driver: usb: stm32: add partial host support

Implement uhc driver for STM32. This as only been tested on a nucleo-h723zg
which USB core COMPAT is st_stm32_otghs. Adjustments will be necessary in
order to support other STM32 parts with st_stm32_otghs/st_stm32_otgfs USB
core. Parts with st_stm32_usb USB core are not supported yet.

Only control transfers are implemented. Support for bulk transfers have
also been added but hasn't been fully tested due to the lack of a proper
way to do so.

Signed-off-by: Johan Lafon <[email protected]>

Author: faloj

drivers/usb/uhc/CMakeLists.txt

@@ -5,4 +5,5 @@ zephyr_library()
 
 zephyr_library_sources(uhc_common.c)
 zephyr_library_sources_ifdef(CONFIG_UHC_MAX3421E uhc_max3421e.c)
+zephyr_library_sources_ifdef(CONFIG_UHC_STM32 uhc_stm32.c)
 zephyr_library_sources_ifdef(CONFIG_UHC_VIRTUAL uhc_virtual.c)

drivers/usb/uhc/Kconfig

@@ -37,6 +37,7 @@ module-str = uhc drv
 source "subsys/logging/Kconfig.template.log_config"
 
 source "drivers/usb/uhc/Kconfig.max3421e"
+source "drivers/usb/uhc/Kconfig.stm32"
 source "drivers/usb/uhc/Kconfig.virtual"
 
 endif # UHC_DRIVER

drivers/usb/uhc/Kconfig.stm32

@@ -0,0 +1,23 @@
+# Copyright (c) 2024 Syslinbit SCOP SAS
+# SPDX-License-Identifier: Apache-2.0
+
+config UHC_STM32
+	bool "STM32 USB host controller driver"
+	default y
+	depends on DT_HAS_ST_STM32_OTGFS_ENABLED \
+		|| DT_HAS_ST_STM32_OTGHS_ENABLED \
+		|| DT_HAS_ST_STM32_USB_ENABLED
+	select USE_STM32_LL_USB
+	select USE_STM32_HAL_HCD
+	help
+	  STM32 USB host controller driver.
+
+if UHC_STM32
+
+config UHC_STM32_DRV_THREAD_STACK_SIZE
+	int "Driver internal thread stack size"
+	default 512
+	help
+	  Size of the stack used in the STM32 USB host driver
+
+endif #UHC_STM32