]> www.infradead.org Git - users/jedix/linux-maple.git/commit
i3c: mipi-i3c-hci: Add a quirk to set PIO mode
authorShyam Sundar S K <Shyam-sundar.S-k@amd.com>
Thu, 29 Aug 2024 09:17:10 +0000 (14:47 +0530)
committerAlexandre Belloni <alexandre.belloni@bootlin.com>
Thu, 5 Sep 2024 16:34:08 +0000 (18:34 +0200)
commit01408932995319eaa3d892c3c5d7739cff5da25b
treeed0b697c93db69f1eaebca84cf33ab6f7b6141ba
parent039b23609ff243497ea350200635985364da25ee
i3c: mipi-i3c-hci: Add a quirk to set PIO mode

The AMD HCI controller currently only supports PIO mode but exposes DMA
rings to the OS, which leads to the controller being configured in DMA
mode. To address this, add a quirk to avoid configuring the controller in
DMA mode and default to PIO mode.

Additionally, introduce a generic quirk infrastructure to the mipi-i3c-hci
driver to facilitate seamless future quirk additions.

Reviewed-by: Jarkko Nikula <jarkko.nikula@linux.intel.com>
Co-developed-by: Krishnamoorthi M <krishnamoorthi.m@amd.com>
Signed-off-by: Krishnamoorthi M <krishnamoorthi.m@amd.com>
Co-developed-by: Guruvendra Punugupati <Guruvendra.Punugupati@amd.com>
Signed-off-by: Guruvendra Punugupati <Guruvendra.Punugupati@amd.com>
Signed-off-by: Shyam Sundar S K <Shyam-sundar.S-k@amd.com>
Link: https://lore.kernel.org/r/20240829091713.736217-4-Shyam-sundar.S-k@amd.com
Signed-off-by: Alexandre Belloni <alexandre.belloni@bootlin.com>
drivers/i3c/master/mipi-i3c-hci/core.c
drivers/i3c/master/mipi-i3c-hci/hci.h