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Diffstat (limited to 'arch/arm/mach-omap2/clockdomain.c')
-rw-r--r--arch/arm/mach-omap2/clockdomain.c91
1 files changed, 51 insertions, 40 deletions
diff --git a/arch/arm/mach-omap2/clockdomain.c b/arch/arm/mach-omap2/clockdomain.c
index 8664f5a8bfb6..cbb879139c51 100644
--- a/arch/arm/mach-omap2/clockdomain.c
+++ b/arch/arm/mach-omap2/clockdomain.c
@@ -174,9 +174,8 @@ void _clkdm_add_autodeps(struct clockdomain *clkdm)
174 if (IS_ERR(autodep->clkdm.ptr)) 174 if (IS_ERR(autodep->clkdm.ptr))
175 continue; 175 continue;
176 176
177 pr_debug("clockdomain: adding %s sleepdep/wkdep for " 177 pr_debug("clockdomain: %s: adding %s sleepdep/wkdep\n",
178 "clkdm %s\n", autodep->clkdm.ptr->name, 178 clkdm->name, autodep->clkdm.ptr->name);
179 clkdm->name);
180 179
181 clkdm_add_sleepdep(clkdm, autodep->clkdm.ptr); 180 clkdm_add_sleepdep(clkdm, autodep->clkdm.ptr);
182 clkdm_add_wkdep(clkdm, autodep->clkdm.ptr); 181 clkdm_add_wkdep(clkdm, autodep->clkdm.ptr);
@@ -205,9 +204,8 @@ void _clkdm_del_autodeps(struct clockdomain *clkdm)
205 if (IS_ERR(autodep->clkdm.ptr)) 204 if (IS_ERR(autodep->clkdm.ptr))
206 continue; 205 continue;
207 206
208 pr_debug("clockdomain: removing %s sleepdep/wkdep for " 207 pr_debug("clockdomain: %s: removing %s sleepdep/wkdep\n",
209 "clkdm %s\n", autodep->clkdm.ptr->name, 208 clkdm->name, autodep->clkdm.ptr->name);
210 clkdm->name);
211 209
212 clkdm_del_sleepdep(clkdm, autodep->clkdm.ptr); 210 clkdm_del_sleepdep(clkdm, autodep->clkdm.ptr);
213 clkdm_del_wkdep(clkdm, autodep->clkdm.ptr); 211 clkdm_del_wkdep(clkdm, autodep->clkdm.ptr);
@@ -469,14 +467,14 @@ int clkdm_add_wkdep(struct clockdomain *clkdm1, struct clockdomain *clkdm2)
469 ret = -EINVAL; 467 ret = -EINVAL;
470 468
471 if (ret) { 469 if (ret) {
472 pr_debug("clockdomain: hardware cannot set/clear wake up of " 470 pr_debug("clockdomain: hardware cannot set/clear wake up of %s when %s wakes up\n",
473 "%s when %s wakes up\n", clkdm1->name, clkdm2->name); 471 clkdm1->name, clkdm2->name);
474 return ret; 472 return ret;
475 } 473 }
476 474
477 if (atomic_inc_return(&cd->wkdep_usecount) == 1) { 475 if (atomic_inc_return(&cd->wkdep_usecount) == 1) {
478 pr_debug("clockdomain: hardware will wake up %s when %s wakes " 476 pr_debug("clockdomain: hardware will wake up %s when %s wakes up\n",
479 "up\n", clkdm1->name, clkdm2->name); 477 clkdm1->name, clkdm2->name);
480 478
481 ret = arch_clkdm->clkdm_add_wkdep(clkdm1, clkdm2); 479 ret = arch_clkdm->clkdm_add_wkdep(clkdm1, clkdm2);
482 } 480 }
@@ -510,14 +508,14 @@ int clkdm_del_wkdep(struct clockdomain *clkdm1, struct clockdomain *clkdm2)
510 ret = -EINVAL; 508 ret = -EINVAL;
511 509
512 if (ret) { 510 if (ret) {
513 pr_debug("clockdomain: hardware cannot set/clear wake up of " 511 pr_debug("clockdomain: hardware cannot set/clear wake up of %s when %s wakes up\n",
514 "%s when %s wakes up\n", clkdm1->name, clkdm2->name); 512 clkdm1->name, clkdm2->name);
515 return ret; 513 return ret;
516 } 514 }
517 515
518 if (atomic_dec_return(&cd->wkdep_usecount) == 0) { 516 if (atomic_dec_return(&cd->wkdep_usecount) == 0) {
519 pr_debug("clockdomain: hardware will no longer wake up %s " 517 pr_debug("clockdomain: hardware will no longer wake up %s after %s wakes up\n",
520 "after %s wakes up\n", clkdm1->name, clkdm2->name); 518 clkdm1->name, clkdm2->name);
