ENGR00180953-1: dspi: add platform support for dspi driver

Add platform support for dspi driver.

Signed-off-by: Alison Wang <b18965@freescale.com>

2 files changed, 151 insertions, 0 deletions

diff --git a/arch/arm/plat-mxc/devices/platform-mvf-spi.c b/arch/arm/plat-mxc/devices/platform-mvf-spi.c
new file mode 100644
index 000000000000..030859dcb2a9
--- /dev/null
+++ b/arch/arm/plat-mxc/devices/platform-mvf-spi.c
@@ -0,0 +1,51 @@
+/*
+ * Copyright 2012 Freescale Semiconductor, Inc.
+ *
+ * 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.
+ */
+#include <mach/hardware.h>
+#include <mach/devices-common.h>
+
+#define mvf_spi_data_entry_single(soc, type, _devid, _id, _size)	\
+	{								\
+		.devid = _devid,					\
+		.id = _id,						\
+		.iobase = soc ## _ ## type ## _id ## _BASE_ADDR,	\
+		.iosize = _size,					\
+		.irq = soc ## _INT_ ## type ## _id,			\
+	}
+
+#define mvf_spi_data_entry(soc, type, devid, id, size)			\
+	[id] = mvf_spi_data_entry_single(soc, type, devid, id, size)
+
+#ifdef CONFIG_SOC_MVFA5
+const struct imx_spi_imx_data mvf_dspi_data[] __initconst = {
+#define mvf_dspi_data_entry(_id)					\
+	mvf_spi_data_entry(MVF, DSPI, "mvf-dspi", _id, SZ_4K)
+	mvf_dspi_data_entry(0),
+	mvf_dspi_data_entry(1),
+	mvf_dspi_data_entry(2),
+	mvf_dspi_data_entry(3),
+};
+#endif /* ifdef CONFIG_SOC_MVF */
+
+struct platform_device *__init mvf_add_spi_mvf(
+		const struct imx_spi_imx_data *data,
+		const struct spi_mvf_master *pdata)
+{
+	struct resource res[] = {
+		{
+			.start = data->iobase,
+			.end = data->iobase + data->iosize - 1,
+			.flags = IORESOURCE_MEM,
+		}, {
+			.start = data->irq,
+			.end = data->irq,
+			.flags = IORESOURCE_IRQ,
+		},
+	};
+	return imx_add_platform_device(data->devid, data->id,
+			res, ARRAY_SIZE(res), pdata, sizeof(*pdata));
+}
diff --git a/arch/arm/plat-mxc/include/mach/spi-mvf.h b/arch/arm/plat-mxc/include/mach/spi-mvf.h
new file mode 100644
index 000000000000..4db9f9502661
--- /dev/null
+++ b/arch/arm/plat-mxc/include/mach/spi-mvf.h
@@ -0,0 +1,100 @@
+/*
+ * Copyright 2012 Freescale Semiconductor, Inc.
+ *
+ * This file is based on mcfqspi.h
+ *
+ * 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.
+ */
+
+#ifndef SPI_MVF_H_
+#define SPI_MVF_H_
+
+struct spi_mvf_chip {
+	u8 mode;
+	u8 bits_per_word;
+	u16 void_write_data;
+	/* Only used in master mode */
+	u8 dbr;		/* Double baud rate */
+	u8 pbr;		/* Baud rate prescaler */
+	u8 br;		/* Baud rate scaler */
+	u8 pcssck;	/* PCS to SCK delay prescaler */
+	u8 pasc;	/* After SCK delay prescaler */
+	u8 pdt;		/* Delay after transfer prescaler */
+	u8 cssck;	/* PCS to SCK delay scaler */
+	u8 asc;		/* After SCK delay scaler */
+	u8 dt;		/* Delay after transfer scaler */
+};
+
+struct spi_mvf_master {
+	u16 bus_num;
+	int *chipselect;
+	int num_chipselect;
+	void (*cs_control)(u8 cs, u8 command);
+};
+
+
+#define	SPI_MCR			0x00
+
+#define SPI_TCR			0x08
+
+#define SPI_CTAR(x)		(0x0c + (x * 4))
+#define SPI_CTAR_FMSZ(x)	(((x) & 0x0000000f) << 27)
+#define SPI_CTAR_CPOL(x)	((x) << 26)
+#define SPI_CTAR_CPHA(x)	((x) << 25)
+#define SPI_CTAR_PCSSCR(x)	(((x) & 0x00000003) << 22)
+#define SPI_CTAR_PASC(x)	(((x) & 0x00000003) << 20)
+#define SPI_CTAR_PDT(x)		(((x) & 0x00000003) << 18)
+#define SPI_CTAR_PBR(x)		(((x) & 0x00000003) << 16)
+#define SPI_CTAR_CSSCK(x)	(((x) & 0x0000000f) << 12)
+#define SPI_CTAR_ASC(x)		(((x) & 0x0000000f) << 8)
+#define SPI_CTAR_DT(x)		(((x) & 0x0000000f) << 4)
+#define SPI_CTAR_BR(x)		((x) & 0x0000000f)
+
+#define SPI_CTAR0_SLAVE		0x0c
+
+#define SPI_SR			0x2c
+#define SPI_SR_EOQF		0x10000000
+
+#define SPI_RSER		0x30
+#define SPI_RSER_EOQFE		0x10000000
+
+#define SPI_PUSHR		0x34
+#define SPI_PUSHR_CONT		(1 << 31)
+#define SPI_PUSHR_CTAS(x)	(((x) & 0x00000007) << 28)
+#define SPI_PUSHR_EOQ		(1 << 27)
+#define SPI_PUSHR_CTCNT		(1 << 26)
+#define SPI_PUSHR_PCS(x)	(((x) & 0x0000003f) << 16)
+#define SPI_PUSHR_TXDATA(x)	((x) & 0x0000ffff)
+
+#define SPI_PUSHR_SLAVE		0x34
+
+#define SPI_POPR		0x38
+#define SPI_POPR_RXDATA(x)	((x) & 0x0000ffff)
+
+#define SPI_TXFR0		0x3c
+#define SPI_TXFR1		0x40
+#define SPI_TXFR2		0x44
+#define SPI_TXFR3		0x48
+#define SPI_RXFR0		0x7c
+#define SPI_RXFR1		0x80
+#define SPI_RXFR2		0x84
+#define SPI_RXFR3		0x88
+
+
+#define SPI_FRAME_BITS		SPI_CTAR_FMSZ(0xf)
+#define SPI_FRAME_BITS_16	SPI_CTAR_FMSZ(0xf)
+#define SPI_FRAME_BITS_8	SPI_CTAR_FMSZ(0xf)
+
+#define SPI_CS_INIT		0x01
+#define SPI_CS_ASSERT		0x02
+#define SPI_CS_DROP		0x04
+
+#endif /* SPI_MVF_H_ */