their clocks properly. | |
190 | */ | |
191 | static int omap3_fclks_active(void) | |
192 | { | |
193 | u32 fck_core1 = 0, fck_core3 = 0, fck_sgx = 0, fck_dss = 0, | |
194 | fck_cam = 0, fck_per = 0, fck_usbhost = 0; | |
195 | ||
196 | fck_core1 = cm_read_mod_reg(CORE_MOD, | |
197 | CM_FCLKEN1); | |
198 | if (omap_rev() > OMAP3430_REV_ES1_0) { | |
199 | fck_core3 = cm_read_mod_reg(CORE_MOD, | |
200 | OMAP3430ES2_CM_FCLKEN3); | |
201 | fck_sgx = cm_read_mod_reg(OMAP3430ES2_SGX_MOD, | |
202 | CM_FCLKEN); | |
203 | fck_usbhost = cm_read_mod_reg(OMAP3430ES2_USBHOST_MOD, | |
204 | CM_FCLKEN); | |
205 | } else | |
206 | fck_sgx = cm_read_mod_reg(GFX_MOD, | |
207 | OMAP3430ES2_CM_FCLKEN3); | |
208 | fck_dss = cm_read_mod_reg(OMAP3430_DSS_MOD, | |
209 | CM_FCLKEN); | |
210 | fck_cam = cm_read_mod_reg(OMAP3430_CAM_MOD, | |
211 | CM_FCLKEN); | |
212 | fck_per = cm_read_mod_reg(OMAP3430_PER_MOD, | |
213 | CM_FCLKEN); | |
4af4016c KH |
214 | |
215 | /* Ignore UART clocks. These are handled by UART core (serial.c) */ | |
216 | fck_core1 &= ~(OMAP3430_EN_UART1 | OMAP3430_EN_UART2); | |
217 | fck_per &= ~OMAP3430_EN_UART3; | |
218 | ||
8bd22949 KH |
219 | if (fck_core1 | fck_core3 | fck_sgx | fck_dss | |
220 | fck_cam | fck_per | fck_usbhost) | |
221 | return 1; | |
222 | return 0; | |
223 | } | |
224 | ||
225 | static int omap3_can_sleep(void) | |
226 | { | |
4af4016c KH |
227 | if (!omap_uart_can_sleep()) |
228 | return 0; | |
8bd22949 KH |
229 | if (omap3_fclks_active()) |
230 | return 0; | |
231 | return 1; | |
232 | } | |
233 | ||
234 | /* This sets pwrdm state (other than mpu & core. Currently only ON & | |
235 | * RET are supported. Function is assuming that clkdm doesn't have | |
236 | * hw_sup mode enabled. */ | |
237 | static int set_pwrdm_state(struct powerdomain *pwrdm, u32 state) | |
238 | { | |
239 | u32 cur_state; | |
240 | int sleep_switch = 0; | |
241 | int ret = 0; | |
242 | ||
243 | if (pwrdm == NULL || IS_ERR(pwrdm)) | |
244 | return -EINVAL; | |
245 | ||
246 | while (!(pwrdm->pwrsts & (1 << state))) { | |
247 | if (state == PWRDM_POWER_OFF) | |
248 | return ret; | |
249 | state--; | |
250 | } | |
251 | ||
252 | cur_state = pwrdm_read_next_pwrst(pwrdm); | |
253 | if (cur_state == state) | |
254 | return ret; | |
255 | ||
256 | if (pwrdm_read_pwrst(pwrdm) < PWRDM_POWER_ON) { | |
257 | omap2_clkdm_wakeup(pwrdm->pwrdm_clkdms[0]); | |
258 | sleep_switch = 1; | |
259 | pwrdm_wait_transition(pwrdm); | |
260 | } | |
261 | ||
262 | ret = pwrdm_set_next_pwrst(pwrdm, state); | |
