path: root/target/linux/brcm63xx/patches-2.6.39/240-spi.patch

--- a/arch/mips/bcm63xx/cpu.c
+++ b/arch/mips/bcm63xx/cpu.c
@@ -58,6 +58,7 @@ static const unsigned long bcm96338_regs
 
 static const int bcm96338_irqs[] = {
 	[IRQ_TIMER]		= BCM_6338_TIMER_IRQ,
+	[IRQ_SPI]		= BCM_6338_SPI_IRQ,
 	[IRQ_UART0]		= BCM_6338_UART0_IRQ,
 	[IRQ_DSL]		= BCM_6338_DSL_IRQ,
 	[IRQ_ENET0]		= BCM_6338_ENET0_IRQ,
@@ -132,6 +133,7 @@ static const unsigned long bcm96348_regs
 
 static const int bcm96348_irqs[] = {
 	[IRQ_TIMER]		= BCM_6348_TIMER_IRQ,
+	[IRQ_SPI]		= BCM_6348_SPI_IRQ,
 	[IRQ_UART0]		= BCM_6348_UART0_IRQ,
 	[IRQ_DSL]		= BCM_6348_DSL_IRQ,
 	[IRQ_ENET0]		= BCM_6348_ENET0_IRQ,
@@ -175,6 +177,7 @@ static const unsigned long bcm96358_regs
 
 static const int bcm96358_irqs[] = {
 	[IRQ_TIMER]		= BCM_6358_TIMER_IRQ,
+	[IRQ_SPI]		= BCM_6358_SPI_IRQ,
 	[IRQ_UART0]		= BCM_6358_UART0_IRQ,
 	[IRQ_UART1]		= BCM_6358_UART1_IRQ,
 	[IRQ_DSL]		= BCM_6358_DSL_IRQ,
--- /dev/null
+++ b/arch/mips/bcm63xx/dev-spi.c
@@ -0,0 +1,98 @@
+/*
+ * This file is subject to the terms and conditions of the GNU General Public
+ * License.  See the file "COPYING" in the main directory of this archive
+ * for more details.
+ *
+ * Copyright (C) 2009-2011 Florian Fainelli <florian@openwrt.org>
+ * Copyright (C) 2010 Tanguy Bouzeloc <tanguy.bouzeloc@efixo.com>
+ */
+
+#include <linux/init.h>
+#include <linux/kernel.h>
+#include <linux/platform_device.h>
+
+#include <bcm63xx_cpu.h>
+#include <bcm63xx_dev_spi.h>
+#include <bcm63xx_regs.h>
+
+#ifdef BCMCPU_RUNTIME_DETECT
+/*
+ * register offsets
+ */
+static const unsigned long bcm96338_regs_spi[] = {
+	__GEN_SPI_REGS_TABLE(6338)
+};
+
+static const unsigned long bcm96348_regs_spi[] = {
+	__GEN_SPI_REGS_TABLE(6348)
+};
+
+static const unsigned long bcm96358_regs_spi[] = {
+	__GEN_SPI_REGS_TABLE(6358)
+};
+
+const unsigned long *bcm63xx_regs_spi;
+EXPORT_SYMBOL(bcm63xx_regs_spi);
+
+static __init void bcm63xx_spi_regs_init(void)
+{
+	if (BCMCPU_IS_6338())
+		bcm63xx_regs_spi = bcm96338_regs_spi;
+	if (BCMCPU_IS_6348())
+		bcm63xx_regs_spi = bcm96348_regs_spi;
+	if (BCMCPU_IS_6358())
+		bcm63xx_regs_spi = bcm96358_regs_spi;
+}
+#else
+static __init void bcm63xx_spi_regs_init(void) { }
+#endif
+
+static struct resource spi_resources[] = {
+	{
+		.start		= -1, /* filled at runtime */
+		.end		= -1, /* filled at runtime */
+		.flags		= IORESOURCE_MEM,
+	},
+	{
+		.start		= -1, /* filled at runtime */
+		.flags		= IORESOURCE_IRQ,
+	},
+};
+
+static struct bcm63xx_spi_pdata spi_pdata = {
+	.bus_num		= 0,
+	.num_chipselect		= 8,
+	.speed_hz		= 50000000,	/* Fclk */
+};
+
+static struct platform_device bcm63xx_spi_device = {
+	.name		= "bcm63xx-spi",
+	.id		= 0,
+	.num_resources	= ARRAY_SIZE(spi_resources),
+	.resource	= spi_resources,
+	.dev		= {
+		.platform_data = &spi_pdata,
+	},
+};
+
+int __init bcm63xx_spi_register(void)
+{
+	spi_resources[0].start = bcm63xx_regset_address(RSET_SPI);
+	spi_resources[0].end = spi_resources[0].start;
+	spi_resources[0].end += RSET_SPI_SIZE - 1;
+	spi_resources[1].start = bcm63xx_get_irq_number(IRQ_SPI);
+
+	if (BCMCPU_IS_6345())
