These changes are the raw update to linux-4.4.6-rt14. Kernel sources

[kvmfornfv.git] / kernel / drivers / mtd / nand / brcmnand / brcmnand.h

diff --git a/kernel/drivers/mtd/nand/brcmnand/brcmnand.h b/kernel/drivers/mtd/nand/brcmnand/brcmnand.h
new file mode 100644 (file)
index 0000000..ef5eabb
--- /dev/null
+++ b/kernel/drivers/mtd/nand/brcmnand/brcmnand.h
@@ -0,0 +1,71 @@
+/*
+ * Copyright © 2015 Broadcom Corporation
+ *
+ * This program is free software; you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License version 2 as
+ * published by the Free Software Foundation.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
+ * GNU General Public License for more details.
+ */
+
+#ifndef __BRCMNAND_H__
+#define __BRCMNAND_H__
+
+#include <linux/types.h>
+#include <linux/io.h>
+
+struct platform_device;
+struct dev_pm_ops;
+
+struct brcmnand_soc {
+       bool (*ctlrdy_ack)(struct brcmnand_soc *soc);
+       void (*ctlrdy_set_enabled)(struct brcmnand_soc *soc, bool en);
+       void (*prepare_data_bus)(struct brcmnand_soc *soc, bool prepare);
+};
+
+static inline void brcmnand_soc_data_bus_prepare(struct brcmnand_soc *soc)
+{
+       if (soc && soc->prepare_data_bus)
+               soc->prepare_data_bus(soc, true);
+}
+
+static inline void brcmnand_soc_data_bus_unprepare(struct brcmnand_soc *soc)
+{
+       if (soc && soc->prepare_data_bus)
+               soc->prepare_data_bus(soc, false);
+}
+
+static inline u32 brcmnand_readl(void __iomem *addr)
+{
+       /*
+        * MIPS endianness is configured by boot strap, which also reverses all
+        * bus endianness (i.e., big-endian CPU + big endian bus ==> native
+        * endian I/O).
+        *
+        * Other architectures (e.g., ARM) either do not support big endian, or
+        * else leave I/O in little endian mode.
+        */
+       if (IS_ENABLED(CONFIG_MIPS) && IS_ENABLED(CONFIG_CPU_BIG_ENDIAN))
+               return __raw_readl(addr);
+       else
+               return readl_relaxed(addr);
+}
+
+static inline void brcmnand_writel(u32 val, void __iomem *addr)
+{
+       /* See brcmnand_readl() comments */
+       if (IS_ENABLED(CONFIG_MIPS) && IS_ENABLED(CONFIG_CPU_BIG_ENDIAN))
+               __raw_writel(val, addr);
+       else
+               writel_relaxed(val, addr);
+}
+
+int brcmnand_probe(struct platform_device *pdev, struct brcmnand_soc *soc);
+int brcmnand_remove(struct platform_device *pdev);
+
+extern const struct dev_pm_ops brcmnand_pm_ops;
+
+#endif /* __BRCMNAND_H__ */