Hello, WILC3000 ([1]) is a combo chip exposing 802.11b/g/n and Bluetooth 5. Support for the wlan part has recently been integrated upstream ([2]) in the existing wilc1000 driver. This new series aims to bring support for the bluetooth side. The WILC3000 chip is controlled through a SDIO or SPI bus for the wlan part (similarly to wilc1000), and uses standard HCI commands over a UART bus for the bluetooth operations. This work is based on the code available in the vendor kernel ([3]), in which bluetooth is managed directly in the wireless driver, and relies on user to trigger the hardware configuration (chardev manipulations + hciattach). The series brings a new dedicated bluetooth driver to support the bluetooth feature from the chip, without relying on the user to perform the device bringup. However, getting completely rid of the wlan driver dependency is not possible: it is still needed for early BT CPU configuration and BT firmware download, so the new driver still have a dependency of the wlan one, with an approach similar to the one used by the rsi driver. - Patch 1 brings the new dt binding - Patch 2-9 prepares the wlan side, either by exposing the needed functions to initialize BT, or by mitigating behavior which would prevent BT and WLAN from runnning in parallel - Patch 10 brings the new bluetooth driver - Patch 11 updates the device tree description for sama5d27_wlsom1_ek board (which I used to validate this series) to use the new driver - Patch 12 adds a new entry for this driver in the MAINTAINERS files This series has been tested with WILC3000 both in SDIO mode (with the chip embedded on the sama5d27_wlsom1_ek) and SPI mode (custom wiring on an SPI on the same eval board, with a WILC3000-SD). Since this works needs new code in both the existing wlan driver and the new driver, I have included both linux-wireless and bluetooth mailing lists, while keeping the entire series for clarity, but let me know if you want to proceed differently. [1] https://www.microchip.com/en-us/product/atwilc3000 [2] https://lore.kernel.org/linux-wireless/20241004114551.40236-1-marex@xxxxxxx/ [3] https://github.com/linux4microchip/linux/tree/linux-6.6-mchp/drivers/net/wireless/microchip/wilc1000 --- Alexis Lothoré (12): dt-bindings: bluetooth: describe wilc 3000 bluetooth chip wifi: wilc1000: add a read-modify-write API for registers accesses wifi: wilc1000: add lock to prevent concurrent firmware startup wifi: wilc1000: allow to use acquire/release bus in other parts of driver wifi: wilc1000: do not depend on power save flag to wake up chip wifi: wilc1000: remove timeout parameter from set_power_mgmt wifi: wilc1000: reorganize makefile objs into sorted list wifi: wilc1000: add basic functions to allow bluetooth bringup wifi: wilc1000: disable firmware power save if bluetooth is in use bluetooth: hci_wilc: add wilc hci driver ARM: dts: at91-sama5d27_wlsom1: update bluetooth chip description MAINTAINERS: add entry for new wilc3000 bluetooth driver .../net/bluetooth/microchip,wilc3000-bt.yaml | 41 +++ MAINTAINERS | 7 + .../boot/dts/microchip/at91-sama5d27_wlsom1.dtsi | 8 + .../boot/dts/microchip/at91-sama5d27_wlsom1_ek.dts | 10 - drivers/bluetooth/Kconfig | 13 + drivers/bluetooth/Makefile | 3 +- drivers/bluetooth/hci_uart.h | 1 + drivers/bluetooth/hci_wilc.c | 333 ++++++++++++++++++++ drivers/net/wireless/microchip/wilc1000/Kconfig | 3 + drivers/net/wireless/microchip/wilc1000/Makefile | 11 +- drivers/net/wireless/microchip/wilc1000/bt.c | 345 +++++++++++++++++++++ drivers/net/wireless/microchip/wilc1000/cfg80211.c | 7 +- drivers/net/wireless/microchip/wilc1000/hif.c | 2 +- drivers/net/wireless/microchip/wilc1000/hif.h | 2 +- drivers/net/wireless/microchip/wilc1000/netdev.c | 14 + drivers/net/wireless/microchip/wilc1000/netdev.h | 5 + drivers/net/wireless/microchip/wilc1000/sdio.c | 101 ++++-- drivers/net/wireless/microchip/wilc1000/spi.c | 43 +++ drivers/net/wireless/microchip/wilc1000/wlan.c | 154 ++++----- drivers/net/wireless/microchip/wilc1000/wlan.h | 23 ++ include/net/wilc.h | 19 ++ 21 files changed, 996 insertions(+), 149 deletions(-) --- base-commit: 95f6f2d73dc40ab53a94756689ce5cfd2f23361a change-id: 20240828-wilc3000_bt-fa452f2a93ad Best regards, -- Alexis Lothoré, Bootlin Embedded Linux and Kernel engineering https://bootlin.com