263 | if (ret) { | |
264 | printk(KERN_ERR "Unable to set state of powerdomain: %s\n", | |
265 | pwrdm->name); | |
266 | goto err; | |
267 | } | |
268 | ||
269 | if (sleep_switch) { | |
270 | omap2_clkdm_allow_idle(pwrdm->pwrdm_clkdms[0]); | |
271 | pwrdm_wait_transition(pwrdm); | |
272 | } | |
273 | ||
274 | err: | |
275 | return ret; | |
276 | } | |
277 | ||
278 | static void omap3_pm_idle(void) | |
279 | { | |
280 | local_irq_disable(); | |
281 | local_fiq_disable(); | |
282 | ||
283 | if (!omap3_can_sleep()) | |
284 | goto out; | |
285 | ||
286 | if (omap_irq_pending()) | |
287 | goto out; | |
288 | ||
289 | omap_sram_idle(); | |
290 | ||
291 | out: | |
292 | local_fiq_enable(); | |
293 | local_irq_enable(); | |
294 | } | |
295 | ||
296 | static int omap3_pm_prepare(void) | |
297 | { | |
298 | disable_hlt(); | |
299 | return 0; | |
300 | } | |
301 | ||
302 | static int omap3_pm_suspend(void) | |
303 | { | |
304 | struct power_state *pwrst; | |
305 | int state, ret = 0; | |
306 | ||
307 | /* Read current next_pwrsts */ | |
308 | list_for_each_entry(pwrst, &pwrst_list, node) | |
309 | pwrst->saved_state = pwrdm_read_next_pwrst(pwrst->pwrdm); | |
310 | /* Set ones wanted by suspend */ | |
311 | list_for_each_entry(pwrst, &pwrst_list, node) { | |
312 | if (set_pwrdm_state(pwrst->pwrdm, pwrst->next_state)) | |
313 | goto restore; | |
314 | if (pwrdm_clear_all_prev_pwrst(pwrst->pwrdm)) | |
315 | goto restore; | |
316 | } | |
317 | ||
4af4016c | 318 | omap_uart_prepare_suspend(); |
8bd22949 KH |
319 | omap_sram_idle(); |
320 | ||
321 | restore: | |
322 | /* Restore next_pwrsts */ | |
323 | list_for_each_entry(pwrst, &pwrst_list, node) { | |
324 | set_pwrdm_state(pwrst->pwrdm, pwrst->saved_state); | |
325 | state = pwrdm_read_prev_pwrst(pwrst->pwrdm); | |
326 | if (state > pwrst->next_state) { | |
327 | printk(KERN_INFO "Powerdomain (%s) didn't enter " | |
328 | "target state %d\n", | |
329 | pwrst->pwrdm->name, pwrst->next_state); | |
330 | ret = -1; | |
331 | } | |
332 | } | |
333 | if (ret) | |
334 | printk(KERN_ERR "Could not enter target state in pm_suspend\n"); | |
335 | else | |
336 | printk(KERN_INFO "Successfully put all powerdomains " | |
337 | "to target state\n"); | |
338 | ||
339 | return ret; | |
340 | } | |
341 | ||
342 | static int omap3_pm_enter(suspend_state_t state) | |
343 | { | |
344 | int ret = 0; | |
345 | ||
346 | switch (state) { | |
347 | case PM_SUSPEND_STANDBY: | |
348 | case PM_SUSPEND_MEM: | |
349 | ret = omap3_pm_suspend(); | |
350 | break; | |
351 | default: | |
