+++ /dev/null
-/*
- * include/linux/spi/spidev.h
- *
- * Copyright (C) 2006 SWAPP
- * Andrea Paterniani <a.paterniani@swapp-eng.it>
- *
- * 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 SPIDEV_H
-#define SPIDEV_H
-
-#include <linux/types.h>
-
-/* User space versions of kernel symbols for SPI clocking modes,
- * matching <linux/spi/spi.h>
- */
-
-#define SPI_CPHA 0x01
-#define SPI_CPOL 0x02
-
-#define SPI_MODE_0 (0|0)
-#define SPI_MODE_1 (0|SPI_CPHA)
-#define SPI_MODE_2 (SPI_CPOL|0)
-#define SPI_MODE_3 (SPI_CPOL|SPI_CPHA)
-
-#define SPI_CS_HIGH 0x04
-#define SPI_LSB_FIRST 0x08
-#define SPI_3WIRE 0x10
-#define SPI_LOOP 0x20
-#define SPI_NO_CS 0x40
-#define SPI_READY 0x80
-
-/*---------------------------------------------------------------------------*/
-
-/* IOCTL commands */
-
-#define SPI_IOC_MAGIC 'k'
-
-/**
- * struct spi_ioc_transfer - describes a single SPI transfer
- * @tx_buf: Holds pointer to userspace buffer with transmit data, or null.
- * If no data is provided, zeroes are shifted out.
- * @rx_buf: Holds pointer to userspace buffer for receive data, or null.
- * @len: Length of tx and rx buffers, in bytes.
- * @speed_hz: Temporary override of the device's bitrate.
- * @bits_per_word: Temporary override of the device's wordsize.
- * @delay_usecs: If nonzero, how long to delay after the last bit transfer
- * before optionally deselecting the device before the next transfer.
- * @cs_change: True to deselect device before starting the next transfer.
- *
- * This structure is mapped directly to the kernel spi_transfer structure;
- * the fields have the same meanings, except of course that the pointers
- * are in a different address space (and may be of different sizes in some
- * cases, such as 32-bit i386 userspace over a 64-bit x86_64 kernel).
- * Zero-initialize the structure, including currently unused fields, to
- * accommodate potential future updates.
- *
- * SPI_IOC_MESSAGE gives userspace the equivalent of kernel spi_sync().
- * Pass it an array of related transfers, they'll execute together.
- * Each transfer may be half duplex (either direction) or full duplex.
- *
- * struct spi_ioc_transfer mesg[4];
- * ...
- * status = ioctl(fd, SPI_IOC_MESSAGE(4), mesg);
- *
- * So for example one transfer might send a nine bit command (right aligned
- * in a 16-bit word), the next could read a block of 8-bit data before
- * terminating that command by temporarily deselecting the chip; the next
- * could send a different nine bit command (re-selecting the chip), and the
- * last transfer might write some register values.
- */
-struct spi_ioc_transfer {
- __u64 tx_buf;
- __u64 rx_buf;
-
- __u32 len;
- __u32 speed_hz;
-
- __u16 delay_usecs;
- __u8 bits_per_word;
- __u8 cs_change;
- __u32 pad;
-
- /* If the contents of 'struct spi_ioc_transfer' ever change
- * incompatibly, then the ioctl number (currently 0) must change;
- * ioctls with constant size fields get a bit more in the way of
- * error checking than ones (like this) where that field varies.
- *
- * NOTE: struct layout is the same in 64bit and 32bit userspace.
- */
-};
-
-/* not all platforms use <asm-generic/ioctl.h> or _IOC_TYPECHECK() ... */
-#define SPI_MSGSIZE(N) \
- ((((N)*(sizeof (struct spi_ioc_transfer))) < (1 << _IOC_SIZEBITS)) \
- ? ((N)*(sizeof (struct spi_ioc_transfer))) : 0)
-#define SPI_IOC_MESSAGE(N) _IOW(SPI_IOC_MAGIC, 0, char[SPI_MSGSIZE(N)])
-
-
-/* Read / Write of SPI mode (SPI_MODE_0..SPI_MODE_3) */
-#define SPI_IOC_RD_MODE _IOR(SPI_IOC_MAGIC, 1, __u8)
-#define SPI_IOC_WR_MODE _IOW(SPI_IOC_MAGIC, 1, __u8)
-
-/* Read / Write SPI bit justification */
-#define SPI_IOC_RD_LSB_FIRST _IOR(SPI_IOC_MAGIC, 2, __u8)
-#define SPI_IOC_WR_LSB_FIRST _IOW(SPI_IOC_MAGIC, 2, __u8)
-
-/* Read / Write SPI device word length (1..N) */
-#define SPI_IOC_RD_BITS_PER_WORD _IOR(SPI_IOC_MAGIC, 3, __u8)
-#define SPI_IOC_WR_BITS_PER_WORD _IOW(SPI_IOC_MAGIC, 3, __u8)
-
-/* Read / Write SPI device default max speed hz */
-#define SPI_IOC_RD_MAX_SPEED_HZ _IOR(SPI_IOC_MAGIC, 4, __u32)
-#define SPI_IOC_WR_MAX_SPEED_HZ _IOW(SPI_IOC_MAGIC, 4, __u32)
-
-
-
-#endif /* SPIDEV_H */
--- /dev/null
+/*
+ * include/linux/spi/spidev.h
+ *
+ * Copyright (C) 2006 SWAPP
+ * Andrea Paterniani <a.paterniani@swapp-eng.it>
+ *
+ * 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 SPIDEV_H
+#define SPIDEV_H
+
+#include <linux/types.h>
+
+/* User space versions of kernel symbols for SPI clocking modes,
+ * matching <linux/spi/spi.h>
+ */
+
+#define SPI_CPHA 0x01
+#define SPI_CPOL 0x02
+
+#define SPI_MODE_0 (0|0)
+#define SPI_MODE_1 (0|SPI_CPHA)
+#define SPI_MODE_2 (SPI_CPOL|0)
+#define SPI_MODE_3 (SPI_CPOL|SPI_CPHA)
+
+#define SPI_CS_HIGH 0x04
+#define SPI_LSB_FIRST 0x08
+#define SPI_3WIRE 0x10
+#define SPI_LOOP 0x20
+#define SPI_NO_CS 0x40
+#define SPI_READY 0x80
+
+/*---------------------------------------------------------------------------*/
+
+/* IOCTL commands */
+
+#define SPI_IOC_MAGIC 'k'
+
+/**
+ * struct spi_ioc_transfer - describes a single SPI transfer
+ * @tx_buf: Holds pointer to userspace buffer with transmit data, or null.
