Commit 5f6e560c authored by Dennis YC Hsieh's avatar Dennis YC Hsieh Committed by Matthias Brugger
Browse files

soc: mediatek: cmdq: add write_s function 



add write_s function in cmdq helper functions which
writes value contains in internal register 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/1594136714-11650-3-git-send-email-dennis-yc.hsieh@mediatek.com


Signed-off-by: default avatarMatthias Brugger <matthias.bgg@gmail.com>
parent 2b8cf383

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

+19 −0
Original line number Diff line number Diff line
@@ -18,6 +18,10 @@ struct cmdq_instruction { 
	union {

		u32 value;

		u32 mask;

		struct {

			u16 arg_c;

			u16 src_reg;

		};

	};

	union {

		u16 offset;
@@ -223,6 +227,21 @@ int cmdq_pkt_write_mask(struct cmdq_pkt *pkt, u8 subsys, 
}

EXPORT_SYMBOL(cmdq_pkt_write_mask);



int cmdq_pkt_write_s(struct cmdq_pkt *pkt, u16 high_addr_reg_idx,

		     u16 addr_low, u16 src_reg_idx)

{

	struct cmdq_instruction inst = {};



	inst.op = CMDQ_CODE_WRITE_S;

	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);



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
@@ -60,6 +60,7 @@ enum cmdq_code { 
	CMDQ_CODE_JUMP = 0x10,

	CMDQ_CODE_WFE = 0x20,

	CMDQ_CODE_EOC = 0x40,

	CMDQ_CODE_WRITE_S = 0x90,

	CMDQ_CODE_LOGIC = 0xa0,

};

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

+19 −0
Original line number Diff line number Diff line
@@ -12,6 +12,8 @@ 
#include <linux/timer.h>



#define CMDQ_NO_TIMEOUT		0xffffffffu

#define CMDQ_ADDR_HIGH(addr)	((u32)(((addr) >> 16) & GENMASK(31, 0)))

#define CMDQ_ADDR_LOW(addr)	((u16)(addr) | BIT(1))



struct cmdq_pkt;
@@ -102,6 +104,23 @@ 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_write_s() - append write_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

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

 *

 * 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(struct cmdq_pkt *pkt, u16 high_addr_reg_idx,

		     u16 addr_low, u16 src_reg_idx);



/**

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

 * @pkt:	the CMDQ packet

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