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Diffstat (limited to 'arch/arm/mach-omap1/pm.c')
-rw-r--r--arch/arm/mach-omap1/pm.c142
1 files changed, 62 insertions, 80 deletions
diff --git a/arch/arm/mach-omap1/pm.c b/arch/arm/mach-omap1/pm.c
index b1d3f9fade2..34b4c004496 100644
--- a/arch/arm/mach-omap1/pm.c
+++ b/arch/arm/mach-omap1/pm.c
@@ -37,27 +37,32 @@
#include <linux/suspend.h>
#include <linux/sched.h>
-#include <linux/proc_fs.h>
+#include <linux/debugfs.h>
+#include <linux/seq_file.h>
#include <linux/interrupt.h>
#include <linux/sysfs.h>
#include <linux/module.h>
#include <linux/io.h>
+#include <linux/atomic.h>
+#include <linux/cpu.h>
+#include <asm/fncpy.h>
+#include <asm/system_misc.h>
#include <asm/irq.h>
-#include <asm/atomic.h>
#include <asm/mach/time.h>
#include <asm/mach/irq.h>
-#include <plat/cpu.h>
-#include <mach/irqs.h>
-#include <plat/clock.h>
-#include <plat/sram.h>
-#include <plat/tc.h>
-#include <plat/mux.h>
-#include <plat/dma.h>
+#include <mach/tc.h>
+#include <mach/mux.h>
+#include <linux/omap-dma.h>
#include <plat/dmtimer.h>
+#include <mach/irqs.h>
+
+#include "iomap.h"
+#include "clock.h"
#include "pm.h"
+#include "sram.h"
static unsigned int arm_sleep_save[ARM_SLEEP_SAVE_SIZE];
static unsigned short dsp_sleep_save[DSP_SLEEP_SAVE_SIZE];
@@ -66,7 +71,11 @@ static unsigned int mpui7xx_sleep_save[MPUI7XX_SLEEP_SAVE_SIZE];
static unsigned int mpui1510_sleep_save[MPUI1510_SLEEP_SAVE_SIZE];
static unsigned int mpui1610_sleep_save[MPUI1610_SLEEP_SAVE_SIZE];
-#ifdef CONFIG_OMAP_32K_TIMER
+#ifndef CONFIG_OMAP_32K_TIMER
+
+static unsigned short enable_dyn_sleep = 0;
+
+#else
static unsigned short enable_dyn_sleep = 1;
@@ -108,31 +117,14 @@ void omap1_pm_idle(void)
__u32 use_idlect1 = arm_idlect1_mask;
int do_sleep = 0;
- local_irq_disable();
local_fiq_disable();
- if (need_resched()) {
- local_fiq_enable();
- local_irq_enable();
- return;
- }
-#ifdef CONFIG_OMAP_MPU_TIMER
+#if defined(CONFIG_OMAP_MPU_TIMER) && !defined(CONFIG_OMAP_DM_TIMER)
#warning Enable 32kHz OS timer in order to allow sleep states in idle
use_idlect1 = use_idlect1 & ~(1 << 9);
#else
-
- while (enable_dyn_sleep) {
-
-#ifdef CONFIG_CBUS_TAHVO_USB
- extern int vbus_active;
- /* Clock requirements? */
- if (vbus_active)
- break;
-#endif
+ if (enable_dyn_sleep)
do_sleep = 1;
- break;
- }
-
#endif
#ifdef CONFIG_OMAP_DM_TIMER
@@ -157,14 +149,12 @@ void omap1_pm_idle(void)
omap_writel(saved_idlect1, ARM_IDLECT1);
local_fiq_enable();
- local_irq_enable();
return;
}
omap_sram_suspend(omap_readl(ARM_IDLECT1),
omap_readl(ARM_IDLECT2));
local_fiq_enable();
- local_irq_enable();
}
/*
@@ -427,23 +417,12 @@ void omap1_pm_suspend(void)
omap_rev());
}
-#if defined(DEBUG) && defined(CONFIG_PROC_FS)
-static int g_read_completed;
-
+#ifdef CONFIG_DEBUG_FS
/*
* Read system PM registers for debugging
*/
-static int omap_pm_read_proc(
- char *page_buffer,
- char **my_first_byte,
- off_t virtual_start,
- int length,
- int *eof,
- void *data)
+static int omap_pm_debug_show(struct seq_file *m, void *v)
{
- int my_buffer_offset = 0;
- char * const my_base = page_buffer;
-
ARM_SAVE(ARM_CKCTL);
ARM_SAVE(ARM_IDLECT1);
ARM_SAVE(ARM_IDLECT2);
@@ -484,10 +463,7 @@ static int omap_pm_read_proc(
MPUI1610_SAVE(EMIFS_CONFIG);
}
- if (virtual_start == 0) {
- g_read_completed = 0;
-
- my_buffer_offset += sprintf(my_base + my_buffer_offset,
+ seq_printf(m,
"ARM_CKCTL_REG: 0x%-8x \n"
"ARM_IDLECT1_REG: 0x%-8x \n"
"ARM_IDLECT2_REG: 0x%-8x \n"
@@ -517,8 +493,8 @@ static int omap_pm_read_proc(
ULPD_SHOW(ULPD_STATUS_REQ),
ULPD_SHOW(ULPD_POWER_CTRL));
- if (cpu_is_omap7xx()) {
- my_buffer_offset += sprintf(my_base + my_buffer_offset,
