[PATCH v2 1/5] cpuidle: psci: Split into two separate build objects

[Ulf Hansson]

The combined build object for the PSCI cpuidle driver and the PSCI PM
domain, is a bit messy. Therefore let's split it up by adding a new Kconfig
ARM_PSCI_CPUIDLE_DOMAIN and convert into two separate objects.

Reviewed-by: Lina Iyer <ilina at codeaurora.org>
Reviewed-by: Sudeep Holla <sudeep.holla at arm.com>
Signed-off-by: Ulf Hansson <ulf.hansson at linaro.org>
---
 drivers/cpuidle/Kconfig.arm    | 10 ++++++++++
 drivers/cpuidle/Makefile       |  5 ++---
 drivers/cpuidle/cpuidle-psci.h |  2 +-
 3 files changed, 13 insertions(+), 4 deletions(-)

diff --git a/drivers/cpuidle/Kconfig.arm b/drivers/cpuidle/Kconfig.arm
index 51a7e89085c0..0844fadc4be8 100644
--- a/drivers/cpuidle/Kconfig.arm
+++ b/drivers/cpuidle/Kconfig.arm
@@ -23,6 +23,16 @@ config ARM_PSCI_CPUIDLE
 	  It provides an idle driver that is capable of detecting and
 	  managing idle states through the PSCI firmware interface.
 
+config ARM_PSCI_CPUIDLE_DOMAIN
+	bool "PSCI CPU idle Domain"
+	depends on ARM_PSCI_CPUIDLE
+	depends on PM_GENERIC_DOMAINS_OF
+	default y
+	help
+	  Select this to enable the PSCI based CPUidle driver to use PM domains,
+	  which is needed to support the hierarchical DT based layout of the
+	  idle states.
+
 config ARM_BIG_LITTLE_CPUIDLE
 	bool "Support for ARM big.LITTLE processors"
 	depends on ARCH_VEXPRESS_TC2_PM || ARCH_EXYNOS || COMPILE_TEST
diff --git a/drivers/cpuidle/Makefile b/drivers/cpuidle/Makefile
index f07800cbb43f..26bbc5e74123 100644
--- a/drivers/cpuidle/Makefile
+++ b/drivers/cpuidle/Makefile
@@ -21,9 +21,8 @@ obj-$(CONFIG_ARM_U8500_CPUIDLE)         += cpuidle-ux500.o
 obj-$(CONFIG_ARM_AT91_CPUIDLE)          += cpuidle-at91.o
 obj-$(CONFIG_ARM_EXYNOS_CPUIDLE)        += cpuidle-exynos.o
 obj-$(CONFIG_ARM_CPUIDLE)		+= cpuidle-arm.o
-obj-$(CONFIG_ARM_PSCI_CPUIDLE)		+= cpuidle_psci.o
-cpuidle_psci-y				:= cpuidle-psci.o
-cpuidle_psci-$(CONFIG_PM_GENERIC_DOMAINS_OF) += cpuidle-psci-domain.o
+obj-$(CONFIG_ARM_PSCI_CPUIDLE)		+= cpuidle-psci.o
+obj-$(CONFIG_ARM_PSCI_CPUIDLE_DOMAIN)	+= cpuidle-psci-domain.o
 obj-$(CONFIG_ARM_TEGRA_CPUIDLE)		+= cpuidle-tegra.o
 obj-$(CONFIG_ARM_QCOM_SPM_CPUIDLE)	+= cpuidle-qcom-spm.o
 
diff --git a/drivers/cpuidle/cpuidle-psci.h b/drivers/cpuidle/cpuidle-psci.h
index 7299a04dd467..ac8170684d4f 100644
--- a/drivers/cpuidle/cpuidle-psci.h
+++ b/drivers/cpuidle/cpuidle-psci.h
@@ -8,7 +8,7 @@ struct device_node;
 void psci_set_domain_state(u32 state);
 int __init psci_dt_parse_state_node(struct device_node *np, u32 *state);
 
-#ifdef CONFIG_PM_GENERIC_DOMAINS_OF
+#ifdef CONFIG_ARM_PSCI_CPUIDLE_DOMAIN
 struct device __init *psci_dt_attach_cpu(int cpu);
 #else
 static inline struct device __init *psci_dt_attach_cpu(int cpu) { return NULL; }
-- 
2.20.1