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authorDaniel Lezcano <daniel.lezcano@linaro.org>2013-09-26 11:34:24 -0400
committerDaniel Lezcano <daniel.lezcano@linaro.org>2013-10-16 17:49:35 -0400
commit1ce3c48e6c76920fa46bfdde84a69e155f880c32 (patch)
tree5ead3d0c9bf4b91812460748b0b48ef4d001b300 /arch/arm
parent5ad945ea58f6cab7490dc149974ccb6514cc569a (diff)
ARM: at91: cpuidle: Move driver to drivers/cpuidle
As the cpuidle driver code has no more the dependency with the pm code, the 'standby' callback being passed as a parameter to the device's platform data, we can move the cpuidle driver in the drivers/cpuidle directory. Signed-off-by: Daniel Lezcano <daniel.lezcano@linaro.org> Acked-by: Jean-Christophe PLAGNIOL-VILLARD <plagnioj@jcrosoft.com> Acked-by: Nicolas Ferre <nicolas.ferre@atmel.com> Conflicts: drivers/cpuidle/Kconfig.arm drivers/cpuidle/Makefile
Diffstat (limited to 'arch/arm')
-rw-r--r--arch/arm/mach-at91/Makefile1
-rw-r--r--arch/arm/mach-at91/cpuidle.c69
2 files changed, 0 insertions, 70 deletions
diff --git a/arch/arm/mach-at91/Makefile b/arch/arm/mach-at91/Makefile
index 3b0a9538093c..c1b737097c95 100644
--- a/arch/arm/mach-at91/Makefile
+++ b/arch/arm/mach-at91/Makefile
@@ -98,7 +98,6 @@ obj-y += leds.o
98# Power Management 98# Power Management
99obj-$(CONFIG_PM) += pm.o 99obj-$(CONFIG_PM) += pm.o
100obj-$(CONFIG_AT91_SLOW_CLOCK) += pm_slowclock.o 100obj-$(CONFIG_AT91_SLOW_CLOCK) += pm_slowclock.o
101obj-$(CONFIG_CPU_IDLE) += cpuidle.o
102 101
103ifeq ($(CONFIG_PM_DEBUG),y) 102ifeq ($(CONFIG_PM_DEBUG),y)
104CFLAGS_pm.o += -DDEBUG 103CFLAGS_pm.o += -DDEBUG
diff --git a/arch/arm/mach-at91/cpuidle.c b/arch/arm/mach-at91/cpuidle.c
deleted file mode 100644
index a0774370c6bc..000000000000
--- a/arch/arm/mach-at91/cpuidle.c
+++ /dev/null
@@ -1,69 +0,0 @@
1/*
2 * based on arch/arm/mach-kirkwood/cpuidle.c
3 *
4 * CPU idle support for AT91 SoC
5 *
6 * This file is licensed under the terms of the GNU General Public
7 * License version 2. This program is licensed "as is" without any
8 * warranty of any kind, whether express or implied.
9 *
10 * The cpu idle uses wait-for-interrupt and RAM self refresh in order
11 * to implement two idle states -
12 * #1 wait-for-interrupt
13 * #2 wait-for-interrupt and RAM self refresh
14 */
15
16#include <linux/kernel.h>
17#include <linux/init.h>
18#include <linux/platform_device.h>
19#include <linux/cpuidle.h>
20#include <linux/io.h>
21#include <linux/export.h>
22#include <asm/proc-fns.h>
23#include <asm/cpuidle.h>
24
25#define AT91_MAX_STATES 2
26
27static void (*at91_standby)(void);
28
29/* Actual code that puts the SoC in different idle states */
30static int at91_enter_idle(struct cpuidle_device *dev,
31 struct cpuidle_driver *drv,
32 int index)
33{
34 at91_standby();
35 return index;
36}
37
38static struct cpuidle_driver at91_idle_driver = {
39 .name = "at91_idle",
40 .owner = THIS_MODULE,
41 .states[0] = ARM_CPUIDLE_WFI_STATE,
42 .states[1] = {
43 .enter = at91_enter_idle,
44 .exit_latency = 10,
45 .target_residency = 10000,
46 .flags = CPUIDLE_FLAG_TIME_VALID,
47 .name = "RAM_SR",
48 .desc = "WFI and DDR Self Refresh",
49 },
50 .state_count = AT91_MAX_STATES,
51};
52
53/* Initialize CPU idle by registering the idle states */
54static int at91_cpuidle_probe(struct platform_device *dev)
55{
56 at91_standby = (void *)(dev->dev.platform_data);
57
58 return cpuidle_register(&at91_idle_driver, NULL);
59}
60
61static struct platform_driver at91_cpuidle_driver = {
62 .driver = {
63 .name = "cpuidle-at91",
64 .owner = THIS_MODULE,
65 },
66 .probe = at91_cpuidle_probe,
67};
68
69module_platform_driver(at91_cpuidle_driver);