cpuidle: mvebu: rename the driver from armada-370-xp to mvebu-v7

This driver will be able to manage the cpuidle for more SoCs than just
Armada 370 and XP. It will also support Armada 38x and potentially
other SoC of the Marvell Armada EBU family. To take this into account,
this patch renames the driver and its symbols.

It also changes the driver name from cpuidle-armada-370-xp to
cpuidle-armada-xp, because separate platform drivers will be
registered for the other SoC types. This change must be done
simultaneously in the cpuidle driver and in the PMSU code in order to
remain bisectable.

Signed-off-by: Gregory CLEMENT <gregory.clement@free-electrons.com>
Signed-off-by: Thomas Petazzoni <thomas.petazzoni@free-electrons.com>
Acked-by: Daniel Lezcano <daniel.lezcano@linaro.org>
Link: https://lkml.kernel.org/r/1406120453-29291-12-git-send-email-thomas.petazzoni@free-electrons.com
Signed-off-by: Jason Cooper <jason@lakedaemon.net>

arch/arm/mach-mvebu/pmsu.c

@@ -76,7 +76,7 @@ extern void armada_370_xp_cpu_resume(void);
 static void *mvebu_cpu_resume;
 
 static struct platform_device mvebu_v7_cpuidle_device = {
-	.name = "cpuidle-armada-370-xp",
+	.name = "cpuidle-armada-xp",
 };
 
 static struct of_device_id of_pmsu_table[] = {

drivers/cpuidle/Kconfig.arm

@@ -1,12 +1,6 @@
 #
 # ARM CPU Idle drivers
 #
-config ARM_ARMADA_370_XP_CPUIDLE
-	bool "CPU Idle Driver for Armada 370/XP family processors"
-	depends on ARCH_MVEBU
-	help
-	  Select this to enable cpuidle on Armada 370/XP processors.
-
 config ARM_BIG_LITTLE_CPUIDLE
 	bool "Support for ARM big.LITTLE processors"
 	depends on ARCH_VEXPRESS_TC2_PM
@@ -61,3 +55,9 @@ config ARM_EXYNOS_CPUIDLE
 	depends on ARCH_EXYNOS
 	help
 	  Select this to enable cpuidle for Exynos processors
+
+config ARM_MVEBU_V7_CPUIDLE
+	bool "CPU Idle Driver for mvebu v7 family processors"
+	depends on ARCH_MVEBU
+	help
+	  Select this to enable cpuidle on Armada 370, 38x and XP processors.

drivers/cpuidle/Makefile

@@ -7,7 +7,7 @@ obj-$(CONFIG_ARCH_NEEDS_CPU_IDLE_COUPLED) += coupled.o
 
 ##################################################################################
 # ARM SoC drivers
-obj-$(CONFIG_ARM_ARMADA_370_XP_CPUIDLE) += cpuidle-armada-370-xp.o
+obj-$(CONFIG_ARM_MVEBU_V7_CPUIDLE) += cpuidle-mvebu-v7.o
 obj-$(CONFIG_ARM_BIG_LITTLE_CPUIDLE)	+= cpuidle-big_little.o
 obj-$(CONFIG_ARM_CLPS711X_CPUIDLE)	+= cpuidle-clps711x.o
 obj-$(CONFIG_ARM_HIGHBANK_CPUIDLE)	+= cpuidle-calxeda.o

drivers/cpuidle/cpuidle-armada-370-xp.c → drivers/cpuidle/cpuidle-mvebu-v7.c

@@ -21,12 +21,11 @@
 #include <linux/platform_device.h>
 #include <asm/cpuidle.h>
 
-#define ARMADA_370_XP_MAX_STATES	3
-#define ARMADA_370_XP_FLAG_DEEP_IDLE	0x10000
+#define MVEBU_V7_FLAG_DEEP_IDLE	0x10000
 
-static int (*armada_370_xp_cpu_suspend)(int);
+static int (*mvebu_v7_cpu_suspend)(int);
 
-static int armada_370_xp_enter_idle(struct cpuidle_device *dev,
+static int mvebu_v7_enter_idle(struct cpuidle_device *dev,
 				struct cpuidle_driver *drv,
 				int index)
 {
@@ -34,10 +33,10 @@ static int armada_370_xp_enter_idle(struct cpuidle_device *dev,
 	bool deepidle = false;
 	cpu_pm_enter();
 
-	if (drv->states[index].flags & ARMADA_370_XP_FLAG_DEEP_IDLE)
+	if (drv->states[index].flags & MVEBU_V7_FLAG_DEEP_IDLE)
 		deepidle = true;
 
-	ret = armada_370_xp_cpu_suspend(deepidle);
+	ret = mvebu_v7_cpu_suspend(deepidle);
 	if (ret)
 		return ret;
 
@@ -46,11 +45,11 @@ static int armada_370_xp_enter_idle(struct cpuidle_device *dev,
 	return index;
 }
 
-static struct cpuidle_driver armada_370_xp_idle_driver = {
-	.name			= "armada_370_xp_idle",
+static struct cpuidle_driver armadaxp_idle_driver = {
+	.name			= "armada_xp_idle",
 	.states[0]		= ARM_CPUIDLE_WFI_STATE,
 	.states[1]		= {
-		.enter			= armada_370_xp_enter_idle,
+		.enter			= mvebu_v7_enter_idle,
 		.exit_latency		= 10,
 		.power_usage		= 50,
 		.target_residency	= 100,
@@ -59,35 +58,35 @@ static struct cpuidle_driver armada_370_xp_idle_driver = {
 		.desc			= "CPU power down",
 	},
 	.states[2]		= {
-		.enter			= armada_370_xp_enter_idle,
+		.enter			= mvebu_v7_enter_idle,
 		.exit_latency		= 100,
 		.power_usage		= 5,
 		.target_residency	= 1000,
 		.flags			= CPUIDLE_FLAG_TIME_VALID |
-						ARMADA_370_XP_FLAG_DEEP_IDLE,
+						MVEBU_V7_FLAG_DEEP_IDLE,
 		.name			= "MV CPU DEEP IDLE",
 		.desc			= "CPU and L2 Fabric power down",
 	},
-	.state_count = ARMADA_370_XP_MAX_STATES,
+	.state_count = 3,
 };
 
-static int armada_370_xp_cpuidle_probe(struct platform_device *pdev)
+static int mvebu_v7_cpuidle_probe(struct platform_device *pdev)
 {
 
-	armada_370_xp_cpu_suspend = (void *)(pdev->dev.platform_data);
-	return cpuidle_register(&armada_370_xp_idle_driver, NULL);
+	mvebu_v7_cpu_suspend = pdev->dev.platform_data;
+	return cpuidle_register(&armadaxp_idle_driver, NULL);
 }
 
-static struct platform_driver armada_370_xp_cpuidle_plat_driver = {
+static struct platform_driver armadaxp_cpuidle_plat_driver = {
 	.driver = {
-		.name = "cpuidle-armada-370-xp",
+		.name = "cpuidle-armada-xp",
 		.owner = THIS_MODULE,
 	},
-	.probe = armada_370_xp_cpuidle_probe,
+	.probe = mvebu_v7_cpuidle_probe,
 };
 
-module_platform_driver(armada_370_xp_cpuidle_plat_driver);
+module_platform_driver(armadaxp_cpuidle_plat_driver);
 
 MODULE_AUTHOR("Gregory CLEMENT <gregory.clement@free-electrons.com>");
-MODULE_DESCRIPTION("Armada 370/XP cpu idle driver");
+MODULE_DESCRIPTION("Marvell EBU v7 cpuidle driver");
 MODULE_LICENSE("GPL");