From 5710de45808eb8f1cc34b51dc3e67e2422113249 Mon Sep 17 00:00:00 2001 From: Prafulla Wadaskar Date: Sat, 30 May 2009 01:13:33 +0530 Subject: spi: Add Marvell Kirkwood SPI driver This patch adds a SPI driver for the Marvell Kirkwood SoC's. Signed-off-by: Prafulla Wadaskar --- include/asm-arm/arch-kirkwood/spi.h | 56 +++++++++++++++++++++++++++++++++++++ 1 file changed, 56 insertions(+) create mode 100644 include/asm-arm/arch-kirkwood/spi.h (limited to 'include/asm-arm/arch-kirkwood') diff --git a/include/asm-arm/arch-kirkwood/spi.h b/include/asm-arm/arch-kirkwood/spi.h new file mode 100644 index 0000000..1d5043f --- /dev/null +++ b/include/asm-arm/arch-kirkwood/spi.h @@ -0,0 +1,56 @@ +/* + * (C) Copyright 2009 + * Marvell Semiconductor + * Written-by: Prafulla Wadaskar + * + * Derived from drivers/spi/mpc8xxx_spi.c + * + * See file CREDITS for list of people who contributed to this + * project. + * + * This program is free software; you can redistribute it and/or + * modify it under the terms of the GNU General Public License as + * published by the Free Software Foundation; either version 2 of + * the License, or (at your option) any later version. + * + * 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. + * + * You should have received a copy of the GNU General Public License + * along with this program; if not, write to the Free Software + * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, + * MA 02110-1301 USA + */ + +#ifndef __KW_SPI_H__ +#define __KW_SPI_H__ + +/* SPI Registers on kirkwood SOC */ +struct kwspi_registers { + u32 ctrl; /* 0x10600 */ + u32 cfg; /* 0x10604 */ + u32 dout; /* 0x10608 */ + u32 din; /* 0x1060c */ + u32 irq_cause; /* 0x10610 */ + u32 irq_mask; /* 0x10614 */ +}; + +#define KWSPI_CLKPRESCL_MASK 0x1f +#define KWSPI_CSN_ACT 1 /* Activates serial memory interface */ +#define KWSPI_SMEMRDY (1 << 1) /* SerMem Data xfer ready */ +#define KWSPI_IRQUNMASK 1 /* unmask SPI interrupt */ +#define KWSPI_IRQMASK 0 /* mask SPI interrupt */ +#define KWSPI_SMEMRDIRQ 1 /* SerMem data xfer ready irq */ +#define KWSPI_XFERLEN_1BYTE 0 +#define KWSPI_XFERLEN_2BYTE (1 << 5) +#define KWSPI_XFERLEN_MASK (1 << 5) +#define KWSPI_ADRLEN_1BYTE 0 +#define KWSPI_ADRLEN_2BYTE 1 << 8 +#define KWSPI_ADRLEN_3BYTE 2 << 8 +#define KWSPI_ADRLEN_4BYTE 3 << 8 +#define KWSPI_ADRLEN_MASK 3 << 8 +#define KWSPI_TIMEOUT 10000 + +#endif /* __KW_SPI_H__ */ -- cgit v1.1