352 | ret = -EINVAL; | |
353 | } | |
354 | ||
355 | return ret; | |
356 | } | |
357 | ||
358 | static void omap3_pm_finish(void) | |
359 | { | |
360 | enable_hlt(); | |
361 | } | |
362 | ||
363 | static struct platform_suspend_ops omap_pm_ops = { | |
364 | .prepare = omap3_pm_prepare, | |
365 | .enter = omap3_pm_enter, | |
366 | .finish = omap3_pm_finish, | |
367 | .valid = suspend_valid_only_mem, | |
368 | }; | |
369 | ||
1155e426 KH |
370 | |
371 | /** | |
372 | * omap3_iva_idle(): ensure IVA is in idle so it can be put into | |
373 | * retention | |
374 | * | |
375 | * In cases where IVA2 is activated by bootcode, it may prevent | |
376 | * full-chip retention or off-mode because it is not idle. This | |
377 | * function forces the IVA2 into idle state so it can go | |
378 | * into retention/off and thus allow full-chip retention/off. | |
379 | * | |
380 | **/ | |
381 | static void __init omap3_iva_idle(void) | |
382 | { | |
383 | /* ensure IVA2 clock is disabled */ | |
384 | cm_write_mod_reg(0, OMAP3430_IVA2_MOD, CM_FCLKEN); | |
385 | ||
386 | /* if no clock activity, nothing else to do */ | |
387 | if (!(cm_read_mod_reg(OMAP3430_IVA2_MOD, OMAP3430_CM_CLKSTST) & | |
388 | OMAP3430_CLKACTIVITY_IVA2_MASK)) | |
389 | return; | |
390 | ||
391 | /* Reset IVA2 */ | |
392 | prm_write_mod_reg(OMAP3430_RST1_IVA2 | | |
393 | OMAP3430_RST2_IVA2 | | |
394 | OMAP3430_RST3_IVA2, | |
395 | OMAP3430_IVA2_MOD, RM_RSTCTRL); | |
396 | ||
397 | /* Enable IVA2 clock */ | |
398 | cm_write_mod_reg(OMAP3430_CM_FCLKEN_IVA2_EN_IVA2, | |
399 | OMAP3430_IVA2_MOD, CM_FCLKEN); | |
400 | ||
401 | /* Set IVA2 boot mode to 'idle' */ | |
402 | omap_ctrl_writel(OMAP3_IVA2_BOOTMOD_IDLE, | |
403 | OMAP343X_CONTROL_IVA2_BOOTMOD); | |
404 | ||
405 | /* Un-reset IVA2 */ | |
406 | prm_write_mod_reg(0, OMAP3430_IVA2_MOD, RM_RSTCTRL); | |
407 | ||
408 | /* Disable IVA2 clock */ | |
409 | cm_write_mod_reg(0, OMAP3430_IVA2_MOD, CM_FCLKEN); | |
410 | ||
411 | /* Reset IVA2 */ | |
412 | prm_write_mod_reg(OMAP3430_RST1_IVA2 | | |
413 | OMAP3430_RST2_IVA2 | | |
414 | OMAP3430_RST3_IVA2, | |
415 | OMAP3430_IVA2_MOD, RM_RSTCTRL); | |
416 | } | |
417 | ||
8111b221 | 418 | static void __init omap3_d2d_idle(void) |
8bd22949 | 419 | { |
8111b221 KH |
420 | u16 mask, padconf; |
421 | ||
422 | /* In a stand alone OMAP3430 where there is not a stacked | |
423 | * modem for the D2D Idle Ack and D2D MStandby must be pulled | |
424 | * high. S CONTROL_PADCONF_SAD2D_IDLEACK and | |
425 | * CONTROL_PADCONF_SAD2D_MSTDBY to have a pull up. */ | |
