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authorArnd Bergmann <arnd@arndb.de>2012-08-24 15:11:34 +0200
committerArnd Bergmann <arnd@arndb.de>2012-09-14 11:16:54 +0200
commitec2a0833e5157fab6cac5f57a49b2f31eb418a39 (patch)
treeeb47117208522948df0cd36ad3012c9e716b74c2 /include/linux/platform_data/spi-davinci.h
parent7cdc39eeadf11824b62f65c22de60aca611b0744 (diff)
downloadop-kernel-dev-ec2a0833e5157fab6cac5f57a49b2f31eb418a39.zip
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ARM: davinci: move platform_data definitions
Platform data for device drivers should be defined in include/linux/platform_data/*.h, not in the architecture and platform specific directories. This moves such data out of the davinci include directories Signed-off-by: Arnd Bergmann <arnd@arndb.de> Acked-by: Mark Brown <broonie@opensource.wolfsonmicro.com> Acked-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org> Acked-by: Nicolas Pitre <nico@linaro.org> Acked-by: Mauro Carvalho Chehab <mchehab@redhat.com> Acked-by: Felipe Balbi <balbi@ti.com> Cc: Sekhar Nori <nsekhar@ti.com> Cc: Kevin Hilman <khilman@ti.com> Cc: "Ben Dooks" <ben-linux@fluff.org> Cc: "Wolfram Sang" <w.sang@pengutronix.de> Cc: Dmitry Torokhov <dmitry.torokhov@gmail.com> Cc: Chris Ball <cjb@laptop.org> Cc: David Woodhouse <dwmw2@infradead.org> Cc: Grant Likely <grant.likely@secretlab.ca> Cc: Alan Stern <stern@rowland.harvard.edu> Cc: Liam Girdwood <lrg@ti.com> Cc: davinci-linux-open-source@linux.davincidsp.com
Diffstat (limited to 'include/linux/platform_data/spi-davinci.h')
-rw-r--r--include/linux/platform_data/spi-davinci.h89
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 0000000..7af305b
--- /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 */
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