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Diffstat (limited to 'arch/arm/mach-omap2/clockdomain.c')
-rw-r--r--arch/arm/mach-omap2/clockdomain.c76
1 files changed, 41 insertions, 35 deletions
diff --git a/arch/arm/mach-omap2/clockdomain.c b/arch/arm/mach-omap2/clockdomain.c
index 4c3ce9cfd948..0e7d501865b6 100644
--- a/arch/arm/mach-omap2/clockdomain.c
+++ b/arch/arm/mach-omap2/clockdomain.c
@@ -22,6 +22,7 @@
#include <linux/delay.h>
#include <linux/clk.h>
#include <linux/limits.h>
+#include <linux/err.h>
#include <linux/io.h>
@@ -71,16 +72,13 @@ static void _autodep_lookup(struct clkdm_pwrdm_autodep *autodep)
if (!omap_chip_is(autodep->omap_chip))
return;
- pwrdm = pwrdm_lookup(autodep->pwrdm_name);
+ pwrdm = pwrdm_lookup(autodep->pwrdm.name);
if (!pwrdm) {
- pr_debug("clockdomain: _autodep_lookup: powerdomain %s "
- "does not exist\n", autodep->pwrdm_name);
- WARN_ON(1);
- return;
+ pr_err("clockdomain: autodeps: powerdomain %s does not exist\n",
+ autodep->pwrdm.name);
+ pwrdm = ERR_PTR(-ENOENT);
}
- autodep->pwrdm = pwrdm;
-
- return;
+ autodep->pwrdm.ptr = pwrdm;
}
/*
@@ -95,16 +93,19 @@ static void _clkdm_add_autodeps(struct clockdomain *clkdm)
{
struct clkdm_pwrdm_autodep *autodep;
- for (autodep = autodeps; autodep->pwrdm_name; autodep++) {
- if (!autodep->pwrdm)
+ for (autodep = autodeps; autodep->pwrdm.ptr; autodep++) {
+ if (IS_ERR(autodep->pwrdm.ptr))
+ continue;
+
+ if (!omap_chip_is(autodep->omap_chip))
continue;
pr_debug("clockdomain: adding %s sleepdep/wkdep for "
- "pwrdm %s\n", autodep->pwrdm_name,
- clkdm->pwrdm->name);
+ "pwrdm %s\n", autodep->pwrdm.ptr->name,
+ clkdm->pwrdm.ptr->name);
- pwrdm_add_sleepdep(clkdm->pwrdm, autodep->pwrdm);
- pwrdm_add_wkdep(clkdm->pwrdm, autodep->pwrdm);
+ pwrdm_add_sleepdep(clkdm->pwrdm.ptr, autodep->pwrdm.ptr);
+ pwrdm_add_wkdep(clkdm->pwrdm.ptr, autodep->pwrdm.ptr);
}
}
@@ -120,16 +121,19 @@ static void _clkdm_del_autodeps(struct clockdomain *clkdm)
{
struct clkdm_pwrdm_autodep *autodep;
- for (autodep = autodeps; autodep->pwrdm_name; autodep++) {
- if (!autodep->pwrdm)
+ for (autodep = autodeps; autodep->pwrdm.ptr; autodep++) {
+ if (IS_ERR(autodep->pwrdm.ptr))
+ continue;
+
+ if (!omap_chip_is(autodep->omap_chip))
continue;
pr_debug("clockdomain: removing %s sleepdep/wkdep for "
- "pwrdm %s\n", autodep->pwrdm_name,
- clkdm->pwrdm->name);
+ "pwrdm %s\n", autodep->pwrdm.ptr->name,
+ clkdm->pwrdm.ptr->name);
- pwrdm_del_sleepdep(clkdm->pwrdm, autodep->pwrdm);
- pwrdm_del_wkdep(clkdm->pwrdm, autodep->pwrdm);
+ pwrdm_del_sleepdep(clkdm->pwrdm.ptr, autodep->pwrdm.ptr);
+ pwrdm_del_wkdep(clkdm->pwrdm.ptr, autodep->pwrdm.ptr);
}
}
@@ -179,7 +183,7 @@ void clkdm_init(struct clockdomain **clkdms,
autodeps = init_autodeps;
if (autodeps)
- for (autodep = autodeps; autodep->pwrdm_name; autodep++)
+ for (autodep = autodeps; autodep->pwrdm.ptr; autodep++)
_autodep_lookup(autodep);
}
@@ -202,20 +206,20 @@ int clkdm_register(struct clockdomain *clkdm)
if (!omap_chip_is(clkdm->omap_chip))
return -EINVAL;
- pwrdm = pwrdm_lookup(clkdm->pwrdm_name);
