[PATCH 8/8] drivers/spi: add driver for the Multichannel SPI controller found in TI SoCs
Jan Luebbe
jlu at pengutronix.de
Wed Sep 5 11:52:16 EDT 2012
Also create devices for OMAP3.
Signed-off-by: Jan Luebbe <jlu at pengutronix.de>
---
arch/arm/mach-omap/include/mach/mcspi.h | 11 +
arch/arm/mach-omap/include/mach/omap3-devices.h | 32 ++
drivers/spi/Kconfig | 6 +
drivers/spi/Makefile | 1 +
drivers/spi/omap3_spi.c | 399 +++++++++++++++++++++++
drivers/spi/omap3_spi.h | 100 ++++++
6 files changed, 549 insertions(+)
create mode 100644 arch/arm/mach-omap/include/mach/mcspi.h
create mode 100644 arch/arm/mach-omap/include/mach/omap3-devices.h
create mode 100644 drivers/spi/omap3_spi.c
create mode 100644 drivers/spi/omap3_spi.h
diff --git a/arch/arm/mach-omap/include/mach/mcspi.h b/arch/arm/mach-omap/include/mach/mcspi.h
new file mode 100644
index 0000000..dbde67a
--- /dev/null
+++ b/arch/arm/mach-omap/include/mach/mcspi.h
@@ -0,0 +1,11 @@
+#ifndef __OMAP_MCSPI_H
+#define __OMAP_MCSPI_H
+
+#define OMAP3_MCSPI1_BASE 0x48098000
+#define OMAP3_MCSPI2_BASE 0x4809A000
+#define OMAP3_MCSPI3_BASE 0x480B8000
+#define OMAP3_MCSPI4_BASE 0x480BA000
+
+int mcspi_devices_init(void);
+
+#endif /* __OMAP_MCSPI_H */
diff --git a/arch/arm/mach-omap/include/mach/omap3-devices.h b/arch/arm/mach-omap/include/mach/omap3-devices.h
new file mode 100644
index 0000000..8a6b324
--- /dev/null
+++ b/arch/arm/mach-omap/include/mach/omap3-devices.h
@@ -0,0 +1,32 @@
+#include <driver.h>
+#include <sizes.h>
+
+#include <mach/mcspi.h>
+
+/* the device numbering is the same as in the device tree */
+
+static inline struct device_d *omap3_add_spi(int id, resource_size_t start)
+{
+ return add_generic_device("omap3_spi", id, NULL, start, SZ_4K,
+ IORESOURCE_MEM, NULL);
+}
+
+static inline struct device_d *omap3_add_spi1(void)
+{
+ return omap3_add_spi(1, OMAP3_MCSPI1_BASE);
+}
+
+static inline struct device_d *omap3_add_spi2(void)
+{
+ return omap3_add_spi(2, OMAP3_MCSPI2_BASE);
+}
+
+static inline struct device_d *omap3_add_spi3(void)
+{
+ return omap3_add_spi(3, OMAP3_MCSPI3_BASE);
+}
+
+static inline struct device_d *omap3_add_spi4(void)
+{
+ return omap3_add_spi(4, OMAP3_MCSPI4_BASE);
+}
diff --git a/drivers/spi/Kconfig b/drivers/spi/Kconfig
index b5c55a4..dc17ead 100644
--- a/drivers/spi/Kconfig
+++ b/drivers/spi/Kconfig
@@ -34,4 +34,10 @@ config DRIVER_SPI_ATMEL
depends on ARCH_AT91
depends on SPI
+
+config DRIVER_SPI_OMAP3
+ bool "OMAP3 McSPI Master driver"
+ depends on ARCH_OMAP3
+ depends on SPI
+
endmenu
diff --git a/drivers/spi/Makefile b/drivers/spi/Makefile
index 101652f..b53061e 100644
--- a/drivers/spi/Makefile
+++ b/drivers/spi/Makefile
@@ -2,3 +2,4 @@ obj-$(CONFIG_SPI) += spi.o
obj-$(CONFIG_DRIVER_SPI_IMX) += imx_spi.o
obj-$(CONFIG_DRIVER_SPI_ALTERA) += altera_spi.o
obj-$(CONFIG_DRIVER_SPI_ATMEL) += atmel_spi.o