+		return -ENODEV;
+
+	/* Fill in platform data */
+	if (BCMCPU_IS_6338() || BCMCPU_IS_6348())
+		spi_pdata.fifo_size = SPI_BCM_6338_SPI_MSG_DATA_SIZE;
+
+	if (BCMCPU_IS_6358())
+		spi_pdata.fifo_size = SPI_BCM_6358_SPI_MSG_DATA_SIZE;
+
+	bcm63xx_spi_regs_init();
+
+	return platform_device_register(&bcm63xx_spi_device);
+}
--- a/arch/mips/include/asm/mach-bcm63xx/bcm63xx_cpu.h
+++ b/arch/mips/include/asm/mach-bcm63xx/bcm63xx_cpu.h
@@ -109,6 +109,7 @@ enum bcm63xx_regs_set {
 #define RSET_WDT_SIZE			12
 #define RSET_ENET_SIZE			2048
 #define RSET_ENETDMA_SIZE		2048
+#define RSET_SPI_SIZE			256
 #define RSET_UART_SIZE			24
 #define RSET_UDC_SIZE			256
 #define RSET_OHCI_SIZE			256
@@ -214,7 +215,7 @@ enum bcm63xx_regs_set {
 #define BCM_6358_UART0_BASE		(0xfffe0100)
 #define BCM_6358_UART1_BASE		(0xfffe0120)
 #define BCM_6358_GPIO_BASE		(0xfffe0080)
-#define BCM_6358_SPI_BASE		(0xdeadbeef)
+#define BCM_6358_SPI_BASE		(0xfffe0800)
 #define BCM_6358_UDC0_BASE		(0xfffe0400)
 #define BCM_6358_OHCI0_BASE		(0xfffe1400)
 #define BCM_6358_OHCI_PRIV_BASE		(0xdeadbeef)
@@ -441,6 +442,7 @@ static inline unsigned long bcm63xx_regs
  */
 enum bcm63xx_irq {
 	IRQ_TIMER = 0,
+	IRQ_SPI,
 	IRQ_UART0,
 	IRQ_UART1,
 	IRQ_DSL,
@@ -507,6 +509,7 @@ enum bcm63xx_irq {
  * 6348 irqs
  */
 #define BCM_6348_TIMER_IRQ		(IRQ_INTERNAL_BASE + 0)
+#define BCM_6348_SPI_IRQ		(IRQ_INTERNAL_BASE + 1)
 #define BCM_6348_UART0_IRQ		(IRQ_INTERNAL_BASE + 2)
 #define BCM_6348_DSL_IRQ		(IRQ_INTERNAL_BASE + 4)
 #define BCM_6348_UDC0_IRQ		(IRQ_INTERNAL_BASE + 6)
@@ -531,6 +534,7 @@ enum bcm63xx_irq {
  * 6358 irqs
  */
 #define BCM_6358_TIMER_IRQ		(IRQ_INTERNAL_BASE + 0)
+#define BCM_6358_SPI_IRQ		(IRQ_INTERNAL_BASE + 1)
 #define BCM_6358_UART0_IRQ		(IRQ_INTERNAL_BASE + 2)
 #define BCM_6358_UART1_IRQ		(IRQ_INTERNAL_BASE + 3)
 #define BCM_6358_OHCI0_IRQ		(IRQ_INTERNAL_BASE + 5)
--- a/arch/mips/include/asm/mach-bcm63xx/bcm63xx_regs.h
+++ b/arch/mips/include/asm/mach-bcm63xx/bcm63xx_regs.h
@@ -771,4 +771,116 @@
 #define DMIPSPLLCFG_N2_SHIFT		29
 #define DMIPSPLLCFG_N2_MASK		(0x7 << DMIPSPLLCFG_N2_SHIFT)
 
+/*************************************************************************
+ * _REG relative to RSET_SPI
+ *************************************************************************/
+
+/* BCM 6338 SPI core */
+#define SPI_BCM_6338_SPI_CMD		0x00	/* 16-bits register */
+#define SPI_BCM_6338_SPI_INT_STATUS	0x02
+#define SPI_BCM_6338_SPI_INT_MASK_ST	0x03
+#define SPI_BCM_6338_SPI_INT_MASK	0x04
+#define SPI_BCM_6338_SPI_ST		0x05
+#define SPI_BCM_6338_SPI_CLK_CFG	0x06
+#define SPI_BCM_6338_SPI_FILL_BYTE	0x07
+#define SPI_BCM_6338_SPI_MSG_TAIL	0x09
+#define SPI_BCM_6338_SPI_RX_TAIL	0x0b
+#define SPI_BCM_6338_SPI_MSG_CTL	0x40
+#define SPI_BCM_6338_SPI_MSG_DATA	0x41
+#define SPI_BCM_6338_SPI_MSG_DATA_SIZE	0x3f
+#define SPI_BCM_6338_SPI_RX_DATA	0x80
+#define SPI_BCM_6338_SPI_RX_DATA_SIZE	0x3f
+
+/* BCM 6348 SPI core */
+#define SPI_BCM_6348_SPI_INT_MASK_ST	0x00
+#define SPI_BCM_6348_SPI_INT_STATUS	0x01
+#define SPI_BCM_6348_SPI_CMD		0x02	/* 16-bits register */
+#define SPI_BCM_6348_SPI_FILL_BYTE	0x04
