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Diffstat (limited to 'arch/arm/mach-omap2/pm34xx.c')
-rw-r--r--arch/arm/mach-omap2/pm34xx.c88
1 files changed, 49 insertions, 39 deletions
diff --git a/arch/arm/mach-omap2/pm34xx.c b/arch/arm/mach-omap2/pm34xx.c
index 841ba19d64a6..68975771e633 100644
--- a/arch/arm/mach-omap2/pm34xx.c
+++ b/arch/arm/mach-omap2/pm34xx.c
@@ -1,3 +1,4 @@
+// SPDX-License-Identifier: GPL-2.0-only
/*
* OMAP3 Power Management Routines
*
@@ -12,25 +13,20 @@
* Richard Woodruff <r-woodruff2@ti.com>
*
* Based on pm.c for omap1
- *
- * 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/cpu_pm.h>
#include <linux/pm.h>
#include <linux/suspend.h>
#include <linux/interrupt.h>
#include <linux/module.h>
#include <linux/list.h>
#include <linux/err.h>
-#include <linux/gpio.h>
#include <linux/clk.h>
#include <linux/delay.h>
#include <linux/slab.h>
-#include <linux/omap-dma.h>
-#include <linux/omap-gpmc.h>
-#include <linux/platform_data/gpio-omap.h>
+#include <linux/of.h>
+#include <linux/cpuidle.h>
#include <trace/events/power.h>
@@ -48,6 +44,7 @@
#include "prm3xxx.h"
#include "pm.h"
#include "sdrc.h"
+#include "omap-secure.h"
#include "sram.h"
#include "control.h"
#include "vc.h"
@@ -66,7 +63,6 @@ struct power_state {
static LIST_HEAD(pwrst_list);
-static int (*_omap_save_secure_sram)(u32 *addr);
void (*omap3_do_wfi_sram)(void);
static struct powerdomain *mpu_pwrdm, *neon_pwrdm;
@@ -85,22 +81,16 @@ static void omap3_core_save_context(void)
/* Save the Interrupt controller context */
omap_intc_save_context();
- /* Save the GPMC context */
- omap3_gpmc_save_context();
/* Save the system control module context, padconf already save above*/
omap3_control_save_context();
- omap_dma_global_context_save();
}
static void omap3_core_restore_context(void)
{
/* Restore the control module context, padconf restored by h/w */
omap3_control_restore_context();
- /* Restore the GPMC context */
- omap3_gpmc_restore_context();
/* Restore the interrupt controller context */
omap_intc_restore_context();
- omap_dma_global_context_restore();
}
/*
@@ -121,8 +111,8 @@ static void omap3_save_secure_ram_context(void)
* will hang the system.
*/
pwrdm_set_next_pwrst(mpu_pwrdm, PWRDM_POWER_ON);
- ret = _omap_save_secure_sram((u32 *)(unsigned long)
- __pa(omap3_secure_ram_storage));
+ ret = omap3_save_secure_ram(omap3_secure_ram_storage,
+ OMAP3_SAVE_SECURE_RAM_SZ);
pwrdm_set_next_pwrst(mpu_pwrdm, mpu_next_state);
/* Following is for error tracking, it should not happen */
if (ret) {
@@ -185,7 +175,7 @@ static int omap34xx_do_sram_idle(unsigned long save_state)
return 0;
}
-void omap_sram_idle(void)
+__cpuidle void omap_sram_idle(bool rcuidle)
{
/* Variable to tell what needs to be saved and restored
* in omap_sram_idle*/
@@ -197,8 +187,8 @@ void omap_sram_idle(void)
int mpu_next_state = PWRDM_POWER_ON;
int per_next_state = PWRDM_POWER_ON;
int core_next_state = PWRDM_POWER_ON;
- int per_going_off;
u32 sdrc_pwr = 0;
+ int error;
mpu_next_state = pwrdm_read_next_pwrst(mpu_pwrdm);
switch (mpu_next_state) {
@@ -227,9 +217,10 @@ void omap_sram_idle(void)
pwrdm_pre_transition(NULL);
/* PER */
- if (per_next_state < PWRDM_POWER_ON) {
- per_going_off = (per_next_state == PWRDM_POWER_OFF) ? 1 : 0;
- omap2_gpio_prepare_for_idle(per_going_off);
+ if (per_next_state == PWRDM_POWER_OFF) {
