[PATCH V11 3/3] powernv: Add support to clear sensor groups data

2017-08-09 Thread Shilpasri G Bhat 
Adds support for clearing different sensor groups. OCC inband sensor
groups like CSM, Profiler, Job Scheduler can be cleared using this
driver. The min/max of all sensors belonging to these sensor groups
will be cleared.

Signed-off-by: Shilpasri G Bhat 
---
 .../bindings/powerpc/opal/sensor-groups.txt|  27 +++
 arch/powerpc/include/asm/opal-api.h|   1 +
 arch/powerpc/include/asm/opal.h|   2 +
 arch/powerpc/platforms/powernv/Makefile|   2 +-
 .../powerpc/platforms/powernv/opal-sensor-groups.c | 212 +
 arch/powerpc/platforms/powernv/opal-wrappers.S |   1 +
 arch/powerpc/platforms/powernv/opal.c  |   3 +
 7 files changed, 247 insertions(+), 1 deletion(-)
 create mode 100644 
Documentation/devicetree/bindings/powerpc/opal/sensor-groups.txt
 create mode 100644 arch/powerpc/platforms/powernv/opal-sensor-groups.c

diff --git a/Documentation/devicetree/bindings/powerpc/opal/sensor-groups.txt 
b/Documentation/devicetree/bindings/powerpc/opal/sensor-groups.txt
new file mode 100644
index 000..6ad881c
--- /dev/null
+++ b/Documentation/devicetree/bindings/powerpc/opal/sensor-groups.txt
@@ -0,0 +1,27 @@
+IBM OPAL Sensor Groups Binding
+---
+
+Node: /ibm,opal/sensor-groups
+
+Description: Contains sensor groups available in the Powernv P9
+servers. Each child node indicates a sensor group.
+
+- compatible : Should be "ibm,opal-sensor-group"
+
+Each child node contains below properties:
+
+- type : String to indicate the type of sensor-group
+
+- sensor-group-id: Abstract unique identifier provided by firmware of
+  type  which is used for sensor-group
+  operations like clearing the min/max history of all
+  sensors belonging to the group.
+
+- ibm,chip-id : Chip ID
+
+- sensors : Phandle array of child nodes of /ibm,opal/sensor/
+   belonging to this group
+
+- ops : Array of opal-call numbers indicating available operations on
+   sensor groups like clearing min/max, enabling/disabling sensor
+   group.
diff --git a/arch/powerpc/include/asm/opal-api.h 
b/arch/powerpc/include/asm/opal-api.h
index 0cb7d11..450a60b 100644
--- a/arch/powerpc/include/asm/opal-api.h
+++ b/arch/powerpc/include/asm/opal-api.h
@@ -198,6 +198,7 @@
 #define OPAL_SET_POWERCAP  153
 #define OPAL_GET_POWER_SHIFT_RATIO 154
 #define OPAL_SET_POWER_SHIFT_RATIO 155
+#define OPAL_SENSOR_GROUP_CLEAR156
 #define OPAL_PCI_SET_P2P   157
 #define OPAL_LAST  157
 
diff --git a/arch/powerpc/include/asm/opal.h b/arch/powerpc/include/asm/opal.h
index d87ffcb..97ff192 100644
--- a/arch/powerpc/include/asm/opal.h
+++ b/arch/powerpc/include/asm/opal.h
@@ -279,6 +279,7 @@ int64_t opal_imc_counters_init(uint32_t type, uint64_t 
address,
 int opal_set_powercap(u32 handle, int token, u32 pcap);
 int opal_get_power_shift_ratio(u32 handle, int token, u32 *psr);
 int opal_set_power_shift_ratio(u32 handle, int token, u32 psr);
+int opal_sensor_group_clear(u32 group_hndl, int token);
 
 /* Internal functions */
 extern int early_init_dt_scan_opal(unsigned long node, const char *uname,
@@ -359,6 +360,7 @@ static inline int opal_get_async_rc(struct opal_msg msg)
 
 void opal_powercap_init(void);
 void opal_psr_init(void);
+void opal_sensor_groups_init(void);
 