+ * If no data is provided, zeroes are shifted out.
+ * @rx_buf: Holds pointer to userspace buffer for receive data, or null.
+ * @len: Length of tx and rx buffers, in bytes.
+ * @speed_hz: Temporary override of the device's bitrate.
+ * @bits_per_word: Temporary override of the device's wordsize.
+ * @delay_usecs: If nonzero, how long to delay after the last bit transfer
+ * before optionally deselecting the device before the next transfer.
+ * @cs_change: True to deselect device before starting the next transfer.
+ *
+ * This structure is mapped directly to the kernel spi_transfer structure;
+ * the fields have the same meanings, except of course that the pointers
+ * are in a different address space (and may be of different sizes in some
+ * cases, such as 32-bit i386 userspace over a 64-bit x86_64 kernel).
+ * Zero-initialize the structure, including currently unused fields, to
+ * accommodate potential future updates.
+ *
+ * SPI_IOC_MESSAGE gives userspace the equivalent of kernel spi_sync().
+ * Pass it an array of related transfers, they'll execute together.
+ * Each transfer may be half duplex (either direction) or full duplex.
+ *
+ * struct spi_ioc_transfer mesg[4];
+ * ...
+ * status = ioctl(fd, SPI_IOC_MESSAGE(4), mesg);
+ *
+ * So for example one transfer might send a nine bit command (right aligned
+ * in a 16-bit word), the next could read a block of 8-bit data before
+ * terminating that command by temporarily deselecting the chip; the next
+ * could send a different nine bit command (re-selecting the chip), and the
+ * last transfer might write some register values.
+ */
+struct spi_ioc_transfer {
+ __u64 tx_buf;
+ __u64 rx_buf;
+
+ __u32 len;
+ __u32 speed_hz;
+
+ __u16 delay_usecs;
+ __u8 bits_per_word;
+ __u8 cs_change;
+ __u32 pad;
+
+ /* If the contents of 'struct spi_ioc_transfer' ever change
+ * incompatibly, then the ioctl number (currently 0) must change;
+ * ioctls with constant size fields get a bit more in the way of
+ * error checking than ones (like this) where that field varies.
+ *
+ * NOTE: struct layout is the same in 64bit and 32bit userspace.
+ */
+};
+
+/* not all platforms use <asm-generic/ioctl.h> or _IOC_TYPECHECK() ... */
+#define SPI_MSGSIZE(N) \
+ ((((N)*(sizeof (struct spi_ioc_transfer))) < (1 << _IOC_SIZEBITS)) \
+ ? ((N)*(sizeof (struct spi_ioc_transfer))) : 0)
+#define SPI_IOC_MESSAGE(N) _IOW(SPI_IOC_MAGIC, 0, char[SPI_MSGSIZE(N)])
+
+
+/* Read / Write of SPI mode (SPI_MODE_0..SPI_MODE_3) */
+#define SPI_IOC_RD_MODE _IOR(SPI_IOC_MAGIC, 1, __u8)
+#define SPI_IOC_WR_MODE _IOW(SPI_IOC_MAGIC, 1, __u8)
+
+/* Read / Write SPI bit justification */
+#define SPI_IOC_RD_LSB_FIRST _IOR(SPI_IOC_MAGIC, 2, __u8)
+#define SPI_IOC_WR_LSB_FIRST _IOW(SPI_IOC_MAGIC, 2, __u8)
+
+/* Read / Write SPI device word length (1..N) */
+#define SPI_IOC_RD_BITS_PER_WORD _IOR(SPI_IOC_MAGIC, 3, __u8)
+#define SPI_IOC_WR_BITS_PER_WORD _IOW(SPI_IOC_MAGIC, 3, __u8)
+
+/* Read / Write SPI device default max speed hz */
+#define SPI_IOC_RD_MAX_SPEED_HZ _IOR(SPI_IOC_MAGIC, 4, __u32)
+#define SPI_IOC_WR_MAX_SPEED_HZ _IOW(SPI_IOC_MAGIC, 4, __u32)
+
+
+
+#endif /* SPIDEV_H */
projects / firefly-linux-kernel-4.4.55.git / commitdiff