diff options
Diffstat (limited to 'include/linux')
| -rw-r--r-- | include/linux/mailbox/mtk-cmdq-mailbox.h | 18 |
1 files changed, 18 insertions, 0 deletions
diff --git a/include/linux/mailbox/mtk-cmdq-mailbox.h b/include/linux/mailbox/mtk-cmdq-mailbox.h index e1555e06e7e5..73b70be4a8a7 100644 --- a/include/linux/mailbox/mtk-cmdq-mailbox.h +++ b/include/linux/mailbox/mtk-cmdq-mailbox.h @@ -70,14 +70,32 @@ struct cmdq_cb_data { struct cmdq_pkt *pkt; }; +struct cmdq_mbox_priv { + u8 shift_pa; +}; + struct cmdq_pkt { void *va_base; dma_addr_t pa_base; size_t cmd_buf_size; /* command occupied size */ size_t buf_size; /* real buffer size */ + struct cmdq_mbox_priv priv; /* for generating instruction */ }; /** + * cmdq_get_mbox_priv() - get the private data of mailbox channel + * @chan: mailbox channel + * @priv: pointer to store the private data of mailbox channel + * + * While generating the GCE instruction to command buffer, the private data + * of GCE hardware may need to be referenced, such as the shift bits of + * physical address. + * + * This function should be called before generating the GCE instruction. + */ +void cmdq_get_mbox_priv(struct mbox_chan *chan, struct cmdq_mbox_priv *priv); + +/** * cmdq_get_shift_pa() - get the shift bits of physical address * @chan: mailbox channel * |