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authorDennis YC Hsieh <dennis-yc.hsieh@mediatek.com>2020-07-07 18:45:12 +0300
committerMatthias Brugger <matthias.bgg@gmail.com>2020-09-25 18:27:38 +0300
commit946f1792d3d7942acfbc6afa9a733f608f4622d6 (patch)
treef7044c16d244f55a422e5ea8376329f3a52318f0 /drivers/soc/mediatek
parent88a2ffc48d5bc85119ef7961df12369dcd53b4d2 (diff)
downloadlinux-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.c13
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} };