@@ -1,7 +1,7 @@
/*
- * OMAP4 CPU idle Routines
+ * OMAP4PLUS CPU idle Routines
*
- * Copyright (C) 2011 Texas Instruments, Inc.
+ * Copyright (C) 2011-2013 Texas Instruments, Inc.
* Santosh Shilimkar <santosh.shilimkar@ti.com>
* Rajendra Nayak <rnayak@ti.com>
*
@@ -22,15 +22,16 @@
#include "pm.h"
#include "prm.h"
#include "clockdomain.h"
+#include "soc.h"
/* Machine specific information */
-struct omap4_idle_statedata {
+struct idle_statedata {
u32 cpu_state;
u32 mpu_logic_state;
u32 mpu_state;
};
-static struct omap4_idle_statedata omap4_idle_data[] = {
+static struct idle_statedata omap4_idle_data[] = {
{
.cpu_state = PWRDM_POWER_ON,
.mpu_state = PWRDM_POWER_ON,
@@ -53,11 +54,12 @@ static struct clockdomain *cpu_clkdm[NR_CPUS];
static atomic_t abort_barrier;
static bool cpu_done[NR_CPUS];
+static struct idle_statedata *state_ptr;
/* Private functions */
/**
- * omap4_enter_idle_coupled_[simple/coupled] - OMAP4 cpuidle entry functions
+ * omap_enter_idle_[simple/coupled] - OMAP4PLUS cpuidle entry functions
* @dev: cpuidle device
* @drv: cpuidle driver
* @index: the index of state to be entered
@@ -66,7 +68,7 @@ static bool cpu_done[NR_CPUS];
* specified low power state selected by the governor.
* Returns the amount of time spent in the low power state.
*/
-static int omap4_enter_idle_simple(struct cpuidle_device *dev,
+static int omap_enter_idle_simple(struct cpuidle_device *dev,
struct cpuidle_driver *drv,
int index)
{
@@ -74,11 +76,11 @@ static int omap4_enter_idle_simple(struct cpuidle_device *dev,
return index;
}
-static int omap4_enter_idle_coupled(struct cpuidle_device *dev,
+static int omap_enter_idle_coupled(struct cpuidle_device *dev,
struct cpuidle_driver *drv,
int index)
{
- struct omap4_idle_statedata *cx = &omap4_idle_data[index];
+ struct idle_statedata *cx = state_ptr + index;
int cpu_id = smp_processor_id();
/*
@@ -167,7 +169,7 @@ static void omap_setup_broadcast_timer(void *arg)
clockevents_notify(CLOCK_EVT_NOTIFY_BROADCAST_ON, &cpu);
}
-static DEFINE_PER_CPU(struct cpuidle_device, omap4_idle_dev);
+static DEFINE_PER_CPU(struct cpuidle_device, omap_idle_dev);
static struct cpuidle_driver omap4_idle_driver = {
.name = "omap4_idle",
@@ -179,7 +181,7 @@ static struct cpuidle_driver omap4_idle_driver = {
.exit_latency = 2 + 2,
.target_residency = 5,
.flags = CPUIDLE_FLAG_TIME_VALID,
- .enter = omap4_enter_idle_simple,
+ .enter = omap_enter_idle_simple,
.name = "C1",
.desc = "MPUSS ON"
},
@@ -188,7 +190,7 @@ static struct cpuidle_driver omap4_idle_driver = {
.exit_latency = 328 + 440,
.target_residency = 960,
.flags = CPUIDLE_FLAG_TIME_VALID | CPUIDLE_FLAG_COUPLED,
- .enter = omap4_enter_idle_coupled,
+ .enter = omap_enter_idle_coupled,
.name = "C2",
.desc = "MPUSS CSWR",
},
@@ -197,7 +199,7 @@ static struct cpuidle_driver omap4_idle_driver = {
.exit_latency = 460 + 518,
.target_residency = 1100,
.flags = CPUIDLE_FLAG_TIME_VALID | CPUIDLE_FLAG_COUPLED,
- .enter = omap4_enter_idle_coupled,
+ .enter = omap_enter_idle_coupled,
.name = "C3",
.desc = "MPUSS OSWR",
},
@@ -219,6 +221,7 @@ int __init omap4_idle_init(void)
struct cpuidle_device *dev;
unsigned int cpu_id = 0;
+ /* Configure the broadcast timer on each cpu */
mpu_pd = pwrdm_lookup("mpu_pwrdm");
cpu_pd[0] = pwrdm_lookup("cpu0_pwrdm");
cpu_pd[1] = pwrdm_lookup("cpu1_pwrdm");
@@ -234,11 +237,12 @@ int __init omap4_idle_init(void)
on_each_cpu(omap_setup_broadcast_timer, NULL, 1);
for_each_cpu(cpu_id, cpu_online_mask) {
- dev = &per_cpu(omap4_idle_dev, cpu_id);
+ dev = &per_cpu(omap_idle_dev, cpu_id);
dev->cpu = cpu_id;
#ifdef CONFIG_ARCH_NEEDS_CPU_IDLE_COUPLED
dev->coupled_cpus = *cpu_online_mask;
#endif
+ state_ptr = &omap4_idle_data[0];
cpuidle_register_driver(&omap4_idle_driver);
if (cpuidle_register_device(dev)) {
The OMAP5 idle driver can re-use most of OMAP4 CPUidle driver implementation. Also the next derivative SOCs are going to re-use the MPUSS so, same driver with minor updates can be re-used. Prepare the code so that its easier to add CPUidle support for OMAP5 devices. Signed-off-by: Santosh Shilimkar <santosh.shilimkar@ti.com> --- arch/arm/mach-omap2/cpuidle44xx.c | 30 +++++++++++++++++------------- 1 file changed, 17 insertions(+), 13 deletions(-)