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authorLinus Torvalds <torvalds@linux-foundation.org>2012-03-30 16:45:38 -0700
committerLinus Torvalds <torvalds@linux-foundation.org>2012-03-30 16:45:39 -0700
commita335750b9a039a9d4cd727cdccacfb90fd63c4e8 (patch)
tree8f3198984fb75fe494e771d9431f6799228623c5 /arch/arm/mach-davinci
parent10f3cb41d48ab30f5c754b30eea557371892b4c2 (diff)
parentd326f44e5f2204c7a24db69bfc6dd3fe5f86182b (diff)
Merge branch 'release' of git://git.kernel.org/pub/scm/linux/kernel/git/lenb/linux
Pull ACPI & Power Management changes from Len Brown: - ACPI 5.0 after-ripples, ACPICA/Linux divergence cleanup - cpuidle evolving, more ARM use - thermal sub-system evolving, ditto - assorted other PM bits Fix up conflicts in various cpuidle implementations due to ARM cpuidle cleanups (ARM at91 self-refresh and cpu idle code rewritten into "standby" in asm conflicting with the consolidation of cpuidle time keeping), trivial SH include file context conflict and RCU tracing fixes in generic code. * 'release' of git://git.kernel.org/pub/scm/linux/kernel/git/lenb/linux: (77 commits) ACPI throttling: fix endian bug in acpi_read_throttling_status() Disable MCP limit exceeded messages from Intel IPS driver ACPI video: Don't start video device until its associated input device has been allocated ACPI video: Harden video bus adding. ACPI: Add support for exposing BGRT data ACPI: export acpi_kobj ACPI: Fix logic for removing mappings in 'acpi_unmap' CPER failed to handle generic error records with multiple sections ACPI: Clean redundant codes in scan.c ACPI: Fix unprotected smp_processor_id() in acpi_processor_cst_has_changed() ACPI: consistently use should_use_kmap() PNPACPI: Fix device ref leaking in acpi_pnp_match ACPI: Fix use-after-free in acpi_map_lsapic ACPI: processor_driver: add missing kfree ACPI, APEI: Fix incorrect APEI register bit width check and usage Update documentation for parameter *notrigger* in einj.txt ACPI, APEI, EINJ, new parameter to control trigger action ACPI, APEI, EINJ, limit the range of einj_param ACPI, APEI, Fix ERST header length check cpuidle: power_usage should be declared signed integer ...
Diffstat (limited to 'arch/arm/mach-davinci')
-rw-r--r--arch/arm/mach-davinci/cpuidle.c83
1 files changed, 34 insertions, 49 deletions
diff --git a/arch/arm/mach-davinci/cpuidle.c b/arch/arm/mach-davinci/cpuidle.c
index a30c7c5a6d83..9107691adbdb 100644
--- a/arch/arm/mach-davinci/cpuidle.c
+++ b/arch/arm/mach-davinci/cpuidle.c
@@ -18,6 +18,7 @@
#include <linux/io.h>
#include <linux/export.h>
#include <asm/proc-fns.h>
+#include <asm/cpuidle.h>
#include <mach/cpuidle.h>
#include <mach/ddr2.h>
@@ -30,12 +31,43 @@ struct davinci_ops {
u32 flags;
};
+/* Actual code that puts the SoC in different idle states */
+static int davinci_enter_idle(struct cpuidle_device *dev,
+ struct cpuidle_driver *drv,
+ int index)
+{
+ struct cpuidle_state_usage *state_usage = &dev->states_usage[index];
+ struct davinci_ops *ops = cpuidle_get_statedata(state_usage);
+
+ if (ops && ops->enter)