+ error = cpu_cluster_pm_enter();
+ if (error)
+ return;
}
/* CORE */
@@ -264,11 +255,18 @@ void omap_sram_idle(void)
*/
if (save_state)
omap34xx_save_context(omap3_arm_context);
+
+ if (rcuidle)
+ ct_cpuidle_enter();
+
if (save_state == 1 || save_state == 3)
cpu_suspend(save_state, omap34xx_do_sram_idle);
else
omap34xx_do_sram_idle(save_state);
+ if (rcuidle)
+ ct_cpuidle_exit();
+
/* Restore normal SDRC POWER settings */
if (cpu_is_omap3430() && omap_rev() >= OMAP3430_REV_ES3_0 &&
(omap_type() == OMAP2_DEVICE_TYPE_EMU ||
@@ -295,8 +293,8 @@ void omap_sram_idle(void)
pwrdm_post_transition(NULL);
/* PER */
- if (per_next_state < PWRDM_POWER_ON)
- omap2_gpio_resume_after_idle();
+ if (per_next_state == PWRDM_POWER_OFF)
+ cpu_cluster_pm_exit();
}
static void omap3_pm_idle(void)
@@ -304,11 +302,7 @@ static void omap3_pm_idle(void)
if (omap_irq_pending())
return;
- trace_cpu_idle_rcuidle(1, smp_processor_id());
-
- omap_sram_idle();
-
- trace_cpu_idle_rcuidle(PWR_EVENT_EXIT, smp_processor_id());
+ omap3_do_wfi();
}
#ifdef CONFIG_SUSPEND
@@ -330,7 +324,7 @@ static int omap3_pm_suspend(void)
omap3_intc_suspend();
- omap_sram_idle();
+ omap_sram_idle(false);
restore:
/* Restore next_pwrsts */
@@ -420,7 +414,12 @@ static int __init pwrdms_setup(struct powerdomain *pwrdm, void *unused)
if (!pwrst)
return -ENOMEM;
pwrst->pwrdm = pwrdm;
- pwrst->next_state = PWRDM_POWER_RET;
+
+ if (enable_off_mode)
+ pwrst->next_state = PWRDM_POWER_OFF;
+ else
+ pwrst->next_state = PWRDM_POWER_RET;
+
list_add(&pwrst->node, &pwrst_list);
if (pwrdm_has_hdwr_sar(pwrdm))
@@ -434,15 +433,10 @@ static int __init pwrdms_setup(struct powerdomain *pwrdm, void *unused)
*
* The minimum set of functions is pushed to SRAM for execution:
* - omap3_do_wfi for erratum i581 WA,
- * - save_secure_ram_context for security extensions.
*/
void omap_push_sram_idle(void)
{
omap3_do_wfi_sram = omap_sram_push(omap3_do_wfi, omap3_do_wfi_sz);
-
- if (omap_type() != OMAP2_DEVICE_TYPE_GP)
- _omap_save_secure_sram = omap_sram_push(save_secure_ram_context,
- save_secure_ram_context_sz);
}
static void __init pm_errata_configure(void)
@@ -459,6 +453,22 @@ static void __init pm_errata_configure(void)
}
}
+static void __init omap3_pm_check_pmic(void)
+{
+ struct device_node *np;
+
+ np = of_find_compatible_node(NULL, NULL, "ti,twl4030-power-idle");
+ if (!np)
+ np = of_find_compatible_node(NULL, NULL, "ti,twl4030-power-idle-osc-off");
+
+ if (np) {
+ of_node_put(np);
+ enable_off_mode = 1;
+ } else {
+ enable_off_mode = 0;
+ }
+}
+
int __init omap3_pm_init(void)
{
struct power_state *pwrst, *tmp;
@@ -492,6 +502,8 @@ int __init omap3_pm_init(void)
goto err2;
}
+ omap3_pm_check_pmic();
+
ret = pwrdm_for_each(pwrdms_setup, NULL);
if (ret) {
pr_err("Failed to setup powerdomains\n");
@@ -553,15 +565,13 @@ int __init omap3_pm_init(void)
clkdm_add_wkdep(neon_clkdm, mpu_clkdm);
if (omap_type() != OMAP2_DEVICE_TYPE_GP) {
omap3_secure_ram_storage =
- kmalloc(0x803F, GFP_KERNEL);
+ kmalloc(OMAP3_SAVE_SECURE_RAM_SZ, GFP_KERNEL);
if (!omap3_secure_ram_storage)
pr_err("Memory allocation failed when allocating for secure sram context\n");
local_irq_disable();
- omap_dma_global_context_save();
omap3_save_secure_ram_context();
- omap_dma_global_context_restore();
local_irq_enable();
}
generated by cgit (git 2.34.1) at 2025-12-25 22:03:01 +0000