+#define SPI_BCM_6348_SPI_CLK_CFG	0x05
+#define SPI_BCM_6348_SPI_ST		0x06
+#define SPI_BCM_6348_SPI_INT_MASK	0x07
+#define SPI_BCM_6348_SPI_RX_TAIL	0x08
+#define SPI_BCM_6348_SPI_MSG_TAIL	0x10
+#define SPI_BCM_6348_SPI_MSG_DATA	0x40
+#define SPI_BCM_6348_SPI_MSG_CTL	0x42
+#define SPI_BCM_6348_SPI_MSG_DATA_SIZE	0x3f
+#define SPI_BCM_6348_SPI_RX_DATA	0x80
+#define SPI_BCM_6348_SPI_RX_DATA_SIZE	0x3f
+
+/* BCM 6358 SPI core */
+#define SPI_BCM_6358_SPI_MSG_CTL	0x00	/* 16-bits register */
+
+#define SPI_BCM_6358_SPI_MSG_DATA	0x02
+#define SPI_BCM_6358_SPI_MSG_DATA_SIZE	0x21e
+
+#define SPI_BCM_6358_SPI_RX_DATA	0x400
+#define SPI_BCM_6358_SPI_RX_DATA_SIZE	0x220
+
+#define SPI_BCM_6358_SPI_CMD		0x700	/* 16-bits register */
+
+#define SPI_BCM_6358_SPI_INT_STATUS	0x702
+#define SPI_BCM_6358_SPI_INT_MASK_ST	0x703
+
+#define SPI_BCM_6358_SPI_INT_MASK	0x704
+
+#define SPI_BCM_6358_SPI_ST		0x705
+
+#define SPI_BCM_6358_SPI_CLK_CFG	0x706
+
+#define SPI_BCM_6358_SPI_FILL_BYTE	0x707
+#define SPI_BCM_6358_SPI_MSG_TAIL	0x709
+#define SPI_BCM_6358_SPI_RX_TAIL	0x70B
+
+/* Shared SPI definitions */
+
+/* Message configuration */
+#define SPI_FD_RW			0x00
+#define SPI_HD_W			0x01
+#define SPI_HD_R			0x02
+#define SPI_BYTE_CNT_SHIFT		0
+#define SPI_MSG_TYPE_SHIFT		14
+
+/* Command */
+#define SPI_CMD_NOOP			0x01
+#define SPI_CMD_SOFT_RESET		0x02
+#define SPI_CMD_HARD_RESET		0x04
+#define SPI_CMD_START_IMMEDIATE		0x08
+#define SPI_CMD_COMMAND_SHIFT		0
+#define SPI_CMD_COMMAND_MASK		0x000f
+#define SPI_CMD_DEVICE_ID_SHIFT		4
+#define SPI_CMD_PREPEND_BYTE_CNT_SHIFT	8
+#define SPI_CMD_ONE_BYTE_SHIFT		11
+#define SPI_CMD_ONE_WIRE_SHIFT		12
+#define SPI_DEV_ID_0			0
+#define SPI_DEV_ID_1			1
+#define SPI_DEV_ID_2			2
+#define SPI_DEV_ID_3			3
+
+/* Interrupt mask */
+#define SPI_INTR_CMD_DONE		0x01
+#define SPI_INTR_RX_OVERFLOW		0x02
+#define SPI_INTR_TX_UNDERFLOW		0x04
+#define SPI_INTR_TX_OVERFLOW		0x08
+#define SPI_INTR_RX_UNDERFLOW		0x10
+#define SPI_INTR_CLEAR_ALL		0x1f
+
+/* Status */
+#define SPI_RX_EMPTY			0x02
+#define SPI_CMD_BUSY			0x04
+#define SPI_SERIAL_BUSY			0x08
+
+/* Clock configuration */
+#define SPI_CLK_20MHZ			0x00
+#define SPI_CLK_0_391MHZ		0x01
+#define SPI_CLK_0_781MHZ		0x02 /* default */
+#define SPI_CLK_1_563MHZ		0x03
+#define SPI_CLK_3_125MHZ		0x04
+#define SPI_CLK_6_250MHZ		0x05
+#define SPI_CLK_12_50MHZ		0x06
+#define SPI_CLK_25MHZ			0x07
+#define SPI_CLK_MASK			0x07
+#define SPI_SSOFFTIME_MASK		0x38
+#define SPI_SSOFFTIME_SHIFT		3
+#define SPI_BYTE_SWAP			0x80
+
 #endif /* BCM63XX_REGS_H_ */
--- /dev/null
+++ b/drivers/spi/bcm63xx_spi.c
@@ -0,0 +1,496 @@
+/*
+ * Broadcom BCM63xx SPI controller support
+ *
+ * Copyright (C) 2009 Florian Fainelli <florian@openwrt.org>
+ * Copyright (C) 2010 Tanguy Bouzeloc <tanguy.bouzeloc@efixo.com>
+ *
+ * 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,
+ */
+
+#include <linux/kernel.h>
+#include <linux/init.h>
+#include <linux/clk.h>
+#include <linux/module.h>
+#include <linux/platform_device.h>
+#include <linux/delay.h>
+#include <linux/interrupt.h>
+#include <linux/spi/spi.h>
+#include <linux/completion.h>