+obj-$(CONFIG_DRIVER_SPI_OMAP3) += omap3_spi.o
diff --git a/drivers/spi/omap3_spi.c b/drivers/spi/omap3_spi.c
new file mode 100644
index 0000000..c789bba
--- /dev/null
+++ b/drivers/spi/omap3_spi.c
@@ -0,0 +1,399 @@
+/*
+ * Copyright (C) 2012 Jan Luebbe <j.luebbe at pengutronix.de>
+ *
+ * Copyright (C) 2010 Dirk Behme <dirk.behme at googlemail.com>
+ *
+ * Driver for McSPI controller on OMAP3. Based on davinci_spi.c
+ * Copyright (C) 2009 Texas Instruments Incorporated - http://www.ti.com/
+ *
+ * Copyright (C) 2007 Atmel Corporation
+ *
+ * Parts taken from linux/drivers/spi/omap2_mcspi.c
+ * Copyright (C) 2005, 2006 Nokia Corporation
+ *
+ * Modified by Ruslan Araslanov <ruslan.araslanov at vitecmm.com>
+ *
+ * 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., 59 Temple Place, Suite 330, Boston,
+ * MA 02111-1307 USA
+ *
+ */
+
+#include <common.h>
+#include <init.h>
+#include <driver.h>
+#include <clock.h>
+#include <errno.h>
+#include <spi/spi.h>
+#include <malloc.h>
+#include <io.h>
+#include "omap3_spi.h"
+
+#define WORD_LEN 8
+#define SPI_WAIT_TIMEOUT MSECOND
+
+#define SPI_XFER_BEGIN 0x01 /* Assert CS before transfer */
+#define SPI_XFER_END 0x02 /* Deassert CS after transfer */
+
+static void spi_reset(struct spi_master *master)
+{
+ struct omap3_spi_master *omap3_master = container_of(master, struct omap3_spi_master, master);
+ struct mcspi __iomem *regs = omap3_master->regs;
+ unsigned int tmp;
+
+ writel(OMAP3_MCSPI_SYSCONFIG_SOFTRESET, ®s->sysconfig);
+ do {
+ tmp = readl(®s->sysstatus);
+ } while (!(tmp & OMAP3_MCSPI_SYSSTATUS_RESETDONE));
+
+ writel(OMAP3_MCSPI_SYSCONFIG_AUTOIDLE |
+ OMAP3_MCSPI_SYSCONFIG_ENAWAKEUP |
+ OMAP3_MCSPI_SYSCONFIG_SMARTIDLE,
+ ®s->sysconfig);
+
+ writel(OMAP3_MCSPI_WAKEUPENABLE_WKEN, ®s->wakeupenable);
+}
+
+int spi_claim_bus(struct spi_device *spi)
+{
+ struct spi_master *master = spi->master;
+ struct omap3_spi_master *omap3_master = container_of(master, struct omap3_spi_master, master);
+ struct mcspi __iomem *regs = omap3_master->regs;
+ unsigned int conf, div = 0;
+
+ /* McSPI global module configuration */
+
+ /*
+ * setup when switching from (reset default) slave mode
+ * to single-channel master mode
+ */
+ conf = readl(®s->modulctrl);
+ conf &= ~(OMAP3_MCSPI_MODULCTRL_STEST | OMAP3_MCSPI_MODULCTRL_MS);
+ conf |= OMAP3_MCSPI_MODULCTRL_SINGLE;
+ writel(conf, ®s->modulctrl);
+
+ /* McSPI individual channel configuration */
+
+ /* Calculate clock divisor. Valid range: 0x0 - 0xC ( /1 - /4096 ) */
+ if (spi->max_speed_hz) {
+ while (div <= 0xC && (OMAP3_MCSPI_MAX_FREQ / (1 << div))
+ > spi->max_speed_hz)
+ div++;
+ } else {
+ div = 0xC;
+ }
+
+ conf = readl(®s->channel[spi->chip_select].chconf);
+
+ /* standard 4-wire master mode: SCK, MOSI/out, MISO/in, nCS
+ * REVISIT: this controller could support SPI_3WIRE mode.
