Commit 1af43fce authored by Dennis YC Hsieh's avatar Dennis YC Hsieh Committed by Matthias Brugger
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soc: mediatek: cmdq: add write_s value function 



add write_s function in cmdq helper functions which
writes a constant value to address with large dma
access support.

Signed-off-by: default avatarDennis YC Hsieh <dennis-yc.hsieh@mediatek.com>
Link: https://lore.kernel.org/r/1594136714-11650-6-git-send-email-dennis-yc.hsieh@mediatek.com


Signed-off-by: default avatarMatthias Brugger <matthias.bgg@gmail.com>
parent d3b04aab

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

+14 −0
Original line number Diff line number Diff line
@@ -280,6 +280,20 @@ int cmdq_pkt_write_s_mask(struct cmdq_pkt *pkt, u16 high_addr_reg_idx, 
}

EXPORT_SYMBOL(cmdq_pkt_write_s_mask);



int cmdq_pkt_write_s_value(struct cmdq_pkt *pkt, u8 high_addr_reg_idx,

			   u16 addr_low, u32 value)

{

	struct cmdq_instruction inst = {};



	inst.op = CMDQ_CODE_WRITE_S;

	inst.sop = high_addr_reg_idx;

	inst.offset = addr_low;

	inst.value = value;



	return cmdq_pkt_append_command(pkt, inst);

}

EXPORT_SYMBOL(cmdq_pkt_write_s_value);



int cmdq_pkt_wfe(struct cmdq_pkt *pkt, u16 event)

{

	struct cmdq_instruction inst = { {0} };

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

+13 −0
Original line number Diff line number Diff line
@@ -151,6 +151,19 @@ int cmdq_pkt_write_s(struct cmdq_pkt *pkt, u16 high_addr_reg_idx, 
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_write_s_value() - append write_s command to the CMDQ packet which

 *			      write value to a physical address

 * @pkt:	the CMDQ packet

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

 * @addr_low:	low address of pa

 * @value:	the specified target value

 *

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

 */

int cmdq_pkt_write_s_value(struct cmdq_pkt *pkt, u8 high_addr_reg_idx,

			   u16 addr_low, u32 value);



/**

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

 * @pkt:	the CMDQ packet

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