426 | mask = (1 << 4) | (1 << 3); /* pull-up, enabled */ | |
427 | padconf = omap_ctrl_readw(OMAP3_PADCONF_SAD2D_MSTANDBY); | |
428 | padconf |= mask; | |
429 | omap_ctrl_writew(padconf, OMAP3_PADCONF_SAD2D_MSTANDBY); | |
430 | ||
431 | padconf = omap_ctrl_readw(OMAP3_PADCONF_SAD2D_IDLEACK); | |
432 | padconf |= mask; | |
433 | omap_ctrl_writew(padconf, OMAP3_PADCONF_SAD2D_IDLEACK); | |
434 | ||
8bd22949 KH |
435 | /* reset modem */ |
436 | prm_write_mod_reg(OMAP3430_RM_RSTCTRL_CORE_MODEM_SW_RSTPWRON | | |
437 | OMAP3430_RM_RSTCTRL_CORE_MODEM_SW_RST, | |
438 | CORE_MOD, RM_RSTCTRL); | |
439 | prm_write_mod_reg(0, CORE_MOD, RM_RSTCTRL); | |
8111b221 | 440 | } |
8bd22949 | 441 | |
8111b221 KH |
442 | static void __init prcm_setup_regs(void) |
443 | { | |
8bd22949 KH |
444 | /* XXX Reset all wkdeps. This should be done when initializing |
445 | * powerdomains */ | |
446 | prm_write_mod_reg(0, OMAP3430_IVA2_MOD, PM_WKDEP); | |
447 | prm_write_mod_reg(0, MPU_MOD, PM_WKDEP); | |
448 | prm_write_mod_reg(0, OMAP3430_DSS_MOD, PM_WKDEP); | |
449 | prm_write_mod_reg(0, OMAP3430_NEON_MOD, PM_WKDEP); | |
450 | prm_write_mod_reg(0, OMAP3430_CAM_MOD, PM_WKDEP); | |
451 | prm_write_mod_reg(0, OMAP3430_PER_MOD, PM_WKDEP); | |
452 | if (omap_rev() > OMAP3430_REV_ES1_0) { | |
453 | prm_write_mod_reg(0, OMAP3430ES2_SGX_MOD, PM_WKDEP); | |
454 | prm_write_mod_reg(0, OMAP3430ES2_USBHOST_MOD, PM_WKDEP); | |
455 | } else | |
456 | prm_write_mod_reg(0, GFX_MOD, PM_WKDEP); | |
457 | ||
458 | /* | |
459 | * Enable interface clock autoidle for all modules. | |
460 | * Note that in the long run this should be done by clockfw | |
461 | */ | |
462 | cm_write_mod_reg( | |
8111b221 | 463 | OMAP3430_AUTO_MODEM | |
8bd22949 KH |
464 | OMAP3430ES2_AUTO_MMC3 | |
465 | OMAP3430ES2_AUTO_ICR | | |
466 | OMAP3430_AUTO_AES2 | | |
467 | OMAP3430_AUTO_SHA12 | | |
468 | OMAP3430_AUTO_DES2 | | |
469 | OMAP3430_AUTO_MMC2 | | |
470 | OMAP3430_AUTO_MMC1 | | |
471 | OMAP3430_AUTO_MSPRO | | |
472 | OMAP3430_AUTO_HDQ | | |
473 | OMAP3430_AUTO_MCSPI4 | | |
474 | OMAP3430_AUTO_MCSPI3 | | |
475 | OMAP3430_AUTO_MCSPI2 | | |
476 | OMAP3430_AUTO_MCSPI1 | | |
477 | OMAP3430_AUTO_I2C3 | | |
478 | OMAP3430_AUTO_I2C2 | | |
479 | OMAP3430_AUTO_I2C1 | | |
480 | OMAP3430_AUTO_UART2 | | |
481 | OMAP3430_AUTO_UART1 | | |
482 | OMAP3430_AUTO_GPT11 | | |
483 | OMAP3430_AUTO_GPT10 | | |
484 | OMAP3430_AUTO_MCBSP5 | | |
485 | OMAP3430_AUTO_MCBSP1 | | |
486 | OMAP3430ES1_AUTO_FAC | /* This is es1 only */ | |
487 | OMAP3430_AUTO_MAILBOXES | | |
