1 files changed, 89 insertions, 0 deletions

diff --git a/include/linux/platform_data/spi-davinci.h b/include/linux/platform_data/spi-davinci.h
new file mode 100644
index 000000000000..7af305b37868
--- /dev/null
+++ b/include/linux/platform_data/spi-davinci.h
@@ -0,0 +1,89 @@
+/*
+ * Copyright 2009 Texas Instruments.
+ *
+ * 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., 675 Mass Ave, Cambridge, MA 02139, USA.
+ */
+
+#ifndef __ARCH_ARM_DAVINCI_SPI_H
+#define __ARCH_ARM_DAVINCI_SPI_H
+
+#include <mach/edma.h>
+
+#define SPI_INTERN_CS   0xFF
+
+enum {
+        SPI_VERSION_1, /* For DM355/DM365/DM6467 */
+        SPI_VERSION_2, /* For DA8xx */
+};
+
+/**
+ * davinci_spi_platform_data - Platform data for SPI master device on DaVinci
+ *
+ * @version:    version of the SPI IP. Different DaVinci devices have slightly
+ *              varying versions of the same IP.
+ * @num_chipselect: number of chipselects supported by this SPI master
+ * @intr_line:  interrupt line used to connect the SPI IP to the ARM interrupt
+ *              controller withn the SoC. Possible values are 0 and 1.
+ * @chip_sel:   list of GPIOs which can act as chip-selects for the SPI.
+ *              SPI_INTERN_CS denotes internal SPI chip-select. Not necessary
+ *              to populate if all chip-selects are internal.
+ * @cshold_bug: set this to true if the SPI controller on your chip requires
+ *              a write to CSHOLD bit in between transfers (like in DM355).
+ * @dma_event_q: DMA event queue to use if SPI_IO_TYPE_DMA is used for any
+ *              device on the bus.
+ */
+struct davinci_spi_platform_data {
+        u8                      version;
+        u8                      num_chipselect;
+        u8                      intr_line;
+        u8                      *chip_sel;
+        bool                    cshold_bug;
+        enum dma_event_q        dma_event_q;
+};
+
+/**
+ * davinci_spi_config - Per-chip-select configuration for SPI slave devices
+ *
+ * @wdelay:     amount of delay between transmissions. Measured in number of
+ *              SPI module clocks.
+ * @odd_parity: polarity of parity flag at the end of transmit data stream.
+ *              0 - odd parity, 1 - even parity.
+ * @parity_enable: enable transmission of parity at end of each transmit
+ *              data stream.
+ * @io_type:    type of IO transfer. Choose between polled, interrupt and DMA.
+ * @timer_disable: disable chip-select timers (setup and hold)
+ * @c2tdelay:   chip-select setup time. Measured in number of SPI module clocks.
+ * @t2cdelay:   chip-select hold time. Measured in number of SPI module clocks.
+ * @t2edelay:   transmit data finished to SPI ENAn pin inactive time. Measured
+ *              in number of SPI clocks.
+ * @c2edelay:   chip-select active to SPI ENAn signal active time. Measured in
+ *              number of SPI clocks.
+ */
+struct davinci_spi_config {
+        u8      wdelay;
+        u8      odd_parity;
+        u8      parity_enable;
+#define SPI_IO_TYPE_INTR        0
+#define SPI_IO_TYPE_POLL        1
+#define SPI_IO_TYPE_DMA         2
+        u8      io_type;
+        u8      timer_disable;
+        u8      c2tdelay;
+        u8      t2cdelay;
+        u8      t2edelay;
+        u8      c2edelay;
+};
+
+#endif  /* __ARCH_ARM_DAVINCI_SPI_H */