On 02/03/15 11:29, Suzuki K. Poulose wrote:
From: "Suzuki K. Poulose" <suzuki.poulose@xxxxxxx>
This patch separates the PMU driver code from the low level
CCI driver code.
Introduces config options for both.
ARM_CCI400_PORT_CTRL - controls the low level driver code for
CCI400 ports.
ARM_CCI400_PMU - controls the PMU driver code
ARM_CCI400_COMMON - Common defintions for CCI400
Also the ARM_CCI400_PORT_CTRL cannot be enabled by user. This
should be selected by platforms which need it.
This patch also changes:
ARM_CCI - common code for probing the CCI devices. This can be
used for adding support for newer CCI versions(e.g, CCI-500).
Signed-off-by: Suzuki K. Poulose <suzuki.poulose@xxxxxxx>
---
arch/arm/mach-exynos/Kconfig | 2 +-
arch/arm/mach-vexpress/Kconfig | 4 ++--
drivers/bus/Kconfig | 27 +++++++++++++++++++++++----
drivers/bus/arm-cci.c | 24 ++++++++++++++++++++----
include/linux/arm-cci.h | 7 ++++++-
5 files changed, 52 insertions(+), 12 deletions(-)
[...]
diff --git a/drivers/bus/Kconfig b/drivers/bus/Kconfig
index b99729e..bdc189f 100644
--- a/drivers/bus/Kconfig
+++ b/drivers/bus/Kconfig
@@ -43,12 +43,31 @@ config OMAP_INTERCONNECT
help
Driver to enable OMAP interconnect error handling driver.
-config ARM_CCI
- bool "ARM CCI driver support"
+config ARM_CCI400_PORT_CTRL
+ bool
depends on ARM && OF && CPU_V7
+ select ARM_CCI400_COMMON
+ help
+ Low level power management driver for CCI400 cache coherent
+ interconnect for ARM platforms.
+
+config ARM_CCI400_PMU
+ bool "ARM CCI400 PMU support"
+ depends on ARM || ARM64
+ depends on HW_PERF_EVENTS
+ select ARM_CCI400_COMMON
help
- Driver supporting the CCI cache coherent interconnect for ARM
- platforms.
+ Support for PMU events monitoring on the ARM CCI cache coherent
+ interconnect.
+
+ If unsure, say N
Just a query rather than comment. Before this change all platforms
having ARM_CCI and HW_PERF_EVENTS had CCI PMU enabled by default.
With this change, one has to select this option explicitly. I assume
that's fine, else this needs to be default 'y'
Regards,
Sudeep
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