#undef DEBUG
#include <linux/kernel.h>
-#include <linux/module.h>
#include <linux/types.h>
-#include <linux/delay.h>
-#include <linux/spinlock.h>
#include <linux/list.h>
#include <linux/errno.h>
-#include <linux/err.h>
-#include <linux/io.h>
-
-#include <asm/atomic.h>
-
-#include "cm.h"
-#include "cm-regbits-34xx.h"
-#include "cm-regbits-44xx.h"
-#include "prm.h"
-#include "prm-regbits-34xx.h"
-#include "prm-regbits-44xx.h"
+#include <linux/string.h>
+#include "cm2xxx_3xxx.h"
+#include "prcm44xx.h"
+#include "cm44xx.h"
+#include "prm2xxx_3xxx.h"
+#include "prm44xx.h"
#include <plat/cpu.h>
-#include <plat/powerdomain.h>
-#include <plat/clockdomain.h>
+#include "powerdomain.h"
+#include "clockdomain.h"
#include <plat/prcm.h>
#include "pm.h"
PWRDM_STATE_PREV,
};
-/* Variable holding value of the CPU dependent PWRSTCTRL Register Offset */
-static u16 pwrstctrl_reg_offs;
-
-/* Variable holding value of the CPU dependent PWRSTST Register Offset */
-static u16 pwrstst_reg_offs;
-
-/* OMAP3 and OMAP4 specific register bit initialisations
- * Notice that the names here are not according to each power
- * domain but the bit mapping used applies to all of them
- */
-
-/* OMAP3 and OMAP4 Memory Onstate Masks (common across all power domains) */
-#define OMAP_MEM0_ONSTATE_MASK OMAP3430_SHAREDL1CACHEFLATONSTATE_MASK
-#define OMAP_MEM1_ONSTATE_MASK OMAP3430_L1FLATMEMONSTATE_MASK
-#define OMAP_MEM2_ONSTATE_MASK OMAP3430_SHAREDL2CACHEFLATONSTATE_MASK
-#define OMAP_MEM3_ONSTATE_MASK OMAP3430_L2FLATMEMONSTATE_MASK
-#define OMAP_MEM4_ONSTATE_MASK OMAP4430_OCP_NRET_BANK_ONSTATE_MASK
-
-/* OMAP3 and OMAP4 Memory Retstate Masks (common across all power domains) */
-#define OMAP_MEM0_RETSTATE_MASK OMAP3430_SHAREDL1CACHEFLATRETSTATE_MASK
-#define OMAP_MEM1_RETSTATE_MASK OMAP3430_L1FLATMEMRETSTATE_MASK
-#define OMAP_MEM2_RETSTATE_MASK OMAP3430_SHAREDL2CACHEFLATRETSTATE_MASK
-#define OMAP_MEM3_RETSTATE_MASK OMAP3430_L2FLATMEMRETSTATE_MASK
-#define OMAP_MEM4_RETSTATE_MASK OMAP4430_OCP_NRET_BANK_RETSTATE_MASK
-
-/* OMAP3 and OMAP4 Memory Status bits */
-#define OMAP_MEM0_STATEST_MASK OMAP3430_SHAREDL1CACHEFLATSTATEST_MASK
-#define OMAP_MEM1_STATEST_MASK OMAP3430_L1FLATMEMSTATEST_MASK
-#define OMAP_MEM2_STATEST_MASK OMAP3430_SHAREDL2CACHEFLATSTATEST_MASK
-#define OMAP_MEM3_STATEST_MASK OMAP3430_L2FLATMEMSTATEST_MASK
-#define OMAP_MEM4_STATEST_MASK OMAP4430_OCP_NRET_BANK_STATEST_MASK
/* pwrdm_list contains all registered struct powerdomains */
static LIST_HEAD(pwrdm_list);
{
int i;
- if (!pwrdm)
+ if (!pwrdm || !pwrdm->name)
return -EINVAL;
if (!omap_chip_is(pwrdm->omap_chip))
return -EINVAL;
+ if (cpu_is_omap44xx() &&
+ pwrdm->prcm_partition == OMAP4430_INVALID_PRCM_PARTITION) {
+ pr_err("powerdomain: %s: missing OMAP4 PRCM partition ID\n",
+ pwrdm->name);
+ return -EINVAL;
+ }
+
if (_pwrdm_lookup(pwrdm->name))
return -EEXIST;
{
struct powerdomain **p = NULL;
- if (cpu_is_omap24xx() || cpu_is_omap34xx()) {
- pwrstctrl_reg_offs = OMAP2_PM_PWSTCTRL;
- pwrstst_reg_offs = OMAP2_PM_PWSTST;
- } else if (cpu_is_omap44xx()) {
- pwrstctrl_reg_offs = OMAP4_PM_PWSTCTRL;
- pwrstst_reg_offs = OMAP4_PM_PWSTST;
- } else {
- printk(KERN_ERR "Power Domain struct not supported for " \
- "this CPU\n");
- return;
- }
-
if (!custom_funcs)
WARN(1, "powerdomain: No custom pwrdm functions registered\n");
else
*/
int pwrdm_set_mem_onst(struct powerdomain *pwrdm, u8 bank, u8 pwrst)
{
- u32 m;
+ int ret = -EINVAL;
if (!pwrdm)
return -EINVAL;
pr_debug("powerdomain: setting next memory powerstate for domain %s "
"bank %0x while pwrdm-ON to %0x\n", pwrdm->name, bank, pwrst);
- /*
- * The register bit names below may not correspond to the
- * actual names of the bits in each powerdomain's register,
- * but the type of value returned is the same for each
- * powerdomain.