+ if (cpu_is_omap7xx()) {
+ seq_printf(m,
"MPUI7XX_CTRL_REG 0x%-8x \n"
"MPUI7XX_DSP_STATUS_REG: 0x%-8x \n"
"MPUI7XX_DSP_BOOT_CONFIG_REG: 0x%-8x \n"
@@ -531,8 +507,8 @@ static int omap_pm_read_proc(
MPUI7XX_SHOW(MPUI_DSP_API_CONFIG),
MPUI7XX_SHOW(EMIFF_SDRAM_CONFIG),
MPUI7XX_SHOW(EMIFS_CONFIG));
- } else if (cpu_is_omap15xx()) {
- my_buffer_offset += sprintf(my_base + my_buffer_offset,
+ } else if (cpu_is_omap15xx()) {
+ seq_printf(m,
"MPUI1510_CTRL_REG 0x%-8x \n"
"MPUI1510_DSP_STATUS_REG: 0x%-8x \n"
"MPUI1510_DSP_BOOT_CONFIG_REG: 0x%-8x \n"
@@ -545,8 +521,8 @@ static int omap_pm_read_proc(
MPUI1510_SHOW(MPUI_DSP_API_CONFIG),
MPUI1510_SHOW(EMIFF_SDRAM_CONFIG),
MPUI1510_SHOW(EMIFS_CONFIG));
- } else if (cpu_is_omap16xx()) {
- my_buffer_offset += sprintf(my_base + my_buffer_offset,
+ } else if (cpu_is_omap16xx()) {
+ seq_printf(m,
"MPUI1610_CTRL_REG 0x%-8x \n"
"MPUI1610_DSP_STATUS_REG: 0x%-8x \n"
"MPUI1610_DSP_BOOT_CONFIG_REG: 0x%-8x \n"
@@ -559,31 +535,37 @@ static int omap_pm_read_proc(
MPUI1610_SHOW(MPUI_DSP_API_CONFIG),
MPUI1610_SHOW(EMIFF_SDRAM_CONFIG),
MPUI1610_SHOW(EMIFS_CONFIG));
- }
-
- g_read_completed++;
- } else if (g_read_completed >= 1) {
- *eof = 1;
- return 0;
}
- g_read_completed++;
- *my_first_byte = page_buffer;
- return my_buffer_offset;
+ return 0;
}
-static void omap_pm_init_proc(void)
+static int omap_pm_debug_open(struct inode *inode, struct file *file)
{
- struct proc_dir_entry *entry;
-
- entry = create_proc_read_entry("driver/omap_pm",
- S_IWUSR | S_IRUGO, NULL,
- omap_pm_read_proc, NULL);
+ return single_open(file, omap_pm_debug_show,
+ &inode->i_private);
}
-#endif /* DEBUG && CONFIG_PROC_FS */
+static const struct file_operations omap_pm_debug_fops = {
+ .open = omap_pm_debug_open,
+ .read = seq_read,
+ .llseek = seq_lseek,
+ .release = single_release,
+};
+
+static void omap_pm_init_debugfs(void)
+{
+ struct dentry *d;
-static void (*saved_idle)(void) = NULL;
+ d = debugfs_create_dir("pm_debug", NULL);
+ if (!d)
+ return;
+
+ (void) debugfs_create_file("omap_pm", S_IWUSR | S_IRUGO,
+ d, NULL, &omap_pm_debug_fops);
+}
+
+#endif /* CONFIG_DEBUG_FS */
/*
* omap_pm_prepare - Do preliminary suspend work.
@@ -592,9 +574,7 @@ static void (*saved_idle)(void) = NULL;
static int omap_pm_prepare(void)
{
/* We cannot sleep in idle until we have resumed */
- saved_idle = pm_idle;
- pm_idle = NULL;
-
+ cpu_idle_poll_ctrl(true);
return 0;
}
@@ -630,7 +610,7 @@ static int omap_pm_enter(suspend_state_t state)
static void omap_pm_finish(void)
{
- pm_idle = saved_idle;
+ cpu_idle_poll_ctrl(false);
}
@@ -641,13 +621,12 @@ static irqreturn_t omap_wakeup_interrupt(int irq, void *dev)
static struct irqaction omap_wakeup_irq = {
.name = "peripheral wakeup",
- .flags = IRQF_DISABLED,
.handler = omap_wakeup_interrupt
};
-static struct platform_suspend_ops omap_pm_ops ={
+static const struct platform_suspend_ops omap_pm_ops = {
.prepare = omap_pm_prepare,
.enter = omap_pm_enter,
.finish = omap_pm_finish,
@@ -661,6 +640,9 @@ static int __init omap_pm_init(void)
int error;
#endif
+ if (!cpu_class_is_omap1())
+ return -ENODEV;
+
printk("Power Management for TI OMAP.\n");
/*
@@ -684,7 +666,7 @@ static int __init omap_pm_init(void)
return -ENODEV;
}
- pm_idle = omap1_pm_idle;
+ arm_pm_idle = omap1_pm_idle;
if (cpu_is_omap7xx())
setup_irq(INT_7XX_WAKE_UP_REQ, &omap_wakeup_irq);
@@ -707,8 +689,8 @@ static int __init omap_pm_init(void)
suspend_set_ops(&omap_pm_ops);
-#if defined(DEBUG) && defined(CONFIG_PROC_FS)
- omap_pm_init_proc();
+#ifdef CONFIG_DEBUG_FS
+ omap_pm_init_debugfs();
#endif
#ifdef CONFIG_OMAP_32K_TIMER
generated by cgit v1.2.3-70-g09d2 (git 2.46.0) at 2025-11-05 11:20:53 +0000