On 31/1/2024 6:54 pm, Ilpo Järvinen wrote:
On Mon, 29 Jan 2024, Choong Yong Liang wrote:
From: "David E. Box" <david.e.box@xxxxxxxxxxxxxxx>
- Exports intel_pmc_ipc() for host access to the PMC IPC mailbox
- Add support to use IPC command allows host to access SoC registers
through PMC firmware that are otherwise inaccessible to the host due to
security policies.
Signed-off-by: David E. Box <david.e.box@xxxxxxxxxxxxxxx>
Signed-off-by: Chao Qin <chao.qin@xxxxxxxxx>
Signed-off-by: Choong Yong Liang <yong.liang.choong@xxxxxxxxxxxxxxx>
---
MAINTAINERS | 2 +
arch/x86/Kconfig | 9 +++
arch/x86/platform/intel/Makefile | 1 +
arch/x86/platform/intel/pmc_ipc.c | 75 +++++++++++++++++++
.../linux/platform_data/x86/intel_pmc_ipc.h | 34 +++++++++
5 files changed, 121 insertions(+)
create mode 100644 arch/x86/platform/intel/pmc_ipc.c
create mode 100644 include/linux/platform_data/x86/intel_pmc_ipc.h
diff --git a/MAINTAINERS b/MAINTAINERS
index 8709c7cd3656..441eb921edef 100644
--- a/MAINTAINERS
+++ b/MAINTAINERS
@@ -10973,8 +10973,10 @@ M: Rajneesh Bhardwaj <irenic.rajneesh@xxxxxxxxx>
M: David E Box <david.e.box@xxxxxxxxx>
L: platform-driver-x86@xxxxxxxxxxxxxxx
S: Maintained
+F: arch/x86/platform/intel/pmc_ipc.c
F: Documentation/ABI/testing/sysfs-platform-intel-pmc
F: drivers/platform/x86/intel/pmc/
+F: linux/platform_data/x86/intel_pmc_ipc.h
INTEL PMIC GPIO DRIVERS
M: Andy Shevchenko <andy@xxxxxxxxxx>
diff --git a/arch/x86/Kconfig b/arch/x86/Kconfig
index 5edec175b9bf..bceae28b9381 100644
--- a/arch/x86/Kconfig
+++ b/arch/x86/Kconfig
@@ -666,6 +666,15 @@ config X86_AMD_PLATFORM_DEVICE
I2C and UART depend on COMMON_CLK to set clock. GPIO driver is
implemented under PINCTRL subsystem.
+config INTEL_PMC_IPC
+ tristate "Intel Core SoC Power Management Controller IPC mailbox"
+ depends on ACPI
+ help
+ This option enables sideband register access support for Intel SoC
+ power management controller IPC mailbox.
+
+ If you don't require the option or are in doubt, say N.
+
config IOSF_MBI
tristate "Intel SoC IOSF Sideband support for SoC platforms"
depends on PCI
diff --git a/arch/x86/platform/intel/Makefile b/arch/x86/platform/intel/Makefile
index dbee3b00f9d0..470fc68de6ba 100644
--- a/arch/x86/platform/intel/Makefile
+++ b/arch/x86/platform/intel/Makefile
@@ -1,2 +1,3 @@
# SPDX-License-Identifier: GPL-2.0-only
obj-$(CONFIG_IOSF_MBI) += iosf_mbi.o
+obj-$(CONFIG_INTEL_PMC_IPC) += pmc_ipc.o
\ No newline at end of file
New line missing.
Thank you for letting me know.
I will fix it in the new patch series.
