Commit 11c7842d authored by Dennis YC Hsieh's avatar Dennis YC Hsieh Committed by Matthias Brugger
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soc: mediatek: cmdq: add write_s_mask function 



add write_s_mask function in cmdq helper functions which
writes value contains in internal register to address
with mask and large dma access support.

Signed-off-by: default avatarDennis YC Hsieh <dennis-yc.hsieh@mediatek.com>
Link: https://lore.kernel.org/r/1594136714-11650-4-git-send-email-dennis-yc.hsieh@mediatek.com


Signed-off-by: default avatarMatthias Brugger <matthias.bgg@gmail.com>
parent 5f6e560c

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

+23 −0
Original line number Diff line number Diff line
@@ -242,6 +242,29 @@ int cmdq_pkt_write_s(struct cmdq_pkt *pkt, u16 high_addr_reg_idx, 
}

EXPORT_SYMBOL(cmdq_pkt_write_s);



int cmdq_pkt_write_s_mask(struct cmdq_pkt *pkt, u16 high_addr_reg_idx,

			  u16 addr_low, u16 src_reg_idx, u32 mask)

{

	struct cmdq_instruction inst = {};

	int err;



	inst.op = CMDQ_CODE_MASK;

	inst.mask = ~mask;

	err = cmdq_pkt_append_command(pkt, inst);

	if (err < 0)

		return err;



	inst.mask = 0;

	inst.op = CMDQ_CODE_WRITE_S_MASK;

	inst.src_t = CMDQ_REG_TYPE;

	inst.sop = high_addr_reg_idx;

	inst.offset = addr_low;

	inst.src_reg = src_reg_idx;



	return cmdq_pkt_append_command(pkt, inst);

}

EXPORT_SYMBOL(cmdq_pkt_write_s_mask);



int cmdq_pkt_wfe(struct cmdq_pkt *pkt, u16 event)

{

	struct cmdq_instruction inst = { {0} };

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

+1 −0
Original line number Diff line number Diff line
@@ -61,6 +61,7 @@ enum cmdq_code { 
	CMDQ_CODE_WFE = 0x20,

	CMDQ_CODE_EOC = 0x40,

	CMDQ_CODE_WRITE_S = 0x90,

	CMDQ_CODE_WRITE_S_MASK = 0x91,

	CMDQ_CODE_LOGIC = 0xa0,

};

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

+18 −0
Original line number Diff line number Diff line
@@ -121,6 +121,24 @@ int cmdq_pkt_write_mask(struct cmdq_pkt *pkt, u8 subsys, 
int cmdq_pkt_write_s(struct cmdq_pkt *pkt, u16 high_addr_reg_idx,

		     u16 addr_low, u16 src_reg_idx);



/**

 * cmdq_pkt_write_s_mask() - append write_s with mask 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

 * @src_reg_idx:	the CMDQ internal register ID which cache source value

 * @mask:	the specified target address mask, use U32_MAX if no need

 *

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

 *

 * Support write value to physical address without subsys. Use CMDQ_ADDR_HIGH()

 * to get high address and call cmdq_pkt_assign() to assign value into internal

 * reg. Also use CMDQ_ADDR_LOW() to get low address for addr_low parameter when

 * call to this function.

 */

int cmdq_pkt_write_s_mask(struct cmdq_pkt *pkt, u16 high_addr_reg_idx,

			  u16 addr_low, u16 src_reg_idx, u32 mask);



/**

 * cmdq_pkt_wfe() - append wait for event command to the CMDQ packet

 * @pkt:	the CMDQ packet

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