+ */
+ conf &= ~(OMAP3_MCSPI_CHCONF_IS|OMAP3_MCSPI_CHCONF_DPE1);
+ conf |= OMAP3_MCSPI_CHCONF_DPE0;
+
+ /* wordlength */
+ conf &= ~OMAP3_MCSPI_CHCONF_WL_MASK;
+ conf |= (WORD_LEN - 1) << 7;
+
+ /* set chipselect polarity; manage with FORCE */
+ if (!(spi->mode & SPI_CS_HIGH))
+ conf |= OMAP3_MCSPI_CHCONF_EPOL; /* active-low; normal */
+ else
+ conf &= ~OMAP3_MCSPI_CHCONF_EPOL;
+
+ /* set clock divisor */
+ conf &= ~OMAP3_MCSPI_CHCONF_CLKD_MASK;
+ conf |= div << 2;
+
+ /* set SPI mode 0..3 */
+ if (spi->mode & SPI_CPOL)
+ conf |= OMAP3_MCSPI_CHCONF_POL;
+ else
+ conf &= ~OMAP3_MCSPI_CHCONF_POL;
+ if (spi->mode & SPI_CPHA)
+ conf |= OMAP3_MCSPI_CHCONF_PHA;
+ else
+ conf &= ~OMAP3_MCSPI_CHCONF_PHA;
+
+ /* Transmit & receive mode */
+ conf &= ~OMAP3_MCSPI_CHCONF_TRM_MASK;
+
+ writel(conf, ®s->channel[spi->chip_select].chconf);
+ readl(®s->channel[spi->chip_select].chconf);
+
+ return 0;
+}
+
+int omap3_spi_write(struct spi_device *spi, unsigned int len, const u8 *txp,
+ unsigned long flags)
+{
+ struct spi_master *master = spi->master;
+ struct omap3_spi_master *omap3_master = container_of(master, struct omap3_spi_master, master);
+ struct mcspi __iomem *regs = omap3_master->regs;
+ int i;
+ uint64_t timer_start;
+ int chconf = readl(®s->channel[spi->chip_select].chconf);
+
+ if (flags & SPI_XFER_BEGIN)
+ writel(OMAP3_MCSPI_CHCTRL_EN,
+ ®s->channel[spi->chip_select].chctrl);
+
+ chconf &= ~OMAP3_MCSPI_CHCONF_TRM_MASK;
+ chconf |= OMAP3_MCSPI_CHCONF_TRM_TX_ONLY;
+ chconf |= OMAP3_MCSPI_CHCONF_FORCE;
+ writel(chconf, ®s->channel[spi->chip_select].chconf);
+ readl(®s->channel[spi->chip_select].chconf);
+
+ for (i = 0; i < len; i++) {
+ /* wait till TX register is empty (TXS == 1) */
+ timer_start = get_time_ns();
+ while (!(readl(®s->channel[spi->chip_select].chstat) &
+ OMAP3_MCSPI_CHSTAT_TXS)) {
+ if (is_timeout(timer_start, SPI_WAIT_TIMEOUT)) {
+ printf("SPI TXS timed out, status=0x%08x\n",
+ readl(®s->channel[spi->chip_select].chstat));
+ return -ETIMEDOUT;
+ }
+ }
+ /* write the data */
+ writel(txp[i], ®s->channel[spi->chip_select].tx);
+ }
+
+ if (flags & SPI_XFER_END) {
+ /* wait to finish of transfer */
+ while (!(readl(®s->channel[spi->chip_select].chstat) &
+ OMAP3_MCSPI_CHSTAT_EOT));
+
+ chconf &= ~OMAP3_MCSPI_CHCONF_FORCE;
+ writel(chconf, ®s->channel[spi->chip_select].chconf);
+
+ writel(0, ®s->channel[spi->chip_select].chctrl);
+ }
+
+ while (!(readl(®s->channel[spi->chip_select].chstat) &
+ OMAP3_MCSPI_CHSTAT_TXS));
+ while (!(readl(®s->channel[spi->chip_select].chstat) &
+ OMAP3_MCSPI_CHSTAT_EOT));
+
+ return 0;
+}
+
+int omap3_spi_read(struct spi_device *spi, unsigned int len, u8 *rxp,
+ unsigned long flags)
+{
+ struct spi_master *master = spi->master;
+ struct omap3_spi_master *omap3_master = container_of(master, struct omap3_spi_master, master);
+ struct mcspi __iomem *regs = omap3_master->regs;