488 | OMAP3430_AUTO_OMAPCTRL | | |
489 | OMAP3430ES1_AUTO_FSHOSTUSB | | |
490 | OMAP3430_AUTO_HSOTGUSB | | |
8111b221 | 491 | OMAP3430_AUTO_SAD2D | |
8bd22949 KH |
492 | OMAP3430_AUTO_SSI, |
493 | CORE_MOD, CM_AUTOIDLE1); | |
494 | ||
495 | cm_write_mod_reg( | |
496 | OMAP3430_AUTO_PKA | | |
497 | OMAP3430_AUTO_AES1 | | |
498 | OMAP3430_AUTO_RNG | | |
499 | OMAP3430_AUTO_SHA11 | | |
500 | OMAP3430_AUTO_DES1, | |
501 | CORE_MOD, CM_AUTOIDLE2); | |
502 | ||
503 | if (omap_rev() > OMAP3430_REV_ES1_0) { | |
504 | cm_write_mod_reg( | |
8111b221 | 505 | OMAP3430_AUTO_MAD2D | |
8bd22949 KH |
506 | OMAP3430ES2_AUTO_USBTLL, |
507 | CORE_MOD, CM_AUTOIDLE3); | |
508 | } | |
509 | ||
510 | cm_write_mod_reg( | |
511 | OMAP3430_AUTO_WDT2 | | |
512 | OMAP3430_AUTO_WDT1 | | |
513 | OMAP3430_AUTO_GPIO1 | | |
514 | OMAP3430_AUTO_32KSYNC | | |
515 | OMAP3430_AUTO_GPT12 | | |
516 | OMAP3430_AUTO_GPT1 , | |
517 | WKUP_MOD, CM_AUTOIDLE); | |
518 | ||
519 | cm_write_mod_reg( | |
520 | OMAP3430_AUTO_DSS, | |
521 | OMAP3430_DSS_MOD, | |
522 | CM_AUTOIDLE); | |
523 | ||
524 | cm_write_mod_reg( | |
525 | OMAP3430_AUTO_CAM, | |
526 | OMAP3430_CAM_MOD, | |
527 | CM_AUTOIDLE); | |
528 | ||
529 | cm_write_mod_reg( | |
530 | OMAP3430_AUTO_GPIO6 | | |
531 | OMAP3430_AUTO_GPIO5 | | |
532 | OMAP3430_AUTO_GPIO4 | | |
533 | OMAP3430_AUTO_GPIO3 | | |
534 | OMAP3430_AUTO_GPIO2 | | |
535 | OMAP3430_AUTO_WDT3 | | |
536 | OMAP3430_AUTO_UART3 | | |
537 | OMAP3430_AUTO_GPT9 | | |
538 | OMAP3430_AUTO_GPT8 | | |
539 | OMAP3430_AUTO_GPT7 | | |
540 | OMAP3430_AUTO_GPT6 | | |
541 | OMAP3430_AUTO_GPT5 | | |
542 | OMAP3430_AUTO_GPT4 | | |
543 | OMAP3430_AUTO_GPT3 | | |
544 | OMAP3430_AUTO_GPT2 | | |
545 | OMAP3430_AUTO_MCBSP4 | | |
546 | OMAP3430_AUTO_MCBSP3 | | |
547 | OMAP3430_AUTO_MCBSP2, | |
548 | OMAP3430_PER_MOD, | |
549 | CM_AUTOIDLE); | |
550 | ||
551 | if (omap_rev() > OMAP3430_REV_ES1_0) { | |
552 | cm_write_mod_reg( | |
553 | OMAP3430ES2_AUTO_USBHOST, | |
554 | OMAP3430ES2_USBHOST_MOD, | |
555 | CM_AUTOIDLE); | |
556 | } | |
557 | ||
558 | /* | |
559 | * Set all plls to autoidle. This is needed until autoidle is | |
560 | * enabled by clockfw | |
561 | */ | |
562 | cm_write_mod_reg(1 << OMAP3430_AUTO_IVA2_DPLL_SHIFT, | |
563 | OMAP3430_IVA2_MOD, CM_AUTOIDLE2); | |
564 | cm_write_mod_reg(1 << OMAP3430_AUTO_MPU_DPLL_SHIFT, | |
565 | MPU_MOD, | |
566 | CM_AUTOIDLE2); | |
567 | cm_write_mod_reg((1 << OMAP3430_AUTO_PERIPH_DPLL_SHIFT) | | |
568 | (1 << OMAP3430_AUTO_CORE_DPLL_SHIFT), | |
569 | PLL_MOD, | |
570 | CM_AUTOIDLE); | |
