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 v2:
- Rebased on top of mpe's next branch.
- Added macro for LED mode etc.
-Vasant
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 e8a6baf..81d2503 100644
--- a/arch/powerpc/include/asm/opal-api.h
+++ b/arch/powerpc/include/asm/opal-api.h
@@ -150,7 +150,9 @@
#define OPAL_IPMI_SEND 107
#define OPAL_IPMI_RECV 108
#define OPAL_I2C_REQUEST 109
-#define OPAL_LAST 109
+#define OPAL_LEDS_GET_INDICATOR 114
+#define OPAL_LEDS_SET_INDICATOR 115
+#define OPAL_LAST 115
/* Device tree flags */
@@ -727,6 +729,31 @@ struct opal_i2c_request {
__be64 buffer_ra; /* Buffer real address */
};
+/* LED Mode */
+#define LED_MODE_LIGHT_PATH "lightpath"
+#define LED_MODE_GUIDING_LIGHT "guidinglight"
+
+/* LED type */
+#define LED_TYPE_IDENTIFY "identify"
+#define LED_TYPE_FAULT "fault"
+#define LED_TYPE_ATTENTION "attention"
+
+/* LED location */
+#define LED_LOC_ENCLOSURE "enclosure"
+#define 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 0ef0fd6..3676a63 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);
+
/* Internal functions */
extern int early_init_dt_scan_opal(unsigned long node, const char *uname,
diff --git a/arch/powerpc/platforms/powernv/opal-wrappers.S
b/arch/powerpc/platforms/powernv/opal-wrappers.S
index b23fe7c..f946f54 100644
--- a/arch/powerpc/platforms/powernv/opal-wrappers.S
+++ b/arch/powerpc/platforms/powernv/opal-wrappers.S
@@ -292,3 +292,5 @@ OPAL_CALL(opal_tpo_read, OPAL_READ_TPO);
OPAL_CALL(opal_ipmi_send, OPAL_IPMI_SEND);
OPAL_CALL(opal_ipmi_recv, OPAL_IPMI_RECV);
OPAL_CALL(opal_i2c_request, OPAL_I2C_REQUEST);
+OPAL_CALL(opal_leds_get_ind, OPAL_LEDS_GET_INDICATOR);
+OPAL_CALL(opal_leds_set_ind, OPAL_LEDS_SET_INDICATOR);
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