+#include <linux/err.h>
+
+#include <bcm63xx_dev_spi.h>
+
+#define PFX 		KBUILD_MODNAME
+#define DRV_VER		"0.1.2"
+
+struct bcm63xx_spi {
+	spinlock_t              lock;
+	int			stopping;
+        struct completion	done;
+
+	void __iomem		*regs;
+	int			irq;
+
+	/* Platform data */
+        u32			speed_hz;
+	unsigned		fifo_size;
+
+	/* Data buffers */
+	const unsigned char	*tx_ptr;
+	unsigned char		*rx_ptr;
+
+	/* data iomem */
+	u8 __iomem		*tx_io;
+	const u8 __iomem	*rx_io;
+
+	int			remaining_bytes;
+
+	struct clk		*clk;
+	struct platform_device	*pdev;
+};
+
+static inline u8 bcm_spi_readb(struct bcm63xx_spi *bs,
+				unsigned int offset)
+{
+	return bcm_readw(bs->regs + bcm63xx_spireg(offset));
+}
+
+static inline u16 bcm_spi_readw(struct bcm63xx_spi *bs,
+				unsigned int offset)
+{
+	return bcm_readw(bs->regs + bcm63xx_spireg(offset));
+}
+
+static inline void bcm_spi_writeb(struct bcm63xx_spi *bs,
+				  u8 value, unsigned int offset)
+{
+	bcm_writeb(value, bs->regs + bcm63xx_spireg(offset));
+}
+
+static inline void bcm_spi_writew(struct bcm63xx_spi *bs,
+				  u16 value, unsigned int offset)
+{
+	bcm_writew(value, bs->regs + bcm63xx_spireg(offset));
+}
+
+static int bcm63xx_spi_setup_transfer(struct spi_device *spi,
+				      struct spi_transfer *t)
+{
+	u8 bits_per_word;
+	u8 clk_cfg;
+	u32 hz;
+	unsigned int div;
+
+	struct bcm63xx_spi *bs = spi_master_get_devdata(spi->master);
+
+	bits_per_word = (t) ? t->bits_per_word : spi->bits_per_word;
+	hz = (t) ? t->speed_hz : spi->max_speed_hz;
+	if (bits_per_word != 8) {
+		dev_err(&spi->dev, "%s, unsupported bits_per_word=%d\n",
+			__func__, bits_per_word);
+		return -EINVAL;
+        }
+
+	if (spi->chip_select > spi->master->num_chipselect) {
+		dev_err(&spi->dev, "%s, unsupported slave %d\n",
+			__func__, spi->chip_select);
+		return -EINVAL;
+	}
+
+	/* Check clock setting */
+	div = (bs->speed_hz / hz);
+	switch (div) {
+	case 2:
+		clk_cfg = SPI_CLK_25MHZ;
+		break;
+	case 4:
+		clk_cfg = SPI_CLK_12_50MHZ;
+		break;
+	case 8:
+		clk_cfg = SPI_CLK_6_250MHZ;
+		break;
+	case 16:
+		clk_cfg = SPI_CLK_3_125MHZ;
+		break;
+	case 32:
+		clk_cfg = SPI_CLK_1_563MHZ;
+		break;
+	case 64:
+		clk_cfg = SPI_CLK_0_781MHZ;
+		break;
+	case 128:
+	default:
+		/* Set to slowest mode for compatibility */
+		clk_cfg = SPI_CLK_0_391MHZ;
+		break;
+	}
+
+	bcm_spi_writeb(bs, clk_cfg, SPI_CLK_CFG);
+	dev_dbg(&spi->dev, "Setting clock register to %d (hz %d, cmd %02x)\n",
+		div, hz, clk_cfg);
+
+	return 0;
+}
+
+/* the spi->mode bits understood by this driver: */
+#define MODEBITS (SPI_CPOL | SPI_CPHA)
+
+static int bcm63xx_spi_setup(struct spi_device *spi)
+{
+	struct bcm63xx_spi *bs;
+	int ret;
+
+	bs = spi_master_get_devdata(spi->master);
+
+	if (bs->stopping)
+		return -ESHUTDOWN;
+
+	if (!spi->bits_per_word)
+		spi->bits_per_word = 8;
+
+	if (spi->mode & ~MODEBITS) {
+		dev_err(&spi->dev, "%s, unsupported mode bits %x\n",
+			__func__, spi->mode & ~MODEBITS);
+		return -EINVAL;
+	}
+
+	ret = bcm63xx_spi_setup_transfer(spi, NULL);
+	if (ret < 0) {
+		dev_err(&spi->dev, "setup: unsupported mode bits %x\n",
