diff options
Diffstat (limited to 'include/linux/mailbox/mtk-cmdq-mailbox.h')
| -rw-r--r-- | include/linux/mailbox/mtk-cmdq-mailbox.h | 10 |
1 files changed, 10 insertions, 0 deletions
diff --git a/include/linux/mailbox/mtk-cmdq-mailbox.h b/include/linux/mailbox/mtk-cmdq-mailbox.h index a8f0070c7aa9..9914dcd33e2d 100644 --- a/include/linux/mailbox/mtk-cmdq-mailbox.h +++ b/include/linux/mailbox/mtk-cmdq-mailbox.h @@ -78,6 +78,16 @@ struct cmdq_pkt { void *cl; }; +/** + * cmdq_get_shift_pa() - get the shift bits of physical address + * @chan: mailbox channel + * + * GCE can only fetch the command buffer address from a 32-bit register. + * Some SOCs support more than 32-bit command buffer address for GCE, which + * requires some shift bits to make the address fit into the 32-bit register. + * + * Return: the shift bits of physical address + */ u8 cmdq_get_shift_pa(struct mbox_chan *chan); #endif /* __MTK_CMDQ_MAILBOX_H__ */ |