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authorLinus Torvalds <torvalds@linux-foundation.org>2012-05-22 09:23:24 -0700
committerLinus Torvalds <torvalds@linux-foundation.org>2012-05-22 09:23:24 -0700
commit9bc747bea5fad819e0c0ad96e6a67ea0640dfe2b (patch)
treed500225e7a1c90a6bd17d3e63e2f6e781810db2b /arch/arm/mach-omap2/cpuidle44xx.c
parent32b908eea9e5ecd1049008e134eadbfcd0da5e38 (diff)
parent0e896b1ddc1905df904df98c204bacf028219729 (diff)
Merge tag 'cleanup' of git://git.kernel.org/pub/scm/linux/kernel/git/arm/arm-soc
Pull first batch of arm-soc cleanups from Olof Johansson: "These cleanups are basically all over the place. The idea is to collect changes with minimal impact but large number of changes so we can avoid them from distracting in the diffstat in the other series. A significant number of lines get removed here, in particular because the ixp2000 and ixp23xx platforms get removed. These have never been extremely popular and have fallen into disuse over time with no active maintainer taking care of them. The u5500 soc never made it into a product, so we are removing it from the ux500 platform. Many good cleanups also went into the at91 and omap platforms, as has been the case for a number of releases." Trivial modify-delete conflicts in arch/arm/mach-{ixp2000,ixp23xx} * tag 'cleanup' of git://git.kernel.org/pub/scm/linux/kernel/git/arm/arm-soc: (152 commits) ARM: clps711x: Cleanup IRQ handling ARM clps711x: Removed unused header mach/time.h ARM: clps711x: Added note about support EP731x CPU to Kconfig ARM: clps711x: Added missing register definitions ARM: clps711x: Used own subarch directory for store header file Dove: Fix Section mismatch warnings ARM: orion5x: ts78xx debugging changes ARM: orion5x: remove PM dependency from ts78xx ARM: orion5x: ts78xx fix NAND resource off by one ARM: orion5x: ts78xx whitespace cleanups Orion5x: Fix Section mismatch warnings Orion5x: Fix warning: struct pci_dev declared inside paramter list ARM: clps711x: Combine header files into one for clps711x-targets ARM: S3C24XX: Use common macro to define resources on mach-qt2410.c ARM: S3C24XX: Use common macro to define resources on mach-osiris.c ARM: EXYNOS: Adapt to cpuidle core time keeping and irq enable ARM: S5PV210: Use common macro to define resources on mach-smdkv210.c ARM: S5PV210: Use common macro to define resources on dev-audio.c ARM: S5PC100: Use common macro to define resources on dev-audio.c ARM: S5P64X0: Use common macro to define resources on dev-audio.c ...
Diffstat (limited to 'arch/arm/mach-omap2/cpuidle44xx.c')
-rw-r--r--arch/arm/mach-omap2/cpuidle44xx.c126
1 files changed, 52 insertions, 74 deletions
diff --git a/arch/arm/mach-omap2/cpuidle44xx.c b/arch/arm/mach-omap2/cpuidle44xx.c
index f386cbe9c889..be1617ca84bd 100644
--- a/arch/arm/mach-omap2/cpuidle44xx.c
+++ b/arch/arm/mach-omap2/cpuidle44xx.c
@@ -24,26 +24,31 @@
#ifdef CONFIG_CPU_IDLE
-/* Machine specific information to be recorded in the C-state driver_data */
+/* Machine specific information */
struct omap4_idle_statedata {
u32 cpu_state;
u32 mpu_logic_state;
u32 mpu_state;
- u8 valid;
};
-static struct cpuidle_params cpuidle_params_table[] = {
- /* C1 - CPU0 ON + CPU1 ON + MPU ON */
- {.exit_latency = 2 + 2 , .target_residency = 5, .valid = 1},
- /* C2- CPU0 OFF + CPU1 OFF + MPU CSWR */
- {.exit_latency = 328 + 440 , .target_residency = 960, .valid = 1},
- /* C3 - CPU0 OFF + CPU1 OFF + MPU OSWR */
- {.exit_latency = 460 + 518 , .target_residency = 1100, .valid = 1},
+static struct omap4_idle_statedata omap4_idle_data[] = {
+ {
+ .cpu_state = PWRDM_POWER_ON,
+ .mpu_state = PWRDM_POWER_ON,
+ .mpu_logic_state = PWRDM_POWER_RET,
+ },
+ {
+ .cpu_state = PWRDM_POWER_OFF,
+ .mpu_state = PWRDM_POWER_RET,
+ .mpu_logic_state = PWRDM_POWER_RET,
+ },
+ {
+ .cpu_state = PWRDM_POWER_OFF,
+ .mpu_state = PWRDM_POWER_RET,
+ .mpu_logic_state = PWRDM_POWER_OFF,
+ },
};
-#define OMAP4_NUM_STATES ARRAY_SIZE(cpuidle_params_table)