+			spi->mode & ~MODEBITS);
+		return ret;
+	}
+
+	dev_dbg(&spi->dev, "%s, mode %d, %u bits/w, %u nsec/bit\n",
+		__func__, spi->mode & MODEBITS, spi->bits_per_word, 0);
+
+	return 0;
+}
+
+/* Fill the TX FIFO with as many bytes as possible */
+static void bcm63xx_spi_fill_tx_fifo(struct bcm63xx_spi *bs)
+{
+	u8 size;
+
+        /* Fill the Tx FIFO with as many bytes as possible */
+	size = bs->remaining_bytes < bs->fifo_size ? bs->remaining_bytes :
+		bs->fifo_size;
+	memcpy_toio(bs->tx_io, bs->tx_ptr, size);
+	bs->remaining_bytes -= size;
+}
+
+static int bcm63xx_txrx_bufs(struct spi_device *spi, struct spi_transfer *t)
+{
+	struct bcm63xx_spi *bs = spi_master_get_devdata(spi->master);
+	u16 msg_ctl;
+	u16 cmd;
+
+	dev_dbg(&spi->dev, "txrx: tx %p, rx %p, len %d\n",
+		t->tx_buf, t->rx_buf, t->len);
+
+	/* Transmitter is inhibited */
+	bs->tx_ptr = t->tx_buf;
+	bs->rx_ptr = t->rx_buf;
+	init_completion(&bs->done);
+
+	if (t->tx_buf) {
+		bs->remaining_bytes = t->len;
+		bcm63xx_spi_fill_tx_fifo(bs);
+	}
+
+	/* Enable the command done interrupt which
+	 * we use to determine completion of a command */
+	bcm_spi_writeb(bs, SPI_INTR_CMD_DONE, SPI_INT_MASK);
+
+	/* Fill in the Message control register */
+	msg_ctl = (t->len << SPI_BYTE_CNT_SHIFT);
+
+	if (t->rx_buf && t->tx_buf)
+		msg_ctl |= (SPI_FD_RW << SPI_MSG_TYPE_SHIFT);
+	else if (t->rx_buf)
+		msg_ctl |= (SPI_HD_R << SPI_MSG_TYPE_SHIFT);
+	else if (t->tx_buf)
+		msg_ctl |= (SPI_HD_W << SPI_MSG_TYPE_SHIFT);
+
+	bcm_spi_writew(bs, msg_ctl, SPI_MSG_CTL);
+
+	/* Issue the transfer */
+	cmd = SPI_CMD_START_IMMEDIATE;
+	cmd |= (0 << SPI_CMD_PREPEND_BYTE_CNT_SHIFT);
+	cmd |= (spi->chip_select << SPI_CMD_DEVICE_ID_SHIFT);
+	bcm_spi_writew(bs, cmd, SPI_CMD);
+	wait_for_completion(&bs->done);
+
+	/* Disable the CMD_DONE interrupt */
+	bcm_spi_writeb(bs, 0, SPI_INT_MASK);
+
+	return t->len - bs->remaining_bytes;
+}
+
+static int bcm63xx_transfer(struct spi_device *spi, struct spi_message *m)
+{
+	struct bcm63xx_spi *bs = spi_master_get_devdata(spi->master);
+	struct spi_transfer *t;
+	int ret = 0;
+
+	if (unlikely(list_empty(&m->transfers)))
+		return -EINVAL;
+
+	if (bs->stopping)
+		return -ESHUTDOWN;
+
+	list_for_each_entry(t, &m->transfers, transfer_list) {
+		ret += bcm63xx_txrx_bufs(spi, t);
+	}
+
+	m->complete(m->context);
+
+	return ret;
+}
+
+/* This driver supports single master mode only. Hence
+ * CMD_DONE is the only interrupt we care about
+ */
+static irqreturn_t bcm63xx_spi_interrupt(int irq, void *dev_id)
+{
+	struct spi_master *master = (struct spi_master *)dev_id;
+	struct bcm63xx_spi *bs = spi_master_get_devdata(master);
+	u8 intr;
+	u16 cmd;
+
+	/* Read interupts and clear them immediately */
+	intr = bcm_spi_readb(bs, SPI_INT_STATUS);
+	bcm_spi_writeb(bs, SPI_INTR_CLEAR_ALL, SPI_INT_STATUS);
+	bcm_spi_writeb(bs, 0, SPI_INT_MASK);
+
+	/* A tansfer completed */
+	if (intr & SPI_INTR_CMD_DONE) {
+		u8 rx_tail;
+
+		rx_tail = bcm_spi_readb(bs, SPI_RX_TAIL);
+
+		/* Read out all the data */
+		if (rx_tail)
+			memcpy_fromio(bs->rx_ptr, bs->rx_io, rx_tail);
+
+		/* See if there is more data to send */
