From: Anshuman Khandual <khand...@linux.vnet.ibm.com>
This patch registers the following two new OPAL interfaces calls
for the platform LED subsystem. With the help of these new OPAL calls,
the kernel will be able to get or set the state of various individual
LEDs on the system at any given location code which is passed through
the LED specific device tree nodes.
(1) OPAL_LEDS_GET_INDICATOR opal_leds_get_ind
(2) OPAL_LEDS_SET_INDICATOR opal_leds_set_ind
Signed-off-by: Anshuman Khandual <khand...@linux.vnet.ibm.com>
Signed-off-by: Vasant Hegde <hegdevas...@linux.vnet.ibm.com>
Acked-by: Stewart Smith <stew...@linux.vnet.ibm.com>
Tested-by: Stewart Smith <stew...@linux.vnet.ibm.com>
---
Changes in v4:
- Updated macros to reflect platform.
arch/powerpc/include/asm/opal-api.h | 29 +++++++++++++++++++++++-
arch/powerpc/include/asm/opal.h | 5 ++++
arch/powerpc/platforms/powernv/opal-wrappers.S | 2 ++
3 files changed, 35 insertions(+), 1 deletion(-)
diff --git a/arch/powerpc/include/asm/opal-api.h
b/arch/powerpc/include/asm/opal-api.h
index 0321a90..ff85397 100644
--- a/arch/powerpc/include/asm/opal-api.h
+++ b/arch/powerpc/include/asm/opal-api.h
@@ -153,7 +153,9 @@
#define OPAL_FLASH_READ 110
#define OPAL_FLASH_WRITE 111
#define OPAL_FLASH_ERASE 112
-#define OPAL_LAST 112
+#define OPAL_LEDS_GET_INDICATOR 114
+#define OPAL_LEDS_SET_INDICATOR 115
+#define OPAL_LAST 115
/* Device tree flags */
@@ -730,6 +732,31 @@ struct opal_i2c_request {
__be64 buffer_ra; /* Buffer real address */
};
+/* LED Mode */
+#define POWERNV_LED_MODE_LIGHT_PATH "lightpath"
+#define POWERNV_LED_MODE_GUIDING_LIGHT "guidinglight"
+
+/* LED type */
+#define POWERNV_LED_TYPE_IDENTIFY "identify"
+#define POWERNV_LED_TYPE_FAULT "fault"
+#define POWERNV_LED_TYPE_ATTENTION "attention"
+
+/* LED location */
+#define POWERNV_LED_LOC_ENCLOSURE "enclosure"
+#define POWERNV_LED_LOC_DESCENDENT "descendent"
+
+enum OpalSlotLedType {
+ OPAL_SLOT_LED_TYPE_ID = 0, /* IDENTIFY LED */
+ OPAL_SLOT_LED_TYPE_FAULT = 1, /* FAULT LED */
+ OPAL_SLOT_LED_TYPE_ATTN = 2, /* System Attention LED */
+ OPAL_SLOT_LED_TYPE_MAX = 3
+};
+
+enum OpalSlotLedState {
+ OPAL_SLOT_LED_STATE_OFF = 0, /* LED is OFF */
+ OPAL_SLOT_LED_STATE_ON = 1 /* LED is ON */
+};
+
#endif /* __ASSEMBLY__ */
#endif /* __OPAL_API_H */
diff --git a/arch/powerpc/include/asm/opal.h b/arch/powerpc/include/asm/opal.h
index 042af1a..e06dc7e 100644
--- a/arch/powerpc/include/asm/opal.h
+++ b/arch/powerpc/include/asm/opal.h
@@ -193,6 +193,11 @@ int64_t opal_ipmi_recv(uint64_t interface, struct
opal_ipmi_msg *msg,
uint64_t *msg_len);
int64_t opal_i2c_request(uint64_t async_token, uint32_t bus_id,
struct opal_i2c_request *oreq);
+int64_t opal_leds_get_ind(char *loc_code, u64 *led_mask,
+ u64 *led_value, u64 *max_led_type);
+int64_t opal_leds_set_ind(uint64_t token, char *loc_code, const u64 led_mask,
+ const u64 led_value, u64 *max_led_type);
+
int64_t opal_flash_read(uint64_t id, uint64_t offset, uint64_t buf,
uint64_t size, uint64_t token);
diff --git a/arch/powerpc/platforms/powernv/opal-wrappers.S
b/arch/powerpc/platforms/powernv/opal-wrappers.S
index 4e74037..20d4da4 100644
--- a/arch/powerpc/platforms/powernv/opal-wrappers.S
+++ b/arch/powerpc/platforms/powernv/opal-wrappers.S
@@ -295,3 +295,5 @@ OPAL_CALL(opal_i2c_request,
OPAL_I2C_REQUEST);
OPAL_CALL(opal_flash_read, OPAL_FLASH_READ);
OPAL_CALL(opal_flash_write, OPAL_FLASH_WRITE);
OPAL_CALL(opal_flash_erase, OPAL_FLASH_ERASE);
+OPAL_CALL(opal_leds_get_ind, OPAL_LEDS_GET_INDICATOR);
+OPAL_CALL(opal_leds_set_ind, OPAL_LEDS_SET_INDICATOR);
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