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Diffstat (limited to 'arch/arm/mach-omap2/powerdomain.c')
-rw-r--r--arch/arm/mach-omap2/powerdomain.c81
1 files changed, 50 insertions, 31 deletions
diff --git a/arch/arm/mach-omap2/powerdomain.c b/arch/arm/mach-omap2/powerdomain.c
index 2594cbff394..26b3f3ee82a 100644
--- a/arch/arm/mach-omap2/powerdomain.c
+++ b/arch/arm/mach-omap2/powerdomain.c
@@ -10,9 +10,7 @@
* it under the terms of the GNU General Public License version 2 as
* published by the Free Software Foundation.
*/
-#ifdef CONFIG_OMAP_DEBUG_POWERDOMAIN
-# define DEBUG
-#endif
+#undef DEBUG
#include <linux/kernel.h>
#include <linux/module.h>
@@ -31,9 +29,9 @@
#include "prm.h"
#include "prm-regbits-34xx.h"
-#include <mach/cpu.h>
-#include <mach/powerdomain.h>
-#include <mach/clockdomain.h>
+#include <plat/cpu.h>
+#include <plat/powerdomain.h>
+#include <plat/clockdomain.h>
#include "pm.h"
@@ -160,7 +158,7 @@ static __init void _pwrdm_setup(struct powerdomain *pwrdm)
{
int i;
- for (i = 0; i < 4; i++)
+ for (i = 0; i < PWRDM_MAX_PWRSTS; i++)
pwrdm->state_counter[i] = 0;
pwrdm_wait_transition(pwrdm);
@@ -273,35 +271,50 @@ struct powerdomain *pwrdm_lookup(const char *name)
}
/**
- * pwrdm_for_each - call function on each registered clockdomain
+ * pwrdm_for_each_nolock - call function on each registered clockdomain
* @fn: callback function *
*
* Call the supplied function for each registered powerdomain. The
* callback function can return anything but 0 to bail out early from
- * the iterator. The callback function is called with the pwrdm_rwlock
- * held for reading, so no powerdomain structure manipulation
- * functions should be called from the callback, although hardware
- * powerdomain control functions are fine. Returns the last return
- * value of the callback function, which should be 0 for success or
- * anything else to indicate failure; or -EINVAL if the function
- * pointer is null.
+ * the iterator. Returns the last return value of the callback function, which
+ * should be 0 for success or anything else to indicate failure; or -EINVAL if
+ * the function pointer is null.
*/
-int pwrdm_for_each(int (*fn)(struct powerdomain *pwrdm, void *user),
- void *user)
+int pwrdm_for_each_nolock(int (*fn)(struct powerdomain *pwrdm, void *user),
+ void *user)
{
struct powerdomain *temp_pwrdm;
- unsigned long flags;
int ret = 0;
if (!fn)
return -EINVAL;
- read_lock_irqsave(&pwrdm_rwlock, flags);
list_for_each_entry(temp_pwrdm, &pwrdm_list, node) {
ret = (*fn)(temp_pwrdm, user);
if (ret)
break;
}
+
+ return ret;
+}
+
+/**
+ * pwrdm_for_each - call function on each registered clockdomain
+ * @fn: callback function *
+ *
+ * This function is the same as 'pwrdm_for_each_nolock()', but keeps the
+ * &pwrdm_rwlock locked for reading, so no powerdomain structure manipulation
+ * functions should be called from the callback, although hardware powerdomain
+ * control functions are fine.
