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Diffstat (limited to 'arch/arm/mach-omap2/pm.c')
-rw-r--r--arch/arm/mach-omap2/pm.c124
1 files changed, 39 insertions, 85 deletions
diff --git a/arch/arm/mach-omap2/pm.c b/arch/arm/mach-omap2/pm.c
index f4b3143a8b1..828aee9ea6a 100644
--- a/arch/arm/mach-omap2/pm.c
+++ b/arch/arm/mach-omap2/pm.c
@@ -13,7 +13,7 @@
#include <linux/init.h>
#include <linux/io.h>
#include <linux/err.h>
-#include <linux/opp.h>
+#include <linux/pm_opp.h>
#include <linux/export.h>
#include <linux/suspend.h>
#include <linux/cpu.h>
@@ -32,13 +32,13 @@
#include "pm.h"
#include "twl-common.h"
-static struct omap_device_pm_latency *pm_lats;
-
+#ifdef CONFIG_SUSPEND
/*
* omap_pm_suspend: points to a function that does the SoC-specific
* suspend work
*/
-int (*omap_pm_suspend)(void);
+static int (*omap_pm_suspend)(void);
+#endif
#ifdef CONFIG_PM
/**
@@ -82,7 +82,7 @@ static int __init _init_omap_device(char *name)
__func__, name))
return -ENODEV;
- pdev = omap_device_build(oh->name, 0, oh, NULL, 0, pm_lats, 0, false);
+ pdev = omap_device_build(oh->name, 0, oh, NULL, 0);
if (WARN(IS_ERR(pdev), "%s: could not build omap_device for %s\n",
__func__, name))
return -ENODEV;
@@ -108,80 +108,19 @@ static void __init omap2_init_processor_devices(void)
}
}
-/* Types of sleep_switch used in omap_set_pwrdm_state */
-#define FORCEWAKEUP_SWITCH 0
-#define LOWPOWERSTATE_SWITCH 1
-
int __init omap_pm_clkdms_setup(struct clockdomain *clkdm, void *unused)
{
+ /* XXX The usecount test is racy */
if ((clkdm->flags & CLKDM_CAN_ENABLE_AUTO) &&
!(clkdm->flags & CLKDM_MISSING_IDLE_REPORTING))
clkdm_allow_idle(clkdm);
else if (clkdm->flags & CLKDM_CAN_FORCE_SLEEP &&
- atomic_read(&clkdm->usecount) == 0)
+ clkdm->usecount == 0)
clkdm_sleep(clkdm);
return 0;
}
/*
- * This sets pwrdm state (other than mpu & core. Currently only ON &
- * RET are supported.
- */
-int omap_set_pwrdm_state(struct powerdomain *pwrdm, u32 pwrst)
-{
- u8 curr_pwrst, next_pwrst;
- int sleep_switch = -1, ret = 0, hwsup = 0;
-
- if (!pwrdm || IS_ERR(pwrdm))
- return -EINVAL;
-
- while (!(pwrdm->pwrsts & (1 << pwrst))) {
- if (pwrst == PWRDM_POWER_OFF)
- return ret;
- pwrst--;
- }
-
- next_pwrst = pwrdm_read_next_pwrst(pwrdm);
- if (next_pwrst == pwrst)
- return ret;
-
- curr_pwrst = pwrdm_read_pwrst(pwrdm);
- if (curr_pwrst < PWRDM_POWER_ON) {
- if ((curr_pwrst > pwrst) &&
- (pwrdm->flags & PWRDM_HAS_LOWPOWERSTATECHANGE)) {
- sleep_switch = LOWPOWERSTATE_SWITCH;
- } else {
- hwsup = clkdm_in_hwsup(pwrdm->pwrdm_clkdms[0]);
- clkdm_wakeup(pwrdm->pwrdm_clkdms[0]);
- sleep_switch = FORCEWAKEUP_SWITCH;
- }
- }
-
- ret = pwrdm_set_next_pwrst(pwrdm, pwrst);
- if (ret)
- pr_err("%s: unable to set power state of powerdomain: %s\n",
- __func__, pwrdm->name);
-
- switch (sleep_switch) {
- case FORCEWAKEUP_SWITCH:
- if (hwsup)
- clkdm_allow_idle(pwrdm->pwrdm_clkdms[0]);
- else
- clkdm_sleep(pwrdm->pwrdm_clkdms[0]);
- break;
- case LOWPOWERSTATE_SWITCH:
- pwrdm_set_lowpwrstchange(pwrdm);
- pwrdm_wait_transition(pwrdm);
- pwrdm_state_switch(pwrdm);
- break;
- }
-
- return ret;
-}
-
-
-
-/*
* This API is to be called during init to set the various voltage