-
-struct omap4_idle_statedata omap4_idle_data[OMAP4_NUM_STATES];
static struct powerdomain *mpu_pd, *cpu0_pd, *cpu1_pd;
/**
@@ -60,8 +65,7 @@ static int omap4_enter_idle(struct cpuidle_device *dev,
struct cpuidle_driver *drv,
int index)
{
- struct omap4_idle_statedata *cx =
- cpuidle_get_statedata(&dev->states_usage[index]);
+ struct omap4_idle_statedata *cx = &omap4_idle_data[index];
u32 cpu1_state;
int cpu_id = smp_processor_id();
@@ -78,7 +82,7 @@ static int omap4_enter_idle(struct cpuidle_device *dev,
cpu1_state = pwrdm_read_pwrst(cpu1_pd);
if (cpu1_state != PWRDM_POWER_OFF) {
index = drv->safe_state_index;
- cx = cpuidle_get_statedata(&dev->states_usage[index]);
+ cx = &omap4_idle_data[index];
}
if (index > 0)
@@ -133,36 +137,39 @@ struct cpuidle_driver omap4_idle_driver = {
.name = "omap4_idle",
.owner = THIS_MODULE,
.en_core_tk_irqen = 1,
+ .states = {
+ {
+ /* C1 - CPU0 ON + CPU1 ON + MPU ON */
+ .exit_latency = 2 + 2,
+ .target_residency = 5,
+ .flags = CPUIDLE_FLAG_TIME_VALID,
+ .enter = omap4_enter_idle,
+ .name = "C1",
+ .desc = "MPUSS ON"
+ },
+ {
+ /* C2 - CPU0 OFF + CPU1 OFF + MPU CSWR */
+ .exit_latency = 328 + 440,
+ .target_residency = 960,
+ .flags = CPUIDLE_FLAG_TIME_VALID,
+ .enter = omap4_enter_idle,
+ .name = "C2",
+ .desc = "MPUSS CSWR",
+ },
+ {
+ /* C3 - CPU0 OFF + CPU1 OFF + MPU OSWR */
+ .exit_latency = 460 + 518,
+ .target_residency = 1100,
+ .flags = CPUIDLE_FLAG_TIME_VALID,
+ .enter = omap4_enter_idle,
+ .name = "C3",
+ .desc = "MPUSS OSWR",
+ },
+ },
+ .state_count = ARRAY_SIZE(omap4_idle_data),
+ .safe_state_index = 0,
};
-static inline void _fill_cstate(struct cpuidle_driver *drv,
- int idx, const char *descr)
-{
- struct cpuidle_state *state = &drv->states[idx];
-
- state->exit_latency = cpuidle_params_table[idx].exit_latency;
- state->target_residency = cpuidle_params_table[idx].target_residency;
- state->flags = CPUIDLE_FLAG_TIME_VALID;
- state->enter = omap4_enter_idle;
- sprintf(state->name, "C%d", idx + 1);
- strncpy(state->desc, descr, CPUIDLE_DESC_LEN);
-}
-
-static inline struct omap4_idle_statedata *_fill_cstate_usage(
- struct cpuidle_device *dev,
- int idx)
-{
- struct omap4_idle_statedata *cx = &omap4_idle_data[idx];
- struct cpuidle_state_usage *state_usage = &dev->states_usage[idx];
-
- cx->valid = cpuidle_params_table[idx].valid;
- cpuidle_set_statedata(state_usage, cx);
-
- return cx;
-}
-
-
-
/**
* omap4_idle_init - Init routine for OMAP4 idle
*
@@ -171,9 +178,7 @@ static inline struct omap4_idle_statedata *_fill_cstate_usage(
*/
int __init omap4_idle_init(void)
{
- struct omap4_idle_statedata *cx;
struct cpuidle_device *dev;
- struct cpuidle_driver *drv = &omap4_idle_driver;
unsigned int cpu_id = 0;
mpu_pd = pwrdm_lookup("mpu_pwrdm");
@@ -182,42 +187,15 @@ int __init omap4_idle_init(void)
if ((!mpu_pd) || (!cpu0_pd) || (!cpu1_pd))
return -ENODEV;
-
- drv->safe_state_index = -1;
dev = &per_cpu(omap4_idle_dev, cpu_id);
dev->cpu = cpu_id;
- /* C1 - CPU0 ON + CPU1 ON + MPU ON */
- _fill_cstate(drv, 0, "MPUSS ON");
- drv->safe_state_index = 0;
- cx = _fill_cstate_usage(dev, 0);
- cx->valid = 1; /* C1 is always valid */
- cx->cpu_state = PWRDM_POWER_ON;
- cx->mpu_state = PWRDM_POWER_ON;
- cx->mpu_logic_state = PWRDM_POWER_RET;
-
- /* C2 - CPU0 OFF + CPU1 OFF + MPU CSWR */
- _fill_cstate(drv, 1, "MPUSS CSWR");
- cx = _fill_cstate_usage(dev, 1);
- cx->cpu_state = PWRDM_POWER_OFF;
- cx->mpu_state = PWRDM_POWER_RET;
- cx->mpu_logic_state = PWRDM_POWER_RET;
-
- /* C3 - CPU0 OFF + CPU1 OFF + MPU OSWR */
- _fill_cstate(drv, 2, "MPUSS OSWR");
- cx = _fill_cstate_usage(dev, 2);
- cx->cpu_state = PWRDM_POWER_OFF;
- cx->mpu_state = PWRDM_POWER_RET;
- cx->mpu_logic_state = PWRDM_POWER_OFF;
-
- drv->state_count = OMAP4_NUM_STATES;
cpuidle_register_driver(&omap4_idle_driver);
- dev->state_count = OMAP4_NUM_STATES;
if (cpuidle_register_device(dev)) {
pr_err("%s: CPUidle register device failed\n", __func__);
- return -EIO;
- }
+ return -EIO;
+ }
return 0;
}