571 | cm_write_mod_reg(1 << OMAP3430ES2_AUTO_PERIPH2_DPLL_SHIFT, | |
572 | PLL_MOD, | |
573 | CM_AUTOIDLE2); | |
574 | ||
575 | /* | |
576 | * Enable control of expternal oscillator through | |
577 | * sys_clkreq. In the long run clock framework should | |
578 | * take care of this. | |
579 | */ | |
580 | prm_rmw_mod_reg_bits(OMAP_AUTOEXTCLKMODE_MASK, | |
581 | 1 << OMAP_AUTOEXTCLKMODE_SHIFT, | |
582 | OMAP3430_GR_MOD, | |
583 | OMAP3_PRM_CLKSRC_CTRL_OFFSET); | |
584 | ||
585 | /* setup wakup source */ | |
586 | prm_write_mod_reg(OMAP3430_EN_IO | OMAP3430_EN_GPIO1 | | |
587 | OMAP3430_EN_GPT1 | OMAP3430_EN_GPT12, | |
588 | WKUP_MOD, PM_WKEN); | |
589 | /* No need to write EN_IO, that is always enabled */ | |
590 | prm_write_mod_reg(OMAP3430_EN_GPIO1 | OMAP3430_EN_GPT1 | | |
591 | OMAP3430_EN_GPT12, | |
592 | WKUP_MOD, OMAP3430_PM_MPUGRPSEL); | |
593 | /* For some reason IO doesn't generate wakeup event even if | |
594 | * it is selected to mpu wakeup goup */ | |
595 | prm_write_mod_reg(OMAP3430_IO_EN | OMAP3430_WKUP_EN, | |
596 | OCP_MOD, OMAP3_PRM_IRQENABLE_MPU_OFFSET); | |
1155e426 | 597 | |
d3fd3290 KH |
598 | /* Don't attach IVA interrupts */ |
599 | prm_write_mod_reg(0, WKUP_MOD, OMAP3430_PM_IVAGRPSEL); | |
600 | prm_write_mod_reg(0, CORE_MOD, OMAP3430_PM_IVAGRPSEL1); | |
601 | prm_write_mod_reg(0, CORE_MOD, OMAP3430ES2_PM_IVAGRPSEL3); | |
602 | prm_write_mod_reg(0, OMAP3430_PER_MOD, OMAP3430_PM_IVAGRPSEL); | |
603 | ||
b1340d17 KH |
604 | /* Clear any pending 'reset' flags */ |
605 | prm_write_mod_reg(0xffffffff, MPU_MOD, RM_RSTST); | |
606 | prm_write_mod_reg(0xffffffff, CORE_MOD, RM_RSTST); | |
607 | prm_write_mod_reg(0xffffffff, OMAP3430_PER_MOD, RM_RSTST); | |
608 | prm_write_mod_reg(0xffffffff, OMAP3430_EMU_MOD, RM_RSTST); | |
609 | prm_write_mod_reg(0xffffffff, OMAP3430_NEON_MOD, RM_RSTST); | |
610 | prm_write_mod_reg(0xffffffff, OMAP3430_DSS_MOD, RM_RSTST); | |
611 | prm_write_mod_reg(0xffffffff, OMAP3430ES2_USBHOST_MOD, RM_RSTST); | |
612 | ||
014c46db KH |
613 | /* Clear any pending PRCM interrupts */ |
614 | prm_write_mod_reg(0, OCP_MOD, OMAP3_PRM_IRQSTATUS_MPU_OFFSET); | |
615 | ||
1155e426 | 616 | omap3_iva_idle(); |
8111b221 | 617 | omap3_d2d_idle(); |
8bd22949 KH |
618 | } |
619 | ||
620 | static int __init pwrdms_setup(struct powerdomain *pwrdm) | |
621 | { | |
622 | struct power_state *pwrst; | |
623 | ||
624 | if (!pwrdm->pwrsts) | |
625 | return 0; | |
626 | ||
627 | pwrst = kmalloc(sizeof(struct power_state), GFP_KERNEL); | |
628 | if (!pwrst) | |
629 | return -ENOMEM; | |
