diff options
| author | Anup Patel <apatel@ventanamicro.com> | 2025-08-18 07:09:01 +0300 |
|---|---|---|
| committer | Greg Kroah-Hartman <gregkh@linuxfoundation.org> | 2026-03-25 13:05:34 +0300 |
| commit | c42ffd816c0f25e36a5585220fcda924632e9b29 (patch) | |
| tree | 885e9c1ad37c4a5d50bcd3fce740cade0ca2df6b /include/linux/mailbox_controller.h | |
| parent | cfdb216691ec0a392aaf8037ca3dc6fff9cfd6a0 (diff) | |
| download | linux-c42ffd816c0f25e36a5585220fcda924632e9b29.tar.xz | |
mailbox: Allow controller specific mapping using fwnode
[ Upstream commit ba879dfc0574878f3e08f217b2b4fdf845c426c0 ]
Introduce optional fw_node() callback which allows a mailbox controller
driver to provide controller specific mapping using fwnode.
The Linux OF framework already implements fwnode operations for the
Linux DD framework so the fw_xlate() callback works fine with device
tree as well.
Acked-by: Jassi Brar <jassisinghbrar@gmail.com>
Reviewed-by: Andy Shevchenko <andriy.shevchenko@linux.intel.com>
Signed-off-by: Anup Patel <apatel@ventanamicro.com>
Link: https://lore.kernel.org/r/20250818040920.272664-6-apatel@ventanamicro.com
Signed-off-by: Paul Walmsley <pjw@kernel.org>
Stable-dep-of: fcd7f96c7836 ("mailbox: Prevent out-of-bounds access in fw_mbox_index_xlate()")
Signed-off-by: Sasha Levin <sashal@kernel.org>
Diffstat (limited to 'include/linux/mailbox_controller.h')
| -rw-r--r-- | include/linux/mailbox_controller.h | 3 |
1 files changed, 3 insertions, 0 deletions
diff --git a/include/linux/mailbox_controller.h b/include/linux/mailbox_controller.h index 5fb0b65f45a2..b91379922cb3 100644 --- a/include/linux/mailbox_controller.h +++ b/include/linux/mailbox_controller.h @@ -66,6 +66,7 @@ struct mbox_chan_ops { * no interrupt rises. Ignored if 'txdone_irq' is set. * @txpoll_period: If 'txdone_poll' is in effect, the API polls for * last TX's status after these many millisecs + * @fw_xlate: Controller driver specific mapping of channel via fwnode * @of_xlate: Controller driver specific mapping of channel via DT * @poll_hrt: API private. hrtimer used to poll for TXDONE on all * channels. @@ -79,6 +80,8 @@ struct mbox_controller { bool txdone_irq; bool txdone_poll; unsigned txpoll_period; + struct mbox_chan *(*fw_xlate)(struct mbox_controller *mbox, + const struct fwnode_reference_args *sp); struct mbox_chan *(*of_xlate)(struct mbox_controller *mbox, const struct of_phandle_args *sp); /* Internal to API */ |