+		if (bs->remaining_bytes > 0) {
+			bcm63xx_spi_fill_tx_fifo(bs);
+
+			/* Start the transfer */
+			bcm_spi_writew(bs, SPI_HD_W << SPI_MSG_TYPE_SHIFT,
+				       SPI_MSG_CTL);
+			cmd = bcm_spi_readw(bs, SPI_CMD);
+			cmd |= SPI_CMD_START_IMMEDIATE;
+			cmd |= (0 << SPI_CMD_PREPEND_BYTE_CNT_SHIFT);
+			bcm_spi_writeb(bs, SPI_INTR_CMD_DONE, SPI_INT_MASK);
+			bcm_spi_writew(bs, cmd, SPI_CMD);
+		} else {
+			complete(&bs->done);
+		}
+	}
+
+	return IRQ_HANDLED;
+}
+
+
+static int __init bcm63xx_spi_probe(struct platform_device *pdev)
+{
+	struct resource *r;
+	struct device *dev = &pdev->dev;
+	struct bcm63xx_spi_pdata *pdata = pdev->dev.platform_data;
+	int irq;
+	struct spi_master *master;
+	struct clk *clk;
+	struct bcm63xx_spi *bs;
+	int ret;
+
+	r = platform_get_resource(pdev, IORESOURCE_MEM, 0);
+	if (!r) {
+		dev_err(dev, "no iomem\n");
+		ret = -ENXIO;
+		goto out;
+	}
+
+	irq = platform_get_irq(pdev, 0);
+	if (irq < 0) {
+		dev_err(dev, "no irq\n");
+		ret = -ENXIO;
+		goto out;
+	}
+
+	clk = clk_get(dev, "spi");
+	if (IS_ERR(clk)) {
+		dev_err(dev, "no clock for device\n");
+		ret = -ENODEV;
+		goto out;
+	}
+
+	master = spi_alloc_master(dev, sizeof(*bs));
+	if (!master) {
+		dev_err(dev, "out of memory\n");
+		ret = -ENOMEM;
+		goto out_free;
+	}
+
+	bs = spi_master_get_devdata(master);
+	init_completion(&bs->done);
+
+	platform_set_drvdata(pdev, master);
+	bs->pdev = pdev;
+
+	if (!request_mem_region(r->start, r->end - r->start, PFX)) {
+		dev_err(dev, "iomem request failed\n");
+		ret = -ENXIO;
+		goto out_put_master;
+	}
+
+	bs->regs = ioremap_nocache(r->start, r->end - r->start);
+	if (!bs->regs) {
+		dev_err(dev, "unable to ioremap regs\n");
+		ret = -ENOMEM;
+		goto out_put_master;
+	}
+	bs->irq = irq;
+	bs->clk = clk;
+	bs->fifo_size = pdata->fifo_size;
+
+	ret = request_irq(irq, bcm63xx_spi_interrupt, 0, pdev->name, master);
+	if (ret) {
+		dev_err(dev, "unable to request irq\n");
+		goto out_unmap;
+	}
+
+	master->bus_num = pdata->bus_num;
+	master->num_chipselect = pdata->num_chipselect;
+	master->setup = bcm63xx_spi_setup;
+	master->transfer = bcm63xx_transfer;
+	bs->speed_hz = pdata->speed_hz;
+	bs->stopping = 0;
+	bs->tx_io = (u8*)(bs->regs + bcm63xx_spireg(SPI_MSG_DATA));
+	bs->rx_io = (const u8*)(bs->regs + bcm63xx_spireg(SPI_RX_DATA));
+	spin_lock_init(&bs->lock);
+
+	/* Initialize hardware */
+	clk_enable(bs->clk);
+	bcm_spi_writeb(bs, SPI_INTR_CLEAR_ALL, SPI_INT_STATUS);
+
+	/* register and we are done */
+	ret = spi_register_master(master);
+	if (ret) {
+		dev_err(dev, "spi register failed\n");
+		goto out_reset_hw;
+	}
+
+	dev_info(dev, "at 0x%08x (irq %d, FIFOs size %d) v%s\n",
+		 r->start, irq, bs->fifo_size, DRV_VER);
+
+	return 0;
+
+out_reset_hw:
+	clk_disable(clk);
+	free_irq(irq, master);
+out_unmap:
+	iounmap(bs->regs);
+out_put_master:
+	spi_master_put(master);
+out_free:
+	clk_put(clk);
+out:
+	return ret;
+}
+
+static int __exit bcm63xx_spi_remove(struct platform_device *pdev)
+{
+	struct spi_master	*master = platform_get_drvdata(pdev);
+	struct bcm63xx_spi	*bs = spi_master_get_devdata(master);
