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authorMika Westerberg <mika.westerberg@iki.fi>2010-05-06 04:47:04 +0000
committerGrant Likely <grant.likely@secretlab.ca>2010-05-25 00:23:16 -0600
commit011f23a3c2f20ae15b7664d3942493af107fe39b (patch)
treeb5dbae0b150308b29ea2545c98339532830ee479 /arch
parent1dcf57ceb461fe2ddeb622fe84d9918aadefe7ba (diff)
downloadop-kernel-dev-011f23a3c2f20ae15b7664d3942493af107fe39b.zip
op-kernel-dev-011f23a3c2f20ae15b7664d3942493af107fe39b.tar.gz
spi/ep93xx: implemented driver for Cirrus EP93xx SPI controller
This patch adds an SPI master driver for the Cirrus EP93xx SPI controller found in EP93xx chips. Signed-off-by: Mika Westerberg <mika.westerberg@iki.fi> Signed-off-by: H Hartley Sweeten <hsweeten@visionengravers.com> Acked-by: H Hartley Sweeten <hsweeten@visionengravers.com> Signed-off-by: Grant Likely <grant.likely@secretlab.ca>
Diffstat (limited to 'arch')
-rw-r--r--arch/arm/mach-ep93xx/include/mach/ep93xx_spi.h27
1 files changed, 27 insertions, 0 deletions
diff --git a/arch/arm/mach-ep93xx/include/mach/ep93xx_spi.h b/arch/arm/mach-ep93xx/include/mach/ep93xx_spi.h
new file mode 100644
index 0000000..0a37961
--- /dev/null
+++ b/arch/arm/mach-ep93xx/include/mach/ep93xx_spi.h
@@ -0,0 +1,27 @@
+#ifndef __ASM_MACH_EP93XX_SPI_H
+#define __ASM_MACH_EP93XX_SPI_H
+
+struct spi_device;
+
+/**
+ * struct ep93xx_spi_info - EP93xx specific SPI descriptor
+ * @num_chipselect: number of chip selects on this board, must be
+ * at least one
+ */
+struct ep93xx_spi_info {
+ int num_chipselect;
+};
+
+/**
+ * struct ep93xx_spi_chip_ops - operation callbacks for SPI slave device
+ * @setup: setup the chip select mechanism
+ * @cleanup: cleanup the chip select mechanism
+ * @cs_control: control the device chip select
+ */
+struct ep93xx_spi_chip_ops {
+ int (*setup)(struct spi_device *spi);
+ void (*cleanup)(struct spi_device *spi);
+ void (*cs_control)(struct spi_device *spi, int value);
+};
+
+#endif /* __ASM_MACH_EP93XX_SPI_H */
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