+ int i;
+ uint64_t timer_start;
+ int chconf = readl(®s->channel[spi->chip_select].chconf);
+
+ if (flags & SPI_XFER_BEGIN)
+ writel(OMAP3_MCSPI_CHCTRL_EN,
+ ®s->channel[spi->chip_select].chctrl);
+
+ chconf &= ~OMAP3_MCSPI_CHCONF_TRM_MASK;
+ chconf |= OMAP3_MCSPI_CHCONF_TRM_RX_ONLY;
+ chconf |= OMAP3_MCSPI_CHCONF_FORCE;
+ writel(chconf, ®s->channel[spi->chip_select].chconf);
+ readl(®s->channel[spi->chip_select].chconf);
+ writel(0, ®s->channel[spi->chip_select].tx);
+
+ for (i = 0; i < len; i++) {
+ /* wait till RX register contains data (RXS == 1) */
+ timer_start = get_time_ns();
+ while (!(readl(®s->channel[spi->chip_select].chstat) &
+ OMAP3_MCSPI_CHSTAT_RXS)) {
+ if (is_timeout(timer_start, SPI_WAIT_TIMEOUT)) {
+ printf("SPI RXS timed out, status=0x%08x\n",
+ readl(®s->channel[spi->chip_select].chstat));
+ return -ETIMEDOUT;
+ }
+ }
+ /* read the data */
+ rxp[i] = readl(®s->channel[spi->chip_select].rx);
+ }
+
+ if (flags & SPI_XFER_END) {
+ chconf &= ~OMAP3_MCSPI_CHCONF_FORCE;
+ writel(chconf, ®s->channel[spi->chip_select].chconf);
+ readl(®s->channel[spi->chip_select].chconf);
+
+ writel(0, ®s->channel[spi->chip_select].chctrl);
+ }
+
+ return 0;
+}
+
+int spi_xfer(struct spi_device *spi, struct spi_transfer *t, unsigned long flags)
+{
+ struct spi_master *master = spi->master;
+ struct omap3_spi_master *omap3_master = container_of(master, struct omap3_spi_master, master);
+ struct mcspi __iomem *regs = omap3_master->regs;
+ unsigned int len = t->len;
+ int ret;
+ const u8 *txp = t->tx_buf; /* can be NULL for read operation */
+ u8 *rxp = t->rx_buf; /* can be NULL for write operation */
+
+ if (len == 0) { /* only change CS */
+ int chconf = readl(®s->channel[spi->chip_select].chconf);
+
+ if (flags & SPI_XFER_BEGIN) {
+ writel(OMAP3_MCSPI_CHCTRL_EN,
+ ®s->channel[spi->chip_select].chctrl);
+ chconf |= OMAP3_MCSPI_CHCONF_FORCE;
+ writel(chconf,
+ ®s->channel[spi->chip_select].chconf);
+ readl(®s->channel[spi->chip_select].chconf);
+ }
+
+ if (flags & SPI_XFER_END) {
+ chconf &= ~OMAP3_MCSPI_CHCONF_FORCE;
+ writel(chconf,
+ ®s->channel[spi->chip_select].chconf);
+ writel(0, ®s->channel[spi->chip_select].chctrl);
+ readl(®s->channel[spi->chip_select].chconf);
+ }
+
+ ret = 0;
+ } else if ((t->tx_buf != NULL) && (t->rx_buf != NULL)) {
+ printf("SPI error: full duplex unsupported\n");
+ ret = -EINVAL;
+ } else if (t->tx_buf != NULL) {
+ ret = omap3_spi_write(spi, len, txp, flags);
+ } else if (t->rx_buf != NULL) {
+ ret = omap3_spi_read(spi, len, rxp, flags);
+ } else {
+ printf("SPI error: neither tx_buf nor rx_buf set\n");
+ ret = -EINVAL;
+ }
+ return ret;
+}
+
+static int omap3_spi_transfer(struct spi_device *spi, struct spi_message *mesg)
+{
+ struct spi_master *master = spi->master;
+ struct spi_transfer *t, *t_first, *t_last = NULL;
+ unsigned long flags;
+ int ret = 0;
+
+ ret = spi_claim_bus(spi);