+ */
+int pwrdm_for_each(int (*fn)(struct powerdomain *pwrdm, void *user),
+ void *user)
+{
+ unsigned long flags;
+ int ret;
+
+ read_lock_irqsave(&pwrdm_rwlock, flags);
+ ret = pwrdm_for_each_nolock(fn, user);
read_unlock_irqrestore(&pwrdm_rwlock, flags);
return ret;
@@ -465,7 +478,7 @@ int pwrdm_add_wkdep(struct powerdomain *pwrdm1, struct powerdomain *pwrdm2)
if (IS_ERR(p)) {
pr_debug("powerdomain: hardware cannot set/clear wake up of "
"%s when %s wakes up\n", pwrdm1->name, pwrdm2->name);
- return IS_ERR(p);
+ return PTR_ERR(p);
}
pr_debug("powerdomain: hardware will wake up %s when %s wakes up\n",
@@ -498,7 +511,7 @@ int pwrdm_del_wkdep(struct powerdomain *pwrdm1, struct powerdomain *pwrdm2)
if (IS_ERR(p)) {
pr_debug("powerdomain: hardware cannot set/clear wake up of "
"%s when %s wakes up\n", pwrdm1->name, pwrdm2->name);
- return IS_ERR(p);
+ return PTR_ERR(p);
}
pr_debug("powerdomain: hardware will no longer wake up %s after %s "
@@ -535,7 +548,7 @@ int pwrdm_read_wkdep(struct powerdomain *pwrdm1, struct powerdomain *pwrdm2)
if (IS_ERR(p)) {
pr_debug("powerdomain: hardware cannot set/clear wake up of "
"%s when %s wakes up\n", pwrdm1->name, pwrdm2->name);
- return IS_ERR(p);
+ return PTR_ERR(p);
}
return prm_read_mod_bits_shift(pwrdm1->prcm_offs, PM_WKDEP,
@@ -558,10 +571,10 @@ int pwrdm_add_sleepdep(struct powerdomain *pwrdm1, struct powerdomain *pwrdm2)
{
struct powerdomain *p;
- if (!pwrdm1)
+ if (!cpu_is_omap34xx())
return -EINVAL;
- if (!cpu_is_omap34xx())
+ if (!pwrdm1)
return -EINVAL;
p = _pwrdm_deps_lookup(pwrdm2, pwrdm1->sleepdep_srcs);
@@ -569,7 +582,7 @@ int pwrdm_add_sleepdep(struct powerdomain *pwrdm1, struct powerdomain *pwrdm2)
pr_debug("powerdomain: hardware cannot set/clear sleep "
"dependency affecting %s from %s\n", pwrdm1->name,
pwrdm2->name);
- return IS_ERR(p);
+ return PTR_ERR(p);
}
pr_debug("powerdomain: will prevent %s from sleeping if %s is active\n",
@@ -597,10 +610,10 @@ int pwrdm_del_sleepdep(struct powerdomain *pwrdm1, struct powerdomain *pwrdm2)
{
struct powerdomain *p;
- if (!pwrdm1)
+ if (!cpu_is_omap34xx())
return -EINVAL;
- if (!cpu_is_omap34xx())
+ if (!pwrdm1)
return -EINVAL;
p = _pwrdm_deps_lookup(pwrdm2, pwrdm1->sleepdep_srcs);
@@ -608,7 +621,7 @@ int pwrdm_del_sleepdep(struct powerdomain *pwrdm1, struct powerdomain *pwrdm2)
pr_debug("powerdomain: hardware cannot set/clear sleep "
"dependency affecting %s from %s\n", pwrdm1->name,
pwrdm2->name);
- return IS_ERR(p);
+ return PTR_ERR(p);
}
pr_debug("powerdomain: will no longer prevent %s from sleeping if "
@@ -640,10 +653,10 @@ int pwrdm_read_sleepdep(struct powerdomain *pwrdm1, struct powerdomain *pwrdm2)
{
struct powerdomain *p;
- if (!pwrdm1)
+ if (!cpu_is_omap34xx())
return -EINVAL;
- if (!cpu_is_omap34xx())
+ if (!pwrdm1)
return -EINVAL;
p = _pwrdm_deps_lookup(pwrdm2, pwrdm1->sleepdep_srcs);
@@ -651,7 +664,7 @@ int pwrdm_read_sleepdep(struct powerdomain *pwrdm1, struct powerdomain *pwrdm2)
pr_debug("powerdomain: hardware cannot set/clear sleep "
"dependency affecting %s from %s\n", pwrdm1->name,
pwrdm2->name);
- return IS_ERR(p);
+ return PTR_ERR(p);
}
return prm_read_mod_bits_shift(pwrdm1->prcm_offs, OMAP3430_CM_SLEEPDEP,
@@ -970,6 +983,9 @@ int pwrdm_read_mem_pwrst(struct powerdomain *pwrdm, u8 bank)
if (pwrdm->banks < (bank + 1))
return -EEXIST;
+ if (pwrdm->flags & PWRDM_HAS_MPU_QUIRK)
+ bank = 1;
+
/*
* The register bit names below may not correspond to the
* actual names of the bits in each powerdomain's register,
@@ -1017,6 +1033,9 @@ int pwrdm_read_prev_mem_pwrst(struct powerdomain *pwrdm, u8 bank)
if (pwrdm->banks < (bank + 1))
return -EEXIST;
+ if (pwrdm->flags & PWRDM_HAS_MPU_QUIRK)
+ bank = 1;
+
/*
* The register bit names below may not correspond to the
* actual names of the bits in each powerdomain's register,
generated by cgit v1.2.3-70-g09d2 (git 2.46.0) at 2024-12-25 23:11:44 +0000