630 | pwrst->pwrdm = pwrdm; | |
631 | pwrst->next_state = PWRDM_POWER_RET; | |
632 | list_add(&pwrst->node, &pwrst_list); | |
633 | ||
634 | if (pwrdm_has_hdwr_sar(pwrdm)) | |
635 | pwrdm_enable_hdwr_sar(pwrdm); | |
636 | ||
637 | return set_pwrdm_state(pwrst->pwrdm, pwrst->next_state); | |
638 | } | |
639 | ||
640 | /* | |
641 | * Enable hw supervised mode for all clockdomains if it's | |
642 | * supported. Initiate sleep transition for other clockdomains, if | |
643 | * they are not used | |
644 | */ | |
645 | static int __init clkdms_setup(struct clockdomain *clkdm) | |
646 | { | |
647 | if (clkdm->flags & CLKDM_CAN_ENABLE_AUTO) | |
648 | omap2_clkdm_allow_idle(clkdm); | |
649 | else if (clkdm->flags & CLKDM_CAN_FORCE_SLEEP && | |
650 | atomic_read(&clkdm->usecount) == 0) | |
651 | omap2_clkdm_sleep(clkdm); | |
652 | return 0; | |
653 | } | |
654 | ||
655 | int __init omap3_pm_init(void) | |
656 | { | |
657 | struct power_state *pwrst, *tmp; | |
658 | int ret; | |
659 | ||
660 | if (!cpu_is_omap34xx()) | |
661 | return -ENODEV; | |
662 | ||
663 | printk(KERN_ERR "Power Management for TI OMAP3.\n"); | |
664 | ||
665 | /* XXX prcm_setup_regs needs to be before enabling hw | |
666 | * supervised mode for powerdomains */ | |
667 | prcm_setup_regs(); | |
668 | ||
669 | ret = request_irq(INT_34XX_PRCM_MPU_IRQ, | |
670 | (irq_handler_t)prcm_interrupt_handler, | |
671 | IRQF_DISABLED, "prcm", NULL); | |
672 | if (ret) { | |
673 | printk(KERN_ERR "request_irq failed to register for 0x%x\n", | |
674 | INT_34XX_PRCM_MPU_IRQ); | |
675 | goto err1; | |
676 | } | |
677 | ||
678 | ret = pwrdm_for_each(pwrdms_setup); | |
679 | if (ret) { | |
680 | printk(KERN_ERR "Failed to setup powerdomains\n"); | |
681 | goto err2; | |
682 | } | |
683 | ||
684 | (void) clkdm_for_each(clkdms_setup); | |
685 | ||
686 | mpu_pwrdm = pwrdm_lookup("mpu_pwrdm"); | |
687 | if (mpu_pwrdm == NULL) { | |
688 | printk(KERN_ERR "Failed to get mpu_pwrdm\n"); | |
689 | goto err2; | |
690 | } | |
691 | ||
692 | _omap_sram_idle = omap_sram_push(omap34xx_cpu_suspend, | |
693 | omap34xx_cpu_suspend_sz); | |
694 | ||
695 | suspend_set_ops(&omap_pm_ops); | |
696 | ||
697 | pm_idle = omap3_pm_idle; | |
698 | ||
699 | err1: | |
700 | return ret; | |
701 | err2: | |
702 | free_irq(INT_34XX_PRCM_MPU_IRQ, NULL); | |
703 | list_for_each_entry_safe(pwrst, tmp, &pwrst_list, node) { | |
704 | list_del(&pwrst->node); | |
705 | kfree(pwrst); | |
706 | } | |
707 | return ret; | |
708 | } | |
709 | ||
710 | late_initcall(omap3_pm_init); |