+	struct resource		*r = platform_get_resource(pdev, IORESOURCE_MEM, 0);
+
+	/* reset spi block */
+	bcm_spi_writeb(bs, 0, SPI_INT_MASK);
+	spin_lock(&bs->lock);
+	bs->stopping = 1;
+
+	/* HW shutdown */
+	clk_disable(bs->clk);
+	clk_put(bs->clk);
+
+	spin_unlock(&bs->lock);
+
+	free_irq(bs->irq, master);
+	iounmap(bs->regs);
+	release_mem_region(r->start, r->end - r->start);
+	platform_set_drvdata(pdev, 0);
+	spi_unregister_master(master);
+
+	return 0;
+}
+
+#ifdef CONFIG_PM
+static int bcm63xx_spi_suspend(struct platform_device *pdev, pm_message_t mesg)
+{
+	struct spi_master	*master = platform_get_drvdata(pdev);
+	struct bcm63xx_spi	*bs = spi_master_get_devdata(master);
+
+        clk_disable(bs->clk);
+
+	return 0;
+}
+
+static int bcm63xx_spi_resume(struct platform_device *pdev)
+{
+	struct spi_master	*master = platform_get_drvdata(pdev);
+	struct bcm63xx_spi	*bs = spi_master_get_devdata(master);
+
+	clk_enable(bs->clk);
+
+	return 0;
+}
+#else
+#define bcm63xx_spi_suspend	NULL
+#define bcm63xx_spi_resume	NULL
+#endif
+
+static struct platform_driver bcm63xx_spi_driver = {
+	.driver = {
+		.name	= "bcm63xx-spi",
+		.owner	= THIS_MODULE,
+	},
+	.probe		= bcm63xx_spi_probe,
+	.remove		= __exit_p(bcm63xx_spi_remove),
+	.suspend	= bcm63xx_spi_suspend,
+	.resume		= bcm63xx_spi_resume,
+};
+
+
+static int __init bcm63xx_spi_init(void)
+{
+	return platform_driver_register(&bcm63xx_spi_driver);
+}
+
+static void __exit bcm63xx_spi_exit(void)
+{
+	platform_driver_unregister(&bcm63xx_spi_driver);
+}
+
+module_init(bcm63xx_spi_init);
+module_exit(bcm63xx_spi_exit);
+
+MODULE_ALIAS("platform:bcm63xx_spi");
+MODULE_AUTHOR("Florian Fainelli <florian@openwrt.org>");
+MODULE_AUTHOR("Tanguy Bouzeloc <tanguy.bouzeloc@efixo.com>");
+MODULE_DESCRIPTION("Broadcom BCM63xx SPI Controller driver");
+MODULE_LICENSE("GPL");
+MODULE_VERSION(DRV_VER);
--- a/drivers/spi/Kconfig
+++ b/drivers/spi/Kconfig
@@ -74,6 +74,12 @@ config SPI_ATMEL
 	  This selects a driver for the Atmel SPI Controller, present on
 	  many AT32 (AVR32) and AT91 (ARM) chips.
 
+config SPI_BCM63XX
+	tristate "Broadcom BCM63xx SPI controller"
+	depends on BCM63XX
+	help
+	  This is the SPI controller master driver for Broadcom BCM63xx SoC.
+
 config SPI_BFIN
 	tristate "SPI controller driver for ADI Blackfin5xx"
 	depends on BLACKFIN
--- a/drivers/spi/Makefile
+++ b/drivers/spi/Makefile
@@ -55,6 +55,7 @@ obj-$(CONFIG_SPI_SH_SCI)		+= spi_sh_sci.
 obj-$(CONFIG_SPI_SH_MSIOF)		+= spi_sh_msiof.o
 obj-$(CONFIG_SPI_STMP3XXX)		+= spi_stmp.o
 obj-$(CONFIG_SPI_NUC900)		+= spi_nuc900.o
+obj-$(CONFIG_SPI_BCM63XX)		+= bcm63xx_spi.o
 
 # special build for s3c24xx spi driver with fiq support
 spi_s3c24xx_hw-y			:= spi_s3c24xx.o
--- /dev/null
+++ b/arch/mips/include/asm/mach-bcm63xx/bcm63xx_dev_spi.h
@@ -0,0 +1,85 @@
+#ifndef BCM63XX_DEV_SPI_H
+#define BCM63XX_DEV_SPI_H
+
+#include <linux/types.h>
+#include <bcm63xx_io.h>
+#include <bcm63xx_regs.h>
+
+int __init bcm63xx_spi_register(void);
+
+struct bcm63xx_spi_pdata {
+	unsigned int	fifo_size;
+	int		bus_num;
+	int		num_chipselect;
+	u32		speed_hz;
+};
+