+ if (ret)
+ return ret;
+
+ if (list_empty(&mesg->transfers))
+ return 0;
+
+ t_first = list_first_entry(&mesg->transfers, struct spi_transfer, transfer_list);
+ t_last = list_last_entry(&mesg->transfers, struct spi_transfer, transfer_list);
+
+ mesg->actual_length = 0;
+
+ dev_dbg(master->dev, "transfer start actual_length=%i\n", mesg->actual_length);
+ list_for_each_entry(t, &mesg->transfers, transfer_list) {
+ dev_dbg(master->dev,
+ " xfer %p: len %u tx %p rx %p\n",
+ t, t->len, t->tx_buf, t->rx_buf);
+ flags = 0;
+ if (t == t_first)
+ flags |= SPI_XFER_BEGIN;
+ if (t == t_last)
+ flags |= SPI_XFER_END;
+ ret = spi_xfer(spi, t, flags);
+ if (ret < 0)
+ return ret;
+ mesg->actual_length += t->len;
+ }
+ dev_dbg(master->dev, "transfer done actual_length=%i\n", mesg->actual_length);
+
+ return ret;
+}
+
+static int omap3_spi_setup(struct spi_device *spi)
+{
+ struct spi_master *master = spi->master;
+
+ if (((master->bus_num == 0) && (spi->chip_select > 3)) ||
+ ((master->bus_num == 1) && (spi->chip_select > 1)) ||
+ ((master->bus_num == 2) && (spi->chip_select > 1)) ||
+ ((master->bus_num == 3) && (spi->chip_select > 0))) {
+ printf("SPI error: unsupported chip select %i \
+ on bus %i\n", spi->chip_select, master->bus_num);
+ return -EINVAL;
+ }
+
+ if (spi->max_speed_hz > OMAP3_MCSPI_MAX_FREQ) {
+ printf("SPI error: unsupported frequency %i Hz. \
+ Max frequency is 48 Mhz\n", spi->max_speed_hz);
+ return -EINVAL;
+ }
+
+ if (spi->mode > SPI_MODE_3) {
+ printf("SPI error: unsupported SPI mode %i\n", spi->mode);
+ return -EINVAL;
+ }
+
+ return 0;
+}
+
+static int omap3_spi_probe(struct device_d *dev)
+{
+ struct spi_master *master;
+ struct omap3_spi_master *omap3_master;
+
+ omap3_master = xzalloc(sizeof(*omap3_master));
+
+ master = &omap3_master->master;
+ master->dev = dev;
+
+ /*
+ * OMAP3 McSPI (MultiChannel SPI) has 4 busses (modules)
+ * with different number of chip selects (CS, channels):
+ * McSPI1 has 4 CS (bus 0, cs 0 - 3)
+ * McSPI2 has 2 CS (bus 1, cs 0 - 1)
+ * McSPI3 has 2 CS (bus 2, cs 0 - 1)
+ * McSPI4 has 1 CS (bus 3, cs 0)
+ *
+ * The board code has to make sure that it does not use
+ * invalid buses or chip selects.
+ */
+
+ master->bus_num = dev->id;
+ master->num_chipselect = 4;
+ master->setup = omap3_spi_setup;
+ master->transfer = omap3_spi_transfer;
+
+ omap3_master->regs = (struct mcspi *)dev_request_mem_region(dev, 0);;
+
+ spi_reset(master);
+
+ spi_register_master(master);
+
+ return 0;
+}
+
+static struct driver_d omap3_spi_driver = {
+ .name = "omap3_spi",
+ .probe = omap3_spi_probe,
+};
+
+static int omap3_spi_init(void)
+{
+ return register_driver(&omap3_spi_driver);
+}
+
+device_initcall(omap3_spi_init);
diff --git a/drivers/spi/omap3_spi.h b/drivers/spi/omap3_spi.h
new file mode 100644
index 0000000..2ad8ef7
--- /dev/null
+++ b/drivers/spi/omap3_spi.h