- */
- switch (bank) {
- case 0:
- m = OMAP_MEM0_ONSTATE_MASK;
- break;
- case 1:
- m = OMAP_MEM1_ONSTATE_MASK;
- break;
- case 2:
- m = OMAP_MEM2_ONSTATE_MASK;
- break;
- case 3:
- m = OMAP_MEM3_ONSTATE_MASK;
- break;
- case 4:
- m = OMAP_MEM4_ONSTATE_MASK;
- break;
- default:
- WARN_ON(1); /* should never happen */
- return -EEXIST;
- }
-
- prm_rmw_mod_reg_bits(m, (pwrst << __ffs(m)),
- pwrdm->prcm_offs, pwrstctrl_reg_offs);
+ if (arch_pwrdm && arch_pwrdm->pwrdm_set_mem_onst)
+ ret = arch_pwrdm->pwrdm_set_mem_onst(pwrdm, bank, pwrst);
- return 0;
+ return ret;
}
/**
*/
int pwrdm_set_mem_retst(struct powerdomain *pwrdm, u8 bank, u8 pwrst)
{
- u32 m;
+ int ret = -EINVAL;
if (!pwrdm)
return -EINVAL;
pr_debug("powerdomain: setting next memory powerstate for domain %s "
"bank %0x while pwrdm-RET to %0x\n", pwrdm->name, bank, pwrst);
- /*
- * The register bit names below may not correspond to the
- * actual names of the bits in each powerdomain's register,
- * but the type of value returned is the same for each
- * powerdomain.
- */
- switch (bank) {
- case 0:
- m = OMAP_MEM0_RETSTATE_MASK;
- break;
- case 1:
- m = OMAP_MEM1_RETSTATE_MASK;
- break;
- case 2:
- m = OMAP_MEM2_RETSTATE_MASK;
- break;
- case 3:
- m = OMAP_MEM3_RETSTATE_MASK;
- break;
- case 4:
- m = OMAP_MEM4_RETSTATE_MASK;
- break;
- default:
- WARN_ON(1); /* should never happen */
- return -EEXIST;
- }
-
- prm_rmw_mod_reg_bits(m, (pwrst << __ffs(m)), pwrdm->prcm_offs,
- pwrstctrl_reg_offs);
+ if (arch_pwrdm && arch_pwrdm->pwrdm_set_mem_retst)
+ ret = arch_pwrdm->pwrdm_set_mem_retst(pwrdm, bank, pwrst);
- return 0;
+ return ret;
}
/**
*/
int pwrdm_read_mem_pwrst(struct powerdomain *pwrdm, u8 bank)
{
- u32 m;
+ int ret = -EINVAL;
if (!pwrdm)
- return -EINVAL;
+ return ret;
if (pwrdm->banks < (bank + 1))
- return -EEXIST;
+ return ret;
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,
- * but the type of value returned is the same for each
- * powerdomain.
