diff options
| author | Chun-Kuang Hu <chunkuang.hu@kernel.org> | 2024-02-22 18:41:12 +0300 |
|---|---|---|
| committer | AngeloGioacchino Del Regno <angelogioacchino.delregno@collabora.com> | 2024-04-23 13:16:54 +0300 |
| commit | 698cdcb19579f9de005698f9dfb660ab6ec65d32 (patch) | |
| tree | 87b5272d2bfc41708df13ba2199d5b541e9940d4 /drivers/soc/mediatek/mtk-cmdq-helper.c | |
| parent | 7218be3b6fcf00d1a3a6867aa1be6b9ab91cce45 (diff) | |
| download | linux-698cdcb19579f9de005698f9dfb660ab6ec65d32.tar.xz | |
soc: mediatek: cmdq: Add cmdq_pkt_jump_rel() helper function
cmdq_pkt_jump_rel() append relative jump command to the packet.
Relative jump change PC to the target address with offset from
current PC.
Signed-off-by: Chun-Kuang Hu <chunkuang.hu@kernel.org>
Reviewed-by: AngeloGioacchino Del Regno <angelogioacchino.delregno@collabora.com>
Link: https://lore.kernel.org/r/20240222154120.16959-5-chunkuang.hu@kernel.org
Signed-off-by: AngeloGioacchino Del Regno <angelogioacchino.delregno@collabora.com>
Diffstat (limited to 'drivers/soc/mediatek/mtk-cmdq-helper.c')
| -rw-r--r-- | drivers/soc/mediatek/mtk-cmdq-helper.c | 10 |
1 files changed, 10 insertions, 0 deletions
diff --git a/drivers/soc/mediatek/mtk-cmdq-helper.c b/drivers/soc/mediatek/mtk-cmdq-helper.c index 38d9077725d2..678db09983d4 100644 --- a/drivers/soc/mediatek/mtk-cmdq-helper.c +++ b/drivers/soc/mediatek/mtk-cmdq-helper.c @@ -404,6 +404,16 @@ int cmdq_pkt_jump_abs(struct cmdq_pkt *pkt, dma_addr_t addr, u8 shift_pa) } EXPORT_SYMBOL(cmdq_pkt_jump_abs); +int cmdq_pkt_jump_rel(struct cmdq_pkt *pkt, s32 offset, u8 shift_pa) +{ + struct cmdq_instruction inst = { {0} }; + + inst.op = CMDQ_CODE_JUMP; + inst.value = (u32)offset >> shift_pa; + return cmdq_pkt_append_command(pkt, inst); +} +EXPORT_SYMBOL(cmdq_pkt_jump_rel); + int cmdq_pkt_finalize(struct cmdq_pkt *pkt) { struct cmdq_instruction inst = { {0} }; |