 #endif /* __ASSEMBLY__ */
 
diff --git a/arch/powerpc/platforms/powernv/Makefile 
b/arch/powerpc/platforms/powernv/Makefile
index 674ed1e..177b3d4 100644
--- a/arch/powerpc/platforms/powernv/Makefile
+++ b/arch/powerpc/platforms/powernv/Makefile
@@ -2,7 +2,7 @@ obj-y   += setup.o opal-wrappers.o opal.o 
opal-async.o idle.o
 obj-y  += opal-rtc.o opal-nvram.o opal-lpc.o opal-flash.o
 obj-y  += rng.o opal-elog.o opal-dump.o opal-sysparam.o 
opal-sensor.o
 obj-y  += opal-msglog.o opal-hmi.o opal-power.o opal-irqchip.o
-obj-y  += opal-kmsg.o opal-powercap.o opal-psr.o
+obj-y  += opal-kmsg.o opal-powercap.o opal-psr.o 
opal-sensor-groups.o
 
 obj-$(CONFIG_SMP)  += smp.o subcore.o subcore-asm.o
 obj-$(CONFIG_PCI)  += pci.o pci-ioda.o npu-dma.o
diff --git a/arch/powerpc/platforms/powernv/opal-sensor-groups.c 
b/arch/powerpc/platforms/powernv/opal-sensor-groups.c
new file mode 100644
index 000..7e5a235
--- /dev/null
+++ b/arch/powerpc/platforms/powernv/opal-sensor-groups.c
@@ -0,0 +1,212 @@
+/*
+ * PowerNV OPAL Sensor-groups interface
+ *
+ * Copyright 2017 IBM Corp.
+ *
+ * This program is free software; you can redistribute it and/or
+ * modify it under the terms of the GNU General Public License
+ * as published by the Free Software Foundation; either version
+ * 2 of the License, or (at your option) any later version.
+ */
+
+#define pr_fmt(fmt) "opal-sensor-groups: " fmt
+
+#include

[PATCH V11 3/3] powernv: Add support to clear sensor groups data

2017-08-09 Thread Shilpasri G Bhat 
Adds support for clearing different sensor groups. OCC inband sensor
groups like CSM, Profiler, Job Scheduler can be cleared using this
driver. The min/max of all sensors belonging to these sensor groups
will be cleared.

Signed-off-by: Shilpasri G Bhat 
---
 .../bindings/powerpc/opal/sensor-groups.txt|  27 +++
 arch/powerpc/include/asm/opal-api.h|   1 +
 arch/powerpc/include/asm/opal.h|   2 +
 arch/powerpc/platforms/powernv/Makefile|   2 +-
 .../powerpc/platforms/powernv/opal-sensor-groups.c | 212 +
 arch/powerpc/platforms/powernv/opal-wrappers.S |   1 +
 arch/powerpc/platforms/powernv/opal.c  |   3 +
 7 files changed, 247 insertions(+), 1 deletion(-)
 create mode 100644 
Documentation/devicetree/bindings/powerpc/opal/sensor-groups.txt
 create mode 100644 arch/powerpc/platforms/powernv/opal-sensor-groups.c

