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author | Christoph Müllner <christoph.muellner@vrull.eu> | 2023-11-27 00:22:11 +0100 |
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committer | Christoph Müllner <christophm30@gmail.com> | 2023-11-27 12:08:13 +0100 |
commit | b905f4be23124470520e30005b9d29a9f4219e5a (patch) | |
tree | 626f2856204cd277940f51f1b7706a957a0d0573 /linux-headers/include/linux/spi/spi.h | |
parent | c2b4923917aa334f83606d08e0eaf3dddc2c9589 (diff) | |
download | riscv-gnu-toolchain-b905f4be23124470520e30005b9d29a9f4219e5a.zip riscv-gnu-toolchain-b905f4be23124470520e30005b9d29a9f4219e5a.tar.gz riscv-gnu-toolchain-b905f4be23124470520e30005b9d29a9f4219e5a.tar.bz2 |
Update Linux headers from v5.10.5 to v6.6
This patch imports the Linux kernel from v5.10.5 to v6.6.
Important RISC-V specific changes are:
* hwprobe support
* V support (ptrace and prctl calls)
* KVM support
There are patches on the glibc list that introduce code which uses the
hwprobe interface. Let's update the kernel headers to be ready for these
changes.
Signed-off-by: Christoph Müllner <christoph.muellner@vrull.eu>
Diffstat (limited to 'linux-headers/include/linux/spi/spi.h')
-rw-r--r-- | linux-headers/include/linux/spi/spi.h | 43 |
1 files changed, 43 insertions, 0 deletions
diff --git a/linux-headers/include/linux/spi/spi.h b/linux-headers/include/linux/spi/spi.h new file mode 100644 index 0000000..0381bd3 --- /dev/null +++ b/linux-headers/include/linux/spi/spi.h @@ -0,0 +1,43 @@ +/* SPDX-License-Identifier: GPL-2.0+ WITH Linux-syscall-note */ +#ifndef _SPI_H +#define _SPI_H + +#include <linux/const.h> + +#define SPI_CPHA _BITUL(0) /* clock phase */ +#define SPI_CPOL _BITUL(1) /* clock polarity */ + +#define SPI_MODE_0 (0|0) /* (original MicroWire) */ +#define SPI_MODE_1 (0|SPI_CPHA) +#define SPI_MODE_2 (SPI_CPOL|0) +#define SPI_MODE_3 (SPI_CPOL|SPI_CPHA) +#define SPI_MODE_X_MASK (SPI_CPOL|SPI_CPHA) + +#define SPI_CS_HIGH _BITUL(2) /* chipselect active high? */ +#define SPI_LSB_FIRST _BITUL(3) /* per-word bits-on-wire */ +#define SPI_3WIRE _BITUL(4) /* SI/SO signals shared */ +#define SPI_LOOP _BITUL(5) /* loopback mode */ +#define SPI_NO_CS _BITUL(6) /* 1 dev/bus, no chipselect */ +#define SPI_READY _BITUL(7) /* slave pulls low to pause */ +#define SPI_TX_DUAL _BITUL(8) /* transmit with 2 wires */ +#define SPI_TX_QUAD _BITUL(9) /* transmit with 4 wires */ +#define SPI_RX_DUAL _BITUL(10) /* receive with 2 wires */ +#define SPI_RX_QUAD _BITUL(11) /* receive with 4 wires */ +#define SPI_CS_WORD _BITUL(12) /* toggle cs after each word */ +#define SPI_TX_OCTAL _BITUL(13) /* transmit with 8 wires */ +#define SPI_RX_OCTAL _BITUL(14) /* receive with 8 wires */ +#define SPI_3WIRE_HIZ _BITUL(15) /* high impedance turnaround */ +#define SPI_RX_CPHA_FLIP _BITUL(16) /* flip CPHA on Rx only xfer */ +#define SPI_MOSI_IDLE_LOW _BITUL(17) /* leave mosi line low when idle */ + +/* + * All the bits defined above should be covered by SPI_MODE_USER_MASK. + * The SPI_MODE_USER_MASK has the SPI_MODE_KERNEL_MASK counterpart in + * 'include/linux/spi/spi.h'. The bits defined here are from bit 0 upwards + * while in SPI_MODE_KERNEL_MASK they are from the other end downwards. + * These bits must not overlap. A static assert check should make sure of that. + * If adding extra bits, make sure to increase the bit index below as well. + */ +#define SPI_MODE_USER_MASK (_BITUL(18) - 1) + +#endif /* _SPI_H */ |