ath79: add Mikrotik rb4xx series drivers

[openwrt/openwrt.git] / target / linux / ath79 / files / include / mfd / rb4xx-cpld.h

diff --git a/target/linux/ath79/files/include/mfd/rb4xx-cpld.h b/target/linux/ath79/files/include/mfd/rb4xx-cpld.h
new file mode 100644 (file)
index 0000000..d73617b
--- /dev/null
+++ b/target/linux/ath79/files/include/mfd/rb4xx-cpld.h
@@ -0,0 +1,25 @@
+// SPDX-License-Identifier: GPL-2.0-only
+/*
+ * CPLD driver for the MikroTik RouterBoard 4xx series
+ *
+ * Copyright (C) 2008-2011 Gabor Juhos <juhosg@openwrt.org>
+ * Copyright (C) 2008 Imre Kaloz <kaloz@openwrt.org>
+ * Copyright (C) 2015 Bert Vermeulen <bert@biot.com>
+ * Copyright (C) 2020 Christopher Hill <ch6574@gmail.com>
+ *
+ * This file was based on the driver for Linux 2.6.22 published by
+ * MikroTik for their RouterBoard 4xx series devices.
+ */
+#include <linux/spi/spi.h>
+
+struct rb4xx_cpld {
+       struct spi_device *spi;
+
+       int (*write_nand)(struct rb4xx_cpld *self, const void *tx_buf,
+                         unsigned int len);
+       int (*read_nand)(struct rb4xx_cpld *self, void *rx_buf,
+                        unsigned int len);
+
+       int (*gpio_set_0_7)(struct rb4xx_cpld *self, u8 values);
+       int (*gpio_set_8)(struct rb4xx_cpld *self, u8 value);
+};