- */
- switch (bank) {
- case 0:
- m = OMAP_MEM0_STATEST_MASK;
- break;
- case 1:
- m = OMAP_MEM1_STATEST_MASK;
- break;
- case 2:
- m = OMAP_MEM2_STATEST_MASK;
- break;
- case 3:
- m = OMAP_MEM3_STATEST_MASK;
- break;
- case 4:
- m = OMAP_MEM4_STATEST_MASK;
- break;
- default:
- WARN_ON(1); /* should never happen */
- return -EEXIST;
- }
+ if (arch_pwrdm && arch_pwrdm->pwrdm_read_mem_pwrst)
+ ret = arch_pwrdm->pwrdm_read_mem_pwrst(pwrdm, bank);
- return prm_read_mod_bits_shift(pwrdm->prcm_offs,
- pwrstst_reg_offs, m);
+ return ret;
}
/**
*/
int pwrdm_read_prev_mem_pwrst(struct powerdomain *pwrdm, u8 bank)
{
- u32 m;
+ int ret = -EINVAL;
if (!pwrdm)
- return -EINVAL;
+ return ret;
if (pwrdm->banks < (bank + 1))
- return -EEXIST;
+ return ret;
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,
- * but the type of value returned is the same for each
- * powerdomain.
- */
- switch (bank) {
- case 0:
- m = OMAP3430_LASTMEM1STATEENTERED_MASK;
- break;
- case 1:
- m = OMAP3430_LASTMEM2STATEENTERED_MASK;
- break;
- case 2:
- m = OMAP3430_LASTSHAREDL2CACHEFLATSTATEENTERED_MASK;
- break;
- case 3:
- m = OMAP3430_LASTL2FLATMEMSTATEENTERED_MASK;
- break;
- default:
- WARN_ON(1); /* should never happen */
- return -EEXIST;
- }
+ if (arch_pwrdm && arch_pwrdm->pwrdm_read_prev_mem_pwrst)
+ ret = arch_pwrdm->pwrdm_read_prev_mem_pwrst(pwrdm, bank);
- return prm_read_mod_bits_shift(pwrdm->prcm_offs,
- OMAP3430_PM_PREPWSTST, m);
+ return ret;
}
/**
*/
int pwrdm_read_mem_retst(struct powerdomain *pwrdm, u8 bank)
{
- u32 m;
+ int ret = -EINVAL;
if (!pwrdm)
- return -EINVAL;
+ return ret;
if (pwrdm->banks < (bank + 1))
- return -EEXIST;
+ return ret;
- /*
- * The register bit names below may not correspond to the
- * actual names of the bits in each powerdomain's register,
- * but the type of value returned is the same for each
- * powerdomain.
- */
- switch (bank) {
- case 0:
- m = OMAP_MEM0_RETSTATE_MASK;
- break;
- case 1:
- m = OMAP_MEM1_RETSTATE_MASK;
- break;
- case 2:
- m = OMAP_MEM2_RETSTATE_MASK;
- break;
- case 3:
- m = OMAP_MEM3_RETSTATE_MASK;
- break;
- case 4:
- m = OMAP_MEM4_RETSTATE_MASK;
- break;
- default:
- WARN_ON(1); /* should never happen */
- return -EEXIST;
- }
+ if (arch_pwrdm && arch_pwrdm->pwrdm_read_mem_retst)
+ ret = arch_pwrdm->pwrdm_read_mem_retst(pwrdm, bank);
- return prm_read_mod_bits_shift(pwrdm->prcm_offs,
- pwrstctrl_reg_offs, m);
+ return ret;
}
/**
*/
int pwrdm_clear_all_prev_pwrst(struct powerdomain *pwrdm)
{
+ int ret = -EINVAL;
+
if (!pwrdm)
- return -EINVAL;
+ return ret;
/*
* XXX should get the powerdomain's current state here;
pr_debug("powerdomain: clearing previous power state reg for %s\n",
pwrdm->name);
- prm_write_mod_reg(0, pwrdm->prcm_offs, OMAP3430_PM_PREPWSTST);
+ if (arch_pwrdm && arch_pwrdm->pwrdm_clear_all_prev_pwrst)
+ ret = arch_pwrdm->pwrdm_clear_all_prev_pwrst(pwrdm);
- return 0;
+ return ret;
}
/**
*/
int pwrdm_enable_hdwr_sar(struct powerdomain *pwrdm)
{
+ int ret = -EINVAL;
+
if (!pwrdm)
- return -EINVAL;
+ return ret;
if (!(pwrdm->flags & PWRDM_HAS_HDWR_SAR))
- return -EINVAL;
+ return ret;
