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soc: mediatek: cmdq: add polling function

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add polling function in cmdq helper functions

Signed-off-by: Bibby Hsieh <bibby.hsieh@mediatek.com>
Reviewed-by: CK Hu <ck.hu@mediatek.com>
Signed-off-by: Matthias Brugger <matthias.bgg@gmail.com>
This commit is contained in:
Bibby Hsieh
2019-11-21 09:54:08 +08:00
committed by Matthias Brugger
parent 5c8b718c5a
commit b2ff2356bf
3 changed files with 69 additions and 0 deletions
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32
include/linux/soc/mediatek/mtk-cmdq.h
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@@ -99,6 +99,38 @@ int cmdq_pkt_wfe(struct cmdq_pkt *pkt, u16 event);
*/
int cmdq_pkt_clear_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.
* All GCE hardware threads will be blocked by this
* instruction.
* @pkt: the CMDQ packet
* @subsys: the CMDQ sub system code
* @offset: register offset from CMDQ sub system
* @value: the specified target register value
*
* Return: 0 for success; else the error code is returned
*/
int cmdq_pkt_poll(struct cmdq_pkt *pkt, u8 subsys,
u16 offset, u32 value);
/**
* cmdq_pkt_poll_mask() - 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/ mask.
* All GCE hardware threads will be blocked by this
* instruction.
* @pkt: the CMDQ packet
* @subsys: the CMDQ sub system code
* @offset: register offset from CMDQ sub system
* @value: the specified target register value
* @mask: the specified target register mask
*
* Return: 0 for success; else the error code is returned
*/
int cmdq_pkt_poll_mask(struct cmdq_pkt *pkt, u8 subsys,
u16 offset, u32 value, u32 mask);
/**
* cmdq_pkt_flush_async() - trigger CMDQ to asynchronously execute the CMDQ
* packet and call back at the end of done packet