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soc: mediatek: cmdq: add write_s_mask function

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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: Dennis 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: Matthias Brugger <matthias.bgg@gmail.com>
This commit is contained in:
Dennis YC Hsieh 2020-07-07 23:45:08 +08:00 committed by Matthias Brugger
parent 5f6e560c2d
commit 11c7842d41
3 changed files with 42 additions and 0 deletions
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23
drivers/soc/mediatek/mtk-cmdq-helper.c
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@ -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} };

1
include/linux/mailbox/mtk-cmdq-mailbox.h
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@ -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,
};

18
include/linux/soc/mediatek/mtk-cmdq.h
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@ -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