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authorAlison Wang <b18965@freescale.com>2012-07-27 11:29:40 +0800
committerJustin Waters <justin.waters@timesys.com>2012-09-12 16:49:53 -0400
commit76fe9bb56f1652a4f5918d7fdd27797d17d3716a (patch)
tree3ac5576a2d0b42687d618c9da33ec5d241b8c5cd /arch
parent74a8bbab14c2f5e9e1fd3a263b090484a988f673 (diff)
ENGR00180953-1: dspi: add platform support for dspi driver
Add platform support for dspi driver. Signed-off-by: Alison Wang <b18965@freescale.com>
Diffstat (limited to 'arch')
-rw-r--r--arch/arm/plat-mxc/devices/platform-mvf-spi.c51
-rw-r--r--arch/arm/plat-mxc/include/mach/spi-mvf.h100
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_ */