diff --git a/Documentation/devicetree/bindings/powerpc/opal/sensor-groups.txt 
b/Documentation/devicetree/bindings/powerpc/opal/sensor-groups.txt
new file mode 100644
index 000..6ad881c
--- /dev/null
+++ b/Documentation/devicetree/bindings/powerpc/opal/sensor-groups.txt
@@ -0,0 +1,27 @@
+IBM OPAL Sensor Groups Binding
+---
+
+Node: /ibm,opal/sensor-groups
+
+Description: Contains sensor groups available in the Powernv P9
+servers. Each child node indicates a sensor group.
+
+- compatible : Should be "ibm,opal-sensor-group"
+
+Each child node contains below properties:
+
+- type : String to indicate the type of sensor-group
+
+- sensor-group-id: Abstract unique identifier provided by firmware of
+  type  which is used for sensor-group
+  operations like clearing the min/max history of all
+  sensors belonging to the group.
+
+- ibm,chip-id : Chip ID
+
+- sensors : Phandle array of child nodes of /ibm,opal/sensor/
+   belonging to this group
+
+- ops : Array of opal-call numbers indicating available operations on
+   sensor groups like clearing min/max, enabling/disabling sensor
+   group.
diff --git a/arch/powerpc/include/asm/opal-api.h 
b/arch/powerpc/include/asm/opal-api.h
index 0cb7d11..450a60b 100644
--- a/arch/powerpc/include/asm/opal-api.h
+++ b/arch/powerpc/include/asm/opal-api.h
@@ -198,6 +198,7 @@
 #define OPAL_SET_POWERCAP  153
 #define OPAL_GET_POWER_SHIFT_RATIO 154
 #define OPAL_SET_POWER_SHIFT_RATIO 155
+#define OPAL_SENSOR_GROUP_CLEAR156
 #define OPAL_PCI_SET_P2P   157
 #define OPAL_LAST  157
 
diff --git a/arch/powerpc/include/asm/opal.h b/arch/powerpc/include/asm/opal.h
index d87ffcb..97ff192 100644
--- a/arch/powerpc/include/asm/opal.h
+++ b/arch/powerpc/include/asm/opal.h
@@ -279,6 +279,7 @@ int64_t opal_imc_counters_init(uint32_t type, uint64_t 
address,
 int opal_set_powercap(u32 handle, int token, u32 pcap);
 int opal_get_power_shift_ratio(u32 handle, int token, u32 *psr);
 int opal_set_power_shift_ratio(u32 handle, int token, u32 psr);
+int opal_sensor_group_clear(u32 group_hndl, int token);
 
 /* Internal functions */
 extern int early_init_dt_scan_opal(unsigned long node, const char *uname,
@@ -359,6 +360,7 @@ static inline int opal_get_async_rc(struct opal_msg msg)
 
 void opal_powercap_init(void);
 void opal_psr_init(void);
+void opal_sensor_groups_init(void);
 
 #endif /* __ASSEMBLY__ */
 
diff --git a/arch/powerpc/platforms/powernv/Makefile 
b/arch/powerpc/platforms/powernv/Makefile
index 674ed1e..177b3d4 100644
--- a/arch/powerpc/platforms/powernv/Makefile
+++ b/arch/powerpc/platforms/powernv/Makefile
@@ -2,7 +2,7 @@ obj-y   += setup.o opal-wrappers.o opal.o 
opal-async.o idle.o
 obj-y  += opal-rtc.o opal-nvram.o opal-lpc.o opal-flash.o
 obj-y  += rng.o opal-elog.o opal-dump.o opal-sysparam.o 
opal-sensor.o
 obj-y  += opal-msglog.o opal-hmi.o opal-power.o opal-irqchip.o
-obj-y  += opal-kmsg.o opal-powercap.o opal-psr.o
+obj-y  += opal-kmsg.o opal-powercap.o opal-psr.o 
opal-sensor-groups.o
 
 obj-$(CONFIG_SMP)  += smp.o subcore.o subcore-asm.o
 obj-$(CONFIG_PCI)  += pci.o pci-ioda.o npu-dma.o
diff --git a/arch/powerpc/platforms/powernv/opal-sensor-groups.c 
b/arch/powerpc/platforms/powernv/opal-sensor-groups.c
new file mode 100644
index 000..7e5a235
--- /dev/null
+++ b/arch/powerpc/platforms/powernv/opal-sensor-groups.c
@@ -0,0 +1,212 @@
+/*
+ * PowerNV OPAL Sensor-groups interface
+ *
+ * Copyright 2017 IBM Corp.
+ *
+ * This program is free software; you can redistribute it and/or
+ * modify it under the terms of the GNU General Public License
+ * as published by the Free Software Foundation; either version
+ * 2 of the License, or (at your option) any later version.
+ */
+
+#define pr_fmt(fmt) "opal-sensor-groups: " fmt
+
+#include 
+#include 
+#include 
+