@@ -78,6 +78,12 @@ static bool spcn_cmd_complete = true; /* SPCN command complete */
static u32 last_spcn_cmd;
static int replay = 0;
+/*
+ * FSP controls System Attention Indicator. We just need to keep
+ * track of the status so that we can serve request from Linux.
+ */
+static struct sai_data sai_data;
+
/* Forward declaration */
static void fsp_read_leds_data_complete(struct fsp_msg *msg);
static int process_led_state_change(void);
@@ -1274,6 +1280,53 @@ success:
return rc;
}
+/* Get LED node from device tree */
+static struct dt_node *dt_get_led_node(void)
+{
+ struct dt_node *pled;
+
+ if (!opal_node) {
+ prlog(PR_WARNING, PREFIX
+ "OPAL parent device node not available\n");
+ return NULL;
+ }
+
+ pled = dt_find_by_path(opal_node, DT_PROPERTY_LED_NODE);
+ if (!pled)
+ prlog(PR_WARNING, PREFIX
+ "Parent device node not available\n");
+
+ return pled;
+}
+
+/* Get System attention indicator location code from device tree */
+static void dt_get_sai_loc_code(void)
+{
+ struct dt_node *pled, *child;
+ const char *led_type = NULL;
+
+ memset(sai_data.loc_code, 0, LOC_CODE_SIZE);
+
+ pled = dt_get_led_node();
+ if (!pled)
+ return;
+
+ list_for_each(&pled->children, child, list) {
+ led_type = dt_prop_get(child, DT_PROPERTY_LED_TYPE);
+ if (!led_type)
+ continue;
+
+ if (strcmp(led_type, LED_TYPE_ATTENTION))
+ continue;
+
+ memcpy(sai_data.loc_code, child->name, LOC_CODE_SIZE);
+
+ prlog(PR_TRACE, PREFIX "SAI Location code = %s\n",
+ sai_data.loc_code);
+ return;
+ }
+}
+
/*
* create_led_device_node
*
@@ -1302,19 +1355,10 @@ void create_led_device_nodes(void)
return;
}
- if (!opal_node) {
- prlog(PR_WARNING, PREFIX
- "OPAL parent device node not available\n");
- return;
- }
-
/* Get LED node */
- pled = dt_find_by_path(opal_node, DT_PROPERTY_LED_NODE);
- if (!pled) {
- prlog(PR_WARNING, PREFIX
- "Parent device node not available\n");
+ pled = dt_get_led_node();
+ if (!pled)
return;
- }
dt_add_property_strings(pled, "compatible", DT_PROPERTY_LED_COMPATIBLE);
@@ -1670,6 +1714,9 @@ void fsp_led_init(void)
fsp_leds_query_spcn();
prlog(PR_TRACE, PREFIX "Init completed\n");
+ /* Get System attention indicator state */
+ dt_get_sai_loc_code();
+
/* Handle FSP initiated async LED commands */
fsp_register_client(&fsp_indicator_client, FSP_MCLASS_INDICATOR);
prlog(PR_TRACE, PREFIX "FSP async command client registered\n");
@@ -126,6 +126,12 @@ struct led_set_cmd {
struct list_node link;
};
+/* System Attention Indicator */
+struct sai_data {
+ uint8_t state;
+ char loc_code[LOC_CODE_SIZE];
+};
+
/* LED commands and state */
#define LED_COMMAND_FAULT 1
#define LED_COMMAND_IDENTIFY 0
SAI information is available in device tree. This patch parses device tree to get SAI location code information. Signed-off-by: Vasant Hegde <hegdevasant@linux.vnet.ibm.com> --- hw/fsp/fsp-leds.c | 69 ++++++++++++++++++++++++++++++++++++++++++++-------- include/fsp-leds.h | 6 +++++ 2 files changed, 64 insertions(+), 11 deletions(-)