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soc: mediatek: cmdq: add read_s function

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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: Dennis 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: Matthias Brugger <matthias.bgg@gmail.com>
This commit is contained in:
Dennis YC Hsieh 2020-07-07 23:45:09 +08:00 committed by Matthias Brugger
parent 11c7842d41
commit d3b04aab06
3 changed files with 28 additions and 0 deletions
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15
drivers/soc/mediatek/mtk-cmdq-helper.c
View file

@ -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)
{

1
include/linux/mailbox/mtk-cmdq-mailbox.h
View file

@ -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,

12
include/linux/soc/mediatek/mtk-cmdq.h
View file

@ -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