+enum bcm63xx_regs_spi {
+        SPI_CMD,
+        SPI_INT_STATUS,
+        SPI_INT_MASK_ST,
+        SPI_INT_MASK,
+        SPI_ST,
+        SPI_CLK_CFG,
+        SPI_FILL_BYTE,
+        SPI_MSG_TAIL,
+        SPI_RX_TAIL,
+        SPI_MSG_CTL,
+        SPI_MSG_DATA,
+        SPI_RX_DATA,
+};
+
+#define __GEN_SPI_RSET_BASE(__cpu, __rset)				\
+	case SPI_## __rset:						\
+		return SPI_BCM_## __cpu ##_SPI_## __rset;
+
+#define __GEN_SPI_RSET(__cpu)						\
+	switch (reg) {							\
+	__GEN_SPI_RSET_BASE(__cpu, CMD)					\
+	__GEN_SPI_RSET_BASE(__cpu, INT_STATUS)				\
+	__GEN_SPI_RSET_BASE(__cpu, INT_MASK_ST)				\
+	__GEN_SPI_RSET_BASE(__cpu, INT_MASK)				\
+	__GEN_SPI_RSET_BASE(__cpu, ST)					\
+	__GEN_SPI_RSET_BASE(__cpu, CLK_CFG)				\
+	__GEN_SPI_RSET_BASE(__cpu, FILL_BYTE)				\
+	__GEN_SPI_RSET_BASE(__cpu, MSG_TAIL)				\
+	__GEN_SPI_RSET_BASE(__cpu, RX_TAIL)				\
+	__GEN_SPI_RSET_BASE(__cpu, MSG_CTL)				\
+	__GEN_SPI_RSET_BASE(__cpu, MSG_DATA)				\
+	__GEN_SPI_RSET_BASE(__cpu, RX_DATA)				\
+	}
+
+#define __GEN_SPI_REGS_TABLE(__cpu)					\
+	[SPI_CMD]		= SPI_BCM_## __cpu ##_SPI_CMD,		\
+	[SPI_INT_STATUS]	= SPI_BCM_## __cpu ##_SPI_INT_STATUS,	\
+	[SPI_INT_MASK_ST]	= SPI_BCM_## __cpu ##_SPI_INT_MASK_ST,	\
+	[SPI_INT_MASK]		= SPI_BCM_## __cpu ##_SPI_INT_MASK,	\
+	[SPI_ST]		= SPI_BCM_## __cpu ##_SPI_ST,		\
+	[SPI_CLK_CFG]		= SPI_BCM_## __cpu ##_SPI_CLK_CFG,	\
+	[SPI_FILL_BYTE]		= SPI_BCM_## __cpu ##_SPI_FILL_BYTE,	\
+	[SPI_MSG_TAIL]		= SPI_BCM_## __cpu ##_SPI_MSG_TAIL,	\
+	[SPI_RX_TAIL]		= SPI_BCM_## __cpu ##_SPI_RX_TAIL,	\
+	[SPI_MSG_CTL]		= SPI_BCM_## __cpu ##_SPI_MSG_CTL,	\
+	[SPI_MSG_DATA]		= SPI_BCM_## __cpu ##_SPI_MSG_DATA,	\
+	[SPI_RX_DATA]		= SPI_BCM_## __cpu ##_SPI_RX_DATA,
+
+static inline unsigned long bcm63xx_spireg(enum bcm63xx_regs_spi reg)
+{
+#ifdef BCMCPU_RUNTIME_DETECT
+	extern const unsigned long *bcm63xx_regs_spi;
+        return bcm63xx_regs_spi[reg];
+#else
+#ifdef CONFIG_BCM63XX_CPU_6338
+	__GEN_SPI_RSET(6338)
+#endif
+#ifdef CONFIG_BCM63XX_CPU_6348
+	__GEN_SPI_RSET(6348)
+#endif
+#ifdef CONFIG_BCM63XX_CPU_6358
+	__GEN_SPI_RSET(6358)
+#endif
+#endif
+	return 0;
+}
+
+#endif /* BCM63XX_DEV_SPI_H */
--- a/arch/mips/bcm63xx/Makefile
+++ b/arch/mips/bcm63xx/Makefile
@@ -1,6 +1,6 @@
 obj-y		+= clk.o cpu.o cs.o gpio.o irq.o prom.o setup.o timer.o \
 		   dev-dsp.o dev-enet.o dev-pcmcia.o dev-uart.o dev-wdt.o \
-		   dev-usb-ohci.o dev-usb-ehci.o dev-usb-udc.o
+		   dev-usb-ohci.o dev-usb-ehci.o dev-usb-udc.o dev-spi.o
 obj-$(CONFIG_EARLY_PRINTK)	+= early_printk.o
 
 obj-y		+= boards/
--- a/arch/mips/bcm63xx/boards/board_bcm963xx.c
+++ b/arch/mips/bcm63xx/boards/board_bcm963xx.c
@@ -30,6 +30,7 @@
 #include <bcm63xx_dev_usb_ohci.h>
 #include <bcm63xx_dev_usb_ehci.h>
 #include <bcm63xx_dev_usb_udc.h>
+#include <bcm63xx_dev_spi.h>
 #include <board_bcm963xx.h>
 
 #define PFX	"board_bcm963xx: "
@@ -927,6 +928,8 @@ int __init board_register_devices(void)
 	if (board.num_spis)
 		spi_register_board_info(board.spis, board.num_spis);
 
+	bcm63xx_spi_register();
+
 	/* read base address of boot chip select (0) */
 	if (BCMCPU_IS_6345())
 		val = 0x1fc00000;