+ pwrdm = pwrdm_lookup(clkdm->pwrdm.name);
if (!pwrdm) {
- pr_debug("clockdomain: clkdm_register %s: powerdomain %s "
- "does not exist\n", clkdm->name, clkdm->pwrdm_name);
+ pr_err("clockdomain: %s: powerdomain %s does not exist\n",
+ clkdm->name, clkdm->pwrdm.name);
return -EINVAL;
}
- clkdm->pwrdm = pwrdm;
+ clkdm->pwrdm.ptr = pwrdm;
mutex_lock(&clkdm_mutex);
/* Verify that the clockdomain is not already registered */
if (_clkdm_lookup(clkdm->name)) {
ret = -EEXIST;
goto cr_unlock;
- };
+ }
list_add(&clkdm->node, &clkdm_list);
@@ -242,7 +246,7 @@ int clkdm_unregister(struct clockdomain *clkdm)
if (!clkdm)
return -EINVAL;
- pwrdm_del_clkdm(clkdm->pwrdm, clkdm);
+ pwrdm_del_clkdm(clkdm->pwrdm.ptr, clkdm);
mutex_lock(&clkdm_mutex);
list_del(&clkdm->node);
@@ -327,7 +331,7 @@ struct powerdomain *clkdm_get_pwrdm(struct clockdomain *clkdm)
if (!clkdm)
return NULL;
- return clkdm->pwrdm;
+ return clkdm->pwrdm.ptr;
}
@@ -348,7 +352,7 @@ static int omap2_clkdm_clktrctrl_read(struct clockdomain *clkdm)
if (!clkdm)
return -EINVAL;
- v = cm_read_mod_reg(clkdm->pwrdm->prcm_offs, CM_CLKSTCTRL);
+ v = cm_read_mod_reg(clkdm->pwrdm.ptr->prcm_offs, CM_CLKSTCTRL);
v &= clkdm->clktrctrl_mask;
v >>= __ffs(clkdm->clktrctrl_mask);
@@ -380,7 +384,7 @@ int omap2_clkdm_sleep(struct clockdomain *clkdm)
if (cpu_is_omap24xx()) {
cm_set_mod_reg_bits(OMAP24XX_FORCESTATE,
- clkdm->pwrdm->prcm_offs, PM_PWSTCTRL);
+ clkdm->pwrdm.ptr->prcm_offs, PM_PWSTCTRL);
} else if (cpu_is_omap34xx()) {
@@ -388,7 +392,7 @@ int omap2_clkdm_sleep(struct clockdomain *clkdm)
__ffs(clkdm->clktrctrl_mask));
cm_rmw_mod_reg_bits(clkdm->clktrctrl_mask, v,
- clkdm->pwrdm->prcm_offs, CM_CLKSTCTRL);
+ clkdm->pwrdm.ptr->prcm_offs, CM_CLKSTCTRL);
} else {
BUG();
@@ -422,7 +426,7 @@ int omap2_clkdm_wakeup(struct clockdomain *clkdm)
if (cpu_is_omap24xx()) {
cm_clear_mod_reg_bits(OMAP24XX_FORCESTATE,
- clkdm->pwrdm->prcm_offs, PM_PWSTCTRL);
+ clkdm->pwrdm.ptr->prcm_offs, PM_PWSTCTRL);
} else if (cpu_is_omap34xx()) {
@@ -430,7 +434,7 @@ int omap2_clkdm_wakeup(struct clockdomain *clkdm)
__ffs(clkdm->clktrctrl_mask));
cm_rmw_mod_reg_bits(clkdm->clktrctrl_mask, v,
- clkdm->pwrdm->prcm_offs, CM_CLKSTCTRL);
+ clkdm->pwrdm.ptr->prcm_offs, CM_CLKSTCTRL);
} else {
BUG();
@@ -478,7 +482,7 @@ void omap2_clkdm_allow_idle(struct clockdomain *clkdm)
cm_rmw_mod_reg_bits(clkdm->clktrctrl_mask,
v << __ffs(clkdm->clktrctrl_mask),
- clkdm->pwrdm->prcm_offs,
+ clkdm->pwrdm.ptr->prcm_offs,
CM_CLKSTCTRL);
}
@@ -516,7 +520,7 @@ void omap2_clkdm_deny_idle(struct clockdomain *clkdm)
cm_rmw_mod_reg_bits(clkdm->clktrctrl_mask,
v << __ffs(clkdm->clktrctrl_mask),
- clkdm->pwrdm->prcm_offs, CM_CLKSTCTRL);
+ clkdm->pwrdm.ptr->prcm_offs, CM_CLKSTCTRL);
if (atomic_read(&clkdm->usecount) > 0)
_clkdm_del_autodeps(clkdm);
@@ -567,6 +571,8 @@ int omap2_clkdm_clk_enable(struct clockdomain *clkdm, struct clk *clk)
else
omap2_clkdm_wakeup(clkdm);
+ pwrdm_wait_transition(clkdm->pwrdm.ptr);
+
return 0;
}
Copyright © 1996 – 2023 Jason A. Donenfeld. All Rights Reverse Engineered.