pr_debug("powerdomain: %s: setting SAVEANDRESTORE bit\n",
pwrdm->name);
- prm_rmw_mod_reg_bits(0, 1 << OMAP3430ES2_SAVEANDRESTORE_SHIFT,
- pwrdm->prcm_offs, pwrstctrl_reg_offs);
+ if (arch_pwrdm && arch_pwrdm->pwrdm_enable_hdwr_sar)
+ ret = arch_pwrdm->pwrdm_enable_hdwr_sar(pwrdm);
- return 0;
+ return ret;
}
/**
*/
int pwrdm_disable_hdwr_sar(struct powerdomain *pwrdm)
{
+ int ret = -EINVAL;
+
if (!pwrdm)
- return -EINVAL;
+ return ret;
if (!(pwrdm->flags & PWRDM_HAS_HDWR_SAR))
- return -EINVAL;
+ return ret;
pr_debug("powerdomain: %s: clearing SAVEANDRESTORE bit\n",
pwrdm->name);
- prm_rmw_mod_reg_bits(1 << OMAP3430ES2_SAVEANDRESTORE_SHIFT, 0,
- pwrdm->prcm_offs, pwrstctrl_reg_offs);
+ if (arch_pwrdm && arch_pwrdm->pwrdm_disable_hdwr_sar)
+ ret = arch_pwrdm->pwrdm_disable_hdwr_sar(pwrdm);
- return 0;
+ return ret;
}
/**
*/
int pwrdm_set_lowpwrstchange(struct powerdomain *pwrdm)
{
+ int ret = -EINVAL;
+
if (!pwrdm)
return -EINVAL;
pr_debug("powerdomain: %s: setting LOWPOWERSTATECHANGE bit\n",
pwrdm->name);
- prm_rmw_mod_reg_bits(OMAP4430_LOWPOWERSTATECHANGE_MASK,
- (1 << OMAP4430_LOWPOWERSTATECHANGE_SHIFT),
- pwrdm->prcm_offs, pwrstctrl_reg_offs);
+ if (arch_pwrdm && arch_pwrdm->pwrdm_set_lowpwrstchange)
+ ret = arch_pwrdm->pwrdm_set_lowpwrstchange(pwrdm);
- return 0;
+ return ret;
}
/**
*/
int pwrdm_wait_transition(struct powerdomain *pwrdm)
{
- u32 c = 0;
+ int ret = -EINVAL;
if (!pwrdm)
return -EINVAL;
- /*
- * REVISIT: pwrdm_wait_transition() may be better implemented
- * via a callback and a periodic timer check -- how long do we expect
- * powerdomain transitions to take?
- */
-
- /* XXX Is this udelay() value meaningful? */
- while ((prm_read_mod_reg(pwrdm->prcm_offs, pwrstst_reg_offs) &
- OMAP_INTRANSITION_MASK) &&
- (c++ < PWRDM_TRANSITION_BAILOUT))
- udelay(1);
+ if (arch_pwrdm && arch_pwrdm->pwrdm_wait_transition)
+ ret = arch_pwrdm->pwrdm_wait_transition(pwrdm);
- if (c > PWRDM_TRANSITION_BAILOUT) {
- printk(KERN_ERR "powerdomain: waited too long for "
- "powerdomain %s to complete transition\n", pwrdm->name);
- return -EAGAIN;
- }
-
- pr_debug("powerdomain: completed transition in %d loops\n", c);
-
- return 0;
+ return ret;
}
int pwrdm_state_switch(struct powerdomain *pwrdm)
pwrdm_for_each(_pwrdm_post_transition_cb, NULL);
return 0;
}
+
+/**
+ * pwrdm_get_context_loss_count - get powerdomain's context loss count
+ * @pwrdm: struct powerdomain * to wait for
+ *
+ * Context loss count is the sum of powerdomain off-mode counter, the
+ * logic off counter and the per-bank memory off counter. Returns 0
+ * (and WARNs) upon error, otherwise, returns the context loss count.
+ */
+u32 pwrdm_get_context_loss_count(struct powerdomain *pwrdm)
+{
+ int i, count;
+
+ if (!pwrdm) {
+ WARN(1, "powerdomain: %s: pwrdm is null\n", __func__);
+ return 0;
+ }
+
+ count = pwrdm->state_counter[PWRDM_POWER_OFF];
+ count += pwrdm->ret_logic_off_counter;
+
+ for (i = 0; i < pwrdm->banks; i++)
+ count += pwrdm->ret_mem_off_counter[i];
+
+ pr_debug("powerdomain: %s: context loss count = %u\n",
+ pwrdm->name, count);
+
+ return count;
+}
git.openpandora.org / pandora-kernel.git / blobdiff