521 519
522 ret = arch_clkdm->clkdm_del_wkdep(clkdm1, clkdm2); 520 ret = arch_clkdm->clkdm_del_wkdep(clkdm1, clkdm2);
523 } 521 }
@@ -555,8 +553,8 @@ int clkdm_read_wkdep(struct clockdomain *clkdm1, struct clockdomain *clkdm2)
555 ret = -EINVAL; 553 ret = -EINVAL;
556 554
557 if (ret) { 555 if (ret) {
558 pr_debug("clockdomain: hardware cannot set/clear wake up of " 556 pr_debug("clockdomain: hardware cannot set/clear wake up of %s when %s wakes up\n",
559 "%s when %s wakes up\n", clkdm1->name, clkdm2->name); 557 clkdm1->name, clkdm2->name);
560 return ret; 558 return ret;
561 } 559 }
562 560
@@ -613,15 +611,14 @@ int clkdm_add_sleepdep(struct clockdomain *clkdm1, struct clockdomain *clkdm2)
613 ret = -EINVAL; 611 ret = -EINVAL;
614 612
615 if (ret) { 613 if (ret) {
616 pr_debug("clockdomain: hardware cannot set/clear sleep " 614 pr_debug("clockdomain: hardware cannot set/clear sleep dependency affecting %s from %s\n",
617 "dependency affecting %s from %s\n", clkdm1->name, 615 clkdm1->name, clkdm2->name);
618 clkdm2->name);
619 return ret; 616 return ret;
620 } 617 }
621 618
622 if (atomic_inc_return(&cd->sleepdep_usecount) == 1) { 619 if (atomic_inc_return(&cd->sleepdep_usecount) == 1) {
623 pr_debug("clockdomain: will prevent %s from sleeping if %s " 620 pr_debug("clockdomain: will prevent %s from sleeping if %s is active\n",
624 "is active\n", clkdm1->name, clkdm2->name); 621 clkdm1->name, clkdm2->name);
625 622
626 ret = arch_clkdm->clkdm_add_sleepdep(clkdm1, clkdm2); 623 ret = arch_clkdm->clkdm_add_sleepdep(clkdm1, clkdm2);
627 } 624 }
@@ -657,16 +654,14 @@ int clkdm_del_sleepdep(struct clockdomain *clkdm1, struct clockdomain *clkdm2)
657 ret = -EINVAL; 654 ret = -EINVAL;
658 655
659 if (ret) { 656 if (ret) {
660 pr_debug("clockdomain: hardware cannot set/clear sleep " 657 pr_debug("clockdomain: hardware cannot set/clear sleep dependency affecting %s from %s\n",
661 "dependency affecting %s from %s\n", clkdm1->name, 658 clkdm1->name, clkdm2->name);
662 clkdm2->name);
663 return ret; 659 return ret;
664 } 660 }
665 661
666 if (atomic_dec_return(&cd->sleepdep_usecount) == 0) { 662 if (atomic_dec_return(&cd->sleepdep_usecount) == 0) {
667 pr_debug("clockdomain: will no longer prevent %s from " 663 pr_debug("clockdomain: will no longer prevent %s from sleeping if %s is active\n",
668 "sleeping if %s is active\n", clkdm1->name, 664 clkdm1->name, clkdm2->name);
669 clkdm2->name);
670 665
671 ret = arch_clkdm->clkdm_del_sleepdep(clkdm1, clkdm2); 666 ret = arch_clkdm->clkdm_del_sleepdep(clkdm1, clkdm2);
672 } 667 }
@@ -706,9 +701,8 @@ int clkdm_read_sleepdep(struct clockdomain *clkdm1, struct clockdomain *clkdm2)
706 ret = -EINVAL; 701 ret = -EINVAL;
707 702
708 if (ret) { 703 if (ret) {
709 pr_debug("clockdomain: hardware cannot set/clear sleep " 704 pr_debug("clockdomain: hardware cannot set/clear sleep dependency affecting %s from %s\n",
710 "dependency affecting %s from %s\n", clkdm1->name, 705 clkdm1->name, clkdm2->name);
711 clkdm2->name);
712 return ret; 706 return ret;
713 } 707 }
714 708
@@ -755,8 +749,8 @@ int clkdm_sleep(struct clockdomain *clkdm)
755 return -EINVAL; 749 return -EINVAL;
756 750
757 if (!(clkdm->flags & CLKDM_CAN_FORCE_SLEEP)) { 751 if (!(clkdm->flags & CLKDM_CAN_FORCE_SLEEP)) {
758 pr_debug("clockdomain: %s does not support forcing " 752 pr_debug("clockdomain: %s does not support forcing sleep via software\n",
