aboutsummaryrefslogtreecommitdiff
path: root/arch/arm/mach-davinci/cpuidle.c
diff options
context:
space:
mode:
Diffstat (limited to 'arch/arm/mach-davinci/cpuidle.c')
-rw-r--r--arch/arm/mach-davinci/cpuidle.c84
1 files changed, 25 insertions, 59 deletions
diff --git a/arch/arm/mach-davinci/cpuidle.c b/arch/arm/mach-davinci/cpuidle.c
index 9107691adbd..5ac9e9384b1 100644
--- a/arch/arm/mach-davinci/cpuidle.c
+++ b/arch/arm/mach-davinci/cpuidle.c
@@ -25,35 +25,44 @@
#define DAVINCI_CPUIDLE_MAX_STATES 2
-struct davinci_ops {
- void (*enter) (u32 flags);
- void (*exit) (u32 flags);
- u32 flags;
-};
+static DEFINE_PER_CPU(struct cpuidle_device, davinci_cpuidle_device);
+static void __iomem *ddr2_reg_base;
+static bool ddr2_pdown;
+
+static void davinci_save_ddr_power(int enter, bool pdown)
+{
+ u32 val;
+
+ val = __raw_readl(ddr2_reg_base + DDR2_SDRCR_OFFSET);
+
+ if (enter) {
+ if (pdown)
+ val |= DDR2_SRPD_BIT;
+ else
+ val &= ~DDR2_SRPD_BIT;
+ val |= DDR2_LPMODEN_BIT;
+ } else {
+ val &= ~(DDR2_SRPD_BIT | DDR2_LPMODEN_BIT);
+ }
+
+ __raw_writel(val, ddr2_reg_base + DDR2_SDRCR_OFFSET);
+}
/* 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);
+ davinci_save_ddr_power(1, ddr2_pdown);
index = cpuidle_wrap_enter(dev, drv, index,
arm_cpuidle_simple_enter);
- if (ops && ops->exit)
- ops->exit(ops->flags);
+ davinci_save_ddr_power(0, ddr2_pdown);
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,
@@ -70,45 +79,6 @@ static struct cpuidle_driver davinci_idle_driver = {
.state_count = DAVINCI_CPUIDLE_MAX_STATES,
};
-static DEFINE_PER_CPU(struct cpuidle_device, davinci_cpuidle_device);
-static void __iomem *ddr2_reg_base;
-
-static void davinci_save_ddr_power(int enter, bool pdown)
-{
- u32 val;
-
- val = __raw_readl(ddr2_reg_base + DDR2_SDRCR_OFFSET);
-
- if (enter) {
- if (pdown)
- val |= DDR2_SRPD_BIT;
- else
- val &= ~DDR2_SRPD_BIT;
- val |= DDR2_LPMODEN_BIT;
- } else {
- val &= ~(DDR2_SRPD_BIT | DDR2_LPMODEN_BIT);
- }
-
- __raw_writel(val, ddr2_reg_base + DDR2_SDRCR_OFFSET);
-}
-
-static void davinci_c2state_enter(u32 flags)
-{
- davinci_save_ddr_power(1, !!(flags & DAVINCI_CPUIDLE_FLAGS_DDR2_PWDN));
-}
-
-static void davinci_c2state_exit(u32 flags)
-{
- davinci_save_ddr_power(0, !!(flags & DAVINCI_CPUIDLE_FLAGS_DDR2_PWDN));
-}
-
-static struct davinci_ops davinci_states[DAVINCI_CPUIDLE_MAX_STATES] = {
- [1] = {
- .enter = davinci_c2state_enter,
- .exit = davinci_c2state_exit,
- },
-};
-
static int __init davinci_cpuidle_probe(struct platform_device *pdev)
{
int ret;
@@ -124,11 +94,7 @@ static int __init davinci_cpuidle_probe(struct platform_device *pdev)
ddr2_reg_base = pdata->ddr2_ctlr_base;
- 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;
+ ddr2_pdown = pdata->ddr2_pdown;
ret = cpuidle_register_driver(&davinci_idle_driver);
if (ret) {