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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: Dennis 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: Matthias Brugger <matthias.bgg@gmail.com>
This commit is contained in:
Dennis YC Hsieh 2020-07-07 23:45:10 +08:00 committed by Matthias Brugger
parent d3b04aab06
commit 1af43fce81
2 changed files with 27 additions and 0 deletions
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14
drivers/soc/mediatek/mtk-cmdq-helper.c
View File

@ -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} };

13
include/linux/soc/mediatek/mtk-cmdq.h
View File

@ -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