diff options
Diffstat (limited to 'arch/arm/mach-kirkwood/cpuidle.c')
-rw-r--r-- | arch/arm/mach-kirkwood/cpuidle.c | 73 |
1 files changed, 0 insertions, 73 deletions
diff --git a/arch/arm/mach-kirkwood/cpuidle.c b/arch/arm/mach-kirkwood/cpuidle.c deleted file mode 100644 index f7304670f2f8..000000000000 --- a/arch/arm/mach-kirkwood/cpuidle.c +++ /dev/null @@ -1,73 +0,0 @@ -/* - * arch/arm/mach-kirkwood/cpuidle.c - * - * CPU idle Marvell Kirkwood SoCs - * - * This file is licensed under the terms of the GNU General Public - * License version 2. This program is licensed "as is" without any - * warranty of any kind, whether express or implied. - * - * The cpu idle uses wait-for-interrupt and DDR self refresh in order - * to implement two idle states - - * #1 wait-for-interrupt - * #2 wait-for-interrupt and DDR self refresh - */ - -#include <linux/kernel.h> -#include <linux/init.h> -#include <linux/platform_device.h> -#include <linux/cpuidle.h> -#include <linux/io.h> -#include <linux/export.h> -#include <asm/proc-fns.h> -#include <asm/cpuidle.h> -#include <mach/kirkwood.h> - -#define KIRKWOOD_MAX_STATES 2 - -/* Actual code that puts the SoC in different idle states */ -static int kirkwood_enter_idle(struct cpuidle_device *dev, - struct cpuidle_driver *drv, - int index) -{ - writel(0x7, DDR_OPERATION_BASE); - cpu_do_idle(); - - return index; -} - -static struct cpuidle_driver kirkwood_idle_driver = { - .name = "kirkwood_idle", - .owner = THIS_MODULE, - .en_core_tk_irqen = 1, - .states[0] = ARM_CPUIDLE_WFI_STATE, - .states[1] = { - .enter = kirkwood_enter_idle, - .exit_latency = 10, - .target_residency = 100000, - .flags = CPUIDLE_FLAG_TIME_VALID, - .name = "DDR SR", - .desc = "WFI and DDR Self Refresh", - }, - .state_count = KIRKWOOD_MAX_STATES, -}; - -static DEFINE_PER_CPU(struct cpuidle_device, kirkwood_cpuidle_device); - -/* Initialize CPU idle by registering the idle states */ -static int kirkwood_init_cpuidle(void) -{ - struct cpuidle_device *device; - - device = &per_cpu(kirkwood_cpuidle_device, smp_processor_id()); - device->state_count = KIRKWOOD_MAX_STATES; - - cpuidle_register_driver(&kirkwood_idle_driver); - if (cpuidle_register_device(device)) { - pr_err("kirkwood_init_cpuidle: Failed registering\n"); - return -EIO; - } - return 0; -} - -device_initcall(kirkwood_init_cpuidle); |