Re: [PATCH 1/2] MIPS: OCTEON: Add register definitions for SPI host hardware.
From: Grant Likely <hidden>
Date: 2012-05-20 05:23:27
Also in:
linux-devicetree, linux-spi, lkml
On Fri, 11 May 2012 14:34:45 -0700, David Daney [off-list ref] wrote:
quoted hunk ↗ jump to hunk
From: David Daney <redacted> Needed by SPI driver. Signed-off-by: David Daney <redacted> --- arch/mips/include/asm/octeon/cvmx-mpi-defs.h | 328 ++++++++++++++++++++++++++ 1 files changed, 328 insertions(+), 0 deletions(-) create mode 100644 arch/mips/include/asm/octeon/cvmx-mpi-defs.hdiff --git a/arch/mips/include/asm/octeon/cvmx-mpi-defs.h b/arch/mips/include/asm/octeon/cvmx-mpi-defs.h new file mode 100644 index 0000000..4615b10 --- /dev/null +++ b/arch/mips/include/asm/octeon/cvmx-mpi-defs.h@@ -0,0 +1,328 @@ +/***********************license start*************** + * Author: Cavium Networks + * + * Contact: support@caviumnetworks.com + * This file is part of the OCTEON SDK + * + * Copyright (c) 2003-2012 Cavium Networks + * + * This file is free software; you can redistribute it and/or modify + * it under the terms of the GNU General Public License, Version 2, as + * published by the Free Software Foundation. + * + * This file is distributed in the hope that it will be useful, but + * AS-IS and WITHOUT ANY WARRANTY; without even the implied warranty + * of MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE, TITLE, or + * NONINFRINGEMENT. See the GNU General Public License for more + * details. + * + * You should have received a copy of the GNU General Public License + * along with this file; if not, write to the Free Software + * Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA + * or visit http://www.gnu.org/licenses/. + * + * This file may also be available under a different license from Cavium. + * Contact Cavium Networks for more information + ***********************license end**************************************/ + +#ifndef __CVMX_MPI_DEFS_H__ +#define __CVMX_MPI_DEFS_H__ + +#define CVMX_MPI_CFG (CVMX_ADD_IO_SEG(0x0001070000001000ull)) +#define CVMX_MPI_DATX(offset) (CVMX_ADD_IO_SEG(0x0001070000001080ull) + ((offset) & 15) * 8) +#define CVMX_MPI_STS (CVMX_ADD_IO_SEG(0x0001070000001008ull)) +#define CVMX_MPI_TX (CVMX_ADD_IO_SEG(0x0001070000001010ull)) + +union cvmx_mpi_cfg { + uint64_t u64; + struct cvmx_mpi_cfg_s { +#ifdef __BIG_ENDIAN_BITFIELD + uint64_t reserved_29_63:35; + uint64_t clkdiv:13; + uint64_t csena3:1; + uint64_t csena2:1; + uint64_t csena1:1; + uint64_t csena0:1; + uint64_t cslate:1; + uint64_t tritx:1; + uint64_t idleclks:2; + uint64_t cshi:1; + uint64_t csena:1; + uint64_t int_ena:1; + uint64_t lsbfirst:1; + uint64_t wireor:1; + uint64_t clk_cont:1; + uint64_t idlelo:1; + uint64_t enable:1; +#else + uint64_t enable:1; + uint64_t idlelo:1; + uint64_t clk_cont:1; + uint64_t wireor:1; + uint64_t lsbfirst:1; + uint64_t int_ena:1; + uint64_t csena:1; + uint64_t cshi:1; + uint64_t idleclks:2; + uint64_t tritx:1; + uint64_t cslate:1; + uint64_t csena0:1; + uint64_t csena1:1; + uint64_t csena2:1; + uint64_t csena3:1; + uint64_t clkdiv:13; + uint64_t reserved_29_63:35; +#endif + } s;
:-/ I'm not a fan of bitfields for register access. I'd much rather have macros the various bit positions; but given that this live under arch/mips I can't really say much and you can add my acked-by if you need to.