* domains to the voltage as per the opp table. Typically we boot up
* at the nominal voltage. So this function finds out the rate of
@@ -194,7 +133,7 @@ static int __init omap2_set_init_voltage(char *vdd_name, char *clk_name,
{
struct voltagedomain *voltdm;
struct clk *clk;
- struct opp *opp;
+ struct dev_pm_opp *opp;
unsigned long freq, bootup_volt;
struct device *dev;
@@ -235,7 +174,7 @@ static int __init omap2_set_init_voltage(char *vdd_name, char *clk_name,
clk_put(clk);
rcu_read_lock();
- opp = opp_find_freq_ceil(dev, &freq);
+ opp = dev_pm_opp_find_freq_ceil(dev, &freq);
if (IS_ERR(opp)) {
rcu_read_unlock();
pr_err("%s: unable to find boot up OPP for vdd_%s\n",
@@ -243,7 +182,7 @@ static int __init omap2_set_init_voltage(char *vdd_name, char *clk_name,
goto exit;
}
- bootup_volt = opp_get_voltage(opp);
+ bootup_volt = dev_pm_opp_get_voltage(opp);
rcu_read_unlock();
if (!bootup_volt) {
pr_err("%s: unable to find voltage corresponding to the bootup OPP for vdd_%s\n",
@@ -281,7 +220,7 @@ static int omap_pm_enter(suspend_state_t suspend_state)
static int omap_pm_begin(suspend_state_t state)
{
- disable_hlt();
+ cpu_idle_poll_ctrl(true);
if (cpu_is_omap34xx())
omap_prcm_irq_prepare();
return 0;
@@ -289,8 +228,7 @@ static int omap_pm_begin(suspend_state_t state)
static void omap_pm_end(void)
{
- enable_hlt();
- return;
+ cpu_idle_poll_ctrl(false);
}
static void omap_pm_finish(void)
@@ -307,6 +245,15 @@ static const struct platform_suspend_ops omap_pm_ops = {
.valid = suspend_valid_only_mem,
};
+/**
+ * omap_common_suspend_init - Set common suspend routines for OMAP SoCs
+ * @pm_suspend: function pointer to SoC specific suspend function
+ */
+void omap_common_suspend_init(void *pm_suspend)
+{
+ omap_pm_suspend = pm_suspend;
+ suspend_set_ops(&omap_pm_ops);
+}
#endif /* CONFIG_SUSPEND */
static void __init omap3_init_voltages(void)
@@ -328,6 +275,17 @@ static void __init omap4_init_voltages(void)
omap2_set_init_voltage("iva", "dpll_iva_m5x2_ck", "iva");
}
+static inline void omap_init_cpufreq(void)
+{
+ struct platform_device_info devinfo = { };
+
+ if (!of_have_populated_dt())
+ devinfo.name = "omap-cpufreq";
+ else
+ devinfo.name = "cpufreq-cpu0";
+ platform_device_register_full(&devinfo);
+}
+
static int __init omap2_common_pm_init(void)
{
if (!of_have_populated_dt())
@@ -336,17 +294,14 @@ static int __init omap2_common_pm_init(void)
return 0;
}
-postcore_initcall(omap2_common_pm_init);
+omap_postcore_initcall(omap2_common_pm_init);
int __init omap2_common_pm_late_init(void)
{
- /*
- * In the case of DT, the PMIC and SR initialization will be done using
- * a completely different mechanism.
- * Disable this part if a DT blob is available.
- */
- if (of_have_populated_dt())
- return 0;
+ if (of_have_populated_dt()) {
+ omap3_twl_init();
+ omap4_twl_init();
+ }
/* Init the voltage layer */
omap_pmic_late_init();
@@ -359,9 +314,8 @@ int __init omap2_common_pm_late_init(void)
/* Smartreflex device init */
omap_devinit_smartreflex();
-#ifdef CONFIG_SUSPEND
- suspend_set_ops(&omap_pm_ops);
-#endif
+ /* cpufreq dummy device instantiation */
+ omap_init_cpufreq();
return 0;
}
generated by cgit v1.2.3-70-g09d2 (git 2.46.0) at 2025-11-09 12:18:37 +0000