driver: added driver for simple wb uart

Driver for the simple wb UART. It supports only physical UART. Signed-off-by: Piotr Klasa <piotr.klasa@cern.ch>

driver: added driver for simple wb uart
Driver for the simple wb UART. It supports only physical UART. Signed-off-by: Piotr Klasa <piotr.klasa@cern.ch>
b037a952 · Piotr Klasa · 3c636a53 · b037a952 · b037a952 · b037a952
Commit b037a952 authored Feb 05, 2024 by Piotr Klasa
7 changed files
--- a/software/Makefile
+++ b/software/Makefile
@@ -5,6 +5,7 @@
 DIRS := i2c-ocores
 DIRS += spi-ocores
 DIRS += htvic
+DIRS += wb_uart

 .PHONY: all clean modules install modules_install gtags


--- a/software/wb_uart/.gitignore
+++ b/software/wb_uart/.gitignore
+drivers/wb_uart.h
--- a/software/wb_uart/Makefile
+++ b/software/wb_uart/Makefile
+# SPDX-License-Identifier: CC0-1.0
+#
+# SPDX-FileCopyrightText: 2019 CERN
+
+.PHONY: all clean modules install modules_install
+
+DIR := drivers/
+
+all: modules
+install: modules_install
+
+clean modules modules_install cppcheck flawfinder:
+	@$(MAKE) -C $(DIR) $@
--- a/software/wb_uart/drivers/Kbuild
+++ b/software/wb_uart/drivers/Kbuild
+# SPDX-License-Identifier: GPL-2.0-or-later
+#
+# Copyright (C) 2024 CERN
+
+ccflags-y += -DGIT_VERSION=\"$(GIT_VERSION)\"
+ccflags-y += -Wall -Werror
+ccflags-y += -I$(src)/../include
+
+obj-m := wb_uart.o
+
+wb-uart-objs := wb_uart.o
+
+# priority to our local headers (avoid conflict with the version in kernel)
+LINUXINCLUDE := -I$(src)/../include $(LINUXINCLUDE)
+LINUXINCLUDE := -I$(src)/../include/linux $(LINUXINCLUDE)
\ No newline at end of file
--- a/software/wb_uart/drivers/Makefile
+++ b/software/wb_uart/drivers/Makefile
+# SPDX-FileCopyrightText: 2024 CERN (home.cern)
+#
+# SPDX-License-Identifier: GPL-2.0-or-later
+
+-include Makefile.specific
+# include parent_common.mk for buildsystem's defines
+#use absolute path for REPO_PARENT
+TOPDIR ?= $(shell /bin/pwd)/../../..
+REPO_PARENT ?= $(TOPDIR)/..
+-include $(REPO_PARENT)/parent_common.mk
+
+CPPCHECK ?= cppcheck
+FLAWFINDER ?= flawfinder
+CURDIR := $(shell /bin/pwd)
+KVERSION ?= $(shell uname -r)
+KERNELSRC ?= /lib/modules/$(KVERSION)/build
+WBGEN2 ?= wbgen2
+
+GIT_VERSION := $(shell git describe --always --dirty --long --tags)
+
+all: modules
+install: modules_install
+modules modules_install: hw_headers
+
+hw_headers: wb_uart.h
+
+wb_uart.h: $(TOPDIR)/modules/wishbone/wb_uart/simple_uart_wb.wb
+	$(WBGEN2) -s defines -C $@ $<
+
+clean help modules:
+	$(MAKE) -C $(KERNELSRC) M=$(shell pwd) GIT_VERSION=$(GIT_VERSION) $@
+
+modules_install: modules
+	$(MAKE) -C $(KERNELSRC) M=$(shell /bin/pwd) $@
+
+cppcheck:
+	$(CPPCHECK) -q -I. --enable=all *.c *.h
+
+flawfinder:
+	$(FLAWFINDER) -SQDC .
+
+.PHONY: all modules clean help install modules_install cppcheck flawfinder hw_headers
\ No newline at end of file
--- a/software/wb_uart/drivers/wb_uart.c
+++ b/software/wb_uart/drivers/wb_uart.c
--- a/software/wb_uart/include/linux/platform_data/wb_uart_pdata.h
+++ b/software/wb_uart/include/linux/platform_data/wb_uart_pdata.h
+/* SPDX-License-Identifier: GPL-2.0-or-later
+ * SPDX-FileCopyrightText: 2024 CERN (home.cern)
+ */
+
+#ifndef __WB_UART_PDATA_H__
+#define __WB_UART_PDATA_H__
+
+#include <linux/bitops.h>
+
+#define WB_UART_NAME_MAX_LEN 32
+#define WB_UART_BIG_ENDIAN BIT(0)
+
+struct wb_uart_platform_data {
+	unsigned long flags;
+	char wb_uart_name[WB_UART_NAME_MAX_LEN];
+};
+
+#endif