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Diffstat (limited to 'ANDROID_3.4.5/arch/arm/mach-omap2/pm.c')
-rw-r--r--ANDROID_3.4.5/arch/arm/mach-omap2/pm.c325
1 files changed, 0 insertions, 325 deletions
diff --git a/ANDROID_3.4.5/arch/arm/mach-omap2/pm.c b/ANDROID_3.4.5/arch/arm/mach-omap2/pm.c
deleted file mode 100644
index d0c1c969..00000000
--- a/ANDROID_3.4.5/arch/arm/mach-omap2/pm.c
+++ /dev/null
@@ -1,325 +0,0 @@
-/*
- * pm.c - Common OMAP2+ power management-related code
- *
- * Copyright (C) 2010 Texas Instruments, Inc.
- * Copyright (C) 2010 Nokia Corporation
- *
- * This program is free software; you can redistribute it and/or modify
- * it under the terms of the GNU General Public License version 2 as
- * published by the Free Software Foundation.
- */
-
-#include <linux/kernel.h>
-#include <linux/init.h>
-#include <linux/io.h>
-#include <linux/err.h>
-#include <linux/opp.h>
-#include <linux/export.h>
-#include <linux/suspend.h>
-
-#include <asm/system_misc.h>
-
-#include <plat/omap-pm.h>
-#include <plat/omap_device.h>
-#include "common.h"
-
-#include "prcm-common.h"
-#include "voltage.h"
-#include "powerdomain.h"
-#include "clockdomain.h"
-#include "pm.h"
-#include "twl-common.h"
-
-static struct omap_device_pm_latency *pm_lats;
-
-/*
- * omap_pm_suspend: points to a function that does the SoC-specific
- * suspend work
- */
-int (*omap_pm_suspend)(void);
-
-static int __init _init_omap_device(char *name)
-{
- struct omap_hwmod *oh;
- struct platform_device *pdev;
-
- oh = omap_hwmod_lookup(name);
- if (WARN(!oh, "%s: could not find omap_hwmod for %s\n",
- __func__, name))
- return -ENODEV;
-
- pdev = omap_device_build(oh->name, 0, oh, NULL, 0, pm_lats, 0, false);
- if (WARN(IS_ERR(pdev), "%s: could not build omap_device for %s\n",
- __func__, name))
- return -ENODEV;
-
- return 0;
-}
-
-/*
- * Build omap_devices for processors and bus.
- */
-static void __init omap2_init_processor_devices(void)
-{
- _init_omap_device("mpu");
- if (omap3_has_iva())
- _init_omap_device("iva");
-
- if (cpu_is_omap44xx()) {
- _init_omap_device("l3_main_1");
- _init_omap_device("dsp");
- _init_omap_device("iva");
- } else {
- _init_omap_device("l3_main");
- }
-}
-
-/* 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)
-{
- if (clkdm->flags & CLKDM_CAN_ENABLE_AUTO)
- clkdm_allow_idle(clkdm);
- else if (clkdm->flags & CLKDM_CAN_FORCE_SLEEP &&
- atomic_read(&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
- * the clock associated with the voltage domain, finds out the correct
- * opp entry and sets the voltage domain to the voltage specified
- * in the opp entry
- */
-static int __init omap2_set_init_voltage(char *vdd_name, char *clk_name,
- const char *oh_name)
-{
- struct voltagedomain *voltdm;
- struct clk *clk;
- struct opp *opp;
- unsigned long freq, bootup_volt;
- struct device *dev;
-
- if (!vdd_name || !clk_name || !oh_name) {
- pr_err("%s: invalid parameters\n", __func__);
- goto exit;
- }
-
- dev = omap_device_get_by_hwmod_name(oh_name);
- if (IS_ERR(dev)) {
- pr_err("%s: Unable to get dev pointer for hwmod %s\n",
- __func__, oh_name);
- goto exit;
- }
-
- voltdm = voltdm_lookup(vdd_name);
- if (IS_ERR(voltdm)) {
- pr_err("%s: unable to get vdd pointer for vdd_%s\n",
- __func__, vdd_name);
- goto exit;
- }
-
- clk = clk_get(NULL, clk_name);
- if (IS_ERR(clk)) {
- pr_err("%s: unable to get clk %s\n", __func__, clk_name);
- goto exit;
- }
-
- freq = clk->rate;
- clk_put(clk);
-
- rcu_read_lock();
- opp = 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",
- __func__, vdd_name);
- goto exit;
- }
-
- bootup_volt = 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", __func__, vdd_name);
- goto exit;
- }
-
- voltdm_scale(voltdm, bootup_volt);
- return 0;
-
-exit:
- pr_err("%s: unable to set vdd_%s\n", __func__, vdd_name);
- return -EINVAL;
-}
-
-#ifdef CONFIG_SUSPEND
-static int omap_pm_enter(suspend_state_t suspend_state)
-{
- int ret = 0;
-
- if (!omap_pm_suspend)
- return -ENOENT; /* XXX doublecheck */
-
- switch (suspend_state) {
- case PM_SUSPEND_STANDBY:
- case PM_SUSPEND_MEM:
- ret = omap_pm_suspend();
- break;
- default:
- ret = -EINVAL;
- }
-
- return ret;
-}
-
-static int omap_pm_begin(suspend_state_t state)
-{
- disable_hlt();
- if (cpu_is_omap34xx())
- omap_prcm_irq_prepare();
- return 0;
-}
-
-static void omap_pm_end(void)
-{
- enable_hlt();
- return;
-}
-
-static void omap_pm_finish(void)
-{
- if (cpu_is_omap34xx())
- omap_prcm_irq_complete();
-}
-
-static const struct platform_suspend_ops omap_pm_ops = {
- .begin = omap_pm_begin,
- .end = omap_pm_end,
- .enter = omap_pm_enter,
- .finish = omap_pm_finish,
- .valid = suspend_valid_only_mem,
-};
-
-#endif /* CONFIG_SUSPEND */
-
-static void __init omap3_init_voltages(void)
-{
- if (!cpu_is_omap34xx())
- return;
-
- omap2_set_init_voltage("mpu_iva", "dpll1_ck", "mpu");
- omap2_set_init_voltage("core", "l3_ick", "l3_main");
-}
-
-static void __init omap4_init_voltages(void)
-{
- if (!cpu_is_omap44xx())
- return;
-
- omap2_set_init_voltage("mpu", "dpll_mpu_ck", "mpu");
- omap2_set_init_voltage("core", "l3_div_ck", "l3_main_1");
- omap2_set_init_voltage("iva", "dpll_iva_m5x2_ck", "iva");
-}
-
-static int __init omap2_common_pm_init(void)
-{
- if (!of_have_populated_dt())
- omap2_init_processor_devices();
- omap_pm_if_init();
-
- return 0;
-}
-postcore_initcall(omap2_common_pm_init);
-
-static 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;
-
- /* Init the voltage layer */
- omap_pmic_late_init();
- omap_voltage_late_init();
-
- /* Initialize the voltages */
- omap3_init_voltages();
- omap4_init_voltages();
-
- /* Smartreflex device init */
- omap_devinit_smartreflex();
-
-#ifdef CONFIG_SUSPEND
- suspend_set_ops(&omap_pm_ops);
-#endif
-
- return 0;
-}
-late_initcall(omap2_common_pm_late_init);