soc: mediatek: cmdq: add polling function

add polling function in cmdq helper functions

Bibby Hsieh committed 6 years ago

Commit b2ff2351 parent 5c8b7183 files · +69 −0Browse files

Showing the changes to include/linux (2 of 3 files). Show all

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2 files

include/linux/mailbox/mtk-cmdq-mailbox.h +1 −0
include/linux/soc/mediatek/mtk-cmdq.h +32 −0

include/linux/mailbox/mtk-cmdq-mailbox.h+1−0

@@ -55,6 +55,7 @@ · 54 unmodified lines
55	55	enum cmdq_code {
56	56	CMDQ_CODE_MASK = 0x02,
57	57	CMDQ_CODE_WRITE = 0x04,
	58	+ CMDQ_CODE_POLL = 0x08,
58	59	CMDQ_CODE_JUMP = 0x10,
59	60	CMDQ_CODE_WFE = 0x20,
60	61	CMDQ_CODE_EOC = 0x40,

include/linux/soc/mediatek/mtk-cmdq.h+32−0

@@ -99,6 +99,38 @@ int cmdq_pkt_wfe(struct cmdq_pkt *pkt, u16 event); · 98 unmodified lines
99	99	*/
100	100	int cmdq_pkt_clear_event(struct cmdq_pkt *pkt, u16 event);
101	101
	102	+/**
	103	+ * cmdq_pkt_poll() - Append polling command to the CMDQ packet, ask GCE to
	104	+ * execute an instruction that wait for a specified
	105	+ * hardware register to check for the value w/o mask.
	106	+ * All GCE hardware threads will be blocked by this
	107	+ * instruction.
	108	+ * @pkt: the CMDQ packet
	109	+ * @subsys: the CMDQ sub system code
	110	+ * @offset: register offset from CMDQ sub system
	111	+ * @value: the specified target register value
	112	+ *
	113	+ * Return: 0 for success; else the error code is returned
	114	+ */
	115	+int cmdq_pkt_poll(struct cmdq_pkt *pkt, u8 subsys,
	116	+ u16 offset, u32 value);
	117	+
	118	+/**
	119	+ * cmdq_pkt_poll_mask() - Append polling command to the CMDQ packet, ask GCE to
	120	+ * execute an instruction that wait for a specified
	121	+ * hardware register to check for the value w/ mask.
	122	+ * All GCE hardware threads will be blocked by this
	123	+ * instruction.
	124	+ * @pkt: the CMDQ packet
	125	+ * @subsys: the CMDQ sub system code
	126	+ * @offset: register offset from CMDQ sub system
	127	+ * @value: the specified target register value
	128	+ * @mask: the specified target register mask
	129	+ *
	130	+ * Return: 0 for success; else the error code is returned
	131	+ */
	132	+int cmdq_pkt_poll_mask(struct cmdq_pkt *pkt, u8 subsys,
	133	+ u16 offset, u32 value, u32 mask);
102	134	/**
103	135	* cmdq_pkt_flush_async() - trigger CMDQ to asynchronously execute the CMDQ
104	136	* packet and call back at the end of done packet