soc: mediatek: cmdq: add set event function

Add set event function in cmdq helper functions to set specific event.

Signed-off-by: Dennis YC Hsieh <dennis-yc.hsieh@mediatek.com>
Link: https://lore.kernel.org/r/1592749115-24158-12-git-send-email-dennis-yc.hsieh@mediatek.com
Signed-off-by: Matthias Brugger <matthias.bgg@gmail.com>

diff --git a/drivers/soc/mediatek/mtk-cmdq-helper.c b/drivers/soc/mediatek/mtk-cmdq-helper.c
index 2eda03f..dc644cf 100644 (file)
--- a/drivers/soc/mediatek/mtk-cmdq-helper.c
+++ b/drivers/soc/mediatek/mtk-cmdq-helper.c
@@ -253,6 +253,21 @@ int cmdq_pkt_clear_event(struct cmdq_pkt *pkt, u16 event)
 }
 EXPORT_SYMBOL(cmdq_pkt_clear_event);
 
+int cmdq_pkt_set_event(struct cmdq_pkt *pkt, u16 event)
+{
+       struct cmdq_instruction inst = {};
+
+       if (event >= CMDQ_MAX_EVENT)
+               return -EINVAL;
+
+       inst.op = CMDQ_CODE_WFE;
+       inst.value = CMDQ_WFE_UPDATE | CMDQ_WFE_UPDATE_VALUE;
+       inst.event = event;
+
+       return cmdq_pkt_append_command(pkt, inst);
+}
+EXPORT_SYMBOL(cmdq_pkt_set_event);
+
 int cmdq_pkt_poll(struct cmdq_pkt *pkt, u8 subsys,
                  u16 offset, u32 value)
 {

diff --git a/include/linux/mailbox/mtk-cmdq-mailbox.h b/include/linux/mailbox/mtk-cmdq-mailbox.h
index 70b740a..a96e8c2 100644 (file)
--- a/include/linux/mailbox/mtk-cmdq-mailbox.h
+++ b/include/linux/mailbox/mtk-cmdq-mailbox.h
@@ -17,6 +17,7 @@
 #define CMDQ_JUMP_PASS                 CMDQ_INST_SIZE
 
 #define CMDQ_WFE_UPDATE                        BIT(31)
+#define CMDQ_WFE_UPDATE_VALUE          BIT(16)
 #define CMDQ_WFE_WAIT                  BIT(15)
 #define CMDQ_WFE_WAIT_VALUE            0x1
 

diff --git a/include/linux/soc/mediatek/mtk-cmdq.h b/include/linux/soc/mediatek/mtk-cmdq.h
index c331255..2249eca 100644 (file)
--- a/include/linux/soc/mediatek/mtk-cmdq.h
+++ b/include/linux/soc/mediatek/mtk-cmdq.h
@@ -121,6 +121,15 @@ int cmdq_pkt_wfe(struct cmdq_pkt *pkt, u16 event);
 int cmdq_pkt_clear_event(struct cmdq_pkt *pkt, u16 event);
 
 /**
+ * cmdq_pkt_set_event() - append set event command to the CMDQ packet
+ * @pkt:       the CMDQ packet
+ * @event:     the desired event to be set
+ *
+ * Return: 0 for success; else the error code is returned
+ */
+int cmdq_pkt_set_event(struct cmdq_pkt *pkt, u16 event);
+
+/**
  * cmdq_pkt_poll() - Append polling command to the CMDQ packet, ask GCE to
  *                  execute an instruction that wait for a specified
  *                  hardware register to check for the value w/o mask.