759 "sleep via software\n", clkdm->name); 753 clkdm->name);
760 return -EINVAL; 754 return -EINVAL;
761 } 755 }
762 756
@@ -790,8 +784,8 @@ int clkdm_wakeup(struct clockdomain *clkdm)
790 return -EINVAL; 784 return -EINVAL;
791 785
792 if (!(clkdm->flags & CLKDM_CAN_FORCE_WAKEUP)) { 786 if (!(clkdm->flags & CLKDM_CAN_FORCE_WAKEUP)) {
793 pr_debug("clockdomain: %s does not support forcing " 787 pr_debug("clockdomain: %s does not support forcing wakeup via software\n",
794 "wakeup via software\n", clkdm->name); 788 clkdm->name);
795 return -EINVAL; 789 return -EINVAL;
796 } 790 }
797 791
@@ -826,8 +820,8 @@ void clkdm_allow_idle(struct clockdomain *clkdm)
826 return; 820 return;
827 821
828 if (!(clkdm->flags & CLKDM_CAN_ENABLE_AUTO)) { 822 if (!(clkdm->flags & CLKDM_CAN_ENABLE_AUTO)) {
829 pr_debug("clock: automatic idle transitions cannot be enabled " 823 pr_debug("clock: %s: automatic idle transitions cannot be enabled\n",
830 "on clockdomain %s\n", clkdm->name); 824 clkdm->name);
831 return; 825 return;
832 } 826 }
833 827
@@ -861,8 +855,8 @@ void clkdm_deny_idle(struct clockdomain *clkdm)
861 return; 855 return;
862 856
863 if (!(clkdm->flags & CLKDM_CAN_DISABLE_AUTO)) { 857 if (!(clkdm->flags & CLKDM_CAN_DISABLE_AUTO)) {
864 pr_debug("clockdomain: automatic idle transitions cannot be " 858 pr_debug("clockdomain: %s: automatic idle transitions cannot be disabled\n",
865 "disabled on %s\n", clkdm->name); 859 clkdm->name);
866 return; 860 return;
867 } 861 }
868 862
@@ -905,6 +899,23 @@ bool clkdm_in_hwsup(struct clockdomain *clkdm)
905 return ret; 899 return ret;
906} 900}
907 901
902/**
903 * clkdm_missing_idle_reporting - can @clkdm enter autoidle even if in use?
904 * @clkdm: struct clockdomain *
905 *
906 * Returns true if clockdomain @clkdm has the
907 * CLKDM_MISSING_IDLE_REPORTING flag set, or false if not or @clkdm is
908 * null. More information is available in the documentation for the
909 * CLKDM_MISSING_IDLE_REPORTING macro.
910 */
911bool clkdm_missing_idle_reporting(struct clockdomain *clkdm)
912{
913 if (!clkdm)
914 return false;
915
916 return (clkdm->flags & CLKDM_MISSING_IDLE_REPORTING) ? true : false;
917}
918
908/* Clockdomain-to-clock/hwmod framework interface code */ 919/* Clockdomain-to-clock/hwmod framework interface code */
909 920
910static int _clkdm_clk_hwmod_enable(struct clockdomain *clkdm) 921static int _clkdm_clk_hwmod_enable(struct clockdomain *clkdm)
@@ -927,7 +938,7 @@ static int _clkdm_clk_hwmod_enable(struct clockdomain *clkdm)
927 pwrdm_state_switch(clkdm->pwrdm.ptr); 938 pwrdm_state_switch(clkdm->pwrdm.ptr);
928 spin_unlock_irqrestore(&clkdm->lock, flags); 939 spin_unlock_irqrestore(&clkdm->lock, flags);
929 940
930 pr_debug("clockdomain: clkdm %s: enabled\n", clkdm->name); 941 pr_debug("clockdomain: %s: enabled\n", clkdm->name);
931 942
932 return 0; 943 return 0;
933} 944}
@@ -952,7 +963,7 @@ static int _clkdm_clk_hwmod_disable(struct clockdomain *clkdm)
952 pwrdm_state_switch(clkdm->pwrdm.ptr); 963 pwrdm_state_switch(clkdm->pwrdm.ptr);
953 spin_unlock_irqrestore(&clkdm->lock, flags); 964 spin_unlock_irqrestore(&clkdm->lock, flags);
954 965
955 pr_debug("clockdomain: clkdm %s: disabled\n", clkdm->name); 966 pr_debug("clockdomain: %s: disabled\n", clkdm->name);
956 967
957 return 0; 968 return 0;
958} 969}