@@ -0,0 +1,100 @@
+/*
+ * Register definitions for the OMAP3 McSPI Controller
+ *
+ * Copyright (C) 2010 Dirk Behme <dirk.behme at googlemail.com>
+ *
+ * Parts taken from linux/drivers/spi/omap2_mcspi.c
+ * Copyright (C) 2005, 2006 Nokia Corporation
+ *
+ * Modified by Ruslan Araslanov <ruslan.araslanov at vitecmm.com>
+ *
+ * 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., 59 Temple Place, Suite 330, Boston,
+ * MA 02111-1307 USA
+ */
+
+#ifndef _OMAP3_SPI_H_
+#define _OMAP3_SPI_H_
+
+#define OMAP3_MCSPI_MAX_FREQ 48000000
+
+/* OMAP3 McSPI registers */
+struct mcspi_channel {
+ unsigned int chconf; /* 0x2C, 0x40, 0x54, 0x68 */
+ unsigned int chstat; /* 0x30, 0x44, 0x58, 0x6C */
+ unsigned int chctrl; /* 0x34, 0x48, 0x5C, 0x70 */
+ unsigned int tx; /* 0x38, 0x4C, 0x60, 0x74 */
+ unsigned int rx; /* 0x3C, 0x50, 0x64, 0x78 */
+};
+
+struct mcspi {
+ unsigned char res1[0x10];
+ unsigned int sysconfig; /* 0x10 */
+ unsigned int sysstatus; /* 0x14 */
+ unsigned int irqstatus; /* 0x18 */
+ unsigned int irqenable; /* 0x1C */
+ unsigned int wakeupenable; /* 0x20 */
+ unsigned int syst; /* 0x24 */
+ unsigned int modulctrl; /* 0x28 */
+ struct mcspi_channel channel[4]; /* channel0: 0x2C - 0x3C, bus 0 & 1 & 2 & 3 */
+ /* channel1: 0x40 - 0x50, bus 0 & 1 */
+ /* channel2: 0x54 - 0x64, bus 0 & 1 */
+ /* channel3: 0x68 - 0x78, bus 0 */
+};
+
+/* per-register bitmasks */
+#define OMAP3_MCSPI_SYSCONFIG_SMARTIDLE (2 << 3)
+#define OMAP3_MCSPI_SYSCONFIG_ENAWAKEUP (1 << 2)
+#define OMAP3_MCSPI_SYSCONFIG_AUTOIDLE (1 << 0)
+#define OMAP3_MCSPI_SYSCONFIG_SOFTRESET (1 << 1)
+
+#define OMAP3_MCSPI_SYSSTATUS_RESETDONE (1 << 0)
+
+#define OMAP3_MCSPI_MODULCTRL_SINGLE (1 << 0)
+#define OMAP3_MCSPI_MODULCTRL_MS (1 << 2)
+#define OMAP3_MCSPI_MODULCTRL_STEST (1 << 3)
+
+#define OMAP3_MCSPI_CHCONF_PHA (1 << 0)
+#define OMAP3_MCSPI_CHCONF_POL (1 << 1)
+#define OMAP3_MCSPI_CHCONF_CLKD_MASK (0x0f << 2)
+#define OMAP3_MCSPI_CHCONF_EPOL (1 << 6)
+#define OMAP3_MCSPI_CHCONF_WL_MASK (0x1f << 7)
+#define OMAP3_MCSPI_CHCONF_TRM_RX_ONLY (0x01 << 12)
+#define OMAP3_MCSPI_CHCONF_TRM_TX_ONLY (0x02 << 12)
+#define OMAP3_MCSPI_CHCONF_TRM_MASK (0x03 << 12)
+#define OMAP3_MCSPI_CHCONF_DMAW (1 << 14)
+#define OMAP3_MCSPI_CHCONF_DMAR (1 << 15)
+#define OMAP3_MCSPI_CHCONF_DPE0 (1 << 16)
+#define OMAP3_MCSPI_CHCONF_DPE1 (1 << 17)
+#define OMAP3_MCSPI_CHCONF_IS (1 << 18)
+#define OMAP3_MCSPI_CHCONF_TURBO (1 << 19)
+#define OMAP3_MCSPI_CHCONF_FORCE (1 << 20)
+
+#define OMAP3_MCSPI_CHSTAT_RXS (1 << 0)
+#define OMAP3_MCSPI_CHSTAT_TXS (1 << 1)
+#define OMAP3_MCSPI_CHSTAT_EOT (1 << 2)
+
+#define OMAP3_MCSPI_CHCTRL_EN (1 << 0)
+
+#define OMAP3_MCSPI_WAKEUPENABLE_WKEN (1 << 0)
+
+struct omap3_spi_master {
+ struct spi_master master;
+ struct mcspi __iomem *regs;
+};
+
+#endif /* _OMAP3_SPI_H_ */
--
1.7.10.4
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