orion_wdt_init();
}
+/*****************************************************************************
+ * CPU idle
+ ****************************************************************************/
+static struct resource kirkwood_cpuidle_resource[] = {
+ {
+ .flags = IORESOURCE_MEM,
+ .start = DDR_OPERATION_BASE,
+ .end = DDR_OPERATION_BASE + 3,
+ },
+};
+
+static struct platform_device kirkwood_cpuidle = {
+ .name = "kirkwood_cpuidle",
+ .id = -1,
+ .resource = kirkwood_cpuidle_resource,
+ .num_resources = 1,
+};
+
+void __init kirkwood_cpuidle_init(void)
+{
+ platform_device_register(&kirkwood_cpuidle);
+}
/*****************************************************************************
* Time handling
kirkwood_xor1_init();
kirkwood_crypto_init();
+ kirkwood_cpuidle_init();
#ifdef CONFIG_KEXEC
kexec_reinit = kirkwood_enable_pcie;
#endif
*/
#include <linux/kernel.h>
+#include <linux/module.h>
#include <linux/init.h>
#include <linux/platform_device.h>
#include <linux/cpuidle.h>
#include <linux/export.h>
#include <asm/proc-fns.h>
#include <asm/cpuidle.h>
-#include <mach/kirkwood.h>
#define KIRKWOOD_MAX_STATES 2
+static void __iomem *ddr_operation_base;
+
/* Actual code that puts the SoC in different idle states */
static int kirkwood_enter_idle(struct cpuidle_device *dev,
- struct cpuidle_driver *drv,
+ struct cpuidle_driver *drv,
int index)
{
- writel(0x7, DDR_OPERATION_BASE);
+ writel(0x7, ddr_operation_base);
cpu_do_idle();
return index;
},
.state_count = KIRKWOOD_MAX_STATES,
};
+static struct cpuidle_device *device;
static DEFINE_PER_CPU(struct cpuidle_device, kirkwood_cpuidle_device);
/* Initialize CPU idle by registering the idle states */
-static int kirkwood_init_cpuidle(void)
+static int kirkwood_cpuidle_probe(struct platform_device *pdev)
{
- struct cpuidle_device *device;
+ struct resource *res;
+
+ res = platform_get_resource(pdev, IORESOURCE_MEM, 0);
+ if (res == NULL)
+ return -EINVAL;
+
+ ddr_operation_base = devm_request_and_ioremap(&pdev->dev, res);
+ if (!ddr_operation_base)
+ return -EADDRNOTAVAIL;
device = &per_cpu(kirkwood_cpuidle_device, smp_processor_id());
device->state_count = KIRKWOOD_MAX_STATES;
return 0;
}
-device_initcall(kirkwood_init_cpuidle);
+int kirkwood_cpuidle_remove(struct platform_device *pdev)
+{
+ cpuidle_unregister_device(device);
+ cpuidle_unregister_driver(&kirkwood_idle_driver);
+
+ return 0;
+}
+
+static struct platform_driver kirkwood_cpuidle_driver = {
+ .probe = kirkwood_cpuidle_probe,
+ .remove = kirkwood_cpuidle_remove,
+ .driver = {
+ .name = "kirkwood_cpuidle",
+ .owner = THIS_MODULE,
+ },
+};
+
+module_platform_driver(kirkwood_cpuidle_driver);
+
+MODULE_AUTHOR("Andrew Lunn <andrew@lunn.ch>");
+MODULE_DESCRIPTION("Kirkwood cpu idle driver");
+MODULE_LICENSE("GPL v2");
+MODULE_ALIAS("platform:kirkwood-cpuidle");