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| author | Dennis YC Hsieh <dennis-yc.hsieh@mediatek.com> | 2020-07-07 17:45:10 +0200 |
|---|---|---|
| committer | Matthias Brugger <matthias.bgg@gmail.com> | 2020-09-25 17:27:35 +0200 |
| commit | 1af43fce813ebd74c76d080beb261603bd0853e1 (patch) | |
| tree | 4d965196d16db56c79b9230583af74113fb52ac5 | |
| parent | soc: mediatek: cmdq: add read_s function (diff) | |
| download | linux-1af43fce813ebd74c76d080beb261603bd0853e1.tar.xz linux-1af43fce813ebd74c76d080beb261603bd0853e1.zip | |
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>
| -rw-r--r-- | drivers/soc/mediatek/mtk-cmdq-helper.c | 14 | ||||
| -rw-r--r-- | include/linux/soc/mediatek/mtk-cmdq.h | 13 |
2 files changed, 27 insertions, 0 deletions
diff --git a/drivers/soc/mediatek/mtk-cmdq-helper.c b/drivers/soc/mediatek/mtk-cmdq-helper.c index ed9f5e63c195..4e86b65815fc 100644 --- a/drivers/soc/mediatek/mtk-cmdq-helper.c +++ b/drivers/soc/mediatek/mtk-cmdq-helper.c @@ -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} }; diff --git a/include/linux/soc/mediatek/mtk-cmdq.h b/include/linux/soc/mediatek/mtk-cmdq.h index cd7ec714344e..ae73e10da274 100644 --- a/include/linux/soc/mediatek/mtk-cmdq.h +++ b/include/linux/soc/mediatek/mtk-cmdq.h @@ -152,6 +152,19 @@ 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 * @event: the desired event type to "wait and CLEAR" |