Merge git://git.kernel.org/pub/scm/linux/kernel/git/mason/btrfs-unstable

[pandora-kernel.git] / arch / arm / mach-omap2 / clockdomain.c

diff --git a/arch/arm/mach-omap2/clockdomain.c b/arch/arm/mach-omap2/clockdomain.c
index 4c3ce9c..0e7d501 100644 (file)
--- 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;
 }