diff options
| author | Dennis YC Hsieh <dennis-yc.hsieh@mediatek.com> | 2020-07-07 18:45:12 +0300 |
|---|---|---|
| committer | Matthias Brugger <matthias.bgg@gmail.com> | 2020-09-25 18:27:38 +0300 |
| commit | 946f1792d3d7942acfbc6afa9a733f608f4622d6 (patch) | |
| tree | f7044c16d244f55a422e5ea8376329f3a52318f0 /drivers/soc/mediatek | |
| parent | 88a2ffc48d5bc85119ef7961df12369dcd53b4d2 (diff) | |
| download | linux-946f1792d3d7942acfbc6afa9a733f608f4622d6.tar.xz | |
soc: mediatek: cmdq: add jump function
Add jump function so that client can jump to any address which
contains instruction.
Signed-off-by: Dennis YC Hsieh <dennis-yc.hsieh@mediatek.com>
Link: https://lore.kernel.org/r/1594136714-11650-8-git-send-email-dennis-yc.hsieh@mediatek.com
Signed-off-by: Matthias Brugger <matthias.bgg@gmail.com>
Diffstat (limited to 'drivers/soc/mediatek')
| -rw-r--r-- | drivers/soc/mediatek/mtk-cmdq-helper.c | 13 |
1 files changed, 13 insertions, 0 deletions
diff --git a/drivers/soc/mediatek/mtk-cmdq-helper.c b/drivers/soc/mediatek/mtk-cmdq-helper.c index b6e25f216605..d55dc3296105 100644 --- a/drivers/soc/mediatek/mtk-cmdq-helper.c +++ b/drivers/soc/mediatek/mtk-cmdq-helper.c @@ -13,6 +13,7 @@ #define CMDQ_POLL_ENABLE_MASK BIT(0) #define CMDQ_EOC_IRQ_EN BIT(0) #define CMDQ_REG_TYPE 1 +#define CMDQ_JUMP_RELATIVE 1 struct cmdq_instruction { union { @@ -407,6 +408,18 @@ int cmdq_pkt_assign(struct cmdq_pkt *pkt, u16 reg_idx, u32 value) } EXPORT_SYMBOL(cmdq_pkt_assign); +int cmdq_pkt_jump(struct cmdq_pkt *pkt, dma_addr_t addr) +{ + struct cmdq_instruction inst = {}; + + inst.op = CMDQ_CODE_JUMP; + inst.offset = CMDQ_JUMP_RELATIVE; + inst.value = addr >> + cmdq_get_shift_pa(((struct cmdq_client *)pkt->cl)->chan); + return cmdq_pkt_append_command(pkt, inst); +} +EXPORT_SYMBOL(cmdq_pkt_jump); + int cmdq_pkt_finalize(struct cmdq_pkt *pkt) { struct cmdq_instruction inst = { {0} }; |