package/esp-hosted: add package

This patch adds esp-hosted package that allows to build the Linux
Kernel Driver for Espressif Esp32-* SoCs, that once programmed with
the corresponding firmware behave like a normal Wi-Fi module. Both
SDIO and SPI busses are supported and selectable.

Cc: Jesse Taube <jesse.taube@benettiengineering.com>
Signed-off-by: Giulio Benetti <giulio.benetti@benettiengineering.com>
Signed-off-by: Thomas Petazzoni <thomas.petazzoni@bootlin.com>

DEVELOPERS

@@ -1174,6 +1174,7 @@ F:	package/at/
 F:	package/binutils/
 F:	package/cryptsetup/
 F:	package/erlang-jiffy/
+F:	package/esp-hosted/
 F:	package/gcc/
 F:	package/harfbuzz/
 F:	package/libfuse3/

package/Config.in

@@ -496,6 +496,7 @@ endmenu
 	source "package/edid-decode/Config.in"
 	source "package/edk2-non-osi/Config.in"
 	source "package/edk2-platforms/Config.in"
+	source "package/esp-hosted/Config.in"
 	source "package/eudev/Config.in"
 	source "package/ev3dev-linux-drivers/Config.in"
 	source "package/evemu/Config.in"

package/esp-hosted/Config.in

@@ -0,0 +1,29 @@
+comment "esp-hosted needs a Linux kernel to be built"
+	depends on !BR2_LINUX_KERNEL
+
+config BR2_PACKAGE_ESP_HOSTED
+	bool "esp-hosted"
+	depends on BR2_LINUX_KERNEL
+	help
+	  This package builds and installs the Linux kernel driver for
+	  the Esp32-* Linux Wi-Fi driver. It supports both SDIO and SPI
+	  busses that is selectable. It is compatible with recent Linux
+	  kernels (>= 5.4).
+
+if BR2_PACKAGE_ESP_HOSTED
+
+choice
+	prompt "HW interface"
+	default BR2_PACKAGE_ESP_HOSTED_SDIO
+	help
+	  Select which bus type esp is attached to
+
+config BR2_PACKAGE_ESP_HOSTED_SDIO
+	bool "SDIO"
+
+config BR2_PACKAGE_ESP_HOSTED_SPI
+	bool "SPI"
+
+endchoice
+
+endif

package/esp-hosted/esp-hosted.hash

@@ -0,0 +1,3 @@
+# Locally calculated
+sha256  3310845b2324bda5774b91bcdd3f47621126f4a0011a0f61e31b0ad4a44db2f5  esp-hosted-11e90f185a5a9922343e73e44032816a0e3ddedb.tar.gz
+sha256  ed57d96d27be775b22f9571d3724ef84e0d0b8f24b805ec7f87a32189de19a9c  LICENSE

package/esp-hosted/esp-hosted.mk

@@ -0,0 +1,29 @@
+################################################################################
+#
+# esp-hosted
+#
+################################################################################
+
+ESP_HOSTED_VERSION = 11e90f185a5a9922343e73e44032816a0e3ddedb
+ESP_HOSTED_SITE = $(call github,espressif,esp-hosted,$(ESP_HOSTED_VERSION))
+ESP_HOSTED_DEPENDENCIES = linux
+ESP_HOSTED_LICENSE = GPL-2.0
+ESP_HOSTED_LICENSE_FILE = LICENSE
+ESP_HOSTED_MODULE_SUBDIRS = esp_hosted_ng/host
+
+define ESP_HOSTED_LINUX_CONFIG_FIXUPS
+	$(call KCONFIG_ENABLE_OPT,CONFIG_NET)
+	$(call KCONFIG_ENABLE_OPT,CONFIG_WIRELESS)
+	$(call KCONFIG_ENABLE_OPT,CONFIG_CFG80211)
+	$(call KCONFIG_ENABLE_OPT,CONFIG_MAC80211)
+	$(call KCONFIG_ENABLE_OPT,CONFIG_BT)
+endef
+
+ifeq ($(BR2_PACKAGE_ESP_HOSTED_SPI),y)
+ESP_HOSTED_MODULE_MAKE_OPTS = target=spi
+else
+ESP_HOSTED_MODULE_MAKE_OPTS = target=sdio
+endif
+
+$(eval $(kernel-module))
+$(eval $(generic-package))