+ ops->enter(ops->flags);
+
+ index = cpuidle_wrap_enter(dev, drv, index,
+ arm_cpuidle_simple_enter);
+
+ if (ops && ops->exit)
+ ops->exit(ops->flags);
+
+ return index;
+}
+
/* fields in davinci_ops.flags */
#define DAVINCI_CPUIDLE_FLAGS_DDR2_PWDN BIT(0)
static struct cpuidle_driver davinci_idle_driver = {
- .name = "cpuidle-davinci",
- .owner = THIS_MODULE,
+ .name = "cpuidle-davinci",
+ .owner = THIS_MODULE,
+ .en_core_tk_irqen = 1,
+ .states[0] = ARM_CPUIDLE_WFI_STATE,
+ .states[1] = {
+ .enter = davinci_enter_idle,
+ .exit_latency = 10,
+ .target_residency = 100000,
+ .flags = CPUIDLE_FLAG_TIME_VALID,
+ .name = "DDR SR",
+ .desc = "WFI and DDR Self Refresh",
+ },
+ .state_count = DAVINCI_CPUIDLE_MAX_STATES,
};
static DEFINE_PER_CPU(struct cpuidle_device, davinci_cpuidle_device);
@@ -77,41 +109,10 @@ static struct davinci_ops davinci_states[DAVINCI_CPUIDLE_MAX_STATES] = {
},
};
-/* Actual code that puts the SoC in different idle states */
-static int davinci_enter_idle(struct cpuidle_device *dev,
- struct cpuidle_driver *drv,
- int index)
-{
- struct cpuidle_state_usage *state_usage = &dev->states_usage[index];
- struct davinci_ops *ops = cpuidle_get_statedata(state_usage);
- struct timeval before, after;
- int idle_time;
-
- local_irq_disable();
- do_gettimeofday(&before);
-
- if (ops && ops->enter)
- ops->enter(ops->flags);
- /* Wait for interrupt state */
- cpu_do_idle();
- if (ops && ops->exit)
- ops->exit(ops->flags);
-
- do_gettimeofday(&after);
- local_irq_enable();
- idle_time = (after.tv_sec - before.tv_sec) * USEC_PER_SEC +
- (after.tv_usec - before.tv_usec);
-
- dev->last_residency = idle_time;
-
- return index;
-}
-
static int __init davinci_cpuidle_probe(struct platform_device *pdev)
{
int ret;
struct cpuidle_device *device;
- struct cpuidle_driver *driver = &davinci_idle_driver;
struct davinci_cpuidle_config *pdata = pdev->dev.platform_data;
device = &per_cpu(davinci_cpuidle_device, smp_processor_id());
@@ -123,27 +124,11 @@ static int __init davinci_cpuidle_probe(struct platform_device *pdev)
ddr2_reg_base = pdata->ddr2_ctlr_base;
- /* Wait for interrupt state */
- driver->states[0].enter = davinci_enter_idle;
- driver->states[0].exit_latency = 1;
- driver->states[0].target_residency = 10000;
- driver->states[0].flags = CPUIDLE_FLAG_TIME_VALID;
- strcpy(driver->states[0].name, "WFI");
- strcpy(driver->states[0].desc, "Wait for interrupt");
-
- /* Wait for interrupt and DDR self refresh state */
- driver->states[1].enter = davinci_enter_idle;
- driver->states[1].exit_latency = 10;
- driver->states[1].target_residency = 10000;
- driver->states[1].flags = CPUIDLE_FLAG_TIME_VALID;
- strcpy(driver->states[1].name, "DDR SR");
- strcpy(driver->states[1].desc, "WFI and DDR Self Refresh");
if (pdata->ddr2_pdown)
davinci_states[1].flags |= DAVINCI_CPUIDLE_FLAGS_DDR2_PWDN;
cpuidle_set_statedata(&device->states_usage[1], &davinci_states[1]);
device->state_count = DAVINCI_CPUIDLE_MAX_STATES;
- driver->state_count = DAVINCI_CPUIDLE_MAX_STATES;
ret = cpuidle_register_driver(&davinci_idle_driver);
if (ret) {