Commit 613c2e2c authored by Dennis YC Hsieh's avatar Dennis YC Hsieh Committed by Matthias Brugger
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soc: mediatek: cmdq: add assign function 



Add assign function in cmdq helper which assign constant value into
internal register by index.

Signed-off-by: default avatarDennis YC Hsieh <dennis-yc.hsieh@mediatek.com>
Link: https://lore.kernel.org/r/1592749115-24158-3-git-send-email-dennis-yc.hsieh@mediatek.com


Signed-off-by: default avatarMatthias Brugger <matthias.bgg@gmail.com>
parent b3a9e3b9

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

+23 −1
Original line number Diff line number Diff line
@@ -12,6 +12,7 @@ 
#define CMDQ_WRITE_ENABLE_MASK	BIT(0)

#define CMDQ_POLL_ENABLE_MASK	BIT(0)

#define CMDQ_EOC_IRQ_EN		BIT(0)

#define CMDQ_REG_TYPE		1



struct cmdq_instruction {

	union {
@@ -21,8 +22,17 @@ struct cmdq_instruction { 
	union {

		u16 offset;

		u16 event;

		u16 reg_dst;

	};

	union {

		u8 subsys;

		struct {

			u8 sop:5;

			u8 arg_c_t:1;

			u8 src_t:1;

			u8 dst_t:1;

		};

	};

	u8 op;

};
@@ -278,6 +288,18 @@ int cmdq_pkt_poll_mask(struct cmdq_pkt *pkt, u8 subsys, 
}

EXPORT_SYMBOL(cmdq_pkt_poll_mask);



int cmdq_pkt_assign(struct cmdq_pkt *pkt, u16 reg_idx, u32 value)

{

	struct cmdq_instruction inst = {};



	inst.op = CMDQ_CODE_LOGIC;

	inst.dst_t = CMDQ_REG_TYPE;

	inst.reg_dst = reg_idx;

	inst.value = value;

	return cmdq_pkt_append_command(pkt, inst);

}

EXPORT_SYMBOL(cmdq_pkt_assign);



static int cmdq_pkt_finalize(struct cmdq_pkt *pkt)

{

	struct cmdq_instruction inst = { {0} };

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

+1 −0
Original line number Diff line number Diff line
@@ -59,6 +59,7 @@ enum cmdq_code { 
	CMDQ_CODE_JUMP = 0x10,

	CMDQ_CODE_WFE = 0x20,

	CMDQ_CODE_EOC = 0x40,

	CMDQ_CODE_LOGIC = 0xa0,

};



enum cmdq_cb_status {

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

+14 −0
Original line number Diff line number Diff line
@@ -152,6 +152,20 @@ int cmdq_pkt_poll(struct cmdq_pkt *pkt, u8 subsys, 
 */

int cmdq_pkt_poll_mask(struct cmdq_pkt *pkt, u8 subsys,

		       u16 offset, u32 value, u32 mask);



/**

 * cmdq_pkt_assign() - Append logic assign command to the CMDQ packet, ask GCE

 *		       to execute an instruction that set a constant value into

 *		       internal register and use as value, mask or address in

 *		       read/write instruction.

 * @pkt:	the CMDQ packet

 * @reg_idx:	the CMDQ internal register ID

 * @value:	the specified value

 *

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

 */

int cmdq_pkt_assign(struct cmdq_pkt *pkt, u16 reg_idx, u32 value);



/**

 * cmdq_pkt_flush_async() - trigger CMDQ to asynchronously execute the CMDQ

 *                          packet and call back at the end of done packet

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