Commit d3b04aab authored by Dennis YC Hsieh's avatar Dennis YC Hsieh Committed by Matthias Brugger
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soc: mediatek: cmdq: add read_s function 



Add read_s function in cmdq helper functions which support read value from
register or dma physical address into gce internal register.

Signed-off-by: default avatarDennis YC Hsieh <dennis-yc.hsieh@mediatek.com>
Link: https://lore.kernel.org/r/1594136714-11650-5-git-send-email-dennis-yc.hsieh@mediatek.com


Signed-off-by: default avatarMatthias Brugger <matthias.bgg@gmail.com>
parent 11c7842d

drivers/soc/mediatek/mtk-cmdq-helper.c

+15 −0
Original line number Diff line number Diff line
@@ -227,6 +227,21 @@ int cmdq_pkt_write_mask(struct cmdq_pkt *pkt, u8 subsys, 
}

EXPORT_SYMBOL(cmdq_pkt_write_mask);



int cmdq_pkt_read_s(struct cmdq_pkt *pkt, u16 high_addr_reg_idx, u16 addr_low,

		    u16 reg_idx)

{

	struct cmdq_instruction inst = {};



	inst.op = CMDQ_CODE_READ_S;

	inst.dst_t = CMDQ_REG_TYPE;

	inst.sop = high_addr_reg_idx;

	inst.reg_dst = reg_idx;

	inst.src_reg = addr_low;



	return cmdq_pkt_append_command(pkt, inst);

}

EXPORT_SYMBOL(cmdq_pkt_read_s);



int cmdq_pkt_write_s(struct cmdq_pkt *pkt, u16 high_addr_reg_idx,

		     u16 addr_low, u16 src_reg_idx)

{

include/linux/mailbox/mtk-cmdq-mailbox.h

+1 −0
Original line number Diff line number Diff line
@@ -60,6 +60,7 @@ enum cmdq_code { 
	CMDQ_CODE_JUMP = 0x10,

	CMDQ_CODE_WFE = 0x20,

	CMDQ_CODE_EOC = 0x40,

	CMDQ_CODE_READ_S = 0x80,

	CMDQ_CODE_WRITE_S = 0x90,

	CMDQ_CODE_WRITE_S_MASK = 0x91,

	CMDQ_CODE_LOGIC = 0xa0,

include/linux/soc/mediatek/mtk-cmdq.h

+12 −0
Original line number Diff line number Diff line
@@ -104,6 +104,18 @@ int cmdq_pkt_write(struct cmdq_pkt *pkt, u8 subsys, u16 offset, u32 value); 
int cmdq_pkt_write_mask(struct cmdq_pkt *pkt, u8 subsys,

			u16 offset, u32 value, u32 mask);



/*

 * cmdq_pkt_read_s() - append read_s command to the CMDQ packet

 * @pkt:	the CMDQ packet

 * @high_addr_reg_idx:	internal register ID which contains high address of pa

 * @addr_low:	low address of pa

 * @reg_idx:	the CMDQ internal register ID to cache read data

 *

 * Return: 0 for success; else the error code is returned

 */

int cmdq_pkt_read_s(struct cmdq_pkt *pkt, u16 high_addr_reg_idx, u16 addr_low,

		    u16 reg_idx);



/**

 * cmdq_pkt_write_s() - append write_s command to the CMDQ packet

 * @pkt:	the CMDQ packet

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